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hwmon: (pmbus/ltc2978): Add support for LTC2978A

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Detect LTC2978A chip ID. Treat it as LC2978.

Signed-off-by: Guenter Roeck <[email protected]>
This commit is contained in:
Guenter Roeck 2013-09-23 11:23:37 -07:00
commit 3f08d7f49f
2 changed files with 5 additions and 2 deletions
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4
drivers/hwmon/pmbus/ltc2978.c
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@ -57,6 +57,7 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 };
#define LTC2977_ID 0x0130
#define LTC2978_ID_REV1 0x0121
#define LTC2978_ID_REV2 0x0122
#define LTC2978A_ID 0x0124
#define LTC3880_ID 0x4000
#define LTC3880_ID_MASK 0xff00
#define LTC3883_ID 0x4300
@ -397,7 +398,8 @@ static int ltc2978_probe(struct i2c_client *client,
data->id = ltc2974;
} else if (chip_id == LTC2977_ID) {
data->id = ltc2977;
} else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2) {
} else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2 ||
chip_id == LTC2978A_ID) {
data->id = ltc2978;
} else if ((chip_id & LTC3880_ID_MASK) == LTC3880_ID) {
data->id = ltc3880;