Dig "rotation" property value for devices with _CRS CSI2 resource
descriptor. The value comes from _PLD (physical location of device)
object, if it exists for the device.
This way camera sensor drivers that know the "rotation" property do not
need to care about _PLD on ACPI.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/acpi/mipi.c | 17 +++++++++++++++++
include/acpi/acpi_bus.h | 1 +
2 files changed, 18 insertions(+)
diff --git a/drivers/acpi/mipi.c b/drivers/acpi/mipi.c
index f81a3bb860609..08e67163b2b80 100644
--- a/drivers/acpi/mipi.c
+++ b/drivers/acpi/mipi.c
@@ -667,10 +667,12 @@ static void init_port_csi2_remote(struct acpi_device *device,
*/
void acpi_init_swnodes(struct acpi_device *device)
{
+ struct fwnode_handle *fwnode = acpi_fwnode_handle(device);
struct acpi_device_software_nodes *ads;
struct acpi_buffer buffer = { .length = ACPI_ALLOCATE_BUFFER };
acpi_handle handle = acpi_device_handle(device);
struct fwnode_handle *primary;
+ unsigned int prop_index = 0;
acpi_status status;
unsigned int i;
int ret;
@@ -679,6 +681,21 @@ void acpi_init_swnodes(struct acpi_device *device)
if (!ads)
return;
+ /*
+ * Check if "rotation" property exists and if it doesn't but there's a
+ * _PLD object, then get the rotation value from there.
+ */
+ if (!fwnode_property_present(fwnode, "rotation")) {
+ struct acpi_pld_info *pld;
+
+ status = acpi_get_physical_device_location(handle, &pld);
+ if (ACPI_SUCCESS(status)) {
+ ads->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_warn(handle, "cannot get path name\n");
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index e05d1c1f6ac23..f73e65a21b894 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -361,6 +361,7 @@ struct acpi_device_data {
struct acpi_gpio_mapping;
enum acpi_device_swnode_dev_props {
+ ACPI_DEVICE_SWNODE_DEV_ROTATION,
ACPI_DEVICE_SWNODE_DEV_NUM_OF,
ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES
};
--
2.30.2
