| Message ID | 1423575646-3273-3-git-send-email-sylvain.rochet@finsecur.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, 10 Feb 2015 14:40:46 +0100 Sylvain Rochet <sylvain.rochet@finsecur.com> 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 <sylvain.rochet@finsecur.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> > --- > 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 <linux/clk.h> > #include <linux/pm.h> > #include <linux/pm_runtime.h> > +#include <linux/pinctrl/consumer.h> > > #include <drm/drm_crtc.h> > #include <drm/drm_crtc_helper.h> > @@ -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);
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 <linux/clk.h> #include <linux/pm.h> #include <linux/pm_runtime.h> +#include <linux/pinctrl/consumer.h> #include <drm/drm_crtc.h> #include <drm/drm_crtc_helper.h> @@ -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);
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 <sylvain.rochet@finsecur.com> --- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 3 +++ 1 file changed, 3 insertions(+)