[PATCH v2 10/12] pwm: register dependency parser for firmware nodes
From: Tomeu Vizoso <hidden>
Date: 2015-07-01 09:45:25
Also in:
alsa-devel, dri-devel, linux-acpi, linux-fbdev, linux-gpio, linux-pwm, lkml
Subsystem:
pwm subsystem, the rest · Maintainers:
Uwe Kleine-König, Linus Torvalds
So others can find out what depends on pwm controllers, as specified in bindings/pwm/pwm.txt. Signed-off-by: Tomeu Vizoso <redacted> --- Changes in v2: None drivers/pwm/core.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 3a7769f..81b4fc0 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c@@ -917,11 +917,39 @@ static const struct file_operations pwm_debugfs_ops = { .release = seq_release, }; +static void pwm_get_dependencies(struct fwnode_handle *fwnode, + struct list_head *deps) +{ + struct device_node *np; + struct of_phandle_args pspec; + int count, i, ret; + + np = to_of_node(fwnode); + if (!np) + return; + + count = of_count_phandle_with_args(np, "pwms", + "#pwm-cells"); + for (i = 0; i < count; i++) { + ret = of_parse_phandle_with_args(np, "pwms", + "#pwm-cells", i, + &pspec); + if (ret || !pspec.np) + continue; + + fwnode_add_dependency(&pspec.np->fwnode, deps); + + of_node_put(pspec.np); + } +} + static int __init pwm_debugfs_init(void) { debugfs_create_file("pwm", S_IFREG | S_IRUGO, NULL, NULL, &pwm_debugfs_ops); + fwnode_add_dependency_parser(pwm_get_dependencies); + return 0; }
--
2.4.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel