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drm/amd/display: Add 170Mpix/sec DSC throughput support

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[why]
It was missing, although defined in DP spec

[how]
- Add handling of this value to DSC code
- Also remove unused file dsc_helpers.c

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Joshua Aberback <Joshua.Aberback@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nikola Cornij 2019-04-15 17:31:44 -04:00 committed by Alex Deucher
parent c703e753c8
commit d7cd0e053b
3 changed files with 12 additions and 245 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
View file

@ -74,6 +74,12 @@ static bool dsc_line_buff_depth_from_dpcd(int dpcd_line_buff_bit_depth, int *lin
static bool dsc_throughput_from_dpcd(int dpcd_throughput, int *throughput)
{
switch (dpcd_throughput) {
case DP_DSC_THROUGHPUT_MODE_0_UPSUPPORTED:
*throughput = 0;
break;
case DP_DSC_THROUGHPUT_MODE_0_170:
*throughput = 170;
break;
case DP_DSC_THROUGHPUT_MODE_0_340:
*throughput = 340;
break;
@ -170,7 +176,7 @@ static void get_dsc_enc_caps(
/* Returns 'false' if no intersection was found for at least one capablity.
* It also implicitly validates some sink caps against invalid value of zero.
*/
static bool dc_intersect_dsc_caps(
static bool intersect_dsc_caps(
const struct dsc_dec_dpcd_caps *dsc_sink_caps,
const struct dsc_enc_caps *dsc_enc_caps,
enum dc_pixel_encoding pixel_encoding,
@ -537,7 +543,7 @@ static bool setup_dsc_config(
goto done;
// Intersect decoder with encoder DSC caps and validate DSC settings
is_dsc_possible = dc_intersect_dsc_caps(dsc_sink_caps, dsc_enc_caps, timing->pixel_encoding, &dsc_common_caps);
is_dsc_possible = intersect_dsc_caps(dsc_sink_caps, dsc_enc_caps, timing->pixel_encoding, &dsc_common_caps);
if (!is_dsc_possible)
goto done;

