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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-10 14:43:06 +1200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-10 14:43:06 +1200
commit84c861161404658c866835bf9ca07eb487added8 (patch)
tree2f2dcf8f3bb9001284b696462613868aa091caf4 /drivers/gpu/drm/radeon/atombios_dp.c
parent746fb63c54d2659e1da3c5e90a77ccb23a309cc5 (diff)
parentcb7cf41961fe10773c491c75ae73539ad4bbed66 (diff)
downloadlinux-sh-84c861161404658c866835bf9ca07eb487added8.tar.gz
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon/kms: use hardcoded dig encoder to transmitter mapping for DCE4.1 drm/radeon/kms: fix dp_detect handling for DP bridge chips drm/radeon/kms: retry aux transactions if there are status flags
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
-rw-r--r--drivers/gpu/drm/radeon/atombios_dp.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 4da23889fea6..79e8ebc05307 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -129,7 +129,9 @@ static int radeon_dp_aux_native_write(struct radeon_connector *radeon_connector,
for (retry = 0; retry < 4; retry++) {
ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus,
msg, msg_bytes, NULL, 0, delay, &ack);
- if (ret < 0)
+ if (ret == -EBUSY)
+ continue;
+ else if (ret < 0)
return ret;
if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
return send_bytes;
@@ -160,7 +162,9 @@ static int radeon_dp_aux_native_read(struct radeon_connector *radeon_connector,
for (retry = 0; retry < 4; retry++) {
ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus,
msg, msg_bytes, recv, recv_bytes, delay, &ack);
- if (ret < 0)
+ if (ret == -EBUSY)
+ continue;
+ else if (ret < 0)
return ret;
if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
return ret;
@@ -236,7 +240,9 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
for (retry = 0; retry < 4; retry++) {
ret = radeon_process_aux_ch(auxch,
msg, msg_bytes, reply, reply_bytes, 0, &ack);
- if (ret < 0) {
+ if (ret == -EBUSY)
+ continue;
+ else if (ret < 0) {
DRM_DEBUG_KMS("aux_ch failed %d\n", ret);
return ret;
}