hwmon: driver for SMM665 Six-Channel Active DC Output Controller/Monitor
This driver adds support for the monitoring features of the Summit Microelectronics SMM665 Six-Channel Active DC Output Controller/Monitor. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Cc: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Guenter Roeck
Linus Torvalds
Родитель
cfa3b24c38
Коммит
920fa1ffce
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@ -0,0 +1,157 @@
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Kernel driver smm665
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====================
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Supported chips:
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* Summit Microelectronics SMM465
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Prefix: 'smm465'
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Addresses scanned: -
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Datasheet:
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http://www.summitmicro.com/prod_select/summary/SMM465/SMM465DS.pdf
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* Summit Microelectronics SMM665, SMM665B
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Prefix: 'smm665'
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Addresses scanned: -
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Datasheet:
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http://www.summitmicro.com/prod_select/summary/SMM665/SMM665B_2089_20.pdf
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* Summit Microelectronics SMM665C
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Prefix: 'smm665c'
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Addresses scanned: -
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Datasheet:
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http://www.summitmicro.com/prod_select/summary/SMM665C/SMM665C_2125.pdf
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* Summit Microelectronics SMM764
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Prefix: 'smm764'
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Addresses scanned: -
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Datasheet:
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http://www.summitmicro.com/prod_select/summary/SMM764/SMM764_2098.pdf
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* Summit Microelectronics SMM766, SMM766B
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Prefix: 'smm766'
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Addresses scanned: -
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Datasheets:
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http://www.summitmicro.com/prod_select/summary/SMM766/SMM766_2086.pdf
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http://www.summitmicro.com/prod_select/summary/SMM766B/SMM766B_2122.pdf
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Author: Guenter Roeck <guenter.roeck@ericsson.com>
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Module Parameters
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-----------------
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* vref: int
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Default: 1250 (mV)
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Reference voltage on VREF_ADC pin in mV. It should not be necessary to set
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this parameter unless a non-default reference voltage is used.
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Description
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-----------
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[From datasheet] The SMM665 is an Active DC Output power supply Controller
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that monitors, margins and cascade sequences power. The part monitors six
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power supply channels as well as VDD, 12V input, two general-purpose analog
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inputs and an internal temperature sensor using a 10-bit ADC.
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Each monitored channel has its own high and low limits, plus a critical
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limit.
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Support for SMM465, SMM764, and SMM766 has been implemented but is untested.
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Usage Notes
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-----------
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This driver does not probe for devices, since there is no register which
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can be safely used to identify the chip. You will have to instantiate
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the devices explicitly. When instantiating the device, you have to specify
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its configuration register address.
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Example: the following will load the driver for an SMM665 at address 0x57
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on I2C bus #1:
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$ modprobe smm665
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$ echo smm665 0x57 > /sys/bus/i2c/devices/i2c-1/new_device
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Sysfs entries
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-------------
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This driver uses the values in the datasheet to convert ADC register values
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into the values specified in the sysfs-interface document. All attributes are
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read only.
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Min, max, lcrit, and crit values are used by the chip to trigger external signals
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and/or other activity. Triggered signals can include HEALTHY, RST, Power Off,
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or Fault depending on the chip configuration. The driver reports values as lcrit
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or crit if exceeding the limits triggers RST, Power Off, or Fault, and as min or
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max otherwise. For details please see the SMM665 datasheet.
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For SMM465 and SMM764, values for Channel E and F are reported but undefined.
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in1_input 12V input voltage (mV)
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in2_input 3.3V (VDD) input voltage (mV)
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in3_input Channel A voltage (mV)
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in4_input Channel B voltage (mV)
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in5_input Channel C voltage (mV)
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in6_input Channel D voltage (mV)
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in7_input Channel E voltage (mV)
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in8_input Channel F voltage (mV)
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in9_input AIN1 voltage (mV)
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in10_input AIN2 voltage (mV)
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in1_min 12v input minimum voltage (mV)
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in2_min 3.3V (VDD) input minimum voltage (mV)
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in3_min Channel A minimum voltage (mV)
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in4_min Channel B minimum voltage (mV)
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in5_min Channel C minimum voltage (mV)
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in6_min Channel D minimum voltage (mV)
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in7_min Channel E minimum voltage (mV)
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in8_min Channel F minimum voltage (mV)
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in9_min AIN1 minimum voltage (mV)
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in10_min AIN2 minimum voltage (mV)
