hwmon: Remove smm665 driver

SMM665 and related chips are power controller/sequencer chips from
Summit Microelectronics. The company was acquired by Qualcomm in 2012,
and support for the chip series stopped.

The chips are long since gone from active use, making the driver
unsupportable and just consuming space and compile time. Remove it.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/hwmon/index.rst

@@ -195,7 +195,6 @@ Hardware Monitoring Kernel Drivers
    shtc1
    sis5595
    sl28cpld
-   smm665
    smpro-hwmon
    smsc47b397
    smsc47m192

Documentation/hwmon/smm665.rst

-Kernel driver smm665
-====================
-
-Supported chips:
-
-  * Summit Microelectronics SMM465
-
-    Prefix: 'smm465'
-
-    Addresses scanned: -
-
-    Datasheet:
-
-      http://www.summitmicro.com/prod_select/summary/SMM465/SMM465DS.pdf
-
-  * Summit Microelectronics SMM665, SMM665B
-
-    Prefix: 'smm665'
-
-    Addresses scanned: -
-
-    Datasheet:
-
-      http://www.summitmicro.com/prod_select/summary/SMM665/SMM665B_2089_20.pdf
-
-  * Summit Microelectronics SMM665C
-
-    Prefix: 'smm665c'
-
-    Addresses scanned: -
-
-    Datasheet:
-
-      http://www.summitmicro.com/prod_select/summary/SMM665C/SMM665C_2125.pdf
-
-  * Summit Microelectronics SMM764
-
-    Prefix: 'smm764'
-
-    Addresses scanned: -
-
-    Datasheet:
-
-      http://www.summitmicro.com/prod_select/summary/SMM764/SMM764_2098.pdf
-
-  * Summit Microelectronics SMM766, SMM766B
-
-    Prefix: 'smm766'
-
-    Addresses scanned: -
-
-    Datasheets:
-
-      http://www.summitmicro.com/prod_select/summary/SMM766/SMM766_2086.pdf
-
-      http://www.summitmicro.com/prod_select/summary/SMM766B/SMM766B_2122.pdf
-
-Author: Guenter Roeck <linux@roeck-us.net>
-
-
-Module Parameters
------------------
-
-* vref: int
-    Default: 1250 (mV)
-
-    Reference voltage on VREF_ADC pin in mV. It should not be necessary to set
-    this parameter unless a non-default reference voltage is used.
-
-
-Description
------------
-
-[From datasheet] The SMM665 is an Active DC Output power supply Controller
-that monitors, margins and cascade sequences power. The part monitors six
-power supply channels as well as VDD, 12V input, two general-purpose analog
-inputs and an internal temperature sensor using a 10-bit ADC.
-
-Each monitored channel has its own high and low limits, plus a critical
-limit.
-
-Support for SMM465, SMM764, and SMM766 has been implemented but is untested.
-
-
-Usage Notes
------------
-
-This driver does not probe for devices, since there is no register which
-can be safely used to identify the chip. You will have to instantiate
-the devices explicitly. When instantiating the device, you have to specify
-its configuration register address.
-
-Example: the following will load the driver for an SMM665 at address 0x57
-on I2C bus #1::
-
-	$ modprobe smm665
-	$ echo smm665 0x57 > /sys/bus/i2c/devices/i2c-1/new_device
-
-
-Sysfs entries
--------------
-
-This driver uses the values in the datasheet to convert ADC register values
-into the values specified in the sysfs-interface document. All attributes are
-read only.
-
-Min, max, lcrit, and crit values are used by the chip to trigger external signals
-and/or other activity. Triggered signals can include HEALTHY, RST, Power Off,
-or Fault depending on the chip configuration. The driver reports values as lcrit
-or crit if exceeding the limits triggers RST, Power Off, or Fault, and as min or
-max otherwise. For details please see the SMM665 datasheet.
-
-For SMM465 and SMM764, values for Channel E and F are reported but undefined.
-
-======================= =======================================================
-in1_input		12V input voltage (mV)
-in2_input		3.3V (VDD) input voltage (mV)
-in3_input		Channel A voltage (mV)
-in4_input		Channel B voltage (mV)
-in5_input		Channel C voltage (mV)
-in6_input		Channel D voltage (mV)
-in7_input		Channel E voltage (mV)
-in8_input		Channel F voltage (mV)
-in9_input		AIN1 voltage (mV)
-in10_input		AIN2 voltage (mV)
-
-in1_min			12v input minimum voltage (mV)
-in2_min			3.3V (VDD) input minimum voltage (mV)
-in3_min			Channel A minimum voltage (mV)
-in4_min			Channel B minimum voltage (mV)
-in5_min			Channel C minimum voltage (mV)
-in6_min			Channel D minimum voltage (mV)
-in7_min			Channel E minimum voltage (mV)
-in8_min			Channel F minimum voltage (mV)
-in9_min			AIN1 minimum voltage (mV)
-in10_min		AIN2 minimum voltage (mV)
-
-in1_max			12v input maximum voltage (mV)
-in2_max			3.3V (VDD) input maximum voltage (mV)
-in3_max			Channel A maximum voltage (mV)
-in4_max			Channel B maximum voltage (mV)
-in5_max			Channel C maximum voltage (mV)
-in6_max			Channel D maximum voltage (mV)
-in7_max			Channel E maximum voltage (mV)
-in8_max			Channel F maximum voltage (mV)
-in9_max			AIN1 maximum voltage (mV)
-in10_max		AIN2 maximum voltage (mV)
-
-in1_lcrit		12v input critical minimum voltage (mV)
-in2_lcrit		3.3V (VDD) input critical minimum voltage (mV)
-in3_lcrit		Channel A critical minimum voltage (mV)
-in4_lcrit		Channel B critical minimum voltage (mV)
-in5_lcrit		Channel C critical minimum voltage (mV)
-in6_lcrit		Channel D critical minimum voltage (mV)
-in7_lcrit		Channel E critical minimum voltage (mV)
-in8_lcrit		Channel F critical minimum voltage (mV)
-in9_lcrit		AIN1 critical minimum voltage (mV)
-in10_lcrit		AIN2 critical minimum voltage (mV)
-
-in1_crit		12v input critical maximum voltage (mV)
-in2_crit		3.3V (VDD) input critical maximum voltage (mV)
-in3_crit		Channel A critical maximum voltage (mV)
-in4_crit		Channel B critical maximum voltage (mV)
-in5_crit		Channel C critical maximum voltage (mV)
-in6_crit		Channel D critical maximum voltage (mV)
-in7_crit		Channel E critical maximum voltage (mV)
-in8_crit		Channel F critical maximum voltage (mV)
-in9_crit		AIN1 critical maximum voltage (mV)
-in10_crit		AIN2 critical maximum voltage (mV)
-
-in1_crit_alarm		12v input critical alarm
-in2_crit_alarm		3.3V (VDD) input critical alarm
-in3_crit_alarm		Channel A critical alarm
-in4_crit_alarm		Channel B critical alarm
-in5_crit_alarm		Channel C critical alarm
-in6_crit_alarm		Channel D critical alarm
-in7_crit_alarm		Channel E critical alarm
-in8_crit_alarm		Channel F critical alarm
-in9_crit_alarm		AIN1 critical alarm
-in10_crit_alarm		AIN2 critical alarm
-
-temp1_input		Chip temperature
-temp1_min		Minimum chip temperature
-temp1_max		Maximum chip temperature
-temp1_crit		Critical chip temperature
-temp1_crit_alarm	Temperature critical alarm
-======================= =======================================================

