drivers/gpu/drm/tiny/ili9163.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/tiny/ili9163.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/tiny/ili9163.c
Extension
.c
Size
8513 bytes
Lines
333
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 ili9163_device {
	struct mipi_dbi_dev dbidev;

	struct drm_plane plane;
	struct drm_crtc crtc;
	struct drm_encoder encoder;
	struct drm_connector connector;
};

static struct ili9163_device *to_ili9163_device(struct drm_device *dev)
{
	return container_of(drm_to_mipi_dbi_dev(dev), struct ili9163_device, dbidev);
}

static const u32 ili9163_plane_formats[] = {
	DRM_MIPI_DBI_PLANE_FORMATS,
};

static const u64 ili9163_plane_format_modifiers[] = {
	DRM_MIPI_DBI_PLANE_FORMAT_MODIFIERS,
};

static const struct drm_plane_helper_funcs ili9163_plane_helper_funcs = {
	DRM_MIPI_DBI_PLANE_HELPER_FUNCS,
};

static const struct drm_plane_funcs ili9163_plane_funcs = {
	DRM_MIPI_DBI_PLANE_FUNCS,
	.destroy = drm_plane_cleanup,
};

static void ili9163_crtc_helper_atomic_enable(struct drm_crtc *crtc,
					      struct drm_atomic_commit *state)
{
	struct drm_device *drm = crtc->dev;
	struct ili9163_device *ili9163 = to_ili9163_device(drm);
	struct mipi_dbi_dev *dbidev = &ili9163->dbidev;
	struct mipi_dbi *dbi = &dbidev->dbi;
	u8 addr_mode;
	int ret, idx;

	if (!drm_dev_enter(drm, &idx))
		return;

	DRM_DEBUG_KMS("\n");

	ret = mipi_dbi_poweron_conditional_reset(dbidev);
	if (ret < 0)
		goto out_exit;
	if (ret == 1)
		goto out_enable;

	/* Gamma */
	mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x04);
	mipi_dbi_command(dbi, ILI9163_EN3GAM, 0x00);

	/* Frame Rate */
	mipi_dbi_command(dbi, ILI9163_FRMCTR1, 0x0a, 0x14);

	/* Power Control */
	mipi_dbi_command(dbi, ILI9163_PWCTRL1, 0x0a, 0x00);
	mipi_dbi_command(dbi, ILI9163_PWCTRL2, 0x02);

	/* VCOM */
	mipi_dbi_command(dbi, ILI9163_VMCTRL1, 0x2f, 0x3e);
	mipi_dbi_command(dbi, ILI9163_VMCTRL2, 0x40);

	/* Memory Access Control */
	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);

	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
	msleep(100);

	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
	msleep(100);

out_enable:
	switch (dbidev->rotation) {
	default:
		addr_mode = ILI9163_MADCTL_MX | ILI9163_MADCTL_MY;
		break;
	case 90:
		addr_mode = ILI9163_MADCTL_MX | ILI9163_MADCTL_MV;
		break;
	case 180:
		addr_mode = 0;
		break;
	case 270:
		addr_mode = ILI9163_MADCTL_MY | ILI9163_MADCTL_MV;
		break;

Annotation

Implementation Notes