mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
![Wolfram Sang](/assets/img/avatar_default.png)
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20220818210014.6769-1-wsa+renesas@sang-engineering.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
667 lines
20 KiB
C
667 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware
|
|
* monitoring
|
|
* Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and
|
|
* Kyosti Malkki <kmalkki@cc.hut.fi>
|
|
* Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and
|
|
* Jean Delvare <jdelvare@suse.de>
|
|
*
|
|
* Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare
|
|
* and advice of Greg Kroah-Hartman.
|
|
*
|
|
* Notes about the port:
|
|
* Release 0x00 of the GL518SM chipset doesn't support reading of in0,
|
|
* in1 nor in2. The original driver had an ugly workaround to get them
|
|
* anyway (changing limits and watching alarms trigger and wear off).
|
|
* 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
|
|
* with no real benefit.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/hwmon.h>
|
|
#include <linux/hwmon-sysfs.h>
|
|
#include <linux/err.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/sysfs.h>
|
|
|
|
/* Addresses to scan */
|
|
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
|
|
|
|
enum chips { gl518sm_r00, gl518sm_r80 };
|
|
|
|
/* Many GL518 constants specified below */
|
|
|
|
/* The GL518 registers */
|
|
#define GL518_REG_CHIP_ID 0x00
|
|
#define GL518_REG_REVISION 0x01
|
|
#define GL518_REG_VENDOR_ID 0x02
|
|
#define GL518_REG_CONF 0x03
|
|
#define GL518_REG_TEMP_IN 0x04
|
|
#define GL518_REG_TEMP_MAX 0x05
|
|
#define GL518_REG_TEMP_HYST 0x06
|
|
#define GL518_REG_FAN_COUNT 0x07
|
|
#define GL518_REG_FAN_LIMIT 0x08
|
|
#define GL518_REG_VIN1_LIMIT 0x09
|
|
#define GL518_REG_VIN2_LIMIT 0x0a
|
|
#define GL518_REG_VIN3_LIMIT 0x0b
|
|
#define GL518_REG_VDD_LIMIT 0x0c
|
|
#define GL518_REG_VIN3 0x0d
|
|
#define GL518_REG_MISC 0x0f
|
|
#define GL518_REG_ALARM 0x10
|
|
#define GL518_REG_MASK 0x11
|
|
#define GL518_REG_INT 0x12
|
|
#define GL518_REG_VIN2 0x13
|
|
#define GL518_REG_VIN1 0x14
|
|
#define GL518_REG_VDD 0x15
|
|
|
|
|
|
/*
|
|
* Conversions. Rounding and limit checking is only done on the TO_REG
|
|
* variants. Note that you should be a bit careful with which arguments
|
|
* these macros are called: arguments may be evaluated more than once.
|
|
* Fixing this is just not worth it.
|
|
*/
|
|
|
|
#define RAW_FROM_REG(val) val
|
|
|
|
#define BOOL_FROM_REG(val) ((val) ? 0 : 1)
|
|
#define BOOL_TO_REG(val) ((val) ? 0 : 1)
|
|
|
|
#define TEMP_CLAMP(val) clamp_val(val, -119000, 136000)
|
|
#define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 119)
|
|
#define TEMP_FROM_REG(val) (((val) - 119) * 1000)
|
|
|
|
static inline u8 FAN_TO_REG(long rpm, int div)
|
|
{
|
|
long rpmdiv;
|
|
if (rpm == 0)
|
|
return 0;
|
|
rpmdiv = clamp_val(rpm, 1, 960000) * div;
|
|
return clamp_val((480000 + rpmdiv / 2) / rpmdiv, 1, 255);
|
|
}
|
|
#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) * (div))))
|
|
|
|
#define IN_CLAMP(val) clamp_val(val, 0, 255 * 19)
|
|
#define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19)
|
|
#define IN_FROM_REG(val) ((val) * 19)
|
|
|
|
#define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4)
|
|
#define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95)
|
|
#define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4)
|
|
|
|
#define DIV_FROM_REG(val) (1 << (val))
|
|
|
|
#define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask)
|
|
#define BEEP_MASK_FROM_REG(val) ((val) & 0x7f)
|
|
|
|
/* Each client has this additional data */
|
|
struct gl518_data {
|
|
struct i2c_client *client;
|
|
const struct attribute_group *groups[3];
|
|
enum chips type;
|
|
|
|
struct mutex update_lock;
|
|
bool valid; /* true if following fields are valid */
|
|
unsigned long last_updated; /* In jiffies */
|
|
|
|
u8 voltage_in[4]; /* Register values; [0] = VDD */
|
|
u8 voltage_min[4]; /* Register values; [0] = VDD */
|
|
u8 voltage_max[4]; /* Register values; [0] = VDD */
|
|
u8 fan_in[2];
|
|
u8 fan_min[2];
|
|
u8 fan_div[2]; /* Register encoding, shifted right */
|
|
u8 fan_auto1; /* Boolean */
|
|
u8 temp_in; /* Register values */
|
|
u8 temp_max; /* Register values */
|
|
u8 temp_hyst; /* Register values */
|
|
u8 alarms; /* Register value */
|
|
u8 alarm_mask;
|
|
u8 beep_mask; /* Register value */
|
|
u8 beep_enable; /* Boolean */
|
|
};
|
|
|
|
/*
|
|
* Registers 0x07 to 0x0c are word-sized, others are byte-sized
|
|
* GL518 uses a high-byte first convention, which is exactly opposite to
|
|
* the SMBus standard.
