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36 KiB
1177 lines
36 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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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 <[email protected]> |
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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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|
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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/of_device.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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/* |
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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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|
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static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; |
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|
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/* |
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* The LM63 registers |
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*/ |
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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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|
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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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|
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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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|
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#define LM63_REG_LOCAL_TEMP 0x00 |
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#define LM63_REG_LOCAL_HIGH 0x05 |
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|
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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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|
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#define LM63_REG_ALERT_STATUS 0x02 |
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#define LM63_REG_ALERT_MASK 0x16 |
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|
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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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|
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#define LM63_MAX_CONVRATE 9 |
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|
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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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/* |
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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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|
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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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|
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enum chips { lm63, lm64, lm96163 }; |
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|
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/* |
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* Client data (each client gets its own) |
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*/ |
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struct 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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|
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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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|
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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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|
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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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|
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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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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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|
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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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|
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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 pwm1_enable_show(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 pwm1_enable_store(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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{ |
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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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|
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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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if (val < 1 || val > 2) |
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return -EINVAL; |
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|
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/* |
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* Only let the user switch to automatic mode if the lookup table |
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* looks sane. |
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*/ |
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if (val == 2 && lm63_lut_looks_bad(dev, data)) |
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return -EPERM; |
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|
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mutex_lock(&data->update_lock); |
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data->config_fan = i2c_smbus_read_byte_data(client, |
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LM63_REG_CONFIG_FAN); |
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if (val == 1) |
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data->config_fan |= 0x20; |
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else |
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data->config_fan &= ~0x20; |
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i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN, |
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data->config_fan); |
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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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/* |
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* There are 8bit registers for both local(temp1) and remote(temp2) sensor. |
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* For remote sensor registers temp2_offset has to be considered, |
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* for local sensor it must not. |
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* So we need separate 8bit accessors for local and remote sensor. |
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*/ |
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static ssize_t show_local_temp8(struct device *dev, |
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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", TEMP8_FROM_REG(data->temp8[attr->index])); |
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} |
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|
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static ssize_t show_remote_temp8(struct device *dev, |
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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", temp8_from_reg(data, attr->index) |
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+ data->temp2_offset); |
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} |
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|
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static ssize_t show_lut_temp(struct device *dev, |
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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", lut_temp_from_reg(data, attr->index) |
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+ data->temp2_offset); |
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} |
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|
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static ssize_t set_temp8(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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long val; |
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int err; |
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int temp; |
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u8 reg; |
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|
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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 temp2_crit_hyst_show(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 temp2_crit_hyst_store(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 update_interval_show(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 update_interval_store(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 temp2_type_show(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 temp2_type_store(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 alarms_show(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_RW(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_RW(temp2_crit_hyst); |
|
|
|
static DEVICE_ATTR_RW(temp2_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_RO(alarms); |
|
|
|
static DEVICE_ATTR_RW(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 = kobj_to_dev(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 const struct i2c_device_id lm63_id[]; |
|
|
|
static int lm63_probe(struct i2c_client *client) |
|
{ |
|
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 */ |
|
if (client->dev.of_node) |
|
data->kind = (enum chips)of_device_get_match_data(&client->dev); |
|
else |
|
data->kind = i2c_match_id(lm63_id, client)->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 const struct of_device_id __maybe_unused lm63_of_match[] = { |
|
{ |
|
.compatible = "national,lm63", |
|
.data = (void *)lm63 |
|
}, |
|
{ |
|
.compatible = "national,lm64", |
|
.data = (void *)lm64 |
|
}, |
|
{ |
|
.compatible = "national,lm96163", |
|
.data = (void *)lm96163 |
|
}, |
|
{ }, |
|
}; |
|
MODULE_DEVICE_TABLE(of, lm63_of_match); |
|
|
|
static struct i2c_driver lm63_driver = { |
|
.class = I2C_CLASS_HWMON, |
|
.driver = { |
|
.name = "lm63", |
|
.of_match_table = of_match_ptr(lm63_of_match), |
|
}, |
|
.probe_new = lm63_probe, |
|
.id_table = lm63_id, |
|
.detect = lm63_detect, |
|
.address_list = normal_i2c, |
|
}; |
|
|
|
module_i2c_driver(lm63_driver); |
|
|
|
MODULE_AUTHOR("Jean Delvare <[email protected]>"); |
|
MODULE_DESCRIPTION("LM63 driver"); |
|
MODULE_LICENSE("GPL");
|
|
|