+++ /dev/null
-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
-======================= =======================================================
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Driver for SMM665 Power Controller / Monitor
- *
- * Copyright (C) 2010 Ericsson AB.
- *
- * This driver should also work for SMM465, SMM764, and SMM766, but is untested
- * for those chips. Only monitoring functionality is implemented.
- *
- * Datasheets:
- * http://www.summitmicro.com/prod_select/summary/SMM665/SMM665B_2089_20.pdf
- * http://www.summitmicro.com/prod_select/summary/SMM766B/SMM766B_2122.pdf
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/delay.h>
-#include <linux/jiffies.h>
-
-/* Internal reference voltage (VREF, x 1000 */
-#define SMM665_VREF_ADC_X1000 1250
-
-/* module parameters */
-static int vref = SMM665_VREF_ADC_X1000;
-module_param(vref, int, 0);
-MODULE_PARM_DESC(vref, "Reference voltage in mV");
-
-enum chips { smm465, smm665, smm665c, smm764, smm766 };
-
-/*
- * ADC channel addresses
- */
-#define SMM665_MISC16_ADC_DATA_A 0x00
-#define SMM665_MISC16_ADC_DATA_B 0x01
-#define SMM665_MISC16_ADC_DATA_C 0x02
-#define SMM665_MISC16_ADC_DATA_D 0x03
-#define SMM665_MISC16_ADC_DATA_E 0x04
-#define SMM665_MISC16_ADC_DATA_F 0x05
-#define SMM665_MISC16_ADC_DATA_VDD 0x06
-#define SMM665_MISC16_ADC_DATA_12V 0x07
-#define SMM665_MISC16_ADC_DATA_INT_TEMP 0x08
-#define SMM665_MISC16_ADC_DATA_AIN1 0x09
-#define SMM665_MISC16_ADC_DATA_AIN2 0x0a
-
-/*
- * Command registers
- */
-#define SMM665_MISC8_CMD_STS 0x80
-#define SMM665_MISC8_STATUS1 0x81
-#define SMM665_MISC8_STATUSS2 0x82
-#define SMM665_MISC8_IO_POLARITY 0x83
-#define SMM665_MISC8_PUP_POLARITY 0x84
-#define SMM665_MISC8_ADOC_STATUS1 0x85
-#define SMM665_MISC8_ADOC_STATUS2 0x86
-#define SMM665_MISC8_WRITE_PROT 0x87
-#define SMM665_MISC8_STS_TRACK 0x88
-
-/*
- * Configuration registers and register groups
- */
-#define SMM665_ADOC_ENABLE 0x0d
-#define SMM665_LIMIT_BASE 0x80 /* First limit register */
-
-/*
- * Limit register bit masks
- */
-#define SMM665_TRIGGER_RST 0x8000
-#define SMM665_TRIGGER_HEALTHY 0x4000
-#define SMM665_TRIGGER_POWEROFF 0x2000
-#define SMM665_TRIGGER_SHUTDOWN 0x1000
-#define SMM665_ADC_MASK 0x03ff
-
-#define smm665_is_critical(lim) ((lim) & (SMM665_TRIGGER_RST \
- | SMM665_TRIGGER_POWEROFF \
- | SMM665_TRIGGER_SHUTDOWN))
-/*
- * Fault register bit definitions
- * Values are merged from status registers 1/2,
- * with status register 1 providing the upper 8 bits.
- */
-#define SMM665_FAULT_A 0x0001
-#define SMM665_FAULT_B 0x0002
-#define SMM665_FAULT_C 0x0004
-#define SMM665_FAULT_D 0x0008
-#define SMM665_FAULT_E 0x0010
-#define SMM665_FAULT_F 0x0020
-#define SMM665_FAULT_VDD 0x0040
-#define SMM665_FAULT_12V 0x0080
-#define SMM665_FAULT_TEMP 0x0100
-#define SMM665_FAULT_AIN1 0x0200
-#define SMM665_FAULT_AIN2 0x0400
-
-/*
- * I2C Register addresses
- *
- * The configuration register needs to be the configured base register.
- * The command/status register address is derived from it.
