diff options
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-fwnode.c | 35 | ||||
| -rw-r--r-- | include/media/v4l2-async.h | 3 | ||||
| -rw-r--r-- | include/media/v4l2-fwnode.h | 21 |
3 files changed, 58 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index f8cd88f791c4..39387dc6cadd 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -865,6 +865,41 @@ error: return ret; } +int v4l2_async_notifier_parse_fwnode_sensor_common( + struct device *dev, struct v4l2_async_notifier *notifier) +{ + static const char * const led_props[] = { "led" }; + static const struct { + const char *name; + const char * const *props; + unsigned int nprops; + } props[] = { + { "flash-leds", led_props, ARRAY_SIZE(led_props) }, + { "lens-focus", NULL, 0 }, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(props); i++) { + int ret; + + if (props[i].props && is_acpi_node(dev_fwnode(dev))) + ret = v4l2_fwnode_reference_parse_int_props( + dev, notifier, props[i].name, + props[i].props, props[i].nprops); + else + ret = v4l2_fwnode_reference_parse( + dev, notifier, props[i].name); + if (ret && ret != -ENOENT) { + dev_warn(dev, "parsing property \"%s\" failed (%d)\n", + props[i].name, ret); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_async_notifier_parse_fwnode_sensor_common); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("Sakari Ailus <sakari.ailus@linux.intel.com>"); MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index 17c4ac7c73e8..8d8cfc3f3100 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -156,7 +156,8 @@ void v4l2_async_notifier_unregister(struct v4l2_async_notifier *notifier); * Release memory resources related to a notifier, including the async * sub-devices allocated for the purposes of the notifier but not the notifier * itself. The user is responsible for calling this function to clean up the - * notifier after calling @v4l2_async_notifier_parse_fwnode_endpoints. + * notifier after calling @v4l2_async_notifier_parse_fwnode_endpoints or + * @v4l2_fwnode_reference_parse_sensor_common. * * There is no harm from calling v4l2_async_notifier_cleanup in other * cases as long as its memory has been zeroed after it has been diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h index 105cfeee44ef..ca50108dfd8f 100644 --- a/include/media/v4l2-fwnode.h +++ b/include/media/v4l2-fwnode.h @@ -319,4 +319,25 @@ int v4l2_async_notifier_parse_fwnode_endpoints_by_port( struct v4l2_fwnode_endpoint *vep, struct v4l2_async_subdev *asd)); +/** + * v4l2_fwnode_reference_parse_sensor_common - parse common references on + * sensors for async sub-devices + * @dev: the device node the properties of which are parsed for references + * @notifier: the async notifier where the async subdevs will be added + * + * Parse common sensor properties for remote devices related to the + * sensor and set up async sub-devices for them. + * + * Any notifier populated using this function must be released with a call to + * v4l2_async_notifier_release() after it has been unregistered and the async + * sub-devices are no longer in use, even in the case the function returned an + * error. + * + * Return: 0 on success + * -ENOMEM if memory allocation failed + * -EINVAL if property parsing failed + */ +int v4l2_async_notifier_parse_fwnode_sensor_common( + struct device *dev, struct v4l2_async_notifier *notifier); + #endif /* _V4L2_FWNODE_H */ |