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hwmon: (gl518sm) Various cleanups

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* Drop history, it doesn't belong there
* Drop unused struct member
* Drop bogus struct member comment
* Drop unused driver ID
* Rename new_client to client
* Drop redundant initializations to 0
* Drop useless cast
* Drop trailing space
* Fix comment
* Drop duplicate comment

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 2007-10-22 17:45:08 +02:00 committed by Mark M. Hoffman
parent 7dcf9a31ef
commit a5955ed274
2 changed files with 19 additions and 31 deletions
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47
drivers/hwmon/gl518sm.c
View file

@ -30,10 +30,6 @@
* We did not keep that part of the original driver in the Linux 2.6 * We did not keep that part of the original driver in the Linux 2.6
* version, since it was making the driver significantly more complex * version, since it was making the driver significantly more complex
* with no real benefit. * with no real benefit.
*
* History:
* 2004-01-28 Original port. (Hong-Gunn Chew)
* 2004-01-31 Code review and approval. (Jean Delvare)
*/ */
#include <linux/module.h> #include <linux/module.h>
@ -129,7 +125,6 @@ struct gl518_data {
u8 voltage_in[4]; /* Register values; [0] = VDD */ u8 voltage_in[4]; /* Register values; [0] = VDD */
u8 voltage_min[4]; /* Register values; [0] = VDD */ u8 voltage_min[4]; /* Register values; [0] = VDD */
u8 voltage_max[4]; /* Register values; [0] = VDD */ u8 voltage_max[4]; /* Register values; [0] = VDD */
u8 iter_voltage_in[4]; /* Register values; [0] = VDD */
u8 fan_in[2]; u8 fan_in[2];
u8 fan_min[2]; u8 fan_min[2];
u8 fan_div[2]; /* Register encoding, shifted right */ u8 fan_div[2]; /* Register encoding, shifted right */
@ -138,7 +133,7 @@ struct gl518_data {
u8 temp_max; /* Register values */ u8 temp_max; /* Register values */
u8 temp_hyst; /* Register values */ u8 temp_hyst; /* Register values */
u8 alarms; /* Register value */ u8 alarms; /* Register value */
u8 alarm_mask; /* Register value */ u8 alarm_mask;
u8 beep_mask; /* Register value */ u8 beep_mask; /* Register value */
u8 beep_enable; /* Boolean */ u8 beep_enable; /* Boolean */
}; };
@ -156,7 +151,6 @@ static struct i2c_driver gl518_driver = {
.driver = { .driver = {
.name = "gl518sm", .name = "gl518sm",
}, },
.id = I2C_DRIVERID_GL518,
.attach_adapter = gl518_attach_adapter, .attach_adapter = gl518_attach_adapter,
.detach_client = gl518_detach_client, .detach_client = gl518_detach_client,
}; };
@ -391,7 +385,7 @@ static int gl518_attach_adapter(struct i2c_adapter *adapter)
static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) static int gl518_detect(struct i2c_adapter *adapter, int address, int kind)
{ {
int i; int i;
struct i2c_client *new_client; struct i2c_client *client;
struct gl518_data *data; struct gl518_data *data;
int err = 0; int err = 0;
@ -408,25 +402,24 @@ static int gl518_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 = &gl518_driver; client->driver = &gl518_driver;
new_client->flags = 0;
/* Now, we do the remaining detection. */ /* Now, we do the remaining detection. */
if (kind < 0) { if (kind < 0) {
if ((gl518_read_value(new_client, GL518_REG_CHIP_ID) != 0x80) if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80)
|| (gl518_read_value(new_client, GL518_REG_CONF) & 0x80)) || (gl518_read_value(client, GL518_REG_CONF) & 0x80))
goto exit_free; goto exit_free;
} }
/* Determine the chip type. */ /* Determine the chip type. */
if (kind <= 0) { if (kind <= 0) {
i = gl518_read_value(new_client, GL518_REG_REVISION); i = gl518_read_value(client, GL518_REG_REVISION);
if (i == 0x00) { if (i == 0x00) {
kind = gl518sm_r00; kind = gl518sm_r00;
} else if (i == 0x80) { } else if (i == 0x80) {
@ -442,25 +435,24 @@ static int gl518_detect(struct i2c_adapter *adapter, int address, int kind)
} }
/* Fill in the remaining client fields */ /* Fill in the remaining client fields */
strlcpy(new_client->name, "gl518sm", I2C_NAME_SIZE); strlcpy(client->name, "gl518sm", I2C_NAME_SIZE);
data->type = kind; data->type = kind;
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 GL518SM chip */ /* Initialize the GL518SM chip */
data->alarm_mask = 0xff; data->alarm_mask = 0xff;
data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0; data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0;
gl518_init_client((struct i2c_client *) new_client); gl518_init_client(client);
/* Register sysfs hooks */ /* Register sysfs hooks */
if ((err = sysfs_create_group(&new_client->dev.kobj, &gl518_group))) if ((err = sysfs_create_group(&client->dev.kobj, &gl518_group)))
goto exit_detach; goto exit_detach;
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_files; goto exit_remove_files;
@ -469,9 +461,9 @@ static int gl518_detect(struct i2c_adapter *adapter, int address, int kind)
return 0; return 0;
exit_remove_files: exit_remove_files:
sysfs_remove_group(&new_client->dev.kobj, &gl518_group); sysfs_remove_group(&client->dev.kobj, &gl518_group);
exit_detach: exit_detach:
i2c_detach_client(new_client); i2c_detach_client(client);
exit_free: exit_free:
kfree(data); kfree(data);
exit: exit:
@ -514,7 +506,7 @@ static int gl518_detach_client(struct i2c_client *client)
/* Registers 0x07 to 0x0c are word-sized, others are byte-sized /* Registers 0x07 to 0x0c are word-sized, others are byte-sized
GL518 uses a high-byte first convention, which is exactly opposite to GL518 uses a high-byte first convention, which is exactly opposite to
the usual practice. */ the SMBus standard. */
static int gl518_read_value(struct i2c_client *client, u8 reg) static int gl518_read_value(struct i2c_client *client, u8 reg)
{ {
if ((reg >= 0x07) && (reg <= 0x0c)) if ((reg >= 0x07) && (reg <= 0x0c))
@ -523,9 +515,6 @@ static int gl518_read_value(struct i2c_client *client, u8 reg)
return i2c_smbus_read_byte_data(client, reg); return i2c_smbus_read_byte_data(client, reg);
} }
/* Registers 0x07 to 0x0c are word-sized, others are byte-sized
GL518 uses a high-byte first convention, which is exactly opposite to
the usual practice. */
static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value)
{ {
if ((reg >= 0x07) && (reg <= 0x0c)) if ((reg >= 0x07) && (reg <= 0x0c))

1
include/linux/i2c-id.h
View file

@ -100,7 +100,6 @@
These were originally in sensors.h in the lm_sensors package */ These were originally in sensors.h in the lm_sensors package */
#define I2C_DRIVERID_LM78 1002 #define I2C_DRIVERID_LM78 1002
#define I2C_DRIVERID_LM75 1003 #define I2C_DRIVERID_LM75 1003
#define I2C_DRIVERID_GL518 1004
#define I2C_DRIVERID_EEPROM 1005 #define I2C_DRIVERID_EEPROM 1005
#define I2C_DRIVERID_W83781D 1006 #define I2C_DRIVERID_W83781D 1006
#define I2C_DRIVERID_LM80 1007 #define I2C_DRIVERID_LM80 1007