^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) * emc6w201.c - Hardware monitoring driver for the SMSC EMC6W201
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2011 Jean Delvare <jdelvare@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/hwmon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/hwmon-sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Addresses to scan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * The EMC6W201 registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define EMC6W201_REG_IN(nr) (0x20 + (nr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define EMC6W201_REG_TEMP(nr) (0x26 + (nr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define EMC6W201_REG_FAN(nr) (0x2C + (nr) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define EMC6W201_REG_COMPANY 0x3E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define EMC6W201_REG_VERSTEP 0x3F
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define EMC6W201_REG_CONFIG 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define EMC6W201_REG_IN_LOW(nr) (0x4A + (nr) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define EMC6W201_REG_IN_HIGH(nr) (0x4B + (nr) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define EMC6W201_REG_TEMP_LOW(nr) (0x56 + (nr) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define EMC6W201_REG_TEMP_HIGH(nr) (0x57 + (nr) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define EMC6W201_REG_FAN_MIN(nr) (0x62 + (nr) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) enum subfeature { input, min, max };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * Per-device data
^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) struct emc6w201_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct mutex update_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) char valid; /* zero until following fields are valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) unsigned long last_updated; /* in jiffies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* registers values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u8 in[3][6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) s8 temp[3][6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u16 fan[2][5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * Combine LSB and MSB registers in a single value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Locking: must be called with data->update_lock held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static u16 emc6w201_read16(struct i2c_client *client, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int lsb, msb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) lsb = i2c_smbus_read_byte_data(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) msb = i2c_smbus_read_byte_data(client, reg + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (unlikely(lsb < 0 || msb < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 16, "read", reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return 0xFFFF; /* Arbitrary value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return (msb << 8) | lsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * Write 16-bit value to LSB and MSB registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Locking: must be called with data->update_lock held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int emc6w201_write16(struct i2c_client *client, u8 reg, u16 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) err = i2c_smbus_write_byte_data(client, reg, val & 0xff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (likely(!err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) err = i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (unlikely(err < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) 16, "write", reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* Read 8-bit value from register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static u8 emc6w201_read8(struct i2c_client *client, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) val = i2c_smbus_read_byte_data(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (unlikely(val < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 8, "read", reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return 0x00; /* Arbitrary value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* Write 8-bit value to register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static int emc6w201_write8(struct i2c_client *client, u8 reg, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) err = i2c_smbus_write_byte_data(client, reg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (unlikely(err < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 8, "write", reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return err;
^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 struct emc6w201_data *emc6w201_update_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct emc6w201_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) for (nr = 0; nr < 6; nr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) data->in[input][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) emc6w201_read8(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) EMC6W201_REG_IN(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) data->in[min][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) emc6w201_read8(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) EMC6W201_REG_IN_LOW(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) data->in[max][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) emc6w201_read8(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) EMC6W201_REG_IN_HIGH(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) for (nr = 0; nr < 6; nr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) data->temp[input][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) emc6w201_read8(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) EMC6W201_REG_TEMP(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) data->temp[min][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) emc6w201_read8(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) EMC6W201_REG_TEMP_LOW(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) data->temp[max][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) emc6w201_read8(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) EMC6W201_REG_TEMP_HIGH(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) for (nr = 0; nr < 5; nr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) data->fan[input][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) emc6w201_read16(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) EMC6W201_REG_FAN(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) data->fan[min][nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) emc6w201_read16(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) EMC6W201_REG_FAN_MIN(nr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) data->last_updated = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) data->valid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * Sysfs callback functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static const s16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static ssize_t in_show(struct device *dev, struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct emc6w201_data *data = emc6w201_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) int sf = to_sensor_dev_attr_2(devattr)->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) int nr = to_sensor_dev_attr_2(devattr)->nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return