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* [PATCH v3 00/10] Add DT support for ohci-da8xx
@ 2016-11-07 20:39 Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 01/10] USB: ohci: da8xx: use ohci priv data instead of globals Axel Haslam
                   ` (10 more replies)
  0 siblings, 11 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

The purpose of this patch series is to add DT support for the davinci
ohci driver.

To be able to use device tree to probe the driver, we need to remove
the platform callbacks that are handling vbus and over current.

The first four patches prepare the stage by allowing to use a regulator
instead of the callbacks.

The next three patches convert the callback users to use a regulator
instead and then remove the callbacks from the driver and platform code.

Finally, we add device tree bindings and support in the driver.

DEPENDENCIES:
This series has depends on some patches currently under review
but mostly accepted:
1. [PATCH 0/3] fix ohci phy name [1] (accepted)
2. [PATCH/RFC v2 0/3] regulator: handling of error conditions for usb drivers [2] (accepted)
3. [PATCH] gpio: davinci: Use unique labels for each gpio chip [3] (review pending)

Also the current davinci baranches soon to be pulled to linux-next:
davinci-for-v4.10/soc
davinci-for-v4.10/dt
davinci-for-v4.10/defconfig
davinci-for-v4.10/cleanup

A branch with all the dependencies can be found here [4].

Changes form v2->v3
* drop patches that have been integrated to arch/arm
* drop regulator patches which will be integrated through regulator tree
* use of the accepted regulator API to get over current status
* better patch separation with the use of wrappers

Changes from v1->v2
* Rebased and added patch to make ohci a separate driver
* Use a regulator instead of handling Gpios (David Lechner)
* Add an over current mode to regulator framework
* Fixed regulator is able to register for and over current irq
* Added patch by Alexandre to remove build warnings
* Moved global variables into private hcd structure.

[1] https://lkml.org/lkml/2016/11/2/208
[2] https://lkml.org/lkml/2016/11/3/188
[3] http://www.spinics.net/lists/linux-gpio/msg17710.html
[4] https://github.com/axelhaslamx/linux-axel/commits/ohci-da8xx-dt-v3

Axel Haslam (10):
  USB: ohci: da8xx: use ohci priv data instead of globals
  USB: ohci: da8xx: Prepare to remove platform callbacks
  USB: ohci: da8xx: Allow a regulator to handle VBUS
  ARM: davinci: da830: Handle vbus with a regulator
  ARM: davinci: hawk: Remove vbus and over current gpios
  USB: ohci: da8xx: Remove ohci platform callbacks
  USB: ohci: da8xx: use a flag instead of mask for ocic
  USB: ohci: da8xx: Add devicetree bindings
  USB: ohci: da8xx: Allow probing from DT
  ARM: dts: da850: add usb device node

 .../devicetree/bindings/usb/ohci-da8xx.txt         |  39 ++++
 arch/arm/boot/dts/da850-lcdk.dts                   |   8 +
 arch/arm/boot/dts/da850.dtsi                       |   8 +
 arch/arm/mach-davinci/board-da830-evm.c            | 108 ++++-----
 arch/arm/mach-davinci/board-omapl138-hawk.c        |  99 +-------
 arch/arm/mach-davinci/include/mach/da8xx.h         |   2 +-
 arch/arm/mach-davinci/usb-da8xx.c                  |   3 +-
 drivers/usb/host/ohci-da8xx.c                      | 253 +++++++++++++++------
 include/linux/platform_data/usb-davinci.h          |  20 --
 9 files changed, 283 insertions(+), 257 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/ohci-da8xx.txt

-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 01/10] USB: ohci: da8xx: use ohci priv data instead of globals
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 02/10] USB: ohci: da8xx: Prepare to remove platform callbacks Axel Haslam
                   ` (9 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

Instead of global variables, use the extra_priv_size of
the ohci driver.

We cannot yet move the ocic mask because this is used on
the interrupt handler which is registerded through platform
data and does not have an hcd pointer. This will be moved
on a later patch.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 drivers/usb/host/ohci-da8xx.c | 72 +++++++++++++++++++++++++------------------
 1 file changed, 42 insertions(+), 30 deletions(-)

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 429d58b..0442c64 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -35,43 +35,49 @@ static int (*orig_ohci_hub_control)(struct usb_hcd  *hcd, u16 typeReq,
 			u16 wValue, u16 wIndex, char *buf, u16 wLength);
 static int (*orig_ohci_hub_status_data)(struct usb_hcd *hcd, char *buf);
 
-static struct clk *usb11_clk;
-static struct phy *usb11_phy;
+struct da8xx_ohci_hcd {
+	struct clk *usb11_clk;
+	struct phy *usb11_phy;
+};
+#define to_da8xx_ohci(hcd) (struct da8xx_ohci_hcd *)(hcd_to_ohci(hcd)->priv)
 
 /* Over-current indicator change bitmask */
 static volatile u16 ocic_mask;
 
-static int ohci_da8xx_enable(void)
+static int ohci_da8xx_enable(struct usb_hcd *hcd)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	int ret;
 
-	ret = clk_prepare_enable(usb11_clk);
+	ret = clk_prepare_enable(da8xx_ohci->usb11_clk);
 	if (ret)
 		return ret;
 
-	ret = phy_init(usb11_phy);
+	ret = phy_init(da8xx_ohci->usb11_phy);
 	if (ret)
 		goto err_phy_init;
 
-	ret = phy_power_on(usb11_phy);
+	ret = phy_power_on(da8xx_ohci->usb11_phy);
 	if (ret)
 		goto err_phy_power_on;
 
 	return 0;
 
 err_phy_power_on:
-	phy_exit(usb11_phy);
+	phy_exit(da8xx_ohci->usb11_phy);
 err_phy_init:
-	clk_disable_unprepare(usb11_clk);
+	clk_disable_unprepare(da8xx_ohci->usb11_clk);
 
 	return ret;
 }
 
-static void ohci_da8xx_disable(void)
+static void ohci_da8xx_disable(struct usb_hcd *hcd)
 {
-	phy_power_off(usb11_phy);
-	phy_exit(usb11_phy);
-	clk_disable_unprepare(usb11_clk);
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
+
+	phy_power_off(da8xx_ohci->usb11_phy);
+	phy_exit(da8xx_ohci->usb11_phy);
+	clk_disable_unprepare(da8xx_ohci->usb11_clk);
 }
 
 /*
@@ -97,7 +103,7 @@ static int ohci_da8xx_reset(struct usb_hcd *hcd)
 
 	dev_dbg(dev, "starting USB controller\n");
 
-	result = ohci_da8xx_enable();
+	result = ohci_da8xx_enable(hcd);
 	if (result < 0)
 		return result;
 
@@ -109,7 +115,7 @@ static int ohci_da8xx_reset(struct usb_hcd *hcd)
 
 	result = ohci_setup(hcd);
 	if (result < 0) {
-		ohci_da8xx_disable();
+		ohci_da8xx_disable(hcd);
 		return result;
 	}
 
@@ -231,6 +237,7 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 static int ohci_da8xx_probe(struct platform_device *pdev)
 {
 	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(&pdev->dev);
+	struct da8xx_ohci_hcd *da8xx_ohci;
 	struct usb_hcd	*hcd;
 	struct resource *mem;
 	int error, irq;
@@ -238,25 +245,29 @@ static int ohci_da8xx_probe(struct platform_device *pdev)
 	if (hub == NULL)
 		return -ENODEV;
 
-	usb11_clk = devm_clk_get(&pdev->dev, "usb11");
-	if (IS_ERR(usb11_clk)) {
-		if (PTR_ERR(usb11_clk) != -EPROBE_DEFER)
+	hcd = usb_create_hcd(&ohci_da8xx_hc_driver, &pdev->dev,
+				dev_name(&pdev->dev));
+	if (!hcd)
+		return -ENOMEM;
+
+	da8xx_ohci = to_da8xx_ohci(hcd);
+
+	da8xx_ohci->usb11_clk = devm_clk_get(&pdev->dev, "usb11");
+	if (IS_ERR(da8xx_ohci->usb11_clk)) {
+		if (PTR_ERR(da8xx_ohci->usb11_clk) != -EPROBE_DEFER)
 			dev_err(&pdev->dev, "Failed to get clock.\n");
-		return PTR_ERR(usb11_clk);
+		error = PTR_ERR(da8xx_ohci->usb11_clk);
+		goto err;
 	}
 
-	usb11_phy = devm_phy_get(&pdev->dev, "usb-phy");
-	if (IS_ERR(usb11_phy)) {
-		if (PTR_ERR(usb11_phy) != -EPROBE_DEFER)
+	da8xx_ohci->usb11_phy = devm_phy_get(&pdev->dev, "usb-phy");
+	if (IS_ERR(da8xx_ohci->usb11_phy)) {
+		if (PTR_ERR(da8xx_ohci->usb11_phy) != -EPROBE_DEFER)
 			dev_err(&pdev->dev, "Failed to get phy.\n");
-		return PTR_ERR(usb11_phy);
+		error = PTR_ERR(da8xx_ohci->usb11_phy);
+		goto err;
 	}
 
