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hwmon: (lm90) Add table with supported Analog/ONSEMI devices

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Add table with device names and known register values for supported
devices from Analog / ON Semiconductor.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2021-12-16 20:05:32 -08:00
parent 9a19866370
commit 018b828770
1 changed files with 36 additions and 0 deletions
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36
drivers/hwmon/lm90.c
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@ -1830,6 +1830,42 @@ static const char *lm90_detect_analog(struct i2c_client *client, bool common_add
if (status < 0 || config2 < 0 || man_id2 < 0 || chip_id2 < 0)
return NULL;
/*
* The following chips should be detected by this function. Known
* register values are listed. Registers 0x3d .. 0x3e are undocumented
* for most of the chips, yet appear to return a well defined value.
* Register 0xff is undocumented for some of the chips. Register 0x3f
* is undocumented for all chips, but also returns a well defined value.
* Values are as reported from real chips unless mentioned otherwise.
* The code below checks values for registers 0x3d, 0x3e, and 0xff,
* but not for register 0x3f.
*
* Chip Register
* 3d 3e 3f fe ff Notes
* ----------------------------------------------------------
* adm1020 00 00 00 41 39
* adm1021 00 00 00 41 03
* adm1021a 00 00 00 41 3c
* adm1023 00 00 00 41 3c same as adm1021a
* adm1032 00 00 00 41 42
*
* adt7421 21 41 04 41 04
* adt7461 00 00 00 41 51
* adt7461a 61 41 05 41 57
* adt7481 81 41 02 41 62
* adt7482 - - - 41 65 datasheet
* 82 41 05 41 75 real chip
* adt7483 83 41 04 41 94
*
* nct72 61 41 07 41 55
* nct210 00 00 00 41 3f
* nct214 61 41 08 41 5a
* nct1008 - - - 41 57 datasheet rev. 3
* 61 41 06 41 54 real chip
*
* nvt210 - - - 41 - datasheet
* nvt211 - - - 41 - datasheet
*/
switch (chip_id) {
case 0x00 ... 0x03: /* ADM1021 */
case 0x05 ... 0x0f: