On Wed, Sep 25, 2024 at 12:00:30PM +0530, Nemesa Garg wrote:
> Replace adjusted_mode with pipe_mode in pch_panel_fitting
> so as to that final pipe src width and height is used after
> joiner calculation. De-couple the current intel_panel_fitting
> function, one pre-ilk and one post-ilk, as post-ilk
> pch_panel_fitting is called from pipe_config.
>
> v4: Replace adjusted_mode with pipe_mode[Ville]
> Keep gmch panel fitting in same place[Ville]
>
> Signed-off-by: Nemesa Garg <nemesa.garg@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_panel.c | 52 +++++++++++-----------
> drivers/gpu/drm/i915/display/intel_panel.h | 8 +++-
> 2 files changed, 32 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c
> index 71454ddef20f..bd25c96f2e57 100644
> --- a/drivers/gpu/drm/i915/display/intel_panel.c
> +++ b/drivers/gpu/drm/i915/display/intel_panel.c
> @@ -387,15 +387,15 @@ void intel_panel_add_encoder_fixed_mode(struct intel_connector *connector,
> static int pch_panel_fitting(struct intel_crtc_state *crtc_state,
> const struct drm_connector_state *conn_state)
> {
> - const struct drm_display_mode *adjusted_mode =
> - &crtc_state->hw.adjusted_mode;
> + const struct drm_display_mode *pipe_mode =
> + &crtc_state->hw.pipe_mode;
We don't have that where this currently gets caller.
We'll need to do this in careful steps:
1) reject joiner + pfit (assuming we are allowing this currently?)
needs to be first so we can backport it
2) call pch_panel_fitting() after pipe_src+pipe_mode have been
computed
3) switch to using pipe_mode in pch_panel_fitting()
4) allow joiner+pfit again, assuming everyhting looks kosher
5) ponteially follow up with some cleanups, eg. get rid of the
early pipe_src initialization in intel_modeset_pipe_config().
This needs to be done without breaking the gmch stuff mind you,
as that would presumably still need pipe_src early
> int pipe_src_w = drm_rect_width(&crtc_state->pipe_src);
> int pipe_src_h = drm_rect_height(&crtc_state->pipe_src);
> int x, y, width, height;
>
> /* Native modes don't need fitting */
> - if (adjusted_mode->crtc_hdisplay == pipe_src_w &&
> - adjusted_mode->crtc_vdisplay == pipe_src_h &&
> + if (pipe_mode->crtc_hdisplay == pipe_src_w &&
> + pipe_mode->crtc_vdisplay == pipe_src_h &&
> crtc_state->output_format != INTEL_OUTPUT_FORMAT_YCBCR420)
> return 0;
>
> @@ -403,45 +403,45 @@ static int pch_panel_fitting(struct intel_crtc_state *crtc_state,
> case DRM_MODE_SCALE_CENTER:
> width = pipe_src_w;
> height = pipe_src_h;
> - x = (adjusted_mode->crtc_hdisplay - width + 1)/2;
> - y = (adjusted_mode->crtc_vdisplay - height + 1)/2;
> + x = (pipe_mode->crtc_hdisplay - width + 1) / 2;
> + y = (pipe_mode->crtc_vdisplay - height + 1) / 2;
> break;
>
> case DRM_MODE_SCALE_ASPECT:
> /* Scale but preserve the aspect ratio */
> {
> - u32 scaled_width = adjusted_mode->crtc_hdisplay * pipe_src_h;
> - u32 scaled_height = pipe_src_w * adjusted_mode->crtc_vdisplay;
> + u32 scaled_width = pipe_mode->crtc_hdisplay * pipe_src_h;
> + u32 scaled_height = pipe_src_w * pipe_mode->crtc_vdisplay;
> if (scaled_width > scaled_height) { /* pillar */
> width = scaled_height / pipe_src_h;
> if (width & 1)
> width++;
> - x = (adjusted_mode->crtc_hdisplay - width + 1) / 2;
> + x = (pipe_mode->crtc_hdisplay - width + 1) / 2;
> y = 0;
> - height = adjusted_mode->crtc_vdisplay;
> + height = pipe_mode->crtc_vdisplay;
> } else if (scaled_width < scaled_height) { /* letter */
> height = scaled_width / pipe_src_w;
> if (height & 1)
> height++;
> - y = (adjusted_mode->crtc_vdisplay - height + 1) / 2;
> + y = (pipe_mode->crtc_vdisplay - height + 1) / 2;
> x = 0;
> - width = adjusted_mode->crtc_hdisplay;
> + width = pipe_mode->crtc_hdisplay;
> } else {
> x = y = 0;
> - width = adjusted_mode->crtc_hdisplay;
> - height = adjusted_mode->crtc_vdisplay;
> + width = pipe_mode->crtc_hdisplay;
> + height = pipe_mode->crtc_vdisplay;
> }
> }
> break;
>
> case DRM_MODE_SCALE_NONE:
> - WARN_ON(adjusted_mode->crtc_hdisplay != pipe_src_w);
> - WARN_ON(adjusted_mode->crtc_vdisplay != pipe_src_h);
> + WARN_ON(pipe_mode->crtc_hdisplay != pipe_src_w);
> + WARN_ON(pipe_mode->crtc_vdisplay != pipe_src_h);
> fallthrough;
> case DRM_MODE_SCALE_FULLSCREEN:
> x = y = 0;
> - width = adjusted_mode->crtc_hdisplay;
> - height = adjusted_mode->crtc_vdisplay;
> + width = pipe_mode->crtc_hdisplay;
> + height = pipe_mode->crtc_vdisplay;
> break;
>
> default:
> @@ -666,16 +666,16 @@ static int gmch_panel_fitting(struct intel_crtc_state *crtc_state,
> return 0;
> }
>
> -int intel_panel_fitting(struct intel_crtc_state *crtc_state,
> - const struct drm_connector_state *conn_state)
> +int intel_gch_panel_fitting(struct intel_crtc_state *crtc_state,
> + const struct drm_connector_state *conn_state)
> {
> - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - struct drm_i915_private *i915 = to_i915(crtc->base.dev);
> + return gmch_panel_fitting(crtc_state, conn_state);
> +}
>
> - if (HAS_GMCH(i915))
> - return gmch_panel_fitting(crtc_state, conn_state);
> - else
> - return pch_panel_fitting(crtc_state, conn_state);
> +int intel_pch_panel_fitting(struct intel_crtc_state *crtc_state,
> + const struct drm_connector_state *conn_state)
> +{
> + return pch_panel_fitting(crtc_state, conn_state);
> }
>
> enum drm_connector_status
> diff --git a/drivers/gpu/drm/i915/display/intel_panel.h b/drivers/gpu/drm/i915/display/intel_panel.h
> index 15a8c897b33f..0f678cd72403 100644
> --- a/drivers/gpu/drm/i915/display/intel_panel.h
> +++ b/drivers/gpu/drm/i915/display/intel_panel.h
> @@ -42,8 +42,12 @@ enum drrs_type intel_panel_drrs_type(struct intel_connector *connector);
> enum drm_mode_status
> intel_panel_mode_valid(struct intel_connector *connector,
> const struct drm_display_mode *mode);
> -int intel_panel_fitting(struct intel_crtc_state *crtc_state,
> - const struct drm_connector_state *conn_state);
> +int intel_gch_panel_fitting(struct intel_crtc_state *crtc_state,
> + const struct drm_connector_state *conn_state);
> +
> +int intel_pch_panel_fitting(struct intel_crtc_state *crtc_state,
> + const struct drm_connector_state *conn_state);
> +
> int intel_panel_compute_config(struct intel_connector *connector,
> struct drm_display_mode *adjusted_mode);
> void intel_panel_add_edid_fixed_modes(struct intel_connector *connector,
> --
> 2.25.1
--
Ville Syrjälä
Intel
