forked from luck/tmp_suning_uos_patched
hwmon: (lm77) Fix checkpatch issues
Fixed: ERROR: code indent should use tabs where possible ERROR: do not use assignment in if condition ERROR: trailing whitespace WARNING: line over 80 characters WARNING: please, no space before tabs WARNING: simple_strtol is obsolete, use kstrtol instead WARNING: simple_strtoul is obsolete, use kstrtoul instead Modify multi-line comments to follow Documentation/CodingStyle. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck
Guenter Roeck
parent
f445a9af93
commit
02fe2fd949
|
|
@ -1,29 +1,29 @@
|
|||
/*
|
||||
lm77.c - Part of lm_sensors, Linux kernel modules for hardware
|
||||
monitoring
|
||||
|
||||
Copyright (c) 2004 Andras BALI <drewie@freemail.hu>
|
||||
|
||||
Heavily based on lm75.c by Frodo Looijaard <frodol@dds.nl>. The LM77
|
||||
is a temperature sensor and thermal window comparator with 0.5 deg
|
||||
resolution made by National Semiconductor. Complete datasheet can be
|
||||
obtained at their site:
|
||||
http://www.national.com/pf/LM/LM77.html
|
||||
|
||||
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.
|
||||
*/
|
||||
* lm77.c - Part of lm_sensors, Linux kernel modules for hardware
|
||||
* monitoring
|
||||
*
|
||||
* Copyright (c) 2004 Andras BALI <drewie@freemail.hu>
|
||||
*
|
||||
* Heavily based on lm75.c by Frodo Looijaard <frodol@dds.nl>. The LM77
|
||||
* is a temperature sensor and thermal window comparator with 0.5 deg
|
||||
* resolution made by National Semiconductor. Complete datasheet can be
|
||||
* obtained at their site:
|
||||
* http://www.national.com/pf/LM/LM77.html
|
||||
*
|
||||
* 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>
|
||||
|
|
@ -49,7 +49,7 @@ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
|
|||
|
||||
/* Each client has this additional data */
|
||||
struct lm77_data {
|
||||
struct device *hwmon_dev;
|
||||
struct device *hwmon_dev;
|
||||
struct mutex update_lock;
|
||||
char valid;
|
||||
unsigned long last_updated; /* In jiffies */
|
||||
|
|
@ -95,8 +95,10 @@ static struct i2c_driver lm77_driver = {
|
|||
#define LM77_TEMP_MIN (-55000)
|
||||
#define LM77_TEMP_MAX 125000
|
||||
|
||||
/* In the temperature registers, the low 3 bits are not part of the
|
||||
temperature values; they are the status bits. */
|
||||
/*
|
||||
* In the temperature registers, the low 3 bits are not part of the
|
||||
* temperature values; they are the status bits.
|
||||
*/
|
||||
static inline s16 LM77_TEMP_TO_REG(int temp)
|
||||
{
|
||||
int ntemp = SENSORS_LIMIT(temp, LM77_TEMP_MIN, LM77_TEMP_MAX);
|
||||
|
|
@ -112,7 +114,9 @@ static inline int LM77_TEMP_FROM_REG(s16 reg)
|
|||
|
||||
/* read routines for temperature limits */
|
||||
#define show(value) \
|
||||
static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
|
||||
static ssize_t show_##value(struct device *dev, \
|
||||
struct device_attribute *attr, \
|
||||
char *buf) \
|
||||
{ \
|
||||
struct lm77_data *data = lm77_update_device(dev); \
|
||||
return sprintf(buf, "%d\n", data->value); \
|
||||
|
|
@ -124,17 +128,20 @@ show(temp_min);
|
|||
show(temp_max);
|
||||
|
||||
/* read routines for hysteresis values */
|
||||
static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
static ssize_t show_temp_crit_hyst(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct lm77_data *data = lm77_update_device(dev);
|
||||
return sprintf(buf, "%d\n", data->temp_crit - data->temp_hyst);
|
||||
}
|
||||
static ssize_t show_temp_min_hyst(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
static ssize_t show_temp_min_hyst(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct lm77_data *data = lm77_update_device(dev);
|
||||
return sprintf(buf, "%d\n", data->temp_min + data->temp_hyst);
|
||||
}
|
||||
static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
static ssize_t show_temp_max_hyst(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct lm77_data *data = lm77_update_device(dev);
|
||||
return sprintf(buf, "%d\n", data->temp_max - data->temp_hyst);
|
||||
|
|
@ -142,29 +149,42 @@ static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute *a
|
|||
|
||||
/* write routines */
|
||||
#define set(value, reg) \
|
||||
static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
|
||||
{ \
|
||||
struct i2c_client *client = to_i2c_client(dev); \
|
||||
struct lm77_data *data = i2c_get_clientdata(client); \
|
||||
