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>
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@ -15,6 +15,7 @@
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#include <linux/bcd.h>
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#include <linux/bcd.h>
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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/*
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/*
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* Ricoh has a family of I2C based RTCs, which differ only slightly from
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* Ricoh has a family of I2C based RTCs, which differ only slightly from
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@ -83,6 +84,35 @@ static const struct i2c_device_id rs5c372_id[] = {
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};
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};
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MODULE_DEVICE_TABLE(i2c, rs5c372_id);
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MODULE_DEVICE_TABLE(i2c, rs5c372_id);
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static const struct of_device_id rs5c372_of_match[] = {
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{
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.compatible = "ricoh,r2025sd",
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.data = (void *)rtc_r2025sd
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},
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{
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.compatible = "ricoh,r2221tl",
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.data = (void *)rtc_r2221tl
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},
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{
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.compatible = "ricoh,rs5c372a",
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.data = (void *)rtc_rs5c372a
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},
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{
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.compatible = "ricoh,rs5c372b",
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.data = (void *)rtc_rs5c372b
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},
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{
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.compatible = "ricoh,rv5c386",
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.data = (void *)rtc_rv5c386
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},
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{
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.compatible = "ricoh,rv5c387a",
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.data = (void *)rtc_rv5c387a
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},
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{ }
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};
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MODULE_DEVICE_TABLE(of, rs5c372_of_match);
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/* REVISIT: this assumes that:
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/* REVISIT: this assumes that:
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* - we're in the 21st century, so it's safe to ignore the century
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* - we're in the 21st century, so it's safe to ignore the century
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* bit for rv5c38[67] (REG_MONTH bit 7);
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* bit for rv5c38[67] (REG_MONTH bit 7);
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@ -581,7 +611,11 @@ static int rs5c372_probe(struct i2c_client *client,
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rs5c372->client = client;
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rs5c372->client = client;
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i2c_set_clientdata(client, rs5c372);
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i2c_set_clientdata(client, rs5c372);
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rs5c372->type = id->driver_data;
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if (client->dev.of_node)
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rs5c372->type = (enum rtc_type)
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of_device_get_match_data(&client->dev);
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else
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rs5c372->type = id->driver_data;
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/* we read registers 0x0f then 0x00-0x0f; skip the first one */
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/* we read registers 0x0f then 0x00-0x0f; skip the first one */
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rs5c372->regs = &rs5c372->buf[1];
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rs5c372->regs = &rs5c372->buf[1];
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@ -673,6 +707,7 @@ static int rs5c372_remove(struct i2c_client *client)
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static struct i2c_driver rs5c372_driver = {
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static struct i2c_driver rs5c372_driver = {
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.driver = {
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.driver = {
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.name = "rtc-rs5c372",
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.name = "rtc-rs5c372",
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.of_match_table = of_match_ptr(rs5c372_of_match),
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},
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},
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.probe = rs5c372_probe,
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.probe = rs5c372_probe,
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.remove = rs5c372_remove,
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.remove = rs5c372_remove,
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