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| -rw-r--r-- | drivers/hwmon/lm93.c | 2649 |
1 files changed, 2649 insertions, 0 deletions
diff --git a/drivers/hwmon/lm93.c b/drivers/hwmon/lm93.c new file mode 100644 index 000000000..4cf50d5f4 --- /dev/null +++ b/drivers/hwmon/lm93.c @@ -0,0 +1,2649 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * lm93.c - Part of lm_sensors, Linux kernel modules for hardware monitoring + * + * Author/Maintainer: Mark M. Hoffman <mhoffman@lightlink.com> + * Copyright (c) 2004 Utilitek Systems, Inc. + * + * derived in part from lm78.c: + * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> + * + * derived in part from lm85.c: + * Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com> + * Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de> + * + * derived in part from w83l785ts.c: + * Copyright (c) 2003-2004 Jean Delvare <jdelvare@suse.de> + * + * Ported to Linux 2.6 by Eric J. Bowersox <ericb@aspsys.com> + * Copyright (c) 2005 Aspen Systems, Inc. + * + * Adapted to 2.6.20 by Carsten Emde <cbe@osadl.org> + * Copyright (c) 2006 Carsten Emde, Open Source Automation Development Lab + * + * Modified for mainline integration by Hans J. Koch <hjk@hansjkoch.de> + * Copyright (c) 2007 Hans J. Koch, Linutronix GmbH + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/hwmon-vid.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/jiffies.h> + +/* LM93 REGISTER ADDRESSES */ + +/* miscellaneous */ +#define LM93_REG_MFR_ID 0x3e +#define LM93_REG_VER 0x3f +#define LM93_REG_STATUS_CONTROL 0xe2 +#define LM93_REG_CONFIG 0xe3 +#define LM93_REG_SLEEP_CONTROL 0xe4 + +/* alarm values start here */ +#define LM93_REG_HOST_ERROR_1 0x48 + +/* voltage inputs: in1-in16 (nr => 0-15) */ +#define LM93_REG_IN(nr) (0x56 + (nr)) +#define LM93_REG_IN_MIN(nr) (0x90 + (nr) * 2) +#define LM93_REG_IN_MAX(nr) (0x91 + (nr) * 2) + +/* temperature inputs: temp1-temp4 (nr => 0-3) */ +#define LM93_REG_TEMP(nr) (0x50 + (nr)) +#define LM93_REG_TEMP_MIN(nr) (0x78 + (nr) * 2) +#define LM93_REG_TEMP_MAX(nr) (0x79 + (nr) * 2) + +/* temp[1-4]_auto_boost (nr => 0-3) */ +#define LM93_REG_BOOST(nr) (0x80 + (nr)) + +/* #PROCHOT inputs: prochot1-prochot2 (nr => 0-1) */ +#define LM93_REG_PROCHOT_CUR(nr) (0x67 + (nr) * 2) +#define LM93_REG_PROCHOT_AVG(nr) (0x68 + (nr) * 2) +#define LM93_REG_PROCHOT_MAX(nr) (0xb0 + (nr)) + +/* fan tach inputs: fan1-fan4 (nr => 0-3) */ +#define LM93_REG_FAN(nr) (0x6e + (nr) * 2) +#define LM93_REG_FAN_MIN(nr) (0xb4 + (nr) * 2) + +/* pwm outputs: pwm1-pwm2 (nr => 0-1, reg => 0-3) */ +#define LM93_REG_PWM_CTL(nr, reg) (0xc8 + (reg) + (nr) * 4) +#define LM93_PWM_CTL1 0x0 +#define LM93_PWM_CTL2 0x1 +#define LM93_PWM_CTL3 0x2 +#define LM93_PWM_CTL4 0x3 + +/* GPIO input state */ +#define LM93_REG_GPI 0x6b + +/* vid inputs: vid1-vid2 (nr => 0-1) */ +#define LM93_REG_VID(nr) (0x6c + (nr)) + +/* vccp1 & vccp2: VID relative inputs (nr => 0-1) */ +#define LM93_REG_VCCP_LIMIT_OFF(nr) (0xb2 + (nr)) + +/* temp[1-4]_auto_boost_hyst */ +#define LM93_REG_BOOST_HYST_12 0xc0 +#define LM93_REG_BOOST_HYST_34 0xc1 +#define LM93_REG_BOOST_HYST(nr) (0xc0 + (nr)/2) + +/* temp[1-4]_auto_pwm_[min|hyst] */ +#define LM93_REG_PWM_MIN_HYST_12 0xc3 +#define LM93_REG_PWM_MIN_HYST_34 0xc4 +#define LM93_REG_PWM_MIN_HYST(nr) (0xc3 + (nr)/2) + +/* prochot_override & prochot_interval */ +#define LM93_REG_PROCHOT_OVERRIDE 0xc6 +#define LM93_REG_PROCHOT_INTERVAL 0xc7 + +/* temp[1-4]_auto_base (nr => 0-3) */ +#define LM93_REG_TEMP_BASE(nr) (0xd0 + (nr)) + +/* temp[1-4]_auto_offsets (step => 0-11) */ +#define LM93_REG_TEMP_OFFSET(step) (0xd4 + (step)) + +/* #PROCHOT & #VRDHOT PWM ramp control */ +#define LM93_REG_PWM_RAMP_CTL 