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hwmon: Use i2c_smbus_{read,write}_word_swapped 

Make use of the new i2c_smbus_{read,write}_word_swapped functions.
This makes the driver code more compact and readable. It also ensures
proper error handling.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>
This commit is contained in:
Jean Delvare 2011-11-04 12:00:47 +01:00 committed by Jean Delvare
parent 371f2e083b
commit 90f4102ce5
19 changed files with 115 additions and 234 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/hwmon/ad7414.c
View File

@ -58,10 +58,9 @@ static inline int ad7414_temp_from_reg(s16 reg)
static inline int ad7414_read(struct i2c_client *client, u8 reg)
{
if (reg == AD7414_REG_TEMP) {
int value = i2c_smbus_read_word_data(client, reg);
return (value < 0) ? value : swab16(value);
} else
if (reg == AD7414_REG_TEMP)
return i2c_smbus_read_word_swapped(client, reg);
else
return i2c_smbus_read_byte_data(client, reg);
}

27
drivers/hwmon/ad7418.c
View File

@ -76,20 +76,6 @@ static struct i2c_driver ad7418_driver = {
.id_table = ad7418_id,
};
/* All registers are word-sized, except for the configuration registers.
* AD7418 uses a high-byte first convention. Do NOT use those functions to
* access the configuration registers CONF and CONF2, as they are byte-sized.
*/
static inline int ad7418_read(struct i2c_client *client, u8 reg)
{
return swab16(i2c_smbus_read_word_data(client, reg));
}
static inline int ad7418_write(struct i2c_client *client, u8 reg, u16 value)
{
return i2c_smbus_write_word_data(client, reg, swab16(value));
}
static void ad7418_init_client(struct i2c_client *client)
{
struct ad7418_data *data = i2c_get_clientdata(client);
@ -128,7 +114,9 @@ static struct ad7418_data *ad7418_update_device(struct device *dev)
udelay(30);
for (i = 0; i < 3; i++) {
data->temp[i] = ad7418_read(client, AD7418_REG_TEMP[i]);
data->temp[i] =
i2c_smbus_read_word_swapped(client,
AD7418_REG_TEMP[i]);
}
for (i = 0, ch = 4; i < data->adc_max; i++, ch--) {
@ -138,11 +126,12 @@ static struct ad7418_data *ad7418_update_device(struct device *dev)
udelay(15);
data->in[data->adc_max - 1 - i] =
ad7418_read(client, AD7418_REG_ADC);
i2c_smbus_read_word_swapped(client,
AD7418_REG_ADC);
}
/* restore old configuration value */
ad7418_write(client, AD7418_REG_CONF, cfg);
i2c_smbus_write_word_swapped(client, AD7418_REG_CONF, cfg);
data->last_updated = jiffies;
data->valid = 1;
@ -182,7 +171,9 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
mutex_lock(&data->lock);
data->temp[attr->index] = LM75_TEMP_TO_REG(temp);
ad7418_write(client, AD7418_REG_TEMP[attr->index], data->temp[attr->index]);
i2c_smbus_write_word_swapped(client,
AD7418_REG_TEMP[attr->index],
data->temp[attr->index]);
mutex_unlock(&data->lock);
return count;
}

21
drivers/hwmon/ads1015.c
View File

@ -59,19 +59,6 @@ struct ads1015_data {
struct ads1015_channel_data channel_data[ADS1015_CHANNELS];
};
static s32 ads1015_read_reg(struct i2c_client *client, unsigned int reg)
{
s32 data = i2c_smbus_read_word_data(client, reg);
return (data < 0) ? data : swab16(data);
}
static s32 ads1015_write_reg(struct i2c_client *client, unsigned int reg,
u16 val)
{
return i2c_smbus_write_word_data(client, reg, swab16(val));
}
static int ads1015_read_value(struct i2c_client *client, unsigned int channel,
int *value)
{
@ -87,7 +74,7 @@ static int ads1015_read_value(struct i2c_client *client, unsigned int channel,
mutex_lock(&data->update_lock);
/* get channel parameters */
res = ads1015_read_reg(client, ADS1015_CONFIG);
res = i2c_smbus_read_word_swapped(client, ADS1015_CONFIG);
if (res < 0)
goto err_unlock;
config = res;
@ -101,13 +88,13 @@ static int ads1015_read_value(struct i2c_client *client, unsigned int channel,
config |= (pga & 0x0007) << 9;
config |= (data_rate & 0x0007) << 5;
res = ads1015_write_reg(client, ADS1015_CONFIG, config);
res = i2c_smbus_write_word_swapped(client, ADS1015_CONFIG, config);
if (res < 0)
goto err_unlock;
/* wait until conversion finished */
msleep(conversion_time_ms);
res = ads1015_read_reg(client, ADS1015_CONFIG);
res = i2c_smbus_read_word_swapped(client, ADS1015_CONFIG);
if (res < 0)
goto err_unlock;
config = res;
@ -117,7 +104,7 @@ static int ads1015_read_value(struct i2c_client *client, unsigned int channel,
goto err_unlock;
}
res = ads1015_read_reg(client, ADS1015_CONVERSION);
res = i2c_smbus_read_word_swapped(client, ADS1015_CONVERSION);
if (res < 0)
goto err_unlock;
conversion = res;

