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-rw-r--r--drivers/hwmon/lm85.c1713
1 files changed, 1713 insertions, 0 deletions
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
new file mode 100644
index 0000000000..68c2100023
--- /dev/null
+++ b/drivers/hwmon/lm85.c
@@ -0,0 +1,1713 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * lm85.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
+ * Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
+ * Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
+ * Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
+ * Copyright (C) 2007--2014 Jean Delvare <jdelvare@suse.de>
+ *
+ * Chip details at <http://www.national.com/ds/LM/LM85.pdf>
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-vid.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/util_macros.h>
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
+
+enum chips {
+ lm85, lm96000,
+ adm1027, adt7463, adt7468,
+ emc6d100, emc6d102, emc6d103, emc6d103s
+};
+
+/* The LM85 registers */
+
+#define LM85_REG_IN(nr) (0x20 + (nr))
+#define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
+#define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
+
+#define LM85_REG_TEMP(nr) (0x25 + (nr))
+#define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
+#define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
+
+/* Fan speeds are LSB, MSB (2 bytes) */
+#define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
+#define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
+
+#define LM85_REG_PWM(nr) (0x30 + (nr))
+
+#define LM85_REG_COMPANY 0x3e
+#define LM85_REG_VERSTEP 0x3f
+
+#define ADT7468_REG_CFG5 0x7c
+#define ADT7468_OFF64 (1 << 0)
+#define ADT7468_HFPWM (1 << 1)
+#define IS_ADT7468_OFF64(data) \
+ ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
+#define IS_ADT7468_HFPWM(data) \
+ ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
+
+/* These are the recognized values for the above regs */
+#define LM85_COMPANY_NATIONAL 0x01
+#define LM85_COMPANY_ANALOG_DEV 0x41
+#define LM85_COMPANY_SMSC 0x5c
+#define LM85_VERSTEP_LM85C 0x60
+#define LM85_VERSTEP_LM85B 0x62
+#define LM85_VERSTEP_LM96000_1 0x68
+#define LM85_VERSTEP_LM96000_2 0x69
+#define LM85_VERSTEP_ADM1027 0x60
+#define LM85_VERSTEP_ADT7463 0x62
+#define LM85_VERSTEP_ADT7463C 0x6A
+#define LM85_VERSTEP_ADT7468_1 0x71
+#define LM85_VERSTEP_ADT7468_2 0x72
+#define LM85_VERSTEP_EMC6D100_A0 0x60
+#define LM85_VERSTEP_EMC6D100_A1 0x61
+#define LM85_VERSTEP_EMC6D102 0x65
+#define LM85_VERSTEP_EMC6D103_A0 0x68
+#define LM85_VERSTEP_EMC6D103_A1 0x69
+#define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
+
+#define LM85_REG_CONFIG 0x40
+
+#define LM85_REG_ALARM1 0x41
+#define LM85_REG_ALARM2 0x42
+
+#define LM85_REG_VID 0x43
+
+/* Automated FAN control */
+#define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
+#define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
+#define LM85_REG_AFAN_SPIKE1 0x62
+#define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
+#define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
+#define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
+#define LM85_REG_AFAN_HYST1 0x6d
+#define LM85_REG_AFAN_HYST2 0x6e
+
+#define ADM1027_REG_EXTEND_ADC1 0x76
+#define ADM1027_REG_EXTEND_ADC2 0x77
+
+#define EMC6D100_REG_ALARM3 0x7d
+/* IN5, IN6 and IN7 */
+#define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
+#define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
+#define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
+#define EMC6D102_REG_EXTEND_ADC1 0x85
+#define EMC6D102_REG_EXTEND_ADC2 0x86
+#define EMC6D102_REG_EXTEND_ADC3 0x87
+#define EMC6D102_REG_EXTEND_ADC4 0x88
+
+/*
+ * Conversions. Rounding and limit checking is only done on the TO_REG
+ * variants. Note that you should be a bit careful with which arguments
+ * these macros are called: arguments may be evaluated more than once.
+ */
+
+/* IN are scaled according to built-in resistors */
+static const int lm85_scaling[] = { /* .001 Volts */
+ 2500, 2250, 3300, 5000, 12000,
+ 3300, 1500, 1800 /*EMC6D100*/
+};
+#define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
+
+#define INS_TO_REG(n, val) \
+ SCALE(clamp_val(val, 0, 255 * lm85_scaling[n] / 192), \
+ lm85_scaling[n], 192)
+
+#define INSEXT_FROM_REG(n, val, ext) \
+ SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
+
+#define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
+
+/* FAN speed is measured using 90kHz clock */
+static inline u16 FAN_TO_REG(unsigned long val)
+{
+ if (!val)
+ return 0xffff;
+ return clamp_val(5400000 / val, 1, 0xfffe);
+}
+#define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
+ 5400000 / (val))
+
+/* Temperature is reported in .001 degC increments */
+#define TEMP_TO_REG(val) \
+ DIV_ROUND_CLOSEST(clamp_val((val), -127000, 127000), 1000)
+#define TEMPEXT_FROM_REG(val, ext) \
+ SCALE(((val) << 4) + (ext), 16, 1000)
+#define TEMP_FROM_REG(val) ((val) * 1000)
+
+#define PWM_TO_REG(val) clamp_val(val, 0, 255)
+#define PWM_FROM_REG(val) (val)
+
+/*
+ * ZONEs have the following parameters:
+ * Limit (low) temp, 1. degC
+ * Hysteresis (below limit), 1. degC (0-15)
+ * Range of speed control, .1 degC (2-80)
+ * Critical (high) temp, 1. degC
+ *
+ * FAN PWMs have the following parameters:
+ * Reference Zone, 1, 2, 3, etc.
