linux-sg2042/drivers/hwmon/f75375s.c

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/*
* f75375s.c - driver for the Fintek F75375/SP, F75373 and
* F75387SG/RG hardware monitoring features
* Copyright (C) 2006-2007 Riku Voipio
*
* Datasheets available at:
*
* f75375:
* http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf
*
* f75373:
* http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf
*
* f75387:
* http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf
*
* 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/jiffies.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/f75375s.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
#include <linux/slab.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
enum chips { f75373, f75375, f75387 };
/* Fintek F75375 registers */
#define F75375_REG_CONFIG0 0x0
#define F75375_REG_CONFIG1 0x1
#define F75375_REG_CONFIG2 0x2
#define F75375_REG_CONFIG3 0x3
#define F75375_REG_ADDR 0x4
#define F75375_REG_INTR 0x31
#define F75375_CHIP_ID 0x5A
#define F75375_REG_VERSION 0x5C
#define F75375_REG_VENDOR 0x5D
#define F75375_REG_FAN_TIMER 0x60
#define F75375_REG_VOLT(nr) (0x10 + (nr))
#define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2)
#define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2)
#define F75375_REG_TEMP(nr) (0x14 + (nr))
#define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr))
#define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2)
#define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2)
#define F75375_REG_FAN(nr) (0x16 + (nr) * 2)
#define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2)
#define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10)
#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10)
#define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10)
#define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10)
#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
#define F75375_REG_FAN_B_SPEED(nr, step) \
((0xA5 + (nr) * 0x10) + (step) * 2)
#define F75375_REG_PWM1_RAISE_DUTY 0x69
#define F75375_REG_PWM2_RAISE_DUTY 0x6A
#define F75375_REG_PWM1_DROP_DUTY 0x6B
#define F75375_REG_PWM2_DROP_DUTY 0x6C
#define F75375_FAN_CTRL_LINEAR(nr) (4 + nr)
#define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4))
#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
#define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4))
#define F75387_FAN_MANU_MODE(nr) ((nr) * 4)
/*
* Data structures and manipulation thereof
*/
struct f75375_data {
unsigned short addr;
struct device *hwmon_dev;
const char *name;
int kind;
struct mutex update_lock; /* protect register access */
char valid;
unsigned long last_updated; /* In jiffies */
unsigned long last_limits; /* In jiffies */
/* Register values */
u8 in[4];
u8 in_max[4];
u8 in_min[4];
u16 fan[2];
u16 fan_min[2];
u16 fan_max[2];
u16 fan_target[2];
u8 fan_timer;
u8 pwm[2];
u8 pwm_mode[2];
u8 pwm_enable[2];
/*
* f75387: For remote temperature reading, it uses signed 11-bit
* values with LSB = 0.125 degree Celsius, left-justified in 16-bit
* registers. For original 8-bit temp readings, the LSB just is 0.
*/
s16 temp11[2];
s8 temp_high[2];
s8 temp_max_hyst[2];
};
static int f75375_detect(struct i2c_client *client,
struct i2c_board_info *info);
static int f75375_probe(struct i2c_client *client,
const struct i2c_device_id *id);
static int f75375_remove(struct i2c_client *client);
static const struct i2c_device_id f75375_id[] = {
{ "f75373", f75373 },
{ "f75375", f75375 },
{ "f75387", f75387 },
{ }
};
MODULE_DEVICE_TABLE(i2c, f75375_id);
static struct i2c_driver f75375_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "f75375",
},
.probe = f75375_probe,
.remove = f75375_remove,
.id_table = f75375_id,
.detect = f75375_detect,
.address_list = normal_i2c,
};
static inline int f75375_read8(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
/* in most cases, should be called while holding update_lock */
static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
{
return (i2c_smbus_read_byte_data(client, reg) << 8)
| i2c_smbus_read_byte_data(client, reg + 1);
}
static inline void f75375_write8(struct i2c_client *client, u8 reg,
u8 value)
{
i2c_smbus_write_byte_data(client, reg, value);
}
static inline void f75375_write16(struct i2c_client *client, u8 reg,
u16 value)
{
int err = i2c_smbus_write_byte_data(client, reg, (value >> 8));
if (err)
return;
i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
}
static void f75375_write_pwm(struct i2c_client *client, int nr)
{
struct f75375_data *data = i2c_get_clientdata(client);
if (data->kind == f75387)
f75375_write16(client, F75375_REG_FAN_EXP(nr), data->pwm[nr]);
else
f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
data->pwm[nr]);
}
static struct f75375_data *f75375_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct f75375_data *data = i2c_get_clientdata(client);
