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hwmon: (adm1031) Various cleanups

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* Rename new_client to client
* Drop redundant initializations to 0
* Drop trailing space
* Other whitespace cleanups
* Split/fold a few long lines
* Constify static data
* Optimizations in set_fan_div()

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
Jean Delvare
2007-12-02 23:33:57 +01:00
committed by Mark M. Hoffman
parent 38a1f0e9ae
commit 6d6006b8db
1 changed files with 62 additions and 64 deletions
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88
drivers/hwmon/adm1031.c
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@@ -36,18 +36,18 @@
#define ADM1031_REG_PWM (0x22) #define ADM1031_REG_PWM (0x22)
#define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr)) #define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr))
#define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4*(nr)) #define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4 * (nr))
#define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4*(nr)) #define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4 * (nr))
#define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4*(nr)) #define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4 * (nr))
#define ADM1031_REG_TEMP(nr) (0xa + (nr)) #define ADM1031_REG_TEMP(nr) (0x0a + (nr))
#define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr)) #define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
#define ADM1031_REG_STATUS(nr) (0x2 + (nr)) #define ADM1031_REG_STATUS(nr) (0x2 + (nr))
#define ADM1031_REG_CONF1 0x0 #define ADM1031_REG_CONF1 0x00
#define ADM1031_REG_CONF2 0x1 #define ADM1031_REG_CONF2 0x01
#define ADM1031_REG_EXT_TEMP 0x6 #define ADM1031_REG_EXT_TEMP 0x06
#define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */ #define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */
#define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */ #define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */
@@ -78,7 +78,7 @@ struct adm1031_data {
/* The chan_select_table contains the possible configurations for /* The chan_select_table contains the possible configurations for
* auto fan control. * auto fan control.
*/ */
auto_chan_table_t *chan_select_table; const auto_chan_table_t *chan_select_table;
u16 alarm; u16 alarm;
u8 conf1; u8 conf1;
u8 conf2; u8 conf2;
@@ -186,20 +186,20 @@ static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm)
* MSb is the auto fan control enable bit, so the four first entries * MSb is the auto fan control enable bit, so the four first entries
* in the table disables auto fan control when both bitfields are zero. * in the table disables auto fan control when both bitfields are zero.
*/ */
static auto_chan_table_t auto_channel_select_table_adm1031 = { static const auto_chan_table_t auto_channel_select_table_adm1031 = {
{0, 0}, {0, 0}, {0, 0}, {0, 0}, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{2 /*0b010 */ , 4 /*0b100 */ }, { 2 /* 0b010 */ , 4 /* 0b100 */ },
{2 /*0b010 */ , 2 /*0b010 */ }, { 2 /* 0b010 */ , 2 /* 0b010 */ },
{4 /*0b100 */ , 4 /*0b100 */ }, { 4 /* 0b100 */ , 4 /* 0b100 */ },
{7 /*0b111 */ , 7 /*0b111 */ }, { 7 /* 0b111 */ , 7 /* 0b111 */ },
}; };
static auto_chan_table_t auto_channel_select_table_adm1030 = { static const auto_chan_table_t auto_channel_select_table_adm1030 = {
{0, 0}, {0, 0}, {0, 0}, {0, 0}, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{2 /*0b10 */ , 0}, { 2 /* 0b10 */ , 0 },
{0xff /*invalid */ , 0}, { 0xff /* invalid */ , 0 },
{0xff /*invalid */ , 0}, { 0xff /* invalid */ , 0 },
{3 /*0b11 */ , 0}, { 3 /* 0b11 */ , 0 },
}; };
/* That function checks if a bitfield is valid and returns the other bitfield /* That function checks if a bitfield is valid and returns the other bitfield
@@ -228,8 +228,8 @@ get_fan_auto_nearest(struct adm1031_data *data,
break; break;
} else if (val == (*data->chan_select_table)[i][chan] && } else if (val == (*data->chan_select_table)[i][chan] &&
first_match == -1) { first_match == -1) {
/* Save the first match in case of an exact match has not been /* Save the first match in case of an exact match has
* found * not been found
*/ */
first_match = i; first_match = i;
} }
@@ -269,7 +269,8 @@ set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
