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Commit c4f99a2b authored by Jean Delvare's avatar Jean Delvare Committed by Jean Delvare
Browse files

hwmon: (lm90) Add support for the W83L771W/G 



I was wondering if that chip ever existed publicly... Apparently yes,
so add support for it.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Tested-by: default avatarAlexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Acked-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
parent 0c01b644

Documentation/hwmon/lm90

+10 −2
Original line number Original line Diff line number Diff line
@@ -95,6 +95,10 @@ Supported chips: 
                           0x4c, 0x4d and 0x4e

                           0x4c, 0x4d and 0x4e

    Datasheet: Publicly available at the Maxim website

    Datasheet: Publicly available at the Maxim website

               http://www.maxim-ic.com/datasheet/index.mvp/id/4199

               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

  * Winbond/Nuvoton W83L771AWG/ASG

    Prefix: 'w83l771'

    Prefix: 'w83l771'

    Addresses scanned: I2C 0x4c

    Addresses scanned: I2C 0x4c
@@ -169,11 +173,15 @@ MAX6695 and MAX6696: 
  * Second critical temperature limit

  * Second critical temperature limit

  * Two remote sensors

  * 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

W83L771AWG/ASG

  * Successor of the W83L771W/G, same features.

  * The AWG and ASG variants only differ in package format.

  * 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

  * Diode ideality factor configuration (remote sensor) at 0xE3

  * Moving average (depending on conversion rate)





All temperature values are given in degrees Celsius. Resolution

All temperature values are given in degrees Celsius. Resolution

is 1.0 degree for the local temperature, 0.125 degree for the remote

is 1.0 degree for the local temperature, 0.125 degree for the remote

drivers/hwmon/Kconfig

+1 −1
Original line number Original line Diff line number Diff line
@@ -615,7 +615,7 @@ config SENSORS_LM90 
	  LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, Maxim

	  LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, Maxim

	  MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,

	  MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,

	  MAX6680, MAX6681, MAX6692, MAX6695, MAX6696, and Winbond/Nuvoton

	  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

	  This driver can also be built as a module.  If so, the module

	  will be called lm90.

	  will be called lm90.

drivers/hwmon/lm90.c

+19 −6
Original line number Original line Diff line number Diff line
@@ -88,8 +88,8 @@ 
 * Addresses to scan

 * Addresses to scan

 * Address is fully defined internally and cannot be changed except for

 * Address is fully defined internally and cannot be changed except for

 * MAX6659, MAX6680 and MAX6681.

 * MAX6659, MAX6680 and MAX6681.

 * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657

 * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657,

 * and MAX6658 have address 0x4c.

 * MAX6658 and W83L771 have address 0x4c.

 * ADM1032-2, ADT7461-2, LM89-1, LM99-1 and MAX6646 have address 0x4d.

 * ADM1032-2, ADT7461-2, LM89-1, LM99-1 and MAX6646 have address 0x4d.

 * MAX6647 has address 0x4e.

 * MAX6647 has address 0x4e.

 * MAX6659 can have address 0x4c, 0x4d or 0x4e.

 * MAX6659 can have address 0x4c, 0x4d or 0x4e.
@@ -1237,12 +1237,25 @@ static int lm90_detect(struct i2c_client *new_client, 
	} else

	} else

	if (address == 0x4C

	if (address == 0x4C

	 && man_id == 0x5C) { /* Winbond/Nuvoton */

	 && man_id == 0x5C) { /* Winbond/Nuvoton */

		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 */

			if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */

		 && (reg_config1 & 0x2A) == 0x00

			 && reg_convrate <= 0x08) {

			 && reg_convrate <= 0x08) {

				name = "w83l771";

				name = "w83l771";

			}

			}

		}

		}

	}





	if (!name) { /* identification failed */

	if (!name) { /* identification failed */

		dev_dbg(&adapter->dev,

		dev_dbg(&adapter->dev,