On Fri, Dec 02, 2022 at 03:40:15PM +0530, Ankit Nautiyal wrote:
> The decision to use DFP output format conversion capabilities should be
> during compute_config phase.
>
> This patch adds new member to crtc_state to represent the final
> output_format to the sink. In case of a DFP this can be different than
> the output_format, as per the format conversion done via the PCON.
>
> This will help to store only the format conversion capabilities of the
> DP device in intel_dp->dfp, and use crtc_state to compute and store the
> configuration for color/format conversion for a given mode.
>
> v2: modified the new member to crtc_state to represent the final
> output_format that eaches the sink, after possible conversion by
> PCON kind of devices. (Ville)
>
> v3: Addressed comments from Ville:
> -Added comments to clarify difference between sink_format and
> output_format.
> -Corrected the order of setting sink_format and output_format.
> -Added readout for sink_format in get_pipe_config hooks.
>
> v4: Set sink_format for intel_sdvo too. (Ville)
>
> Signed-off-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
> Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com> (v3)
> ---
> drivers/gpu/drm/i915/display/icl_dsi.c | 1 +
> drivers/gpu/drm/i915/display/intel_crt.c | 1 +
> .../drm/i915/display/intel_crtc_state_dump.c | 5 +--
> drivers/gpu/drm/i915/display/intel_display.c | 5 +++
> .../drm/i915/display/intel_display_types.h | 11 +++++-
> drivers/gpu/drm/i915/display/intel_dp.c | 34 +++++++++++++------
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 1 +
> drivers/gpu/drm/i915/display/intel_dvo.c | 1 +
> drivers/gpu/drm/i915/display/intel_hdmi.c | 24 +++++++------
> drivers/gpu/drm/i915/display/intel_lvds.c | 1 +
> drivers/gpu/drm/i915/display/intel_sdvo.c | 1 +
> drivers/gpu/drm/i915/display/intel_tv.c | 1 +
> drivers/gpu/drm/i915/display/vlv_dsi.c | 1 +
> 13 files changed, 62 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c
> b/drivers/gpu/drm/i915/display/icl_dsi.c
> index d16b30a2dded..0ca0d23f42c6 100644
> --- a/drivers/gpu/drm/i915/display/icl_dsi.c
> +++ b/drivers/gpu/drm/i915/display/icl_dsi.c
> @@ -1667,6 +1667,7 @@ static int gen11_dsi_compute_config(struct
> intel_encoder *encoder,
> &pipe_config->hw.adjusted_mode;
> int ret;
>
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>
> ret = intel_panel_compute_config(intel_connector, adjusted_mode);
> diff --git a/drivers/gpu/drm/i915/display/intel_crt.c
> b/drivers/gpu/drm/i915/display/intel_crt.c
> index 797ad9489f7e..eb5964b3ff95 100644
> --- a/drivers/gpu/drm/i915/display/intel_crt.c
> +++ b/drivers/gpu/drm/i915/display/intel_crt.c
> @@ -393,6 +393,7 @@ static int intel_crt_compute_config(struct intel_encoder
> *encoder,
> if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
> return -EINVAL;
>
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>
> return 0;
> diff --git a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
> b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
> index e3273fe8ddac..9b61884851fc 100644
> --- a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
> +++ b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
> @@ -163,10 +163,11 @@ void intel_crtc_state_dump(const struct
> intel_crtc_state *pipe_config,
>
> snprintf_output_types(buf, sizeof(buf), pipe_config->output_types);
> drm_dbg_kms(&i915->drm,
> - "active: %s, output_types: %s (0x%x), output format: %s\n",
> + "active: %s, output_types: %s (0x%x), output format: %s,
> sink format: %s\n",
> str_yes_no(pipe_config->hw.active),
> buf, pipe_config->output_types,
> - output_formats(pipe_config->output_format));
> + output_formats(pipe_config->output_format),
> + output_formats(pipe_config->sink_format));
>
> drm_dbg_kms(&i915->drm,
> "cpu_transcoder: %s, pipe bpp: %i, dithering: %i\n",
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 32b257157186..789667e1b2cb 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -3242,6 +3242,7 @@ static bool i9xx_get_pipe_config(struct intel_crtc
> *crtc,
> return false;
>
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
> + pipe_config->sink_format = pipe_config->output_format;
> pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
> pipe_config->shared_dpll = NULL;
>
> @@ -3701,6 +3702,8 @@ static bool ilk_get_pipe_config(struct intel_crtc *crtc,
> break;
> }
>
> + pipe_config->sink_format = pipe_config->output_format;
> +
> pipe_config->gamma_mode = REG_FIELD_GET(PIPECONF_GAMMA_MODE_MASK_ILK,
> tmp);
>
> pipe_config->framestart_delay =
> REG_FIELD_GET(PIPECONF_FRAME_START_DELAY_MASK, tmp) + 1;
> @@ -4099,6 +4102,8 @@ static bool hsw_get_pipe_config(struct intel_crtc *crtc,
> bdw_get_pipemisc_output_format(crtc);
> }
>
> + pipe_config->sink_format = pipe_config->output_format;
> +
> pipe_config->gamma_mode = intel_de_read(dev_priv,
> GAMMA_MODE(crtc->pipe));
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index ff3ef37d099e..136866615223 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1267,9 +1267,18 @@ struct intel_crtc_state {
> /* HDMI High TMDS char rate ratio */
> bool hdmi_high_tmds_clock_ratio;
>
> - /* Output format RGB/YCBCR etc */
> + /*
> + * Output format RGB/YCBCR etc., that is coming out
> + * at the end of the pipe.
