drm/panel: otm8009a: Add support for the optional power-supply (ded8d7fe) · Commits · 戴 / test

drivers/gpu/drm/panel/panel-orisetech-otm8009a.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -11,6 +11,7 @@
		#include <drm/drm_panel.h>
		#include <linux/backlight.h>
		#include <linux/gpio/consumer.h>
		#include <linux/regulator/consumer.h>
		#include <video/mipi_display.h>

		#define DRV_NAME "orisetech_otm8009a"
		@@ -62,6 +63,7 @@ struct otm8009a {
		struct drm_panel panel;
		struct backlight_device *bl_dev;
		struct gpio_desc *reset_gpio;
		struct regulator *supply;
		bool prepared;
		bool enabled;
		};
		@@ -279,6 +281,8 @@ static int otm8009a_unprepare(struct drm_panel *panel)
		msleep(20);
		}

		regulator_disable(ctx->supply);

		ctx->prepared = false;

		return 0;
		@@ -292,6 +296,12 @@ static int otm8009a_prepare(struct drm_panel *panel)
		if (ctx->prepared)
		return 0;

		ret = regulator_enable(ctx->supply);
		if (ret < 0) {
		DRM_ERROR("failed to enable supply: %d\n", ret);
		return ret;
		}

		if (ctx->reset_gpio) {
		gpiod_set_value_cansleep(ctx->reset_gpio, 0);
		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
		@@ -414,6 +424,13 @@ static int otm8009a_probe(struct mipi_dsi_device *dsi)
		return PTR_ERR(ctx->reset_gpio);
		}

		ctx->supply = devm_regulator_get(dev, "power");
		if (IS_ERR(ctx->supply)) {
		ret = PTR_ERR(ctx->supply);
		dev_err(dev, "failed to request regulator: %d\n", ret);
		return ret;
		}

		mipi_dsi_set_drvdata(dsi, ctx);

		ctx->dev = dev;