mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
952a11ca32
We have bool so use it consistently in all the drivers. The following Coccinelle script was used: @@ identifier T; type t = { char, int }; @@ struct T { ... - t valid; + bool valid; ... } @@ identifier v; @@ ( - v->valid = 0 + v->valid = false | - v->valid = 1 + v->valid = true ) followed by sed to fixup the comments: sed '/bool valid;/{s/!=0/true/;s/zero/false/}' Few whitespace changes were fixed manually. All modified drivers were compile-tested. Signed-off-by: Paul Fertser <fercerpav@gmail.com> Link: https://lore.kernel.org/r/20210924195202.27917-1-fercerpav@gmail.com [groeck: Fixed up 'u8 valid' to 'boool valid' in atxp1.c] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
433 lines
12 KiB
C
433 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* thmc50.c - Part of lm_sensors, Linux kernel modules for hardware
|
|
* monitoring
|
|
* Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl>
|
|
* Based on 2.4 driver by Frodo Looijaard <frodol@dds.nl> and
|
|
* Philip Edelbrock <phil@netroedge.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/hwmon.h>
|
|
#include <linux/hwmon-sysfs.h>
|
|
#include <linux/err.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/jiffies.h>
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/* Addresses to scan */
|
|
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
|
|
|
|
/* Insmod parameters */
|
|
enum chips { thmc50, adm1022 };
|
|
|
|
static unsigned short adm1022_temp3[16];
|
|
static unsigned int adm1022_temp3_num;
|
|
module_param_array(adm1022_temp3, ushort, &adm1022_temp3_num, 0);
|
|
MODULE_PARM_DESC(adm1022_temp3,
|
|
"List of adapter,address pairs to enable 3rd temperature (ADM1022 only)");
|
|
|
|
/* Many THMC50 constants specified below */
|
|
|
|
/* The THMC50 registers */
|
|
#define THMC50_REG_CONF 0x40
|
|
#define THMC50_REG_COMPANY_ID 0x3E
|
|
#define THMC50_REG_DIE_CODE 0x3F
|
|
#define THMC50_REG_ANALOG_OUT 0x19
|
|
/*
|
|
* The mirror status register cannot be used as
|
|
* reading it does not clear alarms.
|
|
*/
|
|
#define THMC50_REG_INTR 0x41
|
|
|
|
static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
|
|
static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
|
|
static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B };
|
|
static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 };
|
|
static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 };
|
|
|
|
#define THMC50_REG_CONF_nFANOFF 0x20
|
|
#define THMC50_REG_CONF_PROGRAMMED 0x08
|
|
|
|
/* Each client has this additional data */
|
|
struct thmc50_data {
|
|
struct i2c_client *client;
|
|
const struct attribute_group *groups[3];
|
|
|
|
struct mutex update_lock;
|
|
enum chips type;
|
|
unsigned long last_updated; /* In jiffies */
|
|
char has_temp3; /* !=0 if it is ADM1022 in temp3 mode */
|
|
bool valid; /* true if following fields are valid */
|
|
|
|
/* Register values */
|
|
s8 temp_input[3];
|
|
s8 temp_max[3];
|
|
s8 temp_min[3];
|
|
s8 temp_critical[3];
|
|
u8 analog_out;
|
|
u8 alarms;
|
|
};
|
|
|
|
static struct thmc50_data *thmc50_update_device(struct device *dev)
|
|
{
|
|
struct thmc50_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int timeout = HZ / 5 + (data->type == thmc50 ? HZ : 0);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + timeout)
|
|
|| !data->valid) {
|
|
|
|
int temps = data->has_temp3 ? 3 : 2;
|
|
int i;
|
|
int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
|
|
|
|
prog &= THMC50_REG_CONF_PROGRAMMED;
|
|
|
|
for (i = 0; i < temps; i++) {
|
|
data->temp_input[i] = i2c_smbus_read_byte_data(client,
|
|
THMC50_REG_TEMP[i]);
|
|
data->temp_max[i] = i2c_smbus_read_byte_data(client,
|
|
THMC50_REG_TEMP_MAX[i]);
|
|
data->temp_min[i] = i2c_smbus_read_byte_data(client,
|
|
THMC50_REG_TEMP_MIN[i]);
|
|
data->temp_critical[i] =
|
|
i2c_smbus_read_byte_data(client,
|
|
prog ? THMC50_REG_TEMP_CRITICAL[i]
|
|
: THMC50_REG_TEMP_DEFAULT[i]);
|
|
}
|
|
data->analog_out =
|
|
i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
|
|
data->alarms =
|
|
i2c_smbus_read_byte_data(client, THMC50_REG_INTR);
|
|
data->last_updated = jiffies;
|
|
data->valid = true;
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static ssize_t analog_out_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct thmc50_data *data = thmc50_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->analog_out);
|
|
}
|
|
|
|
static ssize_t analog_out_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct thmc50_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int config;
|
|
unsigned long tmp;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &tmp);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->analog_out = clamp_val(tmp, 0, 255);
|
|
i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT,
|
|
data->analog_out);
|
|
|
|
config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
|
|
if (data->analog_out == 0)
|
|
config &= ~THMC50_REG_CONF_nFANOFF;
|
|
else
|
|
config |= THMC50_REG_CONF_nFANOFF;
|
|
i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config);
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
/* There is only one PWM mode = DC */
|
|
static ssize_t pwm_mode_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "0\n");
|
|
}
|
|
|
|
/* Temperatures */
|
|
static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct thmc50_data *data = thmc50_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->temp_input[nr] * 1000);
|
|
}
|
|
|
|
static ssize_t temp_min_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct thmc50_data *data = thmc50_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->temp_min[nr] * 1000);
|
|
}
|
|
|
|
static ssize_t temp_min_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct thmc50_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_min[nr] = clamp_val(val / 1000, -128, 127);
|
|
i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MIN[nr],
|
|
data->temp_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t temp_max_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct thmc50_data *data = thmc50_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->temp_max[nr] * 1000);
