diff options
Diffstat (limited to 'drivers/rtc/rtc-ds1307.c')
| -rw-r--r-- | drivers/rtc/rtc-ds1307.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index e9ec4160d7f6..4b2b4627daeb 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -44,6 +44,7 @@ enum ds_type { ds_3231, m41t0, m41t00, + m41t11, mcp794xx, rx_8025, rx_8130, @@ -227,6 +228,11 @@ static const struct chip_desc chips[last_ds_type] = { .irq_handler = rx8130_irq, .rtc_ops = &rx8130_rtc_ops, }, + [m41t11] = { + /* this is battery backed SRAM */ + .nvram_offset = 8, + .nvram_size = 56, + }, [mcp794xx] = { .alarm = 1, /* this is battery backed SRAM */ @@ -249,6 +255,7 @@ static const struct i2c_device_id ds1307_id[] = { { "ds3231", ds_3231 }, { "m41t0", m41t0 }, { "m41t00", m41t00 }, + { "m41t11", m41t11 }, { "mcp7940x", mcp794xx }, { "mcp7941x", mcp794xx }, { "pt7c4338", ds_1307 }, @@ -299,13 +306,17 @@ static const struct of_device_id ds1307_of_match[] = { }, { .compatible = "st,m41t0", - .data = (void *)m41t00 + .data = (void *)m41t0 }, { .compatible = "st,m41t00", .data = (void *)m41t00 }, { + .compatible = "st,m41t11", + .data = (void *)m41t11 + }, + { .compatible = "microchip,mcp7940x", .data = (void *)mcp794xx }, @@ -347,6 +358,7 @@ static const struct acpi_device_id ds1307_acpi_ids[] = { { .id = "DS3231", .driver_data = ds_3231 }, { .id = "M41T0", .driver_data = m41t0 }, { .id = "M41T00", .driver_data = m41t00 }, + { .id = "M41T11", .driver_data = m41t11 }, { .id = "MCP7940X", .driver_data = mcp794xx }, { .id = "MCP7941X", .driver_data = mcp794xx }, { .id = "PT7C4338", .driver_data = ds_1307 }, @@ -1030,7 +1042,7 @@ static u8 ds1307_trickle_init(struct ds1307 *ds1307, /*----------------------------------------------------------------------*/ -#ifdef CONFIG_RTC_DRV_DS1307_HWMON +#if IS_REACHABLE(CONFIG_HWMON) /* * Temperature sensor support for ds3231 devices. @@ -1576,6 +1588,7 @@ read_rtc: case ds_1307: case m41t0: case m41t00: + case m41t11: /* clock halted? turn it on, so clock can tick. */ if (tmp & DS1307_BIT_CH) { regmap_write(ds1307->regmap, DS1307_REG_SECS, 0); @@ -1641,6 +1654,7 @@ read_rtc: case ds_1340: case m41t0: case m41t00: + case m41t11: /* * NOTE: ignores century bits; fix before deploying * systems that will run through year 2100. |