On Mon, Dec 02, 2019 at 09:10:08PM +0530, Ramalingam C wrote:
> On 2019-11-29 at 20:54:34 +0200, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrj...@linux.intel.com>
> >
> > Migrate away from the legacy encoder->crtc and connector->encoder links
> > in the debugfs display_info code. Other users still remain so can't kill
> > these off yet.
> May be I missed why we want to kill encoder->crtc and conn->encoder.
> If you dont mind please explain the reasoning.
They are pre-atomic legacy state. With atomic everything should be
tracked in crtc_state/etc. instead. These things are being updated
in the middle of commit_tail() so any use during atomic_check() must
already be considered a bug. So I want to eliminate them completely
mainly to stop people from using them in new code out of ignorance.
Fortunately it doesn't look like this will be as difficult as I
originally feared.
>
> Apart from that the implementation looks good to me.
>
> Reviewed-by: Ramalingam C <ramalinga...@intel.com>
> >
> > Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> > ---
> > drivers/gpu/drm/i915/display/intel_display.h | 7 ++++
> > drivers/gpu/drm/i915/i915_debugfs.c | 43 ++++++++++++--------
> > 2 files changed, 34 insertions(+), 16 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_display.h
> > b/drivers/gpu/drm/i915/display/intel_display.h
> > index a5ec5eeff056..5ed716a986ad 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.h
> > +++ b/drivers/gpu/drm/i915/display/intel_display.h
> > @@ -380,6 +380,13 @@ enum phy_fia {
> > &(dev)->mode_config.encoder_list, \
> > base.head)
> >
> > +#define for_each_intel_encoder_mask(dev, intel_encoder, encoder_mask)
> > \
> > + list_for_each_entry(intel_encoder, \
> > + &(dev)->mode_config.encoder_list, \
> > + base.head) \
> > + for_each_if((encoder_mask) & \
> > + drm_encoder_mask(&intel_encoder->base))
> > +
> > #define for_each_intel_dp(dev, intel_encoder) \
> > for_each_intel_encoder(dev, intel_encoder) \
> > for_each_if(intel_encoder_is_dp(intel_encoder))
> > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> > b/drivers/gpu/drm/i915/i915_debugfs.c
> > index 414da0a542d6..eb80a2c4b55b 100644
> > --- a/drivers/gpu/drm/i915/i915_debugfs.c
> > +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> > @@ -2382,15 +2382,24 @@ static void intel_encoder_info(struct seq_file *m,
> > struct intel_encoder *encoder)
> > {
> > struct drm_i915_private *dev_priv = node_to_i915(m->private);
> > - struct drm_device *dev = &dev_priv->drm;
> > - struct intel_connector *connector;
> > + struct drm_connector_list_iter conn_iter;
> > + struct drm_connector *connector;
> >
> > seq_printf(m, "\t[ENCODER:%d:%s]: connectors:\n",
> > encoder->base.base.id, encoder->base.name);
> >
> > - for_each_connector_on_encoder(dev, &encoder->base, connector)
> > + drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
> > + drm_for_each_connector_iter(connector, &conn_iter) {
> > + const struct drm_connector_state *conn_state =
> > + connector->state;
> > +
> > + if (conn_state->best_encoder != &encoder->base)
> > + continue;
> > +
> > seq_printf(m, "\t\t[CONNECTOR:%d:%s]\n",
> > - connector->base.base.id, connector->base.name);
> > + connector->base.id, connector->name);
> > + }
> > + drm_connector_list_iter_end(&conn_iter);
> > }
> >
> > static void intel_panel_info(struct seq_file *m, struct intel_panel *panel)
> > @@ -2475,8 +2484,10 @@ static void intel_connector_info(struct seq_file *m,
> > struct drm_connector *connector)
> > {
> > struct intel_connector *intel_connector = to_intel_connector(connector);
> > - struct intel_encoder *intel_encoder = intel_connector->encoder;
> > - struct drm_display_mode *mode;
> > + const struct drm_connector_state *conn_state = connector->state;
> > + struct intel_encoder *encoder =
> > + to_intel_encoder(conn_state->best_encoder);
> > + const struct drm_display_mode *mode;
> >
> > seq_printf(m, "[CONNECTOR:%d:%s]: status: %s\n",
> > connector->base.id, connector->name,
> > @@ -2492,24 +2503,24 @@ static void intel_connector_info(struct seq_file *m,
> >
> > drm_get_subpixel_order_name(connector->display_info.subpixel_order));
> > seq_printf(m, "\tCEA rev: %d\n", connector->display_info.cea_rev);
> >
> > - if (!intel_encoder)
> > + if (!encoder)
> > return;
> >
> > switch (connector->connector_type) {
> > case DRM_MODE_CONNECTOR_DisplayPort:
> > case DRM_MODE_CONNECTOR_eDP:
> > - if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
> > + if (encoder->type == INTEL_OUTPUT_DP_MST)
> > intel_dp_mst_info(m, intel_connector);
> > else
> > intel_dp_info(m, intel_connector);
> > break;
> > case DRM_MODE_CONNECTOR_LVDS:
> > - if (intel_encoder->type == INTEL_OUTPUT_LVDS)
> > + if (encoder->type == INTEL_OUTPUT_LVDS)
> > intel_lvds_info(m, intel_connector);
> > break;
> > case DRM_MODE_CONNECTOR_HDMIA:
> > - if (intel_encoder->type == INTEL_OUTPUT_HDMI ||
> > - intel_encoder->type == INTEL_OUTPUT_DDI)
> > + if (encoder->type == INTEL_OUTPUT_HDMI ||
> > + encoder->type == INTEL_OUTPUT_DDI)
> > intel_hdmi_info(m, intel_connector);
> > break;
> > default:
> > @@ -2653,6 +2664,7 @@ static void intel_crtc_info(struct seq_file *m,
> > struct intel_crtc *crtc)
> > struct drm_i915_private *dev_priv = node_to_i915(m->private);
> > const struct intel_crtc_state *crtc_state =
> > to_intel_crtc_state(crtc->base.state);
> > + struct intel_encoder *encoder;
> >
> > seq_printf(m, "[CRTC:%d:%s]:\n",
> > crtc->base.base.id, crtc->base.name);
> > @@ -2663,8 +2675,6 @@ static void intel_crtc_info(struct seq_file *m,
> > struct intel_crtc *crtc)
> > DRM_MODE_ARG(&crtc_state->uapi.mode));
> >
> > if (crtc_state->hw.enable) {
> > - struct intel_encoder *encoder;
> > -
> > seq_printf(m, "\thw: active=%s, adjusted_mode=" DRM_MODE_FMT
> > "\n",
> > yesno(crtc_state->hw.active),
> > DRM_MODE_ARG(&crtc_state->hw.adjusted_mode));
> > @@ -2673,12 +2683,13 @@ static void intel_crtc_info(struct seq_file *m,
> > struct intel_crtc *crtc)
> > crtc_state->pipe_src_w, crtc_state->pipe_src_h,
> > yesno(crtc_state->dither), crtc_state->pipe_bpp);
> >
> > - for_each_encoder_on_crtc(&dev_priv->drm, &crtc->base, encoder)
> > - intel_encoder_info(m, crtc, encoder);
> > -
> > intel_scaler_info(m, crtc);
> > }
> >
> > + for_each_intel_encoder_mask(&dev_priv->drm, encoder,
> > + crtc_state->uapi.encoder_mask)
> > + intel_encoder_info(m, crtc, encoder);
> > +
> > intel_plane_info(m, crtc);
> >
> > seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s\n",
> > --
> > 2.23.0
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel
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