From 7a9ec808ad46d1e02e5e766a83adc5f88e5df264 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 6 Sep 2017 08:35:42 -0400 Subject: media: v4l: fwnode: Add convenience function for parsing common external refs Add v4l2_fwnode_parse_reference_sensor_common for parsing common sensor properties that refer to adjacent devices such as flash or lens driver chips. As this is an association only, there's little a regular driver needs to know about these devices as such. Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Acked-by: Pavel Machek Reviewed-by: Sebastian Reichel Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-fwnode.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'drivers/media') 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 "); MODULE_AUTHOR("Sylwester Nawrocki "); -- cgit v1.2.1