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path: root/drivers/hwmon/adm1031.c
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-rw-r--r--drivers/hwmon/adm1031.c977
1 files changed, 977 insertions, 0 deletions
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c
new file mode 100644
index 000000000000..9168e983ca1d
--- /dev/null
+++ b/drivers/hwmon/adm1031.c
@@ -0,0 +1,977 @@
+/*
+ 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 <khali@linux-fr.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.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_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) (0xa + (nr))
+#define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
+
+#define ADM1031_REG_STATUS(nr) (0x2 + (nr))
+
+#define ADM1031_REG_CONF1 0x0
+#define ADM1031_REG_CONF2 0x1
+#define ADM1031_REG_EXT_TEMP 0x6
+
+#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))
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
+static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_2(adm1030, adm1031);
+
+typedef u8 auto_chan_table_t[8][2];
+
+/* Each client has this additional data */
+struct adm1031_data {
+ struct i2c_client client;
+ struct semaphore update_lock;
+ int chip_type;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+ /* The chan_select_table contains the possible configurations for
+ * auto fan control.
+ */
+ 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_min[3];
+ s8 temp_max[3];
+ s8 temp_crit[3];
+};
+
+static int adm1031_attach_adapter(struct i2c_adapter *adapter);
+static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind);
+static void adm1031_init_client(struct i2c_client *client);
+static int adm1031_detach_client(struct i2c_client *client);
+static struct adm1031_data *adm1031_update_device(struct device *dev);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver adm1031_driver = {
+ .owner = THIS_MODULE,
+ .name = "adm1031",
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = adm1031_attach_adapter,
+ .detach_client = adm1031_detach_client,
+};
+
+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);
+}
+
+
+#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 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(SENSORS_LIMIT(reg, 0, 65535), div);
+ return tmp > 255 ? 255 : tmp;
+}
+
+#define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6))
+
+#define PWM_TO_REG(val) (SENSORS_LIMIT((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);
+
+ 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 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 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, u8 * new_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) {
+ *new_reg = 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) {
+ *new_reg = exact_match;
+ } else if (first_match >= 0) {
+ *new_reg = first_match;
+ } else {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static ssize_t show_fan_auto_channel(struct device *dev, char *buf, int nr)
+{
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr));
+}
+
+static ssize_t
+set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+ u8 reg;
+ int ret;
+ u8 old_fan_mode;
+
+ old_fan_mode = data->conf1;
+
+ down(&data->update_lock);
+
+ if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, &reg))) {
+ up(&data->update_lock);
+ return ret;
+ }
+ if (((data->conf1 = FAN_CHAN_TO_REG(reg, 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);
+ up(&data->update_lock);
+ return count;
+}
+
+#define fan_auto_channel_offset(offset) \
+static ssize_t show_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_fan_auto_channel(dev, buf, offset - 1); \
+} \
+static ssize_t set_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_fan_auto_channel(dev, buf, count, offset - 1); \
+} \
+static DEVICE_ATTR(auto_fan##offset##_channel, S_IRUGO | S_IWUSR, \
+ show_fan_auto_channel_##offset, \
+ set_fan_auto_channel_##offset)
+
+fan_auto_channel_offset(1);
+fan_auto_channel_offset(2);
+
+/* Auto Temps */
+static ssize_t show_auto_temp_off(struct device *dev, char *buf, int nr)
+{
+ 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 show_auto_temp_min(struct device *dev, char *buf, int nr)
+{
+ 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
+set_auto_temp_min(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+
