From: Iswara Nagulendran Date: Wed, 11 Dec 2024 22:19:42 +0000 (-0500) Subject: drm/amd/display: Add VC for VESA Aux Backlight Control X-Git-Tag: v6.14-rc1~174^2~2^2~54 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d566fc42c0d33fea79bd8896ae6e77df67ae1ac8;p=thirdparty%2Flinux.git drm/amd/display: Add VC for VESA Aux Backlight Control [WHY] There is no way to distinguish the static backlight control type being used and the VABC support without the use of a debugger or reading DPCD registers. [HOW] Add Visual Confirm support for VESA Aux-based Backlight Control. Reviewed-by: Harry Vanzylldejong Signed-off-by: Iswara Nagulendran Signed-off-by: Roman Li Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 08d35d9da4431..76c36374de671 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1236,6 +1236,8 @@ static void dc_update_visual_confirm_color(struct dc *dc, struct dc_state *conte get_mclk_switch_visual_confirm_color(pipe_ctx, &(pipe_ctx->visual_confirm_color)); else if (dc->debug.visual_confirm == VISUAL_CONFIRM_FAMS2) get_fams2_visual_confirm_color(dc, context, pipe_ctx, &(pipe_ctx->visual_confirm_color)); + else if (dc->debug.visual_confirm == VISUAL_CONFIRM_VABC) + get_vabc_visual_confirm_color(pipe_ctx, &(pipe_ctx->visual_confirm_color)); } } } diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c index 252af83e34a53..6eb9bae3af912 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c @@ -425,6 +425,44 @@ void get_hdr_visual_confirm_color( } } +/* Visual Confirm color definition for VABC */ +void get_vabc_visual_confirm_color( + struct pipe_ctx *pipe_ctx, + struct tg_color *color) +{ + uint32_t color_value = MAX_TG_COLOR_VALUE; + struct dc_link *edp_link = NULL; + + if (pipe_ctx && pipe_ctx->stream && pipe_ctx->stream->link) { + if (pipe_ctx->stream->link->connector_signal == SIGNAL_TYPE_EDP) + edp_link = pipe_ctx->stream->link; + } + + if (edp_link) { + switch (edp_link->backlight_control_type) { + case BACKLIGHT_CONTROL_PWM: + color->color_r_cr = color_value; + color->color_g_y = 0; + color->color_b_cb = 0; + break; + case BACKLIGHT_CONTROL_AMD_AUX: + color->color_r_cr = 0; + color->color_g_y = color_value; + color->color_b_cb = 0; + break; + case BACKLIGHT_CONTROL_VESA_AUX: + color->color_r_cr = 0; + color->color_g_y = 0; + color->color_b_cb = color_value; + break; + } + } else { + color->color_r_cr = 0; + color->color_g_y = 0; + color->color_b_cb = 0; + } +} + void get_subvp_visual_confirm_color( struct pipe_ctx *pipe_ctx, struct tg_color *color) diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 2e4200d5145f7..5b32c447da98c 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -489,6 +489,7 @@ enum visual_confirm { VISUAL_CONFIRM_MCLK_SWITCH = 16, VISUAL_CONFIRM_FAMS2 = 19, VISUAL_CONFIRM_HW_CURSOR = 20, + VISUAL_CONFIRM_VABC = 21, }; enum dc_psr_power_opts { diff --git a/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h index a5bb10d7b1603..98d85c7ab3fa5 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h @@ -194,7 +194,6 @@ enum block_sequence_func { DMUB_SUBVP_SAVE_SURF_ADDR, HUBP_WAIT_FOR_DCC_META_PROP, DMUB_FAMS2_GLOBAL_CONTROL_LOCK_FAST, - }; struct block_sequence { @@ -485,11 +484,12 @@ void get_hdr_visual_confirm_color( void get_mpctree_visual_confirm_color( struct pipe_ctx *pipe_ctx, struct tg_color *color); - +void get_vabc_visual_confirm_color( + struct pipe_ctx *pipe_ctx, + struct tg_color *color); void get_subvp_visual_confirm_color( struct pipe_ctx *pipe_ctx, struct tg_color *color); - void get_fams2_visual_confirm_color( struct dc *dc, struct dc_state *context,