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path: root/drivers/gpu/drm/radeon/atombios_dp.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
-rw-r--r--drivers/gpu/drm/radeon/atombios_dp.c37
1 files changed, 17 insertions, 20 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 3eb0ca5..99915a6 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -332,11 +332,13 @@ bool radeon_process_aux_ch(struct radeon_i2c_chan *chan, u8 *req_bytes,
PROCESS_AUX_CHANNEL_TRANSACTION_PS_ALLOCATION args;
int index = GetIndexIntoMasterTable(COMMAND, ProcessAuxChannelTransaction);
unsigned char *base;
+ int retry_count = 0;
memset(&args, 0, sizeof(args));
base = (unsigned char *)rdev->mode_info.atom_context->scratch;
+retry:
memcpy(base, req_bytes, num_bytes);
args.lpAuxRequest = 0;
@@ -347,10 +349,12 @@ bool radeon_process_aux_ch(struct radeon_i2c_chan *chan, u8 *req_bytes,
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
- if (args.ucReplyStatus) {
- DRM_DEBUG("failed to get auxch %02x%02x %02x %02x 0x%02x %02x\n",
+ if (args.ucReplyStatus && !args.ucDataOutLen) {
+ if (args.ucReplyStatus == 0x20 && retry_count++ < 10)
+ goto retry;
+ DRM_DEBUG("failed to get auxch %02x%02x %02x %02x 0x%02x %02x after %d retries\n",
req_bytes[1], req_bytes[0], req_bytes[2], req_bytes[3],
- chan->rec.i2c_id, args.ucReplyStatus);
+ chan->rec.i2c_id, args.ucReplyStatus, retry_count);
return false;
}
@@ -468,7 +472,7 @@ void radeon_dp_set_link_config(struct drm_connector *connector,
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
- if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) ||
+ if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) &&
(connector->connector_type != DRM_MODE_CONNECTOR_eDP))
return;
@@ -583,7 +587,7 @@ void dp_link_train(struct drm_encoder *encoder,
u8 train_set[4];
int i;
- if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) ||
+ if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) &&
(connector->connector_type != DRM_MODE_CONNECTOR_eDP))
return;
@@ -596,21 +600,14 @@ void dp_link_train(struct drm_encoder *encoder,
return;
dig_connector = radeon_connector->con_priv;
- if (ASIC_IS_DCE32(rdev)) {
- if (dig->dig_block)
- enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER;
- else
- enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER;
- if (dig_connector->linkb)
- enc_id |= ATOM_DP_CONFIG_LINK_B;
- else
- enc_id |= ATOM_DP_CONFIG_LINK_A;
- } else {
- if (dig_connector->linkb)
- enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER | ATOM_DP_CONFIG_LINK_B;
- else
- enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER | ATOM_DP_CONFIG_LINK_A;
- }
+ if (dig->dig_encoder)
+ enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER;
+ else
+ enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER;
+ if (dig_connector->linkb)
+ enc_id |= ATOM_DP_CONFIG_LINK_B;
+ else
+ enc_id |= ATOM_DP_CONFIG_LINK_A;
memset(link_configuration, 0, DP_LINK_CONFIGURATION_SIZE);
if (dig_connector->dp_clock == 270000)
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