12
drivers/hwmon/ads7828.c
View File

@ -74,13 +74,6 @@ static int ads7828_detect(struct i2c_client *client,
static int ads7828_probe(struct i2c_client *client,
const struct i2c_device_id *id);
/* The ADS7828 returns the 12-bit sample in two bytes,
these are read as a word then byte-swapped */
static u16 ads7828_read_value(struct i2c_client *client, u8 reg)
{
return swab16(i2c_smbus_read_word_data(client, reg));
}
static inline u8 channel_cmd_byte(int ch)
{
/* cmd byte C2,C1,C0 - see datasheet */
@ -104,7 +97,8 @@ static struct ads7828_data *ads7828_update_device(struct device *dev)
for (ch = 0; ch < ADS7828_NCH; ch++) {
u8 cmd = channel_cmd_byte(ch);
data->adc_input[ch] = ads7828_read_value(client, cmd);
data->adc_input[ch] =
i2c_smbus_read_word_swapped(client, cmd);
}
data->last_updated = jiffies;
data->valid = 1;
@ -203,7 +197,7 @@ static int ads7828_detect(struct i2c_client *client,
for (ch = 0; ch < ADS7828_NCH; ch++) {
u16 in_data;
u8 cmd = channel_cmd_byte(ch);
in_data = ads7828_read_value(client, cmd);
in_data = i2c_smbus_read_word_swapped(client, cmd);
if (in_data & 0xF000) {
pr_debug("%s : Doesn't look like an ads7828 device\n",
__func__);

10
drivers/hwmon/asb100.c
View File

@ -829,17 +829,17 @@ static int asb100_read_value(struct i2c_client *client, u16 reg)
/* convert from ISA to LM75 I2C addresses */
switch (reg & 0xff) {
case 0x50: /* TEMP */
res = swab16(i2c_smbus_read_word_data(cl, 0));
res = i2c_smbus_read_word_swapped(cl, 0);
break;
case 0x52: /* CONFIG */
res = i2c_smbus_read_byte_data(cl, 1);
break;
case 0x53: /* HYST */
res = swab16(i2c_smbus_read_word_data(cl, 2));
res = i2c_smbus_read_word_swapped(cl, 2);
break;
case 0x55: /* MAX */
default:
res = swab16(i2c_smbus_read_word_data(cl, 3));
res = i2c_smbus_read_word_swapped(cl, 3);
break;
}
}
@ -877,10 +877,10 @@ static void asb100_write_value(struct i2c_client *client, u16 reg, u16 value)
i2c_smbus_write_byte_data(cl, 1, value & 0xff);
break;
case 0x53: /* HYST */
i2c_smbus_write_word_data(cl, 2, swab16(value));
i2c_smbus_write_word_swapped(cl, 2, value);
break;
case 0x55: /* MAX */
i2c_smbus_write_word_data(cl, 3, swab16(value));
i2c_smbus_write_word_swapped(cl, 3, value);
break;
}
}