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in1_max 12v input maximum voltage (mV)
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in2_max 3.3V (VDD) input maximum voltage (mV)
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in3_max Channel A maximum voltage (mV)
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in4_max Channel B maximum voltage (mV)
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in5_max Channel C maximum voltage (mV)
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in6_max Channel D maximum voltage (mV)
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in7_max Channel E maximum voltage (mV)
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in8_max Channel F maximum voltage (mV)
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in9_max AIN1 maximum voltage (mV)
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in10_max AIN2 maximum voltage (mV)
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in1_lcrit 12v input critical minimum voltage (mV)
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in2_lcrit 3.3V (VDD) input critical minimum voltage (mV)
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in3_lcrit Channel A critical minimum voltage (mV)
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in4_lcrit Channel B critical minimum voltage (mV)
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in5_lcrit Channel C critical minimum voltage (mV)
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in6_lcrit Channel D critical minimum voltage (mV)
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in7_lcrit Channel E critical minimum voltage (mV)
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in8_lcrit Channel F critical minimum voltage (mV)
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in9_lcrit AIN1 critical minimum voltage (mV)
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in10_lcrit AIN2 critical minimum voltage (mV)
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in1_crit 12v input critical maximum voltage (mV)
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in2_crit 3.3V (VDD) input critical maximum voltage (mV)
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in3_crit Channel A critical maximum voltage (mV)
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in4_crit Channel B critical maximum voltage (mV)
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in5_crit Channel C critical maximum voltage (mV)
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in6_crit Channel D critical maximum voltage (mV)
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in7_crit Channel E critical maximum voltage (mV)
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in8_crit Channel F critical maximum voltage (mV)
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in9_crit AIN1 critical maximum voltage (mV)
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in10_crit AIN2 critical maximum voltage (mV)
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in1_crit_alarm 12v input critical alarm
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in2_crit_alarm 3.3V (VDD) input critical alarm
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in3_crit_alarm Channel A critical alarm
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in4_crit_alarm Channel B critical alarm
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in5_crit_alarm Channel C critical alarm
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in6_crit_alarm Channel D critical alarm
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in7_crit_alarm Channel E critical alarm
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in8_crit_alarm Channel F critical alarm
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in9_crit_alarm AIN1 critical alarm
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in10_crit_alarm AIN2 critical alarm
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temp1_input Chip tempererature
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temp1_min Mimimum chip tempererature
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temp1_max Maximum chip tempererature
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temp1_crit Critical chip tempererature
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temp1_crit_alarm Temperature critical alarm
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@ -5251,6 +5251,13 @@ M: Nicolas Pitre <nico@fluxnic.net>
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S: Odd Fixes
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F: drivers/net/smc91x.*
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SMM665 HARDWARE MONITOR DRIVER
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M: Guenter Roeck <linux@roeck-us.net>
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L: lm-sensors@lm-sensors.org
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S: Maintained
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F: Documentation/hwmon/smm665
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F: drivers/hwmon/smm665.c
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SMSC47B397 HARDWARE MONITOR DRIVER
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M: "Mark M. Hoffman" <mhoffman@lightlink.com>
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L: lm-sensors@lm-sensors.org
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@ -756,6 +756,21 @@ config SENSORS_SIS5595
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This driver can also be built as a module. If so, the module
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will be called sis5595.
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config SENSORS_SMM665
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tristate "Summit Microelectronics SMM665"
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depends on I2C && EXPERIMENTAL
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default n
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help
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If you say yes here you get support for the hardware monitoring
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features of the Summit Microelectronics SMM665/SMM665B Six-Channel
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Active DC Output Controller / Monitor.
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Other supported chips are SMM465, SMM665C, SMM764, and SMM766.
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Support for those chips is untested.
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This driver can also be built as a module. If so, the module will
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be called smm665.
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config SENSORS_DME1737
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tristate "SMSC DME1737, SCH311x and compatibles"
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depends on I2C && EXPERIMENTAL
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@ -88,6 +88,7 @@ obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
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obj-$(CONFIG_SENSORS_S3C) += s3c-hwmon.o
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obj-$(CONFIG_SENSORS_SHT15) += sht15.o
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obj-$(CONFIG_SENSORS_SIS5595) += sis5595.o
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obj-$(CONFIG_SENSORS_SMM665) += smm665.o
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obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
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obj-$(CONFIG_SENSORS_SMSC47M1) += smsc47m1.o
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obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o
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@ -0,0 +1,743 @@
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/*
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* Driver for SMM665 Power Controller / Monitor
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*
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* Copyright (C) 2010 Ericsson AB.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This driver should also work for SMM465, SMM764, and SMM766, but is untested
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* for those chips. Only monitoring functionality is implemented.
