990 lines
31 KiB
C
990 lines
31 KiB
C
/*
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adm1031.c - Part of lm_sensors, Linux kernel modules for hardware
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monitoring
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Based on lm75.c and lm85.c
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Supports adm1030 / adm1031
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Copyright (C) 2004 Alexandre d'Alton <alex@alexdalton.org>
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Reworked by Jean Delvare <khali@linux-fr.org>
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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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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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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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#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/err.h>
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#include <linux/mutex.h>
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/* Following macros takes channel parameter starting from 0 to 2 */
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#define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr))
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#define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr))
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#define ADM1031_REG_PWM (0x22)
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#define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr))
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#define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4*(nr))
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#define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4*(nr))
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#define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4*(nr))
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#define ADM1031_REG_TEMP(nr) (0xa + (nr))
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#define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr))
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#define ADM1031_REG_STATUS(nr) (0x2 + (nr))
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#define ADM1031_REG_CONF1 0x0
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#define ADM1031_REG_CONF2 0x1
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#define ADM1031_REG_EXT_TEMP 0x6
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#define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */
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#define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */
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#define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */
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#define ADM1031_CONF2_PWM1_ENABLE 0x01
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#define ADM1031_CONF2_PWM2_ENABLE 0x02
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#define ADM1031_CONF2_TACH1_ENABLE 0x04
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#define ADM1031_CONF2_TACH2_ENABLE 0x08
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#define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan))
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/* Addresses to scan */
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static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_2(adm1030, adm1031);
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typedef u8 auto_chan_table_t[8][2];
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/* Each client has this additional data */
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struct adm1031_data {
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struct i2c_client client;
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struct class_device *class_dev;
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struct mutex update_lock;
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int chip_type;
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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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/* The chan_select_table contains the possible configurations for
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* auto fan control.
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*/
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auto_chan_table_t *chan_select_table;
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u16 alarm;
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u8 conf1;
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u8 conf2;
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u8 fan[2];
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u8 fan_div[2];
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u8 fan_min[2];
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u8 pwm[2];
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u8 old_pwm[2];
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s8 temp[3];
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u8 ext_temp[3];
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u8 auto_temp[3];
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u8 auto_temp_min[3];
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u8 auto_temp_off[3];
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u8 auto_temp_max[3];
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s8 temp_min[3];
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s8 temp_max[3];
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s8 temp_crit[3];
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};
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static int adm1031_attach_adapter(struct i2c_adapter *adapter);
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static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind);
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static void adm1031_init_client(struct i2c_client *client);
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static int adm1031_detach_client(struct i2c_client *client);
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static struct adm1031_data *adm1031_update_device(struct device *dev);
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/* This is the driver that will be inserted */
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static struct i2c_driver adm1031_driver = {
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.driver = {
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.name = "adm1031",
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},
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.attach_adapter = adm1031_attach_adapter,
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.detach_client = adm1031_detach_client,
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};
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static inline u8 adm1031_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 inline int
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adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int 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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#define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \
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((val + 500) / 1000)))
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#define TEMP_FROM_REG(val) ((val) * 1000)
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#define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125)
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#define FAN_FROM_REG(reg, div) ((reg) ? (11250 * 60) / ((reg) * (div)) : 0)
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static int FAN_TO_REG(int reg, int div)
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{
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int tmp;
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tmp = FAN_FROM_REG(SENSORS_LIMIT(reg, 0, 65535), div);
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return tmp > 255 ? 255 : tmp;
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}
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#define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6))
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#define PWM_TO_REG(val) (SENSORS_LIMIT((val), 0, 255) >> 4)
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#define PWM_FROM_REG(val) ((val) << 4)
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#define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7)
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#define FAN_CHAN_TO_REG(val, reg) \
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(((reg) & 0x1F) | (((val) << 5) & 0xe0))
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#define AUTO_TEMP_MIN_TO_REG(val, reg) \
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((((val)/500) & 0xf8)|((reg) & 0x7))
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#define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1<< ((reg)&0x7)))
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#define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2))
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#define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2)
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#define AUTO_TEMP_OFF_FROM_REG(reg) \
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(AUTO_TEMP_MIN_FROM_REG(reg) - 5000)
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#define AUTO_TEMP_MAX_FROM_REG(reg) \
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(AUTO_TEMP_RANGE_FROM_REG(reg) + \
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AUTO_TEMP_MIN_FROM_REG(reg))
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static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm)
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{
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int ret;
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int range = val - AUTO_TEMP_MIN_FROM_REG(reg);
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range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm);
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ret = ((reg & 0xf8) |
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(range < 10000 ? 0 :
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range < 20000 ? 1 :
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range < 40000 ? 2 : range < 80000 ? 3 : 4));
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return ret;
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}
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/* FAN auto control */
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#define GET_FAN_AUTO_BITFIELD(data, idx) \
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(*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2]
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/* The tables below contains the possible values for the auto fan
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* control bitfields. the index in the table is the register value.
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* MSb is the auto fan control enable bit, so the four first entries
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* in the table disables auto fan control when both bitfields are zero.
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*/
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static auto_chan_table_t auto_channel_select_table_adm1031 = {
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{0, 0}, {0, 0}, {0, 0}, {0, 0},
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{2 /*0b010 */ , 4 /*0b100 */ },
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{2 /*0b010 */ , 2 /*0b010 */ },
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{4 /*0b100 */ , 4 /*0b100 */ },
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{7 /*0b111 */ , 7 /*0b111 */ },
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};
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static auto_chan_table_t auto_channel_select_table_adm1030 = {
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{0, 0}, {0, 0}, {0, 0}, {0, 0},
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{2 /*0b10 */ , 0},
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{0xff /*invalid */ , 0},
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{0xff /*invalid */ , 0},
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{3 /*0b11 */ , 0},
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};
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/* That function checks if a bitfield is valid and returns the other bitfield
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* nearest match if no exact match where found.
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*/
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static int
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get_fan_auto_nearest(struct adm1031_data *data,
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int chan, u8 val, u8 reg, u8 * new_reg)
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{
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int i;
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int first_match = -1, exact_match = -1;
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u8 other_reg_val =
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(*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1];
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if (val == 0) {
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*new_reg = 0;
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return 0;
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}
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for (i = 0; i < 8; i++) {
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if ((val == (*data->chan_select_table)[i][chan]) &&
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((*data->chan_select_table)[i][chan ? 0 : 1] ==
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other_reg_val)) {
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/* We found an exact match */
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exact_match = i;
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break;
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} else if (val == (*data->chan_select_table)[i][chan] &&
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first_match == -1) {
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/* Save the first match in case of an exact match has not been
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* found
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*/
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first_match = i;
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}
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}
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if (exact_match >= 0) {
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*new_reg = exact_match;
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} else if (first_match >= 0) {
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*new_reg = first_match;
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} else {
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return -EINVAL;
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}
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return 0;
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}
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static ssize_t show_fan_auto_channel(struct device *dev, char *buf, int nr)
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{
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struct adm1031_data *data = adm1031_update_device(dev);
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return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr));
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}
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static ssize_t
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set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct adm1031_data *data = i2c_get_clientdata(client);
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int val = simple_strtol(buf, NULL, 10);
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u8 reg;
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int ret;
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u8 old_fan_mode;
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old_fan_mode = data->conf1;
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mutex_lock(&data->update_lock);
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if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, ®))) {
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mutex_unlock(&data->update_lock);
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return ret;
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}
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if (((data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1)) & ADM1031_CONF1_AUTO_MODE) ^
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(old_fan_mode & ADM1031_CONF1_AUTO_MODE)) {
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if (data->conf1 & ADM1031_CONF1_AUTO_MODE){
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/* Switch to Auto Fan Mode
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* Save PWM registers
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* Set PWM registers to 33% Both */
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data->old_pwm[0] = data->pwm[0];
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data->old_pwm[1] = data->pwm[1];
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adm1031_write_value(client, ADM1031_REG_PWM, 0x55);
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} else {
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/* Switch to Manual Mode */
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data->pwm[0] = data->old_pwm[0];
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data->pwm[1] = data->old_pwm[1];
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/* Restore PWM registers */
