[PATCH v9 42/61] drm/bridge: ite-it6263: Drop redundant .mode_valid hook

[Cristian Ciocaltea]

Bridges using DRM_BRIDGE_OP_HDMI expect connectors to be created through
drm_bridge_connector_init(), thereby relying on the bridge connector's
.mode_valid hook to invoke drm_hdmi_connector_mode_valid().

The generic helper computes the mode's TMDS character rate and forwards
it to the bridge's .hdmi_tmds_char_rate_valid callback through the
connector HDMI funcs.  This covers exactly what
it6263_bridge_mode_valid() does for 8 bpc RGB444, but due to being
output-format aware, it also handles the validation more thoroughly.

Both the connector and bridge .mode_valid hooks are invoked during
mode validation through drm_mode_validate_pipeline(), so the custom
bridge hook is redundant.  Drop it.

While at it, remove the now-unused drm_hdmi_helper.h include.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
---
 drivers/gpu/drm/bridge/ite-it6263.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ite-it6263.c b/drivers/gpu/drm/bridge/ite-it6263.c
index 4c0b670806cc..f166bb38998c 100644
--- a/drivers/gpu/drm/bridge/ite-it6263.c
+++ b/drivers/gpu/drm/bridge/ite-it6263.c
@@ -15,7 +15,6 @@
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 
-#include <drm/display/drm_hdmi_helper.h>
 #include <drm/display/drm_hdmi_state_helper.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
@@ -669,20 +668,6 @@ static void it6263_bridge_atomic_enable(struct drm_bridge *bridge,
 	regmap_write(regmap, HDMI_REG_PKT_GENERAL_CTRL, ENABLE_PKT | REPEAT_PKT);
 }
 
-static enum drm_mode_status
-it6263_bridge_mode_valid(struct drm_bridge *bridge,
-			 const struct drm_display_info *info,
-			 const struct drm_display_mode *mode)
-{
-	unsigned long long rate;
-
-	rate = drm_hdmi_compute_mode_clock(mode, 8, DRM_OUTPUT_COLOR_FORMAT_RGB444);
-	if (rate == 0)
-		return MODE_NOCLOCK;
-
-	return bridge->funcs->hdmi_tmds_char_rate_valid(bridge, mode, rate);
-}
-
 static int it6263_bridge_attach(struct drm_bridge *bridge,
 				struct drm_encoder *encoder,
 				enum drm_bridge_attach_flags flags)
@@ -831,7 +816,6 @@ static const struct drm_bridge_funcs it6263_bridge_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
 	.atomic_create_state = drm_atomic_helper_bridge_create_state,
 	.attach = it6263_bridge_attach,
-	.mode_valid = it6263_bridge_mode_valid,
 	.atomic_disable = it6263_bridge_atomic_disable,
 	.atomic_enable = it6263_bridge_atomic_enable,
 	.detect = it6263_bridge_detect,

-- 
2.55.0