[PATCH] drm: bridge: cdns-mhdp8546: Add mode_valid hook for the drm_bridge_funcs

[Jayesh Choudhary]

With the support for the 'DRM_BRIDGE_ATTACH_NO_CONNECTOR' case,
the connector_helper funcs are not initialized if the encoder has this
flag in its bridge_attach call. Till now we had mode_valid hook only in
the drm_connector_helper_funcs. Add this hook in drm_bridge_funcs to
validate the modes in this case as well.

Signed-off-by: Jayesh Choudhary <j-choudh...@ti.com>
---
 .../drm/bridge/cadence/cdns-mhdp8546-core.c   | 31 +++++++++++++++----
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c 
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index 8a91ef0ae065..0aee038f5db7 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -1617,12 +1617,10 @@ bool cdns_mhdp_bandwidth_ok(struct cdns_mhdp_device 
*mhdp,
        return true;
 }
 
-static
-enum drm_mode_status cdns_mhdp_mode_valid(struct drm_connector *conn,
-                                         struct drm_display_mode *mode)
+static enum
+drm_mode_status cdns_mhdp_mode_valid(struct cdns_mhdp_device *mhdp,
+                                    const struct drm_display_mode *mode)
 {
-       struct cdns_mhdp_device *mhdp = connector_to_mhdp(conn);
-
        mutex_lock(&mhdp->link_mutex);
 
        if (!cdns_mhdp_bandwidth_ok(mhdp, mode, mhdp->link.num_lanes,
@@ -1635,6 +1633,16 @@ enum drm_mode_status cdns_mhdp_mode_valid(struct 
drm_connector *conn,
        return MODE_OK;
 }
 
+static enum drm_mode_status
+cdns_mhdp_connector_mode_valid(struct drm_connector *conn,
+                              struct drm_display_mode *mode)
+{
+       struct cdns_mhdp_device *mhdp = connector_to_mhdp(conn);
+       const struct drm_display_mode *mod = mode;
+
+       return cdns_mhdp_mode_valid(mhdp, mod);
+}
+
 static int cdns_mhdp_connector_atomic_check(struct drm_connector *conn,
                                            struct drm_atomic_state *state)
 {
@@ -1678,7 +1686,7 @@ static int cdns_mhdp_connector_atomic_check(struct 
drm_connector *conn,
 static const struct drm_connector_helper_funcs cdns_mhdp_conn_helper_funcs = {
        .detect_ctx = cdns_mhdp_connector_detect,
        .get_modes = cdns_mhdp_get_modes,
-       .mode_valid = cdns_mhdp_mode_valid,
+       .mode_valid = cdns_mhdp_connector_mode_valid,
        .atomic_check = cdns_mhdp_connector_atomic_check,
 };
 
@@ -2233,6 +2241,16 @@ static const struct drm_edid 
*cdns_mhdp_bridge_edid_read(struct drm_bridge *brid
        return cdns_mhdp_edid_read(mhdp, connector);
 }
 
+static enum drm_mode_status
+cdns_mhdp_bridge_mode_valid(struct drm_bridge *bridge,
+                           const struct drm_display_info *info,
+                           const struct drm_display_mode *mode)
+{
+       struct cdns_mhdp_device *mhdp = bridge_to_mhdp(bridge);
+
+       return cdns_mhdp_mode_valid(mhdp, mode);
+}
+
 static const struct drm_bridge_funcs cdns_mhdp_bridge_funcs = {
        .atomic_enable = cdns_mhdp_atomic_enable,
        .atomic_disable = cdns_mhdp_atomic_disable,
@@ -2247,6 +2265,7 @@ static const struct drm_bridge_funcs 
cdns_mhdp_bridge_funcs = {
        .edid_read = cdns_mhdp_bridge_edid_read,
        .hpd_enable = cdns_mhdp_bridge_hpd_enable,
        .hpd_disable = cdns_mhdp_bridge_hpd_disable,
+       .mode_valid = cdns_mhdp_bridge_mode_valid,
 };
 
 static bool cdns_mhdp_detect_hpd(struct cdns_mhdp_device *mhdp, bool 
*hpd_pulse)
-- 
2.25.1