[PATCH] drm/vc4: hdmi: Remove drm_encoder->crtc usage

[Maxime Ripard]

The drm_encoder crtc pointer isn't really fit for an atomic driver,
let's rely on the connector state instead.

Signed-off-by: Maxime Ripard <maxime at cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 39 ++++++++++++++++++++++------------
 1 file changed, 26 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index aab1b36ceb3c..dbd762f41cad 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -435,7 +435,7 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
 	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
 	struct drm_connector *connector = &vc4_hdmi->connector;
 	struct drm_connector_state *cstate = connector->state;
-	struct drm_crtc *crtc = encoder->crtc;
+	struct drm_crtc *crtc = cstate->crtc;
 	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
 	union hdmi_infoframe frame;
 	int ret;
@@ -545,8 +545,11 @@ static bool vc4_hdmi_supports_scrambling(struct drm_encoder *encoder,
 
 static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
 {
-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+	struct drm_connector *connector = &vc4_hdmi->connector;
+	struct drm_connector_state *cstate = connector->state;
+	struct drm_crtc *crtc = cstate->crtc;
+	struct drm_display_mode *mode = &crtc->state->adjusted_mode;
 
 	if (!vc4_hdmi_supports_scrambling(encoder, mode))
 		return;
@@ -567,17 +570,18 @@ static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
 static void vc4_hdmi_disable_scrambling(struct drm_encoder *encoder)
 {
 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
-	struct drm_crtc *crtc = encoder->crtc;
+	struct drm_connector *connector = &vc4_hdmi->connector;
+	struct drm_connector_state *cstate = connector->state;
 
 	/*
-	 * At boot, encoder->crtc will be NULL. Since we don't know the
+	 * At boot, connector->state will be NULL. Since we don't know the
 	 * state of the scrambler and in order to avoid any
 	 * inconsistency, let's disable it all the time.
 	 */
-	if (crtc && !vc4_hdmi_supports_scrambling(encoder, &crtc->mode))
+	if (cstate && !vc4_hdmi_supports_scrambling(encoder, &cstate->crtc->mode))
 		return;
 
-	if (crtc && !vc4_hdmi_mode_needs_scrambling(&crtc->mode))
+	if (cstate && !vc4_hdmi_mode_needs_scrambling(&cstate->crtc->mode))
 		return;
 
 	if (delayed_work_pending(&vc4_hdmi->scrambling_work))
@@ -898,7 +902,9 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
 		vc4_hdmi_encoder_get_connector_state(encoder, state);
 	struct vc4_hdmi_connector_state *vc4_conn_state =
 		conn_state_to_vc4_hdmi_conn_state(conn_state);
-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+	struct drm_crtc_state *crtc_state =
+		drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+	struct drm_display_mode *mode = &crtc_state->adjusted_mode;
 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
 	unsigned long bvb_rate, pixel_rate, hsm_rate;
 	int ret;
@@ -983,7 +989,11 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
 static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder,
 					     struct drm_atomic_state *state)
 {
-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+	struct drm_connector_state *conn_state =
+		vc4_hdmi_encoder_get_connector_state(encoder, state);
+	struct drm_crtc_state *crtc_state =
+		drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+	struct drm_display_mode *mode = &crtc_state->adjusted_mode;
 	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
 
@@ -1006,7 +1016,11 @@ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder,
 static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
 					      struct drm_atomic_state *state)
 {
-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+	struct drm_connector_state *conn_state =
+		vc4_hdmi_encoder_get_connector_state(encoder, state);
+	struct drm_crtc_state *crtc_state =
+		drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+	struct drm_display_mode *mode = &crtc_state->adjusted_mode;
 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
 	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
 	bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC;
@@ -1192,8 +1206,8 @@ static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi)
 
 static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi)
 {
-	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
-	struct drm_crtc *crtc = encoder->crtc;
+	struct drm_connector *connector = &vc4_hdmi->connector;
+	struct drm_crtc *crtc = connector->state->crtc;
 	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
 	u32 samplerate = vc4_hdmi->audio.samplerate;
 	u32 n, cts;
@@ -1228,7 +1242,6 @@ static int vc4_hdmi_audio_startup(struct snd_pcm_substream *substream,
 				  struct snd_soc_dai *dai)
 {
 	struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai);
-	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
 	struct drm_connector *connector = &vc4_hdmi->connector;
 	int ret;
 
@@ -1241,7 +1254,7 @@ static int vc4_hdmi_audio_startup(struct snd_pcm_substream *substream,
 	 * If the HDMI encoder hasn't probed, or the encoder is
 	 * currently in DVI mode, treat the codec dai as missing.
 	 */
-	if (!encoder->crtc || !(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &
+	if (!connector->state || !(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &
 				VC4_HDMI_RAM_PACKET_ENABLE))
 		return -ENODEV;
 
-- 
2.31.1