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Diffstat (limited to 'drivers/hwmon/w83627hf.c')
-rw-r--r--drivers/hwmon/w83627hf.c272
1 files changed, 178 insertions, 94 deletions
diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index 374118f2b9f9..5ce54a297249 100644
--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -1,43 +1,43 @@
/*
- w83627hf.c - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
- Copyright (c) 1998 - 2003 Frodo Looijaard <frodol@dds.nl>,
- Philip Edelbrock <phil@netroedge.com>,
- and Mark Studebaker <mdsxyz123@yahoo.com>
- Ported to 2.6 by Bernhard C. Schrenk <clemy@clemy.org>
- Copyright (c) 2007 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.
-*/
+ * w83627hf.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ * Copyright (c) 1998 - 2003 Frodo Looijaard <frodol@dds.nl>,
+ * Philip Edelbrock <phil@netroedge.com>,
+ * and Mark Studebaker <mdsxyz123@yahoo.com>
+ * Ported to 2.6 by Bernhard C. Schrenk <clemy@clemy.org>
+ * Copyright (c) 2007 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.
+ */
/*
- Supports following chips:
-
- Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
- w83627hf 9 3 2 3 0x20 0x5ca3 no yes(LPC)
- w83627thf 7 3 3 3 0x90 0x5ca3 no yes(LPC)
- w83637hf 7 3 3 3 0x80 0x5ca3 no yes(LPC)
- w83687thf 7 3 3 3 0x90 0x5ca3 no yes(LPC)
- w83697hf 8 2 2 2 0x60 0x5ca3 no yes(LPC)
-
- For other winbond chips, and for i2c support in the above chips,
- use w83781d.c.
-
- Note: automatic ("cruise") fan control for 697, 637 & 627thf not
- supported yet.
-*/
+ * Supports following chips:
+ *
+ * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
+ * w83627hf 9 3 2 3 0x20 0x5ca3 no yes(LPC)
+ * w83627thf 7 3 3 3 0x90 0x5ca3 no yes(LPC)
+ * w83637hf 7 3 3 3 0x80 0x5ca3 no yes(LPC)
+ * w83687thf 7 3 3 3 0x90 0x5ca3 no yes(LPC)
+ * w83697hf 8 2 2 2 0x60 0x5ca3 no yes(LPC)
+ *
+ * For other winbond chips, and for i2c support in the above chips,
+ * use w83781d.c.
+ *
+ * Note: automatic ("cruise") fan control for 697, 637 & 627thf not
+ * supported yet.
+ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -80,7 +80,7 @@ module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID");
/* modified from kernel/include/traps.c */
-#define DEV 0x07 /* Register: Logical device select */
+#define DEV 0x07 /* Register: Logical device select */
/* logical device numbers for superio_select (below) */
#define W83627HF_LD_FDC 0x00
@@ -99,7 +99,7 @@ MODULE_PARM_DESC(force_id, "Override the detected device ID");
#define W83627HF_LD_ACPI 0x0a
#define W83627HF_LD_HWM 0x0b
-#define DEVID 0x20 /* Register: Device ID */
+#define DEVID 0x20 /* Register: Device ID */
#define W83627THF_GPIO5_EN 0x30 /* w83627thf only */
#define W83627THF_GPIO5_IOSR 0xf3 /* w83627thf only */
@@ -248,10 +248,12 @@ static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
#define W83781D_DEFAULT_BETA 3435
-/* Conversions. 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.
- Fixing this is just not worth it. */
+/*
+ * Conversions. 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.
+ * Fixing this is just not worth it.
