On Wed, Feb 12, 2020 at 06:17:33PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Fix skl_update_scaler_crtc() to deal with different scaling
> modes correctly. The current implementation assumes
> DRM_MODE_SCALE_FULLSCREEN. Fortunately we don't expose any
> border properties currently so the code does actually end
> up doing the right thing (assigning a scaler for pfit).
> The code does need to be fixed before any borders are
> exposed.
>
> Also we have redundant calls to skl_update_scaler_crtc() in
> dp/hdmi .compute_config() which can be nuked. They were anyway
> called before we had even computed the pfit state so were
> basically nonsense. The real call we need to keep is in
> intel_crtc_atomic_check().
>
> v2: Deal witrh skl_update_scaler_crtc() in intel_dp_ycbcr420_config()
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Just keeping the call in intel_crtc_atomic_check() looks good
Reviewed-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Manasi
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 40 ++++++++++----------
> drivers/gpu/drm/i915/display/intel_display.h | 1 -
> drivers/gpu/drm/i915/display/intel_dp.c | 15 --------
> drivers/gpu/drm/i915/display/intel_hdmi.c | 6 ---
> 4 files changed, 19 insertions(+), 43 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index de50aa0b076c..becc6322b7dc 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -6101,30 +6101,28 @@ skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
> return 0;
> }
>
> -/**
> - * skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
> - *
> - * @state: crtc's scaler state
> - *
> - * Return
> - * 0 - scaler_usage updated successfully
> - * error - requested scaling cannot be supported or other error condition
> - */
> -int skl_update_scaler_crtc(struct intel_crtc_state *state)
> +static int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state)
> {
> - const struct drm_display_mode *adjusted_mode = &state->hw.adjusted_mode;
> - bool need_scaler = false;
> + const struct drm_display_mode *adjusted_mode =
> + &crtc_state->hw.adjusted_mode;
> + int width, height;
>
> - if (state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
> - state->pch_pfit.enabled)
> - need_scaler = true;
> + if (crtc_state->pch_pfit.enabled) {
> + u32 pfit_size = crtc_state->pch_pfit.size;
> +
> + width = pfit_size >> 16;
> + height = pfit_size & 0xffff;
> + } else {
> + width = adjusted_mode->crtc_hdisplay;
> + height = adjusted_mode->crtc_vdisplay;
> + }
>
> - return skl_update_scaler(state, !state->hw.active, SKL_CRTC_INDEX,
> - &state->scaler_state.scaler_id,
> - state->pipe_src_w, state->pipe_src_h,
> - adjusted_mode->crtc_hdisplay,
> - adjusted_mode->crtc_vdisplay, NULL, 0,
> - need_scaler);
> + return skl_update_scaler(crtc_state, !crtc_state->hw.active,
> + SKL_CRTC_INDEX,
> + &crtc_state->scaler_state.scaler_id,
> + crtc_state->pipe_src_w, crtc_state->pipe_src_h,
> + width, height, NULL, 0,
> + crtc_state->pch_pfit.enabled);
> }
>
> /**
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
> index 75438a136d58..6291d3dbc513 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -584,7 +584,6 @@ void intel_crtc_arm_fifo_underrun(struct intel_crtc *crtc,
> struct intel_crtc_state *crtc_state);
>
> u16 skl_scaler_calc_phase(int sub, int scale, bool chroma_center);
> -int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
> void skl_scaler_disable(const struct intel_crtc_state *old_crtc_state);
> void ilk_pfit_disable(const struct intel_crtc_state *old_crtc_state);
> u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index f4dede6253f8..a827eac8acc2 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2307,7 +2307,6 @@ intel_dp_ycbcr420_config(struct intel_dp *intel_dp,
> const struct drm_display_mode *adjusted_mode =
> &crtc_state->hw.adjusted_mode;
> struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - int ret;
>
> if (!drm_mode_is_420_only(info, adjusted_mode) ||
> !intel_dp_get_colorimetry_status(intel_dp) ||
> @@ -2316,13 +2315,6 @@ intel_dp_ycbcr420_config(struct intel_dp *intel_dp,
>
> crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR420;
>
> - /* YCBCR 420 output conversion needs a scaler */
> - ret = skl_update_scaler_crtc(crtc_state);
> - if (ret) {
> - DRM_DEBUG_KMS("Scaler allocation for output failed\n");
> - return ret;
> - }
> -
> intel_pch_panel_fitting(crtc, crtc_state, DRM_MODE_SCALE_FULLSCREEN);
>
> return 0;
> @@ -2400,7 +2392,6 @@ intel_dp_compute_config(struct intel_encoder *encoder,
> else
> ret = intel_dp_ycbcr420_config(intel_dp, &intel_connector->base,
> pipe_config);
> -
> if (ret)
> return ret;
>
> @@ -2416,12 +2407,6 @@ intel_dp_compute_config(struct intel_encoder *encoder,
> intel_fixed_panel_mode(intel_connector->panel.fixed_mode,
> adjusted_mode);
>
> - if (INTEL_GEN(dev_priv) >= 9) {
> - ret = skl_update_scaler_crtc(pipe_config);
> - if (ret)
> - return ret;
> - }
> -
> if (HAS_GMCH(dev_priv))
> intel_gmch_panel_fitting(intel_crtc, pipe_config,
> conn_state->scaling_mode);
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index e68bafb76cb1..1e42b01045b1 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2308,12 +2308,6 @@ intel_hdmi_ycbcr420_config(struct drm_connector *connector,
>
> config->output_format = INTEL_OUTPUT_FORMAT_YCBCR420;
>
> - /* YCBCR 420 output conversion needs a scaler */
> - if (skl_update_scaler_crtc(config)) {
> - DRM_DEBUG_KMS("Scaler allocation for output failed\n");
> - return false;
> - }
> -
> intel_pch_panel_fitting(intel_crtc, config,
> DRM_MODE_SCALE_FULLSCREEN);
>
> --
> 2.24.1
>
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