|
|
*/
|
|
static int gl518_read_value(struct i2c_client *client, u8 reg)
|
|
{
|
|
if ((reg >= 0x07) && (reg <= 0x0c))
|
|
return i2c_smbus_read_word_swapped(client, reg);
|
|
else
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
}
|
|
|
|
static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value)
|
|
{
|
|
if ((reg >= 0x07) && (reg <= 0x0c))
|
|
return i2c_smbus_write_word_swapped(client, reg, value);
|
|
else
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
static struct gl518_data *gl518_update_device(struct device *dev)
|
|
{
|
|
struct gl518_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int val;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|
|
|| !data->valid) {
|
|
dev_dbg(&client->dev, "Starting gl518 update\n");
|
|
|
|
data->alarms = gl518_read_value(client, GL518_REG_INT);
|
|
data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);
|
|
|
|
val = gl518_read_value(client, GL518_REG_VDD_LIMIT);
|
|
data->voltage_min[0] = val & 0xff;
|
|
data->voltage_max[0] = (val >> 8) & 0xff;
|
|
val = gl518_read_value(client, GL518_REG_VIN1_LIMIT);
|
|
data->voltage_min[1] = val & 0xff;
|
|
data->voltage_max[1] = (val >> 8) & 0xff;
|
|
val = gl518_read_value(client, GL518_REG_VIN2_LIMIT);
|
|
data->voltage_min[2] = val & 0xff;
|
|
data->voltage_max[2] = (val >> 8) & 0xff;
|
|
val = gl518_read_value(client, GL518_REG_VIN3_LIMIT);
|
|
data->voltage_min[3] = val & 0xff;
|
|
data->voltage_max[3] = (val >> 8) & 0xff;
|
|
|
|
val = gl518_read_value(client, GL518_REG_FAN_COUNT);
|
|
data->fan_in[0] = (val >> 8) & 0xff;
|
|
data->fan_in[1] = val & 0xff;
|
|
|
|
val = gl518_read_value(client, GL518_REG_FAN_LIMIT);
|
|
data->fan_min[0] = (val >> 8) & 0xff;
|
|
data->fan_min[1] = val & 0xff;
|
|
|
|
data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN);
|
|
data->temp_max =
|
|
gl518_read_value(client, GL518_REG_TEMP_MAX);
|
|
data->temp_hyst =
|
|
gl518_read_value(client, GL518_REG_TEMP_HYST);
|
|
|
|
val = gl518_read_value(client, GL518_REG_MISC);
|
|
data->fan_div[0] = (val >> 6) & 0x03;
|
|
data->fan_div[1] = (val >> 4) & 0x03;
|
|
data->fan_auto1 = (val >> 3) & 0x01;
|
|
|
|
data->alarms &= data->alarm_mask;
|
|
|
|
val = gl518_read_value(client, GL518_REG_CONF);
|
|
data->beep_enable = (val >> 2) & 1;
|
|
|
|
if (data->type != gl518sm_r00) {
|
|
data->voltage_in[0] =
|
|
gl518_read_value(client, GL518_REG_VDD);
|
|
data->voltage_in[1] =
|
|
gl518_read_value(client, GL518_REG_VIN1);
|
|
data->voltage_in[2] =
|
|
gl518_read_value(client, GL518_REG_VIN2);
|
|
}
|
|
data->voltage_in[3] =
|
|
gl518_read_value(client, GL518_REG_VIN3);
|
|
|
|
data->last_updated = jiffies;
|
|
data->valid = true;
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
/*
|
|
* Sysfs stuff
|
|
*/
|
|
|
|
#define show(type, suffix, value) \
|
|
static ssize_t show_##suffix(struct device *dev, \
|
|
struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
struct gl518_data *data = gl518_update_device(dev); \
|
|
return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \
|
|
}
|
|
|
|
show(TEMP, temp_input1, temp_in);
|
|
show(TEMP, temp_max1, temp_max);
|
|
show(TEMP, temp_hyst1, temp_hyst);
|
|
show(BOOL, fan_auto1, fan_auto1);
|
|
show(VDD, in_input0, voltage_in[0]);
|
|
show(IN, in_input1, voltage_in[1]);
|
|
show(IN, in_input2, voltage_in[2]);
|
|
show(IN, in_input3, voltage_in[3]);
|
|
show(VDD, in_min0, voltage_min[0]);
|
|
show(IN, in_min1, voltage_min[1]);
|
|
show(IN, in_min2, voltage_min[2]);
|
|
show(IN, in_min3, voltage_min[3]);
|
|
show(VDD, in_max0, voltage_max[0]);
|
|
show(IN, in_max1, voltage_max[1]);
|
|
show(IN, in_max2, voltage_max[2]);
|
|
show(IN, in_max3, voltage_max[3]);
|
|
show(RAW, alarms, alarms);
|
|
show(BOOL, beep_enable, beep_enable);
|
|
show(BEEP_MASK, beep_mask, beep_mask);
|
|
|
|
static ssize_t fan_input_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct gl518_data *data = gl518_update_device(dev);
|
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr],
|
|
DIV_FROM_REG(data->fan_div[nr])));
|
|
}
|
|
|
|
static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct gl518_data *data = gl518_update_device(dev);
|
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
|
|
DIV_FROM_REG(data->fan_div[nr])));
|
|
}
|
|
|
|
static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct gl518_data *data = gl518_update_device(dev);
|
|
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
|
|
}
|
|
|
|
#define set(type, suffix, value, reg) \
|
|
static ssize_t set_##suffix(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
struct gl518_data *data = dev_get_drvdata(dev); \
|
|
struct i2c_client *client = data->client; \
|
|
long val; \
|
|
int err = kstrtol(buf, 10, &val); \
|
|
if (err) \
|
|
return err; \
|
|
\
|
|
mutex_lock(&data->update_lock); \
|
|
data->value = type##_TO_REG(val); \
|
|
gl518_write_value(client, reg, data->value); \
|
|
mutex_unlock(&data->update_lock); \
|
|
return count; \
|
|
}
|
|
|
|
#define set_bits(type, suffix, value, reg, mask, shift) \
|
|
static ssize_t set_##suffix(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
struct gl518_data *data = dev_get_drvdata(dev); \
|
|
struct i2c_client *client = data->client; \
|
|
int regvalue; \
|
|
unsigned long val; \
|
|
int err = kstrtoul(buf, 10, &val); \
|
|
if (err) \
|
|
return err; \
|
|
\
|
|
mutex_lock(&data->update_lock); \
|
|
regvalue = gl518_read_value(client, reg); \
|
|
data->value = type##_TO_REG(val); \
|
|
regvalue = (regvalue & ~mask) | (data->value << shift); \
|
|
gl518_write_value(client, reg, regvalue); \
|
|
mutex_unlock(&data->update_lock); \
|
|
return count; \
|
|
}
|
|
|
|
#define set_low(type, suffix, value, reg) \
|
|
set_bits(type, suffix, value, reg, 0x00ff, 0)
|
|
#define set_high(type, suffix, value, reg) \
|
|
set_bits(type, suffix, value, reg, 0xff00, 8)
|
|
|
|
set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX);
|
|
set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST);
|
|
set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3);
|
|
set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT);
|
|
set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT);
|
|
set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT);
|
|
set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT);
|
|
set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT);
|
|
set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT);
|
|
set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT);
|
|
set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT);
|
|
set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2);
|
|
set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM);
|
|
|
|
static ssize_t fan_min_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
struct gl518_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
int regvalue;
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT);
|
|
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
|
|
regvalue = (regvalue & (0xff << (8 * nr)))
|
|
| (data->fan_min[nr] << (8 * (1 - nr)));
|
|
gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue);
|
|
|
|
data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);
|
|
if (data->fan_min[nr] == 0)
|
|
data->alarm_mask &= ~(0x20 << nr);
|
|
else
|
|
data->alarm_mask |= (0x20 << nr);
|
|
data->beep_mask &= data->alarm_mask;
|
|
gl518_write_value(client, GL518_REG_ALARM, data->beep_mask);
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t fan_div_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
struct gl518_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
int regvalue;
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
switch (val) {
|
|
case 1:
|
|
val = 0;
|
|
break;
|
|
case 2:
|
|
val = 1;
|
|
break;
|
|
case 4:
|
|
val = 2;
|
|
break;
|
|
case 8:
|
|
val = 3;
|
|
break;
|
|
default:
|
|
dev_err(dev,
|
|
"Invalid fan clock divider %lu, choose one of 1, 2, 4 or 8\n",
|
|
val);
