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hwmon: (atxp1) Fix checkpatch issues

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Fixed:
ERROR: code indent should use tabs where possible
ERROR: do not use assignment in if condition
ERROR: else should follow close brace '}'
ERROR: "foo * bar" should be "foo *bar"
WARNING: braces {} are not necessary for single statement blocks
WARNING: line over 80 characters
WARNING: please, no space before tabs
WARNING: please, no spaces at the start of a line
WARNING: simple_strtoul is obsolete, use kstrtoul instead

Modify multi-line comments to follow Documentation/CodingStyle.

Cc: Sebastian Witt <se.witt@gmx.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2012-01-14 13:21:59 -08:00 committed by Guenter Roeck
parent 724cc3316e
commit f24d548bf2
1 changed files with 93 additions and 65 deletions
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158
drivers/hwmon/atxp1.c
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@ -1,22 +1,22 @@
/* /*
atxp1.c - kernel module for setting CPU VID and general purpose * atxp1.c - kernel module for setting CPU VID and general purpose
I/Os using the Attansic ATXP1 chip. * I/Os using the Attansic ATXP1 chip.
*
This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or * the Free Software Foundation; either version 2 of the License, or
(at your option) any later version. * (at your option) any later version.
*
This program is distributed in the hope that it will be useful, * This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of * but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details. * GNU General Public License for more details.
*
You should have received a copy of the GNU General Public License * You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/ */
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/init.h> #include <linux/init.h>
@ -48,7 +48,7 @@ static const unsigned short normal_i2c[] = { 0x37, 0x4e, I2C_CLIENT_END };
static int atxp1_probe(struct i2c_client *client, static int atxp1_probe(struct i2c_client *client,
const struct i2c_device_id *id); const struct i2c_device_id *id);
static int atxp1_remove(struct i2c_client *client); static int atxp1_remove(struct i2c_client *client);
static struct atxp1_data * atxp1_update_device(struct device *dev); static struct atxp1_data *atxp1_update_device(struct device *dev);
static int atxp1_detect(struct i2c_client *client, struct i2c_board_info *info); static int atxp1_detect(struct i2c_client *client, struct i2c_board_info *info);
static const struct i2c_device_id atxp1_id[] = { static const struct i2c_device_id atxp1_id[] = {
@ -83,7 +83,7 @@ struct atxp1_data {
u8 vrm; /* Detected CPU VRM */ u8 vrm; /* Detected CPU VRM */
}; };
static struct atxp1_data * atxp1_update_device(struct device *dev) static struct atxp1_data *atxp1_update_device(struct device *dev)
{ {
struct i2c_client *client; struct i2c_client *client;
struct atxp1_data *data; struct atxp1_data *data;
@ -97,7 +97,8 @@ static struct atxp1_data * atxp1_update_device(struct device *dev)
/* Update local register data */ /* Update local register data */
data->reg.vid = i2c_smbus_read_byte_data(client, ATXP1_VID); data->reg.vid = i2c_smbus_read_byte_data(client, ATXP1_VID);
data->reg.cpu_vid = i2c_smbus_read_byte_data(client, ATXP1_CVID); data->reg.cpu_vid = i2c_smbus_read_byte_data(client,
ATXP1_CVID);
data->reg.gpio1 = i2c_smbus_read_byte_data(client, ATXP1_GPIO1); data->reg.gpio1 = i2c_smbus_read_byte_data(client, ATXP1_GPIO1);
data->reg.gpio2 = i2c_smbus_read_byte_data(client, ATXP1_GPIO2); data->reg.gpio2 = i2c_smbus_read_byte_data(client, ATXP1_GPIO2);
@ -110,29 +111,37 @@ static struct atxp1_data * atxp1_update_device(struct device *dev)
} }
/* sys file functions for cpu0_vid */ /* sys file functions for cpu0_vid */
static ssize_t atxp1_showvcore(struct device *dev, struct device_attribute *attr, char *buf) static ssize_t atxp1_showvcore(struct device *dev,
struct device_attribute *attr, char *buf)
{ {
int size; int size;
struct atxp1_data *data; struct atxp1_data *data;
data = atxp1_update_device(dev); data = atxp1_update_device(dev);
size = sprintf(buf, "%d\n", vid_from_reg(data->reg.vid & ATXP1_VIDMASK, data->vrm)); size = sprintf(buf, "%d\n", vid_from_reg(data->reg.vid & ATXP1_VIDMASK,
data->vrm));
return size; return size;
} }
static ssize_t atxp1_storevcore(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) static ssize_t atxp1_storevcore(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{ {
struct atxp1_data *data; struct atxp1_data *data;
struct i2c_client *client; struct i2c_client *client;
int vid, cvid; int vid, cvid;
unsigned int vcore; unsigned long vcore;
int err;
client = to_i2c_client(dev); client = to_i2c_client(dev);
data = atxp1_update_device(dev); data = atxp1_update_device(dev);
vcore = simple_strtoul(buf, NULL, 10); err = kstrtoul(buf, 10, &vcore);
if (err)
return err;
vcore /= 25; vcore /= 25;
vcore *= 25; vcore *= 25;
@ -144,7 +153,10 @@ static ssize_t atxp1_storevcore(struct device *dev, struct device_attribute *att
return -1; return -1;
} }
/* If output enabled, use control register value. Otherwise original CPU VID */ /*
* If output enabled, use control register value.
