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path: root/drivers/hwmon/amc6821.c
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Diffstat (limited to 'drivers/hwmon/amc6821.c')
-rw-r--r--drivers/hwmon/amc6821.c145
1 files changed, 59 insertions, 86 deletions
diff --git a/drivers/hwmon/amc6821.c b/drivers/hwmon/amc6821.c
index fa9708c2d72..9f2be3dd28f 100644
--- a/drivers/hwmon/amc6821.c
+++ b/drivers/hwmon/amc6821.c
@@ -1,25 +1,25 @@
/*
- amc6821.c - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
- Copyright (C) 2009 T. Mertelj <tomaz.mertelj@guest.arnes.si>
-
- Based on max6650.c:
- Copyright (C) 2007 Hans J. Koch <hjk@linutronix.de>
-
- 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+ * amc6821.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ * Copyright (C) 2009 T. Mertelj <tomaz.mertelj@guest.arnes.si>
+ *
+ * Based on max6650.c:
+ * Copyright (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
#include <linux/kernel.h> /* Needed for KERN_INFO */
@@ -47,7 +47,7 @@ static const unsigned short normal_i2c[] = {0x18, 0x19, 0x1a, 0x2c, 0x2d, 0x2e,
* Insmod parameters
*/
-static int pwminv = 0; /*Inverted PWM output. */
+static int pwminv; /*Inverted PWM output. */
module_param(pwminv, int, S_IRUGO);
static int init = 1; /*Power-on initialization.*/
@@ -188,7 +188,7 @@ static struct i2c_driver amc6821_driver = {
/*
* Client data (each client gets its own)
- */
+ */
struct amc6821_data {
struct device *hwmon_dev;
@@ -238,10 +238,10 @@ static ssize_t set_temp(
int ix = to_sensor_dev_attr(attr)->index;
long val;
- int ret = strict_strtol(buf, 10, &val);
+ int ret = kstrtol(buf, 10, &val);
if (ret)
return ret;
- val = SENSORS_LIMIT(val / 1000, -128, 127);
+ val = clamp_val(val / 1000, -128, 127);
mutex_lock(&data->update_lock);
data->temp[ix] = val;
@@ -327,12 +327,12 @@ static ssize_t set_pwm1(
struct i2c_client *client = to_i2c_client(dev);
struct amc6821_data *data = i2c_get_clientdata(client);
long val;
- int ret = strict_strtol(buf, 10, &val);
+ int ret = kstrtol(buf, 10, &val);
if (ret)
return ret;
mutex_lock(&data->update_lock);
- data->pwm1 = SENSORS_LIMIT(val , 0, 255);
+ data->pwm1 = clamp_val(val , 0, 255);
i2c_smbus_write_byte_data(client, AMC6821_REG_DCY, data->pwm1);
mutex_unlock(&data->update_lock);
return count;
@@ -356,7 +356,7 @@ static ssize_t set_pwm1_enable(
struct i2c_client *client = to_i2c_client(dev);
struct amc6821_data *data = i2c_get_clientdata(client);
long val;
- int config = strict_strtol(buf, 10, &val);
+ int config = kstrtol(buf, 10, &val);
if (config)
return config;
@@ -364,7 +364,7 @@ static ssize_t set_pwm1_enable(
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return -EIO;
+ return config;
}
switch (val) {
@@ -416,11 +416,9 @@ static ssize_t get_temp_auto_point_temp(
case 1:
return sprintf(buf, "%d\n",
data->temp1_auto_point_temp[ix] * 1000);
- break;
case 2:
return sprintf(buf, "%d\n",
data->temp2_auto_point_temp[ix] * 1000);
- break;
default:
dev_dbg(dev, "Unknown attr->nr (%d).\n", nr);
return -EINVAL;
@@ -477,7 +475,7 @@ static ssize_t set_temp_auto_point_temp(
u8 reg;
int dpwm;
long val;
- int ret = strict_strtol(buf, 10, &val);
+ int ret = kstrtol(buf, 10, &val);
if (ret)
return ret;
@@ -499,11 +497,11 @@ static ssize_t set_temp_auto_point_temp(
mutex_lock(&data->update_lock);
switch (ix) {
case 0:
- ptemp[0] = SENSORS_LIMIT(val / 1000, 0,
- data->temp1_auto_point_temp[1]);
- ptemp[0] = SENSORS_LIMIT(ptemp[0], 0,
- data->temp2_auto_point_temp[1]);
- ptemp[0] = SENSORS_LIMIT(ptemp[0], 0, 63);
+ ptemp[0] = clamp_val(val / 1000, 0,
+ data->temp1_auto_point_temp[1]);
+ ptemp[0] = clamp_val(ptemp[0], 0,
+ data->temp2_auto_point_temp[1]);
+ ptemp[0] = clamp_val(ptemp[0], 0, 63);
if (i2c_smbus_write_byte_data(
client,
AMC6821_REG_PSV_TEMP,
@@ -513,22 +511,13 @@ static ssize_t set_temp_auto_point_temp(
count = -EIO;
}
goto EXIT;
- break;
case 1:
- ptemp[1] = SENSORS_LIMIT(
- val / 1000,
- (ptemp[0] & 0x7C) + 4,
- 124);
+ ptemp[1] = clamp_val(val / 1000, (ptemp[0] & 0x7C) + 4, 124);
ptemp[1] &= 0x7C;
- ptemp[2] = SENSORS_LIMIT(
- ptemp[2], ptemp[1] + 1,
- 255);
+ ptemp[2] = clamp_val(ptemp[2], ptemp[1] + 1, 255);
break;
case 2:
- ptemp[2] = SENSORS_LIMIT(
- val / 1000,
- ptemp[1]+1,
- 255);
+ ptemp[2] = clamp_val(val / 1000, ptemp[1]+1, 255);
break;
default:
dev_dbg(dev, "Unknown attr->index (%d).\n", ix);
@@ -556,12 +545,12 @@ static ssize_t set_pwm1_auto_point_pwm(