|
|
}
|
|
|
|
static ssize_t temp_max_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct thmc50_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_max[nr] = clamp_val(val / 1000, -128, 127);
|
|
i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MAX[nr],
|
|
data->temp_max[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t temp_critical_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct thmc50_data *data = thmc50_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000);
|
|
}
|
|
|
|
static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int index = to_sensor_dev_attr(attr)->index;
|
|
struct thmc50_data *data = thmc50_update_device(dev);
|
|
|
|
return sprintf(buf, "%u\n", (data->alarms >> index) & 1);
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
|
|
static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0);
|
|
static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_crit, temp_critical, 0);
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
|
|
static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1);
|
|
static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_crit, temp_critical, 1);
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
|
|
static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2);
|
|
static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_crit, temp_critical, 2);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 0);
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 5);
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 1);
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 7);
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 2);
|
|
|
|
static SENSOR_DEVICE_ATTR_RW(pwm1, analog_out, 0);
|
|
static SENSOR_DEVICE_ATTR_RO(pwm1_mode, pwm_mode, 0);
|
|
|
|
static struct attribute *thmc50_attributes[] = {
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_fault.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_mode.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group thmc50_group = {
|
|
.attrs = thmc50_attributes,
|
|
};
|
|
|
|
/* for ADM1022 3rd temperature mode */
|
|
static struct attribute *temp3_attributes[] = {
|
|
&sensor_dev_attr_temp3_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_fault.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group temp3_group = {
|
|
.attrs = temp3_attributes,
|
|
};
|
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
|
static int thmc50_detect(struct i2c_client *client,
|
|
struct i2c_board_info *info)
|
|
{
|
|
unsigned company;
|
|
unsigned revision;
|
|
unsigned config;
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
const char *type_name;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
|
|
pr_debug("thmc50: detect failed, smbus byte data not supported!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pr_debug("thmc50: Probing for THMC50 at 0x%2X on bus %d\n",
|
|
client->addr, i2c_adapter_id(client->adapter));
|
|
|
|
company = i2c_smbus_read_byte_data(client, THMC50_REG_COMPANY_ID);
|
|
revision = i2c_smbus_read_byte_data(client, THMC50_REG_DIE_CODE);
|
|
config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
|
|
if (revision < 0xc0 || (config & 0x10))
|
|
return -ENODEV;
|
|
|
|
if (company == 0x41) {
|
|
int id = i2c_adapter_id(client->adapter);
|
|
int i;
|
|
|
|
type_name = "adm1022";
|
|
for (i = 0; i + 1 < adm1022_temp3_num; i += 2)
|
|
if (adm1022_temp3[i] == id &&
|
|
adm1022_temp3[i + 1] == client->addr) {
|
|
/* enable 2nd remote temp */
|
|
config |= (1 << 7);
|
|
i2c_smbus_write_byte_data(client,
|
|
THMC50_REG_CONF,
|
|
config);
|
|
break;
|
|
}
|
|
} else if (company == 0x49) {
|
|
type_name = "thmc50";
|
|
} else {
|
|
pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pr_debug("thmc50: Detected %s (version %x, revision %x)\n",
|
|
type_name, (revision >> 4) - 0xc, revision & 0xf);
|
|
|
|
strlcpy(info->type, type_name, I2C_NAME_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void thmc50_init_client(struct thmc50_data *data)
|
|
{
|
|
struct i2c_client *client = data->client;
|
|
int config;
|
|
|
|
data->analog_out = i2c_smbus_read_byte_data(client,
|
|
THMC50_REG_ANALOG_OUT);
|
|
/* set up to at least 1 */
|
|
if (data->analog_out == 0) {
|
|
data->analog_out = 1;
|
|
i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT,
|
|
data->analog_out);
|
|
}
|
|
config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
|
|
config |= 0x1; /* start the chip if it is in standby mode */
|
|
if (data->type == adm1022 && (config & (1 << 7)))
|
|
data->has_temp3 = 1;
|
|
i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config);
|
|
}
|
|
|
|
static const struct i2c_device_id thmc50_id[];
|
|
|
|
static int thmc50_probe(struct i2c_client *client)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct thmc50_data *data;
|
|
struct device *hwmon_dev;
|
|
int idx = 0;
|
|
|
|
data = devm_kzalloc(dev, sizeof(struct thmc50_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->client = client;
|
|
data->type = i2c_match_id(thmc50_id, client)->driver_data;
|
|
mutex_init(&data->update_lock);
|
|
|
|
thmc50_init_client(data);
|
|
|
|
/* sysfs hooks */
|
|
data->groups[idx++] = &thmc50_group;
|
|
|
|
/* Register additional ADM1022 sysfs hooks */
|
|
if (data->has_temp3)
|
|
data->groups[idx++] = &temp3_group;
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
|
|
data, data->groups);
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
static const struct i2c_device_id thmc50_id[] = {
|
|
{ "adm1022", adm1022 },
|
|
{ "thmc50", thmc50 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, thmc50_id);
|
|
|
|
static struct i2c_driver thmc50_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = "thmc50",
|
|
},
|
|
.probe_new = thmc50_probe,
|
|
.id_table = thmc50_id,
|
|
.detect = thmc50_detect,
|
|
.address_list = normal_i2c,
|
|
};
|
|
|
|
module_i2c_driver(thmc50_driver);
|
|
|
|
MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>");
|
|
MODULE_DESCRIPTION("THMC50 driver");
|