> + */
> enum intel_output_format output_format;
>
> + /*
> + * Sink output format RGB/YCBCR etc., that is going
> + * into the sink.
> + */
> + enum intel_output_format sink_format;
> +
> /* enable pipe gamma? */
> bool gamma_enable;
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 1607c86af025..3ec8a248a928 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -788,11 +788,12 @@ static u8 intel_dp_dsc_get_slice_count(struct intel_dp
> *intel_dp,
>
> static enum intel_output_format
> intel_dp_output_format(struct intel_connector *connector,
> - bool ycbcr_420_output)
> + enum intel_output_format sink_format)
> {
> struct intel_dp *intel_dp = intel_attached_dp(connector);
>
> - if (!connector->base.ycbcr_420_allowed || !ycbcr_420_output)
> + if (!connector->base.ycbcr_420_allowed ||
> + sink_format != INTEL_OUTPUT_FORMAT_YCBCR420)
> return INTEL_OUTPUT_FORMAT_RGB;
>
> if (intel_dp->dfp.rgb_to_ycbcr &&
> @@ -831,8 +832,14 @@ intel_dp_mode_min_output_bpp(struct intel_connector
> *connector,
> const struct drm_display_mode *mode)
> {
> const struct drm_display_info *info = &connector->base.display_info;
> - enum intel_output_format output_format =
> - intel_dp_output_format(connector, drm_mode_is_420_only(info,
> mode));
> + enum intel_output_format output_format, sink_format;
> +
> + if (drm_mode_is_420_only(info, mode))
> + sink_format = INTEL_OUTPUT_FORMAT_YCBCR420;
> + else
> + sink_format = INTEL_OUTPUT_FORMAT_RGB;
> +
> + output_format = intel_dp_output_format(connector, sink_format);
>
> return intel_dp_output_bpp(output_format,
> intel_dp_min_bpp(output_format));
> }
> @@ -1985,23 +1992,28 @@ intel_dp_compute_output_format(struct intel_encoder
> *encoder,
>
> ycbcr_420_only = drm_mode_is_420_only(info, adjusted_mode);
>
> - crtc_state->output_format = intel_dp_output_format(connector,
> ycbcr_420_only);
> -
> - if (ycbcr_420_only && !intel_dp_is_ycbcr420(intel_dp, crtc_state)) {
> + if (ycbcr_420_only && !connector->base.ycbcr_420_allowed) {
> drm_dbg_kms(&i915->drm,
> "YCbCr 4:2:0 mode but YCbCr 4:2:0 output not
> possible. Falling back to RGB.\n");
> - crtc_state->output_format = INTEL_OUTPUT_FORMAT_RGB;
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> + } else if (ycbcr_420_only) {
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_YCBCR420;
> + } else {
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> }
>
> + crtc_state->output_format = intel_dp_output_format(connector,
> crtc_state->sink_format);
> +
> ret = intel_dp_compute_link_config(encoder, crtc_state, conn_state,
> respect_downstream_limits);
> if (ret) {
> - if (intel_dp_is_ycbcr420(intel_dp, crtc_state) ||
> - !connector->base.ycbcr_420_allowed ||
Hmm. Where did that ycbcr_420_allowed check go? It seems we'll now try
to enable things thinking we can somehow output 4:2:0 when in fact we
can't. Same issue in the HDMI path.
