The patch below does not apply to the 6.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.10.y git checkout FETCH_HEAD git cherry-pick -x c2ed7002c0614c5eab6c8f62a7a76be5df5805cf # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024100126-uncloak-exception-4276@gregkh' --subject-prefix 'PATCH 6.10.y' HEAD^..

Possible dependencies:

c2ed7002c061 ("drm/amd/display: Use SDR white level to calculate matrix coefficients") 8a060e9c17d0 ("drm/amd/display: disable sharpness if HDR Multiplier is too large") 1b0ce903fe74 ("drm/amd/display: add improvements for text display and HDR DWM and MPO") 6efc0ab3b05d ("drm/amd/display: add back quality EASF and ISHARP and dc dependency changes") 85ecfdda063b ("drm/amd/display: Re-order enum in a header file") f9e675988886 ("drm/amd/display: roll back quality EASF and ISHARP and dc dependency changes") f82200703434 ("drm/amd/display: remove dc dependencies from SPL library") 5f30ee493044 ("drm/amd/display: quality improvements for EASF and ISHARP") bbd0d1c942cb ("drm/amd/display: Fix possible overflow in integer multiplication") a00e85713c37 ("drm/amd/display: Update DML2.1 generated code") 2998bccfa419 ("drm/amd/display: Enable ISHARP support for DCN401") 7a1dd866c5ac ("drm/amd/display: enable EASF support for DCN40") bd051aa2fcfb ("drm/amd/display: Find max flickerless instant vtotal delta") bc19b490c00f ("drm/amd/display: Fix spelling various spelling mistakes") 01d6606beca0 ("drm/amd/display: re-indent dpp401_dscl_program_isharp()") dc2be9c68ffb ("drm/amd/display: Block FPO According to Luminance Delta") 00c391102abc ("drm/amd/display: Add misc DC changes for DCN401") da87132f641e ("drm/amd/display: Add some DCN401 reg name to macro definitions") 70839da63605 ("drm/amd/display: Add new DCN401 sources")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From c2ed7002c0614c5eab6c8f62a7a76be5df5805cf Mon Sep 17 00:00:00 2001 From: Samson Tam Samson.Tam@amd.com Date: Fri, 23 Aug 2024 16:57:33 -0400 Subject: [PATCH] drm/amd/display: Use SDR white level to calculate matrix coefficients

[WHY] Certain profiles have higher HDR multiplier than SDR white level max which is not currently supported.

[HOW] Use SDR white level when calculating matrix coefficients for HDR RGB MPO path instead of HDR multiplier.

Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Reviewed-by: Jun Lei jun.lei@amd.com Signed-off-by: Samson Tam Samson.Tam@amd.com Signed-off-by: Alex Hung alex.hung@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index ae788154896c..243928b0a39f 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -2596,6 +2596,12 @@ static enum surface_update_type det_surface_update(const struct dc *dc, elevate_update_type(&overall_type, UPDATE_TYPE_MED); }

+ if (u->sdr_white_level_nits) + if (u->sdr_white_level_nits != u->surface->sdr_white_level_nits) { + update_flags->bits.sdr_white_level_nits = 1; + elevate_update_type(&overall_type, UPDATE_TYPE_FULL); + } + if (u->cm2_params) { if ((u->cm2_params->component_settings.shaper_3dlut_setting != u->surface->mcm_shaper_3dlut_setting) @@ -2876,6 +2882,10 @@ static void copy_surface_update_to_plane( surface->hdr_mult = srf_update->hdr_mult;

+ if (srf_update->sdr_white_level_nits) + surface->sdr_white_level_nits = + srf_update->sdr_white_level_nits; + if (srf_update->blend_tf) memcpy(&surface->blend_tf, srf_update->blend_tf, sizeof(surface->blend_tf)); @@ -4679,6 +4689,8 @@ static bool full_update_required(struct dc *dc, srf_updates[i].scaling_info || (srf_updates[i].hdr_mult.value && srf_updates[i].hdr_mult.value != srf_updates->surface->hdr_mult.value) || + (srf_updates[i].sdr_white_level_nits && + srf_updates[i].sdr_white_level_nits != srf_updates->surface->sdr_white_level_nits) || srf_updates[i].in_transfer_func || srf_updates[i].func_shaper || srf_updates[i].lut3d_func || diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 4c94dd38be4b..dcf8a90e961d 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -1269,6 +1269,7 @@ union surface_update_flags { uint32_t tmz_changed:1; uint32_t mcm_transfer_function_enable_change:1; /* disable or enable MCM transfer func */ uint32_t full_update:1; + uint32_t sdr_white_level_nits:1; } bits;

uint32_t raw; @@ -1351,6 +1352,7 @@ struct dc_plane_state { bool adaptive_sharpness_en; int sharpness_level; enum linear_light_scaling linear_light_scaling; + unsigned int sdr_white_level_nits; };

struct dc_plane_info { @@ -1508,6 +1510,7 @@ struct dc_surface_update { */ struct dc_cm2_parameters *cm2_params; const struct dc_csc_transform *cursor_csc_color_matrix; + unsigned int sdr_white_level_nits; };

