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rtc: rtc-ds1307 add ds1388
Extend the ds1307 driver to support ds1388 too. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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parent
3a72970054
commit
33df2ee1bb
1 changed files with 15 additions and 4 deletions
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@ -31,6 +31,7 @@ enum ds_type {
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ds_1338,
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ds_1339,
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ds_1340,
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ds_1388,
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m41t00,
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rx_8025,
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// rs5c372 too? different address...
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@ -94,6 +95,7 @@ enum ds_type {
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struct ds1307 {
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u8 offset; /* register's offset */
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u8 regs[11];
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enum ds_type type;
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unsigned long flags;
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@ -138,6 +140,7 @@ static const struct i2c_device_id ds1307_id[] = {
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{ "ds1337", ds_1337 },
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{ "ds1338", ds_1338 },
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{ "ds1339", ds_1339 },
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{ "ds1388", ds_1388 },
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{ "ds1340", ds_1340 },
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{ "m41t00", m41t00 },
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{ "rx8025", rx_8025 },
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@ -291,7 +294,7 @@ static int ds1307_get_time(struct device *dev, struct rtc_time *t)
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/* read the RTC date and time registers all at once */
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tmp = ds1307->read_block_data(ds1307->client,
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DS1307_REG_SECS, 7, ds1307->regs);
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ds1307->offset, 7, ds1307->regs);
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if (tmp != 7) {
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dev_err(dev, "%s error %d\n", "read", tmp);
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return -EIO;
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@ -367,7 +370,8 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
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"write", buf[0], buf[1], buf[2], buf[3],
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buf[4], buf[5], buf[6]);
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result = ds1307->write_block_data(ds1307->client, 0, 7, buf);
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result = ds1307->write_block_data(ds1307->client,
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ds1307->offset, 7, buf);
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if (result < 0) {
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dev_err(dev, "%s error %d\n", "write", result);
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return result;
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@ -632,9 +636,12 @@ static int __devinit ds1307_probe(struct i2c_client *client,
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if (!(ds1307 = kzalloc(sizeof(struct ds1307), GFP_KERNEL)))
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return -ENOMEM;
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ds1307->client = client;
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i2c_set_clientdata(client, ds1307);
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ds1307->type = id->driver_data;
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ds1307->client = client;
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ds1307->type = id->driver_data;
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ds1307->offset = 0;
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buf = ds1307->regs;
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if (i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) {
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ds1307->read_block_data = i2c_smbus_read_i2c_block_data;
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@ -751,6 +758,9 @@ static int __devinit ds1307_probe(struct i2c_client *client,
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hour);
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}
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break;
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case ds_1388:
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ds1307->offset = 1; /* Seconds starts at 1 */
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break;
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default:
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break;
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}
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@ -814,6 +824,7 @@ static int __devinit ds1307_probe(struct i2c_client *client,
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case rx_8025:
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case ds_1337:
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case ds_1339:
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case ds_1388:
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break;
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}
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