MAINTAINERS

@@ -19596,13 +19596,6 @@ M:	Nicolas Pitre <nico@fluxnic.net>
 S:	Odd Fixes
 F:	drivers/net/ethernet/smsc/smc91x.*
 
-SMM665 HARDWARE MONITOR DRIVER
-M:	Guenter Roeck <linux@roeck-us.net>
-L:	linux-hwmon@vger.kernel.org
-S:	Maintained
-F:	Documentation/hwmon/smm665.rst
-F:	drivers/hwmon/smm665.c
-
 SMSC EMC2103 HARDWARE MONITOR DRIVER
 M:	Steve Glendinning <steve.glendinning@shawell.net>
 L:	linux-hwmon@vger.kernel.org

drivers/hwmon/Kconfig

@@ -1951,20 +1951,6 @@ config SENSORS_SFCTEMP
 	  This driver can also be built as a module.  If so, the module
 	  will be called sfctemp.
 
-config SENSORS_SMM665
-	tristate "Summit Microelectronics SMM665"
-	depends on I2C
-	help
-	  If you say yes here you get support for the hardware monitoring
-	  features of the Summit Microelectronics SMM665/SMM665B Six-Channel
-	  Active DC Output Controller / Monitor.
-
-	  Other supported chips are SMM465, SMM665C, SMM764, and SMM766.
-	  Support for those chips is untested.
-
-	  This driver can also be built as a module. If so, the module will
-	  be called smm665.
-
 config SENSORS_ADC128D818
 	tristate "Texas Instruments ADC128D818"
 	depends on I2C

drivers/hwmon/Makefile

@@ -191,7 +191,6 @@ obj-$(CONFIG_SENSORS_SHT3x)	+= sht3x.o
 obj-$(CONFIG_SENSORS_SHT4x)	+= sht4x.o
 obj-$(CONFIG_SENSORS_SHTC1)	+= shtc1.o
 obj-$(CONFIG_SENSORS_SIS5595)	+= sis5595.o
-obj-$(CONFIG_SENSORS_SMM665)	+= smm665.o
 obj-$(CONFIG_SENSORS_SMPRO)	+= smpro-hwmon.o
 obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
 obj-$(CONFIG_SENSORS_SMSC47M1)	+= smsc47m1.o