* [PATCH v4] USB: host: Add Device tree support for ohci-exynos & ehci-s5p
@ 2012-07-17 4:40 Vivek Gautam
2012-07-17 4:40 ` Vivek Gautam
0 siblings, 1 reply; 4+ messages in thread
From: Vivek Gautam @ 2012-07-17 4:40 UTC (permalink / raw)
To: stern, linux-usb, linux-kernel, devicetree-discuss
Cc: l.majewski, a.kesavan, prashanth.g, kmpark, joshi, olofj,
thomas.abraham, sshtylyov, av.tikhomirov
Reworked third patch; other two got applied to 'usb-next' branch.
Changes from v3:
1) Change the function name from s5p_ehci_setup_gpio()
to s5p_setup_vbus_gpio().
2) Make s5p_setup_vbus_gpio() function to return void
instead of int.
3) Return void in case of failures.
Vivek Gautam (1):
USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer
drivers/usb/host/ehci-s5p.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v4] USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer
@ 2012-07-17 4:40 ` Vivek Gautam
0 siblings, 0 replies; 4+ messages in thread
From: Vivek Gautam @ 2012-07-17 4:40 UTC (permalink / raw)
To: stern, linux-usb, linux-kernel, devicetree-discuss
Cc: l.majewski, a.kesavan, prashanth.g, kmpark, joshi, olofj,
thomas.abraham, sshtylyov, av.tikhomirov
This patch retrieves and configures the vbus control gpio via
the device tree. The suspend/resume callbacks will be later
modified for vbus control.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
drivers/usb/host/ehci-s5p.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 37d84cf..9d8f1dd 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -15,6 +15,7 @@
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/of_gpio.h>
#include <plat/ehci.h>
#include <plat/usb-phy.h>
@@ -64,6 +65,24 @@ static const struct hc_driver s5p_ehci_hc_driver = {
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};
+static void s5p_setup_vbus_gpio(struct platform_device *pdev)
+{
+ int err;
+ int gpio;
+
+ if (!pdev->dev.of_node)
+ return;
+
+ gpio = of_get_named_gpio(pdev->dev.of_node,
+ "samsung,vbus-gpio", 0);
+ if (!gpio_is_valid(gpio))
+ return;
+
+ err = gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH, "ehci_vbus_gpio");
+ if (err)
+ dev_err(&pdev->dev, "can't request ehci vbus gpio %d", gpio);
+}
+
static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);
static int __devinit s5p_ehci_probe(struct platform_device *pdev)
@@ -92,6 +111,8 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
if (!pdev->dev.coherent_dma_mask)
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ s5p_setup_vbus_gpio(pdev);
+
s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd),
GFP_KERNEL);
if (!s5p_ehci)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH v4] USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer
@ 2012-07-17 4:40 ` Vivek Gautam
0 siblings, 0 replies; 4+ messages in thread
From: Vivek Gautam @ 2012-07-17 4:40 UTC (permalink / raw)
To: stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ
Cc: l.majewski-Sze3O3UU22JBDgjK7y7TUQ,
a.kesavan-Sze3O3UU22JBDgjK7y7TUQ,
prashanth.g-Sze3O3UU22JBDgjK7y7TUQ,
kmpark-wEGCiKHe2LqWVfeAwA7xHQ, joshi-Sze3O3UU22JBDgjK7y7TUQ,
olofj-hpIqsD4AKlfQT0dZR+AlfA,
thomas.abraham-QSEj5FYQhm4dnm+yROfE0A,
sshtylyov-Igf4POYTYCDQT0dZR+AlfA,
av.tikhomirov-Sze3O3UU22JBDgjK7y7TUQ
This patch retrieves and configures the vbus control gpio via
the device tree. The suspend/resume callbacks will be later
modified for vbus control.
Signed-off-by: Abhilash Kesavan <a.kesavan-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Signed-off-by: Vivek Gautam <gautam.vivek-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/usb/host/ehci-s5p.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 37d84cf..9d8f1dd 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -15,6 +15,7 @@
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/of_gpio.h>
#include <plat/ehci.h>
#include <plat/usb-phy.h>
@@ -64,6 +65,24 @@ static const struct hc_driver s5p_ehci_hc_driver = {
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};
+static void s5p_setup_vbus_gpio(struct platform_device *pdev)
+{
+ int err;
+ int gpio;
+
+ if (!pdev->dev.of_node)
+ return;
+
+ gpio = of_get_named_gpio(pdev->dev.of_node,
+ "samsung,vbus-gpio", 0);
+ if (!gpio_is_valid(gpio))
+ return;
+
+ err = gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH, "ehci_vbus_gpio");
+ if (err)
+ dev_err(&pdev->dev, "can't request ehci vbus gpio %d", gpio);
+}
+
static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);
static int __devinit s5p_ehci_probe(struct platform_device *pdev)
@@ -92,6 +111,8 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
if (!pdev->dev.coherent_dma_mask)
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ s5p_setup_vbus_gpio(pdev);
+
s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd),
GFP_KERNEL);
if (!s5p_ehci)
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH v4] USB: host: Add Device tree support for ohci-exynos & ehci-s5p
@ 2012-07-17 4:46 Vivek Gautam
0 siblings, 0 replies; 4+ messages in thread
From: Vivek Gautam @ 2012-07-17 4:46 UTC (permalink / raw)
To: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ
Reworked third patch; other two got applied to 'usb-next' branch.
Changes from v3:
1) Change the function name from s5p_ehci_setup_gpio()
to s5p_setup_vbus_gpio().
2) Make s5p_setup_vbus_gpio() function to return void
instead of int.
3) Return void in case of failures.
Vivek Gautam (1):
USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer
drivers/usb/host/ehci-s5p.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-07-17 4:46 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2012-07-17 4:40 [PATCH v4] USB: host: Add Device tree support for ohci-exynos & ehci-s5p Vivek Gautam
2012-07-17 4:40 ` [PATCH v4] USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer Vivek Gautam
2012-07-17 4:40 ` Vivek Gautam
2012-07-17 4:46 [PATCH v4] USB: host: Add Device tree support for ohci-exynos & ehci-s5p Vivek Gautam
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