0xbf + +/* miscellaneous */ +#define LM93_REG_SFC1 0xbc +#define LM93_REG_SFC2 0xbd +#define LM93_REG_GPI_VID_CTL 0xbe +#define LM93_REG_SF_TACH_TO_PWM 0xe0 + +/* error masks */ +#define LM93_REG_GPI_ERR_MASK 0xec +#define LM93_REG_MISC_ERR_MASK 0xed + +/* LM93 REGISTER VALUES */ +#define LM93_MFR_ID 0x73 +#define LM93_MFR_ID_PROTOTYPE 0x72 + +/* LM94 REGISTER VALUES */ +#define LM94_MFR_ID_2 0x7a +#define LM94_MFR_ID 0x79 +#define LM94_MFR_ID_PROTOTYPE 0x78 + +/* SMBus capabilities */ +#define LM93_SMBUS_FUNC_FULL (I2C_FUNC_SMBUS_BYTE_DATA | \ + I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA) +#define LM93_SMBUS_FUNC_MIN (I2C_FUNC_SMBUS_BYTE_DATA | \ + I2C_FUNC_SMBUS_WORD_DATA) + +/* Addresses to scan */ +static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; + +/* Insmod parameters */ + +static bool disable_block; +module_param(disable_block, bool, 0); +MODULE_PARM_DESC(disable_block, + "Set to non-zero to disable SMBus block data transactions."); + +static bool init; +module_param(init, bool, 0); +MODULE_PARM_DESC(init, "Set to non-zero to force chip initialization."); + +static int vccp_limit_type[2] = {0, 0}; +module_param_array(vccp_limit_type, int, NULL, 0); +MODULE_PARM_DESC(vccp_limit_type, "Configures in7 and in8 limit modes."); + +static int vid_agtl; +module_param(vid_agtl, int, 0); +MODULE_PARM_DESC(vid_agtl, "Configures VID pin input thresholds."); + +/* Driver data */ +static struct i2c_driver lm93_driver; + +/* LM93 BLOCK READ COMMANDS */ +static const struct { u8 cmd; u8 len; } lm93_block_read_cmds[12] = { + { 0xf2, 8 }, + { 0xf3, 8 }, + { 0xf4, 6 }, + { 0xf5, 16 }, + { 0xf6, 4 }, + { 0xf7, 8 }, + { 0xf8, 12 }, + { 0xf9, 32 }, + { 0xfa, 8 }, + { 0xfb, 8 }, + { 0xfc, 16 }, + { 0xfd, 9 }, +}; + +/* + * ALARMS: SYSCTL format described further below + * REG: 64 bits in 8 registers, as immediately below + */ +struct block1_t { + u8 host_status_1; + u8 host_status_2; + u8 host_status_3; + u8 host_status_4; + u8 p1_prochot_status; + u8 p2_prochot_status; + u8 gpi_status; + u8 fan_status; +}; + +/* + * Client-specific data + */ +struct lm93_data { + struct i2c_client *client; + + struct mutex update_lock; + unsigned long last_updated; /* In jiffies */ + + /* client update function */ + void (*update)(struct lm93_data *, struct i2c_client *); + + bool valid; /* true if following fields are valid */ + + /* register values, arranged by block read groups */ + struct block1_t block1; + + /* + * temp1 - temp4: unfiltered readings + * temp1 - temp2: filtered readings + */ + u8 block2[6]; + + /* vin1 - vin16: readings */ + u8 block3[16]; + + /* prochot1 - prochot2: readings */ + struct { + u8 cur; + u8 avg; + } block4[2]; + + /* fan counts 1-4 => 14-bits, LE, *left* justified */ + u16 block5[4]; + + /* block6 has a lot of data we don't need */ + struct { + u8 min; + u8 max; + } temp_lim[4]; + + /* vin1 - vin16: low and high limits */ + struct { + u8 min; + u8 max; + } block7[16]; + + /* fan count limits 1-4 => same format as block5 */ + u16 block8[4]; + + /* pwm control registers (2 pwms, 4 regs) */ + u8 block9[2][4]; + + /* auto/pwm base temp and offset temp registers */ + struct { + u8 base[4]; + u8 offset[12]; + } block10; + + /* master config register */ + u8 config; + + /* VID1 & VID2 => register format, 6-bits, right justified */ + u8 vid[2]; + + /* prochot1 - prochot2: limits */ + u8 prochot_max[2]; + + /* vccp1 & vccp2 (in7 & in8): VID relative limits (register format) */ + u8 vccp_limits[2]; + + /* GPIO input state (register format, i.e. inverted) */ + u8 gpi; + + /* #PROCHOT override (register format) */ + u8 prochot_override; + + /* #PROCHOT intervals (register