+ */
#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255))
#define IN_FROM_REG(val) ((val) * 16)
@@ -267,8 +269,10 @@ static inline u8 FAN_TO_REG(long rpm, int div)
#define TEMP_MIN (-128000)
#define TEMP_MAX ( 127000)
-/* TEMP: 0.001C/bit (-128C to +127C)
- REG: 1C/bit, two's complement */
+/*
+ * TEMP: 0.001C/bit (-128C to +127C)
+ * REG: 1C/bit, two's complement
+ */
static u8 TEMP_TO_REG(long temp)
{
int ntemp = SENSORS_LIMIT(temp, TEMP_MIN, TEMP_MAX);
@@ -294,8 +298,10 @@ static inline unsigned long pwm_freq_from_reg_627hf(u8 reg)
static inline u8 pwm_freq_to_reg_627hf(unsigned long val)
{
u8 i;
- /* Only 5 dividers (1 2 4 8 16)
- Search for the nearest available frequency */
+ /*
+ * Only 5 dividers (1 2 4 8 16)
+ * Search for the nearest available frequency
+ */
for (i = 0; i < 4; i++) {
if (val > (((W83627HF_BASE_PWM_FREQ >> i) +
(W83627HF_BASE_PWM_FREQ >> (i+1))) / 2))
@@ -313,7 +319,7 @@ static inline unsigned long pwm_freq_from_reg(u8 reg)
/* This should not happen but anyway... */
if (reg == 0)
reg++;
- return (clock / (reg << 8));
+ return clock / (reg << 8);
}
static inline u8 pwm_freq_to_reg(unsigned long val)
{
@@ -321,11 +327,11 @@ static inline u8 pwm_freq_to_reg(unsigned long val)
if (val >= 93750) /* The highest we can do */
return 0x01;
if (val >= 720) /* Use 24 MHz clock */
- return (24000000UL / (val << 8));
+ return 24000000UL / (val << 8);
if (val < 6) /* The lowest we can do */
return 0xFF;
else /* Use 180 kHz clock */
- return (0x80 | (180000UL / (val << 8)));
+ return 0x80 | (180000UL / (val << 8));
}
#define BEEP_MASK_FROM_REG(val) ((val) & 0xff7fff)
@@ -342,11 +348,13 @@ static inline u8 DIV_TO_REG(long val)
break;
val >>= 1;
}
- return ((u8) i);
+ return (u8)i;
}
-/* For each registered chip, we need to keep some data in memory.
- The structure is dynamically allocated. */
+/*
+ * For each registered chip, we need to keep some data in memory.
+ * The structure is dynamically allocated.
+ */
struct w83627hf_data {
unsigned short addr;
const char *name;
@@ -372,11 +380,13 @@ struct w83627hf_data {
u32 beep_mask; /* Register encoding, combined */
u8 pwm[3]; /* Register value */
u8 pwm_enable[3]; /* 1 = manual
- 2 = thermal cruise (also called SmartFan I)
- 3 = fan speed cruise */
+ * 2 = thermal cruise (also called SmartFan I)
+ * 3 = fan speed cruise
+ */
u8 pwm_freq[3]; /* Register value */
u16 sens[3]; /* 1 = pentium diode; 2 = 3904 diode;
- 4 = thermistor */
+ * 4 = thermistor
+ */
u8 vrm;
u8 vrm_ovt; /* Register value, 627THF/637HF/687THF only */
};
@@ -427,7 +437,12 @@ store_in_min(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- long val = simple_strtol(buf, NULL, 10);
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val);
@@ -441,7 +456,12 @@ store_in_max(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- long val = simple_strtol(buf, NULL, 10);
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val);
@@ -506,9 +526,12 @@ static ssize_t store_regs_in_min0(struct device *dev, struct device_attribute *a
const char *buf, size_t count)
{
struct w83627hf_data *data = dev_get_drvdata(dev);
- u32 val;
+ 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);
@@ -533,9 +556,12 @@ static ssize_t store_regs_in_max0(struct device *dev, struct device_attribute *a
const char *buf, size_t count)
{
struct w83627hf_data *data = dev_get_drvdata(dev);
- u32 val;
+ 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);
@@ -584,7 +610,12 @@ store_fan_min(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- u32 val = simple_strtoul(buf, NULL, 10);
+ 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, DIV_FROM_REG(data->fan_div[nr]));
@@ -645,9 +676,15 @@ store_temp_max(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- long val = simple_strtol(buf, NULL, 10);
- u16 tmp = (nr) ? LM75_TEMP_TO_REG(val) : TEMP_TO_REG(val);
+ u16 tmp;
+ long val;
+ int err;
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ tmp = (nr) ? LM75_TEMP_TO_REG(val) : TEMP_TO_REG(val);
mutex_lock(&data->update_lock);
data->temp_max[nr] = tmp;
w83627hf_write_value(data, w83627hf_reg_temp_over[nr], tmp);
@@ -661,9 +698,15 @@ store_temp_max_hyst(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- long val = simple_strtol(buf, NULL, 10);
- u16 tmp = (nr) ? LM75_TEMP_TO_REG(val) : TEMP_TO_REG(val);
+ u16 tmp;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+ tmp = (nr) ? LM75_TEMP_TO_REG(val) : TEMP_TO_REG(val);
mutex_lock(&data->update_lock);
data->temp_max_hyst[nr] = tmp;
w83627hf_write_value(data, w83627hf_reg_temp_hyst[nr], tmp);
