diff options
| -rw-r--r-- | drivers/input/misc/sirfsoc-onkey.c | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/drivers/input/misc/sirfsoc-onkey.c b/drivers/input/misc/sirfsoc-onkey.c index 81cdf51..a6e7608 100644 --- a/drivers/input/misc/sirfsoc-onkey.c +++ b/drivers/input/misc/sirfsoc-onkey.c @@ -13,16 +13,41 @@ #include <linux/input.h> #include <linux/rtc/sirfsoc_rtciobrg.h> #include <linux/of.h> +#include <linux/workqueue.h> struct sirfsoc_pwrc_drvdata { u32 pwrc_base; struct input_dev *input; + struct delayed_work work; }; #define PWRC_ON_KEY_BIT (1 << 0) #define PWRC_INT_STATUS 0xc #define PWRC_INT_MASK 0x10 +#define PWRC_PIN_STATUS 0x14 +#define PWRC_KEY_DETECT_UP_TIME 20 /* ms*/ + +static int sirfsoc_pwrc_is_on_key_down(struct sirfsoc_pwrc_drvdata *pwrcdrv) +{ + u32 state = sirfsoc_rtc_iobrg_readl(pwrcdrv->pwrc_base + + PWRC_PIN_STATUS); + return !(state & PWRC_ON_KEY_BIT); /* ON_KEY is active low */ +} + +static void sirfsoc_pwrc_report_event(struct work_struct *work) +{ + struct sirfsoc_pwrc_drvdata *pwrcdrv = + container_of(work, struct sirfsoc_pwrc_drvdata, work.work); + + if (sirfsoc_pwrc_is_on_key_down(pwrcdrv)) { + schedule_delayed_work(&pwrcdrv->work, + msecs_to_jiffies(PWRC_KEY_DETECT_UP_TIME)); + } else { + input_event(pwrcdrv->input, EV_KEY, KEY_POWER, 0); + input_sync(pwrcdrv->input); + } +} static irqreturn_t sirfsoc_pwrc_isr(int irq, void *dev_id) { @@ -34,17 +59,10 @@ static irqreturn_t sirfsoc_pwrc_isr(int irq, void *dev_id) sirfsoc_rtc_iobrg_writel(int_status & ~PWRC_ON_KEY_BIT, pwrcdrv->pwrc_base + PWRC_INT_STATUS); - /* - * For a typical Linux system, we report KEY_SUSPEND to trigger apm-power.c - * to queue a SUSPEND APM event - */ - input_event(pwrcdrv->input, EV_PWR, KEY_SUSPEND, 1); + input_event(pwrcdrv->input, EV_KEY, KEY_POWER, 1); input_sync(pwrcdrv->input); - - /* - * Todo: report KEY_POWER event for Android platforms, Android PowerManager - * will handle the suspend and powerdown/hibernation - */ + schedule_delayed_work(&pwrcdrv->work, + msecs_to_jiffies(PWRC_KEY_DETECT_UP_TIME)); return IRQ_HANDLED; } @@ -76,6 +94,7 @@ static void sirfsoc_pwrc_close(struct input_dev *input) struct sirfsoc_pwrc_drvdata *pwrcdrv = input_get_drvdata(input); sirfsoc_pwrc_toggle_interrupts(pwrcdrv, false); + cancel_delayed_work_sync(&pwrcdrv->work); } static const struct of_device_id sirfsoc_pwrc_of_match[] = { @@ -115,7 +134,9 @@ static int sirfsoc_pwrc_probe(struct platform_device *pdev) pwrcdrv->input->name = "sirfsoc pwrckey"; pwrcdrv->input->phys = "pwrc/input0"; - pwrcdrv->input->evbit[0] = BIT_MASK(EV_PWR); + pwrcdrv->input->evbit[0] = BIT_MASK(EV_KEY); + + INIT_DELAYED_WORK(&pwrcdrv->work, sirfsoc_pwrc_report_event); pwrcdrv->input->open = sirfsoc_pwrc_open; pwrcdrv->input->close = sirfsoc_pwrc_close; |
