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>
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 2c4a653..52e2427 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -31,6 +31,7 @@
ds_1338,
ds_1339,
ds_1340,
+ ds_1388,
m41t00,
rx_8025,
// rs5c372 too? different address...
@@ -94,6 +95,7 @@
struct ds1307 {
+ u8 offset; /* register's offset */
u8 regs[11];
enum ds_type type;
unsigned long flags;
@@ -138,6 +140,7 @@
{ "ds1337", ds_1337 },
{ "ds1338", ds_1338 },
{ "ds1339", ds_1339 },
+ { "ds1388", ds_1388 },
{ "ds1340", ds_1340 },
{ "m41t00", m41t00 },
{ "rx8025", rx_8025 },
@@ -291,7 +294,7 @@
/* read the RTC date and time registers all at once */
tmp = ds1307->read_block_data(ds1307->client,
- DS1307_REG_SECS, 7, ds1307->regs);
+ ds1307->offset, 7, ds1307->regs);
if (tmp != 7) {
dev_err(dev, "%s error %d\n", "read", tmp);
return -EIO;
@@ -367,7 +370,8 @@
"write", buf[0], buf[1], buf[2], buf[3],
buf[4], buf[5], buf[6]);
- result = ds1307->write_block_data(ds1307->client, 0, 7, buf);
+ result = ds1307->write_block_data(ds1307->client,
+ ds1307->offset, 7, buf);
if (result < 0) {
dev_err(dev, "%s error %d\n", "write", result);
return result;
@@ -632,9 +636,12 @@
if (!(ds1307 = kzalloc(sizeof(struct ds1307), GFP_KERNEL)))
return -ENOMEM;
- ds1307->client = client;
i2c_set_clientdata(client, ds1307);
- ds1307->type = id->driver_data;
+
+ ds1307->client = client;
+ ds1307->type = id->driver_data;
+ ds1307->offset = 0;
+
buf = ds1307->regs;
if (i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) {
ds1307->read_block_data = i2c_smbus_read_i2c_block_data;
@@ -751,6 +758,9 @@
hour);
}
break;
+ case ds_1388:
+ ds1307->offset = 1; /* Seconds starts at 1 */
+ break;
default:
break;
}
@@ -814,6 +824,7 @@
case rx_8025:
case ds_1337:
case ds_1339:
+ case ds_1388:
break;
}