From: Mohit Bawa <[email protected]> why: dcn35 currently uses a hardcoded DSC display clock value which is incorrect for some asic types. Newer DCN versions retrieve dsc display clock from clk_mgr. The same can be done for dcn35.
how: Refactor the DSC cap calculation using pre-existing logic. Handle ODM combine requirements in dc_dsc.c. Replace hardcoded display clock with actual value retrieved from clk_mgr. Reviewed-by: Nicholas Kazlauskas <[email protected]> Reviewed-by: Charlene Liu <[email protected]> Reviewed-by: Wenjing Liu <[email protected]> Signed-off-by: Mohit Bawa <[email protected]> Signed-off-by: Fangzhi Zuo <[email protected]> --- .../display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c | 30 ++++++++++++++++++ .../drm/amd/display/dc/dsc/dcn35/dcn35_dsc.c | 31 ++++++++++++++++++- 2 files changed, 60 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c index 35d20a663d67..dfd0c9505af0 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c @@ -1295,6 +1295,35 @@ static void dcn35_update_clocks_fpga(struct clk_mgr *clk_mgr, dcn35_update_clocks_update_dtb_dto(clk_mgr_int, context, clk_mgr->clks.ref_dtbclk_khz); } +static unsigned int dcn35_get_max_clock_khz(struct clk_mgr *clk_mgr_base, enum clk_type clk_type) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + + unsigned int num_clk_levels; + + switch (clk_type) { + case CLK_TYPE_DISPCLK: + num_clk_levels = clk_mgr->base.bw_params->clk_table.num_entries_per_clk.num_dispclk_levels; + return num_clk_levels ? + clk_mgr->base.bw_params->clk_table.entries[num_clk_levels - 1].dispclk_mhz * 1000 : + clk_mgr->base.boot_snapshot.dispclk; + case CLK_TYPE_DPPCLK: + num_clk_levels = clk_mgr->base.bw_params->clk_table.num_entries_per_clk.num_dppclk_levels; + return num_clk_levels ? + clk_mgr->base.bw_params->clk_table.entries[num_clk_levels - 1].dppclk_mhz * 1000 : + clk_mgr->base.boot_snapshot.dppclk; + case CLK_TYPE_DSCCLK: + num_clk_levels = clk_mgr->base.bw_params->clk_table.num_entries_per_clk.num_dispclk_levels; + return num_clk_levels ? + clk_mgr->base.bw_params->clk_table.entries[num_clk_levels - 1].dispclk_mhz * 1000 / 3 : + clk_mgr->base.boot_snapshot.dispclk / 3; + default: + break; + } + + return 0; +} + static struct clk_mgr_funcs dcn35_funcs = { .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz, .get_dtb_ref_clk_frequency = dcn31_get_dtb_ref_freq_khz, @@ -1306,6 +1335,7 @@ static struct clk_mgr_funcs dcn35_funcs = { .set_low_power_state = dcn35_set_low_power_state, .exit_low_power_state = dcn35_exit_low_power_state, .is_ips_supported = dcn35_is_ips_supported, + .get_max_clock_khz = dcn35_get_max_clock_khz, }; struct clk_mgr_funcs dcn35_fpga_funcs = { diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dcn35/dcn35_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dcn35/dcn35_dsc.c index f9c6377ac66c..e712985f7abd 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dcn35/dcn35_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dcn35/dcn35_dsc.c @@ -28,9 +28,9 @@ #include "reg_helper.h" static void dsc35_enable(struct display_stream_compressor *dsc, int opp_pipe); +static void dsc35_get_single_enc_caps(struct dsc_enc_caps *dsc_enc_caps, unsigned int max_dscclk_khz); static const struct dsc_funcs dcn35_dsc_funcs = { - .dsc_get_enc_caps = dsc2_get_enc_caps, .dsc_read_state = dsc2_read_state, .dsc_read_reg_state = dsc2_read_reg_state, .dsc_validate_stream = dsc2_validate_stream, @@ -40,6 +40,7 @@ static const struct dsc_funcs dcn35_dsc_funcs = { .dsc_disable = dsc2_disable, .dsc_disconnect = dsc2_disconnect, .dsc_wait_disconnect_pending_clear = dsc2_wait_disconnect_pending_clear, + .dsc_get_single_enc_caps = dsc35_get_single_enc_caps, }; /* Macro definitios for REG_SET macros*/ @@ -111,3 +112,31 @@ void dsc35_set_fgcg(struct dcn20_dsc *dsc20, bool enable) { REG_UPDATE(DSC_TOP_CONTROL, DSC_FGCG_REP_DIS, !enable); } + +void dsc35_get_single_enc_caps(struct dsc_enc_caps *dsc_enc_caps, unsigned int max_dscclk_khz) +{ + dsc_enc_caps->dsc_version = 0x21; /* v1.2 - DP spec defined it in reverse order and we kept it */ + + dsc_enc_caps->slice_caps.bits.NUM_SLICES_1 = 1; + dsc_enc_caps->slice_caps.bits.NUM_SLICES_2 = 1; + dsc_enc_caps->slice_caps.bits.NUM_SLICES_3 = 1; + dsc_enc_caps->slice_caps.bits.NUM_SLICES_4 = 1; + + dsc_enc_caps->lb_bit_depth = 13; + dsc_enc_caps->is_block_pred_supported = true; + + dsc_enc_caps->color_formats.bits.RGB = 1; + dsc_enc_caps->color_formats.bits.YCBCR_444 = 1; + dsc_enc_caps->color_formats.bits.YCBCR_SIMPLE_422 = 1; + dsc_enc_caps->color_formats.bits.YCBCR_NATIVE_422 = 0; + dsc_enc_caps->color_formats.bits.YCBCR_NATIVE_420 = 1; + + dsc_enc_caps->color_depth.bits.COLOR_DEPTH_8_BPC = 1; + dsc_enc_caps->color_depth.bits.COLOR_DEPTH_10_BPC = 1; + dsc_enc_caps->color_depth.bits.COLOR_DEPTH_12_BPC = 1; + + dsc_enc_caps->max_total_throughput_mps = max_dscclk_khz * 3 / 1000; + + dsc_enc_caps->max_slice_width = 5184; /* (including 64 overlap pixels for eDP MSO mode) */ + dsc_enc_caps->bpp_increment_div = 16; /* 1/16th of a bit */ +} -- 2.43.0