-	hcd = usb_create_hcd(&ohci_da8xx_hc_driver, &pdev->dev,
-				dev_name(&pdev->dev));
-	if (!hcd)
-		return -ENOMEM;
-
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	hcd->regs = devm_ioremap_resource(&pdev->dev, mem);
 	if (IS_ERR(hcd->regs)) {
@@ -321,7 +332,7 @@ static int ohci_da8xx_suspend(struct platform_device *pdev,
 	if (ret)
 		return ret;
 
-	ohci_da8xx_disable();
+	ohci_da8xx_disable(hcd);
 	hcd->state = HC_STATE_SUSPENDED;
 
 	return ret;
@@ -337,7 +348,7 @@ static int ohci_da8xx_resume(struct platform_device *dev)
 		msleep(5);
 	ohci->next_statechange = jiffies;
 
-	ret = ohci_da8xx_enable();
+	ret = ohci_da8xx_enable(hcd);
 	if (ret)
 		return ret;
 
@@ -349,7 +360,8 @@ static int ohci_da8xx_resume(struct platform_device *dev)
 #endif
 
 static const struct ohci_driver_overrides da8xx_overrides __initconst = {
-	.reset		= ohci_da8xx_reset,
+	.reset		 = ohci_da8xx_reset,
+	.extra_priv_size = sizeof(struct da8xx_ohci_hcd),
 };
 
 /*
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 02/10] USB: ohci: da8xx: Prepare to remove platform callbacks
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 01/10] USB: ohci: da8xx: use ohci priv data instead of globals Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 03/10] USB: ohci: da8xx: Allow a regulator to handle VBUS Axel Haslam
                   ` (8 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

Wrap the platform data callbacks into separate functions.
This will help migrate to using a regulator by providing a well defined
place to implement the regulator functions while the platform calls
are still in place and users have not been converted.

The platform callbacks will be removed on a following patch.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 drivers/usb/host/ohci-da8xx.c | 125 ++++++++++++++++++++++++++++++++++--------
 1 file changed, 102 insertions(+), 23 deletions(-)

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 0442c64..9ed43c7 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -80,6 +80,72 @@ static void ohci_da8xx_disable(struct usb_hcd *hcd)
 	clk_disable_unprepare(da8xx_ohci->usb11_clk);
 }
 
+static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->set_power)
+		return hub->set_power(1, on);
+
+	return 0;
+}
+
+static int ohci_da8xx_get_power(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->get_power)
+		return hub->get_power(1);
+
+	return 1;
+}
+
+static int ohci_da8xx_get_oci(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->get_oci)
+		return hub->get_oci(1);
+
+	return 0;
+}
+
+static int ohci_da8xx_has_set_power(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->set_power)
+		return 1;
+
+	return 0;
+}
+
+static int ohci_da8xx_has_oci(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->get_oci)
+		return 1;
+
+	return 0;
+}
+
+static int ohci_da8xx_has_potpgt(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->potpgt)
+		return 1;
+
+	return 0;
+}
+
 /*
  * Handle the port over-current indicator change.
  */
@@ -93,6 +159,26 @@ static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub,
 		hub->set_power(port, 0);
 }
 
+static int ohci_da8xx_register_notify(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->ocic_notify)
+		return hub->ocic_notify(ohci_da8xx_ocic_handler);
+
+	return 0;
+}
+
+static void ohci_da8xx_unregister_notify(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+
+	if (hub && hub->ocic_notify)
+		hub->ocic_notify(NULL);
+}
+
 static int ohci_da8xx_reset(struct usb_hcd *hcd)
 {
 	struct device *dev		= hcd->self.controller;
@@ -126,16 +212,18 @@ static int ohci_da8xx_reset(struct usb_hcd *hcd)
 	 * the correct hub descriptor...
 	 */
 	rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
-	if (hub->set_power) {
+	if (ohci_da8xx_has_set_power(hcd)) {
 		rh_a &= ~RH_A_NPS;
 		rh_a |=  RH_A_PSM;
 	}
-	if (hub->get_oci) {
+	if (ohci_da8xx_has_oci(hcd)) {
 		rh_a &= ~RH_A_NOCP;
 		rh_a |=  RH_A_OCPM;
 	}
-	rh_a &= ~RH_A_POTPGT;
-	rh_a |= hub->potpgt << 24;
+	if (ohci_da8xx_has_potpgt(hcd)) {
+		rh_a &= ~RH_A_POTPGT;
+		rh_a |= hub->potpgt << 24;
+	}
 	ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
 
 	return result;
@@ -168,7 +256,6 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 				  u16 wIndex, char *buf, u16 wLength)
 {
 	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 	int temp;
 
 	switch (typeReq) {
@@ -182,11 +269,11 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 		temp = roothub_portstatus(hcd_to_ohci(hcd), wIndex - 1);
 
 		/* The port power status (PPS) bit defaults to 1 */
-		if (hub->get_power && hub->get_power(wIndex) == 0)
+		if (!ohci_da8xx_get_power(hcd))
 			temp &= ~RH_PS_PPS;
 
 		/* The port over-current indicator (POCI) bit is always 0 */
-		if (hub->get_oci && hub->get_oci(wIndex) > 0)
+		if (ohci_da8xx_get_oci(hcd))
 			temp |=  RH_PS_POCI;
 
 		/* The over-current indicator change (OCIC) bit is 0 too */
@@ -211,10 +298,7 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 			dev_dbg(dev, "%sPortFeature(%u): %s\n",
 				temp ? "Set" : "Clear", wIndex, "POWER");
 
-			if (!hub->set_power)
-				return -EPIPE;
-
-			return hub->set_power(wIndex, temp) ? -EPIPE : 0;
+			return ohci_da8xx_set_power(hcd, temp) ? -EPIPE : 0;
 		case USB_PORT_FEAT_C_OVER_CURRENT:
 			dev_dbg(dev, "%sPortFeature(%u): %s\n",
 				temp ? "Set" : "Clear", wIndex,
@@ -236,15 +320,10 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 
 static int ohci_da8xx_probe(struct platform_device *pdev)
 {
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(&pdev->dev);
 	struct da8xx_ohci_hcd *da8xx_ohci;
 	struct usb_hcd	*hcd;
 	struct resource *mem;
 	int error, irq;
-
-	if (hub == NULL)
-		return -ENODEV;
-
 	hcd = usb_create_hcd(&ohci_da8xx_hc_driver, &pdev->dev,
 				dev_name(&pdev->dev));
 	if (!hcd)
@@ -290,12 +369,13 @@ static int ohci_da8xx_probe(struct platform_device *pdev)
 
 	device_wakeup_enable(hcd->self.controller);
 
-	if (hub->ocic_notify) {
-		error = hub->ocic_notify(ohci_da8xx_ocic_handler);
-		if (!error)
-			return 0;
-	}
+	error = ohci_da8xx_register_notify(hcd);
+	if (error)
+		goto err_remove_hcd;
+
+	return 0;
 
+err_remove_hcd:
 	usb_remove_hcd(hcd);
 err:
 	usb_put_hcd(hcd);
@@ -305,9 +385,8 @@ static int ohci_da8xx_probe(struct platform_device *pdev)
 static int ohci_da8xx_remove(struct platform_device *pdev)
 {
 	struct usb_hcd	*hcd = platform_get_drvdata(pdev);
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(&pdev->dev);
 
-	hub->ocic_notify(NULL);
+	ohci_da8xx_unregister_notify(hcd);
 	usb_remove_hcd(hcd);
 	usb_put_hcd(hcd);
 
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 03/10] USB: ohci: da8xx: Allow a regulator to handle VBUS
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 01/10] USB: ohci: da8xx: use ohci priv data instead of globals Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 02/10] USB: ohci: da8xx: Prepare to remove platform callbacks Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 04/10] ARM: davinci: da830: Handle vbus with a regulator Axel Haslam
                   ` (7 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

We need to remove the platform callbacks to be able to probe
the driver using device tree. Using a regulator to handle VBUS will
eliminate the need for these callbacks once all users are converted
to use a regulator.

