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| author | Javier Martinez Canillas <javier@osg.samsung.com> | 2017-03-03 11:29:24 -0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-03-09 01:29:34 +0100 |
| commit | ff764b88e63a097a6a8383f0f1f76e7fa5a5e096 (patch) | |
| tree | 6173c5ba4260ddc82142ed6c6f5807c063c8d01e /drivers/rtc/rtc-rs5c372.c | |
| parent | eb235c561d04ea64d19a0d3e1413f9c3bc25596c (diff) | |
| download | lwn-ff764b88e63a097a6a8383f0f1f76e7fa5a5e096.tar.gz lwn-ff764b88e63a097a6a8383f0f1f76e7fa5a5e096.zip | |
rtc: rs5c372: 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.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/rtc-rs5c372.c')
| -rw-r--r-- | drivers/rtc/rtc-rs5c372.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c index c8c757466783..d4eff8d7131f 100644 --- a/drivers/rtc/rtc-rs5c372.c +++ b/drivers/rtc/rtc-rs5c372.c @@ -15,6 +15,7 @@ #include <linux/bcd.h> #include <linux/slab.h> #include <linux/module.h> +#include <linux/of_device.h> /* * Ricoh has a family of I2C based RTCs, which differ only slightly from @@ -83,6 +84,35 @@ static const struct i2c_device_id rs5c372_id[] = { }; MODULE_DEVICE_TABLE(i2c, rs5c372_id); +static const struct of_device_id rs5c372_of_match[] = { + { + .compatible = "ricoh,r2025sd", + .data = (void *)rtc_r2025sd + }, + { + .compatible = "ricoh,r2221tl", + .data = (void *)rtc_r2221tl + }, + { + .compatible = "ricoh,rs5c372a", + .data = (void *)rtc_rs5c372a + }, + { + .compatible = "ricoh,rs5c372b", + .data = (void *)rtc_rs5c372b + }, + { + .compatible = "ricoh,rv5c386", + .data = (void *)rtc_rv5c386 + }, + { + .compatible = "ricoh,rv5c387a", + .data = (void *)rtc_rv5c387a + }, + { } +}; +MODULE_DEVICE_TABLE(of, rs5c372_of_match); + /* REVISIT: this assumes that: * - we're in the 21st century, so it's safe to ignore the century * bit for rv5c38[67] (REG_MONTH bit 7); @@ -581,7 +611,11 @@ static int rs5c372_probe(struct i2c_client *client, rs5c372->client = client; i2c_set_clientdata(client, rs5c372); - rs5c372->type = id->driver_data; + if (client->dev.of_node) + rs5c372->type = (enum rtc_type) + of_device_get_match_data(&client->dev); + else + rs5c372->type = id->driver_data; /* we read registers 0x0f then 0x00-0x0f; skip the first one */ rs5c372->regs = &rs5c372->buf[1]; @@ -673,6 +707,7 @@ static int rs5c372_remove(struct i2c_client *client) static struct i2c_driver rs5c372_driver = { .driver = { .name = "rtc-rs5c372", + .of_match_table = of_match_ptr(rs5c372_of_match), }, .probe = rs5c372_probe, .remove = rs5c372_remove, |