From mboxrd@z Thu Jan 1 00:00:00 1970 From: boris.brezillon@free-electrons.com (Boris Brezillon) Date: Tue, 10 Feb 2015 15:11:25 +0100 Subject: [PATCH 2/2] drm: atmel-hlcdc: Add pinctrl PM select sleep,default state in CRTC suspend/resume In-Reply-To: <1423575646-3273-3-git-send-email-sylvain.rochet@finsecur.com> References: <1423575646-3273-1-git-send-email-sylvain.rochet@finsecur.com> <1423575646-3273-3-git-send-email-sylvain.rochet@finsecur.com> Message-ID: <20150210151125.65336f20@bbrezillon> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, 10 Feb 2015 14:40:46 +0100 Sylvain Rochet wrote: > Some LCD panels have back-powering issue when un-powered, allows users > to use an alternate pinctrl "sleep" in order to clamp outputs to a > wanted state at suspend. > > Signed-off-by: Sylvain Rochet Acked-by: Boris Brezillon > --- > drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c > index 79c9a19..decd9ea 100644 > --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c > +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c > @@ -21,6 +21,7 @@ > #include > #include > #include > +#include > > #include > #include > @@ -156,6 +157,7 @@ static void atmel_hlcdc_crtc_disable(struct drm_crtc *c) > cpu_relax(); > > clk_disable_unprepare(crtc->dc->hlcdc->sys_clk); > + pinctrl_pm_select_sleep_state(dev->dev); > > pm_runtime_allow(dev->dev); > > @@ -178,6 +180,7 @@ static void atmel_hlcdc_crtc_enable(struct drm_crtc *c) > > pm_runtime_forbid(dev->dev); > > + pinctrl_pm_select_default_state(dev->dev); > clk_prepare_enable(crtc->dc->hlcdc->sys_clk); > > regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_PIXEL_CLK); -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com