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Diffstat (limited to 'drivers/hwmon/w83l786ng.c')
-rw-r--r--drivers/hwmon/w83l786ng.c190
1 files changed, 109 insertions, 81 deletions
diff --git a/drivers/hwmon/w83l786ng.c b/drivers/hwmon/w83l786ng.c
index 063bd9508d8a..5850b7706088 100644
--- a/drivers/hwmon/w83l786ng.c
+++ b/drivers/hwmon/w83l786ng.c
@@ -1,28 +1,28 @@
/*
- w83l786ng.c - Linux kernel driver for hardware monitoring
- Copyright (c) 2007 Kevin Lo <kevlo@kevlo.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 - version 2.
-
- 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., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301 USA.
-*/
+ * w83l786ng.c - Linux kernel driver for hardware monitoring
+ * Copyright (c) 2007 Kevin Lo <kevlo@kevlo.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 - version 2.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA.
+ */
/*
- Supports following chips:
-
- Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
- w83l786ng 3 2 2 2 0x7b 0x5ca3 yes no
-*/
+ * Supports following chips:
+ *
+ * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
+ * w83l786ng 3 2 2 2 0x7b 0x5ca3 yes no
+ */
#include <linux/module.h>
#include <linux/init.h>
@@ -52,7 +52,7 @@ MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
#define W83L786NG_REG_CONFIG 0x40
#define W83L786NG_REG_ALARM1 0x41
-#define W83L786NG_REG_ALARM2 0x42
+#define W83L786NG_REG_ALARM2 0x42
#define W83L786NG_REG_GPIO_EN 0x47
#define W83L786NG_REG_MAN_ID2 0x4C
#define W83L786NG_REG_MAN_ID1 0x4D
@@ -89,19 +89,23 @@ FAN_TO_REG(long rpm, int div)
return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
}
-#define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
+#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
((val) == 255 ? 0 : \
1350000 / ((val) * (div))))
/* for temp */
-#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
- : (val)) / 1000, 0, 0xff))
-#define TEMP_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
-
-/* The analog voltage inputs have 8mV LSB. Since the sysfs output is
- in mV as would be measured on the chip input pin, need to just
- multiply/divide by 8 to translate from/to register values. */
-#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 4) / 8), 0, 255))
+#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? \
+ (val) + 0x100 * 1000 \
+ : (val)) / 1000, 0, 0xff))
+#define TEMP_FROM_REG(val) (((val) & 0x80 ? \
+ (val) - 0x100 : (val)) * 1000)
+
+/*
+ * The analog voltage inputs have 8mV LSB. Since the sysfs output is
+ * in mV as would be measured on the chip input pin, need to just
+ * multiply/divide by 8 to translate from/to register values.
+ */
+#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 4) / 8), 0, 255))
#define IN_FROM_REG(val) ((val) * 8)
#define DIV_FROM_REG(val) (1 << (val))
@@ -116,7 +120,7 @@ DIV_TO_REG(long val)
break;
val >>= 1;
}
- return ((u8) i);
+ return (u8)i;
}
struct w83l786ng_data {
@@ -125,7 +129,7 @@ struct w83l786ng_data {
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
unsigned long last_nonvolatile; /* In jiffies, last time we update the
- nonvolatile registers */
+ * nonvolatile registers */
u8 in[3];
u8 in_max[3];
@@ -137,10 +141,10 @@ struct w83l786ng_data {
u8 temp[2][3];
u8 pwm[2];
u8 pwm_mode[2]; /* 0->DC variable voltage
- 1->PWM variable duty cycle */
+ * 1->PWM variable duty cycle */
u8 pwm_enable[2]; /* 1->manual
- 2->thermal cruise (also called SmartFan I) */
+ * 2->thermal cruise (also called SmartFan I) */
u8 tolerance[2];
};
@@ -186,11 +190,11 @@ w83l786ng_write_value(struct i2c_client *client, u8 reg, u8 value)
#define show_in_reg(reg) \
static ssize_t \
show_##reg(struct device *dev, struct device_attribute *attr, \
- char *buf) \
+ char *buf) \
{ \
int nr = to_sensor_dev_attr(attr)->index; \
struct w83l786ng_data *data = w83l786ng_update_device(dev); \
- return sprintf(buf,"%d\n", IN_FROM_REG(data->reg[nr])); \
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
}
show_in_reg(in)
@@ -199,13 +203,16 @@ show_in_reg(in_max)
#define store_in_reg(REG, reg) \
static ssize_t \
-store_in_##reg (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
+store_in_##reg(struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
{ \
int nr = to_sensor_dev_attr(attr)->index; \
struct i2c_client *client = to_i2c_client(dev); \
struct w83l786ng_data *data = i2c_get_clientdata(client); \
- unsigned long val = simple_strtoul(buf, NULL, 10); \
+ unsigned long val; \
+ int err = kstrtoul(buf, 10, &val); \
+ if (err) \
+ return err; \
mutex_lock(&data->update_lock); \
data->in_##reg[nr] = IN_TO_REG(val); \
w83l786ng_write_value(client, W83L786NG_REG_IN_##REG(nr), \
@@ -241,8 +248,8 @@ static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
{ \
int nr = to_sensor_dev_attr(attr)->index; \
struct w83l786ng_data *data = w83l786ng_update_device(dev); \
- return sprintf(buf,"%d\n", \
- FAN_FROM_REG(data->fan[nr], DIV_FROM_REG(data->fan_div[nr]))); \
+ return sprintf(buf, "%d\n", \
+ FAN_FROM_REG(data->fan[nr], DIV_FROM_REG(data->fan_div[nr]))); \
}
show_fan_reg(fan);
@@ -255,9 +262,13 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
int nr = to_sensor_dev_attr(attr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83l786ng_data *data = i2c_get_clientdata(client);
- u32 val;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
- val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
w83l786ng_write_value(client, W83L786NG_REG_FAN_MIN(nr),
@@ -276,10 +287,12 @@ show_fan_div(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
}
-/* Note: we save and restore the fan minimum here, because its value is
- determined in part by the fan divisor. This follows the principle of
- least surprise; the user doesn't expect the fan minimum to change just
- because the divisor changed. */
+/*
+ * Note: we save and restore the fan minimum here, because its value is
+ * determined in part by the fan divisor. This follows the principle of
+ * least surprise; the user doesn't expect the fan minimum to change just
+ * because the divisor changed.
