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| author | David (Dingchen) Zhang <dingchen.zhang@amd.com> | 2019-12-06 17:56:37 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-01-09 18:07:48 -0500 |
| commit | c908b1c4bb56c27fa6fbb48e2d3dbebdad366706 (patch) | |
| tree | b7408b6d4f0c8e4f0d708d9514c0980c6503c86d /include/drm | |
| parent | 44be939ff7ac5858f0dbd8a2a4af1fe198e14db1 (diff) | |
| download | linux-stable-c908b1c4bb56c27fa6fbb48e2d3dbebdad366706.tar.gz linux-stable-c908b1c4bb56c27fa6fbb48e2d3dbebdad366706.tar.bz2 linux-stable-c908b1c4bb56c27fa6fbb48e2d3dbebdad366706.zip | |
drm: add dp helper to initialize remote aux channel.
[why]
We need to minimally initialize the remote aux channel, e.g. the
crc work struct of remote aux to dump the sink's DPRX CRCs in MST
setup.
[how]
Add helper that only initializes the crc work struct of the remote
aux, hooke crc work queue to 'drm_dp_aux_crc_work'. Then call this
helper in DP MST port initialization.
This, plus David Francis' patch [1], fix the issue of MST remote
aux DPCD CRCs read.
[1] https://patchwork.kernel.org/patch/11217941/
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: David (Dingchen) Zhang <dingchen.zhang@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 0aeaf4a8951c..bc04467f7c3a 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1465,6 +1465,7 @@ int drm_dp_downstream_id(struct drm_dp_aux *aux, char id[6]); void drm_dp_downstream_debug(struct seq_file *m, const u8 dpcd[DP_RECEIVER_CAP_SIZE], const u8 port_cap[4], struct drm_dp_aux *aux); +void drm_dp_remote_aux_init(struct drm_dp_aux *aux); void drm_dp_aux_init(struct drm_dp_aux *aux); int drm_dp_aux_register(struct drm_dp_aux *aux); void drm_dp_aux_unregister(struct drm_dp_aux *aux); |