diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2023-11-06 17:28:40 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-11-20 16:50:48 +0100 |
| commit | f533e43a2a3117cc59886cbcd66ca32e42cf1ea9 (patch) | |
| tree | 7df543b44330a2d45564e914b390b93abcaf8ef7 /drivers/acpi | |
| parent | a6cb0a611273767683d50fb908173b6f88052ce5 (diff) | |
| download | linux-f533e43a2a3117cc59886cbcd66ca32e42cf1ea9.tar.gz | |
ACPI: property: Dig "rotation" property for devices with CSI2 _CRS
Find the "rotation" property value for devices with _CRS CSI-2 resource
descriptors and use it to add the "rotation" property to the software
nodes representing the CSI-2 connection graph. That value typically
comes from the _PLD (Physical Location of Device) object if it is
present for the given device.
This way, camera sensor drivers that know the "rotation" property do not
need to care about _PLD on systems using ACPI.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[ rjw: Changelog edits, file rename ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/mipi-disco-img.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/acpi/mipi-disco-img.c b/drivers/acpi/mipi-disco-img.c index dcbaba91d4fec..b2c7a4922804a 100644 --- a/drivers/acpi/mipi-disco-img.c +++ b/drivers/acpi/mipi-disco-img.c @@ -595,6 +595,7 @@ static void init_crs_csi2_swnodes(struct crs_csi2 *csi2) struct acpi_buffer buffer = { .length = ACPI_ALLOCATE_BUFFER }; struct acpi_device_software_nodes *swnodes = csi2->swnodes; acpi_handle handle = csi2->handle; + unsigned int prop_index = 0; struct fwnode_handle *adev_fwnode; struct acpi_device *adev; acpi_status status; @@ -614,6 +615,22 @@ static void init_crs_csi2_swnodes(struct crs_csi2 *csi2) adev_fwnode = acpi_fwnode_handle(adev); + /* + * If the "rotation" property is not present, but _PLD is there, + * evaluate it to get the "rotation" value. + */ + if (!fwnode_property_present(adev_fwnode, "rotation")) { + struct acpi_pld_info *pld; + + status = acpi_get_physical_device_location(handle, &pld); + if (ACPI_SUCCESS(status)) { + swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_ROTATION)] = + PROPERTY_ENTRY_U32("rotation", + pld->rotation * 45U); + kfree(pld); + } + } + status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); if (ACPI_FAILURE(status)) { acpi_handle_info(handle, "Unable to get the path name\n"); |