@@ -13,16 +13,44 @@
#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 inline int sirfsoc_pwrc_is_on_key_down(
+ struct sirfsoc_pwrc_drvdata *pwrcdrv)
+{
+ int state = sirfsoc_rtc_iobrg_readl(
+ pwrcdrv->pwrc_base + PWRC_PIN_STATUS)
+ & PWRC_ON_KEY_BIT;
+ return !state; /* ON_KEY is active low */
+}
+
+static void sirfsoc_pwrc_report_event(struct work_struct *work)
+{
+ struct sirfsoc_pwrc_drvdata *pwrcdrv =
+ container_of((struct delayed_work *)work,
+ struct sirfsoc_pwrc_drvdata, work);
+
+ if (!sirfsoc_pwrc_is_on_key_down(pwrcdrv)) {
+ input_event(pwrcdrv->input, EV_KEY, KEY_POWER, 0);
+ input_sync(pwrcdrv->input);
+ } else {
+ schedule_delayed_work(&pwrcdrv->work,
+ msecs_to_jiffies(PWRC_KEY_DETECT_UP_TIME));
+ }
+}
static irqreturn_t sirfsoc_pwrc_isr(int irq, void *dev_id)
{
@@ -34,21 +62,22 @@ 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_sync(pwrcdrv->input);
- /*
- * Todo: report KEY_POWER event for Android platforms, Android PowerManager
- * will handle the suspend and powerdown/hibernation
- */
+ input_event(pwrcdrv->input, EV_KEY, KEY_POWER, 1);
+ input_sync(pwrcdrv->input);
+ schedule_delayed_work(&pwrcdrv->work,
+ msecs_to_jiffies(PWRC_KEY_DETECT_UP_TIME));
return IRQ_HANDLED;
}
+static void sirfsoc_pwrc_stop_updetect(void *data)
+{
+ struct sirfsoc_pwrc_drvdata *pwrcdrv = data;
+
+ cancel_delayed_work_sync(&pwrcdrv->work);
+}
+
static const struct of_device_id sirfsoc_pwrc_of_match[] = {
{ .compatible = "sirf,prima2-pwrc" },
{},
@@ -86,7 +115,9 @@ 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);
irq = platform_get_irq(pdev, 0);
error = devm_request_irq(&pdev->dev, irq,
@@ -98,6 +129,13 @@ static int sirfsoc_pwrc_probe(struct platform_device *pdev)
return error;
}
+ error = devm_add_action(&pdev->dev, sirfsoc_pwrc_stop_updetect, pwrcdrv);
+ if (error) {
+ dev_err(&pdev->dev, "failed to add stop untouch detection action, %d\n",
+ error);
+ return error;
+ }
+
sirfsoc_rtc_iobrg_writel(
sirfsoc_rtc_iobrg_readl(pwrcdrv->pwrc_base + PWRC_INT_MASK) |
PWRC_ON_KEY_BIT,