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-rw-r--r--drivers/hwmon/adm1031.c1081
1 files changed, 1081 insertions, 0 deletions
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c
new file mode 100644
index 000000000..b42797bcb
--- /dev/null
+++ b/drivers/hwmon/adm1031.c
@@ -0,0 +1,1081 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * adm1031.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ * Based on lm75.c and lm85.c
+ * Supports adm1030 / adm1031
+ * Copyright (C) 2004 Alexandre d'Alton <alex@alexdalton.org>
+ * Reworked by Jean Delvare <jdelvare@suse.de>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+
+/* Following macros takes channel parameter starting from 0 to 2 */
+#define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr))
+#define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr))
+#define ADM1031_REG_PWM (0x22)
+#define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr))
+#define ADM1031_REG_FAN_FILTER (0x23)
+
+#define ADM1031_REG_TEMP_OFFSET(nr) (0x0d + (nr))
+#define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4 * (nr))
+#define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4 * (nr))
+#define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4 * (nr))
+
+#define ADM1031_REG_TEMP(nr) (0x0a + (nr))
+#define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
+
+#define ADM1031_REG_STATUS(nr) (0x2 + (nr))
+
+#define ADM1031_REG_CONF1 0x00
+#define ADM1031_REG_CONF2 0x01
+#define ADM1031_REG_EXT_TEMP 0x06
+
+#define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */
+#define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */
+#define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */
+
+#define ADM1031_CONF2_PWM1_ENABLE 0x01
+#define ADM1031_CONF2_PWM2_ENABLE 0x02
+#define ADM1031_CONF2_TACH1_ENABLE 0x04
+#define ADM1031_CONF2_TACH2_ENABLE 0x08
+#define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan))
+
+#define ADM1031_UPDATE_RATE_MASK 0x1c
+#define ADM1031_UPDATE_RATE_SHIFT 2
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
+
+enum chips { adm1030, adm1031 };
+
+typedef u8 auto_chan_table_t[8][2];
+
+/* Each client has this additional data */
+struct adm1031_data {
+ struct i2c_client *client;
+ const struct attribute_group *groups[3];
+ struct mutex update_lock;
+ int chip_type;
+ bool valid; /* true if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+ unsigned int update_interval; /* In milliseconds */
+ /*
+ * The chan_select_table contains the possible configurations for
+ * auto fan control.
+ */
+ const auto_chan_table_t *chan_select_table;
+ u16 alarm;
+ u8 conf1;
+ u8 conf2;
+ u8 fan[2];
+ u8 fan_div[2];
+ u8 fan_min[2];
+ u8 pwm[2];
+ u8 old_pwm[2];
+ s8 temp[3];
+ u8 ext_temp[3];
+ u8 auto_temp[3];
+ u8 auto_temp_min[3];
+ u8 auto_temp_off[3];
+ u8 auto_temp_max[3];
+ s8 temp_offset[3];
+ s8 temp_min[3];
+ s8 temp_max[3];
+ s8 temp_crit[3];
+};
+
+static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static inline int
+adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int value)
+{
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static struct adm1031_data *adm1031_update_device(struct device *dev)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long next_update;
+ int chan;
+
+ mutex_lock(&data->update_lock);
+
+ next_update = data->last_updated
+ + msecs_to_jiffies(data->update_interval);
+ if (time_after(jiffies, next_update) || !data->valid) {
+
+ dev_dbg(&client->dev, "Starting adm1031 update\n");
+ for (chan = 0;
+ chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) {
+ u8 oldh, newh;
+
+ oldh =
+ adm1031_read_value(client, ADM1031_REG_TEMP(chan));
+ data->ext_temp[chan] =
+ adm1031_read_value(client, ADM1031_REG_EXT_TEMP);
+ newh =
+ adm1031_read_value(client, ADM1031_REG_TEMP(chan));
+ if (newh != oldh) {
+ data->ext_temp[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_EXT_TEMP);
+#ifdef DEBUG
+ oldh =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP(chan));
+
+ /* oldh is actually newer */
+ if (newh != oldh)
+ dev_warn(&client->dev,