The regulator equivalents to the platform callbacks are:
    set_power   ->  regulator_enable/regulator_disable
    get_power   ->  regulator_is_enabled
    get_oci     ->  regulator_get_error_flags
    ocic_notify ->  regulator event notification

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 drivers/usb/host/ohci-da8xx.c | 97 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 95 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 9ed43c7..0a4b885 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -20,6 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_data/usb-davinci.h>
+#include <linux/regulator/consumer.h>
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
 #include <asm/unaligned.h>
@@ -36,8 +37,12 @@ static int (*orig_ohci_hub_control)(struct usb_hcd  *hcd, u16 typeReq,
 static int (*orig_ohci_hub_status_data)(struct usb_hcd *hcd, char *buf);
 
 struct da8xx_ohci_hcd {
+	struct usb_hcd *hcd;
 	struct clk *usb11_clk;
 	struct phy *usb11_phy;
+	struct regulator *vbus_reg;
+	struct notifier_block nb;
+	unsigned int is_powered;
 };
 #define to_da8xx_ohci(hcd) (struct da8xx_ohci_hcd *)(hcd_to_ohci(hcd)->priv)
 
@@ -82,56 +87,105 @@ static void ohci_da8xx_disable(struct usb_hcd *hcd)
 
 static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
 	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+	int ret;
 
 	if (hub && hub->set_power)
 		return hub->set_power(1, on);
 
+	if (!da8xx_ohci->vbus_reg)
+		return 0;
+
+	if (on && !da8xx_ohci->is_powered) {
+		ret = regulator_enable(da8xx_ohci->vbus_reg);
+		if (ret) {
+			dev_err(dev, "Fail to enable regulator: %d\n", ret);
+			return ret;
+		}
+		da8xx_ohci->is_powered = 1;
+
+	} else if (!on && da8xx_ohci->is_powered) {
+		ret = regulator_disable(da8xx_ohci->vbus_reg);
+		if (ret) {
+			dev_err(dev, "Fail to disable regulator: %d\n", ret);
+			return ret;
+		}
+		da8xx_ohci->is_powered = 0;
+	}
+
 	return 0;
 }
 
 static int ohci_da8xx_get_power(struct usb_hcd *hcd)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
 	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 
 	if (hub && hub->get_power)
 		return hub->get_power(1);
 
+	if (da8xx_ohci->vbus_reg)
+		return regulator_is_enabled(da8xx_ohci->vbus_reg);
+
 	return 1;
 }
 
 static int ohci_da8xx_get_oci(struct usb_hcd *hcd)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
 	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+	unsigned int flags;
+	int ret;
 
 	if (hub && hub->get_oci)
 		return hub->get_oci(1);
 
+	if (!da8xx_ohci->vbus_reg)
+		return 0;
+
+	ret = regulator_get_error_flags(da8xx_ohci->vbus_reg, &flags);
+	if (ret) {
+		dev_err(dev, "could not get regulator error flags: %d\n", ret);
+		return ret;
+	}
+
+	if (flags && REGULATOR_ERROR_OVER_CURRENT)
+		return 1;
+
 	return 0;
 }
 
 static int ohci_da8xx_has_set_power(struct usb_hcd *hcd)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
 	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 
 	if (hub && hub->set_power)
 		return 1;
 
+	if (da8xx_ohci->vbus_reg)
+		return 1;
+
 	return 0;
 }
 
 static int ohci_da8xx_has_oci(struct usb_hcd *hcd)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
 	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 
 	if (hub && hub->get_oci)
 		return 1;
 
+	if (da8xx_ohci->vbus_reg)
+		return 1;
+
 	return 0;
 }
 
@@ -159,15 +213,41 @@ static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub,
 		hub->set_power(port, 0);
 }
 
+static int ohci_da8xx_regulator_event(struct notifier_block *nb,
+				unsigned long event, void *data)
+{
+	struct da8xx_ohci_hcd *da8xx_ohci =
+				container_of(nb, struct da8xx_ohci_hcd, nb);
+	struct device *dev = da8xx_ohci->hcd->self.controller;
+
+	if (event & REGULATOR_EVENT_OVER_CURRENT) {
+		dev_warn(dev, "over current event\n");
+		ocic_mask |= 1;
+		ohci_da8xx_set_power(da8xx_ohci->hcd, 0);
+	}
+
+	return 0;
+}
+
 static int ohci_da8xx_register_notify(struct usb_hcd *hcd)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
 	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
+	int ret = 0;
 
 	if (hub && hub->ocic_notify)
-		return hub->ocic_notify(ohci_da8xx_ocic_handler);
+		ret = hub->ocic_notify(ohci_da8xx_ocic_handler);
+	else if (da8xx_ohci->vbus_reg) {
+		da8xx_ohci->nb.notifier_call = ohci_da8xx_regulator_event;
+		ret = devm_regulator_register_notifier(da8xx_ohci->vbus_reg,
+						&da8xx_ohci->nb);
+	}
 
-	return 0;
+	if (ret)
+		dev_err(dev, "Failed to register notifier: %d\n", ret);
+
+	return ret;
 }
 
 static void ohci_da8xx_unregister_notify(struct usb_hcd *hcd)
@@ -330,6 +410,7 @@ static int ohci_da8xx_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	da8xx_ohci = to_da8xx_ohci(hcd);
+	da8xx_ohci->hcd = hcd;
 
 	da8xx_ohci->usb11_clk = devm_clk_get(&pdev->dev, "usb11");
 	if (IS_ERR(da8xx_ohci->usb11_clk)) {
@@ -347,6 +428,18 @@ static int ohci_da8xx_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+	da8xx_ohci->vbus_reg = devm_regulator_get_optional(&pdev->dev, "vbus");
+	if (IS_ERR(da8xx_ohci->vbus_reg)) {
+		error = PTR_ERR(da8xx_ohci->vbus_reg);
+		if (error == -ENODEV)
+			da8xx_ohci->vbus_reg = NULL;
+		else {
+			dev_err(&pdev->dev,
+				"Failed to get regulator: %d\n", error);
+			goto err;
+		}
+	}
+
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	hcd->regs = devm_ioremap_resource(&pdev->dev, mem);
 	if (IS_ERR(hcd->regs)) {
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 04/10] ARM: davinci: da830: Handle vbus with a regulator
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (2 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 03/10] USB: ohci: da8xx: Allow a regulator to handle VBUS Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 05/10] ARM: davinci: hawk: Remove vbus and over current gpios Axel Haslam
                   ` (6 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

The usb driver can now take a regulator instead of the platform
callbacks for vbus handling. Lets use a regulator so we can remove
the callbacks in a later patch.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 arch/arm/mach-davinci/board-da830-evm.c | 108 +++++++++++---------------------
 1 file changed, 38 insertions(+), 70 deletions(-)

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 5db0901..16a401a 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -14,6 +14,7 @@
 #include <linux/console.h>
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
+#include <linux/gpio/machine.h>
 #include <linux/platform_device.h>
 #include <linux/i2c.h>
 #include <linux/i2c/pcf857x.h>
@@ -28,6 +29,7 @@
 #include <linux/platform_data/spi-davinci.h>
 #include <linux/platform_data/usb-davinci.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/fixed.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -38,72 +40,48 @@
 #include <mach/da8xx.h>
 
 #define DA830_EVM_PHY_ID		""
-/*
- * USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4].
- */
-#define ON_BD_USB_DRV	GPIO_TO_PIN(1, 15)
-#define ON_BD_USB_OVC	GPIO_TO_PIN(2, 4)
 
 static const short da830_evm_usb11_pins[] = {
 	DA830_GPIO1_15, DA830_GPIO2_4,
 	-1
 };
 
-static da8xx_ocic_handler_t da830_evm_usb_ocic_handler;
-
-static int da830_evm_usb_set_power(unsigned port, int on)
-{
-	gpio_set_value(ON_BD_USB_DRV, on);
-	return 0;
-}
+static struct regulator_consumer_supply usb_ohci_consumer_supply =
+	REGULATOR_SUPPLY("vbus", "ohci-da8xx");
 
-static int da830_evm_usb_get_power(unsigned port)
-{
-	return gpio_get_value(ON_BD_USB_DRV);
-}
-
-static int da830_evm_usb_get_oci(unsigned port)
-{
-	return !gpio_get_value(ON_BD_USB_OVC);
-}
-
-static irqreturn_t da830_evm_usb_ocic_irq(int, void *);
-
-static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler)
-{
-	int irq 	= gpio_to_irq(ON_BD_USB_OVC);
-	int error	= 0;
-
-	if (handler != NULL) {
-		da830_evm_usb_ocic_handler = handler;
-
-		error = request_irq(irq, da830_evm_usb_ocic_irq,
-				    IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-				    "OHCI over-current indicator", NULL);
-		if (error)
-			pr_err("%s: could not request IRQ to watch over-current indicator changes\n",
-			       __func__);
-	} else
-		free_irq(irq, NULL);
-
-	return error;
-}
+static struct regulator_init_data usb_ohci_initdata = {
+	.consumer_supplies = &usb_ohci_consumer_supply,
+	.num_consumer_supplies = 1,
+	.constraints = {
+		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+	},
+};
 
-static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = {
-	.set_power	= da830_evm_usb_set_power,
-	.get_power	= da830_evm_usb_get_power,
-	.get_oci	= da830_evm_usb_get_oci,
-	.ocic_notify	= da830_evm_usb_ocic_notify,
+static struct fixed_voltage_config usb_ohci_config = {
+	.supply_name		= "vbus",
+	.microvolts		= 5000000,
+	.gpio			= GPIO_TO_PIN(1, 15),
+	.enable_high		= 1,
+	.enabled_at_boot	= 0,
+	.init_data		= &usb_ohci_initdata,
+};
 
-	/* TPS2065 switch @ 5V */
-	.potpgt		= (3 + 1) / 2,	/* 3 ms max */
+static struct platform_device da8xx_usb11_regulator = {
+	.name	= "reg-fixed-voltage",
+	.id	= 0,
+	.dev	= {
+		.platform_data = &usb_ohci_config,
+	},
 };
 
-static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id)
-{
-	da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1);
-	return IRQ_HANDLED;
-}
+static struct gpiod_lookup_table usb11_gpios_table = {
+	.dev_id = "reg-fixed-voltage.0",
+	.table = {
+		/* gpio chip 1 contains gpio range 32-63 */
+		GPIO_LOOKUP("davinci_gpio.1", 4, "over-current",
+				GPIO_ACTIVE_LOW),
+	},
+};
 
 static __init void da830_evm_usb_init(void)
 {
@@ -145,23 +123,13 @@ static __init void da830_evm_usb_init(void)
 		return;
 	}
 
-	ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
-	if (ret) {
-		pr_err("%s: failed to request GPIO for USB 1.1 port power control: %d\n",
-		       __func__, ret);
-		return;
-	}
-	gpio_direction_output(ON_BD_USB_DRV, 0);
+	gpiod_add_lookup_table(&usb11_gpios_table);
 
-	ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
-	if (ret) {
-		pr_err("%s: failed to request GPIO for USB 1.1 port over-current indicator: %d\n",
-		       __func__, ret);
-		return;
-	}
-	gpio_direction_input(ON_BD_USB_OVC);
+	ret = platform_device_register(&da8xx_usb11_regulator);
+	if (ret)
+		pr_warn("fail to add ohci regulator\n");
 
-	ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
+	ret = da8xx_register_usb11(NULL);
 	if (ret)
 		pr_warn("%s: USB 1.1 registration failed: %d\n", __func__, ret);
 }
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 05/10] ARM: davinci: hawk: Remove vbus and over current gpios
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (3 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 04/10] ARM: davinci: da830: Handle vbus with a regulator Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 06/10] USB: ohci: da8xx: Remove ohci platform callbacks Axel Haslam
                   ` (5 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

The hawk board VBUS is fixed to a 5v source, and the over
current pin is actually not connected to the SoC.

Do not reseve these gpios for OHCI as they are not related
to usb.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 arch/arm/mach-davinci/board-omapl138-hawk.c | 99 ++---------------------------
 1 file changed, 4 insertions(+), 95 deletions(-)

diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
index a4e8726..a252404 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -28,9 +28,6 @@
 #define DA850_HAWK_MMCSD_CD_PIN		GPIO_TO_PIN(3, 12)
 #define DA850_HAWK_MMCSD_WP_PIN		GPIO_TO_PIN(3, 13)
 
-#define DA850_USB1_VBUS_PIN		GPIO_TO_PIN(2, 4)
-#define DA850_USB1_OC_PIN		GPIO_TO_PIN(6, 13)
-
 static short omapl138_hawk_mii_pins[] __initdata = {
 	DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
 	DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
@@ -181,76 +178,10 @@ static __init void omapl138_hawk_mmc_init(void)
 	gpio_free(DA850_HAWK_MMCSD_CD_PIN);
 }
 
-static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id);
-static da8xx_ocic_handler_t hawk_usb_ocic_handler;
-
-static const short da850_hawk_usb11_pins[] = {
-	DA850_GPIO2_4, DA850_GPIO6_13,
-	-1
-};
-
-static int hawk_usb_set_power(unsigned port, int on)
-{
-	gpio_set_value(DA850_USB1_VBUS_PIN, on);
-	return 0;
-}
-
-static int hawk_usb_get_power(unsigned port)
-{
-	return gpio_get_value(DA850_USB1_VBUS_PIN);
-}
-
-static int hawk_usb_get_oci(unsigned port)
-{
-	return !gpio_get_value(DA850_USB1_OC_PIN);
-}
-
-static int hawk_usb_ocic_notify(da8xx_ocic_handler_t handler)
-{
-	int irq         = gpio_to_irq(DA850_USB1_OC_PIN);
-	int error       = 0;
-
-	if (handler != NULL) {
-		hawk_usb_ocic_handler = handler;
-
-		error = request_irq(irq, omapl138_hawk_usb_ocic_irq,
-					IRQF_TRIGGER_RISING |
-					IRQF_TRIGGER_FALLING,
-					"OHCI over-current indicator", NULL);
-		if (error)
-			pr_err("%s: could not request IRQ to watch "
-				"over-current indicator changes\n", __func__);
-	} else {
-		free_irq(irq, NULL);
-	}
-	return error;
-}
-
-static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata = {
-	.set_power      = hawk_usb_set_power,
-	.get_power      = hawk_usb_get_power,
-	.get_oci        = hawk_usb_get_oci,
-	.ocic_notify    = hawk_usb_ocic_notify,
-	/* TPS2087 switch @ 5V */
-	.potpgt         = (3 + 1) / 2,  /* 3 ms max */
-};
-
-static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id)
-{
-	hawk_usb_ocic_handler(&omapl138_hawk_usb11_pdata, 1);
-	return IRQ_HANDLED;
-}
-
 static __init void omapl138_hawk_usb_init(void)
 {
 	int ret;
 
-	ret = davinci_cfg_reg_list(da850_hawk_usb11_pins);
-	if (ret) {
-		pr_warn("%s: USB 1.1 PinMux setup failed: %d\n", __func__, ret);
-		return;
-	}
-
 	ret = da8xx_register_usb20_phy_clk(false);
 	if (ret)
 		pr_warn("%s: USB 2.0 PHY CLK registration failed: %d\n",
@@ -266,34 +197,12 @@ static __init void omapl138_hawk_usb_init(void)
 		pr_warn("%s: USB PHY registration failed: %d\n",
 			__func__, ret);
 
-	ret = gpio_request_one(DA850_USB1_VBUS_PIN,
-			GPIOF_DIR_OUT, "USB1 VBUS");
-	if (ret < 0) {
-		pr_err("%s: failed to request GPIO for USB 1.1 port "
-			"power control: %d\n", __func__, ret);
-		return;
-	}
-
-	ret = gpio_request_one(DA850_USB1_OC_PIN,
-			GPIOF_DIR_IN, "USB1 OC");
-	if (ret < 0) {
-		pr_err("%s: failed to request GPIO for USB 1.1 port "
-			"over-current indicator: %d\n", __func__, ret);
-		goto usb11_setup_oc_fail;
-	}
-
-	ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata);
-	if (ret) {
-		pr_warn("%s: USB 1.1 registration failed: %d\n", __func__, ret);
-		goto usb11_setup_fail;
-	}
+	ret = da8xx_register_usb11(NULL);
+	if (ret)
+		pr_warn("%s: USB 1.1 registration failed: %d\n",
+			__func__, ret);
 
 	return;
-
-usb11_setup_fail:
-	gpio_free(DA850_USB1_OC_PIN);
-usb11_setup_oc_fail:
-	gpio_free(DA850_USB1_VBUS_PIN);
 }
 
 static __init void omapl138_hawk_init(void)
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 06/10] USB: ohci: da8xx: Remove ohci platform callbacks
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (4 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 05/10] ARM: davinci: hawk: Remove vbus and over current gpios Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 07/10] USB: ohci: da8xx: use a flag instead of mask for ocic Axel Haslam
                   ` (4 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

Now that all ohci users are are using a regulator, we can
remove the platform callbacks and data.

potpgt is no longer necessary as a power on delay time can
be specified for the regulator itself.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 arch/arm/mach-davinci/board-da830-evm.c     |  2 +-
 arch/arm/mach-davinci/board-omapl138-hawk.c |  2 +-
 arch/arm/mach-davinci/include/mach/da8xx.h  |  2 +-
 arch/arm/mach-davinci/usb-da8xx.c           |  3 +-
 drivers/usb/host/ohci-da8xx.c               | 84 ++---------------------------
 include/linux/platform_data/usb-davinci.h   | 20 -------
 6 files changed, 9 insertions(+), 104 deletions(-)

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 16a401a..cb67885 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -129,7 +129,7 @@ static __init void da830_evm_usb_init(void)
 	if (ret)
 		pr_warn("fail to add ohci regulator\n");
 
-	ret = da8xx_register_usb11(NULL);
+	ret = da8xx_register_usb11();
 	if (ret)
 		pr_warn("%s: USB 1.1 registration failed: %d\n", __func__, ret);
 }
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
index a252404..cbe7324 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -197,7 +197,7 @@ static __init void omapl138_hawk_usb_init(void)
 		pr_warn("%s: USB PHY registration failed: %d\n",
 			__func__, ret);
 