sprintf(buf, "%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) (unsigned)data->in[sf][nr] * nominal_mv[nr] / 0xC0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static ssize_t in_store(struct device *dev, struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct emc6w201_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) int sf = to_sensor_dev_attr_2(devattr)->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int nr = to_sensor_dev_attr_2(devattr)->nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u8 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) err = kstrtol(buf, 10, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) val = clamp_val(val, 0, 255 * nominal_mv[nr] / 192);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) val = DIV_ROUND_CLOSEST(val * 192, nominal_mv[nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) reg = (sf == min) ? EMC6W201_REG_IN_LOW(nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) : EMC6W201_REG_IN_HIGH(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) data->in[sf][nr] = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) err = emc6w201_write8(client, reg, data->in[sf][nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) return err < 0 ? err : count;
^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) static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct emc6w201_data *data = emc6w201_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) int sf = to_sensor_dev_attr_2(devattr)->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) int nr = to_sensor_dev_attr_2(devattr)->nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return sprintf(buf, "%d\n", (int)data->temp[sf][nr] * 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static ssize_t temp_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct device_attribute *devattr, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct emc6w201_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) int sf = to_sensor_dev_attr_2(devattr)->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) int nr = to_sensor_dev_attr_2(devattr)->nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) u8 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) err = kstrtol(buf, 10, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) val = clamp_val(val, -127000, 127000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) val = DIV_ROUND_CLOSEST(val, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) reg = (sf == min) ? EMC6W201_REG_TEMP_LOW(nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) : EMC6W201_REG_TEMP_HIGH(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) data->temp[sf][nr] = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) err = emc6w201_write8(client, reg, data->temp[sf][nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return err < 0 ? err : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static ssize_t fan_show(struct device *dev, struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct emc6w201_data *data = emc6w201_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int sf = to_sensor_dev_attr_2(devattr)->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) int nr = to_sensor_dev_attr_2(devattr)->nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) unsigned rpm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (data->fan[sf][nr] == 0 || data->fan[sf][nr] == 0xFFFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) rpm = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) rpm = 5400000U / data->fan[sf][nr];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return sprintf(buf, "%u\n", rpm);
^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) static ssize_t fan_store(struct device *dev, struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct emc6w201_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) int sf = to_sensor_dev_attr_2(devattr)->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) int nr = to_sensor_dev_attr_2(devattr)->nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) err = kstrtoul(buf, 10, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (val == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) val = 0xFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) val = DIV_ROUND_CLOSEST(5400000U, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) val = clamp_val(val, 0, 0xFFFE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) data->fan[sf][nr] = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) err = emc6w201_write16(client, EMC6W201_REG_FAN_MIN(nr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) data->fan[sf][nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) return err < 0 ? err : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, 0, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, 0, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, 0, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, 1, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static SENSOR_DEVICE_ATTR_2_RW(in1_min, in, 1, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) static SENSOR_DEVICE_ATTR_2_RW(in1_max, in, 1, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, 2, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, 2, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, 2, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, 3, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, 3, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, 3, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, 4, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, 4, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, 4, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static SENSOR_DEVICE_ATTR_2_RO(in5_input, in, 5, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static SENSOR_DEVICE_ATTR_2_RW(in5_min, in, 5, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static SENSOR_DEVICE_ATTR_2_RW(in5_max, in, 5, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, 0, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 1, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, 1, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 1, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 2, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, 2, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 2, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static SENSOR_DEVICE_ATTR_2_RO(temp4_input, temp, 3, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static SENSOR_DEVICE_ATTR_2_RW(temp4_min, temp, 3, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 3, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) static SENSOR_DEVICE_ATTR_2_RO(temp5_input, temp, 4, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static SENSOR_DEVICE_ATTR_2_RW(temp5_min, temp, 4, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 4, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static SENSOR_DEVICE_ATTR_2_RO(temp6_input, temp, 5, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static SENSOR_DEVICE_ATTR_2_RW(temp6_min, temp, 5, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static SENSOR_DEVICE_ATTR_2_RW(temp6_max, temp, 5, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static SENSOR_DEVICE_ATTR_2_RO(fan1_input, fan, 0, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan, 0, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) static SENSOR_DEVICE_ATTR_2_RO(fan2_input, fan, 1, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan, 1, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static