24
drivers/hwmon/ds1621.c
View File

@ -80,24 +80,6 @@ struct ds1621_data {
u8 conf; /* Register encoding, combined */
};
/* Temperature registers are word-sized.
DS1621 uses a high-byte first convention, which is exactly opposite to
the SMBus standard. */
static int ds1621_read_temp(struct i2c_client *client, u8 reg)
{
int ret;
ret = i2c_smbus_read_word_data(client, reg);
if (ret < 0)
return ret;
return swab16(ret);
}
static int ds1621_write_temp(struct i2c_client *client, u8 reg, u16 value)
{
return i2c_smbus_write_word_data(client, reg, swab16(value));
}
static void ds1621_init_client(struct i2c_client *client)
{
u8 conf, new_conf;
@ -136,7 +118,7 @@ static struct ds1621_data *ds1621_update_client(struct device *dev)
data->conf = i2c_smbus_read_byte_data(client, DS1621_REG_CONF);
for (i = 0; i < ARRAY_SIZE(data->temp); i++)
data->temp[i] = ds1621_read_temp(client,
data->temp[i] = i2c_smbus_read_word_swapped(client,
DS1621_REG_TEMP[i]);
/* reset alarms if necessary */
@ -177,8 +159,8 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
mutex_lock(&data->update_lock);
data->temp[attr->index] = val;
ds1621_write_temp(client, DS1621_REG_TEMP[attr->index],
data->temp[attr->index]);
i2c_smbus_write_word_swapped(client, DS1621_REG_TEMP[attr->index],
data->temp[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}

42
drivers/hwmon/ds620.c
View File

@ -75,33 +75,13 @@ struct ds620_data {
s16 temp[3]; /* Register values, word */
};
/*
* Temperature registers are word-sized.
* DS620 uses a high-byte first convention, which is exactly opposite to
* the SMBus standard.
*/
static int ds620_read_temp(struct i2c_client *client, u8 reg)
{
int ret;
ret = i2c_smbus_read_word_data(client, reg);
if (ret < 0)
return ret;
return swab16(ret);
}
static int ds620_write_temp(struct i2c_client *client, u8 reg, u16 value)
{
return i2c_smbus_write_word_data(client, reg, swab16(value));
}
static void ds620_init_client(struct i2c_client *client)
{
struct ds620_platform_data *ds620_info = client->dev.platform_data;
u16 conf, new_conf;
new_conf = conf =
swab16(i2c_smbus_read_word_data(client, DS620_REG_CONF));
i2c_smbus_read_word_swapped(client, DS620_REG_CONF);
/* switch to continuous conversion mode */
new_conf &= ~DS620_REG_CONFIG_1SHOT;
@ -118,8 +98,7 @@ static void ds620_init_client(struct i2c_client *client)
new_conf |= DS620_REG_CONFIG_R1 | DS620_REG_CONFIG_R0;
if (conf != new_conf)
i2c_smbus_write_word_data(client, DS620_REG_CONF,
swab16(new_conf));
i2c_smbus_write_word_swapped(client, DS620_REG_CONF, new_conf);
/* start conversion */
i2c_smbus_write_byte(client, DS620_COM_START);
@ -141,8 +120,8 @@ static struct ds620_data *ds620_update_client(struct device *dev)
dev_dbg(&client->dev, "Starting ds620 update\n");
for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
res = ds620_read_temp(client,
DS620_REG_TEMP[i]);
res = i2c_smbus_read_word_swapped(client,
DS620_REG_TEMP[i]);
if (res < 0) {
ret = ERR_PTR(res);
goto abort;
@ -191,8 +170,8 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
mutex_lock(&data->update_lock);
data->temp[attr->index] = val;
ds620_write_temp(client, DS620_REG_TEMP[attr->index],
data->temp[attr->index]);
i2c_smbus_write_word_swapped(client, DS620_REG_TEMP[attr->index],
data->temp[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
@ -210,16 +189,15 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *da,
return PTR_ERR(data);
/* reset alarms if necessary */
res = i2c_smbus_read_word_data(client, DS620_REG_CONF);
res = i2c_smbus_read_word_swapped(client, DS620_REG_CONF);
if (res < 0)
return res;
conf = swab16(res);
new_conf = conf;
new_conf = conf = res;
new_conf &= ~attr->index;
if (conf != new_conf) {
res = i2c_smbus_write_word_data(client, DS620_REG_CONF,
swab16(new_conf));
res = i2c_smbus_write_word_swapped(client, DS620_REG_CONF,
new_conf);
if (res < 0)
return res;
}

4
drivers/hwmon/gl518sm.c
View File

@ -591,7 +591,7 @@ static int gl518_remove(struct i2c_client *client)
static int gl518_read_value(struct i2c_client *client, u8 reg)
{
if ((reg >= 0x07) && (reg <= 0x0c))
return swab16(i2c_smbus_read_word_data(client, reg));
return i2c_smbus_read_word_swapped(client, reg);
else
return i2c_smbus_read_byte_data(client, reg);
}
@ -599,7 +599,7 @@ static int gl518_read_value(struct i2c_client *client, u8 reg)
static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value)
{
if ((reg >= 0x07) && (reg <= 0x0c))
return i2c_smbus_write_word_data(client, reg, swab16(value));
return i2c_smbus_write_word_swapped(client, reg, value);
else
return i2c_smbus_write_byte_data(client, reg, value);
}

