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authorJavier Martinez Canillas <javier@osg.samsung.com>2017-04-04 15:26:29 -0400
committerMark Brown <broonie@kernel.org>2017-04-05 18:22:27 +0100
commit5cf015d9cb02c360582b624497b0a1716881cf28 (patch)
treef8d05c7161269e139bc24a38c4c524a7c9a79a2d /sound/soc/codecs
parenta5de5b74a50113564a1e0850e2da96c37c35e55d (diff)
downloadlinux-next-5cf015d9cb02c360582b624497b0a1716881cf28.tar.gz
ASoC: wm8978: Add OF device ID table
The driver doesn't have a struct of_device_id table but supported devices are registered via Device Trees. This is working on the assumption that a I2C device registered via OF will always match a legacy I2C device ID and that the MODALIAS reported will always be of the form i2c:<device>. But this could change in the future so the correct approach is to have an OF device ID table if the devices are registered via OF. Before this patch: $ modinfo sound/soc/codecs/snd-soc-wm8978.ko | grep alias alias: i2c:wm8978 After this patch: $ modinfo sound/soc/codecs/snd-soc-wm8978.ko | grep alias alias: i2c:wm8978 alias: of:N*T*Cwlf,wm8978C* alias: of:N*T*Cwlf,wm8978 Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs')
-rw-r--r--sound/soc/codecs/wm8978.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8978.c b/sound/soc/codecs/wm8978.c
index 90b2d418ef60..cf761e2d7546 100644
--- a/sound/soc/codecs/wm8978.c
+++ b/sound/soc/codecs/wm8978.c
@@ -1071,9 +1071,16 @@ static const struct i2c_device_id wm8978_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, wm8978_i2c_id);
+static const struct of_device_id wm8978_of_match[] = {
+ { .compatible = "wlf,wm8978", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, wm8978_of_match);
+
static struct i2c_driver wm8978_i2c_driver = {
.driver = {
.name = "wm8978",
+ .of_match_table = wm8978_of_match,
},
.probe = wm8978_i2c_probe,
.remove = wm8978_i2c_remove,