-	ret = da8xx_register_usb11(NULL);
+	ret = da8xx_register_usb11();
 	if (ret)
 		pr_warn("%s: USB 1.1 registration failed: %d\n",
 			__func__, ret);
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 43322be..6096402 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -91,7 +91,7 @@ int da8xx_register_spi_bus(int instance, unsigned num_chipselect);
 int da8xx_register_watchdog(void);
 int da8xx_register_usb_phy(void);
 int da8xx_register_usb20(unsigned mA, unsigned potpgt);
-int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata);
+int da8xx_register_usb11(void);
 int da8xx_register_usb_refclkin(int rate);
 int da8xx_register_usb20_phy_clk(bool use_usb_refclkin);
 int da8xx_register_usb11_phy_clk(bool use_usb_refclkin);
diff --git a/arch/arm/mach-davinci/usb-da8xx.c b/arch/arm/mach-davinci/usb-da8xx.c
index c6feecf..4ea91bb 100644
--- a/arch/arm/mach-davinci/usb-da8xx.c
+++ b/arch/arm/mach-davinci/usb-da8xx.c
@@ -119,9 +119,8 @@ static struct platform_device da8xx_usb11_device = {
 	.resource	= da8xx_usb11_resources,
 };
 
-int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
+int __init da8xx_register_usb11(void)
 {
-	da8xx_usb11_device.dev.platform_data = pdata;
 	return platform_device_register(&da8xx_usb11_device);
 }
 
diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 0a4b885..3dcbf1f 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -89,12 +89,8 @@ static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on)
 {
 	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 	int ret;
 
-	if (hub && hub->set_power)
-		return hub->set_power(1, on);
-
 	if (!da8xx_ohci->vbus_reg)
 		return 0;
 
@@ -121,11 +117,6 @@ static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on)
 static int ohci_da8xx_get_power(struct usb_hcd *hcd)
 {
 	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
-	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
-
-	if (hub && hub->get_power)
-		return hub->get_power(1);
 
 	if (da8xx_ohci->vbus_reg)
 		return regulator_is_enabled(da8xx_ohci->vbus_reg);
@@ -137,13 +128,9 @@ static int ohci_da8xx_get_oci(struct usb_hcd *hcd)
 {
 	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 	unsigned int flags;
 	int ret;
 
-	if (hub && hub->get_oci)
-		return hub->get_oci(1);
-
 	if (!da8xx_ohci->vbus_reg)
 		return 0;
 
@@ -159,29 +146,9 @@ static int ohci_da8xx_get_oci(struct usb_hcd *hcd)
 	return 0;
 }
 
-static int ohci_da8xx_has_set_power(struct usb_hcd *hcd)
+static int ohci_da8xx_has_regulator(struct usb_hcd *hcd)
 {
 	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
-	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
-
-	if (hub && hub->set_power)
-		return 1;
-
-	if (da8xx_ohci->vbus_reg)
-		return 1;
-
-	return 0;
-}
-
-static int ohci_da8xx_has_oci(struct usb_hcd *hcd)
-{
-	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
-	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
-
-	if (hub && hub->get_oci)
-		return 1;
 
 	if (da8xx_ohci->vbus_reg)
 		return 1;
@@ -189,30 +156,9 @@ static int ohci_da8xx_has_oci(struct usb_hcd *hcd)
 	return 0;
 }
 
-static int ohci_da8xx_has_potpgt(struct usb_hcd *hcd)
-{
-	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
-
-	if (hub && hub->potpgt)
-		return 1;
-
-	return 0;
-}
-
 /*
  * Handle the port over-current indicator change.
  */
-static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub,
-				    unsigned port)
-{
-	ocic_mask |= 1 << port;
-
-	/* Once over-current is detected, the port needs to be powered down */
-	if (hub->get_oci(port) > 0)
-		hub->set_power(port, 0);
-}
-
 static int ohci_da8xx_regulator_event(struct notifier_block *nb,
 				unsigned long event, void *data)
 {
@@ -233,12 +179,9 @@ static int ohci_da8xx_register_notify(struct usb_hcd *hcd)
 {
 	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 	int ret = 0;
 
-	if (hub && hub->ocic_notify)
-		ret = hub->ocic_notify(ohci_da8xx_ocic_handler);
-	else if (da8xx_ohci->vbus_reg) {
+	if (da8xx_ohci->vbus_reg) {
 		da8xx_ohci->nb.notifier_call = ohci_da8xx_regulator_event;
 		ret = devm_regulator_register_notifier(da8xx_ohci->vbus_reg,
 						&da8xx_ohci->nb);
@@ -250,19 +193,9 @@ static int ohci_da8xx_register_notify(struct usb_hcd *hcd)
 	return ret;
 }
 
-static void ohci_da8xx_unregister_notify(struct usb_hcd *hcd)
-{
-	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
-
-	if (hub && hub->ocic_notify)
-		hub->ocic_notify(NULL);
-}
-
 static int ohci_da8xx_reset(struct usb_hcd *hcd)
 {
 	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 	struct ohci_hcd	*ohci		= hcd_to_ohci(hcd);
 	int result;
 	u32 rh_a;
@@ -291,20 +224,14 @@ static int ohci_da8xx_reset(struct usb_hcd *hcd)
 	 * register's default value, so that ohci_hub_control() could return
 	 * the correct hub descriptor...
 	 */
-	rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
-	if (ohci_da8xx_has_set_power(hcd)) {
+	if (ohci_da8xx_has_regulator(hcd)) {
+		rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
 		rh_a &= ~RH_A_NPS;
 		rh_a |=  RH_A_PSM;
-	}
-	if (ohci_da8xx_has_oci(hcd)) {
 		rh_a &= ~RH_A_NOCP;
 		rh_a |=  RH_A_OCPM;
+		ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
 	}
-	if (ohci_da8xx_has_potpgt(hcd)) {
-		rh_a &= ~RH_A_POTPGT;
-		rh_a |= hub->potpgt << 24;
-	}
-	ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
 
 	return result;
 }
@@ -479,7 +406,6 @@ static int ohci_da8xx_remove(struct platform_device *pdev)
 {
 	struct usb_hcd	*hcd = platform_get_drvdata(pdev);
 
-	ohci_da8xx_unregister_notify(hcd);
 	usb_remove_hcd(hcd);
 	usb_put_hcd(hcd);
 
diff --git a/include/linux/platform_data/usb-davinci.h b/include/linux/platform_data/usb-davinci.h
index 0926e99..58f4be0 100644
--- a/include/linux/platform_data/usb-davinci.h
+++ b/include/linux/platform_data/usb-davinci.h
@@ -11,26 +11,6 @@
 #ifndef __ASM_ARCH_USB_H
 #define __ASM_ARCH_USB_H
 
-struct	da8xx_ohci_root_hub;
-
-typedef void (*da8xx_ocic_handler_t)(struct da8xx_ohci_root_hub *hub,
-				     unsigned port);
-
-/* Passed as the platform data to the OHCI driver */
-struct	da8xx_ohci_root_hub {
-	/* Switch the port power on/off */
-	int	(*set_power)(unsigned port, int on);
-	/* Read the port power status */
-	int	(*get_power)(unsigned port);
-	/* Read the port over-current indicator */
-	int	(*get_oci)(unsigned port);
-	/* Over-current indicator change notification (pass NULL to disable) */
-	int	(*ocic_notify)(da8xx_ocic_handler_t handler);
-
-	/* Time from power on to power good (in 2 ms units) */
-	u8	potpgt;
-};
-
 void davinci_setup_usb(unsigned mA, unsigned potpgt_ms);
 
 #endif	/* ifndef __ASM_ARCH_USB_H */
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 07/10] USB: ohci: da8xx: use a flag instead of mask for ocic
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (5 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 06/10] USB: ohci: da8xx: Remove ohci platform callbacks Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 08/10] USB: ohci: da8xx: Add devicetree bindings Axel Haslam
                   ` (3 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

Now that the platform callback is removed, we can move the over
current indictor changed flag to the private data structure.