format) */ + u8 prochot_interval; + + /* Fan Boost Temperatures (register format) */ + u8 boost[4]; + + /* Fan Boost Hysteresis (register format) */ + u8 boost_hyst[2]; + + /* Temperature Zone Min. PWM & Hysteresis (register format) */ + u8 auto_pwm_min_hyst[2]; + + /* #PROCHOT & #VRDHOT PWM Ramp Control */ + u8 pwm_ramp_ctl; + + /* miscellaneous setup regs */ + u8 sfc1; + u8 sfc2; + u8 sf_tach_to_pwm; + + /* + * The two PWM CTL2 registers can read something other than what was + * last written for the OVR_DC field (duty cycle override). So, we + * save the user-commanded value here. + */ + u8 pwm_override[2]; +}; + +/* + * VID: mV + * REG: 6-bits, right justified, *always* using Intel VRM/VRD 10 + */ +static int LM93_VID_FROM_REG(u8 reg) +{ + return vid_from_reg((reg & 0x3f), 100); +} + +/* min, max, and nominal register values, per channel (u8) */ +static const u8 lm93_vin_reg_min[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xae, +}; +static const u8 lm93_vin_reg_max[16] = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xd1, +}; +/* + * Values from the datasheet. They're here for documentation only. + * static const u8 lm93_vin_reg_nom[16] = { + * 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, + * 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x40, 0xc0, + * }; + */ + +/* min, max, and nominal voltage readings, per channel (mV)*/ +static const unsigned long lm93_vin_val_min[16] = { + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 3000, +}; + +static const unsigned long lm93_vin_val_max[16] = { + 1236, 1236, 1236, 1600, 2000, 2000, 1600, 1600, + 4400, 6500, 3333, 2625, 1312, 1312, 1236, 3600, +}; +/* + * Values from the datasheet. They're here for documentation only. + * static const unsigned long lm93_vin_val_nom[16] = { + * 927, 927, 927, 1200, 1500, 1500, 1200, 1200, + * 3300, 5000, 2500, 1969, 984, 984, 309, 3300, + * }; + */ + +static unsigned LM93_IN_FROM_REG(int nr, u8 reg) +{ + const long uv_max = lm93_vin_val_max[nr] * 1000; + const long uv_min = lm93_vin_val_min[nr] * 1000; + + const long slope = (uv_max - uv_min) / + (lm93_vin_reg_max[nr] - lm93_vin_reg_min[nr]); + const long intercept = uv_min - slope * lm93_vin_reg_min[nr]; + + return (slope * reg + intercept + 500) / 1000; +} + +/* + * IN: mV, limits determined by channel nr + * REG: scaling determined by channel nr + */ +static u8 LM93_IN_TO_REG(int nr, unsigned val) +{ + /* range limit */ + const long mv = clamp_val(val, + lm93_vin_val_min[nr], lm93_vin_val_max[nr]); + + /* try not to lose too much precision here */ + const long uv = mv * 1000; + const long uv_max = lm93_vin_val_max[nr] * 1000; + const long uv_min = lm93_vin_val_min[nr] * 1000; + + /* convert */ + const long slope = (uv_max - uv_min) / + (lm93_vin_reg_max[nr] - lm93_vin_reg_min[nr]); + const long intercept = uv_min - slope * lm93_vin_reg_min[nr]; + + u8 result = ((uv - intercept + (slope/2)) / slope); + result = clamp_val(result, + lm93_vin_reg_min[nr], lm93_vin_reg_max[nr]); + return result; +} + +/* vid in mV, upper == 0 indicates low limit, otherwise upper limit */ +static unsigned LM93_IN_REL_FROM_REG(u8 reg, int upper, int vid) +{ + const long uv_offset = upper ? (((reg >> 4 & 0x0f) + 1) * 12500) : + (((reg >> 0 & 0x0f) + 1) * -25000); + const long uv_vid = vid * 1000; + return (uv_vid + uv_offset + 5000) / 10000; +} + +#define LM93_IN_MIN_FROM_REG(reg, vid) LM93_IN_REL_FROM_REG((reg), 0, (vid)) +#define LM93_IN_MAX_FROM_REG(reg, vid) LM93_IN_REL_FROM_REG((reg), 1, (vid)) + +/* + * vid in mV , upper == 0 indicates low limit, otherwise upper limit + * upper also determines which nibble of the register is returned + * (the other nibble