diff options
| author | Jun Lei <Jun.Lei@amd.com> | 2018-11-09 09:21:21 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-01-14 15:04:36 -0500 |
| commit | ceb3dbb4690db8377ad127a5666cd4775d9f70f4 (patch) | |
| tree | e637e1794f4dd7df81ccc0ade7c25d09951fbafc /drivers/gpu/drm/amd/display/dc/calcs | |
| parent | 51ba137ef226255bb13578da13e8a9030c5ad019 (diff) | |
drm/amd/display: remove sink reference in dc_stream_state
[why]
dc_stream_state containing a pointer to sink is poor design.
Sink describes the display, and the specifications or capabilities
it has. That information is irrelevant for dc_stream_state, which describes
hardware state, and is generally used for hardware programming. It
could further be argued that dc_sink itself is just a convenience dc
provides, and DC should be perfectly capable of programming hardware
without any dc_sinks (for example, emulated sinks).
[how]
Phase 1:
Deprecate use of dc_sink pointer in dc_stream. Most references are trivial
to remove, but some call sites are risky (such as is_timing_changed) with
no obvious logical replacement. These will be removed in follow up change.
Add dc_link pointer to dc_stream. This is the typical reason DC really needed
sink pointer, and most call sites are replaced with this.
DMs also need minor updates, as all 3 DMs leverage stream->sink for
some functionality. this is replaced instead by a pointer to private data
inside dc_stream_state, which is used by DMs as a quality of life improvment
for some key functionality. it allows DMs to set pointers have to their own objects
which associate OS objects to dc_stream_states (such as DisplayTarget
and amdgpu_dm_connector). Without the private pointer, DMs would be
forced to perform a lookup for callbacks.
Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-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/gpu/drm/amd/display/dc/calcs')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c index 43e4a2be0fa6..cd88ceca5c41 100644 --- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c +++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c @@ -961,7 +961,7 @@ bool dcn_validate_bandwidth( v->dcc_rate[input_idx] = 1; /*TODO: Worst case? does this change?*/ v->output_format[input_idx] = pipe->stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR420 ? dcn_bw_420 : dcn_bw_444; - v->output[input_idx] = pipe->stream->sink->sink_signal == + v->output[input_idx] = pipe->stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ? dcn_bw_hdmi : dcn_bw_dp; v->output_deep_color[input_idx] = dcn_bw_encoder_8bpc; if (v->output[input_idx] == dcn_bw_hdmi) { |