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*
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* Datasheets:
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* http://www.summitmicro.com/prod_select/summary/SMM665/SMM665B_2089_20.pdf
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* http://www.summitmicro.com/prod_select/summary/SMM766B/SMM766B_2122.pdf
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/delay.h>
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/* Internal reference voltage (VREF, x 1000 */
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#define SMM665_VREF_ADC_X1000 1250
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/* module parameters */
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static int vref = SMM665_VREF_ADC_X1000;
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module_param(vref, int, 0);
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MODULE_PARM_DESC(vref, "Reference voltage in mV");
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enum chips { smm465, smm665, smm665c, smm764, smm766 };
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/*
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* ADC channel addresses
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*/
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#define SMM665_MISC16_ADC_DATA_A 0x00
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#define SMM665_MISC16_ADC_DATA_B 0x01
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#define SMM665_MISC16_ADC_DATA_C 0x02
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#define SMM665_MISC16_ADC_DATA_D 0x03
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#define SMM665_MISC16_ADC_DATA_E 0x04
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#define SMM665_MISC16_ADC_DATA_F 0x05
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#define SMM665_MISC16_ADC_DATA_VDD 0x06
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#define SMM665_MISC16_ADC_DATA_12V 0x07
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#define SMM665_MISC16_ADC_DATA_INT_TEMP 0x08
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#define SMM665_MISC16_ADC_DATA_AIN1 0x09
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#define SMM665_MISC16_ADC_DATA_AIN2 0x0a
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/*
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* Command registers
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*/
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#define SMM665_MISC8_CMD_STS 0x80
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#define SMM665_MISC8_STATUS1 0x81
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#define SMM665_MISC8_STATUSS2 0x82
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#define SMM665_MISC8_IO_POLARITY 0x83
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#define SMM665_MISC8_PUP_POLARITY 0x84
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#define SMM665_MISC8_ADOC_STATUS1 0x85
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#define SMM665_MISC8_ADOC_STATUS2 0x86
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#define SMM665_MISC8_WRITE_PROT 0x87
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#define SMM665_MISC8_STS_TRACK 0x88
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/*
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* Configuration registers and register groups
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*/
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#define SMM665_ADOC_ENABLE 0x0d
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#define SMM665_LIMIT_BASE 0x80 /* First limit register */
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/*
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* Limit register bit masks
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*/
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#define SMM665_TRIGGER_RST 0x8000
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#define SMM665_TRIGGER_HEALTHY 0x4000
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#define SMM665_TRIGGER_POWEROFF 0x2000
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#define SMM665_TRIGGER_SHUTDOWN 0x1000
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#define SMM665_ADC_MASK 0x03ff
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#define smm665_is_critical(lim) ((lim) & (SMM665_TRIGGER_RST \
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| SMM665_TRIGGER_POWEROFF \
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| SMM665_TRIGGER_SHUTDOWN))
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/*
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* Fault register bit definitions
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* Values are merged from status registers 1/2,
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* with status register 1 providing the upper 8 bits.
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*/
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#define SMM665_FAULT_A 0x0001
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#define SMM665_FAULT_B 0x0002
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#define SMM665_FAULT_C 0x0004
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#define SMM665_FAULT_D 0x0008
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#define SMM665_FAULT_E 0x0010
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#define SMM665_FAULT_F 0x0020
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#define SMM665_FAULT_VDD 0x0040
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#define SMM665_FAULT_12V 0x0080
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#define SMM665_FAULT_TEMP 0x0100
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#define SMM665_FAULT_AIN1 0x0200
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#define SMM665_FAULT_AIN2 0x0400
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/*
|
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* I2C Register addresses
|
||||
*
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* The configuration register needs to be the configured base register.
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* The command/status register address is derived from it.
|
||||
*/
|
||||
#define SMM665_REGMASK 0x78
|
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#define SMM665_CMDREG_BASE 0x48
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#define SMM665_CONFREG_BASE 0x50
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|
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/*
|
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* Equations given by chip manufacturer to calculate voltage/temperature values
|
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* vref = Reference voltage on VREF_ADC pin (module parameter)
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* adc = 10bit ADC value read back from registers
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*/
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||||
|
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/* Voltage A-F and VDD */
|
||||
#define SMM665_VMON_ADC_TO_VOLTS(adc) ((adc) * vref / 256)
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|
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/* Voltage 12VIN */
|
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#define SMM665_12VIN_ADC_TO_VOLTS(adc) ((adc) * vref * 3 / 256)
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|
||||
/* Voltage AIN1, AIN2 */
|
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#define SMM665_AIN_ADC_TO_VOLTS(adc) ((adc) * vref / 512)
|
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|
||||
/* Temp Sensor */
|
||||
#define SMM665_TEMP_ADC_TO_CELSIUS(adc) ((adc) <= 511) ? \
|
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((int)(adc) * 1000 / 4) : \
|
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(((int)(adc) - 0x400) * 1000 / 4)
|
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|
||||
#define SMM665_NUM_ADC 11
|
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|
||||
/*
|
||||
* Chip dependent ADC conversion time, in uS
|
||||
*/
|
||||
#define SMM665_ADC_WAIT_SMM665 70
|
||||
#define SMM665_ADC_WAIT_SMM766 185
|
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|
||||
struct smm665_data {
|
||||
enum chips type;
|
||||
int conversion_time; /* ADC conversion time */
|
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struct device *hwmon_dev;
|
||||
struct mutex update_lock;
|
||||
bool valid;
|
||||
unsigned long last_updated; /* in jiffies */
|
||||
u16 adc[SMM665_NUM_ADC]; /* adc values (raw) */
|
||||
u16 faults; /* fault status */
|
||||
/* The following values are in mV */
|
||||
int critical_min_limit[SMM665_NUM_ADC];
|
||||
int alarm_min_limit[SMM665_NUM_ADC];
|
||||
int critical_max_limit[SMM665_NUM_ADC];
|
||||
int alarm_max_limit[SMM665_NUM_ADC];
|
||||
struct i2c_client *cmdreg;
|
||||
};
|
||||
|
||||
/*
|
||||
* smm665_read16()
|
||||
*
|
||||
* Read 16 bit value from <reg>, <reg+1>. Upper 8 bits are in <reg>.