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adm1031_write_value(client, ADM1031_REG_PWM,
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data->pwm[0] | (data->pwm[1] << 4));
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}
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}
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data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
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adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1);
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mutex_unlock(&data->update_lock);
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return count;
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}
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#define fan_auto_channel_offset(offset) \
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static ssize_t show_fan_auto_channel_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_fan_auto_channel(dev, buf, offset - 1); \
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} \
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static ssize_t set_fan_auto_channel_##offset (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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return set_fan_auto_channel(dev, buf, count, offset - 1); \
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} \
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static DEVICE_ATTR(auto_fan##offset##_channel, S_IRUGO | S_IWUSR, \
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show_fan_auto_channel_##offset, \
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set_fan_auto_channel_##offset)
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fan_auto_channel_offset(1);
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fan_auto_channel_offset(2);
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/* Auto Temps */
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static ssize_t show_auto_temp_off(struct device *dev, char *buf, int nr)
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{
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struct adm1031_data *data = adm1031_update_device(dev);
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return sprintf(buf, "%d\n",
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AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr]));
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}
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static ssize_t show_auto_temp_min(struct device *dev, char *buf, int nr)
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{
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struct adm1031_data *data = adm1031_update_device(dev);
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return sprintf(buf, "%d\n",
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AUTO_TEMP_MIN_FROM_REG(data->auto_temp[nr]));
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}
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static ssize_t
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set_auto_temp_min(struct device *dev, const char *buf, size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct adm1031_data *data = i2c_get_clientdata(client);
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int val = simple_strtol(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]);
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adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
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data->auto_temp[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 show_auto_temp_max(struct device *dev, char *buf, int nr)
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{
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struct adm1031_data *data = adm1031_update_device(dev);
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return sprintf(buf, "%d\n",
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AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr]));
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}
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static ssize_t
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set_auto_temp_max(struct device *dev, const char *buf, size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct adm1031_data *data = i2c_get_clientdata(client);
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int val = simple_strtol(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]);
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adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
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data->temp_max[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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#define auto_temp_reg(offset) \
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static ssize_t show_auto_temp_##offset##_off (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_auto_temp_off(dev, buf, offset - 1); \
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} \
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static ssize_t show_auto_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_auto_temp_min(dev, buf, offset - 1); \
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} \
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static ssize_t show_auto_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_auto_temp_max(dev, buf, offset - 1); \
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} \
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static ssize_t set_auto_temp_##offset##_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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return set_auto_temp_min(dev, buf, count, offset - 1); \
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} \
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static ssize_t set_auto_temp_##offset##_max (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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return set_auto_temp_max(dev, buf, count, offset - 1); \
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} \
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static DEVICE_ATTR(auto_temp##offset##_off, S_IRUGO, \
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show_auto_temp_##offset##_off, NULL); \
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static DEVICE_ATTR(auto_temp##offset##_min, S_IRUGO | S_IWUSR, \
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show_auto_temp_##offset##_min, set_auto_temp_##offset##_min);\
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static DEVICE_ATTR(auto_temp##offset##_max, S_IRUGO | S_IWUSR, \
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show_auto_temp_##offset##_max, set_auto_temp_##offset##_max)
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auto_temp_reg(1);
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auto_temp_reg(2);
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auto_temp_reg(3);
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/* pwm */
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static ssize_t show_pwm(struct device *dev, char *buf, int nr)
