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![Guenter Roeck](/assets/img/avatar_default.png)
smatch complains as follows when checking lm63.c. drivers/hwmon/lm63.c:594 set_temp11() warn: '65504' 65504 can't fit into 32767 'data->temp11[nr]' drivers/hwmon/lm63.c:596 set_temp11() warn: '32768' 32768 can't fit into 32767 'data->temp11[nr]' Fix by using DIV_ROUND_CLOSEST and clamp_val to convert the values. While we are at it, modify other macros as well for consistency and to make the code easier to understand. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
1169 lines
36 KiB
C
1169 lines
36 KiB
C
/*
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* lm63.c - driver for the National Semiconductor LM63 temperature sensor
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* with integrated fan control
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* Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de>
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* Based on the lm90 driver.
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*
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* The LM63 is a sensor chip made by National Semiconductor. It measures
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* two temperatures (its own and one external one) and the speed of one
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* fan, those speed it can additionally control. Complete datasheet can be
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* obtained from National's website at:
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* http://www.national.com/pf/LM/LM63.html
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*
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* The LM63 is basically an LM86 with fan speed monitoring and control
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* capabilities added. It misses some of the LM86 features though:
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* - No low limit for local temperature.
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* - No critical limit for local temperature.
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* - Critical limit for remote temperature can be changed only once. We
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* will consider that the critical limit is read-only.
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*
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* The datasheet isn't very clear about what the tachometer reading is.
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* I had a explanation from National Semiconductor though. The two lower
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* bits of the read value have to be masked out. The value is still 16 bit
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* in width.
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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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#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-sysfs.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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#include <linux/sysfs.h>
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#include <linux/types.h>
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/*
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* Addresses to scan
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* Address is fully defined internally and cannot be changed except for
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* LM64 which has one pin dedicated to address selection.
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* LM63 and LM96163 have address 0x4c.
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* LM64 can have address 0x18 or 0x4e.
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*/
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static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END };
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/*
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* The LM63 registers
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*/
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#define LM63_REG_CONFIG1 0x03
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#define LM63_REG_CONVRATE 0x04
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#define LM63_REG_CONFIG2 0xBF
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#define LM63_REG_CONFIG_FAN 0x4A
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#define LM63_REG_TACH_COUNT_MSB 0x47
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#define LM63_REG_TACH_COUNT_LSB 0x46
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#define LM63_REG_TACH_LIMIT_MSB 0x49
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#define LM63_REG_TACH_LIMIT_LSB 0x48
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#define LM63_REG_PWM_VALUE 0x4C
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#define LM63_REG_PWM_FREQ 0x4D
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#define LM63_REG_LUT_TEMP_HYST 0x4F
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#define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr))
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#define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr))
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#define LM63_REG_LOCAL_TEMP 0x00
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#define LM63_REG_LOCAL_HIGH 0x05
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#define LM63_REG_REMOTE_TEMP_MSB 0x01
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#define LM63_REG_REMOTE_TEMP_LSB 0x10
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#define LM63_REG_REMOTE_OFFSET_MSB 0x11
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#define LM63_REG_REMOTE_OFFSET_LSB 0x12
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#define LM63_REG_REMOTE_HIGH_MSB 0x07
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#define LM63_REG_REMOTE_HIGH_LSB 0x13
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#define LM63_REG_REMOTE_LOW_MSB 0x08
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#define LM63_REG_REMOTE_LOW_LSB 0x14
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#define LM63_REG_REMOTE_TCRIT 0x19
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#define LM63_REG_REMOTE_TCRIT_HYST 0x21
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#define LM63_REG_ALERT_STATUS 0x02
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#define LM63_REG_ALERT_MASK 0x16
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#define LM63_REG_MAN_ID 0xFE
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#define LM63_REG_CHIP_ID 0xFF
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#define LM96163_REG_TRUTHERM 0x30
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#define LM96163_REG_REMOTE_TEMP_U_MSB 0x31
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#define LM96163_REG_REMOTE_TEMP_U_LSB 0x32
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#define LM96163_REG_CONFIG_ENHANCED 0x45
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#define LM63_MAX_CONVRATE 9
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#define LM63_MAX_CONVRATE_HZ 32
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#define LM96163_MAX_CONVRATE_HZ 26
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/*
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* Conversions and various macros
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* For tachometer counts, the LM63 uses 16-bit values.
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* For local temperature and high limit, remote critical limit and hysteresis
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* value, it uses signed 8-bit values with LSB = 1 degree Celsius.
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* For remote temperature, low and high limits, it uses signed 11-bit values
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* with LSB = 0.125 degree Celsius, left-justified in 16-bit registers.
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* For LM64 the actual remote diode temperature is 16 degree Celsius higher
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* than the register reading. Remote temperature setpoints have to be
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* adapted accordingly.
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*/
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#define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \
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5400000 / (reg))
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#define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \
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(5400000 / (val)) & 0xFFFC)
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#define TEMP8_FROM_REG(reg) ((reg) * 1000)
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#define TEMP8_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
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127000), 1000)
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#define TEMP8U_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, \
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255000), 1000)
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#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
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#define TEMP11_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
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127875), 125) * 32)
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#define TEMP11U_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), 0, \
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255875), 125) * 32)
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#define HYST_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \
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1000)
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#define UPDATE_INTERVAL(max, rate) \
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((1000 << (LM63_MAX_CONVRATE - (rate))) / (max))
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enum chips { lm63, lm64, lm96163 };
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/*
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* Client data (each client gets its own)
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*/
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struct lm63_data {
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struct i2c_client *client;
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struct mutex update_lock;
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const struct attribute_group *groups[5];
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char valid; /* zero until following fields are valid */
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char lut_valid; /* zero until lut fields are valid */
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unsigned long last_updated; /* in jiffies */
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unsigned long lut_last_updated; /* in jiffies */
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enum chips kind;
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int temp2_offset;
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int update_interval; /* in milliseconds */
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int max_convrate_hz;
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int lut_size; /* 8 or 12 */
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/* registers values */
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u8 config, config_fan;
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u16 fan[2]; /* 0: input
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1: low limit */
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u8 pwm1_freq;
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u8 pwm1[13]; /* 0: current output
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1-12: lookup table */
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s8 temp8[15]; /* 0: local input
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1: local high limit
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2: remote critical limit
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3-14: lookup table */
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s16 temp11[4]; /* 0: remote input
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1: remote low limit
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2: remote high limit
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3: remote offset */
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u16 temp11u; /* remote input (unsigned) */
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u8 temp2_crit_hyst;
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u8 lut_temp_hyst;
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u8 alarms;
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bool pwm_highres;
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bool lut_temp_highres;
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bool remote_unsigned; /* true if unsigned remote upper limits */
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bool trutherm;
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};
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static inline int temp8_from_reg(struct lm63_data *data, int nr)
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{
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if (data->remote_unsigned)
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return TEMP8_FROM_REG((u8)data->temp8[nr]);
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return TEMP8_FROM_REG(data->temp8[nr]);
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}
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static inline int lut_temp_from_reg(struct lm63_data *data, int nr)
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{
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return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000);
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}
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static inline int lut_temp_to_reg(struct lm63_data *data, long val)
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{
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val -= data->temp2_offset;
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if (data->lut_temp_highres)
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return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500);
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else
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return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000);
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}
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/*
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* Update the lookup table register cache.
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* client->update_lock must be held when calling this function.