+ "Remote temperature may be wrong.\n");
+#endif
+ }
+ data->temp[chan] = newh;
+
+ data->temp_offset[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_OFFSET(chan));
+ data->temp_min[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_MIN(chan));
+ data->temp_max[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_MAX(chan));
+ data->temp_crit[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_CRIT(chan));
+ data->auto_temp[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_AUTO_TEMP(chan));
+
+ }
+
+ data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1);
+ data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
+
+ data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
+ | (adm1031_read_value(client, ADM1031_REG_STATUS(1)) << 8);
+ if (data->chip_type == adm1030)
+ data->alarm &= 0xc0ff;
+
+ for (chan = 0; chan < (data->chip_type == adm1030 ? 1 : 2);
+ chan++) {
+ data->fan_div[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_FAN_DIV(chan));
+ data->fan_min[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_FAN_MIN(chan));
+ data->fan[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_FAN_SPEED(chan));
+ data->pwm[chan] =
+ (adm1031_read_value(client,
+ ADM1031_REG_PWM) >> (4 * chan)) & 0x0f;
+ }
+ data->last_updated = jiffies;
+ data->valid = true;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
+#define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \
+ ((val + 500) / 1000)))
+
+#define TEMP_FROM_REG(val) ((val) * 1000)
+
+#define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125)
+
+#define TEMP_OFFSET_TO_REG(val) (TEMP_TO_REG(val) & 0x8f)
+#define TEMP_OFFSET_FROM_REG(val) TEMP_FROM_REG((val) < 0 ? \
+ (val) | 0x70 : (val))
+
+#define FAN_FROM_REG(reg, div) ((reg) ? \
+ (11250 * 60) / ((reg) * (div)) : 0)
+
+static int FAN_TO_REG(int reg, int div)
+{
+ int tmp;
+ tmp = FAN_FROM_REG(clamp_val(reg, 0, 65535), div);
+ return tmp > 255 ? 255 : tmp;
+}
+
+#define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6))
+
+#define PWM_TO_REG(val) (clamp_val((val), 0, 255) >> 4)
+#define PWM_FROM_REG(val) ((val) << 4)
+
+#define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7)
+#define FAN_CHAN_TO_REG(val, reg) \
+ (((reg) & 0x1F) | (((val) << 5) & 0xe0))
+
+#define AUTO_TEMP_MIN_TO_REG(val, reg) \
+ ((((val) / 500) & 0xf8) | ((reg) & 0x7))
+#define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1 << ((reg) & 0x7)))
+#define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2))
+
+#define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2)
+
+#define AUTO_TEMP_OFF_FROM_REG(reg) \
+ (AUTO_TEMP_MIN_FROM_REG(reg) - 5000)
+
+#define AUTO_TEMP_MAX_FROM_REG(reg) \
+ (AUTO_TEMP_RANGE_FROM_REG(reg) + \
+ AUTO_TEMP_MIN_FROM_REG(reg))
+
+static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm)
+{
+ int ret;
+ int range = ((val - AUTO_TEMP_MIN_FROM_REG(reg)) * 10) / (16 - pwm);
+
+ ret = ((reg & 0xf8) |
+ (range < 10000 ? 0 :
+ range < 20000 ? 1 :
+ range < 40000 ? 2 : range < 80000 ? 3 : 4));
+ return ret;
+}
+
+/* FAN auto control */
+#define GET_FAN_AUTO_BITFIELD(data, idx) \
+ (*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx % 2]
+
+/*
+ * The tables below contains the possible values for the auto fan
+ * control bitfields. the index in the table is the register value.
+ * MSb is the auto fan control enable bit, so the four first entries
+ * in the table disables auto fan control when both bitfields are zero.
+ */
+static const auto_chan_table_t auto_channel_select_table_adm1031 = {
+ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
+ { 2 /* 0b010 */ , 4 /* 0b100 */ },
+ { 2 /* 0b010 */ , 2 /* 0b010 */ },
+ { 4 /* 0b100 */ , 4 /* 0b100 */ },
+ { 7 /* 0b111 */ , 7 /* 0b111 */ },
+};
+
+static const auto_chan_table_t auto_channel_select_table_adm1030 = {
+ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
+ { 2 /* 0b10 */ , 0 },
+ { 0xff /* invalid */ , 0 },
+ { 0xff /* invalid */ , 0 },
+ { 3 /* 0b11 */ , 0 },
+};
+
+/*
+ * That function checks if a bitfield is valid and returns the other bitfield
+ * nearest match if no exact match where found.