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{
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struct adm1031_data *data = adm1031_update_device(dev);
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return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
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}
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static ssize_t
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set_pwm(struct device *dev, const char *buf, size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct adm1031_data *data = i2c_get_clientdata(client);
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int val = simple_strtol(buf, NULL, 10);
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int reg;
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mutex_lock(&data->update_lock);
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if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
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(((val>>4) & 0xf) != 5)) {
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/* In automatic mode, the only PWM accepted is 33% */
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mutex_unlock(&data->update_lock);
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return -EINVAL;
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}
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data->pwm[nr] = PWM_TO_REG(val);
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reg = adm1031_read_value(client, ADM1031_REG_PWM);
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adm1031_write_value(client, ADM1031_REG_PWM,
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nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf)
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: (data->pwm[nr] & 0xf) | (reg & 0xf0));
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mutex_unlock(&data->update_lock);
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return count;
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}
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#define pwm_reg(offset) \
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static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_pwm(dev, buf, offset - 1); \
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} \
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static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
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|
const char *buf, size_t count) \
|
|
{ \
|
|
return set_pwm(dev, buf, count, offset - 1); \
|
|
} \
|
|
static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
|
|
show_pwm_##offset, set_pwm_##offset)
|
|
|
|
pwm_reg(1);
|
|
pwm_reg(2);
|
|
|
|
/* Fans */
|
|
|
|
/*
|
|
* That function checks the cases where the fan reading is not
|
|
* relevant. It is used to provide 0 as fan reading when the fan is
|
|
* not supposed to run
|
|
*/
|
|
static int trust_fan_readings(struct adm1031_data *data, int chan)
|
|
{
|
|
int res = 0;
|
|
|
|
if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
|
|
switch (data->conf1 & 0x60) {
|
|
case 0x00: /* remote temp1 controls fan1 remote temp2 controls fan2 */
|
|
res = data->temp[chan+1] >=
|
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
|
|
break;
|
|
case 0x20: /* remote temp1 controls both fans */
|
|
res =
|
|
data->temp[1] >=
|
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]);
|
|
break;
|
|
case 0x40: /* remote temp2 controls both fans */
|
|
res =
|
|
data->temp[2] >=
|
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]);
|
|
break;
|
|
case 0x60: /* max controls both fans */
|
|
res =
|
|
data->temp[0] >=
|
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0])
|
|
|| data->temp[1] >=
|
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1])
|
|
|| (data->chip_type == adm1031
|
|
&& data->temp[2] >=
|
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]));
|
|
break;
|
|
}
|
|
} else {
|
|
res = data->pwm[chan] > 0;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
static ssize_t show_fan(struct device *dev, char *buf, int nr)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
int value;
|
|
|
|
value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr],
|
|
FAN_DIV_FROM_REG(data->fan_div[nr])) : 0;
|
|
return sprintf(buf, "%d\n", value);
|
|
}
|
|
|
|
static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr]));
|
|
}
|
|
static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
return sprintf(buf, "%d\n",
|
|
FAN_FROM_REG(data->fan_min[nr],
|
|
FAN_DIV_FROM_REG(data->fan_div[nr])));
|
|
}
|
|
static ssize_t
|
|
set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
int val = simple_strtol(buf, NULL, 10);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
if (val) {
|
|
data->fan_min[nr] =
|
|
FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr]));
|
|
} else {
|
|
data->fan_min[nr] = 0xff;
|
|
}
|
|
adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
static ssize_t
|
|
set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
int val = simple_strtol(buf, NULL, 10);
|
|
u8 tmp;
|
|
int old_div;
|
|
int new_min;
|
|
|
|
tmp = val == 8 ? 0xc0 :
|
|
val == 4 ? 0x80 :
|
|
val == 2 ? 0x40 :
|
|
val == 1 ? 0x00 :
|
|
0xff;
|
|
if (tmp == 0xff)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
|
|
data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]);
|
|
new_min = data->fan_min[nr] * old_div /
|
|
FAN_DIV_FROM_REG(data->fan_div[nr]);
|
|
data->fan_min[nr] = new_min > 0xff ? 0xff : new_min;
|
|
data->fan[nr] = data->fan[nr] * old_div /
|
|
FAN_DIV_FROM_REG(data->fan_div[nr]);
|
|
|
|
adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr),
|
|
data->fan_div[nr]);
|
|
adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr),
|
|
data->fan_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define fan_offset(offset) \
|
|
static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_fan(dev, buf, offset - 1); \
|
|
} \
|
|
static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_fan_min(dev, buf, offset - 1); \
|
|
} \
|
|
static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_fan_div(dev, buf, offset - 1); \
|
|
} \
|
|
static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
return set_fan_min(dev, buf, count, offset - 1); \
|
|
} \
|
|
static ssize_t set_fan_##offset##_div (struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
return set_fan_div(dev, buf, count, offset - 1); \
|
|
} \
|
|
static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
|
|
NULL); \
|
|
static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
|
|
show_fan_##offset##_min, set_fan_##offset##_min); \
|
|
static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
|
|
show_fan_##offset##_div, set_fan_##offset##_div); \
|
|
static DEVICE_ATTR(auto_fan##offset##_min_pwm, S_IRUGO | S_IWUSR, \
|
|
show_pwm_##offset, set_pwm_##offset)
|
|
|
|
fan_offset(1);
|
|
fan_offset(2);
|
|
|
|
|
|
/* Temps */
|
|
static ssize_t show_temp(struct device *dev, char *buf, int nr)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
int ext;
|
|
ext = nr == 0 ?
|
|
((data->ext_temp[nr] >> 6) & 0x3) * 2 :
|
|
(((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7));
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext));
|
|
}
|
|
static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
|
|
}
|
|
static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
|
|
}
|
|
static ssize_t show_temp_crit(struct device *dev, char *buf, int nr)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
|
|
}
|
|
static ssize_t
|
|
set_temp_min(struct device *dev, const char *buf, size_t count, int nr)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
int val;
|
|
|
|
val = simple_strtol(buf, NULL, 10);
|
|
val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_min[nr] = TEMP_TO_REG(val);
|
|
adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr),
|
|
data->temp_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
static ssize_t
|
|
set_temp_max(struct device *dev, const char *buf, size_t count, int nr)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
int val;
|
|
|
|
val = simple_strtol(buf, NULL, 10);
|
|
val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_max[nr] = TEMP_TO_REG(val);
|
|
adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr),
|
|
data->temp_max[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
static ssize_t
|
|
set_temp_crit(struct device *dev, const char *buf, size_t count, int nr)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
int val;
|
|
|
|
val = simple_strtol(buf, NULL, 10);
|
|
val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_crit[nr] = TEMP_TO_REG(val);
|
|
adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr),
|
|
data->temp_crit[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define temp_reg(offset) \
|
|
static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_temp(dev, buf, offset - 1); \
|
|
} \
|
|
static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_temp_min(dev, buf, offset - 1); \
|
|
} \
|
|
static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_temp_max(dev, buf, offset - 1); \
|
|
} \
|
|
static ssize_t show_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_temp_crit(dev, buf, offset - 1); \
|
|
} \
|
|
static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
return set_temp_min(dev, buf, count, offset - 1); \
|
|
} \
|
|
static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
return set_temp_max(dev, buf, count, offset - 1); \
|
|
} \
|
|
static ssize_t set_temp_##offset##_crit (struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
return set_temp_crit(dev, buf, count, offset - 1); \
|
|
} \
|
|
static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
|
|
NULL); \
|
|
static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
|
|
show_temp_##offset##_min, set_temp_##offset##_min); \
|
|
static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
|
|
show_temp_##offset##_max, set_temp_##offset##_max); \
|
|
static DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
|
|
show_temp_##offset##_crit, set_temp_##offset##_crit)
|
|
|
|
temp_reg(1);
|
|
temp_reg(2);
|
|
temp_reg(3);
|
|
|
|
/* Alarms */
|
|
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct adm1031_data *data = adm1031_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->alarm);
|
|
}
|
|
|
|
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
|
|
|
|
|
|
static int adm1031_attach_adapter(struct i2c_adapter *adapter)
|
|
{
|
|
if (!(adapter->class & I2C_CLASS_HWMON))
|
|
return 0;
|
|
return i2c_probe(adapter, &addr_data, adm1031_detect);
|
|
}
|
|
|
|
/* This function is called by i2c_probe */
|
|
static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
|
|
{
|
|
struct i2c_client *new_client;
|
|
struct adm1031_data *data;
|
|
int err = 0;
|
|
const char *name = "";
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
goto exit;
|
|
|
|
if (!(data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
new_client = &data->client;
|
|
i2c_set_clientdata(new_client, data);
|
|
new_client->addr = address;
|
|
new_client->adapter = adapter;
|
|
new_client->driver = &adm1031_driver;
|
|
new_client->flags = 0;
|
|
|
|
if (kind < 0) {
|
|
int id, co;
|
|
id = i2c_smbus_read_byte_data(new_client, 0x3d);
|
|
co = i2c_smbus_read_byte_data(new_client, 0x3e);
|
|
|
|
if (!((id == 0x31 || id == 0x30) && co == 0x41))
|
|
goto exit_free;
|
|
kind = (id == 0x30) ? adm1030 : adm1031;
|
|
}
|
|
|
|
if (kind <= 0)
|
|
kind = adm1031;
|
|
|
|
/* Given the detected chip type, set the chip name and the
|
|
* auto fan control helper table. */
|
|
if (kind == adm1030) {
|
|
name = "adm1030";
|
|
data->chan_select_table = &auto_channel_select_table_adm1030;
|
|
} else if (kind == adm1031) {
|
|
name = "adm1031";
|
|
data->chan_select_table = &auto_channel_select_table_adm1031;
|
|
}
|
|
data->chip_type = kind;
|
|
|
|
strlcpy(new_client->name, name, I2C_NAME_SIZE);
|
|
data->valid = 0;
|
|
mutex_init(&data->update_lock);
|
|
|
|
/* Tell the I2C layer a new client has arrived */
|
|
if ((err = i2c_attach_client(new_client)))
|
|
goto exit_free;
|
|
|
|
/* Initialize the ADM1031 chip */
|
|
adm1031_init_client(new_client);
|
|
|
|
/* Register sysfs hooks */
|
|
data->class_dev = hwmon_device_register(&new_client->dev);
|
|
if (IS_ERR(data->class_dev)) {
|
|
err = PTR_ERR(data->class_dev);
|
|
goto exit_detach;
|
|
}
|
|
|
|
device_create_file(&new_client->dev, &dev_attr_fan1_input);
|
|
device_create_file(&new_client->dev, &dev_attr_fan1_div);
|
|
device_create_file(&new_client->dev, &dev_attr_fan1_min);
|
|
device_create_file(&new_client->dev, &dev_attr_pwm1);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_fan1_channel);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_input);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_min);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_max);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_crit);
|
|
device_create_file(&new_client->dev, &dev_attr_temp2_input);
|
|
device_create_file(&new_client->dev, &dev_attr_temp2_min);
|
|
device_create_file(&new_client->dev, &dev_attr_temp2_max);
|
|
device_create_file(&new_client->dev, &dev_attr_temp2_crit);
|
|
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp1_off);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp1_min);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp1_max);
|
|
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp2_off);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp2_min);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp2_max);
|
|
|
|
device_create_file(&new_client->dev, &dev_attr_auto_fan1_min_pwm);
|
|
|
|
device_create_file(&new_client->dev, &dev_attr_alarms);
|
|
|
|
if (kind == adm1031) {
|
|
device_create_file(&new_client->dev, &dev_attr_fan2_input);
|
|
device_create_file(&new_client->dev, &dev_attr_fan2_div);
|
|
device_create_file(&new_client->dev, &dev_attr_fan2_min);
|
|
device_create_file(&new_client->dev, &dev_attr_pwm2);
|
|
device_create_file(&new_client->dev,
|
|
&dev_attr_auto_fan2_channel);
|
|
device_create_file(&new_client->dev, &dev_attr_temp3_input);
|
|
device_create_file(&new_client->dev, &dev_attr_temp3_min);
|
|
device_create_file(&new_client->dev, &dev_attr_temp3_max);
|
|
device_create_file(&new_client->dev, &dev_attr_temp3_crit);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp3_off);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp3_min);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_temp3_max);
|
|
device_create_file(&new_client->dev, &dev_attr_auto_fan2_min_pwm);
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit_detach:
|
|
i2c_detach_client(new_client);
|
|
exit_free:
|
|
