Re: [PATCH v3 12/13] drm/connector: Split out orientation quirk detection (v2)

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Hi All,

Can I get a review or Acked-by from someone for this patch please?

The other patches in this series all have acks and it would be nice if
I can push this to drm-misc-next...

Regards,

Hans

On 18-11-2019 16:51, Hans de Goede wrote:
From: Derek Basehore <dbasehore@xxxxxxxxxxxx>

Not every platform needs quirk detection for panel orientation, so
split the drm_connector_init_panel_orientation_property into two
functions. One for platforms without the need for quirks, and the
other for platforms that need quirks.

Hans de Goede (changes in v2):

Rename the function from drm_connector_init_panel_orientation_property
to drm_connector_set_panel_orientation[_with_quirk] and pass in the
panel-orientation to set.

Beside the rename, also make the function set the passed in value
only once, if the value was set before (to a value other then
DRM_MODE_PANEL_ORIENTATION_UNKNOWN) make any further set calls a no-op.

This change is preparation for allowing the user to override the
panel-orientation for any connector from the kernel commandline.
When the panel-orientation is overridden this way, then we must ignore
the panel-orientation detection done by the driver.

Signed-off-by: Derek Basehore <dbasehore@xxxxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
  drivers/gpu/drm/drm_connector.c         | 74 ++++++++++++++++++-------
  drivers/gpu/drm/i915/display/icl_dsi.c  |  5 +-
  drivers/gpu/drm/i915/display/intel_dp.c |  9 ++-
  drivers/gpu/drm/i915/display/vlv_dsi.c  |  5 +-
  include/drm/drm_connector.h             |  9 ++-
  5 files changed, 71 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 4c766624b20d..40a985c411a6 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1114,7 +1114,8 @@ static const struct drm_prop_enum_list hdmi_colorspaces[] = {
   *	coordinates, so if userspace rotates the picture to adjust for
   *	the orientation it must also apply the same transformation to the
   *	touchscreen input coordinates. This property is initialized by calling
- *	drm_connector_init_panel_orientation_property().
+ *	drm_connector_set_panel_orientation() or
+ *	drm_connector_set_panel_orientation_with_quirk()
   *
   * scaling mode:
   *	This property defines how a non-native mode is upscaled to the native
@@ -1986,38 +1987,41 @@ void drm_connector_set_vrr_capable_property(
  EXPORT_SYMBOL(drm_connector_set_vrr_capable_property);
/**
- * drm_connector_init_panel_orientation_property -
- *	initialize the connecters panel_orientation property
- * @connector: connector for which to init the panel-orientation property.
- * @width: width in pixels of the panel, used for panel quirk detection
- * @height: height in pixels of the panel, used for panel quirk detection
+ * drm_connector_set_panel_orientation - sets the connecter's panel_orientation
+ * @connector: connector for which to set the panel-orientation property.
+ * @panel_orientation: drm_panel_orientation value to set
+ *
+ * This function sets the connector's panel_orientation and attaches
+ * a "panel orientation" property to the connector.
   *
- * This function should only be called for built-in panels, after setting
- * connector->display_info.panel_orientation first (if known).
+ * Calling this function on a connector where the panel_orientation has
+ * already been set is a no-op (e.g. the orientation has been overridden with
+ * a kernel commandline option).
   *
- * This function will check for platform specific (e.g. DMI based) quirks
- * overriding display_info.panel_orientation first, then if panel_orientation
- * is not DRM_MODE_PANEL_ORIENTATION_UNKNOWN it will attach the
- * "panel orientation" property to the connector.
+ * It is allowed to call this function with a panel_orientation of
+ * DRM_MODE_PANEL_ORIENTATION_UNKNOWN, in which case it is a no-op.
   *
   * Returns:
   * Zero on success, negative errno on failure.
   */
-int drm_connector_init_panel_orientation_property(
-	struct drm_connector *connector, int width, int height)
+int drm_connector_set_panel_orientation(
+	struct drm_connector *connector,
+	enum drm_panel_orientation panel_orientation)
  {
  	struct drm_device *dev = connector->dev;
  	struct drm_display_info *info = &connector->display_info;
  	struct drm_property *prop;
-	int orientation_quirk;
- orientation_quirk = drm_get_panel_orientation_quirk(width, height);
-	if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
-		info->panel_orientation = orientation_quirk;
+	/* Already set? */
+	if (info->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
+		return 0;
- if (info->panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
