6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Harry Wentland harry.wentland@amd.com
[ Upstream commit 27fc10d1095f7a7de7c917638d7134033a190dd8 ]
The shaper LUT requires a 10-bit value of the delta between segments. We were using dc_fixpt_clamp_u0d10() to do that but it doesn't do what we want it to do. It will preserve 10-bit precision after the decimal point, but that's not quite what we want. We want 14-bit precision and discard the 4 most-significant bytes.
To do that we'll do dc_fixpt_clamp_u0d14() & 0x3ff instead.
Tested-by: Daniel Wheeler daniel.wheeler@amd.com Reviewed-by: Krunoslav Kovac krunoslav.kovac@amd.com Acked-by: Rodrigo Siqueira rodrigo.siqueira@amd.com Signed-off-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Stable-dep-of: 6f395cebdd89 ("drm/amd/display: Fix MPCC 1DLUT programming") Signed-off-by: Sasha Levin sashal@kernel.org --- .../amd/display/dc/dcn10/dcn10_cm_common.c | 19 +++++++++++++++---- .../amd/display/dc/dcn10/dcn10_cm_common.h | 1 + .../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 2 +- .../drm/amd/display/dc/dcn20/dcn20_hwseq.c | 6 +++--- .../drm/amd/display/dc/dcn30/dcn30_dwb_cm.c | 2 +- .../drm/amd/display/dc/dcn30/dcn30_hwseq.c | 2 +- .../drm/amd/display/dc/dcn32/dcn32_hwseq.c | 6 +++--- 7 files changed, 25 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c index 7a00fe525dfba..3538973bd0c6c 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c @@ -308,7 +308,10 @@ bool cm_helper_convert_to_custom_float( #define NUMBER_REGIONS 32 #define NUMBER_SW_SEGMENTS 16
-bool cm_helper_translate_curve_to_hw_format( +#define DC_LOGGER \ + ctx->logger + +bool cm_helper_translate_curve_to_hw_format(struct dc_context *ctx, const struct dc_transfer_func *output_tf, struct pwl_params *lut_params, bool fixpoint) { @@ -482,10 +485,18 @@ bool cm_helper_translate_curve_to_hw_format( rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green); rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
+ if (fixpoint == true) { - rgb->delta_red_reg = dc_fixpt_clamp_u0d10(rgb->delta_red); - rgb->delta_green_reg = dc_fixpt_clamp_u0d10(rgb->delta_green); - rgb->delta_blue_reg = dc_fixpt_clamp_u0d10(rgb->delta_blue); + uint32_t red_clamp = dc_fixpt_clamp_u0d14(rgb->delta_red); + uint32_t green_clamp = dc_fixpt_clamp_u0d14(rgb->delta_green); + uint32_t blue_clamp = dc_fixpt_clamp_u0d14(rgb->delta_blue); + + if (red_clamp >> 10 || green_clamp >> 10 || blue_clamp >> 10) + DC_LOG_WARNING("Losing delta precision while programming shaper LUT."); + + rgb->delta_red_reg = red_clamp & 0x3ff; + rgb->delta_green_reg = green_clamp & 0x3ff; + rgb->delta_blue_reg = blue_clamp & 0x3ff; rgb->red_reg = dc_fixpt_clamp_u0d14(rgb->red); rgb->green_reg = dc_fixpt_clamp_u0d14(rgb->green); rgb->blue_reg = dc_fixpt_clamp_u0d14(rgb->blue); diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.h index 3b8cd7410498a..0a68b63d61260 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.h +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.h @@ -106,6 +106,7 @@ bool cm_helper_convert_to_custom_float( bool fixpoint);
bool cm_helper_translate_curve_to_hw_format( + struct dc_context *ctx, const struct dc_transfer_func *output_tf, struct pwl_params *lut_params, bool fixpoint);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 3940271189632..d84579da64003 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1867,7 +1867,7 @@ bool dcn10_set_output_transfer_func(struct dc *dc, struct pipe_ctx *pipe_ctx, /* dcn10_translate_regamma_to_hw_format takes 750us, only do it when full * update. */ - else if (cm_helper_translate_curve_to_hw_format( + else if (cm_helper_translate_curve_to_hw_format(dc->ctx, stream->out_transfer_func, &dpp->regamma_params, false)) { dpp->funcs->dpp_program_regamma_pwl( diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index