+ */
static ssize_t
store_fan_div(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
@@ -294,11 +307,18 @@ store_fan_div(struct device *dev, struct device_attribute *attr,
u8 keep_mask = 0;
u8 new_shift = 0;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
/* Save fan_min */
mutex_lock(&data->update_lock);
min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
- data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
+ data->fan_div[nr] = DIV_TO_REG(val);
switch (nr) {
case 0:
@@ -371,16 +391,20 @@ store_temp(struct device *dev, struct device_attribute *attr,
int index = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83l786ng_data *data = i2c_get_clientdata(client);
- s32 val;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
- val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp[nr][index] = TEMP_TO_REG(val);
w83l786ng_write_value(client, W83L786NG_REG_TEMP[nr][index],
data->temp[nr][index]);
mutex_unlock(&data->update_lock);
- return count;
+ return count;
}
static struct sensor_device_attribute_2 sda_temp_input[] = {
@@ -403,8 +427,8 @@ static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
};
#define show_pwm_reg(reg) \
-static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
- char *buf) \
+static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
+ char *buf) \
{ \
struct w83l786ng_data *data = w83l786ng_update_device(dev); \
int nr = to_sensor_dev_attr(attr)->index; \
@@ -422,8 +446,13 @@ store_pwm_mode(struct device *dev, struct device_attribute *attr,
int nr = to_sensor_dev_attr(attr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83l786ng_data *data = i2c_get_clientdata(client);
- u32 val = simple_strtoul(buf, NULL, 10);
u8 reg;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
if (val > 1)
return -EINVAL;
@@ -445,7 +474,13 @@ store_pwm(struct device *dev, struct device_attribute *attr,
int nr = to_sensor_dev_attr(attr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83l786ng_data *data = i2c_get_clientdata(client);
- u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+ val = SENSORS_LIMIT(val, 0, 255);
mutex_lock(&data->update_lock);
data->pwm[nr] = val;
@@ -461,11 +496,15 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
int nr = to_sensor_dev_attr(attr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83l786ng_data *data = i2c_get_clientdata(client);
- u32 val = simple_strtoul(buf, NULL, 10);
-
u8 reg;
+ unsigned long val;
+ int err;
- if (!val || (val > 2)) /* only modes 1 and 2 are supported */
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ if (!val || val > 2) /* only modes 1 and 2 are supported */
return -EINVAL;
mutex_lock(&data->update_lock);
@@ -513,10 +552,13 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
int nr = to_sensor_dev_attr(attr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83l786ng_data *data = i2c_get_clientdata(client);
- u32 val;
u8 tol_tmp, tol_mask;
+ unsigned long val;
+ int err;
- val = simple_strtoul(buf, NULL, 10);
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
tol_mask = w83l786ng_read_value(client,
@@ -524,9 +566,8 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
tol_tmp = SENSORS_LIMIT(val, 0, 15);
tol_tmp &= 0x0f;
data->tolerance[nr] = tol_tmp;
- if (nr == 1) {
+ if (nr == 1)
tol_tmp <<= 4;
- }
w83l786ng_write_value(client, W83L786NG_REG_TOLERANCE,
tol_mask | tol_tmp);
@@ -591,9 +632,8 @@ w83l786ng_detect(struct i2c_client *client, struct i2c_board_info *info)
u16 man_id;
u8 chip_id;
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- }
/* Detection */
if ((w83l786ng_read_value(client, W83L786NG_REG_CONFIG) & 0x80)) {
@@ -652,7 +692,8 @@ w83l786ng_probe(struct i2c_client *client, const struct i2c_device_id *id)
data->fan_div[1] = (reg_tmp >> 4) & 0x07;
/* Register sysfs hooks */
- if ((err = sysfs_create_group(&client->dev.kobj, &w83l786ng_group)))
+ err = sysfs_create_group(&client->dev.kobj, &w83l786ng_group);
+ if (err)
goto exit_remove;
data->hwmon_dev = hwmon_device_register(dev);
@@ -769,21 +810,8 @@ static struct w83l786ng_data *w83l786ng_update_device(struct device *dev)
return data;
}
-static int __init
-sensors_w83l786ng_init(void)
-{
- return i2c_add_driver(&w83l786ng_driver);
-}
-
-static void __exit
-sensors_w83l786ng_exit(void)
-{
- i2c_del_driver(&w83l786ng_driver);
-}
+module_i2c_driver(w83l786ng_driver);
MODULE_AUTHOR("Kevin Lo");
MODULE_DESCRIPTION("w83l786ng driver");
MODULE_LICENSE("GPL");
-
-module_init(sensors_w83l786ng_init);
-module_exit(sensors_w83l786ng_exit);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.