Re: [PATCH] drm/vc4: hdmi: Simplify the connector state retrieval

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Am 27.01.22 um 12:14 schrieb Maxime Ripard:
When we have the entire DRM state, retrieving the connector state only
requires the drm_connector pointer. Fortunately for us, we have
allocated it as a part of the vc4_hdmi structure, so we can retrieve get
a pointer by simply accessing our field in that structure.

Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>

Acked-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

---
  drivers/gpu/drm/vc4/vc4_hdmi.c | 21 +++------------------
  1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 2c83252819e9..efffe21d2e73 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1002,30 +1002,15 @@ static void vc4_hdmi_recenter_fifo(struct vc4_hdmi *vc4_hdmi)
  		  "VC4_HDMI_FIFO_CTL_RECENTER_DONE");
  }
-static struct drm_connector_state *
-vc4_hdmi_encoder_get_connector_state(struct drm_encoder *encoder,
-				     struct drm_atomic_state *state)
-{
-	struct drm_connector_state *conn_state;
-	struct drm_connector *connector;
-	unsigned int i;
-
-	for_each_new_connector_in_state(state, connector, conn_state, i) {
-		if (conn_state->best_encoder == encoder)
-			return conn_state;
-	}
-
-	return NULL;
-}
-
  static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
  						struct drm_atomic_state *state)
  {
+	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+	struct drm_connector *connector = &vc4_hdmi->connector;
  	struct drm_connector_state *conn_state =
-		vc4_hdmi_encoder_get_connector_state(encoder, state);
+		drm_atomic_get_new_connector_state(state, connector);
  	struct vc4_hdmi_connector_state *vc4_conn_state =
  		conn_state_to_vc4_hdmi_conn_state(conn_state);
-	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
  	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
  	unsigned long pixel_rate = vc4_conn_state->pixel_rate;
  	unsigned long bvb_rate, hsm_rate;

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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