int nr;
mutex_lock(&data->update_lock);
/* Limit registers cache is refreshed after 60 seconds */
if (time_after(jiffies, data->last_limits + 60 * HZ)
|| !data->valid) {
for (nr = 0; nr < 2; nr++) {
data->temp_high[nr] =
f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
data->temp_max_hyst[nr] =
f75375_read8(client, F75375_REG_TEMP_HYST(nr));
data->fan_max[nr] =
f75375_read16(client, F75375_REG_FAN_FULL(nr));
data->fan_min[nr] =
f75375_read16(client, F75375_REG_FAN_MIN(nr));
data->fan_target[nr] =
f75375_read16(client, F75375_REG_FAN_EXP(nr));
}
for (nr = 0; nr < 4; nr++) {
data->in_max[nr] =
f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
data->in_min[nr] =
f75375_read8(client, F75375_REG_VOLT_LOW(nr));
}
data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
data->last_limits = jiffies;
}
/* Measurement registers cache is refreshed after 2 second */
if (time_after(jiffies, data->last_updated + 2 * HZ)
|| !data->valid) {
for (nr = 0; nr < 2; nr++) {
data->pwm[nr] = f75375_read8(client,
F75375_REG_FAN_PWM_DUTY(nr));
/* assign MSB, therefore shift it by 8 bits */
data->temp11[nr] =
f75375_read8(client, F75375_REG_TEMP(nr)) << 8;
if (data->kind == f75387)
/* merge F75387's temperature LSB (11-bit) */
data->temp11[nr] |=
f75375_read8(client,
F75387_REG_TEMP11_LSB(nr));
data->fan[nr] =
f75375_read16(client, F75375_REG_FAN(nr));
}
for (nr = 0; nr < 4; nr++)
data->in[nr] =
f75375_read8(client, F75375_REG_VOLT(nr));
data->last_updated = jiffies;
data->valid = 1;
}
mutex_unlock(&data->update_lock);
return data;
}
static inline u16 rpm_from_reg(u16 reg)
{
if (reg == 0 || reg == 0xffff)
return 0;
return 1500000 / reg;
}
static inline u16 rpm_to_reg(int rpm)
{
if (rpm < 367 || rpm > 0xffff)
return 0xffff;
return 1500000 / rpm;
}
static bool duty_mode_enabled(u8 pwm_enable)
{
switch (pwm_enable) {
case 0: /* Manual, duty mode (full speed) */
case 1: /* Manual, duty mode */
case 4: /* Auto, duty mode */
return true;
case 2: /* Auto, speed mode */
case 3: /* Manual, speed mode */
return false;
default:
WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
return true;
}
}
static bool auto_mode_enabled(u8 pwm_enable)
{
switch (pwm_enable) {
case 0: /* Manual, duty mode (full speed) */
case 1: /* Manual, duty mode */
case 3: /* Manual, speed mode */
return false;
case 2: /* Auto, speed mode */
case 4: /* Auto, duty mode */
return true;
default:
WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
return false;
}
}
static ssize_t set_fan_min(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
mutex_lock(&data->update_lock);
data->fan_min[nr] = rpm_to_reg(val);
f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_fan_target(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (auto_mode_enabled(data->pwm_enable[nr]))
return -EINVAL;
if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr]))
return -EINVAL;
mutex_lock(&data->update_lock);
data->fan_target[nr] = rpm_to_reg(val);
f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_pwm(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (auto_mode_enabled(data->pwm_enable[nr]) ||
!duty_mode_enabled(data->pwm_enable[nr]))
return -EINVAL;
mutex_lock(&data->update_lock);
data->pwm[nr] = clamp_val(val, 0, 255);
f75375_write_pwm(client, nr);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
*attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", data->pwm_enable[nr]);
}
static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
{
struct f75375_data *data = i2c_get_clientdata(client);
u8 fanmode;
if (val < 0 || val > 4)
return -EINVAL;
fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
if (data->kind == f75387) {
/* For now, deny dangerous toggling of duty mode */
if (duty_mode_enabled(data->pwm_enable[nr]) !=
duty_mode_enabled(val))
return -EOPNOTSUPP;
/* clear each fanX_mode bit before setting them properly */
fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr));
fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr));
switch (val) {
case 0: /* full speed */
fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
data->pwm[nr] = 255;
break;
case 1: /* PWM */
fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
break;
case 2: /* Automatic, speed mode */
break;
case 3: /* fan speed */
fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
break;
case 4: /* Automatic, pwm */
fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
break;
}
} else {
/* clear each fanX_mode bit before setting them properly */
fanmode &= ~(3 << FAN_CTRL_MODE(nr));
switch (val) {
case 0: /* full speed */
fanmode |= (3 << FAN_CTRL_MODE(nr));
data->pwm[nr] = 255;
break;
case 1: /* PWM */
fanmode |= (3 << FAN_CTRL_MODE(nr));
break;
case 2: /* AUTOMATIC*/
fanmode |= (1 << FAN_CTRL_MODE(nr));
break;
case 3: /* fan speed */