/* diff --git a/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c b/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c index cd6de93eb91c..f711fc2e3e65 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c +++ b/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c @@ -191,14 +191,7 @@ void translate_SPL_in_params_from_pipe_ctx(struct pipe_ctx *pipe_ctx, struct spl */ spl_in->is_fullscreen = dm_helpers_is_fullscreen(pipe_ctx->stream->ctx, pipe_ctx->stream); spl_in->is_hdr_on = dm_helpers_is_hdr_on(pipe_ctx->stream->ctx, pipe_ctx->stream); - spl_in->hdr_multx100 = 0; - if (spl_in->is_hdr_on) { - spl_in->hdr_multx100 = (uint32_t)dc_fixpt_floor(dc_fixpt_mul(plane_state->hdr_mult, - dc_fixpt_from_int(100))); - /* Disable sharpness for HDR Mult > 6.0 */ - if (spl_in->hdr_multx100 > 600) - spl_in->adaptive_sharpness.enable = false; - } + spl_in->sdr_white_level_nits = plane_state->sdr_white_level_nits; }

/// @brief Translate SPL output parameters to pipe context diff --git a/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c b/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c index 15f7eda903e6..a59aa6b59687 100644 --- a/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c +++ b/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c @@ -1155,14 +1155,19 @@ static void spl_set_dscl_prog_data(struct spl_in *spl_in, struct spl_scratch *sp }

/* Calculate C0-C3 coefficients based on HDR_mult */ -static void spl_calculate_c0_c3_hdr(struct dscl_prog_data *dscl_prog_data, uint32_t hdr_multx100) +static void spl_calculate_c0_c3_hdr(struct dscl_prog_data *dscl_prog_data, uint32_t sdr_white_level_nits) { struct spl_fixed31_32 hdr_mult, c0_mult, c1_mult, c2_mult; struct spl_fixed31_32 c0_calc, c1_calc, c2_calc; struct spl_custom_float_format fmt; + uint32_t hdr_multx100_int;

- SPL_ASSERT(hdr_multx100); - hdr_mult = spl_fixpt_from_fraction((long long)hdr_multx100, 100LL); + if ((sdr_white_level_nits >= 80) && (sdr_white_level_nits <= 480)) + hdr_multx100_int = sdr_white_level_nits * 100 / 80; + else + hdr_multx100_int = 100; /* default for 80 nits otherwise */ + + hdr_mult = spl_fixpt_from_fraction((long long)hdr_multx100_int, 100LL); c0_mult = spl_fixpt_from_fraction(2126LL, 10000LL); c1_mult = spl_fixpt_from_fraction(7152LL, 10000LL); c2_mult = spl_fixpt_from_fraction(722LL, 10000LL); @@ -1191,7 +1196,7 @@ static void spl_calculate_c0_c3_hdr(struct dscl_prog_data *dscl_prog_data, uint3 static void spl_set_easf_data(struct spl_scratch *spl_scratch, struct spl_out *spl_out, bool enable_easf_v, bool enable_easf_h, enum linear_light_scaling lls_pref, enum spl_pixel_format format, enum system_setup setup, - uint32_t hdr_multx100) + uint32_t sdr_white_level_nits) { struct dscl_prog_data *dscl_prog_data = spl_out->dscl_prog_data; if (enable_easf_v) { @@ -1499,7 +1504,7 @@ static void spl_set_easf_data(struct spl_scratch *spl_scratch, struct spl_out *s dscl_prog_data->easf_ltonl_en = 1; // Linear input if ((setup == HDR_L) && (spl_is_rgb8(format))) { /* Calculate C0-C3 coefficients based on HDR multiplier */ - spl_calculate_c0_c3_hdr(dscl_prog_data, hdr_multx100); + spl_calculate_c0_c3_hdr(dscl_prog_data, sdr_white_level_nits); } else { // HDR_L ( DWM ) and SDR_L dscl_prog_data->easf_matrix_c0 = 0x4EF7; // fp1.5.10, C0 coefficient (LN_rec709: 0.2126 * (2^14)/125 = 27.86590720) @@ -1750,7 +1755,7 @@ bool spl_calculate_scaler_params(struct spl_in *spl_in, struct spl_out *spl_out)

// Set EASF spl_set_easf_data(&spl_scratch, spl_out, enable_easf_v, enable_easf_h, spl_in->lls_pref, - spl_in->basic_in.format, setup, spl_in->hdr_multx100); + spl_in->basic_in.format, setup, spl_in->sdr_white_level_nits);

// Set iSHARP vratio = spl_fixpt_ceil(spl_scratch.scl_data.ratios.vert); diff --git a/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h b/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h index 85b19ebe2c57..74f2a8c42f4f 100644 --- a/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h +++ b/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h @@ -518,7 +518,7 @@ struct spl_in { bool is_hdr_on; int h_active; int v_active; - int hdr_multx100; + int sdr_white_level_nits; }; // end of SPL inputs