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hwmon: (adm1021) dynamic sysfs callbacks conversion
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This is conversion of the driver  to the dynamic sysfs callbacks.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
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Krzysztof Helt authored and Mark M. Hoffman committed Oct 10, 2007
1 parent bba891c commit a8d6646
Showing 1 changed file with 106 additions and 88 deletions.
194 changes: 106 additions & 88 deletions drivers/hwmon/adm1021.c
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>

Expand All @@ -43,8 +44,8 @@ I2C_CLIENT_INSMOD_8(adm1021, adm1023, max1617, max1617a, thmc10, lm84, gl523sm,

/* The adm1021 registers */
/* Read-only */
#define ADM1021_REG_TEMP 0x00
#define ADM1021_REG_REMOTE_TEMP 0x01
/* For nr in 0-1 */
#define ADM1021_REG_TEMP(nr) (nr)
#define ADM1021_REG_STATUS 0x02
/* 0x41 = AD, 0x49 = TI, 0x4D = Maxim, 0x23 = Genesys , 0x54 = Onsemi */
#define ADM1021_REG_MAN_ID 0xFE
Expand All @@ -62,25 +63,14 @@ I2C_CLIENT_INSMOD_8(adm1021, adm1023, max1617, max1617a, thmc10, lm84, gl523sm,
#define ADM1023_REG_REM_TOS_PREC 0x13
#define ADM1023_REG_REM_THYST_PREC 0x14
/* limits */
#define ADM1021_REG_TOS_R 0x05
#define ADM1021_REG_TOS_W 0x0B
#define ADM1021_REG_REMOTE_TOS_R 0x07
#define ADM1021_REG_REMOTE_TOS_W 0x0D
#define ADM1021_REG_THYST_R 0x06
#define ADM1021_REG_THYST_W 0x0C
#define ADM1021_REG_REMOTE_THYST_R 0x08
#define ADM1021_REG_REMOTE_THYST_W 0x0E
/* For nr in 0-1 */
#define ADM1021_REG_TOS_R(nr) (0x05 + 2 * (nr))
#define ADM1021_REG_TOS_W(nr) (0x0B + 2 * (nr))
#define ADM1021_REG_THYST_R(nr) (0x06 + 2 * (nr))
#define ADM1021_REG_THYST_W(nr) (0x0C + 2 * (nr))
/* write-only */
#define ADM1021_REG_ONESHOT 0x0F


/* Conversions. Rounding and 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 note: 1021 uses normal integer signed-byte format*/
#define TEMP_TO_REG(val) SENSORS_LIMIT((val) / 1000, -128, 127)

/* Initial values */

/* Note: Even though I left the low and high limits named os and hyst,
Expand All @@ -98,19 +88,16 @@ struct adm1021_data {
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */

s8 temp_max; /* Register values */
s8 temp_hyst;
s8 temp_input;
s8 remote_temp_max;
s8 remote_temp_hyst;
s8 remote_temp_input;
u8 alarms;
/* Special values for ADM1023 only */
u8 remote_temp_prec;
u8 remote_temp_os_prec;
u8 remote_temp_hyst_prec;
u8 remote_temp_offset;
u8 remote_temp_offset_prec;
s8 temp_max[2]; /* Register values */
s8 temp_min[2];
s8 temp[2];
u8 alarms;
/* Special values for ADM1023 only */
u8 remote_temp_prec;
u8 remote_temp_os_prec;
u8 remote_temp_hyst_prec;
u8 remote_temp_offset;
u8 remote_temp_offset_prec;
};

static int adm1021_attach_adapter(struct i2c_adapter *adapter);
Expand All @@ -133,19 +120,32 @@ static struct i2c_driver adm1021_driver = {
.detach_client = adm1021_detach_client,
};

#define show(value) \
static ssize_t show_##value(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct adm1021_data *data = adm1021_update_device(dev); \
return sprintf(buf, "%d\n", 1000 * data->value); \
static ssize_t show_temp(struct device *dev,
struct device_attribute *devattr, char *buf)
{
int index = to_sensor_dev_attr(devattr)->index;
struct adm1021_data *data = adm1021_update_device(dev);

return sprintf(buf, "%d\n", 1000 * data->temp[index]);
}

static ssize_t show_temp_max(struct device *dev,
struct device_attribute *devattr, char *buf)
{
int index = to_sensor_dev_attr(devattr)->index;
struct adm1021_data *data = adm1021_update_device(dev);

return sprintf(buf, "%d\n", 1000 * data->temp_max[index]);
}

static ssize_t show_temp_min(struct device *dev,
struct device_attribute *devattr, char *buf)
{
int index = to_sensor_dev_attr(devattr)->index;
struct adm1021_data *data = adm1021_update_device(dev);

return sprintf(buf, "%d\n", 1000 * data->temp_min[index]);
}
show(temp_max);
show(temp_hyst);
show(temp_input);
show(remote_temp_max);
show(remote_temp_hyst);
show(remote_temp_input);

static ssize_t show_alarms(struct device *dev,
struct device_attribute *attr,
Expand All @@ -155,35 +155,55 @@ static ssize_t show_alarms(struct device *dev,
return sprintf(buf, "%u\n", data->alarms);
}

