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usb: gadget: renesas_usbhs: add suspend/resume support

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Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Kuninori Morimoto 2011-10-10 21:58:19 -07:00 committed by Felipe Balbi
parent 4bb99b7c82
commit ca8a282a53
1 changed files with 64 additions and 5 deletions
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69
drivers/usb/renesas_usbhs/common.c
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@ -203,13 +203,10 @@ static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
} }
/* /*
* notify hotplug * hotplug
*/ */
static void usbhsc_notify_hotplug(struct work_struct *work) static void usbhsc_hotplug(struct usbhs_priv *priv)
{ {
struct usbhs_priv *priv = container_of(work,
struct usbhs_priv,
notify_hotplug_work.work);
struct platform_device *pdev = usbhs_priv_to_pdev(priv); struct platform_device *pdev = usbhs_priv_to_pdev(priv);
struct usbhs_mod *mod = usbhs_mod_get_current(priv); struct usbhs_mod *mod = usbhs_mod_get_current(priv);
int id; int id;
@ -257,6 +254,17 @@ static void usbhsc_notify_hotplug(struct work_struct *work)
} }
} }
/*
* notify hotplug
*/
static void usbhsc_notify_hotplug(struct work_struct *work)
{
struct usbhs_priv *priv = container_of(work,
struct usbhs_priv,
notify_hotplug_work.work);
usbhsc_hotplug(priv);
}
int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev) int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
{ {
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
@ -443,9 +451,60 @@ static int __devexit usbhs_remove(struct platform_device *pdev)
return 0; return 0;
} }
static int usbhsc_suspend(struct device *dev)
{
struct usbhs_priv *priv = dev_get_drvdata(dev);
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
if (mod) {
usbhs_mod_call(priv, stop, priv);
usbhs_mod_change(priv, -1);
}
if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
usbhsc_power_ctrl(priv, 0);
return 0;
}
static int usbhsc_resume(struct device *dev)
{
struct usbhs_priv *priv = dev_get_drvdata(dev);
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
usbhs_platform_call(priv, phy_reset, pdev);
if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
usbhsc_power_ctrl(priv, 1);
usbhsc_hotplug(priv);
return 0;
}
static int usbhsc_runtime_nop(struct device *dev)
{
/* Runtime PM callback shared between ->runtime_suspend()
* and ->runtime_resume(). Simply returns success.
*
* This driver re-initializes all registers after
* pm_runtime_get_sync() anyway so there is no need
* to save and restore registers here.
*/
return 0;
}
static const struct dev_pm_ops usbhsc_pm_ops = {
.suspend = usbhsc_suspend,
.resume = usbhsc_resume,
.runtime_suspend = usbhsc_runtime_nop,
.runtime_resume = usbhsc_runtime_nop,
};
static struct platform_driver renesas_usbhs_driver = { static struct platform_driver renesas_usbhs_driver = {
.driver = { .driver = {
.name = "renesas_usbhs", .name = "renesas_usbhs",
.pm = &usbhsc_pm_ops,
}, },
.probe = usbhs_probe, .probe = usbhs_probe,
.remove = __devexit_p(usbhs_remove), .remove = __devexit_p(usbhs_remove),