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