[PATCH v7 00/14] add imx usb driver based on Greg next tree

[PATCH v7 00/14] add imx usb driver based on Greg next tree

[Richard Zhao]

The work is based on  ci13xxx rework done by Alexander Shishkin.

To let Greg pick up, I also added patches Alex queued that I depends on.
Patch #1 - #9 : It can also be found at
http://github.com/virtuoso/linux-ci.git ci

This patch series can also be found at:
https://github.com/riczhao/kernel-imx/commits/topics/usb-driver

Status:
  - this version only support host
  - usbotg controler works at host role

Changes since last version:
 - use platform_device_unregister in ci13xxx_remove_device
 - fix build error of udc driver

Alexander Shishkin (1):
  usb: chipidea: remove unneeded NULL check

Felipe Balbi (3):
  usb: chipidea: drop useless arch-check
  usb: chipidea: msm: add missing section annotation
  usb: chipidea: msm: add remove method

Richard Zhao (10):
  USB: Chipidea: rename struct ci13xxx_udc_driver to struct
    ci13xxx_platform_data
  USB: Chipidea: rename struct ci13xxx variables from udc to ci
  USB: Chipidea: add unified ci13xxx_{add,remove}_device for platform
    drivers
  USB: Chipidea: add ci13xxx device id management
  usb: chipidea: select USB_EHCI_ROOT_HUB_TT in USB_CHIPIDEA_HOST of
    Kconfig
  usb: otg: add notify_connect/notify_disconnect callback
  USB: notify phy when root hub port connect change
  usb: chipidea: permit driver bindings pass phy pointer
  usb: otg: add basic mxs phy driver support
  usb: chipidea: add imx platform driver

 .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 +
 Documentation/devicetree/bindings/usb/mxs-phy.txt  |   13 +
 drivers/usb/chipidea/Kconfig                       |    1 +
 drivers/usb/chipidea/Makefile                      |    9 +-
 drivers/usb/chipidea/ci.h                          |   32 +-
 drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++
 drivers/usb/chipidea/ci13xxx_msm.c                 |   62 +-
 drivers/usb/chipidea/ci13xxx_pci.c                 |   52 +-
 drivers/usb/chipidea/core.c                        |   70 ++-
 drivers/usb/chipidea/debug.c                       |  146 ++---
 drivers/usb/chipidea/host.c                        |    3 +-
 drivers/usb/chipidea/udc.c                         |  636 ++++++++++----------
 drivers/usb/core/hub.c                             |    8 +
 drivers/usb/otg/Kconfig                            |    9 +
 drivers/usb/otg/Makefile                           |    1 +
 drivers/usb/otg/mxs-phy.c                          |  197 ++++++
 include/linux/usb/chipidea.h                       |   14 +-
 include/linux/usb/otg.h                            |   21 +
 18 files changed, 1000 insertions(+), 491 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
 create mode 100644 Documentation/devicetree/bindings/usb/mxs-phy.txt
 create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
 create mode 100644 drivers/usb/otg/mxs-phy.c

-- 
1.7.9.5


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[PATCH v7 00/14] add imx usb driver based on Greg next tree

[Richard Zhao]

The work is based on  ci13xxx rework done by Alexander Shishkin.

To let Greg pick up, I also added patches Alex queued that I depends on.
Patch #1 - #9 : It can also be found at
http://github.com/virtuoso/linux-ci.git ci

This patch series can also be found at:
https://github.com/riczhao/kernel-imx/commits/topics/usb-driver

Status:
  - this version only support host
  - usbotg controler works at host role

Changes since last version:
 - use platform_device_unregister in ci13xxx_remove_device
 - fix build error of udc driver

Alexander Shishkin (1):
  usb: chipidea: remove unneeded NULL check

Felipe Balbi (3):
  usb: chipidea: drop useless arch-check
  usb: chipidea: msm: add missing section annotation
  usb: chipidea: msm: add remove method

Richard Zhao (10):
  USB: Chipidea: rename struct ci13xxx_udc_driver to struct
    ci13xxx_platform_data
  USB: Chipidea: rename struct ci13xxx variables from udc to ci
  USB: Chipidea: add unified ci13xxx_{add,remove}_device for platform
    drivers
  USB: Chipidea: add ci13xxx device id management
  usb: chipidea: select USB_EHCI_ROOT_HUB_TT in USB_CHIPIDEA_HOST of
    Kconfig
  usb: otg: add notify_connect/notify_disconnect callback
  USB: notify phy when root hub port connect change
  usb: chipidea: permit driver bindings pass phy pointer
  usb: otg: add basic mxs phy driver support
  usb: chipidea: add imx platform driver

 .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 +
 Documentation/devicetree/bindings/usb/mxs-phy.txt  |   13 +
 drivers/usb/chipidea/Kconfig                       |    1 +
 drivers/usb/chipidea/Makefile                      |    9 +-
 drivers/usb/chipidea/ci.h                          |   32 +-
 drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++
 drivers/usb/chipidea/ci13xxx_msm.c                 |   62 +-
 drivers/usb/chipidea/ci13xxx_pci.c                 |   52 +-
 drivers/usb/chipidea/core.c                        |   70 ++-
 drivers/usb/chipidea/debug.c                       |  146 ++---
 drivers/usb/chipidea/host.c                        |    3 +-
 drivers/usb/chipidea/udc.c                         |  636 ++++++++++----------
 drivers/usb/core/hub.c                             |    8 +
 drivers/usb/otg/Kconfig                            |    9 +
 drivers/usb/otg/Makefile                           |    1 +
 drivers/usb/otg/mxs-phy.c                          |  197 ++++++
 include/linux/usb/chipidea.h                       |   14 +-
 include/linux/usb/otg.h                            |   21 +
 18 files changed, 1000 insertions(+), 491 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
 create mode 100644 Documentation/devicetree/bindings/usb/mxs-phy.txt
 create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
 create mode 100644 drivers/usb/otg/mxs-phy.c

-- 
1.7.9.5

[PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Richard Zhao]

From: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

As reported by Dan Carpenter, there is a NULL check in udc_start() that
follows a dereference of the pointer that's being checked. However, at
that point udc pointer shouldn't ever be NULL and if it is, the dereference
should cause an oops.

Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Reported-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
---
 drivers/usb/chipidea/udc.c |    3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 51f9694..cdb9212 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1647,9 +1647,6 @@ static int udc_start(struct ci13xxx *udc)
 	struct device *dev = udc->dev;
 	int retval = 0;
 
-	if (!udc)
-		return -EINVAL;

[PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Richard Zhao]

From: Alexander Shishkin <alexander.shishkin@linux.intel.com>

As reported by Dan Carpenter, there is a NULL check in udc_start() that
follows a dereference of the pointer that's being checked. However, at
that point udc pointer shouldn't ever be NULL and if it is, the dereference
should cause an oops.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Felipe Balbi <balbi@ti.com>
---
 drivers/usb/chipidea/udc.c |    3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 51f9694..cdb9212 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1647,9 +1647,6 @@ static int udc_start(struct ci13xxx *udc)
 	struct device *dev = udc->dev;
 	int retval = 0;
 
-	if (!udc)
-		return -EINVAL;
-
 	spin_lock_init(&udc->lock);
 
 	udc->gadget.ops          = &usb_gadget_ops;
-- 
1.7.9.5

[PATCH v7 02/14] usb: chipidea: drop useless arch-check

[Richard Zhao]

From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>

msm glue layer compiles on all arches just
fine. Let's drop the unnecessary ARCH check
so we have easier compile tests.

Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/Makefile |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index cc34937..b69900a 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -5,10 +5,12 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC)	+= udc.o
 ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST)	+= host.o
 ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG)	+= debug.o
 
+# Glue/Bridge layers go here
+
+obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
+
+# PCI doesn't provide stubs, need to check
 ifneq ($(CONFIG_PCI),)
 	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_pci.o
 endif
 
-ifneq ($(CONFIG_ARCH_MSM),)
-	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
-endif
-- 
1.7.9.5


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[PATCH v7 02/14] usb: chipidea: drop useless arch-check

[Richard Zhao]

From: Felipe Balbi <balbi@ti.com>

msm glue layer compiles on all arches just
fine. Let's drop the unnecessary ARCH check
so we have easier compile tests.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/Makefile |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index cc34937..b69900a 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -5,10 +5,12 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC)	+= udc.o
 ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST)	+= host.o
 ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG)	+= debug.o
 
+# Glue/Bridge layers go here
+
+obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
+
+# PCI doesn't provide stubs, need to check
 ifneq ($(CONFIG_PCI),)
 	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_pci.o
 endif
 
-ifneq ($(CONFIG_ARCH_MSM),)
-	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
-endif
-- 
1.7.9.5

[PATCH v7 03/14] usb: chipidea: msm: add missing section annotation

[Richard Zhao]

From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>

no functional changes, it will just free up some
code if we don't have hotplug.

Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/ci13xxx_msm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 958069e..8d438b8 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -55,7 +55,7 @@ static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
 	.notify_event		= ci13xxx_msm_notify_event,
 };
 
-static int ci13xxx_msm_probe(struct platform_device *pdev)
+static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 {
 	struct platform_device *plat_ci;
 	int ret;
-- 
1.7.9.5


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[PATCH v7 03/14] usb: chipidea: msm: add missing section annotation

[Richard Zhao]

From: Felipe Balbi <balbi@ti.com>

no functional changes, it will just free up some
code if we don't have hotplug.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/ci13xxx_msm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 958069e..8d438b8 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -55,7 +55,7 @@ static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
 	.notify_event		= ci13xxx_msm_notify_event,
 };
 
-static int ci13xxx_msm_probe(struct platform_device *pdev)
+static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 {
 	struct platform_device *plat_ci;
 	int ret;
-- 
1.7.9.5

[PATCH v7 04/14] usb: chipidea: msm: add remove method

[Richard Zhao]

From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>

allow this driver to be removed too.

Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 8d438b8..68512d4 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 	if (ret)
 		goto put_platform;
 
+	platform_set_drvdata(pdev, plat_ci);
+
 	pm_runtime_no_callbacks(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
@@ -95,16 +97,22 @@ put_platform:
 	return ret;
 }
 
+static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
+{
+	struct platform_device *plat_ci = platform_get_drvdata(pdev);
+
+	platform_device_unregister(plat_ci);
+
+	return 0;
+}
+
 static struct platform_driver ci13xxx_msm_driver = {
 	.probe = ci13xxx_msm_probe,
+	.remove = __devexit_p(ci13xxx_msm_remove),
 	.driver = { .name = "msm_hsusb", },
 };
-MODULE_ALIAS("platform:msm_hsusb");
 
-static int __init ci13xxx_msm_init(void)
-{
-	return platform_driver_register(&ci13xxx_msm_driver);
-}
-module_init(ci13xxx_msm_init);
+module_platform_driver(ci13xxx_msm_driver);
 
+MODULE_ALIAS("platform:msm_hsusb");
 MODULE_LICENSE("GPL v2");
-- 
1.7.9.5


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[PATCH v7 04/14] usb: chipidea: msm: add remove method

[Richard Zhao]

From: Felipe Balbi <balbi@ti.com>

allow this driver to be removed too.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 8d438b8..68512d4 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 	if (ret)
 		goto put_platform;
 
+	platform_set_drvdata(pdev, plat_ci);
+
 	pm_runtime_no_callbacks(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
@@ -95,16 +97,22 @@ put_platform:
 	return ret;
 }
 
+static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
+{
+	struct platform_device *plat_ci = platform_get_drvdata(pdev);
+
+	platform_device_unregister(plat_ci);
+
+	return 0;
+}
+
 static struct platform_driver ci13xxx_msm_driver = {
 	.probe = ci13xxx_msm_probe,
+	.remove = __devexit_p(ci13xxx_msm_remove),
 	.driver = { .name = "msm_hsusb", },
 };
-MODULE_ALIAS("platform:msm_hsusb");
 
-static int __init ci13xxx_msm_init(void)
-{
-	return platform_driver_register(&ci13xxx_msm_driver);
-}
-module_init(ci13xxx_msm_init);
+module_platform_driver(ci13xxx_msm_driver);
 
+MODULE_ALIAS("platform:msm_hsusb");
 MODULE_LICENSE("GPL v2");
-- 
1.7.9.5

[PATCH v7 05/14] USB: Chipidea: rename struct ci13xxx_udc_driver to struct ci13xxx_platform_data

[Richard Zhao]

This patch rename struct ci13xxx_udc_driver and var with the type.

ci13xxx_platform_data reflect it's passed from platfrom driver.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/ci.h          |    4 ++--
 drivers/usb/chipidea/ci13xxx_msm.c |    6 +++---
 drivers/usb/chipidea/ci13xxx_pci.c |   20 ++++++++++----------
 drivers/usb/chipidea/core.c        |   12 ++++++------
 drivers/usb/chipidea/host.c        |    2 +-
 drivers/usb/chipidea/udc.c         |   24 ++++++++++++------------
 include/linux/usb/chipidea.h       |    2 +-
 7 files changed, 35 insertions(+), 35 deletions(-)

diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 50911f8..0b09330 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -125,7 +125,7 @@ struct hw_bank {
  * @remote_wakeup: host-enabled remote wakeup
  * @suspended: suspended by host
  * @test_mode: the selected test mode
- * @udc_driver: platform specific information supplied by parent device
+ * @platdata: platform specific information supplied by parent device
  * @vbus_active: is VBUS active
  * @transceiver: pointer to USB PHY, if any
  * @hcd: pointer to usb_hcd for ehci host driver
@@ -158,7 +158,7 @@ struct ci13xxx {
 	u8				suspended;
 	u8				test_mode;
 
-	struct ci13xxx_udc_driver	*udc_driver;
+	struct ci13xxx_platform_data	*platdata;
 	int				vbus_active;
 	struct usb_phy			*transceiver;
 	struct usb_hcd			*hcd;
diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 68512d4..21a7c2e 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -45,7 +45,7 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
 	}
 }
 
-static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
+static struct ci13xxx_platform_data ci13xxx_msm_platdata = {
 	.name			= "ci13xxx_msm",
 	.flags			= CI13XXX_REGS_SHARED |
 				  CI13XXX_REQUIRE_TRANSCEIVER |
@@ -75,8 +75,8 @@ static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 		goto put_platform;
 	}
 
-	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
-				       sizeof(ci13xxx_msm_udc_driver));
+	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_platdata,
+				       sizeof(ci13xxx_msm_platdata));
 	if (ret)
 		goto put_platform;
 
diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c
index e3dab27..cdcac3a 100644
--- a/drivers/usb/chipidea/ci13xxx_pci.c
+++ b/drivers/usb/chipidea/ci13xxx_pci.c
@@ -23,17 +23,17 @@
 /******************************************************************************
  * PCI block
  *****************************************************************************/
-struct ci13xxx_udc_driver pci_driver = {
+struct ci13xxx_platform_data pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= DEF_CAPOFFSET,
 };
 
-struct ci13xxx_udc_driver langwell_pci_driver = {
+struct ci13xxx_platform_data langwell_pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= 0,
 };
 
-struct ci13xxx_udc_driver penwell_pci_driver = {
+struct ci13xxx_platform_data penwell_pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= 0,
 	.power_budget	= 200,
@@ -51,12 +51,12 @@ struct ci13xxx_udc_driver penwell_pci_driver = {
 static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 				       const struct pci_device_id *id)
 {
-	struct ci13xxx_udc_driver *driver = (void *)id->driver_data;
+	struct ci13xxx_platform_data *platdata = (void *)id->driver_data;
 	struct platform_device *plat_ci;
 	struct resource res[3];
 	int retval = 0, nres = 2;
 
-	if (!driver) {
+	if (!platdata) {
 		dev_err(&pdev->dev, "device doesn't provide driver data\n");
 		return -ENODEV;
 	}
@@ -95,7 +95,7 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 		goto put_platform;
 	}
 
-	retval = platform_device_add_data(plat_ci, driver, sizeof(*driver));
+	retval = platform_device_add_data(plat_ci, platdata, sizeof(*platdata));
 	if (retval)
 		goto put_platform;
 
@@ -147,19 +147,19 @@ static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev)
 static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
 	{
 		PCI_DEVICE(0x153F, 0x1004),
-		.driver_data = (kernel_ulong_t)&pci_driver,
+		.driver_data = (kernel_ulong_t)&pci_platdata,
 	},
 	{
 		PCI_DEVICE(0x153F, 0x1006),
-		.driver_data = (kernel_ulong_t)&pci_driver,
+		.driver_data = (kernel_ulong_t)&pci_platdata,
 	},
 	{
 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
-		.driver_data = (kernel_ulong_t)&langwell_pci_driver,
+		.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
 	},
 	{
 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
-		.driver_data = (kernel_ulong_t)&penwell_pci_driver,
+		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
 	},
 	{ 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
 };
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 15e03b3..9a883bd 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -179,7 +179,7 @@ static int hw_device_init(struct ci13xxx *ci, void __iomem *base)
 	ci->hw_bank.abs = base;
 
 	ci->hw_bank.cap = ci->hw_bank.abs;
-	ci->hw_bank.cap += ci->udc_driver->capoffset;
+	ci->hw_bank.cap += ci->platdata->capoffset;
 	ci->hw_bank.op = ci->hw_bank.cap + ioread8(ci->hw_bank.cap);
 
 	hw_alloc_regmap(ci, false);
@@ -227,11 +227,11 @@ int hw_device_reset(struct ci13xxx *ci, u32 mode)
 		udelay(10);		/* not RTOS friendly */
 
 
-	if (ci->udc_driver->notify_event)
-		ci->udc_driver->notify_event(ci,
+	if (ci->platdata->notify_event)
+		ci->platdata->notify_event(ci,
 			CI13XXX_CONTROLLER_RESET_EVENT);
 
-	if (ci->udc_driver->flags & CI13XXX_DISABLE_STREAMING)
+	if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING)
 		hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS);
 
 	/* USBMODE should be configured step by step */
@@ -364,7 +364,7 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 	}
 
 	ci->dev = dev;
-	ci->udc_driver = dev->platform_data;
+	ci->platdata = dev->platform_data;
 
 	ret = hw_device_init(ci, base);
 	if (ret < 0) {
@@ -419,7 +419,7 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 	}
 
 	platform_set_drvdata(pdev, ci);
-	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->udc_driver->name,
+	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name,
 			  ci);
 	if (ret)
 		goto stop;
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 9eacd21..4a4fdb8 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -116,7 +116,7 @@ static int host_start(struct ci13xxx *ci)
 	hcd->regs = ci->hw_bank.abs;
 	hcd->has_tt = 1;
 
-	hcd->power_budget = ci->udc_driver->power_budget;
+	hcd->power_budget = ci->platdata->power_budget;
 
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = ci->hw_bank.cap;
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index cdb9212..68584bb 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1362,7 +1362,7 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 	unsigned long flags;
 	int gadget_ready = 0;
 
-	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS))
+	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
 		return -EOPNOTSUPP;
 
 	spin_lock_irqsave(&udc->lock, flags);
@@ -1378,8 +1378,8 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 			hw_device_state(udc, udc->ep0out->qh.dma);
 		} else {
 			hw_device_state(udc, 0);
-			if (udc->udc_driver->notify_event)
-				udc->udc_driver->notify_event(udc,
+			if (udc->platdata->notify_event)
+				udc->platdata->notify_event(udc,
 				CI13XXX_CONTROLLER_STOPPED_EVENT);
 			_gadget_stop_activity(&udc->gadget);
 			pm_runtime_put_sync(&_gadget->dev);
@@ -1514,9 +1514,9 @@ static int ci13xxx_start(struct usb_gadget *gadget,
 
 	udc->driver = driver;
 	pm_runtime_get_sync(&udc->gadget.dev);
-	if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) {
+	if (udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
 		if (udc->vbus_active) {
-			if (udc->udc_driver->flags & CI13XXX_REGS_SHARED)
+			if (udc->platdata->flags & CI13XXX_REGS_SHARED)
 				hw_device_reset(udc, USBMODE_CM_DC);
 		} else {
 			pm_runtime_put_sync(&udc->gadget.dev);
@@ -1544,11 +1544,11 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
 
 	spin_lock_irqsave(&udc->lock, flags);
 
-	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) ||
+	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
 			udc->vbus_active) {
 		hw_device_state(udc, 0);
-		if (udc->udc_driver->notify_event)
-			udc->udc_driver->notify_event(udc,
+		if (udc->platdata->notify_event)
+			udc->platdata->notify_event(udc,
 			CI13XXX_CONTROLLER_STOPPED_EVENT);
 		udc->driver = NULL;
 		spin_unlock_irqrestore(&udc->lock, flags);
@@ -1581,7 +1581,7 @@ static irqreturn_t udc_irq(struct ci13xxx *udc)
 
 	spin_lock(&udc->lock);
 
-	if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
+	if (udc->platdata->flags & CI13XXX_REGS_SHARED) {
 		if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
 				USBMODE_CM_DC) {
 			spin_unlock(&udc->lock);
@@ -1653,7 +1653,7 @@ static int udc_start(struct ci13xxx *udc)
 	udc->gadget.speed        = USB_SPEED_UNKNOWN;
 	udc->gadget.max_speed    = USB_SPEED_HIGH;
 	udc->gadget.is_otg       = 0;
-	udc->gadget.name         = udc->udc_driver->name;
+	udc->gadget.name         = udc->platdata->name;
 
 	INIT_LIST_HEAD(&udc->gadget.ep_list);
 
@@ -1686,14 +1686,14 @@ static int udc_start(struct ci13xxx *udc)
 
 	udc->transceiver = usb_get_transceiver();
 
-	if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
+	if (udc->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
 		if (udc->transceiver == NULL) {
 			retval = -ENODEV;
 			goto free_pools;
 		}
 	}
 
-	if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) {
+	if (!(udc->platdata->flags & CI13XXX_REGS_SHARED)) {
 		retval = hw_device_reset(udc, USBMODE_CM_DC);
 		if (retval)
 			goto put_transceiver;
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index edb90d6..d4cf9706 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -6,7 +6,7 @@
 #define __LINUX_USB_CHIPIDEA_H
 
 struct ci13xxx;
-struct ci13xxx_udc_driver {
+struct ci13xxx_platform_data {
 	const char	*name;
 	/* offset of the capability registers */
 	uintptr_t	 capoffset;
-- 
1.7.9.5


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[PATCH v7 05/14] USB: Chipidea: rename struct ci13xxx_udc_driver to struct ci13xxx_platform_data

[Richard Zhao]

This patch rename struct ci13xxx_udc_driver and var with the type.

ci13xxx_platform_data reflect it's passed from platfrom driver.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/ci.h          |    4 ++--
 drivers/usb/chipidea/ci13xxx_msm.c |    6 +++---
 drivers/usb/chipidea/ci13xxx_pci.c |   20 ++++++++++----------
 drivers/usb/chipidea/core.c        |   12 ++++++------
 drivers/usb/chipidea/host.c        |    2 +-
 drivers/usb/chipidea/udc.c         |   24 ++++++++++++------------
 include/linux/usb/chipidea.h       |    2 +-
 7 files changed, 35 insertions(+), 35 deletions(-)

diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 50911f8..0b09330 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -125,7 +125,7 @@ struct hw_bank {
  * @remote_wakeup: host-enabled remote wakeup
  * @suspended: suspended by host
  * @test_mode: the selected test mode
- * @udc_driver: platform specific information supplied by parent device
+ * @platdata: platform specific information supplied by parent device
  * @vbus_active: is VBUS active
  * @transceiver: pointer to USB PHY, if any
  * @hcd: pointer to usb_hcd for ehci host driver
@@ -158,7 +158,7 @@ struct ci13xxx {
 	u8				suspended;
 	u8				test_mode;
 
-	struct ci13xxx_udc_driver	*udc_driver;
+	struct ci13xxx_platform_data	*platdata;
 	int				vbus_active;
 	struct usb_phy			*transceiver;
 	struct usb_hcd			*hcd;
diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 68512d4..21a7c2e 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -45,7 +45,7 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
 	}
 }
 
-static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
+static struct ci13xxx_platform_data ci13xxx_msm_platdata = {
 	.name			= "ci13xxx_msm",
 	.flags			= CI13XXX_REGS_SHARED |
 				  CI13XXX_REQUIRE_TRANSCEIVER |
@@ -75,8 +75,8 @@ static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 		goto put_platform;
 	}
 
-	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
-				       sizeof(ci13xxx_msm_udc_driver));
+	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_platdata,
+				       sizeof(ci13xxx_msm_platdata));
 	if (ret)
 		goto put_platform;
 
diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c
index e3dab27..cdcac3a 100644
--- a/drivers/usb/chipidea/ci13xxx_pci.c
+++ b/drivers/usb/chipidea/ci13xxx_pci.c
@@ -23,17 +23,17 @@
 /******************************************************************************
  * PCI block
  *****************************************************************************/
-struct ci13xxx_udc_driver pci_driver = {
+struct ci13xxx_platform_data pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= DEF_CAPOFFSET,
 };
 
-struct ci13xxx_udc_driver langwell_pci_driver = {
+struct ci13xxx_platform_data langwell_pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= 0,
 };
 
-struct ci13xxx_udc_driver penwell_pci_driver = {
+struct ci13xxx_platform_data penwell_pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= 0,
 	.power_budget	= 200,
@@ -51,12 +51,12 @@ struct ci13xxx_udc_driver penwell_pci_driver = {
 static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 				       const struct pci_device_id *id)
 {
-	struct ci13xxx_udc_driver *driver = (void *)id->driver_data;
+	struct ci13xxx_platform_data *platdata = (void *)id->driver_data;
 	struct platform_device *plat_ci;
 	struct resource res[3];
 	int retval = 0, nres = 2;
 
-	if (!driver) {
+	if (!platdata) {
 		dev_err(&pdev->dev, "device doesn't provide driver data\n");
 		return -ENODEV;
 	}
@@ -95,7 +95,7 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 		goto put_platform;
 	}
 
-	retval = platform_device_add_data(plat_ci, driver, sizeof(*driver));
+	retval = platform_device_add_data(plat_ci, platdata, sizeof(*platdata));
 	if (retval)
 		goto put_platform;
 
@@ -147,19 +147,19 @@ static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev)
 static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
 	{
 		PCI_DEVICE(0x153F, 0x1004),
-		.driver_data = (kernel_ulong_t)&pci_driver,
+		.driver_data = (kernel_ulong_t)&pci_platdata,
 	},
 	{
 		PCI_DEVICE(0x153F, 0x1006),
-		.driver_data = (kernel_ulong_t)&pci_driver,
+		.driver_data = (kernel_ulong_t)&pci_platdata,
 	},
 	{
 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
-		.driver_data = (kernel_ulong_t)&langwell_pci_driver,
+		.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
 	},
 	{
 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
-		.driver_data = (kernel_ulong_t)&penwell_pci_driver,
+		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
 	},
 	{ 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
 };
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 15e03b3..9a883bd 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -179,7 +179,7 @@ static int hw_device_init(struct ci13xxx *ci, void __iomem *base)
 	ci->hw_bank.abs = base;
 
 	ci->hw_bank.cap = ci->hw_bank.abs;
-	ci->hw_bank.cap += ci->udc_driver->capoffset;
+	ci->hw_bank.cap += ci->platdata->capoffset;
 	ci->hw_bank.op = ci->hw_bank.cap + ioread8(ci->hw_bank.cap);
 
 	hw_alloc_regmap(ci, false);
@@ -227,11 +227,11 @@ int hw_device_reset(struct ci13xxx *ci, u32 mode)
 		udelay(10);		/* not RTOS friendly */
 
 
-	if (ci->udc_driver->notify_event)
-		ci->udc_driver->notify_event(ci,
+	if (ci->platdata->notify_event)
+		ci->platdata->notify_event(ci,
 			CI13XXX_CONTROLLER_RESET_EVENT);
 
-	if (ci->udc_driver->flags & CI13XXX_DISABLE_STREAMING)
+	if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING)
 		hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS);
 
 	/* USBMODE should be configured step by step */
@@ -364,7 +364,7 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 	}
 
 	ci->dev = dev;
-	ci->udc_driver = dev->platform_data;
+	ci->platdata = dev->platform_data;
 
 	ret = hw_device_init(ci, base);
 	if (ret < 0) {
@@ -419,7 +419,7 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 	}
 
 	platform_set_drvdata(pdev, ci);
-	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->udc_driver->name,
+	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name,
 			  ci);
 	if (ret)
 		goto stop;
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 9eacd21..4a4fdb8 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -116,7 +116,7 @@ static int host_start(struct ci13xxx *ci)
 	hcd->regs = ci->hw_bank.abs;
 	hcd->has_tt = 1;
 
-	hcd->power_budget = ci->udc_driver->power_budget;
+	hcd->power_budget = ci->platdata->power_budget;
 
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = ci->hw_bank.cap;
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index cdb9212..68584bb 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1362,7 +1362,7 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 	unsigned long flags;
 	int gadget_ready = 0;
 
-	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS))
+	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
 		return -EOPNOTSUPP;
 
 	spin_lock_irqsave(&udc->lock, flags);
@@ -1378,8 +1378,8 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 			hw_device_state(udc, udc->ep0out->qh.dma);
 		} else {
 			hw_device_state(udc, 0);
-			if (udc->udc_driver->notify_event)
-				udc->udc_driver->notify_event(udc,
+			if (udc->platdata->notify_event)
+				udc->platdata->notify_event(udc,
 				CI13XXX_CONTROLLER_STOPPED_EVENT);
 			_gadget_stop_activity(&udc->gadget);
 			pm_runtime_put_sync(&_gadget->dev);
@@ -1514,9 +1514,9 @@ static int ci13xxx_start(struct usb_gadget *gadget,
 
 	udc->driver = driver;
 	pm_runtime_get_sync(&udc->gadget.dev);
-	if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) {
+	if (udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
 		if (udc->vbus_active) {
-			if (udc->udc_driver->flags & CI13XXX_REGS_SHARED)
+			if (udc->platdata->flags & CI13XXX_REGS_SHARED)
 				hw_device_reset(udc, USBMODE_CM_DC);
 		} else {
 			pm_runtime_put_sync(&udc->gadget.dev);
@@ -1544,11 +1544,11 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
 
 	spin_lock_irqsave(&udc->lock, flags);
 
-	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) ||
+	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
 			udc->vbus_active) {
 		hw_device_state(udc, 0);
-		if (udc->udc_driver->notify_event)
-			udc->udc_driver->notify_event(udc,
+		if (udc->platdata->notify_event)
+			udc->platdata->notify_event(udc,
 			CI13XXX_CONTROLLER_STOPPED_EVENT);
 		udc->driver = NULL;
 		spin_unlock_irqrestore(&udc->lock, flags);
@@ -1581,7 +1581,7 @@ static irqreturn_t udc_irq(struct ci13xxx *udc)
 
 	spin_lock(&udc->lock);
 
-	if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
+	if (udc->platdata->flags & CI13XXX_REGS_SHARED) {
 		if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
 				USBMODE_CM_DC) {
 			spin_unlock(&udc->lock);
@@ -1653,7 +1653,7 @@ static int udc_start(struct ci13xxx *udc)
 	udc->gadget.speed        = USB_SPEED_UNKNOWN;
 	udc->gadget.max_speed    = USB_SPEED_HIGH;
 	udc->gadget.is_otg       = 0;
-	udc->gadget.name         = udc->udc_driver->name;
+	udc->gadget.name         = udc->platdata->name;
 
 	INIT_LIST_HEAD(&udc->gadget.ep_list);
 
@@ -1686,14 +1686,14 @@ static int udc_start(struct ci13xxx *udc)
 
 	udc->transceiver = usb_get_transceiver();
 
-	if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
+	if (udc->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
 		if (udc->transceiver == NULL) {
 			retval = -ENODEV;
 			goto free_pools;
 		}
 	}
 
-	if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) {
+	if (!(udc->platdata->flags & CI13XXX_REGS_SHARED)) {
 		retval = hw_device_reset(udc, USBMODE_CM_DC);
 		if (retval)
 			goto put_transceiver;
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index edb90d6..d4cf9706 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -6,7 +6,7 @@
 #define __LINUX_USB_CHIPIDEA_H
 
 struct ci13xxx;
-struct ci13xxx_udc_driver {
+struct ci13xxx_platform_data {
 	const char	*name;
 	/* offset of the capability registers */
 	uintptr_t	 capoffset;
-- 
1.7.9.5

[PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Richard Zhao]

struct ci13xxx represent the controller, which may be device or host,
so name its variables as ci.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/ci.h          |   26 +-
 drivers/usb/chipidea/ci13xxx_msm.c |   12 +-
 drivers/usb/chipidea/debug.c       |  146 ++++-----
 drivers/usb/chipidea/udc.c         |  630 ++++++++++++++++++------------------
 include/linux/usb/chipidea.h       |    2 +-
 5 files changed, 408 insertions(+), 408 deletions(-)

diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 0b09330..9655e35 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -36,7 +36,7 @@
  * @name: string description of the endpoint
  * @qh: queue head for this endpoint
  * @wedge: is the endpoint wedged
- * @udc: pointer to the controller
+ * @ci: pointer to the controller
  * @lock: pointer to controller's spinlock
  * @td_pool: pointer to controller's TD pool
  */
@@ -54,7 +54,7 @@ struct ci13xxx_ep {
 	int					wedge;
 
 	/* global resources */
-	struct ci13xxx				*udc;
+	struct ci13xxx				*ci;
 	spinlock_t				*lock;
 	struct dma_pool				*td_pool;
 };
@@ -250,9 +250,9 @@ static inline int ffs_nr(u32 x)
  *
  * This function returns register contents
  */
-static inline u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask)
+static inline u32 hw_read(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask)
 {
-	return ioread32(udc->hw_bank.regmap[reg]) & mask;
+	return ioread32(ci->hw_bank.regmap[reg]) & mask;
 }
 
 /**
@@ -261,14 +261,14 @@ static inline u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask)
  * @mask: bitfield mask
  * @data: new value
  */
-static inline void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline void hw_write(struct ci13xxx *ci, enum ci13xxx_regs reg,
 			    u32 mask, u32 data)
 {
 	if (~mask)
-		data = (ioread32(udc->hw_bank.regmap[reg]) & ~mask)
+		data = (ioread32(ci->hw_bank.regmap[reg]) & ~mask)
 			| (data & mask);
 
-	iowrite32(data, udc->hw_bank.regmap[reg]);
+	iowrite32(data, ci->hw_bank.regmap[reg]);
 }
 
 /**
@@ -278,12 +278,12 @@ static inline void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
  *
  * This function returns register contents
  */
-static inline u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline u32 hw_test_and_clear(struct ci13xxx *ci, enum ci13xxx_regs reg,
 				    u32 mask)
 {
-	u32 val = ioread32(udc->hw_bank.regmap[reg]) & mask;
+	u32 val = ioread32(ci->hw_bank.regmap[reg]) & mask;
 
-	iowrite32(val, udc->hw_bank.regmap[reg]);
+	iowrite32(val, ci->hw_bank.regmap[reg]);
 	return val;
 }
 
@@ -295,12 +295,12 @@ static inline u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg,
  *
  * This function returns register contents
  */
-static inline u32 hw_test_and_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline u32 hw_test_and_write(struct ci13xxx *ci, enum ci13xxx_regs reg,
 				    u32 mask, u32 data)
 {
-	u32 val = hw_read(udc, reg, ~0);
+	u32 val = hw_read(ci, reg, ~0);
 
-	hw_write(udc, reg, mask, data);
+	hw_write(ci, reg, mask, data);
 	return (val & mask) >> ffs_nr(mask);
 }
 
diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 21a7c2e..a7dd9f1 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -15,11 +15,11 @@
 
 #include "ci.h"
 
-#define MSM_USB_BASE	(udc->hw_bank.abs)
+#define MSM_USB_BASE	(ci->hw_bank.abs)
 
-static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
+static void ci13xxx_msm_notify_event(struct ci13xxx *ci, unsigned event)
 {
-	struct device *dev = udc->gadget.dev.parent;
+	struct device *dev = ci->gadget.dev.parent;
 	int val;
 
 	switch (event) {
@@ -34,13 +34,13 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
 		 * Put the transceiver in non-driving mode. Otherwise host
 		 * may not detect soft-disconnection.
 		 */
-		val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
+		val = usb_phy_io_read(ci->transceiver, ULPI_FUNC_CTRL);
 		val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
 		val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
-		usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
+		usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL);
 		break;
 	default:
-		dev_dbg(dev, "unknown ci13xxx_udc event\n");
+		dev_dbg(dev, "unknown ci13xxx event\n");
 		break;
 	}
 }
diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c
index c4b3e15..c6f50a2 100644
--- a/drivers/usb/chipidea/debug.c
+++ b/drivers/usb/chipidea/debug.c
@@ -68,15 +68,15 @@ void dbg_interrupt(u32 intmask)
  *
  * This function returns number of registers read
  */
-static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size)
+static size_t hw_register_read(struct ci13xxx *ci, u32 *buf, size_t size)
 {
 	unsigned i;
 
-	if (size > udc->hw_bank.size)
-		size = udc->hw_bank.size;
+	if (size > ci->hw_bank.size)
+		size = ci->hw_bank.size;
 
 	for (i = 0; i < size; i++)
-		buf[i] = hw_read(udc, i * sizeof(u32), ~0);
+		buf[i] = hw_read(ci, i * sizeof(u32), ~0);
 
 	return size;
 }
@@ -88,18 +88,18 @@ static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size)
  *
  * This function returns an error code
  */
-static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data)
+static int hw_register_write(struct ci13xxx *ci, u16 addr, u32 data)
 {
 	/* align */
 	addr /= sizeof(u32);
 
-	if (addr >= udc->hw_bank.size)
+	if (addr >= ci->hw_bank.size)
 		return -EINVAL;
 
 	/* align */
 	addr *= sizeof(u32);
 
-	hw_write(udc, addr, ~0, data);
+	hw_write(ci, addr, ~0, data);
 	return 0;
 }
 
@@ -110,13 +110,13 @@ static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data)
  *
  * This function returns an error code
  */
-static int hw_intr_clear(struct ci13xxx *udc, int n)
+static int hw_intr_clear(struct ci13xxx *ci, int n)
 {
 	if (n >= REG_BITS)
 		return -EINVAL;
 
-	hw_write(udc, OP_USBINTR, BIT(n), 0);
-	hw_write(udc, OP_USBSTS,  BIT(n), BIT(n));
+	hw_write(ci, OP_USBINTR, BIT(n), 0);
+	hw_write(ci, OP_USBSTS,  BIT(n), BIT(n));
 	return 0;
 }
 
@@ -127,15 +127,15 @@ static int hw_intr_clear(struct ci13xxx *udc, int n)
  *
  * This function returns an error code
  */
-static int hw_intr_force(struct ci13xxx *udc, int n)
+static int hw_intr_force(struct ci13xxx *ci, int n)
 {
 	if (n >= REG_BITS)
 		return -EINVAL;
 
-	hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
-	hw_write(udc, OP_USBINTR,  BIT(n), BIT(n));
-	hw_write(udc, OP_USBSTS,   BIT(n), BIT(n));
-	hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, 0);
+	hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
+	hw_write(ci, OP_USBINTR,  BIT(n), BIT(n));
+	hw_write(ci, OP_USBSTS,   BIT(n), BIT(n));
+	hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, 0);
 	return 0;
 }
 
@@ -147,12 +147,12 @@ static int hw_intr_force(struct ci13xxx *udc, int n)
 static ssize_t show_device(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
-	struct usb_gadget *gadget = &udc->gadget;
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+	struct usb_gadget *gadget = &ci->gadget;
 	int n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
@@ -188,8 +188,8 @@ static DEVICE_ATTR(device, S_IRUSR, show_device, NULL);
 static ssize_t show_driver(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
-	struct usb_gadget_driver *driver = udc->driver;
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+	struct usb_gadget_driver *driver = ci->driver;
 	int n = 0;
 
 	if (attr == NULL || buf == NULL) {
@@ -412,22 +412,22 @@ static DEVICE_ATTR(events, S_IRUSR | S_IWUSR, show_events, store_events);
 static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	u32 intr;
 	unsigned i, j, n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
 
 	/*n += scnprintf(buf + n, PAGE_SIZE - n,
-		       "status = %08x\n", hw_read_intr_status(udc));
+		       "status = %08x\n", hw_read_intr_status(ci));
 	n += scnprintf(buf + n, PAGE_SIZE - n,
-	"enable = %08x\n", hw_read_intr_enable(udc));*/
+	"enable = %08x\n", hw_read_intr_enable(ci));*/
 
 	n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
 		       isr_statistics.test);
@@ -471,7 +471,7 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 			n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
 	}
 
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return n;
 }
@@ -485,31 +485,31 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 static ssize_t store_inters(struct device *dev, struct device_attribute *attr,
 			    const char *buf, size_t count)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned en, bit;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "EINVAL\n");
+		dev_err(ci->dev, "EINVAL\n");
 		goto done;
 	}
 
 	if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) {
-		dev_err(udc->dev, "<1|0> <bit>: enable|disable interrupt\n");
+		dev_err(ci->dev, "<1|0> <bit>: enable|disable interrupt\n");
 		goto done;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
 	if (en) {
-		if (hw_intr_force(udc, bit))
+		if (hw_intr_force(ci, bit))
 			dev_err(dev, "invalid bit number\n");
 		else
 			isr_statistics.test++;
 	} else {
-		if (hw_intr_clear(udc, bit))
+		if (hw_intr_clear(ci, bit))
 			dev_err(dev, "invalid bit number\n");
 	}
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
  done:
 	return count;
@@ -524,18 +524,18 @@ static DEVICE_ATTR(inters, S_IRUSR | S_IWUSR, show_inters, store_inters);
 static ssize_t show_port_test(struct device *dev,
 			      struct device_attribute *attr, char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned mode;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "EINVAL\n");
+		dev_err(ci->dev, "EINVAL\n");
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	mode = hw_port_test_get(udc);
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	mode = hw_port_test_get(ci);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode);
 }
@@ -549,24 +549,24 @@ static ssize_t store_port_test(struct device *dev,
 			       struct device_attribute *attr,
 			       const char *buf, size_t count)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned mode;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		goto done;
 	}
 
 	if (sscanf(buf, "%u", &mode) != 1) {
-		dev_err(udc->dev, "<mode>: set port test mode");
+		dev_err(ci->dev, "<mode>: set port test mode");
 		goto done;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (hw_port_test_set(udc, mode))
-		dev_err(udc->dev, "invalid mode\n");
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	if (hw_port_test_set(ci, mode))
+		dev_err(ci->dev, "invalid mode\n");
+	spin_unlock_irqrestore(&ci->lock, flags);
 
  done:
 	return count;
@@ -582,20 +582,20 @@ static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR,
 static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned i, j, n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	for (i = 0; i < udc->hw_ep_max/2; i++) {
-		struct ci13xxx_ep *mEpRx = &udc->ci13xxx_ep[i];
+	spin_lock_irqsave(&ci->lock, flags);
+	for (i = 0; i < ci->hw_ep_max/2; i++) {
+		struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i];
 		struct ci13xxx_ep *mEpTx =
-			&udc->ci13xxx_ep[i + udc->hw_ep_max/2];
+			&ci->ci13xxx_ep[i + ci->hw_ep_max/2];
 		n += scnprintf(buf + n, PAGE_SIZE - n,
 			       "EP=%02i: RX=%08X TX=%08X\n",
 			       i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
@@ -606,7 +606,7 @@ static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
 				       *((u32 *)mEpTx->qh.ptr + j));
 		}
 	}
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return n;
 }
@@ -621,25 +621,25 @@ static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL);
 static ssize_t show_registers(struct device *dev,
 			      struct device_attribute *attr, char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	u32 *dump;
 	unsigned i, k, n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
 	dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL);
 	if (!dump) {
-		dev_err(udc->dev, "%s: out of memory\n", __func__);
+		dev_err(ci->dev, "%s: out of memory\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	k = hw_register_read(udc, dump, DUMP_ENTRIES);
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	k = hw_register_read(ci, dump, DUMP_ENTRIES);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	for (i = 0; i < k; i++) {
 		n += scnprintf(buf + n, PAGE_SIZE - n,
@@ -660,24 +660,24 @@ static ssize_t store_registers(struct device *dev,
 			       struct device_attribute *attr,
 			       const char *buf, size_t count)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long addr, data, flags;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		goto done;
 	}
 
 	if (sscanf(buf, "%li %li", &addr, &data) != 2) {
-		dev_err(udc->dev,
+		dev_err(ci->dev,
 			"<addr> <data>: write data to register address\n");
 		goto done;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (hw_register_write(udc, addr, data))
-		dev_err(udc->dev, "invalid address range\n");
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	if (hw_register_write(ci, addr, data))
+		dev_err(ci->dev, "invalid address range\n");
+	spin_unlock_irqrestore(&ci->lock, flags);
 
  done:
 	return count;
@@ -693,34 +693,34 @@ static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR,
 static ssize_t show_requests(struct device *dev, struct device_attribute *attr,
 			     char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	struct list_head   *ptr = NULL;
 	struct ci13xxx_req *req = NULL;
 	unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32);
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	for (i = 0; i < udc->hw_ep_max; i++)
-		list_for_each(ptr, &udc->ci13xxx_ep[i].qh.queue)
+	spin_lock_irqsave(&ci->lock, flags);
+	for (i = 0; i < ci->hw_ep_max; i++)
+		list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue)
 		{
 			req = list_entry(ptr, struct ci13xxx_req, queue);
 
 			n += scnprintf(buf + n, PAGE_SIZE - n,
 					"EP=%02i: TD=%08X %s\n",
-					i % udc->hw_ep_max/2, (u32)req->dma,
-					((i < udc->hw_ep_max/2) ? "RX" : "TX"));
+					i % ci->hw_ep_max/2, (u32)req->dma,
+					((i < ci->hw_ep_max/2) ? "RX" : "TX"));
 
 			for (j = 0; j < qSize; j++)
 				n += scnprintf(buf + n, PAGE_SIZE - n,
 						" %04X:    %08X\n", j,
 						*((u32 *)req->ptr + j));
 		}
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return n;
 }
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 68584bb..ca9b387 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1,5 +1,5 @@
 /*
- * udc.c - ChipIdea UDC driver
+ * ci.c - ChipIdea UDC driver
  *
  * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
  *
@@ -66,11 +66,11 @@ static inline int hw_ep_bit(int num, int dir)
 	return num + (dir ? 16 : 0);
 }
 