+ * Spinup time, .05 sec
+ * PWM value at limit/low temp, 1 count
+ * PWM Frequency, 1. Hz
+ * PWM is Min or OFF below limit, flag
+ * Invert PWM output, flag
+ *
+ * Some chips filter the temp, others the fan.
+ * Filter constant (or disabled) .1 seconds
+ */
+
+/* These are the zone temperature range encodings in .001 degree C */
+static const int lm85_range_map[] = {
+ 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
+ 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
+};
+
+static int RANGE_TO_REG(long range)
+{
+ return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map));
+}
+#define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
+
+/* These are the PWM frequency encodings */
+static const int lm85_freq_map[] = { /* 1 Hz */
+ 10, 15, 23, 30, 38, 47, 61, 94
+};
+
+static const int lm96000_freq_map[] = { /* 1 Hz */
+ 10, 15, 23, 30, 38, 47, 61, 94,
+ 22500, 24000, 25700, 25700, 27700, 27700, 30000, 30000
+};
+
+static const int adm1027_freq_map[] = { /* 1 Hz */
+ 11, 15, 22, 29, 35, 44, 59, 88
+};
+
+static int FREQ_TO_REG(const int *map,
+ unsigned int map_size, unsigned long freq)
+{
+ return find_closest(freq, map, map_size);
+}
+
+static int FREQ_FROM_REG(const int *map, unsigned int map_size, u8 reg)
+{
+ return map[reg % map_size];
+}
+
+/*
+ * Since we can't use strings, I'm abusing these numbers
+ * to stand in for the following meanings:
+ * 1 -- PWM responds to Zone 1
+ * 2 -- PWM responds to Zone 2
+ * 3 -- PWM responds to Zone 3
+ * 23 -- PWM responds to the higher temp of Zone 2 or 3
+ * 123 -- PWM responds to highest of Zone 1, 2, or 3
+ * 0 -- PWM is always at 0% (ie, off)
+ * -1 -- PWM is always at 100%
+ * -2 -- PWM responds to manual control
+ */
+
+static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
+#define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
+
+static int ZONE_TO_REG(int zone)
+{
+ int i;
+
+ for (i = 0; i <= 7; ++i)
+ if (zone == lm85_zone_map[i])
+ break;
+ if (i > 7) /* Not found. */
+ i = 3; /* Always 100% */
+ return i << 5;
+}
+
+#define HYST_TO_REG(val) clamp_val(((val) + 500) / 1000, 0, 15)
+#define HYST_FROM_REG(val) ((val) * 1000)
+
+/*
+ * Chip sampling rates
+ *
+ * Some sensors are not updated more frequently than once per second
+ * so it doesn't make sense to read them more often than that.
+ * We cache the results and return the saved data if the driver
+ * is called again before a second has elapsed.
+ *
+ * Also, there is significant configuration data for this chip
+ * given the automatic PWM fan control that is possible. There
+ * are about 47 bytes of config data to only 22 bytes of actual
+ * readings. So, we keep the config data up to date in the cache
+ * when it is written and only sample it once every 1 *minute*
+ */
+#define LM85_DATA_INTERVAL (HZ + HZ / 2)
+#define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
+
+/*
+ * LM85 can automatically adjust fan speeds based on temperature
+ * This structure encapsulates an entire Zone config. There are
+ * three zones (one for each temperature input) on the lm85
+ */
+struct lm85_zone {
+ s8 limit; /* Low temp limit */
+ u8 hyst; /* Low limit hysteresis. (0-15) */
+ u8 range; /* Temp range, encoded */
+ s8 critical; /* "All fans ON" temp limit */
+ u8 max_desired; /*
+ * Actual "max" temperature specified. Preserved
+ * to prevent "drift" as other autofan control
+ * values change.
+ */
+};
+
+struct lm85_autofan {
+ u8 config; /* Register value */
+ u8 min_pwm; /* Minimum PWM value, encoded */
+ u8 min_off; /* Min PWM or OFF below "limit", flag */
+};
+
+/*
+ * For each registered chip, we need to keep some data in memory.
+ * The structure is dynamically allocated.
