diff options
| -rw-r--r-- | Documentation/hwmon/lm90.rst | 23 | ||||
| -rw-r--r-- | drivers/hwmon/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/hwmon/lm90.c | 47 |
3 files changed, 66 insertions, 8 deletions
diff --git a/Documentation/hwmon/lm90.rst b/Documentation/hwmon/lm90.rst index e2ee0f2e1b7b..075be136210b 100644 --- a/Documentation/hwmon/lm90.rst +++ b/Documentation/hwmon/lm90.rst @@ -51,6 +51,22 @@ Supported chips: http://www.national.com/mpf/LM/LM86.html + * Analog Devices ADM1021 + + Prefix: 'adm1021' + + Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e + + Datasheet: Publicly available at the Analog Devices website + + * Analog Devices ADM1021A/ADM1023 + + Prefix: 'adm1023' + + Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e + + Datasheet: Publicly available at the Analog Devices website + * Analog Devices ADM1032 Prefix: 'adm1032' @@ -369,10 +385,15 @@ features: LM84: * 8 bit sensor resolution -MAX1617: +ADM1021, MAX1617: * 8 bit sensor resolution * Low temperature limits +ADM1021A, ADM1023: + * Temperature offset register for remote temperature sensor + * 11 bit resolution for remote temperature sensor + * Low temperature limits + LM90: * 11 bit resolution for remote temperature sensor * Temperature offset register for remote temperature sensor diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 1dd812cf15bb..50fa255b1e3c 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1359,8 +1359,8 @@ config SENSORS_LM90 depends on I2C help If you say yes here you get support for National Semiconductor LM84, - LM90, LM86, LM89 and LM99, Analog Devices ADM1032, ADT7461, ADT7461A, - ADT7481, ADT7482, and ADT7483A, + LM90, LM86, LM89 and LM99, Analog Devices ADM2021, ADM1021A, ADM1023, + ADM1032, ADT7461, ADT7461A, ADT7481, ADT7482, and ADT7483A, Maxim MAX1617, MAX6642, MAX6646, MAX6647, MAX6648, MAX6649, MAX6654, MAX6657, MAX6658, MAX6659, MAX6680, MAX6681, MAX6692, MAX6695, MAX6696, diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index 2e85dbc4def7..2c4a66b93fde 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -122,7 +122,8 @@ static const unsigned short normal_i2c[] = { 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, I2C_CLIENT_END }; -enum chips { adm1032, adt7461, adt7461a, adt7481, g781, lm84, lm86, lm90, lm99, +enum chips { adm1023, adm1032, adt7461, adt7461a, adt7481, + g781, lm84, lm86, lm90, lm99, max1617, max6642, max6646, max6648, max6654, max6657, max6659, max6680, max6696, sa56004, tmp451, tmp461, w83l771, }; @@ -223,6 +224,8 @@ enum chips { adm1032, adt7461, adt7461a, adt7481, g781, lm84, lm86, lm90, lm99, */ static const struct i2c_device_id lm90_id[] = { + { "adm1021", max1617 }, + { "adm1023", adm1023 }, { "adm1032", adm1032 }, { "adt7461", adt7461 }, { "adt7461a", adt7461a }, @@ -375,6 +378,14 @@ struct lm90_params { }; static const struct lm90_params lm90_params[] = { + [adm1023] = { + .flags = LM90_HAVE_ALARMS | LM90_HAVE_OFFSET | LM90_HAVE_BROKEN_ALERT + | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_LOW | LM90_HAVE_CONVRATE + | LM90_HAVE_REMOTE_EXT, + .alert_alarms = 0x7c, + .resolution = 8, + .max_convrate = 7, + }, [adm1032] = { .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_CRIT @@ -1742,19 +1753,43 @@ static const char *lm90_detect_national(struct i2c_client *client, int chip_id, return name; } -static const char *lm90_detect_analog(struct i2c_client *client, int chip_id, - int config1, int convrate) +static const char *lm90_detect_analog(struct i2c_client *client, bool common_address, + int chip_id, int config1, int convrate) { + int status = i2c_smbus_read_byte_data(client, LM90_REG_STATUS); int config2 = i2c_smbus_read_byte_data(client, ADT7481_REG_CONFIG2); int man_id2 = i2c_smbus_read_byte_data(client, ADT7481_REG_MAN_ID); int chip_id2 = i2c_smbus_read_byte_data(client, ADT7481_REG_CHIP_ID); int address = client->addr; const char *name = NULL; - if (config2 < 0 || man_id2 < 0 || chip_id2 < 0) + if (status < 0 || config2 < 0 || man_id2 < 0 || chip_id2 < 0) return NULL; switch (chip_id) { + case 0x00 ... 0x0f: /* ADM1021, undocumented */ + if (man_id2 == 0x00 && chip_id2 == 0x00 && common_address && + !(status & 0x03) && !(config1 & 0x3f) && !(convrate & 0xf8)) + name = "adm1021"; + break; + case 0x30 ... 0x3f: /* ADM1021A, ADM1023 */ + /* + * ADM1021A and compatible chips will be mis-detected as + * ADM1023. Chips labeled 'ADM1021A' and 'ADM1023' were both + * found to have a Chip ID of 0x3c. + * ADM1021A does not officially support low byte registers + * (0x12 .. 0x14), but a chip labeled ADM1021A does support it. + * Official support for the temperature offset high byte + * register (0x11) was added to revision F of the ADM1021A + * datasheet. + * It is currently unknown if there is a means to distinguish + * ADM1021A from ADM1023, and/or if revisions of ADM1021A exist + * which differ in functionality from ADM1023. + */ + if (man_id2 == 0x00 && chip_id2 == 0x00 && common_address && + !(status & 0x03) && !(config1 & 0x3f) && !(convrate & 0xf8)) + name = "adm1023"; + break; case 0x40 ... 0x4f: /* ADM1032 */ if (man_id2 == 0x00 && chip_id2 == 0x00 && (address == 0x4c || address == 0x4d) && !(config1 & 0x3f) && @@ -1795,6 +1830,7 @@ static const char *lm90_detect_analog(struct i2c_client *client, int chip_id, break; case 0x94: /* ADT7483 */ if (man_id2 == 0x41 && chip_id2 == 0x83 && + common_address && ((address >= 0x18 && address <= 0x1a) || (address >= 0x29 && address <= 0x2b) || (address >= 0x4c && address <= 0x4e)) && @@ -2175,7 +2211,8 @@ static int lm90_detect(struct i2c_client *client, struct i2c_board_info *info) name = lm90_detect_national(client, chip_id, config1, convrate); break; case 0x41: /* Analog Devices */ - name = lm90_detect_analog(client, chip_id, config1, convrate); + name = lm90_detect_analog(client, common_address, chip_id, config1, + convrate); break; case 0x47: /* GMT */ name = lm90_detect_gmt(client, chip_id, config1, convrate); |