Commit 2c9d5b5e authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: Remove ads1015 driver 

A driver for ADS1015 with more functionality is available in the iio
subsystem.

Remove the hwmon driver as duplicate. If the chip is used for hardware
monitoring, the iio->hwmon bridge should be used.

Cc: Dirk Eibach <eibach@gdsys.de>
Link: https://lore.kernel.org/r/1562004758-13025-1-git-send-email-linux@roeck-us.net


Acked-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent e027a2de

Documentation/hwmon/ads1015.rst

deleted100644 → 0
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Kernel driver ads1015

=====================



Supported chips:



  * Texas Instruments ADS1015



    Prefix: 'ads1015'



    Datasheet: Publicly available at the Texas Instruments website:



	       http://focus.ti.com/lit/ds/symlink/ads1015.pdf



  * Texas Instruments ADS1115



    Prefix: 'ads1115'



    Datasheet: Publicly available at the Texas Instruments website:



	       http://focus.ti.com/lit/ds/symlink/ads1115.pdf



Authors:

	Dirk Eibach, Guntermann & Drunck GmbH <eibach@gdsys.de>



Description

-----------



This driver implements support for the Texas Instruments ADS1015/ADS1115.



This device is a 12/16-bit A-D converter with 4 inputs.



The inputs can be used single ended or in certain differential combinations.



The inputs can be made available by 8 sysfs input files in0_input - in7_input:



  - in0: Voltage over AIN0 and AIN1.

  - in1: Voltage over AIN0 and AIN3.

  - in2: Voltage over AIN1 and AIN3.

  - in3: Voltage over AIN2 and AIN3.

  - in4: Voltage over AIN0 and GND.

  - in5: Voltage over AIN1 and GND.

  - in6: Voltage over AIN2 and GND.

  - in7: Voltage over AIN3 and GND.



Which inputs are available can be configured using platform data or devicetree.



By default all inputs are exported.



Platform Data

-------------



In linux/platform_data/ads1015.h platform data is defined, channel_data contains

configuration data for the used input combinations:



- pga is the programmable gain amplifier (values are full scale)



    - 0: +/- 6.144 V

    - 1: +/- 4.096 V

    - 2: +/- 2.048 V

    - 3: +/- 1.024 V

    - 4: +/- 0.512 V

    - 5: +/- 0.256 V



- data_rate in samples per second



    - 0: 128

    - 1: 250

    - 2: 490

    - 3: 920

    - 4: 1600

    - 5: 2400

    - 6: 3300



Example::



  struct ads1015_platform_data data = {

	.channel_data = {

		[2] = { .enabled = true, .pga = 1, .data_rate = 0 },

		[4] = { .enabled = true, .pga = 4, .data_rate = 5 },

	}

  };



In this case only in2_input (FS +/- 4.096 V, 128 SPS) and in4_input

(FS +/- 0.512 V, 2400 SPS) would be created.



Devicetree

----------



Configuration is also possible via devicetree:

Documentation/devicetree/bindings/hwmon/ads1015.txt

Documentation/hwmon/index.rst

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@@ -30,7 +30,6 @@ Hardware Monitoring Kernel Drivers 
   adm1031

   adm1275

   adm9240

   ads1015

   ads7828

   adt7410

   adt7411

MAINTAINERS

+0 −8
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@@ -517,14 +517,6 @@ W: http://ez.analog.com/community/linux-device-drivers 
S:	Supported

F:	drivers/video/backlight/adp8860_bl.c



ADS1015 HARDWARE MONITOR DRIVER

M:	Dirk Eibach <eibach@gdsys.de>

L:	linux-hwmon@vger.kernel.org

S:	Maintained

F:	Documentation/hwmon/ads1015.rst

F:	drivers/hwmon/ads1015.c

F:	include/linux/platform_data/ads1015.h



ADT746X FAN DRIVER

M:	Colin Leroy <colin@colino.net>

S:	Maintained

drivers/hwmon/Kconfig

+0 −10
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@@ -1570,16 +1570,6 @@ config SENSORS_ADC128D818 
	  This driver can also be built as a module. If so, the module

	  will be called adc128d818.



config SENSORS_ADS1015

	tristate "Texas Instruments ADS1015"

	depends on I2C

	help

	  If you say yes here you get support for Texas Instruments

	  ADS1015/ADS1115 12/16-bit 4-input ADC device.



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

	  will be called ads1015.



config SENSORS_ADS7828

	tristate "Texas Instruments ADS7828 and compatibles"

	depends on I2C