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drm/radeon/kms/atom: force bpc to 8 for now

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Using the bpc (bits per color) specified by the monitor
can cause problems in some cases.  Until we get a better
handle on how to deal with those cases, just use a bpc of 8.

Reported-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2012-03-23 14:44:47 -04:00
committed by Dave Airlie
parent 5936567146
commit 017d213f64
3 changed files with 10 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/radeon/atombios_crtc.c
View File

@@ -588,8 +588,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
if (encoder->crtc == crtc) { if (encoder->crtc == crtc) {
radeon_encoder = to_radeon_encoder(encoder); radeon_encoder = to_radeon_encoder(encoder);
connector = radeon_get_connector_for_encoder(encoder); connector = radeon_get_connector_for_encoder(encoder);
if (connector && connector->display_info.bpc) /* if (connector && connector->display_info.bpc)
bpc = connector->display_info.bpc; bpc = connector->display_info.bpc; */
encoder_mode = atombios_get_encoder_mode(encoder); encoder_mode = atombios_get_encoder_mode(encoder);
is_duallink = radeon_dig_monitor_is_duallink(encoder, mode->clock); is_duallink = radeon_dig_monitor_is_duallink(encoder, mode->clock);
if ((radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) || if ((radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
@@ -965,7 +965,9 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode
struct radeon_connector_atom_dig *dig_connector = struct radeon_connector_atom_dig *dig_connector =
radeon_connector->con_priv; radeon_connector->con_priv;
int dp_clock; int dp_clock;
bpc = connector->display_info.bpc;
/* if (connector->display_info.bpc)
bpc = connector->display_info.bpc; */
switch (encoder_mode) { switch (encoder_mode) {
case ATOM_ENCODER_MODE_DP_MST: case ATOM_ENCODER_MODE_DP_MST:

3
drivers/gpu/drm/radeon/atombios_dp.c
View File

@@ -405,10 +405,13 @@ static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
/* get bpc from the EDID */ /* get bpc from the EDID */
static int convert_bpc_to_bpp(int bpc) static int convert_bpc_to_bpp(int bpc)
{ {
#if 0
if (bpc == 0) if (bpc == 0)
return 24; return 24;
else else
return bpc * 3; return bpc * 3;
#endif
return 24;
} }
/* get the max pix clock supported by the link rate and lane num */ /* get the max pix clock supported by the link rate and lane num */

4
drivers/gpu/drm/radeon/atombios_encoders.c
View File

@@ -541,7 +541,7 @@ atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mo
dp_clock = dig_connector->dp_clock; dp_clock = dig_connector->dp_clock;
dp_lane_count = dig_connector->dp_lane_count; dp_lane_count = dig_connector->dp_lane_count;
hpd_id = radeon_connector->hpd.hpd; hpd_id = radeon_connector->hpd.hpd;
bpc = connector->display_info.bpc; /* bpc = connector->display_info.bpc; */
} }
/* no dig encoder assigned */ /* no dig encoder assigned */
@@ -1159,7 +1159,7 @@ atombios_external_encoder_setup(struct drm_encoder *encoder,
dp_lane_count = dig_connector->dp_lane_count; dp_lane_count = dig_connector->dp_lane_count;
connector_object_id = connector_object_id =
(radeon_connector->connector_object_id & OBJECT_ID_MASK) >> OBJECT_ID_SHIFT; (radeon_connector->connector_object_id & OBJECT_ID_MASK) >> OBJECT_ID_SHIFT;
bpc = connector->display_info.bpc; /* bpc = connector->display_info.bpc; */
} }
memset(&args, 0, sizeof(args)); memset(&args, 0, sizeof(args));