SENSOR_DEVICE_ATTR_2_RO(fan3_input, fan, 2, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static SENSOR_DEVICE_ATTR_2_RW(fan3_min, fan, 2, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static SENSOR_DEVICE_ATTR_2_RO(fan4_input, fan, 3, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) static SENSOR_DEVICE_ATTR_2_RW(fan4_min, fan, 3, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) static SENSOR_DEVICE_ATTR_2_RO(fan5_input, fan, 4, input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static SENSOR_DEVICE_ATTR_2_RW(fan5_min, fan, 4, min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static struct attribute *emc6w201_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) &sensor_dev_attr_in0_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) &sensor_dev_attr_in0_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) &sensor_dev_attr_in0_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) &sensor_dev_attr_in1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) &sensor_dev_attr_in1_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) &sensor_dev_attr_in1_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) &sensor_dev_attr_in2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) &sensor_dev_attr_in2_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) &sensor_dev_attr_in2_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) &sensor_dev_attr_in3_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) &sensor_dev_attr_in3_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) &sensor_dev_attr_in3_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) &sensor_dev_attr_in4_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) &sensor_dev_attr_in4_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) &sensor_dev_attr_in4_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) &sensor_dev_attr_in5_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) &sensor_dev_attr_in5_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) &sensor_dev_attr_in5_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) &sensor_dev_attr_temp1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) &sensor_dev_attr_temp1_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) &sensor_dev_attr_temp1_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) &sensor_dev_attr_temp2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) &sensor_dev_attr_temp2_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) &sensor_dev_attr_temp2_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) &sensor_dev_attr_temp3_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) &sensor_dev_attr_temp3_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) &sensor_dev_attr_temp3_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) &sensor_dev_attr_temp4_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) &sensor_dev_attr_temp4_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) &sensor_dev_attr_temp4_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) &sensor_dev_attr_temp5_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) &sensor_dev_attr_temp5_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) &sensor_dev_attr_temp5_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) &sensor_dev_attr_temp6_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) &sensor_dev_attr_temp6_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) &sensor_dev_attr_temp6_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) &sensor_dev_attr_fan1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) &sensor_dev_attr_fan1_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) &sensor_dev_attr_fan2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) &sensor_dev_attr_fan2_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) &sensor_dev_attr_fan3_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) &sensor_dev_attr_fan3_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) &sensor_dev_attr_fan4_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) &sensor_dev_attr_fan4_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) &sensor_dev_attr_fan5_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) &sensor_dev_attr_fan5_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) ATTRIBUTE_GROUPS(emc6w201);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * Driver interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) /* Return 0 if detection is successful, -ENODEV otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) static int emc6w201_detect(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) struct i2c_board_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) struct i2c_adapter *adapter = client->adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) int company, verstep, config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) /* Identification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) company = i2c_smbus_read_byte_data(client, EMC6W201_REG_COMPANY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (company != 0x5C)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) verstep = i2c_smbus_read_byte_data(client, EMC6W201_REG_VERSTEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (verstep < 0 || (verstep & 0xF0) != 0xB0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if ((verstep & 0x0F) > 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) dev_dbg(&client->dev, "Unknown EMC6W201 stepping %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) verstep & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) /* Check configuration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) config = i2c_smbus_read_byte_data(client, EMC6W201_REG_CONFIG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (config < 0 || (config & 0xF4) != 0x04)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (!(config & 0x01)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) dev_err(&client->dev, "Monitoring not enabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) strlcpy(info->type, "emc6w201", I2C_NAME_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) static int emc6w201_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) struct emc6w201_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct device *hwmon_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) data = devm_kzalloc(dev, sizeof(struct emc6w201_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) mutex_init(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) emc6w201_groups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return PTR_ERR_OR_ZERO(hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) static const struct i2c_device_id emc6w201_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) { "emc6w201", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) MODULE_DEVICE_TABLE(i2c, emc6w201_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) static struct i2c_driver emc6w201_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) .class = I2C_CLASS_HWMON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) .name = "emc6w201",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) .probe_new = emc6w201_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) .id_table = emc6w201_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) .detect = emc6w201_detect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) .address_list = normal_i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) module_i2c_driver(emc6w201_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) MODULE_DESCRIPTION("SMSC EMC6W201 hardware monitoring driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags