Add additional chip ID for an older revision of LTC2978, as well
as two chip IDs for LTC3882. Turns out the LTC3882 does support the
LTC2978_MFR_SPECIAL_ID register, and reading it returns its chip ID,
but the register is undocumented.
Suggested-by: Michael Jones <mike@xxxxxxxxxxxxx>
Tested-by: Michael Jones <mike@xxxxxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/pmbus/ltc2978.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index 491078f499ca..87e3fb67d025 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -31,7 +31,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc3880, ltc3882, ltc3883,
#define LTC2978_MFR_VOUT_PEAK 0xdd
#define LTC2978_MFR_VIN_PEAK 0xde
#define LTC2978_MFR_TEMPERATURE_PEAK 0xdf
-#define LTC2978_MFR_SPECIAL_ID 0xe7 /* Not on LTC3882 */
+#define LTC2978_MFR_SPECIAL_ID 0xe7 /* Undocumented on LTC3882 */
/* LTC2974, LTC2975, LCT2977, and LTC2978 */
#define LTC2978_MFR_VOUT_MIN 0xfb
@@ -61,8 +61,11 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc3880, ltc3882, ltc3883,
#define LTC2974_ID 0x0210
#define LTC2975_ID 0x0220
#define LTC2977_ID 0x0130
-#define LTC2978_ID 0x0120
+#define LTC2978_ID_REV1 0x0110 /* Early revision */
+#define LTC2978_ID_REV2 0x0120
#define LTC3880_ID 0x4000
+#define LTC3882_ID 0x4200
+#define LTC3882_ID_D1 0x4240 /* Dash 1 */
#define LTC3883_ID 0x4300
#define LTC3887_ID 0x4700
#define LTM4676_ID_REV1 0x4400
@@ -466,10 +469,12 @@ static int ltc2978_get_id(struct i2c_client *client)
return ltc2975;
else if (chip_id == LTC2977_ID)
return ltc2977;
- else if (chip_id == LTC2978_ID)
+ else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2)
return ltc2978;
else if (chip_id == LTC3880_ID)
return ltc3880;
+ else if (chip_id == LTC3882_ID || chip_id == LTC3882_ID_D1)
+ return ltc3882;
else if (chip_id == LTC3883_ID)
return ltc3883;
else if (chip_id == LTC3887_ID)
--
2.1.4
_______________________________________________
lm-sensors mailing list
lm-sensors@xxxxxxxxxxxxxx
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
