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95d80e7c83
The new-style gl518sm driver implements the optional detect() callback to cover the use cases of the legacy driver. Signed-off-by: Jean Delvare <khali@linux-fr.org>
715 lines
23 KiB
C
715 lines
23 KiB
C
/*
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* gl518sm.c - Part of 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> and
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* Kyosti Malkki <kmalkki@cc.hut.fi>
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* Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and
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* Jean Delvare <khali@linux-fr.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare
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* and advice of Greg Kroah-Hartman.
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*
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* Notes about the port:
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* Release 0x00 of the GL518SM chipset doesn't support reading of in0,
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* in1 nor in2. The original driver had an ugly workaround to get them
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* anyway (changing limits and watching alarms trigger and wear off).
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* We did not keep that part of the original driver in the Linux 2.6
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* version, since it was making the driver significantly more complex
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* with no real benefit.
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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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#include <linux/sysfs.h>
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_2(gl518sm_r00, gl518sm_r80);
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/* Many GL518 constants specified below */
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/* The GL518 registers */
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#define GL518_REG_CHIP_ID 0x00
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#define GL518_REG_REVISION 0x01
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#define GL518_REG_VENDOR_ID 0x02
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#define GL518_REG_CONF 0x03
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#define GL518_REG_TEMP_IN 0x04
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#define GL518_REG_TEMP_MAX 0x05
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#define GL518_REG_TEMP_HYST 0x06
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#define GL518_REG_FAN_COUNT 0x07
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#define GL518_REG_FAN_LIMIT 0x08
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#define GL518_REG_VIN1_LIMIT 0x09
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#define GL518_REG_VIN2_LIMIT 0x0a
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#define GL518_REG_VIN3_LIMIT 0x0b
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#define GL518_REG_VDD_LIMIT 0x0c
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#define GL518_REG_VIN3 0x0d
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#define GL518_REG_MISC 0x0f
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#define GL518_REG_ALARM 0x10
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#define GL518_REG_MASK 0x11
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#define GL518_REG_INT 0x12
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#define GL518_REG_VIN2 0x13
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#define GL518_REG_VIN1 0x14
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#define GL518_REG_VDD 0x15
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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 RAW_FROM_REG(val) val
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#define BOOL_FROM_REG(val) ((val)?0:1)
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#define BOOL_TO_REG(val) ((val)?0:1)
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#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \
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(val)-500:(val)+500)/1000)+119),0,255))
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#define TEMP_FROM_REG(val) (((val) - 119) * 1000)
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static inline u8 FAN_TO_REG(long rpm, int div)
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{
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long rpmdiv;
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if (rpm == 0)
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return 0;
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rpmdiv = SENSORS_LIMIT(rpm, 1, 960000) * div;
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return SENSORS_LIMIT((480000 + rpmdiv / 2) / rpmdiv, 1, 255);
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}
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#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val)*(div))))
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#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
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#define IN_FROM_REG(val) ((val)*19)
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#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
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#define VDD_FROM_REG(val) (((val)*95+2)/4)
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#define DIV_FROM_REG(val) (1 << (val))
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#define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask)
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#define BEEP_MASK_FROM_REG(val) ((val) & 0x7f)
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/* Each client has this additional data */
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struct gl518_data {
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struct device *hwmon_dev;
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enum chips type;
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struct mutex update_lock;
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char valid; /* !=0 if following fields are valid */
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unsigned long last_updated; /* In jiffies */
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u8 voltage_in[4]; /* Register values; [0] = VDD */
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u8 voltage_min[4]; /* Register values; [0] = VDD */
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u8 voltage_max[4]; /* Register values; [0] = VDD */
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u8 fan_in[2];
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u8 fan_min[2];
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u8 fan_div[2]; /* Register encoding, shifted right */
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u8 fan_auto1; /* Boolean */
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u8 temp_in; /* Register values */
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u8 temp_max; /* Register values */
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u8 temp_hyst; /* Register values */
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u8 alarms; /* Register value */
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u8 alarm_mask;
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u8 beep_mask; /* Register value */
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u8 beep_enable; /* Boolean */
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};
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static int gl518_probe(struct i2c_client *client,
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const struct i2c_device_id *id);
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static int gl518_detect(struct i2c_client *client, int kind,
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struct i2c_board_info *info);
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static void gl518_init_client(struct i2c_client *client);
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static int gl518_remove(struct i2c_client *client);
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static int gl518_read_value(struct i2c_client *client, u8 reg);
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static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value);
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static struct gl518_data *gl518_update_device(struct device *dev);
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static const struct i2c_device_id gl518_id[] = {
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{ "gl518sm", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, gl518_id);
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/* This is the driver that will be inserted */
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static struct i2c_driver gl518_driver = {
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.class = I2C_CLASS_HWMON,
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.driver = {
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.name = "gl518sm",
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},
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.probe = gl518_probe,
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.remove = gl518_remove,
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.id_table = gl518_id,
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.detect = gl518_detect,
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.address_data = &addr_data,
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};
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/*
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* Sysfs stuff
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*/
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#define show(type, suffix, value) \
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static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct gl518_data *data = gl518_update_device(dev); \
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return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \
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}
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show(TEMP, temp_input1, temp_in);
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show(TEMP, temp_max1, temp_max);
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show(TEMP, temp_hyst1, temp_hyst);
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show(BOOL, fan_auto1, fan_auto1);
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show(VDD, in_input0, voltage_in[0]);
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show(IN, in_input1, voltage_in[1]);
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show(IN, in_input2, voltage_in[2]);
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show(IN, in_input3, voltage_in[3]);
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show(VDD, in_min0, voltage_min[0]);
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show(IN, in_min1, voltage_min[1]);
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show(IN, in_min2, voltage_min[2]);
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show(IN, in_min3, voltage_min[3]);
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show(VDD, in_max0, voltage_max[0]);
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show(IN, in_max1, voltage_max[1]);
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show(IN, in_max2, voltage_max[2]);
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show(IN, in_max3, voltage_max[3]);
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show(RAW, alarms, alarms);
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show(BOOL, beep_enable, beep_enable);
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show(BEEP_MASK, beep_mask, beep_mask);
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static ssize_t show_fan_input(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct gl518_data *data = gl518_update_device(dev);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr],
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DIV_FROM_REG(data->fan_div[nr])));
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}
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static ssize_t show_fan_min(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct gl518_data *data = gl518_update_device(dev);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
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DIV_FROM_REG(data->fan_div[nr])));
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}
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static ssize_t show_fan_div(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct gl518_data *data = gl518_update_device(dev);
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return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
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}
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#define set(type, suffix, value, reg) \
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static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct gl518_data *data = i2c_get_clientdata(client); \
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long val = simple_strtol(buf, NULL, 10); \
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\
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mutex_lock(&data->update_lock); \
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data->value = type##_TO_REG(val); \
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gl518_write_value(client, reg, data->value); \
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mutex_unlock(&data->update_lock); \
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return count; \
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}
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#define set_bits(type, suffix, value, reg, mask, shift) \
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static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct gl518_data *data = i2c_get_clientdata(client); \
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int regvalue; \
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unsigned long val = simple_strtoul(buf, NULL, 10); \
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\
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mutex_lock(&data->update_lock); \
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regvalue = gl518_read_value(client, reg); \
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data->value = type##_TO_REG(val); \
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regvalue = (regvalue & ~mask) | (data->value << shift); \
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gl518_write_value(client, reg, regvalue); \
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mutex_unlock(&data->update_lock); \
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return count; \
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}
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#define set_low(type, suffix, value, reg) \
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set_bits(type, suffix, value, reg, 0x00ff, 0)
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#define set_high(type, suffix, value, reg) \
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set_bits(type, suffix, value, reg, 0xff00, 8)
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set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX);
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set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST);
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set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3);
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set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT);
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set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT);
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set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT);
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set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT);
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set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT);
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set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT);
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set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT);
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set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT);
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set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2);
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set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM);
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static ssize_t set_fan_min(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 i2c_client *client = to_i2c_client(dev);
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struct gl518_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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int regvalue;
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unsigned long val = simple_strtoul(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT);
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data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
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regvalue = (regvalue & (0xff << (8 * nr)))
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| (data->fan_min[nr] << (8 * (1 - nr)));
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gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue);
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data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);
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if (data->fan_min[nr] == 0)
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data->alarm_mask &= ~(0x20 << nr);
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else
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data->alarm_mask |= (0x20 << nr);
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data->beep_mask &= data->alarm_mask;
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gl518_write_value(client, GL518_REG_ALARM, data->beep_mask);
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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 set_fan_div(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 i2c_client *client = to_i2c_client(dev);
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struct gl518_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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int regvalue;
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unsigned long val = simple_strtoul(buf, NULL, 10);
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switch (val) {
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case 1: val = 0; break;
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case 2: val = 1; break;
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case 4: val = 2; break;
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case 8: val = 3; break;
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default:
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dev_err(dev, "Invalid fan clock divider %lu, choose one "
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"of 1, 2, 4 or 8\n", val);
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return -EINVAL;
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}
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mutex_lock(&data->update_lock);
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regvalue = gl518_read_value(client, GL518_REG_MISC);
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data->fan_div[nr] = val;
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regvalue = (regvalue & ~(0xc0 >> (2 * nr)))
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| (data->fan_div[nr] << (6 - 2 * nr));
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gl518_write_value(client, GL518_REG_MISC, regvalue);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
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static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1);
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static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO,
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show_temp_hyst1, set_temp_hyst1);
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static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1);
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static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0);
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static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1);
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static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO,
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show_fan_min, set_fan_min, 0);
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static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO,
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show_fan_min, set_fan_min, 1);
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static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO,
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show_fan_div, set_fan_div, 0);
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static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO,
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show_fan_div, set_fan_div, 1);
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static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL);
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static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL);
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static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL);
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static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL);
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static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0);
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static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1);
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static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2);
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static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3);
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static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0);
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static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1);
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static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2);
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static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3);
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static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
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static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO,
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show_beep_enable, set_beep_enable);
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static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO,
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show_beep_mask, set_beep_mask);
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static ssize_t show_alarm(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 gl518_data *data = gl518_update_device(dev);
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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(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
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static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
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static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
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static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
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static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
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static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
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static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
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|
|
static ssize_t show_beep(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 set_beep(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct gl518_data *data = i2c_get_clientdata(client);
|
|
int bitnr = to_sensor_dev_attr(attr)->index;
|
|
unsigned long bit;
|
|
|
|
bit = simple_strtoul(buf, NULL, 10);
|
|
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(in0_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 0);
|
|
static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 1);
|
|
static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 2);
|
|
static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 3);
|
|
static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 4);
|
|
static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 5);
|
|
static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_beep, set_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, int kind,
|
|
struct i2c_board_info *info)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
int i;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
|
|
I2C_FUNC_SMBUS_WORD_DATA))
|
|
return -ENODEV;
|
|
|
|
/* Now, we do the remaining detection. */
|
|
|
|
if (kind < 0) {
|
|
if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80)
|
|
|| (gl518_read_value(client, GL518_REG_CONF) & 0x80))
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Determine the chip type. */
|
|
if (kind <= 0) {
|
|
i = gl518_read_value(client, GL518_REG_REVISION);
|
|
if (i == 0x00) {
|
|
kind = gl518sm_r00;
|
|
} else if (i == 0x80) {
|
|
kind = gl518sm_r80;
|
|
} else {
|
|
if (kind <= 0)
|
|
dev_info(&adapter->dev,
|
|
"Ignoring 'force' parameter for unknown "
|
|
"chip at adapter %d, address 0x%02x\n",
|
|
i2c_adapter_id(adapter), client->addr);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
strlcpy(info->type, "gl518sm", I2C_NAME_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gl518_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct gl518_data *data;
|
|
int err, revision;
|
|
|
|
data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL);
|
|
if (!data) {
|
|
err = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
i2c_set_clientdata(client, data);
|
|
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);
|
|
|
|
/* Register sysfs hooks */
|
|
if ((err = sysfs_create_group(&client->dev.kobj, &gl518_group)))
|
|
goto exit_free;
|
|
if (data->type == gl518sm_r80)
|
|
if ((err = sysfs_create_group(&client->dev.kobj,
|
|
&gl518_group_r80)))
|
|
goto exit_remove_files;
|
|
|
|
data->hwmon_dev = hwmon_device_register(&client->dev);
|
|
if (IS_ERR(data->hwmon_dev)) {
|
|
err = PTR_ERR(data->hwmon_dev);
|
|
goto exit_remove_files;
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit_remove_files:
|
|
sysfs_remove_group(&client->dev.kobj, &gl518_group);
|
|
if (data->type == gl518sm_r80)
|
|
sysfs_remove_group(&client->dev.kobj, &gl518_group_r80);
|
|
exit_free:
|
|
kfree(data);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
|
|
/* 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_remove(struct i2c_client *client)
|
|
{
|
|
struct gl518_data *data = i2c_get_clientdata(client);
|
|
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
sysfs_remove_group(&client->dev.kobj, &gl518_group);
|
|
if (data->type == gl518sm_r80)
|
|
sysfs_remove_group(&client->dev.kobj, &gl518_group_r80);
|
|
|
|
kfree(data);
|
|
return 0;
|
|
}
|
|
|
|
/* 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 swab16(i2c_smbus_read_word_data(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_data(client, reg, swab16(value));
|
|
else
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
static struct gl518_data *gl518_update_device(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct gl518_data *data = i2c_get_clientdata(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 = 1;
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static int __init sensors_gl518sm_init(void)
|
|
{
|
|
return i2c_add_driver(&gl518_driver);
|
|
}
|
|
|
|
static void __exit sensors_gl518sm_exit(void)
|
|
{
|
|
i2c_del_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");
|
|
|
|
module_init(sensors_gl518sm_init);
|
|
module_exit(sensors_gl518sm_exit);
|