648 lines
18 KiB
C
648 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* lm80.c - From lm_sensors, Linux kernel modules for hardware
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* monitoring
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* Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
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* and Philip Edelbrock <phil@netroedge.com>
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*
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* Ported to Linux 2.6 by Tiago Sousa <mirage@kaotik.org>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
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0x2e, 0x2f, I2C_CLIENT_END };
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/* Many LM80 constants specified below */
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/* The LM80 registers */
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#define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)
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#define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)
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#define LM80_REG_IN(nr) (0x20 + (nr))
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#define LM80_REG_FAN1 0x28
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#define LM80_REG_FAN2 0x29
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#define LM80_REG_FAN_MIN(nr) (0x3b + (nr))
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#define LM80_REG_TEMP 0x27
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#define LM80_REG_TEMP_HOT_MAX 0x38
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#define LM80_REG_TEMP_HOT_HYST 0x39
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#define LM80_REG_TEMP_OS_MAX 0x3a
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#define LM80_REG_TEMP_OS_HYST 0x3b
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#define LM80_REG_CONFIG 0x00
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#define LM80_REG_ALARM1 0x01
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#define LM80_REG_ALARM2 0x02
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#define LM80_REG_MASK1 0x03
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#define LM80_REG_MASK2 0x04
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#define LM80_REG_FANDIV 0x05
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#define LM80_REG_RES 0x06
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#define LM96080_REG_CONV_RATE 0x07
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#define LM96080_REG_MAN_ID 0x3e
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#define LM96080_REG_DEV_ID 0x3f
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/*
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* Conversions. Rounding and limit checking is only done on the TO_REG
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* variants. Note that you should be a bit careful with which arguments
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* these macros are called: arguments may be evaluated more than once.
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* Fixing this is just not worth it.
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*/
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#define IN_TO_REG(val) (clamp_val(((val) + 5) / 10, 0, 255))
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#define IN_FROM_REG(val) ((val) * 10)
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static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div)
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{
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if (rpm == 0)
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return 255;
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rpm = clamp_val(rpm, 1, 1000000);
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return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
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}
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#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
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(val) == 255 ? 0 : 1350000/((div) * (val)))
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#define TEMP_FROM_REG(reg) ((reg) * 125 / 32)
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#define TEMP_TO_REG(temp) (DIV_ROUND_CLOSEST(clamp_val((temp), \
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-128000, 127000), 1000) << 8)
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#define DIV_FROM_REG(val) (1 << (val))
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enum temp_index {
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t_input = 0,
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t_hot_max,
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t_hot_hyst,
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t_os_max,
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t_os_hyst,
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t_num_temp
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};
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static const u8 temp_regs[t_num_temp] = {
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[t_input] = LM80_REG_TEMP,
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[t_hot_max] = LM80_REG_TEMP_HOT_MAX,
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[t_hot_hyst] = LM80_REG_TEMP_HOT_HYST,
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[t_os_max] = LM80_REG_TEMP_OS_MAX,
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[t_os_hyst] = LM80_REG_TEMP_OS_HYST,
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};
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enum in_index {
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i_input = 0,
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i_max,
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i_min,
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i_num_in
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};
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enum fan_index {
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f_input,
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f_min,
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f_num_fan
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};
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/*
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* Client data (each client gets its own)
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*/
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struct lm80_data {
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struct i2c_client *client;
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struct mutex update_lock;
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char error; /* !=0 if error occurred during last update */
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bool valid; /* true if following fields are valid */
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unsigned long last_updated; /* In jiffies */
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u8 in[i_num_in][7]; /* Register value, 1st index is enum in_index */
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u8 fan[f_num_fan][2]; /* Register value, 1st index enum fan_index */
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u8 fan_div[2]; /* Register encoding, shifted right */
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s16 temp[t_num_temp]; /* Register values, normalized to 16 bit */
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u16 alarms; /* Register encoding, combined */
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};
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static int lm80_read_value(struct i2c_client *client, u8 reg)
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{
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
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{
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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/* Called when we have found a new LM80 and after read errors */
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static void lm80_init_client(struct i2c_client *client)
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{
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/*
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* Reset all except Watchdog values and last conversion values
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* This sets fan-divs to 2, among others. This makes most other
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* initializations unnecessary
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*/
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lm80_write_value(client, LM80_REG_CONFIG, 0x80);
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/* Set 11-bit temperature resolution */
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lm80_write_value(client, LM80_REG_RES, 0x08);
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/* Start monitoring */
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lm80_write_value(client, LM80_REG_CONFIG, 0x01);
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}
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static struct lm80_data *lm80_update_device(struct device *dev)
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{
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struct lm80_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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int i;
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int rv;
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int prev_rv;
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struct lm80_data *ret = data;
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mutex_lock(&data->update_lock);
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if (data->error)
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lm80_init_client(client);
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if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
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dev_dbg(dev, "Starting lm80 update\n");
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for (i = 0; i <= 6; i++) {
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rv = lm80_read_value(client, LM80_REG_IN(i));
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if (rv < 0)
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goto abort;
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data->in[i_input][i] = rv;
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rv = lm80_read_value(client, LM80_REG_IN_MIN(i));
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if (rv < 0)
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goto abort;
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data->in[i_min][i] = rv;
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rv = lm80_read_value(client, LM80_REG_IN_MAX(i));
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if (rv < 0)
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goto abort;
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data->in[i_max][i] = rv;
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}
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rv = lm80_read_value(client, LM80_REG_FAN1);
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if (rv < 0)
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goto abort;
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data->fan[f_input][0] = rv;
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rv = lm80_read_value(client, LM80_REG_FAN_MIN(1));
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if (rv < 0)
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goto abort;
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data->fan[f_min][0] = rv;
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rv = lm80_read_value(client, LM80_REG_FAN2);
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if (rv < 0)
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goto abort;
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data->fan[f_input][1] = rv;
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rv = lm80_read_value(client, LM80_REG_FAN_MIN(2));
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if (rv < 0)
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goto abort;
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data->fan[f_min][1] = rv;
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prev_rv = rv = lm80_read_value(client, LM80_REG_TEMP);
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if (rv < 0)
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goto abort;
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rv = lm80_read_value(client, LM80_REG_RES);
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if (rv < 0)
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goto abort;
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data->temp[t_input] = (prev_rv << 8) | (rv & 0xf0);
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for (i = t_input + 1; i < t_num_temp; i++) {
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rv = lm80_read_value(client, temp_regs[i]);
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if (rv < 0)
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goto abort;
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data->temp[i] = rv << 8;
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}
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rv = lm80_read_value(client, LM80_REG_FANDIV);
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if (rv < 0)
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goto abort;
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data->fan_div[0] = (rv >> 2) & 0x03;
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data->fan_div[1] = (rv >> 4) & 0x03;
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prev_rv = rv = lm80_read_value(client, LM80_REG_ALARM1);
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if (rv < 0)
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goto abort;
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rv = lm80_read_value(client, LM80_REG_ALARM2);
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if (rv < 0)
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goto abort;
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data->alarms = prev_rv + (rv << 8);
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data->last_updated = jiffies;
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data->valid = true;
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data->error = 0;
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}
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goto done;
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abort:
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ret = ERR_PTR(rv);
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data->valid = false;
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data->error = 1;
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done:
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mutex_unlock(&data->update_lock);
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return ret;
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}
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/*
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* Sysfs stuff
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*/
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static ssize_t in_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct lm80_data *data = lm80_update_device(dev);
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int index = to_sensor_dev_attr_2(attr)->index;
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int nr = to_sensor_dev_attr_2(attr)->nr;
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if (IS_ERR(data))
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return PTR_ERR(data);
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr][index]));
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}
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static ssize_t in_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct lm80_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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int index = to_sensor_dev_attr_2(attr)->index;
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int nr = to_sensor_dev_attr_2(attr)->nr;
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long val;
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u8 reg;
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int err = kstrtol(buf, 10, &val);
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if (err < 0)
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return err;
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reg = nr == i_min ? LM80_REG_IN_MIN(index) : LM80_REG_IN_MAX(index);
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mutex_lock(&data->update_lock);
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data->in[nr][index] = IN_TO_REG(val);
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lm80_write_value(client, reg, data->in[nr][index]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int index = to_sensor_dev_attr_2(attr)->index;
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int nr = to_sensor_dev_attr_2(attr)->nr;
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struct lm80_data *data = lm80_update_device(dev);
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if (IS_ERR(data))
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return PTR_ERR(data);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr][index],
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DIV_FROM_REG(data->fan_div[index])));
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}
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static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct lm80_data *data = lm80_update_device(dev);
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if (IS_ERR(data))
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return PTR_ERR(data);
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return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
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}
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static ssize_t fan_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int index = to_sensor_dev_attr_2(attr)->index;
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int nr = to_sensor_dev_attr_2(attr)->nr;
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struct lm80_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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unsigned long val;
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int err = kstrtoul(buf, 10, &val);
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if (err < 0)
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return err;
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mutex_lock(&data->update_lock);
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data->fan[nr][index] = FAN_TO_REG(val,
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DIV_FROM_REG(data->fan_div[index]));
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lm80_write_value(client, LM80_REG_FAN_MIN(index + 1),
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data->fan[nr][index]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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/*
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* Note: we save and restore the fan minimum here, because its value is
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* determined in part by the fan divisor. This follows the principle of
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* least surprise; the user doesn't expect the fan minimum to change just
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* because the divisor changed.
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*/
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static ssize_t fan_div_store(struct device *dev,
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struct device_attribute *attr, const char *buf,
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size_t count)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct lm80_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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unsigned long min, val;
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u8 reg;
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int rv;
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rv = kstrtoul(buf, 10, &val);
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if (rv < 0)
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return rv;
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/* Save fan_min */
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mutex_lock(&data->update_lock);
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min = FAN_FROM_REG(data->fan[f_min][nr],
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DIV_FROM_REG(data->fan_div[nr]));
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switch (val) {
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case 1:
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data->fan_div[nr] = 0;
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break;
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case 2:
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data->fan_div[nr] = 1;
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break;
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case 4:
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data->fan_div[nr] = 2;
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break;
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case 8:
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data->fan_div[nr] = 3;
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break;
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default:
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dev_err(dev,
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"fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n",
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val);
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mutex_unlock(&data->update_lock);
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return -EINVAL;
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}
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rv = lm80_read_value(client, LM80_REG_FANDIV);
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if (rv < 0) {
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mutex_unlock(&data->update_lock);
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return rv;
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}
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reg = (rv & ~(3 << (2 * (nr + 1))))
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| (data->fan_div[nr] << (2 * (nr + 1)));
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lm80_write_value(client, LM80_REG_FANDIV, reg);
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/* Restore fan_min */
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data->fan[f_min][nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
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lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1),
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data->fan[f_min][nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct lm80_data *data = lm80_update_device(dev);
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if (IS_ERR(data))
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return PTR_ERR(data);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
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}
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static ssize_t temp_store(struct device *dev,
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struct device_attribute *devattr, const char *buf,
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size_t count)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct lm80_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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int nr = attr->index;
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long val;
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int err = kstrtol(buf, 10, &val);
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if (err < 0)
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return err;
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mutex_lock(&data->update_lock);
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data->temp[nr] = TEMP_TO_REG(val);
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lm80_write_value(client, temp_regs[nr], data->temp[nr] >> 8);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct lm80_data *data = lm80_update_device(dev);
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if (IS_ERR(data))
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return PTR_ERR(data);
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return sprintf(buf, "%u\n", data->alarms);
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}
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static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int bitnr = to_sensor_dev_attr(attr)->index;
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struct lm80_data *data = lm80_update_device(dev);
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if (IS_ERR(data))
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return PTR_ERR(data);
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return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
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}
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static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, i_min, 0);
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static SENSOR_DEVICE_ATTR_2_RW(in1_min, in, i_min, 1);
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static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, i_min, 2);
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static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, i_min, 3);
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static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, i_min, 4);
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static SENSOR_DEVICE_ATTR_2_RW(in5_min, in, i_min, 5);
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static SENSOR_DEVICE_ATTR_2_RW(in6_min, in, i_min, 6);
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static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, i_max, 0);
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static SENSOR_DEVICE_ATTR_2_RW(in1_max, in, i_max, 1);
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static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, i_max, 2);
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static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, i_max, 3);
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static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, i_max, 4);
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static SENSOR_DEVICE_ATTR_2_RW(in5_max, in, i_max, 5);
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static SENSOR_DEVICE_ATTR_2_RW(in6_max, in, i_max, 6);
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static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, i_input, 0);
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static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, i_input, 1);
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static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, i_input, 2);
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static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, i_input, 3);
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static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, i_input, 4);
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static SENSOR_DEVICE_ATTR_2_RO(in5_input, in, i_input, 5);
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static SENSOR_DEVICE_ATTR_2_RO(in6_input, in, i_input, 6);
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static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan, f_min, 0);
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static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan, f_min, 1);
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static SENSOR_DEVICE_ATTR_2_RO(fan1_input, fan, f_input, 0);
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static SENSOR_DEVICE_ATTR_2_RO(fan2_input, fan, f_input, 1);
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static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
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static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
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static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, t_input);
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static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, t_hot_max);
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static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp, t_hot_hyst);
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static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp, t_os_max);
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static SENSOR_DEVICE_ATTR_RW(temp1_crit_hyst, temp, t_os_hyst);
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static DEVICE_ATTR_RO(alarms);
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static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
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static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
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static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
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static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
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static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 4);
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static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 5);
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static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 6);
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static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 10);
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static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 11);
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static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 8);
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static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 13);
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|
|
|
/*
|
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* Real code
|
|
*/
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|
|
|
static struct attribute *lm80_attrs[] = {
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&sensor_dev_attr_in0_min.dev_attr.attr,
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&sensor_dev_attr_in1_min.dev_attr.attr,
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&sensor_dev_attr_in2_min.dev_attr.attr,
|
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&sensor_dev_attr_in3_min.dev_attr.attr,
|
|
&sensor_dev_attr_in4_min.dev_attr.attr,
|
|
&sensor_dev_attr_in5_min.dev_attr.attr,
|
|
&sensor_dev_attr_in6_min.dev_attr.attr,
|
|
&sensor_dev_attr_in0_max.dev_attr.attr,
|
|
&sensor_dev_attr_in1_max.dev_attr.attr,
|
|
&sensor_dev_attr_in2_max.dev_attr.attr,
|
|
&sensor_dev_attr_in3_max.dev_attr.attr,
|
|
&sensor_dev_attr_in4_max.dev_attr.attr,
|
|
&sensor_dev_attr_in5_max.dev_attr.attr,
|
|
&sensor_dev_attr_in6_max.dev_attr.attr,
|
|
&sensor_dev_attr_in0_input.dev_attr.attr,
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
&sensor_dev_attr_in3_input.dev_attr.attr,
|
|
&sensor_dev_attr_in4_input.dev_attr.attr,
|
|
&sensor_dev_attr_in5_input.dev_attr.attr,
|
|
&sensor_dev_attr_in6_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_div.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
|
|
&dev_attr_alarms.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_in4_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in5_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in6_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
|
|
NULL
|
|
};
|
|
ATTRIBUTE_GROUPS(lm80);
|
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
|
static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
int i, cur, man_id, dev_id;
|
|
const char *name = NULL;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
/* First check for unused bits, common to both chip types */
|
|
if ((lm80_read_value(client, LM80_REG_ALARM2) & 0xc0)
|
|
|| (lm80_read_value(client, LM80_REG_CONFIG) & 0x80))
|
|
return -ENODEV;
|
|
|
|
/*
|
|
* The LM96080 has manufacturer and stepping/die rev registers so we
|
|
* can just check that. The LM80 does not have such registers so we
|
|
* have to use a more expensive trick.
|
|
*/
|
|
man_id = lm80_read_value(client, LM96080_REG_MAN_ID);
|
|
dev_id = lm80_read_value(client, LM96080_REG_DEV_ID);
|
|
if (man_id == 0x01 && dev_id == 0x08) {
|
|
/* Check more unused bits for confirmation */
|
|
if (lm80_read_value(client, LM96080_REG_CONV_RATE) & 0xfe)
|
|
return -ENODEV;
|
|
|
|
name = "lm96080";
|
|
} else {
|
|
/* Check 6-bit addressing */
|
|
for (i = 0x2a; i <= 0x3d; i++) {
|
|
cur = i2c_smbus_read_byte_data(client, i);
|
|
if ((i2c_smbus_read_byte_data(client, i + 0x40) != cur)
|
|
|| (i2c_smbus_read_byte_data(client, i + 0x80) != cur)
|
|
|| (i2c_smbus_read_byte_data(client, i + 0xc0) != cur))
|
|
return -ENODEV;
|
|
}
|
|
|
|
name = "lm80";
|
|
}
|
|
|
|
strscpy(info->type, name, I2C_NAME_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lm80_probe(struct i2c_client *client)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct device *hwmon_dev;
|
|
struct lm80_data *data;
|
|
|
|
data = devm_kzalloc(dev, sizeof(struct lm80_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->client = client;
|
|
mutex_init(&data->update_lock);
|
|
|
|
/* Initialize the LM80 chip */
|
|
lm80_init_client(client);
|
|
|
|
/* A few vars need to be filled upon startup */
|
|
data->fan[f_min][0] = lm80_read_value(client, LM80_REG_FAN_MIN(1));
|
|
data->fan[f_min][1] = lm80_read_value(client, LM80_REG_FAN_MIN(2));
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
|
|
data, lm80_groups);
|
|
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
/*
|
|
* Driver data (common to all clients)
|
|
*/
|
|
|
|
static const struct i2c_device_id lm80_id[] = {
|
|
{ "lm80", 0 },
|
|
{ "lm96080", 1 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, lm80_id);
|
|
|
|
static struct i2c_driver lm80_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = "lm80",
|
|
},
|
|
.probe_new = lm80_probe,
|
|
.id_table = lm80_id,
|
|
.detect = lm80_detect,
|
|
.address_list = normal_i2c,
|
|
};
|
|
|
|
module_i2c_driver(lm80_driver);
|
|
|
|
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "
|
|
"Philip Edelbrock <phil@netroedge.com>");
|
|
MODULE_DESCRIPTION("LM80 driver");
|
|
MODULE_LICENSE("GPL");
|