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Commit a3fa6320 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms: initial mode validation support 



Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent f95a9f0b

drivers/gpu/drm/radeon/radeon_connectors.c

+47 −1
Original line number Diff line number Diff line
@@ -397,6 +397,30 @@ static int radeon_lvds_get_modes(struct drm_connector *connector) 
static int radeon_lvds_mode_valid(struct drm_connector *connector,

				  struct drm_display_mode *mode)

{

	struct drm_encoder *encoder = radeon_best_single_encoder(connector);



	if ((mode->hdisplay < 320) || (mode->vdisplay < 240))

		return MODE_PANEL;



	if (encoder) {

		struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

		struct drm_display_mode *native_mode = &radeon_encoder->native_mode;



		/* AVIVO hardware supports downscaling modes larger than the panel

		 * to the panel size, but I'm not sure this is desirable.

		 */

		if ((mode->hdisplay > native_mode->hdisplay) ||

		    (mode->vdisplay > native_mode->vdisplay))

			return MODE_PANEL;



		/* if scaling is disabled, block non-native modes */

		if (radeon_encoder->rmx_type == RMX_OFF) {

			if ((mode->hdisplay != native_mode->hdisplay) ||

			    (mode->vdisplay != native_mode->vdisplay))

				return MODE_PANEL;

		}

	}



	return MODE_OK;

}
@@ -512,6 +536,8 @@ static int radeon_vga_get_modes(struct drm_connector *connector) 
static int radeon_vga_mode_valid(struct drm_connector *connector,

				  struct drm_display_mode *mode)

{

	/* XXX check mode bandwidth */

	/* XXX verify against max DAC output frequency */

	return MODE_OK;

}
@@ -609,6 +635,8 @@ static int radeon_tv_get_modes(struct drm_connector *connector) 
static int radeon_tv_mode_valid(struct drm_connector *connector,

				struct drm_display_mode *mode)

{

	if ((mode->hdisplay > 1024) || (mode->vdisplay > 768))

		return MODE_CLOCK_RANGE;

	return MODE_OK;

}
@@ -801,9 +829,27 @@ static void radeon_dvi_force(struct drm_connector *connector) 
		radeon_connector->use_digital = true;

}



static int radeon_dvi_mode_valid(struct drm_connector *connector,

				  struct drm_display_mode *mode)

{

	struct radeon_connector *radeon_connector = to_radeon_connector(connector);



	/* XXX check mode bandwidth */



	if (radeon_connector->use_digital && (mode->clock > 165000)) {

		if ((radeon_connector->connector_object_id == CONNECTOR_OBJECT_ID_DUAL_LINK_DVI_I) ||

		    (radeon_connector->connector_object_id == CONNECTOR_OBJECT_ID_DUAL_LINK_DVI_D) ||

		    (radeon_connector->connector_object_id == CONNECTOR_OBJECT_ID_HDMI_TYPE_B))

			return MODE_OK;

		else

			return MODE_CLOCK_HIGH;

	}

	return MODE_OK;

}



struct drm_connector_helper_funcs radeon_dvi_connector_helper_funcs = {

	.get_modes = radeon_dvi_get_modes,

	.mode_valid = radeon_vga_mode_valid,

	.mode_valid = radeon_dvi_mode_valid,

	.best_encoder = radeon_dvi_encoder,

};