+ */
+struct lm85_data {
+ struct i2c_client *client;
+ const struct attribute_group *groups[6];
+ const int *freq_map;
+ unsigned int freq_map_size;
+
+ enum chips type;
+
+ bool has_vid5; /* true if VID5 is configured for ADT7463 or ADT7468 */
+
+ struct mutex update_lock;
+ bool valid; /* true if following fields are valid */
+ unsigned long last_reading; /* In jiffies */
+ unsigned long last_config; /* In jiffies */
+
+ u8 in[8]; /* Register value */
+ u8 in_max[8]; /* Register value */
+ u8 in_min[8]; /* Register value */
+ s8 temp[3]; /* Register value */
+ s8 temp_min[3]; /* Register value */
+ s8 temp_max[3]; /* Register value */
+ u16 fan[4]; /* Register value */
+ u16 fan_min[4]; /* Register value */
+ u8 pwm[3]; /* Register value */
+ u8 pwm_freq[3]; /* Register encoding */
+ u8 temp_ext[3]; /* Decoded values */
+ u8 in_ext[8]; /* Decoded values */
+ u8 vid; /* Register value */
+ u8 vrm; /* VRM version */
+ u32 alarms; /* Register encoding, combined */
+ u8 cfg5; /* Config Register 5 on ADT7468 */
+ struct lm85_autofan autofan[3];
+ struct lm85_zone zone[3];
+};
+
+static int lm85_read_value(struct i2c_client *client, u8 reg)
+{
+ int res;
+
+ /* What size location is it? */
+ switch (reg) {
+ case LM85_REG_FAN(0): /* Read WORD data */
+ case LM85_REG_FAN(1):
+ case LM85_REG_FAN(2):
+ case LM85_REG_FAN(3):
+ case LM85_REG_FAN_MIN(0):
+ case LM85_REG_FAN_MIN(1):
+ case LM85_REG_FAN_MIN(2):
+ case LM85_REG_FAN_MIN(3):
+ case LM85_REG_ALARM1: /* Read both bytes at once */
+ res = i2c_smbus_read_byte_data(client, reg) & 0xff;
+ res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
+ break;
+ default: /* Read BYTE data */
+ res = i2c_smbus_read_byte_data(client, reg);
+ break;
+ }
+
+ return res;
+}
+
+static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
+{
+ switch (reg) {
+ case LM85_REG_FAN(0): /* Write WORD data */
+ case LM85_REG_FAN(1):
+ case LM85_REG_FAN(2):
+ case LM85_REG_FAN(3):
+ case LM85_REG_FAN_MIN(0):
+ case LM85_REG_FAN_MIN(1):
+ case LM85_REG_FAN_MIN(2):
+ case LM85_REG_FAN_MIN(3):
+ /* NOTE: ALARM is read only, so not included here */
+ i2c_smbus_write_byte_data(client, reg, value & 0xff);
+ i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
+ break;
+ default: /* Write BYTE data */
+ i2c_smbus_write_byte_data(client, reg, value);
+ break;
+ }
+}
+
+static struct lm85_data *lm85_update_device(struct device *dev)
+{
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int i;
+
+ mutex_lock(&data->update_lock);
+
+ if (!data->valid ||
+ time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
+ /* Things that change quickly */
+ dev_dbg(&client->dev, "Reading sensor values\n");
+
+ /*
+ * Have to read extended bits first to "freeze" the
+ * more significant bits that are read later.
+ * There are 2 additional resolution bits per channel and we
+ * have room for 4, so we shift them to the left.
+ */
+ if (data->type == adm1027 || data->type == adt7463 ||
+ data->type == adt7468) {
+ int ext1 = lm85_read_value(client,
+ ADM1027_REG_EXTEND_ADC1);
+ int ext2 = lm85_read_value(client,
+ ADM1027_REG_EXTEND_ADC2);
+ int val = (ext1 << 8) + ext2;
+
+ for (i = 0; i <= 4; i++)
+ data->in_ext[i] =
+ ((val >> (i * 2)) & 0x03) << 2;
+
+ for (i = 0; i <= 2; i++)
+ data->temp_ext[i] =
+ (val >> ((i + 4) * 2)) & 0x0c;
+ }
+
+ data->vid = lm85_read_value(client, LM85_REG_VID);
+
+ for (i = 0; i <= 3; ++i) {
+ data->in[i] =
+ lm85_read_value(client, LM85_REG_IN(i));
+ data->fan[i] =
+ lm85_read_value(client, LM85_REG_FAN(i));
+ }
+
+ if (!data->has_vid5)
+ data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
+
+ if (data->type == adt7468)
+ data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
+
+ for (i = 0; i <= 2; ++i) {
+ data->temp[i] =
+ lm85_read_value(client, LM85_REG_TEMP(i));
+ data->pwm[i] =
+ lm85_read_value(client, LM85_REG_PWM(i));
+
+ if (IS_ADT7468_OFF64(data))
+ data->temp[i] -= 64;
+ }
+
+ data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
+
+ if (data->type == emc6d100) {
+ /* Three more voltage sensors */
+ for (i = 5; i <= 7; ++i) {
+ data->in[i] = lm85_read_value(client,
+ EMC6D100_REG_IN(i));
+ }
+ /* More alarm bits */
+ data->alarms |= lm85_read_value(client,
+ EMC6D100_REG_ALARM3) << 16;
+ } else if (data->type == emc6d102 || data->type == emc6d103 ||
+ data->type == emc6d103s) {
+ /*
+ * Have to read LSB bits after the MSB ones because
+ * the reading of the MSB bits has frozen the
+ * LSBs (backward from the ADM1027).
