drivers/gpu/drm/panel/panel-hydis-hv101hd1.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/panel/panel-hydis-hv101hd1.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/panel/panel-hydis-hv101hd1.c
Extension
.c
Size
4550 bytes
Lines
189
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 hv101hd1 {
	struct drm_panel panel;
	struct mipi_dsi_device *dsi;
	struct regulator_bulk_data *supplies;
};

static const struct regulator_bulk_data hv101hd1_supplies[] = {
	{ .supply = "vdd" },
	{ .supply = "vio" },
};

static inline struct hv101hd1 *to_hv101hd1(struct drm_panel *panel)
{
	return container_of(panel, struct hv101hd1, panel);
}

static int hv101hd1_prepare(struct drm_panel *panel)
{
	struct hv101hd1 *hv = to_hv101hd1(panel);
	struct mipi_dsi_multi_context ctx = { .dsi = hv->dsi };
	struct device *dev = &hv->dsi->dev;
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(hv101hd1_supplies), hv->supplies);
	if (ret) {
		dev_err(dev, "error enabling regulators (%d)\n", ret);
		return ret;
	}

	mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
	mipi_dsi_msleep(&ctx, 20);

	mipi_dsi_dcs_set_display_on_multi(&ctx);
	mipi_dsi_msleep(&ctx, 20);

	return 0;
}

static int hv101hd1_disable(struct drm_panel *panel)
{
	struct hv101hd1 *hv = to_hv101hd1(panel);
	struct mipi_dsi_multi_context ctx = { .dsi = hv->dsi };

	mipi_dsi_dcs_set_display_off_multi(&ctx);
	mipi_dsi_msleep(&ctx, 120);
	mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
	mipi_dsi_msleep(&ctx, 20);

	return 0;
}

static int hv101hd1_unprepare(struct drm_panel *panel)
{
	struct hv101hd1 *hv = to_hv101hd1(panel);

	return regulator_bulk_disable(ARRAY_SIZE(hv101hd1_supplies),
				      hv->supplies);
}

static const struct drm_display_mode hv101hd1_mode = {
	.clock = (1366 + 74 + 36 + 24) * (768 + 21 + 7 + 4) * 60 / 1000,
	.hdisplay = 1366,
	.hsync_start = 1366 + 74,
	.hsync_end = 1366 + 74 + 36,
	.htotal = 1366 + 74 + 36 + 24,
	.vdisplay = 768,
	.vsync_start = 768 + 21,
	.vsync_end = 768 + 21 + 7,
	.vtotal = 768 + 21 + 7 + 4,
	.width_mm = 140,
	.height_mm = 220,
};

static int hv101hd1_get_modes(struct drm_panel *panel, struct drm_connector *connector)
{
	struct drm_display_mode *mode;

	mode = drm_mode_duplicate(connector->dev, &hv101hd1_mode);
	if (!mode)
		return -ENOMEM;

	drm_mode_set_name(mode);

	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;

	connector->display_info.width_mm = mode->width_mm;
	connector->display_info.height_mm = mode->height_mm;

	drm_mode_probed_add(connector, mode);

Annotation

Implementation Notes