diff options
| author | Peter Chen <peter.chen@freescale.com> | 2013-08-13 15:18:01 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2013-09-05 12:41:29 +0800 |
| commit | f413968495f1776ac7ac4d66ff13425b006c32f8 (patch) | |
| tree | f4356792505161dd32a0b7b5dea4acb27474b823 /drivers | |
| parent | 89c3fa3ecc9058071907e16d0d3cd33d046af429 (diff) | |
ENGR00277805-6 usb: chipidea: add ci_hdrc_enter_lpm API
It is used to let the PHY enters low power mode at
controller suspend routine.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/chipidea/bits.h | 1 | ||||
| -rw-r--r-- | drivers/usb/chipidea/core.c | 14 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h index dd0cf9e20273..9f936a361f95 100644 --- a/drivers/usb/chipidea/bits.h +++ b/drivers/usb/chipidea/bits.h @@ -48,6 +48,7 @@ #define PORTSC_SUSP BIT(7) #define PORTSC_HSP BIT(9) #define PORTSC_PTC (0x0FUL << 16) +#define PORTSC_PHCD(d) ((d) ? BIT(22) : BIT(23)) /* PTS and PTW for non lpm version only */ #define PORTSC_PTS(d) \ ((((d) & 0x3) << 30) | (((d) & 0x4) ? BIT(25) : 0)) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index c47a6b46dea3..a68e281f9236 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -451,6 +451,20 @@ void ci_hdrc_remove_device(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(ci_hdrc_remove_device); +void ci_hdrc_enter_lpm(struct platform_device *pdev, bool enable) +{ + struct ci_hdrc *ci = platform_get_drvdata(pdev); + enum ci_hw_regs reg = ci->hw_bank.lpm ? OP_DEVLC : OP_PORTSC; + + if (enable) + hw_write(ci, reg, PORTSC_PHCD(ci->hw_bank.lpm), + PORTSC_PHCD(ci->hw_bank.lpm)); + else + hw_write(ci, reg, PORTSC_PHCD(ci->hw_bank.lpm), + 0); +} +EXPORT_SYMBOL_GPL(ci_hdrc_enter_lpm); + static inline void ci_role_destroy(struct ci_hdrc *ci) { ci_hdrc_gadget_destroy(ci); |