- */
-#define SMM665_REGMASK 0x78
-#define SMM665_CMDREG_BASE 0x48
-#define SMM665_CONFREG_BASE 0x50
-
-/*
- * Equations given by chip manufacturer to calculate voltage/temperature values
- * vref = Reference voltage on VREF_ADC pin (module parameter)
- * adc = 10bit ADC value read back from registers
- */
-
-/* Voltage A-F and VDD */
-#define SMM665_VMON_ADC_TO_VOLTS(adc) ((adc) * vref / 256)
-
-/* Voltage 12VIN */
-#define SMM665_12VIN_ADC_TO_VOLTS(adc) ((adc) * vref * 3 / 256)
-
-/* Voltage AIN1, AIN2 */
-#define SMM665_AIN_ADC_TO_VOLTS(adc) ((adc) * vref / 512)
-
-/* Temp Sensor */
-#define SMM665_TEMP_ADC_TO_CELSIUS(adc) (((adc) <= 511) ? \
- ((int)(adc) * 1000 / 4) : \
- (((int)(adc) - 0x400) * 1000 / 4))
-
-#define SMM665_NUM_ADC 11
-
-/*
- * Chip dependent ADC conversion time, in uS
- */
-#define SMM665_ADC_WAIT_SMM665 70
-#define SMM665_ADC_WAIT_SMM766 185
-
-struct smm665_data {
- enum chips type;
- int conversion_time; /* ADC conversion time */
- struct i2c_client *client;
- 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.rst).
- * 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_swapped() instead.
- * We could also try to use i2c_master_recv(),
- * but that is not always supported.
- */
- rv = i2c_smbus_read_word_swapped(client, 0);
- if (rv < 0) {
- dev_dbg(&client->dev, "Failed to read ADC value: error %d", rv);
- return rv;
- }
- /*
- * Validate/verify readback adc channel (in bit 11..14).
- */
- radc = (rv >> 11) & 0x0f;
- if (radc != adc) {
- dev_dbg(&client->dev, "Unexpected RADC: Expected %d got %d",
- adc, radc);
- return -EIO;
- }
-
- return rv & SMM665_ADC_MASK;
-}
-
-static struct smm665_data *smm665_update_device(struct device *dev)
-{
- struct smm665_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->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 = true;
- }
-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 smm665_data *data = dev_get_drvdata(dev);
-
- return data->alarm_min_limit[index];
-}
-
-static int smm665_get_max(struct device *dev, int index)
-{
- struct smm665_data *data = dev_get_drvdata(dev);
-
- return data->alarm_max_limit[index];
-}
-
-static int smm665_get_lcrit(struct device *dev, int index)
-{
- struct smm665_data *data = dev_get_drvdata(dev);
-
- return data->critical_min_limit[index];
-}
-
-static int smm665_get_crit(struct device *dev, int index)
-{
- struct smm665_data *data = dev_get_drvdata(dev);
-
- 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 sysfs_emit(buf, "%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 sysfs_emit(buf, "%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_attrs[] = {
- &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,
-};
-
-ATTRIBUTE_GROUPS(smm665);
-
-static const struct i2c_device_id smm665_id[];
-
-static int smm665_probe(struct i2c_client *client)
-{
- struct i2c_adapter *adapter = client->adapter;
- struct smm665_data *data;
- struct device *hwmon_dev;
- 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;
-
- data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- i2c_set_clientdata(client, data);
- mutex_init(&data->update_lock);
-
- data->client = client;
- data->type = i2c_match_id(smm665_id, client)->driver_data;
- data->cmdreg = i2c_new_dummy_device(adapter, (client->addr & ~SMM665_REGMASK)
- | SMM665_CMDREG_BASE);
- if (IS_ERR(data->cmdreg))
- return PTR_ERR(data->cmdreg);
-
- 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);
- }
-
- hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
- client->name, data,
- smm665_groups);
- if (IS_ERR(hwmon_dev)) {
- ret = PTR_ERR(hwmon_dev);
- goto out_unregister;
- }
-
- return 0;
-
-out_unregister:
- i2c_unregister_device(data->cmdreg);
- return ret;
-}
-
-static void smm665_remove(struct i2c_client *client)
-{
- struct smm665_data *data = i2c_get_clientdata(client);
-
- i2c_unregister_device(data->cmdreg);
-}
-
-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,
-};
-
-module_i2c_driver(smm665_driver);
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("SMM665 driver");
-MODULE_LICENSE("GPL");
projects / platform / kernel / linux-starfive.git / commitdiff