+ */
+static int
+get_fan_auto_nearest(struct adm1031_data *data, int chan, u8 val, u8 reg)
+{
+ int i;
+ int first_match = -1, exact_match = -1;
+ u8 other_reg_val =
+ (*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1];
+
+ if (val == 0)
+ return 0;
+
+ for (i = 0; i < 8; i++) {
+ if ((val == (*data->chan_select_table)[i][chan]) &&
+ ((*data->chan_select_table)[i][chan ? 0 : 1] ==
+ other_reg_val)) {
+ /* We found an exact match */
+ exact_match = i;
+ break;
+ } else if (val == (*data->chan_select_table)[i][chan] &&
+ first_match == -1) {
+ /*
+ * Save the first match in case of an exact match has
+ * not been found
+ */
+ first_match = i;
+ }
+ }
+
+ if (exact_match >= 0)
+ return exact_match;
+ else if (first_match >= 0)
+ return first_match;
+
+ return -EINVAL;
+}
+
+static ssize_t fan_auto_channel_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr));
+}
+
+static ssize_t
+fan_auto_channel_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ u8 reg;
+ int ret;
+ u8 old_fan_mode;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ old_fan_mode = data->conf1;
+
+ mutex_lock(&data->update_lock);
+
+ ret = get_fan_auto_nearest(data, nr, val, data->conf1);
+ if (ret < 0) {
+ mutex_unlock(&data->update_lock);
+ return ret;
+ }
+ reg = ret;
+ data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
+ if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) ^
+ (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) {
+ if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
+ /*
+ * Switch to Auto Fan Mode
+ * Save PWM registers
+ * Set PWM registers to 33% Both
+ */
+ data->old_pwm[0] = data->pwm[0];
+ data->old_pwm[1] = data->pwm[1];
+ adm1031_write_value(client, ADM1031_REG_PWM, 0x55);
+ } else {
+ /* Switch to Manual Mode */
+ data->pwm[0] = data->old_pwm[0];
+ data->pwm[1] = data->old_pwm[1];
+ /* Restore PWM registers */
+ adm1031_write_value(client, ADM1031_REG_PWM,
+ data->pwm[0] | (data->pwm[1] << 4));
+ }
+ }
+ data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
+ adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(auto_fan1_channel, fan_auto_channel, 0);
+static SENSOR_DEVICE_ATTR_RW(auto_fan2_channel, fan_auto_channel, 1);
+
+/* Auto Temps */
+static ssize_t auto_temp_off_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n",
+ AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr]));
+}
+static ssize_t auto_temp_min_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n",
+ AUTO_TEMP_MIN_FROM_REG(data->auto_temp[nr]));
+}
+static ssize_t
+auto_temp_min_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ val = clamp_val(val, 0, 127000);
+ mutex_lock(&data->update_lock);
+ data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]);
+ adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
+ data->auto_temp[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+static ssize_t auto_temp_max_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n",
+ AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr]));
+}
+static ssize_t
+auto_temp_max_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ val = clamp_val(val, 0, 127000);
+ mutex_lock(&data->update_lock);
+ data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr],
+ data->pwm[nr]);
+ adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
+ data->temp_max[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(auto_temp1_off, auto_temp_off, 0);
+static SENSOR_DEVICE_ATTR_RW(auto_temp1_min, auto_temp_min, 0);
+static SENSOR_DEVICE_ATTR_RW(auto_temp1_max, auto_temp_max, 0);
+static SENSOR_DEVICE_ATTR_RO(auto_temp2_off, auto_temp_off, 1);
+static SENSOR_DEVICE_ATTR_RW(auto_temp2_min, auto_temp_min, 1);
+static SENSOR_DEVICE_ATTR_RW(auto_temp2_max, auto_temp_max, 1);
+static SENSOR_DEVICE_ATTR_RO(auto_temp3_off, auto_temp_off, 2);
+static SENSOR_DEVICE_ATTR_RW(auto_temp3_min, auto_temp_min, 2);
+static SENSOR_DEVICE_ATTR_RW(auto_temp3_max, auto_temp_max, 2);
+
+/* pwm */
+static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_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)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret, reg;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ mutex_lock(&data->update_lock);
