From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomeu Vizoso Date: Wed, 01 Jul 2015 09:41:02 +0000 Subject: [PATCH v2 07/12] backlight: register dependency parser for firmware nodes Message-Id: <1435743667-11987-8-git-send-email-tomeu.vizoso@collabora.com> List-Id: References: <1435743667-11987-1-git-send-email-tomeu.vizoso@collabora.com> In-Reply-To: <1435743667-11987-1-git-send-email-tomeu.vizoso@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org, linux-fbdev@vger.kernel.org, Tomeu Vizoso , linux-gpio@vger.kernel.org, Tomi Valkeinen , "Rafael J. Wysocki" , alsa-devel@alsa-project.org, dri-devel@lists.freedesktop.org, linux-acpi@vger.kernel.org, Mark Brown , linux-pwm@vger.kernel.org, Jingoo Han , Lee Jones , Jean-Christophe Plagniol-Villard So others can find out what depends on backlight devices, as specified in bindings/video/backlight/backlight.txt. Signed-off-by: Tomeu Vizoso --- Changes in v2: None drivers/video/backlight/backlight.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index bddc8b1..ab8f5e7 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -566,8 +566,22 @@ struct backlight_device *of_find_backlight_by_node(struct device_node *node) EXPORT_SYMBOL(of_find_backlight_by_node); #endif +static void backlight_get_dependencies(struct fwnode_handle *fwnode, + struct list_head *deps) +{ + struct device_node *np; + + np = of_parse_phandle(to_of_node(fwnode), "backlight", 0); + if (!np) + return; + + fwnode_add_dependency(&np->fwnode, deps); +} + static void __exit backlight_class_exit(void) { + fwnode_remove_dependency_parser(backlight_get_dependencies); + class_destroy(backlight_class); } @@ -586,6 +600,8 @@ static int __init backlight_class_init(void) mutex_init(&backlight_dev_list_mutex); BLOCKING_INIT_NOTIFIER_HEAD(&backlight_notifier); + fwnode_add_dependency_parser(backlight_get_dependencies); + return 0; } -- 2.4.1