Re: [PATCH V2 3/3] input: pmic8xxx_pwrkey: Add support for power key

Hi Anirudh,

On Thu, May 05, 2011 at 11:03:24AM +0530, Anirudh Ghayal wrote:

From: Trilok Soni <redacted>

Add support for PMIC8XXX power key driven over dedicated
KYPD_PWR_N pin. It allows the user to specify the amount
of time by which the power key reporting can be delayed.

+
+static irqreturn_t pwrkey_press_irq(int irq, void *_pwrkey)
+{
+	struct pmic8xxx_pwrkey *pwrkey = _pwrkey;
+	const struct pm8xxx_pwrkey_platform_data *pdata = pwrkey->pdata;
+	unsigned long flags;
+
+	/* no pwrkey time duration, means no screen lock key simulation */
+	if (!pwrkey->pdata->pwrkey_time_ms) {
+		input_report_key(pwrkey->pwr, KEY_POWER, 1);
+		input_sync(pwrkey->pwr);
+		return IRQ_HANDLED;
+	}
+
+	spin_lock_irqsave(&pwrkey->lock, flags);
+
+	input_report_key(pwrkey->pwr, KEY_SCREENLOCK, 1);
+	input_sync(pwrkey->pwr);
+

I am very sorry for misleading Trilok and you earlier but I think this
kind of transformation should be done in your userspace framework. Have
the driver emit KEY_SCREENLOCK and have userspace initiate device
shutdown if it detects that KEY_SCREENLOCK is pressed for longer than X
seconds.

Thanks.

-- 
Dmitry