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usb: musb: am35x: usb dev_pm_ops structure 

instead of using musb_platform_suspend_resume,
we can use dev_pm_ops and let platform_device
core handle when to call musb_core's suspend and
glue layer's suspend.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2010-12-02 12:53:22 +02:00
parent c20aebb927
commit 6f783e287c
1 changed files with 45 additions and 17 deletions
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62
drivers/usb/musb/am35x.c
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@ -88,6 +88,7 @@ struct am35x_glue {
struct clk *phy_clk;
struct clk *clk;
};
#define glue_to_musb(g) platform_get_drvdata(g->musb)
static inline void phy_on(void)
{
@ -462,20 +463,6 @@ static int am35x_musb_exit(struct musb *musb)
return 0;
}
static int am35x_musb_suspend(struct musb *musb)
{
phy_off();
return 0;
}
static int am35x_musb_resume(struct musb *musb)
{
phy_on();
return 0;
}
/* AM35x supports only 32bit read operation */
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
@ -516,9 +503,6 @@ static const struct musb_platform_ops am35x_ops = {
.set_mode = am35x_musb_set_mode,
.try_idle = am35x_musb_try_idle,
.suspend = am35x_musb_suspend,
.resume = am35x_musb_resume,
.set_vbus = am35x_musb_set_vbus,
};
@ -644,10 +628,54 @@ static int __exit am35x_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM
static int am35x_suspend(struct device *dev)
{
struct am35x_glue *glue = dev_get_drvdata(dev);
phy_off();
clk_disable(glue->phy_clk);
clk_disable(glue->clk);
return 0;
}
static int am35x_resume(struct device *dev)
{
struct am35x_glue *glue = dev_get_drvdata(dev);
int ret;
phy_on();
ret = clk_enable(glue->phy_clk);
if (ret) {
dev_err(dev, "failed to enable PHY clock\n");
return ret;
}
ret = clk_enable(glue->clk);
if (ret) {
dev_err(dev, "failed to enable clock\n");
return ret;
}
return 0;
}
static struct dev_pm_ops am35x_pm_ops = {
.suspend = am35x_suspend,
.resume = am35x_resume,
};
#define DEV_PM_OPS &am35x_pm_ops
#else
#define DEV_PM_OPS NULL
#endif
static struct platform_driver am35x_driver = {
.remove = __exit_p(am35x_remove),
.driver = {
.name = "musb-am35x",
.pm = DEV_PM_OPS,
},
};