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generic/3.6: add platform specific power callbacks to {e,o}hci_platform drivers

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Backport of upstream commits:

86e4cb35f2260374df4139c2352afe7fe247cb60 usb: host: ehci-platform: BUG_ON() to WARN_ON() on probe
b6dd245c4594482d46507a0bfd100439be367952 usb: host: ohci-platform: BUG_ON() to WARN_ON() on probe
04216bedafb1b3992a6c2b7f1518281d2ba5fc7b usb: host: ehci-platform: add platform specific power callback
e4d37aeb373a5edceecc1dadc76fabbe8bc18e44 usb: host: ohci-platform: addplatform specific power callback

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 34842
This commit is contained in:
Gabor Juhos 2012-12-22 12:11:06 +00:00
parent b21458709a
commit c0e1a6f342
4 changed files with 305 additions and 0 deletions
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36
target/linux/generic/patches-3.6/001-usb-host-ehci-platform-BUG_ON-to-WARN_ON-on-probe.patch Normal file
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@ -0,0 +1,36 @@
From 86e4cb35f2260374df4139c2352afe7fe247cb60 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Mon, 6 Aug 2012 18:06:53 -0700
Subject: [PATCH] usb: host: ehci-platform: BUG_ON() to WARN_ON() on probe
Commit 86e4cb35f2260374df4139c2352afe7fe247cb60 upstream.
usb_ehci_pdata is certainly required in ehci-platform driver.
This patch avoids using BUG_ON() from driver,
and return from probe with WARN_ON() if pdata was NULL.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/ehci-platform.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -82,10 +82,14 @@ static int __devinit ehci_platform_probe
{
struct usb_hcd *hcd;
struct resource *res_mem;
+ struct usb_ehci_pdata *pdata = dev->dev.platform_data;
int irq;
int err = -ENOMEM;
- BUG_ON(!dev->dev.platform_data);
+ if (!pdata) {
+ WARN_ON(1);
+ return -ENODEV;
+ }
if (usb_disabled())
return -ENODEV;

36
target/linux/generic/patches-3.6/002-usb-host-ohci-platform-BUG_ON-to-WARN_ON-on-probe.patch Normal file
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@ -0,0 +1,36 @@
From b6dd245c4594482d46507a0bfd100439be367952 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Mon, 6 Aug 2012 18:07:30 -0700
Subject: [PATCH] usb: host: ohci-platform: BUG_ON() to WARN_ON() on probe
Commit b6dd245c4594482d46507a0bfd100439be367952 upstream.
usb_ohci_pdata is certainly required in ohci-platform driver.
This patch avoids using BUG_ON() from driver,
and return from probe with WARN_ON() if pdata was NULL.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/ohci-platform.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -83,10 +83,14 @@ static int __devinit ohci_platform_probe
{
struct usb_hcd *hcd;
struct resource *res_mem;
+ struct usb_ohci_pdata *pdata = dev->dev.platform_data;
int irq;
int err = -ENOMEM;
- BUG_ON(!dev->dev.platform_data);
+ if (!pdata) {
+ WARN_ON(1);
+ return -ENODEV;
+ }
if (usb_disabled())
return -ENODEV;

