From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from nblzone-211-213.nblnetworks.fi ([83.145.211.213]:60042 "EHLO hillosipuli.retiisi.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751929AbdGRTEG (ORCPT ); Tue, 18 Jul 2017 15:04:06 -0400 From: Sakari Ailus To: linux-media@vger.kernel.org Cc: linux-leds@vger.kernel.org, laurent.pinchart@ideasonboard.com, niklas.soderlund@ragnatech.se, hverkuil@xs4all.nl Subject: [RFC 10/19] v4l2-fwnode: Add convenience function for parsing common external refs Date: Tue, 18 Jul 2017 22:03:52 +0300 Message-Id: <20170718190401.14797-11-sakari.ailus@linux.intel.com> In-Reply-To: <20170718190401.14797-1-sakari.ailus@linux.intel.com> References: <20170718190401.14797-1-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 --- drivers/media/v4l2-core/v4l2-fwnode.c | 27 +++++++++++++++++++++++++++ include/media/v4l2-fwnode.h | 3 +++ 2 files changed, 30 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index bfc9e38766f3..8671262eb22c 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -486,6 +486,33 @@ int v4l2_fwnode_reference_parse( } EXPORT_SYMBOL_GPL(v4l2_fwnode_reference_parse); +int v4l2_fwnode_reference_parse_sensor_common( + struct device *dev, struct v4l2_async_notifier *notifier) +{ + static const struct { + char *name; + char *cells; + unsigned int nr_cells; + } props[] = { + { "flash", NULL, 0 }, + { "lens-focus", NULL, 0 }, + }; + unsigned int i; + int rval; + + for (i = 0; i < ARRAY_SIZE(props); i++) { + rval = v4l2_fwnode_reference_parse( + dev, notifier, props[i].name, props[i].cells, + props[i].nr_cells, sizeof(struct v4l2_async_subdev), + NULL); + if (rval < 0 && rval != -ENOENT) + return rval; + } + + return rval; +} +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 e27526bd744d..8cd4f8a75c3d 100644 --- a/include/media/v4l2-fwnode.h +++ b/include/media/v4l2-fwnode.h @@ -118,4 +118,7 @@ int v4l2_fwnode_reference_parse( struct fwnode_reference_args *args, struct v4l2_async_subdev *asd)); +int v4l2_fwnode_reference_parse_sensor_common( + struct device *dev, struct v4l2_async_notifier *notifier); + #endif /* _V4L2_FWNODE_H */ -- 2.11.0