|
||||
*/
|
||||
static int smm665_read16(struct i2c_client *client, int reg)
|
||||
{
|
||||
int rv, val;
|
||||
|
||||
rv = i2c_smbus_read_byte_data(client, reg);
|
||||
if (rv < 0)
|
||||
return rv;
|
||||
val = rv << 8;
|
||||
rv = i2c_smbus_read_byte_data(client, reg + 1);
|
||||
if (rv < 0)
|
||||
return rv;
|
||||
val |= rv;
|
||||
return val;
|
||||
}
|
||||
|
||||
/*
|
||||
* Read adc value.
|
||||
*/
|
||||
static int smm665_read_adc(struct smm665_data *data, int adc)
|
||||
{
|
||||
struct i2c_client *client = data->cmdreg;
|
||||
int rv;
|
||||
int radc;
|
||||
|
||||
/*
|
||||
* Algorithm for reading ADC, per SMM665 datasheet
|
||||
*
|
||||
* {[S][addr][W][Ack]} {[offset][Ack]} {[S][addr][R][Nack]}
|
||||
* [wait conversion time]
|
||||
* {[S][addr][R][Ack]} {[datahi][Ack]} {[datalo][Ack][P]}
|
||||
*
|
||||
* To implement the first part of this exchange,
|
||||
* do a full read transaction and expect a failure/Nack.
|
||||
* This sets up the address pointer on the SMM665
|
||||
* and starts the ADC conversion.
|
||||
* Then do a two-byte read transaction.
|
||||
*/
|
||||
rv = i2c_smbus_read_byte_data(client, adc << 3);
|
||||
if (rv != -ENXIO) {
|
||||
/*
|
||||
* We expect ENXIO to reflect NACK
|
||||
* (per Documentation/i2c/fault-codes).
|
||||
* Everything else is an error.
|
||||
*/
|
||||
dev_dbg(&client->dev,
|
||||
"Unexpected return code %d when setting ADC index", rv);
|
||||
return (rv < 0) ? rv : -EIO;
|
||||
}
|
||||
|
||||
udelay(data->conversion_time);
|
||||
|
||||
/*
|
||||
* Now read two bytes.
|
||||
*
|
||||
* Neither i2c_smbus_read_byte() nor
|
||||
* i2c_smbus_read_block_data() worked here,
|
||||
* so use i2c_smbus_read_word_data() instead.
|
||||
* We could also try to use i2c_master_recv(),
|
||||
* but that is not always supported.
|
||||
*/
|
||||
rv = i2c_smbus_read_word_data(client, 0);
|
||||
if (rv < 0) {
|
||||
dev_dbg(&client->dev, "Failed to read ADC value: error %d", rv);
|
||||
return -1;
|
||||
}
|
||||
/*
|
||||
* Validate/verify readback adc channel (in bit 11..14).
|
||||
* High byte is in lower 8 bit of rv, so only shift by 3.
|
||||
*/
|
||||
radc = (rv >> 3) & 0x0f;
|
||||
if (radc != adc) {
|
||||
dev_dbg(&client->dev, "Unexpected RADC: Expected %d got %d",
|
||||
adc, radc);
|
||||
return -EIO;
|
||||
}
|
||||
/*
|
||||
* Chip replies with H/L, while SMBus expects L/H.
|
||||
* Thus, byte order is reversed, and we have to swap
|
||||
* the result.