> + if (crtc_state->sink_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
> !drm_mode_is_420_also(info, adjusted_mode))
> return ret;
>
> - crtc_state->output_format = intel_dp_output_format(connector,
> true);
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_YCBCR420;
> + crtc_state->output_format = intel_dp_output_format(connector,
> +
> crtc_state->sink_format);
> ret = intel_dp_compute_link_config(encoder, crtc_state,
> conn_state,
> respect_downstream_limits);
> }
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index 4077a979a924..e53e7ece624c 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -148,6 +148,7 @@ static int intel_dp_mst_compute_config(struct
> intel_encoder *encoder,
> if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
> return -EINVAL;
>
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->has_pch_encoder = false;
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dvo.c
> b/drivers/gpu/drm/i915/display/intel_dvo.c
> index 4aeae0f3ac91..68ba70751527 100644
> --- a/drivers/gpu/drm/i915/display/intel_dvo.c
> +++ b/drivers/gpu/drm/i915/display/intel_dvo.c
> @@ -271,6 +271,7 @@ static int intel_dvo_compute_config(struct intel_encoder
> *encoder,
> if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
> return -EINVAL;
>
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>
> return 0;
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
> b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index e82f8a07e2b0..0dd60bb9d7e8 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2190,13 +2190,13 @@ static bool intel_hdmi_has_audio(struct intel_encoder
> *encoder,
>
> static enum intel_output_format
> intel_hdmi_output_format(const struct intel_crtc_state *crtc_state,
> - struct intel_connector *connector,
> - bool ycbcr_420_output)
> + struct intel_connector *connector)
> {
> if (!crtc_state->has_hdmi_sink)
> return INTEL_OUTPUT_FORMAT_RGB;
>
> - if (connector->base.ycbcr_420_allowed && ycbcr_420_output)
> + if (connector->base.ycbcr_420_allowed &&
> + crtc_state->sink_format == INTEL_OUTPUT_FORMAT_YCBCR420)
> return INTEL_OUTPUT_FORMAT_YCBCR420;
> else
> return INTEL_OUTPUT_FORMAT_RGB;
> @@ -2214,23 +2214,25 @@ static int intel_hdmi_compute_output_format(struct
> intel_encoder *encoder,
> bool ycbcr_420_only = drm_mode_is_420_only(info, adjusted_mode);
> int ret;
>
> - crtc_state->output_format =
> - intel_hdmi_output_format(crtc_state, connector, ycbcr_420_only);
> -
> - if (ycbcr_420_only && !intel_hdmi_is_ycbcr420(crtc_state)) {
> + if (ycbcr_420_only && !connector->base.ycbcr_420_allowed) {
> drm_dbg_kms(&i915->drm,
> "YCbCr 4:2:0 mode but YCbCr 4:2:0 output not
> possible. Falling back to RGB.\n");
> - crtc_state->output_format = INTEL_OUTPUT_FORMAT_RGB;
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> + } else if (ycbcr_420_only) {
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_YCBCR420;
> + } else {
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> }
>
> + crtc_state->output_format = intel_hdmi_output_format(crtc_state,
> connector);
> ret = intel_hdmi_compute_clock(encoder, crtc_state,
> respect_downstream_limits);
> if (ret) {
> - if (intel_hdmi_is_ycbcr420(crtc_state) ||
> - !connector->base.ycbcr_420_allowed ||
> + if (crtc_state->sink_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
> !drm_mode_is_420_also(info, adjusted_mode))
> return ret;
>
> - crtc_state->output_format =
> intel_hdmi_output_format(crtc_state, connector, true);
> + crtc_state->sink_format = INTEL_OUTPUT_FORMAT_YCBCR420;
> + crtc_state->output_format =
> intel_hdmi_output_format(crtc_state, connector);
> ret = intel_hdmi_compute_clock(encoder, crtc_state,
> respect_downstream_limits);
> }
>
> diff --git a/drivers/gpu/drm/i915/display/intel_lvds.c
> b/drivers/gpu/drm/i915/display/intel_lvds.c
> index 7bf1bdfd03ec..ee526fef2276 100644
> --- a/drivers/gpu/drm/i915/display/intel_lvds.c
> +++ b/drivers/gpu/drm/i915/display/intel_lvds.c
> @@ -440,6 +440,7 @@ static int intel_lvds_compute_config(struct intel_encoder
> *intel_encoder,
> pipe_config->pipe_bpp = lvds_bpp;
> }
>
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>
> /*
> diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c
> b/drivers/gpu/drm/i915/display/intel_sdvo.c
> index 329b9d9af667..f6b09412da5a 100644
> --- a/drivers/gpu/drm/i915/display/intel_sdvo.c
> +++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
> @@ -1327,6 +1327,7 @@ static int intel_sdvo_compute_config(struct
> intel_encoder *encoder,
>
> DRM_DEBUG_KMS("forcing bpc to 8 for SDVO\n");
> pipe_config->pipe_bpp = 8*3;
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>
> if (HAS_PCH_SPLIT(to_i915(encoder->base.dev)))
> diff --git a/drivers/gpu/drm/i915/display/intel_tv.c
> b/drivers/gpu/drm/i915/display/intel_tv.c
> index b986bf075889..2a205a21d0c2 100644
> --- a/drivers/gpu/drm/i915/display/intel_tv.c
> +++ b/drivers/gpu/drm/i915/display/intel_tv.c
> @@ -1206,6 +1206,7 @@ intel_tv_compute_config(struct intel_encoder *encoder,
> if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
> return -EINVAL;
>
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>
> drm_dbg_kms(&dev_priv->drm, "forcing bpc to 8 for TV\n");
> diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c
> b/drivers/gpu/drm/i915/display/vlv_dsi.c
> index 84481030883a..1958774860dc 100644
> --- a/drivers/gpu/drm/i915/display/vlv_dsi.c
> +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
> @@ -280,6 +280,7 @@ static int intel_dsi_compute_config(struct intel_encoder
> *encoder,
> int ret;
>
> drm_dbg_kms(&dev_priv->drm, "\n");
> + pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>
> ret = intel_panel_compute_config(intel_connector, adjusted_mode);
> --
> 2.25.1
--
Ville Syrjälä
Intel