4
drivers/hwmon/gl520sm.c
View File

@ -821,7 +821,7 @@ static int gl520_remove(struct i2c_client *client)
static int gl520_read_value(struct i2c_client *client, u8 reg)
{
if ((reg >= 0x07) && (reg <= 0x0c))
return swab16(i2c_smbus_read_word_data(client, reg));
return i2c_smbus_read_word_swapped(client, reg);
else
return i2c_smbus_read_byte_data(client, reg);
}
@ -829,7 +829,7 @@ static int gl520_read_value(struct i2c_client *client, u8 reg)
static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
{
if ((reg >= 0x07) && (reg <= 0x0c))
return i2c_smbus_write_word_data(client, reg, swab16(value));
return i2c_smbus_write_word_swapped(client, reg, value);
else
return i2c_smbus_write_byte_data(client, reg, value);
}

52
drivers/hwmon/jc42.c
View File

@ -154,8 +154,6 @@ static int jc42_probe(struct i2c_client *client,
const struct i2c_device_id *id);
static int jc42_detect(struct i2c_client *client, struct i2c_board_info *info);
static int jc42_remove(struct i2c_client *client);
static int jc42_read_value(struct i2c_client *client, u8 reg);
static int jc42_write_value(struct i2c_client *client, u8 reg, u16 value);
static struct jc42_data *jc42_update_device(struct device *dev);
@ -187,7 +185,7 @@ static int jc42_suspend(struct device *dev)
struct jc42_data *data = i2c_get_clientdata(client);
data->config |= JC42_CFG_SHUTDOWN;
jc42_write_value(client, JC42_REG_CONFIG, data->config);
i2c_smbus_write_word_swapped(client, JC42_REG_CONFIG, data->config);
return 0;
}
@ -197,7 +195,7 @@ static int jc42_resume(struct device *dev)
struct jc42_data *data = i2c_get_clientdata(client);
data->config &= ~JC42_CFG_SHUTDOWN;
jc42_write_value(client, JC42_REG_CONFIG, data->config);
i2c_smbus_write_word_swapped(client, JC42_REG_CONFIG, data->config);
return 0;
}
@ -315,7 +313,7 @@ static ssize_t set_##value(struct device *dev, \
return -EINVAL; \
mutex_lock(&data->update_lock); \
data->value = jc42_temp_to_reg(val, data->extended); \
err = jc42_write_value(client, reg, data->value); \
err = i2c_smbus_write_word_swapped(client, reg, data->value); \
if (err < 0) \
ret = err; \
mutex_unlock(&data->update_lock); \
@ -357,7 +355,8 @@ static ssize_t set_temp_crit_hyst(struct device *dev,
data->config = (data->config
& ~(JC42_CFG_HYST_MASK << JC42_CFG_HYST_SHIFT))
| (hyst << JC42_CFG_HYST_SHIFT);
err = jc42_write_value(client, JC42_REG_CONFIG, data->config);
err = i2c_smbus_write_word_swapped(client, JC42_REG_CONFIG,
data->config);
if (err < 0)
ret = err;
mutex_unlock(&data->update_lock);
@ -452,10 +451,10 @@ static int jc42_detect(struct i2c_client *new_client,
I2C_FUNC_SMBUS_WORD_DATA))
return -ENODEV;
cap = jc42_read_value(new_client, JC42_REG_CAP);
config = jc42_read_value(new_client, JC42_REG_CONFIG);
manid = jc42_read_value(new_client, JC42_REG_MANID);
devid = jc42_read_value(new_client, JC42_REG_DEVICEID);
cap = i2c_smbus_read_word_swapped(new_client, JC42_REG_CAP);
config = i2c_smbus_read_word_swapped(new_client, JC42_REG_CONFIG);
manid = i2c_smbus_read_word_swapped(new_client, JC42_REG_MANID);
devid = i2c_smbus_read_word_swapped(new_client, JC42_REG_DEVICEID);
if (cap < 0 || config < 0 || manid < 0 || devid < 0)
return -ENODEV;
@ -489,14 +488,14 @@ static int jc42_probe(struct i2c_client *new_client,
i2c_set_clientdata(new_client, data);
mutex_init(&data->update_lock);
cap = jc42_read_value(new_client, JC42_REG_CAP);
cap = i2c_smbus_read_word_swapped(new_client, JC42_REG_CAP);
if (cap < 0) {
err = -EINVAL;
goto exit_free;
}
data->extended = !!(cap & JC42_CAP_RANGE);
config = jc42_read_value(new_client, JC42_REG_CONFIG);
config = i2c_smbus_read_word_swapped(new_client, JC42_REG_CONFIG);
if (config < 0) {
err = -EINVAL;
goto exit_free;
@ -504,7 +503,8 @@ static int jc42_probe(struct i2c_client *new_client,
data->orig_config = config;
if (config & JC42_CFG_SHUTDOWN) {
config &= ~JC42_CFG_SHUTDOWN;
jc42_write_value(new_client, JC42_REG_CONFIG, config);
i2c_smbus_write_word_swapped(new_client, JC42_REG_CONFIG,
config);
}
data->config = config;
@ -535,25 +535,12 @@ static int jc42_remove(struct i2c_client *client)
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &jc42_group);
if (data->config != data->orig_config)
jc42_write_value(client, JC42_REG_CONFIG, data->orig_config);
i2c_smbus_write_word_swapped(client, JC42_REG_CONFIG,
data->orig_config);
kfree(data);
return 0;
}
/* All registers are word-sized. */
static int jc42_read_value(struct i2c_client *client, u8 reg)
{
int ret = i2c_smbus_read_word_data(client, reg);
if (ret < 0)
return ret;
return swab16(ret);
}
static int jc42_write_value(struct i2c_client *client, u8 reg, u16 value)
{
return i2c_smbus_write_word_data(client, reg, swab16(value));
}
static struct jc42_data *jc42_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
@ -564,28 +551,29 @@ static struct jc42_data *jc42_update_device(struct device *dev)
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
val = jc42_read_value(client, JC42_REG_TEMP);
val = i2c_smbus_read_word_swapped(client, JC42_REG_TEMP);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;
}
data->temp_input = val;
val = jc42_read_value(client, JC42_REG_TEMP_CRITICAL);
val = i2c_smbus_read_word_swapped(client,
JC42_REG_TEMP_CRITICAL);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;
}
data->temp_crit = val;
val = jc42_read_value(client, JC42_REG_TEMP_LOWER);
val = i2c_smbus_read_word_swapped(client, JC42_REG_TEMP_LOWER);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;
}
data->temp_min = val;
val = jc42_read_value(client, JC42_REG_TEMP_UPPER);
val = i2c_smbus_read_word_swapped(client, JC42_REG_TEMP_UPPER);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;

