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Subject[PATCH 3/6] ASoC: sta529: Add OF device ID table
Date
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-sta529.ko | grep alias
alias: i2c:sta529

After this patch:

$ modinfo sound/soc/codecs/snd-soc-sta529.ko | grep alias
alias: of:N*T*Cst,sta529C*
alias: of:N*T*Cst,sta529
alias: i2c:sta529

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
---

sound/soc/codecs/sta529.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/sound/soc/codecs/sta529.c b/sound/soc/codecs/sta529.c
index d4b384e4b266..660734359bf3 100644
--- a/sound/soc/codecs/sta529.c
+++ b/sound/soc/codecs/sta529.c
@@ -375,9 +375,16 @@ static const struct i2c_device_id sta529_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, sta529_i2c_id);

+static const struct of_device_id sta529_of_match[] = {
+ { .compatible = "st,sta529", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sta529_of_match);
+
static struct i2c_driver sta529_i2c_driver = {
.driver = {
.name = "sta529",
+ .of_match_table = sta529_of_match,
},
.probe = sta529_i2c_probe,
.remove = sta529_i2c_remove,
--
2.9.3
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