diff options
| -rw-r--r-- | Documentation/hwmon/lm90 | 12 | ||||
| -rw-r--r-- | drivers/hwmon/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/hwmon/lm90.c | 25 |
3 files changed, 30 insertions, 9 deletions
diff --git a/Documentation/hwmon/lm90 b/Documentation/hwmon/lm90 index 6e963b696d85..fa475c0a48a3 100644 --- a/Documentation/hwmon/lm90 +++ b/Documentation/hwmon/lm90 @@ -95,6 +95,10 @@ Supported chips: 0x4c, 0x4d and 0x4e Datasheet: Publicly available at the Maxim website http://www.maxim-ic.com/datasheet/index.mvp/id/4199 + * Winbond/Nuvoton W83L771W/G + Prefix: 'w83l771' + Addresses scanned: I2C 0x4c + Datasheet: No longer available * Winbond/Nuvoton W83L771AWG/ASG Prefix: 'w83l771' Addresses scanned: I2C 0x4c @@ -169,11 +173,15 @@ MAX6695 and MAX6696: * Second critical temperature limit * Two remote sensors +W83L771W/G + * The G variant is lead-free, otherwise similar to the W. + * Filter and alert configuration register at 0xBF + * Moving average (depending on conversion rate) + W83L771AWG/ASG + * Successor of the W83L771W/G, same features. * The AWG and ASG variants only differ in package format. - * Filter and alert configuration register at 0xBF * Diode ideality factor configuration (remote sensor) at 0xE3 - * Moving average (depending on conversion rate) All temperature values are given in degrees Celsius. Resolution is 1.0 degree for the local temperature, 0.125 degree for the remote diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 9a3742b67c8c..3e88140b9d77 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -615,7 +615,7 @@ config SENSORS_LM90 LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, Maxim MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659, MAX6680, MAX6681, MAX6692, MAX6695, MAX6696, and Winbond/Nuvoton - W83L771AWG/ASG sensor chips. + W83L771W/G/AWG/ASG sensor chips. This driver can also be built as a module. If so, the module will be called lm90. diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index f9e76c757de8..812781c655a7 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -88,8 +88,8 @@ * Addresses to scan * Address is fully defined internally and cannot be changed except for * MAX6659, MAX6680 and MAX6681. - * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657 - * and MAX6658 have address 0x4c. + * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657, + * MAX6658 and W83L771 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. @@ -1237,10 +1237,23 @@ static int lm90_detect(struct i2c_client *new_client, } else if (address == 0x4C && man_id == 0x5C) { /* Winbond/Nuvoton */ - if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */ - && (reg_config1 & 0x2A) == 0x00 - && reg_convrate <= 0x08) { - name = "w83l771"; + int reg_config2; + + reg_config2 = i2c_smbus_read_byte_data(new_client, + LM90_REG_R_CONFIG2); + if (reg_config2 < 0) + return -ENODEV; + + if ((reg_config1 & 0x2A) == 0x00 + && (reg_config2 & 0xF8) == 0x00) { + if (chip_id == 0x01 /* W83L771W/G */ + && reg_convrate <= 0x09) { + name = "w83l771"; + } else + if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */ + && reg_convrate <= 0x08) { + name = "w83l771"; + } } } |