|
||||
*/
|
||||
rv = swab16(rv) & SMM665_ADC_MASK;
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
static struct smm665_data *smm665_update_device(struct device *dev)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct smm665_data *data = i2c_get_clientdata(client);
|
||||
struct smm665_data *ret = data;
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
|
||||
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
|
||||
int i, val;
|
||||
|
||||
/*
|
||||
* read status registers
|
||||
*/
|
||||
val = smm665_read16(client, SMM665_MISC8_STATUS1);
|
||||
if (unlikely(val < 0)) {
|
||||
ret = ERR_PTR(val);
|
||||
goto abort;
|
||||
}
|
||||
data->faults = val;
|
||||
|
||||
/* Read adc registers */
|
||||
for (i = 0; i < SMM665_NUM_ADC; i++) {
|
||||
val = smm665_read_adc(data, i);
|
||||
if (unlikely(val < 0)) {
|
||||
ret = ERR_PTR(val);
|
||||
goto abort;
|
||||
}
|
||||
data->adc[i] = val;
|
||||
}
|
||||
data->last_updated = jiffies;
|
||||
data->valid = 1;
|
||||
}
|
||||
abort:
|
||||
mutex_unlock(&data->update_lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Return converted value from given adc */
|
||||
static int smm665_convert(u16 adcval, int index)
|
||||
{
|
||||
int val = 0;
|
||||
|
||||
switch (index) {
|
||||
case SMM665_MISC16_ADC_DATA_12V:
|
||||
val = SMM665_12VIN_ADC_TO_VOLTS(adcval & SMM665_ADC_MASK);
|
||||
break;
|
||||
|
||||
case SMM665_MISC16_ADC_DATA_VDD:
|
||||
case SMM665_MISC16_ADC_DATA_A:
|
||||
case SMM665_MISC16_ADC_DATA_B:
|
||||
case SMM665_MISC16_ADC_DATA_C:
|
||||
case SMM665_MISC16_ADC_DATA_D:
|
||||
case SMM665_MISC16_ADC_DATA_E:
|
||||
case SMM665_MISC16_ADC_DATA_F:
|
||||
val = SMM665_VMON_ADC_TO_VOLTS(adcval & SMM665_ADC_MASK);
|
||||
break;
|
||||
|
||||
case SMM665_MISC16_ADC_DATA_AIN1:
|
||||
case SMM665_MISC16_ADC_DATA_AIN2:
|
||||
val = SMM665_AIN_ADC_TO_VOLTS(adcval & SMM665_ADC_MASK);
|
||||
break;
|
||||
|
||||
case SMM665_MISC16_ADC_DATA_INT_TEMP:
|
||||
val = SMM665_TEMP_ADC_TO_CELSIUS(adcval & SMM665_ADC_MASK);
|
||||
break;
|
||||
|
||||
default:
|
||||
/* If we get here, the developer messed up */
|
||||
WARN_ON_ONCE(1);
|
||||
break;
|
||||
}
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
static int smm665_get_min(struct device *dev, int index)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct smm665_data *data = i2c_get_clientdata(client);
|
||||
|
||||
return data->alarm_min_limit[index];
|
||||
}
|
||||
|
||||
static int smm665_get_max(struct device *dev, int index)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct smm665_data *data = i2c_get_clientdata(client);
|
||||
|
||||
return data->alarm_max_limit[index];
|
||||
}
|
||||
|
||||
static int smm665_get_lcrit(struct device *dev, int index)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct smm665_data *data = i2c_get_clientdata(client);
|
||||
|
||||
return data->critical_min_limit[index];
|
||||
}
|
||||
|
||||
static int smm665_get_crit(struct device *dev, int index)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct smm665_data *data = i2c_get_clientdata(client);
|
||||
|
||||
return data->critical_max_limit[index];
|
||||
}
|
||||
|
||||
static ssize_t smm665_show_crit_alarm(struct device *dev,
|
||||
struct device_attribute *da, char *buf)
|
||||
{
|
||||
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
|
||||
struct smm665_data *data = smm665_update_device(dev);
|
||||
int val = 0;
|
||||
|
||||
if (IS_ERR(data))
|
||||
return PTR_ERR(data);
|
||||
|
||||
if (data->faults & (1 << attr->index))
|
||||
val = 1;
|
||||
|
||||
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
||||
}
|
||||
|
||||
static ssize_t smm665_show_input(struct device *dev,
|
||||
struct device_attribute *da, char *buf)
|
||||
{
|
||||
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
|
||||
struct smm665_data *data = smm665_update_device(dev);
|
||||
int adc = attr->index;
|
||||
int val;
|
||||
|
||||
if (IS_ERR(data))
|
||||
return PTR_ERR(data);
|
||||
|
||||
val = smm665_convert(data->adc[adc], adc);
|
||||
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
||||
}
|
||||
|
||||
#define SMM665_SHOW(what) \
|
||||
static ssize_t smm665_show_##what(struct device *dev, \
|
||||
struct device_attribute *da, char *buf) \
|
||||
{ \
|
||||
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
|
||||
const int val = smm665_get_##what(dev, attr->index); \
|
||||
return snprintf(buf, PAGE_SIZE, "%d\n", val); \
|
||||
}
|
||||
|
||||
SMM665_SHOW(min);
|
||||
SMM665_SHOW(max);
|
||||
SMM665_SHOW(lcrit);
|
||||
SMM665_SHOW(crit);
|
||||
|
||||
/* These macros are used below in constructing device attribute objects
|
||||
* for use with sysfs_create_group() to make a sysfs device file
|
||||
* for each register.