-static inline int ep_to_bit(struct ci13xxx *udc, int n)
+static inline int ep_to_bit(struct ci13xxx *ci, int n)
 {
-	int fill = 16 - udc->hw_ep_max / 2;
+	int fill = 16 - ci->hw_ep_max / 2;
 
-	if (n >= udc->hw_ep_max / 2)
+	if (n >= ci->hw_ep_max / 2)
 		n += fill;
 
 	return n;
@@ -83,17 +83,17 @@ static inline int ep_to_bit(struct ci13xxx *udc, int n)
  *
  * This function returns an error code
  */
-static int hw_device_state(struct ci13xxx *udc, u32 dma)
+static int hw_device_state(struct ci13xxx *ci, u32 dma)
 {
 	if (dma) {
-		hw_write(udc, OP_ENDPTLISTADDR, ~0, dma);
+		hw_write(ci, OP_ENDPTLISTADDR, ~0, dma);
 		/* interrupt, error, port change, reset, sleep/suspend */
-		hw_write(udc, OP_USBINTR, ~0,
+		hw_write(ci, OP_USBINTR, ~0,
 			     USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
-		hw_write(udc, OP_USBCMD, USBCMD_RS, USBCMD_RS);
+		hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
 	} else {
-		hw_write(udc, OP_USBCMD, USBCMD_RS, 0);
-		hw_write(udc, OP_USBINTR, ~0, 0);
+		hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+		hw_write(ci, OP_USBINTR, ~0, 0);
 	}
 	return 0;
 }
@@ -105,16 +105,16 @@ static int hw_device_state(struct ci13xxx *udc, u32 dma)
  *
  * This function returns an error code
  */
-static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_flush(struct ci13xxx *ci, int num, int dir)
 {
 	int n = hw_ep_bit(num, dir);
 
 	do {
 		/* flush any pending transfer */
-		hw_write(udc, OP_ENDPTFLUSH, BIT(n), BIT(n));
-		while (hw_read(udc, OP_ENDPTFLUSH, BIT(n)))
+		hw_write(ci, OP_ENDPTFLUSH, BIT(n), BIT(n));
+		while (hw_read(ci, OP_ENDPTFLUSH, BIT(n)))
 			cpu_relax();
-	} while (hw_read(udc, OP_ENDPTSTAT, BIT(n)));
+	} while (hw_read(ci, OP_ENDPTSTAT, BIT(n)));
 
 	return 0;
 }
@@ -126,10 +126,10 @@ static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
  *
  * This function returns an error code
  */
-static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_disable(struct ci13xxx *ci, int num, int dir)
 {
-	hw_ep_flush(udc, num, dir);
-	hw_write(udc, OP_ENDPTCTRL + num,
+	hw_ep_flush(ci, num, dir);
+	hw_write(ci, OP_ENDPTCTRL + num,
 		 dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
 	return 0;
 }
@@ -142,7 +142,7 @@ static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
  *
  * This function returns an error code
  */
-static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
+static int hw_ep_enable(struct ci13xxx *ci, int num, int dir, int type)
 {
 	u32 mask, data;
 
@@ -165,7 +165,7 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
 		mask |= ENDPTCTRL_RXE;  /* enable  */
 		data |= ENDPTCTRL_RXE;
 	}
-	hw_write(udc, OP_ENDPTCTRL + num, mask, data);
+	hw_write(ci, OP_ENDPTCTRL + num, mask, data);
 	return 0;
 }
 
@@ -176,11 +176,11 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
  *
  * This function returns 1 if endpoint halted
  */
-static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_get_halt(struct ci13xxx *ci, int num, int dir)
 {
 	u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
 
-	return hw_read(udc, OP_ENDPTCTRL + num, mask) ? 1 : 0;
+	return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0;
 }
 
 /**
@@ -190,10 +190,10 @@ static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
  *
  * This function returns setup status
  */
-static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
+static int hw_test_and_clear_setup_status(struct ci13xxx *ci, int n)
 {
-	n = ep_to_bit(udc, n);
-	return hw_test_and_clear(udc, OP_ENDPTSETUPSTAT, BIT(n));
+	n = ep_to_bit(ci, n);
+	return hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(n));
 }
 
 /**
@@ -204,18 +204,18 @@ static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
  *
  * This function returns an error code
  */
-static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
+static int hw_ep_prime(struct ci13xxx *ci, int num, int dir, int is_ctrl)
 {
 	int n = hw_ep_bit(num, dir);
 
-	if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+	if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
 		return -EAGAIN;
 
-	hw_write(udc, OP_ENDPTPRIME, BIT(n), BIT(n));
+	hw_write(ci, OP_ENDPTPRIME, BIT(n), BIT(n));
 
-	while (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+	while (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
 		cpu_relax();
-	if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+	if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
 		return -EAGAIN;
 
 	/* status shoult be tested according with manual but it doesn't work */
@@ -231,7 +231,7 @@ static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
  *
  * This function returns an error code
  */
-static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
+static int hw_ep_set_halt(struct ci13xxx *ci, int num, int dir, int value)
 {
 	if (value != 0 && value != 1)
 		return -EINVAL;
@@ -242,9 +242,9 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
 		u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
 
 		/* data toggle - reserved for EP0 but it's in ESS */
-		hw_write(udc, reg, mask_xs|mask_xr,
+		hw_write(ci, reg, mask_xs|mask_xr,
 			  value ? mask_xs : mask_xr);
-	} while (value != hw_ep_get_halt(udc, num, dir));
+	} while (value != hw_ep_get_halt(ci, num, dir));
 
 	return 0;
 }
@@ -254,10 +254,10 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
  *
  * This function returns true if high speed port
  */
-static int hw_port_is_high_speed(struct ci13xxx *udc)
+static int hw_port_is_high_speed(struct ci13xxx *ci)
 {
-	return udc->hw_bank.lpm ? hw_read(udc, OP_DEVLC, DEVLC_PSPD) :
-		hw_read(udc, OP_PORTSC, PORTSC_HSP);
+	return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) :
+		hw_read(ci, OP_PORTSC, PORTSC_HSP);
 }
 
 /**
@@ -265,9 +265,9 @@ static int hw_port_is_high_speed(struct ci13xxx *udc)
  *
  * This function returns register data
  */
-static u32 hw_read_intr_enable(struct ci13xxx *udc)
+static u32 hw_read_intr_enable(struct ci13xxx *ci)
 {
-	return hw_read(udc, OP_USBINTR, ~0);
+	return hw_read(ci, OP_USBINTR, ~0);
 }
 
 /**
@@ -275,9 +275,9 @@ static u32 hw_read_intr_enable(struct ci13xxx *udc)
  *
  * This function returns register data
  */
-static u32 hw_read_intr_status(struct ci13xxx *udc)
+static u32 hw_read_intr_status(struct ci13xxx *ci)
 {
-	return hw_read(udc, OP_USBSTS, ~0);
+	return hw_read(ci, OP_USBSTS, ~0);
 }
 
 /**
@@ -287,10 +287,10 @@ static u32 hw_read_intr_status(struct ci13xxx *udc)
  *
  * This function returns complete status
  */
-static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
+static int hw_test_and_clear_complete(struct ci13xxx *ci, int n)
 {
-	n = ep_to_bit(udc, n);
-	return hw_test_and_clear(udc, OP_ENDPTCOMPLETE, BIT(n));
+	n = ep_to_bit(ci, n);
+	return hw_test_and_clear(ci, OP_ENDPTCOMPLETE, BIT(n));
 }
 
 /**
@@ -299,11 +299,11 @@ static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
  *
  * This function returns active interrutps
  */
-static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
+static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci)
 {
-	u32 reg = hw_read_intr_status(udc) & hw_read_intr_enable(udc);
+	u32 reg = hw_read_intr_status(ci) & hw_read_intr_enable(ci);
 
-	hw_write(udc, OP_USBSTS, ~0, reg);
+	hw_write(ci, OP_USBSTS, ~0, reg);
 	return reg;
 }
 
@@ -313,9 +313,9 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
  *
  * This function returns guard value
  */
-static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_clear_setup_guard(struct ci13xxx *ci)
 {
-	return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, 0);
+	return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, 0);
 }
 
 /**
@@ -324,9 +324,9 @@ static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
  *
  * This function returns guard value
  */
-static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_set_setup_guard(struct ci13xxx *ci)
 {
-	return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
+	return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
 }
 
 /**
@@ -336,9 +336,9 @@ static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
  * This function explicitly sets the address, without the "USBADRA" (advance)
  * feature, which is not supported by older versions of the controller.
  */
-static void hw_usb_set_address(struct ci13xxx *udc, u8 value)
+static void hw_usb_set_address(struct ci13xxx *ci, u8 value)
 {
-	hw_write(udc, OP_DEVICEADDR, DEVICEADDR_USBADR,
+	hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR,
 		 value << ffs_nr(DEVICEADDR_USBADR));
 }
 
@@ -348,21 +348,21 @@ static void hw_usb_set_address(struct ci13xxx *udc, u8 value)
  *
  * This function returns an error code
  */
-static int hw_usb_reset(struct ci13xxx *udc)
+static int hw_usb_reset(struct ci13xxx *ci)
 {
-	hw_usb_set_address(udc, 0);
+	hw_usb_set_address(ci, 0);
 
 	/* ESS flushes only at end?!? */
-	hw_write(udc, OP_ENDPTFLUSH,    ~0, ~0);
+	hw_write(ci, OP_ENDPTFLUSH,    ~0, ~0);
 
 	/* clear setup token semaphores */
-	hw_write(udc, OP_ENDPTSETUPSTAT, 0,  0);
+	hw_write(ci, OP_ENDPTSETUPSTAT, 0,  0);
 
 	/* clear complete status */
-	hw_write(udc, OP_ENDPTCOMPLETE,  0,  0);
+	hw_write(ci, OP_ENDPTCOMPLETE,  0,  0);
 
 	/* wait until all bits cleared */
-	while (hw_read(udc, OP_ENDPTPRIME, ~0))
+	while (hw_read(ci, OP_ENDPTPRIME, ~0))
 		udelay(10);             /* not RTOS friendly */
 
 	/* reset all endpoints ? */
@@ -394,7 +394,7 @@ static inline u8 _usb_addr(struct ci13xxx_ep *ep)
  */
 static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 {
-	struct ci13xxx *udc = mEp->udc;
+	struct ci13xxx *ci = mEp->ci;
 	unsigned i;
 	int ret = 0;
 	unsigned length = mReq->req.length;
@@ -417,7 +417,7 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 		if (!mReq->req.no_interrupt)
 			mReq->zptr->token   |= TD_IOC;
 	}
-	ret = usb_gadget_map_request(&udc->gadget, &mReq->req, mEp->dir);
+	ret = usb_gadget_map_request(&ci->gadget, &mReq->req, mEp->dir);
 	if (ret)
 		return ret;
 
@@ -453,13 +453,13 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 		else
 			mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK;
 		wmb();
-		if (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+		if (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
 			goto done;
 		do {
-			hw_write(udc, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
-			tmp_stat = hw_read(udc, OP_ENDPTSTAT, BIT(n));
-		} while (!hw_read(udc, OP_USBCMD, USBCMD_ATDTW));
-		hw_write(udc, OP_USBCMD, USBCMD_ATDTW, 0);
+			hw_write(ci, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
+			tmp_stat = hw_read(ci, OP_ENDPTSTAT, BIT(n));
+		} while (!hw_read(ci, OP_USBCMD, USBCMD_ATDTW));
+		hw_write(ci, OP_USBCMD, USBCMD_ATDTW, 0);
 		if (tmp_stat)
 			goto done;
 	}
@@ -471,7 +471,7 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 
 	wmb();   /* synchronize before ep prime */
 
-	ret = hw_ep_prime(udc, mEp->num, mEp->dir,
+	ret = hw_ep_prime(ci, mEp->num, mEp->dir,
 			   mEp->type == USB_ENDPOINT_XFER_CONTROL);
 done:
 	return ret;
@@ -501,7 +501,7 @@ static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 
 	mReq->req.status = 0;
 
-	usb_gadget_unmap_request(&mEp->udc->gadget, &mReq->req, mEp->dir);
+	usb_gadget_unmap_request(&mEp->ci->gadget, &mReq->req, mEp->dir);
 
 	mReq->req.status = mReq->ptr->token & TD_STATUS;
 	if ((TD_STATUS_HALTED & mReq->req.status) != 0)
@@ -533,7 +533,7 @@ __acquires(mEp->lock)
 	if (mEp == NULL)
 		return -EINVAL;
 
-	hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+	hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
 
 	while (!list_empty(&mEp->qh.queue)) {
 
@@ -562,33 +562,33 @@ __acquires(mEp->lock)
 static int _gadget_stop_activity(struct usb_gadget *gadget)
 {
 	struct usb_ep *ep;
-	struct ci13xxx    *udc = container_of(gadget, struct ci13xxx, gadget);
+	struct ci13xxx    *ci = container_of(gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 
-	spin_lock_irqsave(&udc->lock, flags);
-	udc->gadget.speed = USB_SPEED_UNKNOWN;
-	udc->remote_wakeup = 0;
-	udc->suspended = 0;
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	ci->gadget.speed = USB_SPEED_UNKNOWN;
+	ci->remote_wakeup = 0;
+	ci->suspended = 0;
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	/* flush all endpoints */
 	gadget_for_each_ep(ep, gadget) {
 		usb_ep_fifo_flush(ep);
 	}
-	usb_ep_fifo_flush(&udc->ep0out->ep);
-	usb_ep_fifo_flush(&udc->ep0in->ep);
+	usb_ep_fifo_flush(&ci->ep0out->ep);
+	usb_ep_fifo_flush(&ci->ep0in->ep);
 
-	if (udc->driver)
-		udc->driver->disconnect(gadget);
+	if (ci->driver)
+		ci->driver->disconnect(gadget);
 
 	/* make sure to disable all endpoints */
 	gadget_for_each_ep(ep, gadget) {
 		usb_ep_disable(ep);
 	}
 
-	if (udc->status != NULL) {
-		usb_ep_free_request(&udc->ep0in->ep, udc->status);
-		udc->status = NULL;
+	if (ci->status != NULL) {
+		usb_ep_free_request(&ci->ep0in->ep, ci->status);
+		ci->status = NULL;
 	}
 
 	return 0;
@@ -599,36 +599,36 @@ static int _gadget_stop_activity(struct usb_gadget *gadget)
  *****************************************************************************/
 /**
  * isr_reset_handler: USB reset interrupt handler
- * @udc: UDC device
+ * @ci: UDC device
  *
  * This function resets USB engine after a bus reset occurred
  */
-static void isr_reset_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_reset_handler(struct ci13xxx *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
 {
 	int retval;
 
 	dbg_event(0xFF, "BUS RST", 0);
 
-	spin_unlock(&udc->lock);
-	retval = _gadget_stop_activity(&udc->gadget);
+	spin_unlock(&ci->lock);
+	retval = _gadget_stop_activity(&ci->gadget);
 	if (retval)
 		goto done;
 
-	retval = hw_usb_reset(udc);
+	retval = hw_usb_reset(ci);
 	if (retval)
 		goto done;
 
-	udc->status = usb_ep_alloc_request(&udc->ep0in->ep, GFP_ATOMIC);
-	if (udc->status == NULL)
+	ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC);
+	if (ci->status == NULL)
 		retval = -ENOMEM;
 
 done:
-	spin_lock(&udc->lock);
+	spin_lock(&ci->lock);
 
 	if (retval)
-		dev_err(udc->dev, "error: %i\n", retval);
+		dev_err(ci->dev, "error: %i\n", retval);
 }
 
 /**
@@ -649,17 +649,17 @@ static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req)
 
 /**
  * isr_get_status_response: get_status request response
- * @udc: udc struct
+ * @ci: ci struct
  * @setup: setup request packet
  *
  * This function returns an error code
  */
-static int isr_get_status_response(struct ci13xxx *udc,
+static int isr_get_status_response(struct ci13xxx *ci,
 				   struct usb_ctrlrequest *setup)
 __releases(mEp->lock)
 __acquires(mEp->lock)
 {
-	struct ci13xxx_ep *mEp = udc->ep0in;
+	struct ci13xxx_ep *mEp = ci->ep0in;
 	struct usb_request *req = NULL;
 	gfp_t gfp_flags = GFP_ATOMIC;
 	int dir, num, retval;
@@ -683,14 +683,14 @@ __acquires(mEp->lock)
 
 	if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
 		/* Assume that device is bus powered for now. */
-		*(u16 *)req->buf = udc->remote_wakeup << 1;
+		*(u16 *)req->buf = ci->remote_wakeup << 1;
 		retval = 0;
 	} else if ((setup->bRequestType & USB_RECIP_MASK) \
 		   == USB_RECIP_ENDPOINT) {
 		dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ?
 			TX : RX;
 		num =  le16_to_cpu(setup->wIndex) & USB_ENDPOINT_NUMBER_MASK;
-		*(u16 *)req->buf = hw_ep_get_halt(udc, num, dir);
+		*(u16 *)req->buf = hw_ep_get_halt(ci, num, dir);
 	}
 	/* else do nothing; reserved for future use */
 
@@ -722,39 +722,39 @@ __acquires(mEp->lock)
 static void
 isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req)
 {
-	struct ci13xxx *udc = req->context;
+	struct ci13xxx *ci = req->context;
 	unsigned long flags;
 
-	if (udc->setaddr) {
-		hw_usb_set_address(udc, udc->address);
-		udc->setaddr = false;
+	if (ci->setaddr) {
+		hw_usb_set_address(ci, ci->address);
+		ci->setaddr = false;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (udc->test_mode)
-		hw_port_test_set(udc, udc->test_mode);
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	if (ci->test_mode)
+		hw_port_test_set(ci, ci->test_mode);
+	spin_unlock_irqrestore(&ci->lock, flags);
 }
 
 /**
  * isr_setup_status_phase: queues the status phase of a setup transation
- * @udc: udc struct
+ * @ci: ci struct
  *
  * This function returns an error code
  */
-static int isr_setup_status_phase(struct ci13xxx *udc)
+static int isr_setup_status_phase(struct ci13xxx *ci)
 __releases(mEp->lock)
 __acquires(mEp->lock)
 {
 	int retval;
 	struct ci13xxx_ep *mEp;
 
-	mEp = (udc->ep0_dir == TX) ? udc->ep0out : udc->ep0in;
-	udc->status->context = udc;
-	udc->status->complete = isr_setup_status_complete;
+	mEp = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in;
+	ci->status->context = ci;
+	ci->status->complete = isr_setup_status_complete;
 
 	spin_unlock(mEp->lock);
-	retval = usb_ep_queue(&mEp->ep, udc->status, GFP_ATOMIC);
+	retval = usb_ep_queue(&mEp->ep, ci->status, GFP_ATOMIC);
 	spin_lock(mEp->lock);
 
 	return retval;
@@ -789,7 +789,7 @@ __acquires(mEp->lock)
 			spin_unlock(mEp->lock);
 			if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) &&
 					mReq->req.length)
-				mEpTemp = mEp->udc->ep0in;
+				mEpTemp = mEp->ci->ep0in;
 			mReq->req.complete(&mEpTemp->ep, &mReq->req);
 			spin_lock(mEp->lock);
 		}
@@ -805,48 +805,48 @@ __acquires(mEp->lock)
 
 /**
  * isr_tr_complete_handler: transaction complete interrupt handler
- * @udc: UDC descriptor
+ * @ci: UDC descriptor
  *
  * This function handles traffic events
  */
-static void isr_tr_complete_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_tr_complete_handler(struct ci13xxx *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
 {
 	unsigned i;
 	u8 tmode = 0;
 
-	for (i = 0; i < udc->hw_ep_max; i++) {
-		struct ci13xxx_ep *mEp  = &udc->ci13xxx_ep[i];
+	for (i = 0; i < ci->hw_ep_max; i++) {
+		struct ci13xxx_ep *mEp  = &ci->ci13xxx_ep[i];
 		int type, num, dir, err = -EINVAL;
 		struct usb_ctrlrequest req;
 
 		if (mEp->ep.desc == NULL)
 			continue;   /* not configured */
 
-		if (hw_test_and_clear_complete(udc, i)) {
+		if (hw_test_and_clear_complete(ci, i)) {
 			err = isr_tr_complete_low(mEp);
 			if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
 				if (err > 0)   /* needs status phase */
-					err = isr_setup_status_phase(udc);
+					err = isr_setup_status_phase(ci);
 				if (err < 0) {
 					dbg_event(_usb_addr(mEp),
 						  "ERROR", err);
-					spin_unlock(&udc->lock);
+					spin_unlock(&ci->lock);
 					if (usb_ep_set_halt(&mEp->ep))
-						dev_err(udc->dev,
+						dev_err(ci->dev,
 							"error: ep_set_halt\n");
-					spin_lock(&udc->lock);
+					spin_lock(&ci->lock);
 				}
 			}
 		}
 
 		if (mEp->type != USB_ENDPOINT_XFER_CONTROL ||
-		    !hw_test_and_clear_setup_status(udc, i))
+		    !hw_test_and_clear_setup_status(ci, i))
 			continue;
 
 		if (i != 0) {
-			dev_warn(udc->dev, "ctrl traffic at endpoint %d\n", i);
+			dev_warn(ci->dev, "ctrl traffic at endpoint %d\n", i);
 			continue;
 		}
 
@@ -854,18 +854,18 @@ __acquires(udc->lock)
 		 * Flush data and handshake transactions of previous
 		 * setup packet.
 		 */
-		_ep_nuke(udc->ep0out);
-		_ep_nuke(udc->ep0in);
+		_ep_nuke(ci->ep0out);
+		_ep_nuke(ci->ep0in);
 
 		/* read_setup_packet */
 		do {
-			hw_test_and_set_setup_guard(udc);
+			hw_test_and_set_setup_guard(ci);
 			memcpy(&req, &mEp->qh.ptr->setup, sizeof(req));
-		} while (!hw_test_and_clear_setup_guard(udc));
+		} while (!hw_test_and_clear_setup_guard(ci));
 
 		type = req.bRequestType;
 
-		udc->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
+		ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
 
 		dbg_setup(_usb_addr(mEp), &req);
 
@@ -880,23 +880,23 @@ __acquires(udc->lock)
 				dir = num & USB_ENDPOINT_DIR_MASK;
 				num &= USB_ENDPOINT_NUMBER_MASK;
 				if (dir) /* TX */
-					num += udc->hw_ep_max/2;
-				if (!udc->ci13xxx_ep[num].wedge) {
-					spin_unlock(&udc->lock);
+					num += ci->hw_ep_max/2;
+				if (!ci->ci13xxx_ep[num].wedge) {
+					spin_unlock(&ci->lock);
 					err = usb_ep_clear_halt(
-						&udc->ci13xxx_ep[num].ep);
-					spin_lock(&udc->lock);
+						&ci->ci13xxx_ep[num].ep);
+					spin_lock(&ci->lock);
 					if (err)
 						break;
 				}
-				err = isr_setup_status_phase(udc);
+				err = isr_setup_status_phase(ci);
 			} else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
 					le16_to_cpu(req.wValue) ==
 					USB_DEVICE_REMOTE_WAKEUP) {
 				if (req.wLength != 0)
 					break;
-				udc->remote_wakeup = 0;
-				err = isr_setup_status_phase(udc);
+				ci->remote_wakeup = 0;
+				err = isr_setup_status_phase(ci);
 			} else {
 				goto delegate;
 			}
@@ -909,7 +909,7 @@ __acquires(udc->lock)
 			if (le16_to_cpu(req.wLength) != 2 ||
 			    le16_to_cpu(req.wValue)  != 0)
 				break;
-			err = isr_get_status_response(udc, &req);
+			err = isr_get_status_response(ci, &req);
 			break;
 		case USB_REQ_SET_ADDRESS:
 			if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
@@ -917,9 +917,9 @@ __acquires(udc->lock)
 			if (le16_to_cpu(req.wLength) != 0 ||
 			    le16_to_cpu(req.wIndex)  != 0)
 				break;
-			udc->address = (u8)le16_to_cpu(req.wValue);
-			udc->setaddr = true;
-			err = isr_setup_status_phase(udc);
+			ci->address = (u8)le16_to_cpu(req.wValue);
+			ci->setaddr = true;
+			err = isr_setup_status_phase(ci);
 			break;
 		case USB_REQ_SET_FEATURE:
 			if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
@@ -931,20 +931,20 @@ __acquires(udc->lock)
 				dir = num & USB_ENDPOINT_DIR_MASK;
 				num &= USB_ENDPOINT_NUMBER_MASK;
 				if (dir) /* TX */
-					num += udc->hw_ep_max/2;
+					num += ci->hw_ep_max/2;
 
-				spin_unlock(&udc->lock);
-				err = usb_ep_set_halt(&udc->ci13xxx_ep[num].ep);
-				spin_lock(&udc->lock);
+				spin_unlock(&ci->lock);
+				err = usb_ep_set_halt(&ci->ci13xxx_ep[num].ep);
+				spin_lock(&ci->lock);
 				if (!err)
-					isr_setup_status_phase(udc);
+					isr_setup_status_phase(ci);
 			} else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
 				if (req.wLength != 0)
 					break;
 				switch (le16_to_cpu(req.wValue)) {
 				case USB_DEVICE_REMOTE_WAKEUP:
-					udc->remote_wakeup = 1;
-					err = isr_setup_status_phase(udc);
+					ci->remote_wakeup = 1;
+					err = isr_setup_status_phase(ci);
 					break;
 				case USB_DEVICE_TEST_MODE:
 					tmode = le16_to_cpu(req.wIndex) >> 8;
@@ -954,9 +954,9 @@ __acquires(udc->lock)
 					case TEST_SE0_NAK:
 					case TEST_PACKET:
 					case TEST_FORCE_EN:
-						udc->test_mode = tmode;
+						ci->test_mode = tmode;
 						err = isr_setup_status_phase(
-								udc);
+								ci);
 						break;
 					default:
 						break;
@@ -971,21 +971,21 @@ __acquires(udc->lock)
 		default:
 delegate:
 			if (req.wLength == 0)   /* no data phase */
-				udc->ep0_dir = TX;
+				ci->ep0_dir = TX;
 
-			spin_unlock(&udc->lock);
-			err = udc->driver->setup(&udc->gadget, &req);
-			spin_lock(&udc->lock);
+			spin_unlock(&ci->lock);
+			err = ci->driver->setup(&ci->gadget, &req);
+			spin_lock(&ci->lock);
 			break;
 		}
 
 		if (err < 0) {
 			dbg_event(_usb_addr(mEp), "ERROR", err);
 
-			spin_unlock(&udc->lock);
+			spin_unlock(&ci->lock);
 			if (usb_ep_set_halt(&mEp->ep))
-				dev_err(udc->dev, "error: ep_set_halt\n");
-			spin_lock(&udc->lock);
+				dev_err(ci->dev, "error: ep_set_halt\n");
+			spin_lock(&ci->lock);
 		}
 	}
 }
@@ -1015,7 +1015,7 @@ static int ep_enable(struct usb_ep *ep,
 	mEp->ep.desc = desc;
 
 	if (!list_empty(&mEp->qh.queue))
-		dev_warn(mEp->udc->dev, "enabling a non-empty endpoint!\n");
+		dev_warn(mEp->ci->dev, "enabling a non-empty endpoint!\n");
 
 	mEp->dir  = usb_endpoint_dir_in(desc) ? TX : RX;
 	mEp->num  = usb_endpoint_num(desc);
@@ -1043,7 +1043,7 @@ static int ep_enable(struct usb_ep *ep,
 	 * is always enabled
 	 */
 	if (mEp->num)
-		retval |= hw_ep_enable(mEp->udc, mEp->num, mEp->dir, mEp->type);
+		retval |= hw_ep_enable(mEp->ci, mEp->num, mEp->dir, mEp->type);
 
 	spin_unlock_irqrestore(mEp->lock, flags);
 	return retval;
@@ -1074,7 +1074,7 @@ static int ep_disable(struct usb_ep *ep)
 		dbg_event(_usb_addr(mEp), "DISABLE", 0);
 
 		retval |= _ep_nuke(mEp);
-		retval |= hw_ep_disable(mEp->udc, mEp->num, mEp->dir);
+		retval |= hw_ep_disable(mEp->ci, mEp->num, mEp->dir);
 
 		if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
 			mEp->dir = (mEp->dir == TX) ? RX : TX;
@@ -1131,7 +1131,7 @@ static void ep_free_request(struct usb_ep *ep, struct usb_request *req)
 	if (ep == NULL || req == NULL) {
 		return;
 	} else if (!list_empty(&mReq->queue)) {
-		dev_err(mEp->udc->dev, "freeing queued request\n");
+		dev_err(mEp->ci->dev, "freeing queued request\n");
 		return;
 	}
 
@@ -1156,7 +1156,7 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
 {
 	struct ci13xxx_ep  *mEp  = container_of(ep,  struct ci13xxx_ep, ep);
 	struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
-	struct ci13xxx *udc = mEp->udc;
+	struct ci13xxx *ci = mEp->ci;
 	int retval = 0;
 	unsigned long flags;
 
@@ -1167,12 +1167,12 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
 
 	if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
 		if (req->length)
-			mEp = (udc->ep0_dir == RX) ?
-			       udc->ep0out : udc->ep0in;
+			mEp = (ci->ep0_dir == RX) ?
+			       ci->ep0out : ci->ep0in;
 		if (!list_empty(&mEp->qh.queue)) {
 			_ep_nuke(mEp);
 			retval = -EOVERFLOW;
-			dev_warn(mEp->udc->dev, "endpoint ctrl %X nuked\n",
+			dev_warn(mEp->ci->dev, "endpoint ctrl %X nuked\n",
 				 _usb_addr(mEp));
 		}
 	}
@@ -1180,14 +1180,14 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
 	/* first nuke then test link, e.g. previous status has not sent */
 	if (!list_empty(&mReq->queue)) {
 		retval = -EBUSY;
-		dev_err(mEp->udc->dev, "request already in queue\n");
+		dev_err(mEp->ci->dev, "request already in queue\n");
 		goto done;
 	}
 
 	if (req->length > 4 * CI13XXX_PAGE_SIZE) {
 		req->length = 4 * CI13XXX_PAGE_SIZE;
 		retval = -EMSGSIZE;
-		dev_warn(mEp->udc->dev, "request length truncated\n");
+		dev_warn(mEp->ci->dev, "request length truncated\n");
 	}
 
 	dbg_queue(_usb_addr(mEp), req, retval);
@@ -1230,12 +1230,12 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
 
 	dbg_event(_usb_addr(mEp), "DEQUEUE", 0);
 
-	hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+	hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
 
 	/* pop request */
 	list_del_init(&mReq->queue);
 
-	usb_gadget_unmap_request(&mEp->udc->gadget, req, mEp->dir);
+	usb_gadget_unmap_request(&mEp->ci->gadget, req, mEp->dir);
 
 	req->status = -ECONNRESET;
 
@@ -1277,7 +1277,7 @@ static int ep_set_halt(struct usb_ep *ep, int value)
 	direction = mEp->dir;
 	do {
 		dbg_event(_usb_addr(mEp), "HALT", value);
-		retval |= hw_ep_set_halt(mEp->udc, mEp->num, mEp->dir, value);
+		retval |= hw_ep_set_halt(mEp->ci, mEp->num, mEp->dir, value);
 
 		if (!value)
 			mEp->wedge = 0;
@@ -1325,14 +1325,14 @@ static void ep_fifo_flush(struct usb_ep *ep)
 	unsigned long flags;
 
 	if (ep == NULL) {
-		dev_err(mEp->udc->dev, "%02X: -EINVAL\n", _usb_addr(mEp));
+		dev_err(mEp->ci->dev, "%02X: -EINVAL\n", _usb_addr(mEp));
 		return;
 	}
 
 	spin_lock_irqsave(mEp->lock, flags);
 
 	dbg_event(_usb_addr(mEp), "FFLUSH", 0);
-	hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+	hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
 
 	spin_unlock_irqrestore(mEp->lock, flags);
 }
@@ -1358,30 +1358,30 @@ static const struct usb_ep_ops usb_ep_ops = {
  *****************************************************************************/
 static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 {
-	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 	int gadget_ready = 0;
 
-	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
+	if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
 		return -EOPNOTSUPP;
 
-	spin_lock_irqsave(&udc->lock, flags);
-	udc->vbus_active = is_active;
-	if (udc->driver)
+	spin_lock_irqsave(&ci->lock, flags);
+	ci->vbus_active = is_active;
+	if (ci->driver)
 		gadget_ready = 1;
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	if (gadget_ready) {
 		if (is_active) {
 			pm_runtime_get_sync(&_gadget->dev);
-			hw_device_reset(udc, USBMODE_CM_DC);
-			hw_device_state(udc, udc->ep0out->qh.dma);
+			hw_device_reset(ci, USBMODE_CM_DC);
+			hw_device_state(ci, ci->ep0out->qh.dma);
 		} else {
-			hw_device_state(udc, 0);
-			if (udc->platdata->notify_event)
-				udc->platdata->notify_event(udc,
+			hw_device_state(ci, 0);
+			if (ci->platdata->notify_event)
+				ci->platdata->notify_event(ci,
 				CI13XXX_CONTROLLER_STOPPED_EVENT);
-			_gadget_stop_activity(&udc->gadget);
+			_gadget_stop_activity(&ci->gadget);
 			pm_runtime_put_sync(&_gadget->dev);
 		}
 	}
@@ -1391,31 +1391,31 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 
 static int ci13xxx_wakeup(struct usb_gadget *_gadget)
 {
-	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 	int ret = 0;
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (!udc->remote_wakeup) {
+	spin_lock_irqsave(&ci->lock, flags);
+	if (!ci->remote_wakeup) {
 		ret = -EOPNOTSUPP;
 		goto out;
 	}
-	if (!hw_read(udc, OP_PORTSC, PORTSC_SUSP)) {
+	if (!hw_read(ci, OP_PORTSC, PORTSC_SUSP)) {
 		ret = -EINVAL;
 		goto out;
 	}
-	hw_write(udc, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
+	hw_write(ci, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
 out:
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 	return ret;
 }
 
 static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
 {
-	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
 
-	if (udc->transceiver)
-		return usb_phy_set_power(udc->transceiver, mA);
+	if (ci->transceiver)
+		return usb_phy_set_power(ci->transceiver, mA);
 	return -ENOTSUPP;
 }
 
@@ -1436,28 +1436,28 @@ static const struct usb_gadget_ops usb_gadget_ops = {
 	.udc_stop	= ci13xxx_stop,
 };
 
-static int init_eps(struct ci13xxx *udc)
+static int init_eps(struct ci13xxx *ci)
 {
 	int retval = 0, i, j;
 
-	for (i = 0; i < udc->hw_ep_max/2; i++)
+	for (i = 0; i < ci->hw_ep_max/2; i++)
 		for (j = RX; j <= TX; j++) {
-			int k = i + j * udc->hw_ep_max/2;
-			struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[k];
+			int k = i + j * ci->hw_ep_max/2;
+			struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[k];
 
 			scnprintf(mEp->name, sizeof(mEp->name), "ep%i%s", i,
 					(j == TX)  ? "in" : "out");
 
-			mEp->udc          = udc;
-			mEp->lock         = &udc->lock;
-			mEp->td_pool      = udc->td_pool;
+			mEp->ci          = ci;
+			mEp->lock         = &ci->lock;
+			mEp->td_pool      = ci->td_pool;
 
 			mEp->ep.name      = mEp->name;
 			mEp->ep.ops       = &usb_ep_ops;
 			mEp->ep.maxpacket = CTRL_PAYLOAD_MAX;
 
 			INIT_LIST_HEAD(&mEp->qh.queue);
-			mEp->qh.ptr = dma_pool_alloc(udc->qh_pool, GFP_KERNEL,
+			mEp->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
 						     &mEp->qh.dma);
 			if (mEp->qh.ptr == NULL)
 				retval = -ENOMEM;
@@ -1470,14 +1470,14 @@ static int init_eps(struct ci13xxx *udc)
 			 */
 			if (i == 0) {
 				if (j == RX)
-					udc->ep0out = mEp;
+					ci->ep0out = mEp;
 				else
-					udc->ep0in = mEp;
+					ci->ep0in = mEp;
 
 				continue;
 			}
 
-			list_add_tail(&mEp->ep.ep_list, &udc->gadget.ep_list);
+			list_add_tail(&mEp->ep.ep_list, &ci->gadget.ep_list);
 		}
 
 	return retval;
@@ -1493,7 +1493,7 @@ static int init_eps(struct ci13xxx *udc)
 static int ci13xxx_start(struct usb_gadget *gadget,
 			 struct usb_gadget_driver *driver)
 {
-	struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 	int retval = -ENOMEM;
 
@@ -1501,35 +1501,35 @@ static int ci13xxx_start(struct usb_gadget *gadget,
 		return -EINVAL;
 
 
-	udc->ep0out->ep.desc = &ctrl_endpt_out_desc;
-	retval = usb_ep_enable(&udc->ep0out->ep);
+	ci->ep0out->ep.desc = &ctrl_endpt_out_desc;
+	retval = usb_ep_enable(&ci->ep0out->ep);
 	if (retval)
 		return retval;
 
-	udc->ep0in->ep.desc = &ctrl_endpt_in_desc;
-	retval = usb_ep_enable(&udc->ep0in->ep);
+	ci->ep0in->ep.desc = &ctrl_endpt_in_desc;
+	retval = usb_ep_enable(&ci->ep0in->ep);
 	if (retval)
 		return retval;
-	spin_lock_irqsave(&udc->lock, flags);
-
-	udc->driver = driver;
-	pm_runtime_get_sync(&udc->gadget.dev);
-	if (udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
-		if (udc->vbus_active) {
-			if (udc->platdata->flags & CI13XXX_REGS_SHARED)
-				hw_device_reset(udc, USBMODE_CM_DC);
+	spin_lock_irqsave(&ci->lock, flags);
+
+	ci->driver = driver;
+	pm_runtime_get_sync(&ci->gadget.dev);
+	if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
+		if (ci->vbus_active) {
+			if (ci->platdata->flags & CI13XXX_REGS_SHARED)
+				hw_device_reset(ci, USBMODE_CM_DC);
 		} else {
-			pm_runtime_put_sync(&udc->gadget.dev);
+			pm_runtime_put_sync(&ci->gadget.dev);
 			goto done;
 		}
 	}
 
-	retval = hw_device_state(udc, udc->ep0out->qh.dma);
+	retval = hw_device_state(ci, ci->ep0out->qh.dma);
 	if (retval)
-		pm_runtime_put_sync(&udc->gadget.dev);
+		pm_runtime_put_sync(&ci->gadget.dev);
 
  done:
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 	return retval;
 }
 
@@ -1539,25 +1539,25 @@ static int ci13xxx_start(struct usb_gadget *gadget,
 static int ci13xxx_stop(struct usb_gadget *gadget,
 			struct usb_gadget_driver *driver)
 {
-	struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 
-	spin_lock_irqsave(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
 
-	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
-			udc->vbus_active) {
-		hw_device_state(udc, 0);
-		if (udc->platdata->notify_event)
-			udc->platdata->notify_event(udc,
+	if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
+			ci->vbus_active) {
+		hw_device_state(ci, 0);
+		if (ci->platdata->notify_event)
+			ci->platdata->notify_event(ci,
 			CI13XXX_CONTROLLER_STOPPED_EVENT);
-		udc->driver = NULL;
-		spin_unlock_irqrestore(&udc->lock, flags);
-		_gadget_stop_activity(&udc->gadget);
-		spin_lock_irqsave(&udc->lock, flags);
-		pm_runtime_put(&udc->gadget.dev);
+		ci->driver = NULL;
+		spin_unlock_irqrestore(&ci->lock, flags);
+		_gadget_stop_activity(&ci->gadget);
+		spin_lock_irqsave(&ci->lock, flags);
+		pm_runtime_put(&ci->gadget.dev);
 	}
 
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return 0;
 }
@@ -1566,64 +1566,64 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
  * BUS block
  *****************************************************************************/
 /**
- * udc_irq: udc interrupt handler
+ * udc_irq: ci interrupt handler
  *
  * This function returns IRQ_HANDLED if the IRQ has been handled
  * It locks access to registers
  */
-static irqreturn_t udc_irq(struct ci13xxx *udc)
+static irqreturn_t udc_irq(struct ci13xxx *ci)
 {
 	irqreturn_t retval;
 	u32 intr;
 
-	if (udc == NULL)
+	if (ci == NULL)
 		return IRQ_HANDLED;
 
-	spin_lock(&udc->lock);
+	spin_lock(&ci->lock);
 
-	if (udc->platdata->flags & CI13XXX_REGS_SHARED) {
-		if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
+	if (ci->platdata->flags & CI13XXX_REGS_SHARED) {
+		if (hw_read(ci, OP_USBMODE, USBMODE_CM) !=
 				USBMODE_CM_DC) {
-			spin_unlock(&udc->lock);
+			spin_unlock(&ci->lock);
 			return IRQ_NONE;
 		}
 	}
-	intr = hw_test_and_clear_intr_active(udc);
+	intr = hw_test_and_clear_intr_active(ci);
 	dbg_interrupt(intr);
 
 	if (intr) {
 		/* order defines priority - do NOT change it */
 		if (USBi_URI & intr)
-			isr_reset_handler(udc);
+			isr_reset_handler(ci);
 
 		if (USBi_PCI & intr) {
-			udc->gadget.speed = hw_port_is_high_speed(udc) ?
+			ci->gadget.speed = hw_port_is_high_speed(ci) ?
 				USB_SPEED_HIGH : USB_SPEED_FULL;
-			if (udc->suspended && udc->driver->resume) {
-				spin_unlock(&udc->lock);
-				udc->driver->resume(&udc->gadget);
-				spin_lock(&udc->lock);
-				udc->suspended = 0;
+			if (ci->suspended && ci->driver->resume) {
+				spin_unlock(&ci->lock);
+				ci->driver->resume(&ci->gadget);
+				spin_lock(&ci->lock);
+				ci->suspended = 0;
 			}
 		}
 
 		if (USBi_UI  & intr)
-			isr_tr_complete_handler(udc);
+			isr_tr_complete_handler(ci);
 
 		if (USBi_SLI & intr) {
-			if (udc->gadget.speed != USB_SPEED_UNKNOWN &&
-			    udc->driver->suspend) {
-				udc->suspended = 1;
-				spin_unlock(&udc->lock);
-				udc->driver->suspend(&udc->gadget);
-				spin_lock(&udc->lock);
+			if (ci->gadget.speed != USB_SPEED_UNKNOWN &&
+			    ci->driver->suspend) {
+				ci->suspended = 1;
+				spin_unlock(&ci->lock);
+				ci->driver->suspend(&ci->gadget);
+				spin_lock(&ci->lock);
 			}
 		}
 		retval = IRQ_HANDLED;
 	} else {
 		retval = IRQ_NONE;
 	}
-	spin_unlock(&udc->lock);
+	spin_unlock(&ci->lock);
 
 	return retval;
 }
@@ -1640,109 +1640,109 @@ static void udc_release(struct device *dev)
 
 /**
  * udc_start: initialize gadget role
- * @udc: chipidea controller
+ * @ci: chipidea controller
  */
-static int udc_start(struct ci13xxx *udc)
+static int udc_start(struct ci13xxx *ci)
 {
-	struct device *dev = udc->dev;
+	struct device *dev = ci->dev;
 	int retval = 0;
 
