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drm/connector: Split out orientation quirk detection (v2)

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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.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200105155120.96466-1-hdegoede@redhat.com
This commit is contained in:
Derek Basehore
2020-01-05 16:51:19 +01:00
committed by Hans de Goede
parent b4c32073b8
commit 69654c632d
5 changed files with 72 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
drivers/gpu/drm/drm_connector.c
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@@ -1139,7 +1139,8 @@ static const struct drm_prop_enum_list dp_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
@@ -2046,38 +2047,41 @@ 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 should only be called for built-in panels, after setting
* connector->display_info.panel_orientation first (if known).
* This function sets the connector's panel_orientation and attaches
* a "panel orientation" property to the connector.
*
* 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.
* 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).
*
* 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;
if (info->panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
/* Already set? */
if (info->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
return 0;
/* 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,
@@ -2094,7 +2098,37 @@ 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,