[PATCH 05/16] drm/exynos: convert encoder functions to bridge function

[Michael Tretter <m.tretter@xxxxxxxxxxxxxx>]

If other drivers use the exynos_dsi driver as a bridge, they might bring
their own encoder. Enable and disable the MIPI-DSI bridge using the
bridge functions instead of the encoder functions.

Signed-off-by: Michael Tretter <m.tretter@xxxxxxxxxxxxxx>
---
 drivers/gpu/drm/exynos/exynos_drm_dsi.c | 33 +++++++++++++++----------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 4d19630f33e7..31d62c10614a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1376,9 +1376,8 @@ static void exynos_dsi_unregister_te_irq(struct exynos_dsi *dsi)
 	}
 }
 
-static void exynos_dsi_enable(struct drm_encoder *encoder)
+static void exynos_dsi_enable(struct exynos_dsi *dsi)
 {
-	struct exynos_dsi *dsi = encoder_to_dsi(encoder);
 	struct drm_bridge *iter;
 	int ret;
 
@@ -1426,9 +1425,8 @@ static void exynos_dsi_enable(struct drm_encoder *encoder)
 	pm_runtime_put(dsi->dev);
 }
 
-static void exynos_dsi_disable(struct drm_encoder *encoder)
+static void exynos_dsi_disable(struct exynos_dsi *dsi)
 {
-	struct exynos_dsi *dsi = encoder_to_dsi(encoder);
 	struct drm_bridge *iter;
 
 	if (!(dsi->state & DSIM_STATE_ENABLED))
@@ -1519,11 +1517,6 @@ static int exynos_dsi_create_connector(struct drm_encoder *encoder)
 	return 0;
 }
 
-static const struct drm_encoder_helper_funcs exynos_dsi_encoder_helper_funcs = {
-	.enable = exynos_dsi_enable,
-	.disable = exynos_dsi_disable,
-};
-
 static int exynos_dsi_bridge_attach(struct drm_bridge *bridge,
 				    enum drm_bridge_attach_flags flags)
 {
@@ -1537,8 +1530,24 @@ static int exynos_dsi_bridge_attach(struct drm_bridge *bridge,
 	return 0;
 }
 
+static void exynos_dsi_bridge_enable(struct drm_bridge *bridge)
+{
+	struct exynos_dsi *dsi = bridge->driver_private;
+
+	exynos_dsi_enable(dsi);
+}
+
+static void exynos_dsi_bridge_disable(struct drm_bridge *bridge)
+{
+	struct exynos_dsi *dsi = bridge->driver_private;
+
+	exynos_dsi_disable(dsi);
+}
+
 static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = {
 	.attach = exynos_dsi_bridge_attach,
+	.enable = exynos_dsi_bridge_enable,
+	.disable = exynos_dsi_bridge_disable,
 };
 
 MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
@@ -1619,7 +1628,7 @@ static int exynos_dsi_host_detach(struct mipi_dsi_host *host,
 
 	if (dsi->panel) {
 		mutex_lock(&drm->mode_config.mutex);
-		exynos_dsi_disable(&dsi->encoder);
+		exynos_dsi_disable(dsi);
 		drm_panel_detach(dsi->panel);
 		dsi->panel = NULL;
 		dsi->connector.status = connector_status_disconnected;
@@ -1726,8 +1735,6 @@ static int exynos_dsi_bind(struct device *dev, struct device *master,
 
 	drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
 
-	drm_encoder_helper_add(encoder, &exynos_dsi_encoder_helper_funcs);
-
 	ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
 	if (ret < 0)
 		return ret;
@@ -1753,7 +1760,7 @@ static void exynos_dsi_unbind(struct device *dev, struct device *master,
 	struct drm_encoder *encoder = dev_get_drvdata(dev);
 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);
 
-	exynos_dsi_disable(encoder);
+	exynos_dsi_disable(dsi);
 
 	mipi_dsi_host_unregister(&dsi->dsi_host);
 }
-- 
2.20.1