drm: bridge: Pass drm_display_info to drm_bridge_funcs .mode_valid()

When validating a mode, bridges may need to do so in the context of a
display, as specified by drm_display_info. An example is the meson
dw-hdmi bridge that needs to consider the YUV 4:2:0 output format to
perform clock calculations.

Bridges that need the display info currently retrieve it from the
drm_connector created by the bridge. This gets in the way of moving
connector creation out of bridge drivers. To make this possible, pass
the drm_display_info to drm_bridge_funcs .mode_valid().

Changes to the bridge drivers have been performed with the following
coccinelle semantic patch and have been compile-tested.

@ rule1 @
identifier funcs;
identifier fn;
@@
 struct drm_bridge_funcs funcs = {
 	...,
 	.mode_valid = fn
 };

@ depends on rule1 @
identifier rule1.fn;
identifier bridge;
identifier mode;
@@
 enum drm_mode_status fn(
 	struct drm_bridge *bridge,
+	const struct drm_display_info *info,
 	const struct drm_display_mode *mode
 )
 {
 	...
 }

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Guido Günther <agx@sigxcpu.org> # for the nwl-dsi part:
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200526011505.31884-11-laurent.pinchart+renesas@ideasonboard.com

20 files changed, 25 insertions, 3 deletions

diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
index 2bc6e4f85171..371f4a9f866d 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
@@ -585,6 +585,7 @@ static int anx6345_bridge_attach(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 anx6345_bridge_mode_valid(struct drm_bridge *bridge,
+			  const struct drm_display_info *info,
 			  const struct drm_display_mode *mode)
 {
 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
index 0d5a5ad0c9ee..81debd02c169 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
@@ -944,6 +944,7 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 anx78xx_bridge_mode_valid(struct drm_bridge *bridge,
+			  const struct drm_display_info *info,
 			  const struct drm_display_mode *mode)
 {
 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c
index 69c3892caee5..76373e31df92 100644
--- a/drivers/gpu/drm/bridge/cdns-dsi.c
+++ b/drivers/gpu/drm/bridge/cdns-dsi.c
@@ -663,6 +663,7 @@ static int cdns_dsi_bridge_attach(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 cdns_dsi_bridge_mode_valid(struct drm_bridge *bridge,
+			   const struct drm_display_info *info,
 			   const struct drm_display_mode *mode)
 {
 	struct cdns_dsi_input *input = bridge_to_cdns_dsi_input(bridge);
diff --git a/drivers/gpu/drm/bridge/chrontel-ch7033.c b/drivers/gpu/drm/bridge/chrontel-ch7033.c
index f8675d82974b..486f405c2e16 100644
--- a/drivers/gpu/drm/bridge/chrontel-ch7033.c
+++ b/drivers/gpu/drm/bridge/chrontel-ch7033.c
@@ -317,6 +317,7 @@ static void ch7033_bridge_detach(struct drm_bridge *bridge)
 }
 
 static enum drm_mode_status ch7033_bridge_mode_valid(struct drm_bridge *bridge,
+				     const struct drm_display_info *info,
 				     const struct drm_display_mode *mode)
 {
 	if (mode->clock > 165000)
diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
index b14d725bf609..77a79af70914 100644
--- a/drivers/gpu/drm/bridge/nwl-dsi.c
+++ b/drivers/gpu/drm/bridge/nwl-dsi.c
@@ -818,6 +818,7 @@ static bool nwl_dsi_bridge_mode_fixup(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 nwl_dsi_bridge_mode_valid(struct drm_bridge *bridge,
+			  const struct drm_display_info *info,
 			  const struct drm_display_mode *mode)
 {
 	struct nwl_dsi *dsi = bridge_to_dsi(bridge);
diff --git a/drivers/gpu/drm/bridge/sii9234.c b/drivers/gpu/drm/bridge/sii9234.c
index b1258f0ed205..15c98a7bd81c 100644
--- a/drivers/gpu/drm/bridge/sii9234.c
+++ b/drivers/gpu/drm/bridge/sii9234.c
@@ -873,6 +873,7 @@ static inline struct sii9234 *bridge_to_sii9234(struct drm_bridge *bridge)
 }
 
