diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_connectors.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_connectors.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index d2842da8c8b0..5ee81b6a8799 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -227,6 +227,36 @@ int radeon_connector_set_property(struct drm_connector *connector, struct drm_pr return 0; } +static void radeon_fixup_lvds_native_mode(struct drm_encoder *encoder, + struct drm_connector *connector) +{ + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_native_mode *native_mode = &radeon_encoder->native_mode; + + /* Try to get native mode details from EDID if necessary */ + if (!native_mode->dotclock) { + struct drm_display_mode *t, *mode; + + list_for_each_entry_safe(mode, t, &connector->probed_modes, head) { + if (mode->hdisplay == native_mode->panel_xres && + mode->vdisplay == native_mode->panel_yres) { + native_mode->hblank = mode->htotal - mode->hdisplay; + native_mode->hoverplus = mode->hsync_start - mode->hdisplay; + native_mode->hsync_width = mode->hsync_end - mode->hsync_start; + native_mode->vblank = mode->vtotal - mode->vdisplay; + native_mode->voverplus = mode->vsync_start - mode->vdisplay; + native_mode->vsync_width = mode->vsync_end - mode->vsync_start; + native_mode->dotclock = mode->clock; + DRM_INFO("Determined LVDS native mode details from EDID\n"); + break; + } + } + } + if (!native_mode->dotclock) { + DRM_INFO("No LVDS native mode details, disabling RMX\n"); + radeon_encoder->rmx_type = RMX_OFF; + } +} static int radeon_lvds_get_modes(struct drm_connector *connector) { @@ -239,9 +269,11 @@ static int radeon_lvds_get_modes(struct drm_connector *connector) ret = radeon_ddc_get_modes(radeon_connector); if (ret > 0) { encoder = radeon_best_single_encoder(connector); - if (encoder) + if (encoder) { + radeon_fixup_lvds_native_mode(encoder, connector); /* add scaled modes */ radeon_add_common_modes(encoder, connector); + } return ret; } } |