will be 0x0) + */ +static u8 LM93_IN_REL_TO_REG(unsigned val, int upper, int vid) +{ + long uv_offset = vid * 1000 - val * 10000; + if (upper) { + uv_offset = clamp_val(uv_offset, 12500, 200000); + return (u8)((uv_offset / 12500 - 1) << 4); + } else { + uv_offset = clamp_val(uv_offset, -400000, -25000); + return (u8)((uv_offset / -25000 - 1) << 0); + } +} + +/* + * TEMP: 1/1000 degrees C (-128C to +127C) + * REG: 1C/bit, two's complement + */ +static int LM93_TEMP_FROM_REG(u8 reg) +{ + return (s8)reg * 1000; +} + +#define LM93_TEMP_MIN (-128000) +#define LM93_TEMP_MAX (127000) + +/* + * TEMP: 1/1000 degrees C (-128C to +127C) + * REG: 1C/bit, two's complement + */ +static u8 LM93_TEMP_TO_REG(long temp) +{ + int ntemp = clamp_val(temp, LM93_TEMP_MIN, LM93_TEMP_MAX); + ntemp += (ntemp < 0 ? -500 : 500); + return (u8)(ntemp / 1000); +} + +/* Determine 4-bit temperature offset resolution */ +static int LM93_TEMP_OFFSET_MODE_FROM_REG(u8 sfc2, int nr) +{ + /* mode: 0 => 1C/bit, nonzero => 0.5C/bit */ + return sfc2 & (nr < 2 ? 0x10 : 0x20); +} + +/* + * This function is common to all 4-bit temperature offsets + * reg is 4 bits right justified + * mode 0 => 1C/bit, mode !0 => 0.5C/bit + */ +static int LM93_TEMP_OFFSET_FROM_REG(u8 reg, int mode) +{ + return (reg & 0x0f) * (mode ? 5 : 10); +} + +#define LM93_TEMP_OFFSET_MIN (0) +#define LM93_TEMP_OFFSET_MAX0 (150) +#define LM93_TEMP_OFFSET_MAX1 (75) + +/* + * This function is common to all 4-bit temperature offsets + * returns 4 bits right justified + * mode 0 => 1C/bit, mode !0 => 0.5C/bit + */ +static u8 LM93_TEMP_OFFSET_TO_REG(int off, int mode) +{ + int factor = mode ? 5 : 10; + + off = clamp_val(off, LM93_TEMP_OFFSET_MIN, + mode ? LM93_TEMP_OFFSET_MAX1 : LM93_TEMP_OFFSET_MAX0); + return (u8)((off + factor/2) / factor); +} + +/* 0 <= nr <= 3 */ +static int LM93_TEMP_AUTO_OFFSET_FROM_REG(u8 reg, int nr, int mode) +{ + /* temp1-temp2 (nr=0,1) use lower nibble */ + if (nr < 2) + return LM93_TEMP_OFFSET_FROM_REG(reg & 0x0f, mode); + + /* temp3-temp4 (nr=2,3) use upper nibble */ + else + return LM93_TEMP_OFFSET_FROM_REG(reg >> 4 & 0x0f, mode); +} + +/* + * TEMP: 1/10 degrees C (0C to +15C (mode 0) or +7.5C (mode non-zero)) + * REG: 1.0C/bit (mode 0) or 0.5C/bit (mode non-zero) + * 0 <= nr <= 3 + */ +static u8 LM93_TEMP_AUTO_OFFSET_TO_REG(u8 old, int off, int nr, int mode) +{ + u8 new = LM93_TEMP_OFFSET_TO_REG(off, mode); + + /* temp1-temp2 (nr=0,1) use lower nibble */ + if (nr < 2) + return (old & 0xf0) | (new & 0x0f); + + /* temp3-temp4 (nr=2,3) use upper nibble */ + else + return (new << 4 & 0xf0) | (old & 0x0f); +} + +static int LM93_AUTO_BOOST_HYST_FROM_REGS(struct lm93_data *data, int nr, + int mode) +{ + u8 reg; + + switch (nr) { + case 0: + reg = data->boost_hyst[0] & 0x0f; + break; + case 1: + reg = data->boost_hyst[0] >> 4 & 0x0f; + break; + case 2: + reg = data->boost_hyst[1] & 0x0f; + break; + case 3: + default: + reg = data->boost_hyst[1] >> 4 & 0x0f; + break; + } + + return LM93_TEMP_FROM_REG(data->boost[nr]) - + LM93_TEMP_OFFSET_FROM_REG(reg, mode); +} + +static u8 LM93_AUTO_BOOST_HYST_TO_REG(struct lm93_data *data, long hyst, + int nr, int mode) +{ + u8 reg = LM93_TEMP_OFFSET_TO_REG( + (LM93_TEMP_FROM_REG(data->boost[nr]) - hyst), mode); + + switch (nr) { + case 0: + reg = (data->boost_hyst[0] & 0xf0) | (reg & 0x0f); + break; + case 1: + reg = (reg << 4 & 0xf0) | (data->boost_hyst[0] & 0x0f); + break; + case 2: + reg = (data->boost_hyst[1] & 0xf0) | (reg & 0x0f); + break; + case 3: + default: + reg = (reg << 4 & 0xf0) | (data->boost_hyst[1] & 0x0f); + break; + } + + return reg; +} + +/* + * PWM: 0-255 per sensors documentation + * REG: 0-13 as mapped below... right justified + */ +enum pwm_freq { LM93_PWM_MAP_HI_FREQ, LM93_PWM_MAP_LO_FREQ }; + +static int lm93_pwm_map[2][16] = { + { + 0x00, /* 0.00% */ 0x40, /* 25.00% */ + 0x50, /* 31.25% */ 0x60, /* 37.50% */ + 0x70, /* 43.75% */ 0x80, /* 50.00% */ + 0x90, /* 56.25% */ 0xa0, /* 62.50% */ + 0xb0, /* 68.75% */ 0xc0, /* 75.00% */ + 0xd0, /* 81.25% */ 0xe0, /* 87.50% */ + 0xf0, /* 93.75% */ 0xff, /* 100.00% */ + 0xff, 0xff, /* 14, 15 are reserved and should never occur */ + }, + { + 0x00, /* 0.00% */ 0x40, /* 25.00% */ + 0x49, /* 28.57% */ 0x52, /* 32.14% */ + 0x5b, /* 35.71% */ 0x64, /* 39.29% */ + 0x6d, /* 42.86% */ 0x76, /* 46.43% */ + 0x80, /* 50.00% */ 0x89, /* 53.57% */ + 0x92, /* 57.14% */ 0xb6, /* 71.43% */ + 0xdb, /* 85.71% */ 0xff, /* 100.00% */ + 0xff, 0xff, /* 14, 15 are reserved and should never occur */ + }, +}; + +static int LM93_PWM_FROM_REG(u8 reg, enum pwm_freq freq) +{ + return lm93_pwm_map[freq][reg & 0x0f]; +} + +/* round up to nearest match */ +static u8 LM93_PWM_TO_REG(int pwm, enum pwm_freq freq) +{ + int i; + for (i = 0; i < 13; i++) + if (pwm <= lm93_pwm_map[freq][i]) + break; + + /* can fall through with i==13 */ + return (u8)i; +} + +static int LM93_FAN_FROM_REG(u16 regs) +{ + const u16 count = le16_to_cpu(regs) >> 2; + return count == 0 ? -1 : count == 0x3fff ? 0 : 1350000 / count; +} + +/* + * RPM: (82.5 to 1350000) + * REG: 14-bits, LE, *left* justified + */ +static u16 LM93_FAN_TO_REG(long rpm) +{ + u16 count, regs; + + if (rpm == 0) { + count = 0x3fff; + } else { + rpm = clamp_val(rpm, 1, 1000000); + count = clamp_val((1350000 + rpm) / rpm, 1, 0x3ffe); + } + + regs = count << 2; + return cpu_to_le16(regs); +} + +/* + * PWM FREQ: HZ + * REG: 0-7 as mapped below + */ +static int lm93_pwm_freq_map[8] = { + 22500, 96, 84, 72, 60, 48, 36, 12 +}; + +static int LM93_PWM_FREQ_FROM_REG(u8 reg) +{ + return lm93_pwm_freq_map[reg & 0x07]; +} + +/* round up to nearest match */ +static u8 LM93_PWM_FREQ_TO_REG(int freq) +{ + int i; + for (i = 7; i > 0; i--) + if (freq <= lm93_pwm_freq_map[i]) + break; + + /* can fall through with i==0 */ + return (u8)i; +} + +/* + * TIME: 1/100 seconds + * REG: 0-7 as mapped below + */ +static int lm93_spinup_time_map[8] = { + 0, 10, 25, 40, 70, 100, 200, 400, +}; + +static int LM93_SPINUP_TIME_FROM_REG(u8 reg) +{ + return lm93_spinup_time_map[reg >> 5 & 0x07]; +} + +/* round up to nearest match */ +static u8 LM93_SPINUP_TIME_TO_REG(int time) +{ + int i; + for (i = 0; i < 7; i++) + if (time <= lm93_spinup_time_map[i]) + break; + + /* can fall through with i==8 */ + return (u8)i; +} + +#define LM93_RAMP_MIN 0 +#define LM93_RAMP_MAX 75 + +static int LM93_RAMP_FROM_REG(u8 reg) +{ + return (reg & 0x0f) * 5; +} + +/* + * RAMP: 1/100 seconds + * REG: 50mS/bit 4-bits right justified + */ +static u8 LM93_RAMP_TO_REG(int ramp) +{ + ramp = clamp_val(ramp, LM93_RAMP_MIN, LM93_RAMP_MAX); + return (u8)((ramp + 2) / 5); +} + +/* + * PROCHOT: 0-255, 0 => 0%, 255 => > 96.6% + * REG: (same) + */ +static u8 LM93_PROCHOT_TO_REG(long prochot) +{ + prochot = clamp_val(prochot, 0, 255); + return (u8)prochot; +} + +/* + * PROCHOT-INTERVAL: 73 - 37200 (1/100 seconds) + * REG: 0-9 as mapped below + */ +static int lm93_interval_map[10] = { + 73, 146, 290, 580, 1170, 2330, 4660, 9320, 18600, 37200, +}; + +static int LM93_INTERVAL_FROM_REG(u8 reg) +{ + return lm93_interval_map[reg & 0x0f]; +} + +/* round up to nearest match */ +static u8 LM93_INTERVAL_TO_REG(long interval) +{ + int i; + for (i = 0; i < 9; i++) + if (interval <= lm93_interval_map[i]) + break; + + /* can fall through with i==9 */ + return (u8)i; +} + +/* + * GPIO: 0-255, GPIO0 is LSB + * REG: inverted + */ +static