|
||||
*/
|
||||
|
||||
#define SMM665_ATTR(name, type, cmd_idx) \
|
||||
static SENSOR_DEVICE_ATTR(name##_##type, S_IRUGO, \
|
||||
smm665_show_##type, NULL, cmd_idx)
|
||||
|
||||
/* Construct a sensor_device_attribute structure for each register */
|
||||
|
||||
/* Input voltages */
|
||||
SMM665_ATTR(in1, input, SMM665_MISC16_ADC_DATA_12V);
|
||||
SMM665_ATTR(in2, input, SMM665_MISC16_ADC_DATA_VDD);
|
||||
SMM665_ATTR(in3, input, SMM665_MISC16_ADC_DATA_A);
|
||||
SMM665_ATTR(in4, input, SMM665_MISC16_ADC_DATA_B);
|
||||
SMM665_ATTR(in5, input, SMM665_MISC16_ADC_DATA_C);
|
||||
SMM665_ATTR(in6, input, SMM665_MISC16_ADC_DATA_D);
|
||||
SMM665_ATTR(in7, input, SMM665_MISC16_ADC_DATA_E);
|
||||
SMM665_ATTR(in8, input, SMM665_MISC16_ADC_DATA_F);
|
||||
SMM665_ATTR(in9, input, SMM665_MISC16_ADC_DATA_AIN1);
|
||||
SMM665_ATTR(in10, input, SMM665_MISC16_ADC_DATA_AIN2);
|
||||
|
||||
/* Input voltages min */
|
||||
SMM665_ATTR(in1, min, SMM665_MISC16_ADC_DATA_12V);
|
||||
SMM665_ATTR(in2, min, SMM665_MISC16_ADC_DATA_VDD);
|
||||
SMM665_ATTR(in3, min, SMM665_MISC16_ADC_DATA_A);
|
||||
SMM665_ATTR(in4, min, SMM665_MISC16_ADC_DATA_B);
|
||||
SMM665_ATTR(in5, min, SMM665_MISC16_ADC_DATA_C);
|
||||
SMM665_ATTR(in6, min, SMM665_MISC16_ADC_DATA_D);
|
||||
SMM665_ATTR(in7, min, SMM665_MISC16_ADC_DATA_E);
|
||||
SMM665_ATTR(in8, min, SMM665_MISC16_ADC_DATA_F);
|
||||
SMM665_ATTR(in9, min, SMM665_MISC16_ADC_DATA_AIN1);
|
||||
SMM665_ATTR(in10, min, SMM665_MISC16_ADC_DATA_AIN2);
|
||||
|
||||
/* Input voltages max */
|
||||
SMM665_ATTR(in1, max, SMM665_MISC16_ADC_DATA_12V);
|
||||
SMM665_ATTR(in2, max, SMM665_MISC16_ADC_DATA_VDD);
|
||||
SMM665_ATTR(in3, max, SMM665_MISC16_ADC_DATA_A);
|
||||
SMM665_ATTR(in4, max, SMM665_MISC16_ADC_DATA_B);
|
||||
SMM665_ATTR(in5, max, SMM665_MISC16_ADC_DATA_C);
|
||||
SMM665_ATTR(in6, max, SMM665_MISC16_ADC_DATA_D);
|
||||
SMM665_ATTR(in7, max, SMM665_MISC16_ADC_DATA_E);
|
||||
SMM665_ATTR(in8, max, SMM665_MISC16_ADC_DATA_F);
|
||||
SMM665_ATTR(in9, max, SMM665_MISC16_ADC_DATA_AIN1);
|
||||
SMM665_ATTR(in10, max, SMM665_MISC16_ADC_DATA_AIN2);
|
||||
|
||||
/* Input voltages lcrit */
|
||||
SMM665_ATTR(in1, lcrit, SMM665_MISC16_ADC_DATA_12V);
|
||||
SMM665_ATTR(in2, lcrit, SMM665_MISC16_ADC_DATA_VDD);
|
||||
SMM665_ATTR(in3, lcrit, SMM665_MISC16_ADC_DATA_A);
|
||||
SMM665_ATTR(in4, lcrit, SMM665_MISC16_ADC_DATA_B);
|
||||
SMM665_ATTR(in5, lcrit, SMM665_MISC16_ADC_DATA_C);
|
||||
SMM665_ATTR(in6, lcrit, SMM665_MISC16_ADC_DATA_D);
|
||||
SMM665_ATTR(in7, lcrit, SMM665_MISC16_ADC_DATA_E);
|
||||
SMM665_ATTR(in8, lcrit, SMM665_MISC16_ADC_DATA_F);
|
||||
SMM665_ATTR(in9, lcrit, SMM665_MISC16_ADC_DATA_AIN1);
|
||||
SMM665_ATTR(in10, lcrit, SMM665_MISC16_ADC_DATA_AIN2);
|
||||
|
||||
/* Input voltages crit */
|
||||
SMM665_ATTR(in1, crit, SMM665_MISC16_ADC_DATA_12V);
|
||||
SMM665_ATTR(in2, crit, SMM665_MISC16_ADC_DATA_VDD);
|
||||
SMM665_ATTR(in3, crit, SMM665_MISC16_ADC_DATA_A);
|
||||
SMM665_ATTR(in4, crit, SMM665_MISC16_ADC_DATA_B);
|
||||
SMM665_ATTR(in5, crit, SMM665_MISC16_ADC_DATA_C);
|
||||
SMM665_ATTR(in6, crit, SMM665_MISC16_ADC_DATA_D);
|
||||
SMM665_ATTR(in7, crit, SMM665_MISC16_ADC_DATA_E);
|
||||
SMM665_ATTR(in8, crit, SMM665_MISC16_ADC_DATA_F);
|
||||
SMM665_ATTR(in9, crit, SMM665_MISC16_ADC_DATA_AIN1);
|
||||
SMM665_ATTR(in10, crit, SMM665_MISC16_ADC_DATA_AIN2);
|
||||
|
||||
/* critical alarms */
|
||||
SMM665_ATTR(in1, crit_alarm, SMM665_FAULT_12V);
|
||||
SMM665_ATTR(in2, crit_alarm, SMM665_FAULT_VDD);
|
||||
SMM665_ATTR(in3, crit_alarm, SMM665_FAULT_A);
|
||||
SMM665_ATTR(in4, crit_alarm, SMM665_FAULT_B);
|
||||
SMM665_ATTR(in5, crit_alarm, SMM665_FAULT_C);
|
||||
SMM665_ATTR(in6, crit_alarm, SMM665_FAULT_D);
|
||||
SMM665_ATTR(in7, crit_alarm, SMM665_FAULT_E);
|
||||
SMM665_ATTR(in8, crit_alarm, SMM665_FAULT_F);
|
||||
SMM665_ATTR(in9, crit_alarm, SMM665_FAULT_AIN1);
|
||||
SMM665_ATTR(in10, crit_alarm, SMM665_FAULT_AIN2);
|
||||
|
||||
/* Temperature */
|
||||
SMM665_ATTR(temp1, input, SMM665_MISC16_ADC_DATA_INT_TEMP);
|
||||
SMM665_ATTR(temp1, min, SMM665_MISC16_ADC_DATA_INT_TEMP);
|
||||
SMM665_ATTR(temp1, max, SMM665_MISC16_ADC_DATA_INT_TEMP);
|
||||
SMM665_ATTR(temp1, lcrit, SMM665_MISC16_ADC_DATA_INT_TEMP);
|
||||
SMM665_ATTR(temp1, crit, SMM665_MISC16_ADC_DATA_INT_TEMP);
|
||||
SMM665_ATTR(temp1, crit_alarm, SMM665_FAULT_TEMP);
|
||||
|
||||
/*
|
||||
* Finally, construct an array of pointers to members of the above objects,
|
||||
* as required for sysfs_create_group()
|
||||
*/
|
||||
static struct attribute *smm665_attributes[] = {
|
||||
