^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * adt7x10.c - Part of lm_sensors, Linux kernel modules for hardware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * monitoring
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This driver handles the ADT7410 and compatible digital temperature sensors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Hartmut Knaack <knaack.h@gmx.de> 2012-07-22
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * based on lm75.c by Frodo Looijaard <frodol@dds.nl>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * and adt7410.c from iio-staging by Sonic Zhang <sonic.zhang@analog.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/hwmon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/hwmon-sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "adt7x10.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * ADT7X10 status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define ADT7X10_STAT_T_LOW (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define ADT7X10_STAT_T_HIGH (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define ADT7X10_STAT_T_CRIT (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define ADT7X10_STAT_NOT_RDY (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * ADT7X10 config
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define ADT7X10_FAULT_QUEUE_MASK (1 << 0 | 1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define ADT7X10_CT_POLARITY (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define ADT7X10_INT_POLARITY (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ADT7X10_EVENT_MODE (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define ADT7X10_MODE_MASK (1 << 5 | 1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define ADT7X10_FULL (0 << 5 | 0 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define ADT7X10_PD (1 << 5 | 1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define ADT7X10_RESOLUTION (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * ADT7X10 masks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define ADT7X10_T13_VALUE_MASK 0xFFF8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define ADT7X10_T_HYST_MASK 0xF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /* straight from the datasheet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define ADT7X10_TEMP_MIN (-55000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define ADT7X10_TEMP_MAX 150000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* Each client has this additional data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct adt7x10_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) const struct adt7x10_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct device *hwmon_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct mutex update_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u8 config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u8 oldconfig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) bool valid; /* true if registers valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned long last_updated; /* In jiffies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) s16 temp[4]; /* Register values,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 0 = input
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 1 = high
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 2 = low
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 3 = critical */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u8 hyst; /* hysteresis offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int adt7x10_read_byte(struct device *dev, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct adt7x10_data *d = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return d->ops->read_byte(dev, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static int adt7x10_write_byte(struct device *dev, u8 reg, u8 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct adt7x10_data *d = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return d->ops->write_byte(dev, reg, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static int adt7x10_read_word(struct device *dev, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct adt7x10_data *d = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return d->ops->read_word(dev, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static int adt7x10_write_word(struct device *dev, u8 reg, u16 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct adt7x10_data *d = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return d->ops->write_word(dev, reg, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static const u8 ADT7X10_REG_TEMP[4] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ADT7X10_TEMPERATURE, /* input */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ADT7X10_T_ALARM_HIGH, /* high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ADT7X10_T_ALARM_LOW, /* low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ADT7X10_T_CRIT, /* critical */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static irqreturn_t adt7x10_irq_handler(int irq, void *private)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct device *dev = private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) status = adt7x10_read_byte(dev, ADT7X10_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (status < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (status & ADT7X10_STAT_T_HIGH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) sysfs_notify(&dev->kobj, NULL, "temp1_max_alarm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (status & ADT7X10_STAT_T_LOW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) sysfs_notify(&dev->kobj, NULL, "temp1_min_alarm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (status & ADT7X10_STAT_T_CRIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) sysfs_notify(&dev->kobj, NULL, "temp1_crit_alarm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int adt7x10_temp_ready(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int i, status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) for (i = 0; i < 6; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) status = adt7x10_read_byte(dev, ADT7X10_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (status < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (!(status & ADT7X10_STAT_NOT_RDY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) msleep(60);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static int adt7x10_update_temp(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) || !data->valid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) int temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) dev_dbg(dev, "Starting update\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) ret = adt7x10_temp_ready(dev); /* check for new value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) temp = adt7x10_read_word(dev, ADT7X10_REG_TEMP[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (temp < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ret = temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) dev_dbg(dev, "Failed to read value: reg %d, error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) ADT7X10_REG_TEMP[0], ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) data->temp[0] = temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) data->last_updated = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) data->valid = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) abort:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static int adt7x10_fill_cache(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) for (i = 1; i < ARRAY_SIZE(data->temp); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) ret = adt7x10_read_word(dev, ADT7X10_REG_TEMP[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) dev_dbg(dev, "Failed to read value: reg %d, error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) ADT7X10_REG_TEMP[i], ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) data->temp[i] = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ret = adt7x10_read_byte(dev, ADT7X10_T_HYST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) dev_dbg(dev, "Failed to read value: reg %d, error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) ADT7X10_T_HYST, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) data->hyst = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static s16 ADT7X10_TEMP_TO_REG(long temp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return DIV_ROUND_CLOSEST(clamp_val(temp, ADT7X10_TEMP_MIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) ADT7X10_TEMP_MAX) * 128, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static int ADT7X10_REG_TO_TEMP(struct adt7x10_data *data, s16 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* in 13 bit mode, bits 0-2 are status flags - mask them out */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (!(data->config & ADT7X10_RESOLUTION))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) reg &= ADT7X10_T13_VALUE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * temperature is stored in twos complement format, in steps of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * 1/128°C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return DIV_ROUND_CLOSEST(reg * 1000, 128);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /*-----------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /* sysfs attributes for hwmon */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static ssize_t adt7x10_temp_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct device_attribute *da, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (attr->index == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) ret = adt7x10_update_temp(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return sprintf(buf, "%d\n", ADT7X10_REG_TO_TEMP(data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) data->temp[attr->index]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static ssize_t adt7x10_temp_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct device_attribute *da,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) int nr = attr->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) long temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) ret = kstrtol(buf, 10, &temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) data->temp[nr] = ADT7X10_TEMP_TO_REG(temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) ret = adt7x10_write_word(dev, ADT7X10_REG_TEMP[nr], data->temp[nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) count = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) static ssize_t adt7x10_t_hyst_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct device_attribute *da, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) int nr = attr->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) int hyst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) hyst = (data->hyst & ADT7X10_T_HYST_MASK) * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * hysteresis is stored as a 4 bit offset in the device, convert it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * to an absolute value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (nr == 2) /* min has positive offset, others have negative */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) hyst = -hyst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return sprintf(buf, "%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) ADT7X10_REG_TO_TEMP(data, data->temp[nr]) - hyst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static ssize_t adt7x10_t_hyst_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct device_attribute *da,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int limit, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) long hyst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) ret = kstrtol(buf, 10, &hyst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) /* convert absolute hysteresis value to a 4 bit delta value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) limit = ADT7X10_REG_TO_TEMP(data, data->temp[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) hyst = clamp_val(hyst, ADT7X10_TEMP_MIN, ADT7X10_TEMP_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) data->hyst = clamp_val(DIV_ROUND_CLOSEST(limit - hyst, 1000),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 0, ADT7X10_T_HYST_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) ret = adt7x10_write_byte(dev, ADT7X10_T_HYST, data->hyst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) static ssize_t adt7x10_alarm_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct device_attribute *da, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ret = adt7x10_read_byte(dev, ADT7X10_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return sprintf(buf, "%d\n", !!(ret & attr->index));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static ssize_t name_show(struct device *dev, struct device_attribute *da,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return sprintf(buf, "%s\n", data->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static SENSOR_DEVICE_ATTR_RO(temp1_input, adt7x10_temp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static SENSOR_DEVICE_ATTR_RW(temp1_max, adt7x10_temp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) static SENSOR_DEVICE_ATTR_RW(temp1_min, adt7x10_temp, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) static SENSOR_DEVICE_ATTR_RW(temp1_crit, adt7x10_temp, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, adt7x10_t_hyst, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static SENSOR_DEVICE_ATTR_RO(temp1_min_hyst, adt7x10_t_hyst, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static SENSOR_DEVICE_ATTR_RO(temp1_crit_hyst, adt7x10_t_hyst, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, adt7x10_alarm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) ADT7X10_STAT_T_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, adt7x10_alarm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) ADT7X10_STAT_T_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, adt7x10_alarm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) ADT7X10_STAT_T_CRIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static DEVICE_ATTR_RO(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static struct attribute *adt7x10_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) &sensor_dev_attr_temp1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) &sensor_dev_attr_temp1_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) &sensor_dev_attr_temp1_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) &sensor_dev_attr_temp1_crit.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) &sensor_dev_attr_temp1_min_hyst.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) &sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static const struct attribute_group adt7x10_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) .attrs = adt7x10_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) int adt7x10_probe(struct device *dev, const char *name, int irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) const struct adt7x10_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) struct adt7x10_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) data->ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) data->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) dev_set_drvdata(dev, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) mutex_init(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) /* configure as specified */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) ret = adt7x10_read_byte(dev, ADT7X10_CONFIG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) dev_dbg(dev, "Can't read config? %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) data->oldconfig = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) * Set to 16 bit resolution, continous conversion and comparator mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) data->config = data->oldconfig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) data->config &= ~(ADT7X10_MODE_MASK | ADT7X10_CT_POLARITY |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) ADT7X10_INT_POLARITY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) data->config |= ADT7X10_FULL | ADT7X10_RESOLUTION | ADT7X10_EVENT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (data->config != data->oldconfig) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ret = adt7x10_write_byte(dev, ADT7X10_CONFIG, data->config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) dev_dbg(dev, "Config %02x\n", data->config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ret = adt7x10_fill_cache(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) goto exit_restore;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /* Register sysfs hooks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) ret = sysfs_create_group(&dev->kobj, &adt7x10_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) goto exit_restore;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) * The I2C device will already have it's own 'name' attribute, but for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) * the SPI device we need to register it. name will only be non NULL if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) * the device doesn't register the 'name' attribute on its own.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) ret = device_create_file(dev, &dev_attr_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) goto exit_remove;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) data->hwmon_dev = hwmon_device_register(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) if (IS_ERR(data->hwmon_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) ret = PTR_ERR(data->hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) goto exit_remove_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (irq > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) ret = request_threaded_irq(irq, NULL, adt7x10_irq_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) dev_name(dev), dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) goto exit_hwmon_device_unregister;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) exit_hwmon_device_unregister:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) hwmon_device_unregister(data->hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) exit_remove_name:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) device_remove_file(dev, &dev_attr_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) exit_remove:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) sysfs_remove_group(&dev->kobj, &adt7x10_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) exit_restore:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) adt7x10_write_byte(dev, ADT7X10_CONFIG, data->oldconfig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) EXPORT_SYMBOL_GPL(adt7x10_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) int adt7x10_remove(struct device *dev, int irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (irq > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) free_irq(irq, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) hwmon_device_unregister(data->hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (data->name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) device_remove_file(dev, &dev_attr_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) sysfs_remove_group(&dev->kobj, &adt7x10_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (data->oldconfig != data->config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) adt7x10_write_byte(dev, ADT7X10_CONFIG, data->oldconfig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) EXPORT_SYMBOL_GPL(adt7x10_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) static int adt7x10_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return adt7x10_write_byte(dev, ADT7X10_CONFIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) data->config | ADT7X10_PD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) static int adt7x10_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) struct adt7x10_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return adt7x10_write_byte(dev, ADT7X10_CONFIG, data->config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) SIMPLE_DEV_PM_OPS(adt7x10_dev_pm_ops, adt7x10_suspend, adt7x10_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) EXPORT_SYMBOL_GPL(adt7x10_dev_pm_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) #endif /* CONFIG_PM_SLEEP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) MODULE_AUTHOR("Hartmut Knaack");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) MODULE_DESCRIPTION("ADT7410/ADT7420, ADT7310/ADT7320 common code");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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