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*/
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static void lm63_update_lut(struct lm63_data *data)
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{
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struct i2c_client *client = data->client;
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int i;
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if (time_after(jiffies, data->lut_last_updated + 5 * HZ) ||
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!data->lut_valid) {
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for (i = 0; i < data->lut_size; i++) {
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data->pwm1[1 + i] = i2c_smbus_read_byte_data(client,
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LM63_REG_LUT_PWM(i));
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data->temp8[3 + i] = i2c_smbus_read_byte_data(client,
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LM63_REG_LUT_TEMP(i));
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}
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data->lut_temp_hyst = i2c_smbus_read_byte_data(client,
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LM63_REG_LUT_TEMP_HYST);
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data->lut_last_updated = jiffies;
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data->lut_valid = 1;
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}
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}
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static struct lm63_data *lm63_update_device(struct device *dev)
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{
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struct lm63_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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unsigned long next_update;
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mutex_lock(&data->update_lock);
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next_update = data->last_updated +
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msecs_to_jiffies(data->update_interval);
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if (time_after(jiffies, next_update) || !data->valid) {
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if (data->config & 0x04) { /* tachometer enabled */
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/* order matters for fan1_input */
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data->fan[0] = i2c_smbus_read_byte_data(client,
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LM63_REG_TACH_COUNT_LSB) & 0xFC;
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data->fan[0] |= i2c_smbus_read_byte_data(client,
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LM63_REG_TACH_COUNT_MSB) << 8;
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data->fan[1] = (i2c_smbus_read_byte_data(client,
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LM63_REG_TACH_LIMIT_LSB) & 0xFC)
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| (i2c_smbus_read_byte_data(client,
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LM63_REG_TACH_LIMIT_MSB) << 8);
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}
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data->pwm1_freq = i2c_smbus_read_byte_data(client,
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LM63_REG_PWM_FREQ);
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if (data->pwm1_freq == 0)
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data->pwm1_freq = 1;
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data->pwm1[0] = i2c_smbus_read_byte_data(client,
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LM63_REG_PWM_VALUE);
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data->temp8[0] = i2c_smbus_read_byte_data(client,
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LM63_REG_LOCAL_TEMP);
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data->temp8[1] = i2c_smbus_read_byte_data(client,
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LM63_REG_LOCAL_HIGH);
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/* order matters for temp2_input */
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data->temp11[0] = i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_TEMP_MSB) << 8;
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data->temp11[0] |= i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_TEMP_LSB);
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data->temp11[1] = (i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_LOW_MSB) << 8)
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| i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_LOW_LSB);
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data->temp11[2] = (i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_HIGH_MSB) << 8)
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| i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_HIGH_LSB);
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data->temp11[3] = (i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_OFFSET_MSB) << 8)
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| i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_OFFSET_LSB);
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if (data->kind == lm96163)
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data->temp11u = (i2c_smbus_read_byte_data(client,
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LM96163_REG_REMOTE_TEMP_U_MSB) << 8)
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| i2c_smbus_read_byte_data(client,
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LM96163_REG_REMOTE_TEMP_U_LSB);
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data->temp8[2] = i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_TCRIT);
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data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
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LM63_REG_REMOTE_TCRIT_HYST);
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data->alarms = i2c_smbus_read_byte_data(client,
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LM63_REG_ALERT_STATUS) & 0x7F;
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data->last_updated = jiffies;
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data->valid = 1;
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}
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lm63_update_lut(data);
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mutex_unlock(&data->update_lock);
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return data;
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}
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/*
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* Trip points in the lookup table should be in ascending order for both
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* temperatures and PWM output values.
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*/
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static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data)
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{
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int i;
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mutex_lock(&data->update_lock);
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lm63_update_lut(data);
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for (i = 1; i < data->lut_size; i++) {
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if (data->pwm1[1 + i - 1] > data->pwm1[1 + i]
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|| data->temp8[3 + i - 1] > data->temp8[3 + i]) {
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dev_warn(dev,
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"Lookup table doesn't look sane (check entries %d and %d)\n",
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i, i + 1);
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break;
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}
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}
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mutex_unlock(&data->update_lock);
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return i == data->lut_size ? 0 : 1;
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}
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/*
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* Sysfs callback functions and files
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*/
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static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct lm63_data *data = lm63_update_device(dev);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index]));
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}
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static ssize_t set_fan(struct device *dev, struct device_attribute *dummy,
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const char *buf, size_t count)
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{
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struct lm63_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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data->fan[1] = FAN_TO_REG(val);
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i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB,
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data->fan[1] & 0xFF);
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i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB,
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data->fan[1] >> 8);
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mutex_unlock(&data->update_lock);
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return count;
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}
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|
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static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct lm63_data *data = lm63_update_device(dev);
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int nr = attr->index;
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int pwm;
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if (data->pwm_highres)
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pwm = data->pwm1[nr];
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else
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pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ?
