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| author | Wenjing Liu | 2019-02-23 22:07:45 +0100 |
|---|---|---|
| committer | Alex Deucher | 2019-03-19 21:36:49 +0100 |
| commit | 0dcdcc898234f87c996adb5de1496e3ec7da315b (patch) | |
| tree | 2cca2d5f2feac449cd0fc67f9fa452b820929175 /drivers | |
| parent | drm/amd/display: fix up reference clock abstractions (diff) | |
| download | kernel-qcow2-linux-0dcdcc898234f87c996adb5de1496e3ec7da315b.tar.gz kernel-qcow2-linux-0dcdcc898234f87c996adb5de1496e3ec7da315b.tar.xz kernel-qcow2-linux-0dcdcc898234f87c996adb5de1496e3ec7da315b.zip | |
drm/amd/display: add i2c over aux failure handling
[why]
We will not retry when EDID read failure using i2c over aux
[how]
treat i2c over aux failure the same as defer
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_ddc_types.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h b/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h index 05c8c31d8b31..4ef97f65e55d 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h @@ -68,6 +68,8 @@ enum aux_transaction_reply { AUX_TRANSACTION_REPLY_AUX_ACK = 0x00, AUX_TRANSACTION_REPLY_AUX_NACK = 0x01, AUX_TRANSACTION_REPLY_AUX_DEFER = 0x02, + AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK = 0x04, + AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER = 0x08, AUX_TRANSACTION_REPLY_I2C_ACK = 0x00, AUX_TRANSACTION_REPLY_I2C_NACK = 0x10, diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c index c9b881ddd6b6..cdb3042e1ae1 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -528,6 +528,8 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, break; case AUX_TRANSACTION_REPLY_AUX_DEFER: + case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK: + case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER: if (++aux_defer_retries >= AUX_MAX_DEFER_RETRIES) goto fail; break; |