[PATCH 4/6] drm/vc4: use drm_encoder pointer for drm_writeback_connector

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Make changes to vc4 driver to start using drm_encoder pointer
for drm_writeback_connector.

Co-developed-by: Kandpal Suraj <suraj.kandpal@xxxxxxxxx>
Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
---
 drivers/gpu/drm/vc4/vc4_txp.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c
index 9809ca3..7b76968 100644
--- a/drivers/gpu/drm/vc4/vc4_txp.c
+++ b/drivers/gpu/drm/vc4/vc4_txp.c
@@ -151,6 +151,8 @@ struct vc4_txp {
 
 	struct platform_device *pdev;
 
+	struct drm_encoder drm_enc;
+
 	struct drm_writeback_connector connector;
 
 	void __iomem *regs;
@@ -159,7 +161,7 @@ struct vc4_txp {
 
 static inline struct vc4_txp *encoder_to_vc4_txp(struct drm_encoder *encoder)
 {
-	return container_of(encoder, struct vc4_txp, connector.encoder);
+	return container_of(encoder, struct vc4_txp, drm_enc);
 }
 
 static inline struct vc4_txp *connector_to_vc4_txp(struct drm_connector *conn)
@@ -467,6 +469,7 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
 	struct vc4_txp *txp;
 	struct drm_crtc *crtc;
 	struct drm_encoder *encoder;
+	struct drm_writeback_connector *wb_conn;
 	int ret, irq;
 
 	irq = platform_get_irq(pdev, 0);
@@ -492,9 +495,12 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
 	txp->regset.regs = txp_regs;
 	txp->regset.nregs = ARRAY_SIZE(txp_regs);
 
-	drm_connector_helper_add(&txp->connector.base,
+	wb_conn = &txp->connector;
+	wb_conn->encoder = &txp->drm_enc;
+
+	drm_connector_helper_add(&wb_conn->base,
 				 &vc4_txp_connector_helper_funcs);
-	ret = drm_writeback_connector_init(drm, &txp->connector,
+	ret = drm_writeback_connector_init(drm, wb_conn,
 					   &vc4_txp_connector_funcs,
 					   &vc4_txp_encoder_helper_funcs,
 					   drm_fmts, ARRAY_SIZE(drm_fmts));
@@ -506,7 +512,7 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
 	if (ret)
 		return ret;
 
-	encoder = &txp->connector.encoder;
+	encoder = txp->connector.encoder;
 	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
 	ret = devm_request_irq(dev, irq, vc4_txp_interrupt, 0,
-- 
2.7.4




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