diff options
| author | Leo (Sunpeng) Li <sunpeng.li@amd.com> | 2018-01-03 13:04:21 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 14:18:34 -0500 |
| commit | d1bd7d61bc668a11224768cd77bb9d403ad04ffd (patch) | |
| tree | f074faf9270db338e460d3b196fcb0c2c79b2d67 /drivers/gpu/drm/amd | |
| parent | ff1374c94bb7d086a01c745176e418e7ac7e2ce6 (diff) | |
drm/amd/display: Early return on crc get
If crc is disabled, early return when getting crc's. That way, we avoid
reading extra registers within the pflip high irq.
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 34 |
2 files changed, 21 insertions, 14 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index c2ca7b50f0b7..33dc5dce1f6d 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -212,6 +212,7 @@ struct dm_crtc_state { struct dc_stream_state *stream; bool crc_first_skipped; + bool crc_enabled; }; #define to_dm_crtc_state(x) container_of(x, struct dm_crtc_state, base) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c index 5768103803fe..e5fb53a56b73 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c @@ -51,7 +51,6 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name, { struct dm_crtc_state *crtc_state = to_dm_crtc_state(crtc->state); struct dc_stream_state *stream_state = crtc_state->stream; - bool ret; enum amdgpu_dm_pipe_crc_source source = dm_parse_crc_source(src_name); @@ -62,22 +61,25 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name, } if (source == AMDGPU_DM_PIPE_CRC_SOURCE_AUTO) { - ret = dc_stream_configure_crc(stream_state->ctx->dc, - stream_state, - true, true); + if (dc_stream_configure_crc(stream_state->ctx->dc, + stream_state, + true, true)) + crtc_state->crc_enabled = true; + else + return -EINVAL; } else { - ret = dc_stream_configure_crc(stream_state->ctx->dc, - stream_state, - false, false); + if (dc_stream_configure_crc(stream_state->ctx->dc, + stream_state, + false, false)) + crtc_state->crc_enabled = false; + else + return -EINVAL; } - if (ret) { - *values_cnt = 3; - /* Reset crc_skipped flag on dm state */ - crtc_state->crc_first_skipped = false; - return 0; - } - return -EINVAL; + *values_cnt = 3; + /* Reset crc_skipped flag on dm state */ + crtc_state->crc_first_skipped = false; + return 0; } /** @@ -93,6 +95,10 @@ void amdgpu_dm_crtc_handle_crc_irq(struct drm_crtc *crtc) struct dc_stream_state *stream_state = crtc_state->stream; uint32_t crcs[3]; + /* Early return if CRC capture is not enabled. */ + if (!crtc_state->crc_enabled) + return; + /* * Since flipping and crc enablement happen asynchronously, we - more * often than not - will be returning an 'uncooked' crc on first frame. |