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usb: otg: OMAP4430: Introducing suspend function for power management

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Introduced the suspend/resume function for the OMAP4430 internal PHY.
This will be used by the twl6030-usb transceiver driver.
Moved the clock enable/disable function calls and power on/off of the PHY
code from power on/off functions to suspend/resume function.

Pass the suspend function through board data for OMAP4430sdp and OMAP4panda.
This will be used by the twl6030-usb transceiver driver.

Signed-off-by: Hema HK <hemahk@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Hema HK 2011-02-17 12:06:07 +05:30 committed by Felipe Balbi
parent d869274840
commit ee896e348c
4 changed files with 18 additions and 7 deletions
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1
arch/arm/mach-omap2/board-4430sdp.c
View file

@ -272,6 +272,7 @@ static struct twl4030_usb_data omap4_usbphy_data = {
.phy_exit = omap4430_phy_exit,
.phy_power = omap4430_phy_power,
.phy_set_clock = omap4430_phy_set_clk,
.phy_suspend = omap4430_phy_suspend,
};
static struct omap2_hsmmc_info mmc[] = {

1
arch/arm/mach-omap2/board-omap4panda.c
View file

@ -153,6 +153,7 @@ static struct twl4030_usb_data omap4_usbphy_data = {
.phy_exit = omap4430_phy_exit,
.phy_power = omap4430_phy_power,
.phy_set_clock = omap4430_phy_set_clk,
.phy_suspend = omap4430_phy_suspend,
};
static struct omap2_hsmmc_info mmc[] = {

22
arch/arm/mach-omap2/omap_phy_internal.c
View file

@ -103,13 +103,6 @@ int omap4430_phy_set_clk(struct device *dev, int on)
int omap4430_phy_power(struct device *dev, int ID, int on)
{
if (on) {
/* enabled the clocks */
omap4430_phy_set_clk(dev, 1);
/* power on the phy */
if (__raw_readl(ctrl_base + CONTROL_DEV_CONF) & PHY_PD) {
__raw_writel(~PHY_PD, ctrl_base + CONTROL_DEV_CONF);
mdelay(200);
}
if (ID)
/* enable VBUS valid, IDDIG groung */
__raw_writel(AVALID | VBUSVALID, ctrl_base +
@ -125,10 +118,25 @@ int omap4430_phy_power(struct device *dev, int ID, int on)
/* Enable session END and IDIG to high impedence. */
__raw_writel(SESSEND | IDDIG, ctrl_base +
USBOTGHS_CONTROL);
}
return 0;
}
int omap4430_phy_suspend(struct device *dev, int suspend)
{
if (suspend) {
/* Disable the clocks */
omap4430_phy_set_clk(dev, 0);
/* Power down the phy */
__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
} else {
/* Enable the internel phy clcoks */
omap4430_phy_set_clk(dev, 1);
/* power on the phy */
if (__raw_readl(ctrl_base + CONTROL_DEV_CONF) & PHY_PD) {
__raw_writel(~PHY_PD, ctrl_base + CONTROL_DEV_CONF);
mdelay(200);
}
}
return 0;

1
arch/arm/plat-omap/include/plat/usb.h
View file

@ -88,6 +88,7 @@ extern int omap4430_phy_power(struct device *dev, int ID, int on);
extern int omap4430_phy_set_clk(struct device *dev, int on);
extern int omap4430_phy_init(struct device *dev);
extern int omap4430_phy_exit(struct device *dev);
extern int omap4430_phy_suspend(struct device *dev, int suspend);
#endif