unsigned LM93_GPI_FROM_REG(u8 reg) +{ + return ~reg & 0xff; +} + +/* + * alarm bitmask definitions + * The LM93 has nearly 64 bits of error status... I've pared that down to + * what I think is a useful subset in order to fit it into 32 bits. + * + * Especially note that the #VRD_HOT alarms are missing because we provide + * that information as values in another sysfs file. + * + * If libsensors is extended to support 64 bit values, this could be revisited. + */ +#define LM93_ALARM_IN1 0x00000001 +#define LM93_ALARM_IN2 0x00000002 +#define LM93_ALARM_IN3 0x00000004 +#define LM93_ALARM_IN4 0x00000008 +#define LM93_ALARM_IN5 0x00000010 +#define LM93_ALARM_IN6 0x00000020 +#define LM93_ALARM_IN7 0x00000040 +#define LM93_ALARM_IN8 0x00000080 +#define LM93_ALARM_IN9 0x00000100 +#define LM93_ALARM_IN10 0x00000200 +#define LM93_ALARM_IN11 0x00000400 +#define LM93_ALARM_IN12 0x00000800 +#define LM93_ALARM_IN13 0x00001000 +#define LM93_ALARM_IN14 0x00002000 +#define LM93_ALARM_IN15 0x00004000 +#define LM93_ALARM_IN16 0x00008000 +#define LM93_ALARM_FAN1 0x00010000 +#define LM93_ALARM_FAN2 0x00020000 +#define LM93_ALARM_FAN3 0x00040000 +#define LM93_ALARM_FAN4 0x00080000 +#define LM93_ALARM_PH1_ERR 0x00100000 +#define LM93_ALARM_PH2_ERR 0x00200000 +#define LM93_ALARM_SCSI1_ERR 0x00400000 +#define LM93_ALARM_SCSI2_ERR 0x00800000 +#define LM93_ALARM_DVDDP1_ERR 0x01000000 +#define LM93_ALARM_DVDDP2_ERR 0x02000000 +#define LM93_ALARM_D1_ERR 0x04000000 +#define LM93_ALARM_D2_ERR 0x08000000 +#define LM93_ALARM_TEMP1 0x10000000 +#define LM93_ALARM_TEMP2 0x20000000 +#define LM93_ALARM_TEMP3 0x40000000 + +static unsigned LM93_ALARMS_FROM_REG(struct block1_t b1) +{ + unsigned result; + result = b1.host_status_2 & 0x3f; + + if (vccp_limit_type[0]) + result |= (b1.host_status_4 & 0x10) << 2; + else + result |= b1.host_status_2 & 0x40; + + if (vccp_limit_type[1]) + result |= (b1.host_status_4 & 0x20) << 2; + else + result |= b1.host_status_2 & 0x80; + + result |= b1.host_status_3 << 8; + result |= (b1.fan_status & 0x0f) << 16; + result |= (b1.p1_prochot_status & 0x80) << 13; + result |= (b1.p2_prochot_status & 0x80) << 14; + result |= (b1.host_status_4 & 0xfc) << 20; + result |= (b1.host_status_1 & 0x07) << 28; + return result; +} + +#define MAX_RETRIES 5 + +static u8 lm93_read_byte(struct i2c_client *client, u8 reg) +{ + int value, i; + + /* retry in case of read errors */ + for (i = 1; i <= MAX_RETRIES; i++) { + value = i2c_smbus_read_byte_data(client, reg); + if (value >= 0) { + return value; + } else { + dev_warn(&client->dev, + "lm93: read byte data failed, address 0x%02x.\n", + reg); + mdelay(i + 3); + } + + } + + /* <TODO> what to return in case of error? */ + dev_err(&client->dev, "lm93: All read byte retries failed!!\n"); + return 0; +} + +static int lm93_write_byte(struct i2c_client *client, u8 reg, u8 value) +{ + int result; + + /* <TODO> how to handle write errors? */ + result = i2c_smbus_write_byte_data(client, reg, value); + + if (result < 0) + dev_warn(&client->dev, + "lm93: write byte data failed, 0x%02x at address 0x%02x.\n", + value, reg); + + return result; +} + +static u16 lm93_read_word(struct i2c_client *client, u8 reg) +{ + int value, i; + + /* retry in case of read errors */ + for (i = 1; i <= MAX_RETRIES; i++) { + value = i2c_smbus_read_word_data(client, reg); + if (value >= 0) { + return value; + } else { + dev_warn(&client->dev, + "lm93: read word data failed, address 0x%02x.\n", + reg); + mdelay(i + 3); + } + + } + + /* <TODO> what to return in case of error? */ + dev_err(&client->dev, "lm93: All read word retries failed!!