 static enum drm_mode_status sii9234_mode_valid(struct drm_bridge *bridge,
+					 const struct drm_display_info *info,
 					 const struct drm_display_mode *mode)
 {
 	if (mode->clock > MHL1_MAX_CLK)
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c
index 92acd336aa89..7c0c93c7e61f 100644
--- a/drivers/gpu/drm/bridge/sil-sii8620.c
+++ b/drivers/gpu/drm/bridge/sil-sii8620.c
@@ -2244,6 +2244,7 @@ static int sii8620_is_packing_required(struct sii8620 *ctx,
 }
 
 static enum drm_mode_status sii8620_mode_valid(struct drm_bridge *bridge,
+					 const struct drm_display_info *info,
 					 const struct drm_display_mode *mode)
 {
 	struct sii8620 *ctx = bridge_to_sii8620(bridge);
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 30681398cfb0..b535354150db 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2767,6 +2767,7 @@ static void dw_hdmi_bridge_detach(struct drm_bridge *bridge)
 
 static enum drm_mode_status
 dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
+			  const struct drm_display_info *info,
 			  const struct drm_display_mode *mode)
 {
 	struct dw_hdmi *hdmi = bridge->driver_private;
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 5ef0f154aa7b..c223fb9a04cb 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -924,6 +924,7 @@ static void dw_mipi_dsi_bridge_enable(struct drm_bridge *bridge)
 
 static enum drm_mode_status
 dw_mipi_dsi_bridge_mode_valid(struct drm_bridge *bridge,
+			      const struct drm_display_info *info,
 			      const struct drm_display_mode *mode)
 {
 	struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index e4c0ea03ae3a..c2777b226c75 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1306,6 +1306,7 @@ static bool tc_bridge_mode_fixup(struct drm_bridge *bridge,
 }
 
 static enum drm_mode_status tc_mode_valid(struct drm_bridge *bridge,
+					  const struct drm_display_info *info,
 					  const struct drm_display_mode *mode)
 {
 	struct tc_data *tc = bridge_to_tc(bridge);
diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c
index 6650fe4cfc20..4a463fadf743 100644
--- a/drivers/gpu/drm/bridge/tc358768.c
+++ b/drivers/gpu/drm/bridge/tc358768.c
@@ -529,6 +529,7 @@ static int tc358768_bridge_attach(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 tc358768_bridge_mode_valid(struct drm_bridge *bridge,
+			   const struct drm_display_info *info,
 			   const struct drm_display_mode *mode)
 {
 	struct tc358768_priv *priv = bridge_to_tc358768(bridge);
diff --git a/drivers/gpu/drm/bridge/thc63lvd1024.c b/drivers/gpu/drm/bridge/thc63lvd1024.c
index 97d8129760e9..86b06975bfdd 100644
--- a/drivers/gpu/drm/bridge/thc63lvd1024.c
+++ b/drivers/gpu/drm/bridge/thc63lvd1024.c
@@ -51,6 +51,7 @@ static int thc63_attach(struct drm_bridge *bridge,
 }
 
 static enum drm_mode_status thc63_mode_valid(struct drm_bridge *bridge,
+					const struct drm_display_info *info,
 					const struct drm_display_mode *mode)
 {
 	struct thc63_dev *thc63 = to_thc63(bridge);
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index 6467e6f2f1fa..ba3fa2a9b8a4 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -192,6 +192,7 @@ static void tfp410_disable(struct drm_bridge *bridge)
 }
 
 static enum drm_mode_status tfp410_mode_valid(struct drm_bridge *bridge,
+					      const struct drm_display_info *info,
 					      const struct drm_display_mode *mode)
 {
 	if (mode->clock < 25000)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index a1898c58ae3c..f68c69a45752 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -506,7 +506,8 @@ static enum drm_mode_status mode_valid_path(struct drm_connector *connector,
 	}
 
