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drm/radeon/kms: fix TRAVIS panel setup

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Different versions of the DP to LVDS bridge chip
need different panel mode settings depending on
the chip version used.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41569

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2012-02-02 10:18:00 -05:00 committed by Dave Airlie
parent de47a9cd62
commit 304a48400d
1 changed files with 15 additions and 3 deletions
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18
drivers/gpu/drm/radeon/atombios_dp.c
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@ -564,9 +564,21 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
ENCODER_OBJECT_ID_NUTMEG)
panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
else if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
ENCODER_OBJECT_ID_TRAVIS)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
ENCODER_OBJECT_ID_TRAVIS) {
u8 id[6];
int i;
for (i = 0; i < 6; i++)
id[i] = radeon_read_dpcd_reg(radeon_connector, 0x503 + i);
if (id[0] == 0x73 &&
id[1] == 0x69 &&
id[2] == 0x76 &&
id[3] == 0x61 &&
id[4] == 0x72 &&
id[5] == 0x54)
panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
else
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
} else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
u8 tmp = radeon_read_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_CAP);
if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;