mutex_unlock(&data->update_lock); mutex_unlock(&data->update_lock);
return ret; return ret;
} }
if (((data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1)) & ADM1031_CONF1_AUTO_MODE) ^ data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) ^
(old_fan_mode & ADM1031_CONF1_AUTO_MODE)) { (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) {
if (data->conf1 & ADM1031_CONF1_AUTO_MODE){ if (data->conf1 & ADM1031_CONF1_AUTO_MODE){
/* Switch to Auto Fan Mode /* Switch to Auto Fan Mode
@@ -550,9 +551,8 @@ set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
/* Write the new clock divider and fan min */ /* Write the new clock divider and fan min */
old_div = FAN_DIV_FROM_REG(data->fan_div[nr]); old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]); data->fan_div[nr] = tmp | (0x3f & data->fan_div[nr]);
new_min = data->fan_min[nr] * old_div / new_min = data->fan_min[nr] * old_div / val;
FAN_DIV_FROM_REG(data->fan_div[nr]);
data->fan_min[nr] = new_min > 0xff ? 0xff : new_min; data->fan_min[nr] = new_min > 0xff ? 0xff : new_min;
adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr), adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr),
@@ -796,7 +796,7 @@ static const struct attribute_group adm1031_group_opt = {
/* This function is called by i2c_probe */ /* This function is called by i2c_probe */
static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind) static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
{ {
struct i2c_client *new_client; struct i2c_client *client;
struct adm1031_data *data; struct adm1031_data *data;
int err = 0; int err = 0;
const char *name = ""; const char *name = "";
@@ -809,17 +809,16 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
goto exit; goto exit;
} }
new_client = &data->client; client = &data->client;
i2c_set_clientdata(new_client, data); i2c_set_clientdata(client, data);
new_client->addr = address; client->addr = address;
new_client->adapter = adapter; client->adapter = adapter;
new_client->driver = &adm1031_driver; client->driver = &adm1031_driver;
new_client->flags = 0;
if (kind < 0) { if (kind < 0) {
int id, co; int id, co;
id = i2c_smbus_read_byte_data(new_client, 0x3d); id = i2c_smbus_read_byte_data(client, 0x3d);
co = i2c_smbus_read_byte_data(new_client, 0x3e); co = i2c_smbus_read_byte_data(client, 0x3e);
if (!((id == 0x31 || id == 0x30) && co == 0x41)) if (!((id == 0x31 || id == 0x30) && co == 0x41))
goto exit_free; goto exit_free;
@@ -840,28 +839,27 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
} }
data->chip_type = kind; data->chip_type = kind;
strlcpy(new_client->name, name, I2C_NAME_SIZE); strlcpy(client->name, name, I2C_NAME_SIZE);
data->valid = 0;
mutex_init(&data->update_lock); mutex_init(&data->update_lock);
/* Tell the I2C layer a new client has arrived */ /* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client))) if ((err = i2c_attach_client(client)))
goto exit_free; goto exit_free;
/* Initialize the ADM1031 chip */ /* Initialize the ADM1031 chip */
adm1031_init_client(new_client); adm1031_init_client(client);
/* Register sysfs hooks */ /* Register sysfs hooks */
if ((err = sysfs_create_group(&new_client->dev.kobj, &adm1031_group))) if ((err = sysfs_create_group(&client->dev.kobj, &adm1031_group)))
goto exit_detach; goto exit_detach;
if (kind == adm1031) { if (kind == adm1031) {
if ((err = sysfs_create_group(&new_client->dev.kobj, if ((err = sysfs_create_group(&client->dev.kobj,
&adm1031_group_opt))) &adm1031_group_opt)))
goto exit_remove; goto exit_remove;
} }
data->hwmon_dev = hwmon_device_register(&new_client->dev); data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) { if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev); err = PTR_ERR(data->hwmon_dev);
goto exit_remove; goto exit_remove;
@@ -870,10 +868,10 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
return 0; return 0;
exit_remove: exit_remove:
sysfs_remove_group(&new_client->dev.kobj, &adm1031_group); sysfs_remove_group(&client->dev.kobj, &adm1031_group);
sysfs_remove_group(&new_client->dev.kobj, &adm1031_group_opt); sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt);
exit_detach: exit_detach:
i2c_detach_client(new_client); i2c_detach_client(client);
exit_free: exit_free:
kfree(data); kfree(data);
exit: exit: