Re: [PATCH v3 3/3] Input: ti_am335x_tsc - Prevent system suspend when TSC is in use
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2018-05-30 21:44:46
Also in:
linux-omap, lkml
On Tue, Apr 24, 2018 at 11:57:41AM +0530, Vignesh R wrote:
From: Grygorii Strashko <grygorii.strashko@ti.com> Prevent system suspend while user has finger on touch screen, because TSC is wakeup source and suspending device while in use will result in failure to disable the module. This patch uses pm_stay_awake() and pm_relax() APIs to prevent and resume system suspend as required. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com>
Applied, thank you.
quoted hunk ↗ jump to hunk
--- v3: No change drivers/input/touchscreen/ti_am335x_tsc.c | 3 +++ 1 file changed, 3 insertions(+)diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c index a548b0dbe320..ae6fc9099636 100644 --- a/drivers/input/touchscreen/ti_am335x_tsc.c +++ b/drivers/input/touchscreen/ti_am335x_tsc.c@@ -277,6 +277,7 @@ static irqreturn_t titsc_irq(int irq, void *dev) if (status & IRQENB_HW_PEN) { ts_dev->pen_down = true; irqclr |= IRQENB_HW_PEN; + pm_stay_awake(ts_dev->mfd_tscadc->dev); } if (status & IRQENB_PENUP) {@@ -286,6 +287,7 @@ static irqreturn_t titsc_irq(int irq, void *dev) input_report_key(input_dev, BTN_TOUCH, 0); input_report_abs(input_dev, ABS_PRESSURE, 0); input_sync(input_dev); + pm_relax(ts_dev->mfd_tscadc->dev); } else { ts_dev->pen_down = true; }@@ -524,6 +526,7 @@ static int __maybe_unused titsc_resume(struct device *dev) titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00); titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN); + pm_relax(ts_dev->mfd_tscadc->dev); } titsc_step_config(ts_dev); titsc_writel(ts_dev, REG_FIFO0THR,-- 2.17.0
-- Dmitry