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drm/amd/display: Line Buffer changes 

DCN 3x increased Line buffer size for DCHUB latency hiding, from 4 lines
of 4K resolution lines to 5 lines of 4K resolution lines. All Line
Buffer can be used as extended memory for P State change latency hiding.
The maximum number of lines is increased to 32 lines. Finally,
LB_MEMORY_CONFIG_1 (LB memory piece 1) and LB_MEMORY _CONFIG_2 (LB
memory piece 2) are not affected, no change in size, only 3 pieces is
affected, i.e., when all 3 pieces are used in both LB_MEMORY_CONFIG_0
and LB_MEMORY_CONFIG_3 (for 4:2:0) modes.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nevenko Stupar 2021-07-09 13:05:11 -04:00 committed by Alex Deucher
parent 6580b28e0c
commit 0f984c942c
4 changed files with 10 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c
View File

@ -217,6 +217,8 @@ static void dpp1_dscl_set_lb(
const struct line_buffer_params *lb_params,
enum lb_memory_config mem_size_config)
{
uint32_t max_partitions = 63; /* Currently hardcoded on all ASICs before DCN 3.2 */
/* LB */
if (dpp->base.caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT) {
/* DSCL caps: pixel data processed in fixed format */
@ -239,9 +241,12 @@ static void dpp1_dscl_set_lb(
LB_DATA_FORMAT__ALPHA_EN, lb_params->alpha_en); /* Alpha enable */
}
if (dpp->base.caps->max_lb_partitions == 31)
max_partitions = 31;
REG_SET_2(LB_MEMORY_CTRL, 0,
MEMORY_CONFIG, mem_size_config,
LB_MAX_PARTITIONS, 63);
LB_MAX_PARTITIONS, max_partitions);
}
static const uint16_t *dpp1_dscl_get_filter_coeffs_64p(int taps, struct fixed31_32 ratio)

16
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c
View File

@ -383,13 +383,6 @@ bool dpp3_get_optimal_number_of_taps(
int min_taps_y, min_taps_c;
enum lb_memory_config lb_config;
/* Some ASICs does not support FP16 scaling, so we reject modes require this*/
if (scl_data->viewport.width != scl_data->h_active &&
scl_data->viewport.height != scl_data->v_active &&
dpp->caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT &&
scl_data->format == PIXEL_FORMAT_FP16)
return false;
if (scl_data->viewport.width > scl_data->h_active &&
dpp->ctx->dc->debug.max_downscale_src_width != 0 &&
scl_data->viewport.width > dpp->ctx->dc->debug.max_downscale_src_width)
@ -1440,15 +1433,6 @@ bool dpp3_construct(
dpp->tf_shift = tf_shift;
dpp->tf_mask = tf_mask;
dpp->lb_pixel_depth_supported =
LB_PIXEL_DEPTH_18BPP |
LB_PIXEL_DEPTH_24BPP |
LB_PIXEL_DEPTH_30BPP |
LB_PIXEL_DEPTH_36BPP;
dpp->lb_bits_per_entry = LB_BITS_PER_ENTRY;
dpp->lb_memory_size = LB_TOTAL_NUMBER_OF_ENTRIES; /*0x1404*/
return true;
}

3
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.h
View File

@ -154,6 +154,7 @@
SRI(COLOR_KEYER_BLUE, CNVC_CFG, id), \
SRI(CURSOR_CONTROL, CURSOR0_, id),\
SRI(OBUF_MEM_PWR_CTRL, DSCL, id),\
SRI(DSCL_MEM_PWR_STATUS, DSCL, id), \
SRI(DSCL_MEM_PWR_CTRL, DSCL, id)
#define DPP_REG_LIST_DCN30(id)\
@ -163,8 +164,6 @@
SRI(CM_SHAPER_LUT_DATA, CM, id),\
SRI(CM_MEM_PWR_CTRL2, CM, id), \
SRI(CM_MEM_PWR_STATUS2, CM, id), \
SRI(DSCL_MEM_PWR_STATUS, DSCL, id), \
SRI(DSCL_MEM_PWR_CTRL, DSCL, id), \
SRI(CM_BLNDGAM_RAMA_START_SLOPE_CNTL_B, CM, id),\
SRI(CM_BLNDGAM_RAMA_START_SLOPE_CNTL_G, CM, id),\
SRI(CM_BLNDGAM_RAMA_START_SLOPE_CNTL_R, CM, id),\

3
drivers/gpu/drm/amd/display/dc/inc/hw/transform.h
View File

@ -289,6 +289,9 @@ struct dpp_caps {
/* DSCL processing pixel data in fixed or float format */
enum dscl_data_processing_format dscl_data_proc_format;
/* max LB partitions */
unsigned int max_lb_partitions;
/* Calculates the number of partitions in the line buffer.
* The implementation of this function is overloaded for
* different versions of DSCL LB.