+ if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
+ (((val>>4) & 0xf) != 5)) {
+ /* In automatic mode, the only PWM accepted is 33% */
+ mutex_unlock(&data->update_lock);
+ return -EINVAL;
+ }
+ data->pwm[nr] = PWM_TO_REG(val);
+ reg = adm1031_read_value(client, ADM1031_REG_PWM);
+ adm1031_write_value(client, ADM1031_REG_PWM,
+ nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf)
+ : (data->pwm[nr] & 0xf) | (reg & 0xf0));
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
+static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
+static SENSOR_DEVICE_ATTR_RW(auto_fan1_min_pwm, pwm, 0);
+static SENSOR_DEVICE_ATTR_RW(auto_fan2_min_pwm, pwm, 1);
+
+/* Fans */
+
+/*
+ * That function checks the cases where the fan reading is not
+ * relevant. It is used to provide 0 as fan reading when the fan is
+ * not supposed to run
+ */
+static int trust_fan_readings(struct adm1031_data *data, int chan)
+{
+ int res = 0;
+
+ if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
+ switch (data->conf1 & 0x60) {
+ case 0x00:
+ /*
+ * remote temp1 controls fan1,
+ * remote temp2 controls fan2
+ */
+ res = data->temp[chan+1] >=
+ AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
+ break;
+ case 0x20: /* remote temp1 controls both fans */
+ res =
+ data->temp[1] >=
+ AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]);
+ break;
+ case 0x40: /* remote temp2 controls both fans */
+ res =
+ data->temp[2] >=
+ AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]);
+ break;
+ case 0x60: /* max controls both fans */
+ res =
+ data->temp[0] >=
+ AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0])
+ || data->temp[1] >=
+ AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1])
+ || (data->chip_type == adm1031
+ && data->temp[2] >=
+ AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]));
+ break;
+ }
+ } else {
+ res = data->pwm[chan] > 0;
+ }
+ return res;
+}
+
+static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ int value;
+
+ value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr],
+ FAN_DIV_FROM_REG(data->fan_div[nr])) : 0;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[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 adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n",
+ FAN_FROM_REG(data->fan_min[nr],
+ FAN_DIV_FROM_REG(data->fan_div[nr])));
+}
+static ssize_t fan_min_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ mutex_lock(&data->update_lock);
+ if (val) {
+ data->fan_min[nr] =
+ FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr]));
+ } else {
+ data->fan_min[nr] = 0xff;
+ }
+ adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+static ssize_t fan_div_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ u8 tmp;
+ int old_div;
+ int new_min;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ tmp = val == 8 ? 0xc0 :
+ val == 4 ? 0x80 :
+ val == 2 ? 0x40 :
+ val == 1 ? 0x00 :
+ 0xff;
+ if (tmp == 0xff)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ /* Get fresh readings */
+ data->fan_div[nr] = adm1031_read_value(client,
+ ADM1031_REG_FAN_DIV(nr));
+ data->fan_min[nr] = adm1031_read_value(client,
+ ADM1031_REG_FAN_MIN(nr));
+
+ /* Write the new clock divider and fan min */
+ old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
+ data->fan_div[nr] = tmp | (0x3f & data->fan_div[nr]);
+ new_min = data->fan_min[nr] * old_div / val;
+ data->fan_min[nr] = new_min > 0xff ? 0xff : new_min;
+
+ adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr),
+ data->fan_div[nr]);
+ adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr),
+ data->fan_min[nr]);
+
+ /* Invalidate the cache: fan speed is no longer valid */
+ data->valid = false;
+ 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_RW(fan1_div, fan_div, 0);
+static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
+static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
+static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
+
+/* Temps */
+static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ int ext;
+ ext = nr == 0 ?