long val = simple_strtol(buf, NULL, 10); \
|
||||
\
|
||||
mutex_lock(&data->update_lock); \
|
||||
data->value = val; \
|
||||
lm77_write_value(client, reg, LM77_TEMP_TO_REG(data->value)); \
|
||||
mutex_unlock(&data->update_lock); \
|
||||
return count; \
|
||||
static ssize_t set_##value(struct device *dev, struct device_attribute *attr, \
|
||||
const char *buf, size_t count) \
|
||||
{ \
|
||||
struct i2c_client *client = to_i2c_client(dev); \
|
||||
struct lm77_data *data = i2c_get_clientdata(client); \
|
||||
long val; \
|
||||
int err = kstrtol(buf, 10, &val); \
|
||||
if (err) \
|
||||
return err; \
|
||||
\
|
||||
mutex_lock(&data->update_lock); \
|
||||
data->value = val; \
|
||||
lm77_write_value(client, reg, LM77_TEMP_TO_REG(data->value)); \
|
||||
mutex_unlock(&data->update_lock); \
|
||||
return count; \
|
||||
}
|
||||
|
||||
set(temp_min, LM77_REG_TEMP_MIN);
|
||||
set(temp_max, LM77_REG_TEMP_MAX);
|
||||
|
||||
/* hysteresis is stored as a relative value on the chip, so it has to be
|
||||
converted first */
|
||||
static ssize_t set_temp_crit_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
||||
/*
|
||||
* hysteresis is stored as a relative value on the chip, so it has to be
|
||||
* converted first
|
||||
*/
|
||||
static ssize_t set_temp_crit_hyst(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct lm77_data *data = i2c_get_clientdata(client);
|
||||
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);
|
||||
data->temp_hyst = data->temp_crit - val;
|
||||
|
|
@ -175,13 +195,19 @@ static ssize_t set_temp_crit_hyst(struct device *dev, struct device_attribute *a
|
|||
}
|
||||
|
||||
/* preserve hysteresis when setting T_crit */
|
||||
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
||||
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct lm77_data *data = i2c_get_clientdata(client);
|
||||
long val = simple_strtoul(buf, NULL, 10);
|
||||
int oldcrithyst;
|
||||
|
||||
unsigned long val;
|
||||
int err;
|
||||
|
||||
err = kstrtoul(buf, 10, &val);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
oldcrithyst = data->temp_crit - data->temp_hyst;
|
||||
data->temp_crit = val;
|
||||
|
|
@ -251,17 +277,19 @@ static int lm77_detect(struct i2c_client *new_client,
|
|||
I2C_FUNC_SMBUS_WORD_DATA))
|
||||
return -ENODEV;
|
||||
|
||||
/* Here comes the remaining detection. Since the LM77 has no
|
||||
register dedicated to identification, we have to rely on the
|
||||
following tricks:
|
||||
|
||||
1. the high 4 bits represent the sign and thus they should
|
||||
always be the same
|
||||
2. the high 3 bits are unused in the configuration register
|
||||
3. addresses 0x06 and 0x07 return the last read value
|
||||
4. registers cycling over 8-address boundaries
|
||||
|
||||
Word-sized registers are high-byte first. */
|
||||
/*
|
||||
* Here comes the remaining detection. Since the LM77 has no
|
||||
* register dedicated to identification, we have to rely on the
|
||||
* following tricks:
|
||||
*
|
||||
* 1. the high 4 bits represent the sign and thus they should
|
||||
* always be the same
|
||||
* 2. the high 3 bits are unused in the configuration register
|
||||
* 3. addresses 0x06 and 0x07 return the last read value
|
||||
* 4. registers cycling over 8-address boundaries
|
||||
*
|
||||
* Word-sized registers are high-byte first.
|
||||
*/
|
||||
|
||||
/* addresses cycling */
|
||||
cur = i2c_smbus_read_word_data(new_client, 0);
|
||||
|
|
@ -330,7 +358,8 @@ static int lm77_probe(struct i2c_client *new_client,
|
|||
lm77_init_client(new_client);
|
||||
|
||||
/* Register sysfs hooks */
|
||||
if ((err = sysfs_create_group(&new_client->dev.kobj, &lm77_group)))
|
||||
err = sysfs_create_group(&new_client->dev.kobj, &lm77_group);
|
||||
if (err)
|
||||
goto exit_free;
|
||||
|
||||
data->hwmon_dev = hwmon_device_register(&new_client->dev);
|
||||
|
|
@ -358,8 +387,10 @@ static int lm77_remove(struct i2c_client *client)
|
|||
return 0;
|
||||
}
|
||||
|
||||
/* All registers are word-sized, except for the configuration register.
|
||||
The LM77 uses the high-byte first convention. */
|
||||
/*
|
||||
* All registers are word-sized, except for the configuration register.
|
||||
* The LM77 uses the high-byte first convention.
|
||||
*/
|
||||
static u16 lm77_read_value(struct i2c_client *client, u8 reg)
|
||||
{
|
||||
if (reg == LM77_REG_CONF)
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user