On 8/8/2024 10:24 AM, Nemesa Garg wrote:
In panel fitter/pipe scaler scenario the pch_pfit configuration
currently takes place before accounting for pipe_src width for
joiner. This causes issue when pch_pfit and joiner get enabled
together.
Introduce a new boolean flag need_joiner which is set during dp
compute_config in joiner case and later is used to compute
panel_fitting in pipe_config. Modify pch_panel_fitting to handle
joiner pipes by adjusting crtc_hdisplay accordingly.
v2: Address comments (Ankit)
In general, it would be good to document the changes patch went through.
v3: Change flag name (Ankit)
Signed-off-by: Nemesa Garg <nemesa.garg@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 11 +++++++++++
drivers/gpu/drm/i915/display/intel_display_types.h | 1 +
drivers/gpu/drm/i915/display/intel_dp.c | 11 ++++++++---
drivers/gpu/drm/i915/display/intel_panel.c | 3 +++
4 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 8bbde03f2508..82b67c0a90e0 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4796,6 +4796,17 @@ intel_modeset_pipe_config(struct intel_atomic_state *state,
return ret;
}
+ for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
+ if (connector_state->crtc != &crtc->base)
+ continue;
+
+ if (crtc_state->pch_pfit.need_joiner) {
+ ret = intel_panel_fitting(crtc_state, connector_state);
+ if (ret)
+ return ret;
+ }
+ }
+
/* Dithering seems to not pass-through bits correctly when it should, so
* only enable it on 6bpc panels and when its not a compliance
* test requesting 6bpc video pattern.
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index a04d52dbf6e1..eb9713b088c6 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1258,6 +1258,7 @@ struct intel_crtc_state {
struct drm_rect dst;
bool enabled;
bool force_thru;
+ bool need_joiner;
} pch_pfit;
/* FDI configuration, only valid if has_pch_encoder is set. */
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 65182bf69b62..d5d9d4f21fc7 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2953,9 +2953,14 @@ intel_dp_compute_config(struct intel_encoder *encoder,
if ((intel_dp_is_edp(intel_dp) && fixed_mode) ||
pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
- ret = intel_panel_fitting(pipe_config, conn_state);
- if (ret)
- return ret;
+ if (!pipe_config->joiner_pipes) {
+ ret = intel_panel_fitting(pipe_config, conn_state);
+ if (ret)
+ return ret;
+ } else {
+ /* Incase of joiner panel_fitting is handled during pipe_config */
'pipe_config' seems confusing, as we already have a variable pipe_config.
Also, perhaps we can explain a bit more about the rationale behind
handling this at later point.
Apart from the minor things above, the patch looks good to me.
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
+ pipe_config->pch_pfit.need_joiner = true;
+ }
}
pipe_config->limited_color_range =
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c
index dd18136d1c61..0da45c2330d3 100644
--- a/drivers/gpu/drm/i915/display/intel_panel.c
+++ b/drivers/gpu/drm/i915/display/intel_panel.c
@@ -395,6 +395,9 @@ static int pch_panel_fitting(struct intel_crtc_state *crtc_state,
u16 crtc_hdisplay = adjusted_mode->crtc_hdisplay;
u16 crtc_vdisplay = adjusted_mode->crtc_vdisplay;
+ if (crtc_state->joiner_pipes)
+ crtc_hdisplay = adjusted_mode->crtc_hdisplay / 2;
+
/* Native modes don't need fitting */
if (crtc_hdisplay == pipe_src_w &&
crtc_vdisplay == pipe_src_h &&
