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Commit 5379be29 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Tomi Valkeinen
Browse files

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: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent e2513b3f

drivers/gpu/drm/omapdrm/displays/panel-dpi.c

+13 −0
Original line number Diff line number Diff line
@@ -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);