+ ((data->ext_temp[nr] >> 6) & 0x3) * 2 :
+ (((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7));
+ return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext));
+}
+static ssize_t temp_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n",
+ TEMP_OFFSET_FROM_REG(data->temp_offset[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 adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
+}
+static ssize_t temp_max_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
+}
+static ssize_t temp_crit_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
+}
+static ssize_t temp_offset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ val = clamp_val(val, -15000, 15000);
+ mutex_lock(&data->update_lock);
+ data->temp_offset[nr] = TEMP_OFFSET_TO_REG(val);
+ adm1031_write_value(client, ADM1031_REG_TEMP_OFFSET(nr),
+ data->temp_offset[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+static ssize_t temp_min_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ val = clamp_val(val, -55000, 127000);
+ mutex_lock(&data->update_lock);
+ data->temp_min[nr] = TEMP_TO_REG(val);
+ adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr),
+ data->temp_min[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+static ssize_t temp_max_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ val = clamp_val(val, -55000, 127000);
+ mutex_lock(&data->update_lock);
+ data->temp_max[nr] = TEMP_TO_REG(val);
+ adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr),
+ data->temp_max[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+static ssize_t temp_crit_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = to_sensor_dev_attr(attr)->index;
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ val = clamp_val(val, -55000, 127000);
+ mutex_lock(&data->update_lock);
+ data->temp_crit[nr] = TEMP_TO_REG(val);
+ adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr),
+ data->temp_crit[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_offset, temp_offset, 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_RW(temp1_crit, temp_crit, 0);
+static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_offset, temp_offset, 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_RW(temp2_crit, temp_crit, 1);
+static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_offset, temp_offset, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_crit, temp_crit, 2);
+
+/* Alarms */
+static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", data->alarm);
+}
+
+static DEVICE_ATTR_RO(alarms);
+
+static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int bitnr = to_sensor_dev_attr(attr)->index;
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", (data->alarm >> bitnr) & 1);
+}
+
+static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 0);
+static SENSOR_DEVICE_ATTR_RO(fan1_fault, alarm, 1);
+static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 2);
+static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, alarm, 3);
+static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 4);
+static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 5);
+static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 6);
+static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, alarm, 7);
+static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 8);
+static SENSOR_DEVICE_ATTR_RO(fan2_fault, alarm, 9);
+static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, alarm, 10);
+static SENSOR_DEVICE_ATTR_RO(temp3_min_alarm, alarm, 11);
+static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, alarm, 12);
+static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 13);
+static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 14);
+
+/* Update Interval */
+static const unsigned int update_intervals[] = {
+ 16000, 8000, 4000, 2000, 1000, 500, 250, 125,
+};
+
+static ssize_t update_interval_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%u\n", data->update_interval);
+}
+
+static ssize_t update_interval_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int i, err;
+ u8 reg;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ /*
+ * Find the nearest update interval from the table.
+ * Use it to determine the matching update rate.
+ */
+ for (i = 0; i < ARRAY_SIZE(update_intervals) - 1; i++) {
+ if (val >= update_intervals[i])
+ break;
+ }
+ /* if not found, we point to the last entry (lowest update interval) */
+
+ /* set the new update rate while preserving other settings */
+ reg = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
+ reg &= ~ADM1031_UPDATE_RATE_MASK;
+ reg |= i << ADM1031_UPDATE_RATE_SHIFT;
+ adm1031_write_value(client, ADM1031_REG_FAN_FILTER, reg);
+
+ mutex_lock(&data->update_lock);
+ data->update_interval = update_intervals[i];
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(update_interval);
+
+static struct attribute *adm1031_attributes[] = {