119
target/linux/generic/patches-3.6/003-usb-host-ehci-platform-add-platform-specific-power-c.patch Normal file
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@ -0,0 +1,119 @@
From 04216bedafb1b3992a6c2b7f1518281d2ba5fc7b Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Mon, 6 Aug 2012 18:08:39 -0700
Subject: [PATCH] usb: host: ehci-platform: add platform specific power callback
Commit 04216bedafb1b3992a6c2b7f1518281d2ba5fc7b upstream.
This patch enables to call platform specific power callback function.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/ehci-platform.c | 40 +++++++++++++++++++++++++++++++++++---
include/linux/usb/ehci_pdriver.h | 8 ++++++++
2 files changed, 45 insertions(+), 3 deletions(-)
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -105,10 +105,18 @@ static int __devinit ehci_platform_probe
return -ENXIO;
}
+ if (pdata->power_on) {
+ err = pdata->power_on(dev);
+ if (err < 0)
+ return err;
+ }
+
hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
dev_name(&dev->dev));
- if (!hcd)
- return -ENOMEM;
+ if (!hcd) {
+ err = -ENOMEM;
+ goto err_power;
+ }
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
@@ -136,12 +144,17 @@ err_release_region:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_put_hcd:
usb_put_hcd(hcd);
+err_power:
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
return err;
}
static int __devexit ehci_platform_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev->dev.platform_data;
usb_remove_hcd(hcd);
iounmap(hcd->regs);
@@ -149,6 +162,9 @@ static int __devexit ehci_platform_remov
usb_put_hcd(hcd);
platform_set_drvdata(dev, NULL);
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
return 0;
}
@@ -157,14 +173,32 @@ static int __devexit ehci_platform_remov
static int ehci_platform_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev->platform_data;
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
bool do_wakeup = device_may_wakeup(dev);
+ int ret;
+
+ ret = ehci_suspend(hcd, do_wakeup);
- return ehci_suspend(hcd, do_wakeup);
+ if (pdata->power_suspend)
+ pdata->power_suspend(pdev);
+
+ return ret;
}
static int ehci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev->platform_data;
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+
+ if (pdata->power_on) {
+ int err = pdata->power_on(pdev);
+ if (err < 0)
+ return err;
+ }
ehci_resume(hcd, false);
return 0;
--- a/include/linux/usb/ehci_pdriver.h
+++ b/include/linux/usb/ehci_pdriver.h
@@ -41,6 +41,14 @@ struct usb_ehci_pdata {
unsigned big_endian_mmio:1;
unsigned port_power_on:1;
unsigned port_power_off:1;
+
+ /* Turn on all power and clocks */
+ int (*power_on)(struct platform_device *pdev);
+ /* Turn off all power and clocks */
+ void (*power_off)(struct platform_device *pdev);
+ /* Turn on only VBUS suspend power and hotplug detection,
+ * turn off everything else */
+ void (*power_suspend)(struct platform_device *pdev);
};
#endif /* __USB_CORE_EHCI_PDRIVER_H */

114
target/linux/generic/patches-3.6/004-usb-host-ohci-platform-add-platform-specific-power-c.patch Normal file
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@ -0,0 +1,114 @@
From e4d37aeb373a5edceecc1dadc76fabbe8bc18e44 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Mon, 6 Aug 2012 18:09:10 -0700
Subject: [PATCH] usb: host: ohci-platform: add platform specific power callback
Commit e4d37aeb373a5edceecc1dadc76fabbe8bc18e44 upstream.
This patch enables to call platform specific power callback function.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/ohci-platform.c | 36 ++++++++++++++++++++++++++++++++++--
include/linux/usb/ohci_pdriver.h | 8 ++++++++
2 files changed, 42 insertions(+), 2 deletions(-)
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -107,10 +107,18 @@ static int __devinit ohci_platform_probe
return -ENXIO;
}
+ if (pdata->power_on) {
+ err = pdata->power_on(dev);
+ if (err < 0)
+ return err;
+ }
+
hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
dev_name(&dev->dev));
- if (!hcd)
- return -ENOMEM;
+ if (!hcd) {
+ err = -ENOMEM;
+ goto err_power;
+ }
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
@@ -138,12 +146,17 @@ err_release_region:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_put_hcd:
usb_put_hcd(hcd);
+err_power:
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
return err;
}
static int __devexit ohci_platform_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev->dev.platform_data;
usb_remove_hcd(hcd);
iounmap(hcd->regs);
@@ -151,6 +164,9 @@ static int __devexit ohci_platform_remov
usb_put_hcd(hcd);
platform_set_drvdata(dev, NULL);
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
return 0;
}
@@ -158,12 +174,28 @@ static int __devexit ohci_platform_remov
static int ohci_platform_suspend(struct device *dev)
{
+ struct usb_ohci_pdata *pdata = dev->platform_data;
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+
+ if (pdata->power_suspend)
+ pdata->power_suspend(pdev);
+
return 0;
}
static int ohci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev->platform_data;
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+
+ if (pdata->power_on) {
+ int err = pdata->power_on(pdev);
+ if (err < 0)
+ return err;
+ }
ohci_finish_controller_resume(hcd);
return 0;
--- a/include/linux/usb/ohci_pdriver.h
+++ b/include/linux/usb/ohci_pdriver.h
@@ -33,6 +33,14 @@ struct usb_ohci_pdata {
unsigned big_endian_desc:1;
unsigned big_endian_mmio:1;
unsigned no_big_frame_no:1;
+
+ /* Turn on all power and clocks */
+ int (*power_on)(struct platform_device *pdev);
+ /* Turn off all power and clocks */
+ void (*power_off)(struct platform_device *pdev);
+ /* Turn on only VBUS suspend power and hotplug detection,
+ * turn off everything else */
+ void (*power_suspend)(struct platform_device *pdev);
};
#endif /* __USB_CORE_OHCI_PDRIVER_H */