 	bridge = drm_bridge_chain_get_first_bridge(encoder);
-	ret = drm_bridge_chain_mode_valid(bridge, mode);
+	ret = drm_bridge_chain_mode_valid(bridge, &connector->display_info,
+					  mode);
 	if (ret != MODE_OK) {
 		DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n");
 		return ret;
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index fe1e3460b486..64f0effb52ac 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -377,6 +377,7 @@ EXPORT_SYMBOL(drm_bridge_chain_mode_fixup);
  * drm_bridge_chain_mode_valid - validate the mode against all bridges in the
  *				 encoder chain.
  * @bridge: bridge control structure
+ * @info: display info against which the mode shall be validated
  * @mode: desired mode to be validated
  *
  * Calls &drm_bridge_funcs.mode_valid for all the bridges in the encoder
@@ -390,6 +391,7 @@ EXPORT_SYMBOL(drm_bridge_chain_mode_fixup);
  */
 enum drm_mode_status
 drm_bridge_chain_mode_valid(struct drm_bridge *bridge,
+			    const struct drm_display_info *info,
 			    const struct drm_display_mode *mode)
 {
 	struct drm_encoder *encoder;
@@ -404,7 +406,7 @@ drm_bridge_chain_mode_valid(struct drm_bridge *bridge,
 		if (!bridge->funcs->mode_valid)
 			continue;
 
-		ret = bridge->funcs->mode_valid(bridge, mode);
+		ret = bridge->funcs->mode_valid(bridge, info, mode);
 		if (ret != MODE_OK)
 			return ret;
 	}
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 26e997f1524f..09e872e61315 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -114,7 +114,9 @@ drm_mode_validate_pipeline(struct drm_display_mode *mode,
 		}
 
 		bridge = drm_bridge_chain_get_first_bridge(encoder);
-		ret = drm_bridge_chain_mode_valid(bridge, mode);
+		ret = drm_bridge_chain_mode_valid(bridge,
+						  &connector->display_info,
+						  mode);
 		if (ret != MODE_OK) {
 			/* There is also no point in continuing for crtc check
 			 * here. */
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 9517f522dcb9..50fd119a5276 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1379,6 +1379,7 @@ static void tda998x_bridge_detach(struct drm_bridge *bridge)
 }
 
 static enum drm_mode_status tda998x_bridge_mode_valid(struct drm_bridge *bridge,
+				     const struct drm_display_info *info,
 				     const struct drm_display_mode *mode)
 {
 	/* TDA19988 dotclock can go up to 165MHz */
diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
index 5110acb0c6c1..1d2992daef40 100644
--- a/drivers/gpu/drm/omapdrm/dss/dpi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
@@ -434,6 +434,7 @@ static int dpi_bridge_attach(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 dpi_bridge_mode_valid(struct drm_bridge *bridge,
+		       const struct drm_display_info *info,
 		       const struct drm_display_mode *mode)
 {
 	struct dpi_data *dpi = drm_bridge_to_dpi(bridge);
diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c
index 417a8740ad0a..033fd30074b0 100644
--- a/drivers/gpu/drm/omapdrm/dss/sdi.c
+++ b/drivers/gpu/drm/omapdrm/dss/sdi.c
@@ -140,6 +140,7 @@ static int sdi_bridge_attach(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 sdi_bridge_mode_valid(struct drm_bridge *bridge,
+		      const struct drm_display_info *info,
 		      const struct drm_display_mode *mode)
 {
 	struct sdi_device *sdi = drm_bridge_to_sdi(bridge);
diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c
index 9701843ccf09..4406ce2a08b4 100644
--- a/drivers/gpu/drm/omapdrm/dss/venc.c
+++ b/drivers/gpu/drm/omapdrm/dss/venc.c
@@ -548,6 +548,7 @@ static int venc_bridge_attach(struct drm_bridge *bridge,
 
 static enum drm_mode_status
 venc_bridge_mode_valid(struct drm_bridge *bridge,
+		       const struct drm_display_info *info,
 		       const struct drm_display_mode *mode)
 {
 	switch (venc_get_videomode(mode)) {