@@ -701,9 +744,12 @@ static ssize_t
store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct w83627hf_data *data = dev_get_drvdata(dev);
- u32 val;
+ unsigned long val;
+ int err;
- val = simple_strtoul(buf, NULL, 10);
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
data->vrm = val;
return count;
@@ -755,8 +801,11 @@ store_beep_mask(struct device *dev, struct device_attribute *attr,
{
struct w83627hf_data *data = dev_get_drvdata(dev);
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);
@@ -791,10 +840,14 @@ store_beep(struct device *dev, struct device_attribute *attr,
{
struct w83627hf_data *data = dev_get_drvdata(dev);
int bitnr = to_sensor_dev_attr(attr)->index;
- unsigned long bit;
u8 reg;
+ unsigned long bit;
+ int err;
+
+ err = kstrtoul(buf, 10, &bit);
+ if (err)
+ return err;
- bit = simple_strtoul(buf, NULL, 10);
if (bit & ~1)
return -EINVAL;
@@ -872,10 +925,12 @@ show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
return sprintf(buf, "%ld\n",
(long) 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 *devattr,
const char *buf, size_t count)
@@ -884,7 +939,12 @@ store_fan_div(struct device *dev, struct device_attribute *devattr,
struct w83627hf_data *data = dev_get_drvdata(dev);
unsigned long min;
u8 reg;
- unsigned long val = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
@@ -933,7 +993,12 @@ store_pwm(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- u32 val = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
@@ -974,10 +1039,15 @@ store_pwm_enable(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- unsigned long val = simple_strtoul(buf, NULL, 10);
u8 reg;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
- if (!val || (val > 3)) /* modes 1, 2 and 3 are supported */
+ if (!val || val > 3) /* modes 1, 2 and 3 are supported */
return -EINVAL;
mutex_lock(&data->update_lock);
data->pwm_enable[nr] = val;
@@ -1016,9 +1086,12 @@ store_pwm_freq(struct device *dev, struct device_attribute *devattr,
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
static const u8 mask[]={0xF8, 0x8F};
- u32 val;
+ 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);
@@ -1060,9 +1133,13 @@ store_temp_type(struct device *dev, struct device_attribute *devattr,
{
int nr = to_sensor_dev_attr(devattr)->index;
struct w83627hf_data *data = dev_get_drvdata(dev);
- u32 val, tmp;
+ unsigned long val;
+ u32 tmp;
+ int err;
- val = simple_strtoul(buf, NULL, 10);
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
@@ -1290,7 +1367,8 @@ static int __devinit w83627hf_probe(struct platform_device *pdev)
goto ERROR0;
}
- if (!(data = kzalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) {
+ data = kzalloc(sizeof(struct w83627hf_data), GFP_KERNEL);
+ if (!data) {
err = -ENOMEM;
goto ERROR1;
}
@@ -1311,7 +1389,8 @@ static int __devinit w83627hf_probe(struct platform_device *pdev)
w83627hf_update_fan_div(data);
/* Register common device attributes */
- if ((err = sysfs_create_group(&dev->kobj, &w83627hf_group)))
+ err = sysfs_create_group(&dev->kobj, &w83627hf_group);
+ if (err)
goto ERROR3;
/* Register chip-specific device attributes */
@@ -1387,10 +1466,11 @@ static int __devinit w83627hf_probe(struct platform_device *pdev)
}
if (data->type == w83627thf || data->type == w83637hf
- || data->type == w83687thf)
- if ((err = device_create_file(dev,
- &sensor_dev_attr_pwm3.dev_attr)))
+ || data->type == w83687thf) {
+ err = device_create_file(dev, &sensor_dev_attr_pwm3.dev_attr);
+ if (err)
goto ERROR4;
+ }
if (data->type == w83637hf || data->type == w83687thf)
if ((err = device_create_file(dev,
@@ -1409,10 +1489,12 @@ static int __devinit w83627hf_probe(struct platform_device *pdev)
goto ERROR4;
if (data->type == w83627thf || data->type == w83637hf
- || data->type == w83687thf)
- if ((err = device_create_file(dev,
- &sensor_dev_attr_pwm3_enable.dev_attr)))
+ || data->type == w83687thf) {
+ err = device_create_file(dev,
+ &sensor_dev_attr_pwm3_enable.dev_attr);
+ if (err)
goto ERROR4;
+ }
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
@@ -1510,8 +1592,10 @@ static int __devinit w83627thf_read_gpio5(struct platform_device *pdev)
goto exit;
}
- /* Make sure the pins are configured for input
- There must be at least five (VRM 9), and possibly 6 (VRM 10) */
+ /*
+ * Make sure the pins are configured for input
+ * There must be at least five (VRM 9), and possibly 6 (VRM 10)
+ */
sel = superio_inb(sio_data, W83627THF_GPIO5_IOSR) & 0x3f;
if ((sel & 0x1f) != 0x1f) {
dev_dbg(&pdev->dev, "GPIO5 not configured for VID "
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.