===
Changes from v1:
- added information on why support was limited to date/time only to commit
message, as suggested by Linus Walleij
@@ -227,14 +227,14 @@ config RTC_DRV_AS3722
will be called rtc-as3722.
config RTC_DRV_DS1307
- tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025, ISL12057"
+ tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
help
If you say yes here you get support for various compatible RTC
chips (often with battery backup) connected with I2C. This driver
- should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
- EPSON RX-8025, Intersil ISL12057 and probably other chips. In some
- cases the RTC must already have been initialized (by manufacturing or
- a bootloader).
+ should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341,
+ ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
+ In some cases the RTC must already have been initialized (by
+ manufacturing or a bootloader).
The first seven registers on these chips hold an RTC, and other
registers may add features such as NVRAM, a trickle charger for
@@ -39,6 +39,7 @@ enum ds_type {
ds_1338,
ds_1339,
ds_1340,
+ ds_1341,
ds_1388,
ds_3231,
m41t0,
@@ -179,6 +180,10 @@ static struct chip_desc chips[last_ds_type] = {
.century_bit = DS1340_BIT_CENTURY,
.trickle_charger_reg = 0x08,
},
+ [ds_1341] = {
+ .century_reg = DS1307_REG_MONTH,
+ .century_bit = DS1337_BIT_CENTURY,
+ },
[ds_1388] = {
.trickle_charger_reg = 0x0a,
},
@@ -209,6 +214,7 @@ static const struct i2c_device_id ds1307_id[] = {
{ "ds1339", ds_1339 },
{ "ds1388", ds_1388 },
{ "ds1340", ds_1340 },
+ { "ds1341", ds_1341 },
{ "ds3231", ds_3231 },
{ "m41t0", m41t0 },
{ "m41t00", m41t00 },
@@ -253,6 +259,10 @@ static const struct of_device_id ds1307_of_match[] = {
.data = (void *)ds_1340
},
{
+ .compatible = "dallas,ds1341",
+ .data = (void *)ds_1341
+ },
+ {
.compatible = "maxim,ds3231",
.data = (void *)ds_3231
},
@@ -298,6 +308,7 @@ static const struct acpi_device_id ds1307_acpi_ids[] = {
{ .id = "DS1339", .driver_data = ds_1339 },
{ .id = "DS1388", .driver_data = ds_1388 },
{ .id = "DS1340", .driver_data = ds_1340 },
+ { .id = "DS1341", .driver_data = ds_1341 },
{ .id = "DS3231", .driver_data = ds_3231 },
{ .id = "M41T0", .driver_data = m41t0 },
{ .id = "M41T00", .driver_data = m41t00 },
@@ -1323,6 +1334,7 @@ static int ds1307_probe(struct i2c_client *client,
static const int bbsqi_bitpos[] = {
[ds_1337] = 0,
[ds_1339] = DS1339_BIT_BBSQI,
+ [ds_1341] = 0,
[ds_3231] = DS3231_BIT_BBSQW,
};
const struct rtc_class_ops *rtc_ops = &ds13xx_rtc_ops;
@@ -1401,6 +1413,7 @@ static int ds1307_probe(struct i2c_client *client,
switch (ds1307->type) {
case ds_1337:
case ds_1339:
+ case ds_1341:
case ds_3231:
/* get registers that the "rtc" read below won't read... */
err = regmap_bulk_read(ds1307->regmap, DS1337_REG_CONTROL,