\n"); + return 0; +} + +static int lm93_write_word(struct i2c_client *client, u8 reg, u16 value) +{ + int result; + + /* <TODO> how to handle write errors? */ + result = i2c_smbus_write_word_data(client, reg, value); + + if (result < 0) + dev_warn(&client->dev, + "lm93: write word data failed, 0x%04x at address 0x%02x.\n", + value, reg); + + return result; +} + +static u8 lm93_block_buffer[I2C_SMBUS_BLOCK_MAX]; + +/* + * read block data into values, retry if not expected length + * fbn => index to lm93_block_read_cmds table + * (Fixed Block Number - section 14.5.2 of LM93 datasheet) + */ +static void lm93_read_block(struct i2c_client *client, u8 fbn, u8 *values) +{ + int i, result = 0; + + for (i = 1; i <= MAX_RETRIES; i++) { + result = i2c_smbus_read_block_data(client, + lm93_block_read_cmds[fbn].cmd, lm93_block_buffer); + + if (result == lm93_block_read_cmds[fbn].len) { + break; + } else { + dev_warn(&client->dev, + "lm93: block read data failed, command 0x%02x.\n", + lm93_block_read_cmds[fbn].cmd); + mdelay(i + 3); + } + } + + if (result == lm93_block_read_cmds[fbn].len) { + memcpy(values, lm93_block_buffer, + lm93_block_read_cmds[fbn].len); + } else { + /* <TODO> what to do in case of error? */ + } +} + +static struct lm93_data *lm93_update_device(struct device *dev) +{ + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + const unsigned long interval = HZ + (HZ / 2); + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + interval) || + !data->valid) { + + data->update(data, client); + data->last_updated = jiffies; + data->valid = true; + } + + mutex_unlock(&data->update_lock); + return data; +} + +/* update routine for data that has no corresponding SMBus block command */ +static void lm93_update_client_common(struct lm93_data *data, + struct i2c_client *client) +{ + int i; + u8 *ptr; + + /* temp1 - temp4: limits */ + for (i = 0; i < 4; i++) { + data->temp_lim[i].min = + lm93_read_byte(client, LM93_REG_TEMP_MIN(i)); + data->temp_lim[i].max = + lm93_read_byte(client, LM93_REG_TEMP_MAX(i)); + } + + /* config register */ + data->config = lm93_read_byte(client, LM93_REG_CONFIG); + + /* vid1 - vid2: values */ + for (i = 0; i < 2; i++) + data->vid[i] = lm93_read_byte(client, LM93_REG_VID(i)); + + /* prochot1 - prochot2: limits */ + for (i = 0; i < 2; i++) + data->prochot_max[i] = lm93_read_byte(client, + LM93_REG_PROCHOT_MAX(i)); + + /* vccp1 - vccp2: VID relative limits */ + for (i = 0; i < 2; i++) + data->vccp_limits[i] = lm93_read_byte(client, + LM93_REG_VCCP_LIMIT_OFF(i)); + + /* GPIO input state */ + data->gpi = lm93_read_byte(client, LM93_REG_GPI); + + /* #PROCHOT override state */ + data->prochot_override = lm93_read_byte(client, + LM93_REG_PROCHOT_OVERRIDE); + + /* #PROCHOT intervals */ + data->prochot_interval = lm93_read_byte(client, + LM93_REG_PROCHOT_INTERVAL); + + /* Fan Boost Temperature registers */ + for (i = 0; i < 4; i++) + data->boost[i] = lm93_read_byte(client, LM93_REG_BOOST(i)); + + /* Fan Boost Temperature Hyst. registers */ + data->boost_hyst[0] = lm93_read_byte(client, LM93_REG_BOOST_HYST_12); + data->boost_hyst[1] = lm93_read_byte(client, LM93_REG_BOOST_HYST_34); + + /* Temperature Zone Min. PWM & Hysteresis registers */ + data->auto_pwm_min_hyst[0] = + lm93_read_byte(client, LM93_REG_PWM_MIN_HYST_12); + data->auto_pwm_min_hyst[1] = + lm93_read_byte(client, LM93_REG_PWM_MIN_HYST_34); + + /* #PROCHOT & #VRDHOT PWM Ramp Control register */ + data->pwm_ramp_ctl = lm93_read_byte(client, LM93_REG_PWM_RAMP_CTL); + + /* misc setup registers */ + data->sfc1 = lm93_read_byte(client, LM93_REG_SFC1); + data->sfc2 = lm93_read_byte(client, LM93_REG_SFC2); + data->sf_tach_to_pwm = lm93_read_byte(client, + LM93_REG_SF_TACH_TO_PWM); + + /* write back alarm values to