+ down(&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]);
+ up(&data->update_lock);
+ return count;
+}
+static ssize_t show_auto_temp_max(struct device *dev, char *buf, int nr)
+{
+ 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
+set_auto_temp_max(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+
+ down(&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]);
+ up(&data->update_lock);
+ return count;
+}
+
+#define auto_temp_reg(offset) \
+static ssize_t show_auto_temp_##offset##_off (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_auto_temp_off(dev, buf, offset - 1); \
+} \
+static ssize_t show_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_auto_temp_min(dev, buf, offset - 1); \
+} \
+static ssize_t show_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_auto_temp_max(dev, buf, offset - 1); \
+} \
+static ssize_t set_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_auto_temp_min(dev, buf, count, offset - 1); \
+} \
+static ssize_t set_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_auto_temp_max(dev, buf, count, offset - 1); \
+} \
+static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \
+ show_auto_temp_##offset##_off, NULL); \
+static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \
+ show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\
+static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \
+ show_auto_temp_##offset##_max, set_auto_temp_##offset##_max)
+
+auto_temp_reg(1);
+auto_temp_reg(2);
+auto_temp_reg(3);
+
+/* pwm */
+static ssize_t show_pwm(struct device *dev, char *buf, int nr)
+{
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
+}
+static ssize_t
+set_pwm(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+ int reg;
+
+ down(&data->update_lock);
+ if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
+ (((val>>4) & 0xf) != 5)) {
+ /* In automatic mode, the only PWM accepted is 33% */
+ up(&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));
+ up(&data->update_lock);
+ return count;
+}
+
+#define pwm_reg(offset) \
+static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_pwm(dev, buf, offset - 1); \
+} \
+static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_pwm(dev, buf, count, offset - 1); \
+} \
+static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
+ show_pwm_##offset, set_pwm_##offset)
+
+pwm_reg(1);
+pwm_reg(2);
+
+/* 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 show_fan(struct device *dev, char *buf, int nr)
+{
+ 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 show_fan_div(struct device *dev, char *buf, int nr)
+{
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr]));
+}
+static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
+{
+ 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
+set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+
+ down(&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]);
+ up(&data->update_lock);
+ return count;
+}
+static ssize_t
+set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+ u8 tmp;
+ int old_div;
+ int new_min;
+
+ tmp = val == 8 ? 0xc0 :
+ val == 4 ? 0x80 :
+ val == 2 ? 0x40 :
+ val == 1 ? 0x00 :
+ 0xff;
+ if (tmp == 0xff)
+ return -EINVAL;
+
+ down(&data->update_lock);
+ old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
+ data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]);
+ new_min = data->fan_min[nr] * old_div /
+ FAN_DIV_FROM_REG(data->fan_div[nr]);
+ data->fan_min[nr] = new_min > 0xff ? 0xff : new_min;
+ data->fan[nr] = data->fan[nr] * old_div /
+ FAN_DIV_FROM_REG(data->fan_div[nr]);
+
+ 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]);
+ up(&data->update_lock);
+ return count;
+}
+
+#define fan_offset(offset) \
+static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_fan(dev, buf, offset - 1); \
+} \
+static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_fan_min(dev, buf, offset - 1); \
+} \
+static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_fan_div(dev, buf, offset - 1); \
+} \
+static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_fan_min(dev, buf, count, offset - 1); \
+} \
+static ssize_t set_fan_##offset##_div (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_fan_div(dev, buf, count, offset - 1); \
+} \
+static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
+ NULL); \
+static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
