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usb: musb: omap2+: save and restore OTG_INTERFSEL 

we need to save and restore OTG_INTERFSEL register
else we will be unable to function on resume after
OFF mode.

Reported-by: Devaraj Rangasamy <dev@ti.com>
Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Hema HK 2011-09-07 09:19:24 -07:00 committed by Felipe Balbi
parent ea73755445
commit e25bec1601
2 changed files with 7 additions and 0 deletions
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1
drivers/usb/musb/musb_core.h
View File

@ -311,6 +311,7 @@ struct musb_context_registers {
u8 index, testmode;
u8 devctl, busctl, misc;
u32 otg_interfsel;
struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
};

6
drivers/usb/musb/omap2430.c
View File

@ -491,6 +491,9 @@ static int omap2430_runtime_suspend(struct device *dev)
struct omap2430_glue *glue = dev_get_drvdata(dev);
struct musb *musb = glue_to_musb(glue);
musb->context.otg_interfsel = musb_readl(musb->mregs,
OTG_INTERFSEL);
omap2430_low_level_exit(musb);
otg_set_suspend(musb->xceiv, 1);
@ -503,6 +506,9 @@ static int omap2430_runtime_resume(struct device *dev)
struct musb *musb = glue_to_musb(glue);
omap2430_low_level_init(musb);
musb_writel(musb->mregs, OTG_INTERFSEL,
musb->context.otg_interfsel);
otg_set_suspend(musb->xceiv, 0);
return 0;