drm_dev_register() sets connector->registration_state to DRM_CONNECTOR_REGISTERED and dev->registered to true. If drm_connector_set_panel_orientation() is first called after drm_dev_register(), it will fail several checks and results in following warning.
Add a function to create panel orientation property and set default value to UNKNOWN, so drivers can call this function to init the property earlier , and let the panel set the real value later.
[ 4.480976] ------------[ cut here ]------------ [ 4.485603] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:45 __drm_mode_object_add+0xb4/0xbc <snip> [ 4.609772] Call trace: [ 4.612208] __drm_mode_object_add+0xb4/0xbc [ 4.616466] drm_mode_object_add+0x20/0x2c [ 4.620552] drm_property_create+0xdc/0x174 [ 4.624723] drm_property_create_enum+0x34/0x98 [ 4.629241] drm_connector_set_panel_orientation+0x64/0xa0 [ 4.634716] boe_panel_get_modes+0x88/0xd8 [ 4.638802] drm_panel_get_modes+0x2c/0x48 [ 4.642887] panel_bridge_get_modes+0x1c/0x28 [ 4.647233] drm_bridge_connector_get_modes+0xa0/0xd4 [ 4.652273] drm_helper_probe_single_connector_modes+0x218/0x700 [ 4.658266] drm_mode_getconnector+0x1b4/0x45c [ 4.662699] drm_ioctl_kernel+0xac/0x128 [ 4.666611] drm_ioctl+0x268/0x410 [ 4.670002] drm_compat_ioctl+0xdc/0xf0 [ 4.673829] __arm64_compat_sys_ioctl+0xc8/0x100 [ 4.678436] el0_svc_common+0xf4/0x1c0 [ 4.682174] do_el0_svc_compat+0x28/0x3c [ 4.686088] el0_svc_compat+0x10/0x1c [ 4.689738] el0_sync_compat_handler+0xa8/0xcc [ 4.694171] el0_sync_compat+0x178/0x180 [ 4.698082] ---[ end trace b4f2db9d9c88610b ]--- [ 4.702721] ------------[ cut here ]------------ [ 4.707329] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:243 drm_object_attach_property+0x48/0xb8 <snip> [ 4.833830] Call trace: [ 4.836266] drm_object_attach_property+0x48/0xb8 [ 4.840958] drm_connector_set_panel_orientation+0x84/0xa0 [ 4.846432] boe_panel_get_modes+0x88/0xd8 [ 4.850516] drm_panel_get_modes+0x2c/0x48 [ 4.854600] panel_bridge_get_modes+0x1c/0x28 [ 4.858946] drm_bridge_connector_get_modes+0xa0/0xd4 [ 4.863984] drm_helper_probe_single_connector_modes+0x218/0x700 [ 4.869978] drm_mode_getconnector+0x1b4/0x45c [ 4.874410] drm_ioctl_kernel+0xac/0x128 [ 4.878320] drm_ioctl+0x268/0x410 [ 4.881711] drm_compat_ioctl+0xdc/0xf0 [ 4.885536] __arm64_compat_sys_ioctl+0xc8/0x100 [ 4.890142] el0_svc_common+0xf4/0x1c0 [ 4.893879] do_el0_svc_compat+0x28/0x3c [ 4.897791] el0_svc_compat+0x10/0x1c [ 4.901441] el0_sync_compat_handler+0xa8/0xcc [ 4.905873] el0_sync_compat+0x178/0x180 [ 4.909783] ---[ end trace b4f2db9d9c88610c ]---
Signed-off-by: Hsin-Yi Wang hsinyi@chromium.org Reviewed-by: Sean Paul seanpaul@chromium.org --- drivers/gpu/drm/drm_connector.c | 58 ++++++++++++++++++------- drivers/gpu/drm/i915/display/icl_dsi.c | 1 + drivers/gpu/drm/i915/display/intel_dp.c | 1 + drivers/gpu/drm/i915/display/vlv_dsi.c | 1 + include/drm/drm_connector.h | 2 + 5 files changed, 47 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 7631f76e7f34..7189baaabf41 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -1210,7 +1210,7 @@ static const struct drm_prop_enum_list dp_colorspaces[] = { * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel * 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 + * touchscreen input coordinates. This property value is set by calling * drm_connector_set_panel_orientation() or * drm_connector_set_panel_orientation_with_quirk() * @@ -2173,8 +2173,8 @@ EXPORT_SYMBOL(drm_connector_set_vrr_capable_property); * @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 sets the connector's panel_orientation value. If the property + * doesn't exist, it will return an error. * * 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 @@ -2205,19 +2205,11 @@ int drm_connector_set_panel_orientation( info->panel_orientation = panel_orientation;