+ show_fan_##offset##_min, set_fan_##offset##_min); \
+static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
+ show_fan_##offset##_div, set_fan_##offset##_div); \
+static DEVICE_ATTR(auto_fan##offset##_min_pwm, S_IRUGO | S_IWUSR, \
+ show_pwm_##offset, set_pwm_##offset)
+
+fan_offset(1);
+fan_offset(2);
+
+
+/* Temps */
+static ssize_t show_temp(struct device *dev, char *buf, int nr)
+{
+ 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 show_temp_min(struct device *dev, char *buf, int nr)
+{
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
+}
+static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
+{
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
+}
+static ssize_t show_temp_crit(struct device *dev, char *buf, int nr)
+{
+ struct adm1031_data *data = adm1031_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
+}
+static ssize_t
+set_temp_min(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val;
+
+ val = simple_strtol(buf, NULL, 10);
+ val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
+ down(&data->update_lock);
+ data->temp_min[nr] = TEMP_TO_REG(val);
+ adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr),
+ data->temp_min[nr]);
+ up(&data->update_lock);
+ return count;
+}
+static ssize_t
+set_temp_max(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val;
+
+ val = simple_strtol(buf, NULL, 10);
+ val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
+ down(&data->update_lock);
+ data->temp_max[nr] = TEMP_TO_REG(val);
+ adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr),
+ data->temp_max[nr]);
+ up(&data->update_lock);
+ return count;
+}
+static ssize_t
+set_temp_crit(struct device *dev, const char *buf, size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int val;
+
+ val = simple_strtol(buf, NULL, 10);
+ val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
+ down(&data->update_lock);
+ data->temp_crit[nr] = TEMP_TO_REG(val);
+ adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr),
+ data->temp_crit[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+#define temp_reg(offset) \
+static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_temp(dev, buf, offset - 1); \
+} \
+static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_temp_min(dev, buf, offset - 1); \
+} \
+static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_temp_max(dev, buf, offset - 1); \
+} \
+static ssize_t show_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ return show_temp_crit(dev, buf, offset - 1); \
+} \
+static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_temp_min(dev, buf, count, offset - 1); \
+} \
+static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_temp_max(dev, buf, count, offset - 1); \
+} \
+static ssize_t set_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return set_temp_crit(dev, buf, count, offset - 1); \
+} \
+static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
+ NULL); \
+static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
+ show_temp_##offset##_min, set_temp_##offset##_min); \
+static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
+ show_temp_##offset##_max, set_temp_##offset##_max); \
+static DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
+ show_temp_##offset##_crit, set_temp_##offset##_crit)
+
+temp_reg(1);
+temp_reg(2);
+temp_reg(3);
+
+/* Alarms */
+static ssize_t show_alarms(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(alarms, S_IRUGO, show_alarms, NULL);
+
+
+static int adm1031_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_CLASS_HWMON))
+ return 0;
+ return i2c_detect(adapter, &addr_data, adm1031_detect);
+}
+
+/* This function is called by i2c_detect */
+static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ struct i2c_client *new_client;
+ struct adm1031_data *data;
+ int err = 0;
+ const char *name = "";
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ goto exit;
+
+ if (!(data = kmalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+ memset(data, 0, sizeof(struct adm1031_data));
+
+ new_client = &data->client;
+ i2c_set_clientdata(new_client, data);
+ new_client->addr = address;
+ new_client->adapter = adapter;
+ new_client->driver = &adm1031_driver;
+ new_client->flags = 0;
+
+ if (kind < 0) {
+ int id, co;
+ id = i2c_smbus_read_byte_data(new_client, 0x3d);
+ co = i2c_smbus_read_byte_data(new_client, 0x3e);
+