break;
case 4: /* Automatic pwm */
return -EINVAL;
}
}
f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
data->pwm_enable[nr] = val;
if (val == 0)
f75375_write_pwm(client, nr);
return 0;
}
static ssize_t set_pwm_enable(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
mutex_lock(&data->update_lock);
err = set_pwm_enable_direct(client, nr, val);
mutex_unlock(&data->update_lock);
return err ? err : count;
}
static ssize_t set_pwm_mode(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
u8 conf;
char reg, ctrl;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (!(val == 0 || val == 1))
return -EINVAL;
/* F75373 does not support DC (linear voltage) fan control mode */
if (data->kind == f75373 && val == 0)
return -EINVAL;
/* take care for different registers */
if (data->kind == f75387) {
reg = F75375_REG_FAN_TIMER;
ctrl = F75387_FAN_CTRL_LINEAR(nr);
} else {
reg = F75375_REG_CONFIG1;
ctrl = F75375_FAN_CTRL_LINEAR(nr);
}
mutex_lock(&data->update_lock);
conf = f75375_read8(client, reg);
conf &= ~(1 << ctrl);
if (val == 0)
conf |= (1 << ctrl);
f75375_write8(client, reg, conf);
data->pwm_mode[nr] = val;
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_pwm(struct device *dev, struct device_attribute
*attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", data->pwm[nr]);
}
static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
*attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", data->pwm_mode[nr]);
}
#define VOLT_FROM_REG(val) ((val) * 8)
#define VOLT_TO_REG(val) ((val) / 8)
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
}
static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
}
static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
}
static ssize_t set_in_max(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
mutex_lock(&data->update_lock);
data->in_max[nr] = val;
f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_in_min(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
mutex_lock(&data->update_lock);
data->in_min[nr] = val;
f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
#define TEMP_FROM_REG(val) ((val) * 1000)
#define TEMP_TO_REG(val) ((val) / 1000)
#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
}
static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
}
static ssize_t show_temp_max_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct f75375_data *data = f75375_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
}
static ssize_t set_temp_max(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(TEMP_TO_REG(val), 0, 127);
mutex_lock(&data->update_lock);
data->temp_high[nr] = val;
f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_temp_max_hyst(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 f75375_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(TEMP_TO_REG(val), 0, 127);
mutex_lock(&data->update_lock);
data->temp_max_hyst[nr] = val;
f75375_write8(client, F75375_REG_TEMP_HYST(nr),
data->temp_max_hyst[nr]);
mutex_unlock(&data->update_lock);
return count;
}
#define show_fan(thing) \
static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
char *buf)\
{\
int nr = to_sensor_dev_attr(attr)->index;\
struct f75375_data *data = f75375_update_device(dev); \
return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
}
show_fan(fan);
show_fan(fan_min);
show_fan(fan_max);
show_fan(fan_target);
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
show_in_max, set_in_max, 0);
static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
show_in_min, set_in_min, 0);
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
show_in_max, set_in_max, 1);
static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
show_in_min, set_in_min, 1);
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
show_in_max, set_in_max, 2);
static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
show_in_min, set_in_min, 2);
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
show_in_max, set_in_max, 3);
static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
show_in_min, set_in_min, 3);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
show_temp_max_hyst, set_temp_max_hyst, 0);
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
show_temp_max, set_temp_max, 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
show_temp_max_hyst, set_temp_max_hyst, 1);
static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
show_temp_max, set_temp_max, 1);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
show_fan_min, set_fan_min, 0);
static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
show_fan_target, set_fan_target, 0);
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
show_fan_min, set_fan_min, 1);
static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
show_fan_target, set_fan_target, 1);
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