* Otherwise original CPU VID
*/
if (data->reg.vid & ATXP1_VIDENA) if (data->reg.vid & ATXP1_VIDENA)
cvid = data->reg.vid & ATXP1_VIDMASK; cvid = data->reg.vid & ATXP1_VIDMASK;
else else
@ -154,18 +166,17 @@ static ssize_t atxp1_storevcore(struct device *dev, struct device_attribute *att
if (vid == cvid) if (vid == cvid)
return count; return count;
dev_dbg(dev, "Setting VCore to %d mV (0x%02x)\n", vcore, vid); dev_dbg(dev, "Setting VCore to %d mV (0x%02x)\n", (int)vcore, vid);
/* Write every 25 mV step to increase stability */ /* Write every 25 mV step to increase stability */
if (cvid > vid) { if (cvid > vid) {
for (; cvid >= vid; cvid--) { for (; cvid >= vid; cvid--)
i2c_smbus_write_byte_data(client, ATXP1_VID, cvid | ATXP1_VIDENA); i2c_smbus_write_byte_data(client,
} ATXP1_VID, cvid | ATXP1_VIDENA);
} } else {
else { for (; cvid <= vid; cvid++)
for (; cvid <= vid; cvid++) { i2c_smbus_write_byte_data(client,
i2c_smbus_write_byte_data(client, ATXP1_VID, cvid | ATXP1_VIDENA); ATXP1_VID, cvid | ATXP1_VIDENA);
}
} }
data->valid = 0; data->valid = 0;
@ -173,13 +184,16 @@ static ssize_t atxp1_storevcore(struct device *dev, struct device_attribute *att
return count; return count;
} }
/* CPU core reference voltage /*
unit: millivolt * CPU core reference voltage
*/ * unit: millivolt
static DEVICE_ATTR(cpu0_vid, S_IRUGO | S_IWUSR, atxp1_showvcore, atxp1_storevcore); */
static DEVICE_ATTR(cpu0_vid, S_IRUGO | S_IWUSR, atxp1_showvcore,
atxp1_storevcore);
/* sys file functions for GPIO1 */ /* sys file functions for GPIO1 */
static ssize_t atxp1_showgpio1(struct device *dev, struct device_attribute *attr, char *buf) static ssize_t atxp1_showgpio1(struct device *dev,
struct device_attribute *attr, char *buf)
{ {
int size; int size;
struct atxp1_data *data; struct atxp1_data *data;
@ -191,21 +205,26 @@ static ssize_t atxp1_showgpio1(struct device *dev, struct device_attribute *attr
return size; return size;
} }
static ssize_t atxp1_storegpio1(struct device *dev, struct device_attribute *attr, const char*buf, size_t count) static ssize_t atxp1_storegpio1(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{ {
struct atxp1_data *data; struct atxp1_data *data;
struct i2c_client *client; struct i2c_client *client;
unsigned int value; unsigned long value;
int err;
client = to_i2c_client(dev); client = to_i2c_client(dev);
data = atxp1_update_device(dev); data = atxp1_update_device(dev);
value = simple_strtoul(buf, NULL, 16); err = kstrtoul(buf, 16, &value);
if (err)
return err;
value &= ATXP1_GPIO1MASK; value &= ATXP1_GPIO1MASK;
if (value != (data->reg.gpio1 & ATXP1_GPIO1MASK)) { if (value != (data->reg.gpio1 & ATXP1_GPIO1MASK)) {
dev_info(dev, "Writing 0x%x to GPIO1.\n", value); dev_info(dev, "Writing 0x%x to GPIO1.\n", (unsigned int)value);
i2c_smbus_write_byte_data(client, ATXP1_GPIO1, value); i2c_smbus_write_byte_data(client, ATXP1_GPIO1, value);
@ -215,13 +234,15 @@ static ssize_t atxp1_storegpio1(struct device *dev, struct device_attribute *att
return count; return count;
} }
/* GPIO1 data register /*
unit: Four bit as hex (e.g. 0x0f) * GPIO1 data register
*/ * unit: Four bit as hex (e.g. 0x0f)
*/
static DEVICE_ATTR(gpio1, S_IRUGO | S_IWUSR, atxp1_showgpio1, atxp1_storegpio1); static DEVICE_ATTR(gpio1, S_IRUGO | S_IWUSR, atxp1_showgpio1, atxp1_storegpio1);