-	spin_lock_init(&udc->lock);
+	spin_lock_init(&ci->lock);
 
-	udc->gadget.ops          = &usb_gadget_ops;
-	udc->gadget.speed        = USB_SPEED_UNKNOWN;
-	udc->gadget.max_speed    = USB_SPEED_HIGH;
-	udc->gadget.is_otg       = 0;
-	udc->gadget.name         = udc->platdata->name;
+	ci->gadget.ops          = &usb_gadget_ops;
+	ci->gadget.speed        = USB_SPEED_UNKNOWN;
+	ci->gadget.max_speed    = USB_SPEED_HIGH;
+	ci->gadget.is_otg       = 0;
+	ci->gadget.name         = ci->platdata->name;
 
-	INIT_LIST_HEAD(&udc->gadget.ep_list);
+	INIT_LIST_HEAD(&ci->gadget.ep_list);
 
-	dev_set_name(&udc->gadget.dev, "gadget");
-	udc->gadget.dev.dma_mask = dev->dma_mask;
-	udc->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask;
-	udc->gadget.dev.parent   = dev;
-	udc->gadget.dev.release  = udc_release;
+	dev_set_name(&ci->gadget.dev, "gadget");
+	ci->gadget.dev.dma_mask = dev->dma_mask;
+	ci->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask;
+	ci->gadget.dev.parent   = dev;
+	ci->gadget.dev.release  = udc_release;
 
 	/* alloc resources */
-	udc->qh_pool = dma_pool_create("ci13xxx_qh", dev,
+	ci->qh_pool = dma_pool_create("ci13xxx_qh", dev,
 				       sizeof(struct ci13xxx_qh),
 				       64, CI13XXX_PAGE_SIZE);
-	if (udc->qh_pool == NULL)
+	if (ci->qh_pool == NULL)
 		return -ENOMEM;
 
-	udc->td_pool = dma_pool_create("ci13xxx_td", dev,
+	ci->td_pool = dma_pool_create("ci13xxx_td", dev,
 				       sizeof(struct ci13xxx_td),
 				       64, CI13XXX_PAGE_SIZE);
-	if (udc->td_pool == NULL) {
+	if (ci->td_pool == NULL) {
 		retval = -ENOMEM;
 		goto free_qh_pool;
 	}
 
-	retval = init_eps(udc);
+	retval = init_eps(ci);
 	if (retval)
 		goto free_pools;
 
-	udc->gadget.ep0 = &udc->ep0in->ep;
+	ci->gadget.ep0 = &ci->ep0in->ep;
 
-	udc->transceiver = usb_get_transceiver();
+	ci->transceiver = usb_get_transceiver();
 
-	if (udc->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
-		if (udc->transceiver == NULL) {
+	if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
+		if (ci->transceiver == NULL) {
 			retval = -ENODEV;
 			goto free_pools;
 		}
 	}
 
-	if (!(udc->platdata->flags & CI13XXX_REGS_SHARED)) {
-		retval = hw_device_reset(udc, USBMODE_CM_DC);
+	if (!(ci->platdata->flags & CI13XXX_REGS_SHARED)) {
+		retval = hw_device_reset(ci, USBMODE_CM_DC);
 		if (retval)
 			goto put_transceiver;
 	}
 
-	retval = device_register(&udc->gadget.dev);
+	retval = device_register(&ci->gadget.dev);
 	if (retval) {
-		put_device(&udc->gadget.dev);
+		put_device(&ci->gadget.dev);
 		goto put_transceiver;
 	}
 
-	retval = dbg_create_files(&udc->gadget.dev);
+	retval = dbg_create_files(&ci->gadget.dev);
 	if (retval)
 		goto unreg_device;
 
-	if (udc->transceiver) {
-		retval = otg_set_peripheral(udc->transceiver->otg,
-						&udc->gadget);
+	if (ci->transceiver) {
+		retval = otg_set_peripheral(ci->transceiver->otg,
+						&ci->gadget);
 		if (retval)
 			goto remove_dbg;
 	}
 
-	retval = usb_add_gadget_udc(dev, &udc->gadget);
+	retval = usb_add_gadget_udc(dev, &ci->gadget);
 	if (retval)
 		goto remove_trans;
 
-	pm_runtime_no_callbacks(&udc->gadget.dev);
-	pm_runtime_enable(&udc->gadget.dev);
+	pm_runtime_no_callbacks(&ci->gadget.dev);
+	pm_runtime_enable(&ci->gadget.dev);
 
 	return retval;
 
 remove_trans:
-	if (udc->transceiver) {
-		otg_set_peripheral(udc->transceiver->otg, &udc->gadget);
-		usb_put_transceiver(udc->transceiver);
+	if (ci->transceiver) {
+		otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
+		usb_put_transceiver(ci->transceiver);
 	}
 
 	dev_err(dev, "error = %i\n", retval);
 remove_dbg:
-	dbg_remove_files(&udc->gadget.dev);
+	dbg_remove_files(&ci->gadget.dev);
 unreg_device:
-	device_unregister(&udc->gadget.dev);
+	device_unregister(&ci->gadget.dev);
 put_transceiver:
-	if (udc->transceiver)
-		usb_put_transceiver(udc->transceiver);
+	if (ci->transceiver)
+		usb_put_transceiver(ci->transceiver);
 free_pools:
-	dma_pool_destroy(udc->td_pool);
+	dma_pool_destroy(ci->td_pool);
 free_qh_pool:
-	dma_pool_destroy(udc->qh_pool);
+	dma_pool_destroy(ci->qh_pool);
 	return retval;
 }
 
@@ -1751,32 +1751,32 @@ free_qh_pool:
  *
  * No interrupts active, the IRQ has been released
  */
-static void udc_stop(struct ci13xxx *udc)
+static void udc_stop(struct ci13xxx *ci)
 {
 	int i;
 
-	if (udc == NULL)
+	if (ci == NULL)
 		return;
 
-	usb_del_gadget_udc(&udc->gadget);
+	usb_del_gadget_udc(&ci->gadget);
 
-	for (i = 0; i < udc->hw_ep_max; i++) {
-		struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+	for (i = 0; i < ci->hw_ep_max; i++) {
+		struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i];
 
-		dma_pool_free(udc->qh_pool, mEp->qh.ptr, mEp->qh.dma);
+		dma_pool_free(ci->qh_pool, mEp->qh.ptr, mEp->qh.dma);
 	}
 
-	dma_pool_destroy(udc->td_pool);
-	dma_pool_destroy(udc->qh_pool);
+	dma_pool_destroy(ci->td_pool);
+	dma_pool_destroy(ci->qh_pool);
 
-	if (udc->transceiver) {
-		otg_set_peripheral(udc->transceiver->otg, NULL);
-		usb_put_transceiver(udc->transceiver);
+	if (ci->transceiver) {
+		otg_set_peripheral(ci->transceiver->otg, NULL);
+		usb_put_transceiver(ci->transceiver);
 	}
-	dbg_remove_files(&udc->gadget.dev);
-	device_unregister(&udc->gadget.dev);
+	dbg_remove_files(&ci->gadget.dev);
+	device_unregister(&ci->gadget.dev);
 	/* my kobject is dynamic, I swear! */
-	memset(&udc->gadget, 0, sizeof(udc->gadget));
+	memset(&ci->gadget, 0, sizeof(ci->gadget));
 }
 
 /**
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index d4cf9706..d2f7e49 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -19,7 +19,7 @@ struct ci13xxx_platform_data {
 
 #define CI13XXX_CONTROLLER_RESET_EVENT		0
 #define CI13XXX_CONTROLLER_STOPPED_EVENT	1
-	void	(*notify_event) (struct ci13xxx *udc, unsigned event);
+	void	(*notify_event) (struct ci13xxx *ci, unsigned event);
 };
 
 /* Default offset of capability registers */
-- 
1.7.9.5


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[PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Richard Zhao]

struct ci13xxx represent the controller, which may be device or host,
so name its variables as ci.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/ci.h          |   26 +-
 drivers/usb/chipidea/ci13xxx_msm.c |   12 +-
 drivers/usb/chipidea/debug.c       |  146 ++++-----
 drivers/usb/chipidea/udc.c         |  630 ++++++++++++++++++------------------
 include/linux/usb/chipidea.h       |    2 +-
 5 files changed, 408 insertions(+), 408 deletions(-)

diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 0b09330..9655e35 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -36,7 +36,7 @@
  * @name: string description of the endpoint
  * @qh: queue head for this endpoint
  * @wedge: is the endpoint wedged
- * @udc: pointer to the controller
+ * @ci: pointer to the controller
  * @lock: pointer to controller's spinlock
  * @td_pool: pointer to controller's TD pool
  */
@@ -54,7 +54,7 @@ struct ci13xxx_ep {
 	int					wedge;
 
 	/* global resources */
-	struct ci13xxx				*udc;
+	struct ci13xxx				*ci;
 	spinlock_t				*lock;
 	struct dma_pool				*td_pool;
 };
@@ -250,9 +250,9 @@ static inline int ffs_nr(u32 x)
  *
  * This function returns register contents
  */
-static inline u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask)
+static inline u32 hw_read(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask)
 {
-	return ioread32(udc->hw_bank.regmap[reg]) & mask;
+	return ioread32(ci->hw_bank.regmap[reg]) & mask;
 }
 
 /**
@@ -261,14 +261,14 @@ static inline u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask)
  * @mask: bitfield mask
  * @data: new value
  */
-static inline void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline void hw_write(struct ci13xxx *ci, enum ci13xxx_regs reg,
 			    u32 mask, u32 data)
 {
 	if (~mask)
-		data = (ioread32(udc->hw_bank.regmap[reg]) & ~mask)
+		data = (ioread32(ci->hw_bank.regmap[reg]) & ~mask)
 			| (data & mask);
 
-	iowrite32(data, udc->hw_bank.regmap[reg]);
+	iowrite32(data, ci->hw_bank.regmap[reg]);
 }
 
 /**
@@ -278,12 +278,12 @@ static inline void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
  *
  * This function returns register contents
  */
-static inline u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline u32 hw_test_and_clear(struct ci13xxx *ci, enum ci13xxx_regs reg,
 				    u32 mask)
 {
-	u32 val = ioread32(udc->hw_bank.regmap[reg]) & mask;
+	u32 val = ioread32(ci->hw_bank.regmap[reg]) & mask;
 
-	iowrite32(val, udc->hw_bank.regmap[reg]);
+	iowrite32(val, ci->hw_bank.regmap[reg]);
 	return val;
 }
 
@@ -295,12 +295,12 @@ static inline u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg,
  *
  * This function returns register contents
  */
-static inline u32 hw_test_and_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline u32 hw_test_and_write(struct ci13xxx *ci, enum ci13xxx_regs reg,
 				    u32 mask, u32 data)
 {
-	u32 val = hw_read(udc, reg, ~0);
+	u32 val = hw_read(ci, reg, ~0);
 
-	hw_write(udc, reg, mask, data);
+	hw_write(ci, reg, mask, data);
 	return (val & mask) >> ffs_nr(mask);
 }
 
diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 21a7c2e..a7dd9f1 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -15,11 +15,11 @@
 
 #include "ci.h"
 
-#define MSM_USB_BASE	(udc->hw_bank.abs)
+#define MSM_USB_BASE	(ci->hw_bank.abs)
 
-static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
+static void ci13xxx_msm_notify_event(struct ci13xxx *ci, unsigned event)
 {
-	struct device *dev = udc->gadget.dev.parent;
+	struct device *dev = ci->gadget.dev.parent;
 	int val;
 
 	switch (event) {
@@ -34,13 +34,13 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
 		 * Put the transceiver in non-driving mode. Otherwise host
 		 * may not detect soft-disconnection.
 		 */
-		val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
+		val = usb_phy_io_read(ci->transceiver, ULPI_FUNC_CTRL);
 		val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
 		val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
-		usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
+		usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL);
 		break;
 	default:
-		dev_dbg(dev, "unknown ci13xxx_udc event\n");
+		dev_dbg(dev, "unknown ci13xxx event\n");
 		break;
 	}
 }
diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c
index c4b3e15..c6f50a2 100644
--- a/drivers/usb/chipidea/debug.c
+++ b/drivers/usb/chipidea/debug.c
@@ -68,15 +68,15 @@ void dbg_interrupt(u32 intmask)
  *
  * This function returns number of registers read
  */
-static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size)
+static size_t hw_register_read(struct ci13xxx *ci, u32 *buf, size_t size)
 {
 	unsigned i;
 
-	if (size > udc->hw_bank.size)
-		size = udc->hw_bank.size;
+	if (size > ci->hw_bank.size)
+		size = ci->hw_bank.size;
 
 	for (i = 0; i < size; i++)
-		buf[i] = hw_read(udc, i * sizeof(u32), ~0);
+		buf[i] = hw_read(ci, i * sizeof(u32), ~0);
 
 	return size;
 }
@@ -88,18 +88,18 @@ static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size)
  *
  * This function returns an error code
  */
-static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data)
+static int hw_register_write(struct ci13xxx *ci, u16 addr, u32 data)
 {
 	/* align */
 	addr /= sizeof(u32);
 
-	if (addr >= udc->hw_bank.size)
+	if (addr >= ci->hw_bank.size)
 		return -EINVAL;
 
 	/* align */
 	addr *= sizeof(u32);
 
-	hw_write(udc, addr, ~0, data);
+	hw_write(ci, addr, ~0, data);
 	return 0;
 }
 
@@ -110,13 +110,13 @@ static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data)
  *
  * This function returns an error code
  */
-static int hw_intr_clear(struct ci13xxx *udc, int n)
+static int hw_intr_clear(struct ci13xxx *ci, int n)
 {
 	if (n >= REG_BITS)
 		return -EINVAL;
 
-	hw_write(udc, OP_USBINTR, BIT(n), 0);
-	hw_write(udc, OP_USBSTS,  BIT(n), BIT(n));
+	hw_write(ci, OP_USBINTR, BIT(n), 0);
+	hw_write(ci, OP_USBSTS,  BIT(n), BIT(n));
 	return 0;
 }
 
@@ -127,15 +127,15 @@ static int hw_intr_clear(struct ci13xxx *udc, int n)
  *
  * This function returns an error code
  */
-static int hw_intr_force(struct ci13xxx *udc, int n)
+static int hw_intr_force(struct ci13xxx *ci, int n)
 {
 	if (n >= REG_BITS)
 		return -EINVAL;
 
-	hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
-	hw_write(udc, OP_USBINTR,  BIT(n), BIT(n));
-	hw_write(udc, OP_USBSTS,   BIT(n), BIT(n));
-	hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, 0);
+	hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
+	hw_write(ci, OP_USBINTR,  BIT(n), BIT(n));
+	hw_write(ci, OP_USBSTS,   BIT(n), BIT(n));
+	hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, 0);
 	return 0;
 }
 
@@ -147,12 +147,12 @@ static int hw_intr_force(struct ci13xxx *udc, int n)
 static ssize_t show_device(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
-	struct usb_gadget *gadget = &udc->gadget;
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+	struct usb_gadget *gadget = &ci->gadget;
 	int n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
@@ -188,8 +188,8 @@ static DEVICE_ATTR(device, S_IRUSR, show_device, NULL);
 static ssize_t show_driver(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
-	struct usb_gadget_driver *driver = udc->driver;
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+	struct usb_gadget_driver *driver = ci->driver;
 	int n = 0;
 
 	if (attr == NULL || buf == NULL) {
@@ -412,22 +412,22 @@ static DEVICE_ATTR(events, S_IRUSR | S_IWUSR, show_events, store_events);
 static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	u32 intr;
 	unsigned i, j, n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
 
 	/*n += scnprintf(buf + n, PAGE_SIZE - n,
-		       "status = %08x\n", hw_read_intr_status(udc));
+		       "status = %08x\n", hw_read_intr_status(ci));
 	n += scnprintf(buf + n, PAGE_SIZE - n,
-	"enable = %08x\n", hw_read_intr_enable(udc));*/
+	"enable = %08x\n", hw_read_intr_enable(ci));*/
 
 	n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
 		       isr_statistics.test);
@@ -471,7 +471,7 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 			n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
 	}
 
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return n;
 }
@@ -485,31 +485,31 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 static ssize_t store_inters(struct device *dev, struct device_attribute *attr,
 			    const char *buf, size_t count)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned en, bit;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "EINVAL\n");
+		dev_err(ci->dev, "EINVAL\n");
 		goto done;
 	}
 
 	if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) {
-		dev_err(udc->dev, "<1|0> <bit>: enable|disable interrupt\n");
+		dev_err(ci->dev, "<1|0> <bit>: enable|disable interrupt\n");
 		goto done;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
 	if (en) {
-		if (hw_intr_force(udc, bit))
+		if (hw_intr_force(ci, bit))
 			dev_err(dev, "invalid bit number\n");
 		else
 			isr_statistics.test++;
 	} else {
-		if (hw_intr_clear(udc, bit))
+		if (hw_intr_clear(ci, bit))
 			dev_err(dev, "invalid bit number\n");
 	}
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
  done:
 	return count;
@@ -524,18 +524,18 @@ static DEVICE_ATTR(inters, S_IRUSR | S_IWUSR, show_inters, store_inters);
 static ssize_t show_port_test(struct device *dev,
 			      struct device_attribute *attr, char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned mode;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "EINVAL\n");
+		dev_err(ci->dev, "EINVAL\n");
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	mode = hw_port_test_get(udc);
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	mode = hw_port_test_get(ci);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode);
 }
@@ -549,24 +549,24 @@ static ssize_t store_port_test(struct device *dev,
 			       struct device_attribute *attr,
 			       const char *buf, size_t count)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned mode;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		goto done;
 	}
 
 	if (sscanf(buf, "%u", &mode) != 1) {
-		dev_err(udc->dev, "<mode>: set port test mode");
+		dev_err(ci->dev, "<mode>: set port test mode");
 		goto done;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (hw_port_test_set(udc, mode))
-		dev_err(udc->dev, "invalid mode\n");
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	if (hw_port_test_set(ci, mode))
+		dev_err(ci->dev, "invalid mode\n");
+	spin_unlock_irqrestore(&ci->lock, flags);
 
  done:
 	return count;
@@ -582,20 +582,20 @@ static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR,
 static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	unsigned i, j, n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	for (i = 0; i < udc->hw_ep_max/2; i++) {
-		struct ci13xxx_ep *mEpRx = &udc->ci13xxx_ep[i];
+	spin_lock_irqsave(&ci->lock, flags);
+	for (i = 0; i < ci->hw_ep_max/2; i++) {
+		struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i];
 		struct ci13xxx_ep *mEpTx =
-			&udc->ci13xxx_ep[i + udc->hw_ep_max/2];
+			&ci->ci13xxx_ep[i + ci->hw_ep_max/2];
 		n += scnprintf(buf + n, PAGE_SIZE - n,
 			       "EP=%02i: RX=%08X TX=%08X\n",
 			       i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
@@ -606,7 +606,7 @@ static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
 				       *((u32 *)mEpTx->qh.ptr + j));
 		}
 	}
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return n;
 }
@@ -621,25 +621,25 @@ static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL);
 static ssize_t show_registers(struct device *dev,
 			      struct device_attribute *attr, char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	u32 *dump;
 	unsigned i, k, n = 0;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
 	dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL);
 	if (!dump) {
-		dev_err(udc->dev, "%s: out of memory\n", __func__);
+		dev_err(ci->dev, "%s: out of memory\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	k = hw_register_read(udc, dump, DUMP_ENTRIES);
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	k = hw_register_read(ci, dump, DUMP_ENTRIES);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	for (i = 0; i < k; i++) {
 		n += scnprintf(buf + n, PAGE_SIZE - n,
@@ -660,24 +660,24 @@ static ssize_t store_registers(struct device *dev,
 			       struct device_attribute *attr,
 			       const char *buf, size_t count)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long addr, data, flags;
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		goto done;
 	}
 
 	if (sscanf(buf, "%li %li", &addr, &data) != 2) {
-		dev_err(udc->dev,
+		dev_err(ci->dev,
 			"<addr> <data>: write data to register address\n");
 		goto done;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (hw_register_write(udc, addr, data))
-		dev_err(udc->dev, "invalid address range\n");
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	if (hw_register_write(ci, addr, data))
+		dev_err(ci->dev, "invalid address range\n");
+	spin_unlock_irqrestore(&ci->lock, flags);
 
  done:
 	return count;
@@ -693,34 +693,34 @@ static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR,
 static ssize_t show_requests(struct device *dev, struct device_attribute *attr,
 			     char *buf)
 {
-	struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+	struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
 	unsigned long flags;
 	struct list_head   *ptr = NULL;
 	struct ci13xxx_req *req = NULL;
 	unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32);
 
 	if (attr == NULL || buf == NULL) {
-		dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+		dev_err(ci->dev, "[%s] EINVAL\n", __func__);
 		return 0;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	for (i = 0; i < udc->hw_ep_max; i++)
-		list_for_each(ptr, &udc->ci13xxx_ep[i].qh.queue)
+	spin_lock_irqsave(&ci->lock, flags);
+	for (i = 0; i < ci->hw_ep_max; i++)
+		list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue)
 		{
 			req = list_entry(ptr, struct ci13xxx_req, queue);
 
 			n += scnprintf(buf + n, PAGE_SIZE - n,
 					"EP=%02i: TD=%08X %s\n",
-					i % udc->hw_ep_max/2, (u32)req->dma,
-					((i < udc->hw_ep_max/2) ? "RX" : "TX"));
+					i % ci->hw_ep_max/2, (u32)req->dma,
+					((i < ci->hw_ep_max/2) ? "RX" : "TX"));
 
 			for (j = 0; j < qSize; j++)
 				n += scnprintf(buf + n, PAGE_SIZE - n,
 						" %04X:    %08X\n", j,
 						*((u32 *)req->ptr + j));
 		}
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return n;
 }
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 68584bb..ca9b387 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1,5 +1,5 @@
 /*
- * udc.c - ChipIdea UDC driver
+ * ci.c - ChipIdea UDC driver
  *
  * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
  *
@@ -66,11 +66,11 @@ static inline int hw_ep_bit(int num, int dir)
 	return num + (dir ? 16 : 0);
 }
 
-static inline int ep_to_bit(struct ci13xxx *udc, int n)
+static inline int ep_to_bit(struct ci13xxx *ci, int n)
 {
-	int fill = 16 - udc->hw_ep_max / 2;
+	int fill = 16 - ci->hw_ep_max / 2;
 
-	if (n >= udc->hw_ep_max / 2)
+	if (n >= ci->hw_ep_max / 2)
 		n += fill;
 
 	return n;
@@ -83,17 +83,17 @@ static inline int ep_to_bit(struct ci13xxx *udc, int n)
  *
  * This function returns an error code
  */
-static int hw_device_state(struct ci13xxx *udc, u32 dma)
+static int hw_device_state(struct ci13xxx *ci, u32 dma)
 {
 	if (dma) {
-		hw_write(udc, OP_ENDPTLISTADDR, ~0, dma);
+		hw_write(ci, OP_ENDPTLISTADDR, ~0, dma);
 		/* interrupt, error, port change, reset, sleep/suspend */
-		hw_write(udc, OP_USBINTR, ~0,
+		hw_write(ci, OP_USBINTR, ~0,
 			     USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
-		hw_write(udc, OP_USBCMD, USBCMD_RS, USBCMD_RS);
+		hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
 	} else {
-		hw_write(udc, OP_USBCMD, USBCMD_RS, 0);
-		hw_write(udc, OP_USBINTR, ~0, 0);
+		hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+		hw_write(ci, OP_USBINTR, ~0, 0);
 	}
 	return 0;
 }
@@ -105,16 +105,16 @@ static int hw_device_state(struct ci13xxx *udc, u32 dma)
  *
  * This function returns an error code
  */
-static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_flush(struct ci13xxx *ci, int num, int dir)
 {
 	int n = hw_ep_bit(num, dir);
 
 	do {
 		/* flush any pending transfer */
-		hw_write(udc, OP_ENDPTFLUSH, BIT(n), BIT(n));
-		while (hw_read(udc, OP_ENDPTFLUSH, BIT(n)))
+		hw_write(ci, OP_ENDPTFLUSH, BIT(n), BIT(n));
+		while (hw_read(ci, OP_ENDPTFLUSH, BIT(n)))
 			cpu_relax();
-	} while (hw_read(udc, OP_ENDPTSTAT, BIT(n)));
+	} while (hw_read(ci, OP_ENDPTSTAT, BIT(n)));
 
 	return 0;
 }
@@ -126,10 +126,10 @@ static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
  *
  * This function returns an error code
  */
-static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_disable(struct ci13xxx *ci, int num, int dir)
 {
-	hw_ep_flush(udc, num, dir);
-	hw_write(udc, OP_ENDPTCTRL + num,
+	hw_ep_flush(ci, num, dir);
+	hw_write(ci, OP_ENDPTCTRL + num,
 		 dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
 	return 0;
 }
@@ -142,7 +142,7 @@ static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
  *
  * This function returns an error code
  */
-static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
+static int hw_ep_enable(struct ci13xxx *ci, int num, int dir, int type)
 {
 	u32 mask, data;
 
@@ -165,7 +165,7 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
 		mask |= ENDPTCTRL_RXE;  /* enable  */
 		data |= ENDPTCTRL_RXE;
 	}
-	hw_write(udc, OP_ENDPTCTRL + num, mask, data);
+	hw_write(ci, OP_ENDPTCTRL + num, mask, data);
 	return 0;
 }
 
@@ -176,11 +176,11 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
  *
  * This function returns 1 if endpoint halted
  */
-static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_get_halt(struct ci13xxx *ci, int num, int dir)
 {
 	u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
 
-	return hw_read(udc, OP_ENDPTCTRL + num, mask) ? 1 : 0;
+	return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0;
 }
 
 /**
@@ -190,10 +190,10 @@ static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
  *
  * This function returns setup status
  */
-static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
+static int hw_test_and_clear_setup_status(struct ci13xxx *ci, int n)
 {
-	n = ep_to_bit(udc, n);
-	return hw_test_and_clear(udc, OP_ENDPTSETUPSTAT, BIT(n));
+	n = ep_to_bit(ci, n);
+	return hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(n));
 }
 
 /**
@@ -204,18 +204,18 @@ static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
  *
  * This function returns an error code
  */
-static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
+static int hw_ep_prime(struct ci13xxx *ci, int num, int dir, int is_ctrl)
 {
 	int n = hw_ep_bit(num, dir);
 
-	if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+	if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
 		return -EAGAIN;
 
-	hw_write(udc, OP_ENDPTPRIME, BIT(n), BIT(n));
+	hw_write(ci, OP_ENDPTPRIME, BIT(n), BIT(n));
 
-	while (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+	while (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
 		cpu_relax();
-	if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+	if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
 		return -EAGAIN;
 
 	/* status shoult be tested according with manual but it doesn't work */
@@ -231,7 +231,7 @@ static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
  *
  * This function returns an error code
  */
-static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
+static int hw_ep_set_halt(struct ci13xxx *ci, int num, int dir, int value)
 {
 	if (value != 0 && value != 1)
 		return -EINVAL;
@@ -242,9 +242,9 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
 		u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
 
 		/* data toggle - reserved for EP0 but it's in ESS */
-		hw_write(udc, reg, mask_xs|mask_xr,
+		hw_write(ci, reg, mask_xs|mask_xr,
 			  value ? mask_xs : mask_xr);
-	} while (value != hw_ep_get_halt(udc, num, dir));
+	} while (value != hw_ep_get_halt(ci, num, dir));
 
 	return 0;
 }
@@ -254,10 +254,10 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
  *
  * This function returns true if high speed port
  */
-static int hw_port_is_high_speed(struct ci13xxx *udc)
+static int hw_port_is_high_speed(struct ci13xxx *ci)
 {
-	return udc->hw_bank.lpm ? hw_read(udc, OP_DEVLC, DEVLC_PSPD) :
-		hw_read(udc, OP_PORTSC, PORTSC_HSP);
+	return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) :
+		hw_read(ci, OP_PORTSC, PORTSC_HSP);
 }
 
 /**
@@ -265,9 +265,9 @@ static int hw_port_is_high_speed(struct ci13xxx *udc)
  *
  * This function returns register data
  */
-static u32 hw_read_intr_enable(struct ci13xxx *udc)
+static u32 hw_read_intr_enable(struct ci13xxx *ci)
 {
-	return hw_read(udc, OP_USBINTR, ~0);
+	return hw_read(ci, OP_USBINTR, ~0);
 }
 
 /**
@@ -275,9 +275,9 @@ static u32 hw_read_intr_enable(struct ci13xxx *udc)
  *
  * This function returns register data
  */
-static u32 hw_read_intr_status(struct ci13xxx *udc)
+static u32 hw_read_intr_status(struct ci13xxx *ci)
 {
-	return hw_read(udc, OP_USBSTS, ~0);
+	return hw_read(ci, OP_USBSTS, ~0);
 }
 
 /**
@@ -287,10 +287,10 @@ static u32 hw_read_intr_status(struct ci13xxx *udc)
  *
  * This function returns complete status
  */
-static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
+static int hw_test_and_clear_complete(struct ci13xxx *ci, int n)
 {
-	n = ep_to_bit(udc, n);
-	return hw_test_and_clear(udc, OP_ENDPTCOMPLETE, BIT(n));
+	n = ep_to_bit(ci, n);
+	return hw_test_and_clear(ci, OP_ENDPTCOMPLETE, BIT(n));
 }
 
 /**
@@ -299,11 +299,11 @@ static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
  *
  * This function returns active interrutps
  */
-static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
+static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci)
 {
-	u32 reg = hw_read_intr_status(udc) & hw_read_intr_enable(udc);
+	u32 reg = hw_read_intr_status(ci) & hw_read_intr_enable(ci);
 
-	hw_write(udc, OP_USBSTS, ~0, reg);
+	hw_write(ci, OP_USBSTS, ~0, reg);
 	return reg;
 }
 
@@ -313,9 +313,9 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
  *
  * This function returns guard value
  */
-static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_clear_setup_guard(struct ci13xxx *ci)
 {
-	return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, 0);
+	return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, 0);
 }
 
 /**
@@ -324,9 +324,9 @@ static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
  *
  * This function returns guard value
  */
-static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_set_setup_guard(struct ci13xxx *ci)
 {
-	return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
+	return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
 }
 
 /**
@@ -336,9 +336,9 @@ static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
  * This function explicitly sets the address, without the "USBADRA" (advance)
  * feature, which is not supported by older versions of the controller.
  */
-static void hw_usb_set_address(struct ci13xxx *udc, u8 value)
+static void hw_usb_set_address(struct ci13xxx *ci, u8 value)
 {
-	hw_write(udc, OP_DEVICEADDR, DEVICEADDR_USBADR,
+	hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR,
 		 value << ffs_nr(DEVICEADDR_USBADR));
 }
 
@@ -348,21 +348,21 @@ static void hw_usb_set_address(struct ci13xxx *udc, u8 value)
  *
  * This function returns an error code
  */
-static int hw_usb_reset(struct ci13xxx *udc)
+static int hw_usb_reset(struct ci13xxx *ci)
 {
-	hw_usb_set_address(udc, 0);
+	hw_usb_set_address(ci, 0);
 
 	/* ESS flushes only@end?!? */
-	hw_write(udc, OP_ENDPTFLUSH,    ~0, ~0);
+	hw_write(ci, OP_ENDPTFLUSH,    ~0, ~0);
 
 	/* clear setup token semaphores */
-	hw_write(udc, OP_ENDPTSETUPSTAT, 0,  0);
+	hw_write(ci, OP_ENDPTSETUPSTAT, 0,  0);
 
 	/* clear complete status */
-	hw_write(udc, OP_ENDPTCOMPLETE,  0,  0);
+	hw_write(ci, OP_ENDPTCOMPLETE,  0,  0);
 
 	/* wait until all bits cleared */
-	while (hw_read(udc, OP_ENDPTPRIME, ~0))
+	while (hw_read(ci, OP_ENDPTPRIME, ~0))
 		udelay(10);             /* not RTOS friendly */
 
 	/* reset all endpoints ? */
@@ -394,7 +394,7 @@ static inline u8 _usb_addr(struct ci13xxx_ep *ep)
  */
 static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 {
-	struct ci13xxx *udc = mEp->udc;
+	struct ci13xxx *ci = mEp->ci;
 	unsigned i;
 	int ret = 0;
 	unsigned length = mReq->req.length;
@@ -417,7 +417,7 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 		if (!mReq->req.no_interrupt)
 			mReq->zptr->token   |= TD_IOC;
 	}
-	ret = usb_gadget_map_request(&udc->gadget, &mReq->req, mEp->dir);
+	ret = usb_gadget_map_request(&ci->gadget, &mReq->req, mEp->dir);
 	if (ret)
 		return ret;
 
@@ -453,13 +453,13 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 		else
 			mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK;
 		wmb();
-		if (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+		if (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
 			goto done;
 		do {
-			hw_write(udc, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
-			tmp_stat = hw_read(udc, OP_ENDPTSTAT, BIT(n));
-		} while (!hw_read(udc, OP_USBCMD, USBCMD_ATDTW));
-		hw_write(udc, OP_USBCMD, USBCMD_ATDTW, 0);
+			hw_write(ci, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
+			tmp_stat = hw_read(ci, OP_ENDPTSTAT, BIT(n));
+		} while (!hw_read(ci, OP_USBCMD, USBCMD_ATDTW));
+		hw_write(ci, OP_USBCMD, USBCMD_ATDTW, 0);
 		if (tmp_stat)
 			goto done;
 	}
@@ -471,7 +471,7 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 
 	wmb();   /* synchronize before ep prime */
 
-	ret = hw_ep_prime(udc, mEp->num, mEp->dir,
+	ret = hw_ep_prime(ci, mEp->num, mEp->dir,
 			   mEp->type == USB_ENDPOINT_XFER_CONTROL);
 done:
 	return ret;
@@ -501,7 +501,7 @@ static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 
 	mReq->req.status = 0;
 
-	usb_gadget_unmap_request(&mEp->udc->gadget, &mReq->req, mEp->dir);
+	usb_gadget_unmap_request(&mEp->ci->gadget, &mReq->req, mEp->dir);
 
 	mReq->req.status = mReq->ptr->token & TD_STATUS;
 	if ((TD_STATUS_HALTED & mReq->req.status) != 0)
@@ -533,7 +533,7 @@ __acquires(mEp->lock)
 	if (mEp == NULL)
 		return -EINVAL;
 
-	hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+	hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
 
 	while (!list_empty(&mEp->qh.queue)) {
 
@@ -562,33 +562,33 @@ __acquires(mEp->lock)
 static int _gadget_stop_activity(struct usb_gadget *gadget)
 {
 	struct usb_ep *ep;
-	struct ci13xxx    *udc = container_of(gadget, struct ci13xxx, gadget);
+	struct ci13xxx    *ci = container_of(gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 
-	spin_lock_irqsave(&udc->lock, flags);
-	udc->gadget.speed = USB_SPEED_UNKNOWN;
-	udc->remote_wakeup = 0;
-	udc->suspended = 0;
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	ci->gadget.speed = USB_SPEED_UNKNOWN;
+	ci->remote_wakeup = 0;
+	ci->suspended = 0;
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	/* flush all endpoints */
 	gadget_for_each_ep(ep, gadget) {
 		usb_ep_fifo_flush(ep);
 	}
-	usb_ep_fifo_flush(&udc->ep0out->ep);
-	usb_ep_fifo_flush(&udc->ep0in->ep);
+	usb_ep_fifo_flush(&ci->ep0out->ep);
+	usb_ep_fifo_flush(&ci->ep0in->ep);
 
-	if (udc->driver)
-		udc->driver->disconnect(gadget);
+	if (ci->driver)
+		ci->driver->disconnect(gadget);
 
 	/* make sure to disable all endpoints */
 	gadget_for_each_ep(ep, gadget) {
 		usb_ep_disable(ep);
 	}
 
-	if (udc->status != NULL) {
-		usb_ep_free_request(&udc->ep0in->ep, udc->status);
-		udc->status = NULL;
+	if (ci->status != NULL) {
+		usb_ep_free_request(&ci->ep0in->ep, ci->status);
+		ci->status = NULL;
 	}
 
 	return 0;
@@ -599,36 +599,36 @@ static int _gadget_stop_activity(struct usb_gadget *gadget)
  *****************************************************************************/
 /**
  * isr_reset_handler: USB reset interrupt handler
- * @udc: UDC device
+ * @ci: UDC device
  *
  * This function resets USB engine after a bus reset occurred
  */
-static void isr_reset_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_reset_handler(struct ci13xxx *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
 {
 	int retval;
 
 	dbg_event(0xFF, "BUS RST", 0);
 
-	spin_unlock(&udc->lock);
-	retval = _gadget_stop_activity(&udc->gadget);
+	spin_unlock(&ci->lock);
+	retval = _gadget_stop_activity(&ci->gadget);
 	if (retval)
 		goto done;
 
-	retval = hw_usb_reset(udc);
+	retval = hw_usb_reset(ci);
 	if (retval)
 		goto done;
 
-	udc->status = usb_ep_alloc_request(&udc->ep0in->ep, GFP_ATOMIC);
-	if (udc->status == NULL)
+	ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC);
+	if (ci->status == NULL)
 		retval = -ENOMEM;
 
 done:
-	spin_lock(&udc->lock);
+	spin_lock(&ci->lock);
 
 	if (retval)
-		dev_err(udc->dev, "error: %i\n", retval);
+		dev_err(ci->dev, "error: %i\n", retval);
 }
 
 /**
@@ -649,17 +649,17 @@ static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req)
 
 /**
  * isr_get_status_response: get_status request response
- * @udc: udc struct
+ * @ci: ci struct
  * @setup: setup request packet
  *
  * This function returns an error code
  */
-static int isr_get_status_response(struct ci13xxx *udc,
+static int isr_get_status_response(struct ci13xxx *ci,
 				   struct usb_ctrlrequest *setup)
 __releases(mEp->lock)
 __acquires(mEp->lock)
 {
-	struct ci13xxx_ep *mEp = udc->ep0in;
+	struct ci13xxx_ep *mEp = ci->ep0in;
 	struct usb_request *req = NULL;
 	gfp_t gfp_flags = GFP_ATOMIC;
 	int dir, num, retval;
@@ -683,14 +683,14 @@ __acquires(mEp->lock)
 
 	if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
 		/* Assume that device is bus powered for now. */
-		*(u16 *)req->buf = udc->remote_wakeup << 1;
+		*(u16 *)req->buf = ci->remote_wakeup << 1;
 		retval = 0;
 	} else if ((setup->bRequestType & USB_RECIP_MASK) \
 		   == USB_RECIP_ENDPOINT) {
 		dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ?
 			TX : RX;
 		num =  le16_to_cpu(setup->wIndex) & USB_ENDPOINT_NUMBER_MASK;
-		*(u16 *)req->buf = hw_ep_get_halt(udc, num, dir);
+		*(u16 *)req->buf = hw_ep_get_halt(ci, num, dir);
 	}
 	/* else do nothing; reserved for future use */
 
@@ -722,39 +722,39 @@ __acquires(mEp->lock)
 static void
 isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req)
 {
-	struct ci13xxx *udc = req->context;
+	struct ci13xxx *ci = req->context;
 	unsigned long flags;
 
-	if (udc->setaddr) {
-		hw_usb_set_address(udc, udc->address);
-		udc->setaddr = false;
+	if (ci->setaddr) {
+		hw_usb_set_address(ci, ci->address);
+		ci->setaddr = false;
 	}
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (udc->test_mode)
-		hw_port_test_set(udc, udc->test_mode);
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
+	if (ci->test_mode)
+		hw_port_test_set(ci, ci->test_mode);
+	spin_unlock_irqrestore(&ci->lock, flags);
 }
 
 /**
  * isr_setup_status_phase: queues the status phase of a setup transation
- * @udc: udc struct
+ * @ci: ci struct
  *
  * This function returns an error code
  */
-static int isr_setup_status_phase(struct ci13xxx *udc)
+static int isr_setup_status_phase(struct ci13xxx *ci)
 __releases(mEp->lock)
 __acquires(mEp->lock)
 {
 	int retval;
 	struct ci13xxx_ep *mEp;
 
-	mEp = (udc->ep0_dir == TX) ? udc->ep0out : udc->ep0in;
-	udc->status->context = udc;
-	udc->status->complete = isr_setup_status_complete;
+	mEp = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in;
+	ci->status->context = ci;
+	ci->status->complete = isr_setup_status_complete;
 
 	spin_unlock(mEp->lock);
-	retval = usb_ep_queue(&mEp->ep, udc->status, GFP_ATOMIC);
+	retval = usb_ep_queue(&mEp->ep, ci->status, GFP_ATOMIC);
 	spin_lock(mEp->lock);
 
 	return retval;
@@ -789,7 +789,7 @@ __acquires(mEp->lock)
 			spin_unlock(mEp->lock);
 			if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) &&
 					mReq->req.length)
-				mEpTemp = mEp->udc->ep0in;
+				mEpTemp = mEp->ci->ep0in;
 			mReq->req.complete(&mEpTemp->ep, &mReq->req);
 			spin_lock(mEp->lock);
 		}
@@ -805,48 +805,48 @@ __acquires(mEp->lock)
 
 /**
  * isr_tr_complete_handler: transaction complete interrupt handler
- * @udc: UDC descriptor
+ * @ci: UDC descriptor
  *
  * This function handles traffic events
  */
-static void isr_tr_complete_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_tr_complete_handler(struct ci13xxx *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
 {
 	unsigned i;
 	u8 tmode = 0;
 
-	for (i = 0; i < udc->hw_ep_max; i++) {
-		struct ci13xxx_ep *mEp  = &udc->ci13xxx_ep[i];
+	for (i = 0; i < ci->hw_ep_max; i++) {
+		struct ci13xxx_ep *mEp  = &ci->ci13xxx_ep[i];
 		int type, num, dir, err = -EINVAL;
 		struct usb_ctrlrequest req;
 
 		if (mEp->ep.desc == NULL)
 			continue;   /* not configured */
 
-		if (hw_test_and_clear_complete(udc, i)) {
+		if (hw_test_and_clear_complete(ci, i)) {
 			err = isr_tr_complete_low(mEp);
 			if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
 				if (err > 0)   /* needs status phase */
-					err = isr_setup_status_phase(udc);
+					err = isr_setup_status_phase(ci);
 				if (err < 0) {
 					dbg_event(_usb_addr(mEp),
 						  "ERROR", err);
-					spin_unlock(&udc->lock);
+					spin_unlock(&ci->lock);
 					if (usb_ep_set_halt(&mEp->ep))
-						dev_err(udc->dev,
+						dev_err(ci->dev,
 							"error: ep_set_halt\n");
-					spin_lock(&udc->lock);
+					spin_lock(&ci->lock);
 				}
 			}
 		}
 
 		if (mEp->type != USB_ENDPOINT_XFER_CONTROL ||
-		    !hw_test_and_clear_setup_status(udc, i))
+		    !hw_test_and_clear_setup_status(ci, i))
 			continue;
 
 		if (i != 0) {
-			dev_warn(udc->dev, "ctrl traffic at endpoint %d\n", i);
+			dev_warn(ci->dev, "ctrl traffic at endpoint %d\n", i);
 			continue;
 		}
 
@@ -854,18 +854,18 @@ __acquires(udc->lock)
 		 * Flush data and handshake transactions of previous
 		 * setup packet.
 		 */
-		_ep_nuke(udc->ep0out);
-		_ep_nuke(udc->ep0in);
+		_ep_nuke(ci->ep0out);
+		_ep_nuke(ci->ep0in);
 
 		/* read_setup_packet */
 		do {
-			hw_test_and_set_setup_guard(udc);
+			hw_test_and_set_setup_guard(ci);
 			memcpy(&req, &mEp->qh.ptr->setup, sizeof(req));
-		} while (!hw_test_and_clear_setup_guard(udc));
+		} while (!hw_test_and_clear_setup_guard(ci));
 
 		type = req.bRequestType;
 
-		udc->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
+		ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
 
 		dbg_setup(_usb_addr(mEp), &req);
 
