bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-04 06:22:40 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Use 100 Hz precision for pipe pixel clocks

Browse Source 
[Why]
Users would like more accurate pixel clocks, especially for fractional
"TV" frame rates like 59.94 Hz.

[How]
Store and communicate pixel clocks with 100 Hz accuracy from
dc_crtc_timing through to BIOS command table setpixelclock call.

Signed-off-by: Ken Chalmers <ken.chalmers@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ken Chalmers
2018-11-06 14:24:12 -05:00
committed by Alex Deucher
parent 43995f8fb6
commit 380604e27b
29 changed files with 206 additions and 209 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@@ -2580,7 +2580,7 @@ get_output_color_space(const struct dc_crtc_timing *dc_crtc_timing)
* according to HDMI spec, we use YCbCr709 and YCbCr601
* respectively
*/
if (dc_crtc_timing->pix_clk_khz > 27030) {
if (dc_crtc_timing->pix_clk_100hz > 270300) {
if (dc_crtc_timing->flags.Y_ONLY)
color_space =
COLOR_SPACE_YCBCR709_LIMITED;
@@ -2623,7 +2623,7 @@ static void adjust_colour_depth_from_display_info(struct dc_crtc_timing *timing_
if (timing_out->display_color_depth <= COLOR_DEPTH_888)
return;
do {
normalized_clk = timing_out->pix_clk_khz;
normalized_clk = timing_out->pix_clk_100hz / 10;
/* YCbCr 4:2:0 requires additional adjustment of 1/2 */
if (timing_out->pixel_encoding == PIXEL_ENCODING_YCBCR420)
normalized_clk /= 2;
@@ -2704,7 +2704,7 @@ fill_stream_properties_from_drm_display_mode(struct dc_stream_state *stream,
mode_in->crtc_vsync_start - mode_in->crtc_vdisplay;
timing_out->v_sync_width =
mode_in->crtc_vsync_end - mode_in->crtc_vsync_start;
timing_out->pix_clk_khz = mode_in->crtc_clock;
timing_out->pix_clk_100hz = mode_in->crtc_clock * 10;
timing_out->aspect_ratio = get_aspect_ratio(mode_in);
stream->output_color_space = get_output_color_space(timing_out);
@@ -2832,7 +2832,7 @@ static void set_master_stream(struct dc_stream_state *stream_set[],
if (stream_set[j] && stream_set[j]->triggered_crtc_reset.enabled) {
int refresh_rate = 0;
refresh_rate = (stream_set[j]->timing.pix_clk_khz*1000)/
refresh_rate = (stream_set[j]->timing.pix_clk_100hz*100)/
(stream_set[j]->timing.h_total*stream_set[j]->timing.v_total);
if (refresh_rate > highest_rfr) {
highest_rfr = refresh_rate;