Since the driver only handles a single port, there is no need
for ocic to be a mask, we can use a simple flag instead.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 drivers/usb/host/ohci-da8xx.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 3dcbf1f..83b182e 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -43,12 +43,10 @@ struct da8xx_ohci_hcd {
 	struct regulator *vbus_reg;
 	struct notifier_block nb;
 	unsigned int is_powered;
+	unsigned int oc_changed;
 };
 #define to_da8xx_ohci(hcd) (struct da8xx_ohci_hcd *)(hcd_to_ohci(hcd)->priv)
 
-/* Over-current indicator change bitmask */
-static volatile u16 ocic_mask;
-
 static int ohci_da8xx_enable(struct usb_hcd *hcd)
 {
 	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
@@ -168,7 +166,7 @@ static int ohci_da8xx_regulator_event(struct notifier_block *nb,
 
 	if (event & REGULATOR_EVENT_OVER_CURRENT) {
 		dev_warn(dev, "over current event\n");
-		ocic_mask |= 1;
+		da8xx_ohci->oc_changed = 1;
 		ohci_da8xx_set_power(da8xx_ohci->hcd, 0);
 	}
 
@@ -241,10 +239,11 @@ static int ohci_da8xx_reset(struct usb_hcd *hcd)
  */
 static int ohci_da8xx_hub_status_data(struct usb_hcd *hcd, char *buf)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	int length		= orig_ohci_hub_status_data(hcd, buf);
 
 	/* See if we have OCIC bit set on port 1 */
-	if (ocic_mask & (1 << 1)) {
+	if (da8xx_ohci->oc_changed) {
 		dev_dbg(hcd->self.controller, "over-current indicator change "
 			"on port 1\n");
 
@@ -262,6 +261,7 @@ static int ohci_da8xx_hub_status_data(struct usb_hcd *hcd, char *buf)
 static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 				  u16 wIndex, char *buf, u16 wLength)
 {
+	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
 	struct device *dev		= hcd->self.controller;
 	int temp;
 
@@ -284,7 +284,7 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 			temp |=  RH_PS_POCI;
 
 		/* The over-current indicator change (OCIC) bit is 0 too */
-		if (ocic_mask & (1 << wIndex))
+		if (da8xx_ohci->oc_changed)
 			temp |=  RH_PS_OCIC;
 
 		put_unaligned(cpu_to_le32(temp), (__le32 *)buf);
@@ -311,10 +311,7 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 				temp ? "Set" : "Clear", wIndex,
 				"C_OVER_CURRENT");
 
-			if (temp)
-				ocic_mask |= 1 << wIndex;
-			else
-				ocic_mask &= ~(1 << wIndex);
+			da8xx_ohci->oc_changed = temp;
 			return 0;
 		}
 	}
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 08/10] USB: ohci: da8xx: Add devicetree bindings
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (6 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 07/10] USB: ohci: da8xx: use a flag instead of mask for ocic Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 09/10] USB: ohci: da8xx: Allow probing from DT Axel Haslam
                   ` (2 subsequent siblings)
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

This patch documents the device tree bindings required for
the ohci controller found in TI da8xx family of SoC's

Cc: devicetree@vger.kernel.org
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 .../devicetree/bindings/usb/ohci-da8xx.txt         | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/ohci-da8xx.txt

diff --git a/Documentation/devicetree/bindings/usb/ohci-da8xx.txt b/Documentation/devicetree/bindings/usb/ohci-da8xx.txt
new file mode 100644
index 0000000..f18e82c
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ohci-da8xx.txt
@@ -0,0 +1,39 @@
+DA8XX USB OHCI controller
+
+Required properties:
+
+ - compatible: Should be "ti,da830-ohci"
+ - reg:        Should contain one register range i.e. start and length
+ - interrupts: Description of the interrupt line
+ - phys:       Phandle for the PHY device
+ - phy-names:  Should be "usb-phy"
+
+Optional properties:
+ - vbus-supply: Regulator that controls vbus power
+
+Example:
+
+reg_usb_ohci: regulator@0 {
+        compatible = "regulator-fixed";
+        gpio = <&gpio 109 0>;
+        over-current-gpios = <&gpio 36 0>;
+        regulator-boot-on;
+        enable-active-high;
+        regulator-name = "usb_ohci_vbus";
+        regulator-min-microvolt = <5000000>;
+        regulator-max-microvolt = <5000000>;
+};
+
+usb_phy: usb-phy {
+        compatible = "ti,da830-usb-phy";
+        #phy-cells = <1>;
+};
+
+ohci: usb@0225000 {
+        compatible = "ti,da830-ohci";
+        reg = <0x225000 0x1000>;
+        interrupts = <59>;
+        phys = <&usb_phy 1>;
+        phy-names = "usb-phy";
+        vbus-supply = <&reg_usb_ohci>;
+};
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 09/10] USB: ohci: da8xx: Allow probing from DT
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (7 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 08/10] USB: ohci: da8xx: Add devicetree bindings Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-07 20:39 ` [PATCH v3 10/10] ARM: dts: da850: add usb device node Axel Haslam
  2016-11-08 16:37 ` [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
  10 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

This adds the compatible string to the ohci driver
to be able to probe from DT

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 drivers/usb/host/ohci-da8xx.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 83b182e..bbfe342 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -321,6 +321,13 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 }
 
 /*-------------------------------------------------------------------------*/
+#ifdef CONFIG_OF
+static const struct of_device_id da8xx_ohci_ids[] = {
+	{ .compatible = "ti,da830-ohci" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, da8xx_ohci_ids);
+#endif
 
 static int ohci_da8xx_probe(struct platform_device *pdev)
 {
@@ -472,6 +479,7 @@ static struct platform_driver ohci_hcd_da8xx_driver = {
 #endif
 	.driver		= {
 		.name	= DRV_NAME,
+		.of_match_table = of_match_ptr(da8xx_ohci_ids),
 	},
 };
 
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* [PATCH v3 10/10] ARM: dts: da850: add usb device node
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (8 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 09/10] USB: ohci: da8xx: Allow probing from DT Axel Haslam
@ 2016-11-07 20:39 ` Axel Haslam
  2016-11-21  2:42   ` David Lechner
  2016-11-08 16:37 ` [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
  10 siblings, 1 reply; 19+ messages in thread
From: Axel Haslam @ 2016-11-07 20:39 UTC (permalink / raw)
  To: stern, gregkh, nsekhar, khilman, david, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

This adds the ohci device node for the da850 soc.
It also enables it for the omapl138 hawk board.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
---
 arch/arm/boot/dts/da850-lcdk.dts | 8 ++++++++
 arch/arm/boot/dts/da850.dtsi     | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
index 7b8ab21..aaf533e 100644
--- a/arch/arm/boot/dts/da850-lcdk.dts
+++ b/arch/arm/boot/dts/da850-lcdk.dts
@@ -86,6 +86,14 @@
 	};
 };
 
+&usb_phy {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
 &serial2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&serial2_rxtx_pins>;
diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index 2534aab..50e86da 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -405,6 +405,14 @@
 					>;
 			status = "disabled";
 		};
+		ohci: usb@0225000 {
+			compatible = "ti,da830-ohci";
+			reg = <0x225000 0x1000>;
+			interrupts = <59>;
+			phys = <&usb_phy 1>;
+			phy-names = "usb-phy";
+			status = "disabled";
+		};
 		gpio: gpio@226000 {
 			compatible = "ti,dm6441-gpio";
 			gpio-controller;
-- 
2.10.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 00/10] Add DT support for ohci-da8xx
  2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
                   ` (9 preceding siblings ...)
  2016-11-07 20:39 ` [PATCH v3 10/10] ARM: dts: da850: add usb device node Axel Haslam
@ 2016-11-08 16:37 ` Axel Haslam
  2016-11-10 12:02   ` Greg KH
  10 siblings, 1 reply; 19+ messages in thread
From: Axel Haslam @ 2016-11-08 16:37 UTC (permalink / raw)
  To: Alan Stern, Greg KH, Sekhar Nori, Kevin Hilman, David Lechner, robh+dt
  Cc: devicetree, linux-usb, linux-kernel, linux-arm-kernel, Axel Haslam

Hi,

On Mon, Nov 7, 2016 at 9:39 PM, Axel Haslam <ahaslam@baylibre.com> wrote:
> The purpose of this patch series is to add DT support for the davinci
> ohci driver.
>

To make it easier to review. I will split the arch/arm and driver
patches into separate series.