243
drivers/gpu/drm/amd/display/dc/dsc/dsc_helpers.c
View file

@ -1,243 +0,0 @@
/*
* Copyright 2018 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
#include "dc.h"
#include "dsc.h"
#include "dc_hw_types.h"
#include <drm/drm_dp_helper.h>
#define DC_LOGGER \
dsc->ctx->logger
static bool dsc_buff_block_size_from_dpcd(int dpcd_buff_block_size, int *buff_block_size);
static bool dsc_line_buff_depth_from_dpcd(int dpcd_line_buff_bit_depth, int *line_buff_bit_depth);
static bool dsc_throughput_from_dpcd(int dpcd_throughput, int *throughput);
static bool dsc_bpp_increment_div_from_dpcd(int bpp_increment_dpcd, uint32_t *bpp_increment_div);
void dsc_optc_config_log(struct display_stream_compressor *dsc,
struct dsc_optc_config *config)
{
DC_LOG_DSC("Setting optc DSC config at DSC inst %d", dsc->inst);
DC_LOG_DSC("\n\tbytes_per_pixel %d\n\tis_pixel_format_444 %d\n\tslice_width %d",
config->bytes_per_pixel,
config->is_pixel_format_444, config->slice_width);
}
void dsc_config_log(struct display_stream_compressor *dsc,
const struct dsc_config *config)
{
DC_LOG_DSC("Setting DSC Config at DSC inst %d", dsc->inst);
DC_LOG_DSC("\n\tnum_slices_h %d\n\tnum_slices_v %d\n\tbits_per_pixel %d\n\tcolor_depth %d",
config->dc_dsc_cfg.num_slices_h,
config->dc_dsc_cfg.num_slices_v,
config->dc_dsc_cfg.bits_per_pixel,
config->color_depth);
}
bool dsc_parse_dsc_dpcd(const uint8_t *dpcd_dsc_data, struct dsc_dec_dpcd_caps *dsc_sink_caps)
{
dsc_sink_caps->is_dsc_supported = (dpcd_dsc_data[DP_DSC_SUPPORT - DP_DSC_SUPPORT] & DP_DSC_DECOMPRESSION_IS_SUPPORTED) != 0;
if (!dsc_sink_caps->is_dsc_supported)
return true;
dsc_sink_caps->dsc_version = dpcd_dsc_data[DP_DSC_REV - DP_DSC_SUPPORT];
{
int buff_block_size;
int buff_size;
if (!dsc_buff_block_size_from_dpcd(dpcd_dsc_data[DP_DSC_RC_BUF_BLK_SIZE - DP_DSC_SUPPORT], &buff_block_size))
return false;
buff_size = dpcd_dsc_data[DP_DSC_RC_BUF_SIZE - DP_DSC_SUPPORT] + 1;
dsc_sink_caps->rc_buffer_size = buff_size * buff_block_size;
}
dsc_sink_caps->slice_caps1.raw = dpcd_dsc_data[DP_DSC_SLICE_CAP_1 - DP_DSC_SUPPORT];
if (!dsc_line_buff_depth_from_dpcd(dpcd_dsc_data[DP_DSC_LINE_BUF_BIT_DEPTH - DP_DSC_SUPPORT], &dsc_sink_caps->lb_bit_depth))
return false;
dsc_sink_caps->is_block_pred_supported =
(dpcd_dsc_data[DP_DSC_BLK_PREDICTION_SUPPORT - DP_DSC_SUPPORT] & DP_DSC_BLK_PREDICTION_IS_SUPPORTED) != 0;
dsc_sink_caps->edp_max_bits_per_pixel =
dpcd_dsc_data[DP_DSC_MAX_BITS_PER_PIXEL_LOW - DP_DSC_SUPPORT] |
dpcd_dsc_data[DP_DSC_MAX_BITS_PER_PIXEL_HI - DP_DSC_SUPPORT] << 8;
dsc_sink_caps->color_formats.raw = dpcd_dsc_data[DP_DSC_DEC_COLOR_FORMAT_CAP - DP_DSC_SUPPORT];
dsc_sink_caps->color_depth.raw = dpcd_dsc_data[DP_DSC_DEC_COLOR_DEPTH_CAP - DP_DSC_SUPPORT];
{
int dpcd_throughput = dpcd_dsc_data[DP_DSC_PEAK_THROUGHPUT - DP_DSC_SUPPORT];
if (!dsc_throughput_from_dpcd(dpcd_throughput & DP_DSC_THROUGHPUT_MODE_0_MASK, &dsc_sink_caps->throughput_mode_0_mps))
return false;
dpcd_throughput = (dpcd_throughput & DP_DSC_THROUGHPUT_MODE_1_MASK) >> DP_DSC_THROUGHPUT_MODE_1_SHIFT;
if (!dsc_throughput_from_dpcd(dpcd_throughput, &dsc_sink_caps->throughput_mode_1_mps))
return false;
}
dsc_sink_caps->max_slice_width = dpcd_dsc_data[DP_DSC_MAX_SLICE_WIDTH - DP_DSC_SUPPORT] * 320;
dsc_sink_caps->slice_caps2.raw = dpcd_dsc_data[DP_DSC_SLICE_CAP_2 - DP_DSC_SUPPORT];
if (!dsc_bpp_increment_div_from_dpcd(dpcd_dsc_data[DP_DSC_BITS_PER_PIXEL_INC - DP_DSC_SUPPORT], &dsc_sink_caps->bpp_increment_div))
return false;
return true;
}
/* This module's internal functions */
static bool dsc_buff_block_size_from_dpcd(int dpcd_buff_block_size, int *buff_block_size)
{
switch (dpcd_buff_block_size) {
case DP_DSC_RC_BUF_BLK_SIZE_1:
*buff_block_size = 1024;
break;
case DP_DSC_RC_BUF_BLK_SIZE_4:
*buff_block_size = 4 * 1024;
break;
case DP_DSC_RC_BUF_BLK_SIZE_16:
*buff_block_size = 16 * 1024;
break;
case DP_DSC_RC_BUF_BLK_SIZE_64:
*buff_block_size = 64 * 1024;
break;
default: {
dm_error("%s: DPCD DSC buffer size not recoginzed.\n", __func__);
return false;
}
}
return true;
}
static bool dsc_line_buff_depth_from_dpcd(int dpcd_line_buff_bit_depth, int *line_buff_bit_depth)
{
if (0 <= dpcd_line_buff_bit_depth && dpcd_line_buff_bit_depth <= 7)
*line_buff_bit_depth = dpcd_line_buff_bit_depth + 9;
else if (dpcd_line_buff_bit_depth == 8)
*line_buff_bit_depth = 8;
else {
dm_error("%s: DPCD DSC buffer depth not recoginzed.\n", __func__);
return false;
}
return true;
}
static bool dsc_throughput_from_dpcd(int dpcd_throughput, int *throughput)
{
switch (dpcd_throughput) {
case DP_DSC_THROUGHPUT_MODE_0_340:
*throughput = 340;
break;
case DP_DSC_THROUGHPUT_MODE_0_400:
*throughput = 400;
break;
case DP_DSC_THROUGHPUT_MODE_0_450:
*throughput = 450;
break;
case DP_DSC_THROUGHPUT_MODE_0_500:
*throughput = 500;
break;
case DP_DSC_THROUGHPUT_MODE_0_550:
*throughput = 550;
break;
case DP_DSC_THROUGHPUT_MODE_0_600:
*throughput = 600;
break;
case DP_DSC_THROUGHPUT_MODE_0_650:
*throughput = 650;
break;
case DP_DSC_THROUGHPUT_MODE_0_700:
*throughput = 700;
break;
case DP_DSC_THROUGHPUT_MODE_0_750:
*throughput = 750;
break;
case DP_DSC_THROUGHPUT_MODE_0_800:
*throughput = 800;
break;
case DP_DSC_THROUGHPUT_MODE_0_850:
*throughput = 850;
break;
case DP_DSC_THROUGHPUT_MODE_0_900:
*throughput = 900;
break;
case DP_DSC_THROUGHPUT_MODE_0_950:
*throughput = 950;
break;
case DP_DSC_THROUGHPUT_MODE_0_1000:
*throughput = 1000;
break;
default: {
dm_error("%s: DPCD DSC througput mode not recoginzed.\n", __func__);
return false;
}
}
return true;
}
static bool dsc_bpp_increment_div_from_dpcd(int bpp_increment_dpcd, uint32_t *bpp_increment_div)
{
switch (bpp_increment_dpcd) {
case 0:
*bpp_increment_div = 16;
break;
case 1:
*bpp_increment_div = 8;
break;
case 2:
*bpp_increment_div = 4;
break;
case 3:
*bpp_increment_div = 2;
break;
case 4:
*bpp_increment_div = 1;
break;
default: {
dm_error("%s: DPCD DSC bits-per-pixel increment not recoginzed.\n", __func__);
return false;
}
}
return true;
}
#endif // CONFIG_DRM_AMD_DC_DSC_SUPPORT

