diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2021-12-15 19:58:01 -0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2022-07-13 08:38:19 -0700 |
| commit | 41e6d7215d79f98758def6ef60161fd891bbac0d (patch) | |
| tree | 9033a8b7354b3d3a650fa2197930e2c935d1efcb /drivers/hwmon/lm90.c | |
| parent | d8521f82dfb67442777a3f7ec2fdc1237384195e (diff) | |
| download | linux-41e6d7215d79f98758def6ef60161fd891bbac0d.tar.bz2 | |
hwmon: (lm90) Add support for ADT7421
ADT7421 is similar to ADT7461A but supports configurable Beta Compensation.
Packet Error Checking (PEC) is supported but undocumented.
A devicetree node is not added for the added chip since it is quite
unlikely that such an old chip will ever be used in a devicetree based
system. It can be added later if needed.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/lm90.c')
| -rw-r--r-- | drivers/hwmon/lm90.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index a553c611624b..c7bf288c8401 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -231,6 +231,7 @@ static const struct i2c_device_id lm90_id[] = { { "adm1021", max1617 }, { "adm1023", adm1023 }, { "adm1032", adm1032 }, + { "adt7421", adt7461a }, { "adt7461", adt7461 }, { "adt7461a", adt7461a }, { "adt7481", adt7481 }, @@ -1818,11 +1819,18 @@ static const char *lm90_detect_analog(struct i2c_client *client, bool common_add return NULL; switch (chip_id) { - case 0x00 ... 0x0f: /* ADM1021, undocumented */ + case 0x00 ... 0x03: /* ADM1021 */ + case 0x05 ... 0x0f: if (man_id2 == 0x00 && chip_id2 == 0x00 && common_address && !(status & 0x03) && !(config1 & 0x3f) && !(convrate & 0xf8)) name = "adm1021"; break; + case 0x04: /* ADT7421 (undocumented) */ + if (man_id2 == 0x41 && chip_id2 == 0x21 && + (address == 0x4c || address == 0x4d) && + (config1 & 0x0b) == 0x08 && convrate <= 0x0a) + name = "adt7421"; + break; case 0x30 ... 0x3e: /* ADM1021A, ADM1023 */ /* * ADM1021A and compatible chips will be mis-detected as |