/* sys file functions for GPIO2 */ /* sys file functions for GPIO2 */
static ssize_t atxp1_showgpio2(struct device *dev, struct device_attribute *attr, char *buf) static ssize_t atxp1_showgpio2(struct device *dev,
struct device_attribute *attr, char *buf)
{ {
int size; int size;
struct atxp1_data *data; struct atxp1_data *data;
@ -233,19 +254,22 @@ static ssize_t atxp1_showgpio2(struct device *dev, struct device_attribute *attr
return size; return size;
} }
static ssize_t atxp1_storegpio2(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) static ssize_t atxp1_storegpio2(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{ {
struct atxp1_data *data; struct atxp1_data *data = atxp1_update_device(dev);
struct i2c_client *client; struct i2c_client *client = to_i2c_client(dev);
unsigned int value; unsigned long value;
int err;
client = to_i2c_client(dev); err = kstrtoul(buf, 16, &value);
data = atxp1_update_device(dev); if (err)
return err;
value = simple_strtoul(buf, NULL, 16) & 0xff; value &= 0xff;
if (value != data->reg.gpio2) { if (value != data->reg.gpio2) {
dev_info(dev, "Writing 0x%x to GPIO1.\n", value); dev_info(dev, "Writing 0x%x to GPIO1.\n", (unsigned int)value);
i2c_smbus_write_byte_data(client, ATXP1_GPIO2, value); i2c_smbus_write_byte_data(client, ATXP1_GPIO2, value);
@ -255,9 +279,10 @@ static ssize_t atxp1_storegpio2(struct device *dev, struct device_attribute *att
return count; return count;
} }
/* GPIO2 data register /*
unit: Eight bit as hex (e.g. 0xff) * GPIO2 data register
*/ * unit: Eight bit as hex (e.g. 0xff)
*/
static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2); static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2);
static struct attribute *atxp1_attributes[] = { static struct attribute *atxp1_attributes[] = {
@ -290,8 +315,10 @@ static int atxp1_detect(struct i2c_client *new_client,
(i2c_smbus_read_byte_data(new_client, 0xff) == 0))) (i2c_smbus_read_byte_data(new_client, 0xff) == 0)))
return -ENODEV; return -ENODEV;
/* No vendor ID, now checking if registers 0x10,0x11 (non-existent) /*
* showing the same as register 0x00 */ * No vendor ID, now checking if registers 0x10,0x11 (non-existent)
* showing the same as register 0x00
*/
temp = i2c_smbus_read_byte_data(new_client, 0x00); temp = i2c_smbus_read_byte_data(new_client, 0x00);
if (!((i2c_smbus_read_byte_data(new_client, 0x10) == temp) && if (!((i2c_smbus_read_byte_data(new_client, 0x10) == temp) &&
@ -333,7 +360,8 @@ static int atxp1_probe(struct i2c_client *new_client,
mutex_init(&data->update_lock); mutex_init(&data->update_lock);
/* Register sysfs hooks */ /* Register sysfs hooks */
if ((err = sysfs_create_group(&new_client->dev.kobj, &atxp1_group))) err = sysfs_create_group(&new_client->dev.kobj, &atxp1_group);
if (err)
goto exit_free; goto exit_free;
data->hwmon_dev = hwmon_device_register(&new_client->dev); data->hwmon_dev = hwmon_device_register(&new_client->dev);
@ -357,7 +385,7 @@ exit:
static int atxp1_remove(struct i2c_client *client) static int atxp1_remove(struct i2c_client *client)
{ {
struct atxp1_data * data = i2c_get_clientdata(client); struct atxp1_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev); hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &atxp1_group); sysfs_remove_group(&client->dev.kobj, &atxp1_group);