8
drivers/hwmon/lm73.c
View File

@ -34,7 +34,7 @@ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4c,
#define LM73_REG_CTRL 0x04
#define LM73_REG_ID 0x07
#define LM73_ID 0x9001 /* or 0x190 after a swab16() */
#define LM73_ID 0x9001 /* 0x0190, byte-swapped */
#define DRVNAME "lm73"
#define LM73_TEMP_MIN (-40)
#define LM73_TEMP_MAX 150
@ -57,7 +57,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
/* Write value */
value = (short) SENSORS_LIMIT(temp/250, (LM73_TEMP_MIN*4),
(LM73_TEMP_MAX*4)) << 5;
i2c_smbus_write_word_data(client, attr->index, swab16(value));
i2c_smbus_write_word_swapped(client, attr->index, value);
return count;
}
@ -68,8 +68,8 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *da,
struct i2c_client *client = to_i2c_client(dev);
/* use integer division instead of equivalent right shift to
guarantee arithmetic shift and preserve the sign */
int temp = ((s16) (swab16(i2c_smbus_read_word_data(client,
attr->index)))*250) / 32;
int temp = ((s16) (i2c_smbus_read_word_swapped(client,
attr->index))*250) / 32;
return sprintf(buf, "%d\n", temp);
}

9
drivers/hwmon/lm75.c
View File

@ -384,13 +384,10 @@ static struct i2c_driver lm75_driver = {
*/
static int lm75_read_value(struct i2c_client *client, u8 reg)
{
int value;
if (reg == LM75_REG_CONF)
return i2c_smbus_read_byte_data(client, reg);
value = i2c_smbus_read_word_data(client, reg);
return (value < 0) ? value : swab16(value);
else
return i2c_smbus_read_word_swapped(client, reg);
}
static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value)
@ -398,7 +395,7 @@ static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value)
if (reg == LM75_REG_CONF)
return i2c_smbus_write_byte_data(client, reg, value);
else
return i2c_smbus_write_word_data(client, reg, swab16(value));
return i2c_smbus_write_word_swapped(client, reg, value);
}
static struct lm75_data *lm75_update_device(struct device *dev)

