drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c
Extension
.c
Size
6760 bytes
Lines
279
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 sharp_ls060 {
	struct drm_panel panel;
	struct mipi_dsi_device *dsi;
	struct regulator *vddi_supply;
	struct regulator *vddh_supply;
	struct regulator *avdd_supply;
	struct regulator *avee_supply;
	struct gpio_desc *reset_gpio;
};

static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel)
{
	return container_of(panel, struct sharp_ls060, panel);
}

static void sharp_ls060_reset(struct sharp_ls060 *ctx)
{
	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
	usleep_range(10000, 11000);
	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
	usleep_range(10000, 11000);
	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
	usleep_range(10000, 11000);
}

static int sharp_ls060_on(struct sharp_ls060 *ctx)
{
	struct mipi_dsi_device *dsi = ctx->dsi;
	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };

	dsi->mode_flags |= MIPI_DSI_MODE_LPM;

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbb, 0x13);
	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_MEMORY_START);

	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
	mipi_dsi_msleep(&dsi_ctx, 120);

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

	return dsi_ctx.accum_err;
}

static void sharp_ls060_off(struct sharp_ls060 *ctx)
{
	struct mipi_dsi_device *dsi = ctx->dsi;
	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };

	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
	mipi_dsi_usleep_range(&dsi_ctx, 2000, 3000);

	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
	mipi_dsi_msleep(&dsi_ctx, 121);
}

static int sharp_ls060_prepare(struct drm_panel *panel)
{
	struct sharp_ls060 *ctx = to_sharp_ls060(panel);
	int ret;

	ret = regulator_enable(ctx->vddi_supply);
	if (ret < 0)
		return ret;

	ret = regulator_enable(ctx->avdd_supply);
	if (ret < 0)
		goto err_avdd;

	usleep_range(1000, 2000);

	ret = regulator_enable(ctx->avee_supply);
	if (ret < 0)
		goto err_avee;

	usleep_range(10000, 11000);

	ret = regulator_enable(ctx->vddh_supply);
	if (ret < 0)
		goto err_vddh;

	usleep_range(10000, 11000);

	sharp_ls060_reset(ctx);

	ret = sharp_ls060_on(ctx);
	if (ret < 0)
		goto err_on;

Annotation

Implementation Notes