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255 : (data->pwm1[nr] * 255 + data->pwm1_freq) /
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(2 * data->pwm1_freq);
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return sprintf(buf, "%d\n", pwm);
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}
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|
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static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct lm63_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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int nr = attr->index;
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unsigned long val;
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int err;
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u8 reg;
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|
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if (!(data->config_fan & 0x20)) /* register is read-only */
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return -EPERM;
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|
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
|
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|
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reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE;
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val = clamp_val(val, 0, 255);
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|
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mutex_lock(&data->update_lock);
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data->pwm1[nr] = data->pwm_highres ? val :
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(val * data->pwm1_freq * 2 + 127) / 255;
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i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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|
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static ssize_t show_pwm1_enable(struct device *dev,
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struct device_attribute *dummy, char *buf)
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{
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struct lm63_data *data = lm63_update_device(dev);
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return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
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}
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|
|
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static ssize_t set_pwm1_enable(struct device *dev,
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struct device_attribute *dummy,
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const char *buf, size_t count)
|
|
{
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struct lm63_data *data = dev_get_drvdata(dev);
|
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struct i2c_client *client = data->client;
|
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unsigned long val;
|
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int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
if (val < 1 || val > 2)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Only let the user switch to automatic mode if the lookup table
|
|
* looks sane.
|
|
*/
|
|
if (val == 2 && lm63_lut_looks_bad(dev, data))
|
|
return -EPERM;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->config_fan = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_CONFIG_FAN);
|
|
if (val == 1)
|
|
data->config_fan |= 0x20;
|
|
else
|
|
data->config_fan &= ~0x20;
|
|
i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN,
|
|
data->config_fan);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* There are 8bit registers for both local(temp1) and remote(temp2) sensor.
|
|
* For remote sensor registers temp2_offset has to be considered,
|
|
* for local sensor it must not.
|
|
* So we need separate 8bit accessors for local and remote sensor.
|
|
*/
|
|
static ssize_t show_local_temp8(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index]));
|
|
}
|
|
|
|
static ssize_t show_remote_temp8(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index)
|
|
+ data->temp2_offset);
|
|
}
|
|
|
|
static ssize_t show_lut_temp(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index)
|
|
+ data->temp2_offset);
|
|
}
|
|
|
|
static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int nr = attr->index;
|
|
long val;
|
|
int err;
|
|
int temp;
|
|
u8 reg;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
switch (nr) {
|
|
case 2:
|
|
reg = LM63_REG_REMOTE_TCRIT;
|
|
if (data->remote_unsigned)
|
|
temp = TEMP8U_TO_REG(val - data->temp2_offset);
|
|
else
|
|
temp = TEMP8_TO_REG(val - data->temp2_offset);
|
|
break;
|
|
case 1:
|
|
reg = LM63_REG_LOCAL_HIGH;
|
|
temp = TEMP8_TO_REG(val);
|
|
break;
|
|
default: /* lookup table */
|
|
reg = LM63_REG_LUT_TEMP(nr - 3);
|
|
temp = lut_temp_to_reg(data, val);
|
|
}
|
|
data->temp8[nr] = temp;
|
|
i2c_smbus_write_byte_data(client, reg, temp);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
int nr = attr->index;
|
|
int temp;
|
|
|
|
if (!nr) {
|
|
/*
|
|
* Use unsigned temperature unless its value is zero.
|
|
* If it is zero, use signed temperature.
