From 7a15cbd40108a670baae71cbd3cec62b65891fa6 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Thu, 14 Jan 2010 11:42:17 +1000 Subject: [PATCH] drm/radeon/kms: fix displayport->dvi connector DDC. It appears that attempting AUXCH DDC breaks the subsequent attempt to do DDC over the i2c lines, so use the sink type to determine if we should be doing AUXCH or i2c DDC. This fixes my DVI monitor plugged into DP->DVI convertor. Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_display.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 0ec491ead2ff..47ceae9cdc43 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -357,7 +357,8 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector) if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) || (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) { struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; - if (dig->dp_i2c_bus) + if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT || + dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) && dig->dp_i2c_bus) radeon_connector->edid = drm_get_edid(&radeon_connector->base, &dig->dp_i2c_bus->adapter); } if (!radeon_connector->ddc_bus) -- 2.30.2