[PATCH AUTOSEL for 4.9 112/219] ASoC: ssm4567: Add OF device ID table

Sasha Levin
2018-03-03T23:46:13Z

From: Javier Martinez Canillas <javier@osg.samsung.com>

[ Upstream commit 71c314d7ef2442cd798584a3dece8151215e1777 ]

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-ssm4567.ko | grep alias
alias: acpi*:INT343B:*
alias: i2c:ssm4567

After this patch:

$ modinfo sound/soc/codecs/snd-soc-ssm4567.ko | grep alias
alias: acpi*:INT343B:*
alias: of:N*T*Cadi,ssm4567C*
alias: of:N*T*Cadi,ssm4567
alias: i2c:ssm4567

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
sound/soc/codecs/ssm4567.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/sound/soc/codecs/ssm4567.c b/sound/soc/codecs/ssm4567.c
index 2bb5a11c9ba1..a622623e8558 100644
--- a/sound/soc/codecs/ssm4567.c
+++ b/sound/soc/codecs/ssm4567.c
@@ -485,6 +485,14 @@ static const struct i2c_device_id ssm4567_i2c_ids[] = {
};
MODULE_DEVICE_TABLE(i2c, ssm4567_i2c_ids);

+#ifdef CONFIG_OF
+static const struct of_device_id ssm4567_of_match[] = {
+ { .compatible = "adi,ssm4567", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ssm4567_of_match);
+#endif
+
#ifdef CONFIG_ACPI

static const struct acpi_device_id ssm4567_acpi_match[] = {
@@ -498,6 +506,7 @@ MODULE_DEVICE_TABLE(acpi, ssm4567_acpi_match);
static struct i2c_driver ssm4567_driver = {
.driver = {
.name = "ssm4567",
+ .of_match_table = of_match_ptr(ssm4567_of_match),
.acpi_match_table = ACPI_PTR(ssm4567_acpi_match),
},
.probe = ssm4567_i2c_probe,
--
2.14.1