fbc188812ccc9..9bd6a5716cdc1 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -843,7 +843,7 @@ bool dcn20_set_output_transfer_func(struct dc *dc, struct pipe_ctx *pipe_ctx, params = &stream->out_transfer_func->pwl; else if (pipe_ctx->stream->out_transfer_func->type == TF_TYPE_DISTRIBUTED_POINTS && - cm_helper_translate_curve_to_hw_format( + cm_helper_translate_curve_to_hw_format(dc->ctx, stream->out_transfer_func, &mpc->blender_params, false)) params = &mpc->blender_params; @@ -872,7 +872,7 @@ bool dcn20_set_blend_lut( if (plane_state->blend_tf->type == TF_TYPE_HWPWL) blend_lut = &plane_state->blend_tf->pwl; else if (plane_state->blend_tf->type == TF_TYPE_DISTRIBUTED_POINTS) { - cm_helper_translate_curve_to_hw_format( + cm_helper_translate_curve_to_hw_format(plane_state->ctx, plane_state->blend_tf, &dpp_base->regamma_params, false); blend_lut = &dpp_base->regamma_params; @@ -894,7 +894,7 @@ bool dcn20_set_shaper_3dlut( if (plane_state->in_shaper_func->type == TF_TYPE_HWPWL) shaper_lut = &plane_state->in_shaper_func->pwl; else if (plane_state->in_shaper_func->type == TF_TYPE_DISTRIBUTED_POINTS) { - cm_helper_translate_curve_to_hw_format( + cm_helper_translate_curve_to_hw_format(plane_state->ctx, plane_state->in_shaper_func, &dpp_base->shaper_params, true); shaper_lut = &dpp_base->shaper_params; diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c index 6a3d3a0ec0a36..701c7d8bc038a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c @@ -280,7 +280,7 @@ bool dwb3_ogam_set_input_transfer_func( dwb_ogam_lut = kzalloc(sizeof(*dwb_ogam_lut), GFP_KERNEL);
if (dwb_ogam_lut) { - cm_helper_translate_curve_to_hw_format( + cm_helper_translate_curve_to_hw_format(dwbc->ctx, in_transfer_func_dwb_ogam, dwb_ogam_lut, false);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c index 07691b487e28c..53262f6bc40b0 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c @@ -107,7 +107,7 @@ static bool dcn30_set_mpc_shaper_3dlut(struct pipe_ctx *pipe_ctx, if (stream->func_shaper->type == TF_TYPE_HWPWL) { shaper_lut = &stream->func_shaper->pwl; } else if (stream->func_shaper->type == TF_TYPE_DISTRIBUTED_POINTS) { - cm_helper_translate_curve_to_hw_format(stream->func_shaper, + cm_helper_translate_curve_to_hw_format(stream->ctx, stream->func_shaper, &dpp_base->shaper_params, true); shaper_lut = &dpp_base->shaper_params; } diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c index 50b3547977281..f69e7d748e68b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c @@ -530,7 +530,7 @@ static bool dcn32_set_mpc_shaper_3dlut( if (stream->func_shaper->type == TF_TYPE_HWPWL) shaper_lut = &stream->func_shaper->pwl; else if (stream->func_shaper->type == TF_TYPE_DISTRIBUTED_POINTS) { - cm_helper_translate_curve_to_hw_format( + cm_helper_translate_curve_to_hw_format(stream->ctx, stream->func_shaper, &dpp_base->shaper_params, true); shaper_lut = &dpp_base->shaper_params; @@ -566,7 +566,7 @@ bool dcn32_set_mcm_luts( if (plane_state->blend_tf->type == TF_TYPE_HWPWL) lut_params = &plane_state->blend_tf->pwl; else if (plane_state->blend_tf->type == TF_TYPE_DISTRIBUTED_POINTS) { - cm_helper_translate_curve_to_hw_format( + cm_helper_translate_curve_to_hw_format(plane_state->ctx, plane_state->blend_tf, &dpp_base->regamma_params, false); lut_params = &dpp_base->regamma_params; @@ -581,7 +581,7 @@ bool dcn32_set_mcm_luts( else if (plane_state->in_shaper_func->type == TF_TYPE_DISTRIBUTED_POINTS) { // TODO: dpp_base replace ASSERT(false); - cm_helper_translate_curve_to_hw_format( + cm_helper_translate_curve_to_hw_format(plane_state->ctx, plane_state->in_shaper_func, &dpp_base->shaper_params, true); lut_params = &dpp_base->shaper_params;