Regards
Axel


> To be able to use device tree to probe the driver, we need to remove
> the platform callbacks that are handling vbus and over current.
>
> The first four patches prepare the stage by allowing to use a regulator
> instead of the callbacks.
>
> The next three patches convert the callback users to use a regulator
> instead and then remove the callbacks from the driver and platform code.
>
> Finally, we add device tree bindings and support in the driver.
>
> DEPENDENCIES:
> This series has depends on some patches currently under review
> but mostly accepted:
> 1. [PATCH 0/3] fix ohci phy name [1] (accepted)
> 2. [PATCH/RFC v2 0/3] regulator: handling of error conditions for usb drivers [2] (accepted)
> 3. [PATCH] gpio: davinci: Use unique labels for each gpio chip [3] (review pending)
>
> Also the current davinci baranches soon to be pulled to linux-next:
> davinci-for-v4.10/soc
> davinci-for-v4.10/dt
> davinci-for-v4.10/defconfig
> davinci-for-v4.10/cleanup
>
> A branch with all the dependencies can be found here [4].
>
> Changes form v2->v3
> * drop patches that have been integrated to arch/arm
> * drop regulator patches which will be integrated through regulator tree
> * use of the accepted regulator API to get over current status
> * better patch separation with the use of wrappers
>
> Changes from v1->v2
> * Rebased and added patch to make ohci a separate driver
> * Use a regulator instead of handling Gpios (David Lechner)
> * Add an over current mode to regulator framework
> * Fixed regulator is able to register for and over current irq
> * Added patch by Alexandre to remove build warnings
> * Moved global variables into private hcd structure.
>
> [1] https://lkml.org/lkml/2016/11/2/208
> [2] https://lkml.org/lkml/2016/11/3/188
> [3] http://www.spinics.net/lists/linux-gpio/msg17710.html
> [4] https://github.com/axelhaslamx/linux-axel/commits/ohci-da8xx-dt-v3
>
> Axel Haslam (10):
>   USB: ohci: da8xx: use ohci priv data instead of globals
>   USB: ohci: da8xx: Prepare to remove platform callbacks
>   USB: ohci: da8xx: Allow a regulator to handle VBUS
>   ARM: davinci: da830: Handle vbus with a regulator
>   ARM: davinci: hawk: Remove vbus and over current gpios
>   USB: ohci: da8xx: Remove ohci platform callbacks
>   USB: ohci: da8xx: use a flag instead of mask for ocic
>   USB: ohci: da8xx: Add devicetree bindings
>   USB: ohci: da8xx: Allow probing from DT
>   ARM: dts: da850: add usb device node
>
>  .../devicetree/bindings/usb/ohci-da8xx.txt         |  39 ++++
>  arch/arm/boot/dts/da850-lcdk.dts                   |   8 +
>  arch/arm/boot/dts/da850.dtsi                       |   8 +
>  arch/arm/mach-davinci/board-da830-evm.c            | 108 ++++-----
>  arch/arm/mach-davinci/board-omapl138-hawk.c        |  99 +-------
>  arch/arm/mach-davinci/include/mach/da8xx.h         |   2 +-
>  arch/arm/mach-davinci/usb-da8xx.c                  |   3 +-
>  drivers/usb/host/ohci-da8xx.c                      | 253 +++++++++++++++------
>  include/linux/platform_data/usb-davinci.h          |  20 --
>  9 files changed, 283 insertions(+), 257 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/usb/ohci-da8xx.txt
>
> --
> 2.10.1
>

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 00/10] Add DT support for ohci-da8xx
  2016-11-08 16:37 ` [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
@ 2016-11-10 12:02   ` Greg KH
  2016-11-10 17:28     ` Axel Haslam
  0 siblings, 1 reply; 19+ messages in thread
From: Greg KH @ 2016-11-10 12:02 UTC (permalink / raw)
  To: Axel Haslam
  Cc: Alan Stern, Sekhar Nori, Kevin Hilman, David Lechner, robh+dt,
	devicetree, linux-usb, linux-kernel, linux-arm-kernel

On Tue, Nov 08, 2016 at 05:37:41PM +0100, Axel Haslam wrote:
> Hi,
> 
> On Mon, Nov 7, 2016 at 9:39 PM, Axel Haslam <ahaslam@baylibre.com> wrote:
> > The purpose of this patch series is to add DT support for the davinci
> > ohci driver.
> >
> 
> To make it easier to review. I will split the arch/arm and driver
> patches into separate series.

I don't think it's easier, as now I have no idea what order, or what
tree it should go through :(

I'm guessing not mine, so all are now deleted from my patch queue...

greg k-h

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 00/10] Add DT support for ohci-da8xx
  2016-11-10 12:02   ` Greg KH
@ 2016-11-10 17:28     ` Axel Haslam
  0 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-10 17:28 UTC (permalink / raw)
  To: Greg KH
  Cc: Alan Stern, Sekhar Nori, Kevin Hilman, David Lechner, robh+dt,
	devicetree, linux-usb, linux-kernel, linux-arm-kernel

On Thu, Nov 10, 2016 at 1:02 PM, Greg KH <gregkh@linuxfoundation.org> wrote:
> On Tue, Nov 08, 2016 at 05:37:41PM +0100, Axel Haslam wrote:
>> Hi,
>>
>> On Mon, Nov 7, 2016 at 9:39 PM, Axel Haslam <ahaslam@baylibre.com> wrote:
>> > The purpose of this patch series is to add DT support for the davinci
>> > ohci driver.
>> >
>>
>> To make it easier to review. I will split the arch/arm and driver
>> patches into separate series.
>
> I don't think it's easier, as now I have no idea what order, or what
> tree it should go through :(

Hi Greg,

i will resend the series one by one and wait for each to be merged
before sending the next, so that there is no confusion on the ordering
or on what tree they should apply.

Regards
Axel.

>
> I'm guessing not mine, so all are now deleted from my patch queue...
>
> greg k-h

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 10/10] ARM: dts: da850: add usb device node
  2016-11-07 20:39 ` [PATCH v3 10/10] ARM: dts: da850: add usb device node Axel Haslam
@ 2016-11-21  2:42   ` David Lechner
  2016-11-21 10:27     ` Axel Haslam
  0 siblings, 1 reply; 19+ messages in thread
From: David Lechner @ 2016-11-21  2:42 UTC (permalink / raw)
  To: Axel Haslam, nsekhar, khilman, robh+dt, Alexandre Bailon
  Cc: stern, gregkh, devicetree, linux-usb, linux-kernel, linux-arm-kernel

On 11/07/2016 02:39 PM, Axel Haslam wrote:
> This adds the ohci device node for the da850 soc.
> It also enables it for the omapl138 hawk board.
>
> Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
> ---
>  arch/arm/boot/dts/da850-lcdk.dts | 8 ++++++++
>  arch/arm/boot/dts/da850.dtsi     | 8 ++++++++
>  2 files changed, 16 insertions(+)
>
> diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
> index 7b8ab21..aaf533e 100644
> --- a/arch/arm/boot/dts/da850-lcdk.dts
> +++ b/arch/arm/boot/dts/da850-lcdk.dts
> @@ -86,6 +86,14 @@
>  	};
>  };
>
> +&usb_phy {
> +	status = "okay";
> +};
> +
> +&ohci {
> +	status = "okay";
> +};
> +
>  &serial2 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&serial2_rxtx_pins>;
> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index 2534aab..50e86da 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -405,6 +405,14 @@
>  					>;
>  			status = "disabled";
>  		};
> +		ohci: usb@0225000 {

In commit 2957e36e76c836b167e5e0c1edb578d8a9bd7af6 in the linux-davinci 
tree, the alias for the musb device is usb0. So, I think we should use 
usb1 here instead of ohci - or change the usb0 alias to musb.

https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/commit/?h=v4.10/dt&id=2957e36e76c836b167e5e0c1edb578d8a9bd7af6

> +			compatible = "ti,da830-ohci";
> +			reg = <0x225000 0x1000>;
> +			interrupts = <59>;
> +			phys = <&usb_phy 1>;
> +			phy-names = "usb-phy";
> +			status = "disabled";
> +		};
>  		gpio: gpio@226000 {
>  			compatible = "ti,dm6441-gpio";
>  			gpio-controller;
>

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 10/10] ARM: dts: da850: add usb device node
  2016-11-21  2:42   ` David Lechner
@ 2016-11-21 10:27     ` Axel Haslam
  2016-11-21 10:46       ` Sekhar Nori
  0 siblings, 1 reply; 19+ messages in thread
From: Axel Haslam @ 2016-11-21 10:27 UTC (permalink / raw)
  To: David Lechner
  Cc: Sekhar Nori, Kevin Hilman, robh+dt, Alexandre Bailon, Alan Stern,
	Greg KH, devicetree, linux-usb, linux-kernel, linux-arm-kernel

On Mon, Nov 21, 2016 at 3:42 AM, David Lechner <david@lechnology.com> wrote:
> On 11/07/2016 02:39 PM, Axel Haslam wrote:
>>
>> This adds the ohci device node for the da850 soc.
>> It also enables it for the omapl138 hawk board.
>>
>> Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
>> ---
>>  arch/arm/boot/dts/da850-lcdk.dts | 8 ++++++++
>>  arch/arm/boot/dts/da850.dtsi     | 8 ++++++++
>>  2 files changed, 16 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/da850-lcdk.dts
>> b/arch/arm/boot/dts/da850-lcdk.dts
>> index 7b8ab21..aaf533e 100644
>> --- a/arch/arm/boot/dts/da850-lcdk.dts
>> +++ b/arch/arm/boot/dts/da850-lcdk.dts
>> @@ -86,6 +86,14 @@
>>         };
>>  };
>>
>> +&usb_phy {
>> +       status = "okay";
>> +};
>> +
>> +&ohci {
>> +       status = "okay";
>> +};
>> +
>>  &serial2 {
>>         pinctrl-names = "default";
>>         pinctrl-0 = <&serial2_rxtx_pins>;
>> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
>> index 2534aab..50e86da 100644
>> --- a/arch/arm/boot/dts/da850.dtsi
>> +++ b/arch/arm/boot/dts/da850.dtsi
>> @@ -405,6 +405,14 @@
>>                                         >;
>>                         status = "disabled";
>>                 };
>> +               ohci: usb@0225000 {
>
>
> In commit 2957e36e76c836b167e5e0c1edb578d8a9bd7af6 in the linux-davinci
> tree, the alias for the musb device is usb0. So, I think we should use usb1
> here instead of ohci - or change the usb0 alias to musb.
>
> https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/commit/?h=v4.10/dt&id=2957e36e76c836b167e5e0c1edb578d8a9bd7af6

ok, i will change to usb1, since i will be resubmiting this.