+ if (!((id == 0x31 || id == 0x30) && co == 0x41))
+ goto exit_free;
+ kind = (id == 0x30) ? adm1030 : adm1031;
+ }
+
+ if (kind <= 0)
+ kind = adm1031;
+
+ /* Given the detected chip type, set the chip name and the
+ * auto fan control helper table. */
+ if (kind == adm1030) {
+ name = "adm1030";
+ data->chan_select_table = &auto_channel_select_table_adm1030;
+ } else if (kind == adm1031) {
+ name = "adm1031";
+ data->chan_select_table = &auto_channel_select_table_adm1031;
+ }
+ data->chip_type = kind;
+
+ strlcpy(new_client->name, name, I2C_NAME_SIZE);
+ data->valid = 0;
+ init_MUTEX(&data->update_lock);
+
+ /* Tell the I2C layer a new client has arrived */
+ if ((err = i2c_attach_client(new_client)))
+ goto exit_free;
+
+ /* Initialize the ADM1031 chip */
+ adm1031_init_client(new_client);
+
+ /* Register sysfs hooks */
+ device_create_file(&new_client->dev, &dev_attr_fan1_input);
+ device_create_file(&new_client->dev, &dev_attr_fan1_div);
+ device_create_file(&new_client->dev, &dev_attr_fan1_min);
+ device_create_file(&new_client->dev, &dev_attr_pwm1);
+ device_create_file(&new_client->dev, &dev_attr_auto_fan1_channel);
+ device_create_file(&new_client->dev, &dev_attr_temp1_input);
+ device_create_file(&new_client->dev, &dev_attr_temp1_min);
+ device_create_file(&new_client->dev, &dev_attr_temp1_max);
+ device_create_file(&new_client->dev, &dev_attr_temp1_crit);
+ device_create_file(&new_client->dev, &dev_attr_temp2_input);
+ device_create_file(&new_client->dev, &dev_attr_temp2_min);
+ device_create_file(&new_client->dev, &dev_attr_temp2_max);
+ device_create_file(&new_client->dev, &dev_attr_temp2_crit);
+
+ device_create_file(&new_client->dev, &dev_attr_auto_temp1_off);
+ device_create_file(&new_client->dev, &dev_attr_auto_temp1_min);
+ device_create_file(&new_client->dev, &dev_attr_auto_temp1_max);
+
+ device_create_file(&new_client->dev, &dev_attr_auto_temp2_off);
+ device_create_file(&new_client->dev, &dev_attr_auto_temp2_min);
+ device_create_file(&new_client->dev, &dev_attr_auto_temp2_max);
+
+ device_create_file(&new_client->dev, &dev_attr_auto_fan1_min_pwm);
+
+ device_create_file(&new_client->dev, &dev_attr_alarms);
+
+ if (kind == adm1031) {
+ device_create_file(&new_client->dev, &dev_attr_fan2_input);
+ device_create_file(&new_client->dev, &dev_attr_fan2_div);
+ device_create_file(&new_client->dev, &dev_attr_fan2_min);
+ device_create_file(&new_client->dev, &dev_attr_pwm2);
+ device_create_file(&new_client->dev,
+ &dev_attr_auto_fan2_channel);
+ device_create_file(&new_client->dev, &dev_attr_temp3_input);
+ device_create_file(&new_client->dev, &dev_attr_temp3_min);
+ device_create_file(&new_client->dev, &dev_attr_temp3_max);
+ device_create_file(&new_client->dev, &dev_attr_temp3_crit);
+ device_create_file(&new_client->dev, &dev_attr_auto_temp3_off);
+ device_create_file(&new_client->dev, &dev_attr_auto_temp3_min);
+ device_create_file(&new_client->dev, &dev_attr_auto_temp3_max);
+ device_create_file(&new_client->dev, &dev_attr_auto_fan2_min_pwm);
+ }
+
+ return 0;
+
+exit_free:
+ kfree(new_client);
+exit:
+ return err;
+}
+
+static int adm1031_detach_client(struct i2c_client *client)
+{
+ int ret;
+ if ((ret = i2c_detach_client(client)) != 0) {
+ return ret;
+ }
+ kfree(client);
+ return 0;
+}
+
+static void adm1031_init_client(struct i2c_client *client)
+{
+ unsigned int read_val;
+ unsigned int mask;
+ 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);
+ }
+
+}
+
+static struct adm1031_data *adm1031_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm1031_data *data = i2c_get_clientdata(client);
+ int chan;
+
+ down(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+ || !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_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] =
+ 0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >>
+ (4*chan));
+ }
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ up(&data->update_lock);
+
+ return data;
+}
+
+static int __init sensors_adm1031_init(void)
+{
+ return i2c_add_driver(&adm1031_driver);
+}
+
+static void __exit sensors_adm1031_exit(void)
+{
+ i2c_del_driver(&adm1031_driver);
+}
+
+MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
+MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_adm1031_init);
+module_exit(sensors_adm1031_exit);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-02 16:03:04 +0000