diff options
| author | Ajay Kumar Gupta <ajay.gupta@ti.com> | 2010-01-21 15:33:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:54:38 -0800 |
| commit | 4f712e010b2da1cc01c178922f2eb5aaeae461b6 (patch) | |
| tree | 4341a8c4f1e8184b0a727a9746be74267d20f68f /drivers/usb/musb/omap2430.c | |
| parent | 8af6096caf8b3fb7ee33e636c44a29f373d27df5 (diff) | |
usb: musb: Add context save and restore support
Adding support for MUSB register save and restore during system
suspend and resume.
Changes:
- Added musb_save/restore_context() functions
- Added platform specific musb_platform_save/restore_context()
to handle platform specific jobs.
- Maintaining BlackFin compatibility by adding read/write
functions for registers which are not available in BlackFin
Tested system suspend and resume on OMAP3EVM board.
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/musb/omap2430.c')
| -rw-r--r-- | drivers/usb/musb/omap2430.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 83beeac5e7bf..15a3f27b5747 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -255,6 +255,22 @@ int __init musb_platform_init(struct musb *musb) return 0; } +#ifdef CONFIG_PM +void musb_platform_save_context(struct musb_context_registers + *musb_context) +{ + musb_context->otg_sysconfig = omap_readl(OTG_SYSCONFIG); + musb_context->otg_forcestandby = omap_readl(OTG_FORCESTDBY); +} + +void musb_platform_restore_context(struct musb_context_registers + *musb_context) +{ + omap_writel(musb_context->otg_sysconfig, OTG_SYSCONFIG); + omap_writel(musb_context->otg_forcestandby, OTG_FORCESTDBY); +} +#endif + int musb_platform_suspend(struct musb *musb) { u32 l; |