+ */
+ int ext1 = lm85_read_value(client,
+ EMC6D102_REG_EXTEND_ADC1);
+ int ext2 = lm85_read_value(client,
+ EMC6D102_REG_EXTEND_ADC2);
+ int ext3 = lm85_read_value(client,
+ EMC6D102_REG_EXTEND_ADC3);
+ int ext4 = lm85_read_value(client,
+ EMC6D102_REG_EXTEND_ADC4);
+ data->in_ext[0] = ext3 & 0x0f;
+ data->in_ext[1] = ext4 & 0x0f;
+ data->in_ext[2] = ext4 >> 4;
+ data->in_ext[3] = ext3 >> 4;
+ data->in_ext[4] = ext2 >> 4;
+
+ data->temp_ext[0] = ext1 & 0x0f;
+ data->temp_ext[1] = ext2 & 0x0f;
+ data->temp_ext[2] = ext1 >> 4;
+ }
+
+ data->last_reading = jiffies;
+ } /* last_reading */
+
+ if (!data->valid ||
+ time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
+ /* Things that don't change often */
+ dev_dbg(&client->dev, "Reading config values\n");
+
+ for (i = 0; i <= 3; ++i) {
+ data->in_min[i] =
+ lm85_read_value(client, LM85_REG_IN_MIN(i));
+ data->in_max[i] =
+ lm85_read_value(client, LM85_REG_IN_MAX(i));
+ data->fan_min[i] =
+ lm85_read_value(client, LM85_REG_FAN_MIN(i));
+ }
+
+ if (!data->has_vid5) {
+ data->in_min[4] = lm85_read_value(client,
+ LM85_REG_IN_MIN(4));
+ data->in_max[4] = lm85_read_value(client,
+ LM85_REG_IN_MAX(4));
+ }
+
+ if (data->type == emc6d100) {
+ for (i = 5; i <= 7; ++i) {
+ data->in_min[i] = lm85_read_value(client,
+ EMC6D100_REG_IN_MIN(i));
+ data->in_max[i] = lm85_read_value(client,
+ EMC6D100_REG_IN_MAX(i));
+ }
+ }
+
+ for (i = 0; i <= 2; ++i) {
+ int val;
+
+ data->temp_min[i] =
+ lm85_read_value(client, LM85_REG_TEMP_MIN(i));
+ data->temp_max[i] =
+ lm85_read_value(client, LM85_REG_TEMP_MAX(i));
+
+ data->autofan[i].config =
+ lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
+ val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
+ data->pwm_freq[i] = val % data->freq_map_size;
+ data->zone[i].range = val >> 4;
+ data->autofan[i].min_pwm =
+ lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
+ data->zone[i].limit =
+ lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
+ data->zone[i].critical =
+ lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
+
+ if (IS_ADT7468_OFF64(data)) {
+ data->temp_min[i] -= 64;
+ data->temp_max[i] -= 64;
+ data->zone[i].limit -= 64;
+ data->zone[i].critical -= 64;
+ }
+ }
+
+ if (data->type != emc6d103s) {
+ i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
+ data->autofan[0].min_off = (i & 0x20) != 0;
+ data->autofan[1].min_off = (i & 0x40) != 0;
+ data->autofan[2].min_off = (i & 0x80) != 0;
+
+ i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
+ data->zone[0].hyst = i >> 4;
+ data->zone[1].hyst = i & 0x0f;
+
+ i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
+ data->zone[2].hyst = i >> 4;
+ }
+
+ data->last_config = jiffies;
+ } /* last_config */
+
+ data->valid = true;
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
+/* 4 Fans */
+static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
+}
+
+static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
+}
+
+static ssize_t fan_min_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->fan_min[nr] = FAN_TO_REG(val);
+ lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
+static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
+static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
+static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
+static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2);
+static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2);
+static SENSOR_DEVICE_ATTR_RO(fan4_input, fan, 3);
+static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3);
+
+/* vid, vrm, alarms */
+
+static ssize_t cpu0_vid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct lm85_data *data = lm85_update_device(dev);
+ int vid;
+
+ if (data->has_vid5) {
+ /* 6-pin VID (VRM 10) */
+ vid = vid_from_reg(data->vid & 0x3f, data->vrm);
+ } else {
+ /* 5-pin VID (VRM 9) */
+ vid = vid_from_reg(data->vid & 0x1f, data->vrm);
+ }
+
+ return sprintf(buf, "%d\n", vid);
+}
+
+static DEVICE_ATTR_RO(cpu0_vid);
+
+static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct lm85_data *data = dev_get_drvdata(dev);
+ return sprintf(buf, "%ld\n", (long) data->vrm);
+}
+
+static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct lm85_data *data = dev_get_drvdata(dev);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ if (val > 255)
+ return -EINVAL;
+
+ data->vrm = val;
+ return count;
+}
+
+static DEVICE_ATTR_RW(vrm);
+
+static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%u\n", data->alarms);
+}
+
+static DEVICE_ATTR_RO(alarms);
+
+static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
+}
+
+static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
+static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
+static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
+static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
+static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8);
+static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 18);
+static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 16);
+static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 17);
+static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4);
+static SENSOR_DEVICE_ATTR_RO(temp1_fault, alarm, 14);
+static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 5);
+static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 6);
+static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 15);
