[PATCH 09/14] drm/i915: Add property to set HDMI aspect ratio

Rodrigo Vivi
2014-04-18T21:04:46Z

From: Vandana Kannan <vandana.kannan@intel.com>

Added a property to enable user space to set aspect ratio for HDMI displays.
If there is no user specified value, then PAR_NONE/Automatic option is set
by default. User can select aspect ratio 4:3 or 16:9. The aspect ratio
selected by user would come into effect with a mode set.

v2: Daniel's review comments incorporated.
Call for a mode set to update property.

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Cc: Jesse Barnes <jesse.barnes@intel.com>
Cc: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_drv.h | 2 ++
drivers/gpu/drm/i915/intel_hdmi.c | 12 ++++++++++++
drivers/gpu/drm/i915/intel_modes.c | 28 ++++++++++++++++++++++++++++
4 files changed, 43 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6e14de9..4e81ce1 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1440,6 +1440,7 @@ struct drm_i915_private {

struct drm_property *broadcast_rgb_property;
struct drm_property *force_audio_property;
+ struct drm_property *aspect_ratio_property;

uint32_t hw_context_size;
struct list_head context_list;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index c684427..5d3811c 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -485,6 +485,7 @@ struct intel_hdmi {
bool has_audio;
enum hdmi_force_audio force_audio;
bool rgb_quant_range_selectable;
+ enum hdmi_picture_aspect aspect_ratio;
void (*write_infoframe)(struct drm_encoder *encoder,
enum hdmi_infoframe_type type,
const void *frame, ssize_t len);
@@ -863,6 +864,7 @@ int intel_connector_update_modes(struct drm_connector *connector,
int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
void intel_attach_force_audio_property(struct drm_connector *connector);
void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
+void intel_attach_aspect_ratio_property(struct drm_connector *connector);

/* intel_overlay.c */
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index b606162..adc751d 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -367,6 +367,9 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
union hdmi_infoframe frame;
int ret;

+ /* Set user selected PAR to incoming mode's member */
+ adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio;
+
ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
adjusted_mode);
if (ret < 0) {
@@ -1105,6 +1108,11 @@ intel_hdmi_set_property(struct drm_connector *connector,
goto done;
}

+ if (property == dev_priv->aspect_ratio_property) {
+ intel_hdmi->aspect_ratio = val;
+ goto done;
+ }
+
return -EINVAL;

done:
@@ -1253,6 +1261,7 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c
{
intel_attach_force_audio_property(connector);
intel_attach_broadcast_rgb_property(connector);
+ intel_attach_aspect_ratio_property(connector);
intel_hdmi->color_range_auto = true;
}

@@ -1317,6 +1326,9 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
intel_connector->get_hw_state = intel_connector_get_hw_state;
intel_connector->unregister = intel_connector_unregister;

+ /* Initialize aspect ratio member of intel_hdmi */
+ intel_hdmi->aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
+
intel_hdmi_add_properties(intel_hdmi, connector);

intel_connector_attach_encoder(intel_connector, intel_encoder);
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c
index 0e860f3..6f814da 100644
--- a/drivers/gpu/drm/i915/intel_modes.c
+++ b/drivers/gpu/drm/i915/intel_modes.c
@@ -126,3 +126,31 @@ intel_attach_broadcast_rgb_property(struct drm_connector *connector)

drm_object_attach_property(&connector->base, prop, 0);
}
+
+static const struct drm_prop_enum_list aspect_ratio_names[] = {
+ { HDMI_PICTURE_ASPECT_NONE, "Automatic" },
+ { HDMI_PICTURE_ASPECT_4_3, "4:3" },
+ { HDMI_PICTURE_ASPECT_16_9, "16:9" },
+};
+
+void
+intel_attach_aspect_ratio_property(struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_property *prop;
+
+ prop = dev_priv->aspect_ratio_property;
+ if (prop == NULL) {
+ prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
+ "HDMI aspect ratio",
+ aspect_ratio_names,
+ ARRAY_SIZE(aspect_ratio_names));
+ if (prop == NULL)
+ return;
+
+ dev_priv->aspect_ratio_property = prop;
+ }
+
+ drm_object_attach_property(&connector->base, prop, 0);
+}
--
1.8.3.1

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