&sensor_dev_attr_in1_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in1_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in1_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in1_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in1_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in1_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in2_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in2_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in2_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in2_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in2_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in2_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in3_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in3_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in3_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in3_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in3_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in3_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in4_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in4_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in4_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in4_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in4_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in4_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in5_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in5_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in5_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in5_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in5_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in5_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in6_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in6_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in6_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in6_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in6_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in6_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in7_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in7_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in7_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in7_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in7_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in7_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in8_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in8_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in8_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in8_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in8_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in8_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in9_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in9_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in9_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in9_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in9_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in9_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_in10_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in10_min.dev_attr.attr,
|
||||
&sensor_dev_attr_in10_max.dev_attr.attr,
|
||||
&sensor_dev_attr_in10_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_in10_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_in10_crit_alarm.dev_attr.attr,
|
||||
|
||||
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
||||
&sensor_dev_attr_temp1_min.dev_attr.attr,
|
||||
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
||||
&sensor_dev_attr_temp1_lcrit.dev_attr.attr,
|
||||
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
||||
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
|
||||
|
||||
NULL,
|
||||
};
|
||||
|
||||
static const struct attribute_group smm665_group = {
|
||||
.attrs = smm665_attributes,
|
||||
};
|
||||
|
||||
static int smm665_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct i2c_adapter *adapter = client->adapter;
|
||||
struct smm665_data *data;
|
||||
int i, ret;
|
||||
|
||||
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA
|
||||
| I2C_FUNC_SMBUS_WORD_DATA))
|
||||
return -ENODEV;
|
||||
|
||||
if (i2c_smbus_read_byte_data(client, SMM665_ADOC_ENABLE) < 0)
|
||||
return -ENODEV;
|
||||
|
||||
ret = -ENOMEM;
|
||||
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
||||
if (!data)
|
||||
goto out_return;
|
||||
|
||||
i2c_set_clientdata(client, data);
|
||||
mutex_init(&data->update_lock);
|
||||
|
||||
data->type = id->driver_data;
|
||||
data->cmdreg = i2c_new_dummy(adapter, (client->addr & ~SMM665_REGMASK)
|
||||
| SMM665_CMDREG_BASE);
|
||||
if (!data->cmdreg)
|
||||
goto out_kfree;
|
||||
|
||||
switch (data->type) {
|
||||
case smm465:
|
||||
case smm665:
|
||||
data->conversion_time = SMM665_ADC_WAIT_SMM665;
|
||||
break;
|
||||
case smm665c:
|
||||
case smm764:
|
||||
case smm766:
|
||||
data->conversion_time = SMM665_ADC_WAIT_SMM766;
|
||||
break;
|
||||
}
|
||||
|
||||
ret = -ENODEV;
|
||||
if (i2c_smbus_read_byte_data(data->cmdreg, SMM665_MISC8_CMD_STS) < 0)
|
||||
goto out_unregister;
|
||||
|
||||
/*
|
||||
* Read limits.