+static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 10);
+static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 11);
+static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, 12);
+static SENSOR_DEVICE_ATTR_RO(fan4_alarm, alarm, 13);
+
+/* pwm */
+
+static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
+}
+
+static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->pwm[nr] = PWM_TO_REG(val);
+ lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t pwm_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ int pwm_zone, enable;
+
+ pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
+ switch (pwm_zone) {
+ case -1: /* PWM is always at 100% */
+ enable = 0;
+ break;
+ case 0: /* PWM is always at 0% */
+ case -2: /* PWM responds to manual control */
+ enable = 1;
+ break;
+ default: /* PWM in automatic mode */
+ enable = 2;
+ }
+ return sprintf(buf, "%d\n", enable);
+}
+
+static ssize_t pwm_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ u8 config;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ switch (val) {
+ case 0:
+ config = 3;
+ break;
+ case 1:
+ config = 7;
+ break;
+ case 2:
+ /*
+ * Here we have to choose arbitrarily one of the 5 possible
+ * configurations; I go for the safest
+ */
+ config = 6;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_lock(&data->update_lock);
+ data->autofan[nr].config = lm85_read_value(client,
+ LM85_REG_AFAN_CONFIG(nr));
+ data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
+ | (config << 5);
+ lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
+ data->autofan[nr].config);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t pwm_freq_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ int freq;
+
+ if (IS_ADT7468_HFPWM(data))
+ freq = 22500;
+ else
+ freq = FREQ_FROM_REG(data->freq_map, data->freq_map_size,
+ data->pwm_freq[nr]);
+
+ return sprintf(buf, "%d\n", freq);
+}
+
+static ssize_t pwm_freq_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ /*
+ * The ADT7468 has a special high-frequency PWM output mode,
+ * where all PWM outputs are driven by a 22.5 kHz clock.
+ * This might confuse the user, but there's not much we can do.
+ */
+ if (data->type == adt7468 && val >= 11300) { /* High freq. mode */
+ data->cfg5 &= ~ADT7468_HFPWM;
+ lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
+ } else { /* Low freq. mode */
+ data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map,
+ data->freq_map_size, val);
+ lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
+ (data->zone[nr].range << 4)
+ | data->pwm_freq[nr]);
+ if (data->type == adt7468) {
+ data->cfg5 |= ADT7468_HFPWM;
+ lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
+ }
+ }
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
+static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0);
+static SENSOR_DEVICE_ATTR_RW(pwm1_freq, pwm_freq, 0);
+static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
+static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1);
+static SENSOR_DEVICE_ATTR_RW(pwm2_freq, pwm_freq, 1);
+static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2);
+static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2);
+static SENSOR_DEVICE_ATTR_RW(pwm3_freq, pwm_freq, 2);
+
+/* Voltages */
+
+static ssize_t in_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
+ data->in_ext[nr]));
+}
+
+static ssize_t in_min_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
+}
+
+static ssize_t in_min_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->in_min[nr] = INS_TO_REG(nr, val);
+ lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t in_max_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
+}
+
+static ssize_t in_max_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->in_max[nr] = INS_TO_REG(nr, val);
+ lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0);
+static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0);
+static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0);
+static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1);
+static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
+static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
+static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2);
+static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
+static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
+static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3);
+static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
+static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
+static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4);
+static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
+static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
+static SENSOR_DEVICE_ATTR_RO(in5_input, in, 5);
+static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5);
+static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5);
+static SENSOR_DEVICE_ATTR_RO(in6_input, in, 6);
+static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6);
+static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6);
+static SENSOR_DEVICE_ATTR_RO(in7_input, in, 7);
+static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7);
+static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7);
+
+/* Temps */
+
+static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
+ data->temp_ext[nr]));
+}
+
+static ssize_t temp_min_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