|
|
*/
|
|
if (data->temp11u)
|
|
temp = TEMP11_FROM_REG(data->temp11u);
|
|
else
|
|
temp = TEMP11_FROM_REG(data->temp11[nr]);
|
|
} else {
|
|
if (data->remote_unsigned && nr == 2)
|
|
temp = TEMP11_FROM_REG((u16)data->temp11[nr]);
|
|
else
|
|
temp = TEMP11_FROM_REG(data->temp11[nr]);
|
|
}
|
|
return sprintf(buf, "%d\n", temp + data->temp2_offset);
|
|
}
|
|
|
|
static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
|
|
const char *buf, size_t count)
|
|
{
|
|
static const u8 reg[6] = {
|
|
LM63_REG_REMOTE_LOW_MSB,
|
|
LM63_REG_REMOTE_LOW_LSB,
|
|
LM63_REG_REMOTE_HIGH_MSB,
|
|
LM63_REG_REMOTE_HIGH_LSB,
|
|
LM63_REG_REMOTE_OFFSET_MSB,
|
|
LM63_REG_REMOTE_OFFSET_LSB,
|
|
};
|
|
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
int nr = attr->index;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
if (data->remote_unsigned && nr == 2)
|
|
data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset);
|
|
else
|
|
data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset);
|
|
|
|
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
|
|
data->temp11[nr] >> 8);
|
|
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
|
|
data->temp11[nr] & 0xff);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Hysteresis register holds a relative value, while we want to present
|
|
* an absolute to user-space
|
|
*/
|
|
static ssize_t show_temp2_crit_hyst(struct device *dev,
|
|
struct device_attribute *dummy, char *buf)
|
|
{
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", temp8_from_reg(data, 2)
|
|
+ data->temp2_offset
|
|
- TEMP8_FROM_REG(data->temp2_crit_hyst));
|
|
}
|
|
|
|
static ssize_t show_lut_temp_hyst(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index)
|
|
+ data->temp2_offset
|
|
- TEMP8_FROM_REG(data->lut_temp_hyst));
|
|
}
|
|
|
|
/*
|
|
* And now the other way around, user-space provides an absolute
|
|
* hysteresis value and we have to store a relative one
|
|
*/
|
|
static ssize_t set_temp2_crit_hyst(struct device *dev,
|
|
struct device_attribute *dummy,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
long hyst;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
hyst = temp8_from_reg(data, 2) + data->temp2_offset - val;
|
|
i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST,
|
|
HYST_TO_REG(hyst));
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Set conversion rate.
|
|
* client->update_lock must be held when calling this function.
|
|
*/
|
|
static void lm63_set_convrate(struct lm63_data *data, unsigned int interval)
|
|
{
|
|
struct i2c_client *client = data->client;
|
|
unsigned int update_interval;
|
|
int i;
|
|
|
|
/* Shift calculations to avoid rounding errors */
|
|
interval <<= 6;
|
|
|
|
/* find the nearest update rate */
|
|
update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000
|
|
/ data->max_convrate_hz;
|
|
for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1)
|
|
if (interval >= update_interval * 3 / 4)
|
|
break;
|
|
|
|
i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i);
|
|
data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i);
|
|
}
|
|
|
|
static ssize_t show_update_interval(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
|
|
return sprintf(buf, "%u\n", data->update_interval);
|
|
}
|
|
|
|
static ssize_t set_update_interval(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
lm63_set_convrate(data, clamp_val(val, 0, 100000));
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_type(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
|
|
return sprintf(buf, data->trutherm ? "1\n" : "2\n");
|
|
}
|
|
|
|
static ssize_t set_type(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
unsigned long val;
|
|
int ret;
|
|
u8 reg;
|
|
|
|
ret = kstrtoul(buf, 10, &val);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (val != 1 && val != 2)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->trutherm = val == 1;
|
|
reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02;
|
|
i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM,
|
|
reg | (data->trutherm ? 0x02 : 0x00));
|
|
data->valid = 0;
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
|
|
char *buf)
|
|
{
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%u\n", data->alarms);
|
|
}
|
|
|
|
static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
int bitnr = attr->index;
|
|
|
|
return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan,
|
|
set_fan, 1);
|
|
|
|
static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0);
|
|
static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
|
|
show_pwm1_enable, set_pwm1_enable);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 1);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 3);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 2);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 4);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 3);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 5);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 4);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 6);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 5);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 7);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 6);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 8);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 8);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 7);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 9);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 9);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 8);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 10);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 10);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 9);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 11);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 11);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 10);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 12);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 12);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 11);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 13);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 13);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm1, set_pwm1, 12);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO,
|
|
show_lut_temp, set_temp8, 14);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO,
|
|
show_lut_temp_hyst, NULL, 14);
|
|
|
|
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8,
|
|
set_temp8, 1);
|
|
|
|
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
|
|
set_temp11, 1);
|
|
static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
|
|
set_temp11, 2);
|
|
static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
|
|
set_temp11, 3);
|
|
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8,
|
|
set_temp8, 2);
|
|
static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst,
|
|
set_temp2_crit_hyst);
|
|
|
|
static DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type);
|
|
|
|
/* Individual alarm files */
|
|
static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6);
|
|
/* Raw alarm file for compatibility */
|
|
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
|
|
|
|
static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
|
|
set_update_interval);
|
|
|
|
static struct attribute *lm63_attributes[] = {
|
|
&sensor_dev_attr_pwm1.dev_attr.attr,
|
|
&dev_attr_pwm1_enable.attr,
|
|
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_offset.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit.dev_attr.attr,
|
|
&dev_attr_temp2_crit_hyst.attr,
|
|
|
|
&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
|
|
&dev_attr_alarms.attr,
|
|
&dev_attr_update_interval.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *lm63_attributes_temp2_type[] = {
|
|
&dev_attr_temp2_type.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm63_group_temp2_type = {
|
|
.attrs = lm63_attributes_temp2_type,
|
|
};
|
|
|
|
static struct attribute *lm63_attributes_extra_lut[] = {
|
|
&sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm63_group_extra_lut = {
|
|
.attrs = lm63_attributes_extra_lut,
|
|
};
|
|
|
|
/*
|
|
* On LM63, temp2_crit can be set only once, which should be job
|
|
* of the bootloader.
