[RFC 8/8] DRM: dove: provide a couple of generic slave encoder helpers

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Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/dove/dove_output.c   |   20 ++++++++++++++++++++
 drivers/gpu/drm/dove/dove_output.h   |    6 ++++++
 drivers/gpu/drm/dove/dove_tda19988.c |   23 ++---------------------
 3 files changed, 28 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/dove/dove_output.c b/drivers/gpu/drm/dove/dove_output.c
index 7cd7d35..470ce80 100644
--- a/drivers/gpu/drm/dove/dove_output.c
+++ b/drivers/gpu/drm/dove/dove_output.c
@@ -9,6 +9,7 @@
 #include "drm_crtc_helper.h"
 #include "drm_edid.h"
 #include "drm_helper.h"
+#include "drm_encoder_slave.h"
 #include "dove_output.h"
 #include "dove_drm.h"
 
@@ -76,6 +77,25 @@ void dove_drm_encoder_commit(struct drm_encoder *encoder)
 	funcs->dpms(encoder, DRM_MODE_DPMS_ON);
 }
 
+/* Shouldn't this be a generic helper function? */
+int dove_drm_slave_encoder_mode_valid(struct drm_connector *conn,
+	struct drm_display_mode *mode)
+{
+	struct drm_encoder *encoder = conn->encoder;
+	struct drm_encoder_slave *slave = to_encoder_slave(encoder);
+
+	return slave->slave_funcs->mode_valid(encoder, mode);
+}
+
+int dove_drm_slave_encoder_set_property(struct drm_connector *conn,
+	struct drm_property *property, uint64_t value)
+{
+	struct drm_encoder *encoder = conn->encoder;
+	struct drm_encoder_slave *slave = to_encoder_slave(encoder);
+
+	return slave->slave_funcs->set_property(encoder, conn, property, value);
+}
+
 struct drm_connector *dove_output_create(struct drm_device *dev,
 	const struct dove_output_type *type)
 {
diff --git a/drivers/gpu/drm/dove/dove_output.h b/drivers/gpu/drm/dove/dove_output.h
index 1b12890..d504ef0 100644
--- a/drivers/gpu/drm/dove/dove_output.h
+++ b/drivers/gpu/drm/dove/dove_output.h
@@ -20,6 +20,12 @@ struct drm_encoder *dove_drm_connector_best_encoder(struct drm_connector *conn);
 void dove_drm_encoder_prepare(struct drm_encoder *encoder);
 void dove_drm_encoder_commit(struct drm_encoder *encoder);
 
+int dove_drm_slave_encoder_mode_valid(struct drm_connector *conn,
+	struct drm_display_mode *mode);
+
+int dove_drm_slave_encoder_set_property(struct drm_connector *conn,
+	struct drm_property *property, uint64_t value);
+
 struct drm_connector *dove_output_create(struct drm_device *dev,
 	const struct dove_output_type *);
 
diff --git a/drivers/gpu/drm/dove/dove_tda19988.c b/drivers/gpu/drm/dove/dove_tda19988.c
index 26ef2a2..0b179d7 100644
--- a/drivers/gpu/drm/dove/dove_tda19988.c
+++ b/drivers/gpu/drm/dove/dove_tda19988.c
@@ -20,15 +20,6 @@ struct dove_drm_tda19988_encoder {
 };
 #define to_tda19988_encoder(enc) container_of(to_encoder_slave(enc), struct dove_drm_tda19988_encoder, slave)
 
-static int dove_drm_connector_tda19988_mode_valid(struct drm_connector *conn,
-	struct drm_display_mode *mode)
-{
-	struct drm_encoder *enc = conn->encoder;
-	struct dove_drm_tda19988_encoder *tenc = to_tda19988_encoder(enc);
-
-	return tenc->slave.slave_funcs->mode_valid(enc, mode);
-}
-
 static int dove_drm_connector_tda19988_get_modes(struct drm_connector *conn)
 {
 	struct drm_display_mode *mode;
@@ -96,7 +87,7 @@ static const struct drm_encoder_funcs dove_drm_tda19988_enc_funcs = {
 
 static const struct drm_connector_helper_funcs dove_drm_conn_tda19988_helper_funcs = {
 	.get_modes	= dove_drm_connector_tda19988_get_modes,
-	.mode_valid	= dove_drm_connector_tda19988_mode_valid,
+	.mode_valid	= dove_drm_slave_encoder_mode_valid,
 	.best_encoder	= dove_drm_connector_best_encoder,
 };
 
@@ -225,22 +216,12 @@ static int dove_drm_conn_tda19988_create(struct drm_connector *conn,
 	return ret;
 }
 
-static int dove_drm_conn_tda19988_set_property(struct drm_connector *conn,
-	struct drm_property *property, uint64_t value)
-{
-	struct dove_drm_tda19988_encoder *tenc =
-		to_tda19988_encoder(conn->encoder);
-	struct drm_encoder_slave_funcs *sfuncs = tenc->slave.slave_funcs;
-
-	return sfuncs->set_property(&tenc->slave.base, conn, property, value);
-}
-
 static const struct dove_output_type dove_drm_conn_tda19988 = {
 	.connector_type	= DRM_MODE_CONNECTOR_HDMIA,
 	.polled		= DRM_CONNECTOR_POLL_HPD,
 	.detect		= dove_drm_conn_tda19988_detect,
 	.create		= dove_drm_conn_tda19988_create,
-	.set_property	= dove_drm_conn_tda19988_set_property,
+	.set_property	= dove_drm_slave_encoder_set_property,
 };
 
 struct drm_connector *dove_drm_tda19988_create(struct drm_device *dev)
-- 
1.7.4.4

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