+}
+
+static ssize_t temp_min_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ if (IS_ADT7468_OFF64(data))
+ val += 64;
+
+ mutex_lock(&data->update_lock);
+ data->temp_min[nr] = TEMP_TO_REG(val);
+ lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t temp_max_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
+}
+
+static ssize_t temp_max_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ if (IS_ADT7468_OFF64(data))
+ val += 64;
+
+ mutex_lock(&data->update_lock);
+ data->temp_max[nr] = TEMP_TO_REG(val);
+ lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
+static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
+static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
+
+/* Automatic PWM control */
+
+static ssize_t pwm_auto_channels_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
+}
+
+static ssize_t pwm_auto_channels_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
+ | ZONE_TO_REG(val);
+ lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
+ data->autofan[nr].config);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t pwm_auto_pwm_min_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
+}
+
+static ssize_t pwm_auto_pwm_min_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->autofan[nr].min_pwm = PWM_TO_REG(val);
+ lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
+ data->autofan[nr].min_pwm);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t pwm_auto_pwm_minctl_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", data->autofan[nr].min_off);
+}
+
+static ssize_t pwm_auto_pwm_minctl_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ u8 tmp;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->autofan[nr].min_off = val;
+ tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
+ tmp &= ~(0x20 << nr);
+ if (data->autofan[nr].min_off)
+ tmp |= 0x20 << nr;
+ lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(pwm1_auto_channels, pwm_auto_channels, 0);
+static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_min, pwm_auto_pwm_min, 0);
+static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_minctl, pwm_auto_pwm_minctl, 0);
+static SENSOR_DEVICE_ATTR_RW(pwm2_auto_channels, pwm_auto_channels, 1);
+static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_min, pwm_auto_pwm_min, 1);
+static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_minctl, pwm_auto_pwm_minctl, 1);
+static SENSOR_DEVICE_ATTR_RW(pwm3_auto_channels, pwm_auto_channels, 2);
+static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_min, pwm_auto_pwm_min, 2);
+static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_minctl, pwm_auto_pwm_minctl, 2);
+
+/* Temperature settings for automatic PWM control */
+
+static ssize_t temp_auto_temp_off_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
+ HYST_FROM_REG(data->zone[nr].hyst));
+}
+
+static ssize_t temp_auto_temp_off_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int min;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ min = TEMP_FROM_REG(data->zone[nr].limit);
+ data->zone[nr].hyst = HYST_TO_REG(min - val);
+ if (nr == 0 || nr == 1) {
+ lm85_write_value(client, LM85_REG_AFAN_HYST1,
+ (data->zone[0].hyst << 4)
+ | data->zone[1].hyst);
+ } else {
+ lm85_write_value(client, LM85_REG_AFAN_HYST2,
+ (data->zone[2].hyst << 4));
+ }
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t temp_auto_temp_min_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
+}
+
+static ssize_t temp_auto_temp_min_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->zone[nr].limit = TEMP_TO_REG(val);
+ lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
+ data->zone[nr].limit);
+
+/* Update temp_auto_max and temp_auto_range */
+ data->zone[nr].range = RANGE_TO_REG(
+ TEMP_FROM_REG(data->zone[nr].max_desired) -
+ TEMP_FROM_REG(data->zone[nr].limit));
+ lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
+ ((data->zone[nr].range & 0x0f) << 4)
+ | data->pwm_freq[nr]);
+
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t temp_auto_temp_max_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
+ RANGE_FROM_REG(data->zone[nr].range));
+}
+
+static ssize_t temp_auto_temp_max_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int min;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ min = TEMP_FROM_REG(data->zone[nr].limit);
+ data->zone[nr].max_desired = TEMP_TO_REG(val);
+ data->zone[nr].range = RANGE_TO_REG(
+ val - min);
+ lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
+ ((data->zone[nr].range & 0x0f) << 4)
+ | data->pwm_freq[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t temp_auto_temp_crit_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = lm85_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
+}
+
+static ssize_t temp_auto_temp_crit_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct lm85_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->zone[nr].critical = TEMP_TO_REG(val);
+ lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
+ data->zone[nr].critical);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_off, temp_auto_temp_off, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_min, temp_auto_temp_min, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_max, temp_auto_temp_max, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_crit, temp_auto_temp_crit, 0);
