diff options
Diffstat (limited to 'arch/arm/mach-imx/gpc.c')
| -rw-r--r-- | arch/arm/mach-imx/gpc.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c index 88915c3232b6..6ee4127afb3f 100644 --- a/arch/arm/mach-imx/gpc.c +++ b/arch/arm/mach-imx/gpc.c @@ -62,6 +62,9 @@ #define DEFAULT_IPG_RATE 66000000 #define GPC_PU_UP_DELAY_MARGIN 2 +/* for irq #74 and #75 */ +#define GPC_USB_VBUS_WAKEUP_IRQ_MASK 0xc00 + struct pu_domain { struct generic_pm_domain base; struct regulator *reg; @@ -148,6 +151,24 @@ unsigned int imx_gpc_is_m4_sleeping(void) return 0; } +bool imx_gpc_usb_wakeup_enabled(void) +{ + if (!(cpu_is_imx6sx() || cpu_is_imx6ul())) + return false; + + /* + * for SoC later than i.MX6SX, USB vbus wakeup + * only needs weak 2P5 on, stop_mode_config is + * NOT needed, so we check if is USB vbus wakeup + * is enabled(assume irq #74 and #75) to decide + * if to keep weak 2P5 on. + */ + if (gpc_wake_irqs[1] & GPC_USB_VBUS_WAKEUP_IRQ_MASK) + return true; + + return false; +} + unsigned int imx_gpc_is_mf_mix_off(void) { return readl_relaxed(gpc_base + GPC_PGC_MF_PDN); |