#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 adm1021_data *data = i2c_get_clientdata(client); \
long temp = simple_strtol(buf, NULL, 10); \
\
mutex_lock(&data->update_lock); \
data->value = TEMP_TO_REG(temp); \
if (!read_only) \
i2c_smbus_write_byte_data(client, reg, data->value); \
mutex_unlock(&data->update_lock); \
return count; \
static ssize_t set_temp_max(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(devattr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct adm1021_data *data = i2c_get_clientdata(client);
long temp = simple_strtol(buf, NULL, 10) / 1000;

mutex_lock(&data->update_lock);
data->temp_max[index] = SENSORS_LIMIT(temp, -128, 127);
if (!read_only)
i2c_smbus_write_byte_data(client, ADM1021_REG_TOS_W(index),
data->temp_max[index]);
mutex_unlock(&data->update_lock);

return count;
}
set(temp_max, ADM1021_REG_TOS_W);
set(temp_hyst, ADM1021_REG_THYST_W);
set(remote_temp_max, ADM1021_REG_REMOTE_TOS_W);
set(remote_temp_hyst, ADM1021_REG_REMOTE_THYST_W);

static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, set_temp_max);
static DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_hyst, set_temp_hyst);
static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL);
static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_remote_temp_max, set_remote_temp_max);
static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_remote_temp_hyst, set_remote_temp_hyst);
static DEVICE_ATTR(temp2_input, S_IRUGO, show_remote_temp_input, NULL);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);

static ssize_t set_temp_min(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(devattr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct adm1021_data *data = i2c_get_clientdata(client);
long temp = simple_strtol(buf, NULL, 10) / 1000;

mutex_lock(&data->update_lock);
data->temp_min[index] = SENSORS_LIMIT(temp, -128, 127);
if (!read_only)
i2c_smbus_write_byte_data(client, ADM1021_REG_THYST_W(index),
data->temp_min[index]);
mutex_unlock(&data->update_lock);

return count;
}

static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
set_temp_max, 0);
static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
set_temp_min, 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
set_temp_max, 1);
static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
set_temp_min, 1);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);

static int adm1021_attach_adapter(struct i2c_adapter *adapter)
{
Expand All @@ -193,12 +213,12 @@ static int adm1021_attach_adapter(struct i2c_adapter *adapter)
}

static struct attribute *adm1021_attributes[] = {
&dev_attr_temp1_max.attr,
&dev_attr_temp1_min.attr,
&dev_attr_temp1_input.attr,
&dev_attr_temp2_max.attr,
&dev_attr_temp2_min.attr,
&dev_attr_temp2_input.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&dev_attr_alarms.attr,
NULL
};
Expand Down Expand Up @@ -370,20 +390,18 @@ static struct adm1021_data *adm1021_update_device(struct device *dev)

if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
int i;

dev_dbg(&client->dev, "Starting adm1021 update\n");

data->temp_input = i2c_smbus_read_byte_data(client,
ADM1021_REG_TEMP);
data->temp_max = i2c_smbus_read_byte_data(client,
ADM1021_REG_TOS_R);
data->temp_hyst = i2c_smbus_read_byte_data(client,
ADM1021_REG_THYST_R);
data->remote_temp_input = i2c_smbus_read_byte_data(client,
ADM1021_REG_REMOTE_TEMP);
data->remote_temp_max = i2c_smbus_read_byte_data(client,
ADM1021_REG_REMOTE_TOS_R);
data->remote_temp_hyst = i2c_smbus_read_byte_data(client,
ADM1021_REG_REMOTE_THYST_R);
for (i = 0; i < 2; i++) {
data->temp[i] = i2c_smbus_read_byte_data(client,
ADM1021_REG_TEMP(i));
data->temp_max[i] = i2c_smbus_read_byte_data(client,
ADM1021_REG_TOS_R(i));
data->temp_min[i] = i2c_smbus_read_byte_data(client,
ADM1021_REG_THYST_R(i));
}
data->alarms = i2c_smbus_read_byte_data(client,
ADM1021_REG_STATUS) & 0x7c;
if (data->type == adm1023) {
Expand Down

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