diff options
Diffstat (limited to 'drivers/usb/otg/ab5500-usb.c')
| -rw-r--r-- | drivers/usb/otg/ab5500-usb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/otg/ab5500-usb.c b/drivers/usb/otg/ab5500-usb.c index e8c06e694a6..9bb43508cae 100644 --- a/drivers/usb/otg/ab5500-usb.c +++ b/drivers/usb/otg/ab5500-usb.c @@ -25,6 +25,9 @@ #include <mach/reboot_reasons.h> #include <linux/pm_qos.h> +#include <linux/wakelock.h> +static struct wake_lock ab5500_musb_wakelock; + /* AB5500 USB macros */ #define AB5500_MAIN_WATCHDOG_ENABLE 0x1 @@ -197,6 +200,7 @@ static void ab5500_usb_phy_enable(struct ab5500_usb *ab, bool sel_host) return; ab->phy_enabled = true; + wake_lock(&ab5500_musb_wakelock); ab->usb_gpio->enable(); clk_enable(ab->sysclk); regulator_enable(ab->v_ape); @@ -239,6 +243,8 @@ static void ab5500_usb_phy_disable(struct ab5500_usb *ab, bool sel_host) } cancel_delayed_work_sync(&ab->work_usb_workaround); } + + wake_unlock(&ab5500_musb_wakelock); } #define ab5500_usb_peri_phy_en(ab) ab5500_usb_phy_enable(ab, false) @@ -636,6 +642,12 @@ static int __devinit ab5500_usb_probe(struct platform_device *pdev) if (err < 0) goto fail1; + /* + * wake lock is acquired when usb cable is connected and released when + * cable is removed + */ + wake_lock_init(&ab5500_musb_wakelock, WAKE_LOCK_SUSPEND, "ab5500-usb"); + err = ab5500_usb_boot_detect(ab); if (err < 0) goto fail1; |