4
drivers/hwmon/lm77.c
View File

@ -365,7 +365,7 @@ static u16 lm77_read_value(struct i2c_client *client, u8 reg)
if (reg == LM77_REG_CONF)
return i2c_smbus_read_byte_data(client, reg);
else
return swab16(i2c_smbus_read_word_data(client, reg));
return i2c_smbus_read_word_swapped(client, reg);
}
static int lm77_write_value(struct i2c_client *client, u8 reg, u16 value)
@ -373,7 +373,7 @@ static int lm77_write_value(struct i2c_client *client, u8 reg, u16 value)
if (reg == LM77_REG_CONF)
return i2c_smbus_write_byte_data(client, reg, value);
else
return i2c_smbus_write_word_data(client, reg, swab16(value));
return i2c_smbus_write_word_swapped(client, reg, value);
}
static void lm77_init_client(struct i2c_client *client)

26
drivers/hwmon/lm92.c
View File

@ -117,16 +117,16 @@ static struct lm92_data *lm92_update_device(struct device *dev)
if (time_after(jiffies, data->last_updated + HZ)
|| !data->valid) {
dev_dbg(&client->dev, "Updating lm92 data\n");
data->temp1_input = swab16(i2c_smbus_read_word_data(client,
LM92_REG_TEMP));
data->temp1_hyst = swab16(i2c_smbus_read_word_data(client,
LM92_REG_TEMP_HYST));
data->temp1_crit = swab16(i2c_smbus_read_word_data(client,
LM92_REG_TEMP_CRIT));
data->temp1_min = swab16(i2c_smbus_read_word_data(client,
LM92_REG_TEMP_LOW));
data->temp1_max = swab16(i2c_smbus_read_word_data(client,
LM92_REG_TEMP_HIGH));
data->temp1_input = i2c_smbus_read_word_swapped(client,
LM92_REG_TEMP);
data->temp1_hyst = i2c_smbus_read_word_swapped(client,
LM92_REG_TEMP_HYST);
data->temp1_crit = i2c_smbus_read_word_swapped(client,
LM92_REG_TEMP_CRIT);
data->temp1_min = i2c_smbus_read_word_swapped(client,
LM92_REG_TEMP_LOW);
data->temp1_max = i2c_smbus_read_word_swapped(client,
LM92_REG_TEMP_HIGH);
data->last_updated = jiffies;
data->valid = 1;
@ -158,7 +158,7 @@ static ssize_t set_##value(struct device *dev, struct device_attribute *attr, co
\
mutex_lock(&data->update_lock); \
data->value = TEMP_TO_REG(val); \
i2c_smbus_write_word_data(client, reg, swab16(data->value)); \
i2c_smbus_write_word_swapped(client, reg, data->value); \
mutex_unlock(&data->update_lock); \
return count; \
}
@ -194,8 +194,8 @@ static ssize_t set_temp1_crit_hyst(struct device *dev, struct device_attribute *
mutex_lock(&data->update_lock);
data->temp1_hyst = TEMP_FROM_REG(data->temp1_crit) - val;
i2c_smbus_write_word_data(client, LM92_REG_TEMP_HYST,
swab16(TEMP_TO_REG(data->temp1_hyst)));
i2c_smbus_write_word_swapped(client, LM92_REG_TEMP_HYST,
TEMP_TO_REG(data->temp1_hyst));
mutex_unlock(&data->update_lock);
return count;
}

4
drivers/hwmon/max16065.c
View File

@ -137,10 +137,10 @@ static int max16065_read_adc(struct i2c_client *client, int reg)
{
int rv;
rv = i2c_smbus_read_word_data(client, reg);
rv = i2c_smbus_read_word_swapped(client, reg);
if (unlikely(rv < 0))
return rv;
return ((rv & 0xff) << 2) | ((rv >> 14) & 0x03);
return rv >> 6;
}
static struct max16065_data *max16065_update_device(struct device *dev)

26
drivers/hwmon/sht21.c
View File

@ -82,25 +82,6 @@ static inline int sht21_rh_ticks_to_per_cent_mille(int ticks)
return ((15625 * ticks) >> 13) - 6000;
}
/**
* sht21_read_word_data() - read word from register
* @client: I2C client device
* @reg: I2C command byte
*
* Returns value, negative errno on error.
*/
static inline int sht21_read_word_data(struct i2c_client *client, u8 reg)
{
int ret = i2c_smbus_read_word_data(client, reg);
if (ret < 0)
return ret;
/*
* SMBus specifies low byte first, but the SHT21 returns MSB
* first, so we have to swab16 the values
*/
return swab16(ret);
}
/**
* sht21_update_measurements() - get updated measurements from device
* @client: I2C client device
@ -119,12 +100,13 @@ static int sht21_update_measurements(struct i2c_client *client)
* maximum two measurements per second at 12bit accuracy shall be made.
*/
if (time_after(jiffies, sht21->last_update + HZ / 2) || !sht21->valid) {
ret = sht21_read_word_data(client, SHT21_TRIG_T_MEASUREMENT_HM);
ret = i2c_smbus_read_word_swapped(client,
SHT21_TRIG_T_MEASUREMENT_HM);
if (ret < 0)
goto out;
sht21->temperature = sht21_temp_ticks_to_millicelsius(ret);
ret = sht21_read_word_data(client,
SHT21_TRIG_RH_MEASUREMENT_HM);
ret = i2c_smbus_read_word_swapped(client,
SHT21_TRIG_RH_MEASUREMENT_HM);
if (ret < 0)
goto out;
sht21->humidity = sht21_rh_ticks_to_per_cent_mille(ret);

15
drivers/hwmon/smm665.c
View File

@ -214,33 +214,26 @@ static int smm665_read_adc(struct smm665_data *data, int adc)
*
* Neither i2c_smbus_read_byte() nor
* i2c_smbus_read_block_data() worked here,
* so use i2c_smbus_read_word_data() instead.
* so use i2c_smbus_read_word_swapped() instead.
* We could also try to use i2c_master_recv(),
* but that is not always supported.
*/
rv = i2c_smbus_read_word_data(client, 0);
rv = i2c_smbus_read_word_swapped(client, 0);
if (rv < 0) {
dev_dbg(&client->dev, "Failed to read ADC value: error %d", rv);
return -1;
}
/*
* Validate/verify readback adc channel (in bit 11..14).
* High byte is in lower 8 bit of rv, so only shift by 3.
*/
radc = (rv >> 3) & 0x0f;
radc = (rv >> 11) & 0x0f;
if (radc != adc) {
dev_dbg(&client->dev, "Unexpected RADC: Expected %d got %d",
adc, radc);
return -EIO;
}
/*
* Chip replies with H/L, while SMBus expects L/H.
* Thus, byte order is reversed, and we have to swap
* the result.
*/
rv = swab16(rv) & SMM665_ADC_MASK;
return rv;
return rv & SMM665_ADC_MASK;
}
static struct smm665_data *smm665_update_device(struct device *dev)

44
drivers/hwmon/tmp102.c
View File

@ -55,19 +55,6 @@ struct tmp102 {
int temp[3];
};
/* SMBus specifies low byte first, but the TMP102 returns high byte first,
* so we have to swab16 the values */
static inline int tmp102_read_reg(struct i2c_client *client, u8 reg)
{
int result = i2c_smbus_read_word_data(client, reg);
return result < 0 ? result : swab16(result);
}
static inline int tmp102_write_reg(struct i2c_client *client, u8 reg, u16 val)
{
return i2c_smbus_write_word_data(client, reg, swab16(val));
}
/* convert left adjusted 13-bit TMP102 register value to milliCelsius */
static inline int tmp102_reg_to_mC(s16 val)
{
@ -94,7 +81,8 @@ static struct tmp102 *tmp102_update_device(struct i2c_client *client)
if (time_after(jiffies, tmp102->last_update + HZ / 3)) {
int i;
for (i = 0; i < ARRAY_SIZE(tmp102->temp); ++i) {
int status = tmp102_read_reg(client, tmp102_reg[i]);
int status = i2c_smbus_read_word_swapped(client,
tmp102_reg[i]);
if (status > -1)
tmp102->temp[i] = tmp102_reg_to_mC(status);
}
@ -130,8 +118,8 @@ static ssize_t tmp102_set_temp(struct device *dev,
mutex_lock(&tmp102->lock);
tmp102->temp[sda->index] = val;
status = tmp102_write_reg(client, tmp102_reg[sda->index],
tmp102_mC_to_reg(val));
status = i2c_smbus_write_word_swapped(client, tmp102_reg[sda->index],
tmp102_mC_to_reg(val));
mutex_unlock(&tmp102->lock);
return status ? : count;
}
@ -178,18 +166,19 @@ static int __devinit tmp102_probe(struct i2c_client *client,
}
i2c_set_clientdata(client, tmp102);
status = tmp102_read_reg(client, TMP102_CONF_REG);
status = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG);
if (status < 0) {
dev_err(&client->dev, "error reading config register\n");
goto fail_free;
}
tmp102->config_orig = status;
status = tmp102_write_reg(client, TMP102_CONF_REG, TMP102_CONFIG);
status = i2c_smbus_write_word_swapped(client, TMP102_CONF_REG,
TMP102_CONFIG);
if (status < 0) {
dev_err(&client->dev, "error writing config register\n");
goto fail_restore_config;
}
status = tmp102_read_reg(client, TMP102_CONF_REG);
status = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG);
if (status < 0) {
dev_err(&client->dev, "error reading config register\n");
goto fail_restore_config;
@ -222,7 +211,8 @@ static int __devinit tmp102_probe(struct i2c_client *client,
fail_remove_sysfs:
sysfs_remove_group(&client->dev.kobj, &tmp102_attr_group);
fail_restore_config:
tmp102_write_reg(client, TMP102_CONF_REG, tmp102->config_orig);
i2c_smbus_write_word_swapped(client, TMP102_CONF_REG,
tmp102->config_orig);
fail_free:
kfree(tmp102);
@ -240,10 +230,10 @@ static int __devexit tmp102_remove(struct i2c_client *client)
if (tmp102->config_orig & TMP102_CONF_SD) {
int config;
config = tmp102_read_reg(client, TMP102_CONF_REG);
config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG);
if (config >= 0)
tmp102_write_reg(client, TMP102_CONF_REG,
config | TMP102_CONF_SD);
i2c_smbus_write_word_swapped(client, TMP102_CONF_REG,
config | TMP102_CONF_SD);
}
kfree(tmp102);
@ -257,12 +247,12 @@ static int tmp102_suspend(struct device *dev)
struct i2c_client *client = to_i2c_client(dev);
int config;
config = tmp102_read_reg(client, TMP102_CONF_REG);
config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG);
if (config < 0)
return config;
config |= TMP102_CONF_SD;
return tmp102_write_reg(client, TMP102_CONF_REG, config);
return i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, config);
}
static int tmp102_resume(struct device *dev)
@ -270,12 +260,12 @@ static int tmp102_resume(struct device *dev)
struct i2c_client *client = to_i2c_client(dev);
int config;
config = tmp102_read_reg(client, TMP102_CONF_REG);
config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG);
if (config < 0)
return config;
config &= ~TMP102_CONF_SD;
return tmp102_write_reg(client, TMP102_CONF_REG, config);
return i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, config);
}
static const struct dev_pm_ops tmp102_dev_pm_ops = {

10
drivers/hwmon/w83781d.c
View File

@ -1245,17 +1245,17 @@ w83781d_read_value_i2c(struct w83781d_data *data, u16 reg)
/* convert from ISA to LM75 I2C addresses */
switch (reg & 0xff) {
case 0x50: /* TEMP */
res = swab16(i2c_smbus_read_word_data(cl, 0));
res = i2c_smbus_read_word_swapped(cl, 0);
break;
case 0x52: /* CONFIG */
res = i2c_smbus_read_byte_data(cl, 1);
break;
case 0x53: /* HYST */
res = swab16(i2c_smbus_read_word_data(cl, 2));
res = i2c_smbus_read_word_swapped(cl, 2);
break;
case 0x55: /* OVER */
default:
res = swab16(i2c_smbus_read_word_data(cl, 3));
res = i2c_smbus_read_word_swapped(cl, 3);
break;
}
}
@ -1289,10 +1289,10 @@ w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value)
i2c_smbus_write_byte_data(cl, 1, value & 0xff);
break;
case 0x53: /* HYST */
i2c_smbus_write_word_data(cl, 2, swab16(value));
i2c_smbus_write_word_swapped(cl, 2, value);
break;
case 0x55: /* OVER */
i2c_smbus_write_word_data(cl, 3, swab16(value));
i2c_smbus_write_word_swapped(cl, 3, value);
break;
}
}