4
include/drm/drm_dp_helper.h
View file

@ -249,6 +249,7 @@
#define DP_DSC_PEAK_THROUGHPUT 0x06B
# define DP_DSC_THROUGHPUT_MODE_0_MASK (0xf << 0)
# define DP_DSC_THROUGHPUT_MODE_0_SHIFT 0
# define DP_DSC_THROUGHPUT_MODE_0_UPSUPPORTED 0
# define DP_DSC_THROUGHPUT_MODE_0_340 (1 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_400 (2 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_450 (3 << 0)
@ -263,8 +264,10 @@
# define DP_DSC_THROUGHPUT_MODE_0_900 (12 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_950 (13 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_1000 (14 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_170 (15 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_MASK (0xf << 4)
# define DP_DSC_THROUGHPUT_MODE_1_SHIFT 4
# define DP_DSC_THROUGHPUT_MODE_1_UPSUPPORTED 0
# define DP_DSC_THROUGHPUT_MODE_1_340 (1 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_400 (2 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_450 (3 << 4)
@ -279,6 +282,7 @@
# define DP_DSC_THROUGHPUT_MODE_1_900 (12 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_950 (13 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_1000 (14 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_170 (15 << 4)
#define DP_DSC_MAX_SLICE_WIDTH 0x06C
#define DP_DSC_MIN_SLICE_WIDTH_VALUE 2560