diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hwmon/lm90.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index e7ef9657ae17..68ee8f78843e 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -85,7 +85,7 @@ * and MAX6658 have address 0x4c. * ADM1032-2, ADT7461-2, LM89-1, LM99-1 and MAX6646 have address 0x4d. * MAX6647 has address 0x4e. - * MAX6659 can have address 0x4c, 0x4d or 0x4e (unsupported). + * MAX6659 can have address 0x4c, 0x4d or 0x4e. * MAX6680 and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, * 0x4c, 0x4d or 0x4e. */ @@ -93,8 +93,8 @@ static const unsigned short normal_i2c[] = { 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END }; -enum chips { lm90, adm1032, lm99, lm86, max6657, adt7461, max6680, max6646, - w83l771 }; +enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680, + max6646, w83l771 }; /* * The LM90 registers @@ -176,7 +176,7 @@ static const struct i2c_device_id lm90_id[] = { { "max6649", max6646 }, { "max6657", max6657 }, { "max6658", max6657 }, - { "max6659", max6657 }, + { "max6659", max6659 }, { "max6680", max6680 }, { "max6681", max6680 }, { "w83l771", w83l771 }, @@ -220,7 +220,7 @@ struct lm90_data { s16 temp11[5]; /* 0: remote input 1: remote low limit 2: remote high limit - 3: remote offset (except max6646 and max6657) + 3: remote offset (except max6646 and max6657/58/59) 4: local input */ u8 temp_hyst; u8 alarms; /* bitvector */ @@ -766,12 +766,20 @@ static int lm90_detect(struct i2c_client *new_client, * register. Likewise, the config1 register seems to lack a * low nibble, so the value will be those of the previous * read, so in our case those of the man_id register. + * MAX6659 has a third set of upper temperature limit registers. + * Those registers also return values on MAX6657 and MAX6658, + * thus the only way to detect MAX6659 is by its address. + * For this reason it will be mis-detected as MAX6657 if its + * address is 0x4C. */ if (chip_id == man_id - && (address == 0x4C || address == 0x4D) + && (address == 0x4C || address == 0x4D || address == 0x4E) && (reg_config1 & 0x1F) == (man_id & 0x0F) && reg_convrate <= 0x09) { - name = "max6657"; + if (address == 0x4C) + name = "max6657"; + else + name = "max6659"; } else /* * The chip_id register of the MAX6680 and MAX6681 holds the @@ -861,14 +869,16 @@ static int lm90_probe(struct i2c_client *new_client, } /* Set chip capabilities */ - if (data->kind != max6657 && data->kind != max6646) + if (data->kind != max6657 && data->kind != max6659 + && data->kind != max6646) data->flags |= LM90_HAVE_OFFSET; - if (data->kind == max6657 || data->kind == max6646) + if (data->kind == max6657 || data->kind == max6659 + || data->kind == max6646) data->flags |= LM90_HAVE_LOCAL_EXT; - if (data->kind != max6657 && data->kind != max6646 - && data->kind != max6680) + if (data->kind != max6657 && data->kind != max6659 + && data->kind != max6646 && data->kind != max6680) data->flags |= LM90_HAVE_REM_LIMIT_EXT; /* Initialize the LM90 chip */ |