@@ -880,23 +880,23 @@ __acquires(udc->lock)
 				dir = num & USB_ENDPOINT_DIR_MASK;
 				num &= USB_ENDPOINT_NUMBER_MASK;
 				if (dir) /* TX */
-					num += udc->hw_ep_max/2;
-				if (!udc->ci13xxx_ep[num].wedge) {
-					spin_unlock(&udc->lock);
+					num += ci->hw_ep_max/2;
+				if (!ci->ci13xxx_ep[num].wedge) {
+					spin_unlock(&ci->lock);
 					err = usb_ep_clear_halt(
-						&udc->ci13xxx_ep[num].ep);
-					spin_lock(&udc->lock);
+						&ci->ci13xxx_ep[num].ep);
+					spin_lock(&ci->lock);
 					if (err)
 						break;
 				}
-				err = isr_setup_status_phase(udc);
+				err = isr_setup_status_phase(ci);
 			} else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
 					le16_to_cpu(req.wValue) ==
 					USB_DEVICE_REMOTE_WAKEUP) {
 				if (req.wLength != 0)
 					break;
-				udc->remote_wakeup = 0;
-				err = isr_setup_status_phase(udc);
+				ci->remote_wakeup = 0;
+				err = isr_setup_status_phase(ci);
 			} else {
 				goto delegate;
 			}
@@ -909,7 +909,7 @@ __acquires(udc->lock)
 			if (le16_to_cpu(req.wLength) != 2 ||
 			    le16_to_cpu(req.wValue)  != 0)
 				break;
-			err = isr_get_status_response(udc, &req);
+			err = isr_get_status_response(ci, &req);
 			break;
 		case USB_REQ_SET_ADDRESS:
 			if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
@@ -917,9 +917,9 @@ __acquires(udc->lock)
 			if (le16_to_cpu(req.wLength) != 0 ||
 			    le16_to_cpu(req.wIndex)  != 0)
 				break;
-			udc->address = (u8)le16_to_cpu(req.wValue);
-			udc->setaddr = true;
-			err = isr_setup_status_phase(udc);
+			ci->address = (u8)le16_to_cpu(req.wValue);
+			ci->setaddr = true;
+			err = isr_setup_status_phase(ci);
 			break;
 		case USB_REQ_SET_FEATURE:
 			if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
@@ -931,20 +931,20 @@ __acquires(udc->lock)
 				dir = num & USB_ENDPOINT_DIR_MASK;
 				num &= USB_ENDPOINT_NUMBER_MASK;
 				if (dir) /* TX */
-					num += udc->hw_ep_max/2;
+					num += ci->hw_ep_max/2;
 
-				spin_unlock(&udc->lock);
-				err = usb_ep_set_halt(&udc->ci13xxx_ep[num].ep);
-				spin_lock(&udc->lock);
+				spin_unlock(&ci->lock);
+				err = usb_ep_set_halt(&ci->ci13xxx_ep[num].ep);
+				spin_lock(&ci->lock);
 				if (!err)
-					isr_setup_status_phase(udc);
+					isr_setup_status_phase(ci);
 			} else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
 				if (req.wLength != 0)
 					break;
 				switch (le16_to_cpu(req.wValue)) {
 				case USB_DEVICE_REMOTE_WAKEUP:
-					udc->remote_wakeup = 1;
-					err = isr_setup_status_phase(udc);
+					ci->remote_wakeup = 1;
+					err = isr_setup_status_phase(ci);
 					break;
 				case USB_DEVICE_TEST_MODE:
 					tmode = le16_to_cpu(req.wIndex) >> 8;
@@ -954,9 +954,9 @@ __acquires(udc->lock)
 					case TEST_SE0_NAK:
 					case TEST_PACKET:
 					case TEST_FORCE_EN:
-						udc->test_mode = tmode;
+						ci->test_mode = tmode;
 						err = isr_setup_status_phase(
-								udc);
+								ci);
 						break;
 					default:
 						break;
@@ -971,21 +971,21 @@ __acquires(udc->lock)
 		default:
 delegate:
 			if (req.wLength == 0)   /* no data phase */
-				udc->ep0_dir = TX;
+				ci->ep0_dir = TX;
 
-			spin_unlock(&udc->lock);
-			err = udc->driver->setup(&udc->gadget, &req);
-			spin_lock(&udc->lock);
+			spin_unlock(&ci->lock);
+			err = ci->driver->setup(&ci->gadget, &req);
+			spin_lock(&ci->lock);
 			break;
 		}
 
 		if (err < 0) {
 			dbg_event(_usb_addr(mEp), "ERROR", err);
 
-			spin_unlock(&udc->lock);
+			spin_unlock(&ci->lock);
 			if (usb_ep_set_halt(&mEp->ep))
-				dev_err(udc->dev, "error: ep_set_halt\n");
-			spin_lock(&udc->lock);
+				dev_err(ci->dev, "error: ep_set_halt\n");
+			spin_lock(&ci->lock);
 		}
 	}
 }
@@ -1015,7 +1015,7 @@ static int ep_enable(struct usb_ep *ep,
 	mEp->ep.desc = desc;
 
 	if (!list_empty(&mEp->qh.queue))
-		dev_warn(mEp->udc->dev, "enabling a non-empty endpoint!\n");
+		dev_warn(mEp->ci->dev, "enabling a non-empty endpoint!\n");
 
 	mEp->dir  = usb_endpoint_dir_in(desc) ? TX : RX;
 	mEp->num  = usb_endpoint_num(desc);
@@ -1043,7 +1043,7 @@ static int ep_enable(struct usb_ep *ep,
 	 * is always enabled
 	 */
 	if (mEp->num)
-		retval |= hw_ep_enable(mEp->udc, mEp->num, mEp->dir, mEp->type);
+		retval |= hw_ep_enable(mEp->ci, mEp->num, mEp->dir, mEp->type);
 
 	spin_unlock_irqrestore(mEp->lock, flags);
 	return retval;
@@ -1074,7 +1074,7 @@ static int ep_disable(struct usb_ep *ep)
 		dbg_event(_usb_addr(mEp), "DISABLE", 0);
 
 		retval |= _ep_nuke(mEp);
-		retval |= hw_ep_disable(mEp->udc, mEp->num, mEp->dir);
+		retval |= hw_ep_disable(mEp->ci, mEp->num, mEp->dir);
 
 		if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
 			mEp->dir = (mEp->dir == TX) ? RX : TX;
@@ -1131,7 +1131,7 @@ static void ep_free_request(struct usb_ep *ep, struct usb_request *req)
 	if (ep == NULL || req == NULL) {
 		return;
 	} else if (!list_empty(&mReq->queue)) {
-		dev_err(mEp->udc->dev, "freeing queued request\n");
+		dev_err(mEp->ci->dev, "freeing queued request\n");
 		return;
 	}
 
@@ -1156,7 +1156,7 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
 {
 	struct ci13xxx_ep  *mEp  = container_of(ep,  struct ci13xxx_ep, ep);
 	struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
-	struct ci13xxx *udc = mEp->udc;
+	struct ci13xxx *ci = mEp->ci;
 	int retval = 0;
 	unsigned long flags;
 
@@ -1167,12 +1167,12 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
 
 	if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
 		if (req->length)
-			mEp = (udc->ep0_dir == RX) ?
-			       udc->ep0out : udc->ep0in;
+			mEp = (ci->ep0_dir == RX) ?
+			       ci->ep0out : ci->ep0in;
 		if (!list_empty(&mEp->qh.queue)) {
 			_ep_nuke(mEp);
 			retval = -EOVERFLOW;
-			dev_warn(mEp->udc->dev, "endpoint ctrl %X nuked\n",
+			dev_warn(mEp->ci->dev, "endpoint ctrl %X nuked\n",
 				 _usb_addr(mEp));
 		}
 	}
@@ -1180,14 +1180,14 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
 	/* first nuke then test link, e.g. previous status has not sent */
 	if (!list_empty(&mReq->queue)) {
 		retval = -EBUSY;
-		dev_err(mEp->udc->dev, "request already in queue\n");
+		dev_err(mEp->ci->dev, "request already in queue\n");
 		goto done;
 	}
 
 	if (req->length > 4 * CI13XXX_PAGE_SIZE) {
 		req->length = 4 * CI13XXX_PAGE_SIZE;
 		retval = -EMSGSIZE;
-		dev_warn(mEp->udc->dev, "request length truncated\n");
+		dev_warn(mEp->ci->dev, "request length truncated\n");
 	}
 
 	dbg_queue(_usb_addr(mEp), req, retval);
@@ -1230,12 +1230,12 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
 
 	dbg_event(_usb_addr(mEp), "DEQUEUE", 0);
 
-	hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+	hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
 
 	/* pop request */
 	list_del_init(&mReq->queue);
 
-	usb_gadget_unmap_request(&mEp->udc->gadget, req, mEp->dir);
+	usb_gadget_unmap_request(&mEp->ci->gadget, req, mEp->dir);
 
 	req->status = -ECONNRESET;
 
@@ -1277,7 +1277,7 @@ static int ep_set_halt(struct usb_ep *ep, int value)
 	direction = mEp->dir;
 	do {
 		dbg_event(_usb_addr(mEp), "HALT", value);
-		retval |= hw_ep_set_halt(mEp->udc, mEp->num, mEp->dir, value);
+		retval |= hw_ep_set_halt(mEp->ci, mEp->num, mEp->dir, value);
 
 		if (!value)
 			mEp->wedge = 0;
@@ -1325,14 +1325,14 @@ static void ep_fifo_flush(struct usb_ep *ep)
 	unsigned long flags;
 
 	if (ep == NULL) {
-		dev_err(mEp->udc->dev, "%02X: -EINVAL\n", _usb_addr(mEp));
+		dev_err(mEp->ci->dev, "%02X: -EINVAL\n", _usb_addr(mEp));
 		return;
 	}
 
 	spin_lock_irqsave(mEp->lock, flags);
 
 	dbg_event(_usb_addr(mEp), "FFLUSH", 0);
-	hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+	hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
 
 	spin_unlock_irqrestore(mEp->lock, flags);
 }
@@ -1358,30 +1358,30 @@ static const struct usb_ep_ops usb_ep_ops = {
  *****************************************************************************/
 static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 {
-	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 	int gadget_ready = 0;
 
-	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
+	if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
 		return -EOPNOTSUPP;
 
-	spin_lock_irqsave(&udc->lock, flags);
-	udc->vbus_active = is_active;
-	if (udc->driver)
+	spin_lock_irqsave(&ci->lock, flags);
+	ci->vbus_active = is_active;
+	if (ci->driver)
 		gadget_ready = 1;
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	if (gadget_ready) {
 		if (is_active) {
 			pm_runtime_get_sync(&_gadget->dev);
-			hw_device_reset(udc, USBMODE_CM_DC);
-			hw_device_state(udc, udc->ep0out->qh.dma);
+			hw_device_reset(ci, USBMODE_CM_DC);
+			hw_device_state(ci, ci->ep0out->qh.dma);
 		} else {
-			hw_device_state(udc, 0);
-			if (udc->platdata->notify_event)
-				udc->platdata->notify_event(udc,
+			hw_device_state(ci, 0);
+			if (ci->platdata->notify_event)
+				ci->platdata->notify_event(ci,
 				CI13XXX_CONTROLLER_STOPPED_EVENT);
-			_gadget_stop_activity(&udc->gadget);
+			_gadget_stop_activity(&ci->gadget);
 			pm_runtime_put_sync(&_gadget->dev);
 		}
 	}
@@ -1391,31 +1391,31 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
 
 static int ci13xxx_wakeup(struct usb_gadget *_gadget)
 {
-	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 	int ret = 0;
 
-	spin_lock_irqsave(&udc->lock, flags);
-	if (!udc->remote_wakeup) {
+	spin_lock_irqsave(&ci->lock, flags);
+	if (!ci->remote_wakeup) {
 		ret = -EOPNOTSUPP;
 		goto out;
 	}
-	if (!hw_read(udc, OP_PORTSC, PORTSC_SUSP)) {
+	if (!hw_read(ci, OP_PORTSC, PORTSC_SUSP)) {
 		ret = -EINVAL;
 		goto out;
 	}
-	hw_write(udc, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
+	hw_write(ci, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
 out:
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 	return ret;
 }
 
 static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
 {
-	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
 
-	if (udc->transceiver)
-		return usb_phy_set_power(udc->transceiver, mA);
+	if (ci->transceiver)
+		return usb_phy_set_power(ci->transceiver, mA);
 	return -ENOTSUPP;
 }
 
@@ -1436,28 +1436,28 @@ static const struct usb_gadget_ops usb_gadget_ops = {
 	.udc_stop	= ci13xxx_stop,
 };
 
-static int init_eps(struct ci13xxx *udc)
+static int init_eps(struct ci13xxx *ci)
 {
 	int retval = 0, i, j;
 
-	for (i = 0; i < udc->hw_ep_max/2; i++)
+	for (i = 0; i < ci->hw_ep_max/2; i++)
 		for (j = RX; j <= TX; j++) {
-			int k = i + j * udc->hw_ep_max/2;
-			struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[k];
+			int k = i + j * ci->hw_ep_max/2;
+			struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[k];
 
 			scnprintf(mEp->name, sizeof(mEp->name), "ep%i%s", i,
 					(j == TX)  ? "in" : "out");
 
-			mEp->udc          = udc;
-			mEp->lock         = &udc->lock;
-			mEp->td_pool      = udc->td_pool;
+			mEp->ci          = ci;
+			mEp->lock         = &ci->lock;
+			mEp->td_pool      = ci->td_pool;
 
 			mEp->ep.name      = mEp->name;
 			mEp->ep.ops       = &usb_ep_ops;
 			mEp->ep.maxpacket = CTRL_PAYLOAD_MAX;
 
 			INIT_LIST_HEAD(&mEp->qh.queue);
-			mEp->qh.ptr = dma_pool_alloc(udc->qh_pool, GFP_KERNEL,
+			mEp->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
 						     &mEp->qh.dma);
 			if (mEp->qh.ptr == NULL)
 				retval = -ENOMEM;
@@ -1470,14 +1470,14 @@ static int init_eps(struct ci13xxx *udc)
 			 */
 			if (i == 0) {
 				if (j == RX)
-					udc->ep0out = mEp;
+					ci->ep0out = mEp;
 				else
-					udc->ep0in = mEp;
+					ci->ep0in = mEp;
 
 				continue;
 			}
 
-			list_add_tail(&mEp->ep.ep_list, &udc->gadget.ep_list);
+			list_add_tail(&mEp->ep.ep_list, &ci->gadget.ep_list);
 		}
 
 	return retval;
@@ -1493,7 +1493,7 @@ static int init_eps(struct ci13xxx *udc)
 static int ci13xxx_start(struct usb_gadget *gadget,
 			 struct usb_gadget_driver *driver)
 {
-	struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 	int retval = -ENOMEM;
 
@@ -1501,35 +1501,35 @@ static int ci13xxx_start(struct usb_gadget *gadget,
 		return -EINVAL;
 
 
-	udc->ep0out->ep.desc = &ctrl_endpt_out_desc;
-	retval = usb_ep_enable(&udc->ep0out->ep);
+	ci->ep0out->ep.desc = &ctrl_endpt_out_desc;
+	retval = usb_ep_enable(&ci->ep0out->ep);
 	if (retval)
 		return retval;
 
-	udc->ep0in->ep.desc = &ctrl_endpt_in_desc;
-	retval = usb_ep_enable(&udc->ep0in->ep);
+	ci->ep0in->ep.desc = &ctrl_endpt_in_desc;
+	retval = usb_ep_enable(&ci->ep0in->ep);
 	if (retval)
 		return retval;
-	spin_lock_irqsave(&udc->lock, flags);
-
-	udc->driver = driver;
-	pm_runtime_get_sync(&udc->gadget.dev);
-	if (udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
-		if (udc->vbus_active) {
-			if (udc->platdata->flags & CI13XXX_REGS_SHARED)
-				hw_device_reset(udc, USBMODE_CM_DC);
+	spin_lock_irqsave(&ci->lock, flags);
+
+	ci->driver = driver;
+	pm_runtime_get_sync(&ci->gadget.dev);
+	if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
+		if (ci->vbus_active) {
+			if (ci->platdata->flags & CI13XXX_REGS_SHARED)
+				hw_device_reset(ci, USBMODE_CM_DC);
 		} else {
-			pm_runtime_put_sync(&udc->gadget.dev);
+			pm_runtime_put_sync(&ci->gadget.dev);
 			goto done;
 		}
 	}
 
-	retval = hw_device_state(udc, udc->ep0out->qh.dma);
+	retval = hw_device_state(ci, ci->ep0out->qh.dma);
 	if (retval)
-		pm_runtime_put_sync(&udc->gadget.dev);
+		pm_runtime_put_sync(&ci->gadget.dev);
 
  done:
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 	return retval;
 }
 
@@ -1539,25 +1539,25 @@ static int ci13xxx_start(struct usb_gadget *gadget,
 static int ci13xxx_stop(struct usb_gadget *gadget,
 			struct usb_gadget_driver *driver)
 {
-	struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+	struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget);
 	unsigned long flags;
 
-	spin_lock_irqsave(&udc->lock, flags);
+	spin_lock_irqsave(&ci->lock, flags);
 
-	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
-			udc->vbus_active) {
-		hw_device_state(udc, 0);
-		if (udc->platdata->notify_event)
-			udc->platdata->notify_event(udc,
+	if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
+			ci->vbus_active) {
+		hw_device_state(ci, 0);
+		if (ci->platdata->notify_event)
+			ci->platdata->notify_event(ci,
 			CI13XXX_CONTROLLER_STOPPED_EVENT);
-		udc->driver = NULL;
-		spin_unlock_irqrestore(&udc->lock, flags);
-		_gadget_stop_activity(&udc->gadget);
-		spin_lock_irqsave(&udc->lock, flags);
-		pm_runtime_put(&udc->gadget.dev);
+		ci->driver = NULL;
+		spin_unlock_irqrestore(&ci->lock, flags);
+		_gadget_stop_activity(&ci->gadget);
+		spin_lock_irqsave(&ci->lock, flags);
+		pm_runtime_put(&ci->gadget.dev);
 	}
 
-	spin_unlock_irqrestore(&udc->lock, flags);
+	spin_unlock_irqrestore(&ci->lock, flags);
 
 	return 0;
 }
@@ -1566,64 +1566,64 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
  * BUS block
  *****************************************************************************/
 /**
- * udc_irq: udc interrupt handler
+ * udc_irq: ci interrupt handler
  *
  * This function returns IRQ_HANDLED if the IRQ has been handled
  * It locks access to registers
  */
-static irqreturn_t udc_irq(struct ci13xxx *udc)
+static irqreturn_t udc_irq(struct ci13xxx *ci)
 {
 	irqreturn_t retval;
 	u32 intr;
 
-	if (udc == NULL)
+	if (ci == NULL)
 		return IRQ_HANDLED;
 
-	spin_lock(&udc->lock);
+	spin_lock(&ci->lock);
 
-	if (udc->platdata->flags & CI13XXX_REGS_SHARED) {
-		if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
+	if (ci->platdata->flags & CI13XXX_REGS_SHARED) {
+		if (hw_read(ci, OP_USBMODE, USBMODE_CM) !=
 				USBMODE_CM_DC) {
-			spin_unlock(&udc->lock);
+			spin_unlock(&ci->lock);
 			return IRQ_NONE;
 		}
 	}
-	intr = hw_test_and_clear_intr_active(udc);
+	intr = hw_test_and_clear_intr_active(ci);
 	dbg_interrupt(intr);
 
 	if (intr) {
 		/* order defines priority - do NOT change it */
 		if (USBi_URI & intr)
-			isr_reset_handler(udc);
+			isr_reset_handler(ci);
 
 		if (USBi_PCI & intr) {
-			udc->gadget.speed = hw_port_is_high_speed(udc) ?
+			ci->gadget.speed = hw_port_is_high_speed(ci) ?
 				USB_SPEED_HIGH : USB_SPEED_FULL;
-			if (udc->suspended && udc->driver->resume) {
-				spin_unlock(&udc->lock);
-				udc->driver->resume(&udc->gadget);
-				spin_lock(&udc->lock);
-				udc->suspended = 0;
+			if (ci->suspended && ci->driver->resume) {
+				spin_unlock(&ci->lock);
+				ci->driver->resume(&ci->gadget);
+				spin_lock(&ci->lock);
+				ci->suspended = 0;
 			}
 		}
 
 		if (USBi_UI  & intr)
-			isr_tr_complete_handler(udc);
+			isr_tr_complete_handler(ci);
 
 		if (USBi_SLI & intr) {
-			if (udc->gadget.speed != USB_SPEED_UNKNOWN &&
-			    udc->driver->suspend) {
-				udc->suspended = 1;
-				spin_unlock(&udc->lock);
-				udc->driver->suspend(&udc->gadget);
-				spin_lock(&udc->lock);
+			if (ci->gadget.speed != USB_SPEED_UNKNOWN &&
+			    ci->driver->suspend) {
+				ci->suspended = 1;
+				spin_unlock(&ci->lock);
+				ci->driver->suspend(&ci->gadget);
+				spin_lock(&ci->lock);
 			}
 		}
 		retval = IRQ_HANDLED;
 	} else {
 		retval = IRQ_NONE;
 	}
-	spin_unlock(&udc->lock);
+	spin_unlock(&ci->lock);
 
 	return retval;
 }
@@ -1640,109 +1640,109 @@ static void udc_release(struct device *dev)
 
 /**
  * udc_start: initialize gadget role
- * @udc: chipidea controller
+ * @ci: chipidea controller
  */
-static int udc_start(struct ci13xxx *udc)
+static int udc_start(struct ci13xxx *ci)
 {
-	struct device *dev = udc->dev;
+	struct device *dev = ci->dev;
 	int retval = 0;
 
-	spin_lock_init(&udc->lock);
+	spin_lock_init(&ci->lock);
 
-	udc->gadget.ops          = &usb_gadget_ops;
-	udc->gadget.speed        = USB_SPEED_UNKNOWN;
-	udc->gadget.max_speed    = USB_SPEED_HIGH;
-	udc->gadget.is_otg       = 0;
-	udc->gadget.name         = udc->platdata->name;
+	ci->gadget.ops          = &usb_gadget_ops;
+	ci->gadget.speed        = USB_SPEED_UNKNOWN;
+	ci->gadget.max_speed    = USB_SPEED_HIGH;
+	ci->gadget.is_otg       = 0;
+	ci->gadget.name         = ci->platdata->name;
 
-	INIT_LIST_HEAD(&udc->gadget.ep_list);
+	INIT_LIST_HEAD(&ci->gadget.ep_list);
 
-	dev_set_name(&udc->gadget.dev, "gadget");
-	udc->gadget.dev.dma_mask = dev->dma_mask;
-	udc->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask;
-	udc->gadget.dev.parent   = dev;
-	udc->gadget.dev.release  = udc_release;
+	dev_set_name(&ci->gadget.dev, "gadget");
+	ci->gadget.dev.dma_mask = dev->dma_mask;
+	ci->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask;
+	ci->gadget.dev.parent   = dev;
+	ci->gadget.dev.release  = udc_release;
 
 	/* alloc resources */
-	udc->qh_pool = dma_pool_create("ci13xxx_qh", dev,
+	ci->qh_pool = dma_pool_create("ci13xxx_qh", dev,
 				       sizeof(struct ci13xxx_qh),
 				       64, CI13XXX_PAGE_SIZE);
-	if (udc->qh_pool == NULL)
+	if (ci->qh_pool == NULL)
 		return -ENOMEM;
 
-	udc->td_pool = dma_pool_create("ci13xxx_td", dev,
+	ci->td_pool = dma_pool_create("ci13xxx_td", dev,
 				       sizeof(struct ci13xxx_td),
 				       64, CI13XXX_PAGE_SIZE);
-	if (udc->td_pool == NULL) {
+	if (ci->td_pool == NULL) {
 		retval = -ENOMEM;
 		goto free_qh_pool;
 	}
 
-	retval = init_eps(udc);
+	retval = init_eps(ci);
 	if (retval)
 		goto free_pools;
 
-	udc->gadget.ep0 = &udc->ep0in->ep;
+	ci->gadget.ep0 = &ci->ep0in->ep;
 
-	udc->transceiver = usb_get_transceiver();
+	ci->transceiver = usb_get_transceiver();
 
-	if (udc->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
-		if (udc->transceiver == NULL) {
+	if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
+		if (ci->transceiver == NULL) {
 			retval = -ENODEV;
 			goto free_pools;
 		}
 	}
 
-	if (!(udc->platdata->flags & CI13XXX_REGS_SHARED)) {
-		retval = hw_device_reset(udc, USBMODE_CM_DC);
+	if (!(ci->platdata->flags & CI13XXX_REGS_SHARED)) {
+		retval = hw_device_reset(ci, USBMODE_CM_DC);
 		if (retval)
 			goto put_transceiver;
 	}
 
-	retval = device_register(&udc->gadget.dev);
+	retval = device_register(&ci->gadget.dev);
 	if (retval) {
-		put_device(&udc->gadget.dev);
+		put_device(&ci->gadget.dev);
 		goto put_transceiver;
 	}
 
-	retval = dbg_create_files(&udc->gadget.dev);
+	retval = dbg_create_files(&ci->gadget.dev);
 	if (retval)
 		goto unreg_device;
 
-	if (udc->transceiver) {
-		retval = otg_set_peripheral(udc->transceiver->otg,
-						&udc->gadget);
+	if (ci->transceiver) {
+		retval = otg_set_peripheral(ci->transceiver->otg,
+						&ci->gadget);
 		if (retval)
 			goto remove_dbg;
 	}
 
-	retval = usb_add_gadget_udc(dev, &udc->gadget);
+	retval = usb_add_gadget_udc(dev, &ci->gadget);
 	if (retval)
 		goto remove_trans;
 
-	pm_runtime_no_callbacks(&udc->gadget.dev);
-	pm_runtime_enable(&udc->gadget.dev);
+	pm_runtime_no_callbacks(&ci->gadget.dev);
+	pm_runtime_enable(&ci->gadget.dev);
 
 	return retval;
 
 remove_trans:
-	if (udc->transceiver) {
-		otg_set_peripheral(udc->transceiver->otg, &udc->gadget);
-		usb_put_transceiver(udc->transceiver);
+	if (ci->transceiver) {
+		otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
+		usb_put_transceiver(ci->transceiver);
 	}
 
 	dev_err(dev, "error = %i\n", retval);
 remove_dbg:
-	dbg_remove_files(&udc->gadget.dev);
+	dbg_remove_files(&ci->gadget.dev);
 unreg_device:
-	device_unregister(&udc->gadget.dev);
+	device_unregister(&ci->gadget.dev);
 put_transceiver:
-	if (udc->transceiver)
-		usb_put_transceiver(udc->transceiver);
+	if (ci->transceiver)
+		usb_put_transceiver(ci->transceiver);
 free_pools:
-	dma_pool_destroy(udc->td_pool);
+	dma_pool_destroy(ci->td_pool);
 free_qh_pool:
-	dma_pool_destroy(udc->qh_pool);
+	dma_pool_destroy(ci->qh_pool);
 	return retval;
 }
 
@@ -1751,32 +1751,32 @@ free_qh_pool:
  *
  * No interrupts active, the IRQ has been released
  */
-static void udc_stop(struct ci13xxx *udc)
+static void udc_stop(struct ci13xxx *ci)
 {
 	int i;
 
-	if (udc == NULL)
+	if (ci == NULL)
 		return;
 
-	usb_del_gadget_udc(&udc->gadget);
+	usb_del_gadget_udc(&ci->gadget);
 
-	for (i = 0; i < udc->hw_ep_max; i++) {
-		struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+	for (i = 0; i < ci->hw_ep_max; i++) {
+		struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i];
 
-		dma_pool_free(udc->qh_pool, mEp->qh.ptr, mEp->qh.dma);
+		dma_pool_free(ci->qh_pool, mEp->qh.ptr, mEp->qh.dma);
 	}
 
-	dma_pool_destroy(udc->td_pool);
-	dma_pool_destroy(udc->qh_pool);
+	dma_pool_destroy(ci->td_pool);
+	dma_pool_destroy(ci->qh_pool);
 
-	if (udc->transceiver) {
-		otg_set_peripheral(udc->transceiver->otg, NULL);
-		usb_put_transceiver(udc->transceiver);
+	if (ci->transceiver) {
+		otg_set_peripheral(ci->transceiver->otg, NULL);
+		usb_put_transceiver(ci->transceiver);
 	}
-	dbg_remove_files(&udc->gadget.dev);
-	device_unregister(&udc->gadget.dev);
+	dbg_remove_files(&ci->gadget.dev);
+	device_unregister(&ci->gadget.dev);
 	/* my kobject is dynamic, I swear! */
-	memset(&udc->gadget, 0, sizeof(udc->gadget));
+	memset(&ci->gadget, 0, sizeof(ci->gadget));
 }
 
 /**
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index d4cf9706..d2f7e49 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -19,7 +19,7 @@ struct ci13xxx_platform_data {
 
 #define CI13XXX_CONTROLLER_RESET_EVENT		0
 #define CI13XXX_CONTROLLER_STOPPED_EVENT	1
-	void	(*notify_event) (struct ci13xxx *udc, unsigned event);
+	void	(*notify_event) (struct ci13xxx *ci, unsigned event);
 };
 
 /* Default offset of capability registers */
-- 
1.7.9.5

[PATCH v7 07/14] USB: Chipidea: add unified ci13xxx_{add,remove}_device for platform drivers

[Richard Zhao]

Platform drivers do the similar things to add/remove ci13xxx device, so
create a unified one.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/ci13xxx_msm.c |   34 ++++++----------------------
 drivers/usb/chipidea/ci13xxx_pci.c |   34 +++++-----------------------
 drivers/usb/chipidea/core.c        |   43 ++++++++++++++++++++++++++++++++++++
 include/linux/usb/chipidea.h       |    7 ++++++
 4 files changed, 63 insertions(+), 55 deletions(-)

diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index a7dd9f1..92bfe36 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -58,50 +58,30 @@ static struct ci13xxx_platform_data ci13xxx_msm_platdata = {
 static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 {
 	struct platform_device *plat_ci;
-	int ret;
 
 	dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
 
-	plat_ci = platform_device_alloc("ci_hdrc", -1);
-	if (!plat_ci) {
-		dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
-		return -ENOMEM;
+	plat_ci = ci13xxx_add_device(&pdev->dev,
+				pdev->resource, pdev->num_resources,
+				&ci13xxx_msm_platdata);
+	if (IS_ERR(plat_ci)) {
+		dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
+		return PTR_ERR(plat_ci);
 	}
 
-	ret = platform_device_add_resources(plat_ci, pdev->resource,
-					    pdev->num_resources);
-	if (ret) {
-		dev_err(&pdev->dev, "can't add resources to platform device\n");
-		goto put_platform;
-	}
-
-	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_platdata,
-				       sizeof(ci13xxx_msm_platdata));
-	if (ret)
-		goto put_platform;
-
-	ret = platform_device_add(plat_ci);
-	if (ret)
-		goto put_platform;
-
 	platform_set_drvdata(pdev, plat_ci);
 
 	pm_runtime_no_callbacks(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
 	return 0;
-
-put_platform:
-	platform_device_put(plat_ci);
-
-	return ret;
 }
 
 static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
 {
 	struct platform_device *plat_ci = platform_get_drvdata(pdev);
 
-	platform_device_unregister(plat_ci);
+	ci13xxx_remove_device(plat_ci);
 
 	return 0;
 }
diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c
index cdcac3a..918e149 100644
--- a/drivers/usb/chipidea/ci13xxx_pci.c
+++ b/drivers/usb/chipidea/ci13xxx_pci.c
@@ -75,13 +75,6 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
-	plat_ci = platform_device_alloc("ci_hdrc", -1);
-	if (!plat_ci) {
-		dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
-		retval = -ENOMEM;
-		goto disable_device;
-	}
-
 	memset(res, 0, sizeof(res));
 	res[0].start	= pci_resource_start(pdev, 0);
 	res[0].end	= pci_resource_end(pdev, 0);
@@ -89,32 +82,17 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 	res[1].start	= pdev->irq;
 	res[1].flags	= IORESOURCE_IRQ;
 
-	retval = platform_device_add_resources(plat_ci, res, nres);
-	if (retval) {
-		dev_err(&pdev->dev, "can't add resources to platform device\n");
-		goto put_platform;
+	plat_ci = ci13xxx_add_device(&pdev->dev, res, nres, platdata);
+	if (IS_ERR(plat_ci)) {
+		dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
+		retval = PTR_ERR(plat_ci);
+		goto disable_device;
 	}
 
-	retval = platform_device_add_data(plat_ci, platdata, sizeof(*platdata));
-	if (retval)
-		goto put_platform;
-
-	dma_set_coherent_mask(&plat_ci->dev, pdev->dev.coherent_dma_mask);
-	plat_ci->dev.dma_mask = pdev->dev.dma_mask;
-	plat_ci->dev.dma_parms = pdev->dev.dma_parms;
-	plat_ci->dev.parent = &pdev->dev;
-
 	pci_set_drvdata(pdev, plat_ci);
 
-	retval = platform_device_add(plat_ci);
-	if (retval)
-		goto put_platform;
-
 	return 0;
 
- put_platform:
-	pci_set_drvdata(pdev, NULL);
-	platform_device_put(plat_ci);
  disable_device:
 	pci_disable_device(pdev);
  done:
@@ -133,7 +111,7 @@ static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev)
 {
 	struct platform_device *plat_ci = pci_get_drvdata(pdev);
 
-	platform_device_unregister(plat_ci);
+	ci13xxx_remove_device(plat_ci);
 	pci_set_drvdata(pdev, NULL);
 	pci_disable_device(pdev);
 }
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 9a883bd..8b9d06f 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -332,6 +332,49 @@ static irqreturn_t ci_irq(int irq, void *data)
 	return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci);
 }
 
+struct platform_device *ci13xxx_add_device(struct device *dev,
+			struct resource *res, int nres,
+			struct ci13xxx_platform_data *platdata)
+{
+	struct platform_device *pdev;
+	int ret;
+
+	/* FIXME: find a way to choose id */
+	pdev = platform_device_alloc("ci_hdrc", -1);
+	if (!pdev)
+		return ERR_PTR(-ENOMEM);
+
+	pdev->dev.parent = dev;
+	pdev->dev.dma_mask = dev->dma_mask;
+	pdev->dev.dma_parms = dev->dma_parms;
+	dma_set_coherent_mask(&pdev->dev, dev->coherent_dma_mask);
+
+	ret = platform_device_add_resources(pdev, res, nres);
+	if (ret)
+		goto err;
+
+	ret = platform_device_add_data(pdev, platdata, sizeof(*platdata));
+	if (ret)
+		goto err;
+
+	ret = platform_device_add(pdev);
+	if (ret)
+		goto err;
+
+	return pdev;
+
+err:
+	platform_device_put(pdev);
+	return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(ci13xxx_add_device);
+
+void ci13xxx_remove_device(struct platform_device *pdev)
+{
+	platform_device_unregister(pdev);
+}
+EXPORT_SYMBOL_GPL(ci13xxx_remove_device);
+
 static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 {
 	struct device	*dev = &pdev->dev;
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index d2f7e49..be078f0 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -25,4 +25,11 @@ struct ci13xxx_platform_data {
 /* Default offset of capability registers */
 #define DEF_CAPOFFSET		0x100
 
+/* Add ci13xxx device */
+struct platform_device *ci13xxx_add_device(struct device *dev,
+			struct resource *res, int nres,
+			struct ci13xxx_platform_data *platdata);
+/* Remove ci13xxx device */
+void ci13xxx_remove_device(struct platform_device *pdev);
+
 #endif
-- 
1.7.9.5


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[PATCH v7 07/14] USB: Chipidea: add unified ci13xxx_{add, remove}_device for platform drivers

[Richard Zhao]

Platform drivers do the similar things to add/remove ci13xxx device, so
create a unified one.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/ci13xxx_msm.c |   34 ++++++----------------------
 drivers/usb/chipidea/ci13xxx_pci.c |   34 +++++-----------------------
 drivers/usb/chipidea/core.c        |   43 ++++++++++++++++++++++++++++++++++++
 include/linux/usb/chipidea.h       |    7 ++++++
 4 files changed, 63 insertions(+), 55 deletions(-)

diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index a7dd9f1..92bfe36 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -58,50 +58,30 @@ static struct ci13xxx_platform_data ci13xxx_msm_platdata = {
 static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
 {
 	struct platform_device *plat_ci;
-	int ret;
 
 	dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
 
-	plat_ci = platform_device_alloc("ci_hdrc", -1);
-	if (!plat_ci) {
-		dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
-		return -ENOMEM;
+	plat_ci = ci13xxx_add_device(&pdev->dev,
+				pdev->resource, pdev->num_resources,
+				&ci13xxx_msm_platdata);
+	if (IS_ERR(plat_ci)) {
+		dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
+		return PTR_ERR(plat_ci);
 	}
 
-	ret = platform_device_add_resources(plat_ci, pdev->resource,
-					    pdev->num_resources);
-	if (ret) {
-		dev_err(&pdev->dev, "can't add resources to platform device\n");
-		goto put_platform;
-	}
-
-	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_platdata,
-				       sizeof(ci13xxx_msm_platdata));
-	if (ret)
-		goto put_platform;
-
-	ret = platform_device_add(plat_ci);
-	if (ret)
-		goto put_platform;
-
 	platform_set_drvdata(pdev, plat_ci);
 
 	pm_runtime_no_callbacks(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
 	return 0;
-
-put_platform:
-	platform_device_put(plat_ci);
-
-	return ret;
 }
 
 static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
 {
 	struct platform_device *plat_ci = platform_get_drvdata(pdev);
 
-	platform_device_unregister(plat_ci);
+	ci13xxx_remove_device(plat_ci);
 
 	return 0;
 }
diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c
index cdcac3a..918e149 100644
--- a/drivers/usb/chipidea/ci13xxx_pci.c
+++ b/drivers/usb/chipidea/ci13xxx_pci.c
@@ -75,13 +75,6 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
-	plat_ci = platform_device_alloc("ci_hdrc", -1);
-	if (!plat_ci) {
-		dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
-		retval = -ENOMEM;
-		goto disable_device;
-	}
-
 	memset(res, 0, sizeof(res));
 	res[0].start	= pci_resource_start(pdev, 0);
 	res[0].end	= pci_resource_end(pdev, 0);
@@ -89,32 +82,17 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
 	res[1].start	= pdev->irq;
 	res[1].flags	= IORESOURCE_IRQ;
 
-	retval = platform_device_add_resources(plat_ci, res, nres);
-	if (retval) {
-		dev_err(&pdev->dev, "can't add resources to platform device\n");
-		goto put_platform;
+	plat_ci = ci13xxx_add_device(&pdev->dev, res, nres, platdata);
+	if (IS_ERR(plat_ci)) {
+		dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
+		retval = PTR_ERR(plat_ci);
+		goto disable_device;
 	}
 
-	retval = platform_device_add_data(plat_ci, platdata, sizeof(*platdata));
-	if (retval)
-		goto put_platform;
-
-	dma_set_coherent_mask(&plat_ci->dev, pdev->dev.coherent_dma_mask);
-	plat_ci->dev.dma_mask = pdev->dev.dma_mask;
-	plat_ci->dev.dma_parms = pdev->dev.dma_parms;
-	plat_ci->dev.parent = &pdev->dev;
-
 	pci_set_drvdata(pdev, plat_ci);
 
-	retval = platform_device_add(plat_ci);
-	if (retval)
-		goto put_platform;
-
 	return 0;
 
- put_platform:
-	pci_set_drvdata(pdev, NULL);
-	platform_device_put(plat_ci);
  disable_device:
 	pci_disable_device(pdev);
  done:
@@ -133,7 +111,7 @@ static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev)
 {
 	struct platform_device *plat_ci = pci_get_drvdata(pdev);
 
-	platform_device_unregister(plat_ci);
+	ci13xxx_remove_device(plat_ci);
 	pci_set_drvdata(pdev, NULL);
 	pci_disable_device(pdev);
 }
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 9a883bd..8b9d06f 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -332,6 +332,49 @@ static irqreturn_t ci_irq(int irq, void *data)
 	return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci);
 }
 
+struct platform_device *ci13xxx_add_device(struct device *dev,
+			struct resource *res, int nres,
+			struct ci13xxx_platform_data *platdata)
+{
+	struct platform_device *pdev;
+	int ret;
+
+	/* FIXME: find a way to choose id */
+	pdev = platform_device_alloc("ci_hdrc", -1);
+	if (!pdev)
+		return ERR_PTR(-ENOMEM);
+
+	pdev->dev.parent = dev;
+	pdev->dev.dma_mask = dev->dma_mask;
+	pdev->dev.dma_parms = dev->dma_parms;
+	dma_set_coherent_mask(&pdev->dev, dev->coherent_dma_mask);
+
+	ret = platform_device_add_resources(pdev, res, nres);
+	if (ret)
+		goto err;
+
+	ret = platform_device_add_data(pdev, platdata, sizeof(*platdata));
+	if (ret)
+		goto err;
+
+	ret = platform_device_add(pdev);
+	if (ret)
+		goto err;
+
+	return pdev;
+
+err:
+	platform_device_put(pdev);
+	return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(ci13xxx_add_device);
+
+void ci13xxx_remove_device(struct platform_device *pdev)
+{
+	platform_device_unregister(pdev);
+}
+EXPORT_SYMBOL_GPL(ci13xxx_remove_device);
+
 static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 {
 	struct device	*dev = &pdev->dev;
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index d2f7e49..be078f0 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -25,4 +25,11 @@ struct ci13xxx_platform_data {
 /* Default offset of capability registers */
 #define DEF_CAPOFFSET		0x100
 
+/* Add ci13xxx device */
+struct platform_device *ci13xxx_add_device(struct device *dev,
+			struct resource *res, int nres,
+			struct ci13xxx_platform_data *platdata);
+/* Remove ci13xxx device */
+void ci13xxx_remove_device(struct platform_device *pdev);
+
 #endif
-- 
1.7.9.5

[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Richard Zhao]

We use ida_simple_get and ida_simple_remove to manage the ids.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/core.c |   21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 8b9d06f..39603d7 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -56,6 +56,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/idr.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/irq.h>
@@ -332,17 +333,24 @@ static irqreturn_t ci_irq(int irq, void *data)
 	return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci);
 }
 
+static DEFINE_IDA(ci_ida);
+
 struct platform_device *ci13xxx_add_device(struct device *dev,
 			struct resource *res, int nres,
 			struct ci13xxx_platform_data *platdata)
 {
 	struct platform_device *pdev;
-	int ret;
+	int id, ret;
 
-	/* FIXME: find a way to choose id */
-	pdev = platform_device_alloc("ci_hdrc", -1);
-	if (!pdev)
-		return ERR_PTR(-ENOMEM);
+	id = ida_simple_get(&ci_ida, 0, 0, GFP_KERNEL);
+	if (id < 0)
+		return ERR_PTR(id);
+
+	pdev = platform_device_alloc("ci_hdrc", id);
+	if (!pdev) {
+		ret = -ENOMEM;
+		goto put_id;
+	}
 
 	pdev->dev.parent = dev;
 	pdev->dev.dma_mask = dev->dma_mask;
@@ -365,6 +373,8 @@ struct platform_device *ci13xxx_add_device(struct device *dev,
 
 err:
 	platform_device_put(pdev);
+put_id:
+	ida_simple_remove(&ci_ida, id);
 	return ERR_PTR(ret);
 }
 EXPORT_SYMBOL_GPL(ci13xxx_add_device);
@@ -372,6 +382,7 @@ EXPORT_SYMBOL_GPL(ci13xxx_add_device);
 void ci13xxx_remove_device(struct platform_device *pdev)
 {
 	platform_device_unregister(pdev);
+	ida_simple_remove(&ci_ida, pdev->id);
 }
 EXPORT_SYMBOL_GPL(ci13xxx_remove_device);
 
-- 
1.7.9.5


--
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[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Richard Zhao]

We use ida_simple_get and ida_simple_remove to manage the ids.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/core.c |   21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 8b9d06f..39603d7 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -56,6 +56,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/idr.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/irq.h>
@@ -332,17 +333,24 @@ static irqreturn_t ci_irq(int irq, void *data)
 	return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci);
 }
 
+static DEFINE_IDA(ci_ida);
+
 struct platform_device *ci13xxx_add_device(struct device *dev,
 			struct resource *res, int nres,
 			struct ci13xxx_platform_data *platdata)
 {
 	struct platform_device *pdev;
-	int ret;
+	int id, ret;
 
-	/* FIXME: find a way to choose id */
-	pdev = platform_device_alloc("ci_hdrc", -1);
-	if (!pdev)
-		return ERR_PTR(-ENOMEM);
+	id = ida_simple_get(&ci_ida, 0, 0, GFP_KERNEL);
+	if (id < 0)
+		return ERR_PTR(id);
+
+	pdev = platform_device_alloc("ci_hdrc", id);
+	if (!pdev) {
+		ret = -ENOMEM;
+		goto put_id;
+	}
 
 	pdev->dev.parent = dev;
 	pdev->dev.dma_mask = dev->dma_mask;
@@ -365,6 +373,8 @@ struct platform_device *ci13xxx_add_device(struct device *dev,
 
 err:
 	platform_device_put(pdev);
+put_id:
+	ida_simple_remove(&ci_ida, id);
 	return ERR_PTR(ret);
 }
 EXPORT_SYMBOL_GPL(ci13xxx_add_device);
@@ -372,6 +382,7 @@ EXPORT_SYMBOL_GPL(ci13xxx_add_device);
 void ci13xxx_remove_device(struct platform_device *pdev)
 {
 	platform_device_unregister(pdev);
+	ida_simple_remove(&ci_ida, pdev->id);
 }
 EXPORT_SYMBOL_GPL(ci13xxx_remove_device);
 
-- 
1.7.9.5

[PATCH v7 09/14] usb: chipidea: select USB_EHCI_ROOT_HUB_TT in USB_CHIPIDEA_HOST of Kconfig

[Richard Zhao]

ci13xxx host needs Root Hub Transaction Translators.