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_div.dev_attr.attr,
+ &sensor_dev_attr_fan1_min.dev_attr.attr,
+ &sensor_dev_attr_fan1_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan1_fault.dev_attr.attr,
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_auto_fan1_channel.dev_attr.attr,
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_offset.dev_attr.attr,
+ &sensor_dev_attr_temp1_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_offset.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_fault.dev_attr.attr,
+
+ &sensor_dev_attr_auto_temp1_off.dev_attr.attr,
+ &sensor_dev_attr_auto_temp1_min.dev_attr.attr,
+ &sensor_dev_attr_auto_temp1_max.dev_attr.attr,
+
+ &sensor_dev_attr_auto_temp2_off.dev_attr.attr,
+ &sensor_dev_attr_auto_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_auto_temp2_max.dev_attr.attr,
+
+ &sensor_dev_attr_auto_fan1_min_pwm.dev_attr.attr,
+
+ &dev_attr_update_interval.attr,
+ &dev_attr_alarms.attr,
+
+ NULL
+};
+
+static const struct attribute_group adm1031_group = {
+ .attrs = adm1031_attributes,
+};
+
+static struct attribute *adm1031_attributes_opt[] = {
+ &sensor_dev_attr_fan2_input.dev_attr.attr,
+ &sensor_dev_attr_fan2_div.dev_attr.attr,
+ &sensor_dev_attr_fan2_min.dev_attr.attr,
+ &sensor_dev_attr_fan2_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan2_fault.dev_attr.attr,
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ &sensor_dev_attr_auto_fan2_channel.dev_attr.attr,
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_offset.dev_attr.attr,
+ &sensor_dev_attr_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_fault.dev_attr.attr,
+ &sensor_dev_attr_auto_temp3_off.dev_attr.attr,
+ &sensor_dev_attr_auto_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_auto_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_auto_fan2_min_pwm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group adm1031_group_opt = {
+ .attrs = adm1031_attributes_opt,
+};
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int adm1031_detect(struct i2c_client *client,
+ struct i2c_board_info *info)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ const char *name;
+ int id, co;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ id = i2c_smbus_read_byte_data(client, 0x3d);
+ co = i2c_smbus_read_byte_data(client, 0x3e);
+
+ if (!((id == 0x31 || id == 0x30) && co == 0x41))
+ return -ENODEV;
+ name = (id == 0x30) ? "adm1030" : "adm1031";
+
+ strscpy(info->type, name, I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static void adm1031_init_client(struct i2c_client *client)
+{
+ unsigned int read_val;
+ unsigned int mask;
+ int i;
+ struct adm1031_data *data = i2c_get_clientdata(client);
+
+ mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE);
+ if (data->chip_type == adm1031) {
+ mask |= (ADM1031_CONF2_PWM2_ENABLE |
+ ADM1031_CONF2_TACH2_ENABLE);
+ }
+ /* Initialize the ADM1031 chip (enables fan speed reading ) */
+ read_val = adm1031_read_value(client, ADM1031_REG_CONF2);
+ if ((read_val | mask) != read_val)
+ adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
+
+ read_val = adm1031_read_value(client, ADM1031_REG_CONF1);
+ if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) {
+ adm1031_write_value(client, ADM1031_REG_CONF1,
+ read_val | ADM1031_CONF1_MONITOR_ENABLE);
+ }
+
+ /* Read the chip's update rate */
+ mask = ADM1031_UPDATE_RATE_MASK;
+ read_val = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
+ i = (read_val & mask) >> ADM1031_UPDATE_RATE_SHIFT;
+ /* Save it as update interval */
+ data->update_interval = update_intervals[i];
+}
+
+static const struct i2c_device_id adm1031_id[];
+
+static int adm1031_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct adm1031_data *data;
+
+ data = devm_kzalloc(dev, sizeof(struct adm1031_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, data);
+ data->client = client;
+ data->chip_type = i2c_match_id(adm1031_id, client)->driver_data;
+ mutex_init(&data->update_lock);
+
+ if (data->chip_type == adm1030)
+ data->chan_select_table = &auto_channel_select_table_adm1030;
+ else
+ data->chan_select_table = &auto_channel_select_table_adm1031;
+
+ /* Initialize the ADM1031 chip */
+ adm1031_init_client(client);
+
+ /* sysfs hooks */
+ data->groups[0] = &adm1031_group;
+ if (data->chip_type == adm1031)
+ data->groups[1] = &adm1031_group_opt;
+
+ 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 adm1031_id[] = {
+ { "adm1030", adm1030 },
+ { "adm1031", adm1031 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adm1031_id);
+
+static struct i2c_driver adm1031_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "adm1031",
+ },
+ .probe_new = adm1031_probe,
+ .id_table = adm1031_id,
+ .detect = adm1031_detect,
+ .address_list = normal_i2c,
+};
+
+module_i2c_driver(adm1031_driver);
+
+MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
+MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 13:02:45 +0000