drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c
Extension
.c
Size
5593 bytes
Lines
226
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct tdo_tl070wsh30_panel {
	struct drm_panel base;
	struct mipi_dsi_device *link;

	struct regulator *supply;
	struct gpio_desc *reset_gpio;
};

static inline
struct tdo_tl070wsh30_panel *to_tdo_tl070wsh30_panel(struct drm_panel *panel)
{
	return container_of(panel, struct tdo_tl070wsh30_panel, base);
}

static int tdo_tl070wsh30_panel_prepare(struct drm_panel *panel)
{
	struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel);
	int err;

	err = regulator_enable(tdo_tl070wsh30->supply);
	if (err < 0)
		return err;

	usleep_range(10000, 11000);

	gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 1);

	usleep_range(10000, 11000);

	gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 0);

	msleep(200);

	err = mipi_dsi_dcs_exit_sleep_mode(tdo_tl070wsh30->link);
	if (err < 0) {
		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
		regulator_disable(tdo_tl070wsh30->supply);
		return err;
	}

	msleep(200);

	err = mipi_dsi_dcs_set_display_on(tdo_tl070wsh30->link);
	if (err < 0) {
		dev_err(panel->dev, "failed to set display on: %d\n", err);
		regulator_disable(tdo_tl070wsh30->supply);
		return err;
	}

	msleep(20);

	return 0;
}

static int tdo_tl070wsh30_panel_unprepare(struct drm_panel *panel)
{
	struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel);
	int err;

	err = mipi_dsi_dcs_set_display_off(tdo_tl070wsh30->link);
	if (err < 0)
		dev_err(panel->dev, "failed to set display off: %d\n", err);

	usleep_range(10000, 11000);

	err = mipi_dsi_dcs_enter_sleep_mode(tdo_tl070wsh30->link);
	if (err < 0) {
		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
		return err;
	}

	usleep_range(10000, 11000);

	regulator_disable(tdo_tl070wsh30->supply);

	return 0;
}

static const struct drm_display_mode default_mode = {
	.clock = 47250,
	.hdisplay = 1024,
	.hsync_start = 1024 + 46,
	.hsync_end = 1024 + 46 + 80,
	.htotal = 1024 + 46 + 80 + 100,
	.vdisplay = 600,
	.vsync_start = 600 + 5,
	.vsync_end = 600 + 5 + 5,
	.vtotal = 600 + 5 + 5 + 20,
	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};

Annotation

Implementation Notes