show_pwm, set_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
show_pwm_enable, set_pwm_enable, 0);
static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
show_pwm_mode, set_pwm_mode, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
show_pwm, set_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
show_pwm_enable, set_pwm_enable, 1);
static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
show_pwm_mode, set_pwm_mode, 1);
static struct attribute *f75375_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan1_max.dev_attr.attr,
&sensor_dev_attr_fan1_min.dev_attr.attr,
&sensor_dev_attr_fan1_target.dev_attr.attr,
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan2_max.dev_attr.attr,
&sensor_dev_attr_fan2_min.dev_attr.attr,
&sensor_dev_attr_fan2_target.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1_mode.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm2_mode.dev_attr.attr,
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in0_max.dev_attr.attr,
&sensor_dev_attr_in0_min.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in1_max.dev_attr.attr,
&sensor_dev_attr_in1_min.dev_attr.attr,
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in2_max.dev_attr.attr,
&sensor_dev_attr_in2_min.dev_attr.attr,
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in3_max.dev_attr.attr,
&sensor_dev_attr_in3_min.dev_attr.attr,
NULL
};
static const struct attribute_group f75375_group = {
.attrs = f75375_attributes,
};
static void f75375_init(struct i2c_client *client, struct f75375_data *data,
struct f75375s_platform_data *f75375s_pdata)
{
int nr;
if (!f75375s_pdata) {
u8 conf, mode;
int nr;
conf = f75375_read8(client, F75375_REG_CONFIG1);
mode = f75375_read8(client, F75375_REG_FAN_TIMER);
for (nr = 0; nr < 2; nr++) {
if (data->kind == f75387) {
bool manu, duty;
if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
data->pwm_mode[nr] = 1;
manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1);
duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1);
if (!manu && duty)
/* auto, pwm */
data->pwm_enable[nr] = 4;
else if (manu && !duty)
/* manual, speed */
data->pwm_enable[nr] = 3;
else if (!manu && !duty)
/* automatic, speed */
data->pwm_enable[nr] = 2;
else
/* manual, pwm */
data->pwm_enable[nr] = 1;
} else {
if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr))))
data->pwm_mode[nr] = 1;
switch ((mode >> FAN_CTRL_MODE(nr)) & 3) {
case 0: /* speed */
data->pwm_enable[nr] = 3;
break;
case 1: /* automatic */
data->pwm_enable[nr] = 2;
break;
default: /* manual */
data->pwm_enable[nr] = 1;
break;
}
}
}
return;
}
set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
for (nr = 0; nr < 2; nr++) {
if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
!duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
continue;
data->pwm[nr] = clamp_val(f75375s_pdata->pwm[nr], 0, 255);
f75375_write_pwm(client, nr);
}
}
static int f75375_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct f75375_data *data;
struct f75375s_platform_data *f75375s_pdata =
dev_get_platdata(&client->dev);
int err;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
data = devm_kzalloc(&client->dev, sizeof(struct f75375_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
mutex_init(&data->update_lock);
data->kind = id->driver_data;
err = sysfs_create_group(&client->dev.kobj, &f75375_group);
if (err)
return err;
if (data->kind != f75373) {
err = sysfs_chmod_file(&client->dev.kobj,
&sensor_dev_attr_pwm1_mode.dev_attr.attr,
S_IRUGO | S_IWUSR);
if (err)
goto exit_remove;
err = sysfs_chmod_file(&client->dev.kobj,
&sensor_dev_attr_pwm2_mode.dev_attr.attr,
S_IRUGO | S_IWUSR);
if (err)
goto exit_remove;
}
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto exit_remove;
}
f75375_init(client, data, f75375s_pdata);
return 0;
exit_remove:
sysfs_remove_group(&client->dev.kobj, &f75375_group);
return err;
}
static int f75375_remove(struct i2c_client *client)
{
struct f75375_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &f75375_group);
return 0;
}
/* Return 0 if detection is successful, -ENODEV otherwise */
static int f75375_detect(struct i2c_client *client,
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
u16 vendid, chipid;
u8 version;
const char *name;
vendid = f75375_read16(client, F75375_REG_VENDOR);
chipid = f75375_read16(client, F75375_CHIP_ID);
if (vendid != 0x1934)
return -ENODEV;
if (chipid == 0x0306)
name = "f75375";
else if (chipid == 0x0204)
name = "f75373";
else if (chipid == 0x0410)
name = "f75387";
else
return -ENODEV;
version = f75375_read8(client, F75375_REG_VERSION);
dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
strlcpy(info->type, name, I2C_NAME_SIZE);
return 0;
}
module_i2c_driver(f75375_driver);
MODULE_AUTHOR("Riku Voipio");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");