+static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_off, temp_auto_temp_off, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_min, temp_auto_temp_min, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_max, temp_auto_temp_max, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_crit, temp_auto_temp_crit, 1);
+static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_off, temp_auto_temp_off, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_min, temp_auto_temp_min, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_max, temp_auto_temp_max, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_crit, temp_auto_temp_crit, 2);
+
+static struct attribute *lm85_attributes[] = {
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_fan2_input.dev_attr.attr,
+ &sensor_dev_attr_fan3_input.dev_attr.attr,
+ &sensor_dev_attr_fan4_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_min.dev_attr.attr,
+ &sensor_dev_attr_fan2_min.dev_attr.attr,
+ &sensor_dev_attr_fan3_min.dev_attr.attr,
+ &sensor_dev_attr_fan4_min.dev_attr.attr,
+ &sensor_dev_attr_fan1_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan2_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan3_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan4_alarm.dev_attr.attr,
+
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ &sensor_dev_attr_pwm3.dev_attr.attr,
+ &sensor_dev_attr_pwm1_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm2_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm3_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm1_freq.dev_attr.attr,
+ &sensor_dev_attr_pwm2_freq.dev_attr.attr,
+ &sensor_dev_attr_pwm3_freq.dev_attr.attr,
+
+ &sensor_dev_attr_in0_input.dev_attr.attr,
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in3_input.dev_attr.attr,
+ &sensor_dev_attr_in0_min.dev_attr.attr,
+ &sensor_dev_attr_in1_min.dev_attr.attr,
+ &sensor_dev_attr_in2_min.dev_attr.attr,
+ &sensor_dev_attr_in3_min.dev_attr.attr,
+ &sensor_dev_attr_in0_max.dev_attr.attr,
+ &sensor_dev_attr_in1_max.dev_attr.attr,
+ &sensor_dev_attr_in2_max.dev_attr.attr,
+ &sensor_dev_attr_in3_max.dev_attr.attr,
+ &sensor_dev_attr_in0_alarm.dev_attr.attr,
+ &sensor_dev_attr_in1_alarm.dev_attr.attr,
+ &sensor_dev_attr_in2_alarm.dev_attr.attr,
+ &sensor_dev_attr_in3_alarm.dev_attr.attr,
+
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_fault.dev_attr.attr,
+ &sensor_dev_attr_temp3_fault.dev_attr.attr,
+
+ &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
+
+ &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
+ &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
+ &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
+
+ &dev_attr_vrm.attr,
+ &dev_attr_cpu0_vid.attr,
+ &dev_attr_alarms.attr,
+ NULL
+};
+
+static const struct attribute_group lm85_group = {
+ .attrs = lm85_attributes,
+};
+
+static struct attribute *lm85_attributes_minctl[] = {
+ &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm85_group_minctl = {
+ .attrs = lm85_attributes_minctl,
+};
+
+static struct attribute *lm85_attributes_temp_off[] = {
+ &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
+ &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
+ &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm85_group_temp_off = {
+ .attrs = lm85_attributes_temp_off,
+};
+
+static struct attribute *lm85_attributes_in4[] = {
+ &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_alarm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm85_group_in4 = {
+ .attrs = lm85_attributes_in4,
+};
+
+static struct attribute *lm85_attributes_in567[] = {
+ &sensor_dev_attr_in5_input.dev_attr.attr,
+ &sensor_dev_attr_in6_input.dev_attr.attr,
+ &sensor_dev_attr_in7_input.dev_attr.attr,
+ &sensor_dev_attr_in5_min.dev_attr.attr,
+ &sensor_dev_attr_in6_min.dev_attr.attr,
+ &sensor_dev_attr_in7_min.dev_attr.attr,
+ &sensor_dev_attr_in5_max.dev_attr.attr,
+ &sensor_dev_attr_in6_max.dev_attr.attr,
+ &sensor_dev_attr_in7_max.dev_attr.attr,
+ &sensor_dev_attr_in5_alarm.dev_attr.attr,
+ &sensor_dev_attr_in6_alarm.dev_attr.attr,
+ &sensor_dev_attr_in7_alarm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm85_group_in567 = {
+ .attrs = lm85_attributes_in567,
+};
+
+static void lm85_init_client(struct i2c_client *client)
+{
+ int value;
+
+ /* Start monitoring if needed */
+ value = lm85_read_value(client, LM85_REG_CONFIG);
+ if (!(value & 0x01)) {
+ dev_info(&client->dev, "Starting monitoring\n");
+ lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
+ }
+
+ /* Warn about unusual configuration bits */
+ if (value & 0x02)
+ dev_warn(&client->dev, "Device configuration is locked\n");
+ if (!(value & 0x04))
+ dev_warn(&client->dev, "Device is not ready\n");
+}
+
+static int lm85_is_fake(struct i2c_client *client)
+{
+ /*
+ * Differenciate between real LM96000 and Winbond WPCD377I. The latter
+ * emulate the former except that it has no hardware monitoring function
+ * so the readings are always 0.
+ */
+ int i;
+ u8 in_temp, fan;
+
+ for (i = 0; i < 8; i++) {
+ in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
+ fan = i2c_smbus_read_byte_data(client, 0x28 + i);
+ if (in_temp != 0x00 || fan != 0xff)
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ int address = client->addr;
+ const char *type_name = NULL;
+ int company, verstep;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+ /* We need to be able to do byte I/O */
+ return -ENODEV;
+ }
+
+ /* Determine the chip type */