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&data->update_lock);
|
|
regvalue = gl518_read_value(client, GL518_REG_MISC);
|
|
data->fan_div[nr] = val;
|
|
regvalue = (regvalue & ~(0xc0 >> (2 * nr)))
|
|
| (data->fan_div[nr] << (6 - 2 * nr));
|
|
gl518_write_value(client, GL518_REG_MISC, regvalue);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(temp1_input, 0444, show_temp_input1, NULL);
|
|
static DEVICE_ATTR(temp1_max, 0644, show_temp_max1, set_temp_max1);
|
|
static DEVICE_ATTR(temp1_max_hyst, 0644,
|
|
show_temp_hyst1, set_temp_hyst1);
|
|
static DEVICE_ATTR(fan1_auto, 0644, show_fan_auto1, set_fan_auto1);
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0);
|
|
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1);
|
|
static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
|
|
static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
|
|
static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
|
|
static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
|
|
static DEVICE_ATTR(in0_input, 0444, show_in_input0, NULL);
|
|
static DEVICE_ATTR(in1_input, 0444, show_in_input1, NULL);
|
|
static DEVICE_ATTR(in2_input, 0444, show_in_input2, NULL);
|
|
static DEVICE_ATTR(in3_input, 0444, show_in_input3, NULL);
|
|
static DEVICE_ATTR(in0_min, 0644, show_in_min0, set_in_min0);
|
|
static DEVICE_ATTR(in1_min, 0644, show_in_min1, set_in_min1);
|
|
static DEVICE_ATTR(in2_min, 0644, show_in_min2, set_in_min2);
|
|
static DEVICE_ATTR(in3_min, 0644, show_in_min3, set_in_min3);
|
|
static DEVICE_ATTR(in0_max, 0644, show_in_max0, set_in_max0);
|
|
static DEVICE_ATTR(in1_max, 0644, show_in_max1, set_in_max1);
|
|
static DEVICE_ATTR(in2_max, 0644, show_in_max2, set_in_max2);
|
|
static DEVICE_ATTR(in3_max, 0644, show_in_max3, set_in_max3);
|
|
static DEVICE_ATTR(alarms, 0444, show_alarms, NULL);
|
|
static DEVICE_ATTR(beep_enable, 0644,
|
|
show_beep_enable, set_beep_enable);
|
|
static DEVICE_ATTR(beep_mask, 0644,
|
|
show_beep_mask, set_beep_mask);
|
|
|
|
static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int bitnr = to_sensor_dev_attr(attr)->index;
|
|
struct gl518_data *data = gl518_update_device(dev);
|
|
return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
|
|
static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
|
|
static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
|
|
static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4);
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5);
|
|
static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6);
|
|
|
|
static ssize_t beep_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int bitnr = to_sensor_dev_attr(attr)->index;
|
|
struct gl518_data *data = gl518_update_device(dev);
|
|
return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
|
|
}
|
|
|
|
static ssize_t beep_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct gl518_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int bitnr = to_sensor_dev_attr(attr)->index;
|
|
unsigned long bit;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &bit);
|
|
if (err)
|
|
return err;
|
|
|
|
if (bit & ~1)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);
|
|
if (bit)
|
|
data->beep_mask |= (1 << bitnr);
|
|
else
|
|
data->beep_mask &= ~(1 << bitnr);
|
|
gl518_write_value(client, GL518_REG_ALARM, data->beep_mask);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0);
|
|
static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1);
|
|
static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2);
|
|
static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3);
|
|
static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4);
|
|
static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5);
|
|
static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6);
|
|
|
|
static struct attribute *gl518_attributes[] = {
|
|
&dev_attr_in3_input.attr,
|
|
&dev_attr_in0_min.attr,
|
|
&dev_attr_in1_min.attr,
|
|
&dev_attr_in2_min.attr,
|
|
&dev_attr_in3_min.attr,
|
|
&dev_attr_in0_max.attr,
|
|
&dev_attr_in1_max.attr,
|
|
&dev_attr_in2_max.attr,
|
|
&dev_attr_in3_max.attr,
|
|
&sensor_dev_attr_in0_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in3_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in0_beep.dev_attr.attr,
|
|
&sensor_dev_attr_in1_beep.dev_attr.attr,
|
|
&sensor_dev_attr_in2_beep.dev_attr.attr,
|
|
&sensor_dev_attr_in3_beep.dev_attr.attr,
|
|
|
|
&dev_attr_fan1_auto.attr,
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_beep.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_beep.dev_attr.attr,
|
|
|
|
&dev_attr_temp1_input.attr,
|
|
&dev_attr_temp1_max.attr,
|
|
&dev_attr_temp1_max_hyst.attr,
|
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_beep.dev_attr.attr,
|
|
|
|
&dev_attr_alarms.attr,
|
|
&dev_attr_beep_enable.attr,
|
|
&dev_attr_beep_mask.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group gl518_group = {
|
|
.attrs = gl518_attributes,
|
|
};
|
|
|
|
static struct attribute *gl518_attributes_r80[] = {
|
|
&dev_attr_in0_input.attr,
|
|
&dev_attr_in1_input.attr,
|
|
&dev_attr_in2_input.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group gl518_group_r80 = {
|
|
.attrs = gl518_attributes_r80,
|
|
};
|
|
|
|
/*
|
|
* Real code
|
|
*/
|
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
|
static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
int rev;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
|
|
I2C_FUNC_SMBUS_WORD_DATA))
|
|
return -ENODEV;
|
|
|
|
/* Now, we do the remaining detection. */
|
|
if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80)
|
|
|| (gl518_read_value(client, GL518_REG_CONF) & 0x80))
|
|
return -ENODEV;
|
|
|
|
/* Determine the chip type. */
|
|
rev = gl518_read_value(client, GL518_REG_REVISION);
|
|
if (rev != 0x00 && rev != 0x80)
|
|
return -ENODEV;
|
|
|
|
strscpy(info->type, "gl518sm", I2C_NAME_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Called when we have found a new GL518SM.
|
|
* Note that we preserve D4:NoFan2 and D2:beep_enable.
|
|
*/
|
|
static void gl518_init_client(struct i2c_client *client)
|
|
{
|
|
/* Make sure we leave D7:Reset untouched */
|
|
u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f;
|
|
|
|
/* Comparator mode (D3=0), standby mode (D6=0) */
|
|
gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37));
|
|
|
|
/* Never interrupts */
|
|
gl518_write_value(client, GL518_REG_MASK, 0x00);
|
|
|
|
/* Clear status register (D5=1), start (D6=1) */
|
|
gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue);
|
|
gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue);
|
|
}
|
|
|
|
static int gl518_probe(struct i2c_client *client)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct device *hwmon_dev;
|
|
struct gl518_data *data;
|
|
int revision;
|
|
|
|
data = devm_kzalloc(dev, sizeof(struct gl518_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->client = client;
|
|
revision = gl518_read_value(client, GL518_REG_REVISION);
|
|
data->type = revision == 0x80 ? gl518sm_r80 : gl518sm_r00;
|
|
mutex_init(&data->update_lock);
|
|
|
|
/* Initialize the GL518SM chip */
|
|
data->alarm_mask = 0xff;
|
|
gl518_init_client(client);
|
|
|
|
/* sysfs hooks */
|
|
data->groups[0] = &gl518_group;
|
|
if (data->type == gl518sm_r80)
|
|
data->groups[1] = &gl518_group_r80;
|
|
|
|
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 gl518_id[] = {
|
|
{ "gl518sm", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, gl518_id);
|
|
|
|
static struct i2c_driver gl518_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = "gl518sm",
|
|
},
|
|
.probe_new = gl518_probe,
|
|
.id_table = gl518_id,
|
|
.detect = gl518_detect,
|
|
.address_list = normal_i2c,
|
|
};
|
|
|
|
module_i2c_driver(gl518_driver);
|
|
|
|
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
|
|
"Kyosti Malkki <kmalkki@cc.hut.fi> and "
|
|
"Hong-Gunn Chew <hglinux@gunnet.org>");
|
|
MODULE_DESCRIPTION("GL518SM driver");
|
|
MODULE_LICENSE("GPL");
|