kfree(data);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static int adm1031_detach_client(struct i2c_client *client)
|
|
{
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
int ret;
|
|
|
|
hwmon_device_unregister(data->class_dev);
|
|
if ((ret = i2c_detach_client(client)) != 0) {
|
|
return ret;
|
|
}
|
|
kfree(data);
|
|
return 0;
|
|
}
|
|
|
|
static void adm1031_init_client(struct i2c_client *client)
|
|
{
|
|
unsigned int read_val;
|
|
unsigned int mask;
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
|
|
mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE);
|
|
if (data->chip_type == adm1031) {
|
|
mask |= (ADM1031_CONF2_PWM2_ENABLE |
|
|
ADM1031_CONF2_TACH2_ENABLE);
|
|
}
|
|
/* Initialize the ADM1031 chip (enables fan speed reading ) */
|
|
read_val = adm1031_read_value(client, ADM1031_REG_CONF2);
|
|
if ((read_val | mask) != read_val) {
|
|
adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
|
|
}
|
|
|
|
read_val = adm1031_read_value(client, ADM1031_REG_CONF1);
|
|
if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) {
|
|
adm1031_write_value(client, ADM1031_REG_CONF1, read_val |
|
|
ADM1031_CONF1_MONITOR_ENABLE);
|
|
}
|
|
|
|
}
|
|
|
|
static struct adm1031_data *adm1031_update_device(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adm1031_data *data = i2c_get_clientdata(client);
|
|
int chan;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|
|
|| !data->valid) {
|
|
|
|
dev_dbg(&client->dev, "Starting adm1031 update\n");
|
|
for (chan = 0;
|
|
chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) {
|
|
u8 oldh, newh;
|
|
|
|
oldh =
|
|
adm1031_read_value(client, ADM1031_REG_TEMP(chan));
|
|
data->ext_temp[chan] =
|
|
adm1031_read_value(client, ADM1031_REG_EXT_TEMP);
|
|
newh =
|
|
adm1031_read_value(client, ADM1031_REG_TEMP(chan));
|
|
if (newh != oldh) {
|
|
data->ext_temp[chan] =
|
|
adm1031_read_value(client,
|
|
ADM1031_REG_EXT_TEMP);
|
|
#ifdef DEBUG
|
|
oldh =
|
|
adm1031_read_value(client,
|
|
ADM1031_REG_TEMP(chan));
|
|
|
|
/* oldh is actually newer */
|
|
if (newh != oldh)
|
|
dev_warn(&client->dev,
|
|
"Remote temperature may be "
|
|
"wrong.\n");
|
|
#endif
|
|
}
|
|
data->temp[chan] = newh;
|
|
|
|
data->temp_min[chan] =
|
|
adm1031_read_value(client,
|
|
ADM1031_REG_TEMP_MIN(chan));
|
|
data->temp_max[chan] =
|
|
adm1031_read_value(client,
|
|
ADM1031_REG_TEMP_MAX(chan));
|
|
data->temp_crit[chan] =
|
|
adm1031_read_value(client,
|
|
ADM1031_REG_TEMP_CRIT(chan));
|
|
data->auto_temp[chan] =
|
|
adm1031_read_value(client,
|
|
ADM1031_REG_AUTO_TEMP(chan));
|
|
|
|
}
|
|
|
|
data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1);
|
|
data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
|
|
|
|
data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
|
|
| (adm1031_read_value(client, ADM1031_REG_STATUS(1))
|
|
<< 8);
|
|
if (data->chip_type == adm1030) {
|
|
data->alarm &= 0xc0ff;
|
|
}
|
|
|
|
for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) {
|
|
data->fan_div[chan] =
|
|
adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan));
|
|
data->fan_min[chan] =
|
|
adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan));
|
|
data->fan[chan] =
|
|
adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan));
|
|
data->pwm[chan] =
|
|
0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >>
|
|
(4*chan));
|
|
}
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static int __init sensors_adm1031_init(void)
|
|
{
|
|
return i2c_add_driver(&adm1031_driver);
|
|
}
|
|
|
|
static void __exit sensors_adm1031_exit(void)
|
|
{
|
|
i2c_del_driver(&adm1031_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Alexandre d'Alton <alex@alexdalton.org>");
|
|
MODULE_DESCRIPTION("ADM1031/ADM1030 driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sensors_adm1031_init);
|
|
module_exit(sensors_adm1031_exit);
|