prop = dev->mode_config.panel_orientation_property; - if (!prop) { - prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, - "panel orientation", - drm_panel_orientation_enum_list, - ARRAY_SIZE(drm_panel_orientation_enum_list)); - if (!prop) - return -ENOMEM; - - dev->mode_config.panel_orientation_property = prop; - } + if (WARN_ON(!prop)) + return -EINVAL;
- drm_object_attach_property(&connector->base, prop, - info->panel_orientation); + drm_object_property_set_value(&connector->base, prop, + info->panel_orientation); return 0; } EXPORT_SYMBOL(drm_connector_set_panel_orientation); @@ -2225,7 +2217,7 @@ EXPORT_SYMBOL(drm_connector_set_panel_orientation); /** * drm_connector_set_panel_orientation_with_quirk - * set the connector's panel_orientation after checking for quirks - * @connector: connector for which to init the panel-orientation property. + * @connector: connector for which to set 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 @@ -2252,6 +2244,40 @@ int drm_connector_set_panel_orientation_with_quirk( } EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk);
+/** + * drm_connector_init_panel_orientation_property - + * create the connector's panel orientation property + * + * This function attaches a "panel orientation" property to the connector + * and initializes its value to DRM_MODE_PANEL_ORIENTATION_UNKNOWN. + * + * The value of the property can be set by drm_connector_set_panel_orientation() + * or drm_connector_set_panel_orientation_with_quirk() later. + * + * Returns: + * Zero on success, negative errno on failure. + */ +int drm_connector_init_panel_orientation_property( + struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_property *prop; + + prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, + "panel orientation", + drm_panel_orientation_enum_list, + ARRAY_SIZE(drm_panel_orientation_enum_list)); + if (!prop) + return -ENOMEM; + + dev->mode_config.panel_orientation_property = prop; + drm_object_attach_property(&connector->base, prop, + DRM_MODE_PANEL_ORIENTATION_UNKNOWN); + + return 0; +} +EXPORT_SYMBOL(drm_connector_init_panel_orientation_property); + int drm_connector_set_obj_prop(struct drm_mode_object *obj, struct drm_property *property, uint64_t value) diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c index 9282978060b0..5ac4538e4283 100644 --- a/drivers/gpu/drm/i915/display/icl_dsi.c +++ b/drivers/gpu/drm/i915/display/icl_dsi.c @@ -1903,6 +1903,7 @@ static void icl_dsi_add_properties(struct intel_connector *connector)
connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT;
+ 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, diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index a5231ac3443a..f1d664e5abb2 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5263,6 +5263,7 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp, intel_panel_setup_backlight(connector, pipe);
if (fixed_mode) { + drm_connector_init_panel_orientation_property(connector); drm_connector_set_panel_orientation_with_quirk(connector, dev_priv->vbt.orientation, fixed_mode->hdisplay, fixed_mode->vdisplay); diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c index 9bee99fe5495..853855482af1 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c @@ -1632,6 +1632,7 @@ static void vlv_dsi_add_properties(struct intel_connector *connector)
connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT;
+ drm_connector_init_panel_orientation_property(&connector->base); drm_connector_set_panel_orientation_with_quirk( &connector->base, intel_dsi_get_panel_orientation(connector), diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 1922b278ffad..4396c1c4a5db 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1696,6 +1696,8 @@ 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_init_panel_orientation_property( + struct drm_connector *connector); int drm_connector_attach_max_bpc_property(struct drm_connector *connector, int min, int max);