diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2021-12-10 19:35:20 -0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2022-07-13 08:38:18 -0700 |
| commit | 9888775be8c07e134c1c5b281ee0a4e01773aed1 (patch) | |
| tree | 54792d7cd8b674a1a2d304c0a2657ccf5e18c298 /drivers/hwmon/lm90.c | |
| parent | a9f3d3a80a405249e18f9bf85271e4cee5c4160f (diff) | |
hwmon: (lm90) Strengthen chip detection for ADM1032, ADT7461(A), and NCT1008
ADT7461A and NCT1008 support the undocumented manufacturer and chip ID
registers at 0x3e and 0x3f, and return 0x61 as chip ID. ADM1032 and
ADT7461 do not support those registers but return 0 when reading them.
Use this information to improve the accuracy of the chip detection code.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/lm90.c')
| -rw-r--r-- | drivers/hwmon/lm90.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index a915d0356d57..66d706d665bd 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -1605,22 +1605,26 @@ static const char *lm90_detect_analog(struct i2c_client *client, int chip_id, switch (chip_id) { case 0x40 ... 0x4f: /* ADM1032 */ - if ((address == 0x4c || address == 0x4d) && !(config1 & 0x3f) && + if (man_id2 == 0x00 && chip_id2 == 0x00 && + (address == 0x4c || address == 0x4d) && !(config1 & 0x3f) && convrate <= 0x0a) name = "adm1032"; break; case 0x51: /* ADT7461 */ - if ((address == 0x4c || address == 0x4d) && !(config1 & 0x1b) && + if (man_id2 == 0x00 && chip_id2 == 0x00 && + (address == 0x4c || address == 0x4d) && !(config1 & 0x1b) && convrate <= 0x0a) name = "adt7461"; break; case 0x54: /* NCT1008 */ - if ((address == 0x4c || address == 0x4d) && !(config1 & 0x1b) && + if (man_id2 == 0x41 && chip_id2 == 0x61 && + (address == 0x4c || address == 0x4d) && !(config1 & 0x1b) && convrate <= 0x0a) name = "nct1008"; break; case 0x57: /* ADT7461A, NCT1008 (datasheet rev. 3) */ - if ((address == 0x4c || address == 0x4d) && !(config1 & 0x1b) && + if (man_id2 == 0x41 && chip_id2 == 0x61 && + (address == 0x4c || address == 0x4d) && !(config1 & 0x1b) && convrate <= 0x0a) name = "adt7461a"; break; |