|
|
* On LM64, temp2_crit can always be set.
|
|
* On LM96163, temp2_crit can be set if bit 1 of the configuration
|
|
* register is true.
|
|
*/
|
|
static umode_t lm63_attribute_mode(struct kobject *kobj,
|
|
struct attribute *attr, int index)
|
|
{
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
struct lm63_data *data = dev_get_drvdata(dev);
|
|
|
|
if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr
|
|
&& (data->kind == lm64 ||
|
|
(data->kind == lm96163 && (data->config & 0x02))))
|
|
return attr->mode | S_IWUSR;
|
|
|
|
return attr->mode;
|
|
}
|
|
|
|
static const struct attribute_group lm63_group = {
|
|
.is_visible = lm63_attribute_mode,
|
|
.attrs = lm63_attributes,
|
|
};
|
|
|
|
static struct attribute *lm63_attributes_fan1[] = {
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan1_min_alarm.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm63_group_fan1 = {
|
|
.attrs = lm63_attributes_fan1,
|
|
};
|
|
|
|
/*
|
|
* Real code
|
|
*/
|
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
|
static int lm63_detect(struct i2c_client *client,
|
|
struct i2c_board_info *info)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
u8 man_id, chip_id, reg_config1, reg_config2;
|
|
u8 reg_alert_status, reg_alert_mask;
|
|
int address = client->addr;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID);
|
|
chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID);
|
|
|
|
reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
|
|
reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2);
|
|
reg_alert_status = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_ALERT_STATUS);
|
|
reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK);
|
|
|
|
if (man_id != 0x01 /* National Semiconductor */
|
|
|| (reg_config1 & 0x18) != 0x00
|
|
|| (reg_config2 & 0xF8) != 0x00
|
|
|| (reg_alert_status & 0x20) != 0x00
|
|
|| (reg_alert_mask & 0xA4) != 0xA4) {
|
|
dev_dbg(&adapter->dev,
|
|
"Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n",
|
|
man_id, chip_id);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (chip_id == 0x41 && address == 0x4c)
|
|
strlcpy(info->type, "lm63", I2C_NAME_SIZE);
|
|
else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e))
|
|
strlcpy(info->type, "lm64", I2C_NAME_SIZE);
|
|
else if (chip_id == 0x49 && address == 0x4c)
|
|
strlcpy(info->type, "lm96163", I2C_NAME_SIZE);
|
|
else
|
|
return -ENODEV;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Ideally we shouldn't have to initialize anything, since the BIOS
|
|
* should have taken care of everything
|
|
*/
|
|
static void lm63_init_client(struct lm63_data *data)
|
|
{
|
|
struct i2c_client *client = data->client;
|
|
struct device *dev = &client->dev;
|
|
u8 convrate;
|
|
|
|
data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
|
|
data->config_fan = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_CONFIG_FAN);
|
|
|
|
/* Start converting if needed */
|
|
if (data->config & 0x40) { /* standby */
|
|
dev_dbg(dev, "Switching to operational mode\n");
|
|
data->config &= 0xA7;
|
|
i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1,
|
|
data->config);
|
|
}
|
|
/* Tachometer is always enabled on LM64 */
|
|
if (data->kind == lm64)
|
|
data->config |= 0x04;
|
|
|
|
/* We may need pwm1_freq before ever updating the client data */
|
|
data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ);
|
|
if (data->pwm1_freq == 0)
|
|
data->pwm1_freq = 1;
|
|
|
|
switch (data->kind) {
|
|
case lm63:
|
|
case lm64:
|
|
data->max_convrate_hz = LM63_MAX_CONVRATE_HZ;
|
|
data->lut_size = 8;
|
|
break;
|
|
case lm96163:
|
|
data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ;
|
|
data->lut_size = 12;
|
|
data->trutherm
|
|
= i2c_smbus_read_byte_data(client,
|
|
LM96163_REG_TRUTHERM) & 0x02;
|
|
break;
|
|
}
|
|
convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE);
|
|
if (unlikely(convrate > LM63_MAX_CONVRATE))
|
|
convrate = LM63_MAX_CONVRATE;
|
|
data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz,
|
|
convrate);
|
|
|
|
/*
|
|
* For LM96163, check if high resolution PWM
|
|
* and unsigned temperature format is enabled.
