diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2016-03-22 00:10:27 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2016-06-06 10:14:28 +0300 |
| commit | 5379be29121961bc85b0f10a4f6ef57334d5d6b6 (patch) | |
| tree | a3624ea7ced20e70d9200c2c0844ec560c9b455d /drivers/gpu/drm/omapdrm | |
| parent | e2513b3f568332dcecd0bfe51a1f4b2abcc4ccee (diff) | |
| download | linux-5379be29121961bc85b0f10a4f6ef57334d5d6b6.tar.xz | |
drm/omap: panel-dpi: implement support for a vcc regulator
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.
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/gpu/drm/omapdrm')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/displays/panel-dpi.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c index 9dc1c2f1fbc1..3e697e893567 100644 --- a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c +++ b/drivers/gpu/drm/omapdrm/displays/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); + ddata->backlight_gpio = -ENOENT; r = of_get_display_timing(node, "panel-timing", &timing); |