From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from nblzone-211-213.nblnetworks.fi ([83.145.211.213]:47464 "EHLO hillosipuli.retiisi.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756137AbdIHNSc (ORCPT ); Fri, 8 Sep 2017 09:18:32 -0400 From: Sakari Ailus To: linux-media@vger.kernel.org Cc: niklas.soderlund@ragnatech.se, robh@kernel.org, hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, linux-acpi@vger.kernel.org, mika.westerberg@intel.com, devicetree@vger.kernel.org, pavel@ucw.cz, sre@kernel.org Subject: [PATCH v9 21/24] v4l: fwnode: Add convenience function for parsing common external refs Date: Fri, 8 Sep 2017 16:18:19 +0300 Message-Id: <20170908131822.31020-17-sakari.ailus@linux.intel.com> In-Reply-To: <20170908131235.30294-1-sakari.ailus@linux.intel.com> References: <20170908131235.30294-1-sakari.ailus@linux.intel.com> Sender: linux-media-owner@vger.kernel.org List-ID: 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 --- drivers/media/v4l2-core/v4l2-fwnode.c | 35 +++++++++++++++++++++++++++++++++++ include/media/v4l2-fwnode.h | 13 +++++++++++++ 2 files changed, 48 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index 56eee5bbd3b5..b9e60a0e8f86 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -589,6 +589,41 @@ static int v4l2_fwnode_reference_parse_int_props( return ret; } +int v4l2_fwnode_reference_parse_sensor_common( + struct device *dev, struct v4l2_async_notifier *notifier) +{ + static const char *led_props[] = { "led" }; + static const struct { + const char *name; + const char **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) { + dev_warn(dev, "parsing property \"%s\" failed (%d)\n", + props[i].name, ret); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_fwnode_reference_parse_sensor_common); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("Sakari Ailus "); MODULE_AUTHOR("Sylwester Nawrocki "); diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h index 3819a73c3c8a..bcec1ce101dc 100644 --- a/include/media/v4l2-fwnode.h +++ b/include/media/v4l2-fwnode.h @@ -257,4 +257,17 @@ int v4l2_async_notifier_parse_fwnode_endpoints( 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 + * + * Return: 0 on success + * -ENOMEM if memory allocation failed + * -EINVAL if property parsing failed + */ +int v4l2_fwnode_reference_parse_sensor_common( + struct device *dev, struct v4l2_async_notifier *notifier); + #endif /* _V4L2_FWNODE_H */ -- 2.11.0