+	/* Don't attach the property if the orientation is unknown */
+	if (panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
  		return 0;
+ info->panel_orientation = panel_orientation;
+
  	prop = dev->mode_config.panel_orientation_property;
  	if (!prop) {
  		prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
@@ -2034,7 +2038,37 @@ int drm_connector_init_panel_orientation_property(
  				   info->panel_orientation);
  	return 0;
  }
-EXPORT_SYMBOL(drm_connector_init_panel_orientation_property);
+EXPORT_SYMBOL(drm_connector_set_panel_orientation);
+
+/**
+ * drm_connector_set_panel_orientation_with_quirk -
+ *	set the connecter's panel_orientation after checking for quirks
+ * @connector: connector for which to init the panel-orientation property.
+ * @panel_orientation: drm_panel_orientation value to set
+ * @width: width in pixels of the panel, used for panel quirk detection
+ * @height: height in pixels of the panel, used for panel quirk detection
+ *
+ * Like drm_connector_set_panel_orientation(), but with a check for platform
+ * specific (e.g. DMI based) quirks overriding the passed in panel_orientation.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_connector_set_panel_orientation_with_quirk(
+	struct drm_connector *connector,
+	enum drm_panel_orientation panel_orientation,
+	int width, int height)
+{
+	int orientation_quirk;
+
+	orientation_quirk = drm_get_panel_orientation_quirk(width, height);
+	if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
+		panel_orientation = orientation_quirk;
+
+	return drm_connector_set_panel_orientation(connector,
+						   panel_orientation);
+}
+EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk);
int drm_connector_set_obj_prop(struct drm_mode_object *obj,
  				    struct drm_property *property,
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 6e398c33a524..8cd51cf67d02 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1536,9 +1536,8 @@ static void icl_dsi_add_properties(struct intel_connector *connector)
connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT; - connector->base.display_info.panel_orientation =
-			intel_dsi_get_panel_orientation(connector);
-	drm_connector_init_panel_orientation_property(&connector->base,
+	drm_connector_set_panel_orientation_with_quirk(&connector->base,
+				intel_dsi_get_panel_orientation(connector),
  				connector->panel.fixed_mode->hdisplay,
  				connector->panel.fixed_mode->vdisplay);
  }
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 9b15ac4f2fb6..7be7a55f8772 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -7091,9 +7091,12 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
  	intel_connector->panel.backlight.power = intel_edp_backlight_power;
  	intel_panel_setup_backlight(connector, pipe);
- if (fixed_mode)
-		drm_connector_init_panel_orientation_property(
-			connector, fixed_mode->hdisplay, fixed_mode->vdisplay);
+	if (fixed_mode) {
+		/* We do not know the orientation, but their might be a quirk */
+		drm_connector_set_panel_orientation_with_quirk(connector,
+				DRM_MODE_PANEL_ORIENTATION_UNKNOWN,
+				fixed_mode->hdisplay, fixed_mode->vdisplay);
+	}
return true; diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
index a71b22bdd95b..fbb9b942ed90 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -1632,10 +1632,9 @@ static void vlv_dsi_add_properties(struct intel_connector *connector)
connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT; - connector->base.display_info.panel_orientation =
-			vlv_dsi_get_panel_orientation(connector);
-		drm_connector_init_panel_orientation_property(
+		drm_connector_set_panel_orientation_with_quirk(
  				&connector->base,
+				vlv_dsi_get_panel_orientation(connector),
  				connector->panel.fixed_mode->hdisplay,
  				connector->panel.fixed_mode->vdisplay);
  	}
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 3fbcf7d3fcaf..f7f02f58f5a7 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1547,8 +1547,13 @@ void drm_connector_set_link_status_property(struct drm_connector *connector,
  					    uint64_t link_status);
  void drm_connector_set_vrr_capable_property(
  		struct drm_connector *connector, bool capable);
-int drm_connector_init_panel_orientation_property(
-	struct drm_connector *connector, int width, int height);
+int drm_connector_set_panel_orientation(
+	struct drm_connector *connector,
+	enum drm_panel_orientation panel_orientation);
+int drm_connector_set_panel_orientation_with_quirk(
+	struct drm_connector *connector,
+	enum drm_panel_orientation panel_orientation,
+	int width, int height);
  int drm_connector_attach_max_bpc_property(struct drm_connector *connector,
  					  int min, int max);

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