struct amc6821_data *data = i2c_get_clientdata(client);
int dpwm;
long val;
- int ret = strict_strtol(buf, 10, &val);
+ int ret = kstrtol(buf, 10, &val);
if (ret)
return ret;
mutex_lock(&data->update_lock);
- data->pwm1_auto_point_pwm[1] = SENSORS_LIMIT(val, 0, 254);
+ data->pwm1_auto_point_pwm[1] = clamp_val(val, 0, 254);
if (i2c_smbus_write_byte_data(client, AMC6821_REG_DCY_LOW_TEMP,
data->pwm1_auto_point_pwm[1])) {
dev_err(&client->dev, "Register write error, aborting.\n");
@@ -623,13 +612,13 @@ static ssize_t set_fan(
struct amc6821_data *data = i2c_get_clientdata(client);
long val;
int ix = to_sensor_dev_attr(attr)->index;
- int ret = strict_strtol(buf, 10, &val);
+ int ret = kstrtol(buf, 10, &val);
if (ret)
return ret;
val = 1 > val ? 0xFFFF : 6000000/val;
mutex_lock(&data->update_lock);
- data->fan[ix] = (u16) SENSORS_LIMIT(val, 1, 0xFFFF);
+ data->fan[ix] = (u16) clamp_val(val, 1, 0xFFFF);
if (i2c_smbus_write_byte_data(client, fan_reg_low[ix],
data->fan[ix] & 0xFF)) {
dev_err(&client->dev, "Register write error, aborting.\n");
@@ -665,7 +654,7 @@ static ssize_t set_fan1_div(
struct i2c_client *client = to_i2c_client(dev);
struct amc6821_data *data = i2c_get_clientdata(client);
long val;
- int config = strict_strtol(buf, 10, &val);
+ int config = kstrtol(buf, 10, &val);
if (config)
return config;
@@ -673,7 +662,7 @@ static ssize_t set_fan1_div(
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return -EIO;
+ return config;
}
mutex_lock(&data->update_lock);
switch (val) {
@@ -715,7 +704,7 @@ static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO,
get_temp_alarm, NULL, IDX_TEMP1_MAX);
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO,
get_temp_alarm, NULL, IDX_TEMP1_CRIT);
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO,
get_temp, NULL, IDX_TEMP2_INPUT);
static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO | S_IWUSR, get_temp,
set_temp, IDX_TEMP2_MIN);
@@ -836,8 +825,10 @@ static int amc6821_detect(
return -ENODEV;
}
- /* Bit 7 of the address register is ignored, so we can check the
- ID registers again */
+ /*
+ * Bit 7 of the address register is ignored, so we can check the
+ * ID registers again
+ */
dev_id = i2c_smbus_read_byte_data(client, 0x80 | AMC6821_REG_DEV_ID);
comp_id = i2c_smbus_read_byte_data(client, 0x80 | AMC6821_REG_COMP_ID);
if (dev_id != 0x21 || comp_id != 0x49) {
@@ -860,12 +851,10 @@ static int amc6821_probe(
struct amc6821_data *data;
int err;
- data = kzalloc(sizeof(struct amc6821_data), GFP_KERNEL);
- if (!data) {
- dev_err(&client->dev, "out of memory.\n");
+ data = devm_kzalloc(&client->dev, sizeof(struct amc6821_data),
+ GFP_KERNEL);
+ if (!data)
return -ENOMEM;
- }
-
i2c_set_clientdata(client, data);
mutex_init(&data->update_lock);
@@ -875,11 +864,11 @@ static int amc6821_probe(
*/
err = amc6821_init_client(client);
if (err)
- goto err_free;
+ return err;
err = sysfs_create_group(&client->dev.kobj, &amc6821_attr_grp);
if (err)
- goto err_free;
+ return err;
data->hwmon_dev = hwmon_device_register(&client->dev);
if (!IS_ERR(data->hwmon_dev))
@@ -888,8 +877,6 @@ static int amc6821_probe(
err = PTR_ERR(data->hwmon_dev);
dev_err(&client->dev, "error registering hwmon device.\n");
sysfs_remove_group(&client->dev.kobj, &amc6821_attr_grp);
-err_free:
- kfree(data);
return err;
}
@@ -900,8 +887,6 @@ static int amc6821_remove(struct i2c_client *client)
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &amc6821_attr_grp);
- kfree(data);
-
return 0;
}
@@ -1080,9 +1065,10 @@ static struct amc6821_data *amc6821_update_device(struct device *dev)
data->pwm1_auto_channels_temp = 3;
data->pwm1_enable = 3;
break;
- case 1: /*semi-open loop: software sets rpm, chip controls pwm1,
- *currently not implemented
- */
+ case 1: /*
+ * semi-open loop: software sets rpm, chip controls
+ * pwm1, currently not implemented
+ */
data->pwm1_auto_channels_temp = 0;
data->pwm1_enable = 0;
break;
@@ -1095,20 +1081,7 @@ static struct amc6821_data *amc6821_update_device(struct device *dev)
return data;
}
-
-static int __init amc6821_init(void)
-{
- return i2c_add_driver(&amc6821_driver);
-}
-
-static void __exit amc6821_exit(void)
-{
- i2c_del_driver(&amc6821_driver);
-}
-
-module_init(amc6821_init);
-module_exit(amc6821_exit);
-
+module_i2c_driver(amc6821_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("T. Mertelj <tomaz.mertelj@guest.arnes.si>");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-05 13:57:26 +0000