Reported-by: Shawn Guo <shawn.guo-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/usb/chipidea/Kconfig |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
index fd36dc8..8337fb5 100644
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@@ -20,6 +20,7 @@ config USB_CHIPIDEA_UDC
 
 config USB_CHIPIDEA_HOST
 	bool "ChipIdea host controller"
+	select USB_EHCI_ROOT_HUB_TT
 	help
 	  Say Y here to enable host controller functionality of the
 	  ChipIdea driver.
-- 
1.7.9.5


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[PATCH v7 09/14] usb: chipidea: select USB_EHCI_ROOT_HUB_TT in USB_CHIPIDEA_HOST of Kconfig

[Richard Zhao]

ci13xxx host needs Root Hub Transaction Translators.

Reported-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 drivers/usb/chipidea/Kconfig |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
index fd36dc8..8337fb5 100644
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@@ -20,6 +20,7 @@ config USB_CHIPIDEA_UDC
 
 config USB_CHIPIDEA_HOST
 	bool "ChipIdea host controller"
+	select USB_EHCI_ROOT_HUB_TT
 	help
 	  Say Y here to enable host controller functionality of the
 	  ChipIdea driver.
-- 
1.7.9.5

[PATCH v7 10/14] usb: otg: add notify_connect/notify_disconnect callback

[Richard Zhao]

This let usb phy driver has a chance to change hw settings when connect
status change.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
---
 include/linux/usb/otg.h |   21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 38ab3f4..6dfdc8d 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -117,6 +117,9 @@ struct usb_phy {
 	int	(*set_suspend)(struct usb_phy *x,
 				int suspend);
 
+	/* notify phy connect status change */
+	int	(*notify_connect)(struct usb_phy *x, int port);
+	int	(*notify_disconnect)(struct usb_phy *x, int port);
 };
 
 
@@ -252,6 +255,24 @@ usb_phy_set_suspend(struct usb_phy *x, int suspend)
 }
 
 static inline int
+usb_phy_notify_connect(struct usb_phy *x, int port)
+{
+	if (x->notify_connect)
+		return x->notify_connect(x, port);
+	else
+		return 0;
+}
+
+static inline int
+usb_phy_notify_disconnect(struct usb_phy *x, int port)
+{
+	if (x->notify_disconnect)
+		return x->notify_disconnect(x, port);
+	else
+		return 0;
+}
+
+static inline int
 otg_start_srp(struct usb_otg *otg)
 {
 	if (otg && otg->start_srp)
-- 
1.7.9.5


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[PATCH v7 10/14] usb: otg: add notify_connect/notify_disconnect callback

[Richard Zhao]

This let usb phy driver has a chance to change hw settings when connect
status change.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Subodh Nijsure <snijsure@grid-net.com>
---
 include/linux/usb/otg.h |   21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 38ab3f4..6dfdc8d 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -117,6 +117,9 @@ struct usb_phy {
 	int	(*set_suspend)(struct usb_phy *x,
 				int suspend);
 
+	/* notify phy connect status change */
+	int	(*notify_connect)(struct usb_phy *x, int port);
+	int	(*notify_disconnect)(struct usb_phy *x, int port);
 };
 
 
@@ -252,6 +255,24 @@ usb_phy_set_suspend(struct usb_phy *x, int suspend)
 }
 
 static inline int
+usb_phy_notify_connect(struct usb_phy *x, int port)
+{
+	if (x->notify_connect)
+		return x->notify_connect(x, port);
+	else
+		return 0;
+}
+
+static inline int
+usb_phy_notify_disconnect(struct usb_phy *x, int port)
+{
+	if (x->notify_disconnect)
+		return x->notify_disconnect(x, port);
+	else
+		return 0;
+}
+
+static inline int
 otg_start_srp(struct usb_otg *otg)
 {
 	if (otg && otg->start_srp)
-- 
1.7.9.5

[PATCH v7 11/14] USB: notify phy when root hub port connect change

[Richard Zhao]

Phy may need to change settings when port connect change.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
---
 drivers/usb/core/hub.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 25a7422..6ecfb5e 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -20,6 +20,7 @@
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
 #include <linux/usb/quirks.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
@@ -4034,6 +4035,13 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
 		}
 	}
 
+	if (unlikely(hcd->phy && !hdev->parent)) {
+		if (portstatus & USB_PORT_STAT_CONNECTION)
+			usb_phy_notify_connect(hcd->phy, port1);
+		else
+			usb_phy_notify_disconnect(hcd->phy, port1);
+	}
+
 	/* Return now if debouncing failed or nothing is connected or
 	 * the device was "removed".
 	 */
-- 
1.7.9.5


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[PATCH v7 11/14] USB: notify phy when root hub port connect change

[Richard Zhao]

Phy may need to change settings when port connect change.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Tested-by: Subodh Nijsure <snijsure@grid-net.com>
---
 drivers/usb/core/hub.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 25a7422..6ecfb5e 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -20,6 +20,7 @@
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
 #include <linux/usb/quirks.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
@@ -4034,6 +4035,13 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
 		}
 	}
 
+	if (unlikely(hcd->phy && !hdev->parent)) {
+		if (portstatus & USB_PORT_STAT_CONNECTION)
+			usb_phy_notify_connect(hcd->phy, port1);
+		else
+			usb_phy_notify_disconnect(hcd->phy, port1);
+	}
+
 	/* Return now if debouncing failed or nothing is connected or
 	 * the device was "removed".
 	 */
-- 
1.7.9.5

[PATCH v7 12/14] usb: chipidea: permit driver bindings pass phy pointer

[Richard Zhao]

Sometimes, the driver bindings may know what phy they use.
For example, when using device tree, the usb controller may have a
phandler pointing to usb phy.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Reviewed-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
---
 drivers/usb/chipidea/ci.h    |    2 ++
 drivers/usb/chipidea/core.c  |    4 ++++
 drivers/usb/chipidea/host.c  |    1 +
 drivers/usb/chipidea/udc.c   |   11 +++++++----
 include/linux/usb/chipidea.h |    3 +++
 5 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 9655e35..d738603 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -160,6 +160,8 @@ struct ci13xxx {
 
 	struct ci13xxx_platform_data	*platdata;
 	int				vbus_active;
+	/* FIXME: some day, we'll not use global phy */
+	bool				global_phy;
 	struct usb_phy			*transceiver;
 	struct usb_hcd			*hcd;
 };
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 39603d7..1083585 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -419,6 +419,10 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 
 	ci->dev = dev;
 	ci->platdata = dev->platform_data;
+	if (ci->platdata->phy)
+		ci->transceiver = ci->platdata->phy;
+	else
+		ci->global_phy = true;
 
 	ret = hw_device_init(ci, base);
 	if (ret < 0) {
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 4a4fdb8..ebff9f4 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -117,6 +117,7 @@ static int host_start(struct ci13xxx *ci)
 	hcd->has_tt = 1;
 
 	hcd->power_budget = ci->platdata->power_budget;
+	hcd->phy = ci->transceiver;
 
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = ci->hw_bank.cap;
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index ca9b387..ebc88c1 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1684,7 +1684,8 @@ static int udc_start(struct ci13xxx *ci)
 
 	ci->gadget.ep0 = &ci->ep0in->ep;
 
-	ci->transceiver = usb_get_transceiver();
+	if (ci->global_phy)
+		ci->transceiver = usb_get_transceiver();
 
 	if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
 		if (ci->transceiver == NULL) {
@@ -1728,7 +1729,8 @@ static int udc_start(struct ci13xxx *ci)
 remove_trans:
 	if (ci->transceiver) {
 		otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
-		usb_put_transceiver(ci->transceiver);
+		if (ci->global_phy)
+			usb_put_transceiver(ci->transceiver);
 	}
 
 	dev_err(dev, "error = %i\n", retval);
@@ -1737,7 +1739,7 @@ remove_dbg:
 unreg_device:
 	device_unregister(&ci->gadget.dev);
 put_transceiver:
-	if (ci->transceiver)
+	if (ci->transceiver && ci->global_phy)
 		usb_put_transceiver(ci->transceiver);
 free_pools:
 	dma_pool_destroy(ci->td_pool);
@@ -1771,7 +1773,8 @@ static void udc_stop(struct ci13xxx *ci)
 
 	if (ci->transceiver) {
 		otg_set_peripheral(ci->transceiver->otg, NULL);
-		usb_put_transceiver(ci->transceiver);
+		if (ci->global_phy)
+			usb_put_transceiver(ci->transceiver);
 	}
 	dbg_remove_files(&ci->gadget.dev);
 	device_unregister(&ci->gadget.dev);
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index be078f0..544825d 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -5,12 +5,15 @@
 #ifndef __LINUX_USB_CHIPIDEA_H
 #define __LINUX_USB_CHIPIDEA_H
 
+#include <linux/usb/otg.h>
+
 struct ci13xxx;
 struct ci13xxx_platform_data {
 	const char	*name;
 	/* offset of the capability registers */
 	uintptr_t	 capoffset;
 	unsigned	 power_budget;
+	struct usb_phy	*phy;
 	unsigned long	 flags;
 #define CI13XXX_REGS_SHARED		BIT(0)
 #define CI13XXX_REQUIRE_TRANSCEIVER	BIT(1)
-- 
1.7.9.5


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[PATCH v7 12/14] usb: chipidea: permit driver bindings pass phy pointer

[Richard Zhao]

Sometimes, the driver bindings may know what phy they use.
For example, when using device tree, the usb controller may have a
phandler pointing to usb phy.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Subodh Nijsure <snijsure@grid-net.com>
---
 drivers/usb/chipidea/ci.h    |    2 ++
 drivers/usb/chipidea/core.c  |    4 ++++
 drivers/usb/chipidea/host.c  |    1 +
 drivers/usb/chipidea/udc.c   |   11 +++++++----
 include/linux/usb/chipidea.h |    3 +++
 5 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 9655e35..d738603 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -160,6 +160,8 @@ struct ci13xxx {
 
 	struct ci13xxx_platform_data	*platdata;
 	int				vbus_active;
+	/* FIXME: some day, we'll not use global phy */
+	bool				global_phy;
 	struct usb_phy			*transceiver;
 	struct usb_hcd			*hcd;
 };
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 39603d7..1083585 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -419,6 +419,10 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 
 	ci->dev = dev;
 	ci->platdata = dev->platform_data;
+	if (ci->platdata->phy)
+		ci->transceiver = ci->platdata->phy;
+	else
+		ci->global_phy = true;
 
 	ret = hw_device_init(ci, base);
 	if (ret < 0) {
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 4a4fdb8..ebff9f4 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -117,6 +117,7 @@ static int host_start(struct ci13xxx *ci)
 	hcd->has_tt = 1;
 
 	hcd->power_budget = ci->platdata->power_budget;
+	hcd->phy = ci->transceiver;
 
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = ci->hw_bank.cap;
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index ca9b387..ebc88c1 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1684,7 +1684,8 @@ static int udc_start(struct ci13xxx *ci)
 
 	ci->gadget.ep0 = &ci->ep0in->ep;
 
-	ci->transceiver = usb_get_transceiver();
+	if (ci->global_phy)
+		ci->transceiver = usb_get_transceiver();
 
 	if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
 		if (ci->transceiver == NULL) {
@@ -1728,7 +1729,8 @@ static int udc_start(struct ci13xxx *ci)
 remove_trans:
 	if (ci->transceiver) {
 		otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
-		usb_put_transceiver(ci->transceiver);
+		if (ci->global_phy)
+			usb_put_transceiver(ci->transceiver);
 	}
 
 	dev_err(dev, "error = %i\n", retval);
@@ -1737,7 +1739,7 @@ remove_dbg:
 unreg_device:
 	device_unregister(&ci->gadget.dev);
 put_transceiver:
-	if (ci->transceiver)
+	if (ci->transceiver && ci->global_phy)
 		usb_put_transceiver(ci->transceiver);
 free_pools:
 	dma_pool_destroy(ci->td_pool);
@@ -1771,7 +1773,8 @@ static void udc_stop(struct ci13xxx *ci)
 
 	if (ci->transceiver) {
 		otg_set_peripheral(ci->transceiver->otg, NULL);
-		usb_put_transceiver(ci->transceiver);
+		if (ci->global_phy)
+			usb_put_transceiver(ci->transceiver);
 	}
 	dbg_remove_files(&ci->gadget.dev);
 	device_unregister(&ci->gadget.dev);
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index be078f0..544825d 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -5,12 +5,15 @@
 #ifndef __LINUX_USB_CHIPIDEA_H
 #define __LINUX_USB_CHIPIDEA_H
 
+#include <linux/usb/otg.h>
+
 struct ci13xxx;
 struct ci13xxx_platform_data {
 	const char	*name;
 	/* offset of the capability registers */
 	uintptr_t	 capoffset;
 	unsigned	 power_budget;
+	struct usb_phy	*phy;
 	unsigned long	 flags;
 #define CI13XXX_REGS_SHARED		BIT(0)
 #define CI13XXX_REQUIRE_TRANSCEIVER	BIT(1)
-- 
1.7.9.5

[PATCH v7 13/14] usb: otg: add basic mxs phy driver support

[Richard Zhao]

mxs phy is used in Freescale i.MX SoCs, for example
imx23, imx28, imx6Q. This patch adds the basic host
support.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Signed-off-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
Cc: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
---
 Documentation/devicetree/bindings/usb/mxs-phy.txt |   13 ++
 drivers/usb/otg/Kconfig                           |    9 +
 drivers/usb/otg/Makefile                          |    1 +
 drivers/usb/otg/mxs-phy.c                         |  197 +++++++++++++++++++++
 4 files changed, 220 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/mxs-phy.txt
 create mode 100644 drivers/usb/otg/mxs-phy.c

diff --git a/Documentation/devicetree/bindings/usb/mxs-phy.txt b/Documentation/devicetree/bindings/usb/mxs-phy.txt
new file mode 100644
index 0000000..5835b27
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/mxs-phy.txt
@@ -0,0 +1,13 @@
+* Freescale MXS USB Phy Device
+
+Required properties:
+- compatible: Should be "fsl,imx23-usbphy"
+- reg: Should contain registers location and length
+- interrupts: Should contain phy interrupt
+
+Example:
+usbphy1: usbphy@020c9000 {
+	compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";
+	reg = <0x020c9000 0x1000>;
+	interrupts = <0 44 0x04>;
+};
diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
index 5c87db0..669eb32 100644
--- a/drivers/usb/otg/Kconfig
+++ b/drivers/usb/otg/Kconfig
@@ -116,6 +116,15 @@ config FSL_USB2_OTG
 	help
 	  Enable this to support Freescale USB OTG transceiver.
 
+config USB_MXS_PHY
+	tristate "Freescale MXS USB PHY support"
+	select STMP_DEVICE
+	select USB_OTG_UTILS
+	help
+	  Enable this to support the Freescale MXS USB PHY.
+
+	  MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x.
+
 config USB_MV_OTG
 	tristate "Marvell USB OTG support"
 	depends on USB_EHCI_MV && USB_MV_UDC && USB_SUSPEND
diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
index 41aa509..a844b8d 100644
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -20,4 +20,5 @@ obj-$(CONFIG_USB_MSM_OTG)	+= msm_otg.o
 obj-$(CONFIG_AB8500_USB)	+= ab8500-usb.o
 fsl_usb2_otg-objs		:= fsl_otg.o otg_fsm.o
 obj-$(CONFIG_FSL_USB2_OTG)	+= fsl_usb2_otg.o
+obj-$(CONFIG_USB_MXS_PHY)	+= mxs-phy.o
 obj-$(CONFIG_USB_MV_OTG)	+= mv_otg.o
diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c
new file mode 100644
index 0000000..d64c1fe
--- /dev/null
+++ b/drivers/usb/otg/mxs-phy.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/usb/otg.h>
+#include <linux/stmp_device.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#define DRIVER_NAME "mxs_phy"
+
+#define HW_USBPHY_PWD				0x00
+#define HW_USBPHY_CTRL				0x30
+#define HW_USBPHY_CTRL_SET			0x34
+#define HW_USBPHY_CTRL_CLR			0x38
+
+#define BM_USBPHY_CTRL_SFTRST			BIT(31)
+#define BM_USBPHY_CTRL_CLKGATE			BIT(30)
+#define BM_USBPHY_CTRL_ENUTMILEVEL3		BIT(15)
+#define BM_USBPHY_CTRL_ENUTMILEVEL2		BIT(14)
+#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT	BIT(1)
+
+struct mxs_phy {
+	struct usb_phy phy;
+	struct clk *clk;
+	int connected:1;
+};
+
+#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
+
+static void mxs_phy_hw_init(struct mxs_phy *mxs_phy)
+{
+	void __iomem *base = mxs_phy->phy.io_priv;
+
+	stmp_reset_block(base + HW_USBPHY_CTRL);
+
+	/* Power up the PHY */
+	writel_relaxed(0, base + HW_USBPHY_PWD);
+
+	/* enable FS/LS device */
+	writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 |
+			BM_USBPHY_CTRL_ENUTMILEVEL3,
+			base + HW_USBPHY_CTRL_SET);
+}
+
+static int mxs_phy_init(struct usb_phy *phy)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	clk_prepare_enable(mxs_phy->clk);
+	mxs_phy_hw_init(mxs_phy);
+
+	return 0;
+}
+
+static void mxs_phy_shutdown(struct usb_phy *phy)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+			phy->io_priv + HW_USBPHY_CTRL_SET);
+
+	clk_disable_unprepare(mxs_phy->clk);
+}
+
+static int mxs_phy_on_connect(struct usb_phy *phy, int port)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	dev_dbg(phy->dev, "Connect on port %d\n", port);
+
+	if (mxs_phy->connected)
+		return 0;
+	mxs_phy_hw_init(to_mxs_phy(phy));
+	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+			phy->io_priv + HW_USBPHY_CTRL_SET);
+	mxs_phy->connected = 1;
+
+	return 0;
+}
+
+static int mxs_phy_on_disconnect(struct usb_phy *phy, int port)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	dev_dbg(phy->dev, "Disconnect on port %d\n", port);
+
+	if (!mxs_phy->connected)
+		return 0;
+	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+			phy->io_priv + HW_USBPHY_CTRL_CLR);
+	mxs_phy->connected = 0;
+
+	return 0;
+}
+
+static int mxs_phy_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	void __iomem *base;
+	struct clk *clk;
+	struct mxs_phy *mxs_phy;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "can't get device resources\n");
+		return -ENOENT;
+	}
+
+	base = devm_request_and_ioremap(&pdev->dev, res);
+	if (!base)
+		return -EBUSY;
+
+	clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(clk)) {
+		dev_err(&pdev->dev,
+			"can't get the clock, err=%ld", PTR_ERR(clk));
+		return PTR_ERR(clk);
+	}
+
+	mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL);
+	if (!mxs_phy) {
+		dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n");
+		return -ENOMEM;
+	}
+
+	mxs_phy->phy.io_priv		= base;
+	mxs_phy->phy.dev		= &pdev->dev;
+	mxs_phy->phy.label		= DRIVER_NAME;
+	mxs_phy->phy.init		= mxs_phy_init;
+	mxs_phy->phy.shutdown		= mxs_phy_shutdown;
+	mxs_phy->phy.notify_connect	= mxs_phy_on_connect;
+	mxs_phy->phy.notify_disconnect	= mxs_phy_on_disconnect;
+
+	ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier);
+
+	mxs_phy->clk = clk;
+
+	platform_set_drvdata(pdev, &mxs_phy->phy);
+
+	return 0;
+}
+
+static int __devexit mxs_phy_remove(struct platform_device *pdev)
+{
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id mxs_phy_dt_ids[] = {
+	{ .compatible = "fsl,imx23-usbphy", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
+
+static struct platform_driver mxs_phy_driver = {
+	.probe = mxs_phy_probe,
+	.remove = __devexit_p(mxs_phy_remove),
+	.driver = {
+		.name = DRIVER_NAME,
+		.owner	= THIS_MODULE,
+		.of_match_table = mxs_phy_dt_ids,
+	 },
+};
+
+static int __init mxs_phy_module_init(void)
+{
+	return platform_driver_register(&mxs_phy_driver);
+}
+postcore_initcall(mxs_phy_module_init);
+
+static void __exit mxs_phy_module_exit(void)
+{
+	platform_driver_unregister(&mxs_phy_driver);
+}
+module_exit(mxs_phy_module_exit);
+
+MODULE_ALIAS("platform:mxs-usb-phy");
+MODULE_AUTHOR("Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>");
+MODULE_AUTHOR("Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>");
+MODULE_DESCRIPTION("Freescale MXS USB PHY driver");
+MODULE_LICENSE("GPL");
-- 
1.7.9.5


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[PATCH v7 13/14] usb: otg: add basic mxs phy driver support

[Richard Zhao]

mxs phy is used in Freescale i.MX SoCs, for example
imx23, imx28, imx6Q. This patch adds the basic host
support.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Peter Chen <peter.chen@freescale.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Subodh Nijsure <snijsure@grid-net.com>
---
 Documentation/devicetree/bindings/usb/mxs-phy.txt |   13 ++
 drivers/usb/otg/Kconfig                           |    9 +
 drivers/usb/otg/Makefile                          |    1 +
 drivers/usb/otg/mxs-phy.c                         |  197 +++++++++++++++++++++
 4 files changed, 220 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/mxs-phy.txt
 create mode 100644 drivers/usb/otg/mxs-phy.c

diff --git a/Documentation/devicetree/bindings/usb/mxs-phy.txt b/Documentation/devicetree/bindings/usb/mxs-phy.txt
new file mode 100644
index 0000000..5835b27
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/mxs-phy.txt
@@ -0,0 +1,13 @@
+* Freescale MXS USB Phy Device
+
+Required properties:
+- compatible: Should be "fsl,imx23-usbphy"
+- reg: Should contain registers location and length
+- interrupts: Should contain phy interrupt
+
+Example:
+usbphy1: usbphy at 020c9000 {
+	compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";
+	reg = <0x020c9000 0x1000>;
+	interrupts = <0 44 0x04>;
+};
diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
index 5c87db0..669eb32 100644
--- a/drivers/usb/otg/Kconfig
+++ b/drivers/usb/otg/Kconfig
@@ -116,6 +116,15 @@ config FSL_USB2_OTG
 	help
 	  Enable this to support Freescale USB OTG transceiver.
 
+config USB_MXS_PHY
+	tristate "Freescale MXS USB PHY support"
+	select STMP_DEVICE
+	select USB_OTG_UTILS
+	help
+	  Enable this to support the Freescale MXS USB PHY.
+
+	  MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x.
+
 config USB_MV_OTG
 	tristate "Marvell USB OTG support"
 	depends on USB_EHCI_MV && USB_MV_UDC && USB_SUSPEND
diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
index 41aa509..a844b8d 100644
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -20,4 +20,5 @@ obj-$(CONFIG_USB_MSM_OTG)	+= msm_otg.o
 obj-$(CONFIG_AB8500_USB)	+= ab8500-usb.o
 fsl_usb2_otg-objs		:= fsl_otg.o otg_fsm.o
 obj-$(CONFIG_FSL_USB2_OTG)	+= fsl_usb2_otg.o
+obj-$(CONFIG_USB_MXS_PHY)	+= mxs-phy.o
 obj-$(CONFIG_USB_MV_OTG)	+= mv_otg.o
diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c
new file mode 100644
index 0000000..d64c1fe
--- /dev/null
+++ b/drivers/usb/otg/mxs-phy.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Marek Vasut <marex@denx.de>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/usb/otg.h>
+#include <linux/stmp_device.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#define DRIVER_NAME "mxs_phy"
+
+#define HW_USBPHY_PWD				0x00
+#define HW_USBPHY_CTRL				0x30
+#define HW_USBPHY_CTRL_SET			0x34
+#define HW_USBPHY_CTRL_CLR			0x38
+
+#define BM_USBPHY_CTRL_SFTRST			BIT(31)
+#define BM_USBPHY_CTRL_CLKGATE			BIT(30)
+#define BM_USBPHY_CTRL_ENUTMILEVEL3		BIT(15)
+#define BM_USBPHY_CTRL_ENUTMILEVEL2		BIT(14)
+#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT	BIT(1)
+
+struct mxs_phy {
+	struct usb_phy phy;
+	struct clk *clk;
+	int connected:1;
+};
+
+#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
+
+static void mxs_phy_hw_init(struct mxs_phy *mxs_phy)
+{
+	void __iomem *base = mxs_phy->phy.io_priv;
+
+	stmp_reset_block(base + HW_USBPHY_CTRL);
+
+	/* Power up the PHY */
+	writel_relaxed(0, base + HW_USBPHY_PWD);
+
+	/* enable FS/LS device */
+	writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 |
+			BM_USBPHY_CTRL_ENUTMILEVEL3,
+			base + HW_USBPHY_CTRL_SET);
+}
+
+static int mxs_phy_init(struct usb_phy *phy)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	clk_prepare_enable(mxs_phy->clk);
+	mxs_phy_hw_init(mxs_phy);
+
+	return 0;
+}
+
+static void mxs_phy_shutdown(struct usb_phy *phy)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+			phy->io_priv + HW_USBPHY_CTRL_SET);
+
+	clk_disable_unprepare(mxs_phy->clk);
+}
+
+static int mxs_phy_on_connect(struct usb_phy *phy, int port)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	dev_dbg(phy->dev, "Connect on port %d\n", port);
+
+	if (mxs_phy->connected)
+		return 0;
+	mxs_phy_hw_init(to_mxs_phy(phy));
+	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+			phy->io_priv + HW_USBPHY_CTRL_SET);
+	mxs_phy->connected = 1;
+
+	return 0;
+}
+
+static int mxs_phy_on_disconnect(struct usb_phy *phy, int port)
+{
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+	dev_dbg(phy->dev, "Disconnect on port %d\n", port);
+
+	if (!mxs_phy->connected)
+		return 0;
+	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+			phy->io_priv + HW_USBPHY_CTRL_CLR);
+	mxs_phy->connected = 0;
+
+	return 0;
+}
+
+static int mxs_phy_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	void __iomem *base;
+	struct clk *clk;
+	struct mxs_phy *mxs_phy;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "can't get device resources\n");
+		return -ENOENT;
+	}
+
+	base = devm_request_and_ioremap(&pdev->dev, res);
+	if (!base)
+		return -EBUSY;
+
+	clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(clk)) {
+		dev_err(&pdev->dev,
+			"can't get the clock, err=%ld", PTR_ERR(clk));
+		return PTR_ERR(clk);
+	}
+
+	mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL);
+	if (!mxs_phy) {
+		dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n");
+		return -ENOMEM;
+	}
+
+	mxs_phy->phy.io_priv		= base;
+	mxs_phy->phy.dev		= &pdev->dev;
+	mxs_phy->phy.label		= DRIVER_NAME;
+	mxs_phy->phy.init		= mxs_phy_init;
+	mxs_phy->phy.shutdown		= mxs_phy_shutdown;
+	mxs_phy->phy.notify_connect	= mxs_phy_on_connect;
+	mxs_phy->phy.notify_disconnect	= mxs_phy_on_disconnect;
+
+	ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier);
+
+	mxs_phy->clk = clk;
+
+	platform_set_drvdata(pdev, &mxs_phy->phy);
+
+	return 0;
+}
+
+static int __devexit mxs_phy_remove(struct platform_device *pdev)
+{
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id mxs_phy_dt_ids[] = {
+	{ .compatible = "fsl,imx23-usbphy", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
+
+static struct platform_driver mxs_phy_driver = {
+	.probe = mxs_phy_probe,
+	.remove = __devexit_p(mxs_phy_remove),
+	.driver = {
+		.name = DRIVER_NAME,
+		.owner	= THIS_MODULE,
+		.of_match_table = mxs_phy_dt_ids,
+	 },
+};
+
+static int __init mxs_phy_module_init(void)
+{
+	return platform_driver_register(&mxs_phy_driver);
+}
+postcore_initcall(mxs_phy_module_init);
+
+static void __exit mxs_phy_module_exit(void)
+{
+	platform_driver_unregister(&mxs_phy_driver);
+}
+module_exit(mxs_phy_module_exit);
+
+MODULE_ALIAS("platform:mxs-usb-phy");
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
+MODULE_DESCRIPTION("Freescale MXS USB PHY driver");
+MODULE_LICENSE("GPL");
-- 
1.7.9.5

[PATCH v7 14/14] usb: chipidea: add imx platform driver

[Richard Zhao]

This patch supports only the host-mode functionality so far.

Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Signed-off-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
Cc: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
Cc: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
---
 .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
 drivers/usb/chipidea/Makefile                      |    3 +
 drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
 3 files changed, 220 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
 create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c

diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
new file mode 100644
index 0000000..8bcd071
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
@@ -0,0 +1,20 @@
+* Freescale i.MX ci13xxx usb controllers
+
+Required properties:
+- compatible: Should be "fsl,imx27-usb"
+- reg: Should contain registers location and length
+- interrupts: Should contain controller interrupt
+
+Optional properties:
+- fsl,usbphy: phandler of usb phy that connects to the only one port
+- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
+- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port
+
+Examples:
+usb@02184000 { /* USB OTG */
+	compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
+	reg = <0x02184000 0x200>;
+	interrupts = <0 43 0x04>;
+	fsl,usbphy = <&usbphy1>;
+	fsl,vbus-power-gpios = <&gpio3 22 0>;
+};
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index b69900a..5c66d9c 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -14,3 +14,6 @@ ifneq ($(CONFIG_PCI),)
 	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_pci.o
 endif
 
+ifneq ($(CONFIG_OF_DEVICE),)
+	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_imx.o
+endif
diff --git a/drivers/usb/chipidea/ci13xxx_imx.c b/drivers/usb/chipidea/ci13xxx_imx.c
new file mode 100644
index 0000000..efae2be
--- /dev/null
+++ b/drivers/usb/chipidea/ci13xxx_imx.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/dma-mapping.h>
+#include <linux/usb/chipidea.h>
+#include <linux/clk.h>
+#include <linux/regulator/consumer.h>
+
+#include "ci.h"
+
+#define pdev_to_phy(pdev) \
+	((struct usb_phy *)platform_get_drvdata(pdev))
+
+struct ci13xxx_imx_data {
+	struct device_node *phy_np;
+	struct usb_phy *phy;
+	struct platform_device *ci_pdev;
+	struct clk *clk;
+	struct regulator *reg_vbus;
+};
+
+static struct ci13xxx_platform_data ci13xxx_imx_platdata __devinitdata  = {
+	.name			= "ci13xxx_imx",
+	.flags			= CI13XXX_REQUIRE_TRANSCEIVER |
+				  CI13XXX_PULLUP_ON_VBUS |
+				  CI13XXX_DISABLE_STREAMING,
+	.capoffset		= DEF_CAPOFFSET,
+};
+
+static int __devinit ci13xxx_imx_probe(struct platform_device *pdev)
+{
+	struct ci13xxx_imx_data *data;
+	struct platform_device *plat_ci, *phy_pdev;
+	struct device_node *phy_np;
+	struct resource *res;
+	struct regulator *reg_vbus;
+	int ret;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		dev_err(&pdev->dev, "Failed to allocate CI13xxx-IMX data!\n");
+		return -ENOMEM;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "Can't get device resources!\n");
+		return -ENOENT;
+	}
+
+	data->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(data->clk)) {
+		dev_err(&pdev->dev,
+			"Failed to get clock, err=%ld\n", PTR_ERR(data->clk));
+		return PTR_ERR(data->clk);
+	}
+
+	ret = clk_prepare_enable(data->clk);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"Failed to prepare or enable clock, err=%d\n", ret);
+		return ret;
+	}
+
+	phy_np = of_parse_phandle(pdev->dev.of_node, "fsl,usbphy", 0);
+	if (phy_np) {
+		data->phy_np = phy_np;
+		phy_pdev = of_find_device_by_node(phy_np);
+		if (phy_pdev) {
+			struct usb_phy *phy;
+			phy = pdev_to_phy(phy_pdev);
+			if (phy &&
+			    try_module_get(phy_pdev->dev.driver->owner)) {
+				usb_phy_init(phy);
+				data->phy = phy;
+			}
+		}
+	}
+
+	/* we only support host now, so enable vbus here */
+	reg_vbus = devm_regulator_get(&pdev->dev, "vbus");
+	if (!IS_ERR(reg_vbus)) {
+		ret = regulator_enable(reg_vbus);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"Failed to enable vbus regulator, err=%d\n",
+				ret);
+			goto put_np;
+		}
+		data->reg_vbus = reg_vbus;
+	} else {
+		reg_vbus = NULL;
+	}
+
+	ci13xxx_imx_platdata.phy = data->phy;
+
+	if (!pdev->dev.dma_mask) {
+		pdev->dev.dma_mask = devm_kzalloc(&pdev->dev,
+				      sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
+		if (!pdev->dev.dma_mask) {
+			ret = -ENOMEM;
+			dev_err(&pdev->dev, "Failed to alloc dma_mask!\n");
+			goto err;
+		}
+		*pdev->dev.dma_mask = DMA_BIT_MASK(32);
+		dma_set_coherent_mask(&pdev->dev, *pdev->dev.dma_mask);
+	}
+	plat_ci = ci13xxx_add_device(&pdev->dev,
+				pdev->resource, pdev->num_resources,
+				&ci13xxx_imx_platdata);
+	if (IS_ERR(plat_ci)) {
+		ret = PTR_ERR(plat_ci);
+		dev_err(&pdev->dev,
+			"Can't register ci_hdrc platform device, err=%d\n",
+			ret);
+		goto err;
+	}
+
+	data->ci_pdev = plat_ci;
+	platform_set_drvdata(pdev, data);
+
+	pm_runtime_no_callbacks(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+
+	return 0;
+
+err:
+	if (reg_vbus)
+		regulator_disable(reg_vbus);
+put_np:
+	if (phy_np)
+		of_node_put(phy_np);
+	clk_disable_unprepare(data->clk);
+	return ret;
+}
+
+static int __devexit ci13xxx_imx_remove(struct platform_device *pdev)
+{
+	struct ci13xxx_imx_data *data = platform_get_drvdata(pdev);
+
+	ci13xxx_remove_device(data->ci_pdev);
+
+	if (data->reg_vbus)
+		regulator_disable(data->reg_vbus);
+
+	if (data->phy) {
+		usb_phy_shutdown(data->phy);
+		module_put(data->phy->dev->driver->owner);
+	}
+
+	of_node_put(data->phy_np);
+
+	clk_disable_unprepare(data->clk);
+
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id ci13xxx_imx_dt_ids[] = {
+	{ .compatible = "fsl,imx27-usb", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ci13xxx_imx_dt_ids);
+
+static struct platform_driver ci13xxx_imx_driver = {
+	.probe = ci13xxx_imx_probe,
+	.remove = __devexit_p(ci13xxx_imx_remove),
+	.driver = {
+		.name = "imx_usb",
+		.owner = THIS_MODULE,
+		.of_match_table = ci13xxx_imx_dt_ids,
+	 },
+};
+
+module_platform_driver(ci13xxx_imx_driver);
+
+MODULE_ALIAS("platform:imx-usb");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("CI13xxx i.MX USB binding");
+MODULE_AUTHOR("Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>");
+MODULE_AUTHOR("Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>");
-- 
1.7.9.5


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[PATCH v7 14/14] usb: chipidea: add imx platform driver

[Richard Zhao]

This patch supports only the host-mode functionality so far.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Peter Chen <peter.chen@freescale.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Subodh Nijsure <snijsure@grid-net.com>
---
 .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
 drivers/usb/chipidea/Makefile                      |    3 +
 drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
 3 files changed, 220 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
 create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c

diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
new file mode 100644
index 0000000..8bcd071
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
@@ -0,0 +1,20 @@
+* Freescale i.MX ci13xxx usb controllers
+
+Required properties:
+- compatible: Should be "fsl,imx27-usb"
+- reg: Should contain registers location and length
+- interrupts: Should contain controller interrupt
+
+Optional properties:
+- fsl,usbphy: phandler of usb phy that connects to the only one port
+- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
+- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port
+
+Examples:
+usb at 02184000 { /* USB OTG */
+	compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
+	reg = <0x02184000 0x200>;
+	interrupts = <0 43 0x04>;
+	fsl,usbphy = <&usbphy1>;
+	fsl,vbus-power-gpios = <&gpio3 22 0>;
+};
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index b69900a..5c66d9c 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -14,3 +14,6 @@ ifneq ($(CONFIG_PCI),)
 	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_pci.o
 endif
 
+ifneq ($(CONFIG_OF_DEVICE),)
+	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_imx.o
+endif
diff --git a/drivers/usb/chipidea/ci13xxx_imx.c b/drivers/usb/chipidea/ci13xxx_imx.c
new file mode 100644
index 0000000..efae2be
--- /dev/null
+++ b/drivers/usb/chipidea/ci13xxx_imx.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Marek Vasut <marex@denx.de>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/dma-mapping.h>
+#include <linux/usb/chipidea.h>
+#include <linux/clk.h>
+#include <linux/regulator/consumer.h>
+
+#include "ci.h"
+
+#define pdev_to_phy(pdev) \
+	((struct usb_phy *)platform_get_drvdata(pdev))
+
+struct ci13xxx_imx_data {
+	struct device_node *phy_np;
+	struct usb_phy *phy;
+	struct platform_device *ci_pdev;
+	struct clk *clk;
+	struct regulator *reg_vbus;
+};
+
+static struct ci13xxx_platform_data ci13xxx_imx_platdata __devinitdata  = {
+	.name			= "ci13xxx_imx",
+	.flags			= CI13XXX_REQUIRE_TRANSCEIVER |
+				  CI13XXX_PULLUP_ON_VBUS |
+				  CI13XXX_DISABLE_STREAMING,
+	.capoffset		= DEF_CAPOFFSET,
+};
+
+static int __devinit ci13xxx_imx_probe(struct platform_device *pdev)
+{
+	struct ci13xxx_imx_data *data;
+	struct platform_device *plat_ci, *phy_pdev;
+	struct device_node *phy_np;
+	struct resource *res;
+	struct regulator *reg_vbus;
+	int ret;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		dev_err(&pdev->dev, "Failed to allocate CI13xxx-IMX data!\n");
+		return -ENOMEM;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "Can't get device resources!\n");
+		return -ENOENT;
+	}
+
+	data->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(data->clk)) {
+		dev_err(&pdev->dev,
+			"Failed to get clock, err=%ld\n", PTR_ERR(data->clk));
+		return PTR_ERR(data->clk);
+	}
+
+	ret = clk_prepare_enable(data->clk);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"Failed to prepare or enable clock, err=%d\n", ret);
+		return ret;
+	}
+
+	phy_np = of_parse_phandle(pdev->dev.of_node, "fsl,usbphy", 0);
+	if (phy_np) {
+		data->phy_np = phy_np;
+		phy_pdev = of_find_device_by_node(phy_np);
+		if (phy_pdev) {
+			struct usb_phy *phy;
+			phy = pdev_to_phy(phy_pdev);
+			if (phy &&
+			    try_module_get(phy_pdev->dev.driver->owner)) {
+				usb_phy_init(phy);
+				data->phy = phy;
+			}
+		}
+	}
+
+	/* we only support host now, so enable vbus here */
+	reg_vbus = devm_regulator_get(&pdev->dev, "vbus");
+	if (!IS_ERR(reg_vbus)) {
+		ret = regulator_enable(reg_vbus);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"Failed to enable vbus regulator, err=%d\n",
+				ret);
+			goto put_np;
+		}
+		data->reg_vbus = reg_vbus;
+	} else {
+		reg_vbus = NULL;
+	}
+
+	ci13xxx_imx_platdata.phy = data->phy;
+
+	if (!pdev->dev.dma_mask) {
+		pdev->dev.dma_mask = devm_kzalloc(&pdev->dev,
+				      sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
+		if (!pdev->dev.dma_mask) {
+			ret = -ENOMEM;
+			dev_err(&pdev->dev, "Failed to alloc dma_mask!\n");
+			goto err;
+		}
+		*pdev->dev.dma_mask = DMA_BIT_MASK(32);
+		dma_set_coherent_mask(&pdev->dev, *pdev->dev.dma_mask);
+	}
+	plat_ci = ci13xxx_add_device(&pdev->dev,
+				pdev->resource, pdev->num_resources,
+				&ci13xxx_imx_platdata);
+	if (IS_ERR(plat_ci)) {
+		ret = PTR_ERR(plat_ci);
+		dev_err(&pdev->dev,
+			"Can't register ci_hdrc platform device, err=%d\n",
+			ret);
+		goto err;
+	}
+
+	data->ci_pdev = plat_ci;
+	platform_set_drvdata(pdev, data);
+
+	pm_runtime_no_callbacks(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+
+	return 0;
+
+err:
+	if (reg_vbus)
+		regulator_disable(reg_vbus);
+put_np:
+	if (phy_np)
+		of_node_put(phy_np);
+	clk_disable_unprepare(data->clk);
+	return ret;
+}
+
+static int __devexit ci13xxx_imx_remove(struct platform_device *pdev)
+{
+	struct ci13xxx_imx_data *data = platform_get_drvdata(pdev);
+
+	ci13xxx_remove_device(data->ci_pdev);
+
+	if (data->reg_vbus)
+		regulator_disable(data->reg_vbus);
+
+	if (data->phy) {
+		usb_phy_shutdown(data->phy);
+		module_put(data->phy->dev->driver->owner);
+	}
+
+	of_node_put(data->phy_np);
+
+	clk_disable_unprepare(data->clk);
+
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id ci13xxx_imx_dt_ids[] = {
+	{ .compatible = "fsl,imx27-usb", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ci13xxx_imx_dt_ids);
+
+static struct platform_driver ci13xxx_imx_driver = {
+	.probe = ci13xxx_imx_probe,
+	.remove = __devexit_p(ci13xxx_imx_remove),
+	.driver = {
+		.name = "imx_usb",
+		.owner = THIS_MODULE,
+		.of_match_table = ci13xxx_imx_dt_ids,
+	 },
+};
+
+module_platform_driver(ci13xxx_imx_driver);
+
+MODULE_ALIAS("platform:imx-usb");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("CI13xxx i.MX USB binding");
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
-- 
1.7.9.5

Re: [PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marc Kleine-Budde]

[-- Attachment #1: Type: text/plain, Size: 3374 bytes --]

On 06/25/2012 08:56 AM, Richard Zhao wrote:
> We use ida_simple_get and ida_simple_remove to manage the ids.
> 
> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

Removing the "ci13xxx_imx" module doesn't work as expected:

ci_hdrc ci_hdrc.0: remove, state 1
usb usb1: USB disconnect, device number 1
ci_hdrc ci_hdrc.0: USB bus 1 deregistered
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
pgd = c6bb8000
[0000006c] *pgd=46a7e831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in: ci13xxx_imx(-) ci_hdrc
CPU: 0    Not tainted  (3.5.0-rc4-00055-g35d73a8-dirty #80)
PC is at ida_remove+0xa0/0x110
LR is at ida_simple_remove+0x30/0x60
pc : [<c0154294>]    lr : [<c01544f4>]    psr: a0000093
sp : c6be3ed0  ip : 80000000  fp : 0092f008
r10: d9a22647  r9 : c6be2000  r8 : 08421085
r7 : 00000001  r6 : 0000034b  r5 : bf00a3a8  r4 : 00000000
r3 : c087d6b0  r2 : 001bb89f  r1 : 6b6b6b6b  r0 : 00000068
Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 46bb8000  DAC: 00000015
Process rmmod (pid: 136, stack limit = 0xc6be2270)
Stack: (0xc6be3ed0 to 0xc6be4000)
3ec0:                                     c6be2000 20000013 6b6b6b6b bf00a3a8
3ee0: c6be2000 c0009408 00000000 c01544f4 c6ad5430 c7865980 bf01562c bf01501c
3f00: bf015000 c7865988 bf01562c c018dad8 c018dac4 c018c5e0 bf01562c c7865988
3f20: c78659bc c018cdbc c6b78040 bf015680 bf01562c c0e670d0 0092f0b8 c018c438
3f40: bf015680 c6be2000 00000000 c004c56c c74ca308 33316963 5f787878 00786d69
3f60: 0092f008 c00a5088 c7812138 c6b5b388 00000000 c6b79860 c6b5b388 c0088648
3f80: 00000003 c6b79860 c6be2000 00088730 00002002 00000001 0092f088 be82fe5c
3fa0: 00000081 c0009260 00000001 0092f088 0092f0b8 00000800 b6eb865c be82fc00
3fc0: 00000001 0092f088 be82fe5c 00000081 0092f088 00000000 00000800 0092f008
3fe0: b6e7cbc0 be82fc04 b6ef65f8 b6e7cbcc 60000010 0092f0b8 00000000 00000000
[<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
[<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
[<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
[<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
[<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
[<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
[<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
[<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
---[ end trace 7d882a2086a6a3d8 ]---
note: rmmod[136] exited with preempt_count 1

Marc
-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |


[-- Attachment #2: OpenPGP digital signature --]
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[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marc Kleine-Budde]

On 06/25/2012 08:56 AM, Richard Zhao wrote:
> We use ida_simple_get and ida_simple_remove to manage the ids.
> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Reviewed-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

Removing the "ci13xxx_imx" module doesn't work as expected:

ci_hdrc ci_hdrc.0: remove, state 1
usb usb1: USB disconnect, device number 1
ci_hdrc ci_hdrc.0: USB bus 1 deregistered
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
pgd = c6bb8000
[0000006c] *pgd=46a7e831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in: ci13xxx_imx(-) ci_hdrc
CPU: 0    Not tainted  (3.5.0-rc4-00055-g35d73a8-dirty #80)
PC is at ida_remove+0xa0/0x110
LR is at ida_simple_remove+0x30/0x60
pc : [<c0154294>]    lr : [<c01544f4>]    psr: a0000093
sp : c6be3ed0  ip : 80000000  fp : 0092f008
r10: d9a22647  r9 : c6be2000  r8 : 08421085
r7 : 00000001  r6 : 0000034b  r5 : bf00a3a8  r4 : 00000000
r3 : c087d6b0  r2 : 001bb89f  r1 : 6b6b6b6b  r0 : 00000068
Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 46bb8000  DAC: 00000015
Process rmmod (pid: 136, stack limit = 0xc6be2270)
Stack: (0xc6be3ed0 to 0xc6be4000)
3ec0:                                     c6be2000 20000013 6b6b6b6b bf00a3a8
3ee0: c6be2000 c0009408 00000000 c01544f4 c6ad5430 c7865980 bf01562c bf01501c
3f00: bf015000 c7865988 bf01562c c018dad8 c018dac4 c018c5e0 bf01562c c7865988
3f20: c78659bc c018cdbc c6b78040 bf015680 bf01562c c0e670d0 0092f0b8 c018c438
3f40: bf015680 c6be2000 00000000 c004c56c c74ca308 33316963 5f787878 00786d69
3f60: 0092f008 c00a5088 c7812138 c6b5b388 00000000 c6b79860 c6b5b388 c0088648
3f80: 00000003 c6b79860 c6be2000 00088730 00002002 00000001 0092f088 be82fe5c
3fa0: 00000081 c0009260 00000001 0092f088 0092f0b8 00000800 b6eb865c be82fc00
3fc0: 00000001 0092f088 be82fe5c 00000081 0092f088 00000000 00000800 0092f008
3fe0: b6e7cbc0 be82fc04 b6ef65f8 b6e7cbcc 60000010 0092f0b8 00000000 00000000
[<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
[<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
[<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
[<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
[<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
[<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
[<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
[<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
---[ end trace 7d882a2086a6a3d8 ]---
note: rmmod[136] exited with preempt_count 1

Marc
-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |

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Re: [PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Richard Zhao]

[-- Attachment #1.1: Type: text/plain, Size: 3284 bytes --]

Could you use my USB test branch? 
-- 
Sent from my Android phone with K-9 Mail. Please excuse my brevity.

Marc Kleine-Budde <mkl@pengutronix.de> wrote:

On 06/25/2012 08:56 AM, Richard Zhao wrote:
> We use ida_simple_get and ida_simple_remove to manage the ids.
> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Reviewed-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

Removing the "ci13xxx_imx" module doesn't work as expected:

ci_hdrc ci_hdrc.0: remove, state 1
usb usb1: USB disconnect, device number 1
ci_hdrc ci_hdrc.0: USB bus 1 deregistered
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
pgd = c6bb8000
[0000006c] *pgd=46a7e831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in: ci13xxx_imx(-) ci_hdrc
CPU: 0 Not tainted (3.5.0-rc4-00055-g35d73a8-dirty #80)
PC is at ida_remove+0xa0/0x110
LR is at ida_simple_remove+0x30/0x60
pc : [<c0154294>] lr : [<c01544f4>] psr: a0000093
sp : c6be3ed0 ip : 80000000 fp : 0092f008
r10: d9a22647 r9 : c6be2000 r8 : 08421085
r7 : 00000001 r6 : 0000034b r5 : bf00a3a8 r4 : 00000000
r3 : c087d6b0 r2 : 001bb89f r1 : 6b6b6b6b r0 : 00000068
Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0005317f Table: 46bb8000 DAC: 00000015
Process rmmod (pid: 136, stack limit = 0xc6be2270)
Stack: (0xc6be3ed0 to 0xc6be4000)
3ec0: c6be2000 20000013 6b6b6b6b bf00a3a8
3ee0: c6be2000 c0009408 00000000 c01544f4 c6ad5430 c7865980 bf01562c bf01501c
3f00: bf015000 c7865988 bf01562c c018dad8 c018dac4 c018c5e0 bf01562c c7865988
3f20: c78659bc c018cdbc c6b78040 bf015680 bf01562c c0e670d0 0092f0b8 c018c438
3f40: bf015680 c6be2000 00000000 c004c56c c74ca308 33316963 5f787878 00786d69
3f60: 0092f008 c00a5088 c7812138 c6b5b388 00000000 c6b79860 c6b5b388 c0088648
3f80: 00000003 c6b79860 c6be2000 00088730 00002002 00000001 0092f088 be82fe5c
3fa0: 00000081 c0009260 00000001 0092f088 0092f0b8 00000800 b6eb865c be82fc00
3fc0: 00000001 0092f088 be82fe5c 00000081 0092f088 00000000 00000800 0092f008
3fe0: b6e7cbc0 be82fc04 b6ef65f8 b6e7cbcc 60000010 0092f0b8 00000000 00000000
[<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
[<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
[<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
[<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
[<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
[<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
[<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
[<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
---[ end trace 7d882a2086a6a3d8 ]---
note: rmmod[136] exited with preempt_count 1

Marc
-- 
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |


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[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Richard Zhao]

Could you use my USB test branch? 
-- 
Sent from my Android phone with K-9 Mail. Please excuse my brevity.

Marc Kleine-Budde <mkl@pengutronix.de> wrote:

On 06/25/2012 08:56 AM, Richard Zhao wrote:
> We use ida_simple_get and ida_simple_remove to manage the ids.
> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Reviewed-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

Removing the "ci13xxx_imx" module doesn't work as expected:

ci_hdrc ci_hdrc.0: remove, state 1
usb usb1: USB disconnect, device number 1
ci_hdrc ci_hdrc.0: USB bus 1 deregistered
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
pgd = c6bb8000
[0000006c] *pgd=46a7e831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in: ci13xxx_imx(-) ci_hdrc
CPU: 0 Not tainted (3.5.0-rc4-00055-g35d73a8-dirty #80)
PC is at ida_remove+0xa0/0x110
LR is at ida_simple_remove+0x30/0x60
pc : [<c0154294>] lr : [<c01544f4>] psr: a0000093
sp : c6be3ed0 ip : 80000000 fp : 0092f008
r10: d9a22647 r9 : c6be2000 r8 : 08421085
r7 : 00000001 r6 : 0000034b r5 : bf00a3a8 r4 : 00000000
r3 : c087d6b0 r2 : 001bb89f r1 : 6b6b6b6b r0 : 00000068
Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0005317f Table: 46bb8000 DAC: 00000015
Process rmmod (pid: 136, stack limit = 0xc6be2270)
Stack: (0xc6be3ed0 to 0xc6be4000)
3ec0: c6be2000 20000013 6b6b6b6b bf00a3a8
3ee0: c6be2000 c0009408 00000000 c01544f4 c6ad5430 c7865980 bf01562c bf01501c
3f00: bf015000 c7865988 bf01562c c018dad8 c018dac4 c018c5e0 bf01562c c7865988
3f20: c78659bc c018cdbc c6b78040 bf015680 bf01562c c0e670d0 0092f0b8 c018c438
3f40: bf015680 c6be2000 00000000 c004c56c c74ca308 33316963 5f787878 00786d69
3f60: 0092f008 c00a5088 c7812138 c6b5b388 00000000 c6b79860 c6b5b388 c0088648
3f80: 00000003 c6b79860 c6be2000 00088730 00002002 00000001 0092f088 be82fe5c
3fa0: 00000081 c0009260 00000001 0092f088 0092f0b8 00000800 b6eb865c be82fc00
3fc0: 00000001 0092f088 be82fe5c 00000081 0092f088 00000000 00000800 0092f008
3fe0: b6e7cbc0 be82fc04 b6ef65f8 b6e7cbcc 60000010 0092f0b8 00000000 00000000
[<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
[<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
[<bf01501c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
[<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
[<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
[<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
[<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
[<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
---[ end trace 7d882a2086a6a3d8 ]---
note: rmmod[136] exited with preempt_count 1

Marc
-- 
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |

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Re: [PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marc Kleine-Budde]

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On 06/25/2012 12:03 PM, Richard Zhao wrote:
> Could you use my USB test branch? 

Same result:

ci_hdrc ci_hdrc.0: remove, state 1
usb usb1: USB disconnect, device number 1
ci_hdrc ci_hdrc.0: USB bus 1 deregistered
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
pgd = c6ba4000
[0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)
PC is at ida_remove+0xa0/0x110
LR is at ida_simple_remove+0x30/0x60
pc : [<c0154294>]    lr : [<c01544f4>]    psr: a0000093
sp : c6b9fed0  ip : 80000000  fp : 0023f008
r10: d9a22647  r9 : c6b9e000  r8 : 08421085
r7 : 00000001  r6 : 0000034b  r5 : bf00de34  r4 : 00000000
r3 : c6a7f0c0  r2 : 001bb89f  r1 : 6b6b6b6b  r0 : 00000068
Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 46ba4000  DAC: 00000015
Process rmmod (pid: 142, stack limit = 0xc6b9e270)
Stack: (0xc6b9fed0 to 0xc6ba0000)
fec0:                                     c6b9e000 20000013 6b6b6b6b bf00de34
fee0: c6b9e000 c0009408 00000000 c01544f4 c082a3b0 c7865980 bf019634 bf01901c
ff00: bf019000 c7865988 bf019634 c018dad8 c018dac4 c018c5e0 bf019634 c7865988
ff20: c78659bc c018cdbc c6a86360 bf019688 bf019634 c0e690d0 0023f0b8 c018c438
ff40: bf019688 c6b9e000 00000000 c004c56c c75352a8 33316963 5f787878 00786d69
ff60: 0023f008 c00a5088 c7812138 c6a4a388 00000000 c782c908 c6a4a388 c0088648
ff80: 00000003 c782c908 c6b9e000 00088730 00002002 00000001 0023f088 beea3e5c
ffa0: 00000081 c0009260 00000001 0023f088 0023f0b8 00000800 b6f4c65c beea3c00
ffc0: 00000001 0023f088 beea3e5c 00000081 0023f088 00000000 00000800 0023f008
ffe0: b6f10bc0 beea3c04 b6f8a5f8 b6f10bcc 60000010 0023f0b8 00000000 00000000
[<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
[<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
[<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
[<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
[<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
[<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
[<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
[<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
---[ end trace 74ff20eb0c5179ff ]---
note: rmmod[142] exited with preempt_count 1
Segmentation fault

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |


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[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marc Kleine-Budde]

On 06/25/2012 12:03 PM, Richard Zhao wrote:
> Could you use my USB test branch? 

Same result:

ci_hdrc ci_hdrc.0: remove, state 1
usb usb1: USB disconnect, device number 1
ci_hdrc ci_hdrc.0: USB bus 1 deregistered
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
pgd = c6ba4000
[0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)
PC is at ida_remove+0xa0/0x110
LR is at ida_simple_remove+0x30/0x60
pc : [<c0154294>]    lr : [<c01544f4>]    psr: a0000093
sp : c6b9fed0  ip : 80000000  fp : 0023f008
r10: d9a22647  r9 : c6b9e000  r8 : 08421085
r7 : 00000001  r6 : 0000034b  r5 : bf00de34  r4 : 00000000
r3 : c6a7f0c0  r2 : 001bb89f  r1 : 6b6b6b6b  r0 : 00000068
Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 46ba4000  DAC: 00000015
Process rmmod (pid: 142, stack limit = 0xc6b9e270)
Stack: (0xc6b9fed0 to 0xc6ba0000)
fec0:                                     c6b9e000 20000013 6b6b6b6b bf00de34
fee0: c6b9e000 c0009408 00000000 c01544f4 c082a3b0 c7865980 bf019634 bf01901c
ff00: bf019000 c7865988 bf019634 c018dad8 c018dac4 c018c5e0 bf019634 c7865988
ff20: c78659bc c018cdbc c6a86360 bf019688 bf019634 c0e690d0 0023f0b8 c018c438
ff40: bf019688 c6b9e000 00000000 c004c56c c75352a8 33316963 5f787878 00786d69
ff60: 0023f008 c00a5088 c7812138 c6a4a388 00000000 c782c908 c6a4a388 c0088648
ff80: 00000003 c782c908 c6b9e000 00088730 00002002 00000001 0023f088 beea3e5c
ffa0: 00000081 c0009260 00000001 0023f088 0023f0b8 00000800 b6f4c65c beea3c00
ffc0: 00000001 0023f088 beea3e5c 00000081 0023f088 00000000 00000800 0023f008
ffe0: b6f10bc0 beea3c04 b6f8a5f8 b6f10bcc 60000010 0023f0b8 00000000 00000000
[<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
[<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
[<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
[<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
[<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
[<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
[<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
[<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
---[ end trace 74ff20eb0c5179ff ]---
note: rmmod[142] exited with preempt_count 1
Segmentation fault

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |

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Re: [PATCH v7 14/14] usb: chipidea: add imx platform driver

[Marc Kleine-Budde]

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On 06/25/2012 08:56 AM, Richard Zhao wrote:
> This patch supports only the host-mode functionality so far.
> 
> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Signed-off-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
> Cc: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Cc: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> Cc: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Cc: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
> Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
> ---
>  .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
>  drivers/usb/chipidea/Makefile                      |    3 +
>  drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
>  3 files changed, 220 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>  create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
> 
> diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> new file mode 100644
> index 0000000..8bcd071
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> @@ -0,0 +1,20 @@
> +* Freescale i.MX ci13xxx usb controllers
> +
> +Required properties:
> +- compatible: Should be "fsl,imx27-usb"
> +- reg: Should contain registers location and length
> +- interrupts: Should contain controller interrupt
> +
> +Optional properties:
> +- fsl,usbphy: phandler of usb phy that connects to the only one port

> +- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
> +- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port

These two properties are not implemented, are they?
vbus is handled via a fixed regulator.

Further I'm looking into the phy and otg implementation. I think the
handling of the regulator should go into mxs-phy.c, not into the
ci13xxx_imx.c

Marc
-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |




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[PATCH v7 14/14] usb: chipidea: add imx platform driver

[Marc Kleine-Budde]

On 06/25/2012 08:56 AM, Richard Zhao wrote:
> This patch supports only the host-mode functionality so far.
> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Peter Chen <peter.chen@freescale.com>
> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Cc: Felipe Balbi <balbi@ti.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Tested-by: Subodh Nijsure <snijsure@grid-net.com>
> ---
>  .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
>  drivers/usb/chipidea/Makefile                      |    3 +
>  drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
>  3 files changed, 220 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>  create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
> 
> diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> new file mode 100644
> index 0000000..8bcd071
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> @@ -0,0 +1,20 @@
> +* Freescale i.MX ci13xxx usb controllers
> +
> +Required properties:
> +- compatible: Should be "fsl,imx27-usb"
> +- reg: Should contain registers location and length
> +- interrupts: Should contain controller interrupt
> +
> +Optional properties:
> +- fsl,usbphy: phandler of usb phy that connects to the only one port

> +- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
> +- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port

These two properties are not implemented, are they?
vbus is handled via a fixed regulator.

Further I'm looking into the phy and otg implementation. I think the
handling of the regulator should go into mxs-phy.c, not into the
ci13xxx_imx.c

Marc
-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |



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Re: [PATCH v7 04/14] usb: chipidea: msm: add remove method

[ABRAHAM, KISHON VIJAY]

Hi,

On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
<richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org> wrote:
> From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
>
> allow this driver to be removed too.
>
> Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> ---
>  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
>  1 file changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
> index 8d438b8..68512d4 100644
> --- a/drivers/usb/chipidea/ci13xxx_msm.c
> +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
>        if (ret)
>                goto put_platform;
>
> +       platform_set_drvdata(pdev, plat_ci);
> +
>        pm_runtime_no_callbacks(&pdev->dev);
>        pm_runtime_enable(&pdev->dev);
>
> @@ -95,16 +97,22 @@ put_platform:
>        return ret;
>  }
>
> +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> +{
> +       struct platform_device *plat_ci = platform_get_drvdata(pdev);

How about a pm_runtime_disable() here?

> +
> +       platform_device_unregister(plat_ci);
> +
> +       return 0;
> +}

Thanks
Kishon
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[PATCH v7 04/14] usb: chipidea: msm: add remove method

[ABRAHAM, KISHON VIJAY]

Hi,

On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
<richard.zhao@freescale.com> wrote:
> From: Felipe Balbi <balbi@ti.com>
>
> allow this driver to be removed too.
>
> Signed-off-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> ---
> ?drivers/usb/chipidea/ci13xxx_msm.c | ? 20 ++++++++++++++------
> ?1 file changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
> index 8d438b8..68512d4 100644
> --- a/drivers/usb/chipidea/ci13xxx_msm.c
> +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
> ? ? ? ?if (ret)
> ? ? ? ? ? ? ? ?goto put_platform;
>
> + ? ? ? platform_set_drvdata(pdev, plat_ci);
> +
> ? ? ? ?pm_runtime_no_callbacks(&pdev->dev);
> ? ? ? ?pm_runtime_enable(&pdev->dev);
>
> @@ -95,16 +97,22 @@ put_platform:
> ? ? ? ?return ret;
> ?}
>
> +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> +{
> + ? ? ? struct platform_device *plat_ci = platform_get_drvdata(pdev);

How about a pm_runtime_disable() here?

> +
> + ? ? ? platform_device_unregister(plat_ci);
> +
> + ? ? ? return 0;
> +}

Thanks
Kishon

Re: [PATCH v7 04/14] usb: chipidea: msm: add remove method

[Marek Vasut]

Dear ABRAHAM, KISHON VIJAY,

> Hi,
> 
> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> 
> <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org> wrote:
> > From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > 
> > allow this driver to be removed too.
> > 
> > Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> > ---
> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> >  1 file changed, 14 insertions(+), 6 deletions(-)
> > 
> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> > platform_device *pdev) if (ret)
> >                goto put_platform;
> > 
> > +       platform_set_drvdata(pdev, plat_ci);
> > +
> >        pm_runtime_no_callbacks(&pdev->dev);
> >        pm_runtime_enable(&pdev->dev);
> > 
> > @@ -95,16 +97,22 @@ put_platform:
> >        return ret;
> >  }
> > 
> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> > +{
> > +       struct platform_device *plat_ci = platform_get_drvdata(pdev);
> 
> How about a pm_runtime_disable() here?

MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.

> > +
> > +       platform_device_unregister(plat_ci);
> > +
> > +       return 0;
> > +}
> 
> Thanks
> Kishon

Best regards,
Marek Vasut
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[PATCH v7 04/14] usb: chipidea: msm: add remove method

[Marek Vasut]

Dear ABRAHAM, KISHON VIJAY,

> Hi,
> 
> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> 
> <richard.zhao@freescale.com> wrote:
> > From: Felipe Balbi <balbi@ti.com>
> > 
> > allow this driver to be removed too.
> > 
> > Signed-off-by: Felipe Balbi <balbi@ti.com>
> > Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> > ---
> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> >  1 file changed, 14 insertions(+), 6 deletions(-)
> > 
> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> > platform_device *pdev) if (ret)
> >                goto put_platform;
> > 
> > +       platform_set_drvdata(pdev, plat_ci);
> > +
> >        pm_runtime_no_callbacks(&pdev->dev);
> >        pm_runtime_enable(&pdev->dev);
> > 
> > @@ -95,16 +97,22 @@ put_platform:
> >        return ret;
> >  }
> > 
> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> > +{
> > +       struct platform_device *plat_ci = platform_get_drvdata(pdev);
> 
> How about a pm_runtime_disable() here?

MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.

> > +
> > +       platform_device_unregister(plat_ci);
> > +
> > +       return 0;
> > +}
> 
> Thanks
> Kishon

Best regards,
Marek Vasut

Re: [PATCH v7 04/14] usb: chipidea: msm: add remove method

[ABRAHAM, KISHON VIJAY]

Hi,

On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex-ynQEQJNshbs@public.gmane.org> wrote:
> Dear ABRAHAM, KISHON VIJAY,
>
>> Hi,
>>
>> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
>>
>> <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org> wrote:
>> > From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
>> >
>> > allow this driver to be removed too.
>> >
>> > Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
>> > Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1562uYJLRA6qg5Q@public.gmane.orgcom>
>> > ---
>> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
>> >  1 file changed, 14 insertions(+), 6 deletions(-)
>> >
>> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
>> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
>> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
>> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
>> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
>> > platform_device *pdev) if (ret)
>> >                goto put_platform;
>> >
>> > +       platform_set_drvdata(pdev, plat_ci);
>> > +
>> >        pm_runtime_no_callbacks(&pdev->dev);
>> >        pm_runtime_enable(&pdev->dev);
>> >
>> > @@ -95,16 +97,22 @@ put_platform:
>> >        return ret;
>> >  }
>> >
>> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
>> > +{
>> > +       struct platform_device *plat_ci = platform_get_drvdata(pdev);
>>
>> How about a pm_runtime_disable() here?
>
> MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.

I was probably misled by the call to pm_runtime_enable in your probe
:-( Then can we have it removed from probe as well?

Thanks
Kishon
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[PATCH v7 04/14] usb: chipidea: msm: add remove method

[ABRAHAM, KISHON VIJAY]

Hi,

On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex@denx.de> wrote:
> Dear ABRAHAM, KISHON VIJAY,
>
>> Hi,
>>
>> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
>>
>> <richard.zhao@freescale.com> wrote:
>> > From: Felipe Balbi <balbi@ti.com>
>> >
>> > allow this driver to be removed too.
>> >
>> > Signed-off-by: Felipe Balbi <balbi@ti.com>
>> > Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
>> > ---
>> > ?drivers/usb/chipidea/ci13xxx_msm.c | ? 20 ++++++++++++++------
>> > ?1 file changed, 14 insertions(+), 6 deletions(-)
>> >
>> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
>> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
>> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
>> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
>> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
>> > platform_device *pdev) if (ret)
>> > ? ? ? ? ? ? ? ?goto put_platform;
>> >
>> > + ? ? ? platform_set_drvdata(pdev, plat_ci);
>> > +
>> > ? ? ? ?pm_runtime_no_callbacks(&pdev->dev);
>> > ? ? ? ?pm_runtime_enable(&pdev->dev);
>> >
>> > @@ -95,16 +97,22 @@ put_platform:
>> > ? ? ? ?return ret;
>> > ?}
>> >
>> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
>> > +{
>> > + ? ? ? struct platform_device *plat_ci = platform_get_drvdata(pdev);
>>
>> How about a pm_runtime_disable() here?
>
> MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.

I was probably misled by the call to pm_runtime_enable in your probe
:-( Then can we have it removed from probe as well?

Thanks
Kishon

Re: [PATCH v7 04/14] usb: chipidea: msm: add remove method

[Marek Vasut]

Dear ABRAHAM, KISHON VIJAY,

> Hi,
> 
> On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex-ynQEQJNshbs@public.gmane.org> wrote:
> > Dear ABRAHAM, KISHON VIJAY,
> > 
> >> Hi,
> >> 
> >> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> >> 
> >> <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org> wrote:
> >> > From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> >> > 
> >> > allow this driver to be removed too.
> >> > 
> >> > Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> >> > Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> >> > ---
> >> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> >> >  1 file changed, 14 insertions(+), 6 deletions(-)
> >> > 
> >> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> >> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> >> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> >> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> >> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> >> > platform_device *pdev) if (ret)
> >> >                goto put_platform;
> >> > 
> >> > +       platform_set_drvdata(pdev, plat_ci);
> >> > +
> >> >        pm_runtime_no_callbacks(&pdev->dev);
> >> >        pm_runtime_enable(&pdev->dev);
> >> > 
> >> > @@ -95,16 +97,22 @@ put_platform:
> >> >        return ret;
> >> >  }
> >> > 
> >> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> >> > +{
> >> > +       struct platform_device *plat_ci = platform_get_drvdata(pdev);
> >> 
> >> How about a pm_runtime_disable() here?
> > 
> > MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.
> 
> I was probably misled by the call to pm_runtime_enable in your probe
> 
> :-( Then can we have it removed from probe as well?

Yes, either that or properly add runtime PM support since mxc maybe does support 
it, I dunno right now.

> Thanks
> Kishon

Best regards,
Marek Vasut
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[PATCH v7 04/14] usb: chipidea: msm: add remove method

[Marek Vasut]

Dear ABRAHAM, KISHON VIJAY,

> Hi,
> 
> On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex@denx.de> wrote:
> > Dear ABRAHAM, KISHON VIJAY,
> > 
> >> Hi,
> >> 
> >> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> >> 
> >> <richard.zhao@freescale.com> wrote:
> >> > From: Felipe Balbi <balbi@ti.com>
> >> > 
> >> > allow this driver to be removed too.
> >> > 
> >> > Signed-off-by: Felipe Balbi <balbi@ti.com>
> >> > Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> >> > ---
> >> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> >> >  1 file changed, 14 insertions(+), 6 deletions(-)
> >> > 
> >> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> >> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> >> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> >> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> >> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> >> > platform_device *pdev) if (ret)
> >> >                goto put_platform;
> >> > 
> >> > +       platform_set_drvdata(pdev, plat_ci);
> >> > +
> >> >        pm_runtime_no_callbacks(&pdev->dev);
> >> >        pm_runtime_enable(&pdev->dev);
> >> > 
> >> > @@ -95,16 +97,22 @@ put_platform:
> >> >        return ret;
> >> >  }
> >> > 
> >> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> >> > +{
> >> > +       struct platform_device *plat_ci = platform_get_drvdata(pdev);
> >> 
> >> How about a pm_runtime_disable() here?
> > 
> > MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.
> 
> I was probably misled by the call to pm_runtime_enable in your probe
> 
> :-( Then can we have it removed from probe as well?

Yes, either that or properly add runtime PM support since mxc maybe does support 
it, I dunno right now.

> Thanks
> Kishon

Best regards,
Marek Vasut

Re: [PATCH v7 04/14] usb: chipidea: msm: add remove method

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 2326 bytes --]

Hi,

On Mon, Jun 25, 2012 at 03:55:22PM +0200, Marek Vasut wrote:
> Dear ABRAHAM, KISHON VIJAY,
> 
> > Hi,
> > 
> > On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex-ynQEQJNshbs@public.gmane.org> wrote:
> > > Dear ABRAHAM, KISHON VIJAY,
> > > 
> > >> Hi,
> > >> 
> > >> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> > >> 
> > >> <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org> wrote:
> > >> > From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > >> > 
> > >> > allow this driver to be removed too.
> > >> > 
> > >> > Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > >> > Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1562uYJLRA6qg5Q@public.gmane.orgcom>
> > >> > ---
> > >> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> > >> >  1 file changed, 14 insertions(+), 6 deletions(-)
> > >> > 
> > >> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> > >> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> > >> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> > >> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> > >> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> > >> > platform_device *pdev) if (ret)
> > >> >                goto put_platform;
> > >> > 
> > >> > +       platform_set_drvdata(pdev, plat_ci);
> > >> > +
> > >> >        pm_runtime_no_callbacks(&pdev->dev);
> > >> >        pm_runtime_enable(&pdev->dev);
> > >> > 
> > >> > @@ -95,16 +97,22 @@ put_platform:
> > >> >        return ret;
> > >> >  }
> > >> > 
> > >> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> > >> > +{
> > >> > +       struct platform_device *plat_ci = platform_get_drvdata(pdev);
> > >> 
> > >> How about a pm_runtime_disable() here?
> > > 
> > > MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.
> > 
> > I was probably misled by the call to pm_runtime_enable in your probe
> > 
> > :-( Then can we have it removed from probe as well?
> 
> Yes, either that or properly add runtime PM support since mxc maybe does support 
> it, I dunno right now.

I think adding pm_runtime_disable() to the exit path should be the way
to go. proper callbacks can be implemented later, but we cannot leave pm
enabled for the device.

-- 
balbi

[-- Attachment #2: Digital signature --]
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[PATCH v7 04/14] usb: chipidea: msm: add remove method

[Felipe Balbi]

Hi,

On Mon, Jun 25, 2012 at 03:55:22PM +0200, Marek Vasut wrote:
> Dear ABRAHAM, KISHON VIJAY,
> 
> > Hi,
> > 
> > On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex@denx.de> wrote:
> > > Dear ABRAHAM, KISHON VIJAY,
> > > 
> > >> Hi,
> > >> 
> > >> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> > >> 
> > >> <richard.zhao@freescale.com> wrote:
> > >> > From: Felipe Balbi <balbi@ti.com>
> > >> > 
> > >> > allow this driver to be removed too.
> > >> > 
> > >> > Signed-off-by: Felipe Balbi <balbi@ti.com>
> > >> > Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> > >> > ---
> > >> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> > >> >  1 file changed, 14 insertions(+), 6 deletions(-)
> > >> > 
> > >> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> > >> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> > >> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> > >> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> > >> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> > >> > platform_device *pdev) if (ret)
> > >> >                goto put_platform;
> > >> > 
> > >> > +       platform_set_drvdata(pdev, plat_ci);
> > >> > +
> > >> >        pm_runtime_no_callbacks(&pdev->dev);
> > >> >        pm_runtime_enable(&pdev->dev);
> > >> > 
> > >> > @@ -95,16 +97,22 @@ put_platform:
> > >> >        return ret;
> > >> >  }
> > >> > 
> > >> > +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
> > >> > +{
> > >> > +       struct platform_device *plat_ci = platform_get_drvdata(pdev);
> > >> 
> > >> How about a pm_runtime_disable() here?
> > > 
> > > MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.
> > 
> > I was probably misled by the call to pm_runtime_enable in your probe
> > 
> > :-( Then can we have it removed from probe as well?
> 
> Yes, either that or properly add runtime PM support since mxc maybe does support 
> it, I dunno right now.

I think adding pm_runtime_disable() to the exit path should be the way
to go. proper callbacks can be implemented later, but we cannot leave pm
enabled for the device.

-- 
balbi
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Re: [PATCH v7 04/14] usb: chipidea: msm: add remove method

[Marek Vasut]

Dear Felipe Balbi,

> Hi,
> 
> On Mon, Jun 25, 2012 at 03:55:22PM +0200, Marek Vasut wrote:
> > Dear ABRAHAM, KISHON VIJAY,
> > 
> > > Hi,
> > > 
> > > On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex-ynQEQJNshbs@public.gmane.org> wrote:
> > > > Dear ABRAHAM, KISHON VIJAY,
> > > > 
> > > >> Hi,
> > > >> 
> > > >> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> > > >> 
> > > >> <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org> wrote:
> > > >> > From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > > >> > 
> > > >> > allow this driver to be removed too.
> > > >> > 
> > > >> > Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > > >> > Signed-off-by: Alexander Shishkin
> > > >> > <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> ---
> > > >> > 
> > > >> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> > > >> >  1 file changed, 14 insertions(+), 6 deletions(-)
> > > >> > 
> > > >> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> > > >> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> > > >> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> > > >> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> > > >> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> > > >> > platform_device *pdev) if (ret)
> > > >> > 
> > > >> >                goto put_platform;
> > > >> > 
> > > >> > +       platform_set_drvdata(pdev, plat_ci);
> > > >> > +
> > > >> > 
> > > >> >        pm_runtime_no_callbacks(&pdev->dev);
> > > >> >        pm_runtime_enable(&pdev->dev);
> > > >> > 
> > > >> > @@ -95,16 +97,22 @@ put_platform:
> > > >> >        return ret;
> > > >> >  
> > > >> >  }
> > > >> > 
> > > >> > +static int __devexit ci13xxx_msm_remove(struct platform_device
> > > >> > *pdev) +{
> > > >> > +       struct platform_device *plat_ci =
> > > >> > platform_get_drvdata(pdev);
> > > >> 
> > > >> How about a pm_runtime_disable() here?
> > > > 
> > > > MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.
> > > 
> > > I was probably misled by the call to pm_runtime_enable in your probe
> > > 
> > > :-( Then can we have it removed from probe as well?
> > 
> > Yes, either that or properly add runtime PM support since mxc maybe does
> > support it, I dunno right now.
> 
> I think adding pm_runtime_disable() to the exit path should be the way
> to go. proper callbacks can be implemented later, but we cannot leave pm
> enabled for the device.

Agreed

Best regards,
Marek Vasut
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[PATCH v7 04/14] usb: chipidea: msm: add remove method

[Marek Vasut]

Dear Felipe Balbi,

> Hi,
> 
> On Mon, Jun 25, 2012 at 03:55:22PM +0200, Marek Vasut wrote:
> > Dear ABRAHAM, KISHON VIJAY,
> > 
> > > Hi,
> > > 
> > > On Mon, Jun 25, 2012 at 7:03 PM, Marek Vasut <marex@denx.de> wrote:
> > > > Dear ABRAHAM, KISHON VIJAY,
> > > > 
> > > >> Hi,
> > > >> 
> > > >> On Mon, Jun 25, 2012 at 12:26 PM, Richard Zhao
> > > >> 
> > > >> <richard.zhao@freescale.com> wrote:
> > > >> > From: Felipe Balbi <balbi@ti.com>
> > > >> > 
> > > >> > allow this driver to be removed too.
> > > >> > 
> > > >> > Signed-off-by: Felipe Balbi <balbi@ti.com>
> > > >> > Signed-off-by: Alexander Shishkin
> > > >> > <alexander.shishkin@linux.intel.com> ---
> > > >> > 
> > > >> >  drivers/usb/chipidea/ci13xxx_msm.c |   20 ++++++++++++++------
> > > >> >  1 file changed, 14 insertions(+), 6 deletions(-)
> > > >> > 
> > > >> > diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> > > >> > b/drivers/usb/chipidea/ci13xxx_msm.c index 8d438b8..68512d4 100644
> > > >> > --- a/drivers/usb/chipidea/ci13xxx_msm.c
> > > >> > +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> > > >> > @@ -84,6 +84,8 @@ static int __devinit ci13xxx_msm_probe(struct
> > > >> > platform_device *pdev) if (ret)
> > > >> > 
> > > >> >                goto put_platform;
> > > >> > 
> > > >> > +       platform_set_drvdata(pdev, plat_ci);
> > > >> > +
> > > >> > 
> > > >> >        pm_runtime_no_callbacks(&pdev->dev);
> > > >> >        pm_runtime_enable(&pdev->dev);
> > > >> > 
> > > >> > @@ -95,16 +97,22 @@ put_platform:
> > > >> >        return ret;
> > > >> >  
> > > >> >  }
> > > >> > 
> > > >> > +static int __devexit ci13xxx_msm_remove(struct platform_device
> > > >> > *pdev) +{
> > > >> > +       struct platform_device *plat_ci =
> > > >> > platform_get_drvdata(pdev);
> > > >> 
> > > >> How about a pm_runtime_disable() here?
> > > > 
> > > > MX28 doesn't do runtime PM yet. Actually it doesn't do any PM.
> > > 
> > > I was probably misled by the call to pm_runtime_enable in your probe
> > > 
> > > :-( Then can we have it removed from probe as well?
> > 
> > Yes, either that or properly add runtime PM support since mxc maybe does
> > support it, I dunno right now.
> 
> I think adding pm_runtime_disable() to the exit path should be the way
> to go. proper callbacks can be implemented later, but we cannot leave pm
> enabled for the device.

Agreed

Best regards,
Marek Vasut

Re: [PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Greg KH]

On Mon, Jun 25, 2012 at 02:56:18PM +0800, Richard Zhao wrote:
> From: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> 
> As reported by Dan Carpenter, there is a NULL check in udc_start() that
> follows a dereference of the pointer that's being checked. However, at
> that point udc pointer shouldn't ever be NULL and if it is, the dereference
> should cause an oops.
> 
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> Reported-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> ---
>  drivers/usb/chipidea/udc.c |    3 ---
>  1 file changed, 3 deletions(-)

First comment, you send a bunch of patches, yet you didn't sign off on
some of them, why?  If you are forwarding on patches, please sign off
showing you have reviewed them (so you can be on the path-of-blame if
there is a problem...)

There has been some discussion on some of these patches, so I'm guessing
we need a v8 set of this series at the least?

thanks,

greg k-h
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[PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Greg KH]

On Mon, Jun 25, 2012 at 02:56:18PM +0800, Richard Zhao wrote:
> From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> 
> As reported by Dan Carpenter, there is a NULL check in udc_start() that
> follows a dereference of the pointer that's being checked. However, at
> that point udc pointer shouldn't ever be NULL and if it is, the dereference
> should cause an oops.
> 
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Acked-by: Felipe Balbi <balbi@ti.com>
> ---
>  drivers/usb/chipidea/udc.c |    3 ---
>  1 file changed, 3 deletions(-)

First comment, you send a bunch of patches, yet you didn't sign off on
some of them, why?  If you are forwarding on patches, please sign off
showing you have reviewed them (so you can be on the path-of-blame if
there is a problem...)

There has been some discussion on some of these patches, so I'm guessing
we need a v8 set of this series at the least?

thanks,

greg k-h

Re: [PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Marek Vasut]

Dear Richard Zhao,

> From: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> 
> As reported by Dan Carpenter, there is a NULL check in udc_start() that
> follows a dereference of the pointer that's being checked. However, at
> that point udc pointer shouldn't ever be NULL and if it is, the dereference
> should cause an oops.
> 
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> Reported-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>

This seems correct, please add my:

Acked-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>

> ---
>  drivers/usb/chipidea/udc.c |    3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index 51f9694..cdb9212 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1647,9 +1647,6 @@ static int udc_start(struct ci13xxx *udc)
>  	struct device *dev = udc->dev;
>  	int retval = 0;
> 
> -	if (!udc)
> -		return -EINVAL;
> -
>  	spin_lock_init(&udc->lock);
> 
>  	udc->gadget.ops          = &usb_gadget_ops;

Best regards,
Marek Vasut
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[PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Marek Vasut]

Dear Richard Zhao,

> From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> 
> As reported by Dan Carpenter, there is a NULL check in udc_start() that
> follows a dereference of the pointer that's being checked. However, at
> that point udc pointer shouldn't ever be NULL and if it is, the dereference
> should cause an oops.
> 
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Acked-by: Felipe Balbi <balbi@ti.com>

This seems correct, please add my:

Acked-by: Marek Vasut <marex@denx.de>

> ---
>  drivers/usb/chipidea/udc.c |    3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index 51f9694..cdb9212 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1647,9 +1647,6 @@ static int udc_start(struct ci13xxx *udc)
>  	struct device *dev = udc->dev;
>  	int retval = 0;
> 
> -	if (!udc)
> -		return -EINVAL;
> -
>  	spin_lock_init(&udc->lock);
> 
>  	udc->gadget.ops          = &usb_gadget_ops;

Best regards,
Marek Vasut

Re: [PATCH v7 02/14] usb: chipidea: drop useless arch-check

[Marek Vasut]

Dear Richard Zhao,

> From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> 
> msm glue layer compiles on all arches just
> fine. Let's drop the unnecessary ARCH check
> so we have easier compile tests.
> 
> Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

Good move

Acked-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>

> ---
>  drivers/usb/chipidea/Makefile |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
> index cc34937..b69900a 100644
> --- a/drivers/usb/chipidea/Makefile
> +++ b/drivers/usb/chipidea/Makefile
> @@ -5,10 +5,12 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC)	+= udc.o
>  ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST)	+= host.o
>  ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG)	+= debug.o
> 
> +# Glue/Bridge layers go here
> +
> +obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
> +
> +# PCI doesn't provide stubs, need to check
>  ifneq ($(CONFIG_PCI),)
>  	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_pci.o
>  endif
> 
> -ifneq ($(CONFIG_ARCH_MSM),)
> -	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
> -endif

Best regards,
Marek Vasut
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[PATCH v7 02/14] usb: chipidea: drop useless arch-check

[Marek Vasut]

Dear Richard Zhao,

> From: Felipe Balbi <balbi@ti.com>
> 
> msm glue layer compiles on all arches just
> fine. Let's drop the unnecessary ARCH check
> so we have easier compile tests.
> 
> Signed-off-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

Good move

Acked-by: Marek Vasut <marex@denx.de>

> ---
>  drivers/usb/chipidea/Makefile |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
> index cc34937..b69900a 100644
> --- a/drivers/usb/chipidea/Makefile
> +++ b/drivers/usb/chipidea/Makefile
> @@ -5,10 +5,12 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC)	+= udc.o
>  ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST)	+= host.o
>  ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG)	+= debug.o
> 
> +# Glue/Bridge layers go here
> +
> +obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
> +
> +# PCI doesn't provide stubs, need to check
>  ifneq ($(CONFIG_PCI),)
>  	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_pci.o
>  endif
> 
> -ifneq ($(CONFIG_ARCH_MSM),)
> -	obj-$(CONFIG_USB_CHIPIDEA)	+= ci13xxx_msm.o
> -endif

Best regards,
Marek Vasut

Re: [PATCH v7 03/14] usb: chipidea: msm: add missing section annotation

[Marek Vasut]

Dear Richard Zhao,

> From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> 
> no functional changes, it will just free up some
> code if we don't have hotplug.

Well, start the sentence with a capital letter ;-)

Acked-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
> 
> Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> ---
>  drivers/usb/chipidea/ci13xxx_msm.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> b/drivers/usb/chipidea/ci13xxx_msm.c index 958069e..8d438b8 100644
> --- a/drivers/usb/chipidea/ci13xxx_msm.c
> +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> @@ -55,7 +55,7 @@ static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver =
> { .notify_event		= ci13xxx_msm_notify_event,
>  };
> 
> -static int ci13xxx_msm_probe(struct platform_device *pdev)
> +static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
>  {
>  	struct platform_device *plat_ci;
>  	int ret;

Best regards,
Marek Vasut
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[PATCH v7 03/14] usb: chipidea: msm: add missing section annotation

[Marek Vasut]

Dear Richard Zhao,

> From: Felipe Balbi <balbi@ti.com>
> 
> no functional changes, it will just free up some
> code if we don't have hotplug.

Well, start the sentence with a capital letter ;-)

Acked-by: Marek Vasut <marex@denx.de>
> 
> Signed-off-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> ---
>  drivers/usb/chipidea/ci13xxx_msm.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> b/drivers/usb/chipidea/ci13xxx_msm.c index 958069e..8d438b8 100644
> --- a/drivers/usb/chipidea/ci13xxx_msm.c
> +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> @@ -55,7 +55,7 @@ static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver =
> { .notify_event		= ci13xxx_msm_notify_event,
>  };
> 
> -static int ci13xxx_msm_probe(struct platform_device *pdev)
> +static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
>  {
>  	struct platform_device *plat_ci;
>  	int ret;

Best regards,
Marek Vasut

Re: [PATCH v7 05/14] USB: Chipidea: rename struct ci13xxx_udc_driver to struct ci13xxx_platform_data

[Marek Vasut]

Dear Richard Zhao,

> This patch rename struct ci13xxx_udc_driver and var with the type.
> 
> ci13xxx_platform_data reflect it's passed from platfrom driver.

Maybe rather driver data? As platform_data has certain different conotation to 
it.

