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From 2bb61af9b1b1035849a1c869916188f9c8c08f0b Mon Sep 17 00:00:00 2001
From: Eric Bernstein <eric.bernstein@amd.com>
Date: Fri, 25 May 2018 11:57:26 -0400
Subject: [PATCH 4742/5725] drm/amd/display: Allow DP register double buffer
Remove setting DP_DB_DISABLE to avoid issues when changing
bit depth after vbios take over.
Refactor code to perform single register update for both
pixel encoding and component depth fields.
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
.../drm/amd/display/dc/dce/dce_stream_encoder.c | 5 ---
.../amd/display/dc/dcn10/dcn10_stream_encoder.c | 44 ++++++++++------------
2 files changed, 19 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index c0e813c..91642e6 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -289,11 +289,6 @@ static void dce110_stream_encoder_dp_set_stream_attribute(
struct dce110_stream_encoder *enc110 = DCE110STRENC_FROM_STRENC(enc);
-#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
- if (REG(DP_DB_CNTL))
- REG_UPDATE(DP_DB_CNTL, DP_DB_DISABLE, 1);
-#endif
-
/* set pixel encoding */
switch (crtc_timing->pixel_encoding) {
case PIXEL_ENCODING_YCBCR422:
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
index c6a13d0..6f9078f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
@@ -257,20 +257,18 @@ void enc1_stream_encoder_dp_set_stream_attribute(
uint8_t colorimetry_bpc;
uint8_t dynamic_range_rgb = 0; /*full range*/
uint8_t dynamic_range_ycbcr = 1; /*bt709*/
+ uint8_t dp_pixel_encoding = 0;
+ uint8_t dp_component_depth = 0;
struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
- REG_UPDATE(DP_DB_CNTL, DP_DB_DISABLE, 1);
-
/* set pixel encoding */
switch (crtc_timing->pixel_encoding) {
case PIXEL_ENCODING_YCBCR422:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_PIXEL_ENCODING,
- DP_PIXEL_ENCODING_TYPE_YCBCR422);
+ dp_pixel_encoding = DP_PIXEL_ENCODING_TYPE_YCBCR422;
break;
case PIXEL_ENCODING_YCBCR444:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_PIXEL_ENCODING,
- DP_PIXEL_ENCODING_TYPE_YCBCR444);
+ dp_pixel_encoding = DP_PIXEL_ENCODING_TYPE_YCBCR444;
if (crtc_timing->flags.Y_ONLY)
if (crtc_timing->display_color_depth != COLOR_DEPTH_666)
@@ -278,8 +276,8 @@ void enc1_stream_encoder_dp_set_stream_attribute(
* Color depth of Y-only could be
* 8, 10, 12, 16 bits
*/
- REG_UPDATE(DP_PIXEL_FORMAT, DP_PIXEL_ENCODING,
- DP_PIXEL_ENCODING_TYPE_Y_ONLY);
+ dp_pixel_encoding = DP_PIXEL_ENCODING_TYPE_Y_ONLY;
+
/* Note: DP_MSA_MISC1 bit 7 is the indicator
* of Y-only mode.
* This bit is set in HW if register
@@ -287,13 +285,11 @@ void enc1_stream_encoder_dp_set_stream_attribute(
*/
break;
case PIXEL_ENCODING_YCBCR420:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_PIXEL_ENCODING,
- DP_PIXEL_ENCODING_TYPE_YCBCR420);
+ dp_pixel_encoding = DP_PIXEL_ENCODING_TYPE_YCBCR420;
REG_UPDATE(DP_VID_TIMING, DP_VID_N_MUL, 1);
break;
default:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_PIXEL_ENCODING,
- DP_PIXEL_ENCODING_TYPE_RGB444);
+ dp_pixel_encoding = DP_PIXEL_ENCODING_TYPE_RGB444;
break;
}
@@ -314,32 +310,30 @@ void enc1_stream_encoder_dp_set_stream_attribute(
/* set color depth */
switch (crtc_timing->display_color_depth) {
case COLOR_DEPTH_666:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_COMPONENT_DEPTH,
- 0);
+ dp_component_depth = DP_COMPONENT_PIXEL_DEPTH_6BPC;
break;
case COLOR_DEPTH_888:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_COMPONENT_DEPTH,
- DP_COMPONENT_PIXEL_DEPTH_8BPC);
+ dp_component_depth = DP_COMPONENT_PIXEL_DEPTH_8BPC;
break;
case COLOR_DEPTH_101010:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_COMPONENT_DEPTH,
- DP_COMPONENT_PIXEL_DEPTH_10BPC);
-
+ dp_component_depth = DP_COMPONENT_PIXEL_DEPTH_10BPC;
break;
case COLOR_DEPTH_121212:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_COMPONENT_DEPTH,
- DP_COMPONENT_PIXEL_DEPTH_12BPC);
+ dp_component_depth = DP_COMPONENT_PIXEL_DEPTH_12BPC;
break;
case COLOR_DEPTH_161616:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_COMPONENT_DEPTH,
- DP_COMPONENT_PIXEL_DEPTH_16BPC);
+ dp_component_depth = DP_COMPONENT_PIXEL_DEPTH_16BPC;
break;
default:
- REG_UPDATE(DP_PIXEL_FORMAT, DP_COMPONENT_DEPTH,
- DP_COMPONENT_PIXEL_DEPTH_6BPC);
+ dp_component_depth = DP_COMPONENT_PIXEL_DEPTH_6BPC;
break;
}
+ /* Set DP pixel encoding and component depth */
+ REG_UPDATE_2(DP_PIXEL_FORMAT,
+ DP_PIXEL_ENCODING, dp_pixel_encoding,
+ DP_COMPONENT_DEPTH, dp_component_depth);
+
/* set dynamic range and YCbCr range */
switch (crtc_timing->display_color_depth) {
--
2.7.4
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