leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

rtc: ds1307: add Intersil ISL12057 support

Browse Source 
Intersil ISL12057 is a drop-in replacement for DS1337. It can be supported
by the ds1307 driver.

Acked-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Alexandre Belloni
2016-07-13 02:36:41 +02:00
parent 50d6c0ea81
commit 78aaa06d79
2 changed files with 10 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/rtc/Kconfig
View File

@@ -208,14 +208,14 @@ config RTC_DRV_AS3722
will be called rtc-as3722. will be called rtc-as3722.
config RTC_DRV_DS1307 config RTC_DRV_DS1307
tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025" tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025, ISL12057"
help help
If you say yes here you get support for various compatible RTC If you say yes here you get support for various compatible RTC
chips (often with battery backup) connected with I2C. This driver chips (often with battery backup) connected with I2C. This driver
should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00, should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
EPSON RX-8025 and probably other chips. In some cases the RTC EPSON RX-8025, Intersil ISL12057 and probably other chips. In some
must already have been initialized (by manufacturing or a cases the RTC must already have been initialized (by manufacturing or
bootloader). a bootloader).
The first seven registers on these chips hold an RTC, and other The first seven registers on these chips hold an RTC, and other
registers may add features such as NVRAM, a trickle charger for registers may add features such as NVRAM, a trickle charger for

6
drivers/rtc/rtc-ds1307.c
View File

@@ -186,6 +186,7 @@ static const struct i2c_device_id ds1307_id[] = {
{ "mcp7941x", mcp794xx }, { "mcp7941x", mcp794xx },
{ "pt7c4338", ds_1307 }, { "pt7c4338", ds_1307 },
{ "rx8025", rx_8025 }, { "rx8025", rx_8025 },
{ "isl12057", ds_1337 },
{ } { }
}; };
MODULE_DEVICE_TABLE(i2c, ds1307_id); MODULE_DEVICE_TABLE(i2c, ds1307_id);
@@ -1333,6 +1334,11 @@ static int ds1307_probe(struct i2c_client *client,
if (of_property_read_bool(client->dev.of_node, "wakeup-source")) { if (of_property_read_bool(client->dev.of_node, "wakeup-source")) {
ds1307_can_wakeup_device = true; ds1307_can_wakeup_device = true;
} }
/* Intersil ISL12057 DT backward compatibility */
if (of_property_read_bool(client->dev.of_node,
"isil,irq2-can-wakeup-machine")) {
ds1307_can_wakeup_device = true;
}
#endif #endif
switch (ds1307->type) { switch (ds1307->type) {