|
|
*/
|
|
if (data->kind == lm96163) {
|
|
u8 config_enhanced
|
|
= i2c_smbus_read_byte_data(client,
|
|
LM96163_REG_CONFIG_ENHANCED);
|
|
if (config_enhanced & 0x20)
|
|
data->lut_temp_highres = true;
|
|
if ((config_enhanced & 0x10)
|
|
&& !(data->config_fan & 0x08) && data->pwm1_freq == 8)
|
|
data->pwm_highres = true;
|
|
if (config_enhanced & 0x08)
|
|
data->remote_unsigned = true;
|
|
}
|
|
|
|
/* Show some debug info about the LM63 configuration */
|
|
if (data->kind == lm63)
|
|
dev_dbg(dev, "Alert/tach pin configured for %s\n",
|
|
(data->config & 0x04) ? "tachometer input" :
|
|
"alert output");
|
|
dev_dbg(dev, "PWM clock %s kHz, output frequency %u Hz\n",
|
|
(data->config_fan & 0x08) ? "1.4" : "360",
|
|
((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq);
|
|
dev_dbg(dev, "PWM output active %s, %s mode\n",
|
|
(data->config_fan & 0x10) ? "low" : "high",
|
|
(data->config_fan & 0x20) ? "manual" : "auto");
|
|
}
|
|
|
|
static int lm63_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct device *hwmon_dev;
|
|
struct lm63_data *data;
|
|
int groups = 0;
|
|
|
|
data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->client = client;
|
|
mutex_init(&data->update_lock);
|
|
|
|
/* Set the device type */
|
|
data->kind = id->driver_data;
|
|
if (data->kind == lm64)
|
|
data->temp2_offset = 16000;
|
|
|
|
/* Initialize chip */
|
|
lm63_init_client(data);
|
|
|
|
/* Register sysfs hooks */
|
|
data->groups[groups++] = &lm63_group;
|
|
if (data->config & 0x04) /* tachometer enabled */
|
|
data->groups[groups++] = &lm63_group_fan1;
|
|
|
|
if (data->kind == lm96163) {
|
|
data->groups[groups++] = &lm63_group_temp2_type;
|
|
data->groups[groups++] = &lm63_group_extra_lut;
|
|
}
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
|
|
data, data->groups);
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
/*
|
|
* Driver data (common to all clients)
|
|
*/
|
|
|
|
static const struct i2c_device_id lm63_id[] = {
|
|
{ "lm63", lm63 },
|
|
{ "lm64", lm64 },
|
|
{ "lm96163", lm96163 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, lm63_id);
|
|
|
|
static struct i2c_driver lm63_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = "lm63",
|
|
},
|
|
.probe = lm63_probe,
|
|
.id_table = lm63_id,
|
|
.detect = lm63_detect,
|
|
.address_list = normal_i2c,
|
|
};
|
|
|
|
module_i2c_driver(lm63_driver);
|
|
|
|
MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
|
|
MODULE_DESCRIPTION("LM63 driver");
|
|
MODULE_LICENSE("GPL");
|