[PATCH] drm/sti: hdmi: automatically check DVI/HDMI mode

[Vincent Abriou]

Remove the hdmi_mode_property and use drm_detect_hdmi_monitor function
to check whether the connected monitor is HDMI capable or DVI only.

Signed-off-by: Vincent Abriou <vincent.abriou at st.com>
---
 drivers/gpu/drm/sti/sti_hdmi.c | 31 ++++++-------------------------
 drivers/gpu/drm/sti/sti_hdmi.h | 17 ++---------------
 2 files changed, 8 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index 6862d59..ce2dcba 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -158,7 +158,6 @@ struct sti_hdmi_connector {
 	struct drm_encoder *encoder;
 	struct sti_hdmi *hdmi;
 	struct drm_property *colorspace_property;
-	struct drm_property *hdmi_mode_property;
 };
 
 #define to_sti_hdmi_connector(x) \
@@ -265,7 +264,7 @@ static void hdmi_config(struct sti_hdmi *hdmi)
 
 	/* Select encryption type and the framing mode */
 	conf |= HDMI_CFG_ESS_NOT_OESS;
-	if (hdmi->hdmi_mode == HDMI_MODE_HDMI)
+	if (hdmi->hdmi_monitor)
 		conf |= HDMI_CFG_HDMI_NOT_DVI;
 
 	/* Set Hsync polarity */
@@ -970,6 +969,11 @@ static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
 	if (!edid)
 		goto fail;
 
+	hdmi->hdmi_monitor = drm_detect_hdmi_monitor(edid);
+	DRM_DEBUG_KMS("%s : %dx%d cm\n",
+		      (hdmi->hdmi_monitor ? "hdmi monitor" : "dvi monitor"),
+		      edid->width_cm, edid->height_cm);
+
 	count = drm_add_edid_modes(connector, edid);
 	drm_mode_connector_update_edid_property(connector, edid);
 	drm_edid_to_eld(connector, edid);
@@ -1053,19 +1057,6 @@ static void sti_hdmi_connector_init_property(struct drm_device *drm_dev,
 	}
 	hdmi_connector->colorspace_property = prop;
 	drm_object_attach_property(&connector->base, prop, hdmi->colorspace);
-
-	/* hdmi_mode property */
-	hdmi->hdmi_mode = DEFAULT_HDMI_MODE;
-	prop = drm_property_create_enum(drm_dev, 0, "hdmi_mode",
-					hdmi_mode_names,
-					ARRAY_SIZE(hdmi_mode_names));
-	if (!prop) {
-		DRM_ERROR("fails to create colorspace property\n");
-		return;
-	}
-	hdmi_connector->hdmi_mode_property = prop;
-	drm_object_attach_property(&connector->base, prop, hdmi->hdmi_mode);
-
 }
 
 static int
@@ -1083,11 +1074,6 @@ sti_hdmi_connector_set_property(struct drm_connector *connector,
 		return 0;
 	}
 
-	if (property == hdmi_connector->hdmi_mode_property) {
-		hdmi->hdmi_mode = val;
-		return 0;
-	}
-
 	DRM_ERROR("failed to set hdmi connector property\n");
 	return -EINVAL;
 }
@@ -1107,11 +1093,6 @@ sti_hdmi_connector_get_property(struct drm_connector *connector,
 		return 0;
 	}
 
-	if (property == hdmi_connector->hdmi_mode_property) {
-		*val = hdmi->hdmi_mode;
-		return 0;
-	}
-
 	DRM_ERROR("failed to get hdmi connector property\n");
 	return -EINVAL;
 }
diff --git a/drivers/gpu/drm/sti/sti_hdmi.h b/drivers/gpu/drm/sti/sti_hdmi.h
index 119bc35..4070123 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.h
+++ b/drivers/gpu/drm/sti/sti_hdmi.h
@@ -30,19 +30,6 @@ struct hdmi_audio_params {
 	struct hdmi_audio_infoframe cea;
 };
 
-/* values for the framing mode property */
-enum sti_hdmi_modes {
-	HDMI_MODE_HDMI,
-	HDMI_MODE_DVI,
-};
-
-static const struct drm_prop_enum_list hdmi_mode_names[] = {
-	{ HDMI_MODE_HDMI, "hdmi" },
-	{ HDMI_MODE_DVI, "dvi" },
-};
-
-#define DEFAULT_HDMI_MODE HDMI_MODE_HDMI
-
 static const struct drm_prop_enum_list colorspace_mode_names[] = {
 	{ HDMI_COLORSPACE_RGB, "rgb" },
 	{ HDMI_COLORSPACE_YUV422, "yuv422" },
@@ -73,7 +60,7 @@ static const struct drm_prop_enum_list colorspace_mode_names[] = {
  * @reset: reset control of the hdmi phy
  * @ddc_adapt: i2c ddc adapter
  * @colorspace: current colorspace selected
- * @hdmi_mode: select framing for HDMI or DVI
+ * @hdmi_monitor: true if HDMI monitor detected else DVI monitor assumed
  * @audio_pdev: ASoC hdmi-codec platform device
  * @audio: hdmi audio parameters.
  * @drm_connector: hdmi connector
@@ -98,7 +85,7 @@ struct sti_hdmi {
 	struct reset_control *reset;
 	struct i2c_adapter *ddc_adapt;
 	enum hdmi_colorspace colorspace;
-	enum sti_hdmi_modes hdmi_mode;
+	bool hdmi_monitor;
 	struct platform_device *audio_pdev;
 	struct hdmi_audio_params audio;
 	struct drm_connector *drm_connector;
-- 
2.7.4