drivers/gpu/drm/panel/panel-visionox-g2647fb105.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/panel/panel-visionox-g2647fb105.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/panel/panel-visionox-g2647fb105.c
Extension
.c
Size
7953 bytes
Lines
280
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 visionox_g2647fb105 {
	struct drm_panel panel;
	struct mipi_dsi_device *dsi;
	struct gpio_desc *reset_gpio;
	struct regulator_bulk_data *supplies;
};

static const struct regulator_bulk_data visionox_g2647fb105_supplies[] = {
	{ .supply = "vdd3p3" },
	{ .supply = "vddio" },
	{ .supply = "vsn" },
	{ .supply = "vsp" },
};

static inline
struct visionox_g2647fb105 *to_visionox_g2647fb105(struct drm_panel *panel)
{
	return container_of(panel, struct visionox_g2647fb105, panel);
}

static void visionox_g2647fb105_reset(struct visionox_g2647fb105 *ctx)
{
	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
	usleep_range(1000, 2000);
	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
	usleep_range(10000, 11000);
}

static int visionox_g2647fb105_on(struct visionox_g2647fb105 *ctx)
{
	struct mipi_dsi_device *dsi = ctx->dsi;
	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x70, 0x04);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x40);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4d, 0x32);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x40);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbe, 0x17);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbf, 0xbb);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc0, 0xdd);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc1, 0xff);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd0);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x24);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x03);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc2, 0x08);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);

	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x0000);
	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
	mipi_dsi_msleep(&dsi_ctx, 100);

	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);

	return dsi_ctx.accum_err;
}

static int visionox_g2647fb105_off(struct visionox_g2647fb105 *ctx)
{
	struct mipi_dsi_device *dsi = ctx->dsi;
	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };

	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
	mipi_dsi_msleep(&dsi_ctx, 50);

	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
	mipi_dsi_msleep(&dsi_ctx, 20);

	return dsi_ctx.accum_err;
}

static int visionox_g2647fb105_prepare(struct drm_panel *panel)
{
	struct visionox_g2647fb105 *ctx = to_visionox_g2647fb105(panel);
	struct device *dev = &ctx->dsi->dev;
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(visionox_g2647fb105_supplies), ctx->supplies);
	if (ret < 0) {
		dev_err(dev, "Failed to enable regulators: %d\n", ret);
		return ret;
	}

	visionox_g2647fb105_reset(ctx);

	ret = visionox_g2647fb105_on(ctx);
	if (ret < 0) {
		dev_err(dev, "Failed to initialize panel: %d\n", ret);
		return ret;

Annotation

Implementation Notes