diff options
Diffstat (limited to 'drivers/rtc/rtc-ds1307.c')
-rw-r--r-- | drivers/rtc/rtc-ds1307.c | 63 |
1 files changed, 25 insertions, 38 deletions
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 67ba8ae..bbf97e6 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -99,45 +99,38 @@ struct ds1307 { }; struct chip_desc { - char name[9]; unsigned nvram56:1; unsigned alarm:1; - enum ds_type type; }; -static const struct chip_desc chips[] = { { - .name = "ds1307", - .type = ds_1307, +static const struct chip_desc chips[] = { +[ds_1307] = { .nvram56 = 1, -}, { - .name = "ds1337", - .type = ds_1337, +}, +[ds_1337] = { .alarm = 1, -}, { - .name = "ds1338", - .type = ds_1338, +}, +[ds_1338] = { .nvram56 = 1, -}, { - .name = "ds1339", - .type = ds_1339, +}, +[ds_1339] = { .alarm = 1, -}, { - .name = "ds1340", - .type = ds_1340, -}, { - .name = "m41t00", - .type = m41t00, +}, +[ds_1340] = { +}, +[m41t00] = { }, }; -static inline const struct chip_desc *find_chip(const char *s) -{ - unsigned i; - - for (i = 0; i < ARRAY_SIZE(chips); i++) - if (strnicmp(s, chips[i].name, sizeof chips[i].name) == 0) - return &chips[i]; - return NULL; -} +static const struct i2c_device_id ds1307_id[] = { + { "ds1307", ds_1307 }, + { "ds1337", ds_1337 }, + { "ds1338", ds_1338 }, + { "ds1339", ds_1339 }, + { "ds1340", ds_1340 }, + { "m41t00", m41t00 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ds1307_id); static int ds1307_get_time(struct device *dev, struct rtc_time *t) { @@ -332,16 +325,9 @@ static int __devinit ds1307_probe(struct i2c_client *client, struct ds1307 *ds1307; int err = -ENODEV; int tmp; - const struct chip_desc *chip; + const struct chip_desc *chip = &chips[id->driver_data]; struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); - chip = find_chip(client->name); - if (!chip) { - dev_err(&client->dev, "unknown chip type '%s'\n", - client->name); - return -ENODEV; - } - if (!i2c_check_functionality(adapter, I2C_FUNC_I2C | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) return -EIO; @@ -362,7 +348,7 @@ static int __devinit ds1307_probe(struct i2c_client *client, ds1307->msg[1].len = sizeof(ds1307->regs); ds1307->msg[1].buf = ds1307->regs; - ds1307->type = chip->type; + ds1307->type = id->driver_data; switch (ds1307->type) { case ds_1337: @@ -551,6 +537,7 @@ static struct i2c_driver ds1307_driver = { }, .probe = ds1307_probe, .remove = __devexit_p(ds1307_remove), + .id_table = ds1307_id, }; static int __init ds1307_init(void) |