drivers/gpu/drm/radeon/radeon_connectors.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/radeon/radeon_connectors.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/radeon/radeon_connectors.c
Extension
.c
Size
84506 bytes
Lines
2525
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 mode_size {
		int w;
		int h;
	} common_modes[17] = {
		{ 640,  480},
		{ 720,  480},
		{ 800,  600},
		{ 848,  480},
		{1024,  768},
		{1152,  768},
		{1280,  720},
		{1280,  800},
		{1280,  854},
		{1280,  960},
		{1280, 1024},
		{1440,  900},
		{1400, 1050},
		{1680, 1050},
		{1600, 1200},
		{1920, 1080},
		{1920, 1200}
	};

	for (i = 0; i < 17; i++) {
		if (radeon_encoder->devices & (ATOM_DEVICE_TV_SUPPORT)) {
			if (common_modes[i].w > 1024 ||
			    common_modes[i].h > 768)
				continue;
		}
		if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
			if (common_modes[i].w > native_mode->hdisplay ||
			    common_modes[i].h > native_mode->vdisplay ||
			    (common_modes[i].w == native_mode->hdisplay &&
			     common_modes[i].h == native_mode->vdisplay))
				continue;
		}
		if (common_modes[i].w < 320 || common_modes[i].h < 200)
			continue;

		mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false);
		if (!mode)
			continue;

		drm_mode_probed_add(connector, mode);
	}
}

static int radeon_connector_set_property(struct drm_connector *connector, struct drm_property *property,
				  uint64_t val)
{
	struct drm_device *dev = connector->dev;
	struct radeon_device *rdev = dev->dev_private;
	struct drm_encoder *encoder;
	struct radeon_encoder *radeon_encoder;

	if (property == rdev->mode_info.coherent_mode_property) {
		struct radeon_encoder_atom_dig *dig;
		bool new_coherent_mode;

		/* need to find digital encoder on connector */
		encoder = radeon_find_encoder(connector, DRM_MODE_ENCODER_TMDS);
		if (!encoder)
			return 0;

		radeon_encoder = to_radeon_encoder(encoder);

		if (!radeon_encoder->enc_priv)
			return 0;

		dig = radeon_encoder->enc_priv;
		new_coherent_mode = val ? true : false;
		if (dig->coherent_mode != new_coherent_mode) {
			dig->coherent_mode = new_coherent_mode;
			radeon_property_change_mode(&radeon_encoder->base);
		}
	}

	if (property == rdev->mode_info.audio_property) {
		struct radeon_connector *radeon_connector = to_radeon_connector(connector);
		/* need to find digital encoder on connector */
		encoder = radeon_find_encoder(connector, DRM_MODE_ENCODER_TMDS);
		if (!encoder)
			return 0;

		radeon_encoder = to_radeon_encoder(encoder);

		if (radeon_connector->audio != val) {
			radeon_connector->audio = val;
			radeon_property_change_mode(&radeon_encoder->base);
		}

Annotation

Implementation Notes