The sensor orientation is read from the _PLC ACPI buffer and converted to a v4l2 format. See https://uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf page 351 for a definition of the Panel property. The sensor rotation is read from the SSDB ACPI buffer and converted into degrees. Signed-off-by: Fabian Wüthrich <me@xxxxxxxx> --- drivers/media/pci/intel/ipu3/cio2-bridge.c | 60 ++++++++++++++++++++-- drivers/media/pci/intel/ipu3/cio2-bridge.h | 16 ++++++ 2 files changed, 72 insertions(+), 4 deletions(-) diff --git a/drivers/media/pci/intel/ipu3/cio2-bridge.c b/drivers/media/pci/intel/ipu3/cio2-bridge.c index c2199042d3db..503809907b92 100644 --- a/drivers/media/pci/intel/ipu3/cio2-bridge.c +++ b/drivers/media/pci/intel/ipu3/cio2-bridge.c @@ -29,6 +29,7 @@ static const struct cio2_sensor_config cio2_supported_sensors[] = { static const struct cio2_property_names prop_names = { .clock_frequency = "clock-frequency", .rotation = "rotation", + .orientation = "orientation", .bus_type = "bus-type", .data_lanes = "data-lanes", .remote_endpoint = "remote-endpoint", @@ -72,11 +73,51 @@ static int cio2_bridge_read_acpi_buffer(struct acpi_device *adev, char *id, return ret; } +static u32 cio2_bridge_parse_rotation(struct cio2_sensor *sensor) +{ + switch (sensor->ssdb.degree) { + case CIO2_SENSOR_ROTATION_NORMAL: + return 0; + case CIO2_SENSOR_ROTATION_INVERTED: + return 180; + default: + dev_warn(&sensor->adev->dev, + "Unknown rotation %d. Assume 0 degree rotation\n", + sensor->ssdb.degree); + return 0; + } +} + +static enum v4l2_fwnode_orientation cio2_bridge_parse_orientation(struct cio2_sensor *sensor) +{ + switch (sensor->pld->panel) { + case CIO2_PLD_PANEL_FRONT: + return V4L2_FWNODE_ORIENTATION_FRONT; + case CIO2_PLD_PANEL_BACK: + return V4L2_FWNODE_ORIENTATION_BACK; + case CIO2_PLD_PANEL_TOP: + case CIO2_PLD_PANEL_LEFT: + case CIO2_PLD_PANEL_RIGHT: + case CIO2_PLD_PANEL_UNKNOWN: + return V4L2_FWNODE_ORIENTATION_EXTERNAL; + default: + dev_warn(&sensor->adev->dev, "Unknown _PLD panel value %d\n", + sensor->pld->panel); + return V4L2_FWNODE_ORIENTATION_EXTERNAL; + } +} + static void cio2_bridge_create_fwnode_properties( struct cio2_sensor *sensor, struct cio2_bridge *bridge, const struct cio2_sensor_config *cfg) { + u32 rotation; + enum v4l2_fwnode_orientation orientation; + + rotation = cio2_bridge_parse_rotation(sensor); + orientation = cio2_bridge_parse_orientation(sensor); + sensor->prop_names = prop_names; sensor->local_ref[0].node = &sensor->swnodes[SWNODE_CIO2_ENDPOINT]; @@ -85,9 +126,12 @@ static void cio2_bridge_create_fwnode_properties( sensor->dev_properties[0] = PROPERTY_ENTRY_U32( sensor->prop_names.clock_frequency, sensor->ssdb.mclkspeed); - sensor->dev_properties[1] = PROPERTY_ENTRY_U8( + sensor->dev_properties[1] = PROPERTY_ENTRY_U32( sensor->prop_names.rotation, - sensor->ssdb.degree); + rotation); + sensor->dev_properties[2] = PROPERTY_ENTRY_U32( + sensor->prop_names.orientation, + orientation); sensor->ep_properties[0] = PROPERTY_ENTRY_U32( sensor->prop_names.bus_type, @@ -159,6 +203,7 @@ static void cio2_bridge_unregister_sensors(struct cio2_bridge *bridge) for (i = 0; i < bridge->n_sensors; i++) { sensor = &bridge->sensors[i]; software_node_unregister_nodes(sensor->swnodes); + ACPI_FREE(sensor->pld); acpi_dev_put(sensor->adev); } } @@ -170,6 +215,7 @@ static int cio2_bridge_connect_sensor(const struct cio2_sensor_config *cfg, struct fwnode_handle *fwnode; struct cio2_sensor *sensor; struct acpi_device *adev; + acpi_status status; int ret; for_each_acpi_dev_match(adev, cfg->hid, NULL, -1) { @@ -193,11 +239,15 @@ static int cio2_bridge_connect_sensor(const struct cio2_sensor_config *cfg, if (ret) goto err_put_adev; + status = acpi_get_physical_device_location(adev->handle, &sensor->pld); + if (ACPI_FAILURE(status)) + goto err_put_adev; + if (sensor->ssdb.lanes > CIO2_MAX_LANES) { dev_err(&adev->dev, "Number of lanes in SSDB is invalid\n"); ret = -EINVAL; - goto err_put_adev; + goto err_free_pld; } cio2_bridge_create_fwnode_properties(sensor, bridge, cfg); @@ -205,7 +255,7 @@ static int cio2_bridge_connect_sensor(const struct cio2_sensor_config *cfg, ret = software_node_register_nodes(sensor->swnodes); if (ret) - goto err_put_adev; + goto err_free_pld; fwnode = software_node_fwnode(&sensor->swnodes[ SWNODE_SENSOR_HID]); @@ -226,6 +276,8 @@ static int cio2_bridge_connect_sensor(const struct cio2_sensor_config *cfg, err_free_swnodes: software_node_unregister_nodes(sensor->swnodes); +err_free_pld: + ACPI_FREE(sensor->pld); err_put_adev: acpi_dev_put(sensor->adev); err_out: diff --git a/drivers/media/pci/intel/ipu3/cio2-bridge.h b/drivers/media/pci/intel/ipu3/cio2-bridge.h index dd0ffcafa489..e1e388cc9f45 100644 --- a/drivers/media/pci/intel/ipu3/cio2-bridge.h +++ b/drivers/media/pci/intel/ipu3/cio2-bridge.h @@ -12,6 +12,19 @@ #define CIO2_MAX_LANES 4 #define MAX_NUM_LINK_FREQS 3 +/* Values are estimated guesses as we don't have a spec */ +#define CIO2_SENSOR_ROTATION_NORMAL 0 +#define CIO2_SENSOR_ROTATION_INVERTED 1 + +/* Panel position defined in _PLD section of ACPI Specification 6.3 */ +#define CIO2_PLD_PANEL_TOP 0 +#define CIO2_PLD_PANEL_BOTTOM 1 +#define CIO2_PLD_PANEL_LEFT 2 +#define CIO2_PLD_PANEL_RIGHT 3 +#define CIO2_PLD_PANEL_FRONT 4 +#define CIO2_PLD_PANEL_BACK 5 +#define CIO2_PLD_PANEL_UNKNOWN 6 + #define CIO2_SENSOR_CONFIG(_HID, _NR, ...) \ (const struct cio2_sensor_config) { \ .hid = _HID, \ @@ -80,6 +93,7 @@ struct cio2_sensor_ssdb { struct cio2_property_names { char clock_frequency[16]; char rotation[9]; + char orientation[12]; char bus_type[9]; char data_lanes[11]; char remote_endpoint[16]; @@ -106,6 +120,8 @@ struct cio2_sensor { struct cio2_node_names node_names; struct cio2_sensor_ssdb ssdb; + struct acpi_pld_info *pld; + struct cio2_property_names prop_names; struct property_entry ep_properties[5]; struct property_entry dev_properties[3]; -- 2.31.0