>
>> +                       compatible = "ti,da830-ohci";
>> +                       reg = <0x225000 0x1000>;
>> +                       interrupts = <59>;
>> +                       phys = <&usb_phy 1>;
>> +                       phy-names = "usb-phy";
>> +                       status = "disabled";
>> +               };
>>                 gpio: gpio@226000 {
>>                         compatible = "ti,dm6441-gpio";
>>                         gpio-controller;
>>
>

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 10/10] ARM: dts: da850: add usb device node
  2016-11-21 10:27     ` Axel Haslam
@ 2016-11-21 10:46       ` Sekhar Nori
  2016-11-21 10:49         ` Sekhar Nori
  0 siblings, 1 reply; 19+ messages in thread
From: Sekhar Nori @ 2016-11-21 10:46 UTC (permalink / raw)
  To: Axel Haslam, David Lechner
  Cc: Kevin Hilman, robh+dt, Alexandre Bailon, Alan Stern, Greg KH,
	devicetree, linux-usb, linux-kernel, linux-arm-kernel

On Monday 21 November 2016 03:57 PM, Axel Haslam wrote:
> On Mon, Nov 21, 2016 at 3:42 AM, David Lechner <david@lechnology.com> wrote:
>> On 11/07/2016 02:39 PM, Axel Haslam wrote:
>>>
>>> This adds the ohci device node for the da850 soc.
>>> It also enables it for the omapl138 hawk board.
>>>
>>> Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
>>> ---
>>>  arch/arm/boot/dts/da850-lcdk.dts | 8 ++++++++
>>>  arch/arm/boot/dts/da850.dtsi     | 8 ++++++++
>>>  2 files changed, 16 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/da850-lcdk.dts
>>> b/arch/arm/boot/dts/da850-lcdk.dts
>>> index 7b8ab21..aaf533e 100644
>>> --- a/arch/arm/boot/dts/da850-lcdk.dts
>>> +++ b/arch/arm/boot/dts/da850-lcdk.dts
>>> @@ -86,6 +86,14 @@
>>>         };
>>>  };
>>>
>>> +&usb_phy {
>>> +       status = "okay";
>>> +};
>>> +
>>> +&ohci {
>>> +       status = "okay";
>>> +};
>>> +
>>>  &serial2 {
>>>         pinctrl-names = "default";
>>>         pinctrl-0 = <&serial2_rxtx_pins>;
>>> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
>>> index 2534aab..50e86da 100644
>>> --- a/arch/arm/boot/dts/da850.dtsi
>>> +++ b/arch/arm/boot/dts/da850.dtsi
>>> @@ -405,6 +405,14 @@
>>>                                         >;
>>>                         status = "disabled";
>>>                 };
>>> +               ohci: usb@0225000 {
>>
>>
>> In commit 2957e36e76c836b167e5e0c1edb578d8a9bd7af6 in the linux-davinci
>> tree, the alias for the musb device is usb0. So, I think we should use usb1
>> here instead of ohci - or change the usb0 alias to musb.
>>
>> https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/commit/?h=v4.10/dt&id=2957e36e76c836b167e5e0c1edb578d8a9bd7af6
> 
> ok, i will change to usb1, since i will be resubmiting this.

I have already applied a version of this patch. Please re-base against
linux-davinci/master and send a delta patch.

Thanks,
Sekhar

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 10/10] ARM: dts: da850: add usb device node
  2016-11-21 10:46       ` Sekhar Nori
@ 2016-11-21 10:49         ` Sekhar Nori
  2016-11-21 10:53           ` Axel Haslam
  0 siblings, 1 reply; 19+ messages in thread
From: Sekhar Nori @ 2016-11-21 10:49 UTC (permalink / raw)
  To: Axel Haslam, David Lechner
  Cc: Kevin Hilman, robh+dt, Alexandre Bailon, Alan Stern, Greg KH,
	devicetree, linux-usb, linux-kernel, linux-arm-kernel

On Monday 21 November 2016 04:16 PM, Sekhar Nori wrote:
>>> In commit 2957e36e76c836b167e5e0c1edb578d8a9bd7af6 in the linux-davinci
>>> >> tree, the alias for the musb device is usb0. So, I think we should use usb1
>>> >> here instead of ohci - or change the usb0 alias to musb.
>>> >>
>>> >> https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/commit/?h=v4.10/dt&id=2957e36e76c836b167e5e0c1edb578d8a9bd7af6
>> > 
>> > ok, i will change to usb1, since i will be resubmiting this.

> I have already applied a version of this patch. Please re-base against
> linux-davinci/master and send a delta patch.

Hmm, no. scratch that. I mixed this up with the musb patch I applied.
usb1 sounds good. Please also separate out the soc and board specific
dts additions for your next version.

Thanks,
Sekhar

^ permalink raw reply	[flat|nested] 19+ messages in thread

* Re: [PATCH v3 10/10] ARM: dts: da850: add usb device node
  2016-11-21 10:49         ` Sekhar Nori
@ 2016-11-21 10:53           ` Axel Haslam
  0 siblings, 0 replies; 19+ messages in thread
From: Axel Haslam @ 2016-11-21 10:53 UTC (permalink / raw)
  To: Sekhar Nori
  Cc: David Lechner, Kevin Hilman, robh+dt, Alexandre Bailon,
	Alan Stern, Greg KH, devicetree, linux-usb, linux-kernel,
	linux-arm-kernel

On Mon, Nov 21, 2016 at 11:49 AM, Sekhar Nori <nsekhar@ti.com> wrote:
> On Monday 21 November 2016 04:16 PM, Sekhar Nori wrote:
>>>> In commit 2957e36e76c836b167e5e0c1edb578d8a9bd7af6 in the linux-davinci
>>>> >> tree, the alias for the musb device is usb0. So, I think we should use usb1
>>>> >> here instead of ohci - or change the usb0 alias to musb.
>>>> >>
>>>> >> https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/commit/?h=v4.10/dt&id=2957e36e76c836b167e5e0c1edb578d8a9bd7af6
>>> >
>>> > ok, i will change to usb1, since i will be resubmiting this.
>
>> I have already applied a version of this patch. Please re-base against
>> linux-davinci/master and send a delta patch.
>
> Hmm, no. scratch that. I mixed this up with the musb patch I applied.
> usb1 sounds good. Please also separate out the soc and board specific
> dts additions for your next version.

Ok will do.


>
> Thanks,
> Sekhar

^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2016-11-21 10:54 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-11-07 20:39 [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
2016-11-07 20:39 ` [PATCH v3 01/10] USB: ohci: da8xx: use ohci priv data instead of globals Axel Haslam
2016-11-07 20:39 ` [PATCH v3 02/10] USB: ohci: da8xx: Prepare to remove platform callbacks Axel Haslam
2016-11-07 20:39 ` [PATCH v3 03/10] USB: ohci: da8xx: Allow a regulator to handle VBUS Axel Haslam
2016-11-07 20:39 ` [PATCH v3 04/10] ARM: davinci: da830: Handle vbus with a regulator Axel Haslam
2016-11-07 20:39 ` [PATCH v3 05/10] ARM: davinci: hawk: Remove vbus and over current gpios Axel Haslam
2016-11-07 20:39 ` [PATCH v3 06/10] USB: ohci: da8xx: Remove ohci platform callbacks Axel Haslam
2016-11-07 20:39 ` [PATCH v3 07/10] USB: ohci: da8xx: use a flag instead of mask for ocic Axel Haslam
2016-11-07 20:39 ` [PATCH v3 08/10] USB: ohci: da8xx: Add devicetree bindings Axel Haslam
2016-11-07 20:39 ` [PATCH v3 09/10] USB: ohci: da8xx: Allow probing from DT Axel Haslam
2016-11-07 20:39 ` [PATCH v3 10/10] ARM: dts: da850: add usb device node Axel Haslam
2016-11-21  2:42   ` David Lechner
2016-11-21 10:27     ` Axel Haslam
2016-11-21 10:46       ` Sekhar Nori
2016-11-21 10:49         ` Sekhar Nori
2016-11-21 10:53           ` Axel Haslam
2016-11-08 16:37 ` [PATCH v3 00/10] Add DT support for ohci-da8xx Axel Haslam
2016-11-10 12:02   ` Greg KH
2016-11-10 17:28     ` Axel Haslam

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