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

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

4 files changed, 305 insertions, 0 deletions

diff --git a/target/linux/generic/patches-3.6/001-usb-host-ehci-platform-BUG_ON-to-WARN_ON-on-probe.patch b/target/linux/generic/patches-3.6/001-usb-host-ehci-platform-BUG_ON-to-WARN_ON-on-probe.patch
new file mode 100644
index 0000000000..88c678f2a8
--- /dev/null
+++ b/target/linux/generic/patches-3.6/001-usb-host-ehci-platform-BUG_ON-to-WARN_ON-on-probe.patch
@@ -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;
diff --git a/target/linux/generic/patches-3.6/002-usb-host-ohci-platform-BUG_ON-to-WARN_ON-on-probe.patch b/target/linux/generic/patches-3.6/002-usb-host-ohci-platform-BUG_ON-to-WARN_ON-on-probe.patch
new file mode 100644
index 0000000000..68e8a7a35b
--- /dev/null
+++ b/target/linux/generic/patches-3.6/002-usb-host-ohci-platform-BUG_ON-to-WARN_ON-on-probe.patch
@@ -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;
diff --git a/target/linux/generic/patches-3.6/003-usb-host-ehci-platform-add-platform-specific-power-c.patch b/target/linux/generic/patches-3.6/003-usb-host-ehci-platform-add-platform-specific-power-c.patch
new file mode 100644
index 0000000000..12030ebc1c
--- /dev/null
+++ b/target/linux/generic/patches-3.6/003-usb-host-ehci-platform-add-platform-specific-power-c.patch
@@ -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 */
diff --git a/target/linux/generic/patches-3.6/004-usb-host-ohci-platform-add-platform-specific-power-c.patch b/target/linux/generic/patches-3.6/004-usb-host-ohci-platform-add-platform-specific-power-c.patch
new file mode 100644
index 0000000000..7a4169bb03
--- /dev/null
+++ b/target/linux/generic/patches-3.6/004-usb-host-ohci-platform-add-platform-specific-power-c.patch
@@ -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 */