|
||||
*
|
||||
* Limit registers start with register SMM665_LIMIT_BASE.
|
||||
* Each channel uses 8 registers, providing four limit values
|
||||
* per channel. Each limit value requires two registers, with the
|
||||
* high byte in the first register and the low byte in the second
|
||||
* register. The first two limits are under limit values, followed
|
||||
* by two over limit values.
|
||||
*
|
||||
* Limit register order matches the ADC register order, so we use
|
||||
* ADC register defines throughout the code to index limit registers.
|
||||
*
|
||||
* We save the first retrieved value both as "critical" and "alarm"
|
||||
* value. The second value overwrites either the critical or the
|
||||
* alarm value, depending on its configuration. This ensures that both
|
||||
* critical and alarm values are initialized, even if both registers are
|
||||
* configured as critical or non-critical.
|
||||
*/
|
||||
for (i = 0; i < SMM665_NUM_ADC; i++) {
|
||||
int val;
|
||||
|
||||
val = smm665_read16(client, SMM665_LIMIT_BASE + i * 8);
|
||||
if (unlikely(val < 0))
|
||||
goto out_unregister;
|
||||
data->critical_min_limit[i] = data->alarm_min_limit[i]
|
||||
= smm665_convert(val, i);
|
||||
val = smm665_read16(client, SMM665_LIMIT_BASE + i * 8 + 2);
|
||||
if (unlikely(val < 0))
|
||||
goto out_unregister;
|
||||
if (smm665_is_critical(val))
|
||||
data->critical_min_limit[i] = smm665_convert(val, i);
|
||||
else
|
||||
data->alarm_min_limit[i] = smm665_convert(val, i);
|
||||
val = smm665_read16(client, SMM665_LIMIT_BASE + i * 8 + 4);
|
||||
if (unlikely(val < 0))
|
||||
goto out_unregister;
|
||||
data->critical_max_limit[i] = data->alarm_max_limit[i]
|
||||
= smm665_convert(val, i);
|
||||
val = smm665_read16(client, SMM665_LIMIT_BASE + i * 8 + 6);
|
||||
if (unlikely(val < 0))
|
||||
goto out_unregister;
|
||||
if (smm665_is_critical(val))
|
||||
data->critical_max_limit[i] = smm665_convert(val, i);
|
||||
else
|
||||
data->alarm_max_limit[i] = smm665_convert(val, i);
|
||||
}
|
||||
|
||||
/* Register sysfs hooks */
|
||||
ret = sysfs_create_group(&client->dev.kobj, &smm665_group);
|
||||
if (ret)
|
||||
goto out_unregister;
|
||||
|
||||
data->hwmon_dev = hwmon_device_register(&client->dev);
|
||||
if (IS_ERR(data->hwmon_dev)) {
|
||||
ret = PTR_ERR(data->hwmon_dev);
|
||||
goto out_remove_group;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
out_remove_group:
|
||||
sysfs_remove_group(&client->dev.kobj, &smm665_group);
|
||||
out_unregister:
|
||||
i2c_unregister_device(data->cmdreg);
|
||||
out_kfree:
|
||||
kfree(data);
|
||||
out_return:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int smm665_remove(struct i2c_client *client)
|
||||
{
|
||||
struct smm665_data *data = i2c_get_clientdata(client);
|
||||
|
||||
i2c_unregister_device(data->cmdreg);
|
||||
hwmon_device_unregister(data->hwmon_dev);
|
||||
sysfs_remove_group(&client->dev.kobj, &smm665_group);
|
||||
|
||||
kfree(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id smm665_id[] = {
|
||||
{"smm465", smm465},
|
||||
{"smm665", smm665},
|
||||
{"smm665c", smm665c},
|
||||
{"smm764", smm764},
|
||||
{"smm766", smm766},
|
||||
{}
|
||||
};
|
||||
|
||||
MODULE_DEVICE_TABLE(i2c, smm665_id);
|
||||
|
||||
/* This is the driver that will be inserted */
|
||||
static struct i2c_driver smm665_driver = {
|
||||
.driver = {
|
||||
.name = "smm665",
|
||||
},
|
||||
.probe = smm665_probe,
|
||||
.remove = smm665_remove,
|
||||
.id_table = smm665_id,
|
||||
};
|
||||
|
||||
static int __init smm665_init(void)
|
||||
{
|
||||
return i2c_add_driver(&smm665_driver);
|
||||
}
|
||||
|
||||
static void __exit smm665_exit(void)
|
||||
{
|
||||
i2c_del_driver(&smm665_driver);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Guenter Roeck");
|
||||
MODULE_DESCRIPTION("SMM665 driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_init(smm665_init);
|
||||
module_exit(smm665_exit);
|
||||
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