On 20/12/15 13:13, Uwe Kleine-König wrote: > To allow supporting displays that need some logic to enable power to the > display try to get a vcc-supply property from the device tree and drive > the resulting regulator accordingly. > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> > --- > Changes since (implicit) v1, sent with > Message-Id: 1449753107-11410-5-git-send-email-uwe@xxxxxxxxxxxxxxxxx: > > - split out dt binding changes > - reword commit log > --- > drivers/video/fbdev/omap2/displays-new/panel-dpi.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/drivers/video/fbdev/omap2/displays-new/panel-dpi.c b/drivers/video/fbdev/omap2/displays-new/panel-dpi.c > index 201a1c1a6f42..8c3f31ebff00 100644 > --- a/drivers/video/fbdev/omap2/displays-new/panel-dpi.c > +++ b/drivers/video/fbdev/omap2/displays-new/panel-dpi.c > @@ -15,6 +15,7 @@ > #include <linux/slab.h> > #include <linux/of.h> > #include <linux/of_gpio.h> > +#include <linux/regulator/consumer.h> > > #include <video/omapdss.h> > #include <video/omap-panel-data.h> > @@ -32,6 +33,7 @@ struct panel_drv_data { > int backlight_gpio; > > struct gpio_desc *enable_gpio; > + struct regulator *vcc_supply; > }; > > #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) > @@ -83,6 +85,12 @@ static int panel_dpi_enable(struct omap_dss_device *dssdev) > if (r) > return r; > > + r = regulator_enable(ddata->vcc_supply); > + if (r) { > + in->ops.dpi->disable(in); > + return r; > + } > + > gpiod_set_value_cansleep(ddata->enable_gpio, 1); > > if (gpio_is_valid(ddata->backlight_gpio)) > @@ -105,6 +113,7 @@ static void panel_dpi_disable(struct omap_dss_device *dssdev) > gpio_set_value_cansleep(ddata->backlight_gpio, 0); > > gpiod_set_value_cansleep(ddata->enable_gpio, 0); > + regulator_disable(ddata->vcc_supply); > > in->ops.dpi->disable(in); > > @@ -223,6 +232,10 @@ static int panel_dpi_probe_of(struct platform_device *pdev) > if (IS_ERR(gpio)) > return PTR_ERR(gpio); > > + ddata->vcc_supply = devm_regulator_get(&pdev->dev, "vcc"); > + if (IS_ERR(ddata->vcc_supply)) > + return PTR_ERR(ddata->vcc_supply); devm_regulator_get_optional()? Tomi
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