+ company = lm85_read_value(client, LM85_REG_COMPANY);
+ verstep = lm85_read_value(client, LM85_REG_VERSTEP);
+
+ dev_dbg(&adapter->dev,
+ "Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
+ address, company, verstep);
+
+ if (company == LM85_COMPANY_NATIONAL) {
+ switch (verstep) {
+ case LM85_VERSTEP_LM85C:
+ type_name = "lm85c";
+ break;
+ case LM85_VERSTEP_LM85B:
+ type_name = "lm85b";
+ break;
+ case LM85_VERSTEP_LM96000_1:
+ case LM85_VERSTEP_LM96000_2:
+ /* Check for Winbond WPCD377I */
+ if (lm85_is_fake(client)) {
+ dev_dbg(&adapter->dev,
+ "Found Winbond WPCD377I, ignoring\n");
+ return -ENODEV;
+ }
+ type_name = "lm96000";
+ break;
+ }
+ } else if (company == LM85_COMPANY_ANALOG_DEV) {
+ switch (verstep) {
+ case LM85_VERSTEP_ADM1027:
+ type_name = "adm1027";
+ break;
+ case LM85_VERSTEP_ADT7463:
+ case LM85_VERSTEP_ADT7463C:
+ type_name = "adt7463";
+ break;
+ case LM85_VERSTEP_ADT7468_1:
+ case LM85_VERSTEP_ADT7468_2:
+ type_name = "adt7468";
+ break;
+ }
+ } else if (company == LM85_COMPANY_SMSC) {
+ switch (verstep) {
+ case LM85_VERSTEP_EMC6D100_A0:
+ case LM85_VERSTEP_EMC6D100_A1:
+ /* Note: we can't tell a '100 from a '101 */
+ type_name = "emc6d100";
+ break;
+ case LM85_VERSTEP_EMC6D102:
+ type_name = "emc6d102";
+ break;
+ case LM85_VERSTEP_EMC6D103_A0:
+ case LM85_VERSTEP_EMC6D103_A1:
+ type_name = "emc6d103";
+ break;
+ case LM85_VERSTEP_EMC6D103S:
+ type_name = "emc6d103s";
+ break;
+ }
+ }
+
+ if (!type_name)
+ return -ENODEV;
+
+ strscpy(info->type, type_name, I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static const struct i2c_device_id lm85_id[];
+
+static int lm85_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct lm85_data *data;
+ int idx = 0;
+
+ data = devm_kzalloc(dev, sizeof(struct lm85_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->client = client;
+ if (client->dev.of_node)
+ data->type = (uintptr_t)of_device_get_match_data(&client->dev);
+ else
+ data->type = i2c_match_id(lm85_id, client)->driver_data;
+ mutex_init(&data->update_lock);
+
+ /* Fill in the chip specific driver values */
+ switch (data->type) {
+ case adm1027:
+ case adt7463:
+ case adt7468:
+ case emc6d100:
+ case emc6d102:
+ case emc6d103:
+ case emc6d103s:
+ data->freq_map = adm1027_freq_map;
+ data->freq_map_size = ARRAY_SIZE(adm1027_freq_map);
+ break;
+ case lm96000:
+ data->freq_map = lm96000_freq_map;
+ data->freq_map_size = ARRAY_SIZE(lm96000_freq_map);
+ break;
+ default:
+ data->freq_map = lm85_freq_map;
+ data->freq_map_size = ARRAY_SIZE(lm85_freq_map);
+ }
+
+ /* Set the VRM version */
+ data->vrm = vid_which_vrm();
+
+ /* Initialize the LM85 chip */
+ lm85_init_client(client);
+
+ /* sysfs hooks */
+ data->groups[idx++] = &lm85_group;
+
+ /* minctl and temp_off exist on all chips except emc6d103s */
+ if (data->type != emc6d103s) {
+ data->groups[idx++] = &lm85_group_minctl;
+ data->groups[idx++] = &lm85_group_temp_off;
+ }
+
+ /*
+ * The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
+ * as a sixth digital VID input rather than an analog input.
+ */
+ if (data->type == adt7463 || data->type == adt7468) {
+ u8 vid = lm85_read_value(client, LM85_REG_VID);
+ if (vid & 0x80)
+ data->has_vid5 = true;
+ }
+
+ if (!data->has_vid5)
+ data->groups[idx++] = &lm85_group_in4;
+
+ /* The EMC6D100 has 3 additional voltage inputs */
+ if (data->type == emc6d100)
+ data->groups[idx++] = &lm85_group_in567;
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data, data->groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id lm85_id[] = {
+ { "adm1027", adm1027 },
+ { "adt7463", adt7463 },
+ { "adt7468", adt7468 },
+ { "lm85", lm85 },
+ { "lm85b", lm85 },
+ { "lm85c", lm85 },
+ { "lm96000", lm96000 },
+ { "emc6d100", emc6d100 },
+ { "emc6d101", emc6d100 },
+ { "emc6d102", emc6d102 },
+ { "emc6d103", emc6d103 },
+ { "emc6d103s", emc6d103s },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm85_id);
+
+static const struct of_device_id __maybe_unused lm85_of_match[] = {
+ {
+ .compatible = "adi,adm1027",
+ .data = (void *)adm1027
+ },
+ {
+ .compatible = "adi,adt7463",
+ .data = (void *)adt7463
+ },
+ {
+ .compatible = "adi,adt7468",
+ .data = (void *)adt7468
+ },
+ {
+ .compatible = "national,lm85",
+ .data = (void *)lm85
+ },
+ {
+ .compatible = "national,lm85b",
+ .data = (void *)lm85
+ },
+ {
+ .compatible = "national,lm85c",
+ .data = (void *)lm85
+ },
+ {
+ .compatible = "ti,lm96000",
+ .data = (void *)lm96000
+ },
+ {
+ .compatible = "smsc,emc6d100",
+ .data = (void *)emc6d100
+ },
+ {
+ .compatible = "smsc,emc6d101",
+ .data = (void *)emc6d100
+ },
+ {
+ .compatible = "smsc,emc6d102",
+ .data = (void *)emc6d102
+ },
+ {
+ .compatible = "smsc,emc6d103",
+ .data = (void *)emc6d103
+ },
+ {
+ .compatible = "smsc,emc6d103s",
+ .data = (void *)emc6d103s
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, lm85_of_match);
+
+static struct i2c_driver lm85_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "lm85",
+ .of_match_table = of_match_ptr(lm85_of_match),
+ },
+ .probe = lm85_probe,
+ .id_table = lm85_id,
+ .detect = lm85_detect,
+ .address_list = normal_i2c,
+};
+
+module_i2c_driver(lm85_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
+ "Margit Schubert-While <margitsw@t-online.de>, "
+ "Justin Thiessen <jthiessen@penguincomputing.com>");
+MODULE_DESCRIPTION("LM85-B, LM85-C driver");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 12:43:56 +0000