> 
> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> ---
>  drivers/usb/chipidea/ci.h          |    4 ++--
>  drivers/usb/chipidea/ci13xxx_msm.c |    6 +++---
>  drivers/usb/chipidea/ci13xxx_pci.c |   20 ++++++++++----------
>  drivers/usb/chipidea/core.c        |   12 ++++++------
>  drivers/usb/chipidea/host.c        |    2 +-
>  drivers/usb/chipidea/udc.c         |   24 ++++++++++++------------
>  include/linux/usb/chipidea.h       |    2 +-
>  7 files changed, 35 insertions(+), 35 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
> index 50911f8..0b09330 100644
> --- a/drivers/usb/chipidea/ci.h
> +++ b/drivers/usb/chipidea/ci.h
> @@ -125,7 +125,7 @@ struct hw_bank {
>   * @remote_wakeup: host-enabled remote wakeup
>   * @suspended: suspended by host
>   * @test_mode: the selected test mode
> - * @udc_driver: platform specific information supplied by parent device
> + * @platdata: platform specific information supplied by parent device
>   * @vbus_active: is VBUS active
>   * @transceiver: pointer to USB PHY, if any
>   * @hcd: pointer to usb_hcd for ehci host driver
> @@ -158,7 +158,7 @@ struct ci13xxx {
>  	u8				suspended;
>  	u8				test_mode;
> 
> -	struct ci13xxx_udc_driver	*udc_driver;
> +	struct ci13xxx_platform_data	*platdata;
>  	int				vbus_active;
>  	struct usb_phy			*transceiver;
>  	struct usb_hcd			*hcd;
> diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> b/drivers/usb/chipidea/ci13xxx_msm.c index 68512d4..21a7c2e 100644
> --- a/drivers/usb/chipidea/ci13xxx_msm.c
> +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> @@ -45,7 +45,7 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc,
> unsigned event) }
>  }
> 
> -static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
> +static struct ci13xxx_platform_data ci13xxx_msm_platdata = {
>  	.name			= "ci13xxx_msm",
>  	.flags			= CI13XXX_REGS_SHARED |
>  				  CI13XXX_REQUIRE_TRANSCEIVER |
> @@ -75,8 +75,8 @@ static int __devinit ci13xxx_msm_probe(struct
> platform_device *pdev) goto put_platform;
>  	}
> 
> -	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
> -				       sizeof(ci13xxx_msm_udc_driver));
> +	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_platdata,
> +				       sizeof(ci13xxx_msm_platdata));
>  	if (ret)
>  		goto put_platform;
> 
> diff --git a/drivers/usb/chipidea/ci13xxx_pci.c
> b/drivers/usb/chipidea/ci13xxx_pci.c index e3dab27..cdcac3a 100644
> --- a/drivers/usb/chipidea/ci13xxx_pci.c
> +++ b/drivers/usb/chipidea/ci13xxx_pci.c
> @@ -23,17 +23,17 @@
>  /*************************************************************************
> ***** * PCI block
>  
> **************************************************************************
> ***/ -struct ci13xxx_udc_driver pci_driver = {
> +struct ci13xxx_platform_data pci_platdata = {
>  	.name		= UDC_DRIVER_NAME,
>  	.capoffset	= DEF_CAPOFFSET,
>  };
> 
> -struct ci13xxx_udc_driver langwell_pci_driver = {
> +struct ci13xxx_platform_data langwell_pci_platdata = {
>  	.name		= UDC_DRIVER_NAME,
>  	.capoffset	= 0,
>  };
> 
> -struct ci13xxx_udc_driver penwell_pci_driver = {
> +struct ci13xxx_platform_data penwell_pci_platdata = {
>  	.name		= UDC_DRIVER_NAME,
>  	.capoffset	= 0,
>  	.power_budget	= 200,
> @@ -51,12 +51,12 @@ struct ci13xxx_udc_driver penwell_pci_driver = {
>  static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
>  				       const struct pci_device_id *id)
>  {
> -	struct ci13xxx_udc_driver *driver = (void *)id->driver_data;
> +	struct ci13xxx_platform_data *platdata = (void *)id->driver_data;
>  	struct platform_device *plat_ci;
>  	struct resource res[3];
>  	int retval = 0, nres = 2;
> 
> -	if (!driver) {
> +	if (!platdata) {
>  		dev_err(&pdev->dev, "device doesn't provide driver data\n");
>  		return -ENODEV;
>  	}
> @@ -95,7 +95,7 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev
> *pdev, goto put_platform;
>  	}
> 
> -	retval = platform_device_add_data(plat_ci, driver, sizeof(*driver));
> +	retval = platform_device_add_data(plat_ci, platdata, sizeof(*platdata));
>  	if (retval)
>  		goto put_platform;
> 
> @@ -147,19 +147,19 @@ static void __devexit ci13xxx_pci_remove(struct
> pci_dev *pdev) static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
>  	{
>  		PCI_DEVICE(0x153F, 0x1004),
> -		.driver_data = (kernel_ulong_t)&pci_driver,
> +		.driver_data = (kernel_ulong_t)&pci_platdata,
>  	},
>  	{
>  		PCI_DEVICE(0x153F, 0x1006),
> -		.driver_data = (kernel_ulong_t)&pci_driver,
> +		.driver_data = (kernel_ulong_t)&pci_platdata,
>  	},
>  	{
>  		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
> -		.driver_data = (kernel_ulong_t)&langwell_pci_driver,
> +		.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
>  	},
>  	{
>  		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
> -		.driver_data = (kernel_ulong_t)&penwell_pci_driver,
> +		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
>  	},
>  	{ 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
>  };
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index 15e03b3..9a883bd 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -179,7 +179,7 @@ static int hw_device_init(struct ci13xxx *ci, void
> __iomem *base) ci->hw_bank.abs = base;
> 
>  	ci->hw_bank.cap = ci->hw_bank.abs;
> -	ci->hw_bank.cap += ci->udc_driver->capoffset;
> +	ci->hw_bank.cap += ci->platdata->capoffset;
>  	ci->hw_bank.op = ci->hw_bank.cap + ioread8(ci->hw_bank.cap);
> 
>  	hw_alloc_regmap(ci, false);
> @@ -227,11 +227,11 @@ int hw_device_reset(struct ci13xxx *ci, u32 mode)
>  		udelay(10);		/* not RTOS friendly */
> 
> 
> -	if (ci->udc_driver->notify_event)
> -		ci->udc_driver->notify_event(ci,
> +	if (ci->platdata->notify_event)
> +		ci->platdata->notify_event(ci,
>  			CI13XXX_CONTROLLER_RESET_EVENT);
> 
> -	if (ci->udc_driver->flags & CI13XXX_DISABLE_STREAMING)
> +	if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING)
>  		hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS);
> 
>  	/* USBMODE should be configured step by step */
> @@ -364,7 +364,7 @@ static int __devinit ci_hdrc_probe(struct
> platform_device *pdev) }
> 
>  	ci->dev = dev;
> -	ci->udc_driver = dev->platform_data;
> +	ci->platdata = dev->platform_data;
> 
>  	ret = hw_device_init(ci, base);
>  	if (ret < 0) {
> @@ -419,7 +419,7 @@ static int __devinit ci_hdrc_probe(struct
> platform_device *pdev) }
> 
>  	platform_set_drvdata(pdev, ci);
> -	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->udc_driver->name,
> +	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name,
>  			  ci);
>  	if (ret)
>  		goto stop;
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index 9eacd21..4a4fdb8 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -116,7 +116,7 @@ static int host_start(struct ci13xxx *ci)
>  	hcd->regs = ci->hw_bank.abs;
>  	hcd->has_tt = 1;
> 
> -	hcd->power_budget = ci->udc_driver->power_budget;
> +	hcd->power_budget = ci->platdata->power_budget;
> 
>  	ehci = hcd_to_ehci(hcd);
>  	ehci->caps = ci->hw_bank.cap;
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index cdb9212..68584bb 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1362,7 +1362,7 @@ static int ci13xxx_vbus_session(struct usb_gadget
> *_gadget, int is_active) unsigned long flags;
>  	int gadget_ready = 0;
> 
> -	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS))
> +	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
>  		return -EOPNOTSUPP;
> 
>  	spin_lock_irqsave(&udc->lock, flags);
> @@ -1378,8 +1378,8 @@ static int ci13xxx_vbus_session(struct usb_gadget
> *_gadget, int is_active) hw_device_state(udc, udc->ep0out->qh.dma);
>  		} else {
>  			hw_device_state(udc, 0);
> -			if (udc->udc_driver->notify_event)
> -				udc->udc_driver->notify_event(udc,
> +			if (udc->platdata->notify_event)
> +				udc->platdata->notify_event(udc,
>  				CI13XXX_CONTROLLER_STOPPED_EVENT);
>  			_gadget_stop_activity(&udc->gadget);
>  			pm_runtime_put_sync(&_gadget->dev);
> @@ -1514,9 +1514,9 @@ static int ci13xxx_start(struct usb_gadget *gadget,
> 
>  	udc->driver = driver;
>  	pm_runtime_get_sync(&udc->gadget.dev);
> -	if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) {
> +	if (udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
>  		if (udc->vbus_active) {
> -			if (udc->udc_driver->flags & CI13XXX_REGS_SHARED)
> +			if (udc->platdata->flags & CI13XXX_REGS_SHARED)
>  				hw_device_reset(udc, USBMODE_CM_DC);
>  		} else {
>  			pm_runtime_put_sync(&udc->gadget.dev);
> @@ -1544,11 +1544,11 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
> 
>  	spin_lock_irqsave(&udc->lock, flags);
> 
> -	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) ||
> +	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
>  			udc->vbus_active) {
>  		hw_device_state(udc, 0);
> -		if (udc->udc_driver->notify_event)
> -			udc->udc_driver->notify_event(udc,
> +		if (udc->platdata->notify_event)
> +			udc->platdata->notify_event(udc,
>  			CI13XXX_CONTROLLER_STOPPED_EVENT);
>  		udc->driver = NULL;
>  		spin_unlock_irqrestore(&udc->lock, flags);
> @@ -1581,7 +1581,7 @@ static irqreturn_t udc_irq(struct ci13xxx *udc)
> 
>  	spin_lock(&udc->lock);
> 
> -	if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
> +	if (udc->platdata->flags & CI13XXX_REGS_SHARED) {
>  		if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
>  				USBMODE_CM_DC) {
>  			spin_unlock(&udc->lock);
> @@ -1653,7 +1653,7 @@ static int udc_start(struct ci13xxx *udc)
>  	udc->gadget.speed        = USB_SPEED_UNKNOWN;
>  	udc->gadget.max_speed    = USB_SPEED_HIGH;
>  	udc->gadget.is_otg       = 0;
> -	udc->gadget.name         = udc->udc_driver->name;
> +	udc->gadget.name         = udc->platdata->name;
> 
>  	INIT_LIST_HEAD(&udc->gadget.ep_list);
> 
> @@ -1686,14 +1686,14 @@ static int udc_start(struct ci13xxx *udc)
> 
>  	udc->transceiver = usb_get_transceiver();
> 
> -	if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
> +	if (udc->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
>  		if (udc->transceiver == NULL) {
>  			retval = -ENODEV;
>  			goto free_pools;
>  		}
>  	}
> 
> -	if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) {
> +	if (!(udc->platdata->flags & CI13XXX_REGS_SHARED)) {
>  		retval = hw_device_reset(udc, USBMODE_CM_DC);
>  		if (retval)
>  			goto put_transceiver;
> diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
> index edb90d6..d4cf9706 100644
> --- a/include/linux/usb/chipidea.h
> +++ b/include/linux/usb/chipidea.h
> @@ -6,7 +6,7 @@
>  #define __LINUX_USB_CHIPIDEA_H
> 
>  struct ci13xxx;
> -struct ci13xxx_udc_driver {
> +struct ci13xxx_platform_data {
>  	const char	*name;
>  	/* offset of the capability registers */
>  	uintptr_t	 capoffset;
--
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[PATCH v7 05/14] USB: Chipidea: rename struct ci13xxx_udc_driver to struct ci13xxx_platform_data

[Marek Vasut]

Dear Richard Zhao,

> This patch rename struct ci13xxx_udc_driver and var with the type.
> 
> ci13xxx_platform_data reflect it's passed from platfrom driver.

Maybe rather driver data? As platform_data has certain different conotation to 
it.

> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Reviewed-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> ---
>  drivers/usb/chipidea/ci.h          |    4 ++--
>  drivers/usb/chipidea/ci13xxx_msm.c |    6 +++---
>  drivers/usb/chipidea/ci13xxx_pci.c |   20 ++++++++++----------
>  drivers/usb/chipidea/core.c        |   12 ++++++------
>  drivers/usb/chipidea/host.c        |    2 +-
>  drivers/usb/chipidea/udc.c         |   24 ++++++++++++------------
>  include/linux/usb/chipidea.h       |    2 +-
>  7 files changed, 35 insertions(+), 35 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
> index 50911f8..0b09330 100644
> --- a/drivers/usb/chipidea/ci.h
> +++ b/drivers/usb/chipidea/ci.h
> @@ -125,7 +125,7 @@ struct hw_bank {
>   * @remote_wakeup: host-enabled remote wakeup
>   * @suspended: suspended by host
>   * @test_mode: the selected test mode
> - * @udc_driver: platform specific information supplied by parent device
> + * @platdata: platform specific information supplied by parent device
>   * @vbus_active: is VBUS active
>   * @transceiver: pointer to USB PHY, if any
>   * @hcd: pointer to usb_hcd for ehci host driver
> @@ -158,7 +158,7 @@ struct ci13xxx {
>  	u8				suspended;
>  	u8				test_mode;
> 
> -	struct ci13xxx_udc_driver	*udc_driver;
> +	struct ci13xxx_platform_data	*platdata;
>  	int				vbus_active;
>  	struct usb_phy			*transceiver;
>  	struct usb_hcd			*hcd;
> diff --git a/drivers/usb/chipidea/ci13xxx_msm.c
> b/drivers/usb/chipidea/ci13xxx_msm.c index 68512d4..21a7c2e 100644
> --- a/drivers/usb/chipidea/ci13xxx_msm.c
> +++ b/drivers/usb/chipidea/ci13xxx_msm.c
> @@ -45,7 +45,7 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc,
> unsigned event) }
>  }
> 
> -static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
> +static struct ci13xxx_platform_data ci13xxx_msm_platdata = {
>  	.name			= "ci13xxx_msm",
>  	.flags			= CI13XXX_REGS_SHARED |
>  				  CI13XXX_REQUIRE_TRANSCEIVER |
> @@ -75,8 +75,8 @@ static int __devinit ci13xxx_msm_probe(struct
> platform_device *pdev) goto put_platform;
>  	}
> 
> -	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
> -				       sizeof(ci13xxx_msm_udc_driver));
> +	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_platdata,
> +				       sizeof(ci13xxx_msm_platdata));
>  	if (ret)
>  		goto put_platform;
> 
> diff --git a/drivers/usb/chipidea/ci13xxx_pci.c
> b/drivers/usb/chipidea/ci13xxx_pci.c index e3dab27..cdcac3a 100644
> --- a/drivers/usb/chipidea/ci13xxx_pci.c
> +++ b/drivers/usb/chipidea/ci13xxx_pci.c
> @@ -23,17 +23,17 @@
>  /*************************************************************************
> ***** * PCI block
>  
> **************************************************************************
> ***/ -struct ci13xxx_udc_driver pci_driver = {
> +struct ci13xxx_platform_data pci_platdata = {
>  	.name		= UDC_DRIVER_NAME,
>  	.capoffset	= DEF_CAPOFFSET,
>  };
> 
> -struct ci13xxx_udc_driver langwell_pci_driver = {
> +struct ci13xxx_platform_data langwell_pci_platdata = {
>  	.name		= UDC_DRIVER_NAME,
>  	.capoffset	= 0,
>  };
> 
> -struct ci13xxx_udc_driver penwell_pci_driver = {
> +struct ci13xxx_platform_data penwell_pci_platdata = {
>  	.name		= UDC_DRIVER_NAME,
>  	.capoffset	= 0,
>  	.power_budget	= 200,
> @@ -51,12 +51,12 @@ struct ci13xxx_udc_driver penwell_pci_driver = {
>  static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
>  				       const struct pci_device_id *id)
>  {
> -	struct ci13xxx_udc_driver *driver = (void *)id->driver_data;
> +	struct ci13xxx_platform_data *platdata = (void *)id->driver_data;
>  	struct platform_device *plat_ci;
>  	struct resource res[3];
>  	int retval = 0, nres = 2;
> 
> -	if (!driver) {
> +	if (!platdata) {
>  		dev_err(&pdev->dev, "device doesn't provide driver data\n");
>  		return -ENODEV;
>  	}
> @@ -95,7 +95,7 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev
> *pdev, goto put_platform;
>  	}
> 
> -	retval = platform_device_add_data(plat_ci, driver, sizeof(*driver));
> +	retval = platform_device_add_data(plat_ci, platdata, sizeof(*platdata));
>  	if (retval)
>  		goto put_platform;
> 
> @@ -147,19 +147,19 @@ static void __devexit ci13xxx_pci_remove(struct
> pci_dev *pdev) static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
>  	{
>  		PCI_DEVICE(0x153F, 0x1004),
> -		.driver_data = (kernel_ulong_t)&pci_driver,
> +		.driver_data = (kernel_ulong_t)&pci_platdata,
>  	},
>  	{
>  		PCI_DEVICE(0x153F, 0x1006),
> -		.driver_data = (kernel_ulong_t)&pci_driver,
> +		.driver_data = (kernel_ulong_t)&pci_platdata,
>  	},
>  	{
>  		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
> -		.driver_data = (kernel_ulong_t)&langwell_pci_driver,
> +		.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
>  	},
>  	{
>  		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
> -		.driver_data = (kernel_ulong_t)&penwell_pci_driver,
> +		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
>  	},
>  	{ 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
>  };
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index 15e03b3..9a883bd 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -179,7 +179,7 @@ static int hw_device_init(struct ci13xxx *ci, void
> __iomem *base) ci->hw_bank.abs = base;
> 
>  	ci->hw_bank.cap = ci->hw_bank.abs;
> -	ci->hw_bank.cap += ci->udc_driver->capoffset;
> +	ci->hw_bank.cap += ci->platdata->capoffset;
>  	ci->hw_bank.op = ci->hw_bank.cap + ioread8(ci->hw_bank.cap);
> 
>  	hw_alloc_regmap(ci, false);
> @@ -227,11 +227,11 @@ int hw_device_reset(struct ci13xxx *ci, u32 mode)
>  		udelay(10);		/* not RTOS friendly */
> 
> 
> -	if (ci->udc_driver->notify_event)
> -		ci->udc_driver->notify_event(ci,
> +	if (ci->platdata->notify_event)
> +		ci->platdata->notify_event(ci,
>  			CI13XXX_CONTROLLER_RESET_EVENT);
> 
> -	if (ci->udc_driver->flags & CI13XXX_DISABLE_STREAMING)
> +	if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING)
>  		hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS);
> 
>  	/* USBMODE should be configured step by step */
> @@ -364,7 +364,7 @@ static int __devinit ci_hdrc_probe(struct
> platform_device *pdev) }
> 
>  	ci->dev = dev;
> -	ci->udc_driver = dev->platform_data;
> +	ci->platdata = dev->platform_data;
> 
>  	ret = hw_device_init(ci, base);
>  	if (ret < 0) {
> @@ -419,7 +419,7 @@ static int __devinit ci_hdrc_probe(struct
> platform_device *pdev) }
> 
>  	platform_set_drvdata(pdev, ci);
> -	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->udc_driver->name,
> +	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name,
>  			  ci);
>  	if (ret)
>  		goto stop;
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index 9eacd21..4a4fdb8 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -116,7 +116,7 @@ static int host_start(struct ci13xxx *ci)
>  	hcd->regs = ci->hw_bank.abs;
>  	hcd->has_tt = 1;
> 
> -	hcd->power_budget = ci->udc_driver->power_budget;
> +	hcd->power_budget = ci->platdata->power_budget;
> 
>  	ehci = hcd_to_ehci(hcd);
>  	ehci->caps = ci->hw_bank.cap;
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index cdb9212..68584bb 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1362,7 +1362,7 @@ static int ci13xxx_vbus_session(struct usb_gadget
> *_gadget, int is_active) unsigned long flags;
>  	int gadget_ready = 0;
> 
> -	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS))
> +	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
>  		return -EOPNOTSUPP;
> 
>  	spin_lock_irqsave(&udc->lock, flags);
> @@ -1378,8 +1378,8 @@ static int ci13xxx_vbus_session(struct usb_gadget
> *_gadget, int is_active) hw_device_state(udc, udc->ep0out->qh.dma);
>  		} else {
>  			hw_device_state(udc, 0);
> -			if (udc->udc_driver->notify_event)
> -				udc->udc_driver->notify_event(udc,
> +			if (udc->platdata->notify_event)
> +				udc->platdata->notify_event(udc,
>  				CI13XXX_CONTROLLER_STOPPED_EVENT);
>  			_gadget_stop_activity(&udc->gadget);
>  			pm_runtime_put_sync(&_gadget->dev);
> @@ -1514,9 +1514,9 @@ static int ci13xxx_start(struct usb_gadget *gadget,
> 
>  	udc->driver = driver;
>  	pm_runtime_get_sync(&udc->gadget.dev);
> -	if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) {
> +	if (udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
>  		if (udc->vbus_active) {
> -			if (udc->udc_driver->flags & CI13XXX_REGS_SHARED)
> +			if (udc->platdata->flags & CI13XXX_REGS_SHARED)
>  				hw_device_reset(udc, USBMODE_CM_DC);
>  		} else {
>  			pm_runtime_put_sync(&udc->gadget.dev);
> @@ -1544,11 +1544,11 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
> 
>  	spin_lock_irqsave(&udc->lock, flags);
> 
> -	if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) ||
> +	if (!(udc->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
>  			udc->vbus_active) {
>  		hw_device_state(udc, 0);
> -		if (udc->udc_driver->notify_event)
> -			udc->udc_driver->notify_event(udc,
> +		if (udc->platdata->notify_event)
> +			udc->platdata->notify_event(udc,
>  			CI13XXX_CONTROLLER_STOPPED_EVENT);
>  		udc->driver = NULL;
>  		spin_unlock_irqrestore(&udc->lock, flags);
> @@ -1581,7 +1581,7 @@ static irqreturn_t udc_irq(struct ci13xxx *udc)
> 
>  	spin_lock(&udc->lock);
> 
> -	if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
> +	if (udc->platdata->flags & CI13XXX_REGS_SHARED) {
>  		if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
>  				USBMODE_CM_DC) {
>  			spin_unlock(&udc->lock);
> @@ -1653,7 +1653,7 @@ static int udc_start(struct ci13xxx *udc)
>  	udc->gadget.speed        = USB_SPEED_UNKNOWN;
>  	udc->gadget.max_speed    = USB_SPEED_HIGH;
>  	udc->gadget.is_otg       = 0;
> -	udc->gadget.name         = udc->udc_driver->name;
> +	udc->gadget.name         = udc->platdata->name;
> 
>  	INIT_LIST_HEAD(&udc->gadget.ep_list);
> 
> @@ -1686,14 +1686,14 @@ static int udc_start(struct ci13xxx *udc)
> 
>  	udc->transceiver = usb_get_transceiver();
> 
> -	if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
> +	if (udc->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
>  		if (udc->transceiver == NULL) {
>  			retval = -ENODEV;
>  			goto free_pools;
>  		}
>  	}
> 
> -	if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) {
> +	if (!(udc->platdata->flags & CI13XXX_REGS_SHARED)) {
>  		retval = hw_device_reset(udc, USBMODE_CM_DC);
>  		if (retval)
>  			goto put_transceiver;
> diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
> index edb90d6..d4cf9706 100644
> --- a/include/linux/usb/chipidea.h
> +++ b/include/linux/usb/chipidea.h
> @@ -6,7 +6,7 @@
>  #define __LINUX_USB_CHIPIDEA_H
> 
>  struct ci13xxx;
> -struct ci13xxx_udc_driver {
> +struct ci13xxx_platform_data {
>  	const char	*name;
>  	/* offset of the capability registers */
>  	uintptr_t	 capoffset;

Re: [PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Marek Vasut]

Dear Richard Zhao,

> struct ci13xxx represent the controller, which may be device or host,
> so name its variables as ci.
> 
> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> ---

Add my 
Reviewed-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>

[...]


Best regards,
Marek Vasut
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[PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Marek Vasut]

Dear Richard Zhao,

> struct ci13xxx represent the controller, which may be device or host,
> so name its variables as ci.
> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Reviewed-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> ---

Add my 
Reviewed-by: Marek Vasut <marex@denx.de>

[...]


Best regards,
Marek Vasut

Re: [PATCH v7 09/14] usb: chipidea: select USB_EHCI_ROOT_HUB_TT in USB_CHIPIDEA_HOST of Kconfig

[Marek Vasut]

Dear Richard Zhao,

> ci13xxx host needs Root Hub Transaction Translators.
> 
> Reported-by: Shawn Guo <shawn.guo-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

Acked-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>

> ---
>  drivers/usb/chipidea/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
> index fd36dc8..8337fb5 100644
> --- a/drivers/usb/chipidea/Kconfig
> +++ b/drivers/usb/chipidea/Kconfig
> @@ -20,6 +20,7 @@ config USB_CHIPIDEA_UDC
> 
>  config USB_CHIPIDEA_HOST
>  	bool "ChipIdea host controller"
> +	select USB_EHCI_ROOT_HUB_TT
>  	help
>  	  Say Y here to enable host controller functionality of the
>  	  ChipIdea driver.

Best regards,
Marek Vasut
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[PATCH v7 09/14] usb: chipidea: select USB_EHCI_ROOT_HUB_TT in USB_CHIPIDEA_HOST of Kconfig

[Marek Vasut]

Dear Richard Zhao,

> ci13xxx host needs Root Hub Transaction Translators.
> 
> Reported-by: Shawn Guo <shawn.guo@freescale.com>
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Acked-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

Acked-by: Marek Vasut <marex@denx.de>

> ---
>  drivers/usb/chipidea/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
> index fd36dc8..8337fb5 100644
> --- a/drivers/usb/chipidea/Kconfig
> +++ b/drivers/usb/chipidea/Kconfig
> @@ -20,6 +20,7 @@ config USB_CHIPIDEA_UDC
> 
>  config USB_CHIPIDEA_HOST
>  	bool "ChipIdea host controller"
> +	select USB_EHCI_ROOT_HUB_TT
>  	help
>  	  Say Y here to enable host controller functionality of the
>  	  ChipIdea driver.

Best regards,
Marek Vasut

Re: [PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Richard Zhao]

On Mon, Jun 25, 2012 at 12:17:13PM +0200, Marc Kleine-Budde wrote:
> On 06/25/2012 12:03 PM, Richard Zhao wrote:
> > Could you use my USB test branch? 
> 
> Same result:
> 
> ci_hdrc ci_hdrc.0: remove, state 1
> usb usb1: USB disconnect, device number 1
> ci_hdrc ci_hdrc.0: USB bus 1 deregistered
> Unable to handle kernel NULL pointer dereference at virtual address 0000006c
> pgd = c6ba4000
> [0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
> Internal error: Oops: 17 [#1] PREEMPT ARM
> Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
> CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)
> PC is at ida_remove+0xa0/0x110
> LR is at ida_simple_remove+0x30/0x60
> pc : [<c0154294>]    lr : [<c01544f4>]    psr: a0000093
> sp : c6b9fed0  ip : 80000000  fp : 0023f008
> r10: d9a22647  r9 : c6b9e000  r8 : 08421085
> r7 : 00000001  r6 : 0000034b  r5 : bf00de34  r4 : 00000000
> r3 : c6a7f0c0  r2 : 001bb89f  r1 : 6b6b6b6b  r0 : 00000068
> Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
> Control: 0005317f  Table: 46ba4000  DAC: 00000015
> Process rmmod (pid: 142, stack limit = 0xc6b9e270)
> Stack: (0xc6b9fed0 to 0xc6ba0000)
> fec0:                                     c6b9e000 20000013 6b6b6b6b bf00de34
> fee0: c6b9e000 c0009408 00000000 c01544f4 c082a3b0 c7865980 bf019634 bf01901c
> ff00: bf019000 c7865988 bf019634 c018dad8 c018dac4 c018c5e0 bf019634 c7865988
> ff20: c78659bc c018cdbc c6a86360 bf019688 bf019634 c0e690d0 0023f0b8 c018c438
> ff40: bf019688 c6b9e000 00000000 c004c56c c75352a8 33316963 5f787878 00786d69
> ff60: 0023f008 c00a5088 c7812138 c6a4a388 00000000 c782c908 c6a4a388 c0088648
> ff80: 00000003 c782c908 c6b9e000 00088730 00002002 00000001 0023f088 beea3e5c
> ffa0: 00000081 c0009260 00000001 0023f088 0023f0b8 00000800 b6f4c65c beea3c00
> ffc0: 00000001 0023f088 beea3e5c 00000081 0023f088 00000000 00000800 0023f008
> ffe0: b6f10bc0 beea3c04 b6f8a5f8 b6f10bcc 60000010 0023f0b8 00000000 00000000
> [<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
> [<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
> [<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
> [<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
> [<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
> [<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
> [<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
> [<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
> Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
> ---[ end trace 74ff20eb0c5179ff ]---
> note: rmmod[142] exited with preempt_count 1
> Segmentation fault
Sorry, I can not reproduce your issue. My defconfig is 
CONFIG_EXPERIMENTAL=y
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_CGROUPS=y
CONFIG_CPUSETS=y
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_IPC_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_NET_NS is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_EXPERT=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_ARCH_MXC=y
# CONFIG_MACH_MX31ADS is not set
# CONFIG_MACH_BUG is not set
CONFIG_SOC_IMX6Q=y
CONFIG_MXC_PWM=y
CONFIG_ARM_THUMBEE=y
CONFIG_ARM_ERRATA_720789=y
CONFIG_SMP=y
CONFIG_SCHED_MC=y
CONFIG_SCHED_SMT=y
CONFIG_PREEMPT=y
CONFIG_AEABI=y
CONFIG_HIGHMEM=y
CONFIG_COMPACTION=y
CONFIG_KSM=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
CONFIG_UACCESS_WITH_MEMCPY=y
CONFIG_SECCOMP=y
CONFIG_CC_STACKPROTECTOR=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_KEXEC=y
CONFIG_CRASH_DUMP=y
CONFIG_CPU_IDLE=y
CONFIG_VFP=y
CONFIG_NEON=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
CONFIG_PM_RUNTIME=y
CONFIG_PM_DEBUG=y
CONFIG_PM_ADVANCED_DEBUG=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_XFRM_USER=y
CONFIG_NET_KEY=y
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_SYN_COOKIES=y
# CONFIG_INET_LRO is not set
CONFIG_IPV6=y
CONFIG_NETLABEL=y
CONFIG_NETFILTER=y
CONFIG_CAN=m
CONFIG_BT=m
CONFIG_BT_HCIUART=m
CONFIG_BT_HCIUART_H4=y
CONFIG_BT_HCIUART_BCSP=y
CONFIG_BT_HCIUART_LL=y
CONFIG_BT_HCIBCM203X=m
CONFIG_BT_HCIBPA10X=m
CONFIG_CFG80211=m
CONFIG_WIRELESS_EXT_SYSFS=y
CONFIG_MAC80211=m
CONFIG_MAC80211_RC_PID=y
CONFIG_MAC80211_RC_DEFAULT_PID=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_CMA=y
CONFIG_CONNECTOR=y
CONFIG_MTD=y
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_OOPS=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_SST25L=y
CONFIG_MTD_NAND=y
CONFIG_MTD_ONENAND=y
CONFIG_MTD_ONENAND_VERIFY_WRITE=y
CONFIG_MTD_UBI=m
CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=65536
CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_ATA=y
# CONFIG_SATA_PMP is not set
CONFIG_SATA_AHCI_PLATFORM=y
CONFIG_PATA_IMX=m
CONFIG_PATA_PLATFORM=m
CONFIG_PATA_OF_PLATFORM=m
CONFIG_MD=y
CONFIG_BLK_DEV_DM=y
CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_CHELSIO is not set
# CONFIG_NET_VENDOR_FARADAY is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_MICROCHIP is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SMSC is not set
# CONFIG_NET_VENDOR_STMICRO is not set
CONFIG_SMSC_PHY=y
CONFIG_USB_USBNET=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_LIBERTAS_THINFIRM=m
CONFIG_LIBERTAS_THINFIRM_USB=m
CONFIG_AT76C50X_USB=m
CONFIG_USB_ZD1201=m
CONFIG_USB_NET_RNDIS_WLAN=m
CONFIG_RTL8187=m
CONFIG_MAC80211_HWSIM=m
CONFIG_ATH_COMMON=m
CONFIG_CARL9170=m
CONFIG_B43=m
CONFIG_B43_PHY_N=y
CONFIG_B43LEGACY=m
CONFIG_HOSTAP=y
CONFIG_HOSTAP_FIRMWARE=y
CONFIG_HOSTAP_FIRMWARE_NVRAM=y
CONFIG_LIBERTAS=m
CONFIG_LIBERTAS_USB=m
CONFIG_LIBERTAS_SDIO=m
CONFIG_LIBERTAS_SPI=m
CONFIG_P54_COMMON=m
CONFIG_P54_USB=m
CONFIG_P54_SPI=m
CONFIG_RT2X00=m
CONFIG_RT2500USB=m
CONFIG_RT73USB=m
CONFIG_RT2800USB=m
CONFIG_RT2800USB_RT53XX=y
CONFIG_RT2800USB_UNKNOWN=y
CONFIG_RTL8192CU=m
CONFIG_ZD1211RW=m
CONFIG_MWIFIEX=m
CONFIG_MWIFIEX_SDIO=m
CONFIG_INPUT_MOUSEDEV=m
CONFIG_INPUT_JOYDEV=y
CONFIG_INPUT_EVDEV=y
CONFIG_KEYBOARD_GPIO=y
CONFIG_MOUSE_PS2=m
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_INPUT_MISC=y
CONFIG_INPUT_UINPUT=y
CONFIG_VT_HW_CONSOLE_BINDING=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=m
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_IMX=y
CONFIG_SERIAL_IMX_CONSOLE=y
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_MUX=m
CONFIG_I2C_MUX_GPIO=m
CONFIG_I2C_MUX_PCA9541=m
CONFIG_I2C_MUX_PCA954x=m
CONFIG_I2C_DESIGNWARE_PLATFORM=m
CONFIG_I2C_GPIO=m
CONFIG_I2C_IMX=y
CONFIG_I2C_OCORES=m
CONFIG_I2C_PCA_PLATFORM=m
CONFIG_I2C_SIMTEC=m
CONFIG_I2C_XILINX=m
CONFIG_I2C_DIOLAN_U2C=m
CONFIG_I2C_PARPORT_LIGHT=m
CONFIG_I2C_TAOS_EVM=m
CONFIG_I2C_TINY_USB=m
CONFIG_I2C_STUB=m
CONFIG_SPI=y
CONFIG_SPI_ALTERA=m
CONFIG_SPI_GPIO=m
CONFIG_SPI_IMX=y
CONFIG_SPI_OC_TINY=m
CONFIG_SPI_XILINX=m
CONFIG_SPI_DESIGNWARE=m
CONFIG_SPI_DW_MMIO=m
CONFIG_SPI_SPIDEV=m
CONFIG_SPI_TLE62X0=m
CONFIG_DEBUG_GPIO=y
CONFIG_GPIO_SYSFS=y
CONFIG_W1=y
CONFIG_W1_MASTER_MXC=y
CONFIG_POWER_SUPPLY=y
CONFIG_HWMON=m
CONFIG_THERMAL=y
CONFIG_WATCHDOG=y
CONFIG_MFD_ANATOP=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_VIRTUAL_CONSUMER=y
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_ANATOP=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_VIDEO_DEV=y
CONFIG_RC_CORE=m
CONFIG_RC_ATI_REMOTE=m
CONFIG_IR_IMON=m
CONFIG_IR_MCEUSB=m
CONFIG_IR_REDRAT3=m
CONFIG_IR_STREAMZAP=m
CONFIG_RC_LOOPBACK=m
CONFIG_USB_VIDEO_CLASS=m
CONFIG_FB=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_PWM=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_VERBOSE_PRINTK=y
CONFIG_SND_DEBUG=y
# CONFIG_SND_DRIVERS is not set
# CONFIG_SND_ARM is not set
# CONFIG_SND_SPI is not set
# CONFIG_SND_USB is not set
CONFIG_SND_SOC=y
CONFIG_SND_IMX_SOC=y
CONFIG_SND_SOC_IMX_SGTL5000=y
# CONFIG_USB_HID is not set
CONFIG_USB=y
CONFIG_USB_DEBUG=y
CONFIG_USB_MON=y
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
CONFIG_USB_CHIPIDEA=m
CONFIG_USB_CHIPIDEA_HOST=y
CONFIG_USB_CHIPIDEA_DEBUG=y
CONFIG_USB_STORAGE=y
CONFIG_USB_LIBUSUAL=y
CONFIG_USB_GADGET=y
CONFIG_USB_MXS_PHY=y
CONFIG_MMC=y
CONFIG_SDIO_UART=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_SDHCI_ESDHC_IMX=y
CONFIG_MMC_MXC=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_PWM=m
CONFIG_LEDS_REGULATOR=m
CONFIG_LEDS_TRIGGER_TIMER=m
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
CONFIG_LEDS_TRIGGER_GPIO=m
CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
CONFIG_RTC_CLASS=y
CONFIG_DMADEVICES=y
CONFIG_IMX_SDMA=y
CONFIG_COMMON_CLK_DEBUG=y
CONFIG_PM_DEVFREQ=y
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
CONFIG_DEVFREQ_GOV_PERFORMANCE=y
CONFIG_DEVFREQ_GOV_POWERSAVE=y
CONFIG_DEVFREQ_GOV_USERSPACE=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
CONFIG_EXT4_FS=y
CONFIG_BTRFS_FS=y
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_JFFS2_FS=m
CONFIG_JFFS2_SUMMARY=y
CONFIG_JFFS2_FS_XATTR=y
CONFIG_JFFS2_COMPRESSION_OPTIONS=y
CONFIG_JFFS2_LZO=y
CONFIG_JFFS2_RUBIN=y
CONFIG_UBIFS_FS=m
CONFIG_CRAMFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
CONFIG_PRINTK_TIME=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_FUNCTION_TRACER=y
CONFIG_STRICT_DEVMEM=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
CONFIG_EARLY_PRINTK=y
CONFIG_SECURITY=y
CONFIG_LSM_MMAP_MIN_ADDR=0
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SMACK=y
CONFIG_SECURITY_APPARMOR=y
CONFIG_DEFAULT_SECURITY_APPARMOR=y
CONFIG_CRYPTO_CBC=m
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_LZO=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRC_CCITT=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC7=y


Thanks
Richard
> 
> Marc
> 
> -- 
> Pengutronix e.K.                  | Marc Kleine-Budde           |
> Industrial Linux Solutions        | Phone: +49-231-2826-924     |
> Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |
> 



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[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Richard Zhao]

