[PATCH v4 07/10] drm/bridge/synopsys: dw-hdmi: Use bridge->mode_valid() callback

[Jose Abreu]

Now that we have a callback to check if bridge supports a given mode
we can use it in Synopsys Designware HDMI bridge so that we restrict
the number of probbed modes to the ones we can actually display.

Also, there is no need to use mode_fixup() callback as mode_valid()
will handle the mode validation.

NOTE: Only compile tested
NOTE 2: I also had to change the pdata declaration of mode_valid
custom callback so that the passed modes are const. I also changed
in the platforms I found. Not even compiled it though.

Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
Cc: Carlos Palminha <palminha@xxxxxxxxxxxx>
Cc: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>
Cc: Ville SyrjÃlà <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxx>
Cc: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Cc: Archit Taneja <architt@xxxxxxxxxxxxxx>
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c   | 40 +++++++++--------------------
 drivers/gpu/drm/imx/dw_hdmi-imx.c           |  4 +--
 drivers/gpu/drm/meson/meson_dw_hdmi.c       |  2 +-
 drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c |  2 +-
 include/drm/bridge/dw_hdmi.h                |  2 +-
 5 files changed, 17 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 4e1f54a..864e946 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1881,24 +1881,6 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
 	return ret;
 }
 
-static enum drm_mode_status
-dw_hdmi_connector_mode_valid(struct drm_connector *connector,
-			     struct drm_display_mode *mode)
-{
-	struct dw_hdmi *hdmi = container_of(connector,
-					   struct dw_hdmi, connector);
-	enum drm_mode_status mode_status = MODE_OK;
-
-	/* We don't support double-clocked modes */
-	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
-		return MODE_BAD;
-
-	if (hdmi->plat_data->mode_valid)
-		mode_status = hdmi->plat_data->mode_valid(connector, mode);
-
-	return mode_status;
-}
-
 static void dw_hdmi_connector_force(struct drm_connector *connector)
 {
 	struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
@@ -1924,7 +1906,6 @@ static void dw_hdmi_connector_force(struct drm_connector *connector)
 
 static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
 	.get_modes = dw_hdmi_connector_get_modes,
-	.mode_valid = dw_hdmi_connector_mode_valid,
 	.best_encoder = drm_atomic_helper_best_encoder,
 };
 
@@ -1947,18 +1928,21 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
 	return 0;
 }
 
-static bool dw_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
-				      const struct drm_display_mode *orig_mode,
-				      struct drm_display_mode *mode)
+static enum drm_mode_status dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
+						      const struct drm_display_mode *mode)
 {
 	struct dw_hdmi *hdmi = bridge->driver_private;
 	struct drm_connector *connector = &hdmi->connector;
-	enum drm_mode_status status;
+	enum drm_mode_status mode_status = MODE_OK;
 
-	status = dw_hdmi_connector_mode_valid(connector, mode);
-	if (status != MODE_OK)
-		return false;
-	return true;
+	/* We don't support double-clocked modes */
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+		return MODE_BAD;
+
+	if (hdmi->plat_data->mode_valid)
+		mode_status = hdmi->plat_data->mode_valid(connector, mode);
+
+	return mode_status;
 }
 
 static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
@@ -2002,7 +1986,7 @@ static void dw_hdmi_bridge_enable(struct drm_bridge *bridge)
 	.enable = dw_hdmi_bridge_enable,
 	.disable = dw_hdmi_bridge_disable,
 	.mode_set = dw_hdmi_bridge_mode_set,
-	.mode_fixup = dw_hdmi_bridge_mode_fixup,
+	.mode_valid = dw_hdmi_bridge_mode_valid,
 };
 
 static irqreturn_t dw_hdmi_i2c_irq(struct dw_hdmi *hdmi)
diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
index f039641..5f561c8 100644
--- a/drivers/gpu/drm/imx/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -148,7 +148,7 @@ static int dw_hdmi_imx_atomic_check(struct drm_encoder *encoder,
 };
 
 static enum drm_mode_status imx6q_hdmi_mode_valid(struct drm_connector *con,
-						  struct drm_display_mode *mode)
+						  const struct drm_display_mode *mode)
 {
 	if (mode->clock < 13500)
 		return MODE_CLOCK_LOW;
@@ -160,7 +160,7 @@ static enum drm_mode_status imx6q_hdmi_mode_valid(struct drm_connector *con,
 }
 
 static enum drm_mode_status imx6dl_hdmi_mode_valid(struct drm_connector *con,
-						   struct drm_display_mode *mode)
+						   const struct drm_display_mode *mode)
 {
 	if (mode->clock < 13500)
 		return MODE_CLOCK_LOW;
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index 7b86eb7..f043904 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -537,7 +537,7 @@ static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
 
 /* TOFIX Enable support for non-vic modes */
 static enum drm_mode_status dw_hdmi_mode_valid(struct drm_connector *connector,
-					       struct drm_display_mode *mode)
+					       const struct drm_display_mode *mode)
 {
 	unsigned int vclk_freq;
 	unsigned int venc_freq;
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 63dab6f..f820848 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -155,7 +155,7 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
 
 static enum drm_mode_status
 dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
-			    struct drm_display_mode *mode)
+			    const struct drm_display_mode *mode)
 {
 	const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
 	int pclk = mode->clock * 1000;
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index ed599be..4c8d4c8 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -125,7 +125,7 @@ struct dw_hdmi_phy_ops {
 struct dw_hdmi_plat_data {
 	struct regmap *regm;
 	enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
-					   struct drm_display_mode *mode);
+					   const struct drm_display_mode *mode);
 	unsigned long input_bus_format;
 	unsigned long input_bus_encoding;
 
-- 
1.9.1