drm/bridge: mhdp8546: Set input_bus_flags from atomic_check

input_bus_flags are specified in drm_bridge_timings (legacy) as well
as drm_bridge_state->input_bus_cfg.flags

The flags from the timings will be deprecated. Bridges are supposed
to validate and set the bridge state flags from atomic_check.

Signed-off-by: Nikhil Devshatwar <[e-mail]>
[a-bhatia1: replace timings in cdns_mhdp_platform_info by input_bus_flags]
Signed-off-by: Aradhya Bhatia <[e-mail]>
Reviewed-by: Neil Armstrong <[e-mail]>
Reviewed-by: Tomi Valkeinen <[e-mail]>
Signed-off-by: Javier Martinez Canillas <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c

···
 		return -EINVAL;
 	}
 
+	/*
+	 * There might be flags negotiation supported in future.
+	 * Set the bus flags in atomic_check statically for now.
+	 */
+	if (mhdp->info)
+		bridge_state->input_bus_cfg.flags = *mhdp->info->input_bus_flags;
+
 	mutex_unlock(&mhdp->link_mutex);
 	return 0;
 }
···
 	mhdp->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
 			   DRM_BRIDGE_OP_HPD;
 	mhdp->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
-	if (mhdp->info)
-		mhdp->bridge.timings = mhdp->info->timings;
 
 	ret = phy_init(mhdp->phy);
 	if (ret) {
···
 #ifdef CONFIG_DRM_CDNS_MHDP8546_J721E
 	{ .compatible = "ti,j721e-mhdp8546",
 	  .data = &(const struct cdns_mhdp_platform_info) {
-		  .timings = &mhdp_ti_j721e_bridge_timings,
+		  .input_bus_flags = &mhdp_ti_j721e_bridge_input_bus_flags,
 		  .ops = &mhdp_ti_j721e_ops,
 	  },
 	},

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h

···
 };
 
 struct cdns_mhdp_platform_info {
-	const struct drm_bridge_timings *timings;
+	const u32 *input_bus_flags;
 	const struct mhdp_platform_ops *ops;
 };
 

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.c

···
 	.disable = cdns_mhdp_j721e_disable,
 };
 
-const struct drm_bridge_timings mhdp_ti_j721e_bridge_timings = {
-	.input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
-			   DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE |
-			   DRM_BUS_FLAG_DE_HIGH,
-};
+const u32
+mhdp_ti_j721e_bridge_input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
+				       DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE |
+				       DRM_BUS_FLAG_DE_HIGH;

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.h

···
 struct mhdp_platform_ops;
 
 extern const struct mhdp_platform_ops mhdp_ti_j721e_ops;
-extern const struct drm_bridge_timings mhdp_ti_j721e_bridge_timings;
+extern const u32 mhdp_ti_j721e_bridge_input_bus_flags;
 
 #endif /* !CDNS_MHDP8546_J721E_H */