On Mon, Jun 25, 2012 at 12:17:13PM +0200, Marc Kleine-Budde wrote:
> On 06/25/2012 12:03 PM, Richard Zhao wrote:
> > Could you use my USB test branch? 
> 
> Same result:
> 
> ci_hdrc ci_hdrc.0: remove, state 1
> usb usb1: USB disconnect, device number 1
> ci_hdrc ci_hdrc.0: USB bus 1 deregistered
> Unable to handle kernel NULL pointer dereference at virtual address 0000006c
> pgd = c6ba4000
> [0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
> Internal error: Oops: 17 [#1] PREEMPT ARM
> Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
> CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)
> PC is at ida_remove+0xa0/0x110
> LR is at ida_simple_remove+0x30/0x60
> pc : [<c0154294>]    lr : [<c01544f4>]    psr: a0000093
> sp : c6b9fed0  ip : 80000000  fp : 0023f008
> r10: d9a22647  r9 : c6b9e000  r8 : 08421085
> r7 : 00000001  r6 : 0000034b  r5 : bf00de34  r4 : 00000000
> r3 : c6a7f0c0  r2 : 001bb89f  r1 : 6b6b6b6b  r0 : 00000068
> Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
> Control: 0005317f  Table: 46ba4000  DAC: 00000015
> Process rmmod (pid: 142, stack limit = 0xc6b9e270)
> Stack: (0xc6b9fed0 to 0xc6ba0000)
> fec0:                                     c6b9e000 20000013 6b6b6b6b bf00de34
> fee0: c6b9e000 c0009408 00000000 c01544f4 c082a3b0 c7865980 bf019634 bf01901c
> ff00: bf019000 c7865988 bf019634 c018dad8 c018dac4 c018c5e0 bf019634 c7865988
> ff20: c78659bc c018cdbc c6a86360 bf019688 bf019634 c0e690d0 0023f0b8 c018c438
> ff40: bf019688 c6b9e000 00000000 c004c56c c75352a8 33316963 5f787878 00786d69
> ff60: 0023f008 c00a5088 c7812138 c6a4a388 00000000 c782c908 c6a4a388 c0088648
> ff80: 00000003 c782c908 c6b9e000 00088730 00002002 00000001 0023f088 beea3e5c
> ffa0: 00000081 c0009260 00000001 0023f088 0023f0b8 00000800 b6f4c65c beea3c00
> ffc0: 00000001 0023f088 beea3e5c 00000081 0023f088 00000000 00000800 0023f008
> ffe0: b6f10bc0 beea3c04 b6f8a5f8 b6f10bcc 60000010 0023f0b8 00000000 00000000
> [<c0154294>] (ida_remove+0xa0/0x110) from [<c01544f4>] (ida_simple_remove+0x30/0x60)
> [<c01544f4>] (ida_simple_remove+0x30/0x60) from [<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx])
> [<bf01901c>] (ci13xxx_imx_remove+0x1c/0x84 [ci13xxx_imx]) from [<c018dad8>] (platform_drv_remove+0x14/0x18)
> [<c018dad8>] (platform_drv_remove+0x14/0x18) from [<c018c5e0>] (__device_release_driver+0x58/0xa8)
> [<c018c5e0>] (__device_release_driver+0x58/0xa8) from [<c018cdbc>] (driver_detach+0xcc/0xd8)
> [<c018cdbc>] (driver_detach+0xcc/0xd8) from [<c018c438>] (bus_remove_driver+0x7c/0xc0)
> [<c018c438>] (bus_remove_driver+0x7c/0xc0) from [<c004c56c>] (sys_delete_module+0x180/0x23c)
> [<c004c56c>] (sys_delete_module+0x180/0x23c) from [<c0009260>] (ret_fast_syscall+0x0/0x2c)
> Code: e0416286 e5904004 e1a002c6 e0840100 (e5908004)
> ---[ end trace 74ff20eb0c5179ff ]---
> note: rmmod[142] exited with preempt_count 1
> Segmentation fault
Sorry, I can not reproduce your issue. My defconfig is 
CONFIG_EXPERIMENTAL=y
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_CGROUPS=y
CONFIG_CPUSETS=y
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_IPC_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_NET_NS is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_EXPERT=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_ARCH_MXC=y
# CONFIG_MACH_MX31ADS is not set
# CONFIG_MACH_BUG is not set
CONFIG_SOC_IMX6Q=y
CONFIG_MXC_PWM=y
CONFIG_ARM_THUMBEE=y
CONFIG_ARM_ERRATA_720789=y
CONFIG_SMP=y
CONFIG_SCHED_MC=y
CONFIG_SCHED_SMT=y
CONFIG_PREEMPT=y
CONFIG_AEABI=y
CONFIG_HIGHMEM=y
CONFIG_COMPACTION=y
CONFIG_KSM=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
CONFIG_UACCESS_WITH_MEMCPY=y
CONFIG_SECCOMP=y
CONFIG_CC_STACKPROTECTOR=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_KEXEC=y
CONFIG_CRASH_DUMP=y
CONFIG_CPU_IDLE=y
CONFIG_VFP=y
CONFIG_NEON=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
CONFIG_PM_RUNTIME=y
CONFIG_PM_DEBUG=y
CONFIG_PM_ADVANCED_DEBUG=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_XFRM_USER=y
CONFIG_NET_KEY=y
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_SYN_COOKIES=y
# CONFIG_INET_LRO is not set
CONFIG_IPV6=y
CONFIG_NETLABEL=y
CONFIG_NETFILTER=y
CONFIG_CAN=m
CONFIG_BT=m
CONFIG_BT_HCIUART=m
CONFIG_BT_HCIUART_H4=y
CONFIG_BT_HCIUART_BCSP=y
CONFIG_BT_HCIUART_LL=y
CONFIG_BT_HCIBCM203X=m
CONFIG_BT_HCIBPA10X=m
CONFIG_CFG80211=m
CONFIG_WIRELESS_EXT_SYSFS=y
CONFIG_MAC80211=m
CONFIG_MAC80211_RC_PID=y
CONFIG_MAC80211_RC_DEFAULT_PID=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_CMA=y
CONFIG_CONNECTOR=y
CONFIG_MTD=y
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_OOPS=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_SST25L=y
CONFIG_MTD_NAND=y
CONFIG_MTD_ONENAND=y
CONFIG_MTD_ONENAND_VERIFY_WRITE=y
CONFIG_MTD_UBI=m
CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=65536
CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_ATA=y
# CONFIG_SATA_PMP is not set
CONFIG_SATA_AHCI_PLATFORM=y
CONFIG_PATA_IMX=m
CONFIG_PATA_PLATFORM=m
CONFIG_PATA_OF_PLATFORM=m
CONFIG_MD=y
CONFIG_BLK_DEV_DM=y
CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_CHELSIO is not set
# CONFIG_NET_VENDOR_FARADAY is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_MICROCHIP is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SMSC is not set
# CONFIG_NET_VENDOR_STMICRO is not set
CONFIG_SMSC_PHY=y
CONFIG_USB_USBNET=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_LIBERTAS_THINFIRM=m
CONFIG_LIBERTAS_THINFIRM_USB=m
CONFIG_AT76C50X_USB=m
CONFIG_USB_ZD1201=m
CONFIG_USB_NET_RNDIS_WLAN=m
CONFIG_RTL8187=m
CONFIG_MAC80211_HWSIM=m
CONFIG_ATH_COMMON=m
CONFIG_CARL9170=m
CONFIG_B43=m
CONFIG_B43_PHY_N=y
CONFIG_B43LEGACY=m
CONFIG_HOSTAP=y
CONFIG_HOSTAP_FIRMWARE=y
CONFIG_HOSTAP_FIRMWARE_NVRAM=y
CONFIG_LIBERTAS=m
CONFIG_LIBERTAS_USB=m
CONFIG_LIBERTAS_SDIO=m
CONFIG_LIBERTAS_SPI=m
CONFIG_P54_COMMON=m
CONFIG_P54_USB=m
CONFIG_P54_SPI=m
CONFIG_RT2X00=m
CONFIG_RT2500USB=m
CONFIG_RT73USB=m
CONFIG_RT2800USB=m
CONFIG_RT2800USB_RT53XX=y
CONFIG_RT2800USB_UNKNOWN=y
CONFIG_RTL8192CU=m
CONFIG_ZD1211RW=m
CONFIG_MWIFIEX=m
CONFIG_MWIFIEX_SDIO=m
CONFIG_INPUT_MOUSEDEV=m
CONFIG_INPUT_JOYDEV=y
CONFIG_INPUT_EVDEV=y
CONFIG_KEYBOARD_GPIO=y
CONFIG_MOUSE_PS2=m
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_INPUT_MISC=y
CONFIG_INPUT_UINPUT=y
CONFIG_VT_HW_CONSOLE_BINDING=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=m
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_IMX=y
CONFIG_SERIAL_IMX_CONSOLE=y
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_MUX=m
CONFIG_I2C_MUX_GPIO=m
CONFIG_I2C_MUX_PCA9541=m
CONFIG_I2C_MUX_PCA954x=m
CONFIG_I2C_DESIGNWARE_PLATFORM=m
CONFIG_I2C_GPIO=m
CONFIG_I2C_IMX=y
CONFIG_I2C_OCORES=m
CONFIG_I2C_PCA_PLATFORM=m
CONFIG_I2C_SIMTEC=m
CONFIG_I2C_XILINX=m
CONFIG_I2C_DIOLAN_U2C=m
CONFIG_I2C_PARPORT_LIGHT=m
CONFIG_I2C_TAOS_EVM=m
CONFIG_I2C_TINY_USB=m
CONFIG_I2C_STUB=m
CONFIG_SPI=y
CONFIG_SPI_ALTERA=m
CONFIG_SPI_GPIO=m
CONFIG_SPI_IMX=y
CONFIG_SPI_OC_TINY=m
CONFIG_SPI_XILINX=m
CONFIG_SPI_DESIGNWARE=m
CONFIG_SPI_DW_MMIO=m
CONFIG_SPI_SPIDEV=m
CONFIG_SPI_TLE62X0=m
CONFIG_DEBUG_GPIO=y
CONFIG_GPIO_SYSFS=y
CONFIG_W1=y
CONFIG_W1_MASTER_MXC=y
CONFIG_POWER_SUPPLY=y
CONFIG_HWMON=m
CONFIG_THERMAL=y
CONFIG_WATCHDOG=y
CONFIG_MFD_ANATOP=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_VIRTUAL_CONSUMER=y
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_ANATOP=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_VIDEO_DEV=y
CONFIG_RC_CORE=m
CONFIG_RC_ATI_REMOTE=m
CONFIG_IR_IMON=m
CONFIG_IR_MCEUSB=m
CONFIG_IR_REDRAT3=m
CONFIG_IR_STREAMZAP=m
CONFIG_RC_LOOPBACK=m
CONFIG_USB_VIDEO_CLASS=m
CONFIG_FB=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_PWM=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_VERBOSE_PRINTK=y
CONFIG_SND_DEBUG=y
# CONFIG_SND_DRIVERS is not set
# CONFIG_SND_ARM is not set
# CONFIG_SND_SPI is not set
# CONFIG_SND_USB is not set
CONFIG_SND_SOC=y
CONFIG_SND_IMX_SOC=y
CONFIG_SND_SOC_IMX_SGTL5000=y
# CONFIG_USB_HID is not set
CONFIG_USB=y
CONFIG_USB_DEBUG=y
CONFIG_USB_MON=y
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
CONFIG_USB_CHIPIDEA=m
CONFIG_USB_CHIPIDEA_HOST=y
CONFIG_USB_CHIPIDEA_DEBUG=y
CONFIG_USB_STORAGE=y
CONFIG_USB_LIBUSUAL=y
CONFIG_USB_GADGET=y
CONFIG_USB_MXS_PHY=y
CONFIG_MMC=y
CONFIG_SDIO_UART=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_SDHCI_ESDHC_IMX=y
CONFIG_MMC_MXC=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_PWM=m
CONFIG_LEDS_REGULATOR=m
CONFIG_LEDS_TRIGGER_TIMER=m
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
CONFIG_LEDS_TRIGGER_GPIO=m
CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
CONFIG_RTC_CLASS=y
CONFIG_DMADEVICES=y
CONFIG_IMX_SDMA=y
CONFIG_COMMON_CLK_DEBUG=y
CONFIG_PM_DEVFREQ=y
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
CONFIG_DEVFREQ_GOV_PERFORMANCE=y
CONFIG_DEVFREQ_GOV_POWERSAVE=y
CONFIG_DEVFREQ_GOV_USERSPACE=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
CONFIG_EXT4_FS=y
CONFIG_BTRFS_FS=y
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_JFFS2_FS=m
CONFIG_JFFS2_SUMMARY=y
CONFIG_JFFS2_FS_XATTR=y
CONFIG_JFFS2_COMPRESSION_OPTIONS=y
CONFIG_JFFS2_LZO=y
CONFIG_JFFS2_RUBIN=y
CONFIG_UBIFS_FS=m
CONFIG_CRAMFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
CONFIG_PRINTK_TIME=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_FUNCTION_TRACER=y
CONFIG_STRICT_DEVMEM=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
CONFIG_EARLY_PRINTK=y
CONFIG_SECURITY=y
CONFIG_LSM_MMAP_MIN_ADDR=0
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SMACK=y
CONFIG_SECURITY_APPARMOR=y
CONFIG_DEFAULT_SECURITY_APPARMOR=y
CONFIG_CRYPTO_CBC=m
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_LZO=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRC_CCITT=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC7=y


Thanks
Richard
> 
> Marc
> 
> -- 
> Pengutronix e.K.                  | Marc Kleine-Budde           |
> Industrial Linux Solutions        | Phone: +49-231-2826-924     |
> Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |
> 

Re: [PATCH v7 14/14] usb: chipidea: add imx platform driver

[Richard Zhao]

On Mon, Jun 25, 2012 at 12:33:58PM +0200, Marc Kleine-Budde wrote:
> On 06/25/2012 08:56 AM, Richard Zhao wrote:
> > This patch supports only the host-mode functionality so far.
> > 
> > Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> > Signed-off-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
> > Cc: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> > Cc: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> > Cc: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > Cc: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
> > Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
> > ---
> >  .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
> >  drivers/usb/chipidea/Makefile                      |    3 +
> >  drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
> >  3 files changed, 220 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> >  create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> > new file mode 100644
> > index 0000000..8bcd071
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> > @@ -0,0 +1,20 @@
> > +* Freescale i.MX ci13xxx usb controllers
> > +
> > +Required properties:
> > +- compatible: Should be "fsl,imx27-usb"
> > +- reg: Should contain registers location and length
> > +- interrupts: Should contain controller interrupt
> > +
> > +Optional properties:
> > +- fsl,usbphy: phandler of usb phy that connects to the only one port
> 
> > +- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
> > +- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port
> 
> These two properties are not implemented, are they?
> vbus is handled via a fixed regulator.
I forgot to update the doc.
> 
> Further I'm looking into the phy and otg implementation. I think the
> handling of the regulator should go into mxs-phy.c, not into the
> ci13xxx_imx.c
Normally, we don't put it in phy driver. For example, most host driver
don't call phy drivers.

Thanks
Richard
> 
> Marc
> -- 
> Pengutronix e.K.                  | Marc Kleine-Budde           |
> Industrial Linux Solutions        | Phone: +49-231-2826-924     |
> Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |
> 
> 
> 



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[PATCH v7 14/14] usb: chipidea: add imx platform driver

[Richard Zhao]

On Mon, Jun 25, 2012 at 12:33:58PM +0200, Marc Kleine-Budde wrote:
> On 06/25/2012 08:56 AM, Richard Zhao wrote:
> > This patch supports only the host-mode functionality so far.
> > 
> > Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> > Signed-off-by: Marek Vasut <marex@denx.de>
> > Cc: Peter Chen <peter.chen@freescale.com>
> > Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> > Cc: Felipe Balbi <balbi@ti.com>
> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > Tested-by: Subodh Nijsure <snijsure@grid-net.com>
> > ---
> >  .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
> >  drivers/usb/chipidea/Makefile                      |    3 +
> >  drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
> >  3 files changed, 220 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> >  create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> > new file mode 100644
> > index 0000000..8bcd071
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
> > @@ -0,0 +1,20 @@
> > +* Freescale i.MX ci13xxx usb controllers
> > +
> > +Required properties:
> > +- compatible: Should be "fsl,imx27-usb"
> > +- reg: Should contain registers location and length
> > +- interrupts: Should contain controller interrupt
> > +
> > +Optional properties:
> > +- fsl,usbphy: phandler of usb phy that connects to the only one port
> 
> > +- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
> > +- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port
> 
> These two properties are not implemented, are they?
> vbus is handled via a fixed regulator.
I forgot to update the doc.
> 
> Further I'm looking into the phy and otg implementation. I think the
> handling of the regulator should go into mxs-phy.c, not into the
> ci13xxx_imx.c
Normally, we don't put it in phy driver. For example, most host driver
don't call phy drivers.

Thanks
Richard
> 
> Marc
> -- 
> Pengutronix e.K.                  | Marc Kleine-Budde           |
> Industrial Linux Solutions        | Phone: +49-231-2826-924     |
> Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |
> 
> 
> 

Re: [PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Richard Zhao]

On Tue, Jun 26, 2012 at 02:43:11PM -0700, Greg KH wrote:
> On Mon, Jun 25, 2012 at 02:56:18PM +0800, Richard Zhao wrote:
> > From: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> > 
> > As reported by Dan Carpenter, there is a NULL check in udc_start() that
> > follows a dereference of the pointer that's being checked. However, at
> > that point udc pointer shouldn't ever be NULL and if it is, the dereference
> > should cause an oops.
> > 
> > Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> > Reported-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> > Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > ---
> >  drivers/usb/chipidea/udc.c |    3 ---
> >  1 file changed, 3 deletions(-)
> 
> First comment, you send a bunch of patches, yet you didn't sign off on
> some of them, why?  If you are forwarding on patches, please sign off
> showing you have reviewed them (so you can be on the path-of-blame if
> there is a problem...)
You're right :)
> 
> There has been some discussion on some of these patches, so I'm guessing
> we need a v8 set of this series at the least?
Yes.

Thanks
Richard
> 
> thanks,
> 
> greg k-h
> 

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[PATCH v7 01/14] usb: chipidea: remove unneeded NULL check

[Richard Zhao]

On Tue, Jun 26, 2012 at 02:43:11PM -0700, Greg KH wrote:
> On Mon, Jun 25, 2012 at 02:56:18PM +0800, Richard Zhao wrote:
> > From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> > 
> > As reported by Dan Carpenter, there is a NULL check in udc_start() that
> > follows a dereference of the pointer that's being checked. However, at
> > that point udc pointer shouldn't ever be NULL and if it is, the dereference
> > should cause an oops.
> > 
> > Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> > Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> > Acked-by: Felipe Balbi <balbi@ti.com>
> > ---
> >  drivers/usb/chipidea/udc.c |    3 ---
> >  1 file changed, 3 deletions(-)
> 
> First comment, you send a bunch of patches, yet you didn't sign off on
> some of them, why?  If you are forwarding on patches, please sign off
> showing you have reviewed them (so you can be on the path-of-blame if
> there is a problem...)
You're right :)
> 
> There has been some discussion on some of these patches, so I'm guessing
> we need a v8 set of this series at the least?
Yes.

Thanks
Richard
> 
> thanks,
> 
> greg k-h
> 

Re: [PATCH v7 05/14] USB: Chipidea: rename struct ci13xxx_udc_driver to struct ci13xxx_platform_data

[Richard Zhao]

On Tue, Jun 26, 2012 at 11:54:03PM +0200, Marek Vasut wrote:
> Dear Richard Zhao,
> 
> > This patch rename struct ci13xxx_udc_driver and var with the type.
> > 
> > ci13xxx_platform_data reflect it's passed from platfrom driver.
> 
> Maybe rather driver data? As platform_data has certain different conotation to 
> it.
I prefer the current way. driver data is something that is allocated
and managed internally by the driver.

Thanks
Richard

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[PATCH v7 05/14] USB: Chipidea: rename struct ci13xxx_udc_driver to struct ci13xxx_platform_data

[Richard Zhao]

On Tue, Jun 26, 2012 at 11:54:03PM +0200, Marek Vasut wrote:
> Dear Richard Zhao,
> 
> > This patch rename struct ci13xxx_udc_driver and var with the type.
> > 
> > ci13xxx_platform_data reflect it's passed from platfrom driver.
> 
> Maybe rather driver data? As platform_data has certain different conotation to 
> it.
I prefer the current way. driver data is something that is allocated
and managed internally by the driver.

Thanks
Richard

Re: [PATCH v7 13/14] usb: otg: add basic mxs phy driver support

[Richard Zhao]

On Mon, Jun 25, 2012 at 02:56:30PM +0800, Richard Zhao wrote:
> mxs phy is used in Freescale i.MX SoCs, for example
> imx23, imx28, imx6Q. This patch adds the basic host
> support.
> 
> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Signed-off-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
> Cc: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Acked-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
> ---
>  Documentation/devicetree/bindings/usb/mxs-phy.txt |   13 ++
>  drivers/usb/otg/Kconfig                           |    9 +
>  drivers/usb/otg/Makefile                          |    1 +
>  drivers/usb/otg/mxs-phy.c                         |  197 +++++++++++++++++++++
>  4 files changed, 220 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/mxs-phy.txt
>  create mode 100644 drivers/usb/otg/mxs-phy.c
> 
> diff --git a/Documentation/devicetree/bindings/usb/mxs-phy.txt b/Documentation/devicetree/bindings/usb/mxs-phy.txt
> new file mode 100644
> index 0000000..5835b27
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/mxs-phy.txt
> @@ -0,0 +1,13 @@
> +* Freescale MXS USB Phy Device
> +
> +Required properties:
> +- compatible: Should be "fsl,imx23-usbphy"
> +- reg: Should contain registers location and length
> +- interrupts: Should contain phy interrupt
> +
> +Example:
> +usbphy1: usbphy@020c9000 {
> +	compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";
> +	reg = <0x020c9000 0x1000>;
> +	interrupts = <0 44 0x04>;
> +};
> diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
> index 5c87db0..669eb32 100644
> --- a/drivers/usb/otg/Kconfig
> +++ b/drivers/usb/otg/Kconfig
> @@ -116,6 +116,15 @@ config FSL_USB2_OTG
>  	help
>  	  Enable this to support Freescale USB OTG transceiver.
>  
> +config USB_MXS_PHY
> +	tristate "Freescale MXS USB PHY support"
> +	select STMP_DEVICE
> +	select USB_OTG_UTILS
> +	help
> +	  Enable this to support the Freescale MXS USB PHY.
> +
> +	  MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x.
> +
>  config USB_MV_OTG
>  	tristate "Marvell USB OTG support"
>  	depends on USB_EHCI_MV && USB_MV_UDC && USB_SUSPEND
> diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
> index 41aa509..a844b8d 100644
> --- a/drivers/usb/otg/Makefile
> +++ b/drivers/usb/otg/Makefile
> @@ -20,4 +20,5 @@ obj-$(CONFIG_USB_MSM_OTG)	+= msm_otg.o
>  obj-$(CONFIG_AB8500_USB)	+= ab8500-usb.o
>  fsl_usb2_otg-objs		:= fsl_otg.o otg_fsm.o
>  obj-$(CONFIG_FSL_USB2_OTG)	+= fsl_usb2_otg.o
> +obj-$(CONFIG_USB_MXS_PHY)	+= mxs-phy.o
>  obj-$(CONFIG_USB_MV_OTG)	+= mv_otg.o
> diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c
> new file mode 100644
> index 0000000..d64c1fe
> --- /dev/null
> +++ b/drivers/usb/otg/mxs-phy.c
> @@ -0,0 +1,197 @@
> +/*
> + * Copyright 2012 Freescale Semiconductor, Inc.
> + * Copyright (C) 2012 Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
> + * on behalf of DENX Software Engineering GmbH
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +#include <linux/module.h>
> +#include <linux/kernel.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/usb/otg.h>
> +#include <linux/stmp_device.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/io.h>
> +
> +#define DRIVER_NAME "mxs_phy"
> +
> +#define HW_USBPHY_PWD				0x00
> +#define HW_USBPHY_CTRL				0x30
> +#define HW_USBPHY_CTRL_SET			0x34
> +#define HW_USBPHY_CTRL_CLR			0x38
> +
> +#define BM_USBPHY_CTRL_SFTRST			BIT(31)
> +#define BM_USBPHY_CTRL_CLKGATE			BIT(30)
> +#define BM_USBPHY_CTRL_ENUTMILEVEL3		BIT(15)
> +#define BM_USBPHY_CTRL_ENUTMILEVEL2		BIT(14)
> +#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT	BIT(1)
> +
> +struct mxs_phy {
> +	struct usb_phy phy;
> +	struct clk *clk;
> +	int connected:1;
> +};
> +
> +#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
> +
> +static void mxs_phy_hw_init(struct mxs_phy *mxs_phy)
> +{
> +	void __iomem *base = mxs_phy->phy.io_priv;
> +
> +	stmp_reset_block(base + HW_USBPHY_CTRL);
> +
> +	/* Power up the PHY */
> +	writel_relaxed(0, base + HW_USBPHY_PWD);
> +
> +	/* enable FS/LS device */
> +	writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 |
> +			BM_USBPHY_CTRL_ENUTMILEVEL3,
> +			base + HW_USBPHY_CTRL_SET);
> +}
> +
> +static int mxs_phy_init(struct usb_phy *phy)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	clk_prepare_enable(mxs_phy->clk);
> +	mxs_phy_hw_init(mxs_phy);
> +
> +	return 0;
> +}
> +
> +static void mxs_phy_shutdown(struct usb_phy *phy)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
> +			phy->io_priv + HW_USBPHY_CTRL_SET);
> +
> +	clk_disable_unprepare(mxs_phy->clk);
> +}
> +
> +static int mxs_phy_on_connect(struct usb_phy *phy, int port)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	dev_dbg(phy->dev, "Connect on port %d\n", port);
> +
> +	if (mxs_phy->connected)
> +		return 0;
I'll have to remove all connected checking. When hcd driver is removed,
it won't call notify_disconnect. It corrupt the "connected" state. so
I have to remove the checking.

Thanks
Richard
> +	mxs_phy_hw_init(to_mxs_phy(phy));
> +	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +			phy->io_priv + HW_USBPHY_CTRL_SET);
> +	mxs_phy->connected = 1;
> +
> +	return 0;
> +}
> +
> +static int mxs_phy_on_disconnect(struct usb_phy *phy, int port)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	dev_dbg(phy->dev, "Disconnect on port %d\n", port);
> +
> +	if (!mxs_phy->connected)
> +		return 0;
> +	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +			phy->io_priv + HW_USBPHY_CTRL_CLR);
> +	mxs_phy->connected = 0;
> +
> +	return 0;
> +}
> +
> +static int mxs_phy_probe(struct platform_device *pdev)
> +{
> +	struct resource *res;
> +	void __iomem *base;
> +	struct clk *clk;
> +	struct mxs_phy *mxs_phy;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	if (!res) {
> +		dev_err(&pdev->dev, "can't get device resources\n");
> +		return -ENOENT;
> +	}
> +
> +	base = devm_request_and_ioremap(&pdev->dev, res);
> +	if (!base)
> +		return -EBUSY;
> +
> +	clk = devm_clk_get(&pdev->dev, NULL);
> +	if (IS_ERR(clk)) {
> +		dev_err(&pdev->dev,
> +			"can't get the clock, err=%ld", PTR_ERR(clk));
> +		return PTR_ERR(clk);
> +	}
> +
> +	mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL);
> +	if (!mxs_phy) {
> +		dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n");
> +		return -ENOMEM;
> +	}
> +
> +	mxs_phy->phy.io_priv		= base;
> +	mxs_phy->phy.dev		= &pdev->dev;
> +	mxs_phy->phy.label		= DRIVER_NAME;
> +	mxs_phy->phy.init		= mxs_phy_init;
> +	mxs_phy->phy.shutdown		= mxs_phy_shutdown;
> +	mxs_phy->phy.notify_connect	= mxs_phy_on_connect;
> +	mxs_phy->phy.notify_disconnect	= mxs_phy_on_disconnect;
> +
> +	ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier);
> +
> +	mxs_phy->clk = clk;
> +
> +	platform_set_drvdata(pdev, &mxs_phy->phy);
> +
> +	return 0;
> +}
> +
> +static int __devexit mxs_phy_remove(struct platform_device *pdev)
> +{
> +	platform_set_drvdata(pdev, NULL);
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id mxs_phy_dt_ids[] = {
> +	{ .compatible = "fsl,imx23-usbphy", },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
> +
> +static struct platform_driver mxs_phy_driver = {
> +	.probe = mxs_phy_probe,
> +	.remove = __devexit_p(mxs_phy_remove),
> +	.driver = {
> +		.name = DRIVER_NAME,
> +		.owner	= THIS_MODULE,
> +		.of_match_table = mxs_phy_dt_ids,
> +	 },
> +};
> +
> +static int __init mxs_phy_module_init(void)
> +{
> +	return platform_driver_register(&mxs_phy_driver);
> +}
> +postcore_initcall(mxs_phy_module_init);
> +
> +static void __exit mxs_phy_module_exit(void)
> +{
> +	platform_driver_unregister(&mxs_phy_driver);
> +}
> +module_exit(mxs_phy_module_exit);
> +
> +MODULE_ALIAS("platform:mxs-usb-phy");
> +MODULE_AUTHOR("Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>");
> +MODULE_AUTHOR("Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>");
> +MODULE_DESCRIPTION("Freescale MXS USB PHY driver");
> +MODULE_LICENSE("GPL");
> -- 
> 1.7.9.5
> 

[PATCH v7 13/14] usb: otg: add basic mxs phy driver support

[Richard Zhao]

On Mon, Jun 25, 2012 at 02:56:30PM +0800, Richard Zhao wrote:
> mxs phy is used in Freescale i.MX SoCs, for example
> imx23, imx28, imx6Q. This patch adds the basic host
> support.
> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Peter Chen <peter.chen@freescale.com>
> Acked-by: Felipe Balbi <balbi@ti.com>
> Tested-by: Subodh Nijsure <snijsure@grid-net.com>
> ---
>  Documentation/devicetree/bindings/usb/mxs-phy.txt |   13 ++
>  drivers/usb/otg/Kconfig                           |    9 +
>  drivers/usb/otg/Makefile                          |    1 +
>  drivers/usb/otg/mxs-phy.c                         |  197 +++++++++++++++++++++
>  4 files changed, 220 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/mxs-phy.txt
>  create mode 100644 drivers/usb/otg/mxs-phy.c
> 
> diff --git a/Documentation/devicetree/bindings/usb/mxs-phy.txt b/Documentation/devicetree/bindings/usb/mxs-phy.txt
> new file mode 100644
> index 0000000..5835b27
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/mxs-phy.txt
> @@ -0,0 +1,13 @@
> +* Freescale MXS USB Phy Device
> +
> +Required properties:
> +- compatible: Should be "fsl,imx23-usbphy"
> +- reg: Should contain registers location and length
> +- interrupts: Should contain phy interrupt
> +
> +Example:
> +usbphy1: usbphy at 020c9000 {
> +	compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";
> +	reg = <0x020c9000 0x1000>;
> +	interrupts = <0 44 0x04>;
> +};
> diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
> index 5c87db0..669eb32 100644
> --- a/drivers/usb/otg/Kconfig
> +++ b/drivers/usb/otg/Kconfig
> @@ -116,6 +116,15 @@ config FSL_USB2_OTG
>  	help
>  	  Enable this to support Freescale USB OTG transceiver.
>  
> +config USB_MXS_PHY
> +	tristate "Freescale MXS USB PHY support"
> +	select STMP_DEVICE
> +	select USB_OTG_UTILS
> +	help
> +	  Enable this to support the Freescale MXS USB PHY.
> +
> +	  MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x.
> +
>  config USB_MV_OTG
>  	tristate "Marvell USB OTG support"
>  	depends on USB_EHCI_MV && USB_MV_UDC && USB_SUSPEND
> diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
> index 41aa509..a844b8d 100644
> --- a/drivers/usb/otg/Makefile
> +++ b/drivers/usb/otg/Makefile
> @@ -20,4 +20,5 @@ obj-$(CONFIG_USB_MSM_OTG)	+= msm_otg.o
>  obj-$(CONFIG_AB8500_USB)	+= ab8500-usb.o
>  fsl_usb2_otg-objs		:= fsl_otg.o otg_fsm.o
>  obj-$(CONFIG_FSL_USB2_OTG)	+= fsl_usb2_otg.o
> +obj-$(CONFIG_USB_MXS_PHY)	+= mxs-phy.o
>  obj-$(CONFIG_USB_MV_OTG)	+= mv_otg.o
> diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c
> new file mode 100644
> index 0000000..d64c1fe
> --- /dev/null
> +++ b/drivers/usb/otg/mxs-phy.c
> @@ -0,0 +1,197 @@
> +/*
> + * Copyright 2012 Freescale Semiconductor, Inc.
> + * Copyright (C) 2012 Marek Vasut <marex@denx.de>
> + * on behalf of DENX Software Engineering GmbH
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +#include <linux/module.h>
> +#include <linux/kernel.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/usb/otg.h>
> +#include <linux/stmp_device.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/io.h>
> +
> +#define DRIVER_NAME "mxs_phy"
> +
> +#define HW_USBPHY_PWD				0x00
> +#define HW_USBPHY_CTRL				0x30
> +#define HW_USBPHY_CTRL_SET			0x34
> +#define HW_USBPHY_CTRL_CLR			0x38
> +
> +#define BM_USBPHY_CTRL_SFTRST			BIT(31)
> +#define BM_USBPHY_CTRL_CLKGATE			BIT(30)
> +#define BM_USBPHY_CTRL_ENUTMILEVEL3		BIT(15)
> +#define BM_USBPHY_CTRL_ENUTMILEVEL2		BIT(14)
> +#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT	BIT(1)
> +
> +struct mxs_phy {
> +	struct usb_phy phy;
> +	struct clk *clk;
> +	int connected:1;
> +};
> +
> +#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
> +
> +static void mxs_phy_hw_init(struct mxs_phy *mxs_phy)
> +{
> +	void __iomem *base = mxs_phy->phy.io_priv;
> +
> +	stmp_reset_block(base + HW_USBPHY_CTRL);
> +
> +	/* Power up the PHY */
> +	writel_relaxed(0, base + HW_USBPHY_PWD);
> +
> +	/* enable FS/LS device */
> +	writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 |
> +			BM_USBPHY_CTRL_ENUTMILEVEL3,
> +			base + HW_USBPHY_CTRL_SET);
> +}
> +
> +static int mxs_phy_init(struct usb_phy *phy)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	clk_prepare_enable(mxs_phy->clk);
> +	mxs_phy_hw_init(mxs_phy);
> +
> +	return 0;
> +}
> +
> +static void mxs_phy_shutdown(struct usb_phy *phy)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
> +			phy->io_priv + HW_USBPHY_CTRL_SET);
> +
> +	clk_disable_unprepare(mxs_phy->clk);
> +}
> +
> +static int mxs_phy_on_connect(struct usb_phy *phy, int port)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	dev_dbg(phy->dev, "Connect on port %d\n", port);
> +
> +	if (mxs_phy->connected)
> +		return 0;
I'll have to remove all connected checking. When hcd driver is removed,
it won't call notify_disconnect. It corrupt the "connected" state. so
I have to remove the checking.

Thanks
Richard
> +	mxs_phy_hw_init(to_mxs_phy(phy));
> +	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +			phy->io_priv + HW_USBPHY_CTRL_SET);
> +	mxs_phy->connected = 1;
> +
> +	return 0;
> +}
> +
> +static int mxs_phy_on_disconnect(struct usb_phy *phy, int port)
> +{
> +	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
> +
> +	dev_dbg(phy->dev, "Disconnect on port %d\n", port);
> +
> +	if (!mxs_phy->connected)
> +		return 0;
> +	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +			phy->io_priv + HW_USBPHY_CTRL_CLR);
> +	mxs_phy->connected = 0;
> +
> +	return 0;
> +}
> +
> +static int mxs_phy_probe(struct platform_device *pdev)
> +{
> +	struct resource *res;
> +	void __iomem *base;
> +	struct clk *clk;
> +	struct mxs_phy *mxs_phy;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	if (!res) {
> +		dev_err(&pdev->dev, "can't get device resources\n");
> +		return -ENOENT;
> +	}
> +
> +	base = devm_request_and_ioremap(&pdev->dev, res);
> +	if (!base)
> +		return -EBUSY;
> +
> +	clk = devm_clk_get(&pdev->dev, NULL);
> +	if (IS_ERR(clk)) {
> +		dev_err(&pdev->dev,
> +			"can't get the clock, err=%ld", PTR_ERR(clk));
> +		return PTR_ERR(clk);
> +	}
> +
> +	mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL);
> +	if (!mxs_phy) {
> +		dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n");
> +		return -ENOMEM;
> +	}
> +
> +	mxs_phy->phy.io_priv		= base;
> +	mxs_phy->phy.dev		= &pdev->dev;
> +	mxs_phy->phy.label		= DRIVER_NAME;
> +	mxs_phy->phy.init		= mxs_phy_init;
> +	mxs_phy->phy.shutdown		= mxs_phy_shutdown;
> +	mxs_phy->phy.notify_connect	= mxs_phy_on_connect;
> +	mxs_phy->phy.notify_disconnect	= mxs_phy_on_disconnect;
> +
> +	ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier);
> +
> +	mxs_phy->clk = clk;
> +
> +	platform_set_drvdata(pdev, &mxs_phy->phy);
> +
> +	return 0;
> +}
> +
> +static int __devexit mxs_phy_remove(struct platform_device *pdev)
> +{
> +	platform_set_drvdata(pdev, NULL);
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id mxs_phy_dt_ids[] = {
> +	{ .compatible = "fsl,imx23-usbphy", },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
> +
> +static struct platform_driver mxs_phy_driver = {
> +	.probe = mxs_phy_probe,
> +	.remove = __devexit_p(mxs_phy_remove),
> +	.driver = {
> +		.name = DRIVER_NAME,
> +		.owner	= THIS_MODULE,
> +		.of_match_table = mxs_phy_dt_ids,
> +	 },
> +};
> +
> +static int __init mxs_phy_module_init(void)
> +{
> +	return platform_driver_register(&mxs_phy_driver);
> +}
> +postcore_initcall(mxs_phy_module_init);
> +
> +static void __exit mxs_phy_module_exit(void)
> +{
> +	platform_driver_unregister(&mxs_phy_driver);
> +}
> +module_exit(mxs_phy_module_exit);
> +
> +MODULE_ALIAS("platform:mxs-usb-phy");
> +MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
> +MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
> +MODULE_DESCRIPTION("Freescale MXS USB PHY driver");
> +MODULE_LICENSE("GPL");
> -- 
> 1.7.9.5
> 

Re: [PATCH v7 14/14] usb: chipidea: add imx platform driver

[Marc Kleine-Budde]

[-- Attachment #1: Type: text/plain, Size: 3012 bytes --]

On 06/27/2012 08:20 AM, Richard Zhao wrote:
> On Mon, Jun 25, 2012 at 12:33:58PM +0200, Marc Kleine-Budde wrote:
>> On 06/25/2012 08:56 AM, Richard Zhao wrote:
>>> This patch supports only the host-mode functionality so far.
>>>
>>> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
>>> Signed-off-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
>>> Cc: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
>>> Cc: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
>>> Cc: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
>>> Cc: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
>>> Tested-by: Subodh Nijsure <snijsure-4jo+YWezP1RWk0Htik3J/w@public.gmane.org>
>>> ---
>>>  .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
>>>  drivers/usb/chipidea/Makefile                      |    3 +
>>>  drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
>>>  3 files changed, 220 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>>>  create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
>>>
>>> diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>>> new file mode 100644
>>> index 0000000..8bcd071
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>>> @@ -0,0 +1,20 @@
>>> +* Freescale i.MX ci13xxx usb controllers
>>> +
>>> +Required properties:
>>> +- compatible: Should be "fsl,imx27-usb"
>>> +- reg: Should contain registers location and length
>>> +- interrupts: Should contain controller interrupt
>>> +
>>> +Optional properties:
>>> +- fsl,usbphy: phandler of usb phy that connects to the only one port
>>
>>> +- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
>>> +- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port
>>
>> These two properties are not implemented, are they?
>> vbus is handled via a fixed regulator.
> I forgot to update the doc.
>>
>> Further I'm looking into the phy and otg implementation. I think the
>> handling of the regulator should go into mxs-phy.c, not into the
>> ci13xxx_imx.c
> Normally, we don't put it in phy driver. For example, most host driver
> don't call phy drivers.

Yes, I've noticed that otg support is ... a bit messy in the linux
kernel. There are some drivers that implement a otg state machine.

However, I have the udc on mx28 somewhat working. It's still a hack
since I have to implement an otg driver for this, but the host part
doesn't do otg so far...and unplug is not detected correctly.

cheers, Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |


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[PATCH v7 14/14] usb: chipidea: add imx platform driver

[Marc Kleine-Budde]

On 06/27/2012 08:20 AM, Richard Zhao wrote:
> On Mon, Jun 25, 2012 at 12:33:58PM +0200, Marc Kleine-Budde wrote:
>> On 06/25/2012 08:56 AM, Richard Zhao wrote:
>>> This patch supports only the host-mode functionality so far.
>>>
>>> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
>>> Signed-off-by: Marek Vasut <marex@denx.de>
>>> Cc: Peter Chen <peter.chen@freescale.com>
>>> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
>>> Cc: Felipe Balbi <balbi@ti.com>
>>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>>> Tested-by: Subodh Nijsure <snijsure@grid-net.com>
>>> ---
>>>  .../devicetree/bindings/usb/ci13xxx-imx.txt        |   20 ++
>>>  drivers/usb/chipidea/Makefile                      |    3 +
>>>  drivers/usb/chipidea/ci13xxx_imx.c                 |  197 ++++++++++++++++++++
>>>  3 files changed, 220 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>>>  create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c
>>>
>>> diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>>> new file mode 100644
>>> index 0000000..8bcd071
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
>>> @@ -0,0 +1,20 @@
>>> +* Freescale i.MX ci13xxx usb controllers
>>> +
>>> +Required properties:
>>> +- compatible: Should be "fsl,imx27-usb"
>>> +- reg: Should contain registers location and length
>>> +- interrupts: Should contain controller interrupt
>>> +
>>> +Optional properties:
>>> +- fsl,usbphy: phandler of usb phy that connects to the only one port
>>
>>> +- fsl,hub-reset-gpios: gpio used to reset on-board usb hub
>>> +- fsl,vbus-power-gpios: gpio used to set vbus power of the only one port
>>
>> These two properties are not implemented, are they?
>> vbus is handled via a fixed regulator.
> I forgot to update the doc.
>>
>> Further I'm looking into the phy and otg implementation. I think the
>> handling of the regulator should go into mxs-phy.c, not into the
>> ci13xxx_imx.c
> Normally, we don't put it in phy driver. For example, most host driver
> don't call phy drivers.

Yes, I've noticed that otg support is ... a bit messy in the linux
kernel. There are some drivers that implement a otg state machine.

However, I have the udc on mx28 somewhat working. It's still a hack
since I have to implement an otg driver for this, but the host part
doesn't do otg so far...and unplug is not detected correctly.

cheers, Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |

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Re: [PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marek Vasut]

Dear Richard Zhao,

> On Mon, Jun 25, 2012 at 12:17:13PM +0200, Marc Kleine-Budde wrote:
> > On 06/25/2012 12:03 PM, Richard Zhao wrote:
> > > Could you use my USB test branch?
> > 
> > Same result:
> > 
> > ci_hdrc ci_hdrc.0: remove, state 1
> > usb usb1: USB disconnect, device number 1
> > ci_hdrc ci_hdrc.0: USB bus 1 deregistered
> > Unable to handle kernel NULL pointer dereference at virtual address
> > 0000006c pgd = c6ba4000
> > [0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
> > Internal error: Oops: 17 [#1] PREEMPT ARM
> > Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
> > CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)

Dumb question -- you use the same base revision of kernel, right?

> 
> Thanks
> Richard
> 
> > Marc

Best regards,
Marek Vasut
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[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marek Vasut]

Dear Richard Zhao,

> On Mon, Jun 25, 2012 at 12:17:13PM +0200, Marc Kleine-Budde wrote:
> > On 06/25/2012 12:03 PM, Richard Zhao wrote:
> > > Could you use my USB test branch?
> > 
> > Same result:
> > 
> > ci_hdrc ci_hdrc.0: remove, state 1
> > usb usb1: USB disconnect, device number 1
> > ci_hdrc ci_hdrc.0: USB bus 1 deregistered
> > Unable to handle kernel NULL pointer dereference at virtual address
> > 0000006c pgd = c6ba4000
> > [0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
> > Internal error: Oops: 17 [#1] PREEMPT ARM
> > Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
> > CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)

Dumb question -- you use the same base revision of kernel, right?

> 
> Thanks
> Richard
> 
> > Marc

Best regards,
Marek Vasut

Re: [PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marc Kleine-Budde]

[-- Attachment #1: Type: text/plain, Size: 1422 bytes --]

On 06/27/2012 01:49 PM, Marek Vasut wrote:
> Dear Richard Zhao,
> 
>> On Mon, Jun 25, 2012 at 12:17:13PM +0200, Marc Kleine-Budde wrote:
>>> On 06/25/2012 12:03 PM, Richard Zhao wrote:
>>>> Could you use my USB test branch?
>>>
>>> Same result:
>>>
>>> ci_hdrc ci_hdrc.0: remove, state 1
>>> usb usb1: USB disconnect, device number 1
>>> ci_hdrc ci_hdrc.0: USB bus 1 deregistered
>>> Unable to handle kernel NULL pointer dereference at virtual address
>>> 0000006c pgd = c6ba4000
>>> [0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
>>> Internal error: Oops: 17 [#1] PREEMPT ARM
>>> Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
>>> CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)
> 
> Dumb question -- you use the same base revision of kernel, right?

Yes, I used v3.5-rc4 as baseline, add some mx28 specific patches (nand,
etc...), then I merged in Richard's use tree. In the above oops, as the
asked, the USB test branch.

In original oops I used
https://github.com/riczhao/kernel-imx/commits/topics/usb-driver

Maybe it's some other part of the system that confuses the ida_* stuff.

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |


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[PATCH v7 08/14] USB: Chipidea: add ci13xxx device id management

[Marc Kleine-Budde]

On 06/27/2012 01:49 PM, Marek Vasut wrote:
> Dear Richard Zhao,
> 
>> On Mon, Jun 25, 2012 at 12:17:13PM +0200, Marc Kleine-Budde wrote:
>>> On 06/25/2012 12:03 PM, Richard Zhao wrote:
>>>> Could you use my USB test branch?
>>>
>>> Same result:
>>>
>>> ci_hdrc ci_hdrc.0: remove, state 1
>>> usb usb1: USB disconnect, device number 1
>>> ci_hdrc ci_hdrc.0: USB bus 1 deregistered
>>> Unable to handle kernel NULL pointer dereference at virtual address
>>> 0000006c pgd = c6ba4000
>>> [0000006c] *pgd=46a68831, *pte=00000000, *ppte=00000000
>>> Internal error: Oops: 17 [#1] PREEMPT ARM
>>> Modules linked in: ci13xxx_imx(-) ci_hdrc imx_usbmisc
>>> CPU: 0    Not tainted  (3.5.0-rc4-00058-g01710ef #85)
> 
> Dumb question -- you use the same base revision of kernel, right?

Yes, I used v3.5-rc4 as baseline, add some mx28 specific patches (nand,
etc...), then I merged in Richard's use tree. In the above oops, as the
asked, the USB test branch.

In original oops I used
https://github.com/riczhao/kernel-imx/commits/topics/usb-driver

Maybe it's some other part of the system that confuses the ida_* stuff.

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |

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Re: [PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Marc Kleine-Budde]

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On 06/25/2012 08:56 AM, Richard Zhao wrote:
> struct ci13xxx represent the controller, which may be device or host,
> so name its variables as ci.
> 
> Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

nitpick: search-replace problem

> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1,5 +1,5 @@
>  /*
> - * udc.c - ChipIdea UDC driver
> + * ci.c - ChipIdea UDC driver
      ^^^^

:)

>   *
>   * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
>   *
> @@ -66,11 +66,11 @@ static inline int hw_ep_bit(int num, int dir)
>  	return num + (dir ? 16 : 0);
>  }
>  

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |


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[PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Marc Kleine-Budde]

On 06/25/2012 08:56 AM, Richard Zhao wrote:
> struct ci13xxx represent the controller, which may be device or host,
> so name its variables as ci.
> 
> Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> Reviewed-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

nitpick: search-replace problem

> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1,5 +1,5 @@
>  /*
> - * udc.c - ChipIdea UDC driver
> + * ci.c - ChipIdea UDC driver
      ^^^^

:)

>   *
>   * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
>   *
> @@ -66,11 +66,11 @@ static inline int hw_ep_bit(int num, int dir)
>  	return num + (dir ? 16 : 0);
>  }
>  

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |

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Re: [PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Richard Zhao]

On Wed, Jun 27, 2012 at 02:42:31PM +0200, Marc Kleine-Budde wrote:
> On 06/25/2012 08:56 AM, Richard Zhao wrote:
> > struct ci13xxx represent the controller, which may be device or host,
> > so name its variables as ci.
> > 
> > Signed-off-by: Richard Zhao <richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> > Reviewed-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
> > Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> 
> nitpick: search-replace problem
> 
> > --- a/drivers/usb/chipidea/udc.c
> > +++ b/drivers/usb/chipidea/udc.c
> > @@ -1,5 +1,5 @@
> >  /*
> > - * udc.c - ChipIdea UDC driver
> > + * ci.c - ChipIdea UDC driver
>       ^^^^
Nice catch!

Thanks
Richard
> 
> :)
> 
> >   *
> >   * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
> >   *
> > @@ -66,11 +66,11 @@ static inline int hw_ep_bit(int num, int dir)
> >  	return num + (dir ? 16 : 0);
> >  }
> >  
> 
> Marc
> 
> -- 
> Pengutronix e.K.                  | Marc Kleine-Budde           |
> Industrial Linux Solutions        | Phone: +49-231-2826-924     |
> Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |
> 

[PATCH v7 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci

[Richard Zhao]

On Wed, Jun 27, 2012 at 02:42:31PM +0200, Marc Kleine-Budde wrote:
> On 06/25/2012 08:56 AM, Richard Zhao wrote:
> > struct ci13xxx represent the controller, which may be device or host,
> > so name its variables as ci.
> > 
> > Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
> > Reviewed-by: Felipe Balbi <balbi@ti.com>
> > Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> 
> nitpick: search-replace problem
> 
> > --- a/drivers/usb/chipidea/udc.c
> > +++ b/drivers/usb/chipidea/udc.c
> > @@ -1,5 +1,5 @@
> >  /*
> > - * udc.c - ChipIdea UDC driver
> > + * ci.c - ChipIdea UDC driver
>       ^^^^
Nice catch!

Thanks
Richard
> 
> :)
> 
> >   *
> >   * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
> >   *
> > @@ -66,11 +66,11 @@ static inline int hw_ep_bit(int num, int dir)
> >  	return num + (dir ? 16 : 0);
> >  }
> >  
> 
> Marc
> 
> -- 
> Pengutronix e.K.                  | Marc Kleine-Budde           |
> Industrial Linux Solutions        | Phone: +49-231-2826-924     |
> Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |
>