| Message ID | 20230208152807.3064242-6-sakari.ailus@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ACPI _CRS CSI-2 and MIPI DisCo for Imaging support | expand |
On Wed, Feb 08, 2023 at 05:28:04PM +0200, Sakari Ailus wrote: > 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. ... > + /* > + * 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_read_u32(fwnode, "rotation", &val) && > + ACPI_SUCCESS(acpi_get_physical_device_location(acpi_device_handle(device), > + &pld))) { > + if (fwnode_property_read_u32(fwnode, "rotation", &val) && > + ACPI_SUCCESS(acpi_get_physical_device_location(acpi_device_handle(device), > + &pld))) { Wouldn't be a bit better to use temporary variables for this? ret = fwnode_property_read_u32(fwnode, "rotation", &val); if (ret) { acpi_handle handle = acpi_device_handle(device); acpi_status status; 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); > + }
Hi Andy, On Wed, Feb 08, 2023 at 06:51:17PM +0200, Andy Shevchenko wrote: > On Wed, Feb 08, 2023 at 05:28:04PM +0200, Sakari Ailus wrote: > > 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. > > ... > > > + /* > > + * 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_read_u32(fwnode, "rotation", &val) && > > + ACPI_SUCCESS(acpi_get_physical_device_location(acpi_device_handle(device), > > + &pld))) { > > > + if (fwnode_property_read_u32(fwnode, "rotation", &val) && > > + ACPI_SUCCESS(acpi_get_physical_device_location(acpi_device_handle(device), > > + &pld))) { > > Wouldn't be a bit better to use temporary variables for this? > > ret = fwnode_property_read_u32(fwnode, "rotation", &val); > if (ret) { > acpi_handle handle = acpi_device_handle(device); > acpi_status status; > > status = acpi_get_physical_device_location(handle, &pld); > if (ACPI_SUCCESS(status)) { > ... > } > } > > ? It seems that val isn't used. So I'll use fwnode_property_present() which I think is fine to test in if () directly.
diff --git a/drivers/acpi/mipi.c b/drivers/acpi/mipi.c index c3ceee1d119e7..584c08c2b8989 100644 --- a/drivers/acpi/mipi.c +++ b/drivers/acpi/mipi.c @@ -667,16 +667,32 @@ 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 }; struct fwnode_handle *primary; + struct acpi_pld_info *pld; + unsigned int prop_index = 0; unsigned int i; + u32 val; int ret; device->swnodes = ads = crs_csi2_swnode_get(device->handle); 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_read_u32(fwnode, "rotation", &val) && + ACPI_SUCCESS(acpi_get_physical_device_location(acpi_device_handle(device), + &pld))) { + ads->dev_props[NEXT_PROPERTY(prop_index, DEV_ROTATION)] = + PROPERTY_ENTRY_U32("rotation", pld->rotation * 45U); + kfree(pld); + } + if (ACPI_FAILURE(acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer))) { acpi_handle_warn(acpi_device_handle(device), "cannot get path name\n"); return; 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 };
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@linux.intel.com> --- drivers/acpi/mipi.c | 16 ++++++++++++++++ include/acpi/acpi_bus.h | 1 + 2 files changed, 17 insertions(+)