clear */ + for (i = 0, ptr = (u8 *)(&data->block1); i < 8; i++) + lm93_write_byte(client, LM93_REG_HOST_ERROR_1 + i, *(ptr + i)); +} + +/* update routine which uses SMBus block data commands */ +static void lm93_update_client_full(struct lm93_data *data, + struct i2c_client *client) +{ + dev_dbg(&client->dev, "starting device update (block data enabled)\n"); + + /* in1 - in16: values & limits */ + lm93_read_block(client, 3, (u8 *)(data->block3)); + lm93_read_block(client, 7, (u8 *)(data->block7)); + + /* temp1 - temp4: values */ + lm93_read_block(client, 2, (u8 *)(data->block2)); + + /* prochot1 - prochot2: values */ + lm93_read_block(client, 4, (u8 *)(data->block4)); + + /* fan1 - fan4: values & limits */ + lm93_read_block(client, 5, (u8 *)(data->block5)); + lm93_read_block(client, 8, (u8 *)(data->block8)); + + /* pmw control registers */ + lm93_read_block(client, 9, (u8 *)(data->block9)); + + /* alarm values */ + lm93_read_block(client, 1, (u8 *)(&data->block1)); + + /* auto/pwm registers */ + lm93_read_block(client, 10, (u8 *)(&data->block10)); + + lm93_update_client_common(data, client); +} + +/* update routine which uses SMBus byte/word data commands only */ +static void lm93_update_client_min(struct lm93_data *data, + struct i2c_client *client) +{ + int i, j; + u8 *ptr; + + dev_dbg(&client->dev, "starting device update (block data disabled)\n"); + + /* in1 - in16: values & limits */ + for (i = 0; i < 16; i++) { + data->block3[i] = + lm93_read_byte(client, LM93_REG_IN(i)); + data->block7[i].min = + lm93_read_byte(client, LM93_REG_IN_MIN(i)); + data->block7[i].max = + lm93_read_byte(client, LM93_REG_IN_MAX(i)); + } + + /* temp1 - temp4: values */ + for (i = 0; i < 4; i++) { + data->block2[i] = + lm93_read_byte(client, LM93_REG_TEMP(i)); + } + + /* prochot1 - prochot2: values */ + for (i = 0; i < 2; i++) { + data->block4[i].cur = + lm93_read_byte(client, LM93_REG_PROCHOT_CUR(i)); + data->block4[i].avg = + lm93_read_byte(client, LM93_REG_PROCHOT_AVG(i)); + } + + /* fan1 - fan4: values & limits */ + for (i = 0; i < 4; i++) { + data->block5[i] = + lm93_read_word(client, LM93_REG_FAN(i)); + data->block8[i] = + lm93_read_word(client, LM93_REG_FAN_MIN(i)); + } + + /* pwm control registers */ + for (i = 0; i < 2; i++) { + for (j = 0; j < 4; j++) { + data->block9[i][j] = + lm93_read_byte(client, LM93_REG_PWM_CTL(i, j)); + } + } + + /* alarm values */ + for (i = 0, ptr = (u8 *)(&data->block1); i < 8; i++) { + *(ptr + i) = + lm93_read_byte(client, LM93_REG_HOST_ERROR_1 + i); + } + + /* auto/pwm (base temp) registers */ + for (i = 0; i < 4; i++) { + data->block10.base[i] = + lm93_read_byte(client, LM93_REG_TEMP_BASE(i)); + } + + /* auto/pwm (offset temp) registers */ + for (i = 0; i < 12; i++) { + data->block10.offset[i] = + lm93_read_byte(client, LM93_REG_TEMP_OFFSET(i)); + } + + lm93_update_client_common(data, client); +} + +/* following are the sysfs callback functions */ +static ssize_t in_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_IN_FROM_REG(nr, data->block3[nr])); +} + +static SENSOR_DEVICE_ATTR_RO(in1_input, in, 0); +static SENSOR_DEVICE_ATTR_RO(in2_input, in, 1); +static SENSOR_DEVICE_ATTR_RO(in3_input, in, 2); +static SENSOR_DEVICE_ATTR_RO(in4_input, in, 3); +static SENSOR_DEVICE_ATTR_RO(in5_input, in, 4); +static SENSOR_DEVICE_ATTR_RO(in6_input, in, 5); +static SENSOR_DEVICE_ATTR_RO(in7_input, in, 6); +static SENSOR_DEVICE_ATTR_RO(in8_input, in, 7); +static SENSOR_DEVICE_ATTR_RO(in9_input, in, 8); +static SENSOR_DEVICE_ATTR_RO(in10_input, in, 9); +static SENSOR_DEVICE_ATTR_RO(in11_input, in, 10); +static SENSOR_DEVICE_ATTR_RO(in12_input, in, 11); +static SENSOR_DEVICE_ATTR_RO(in13_input, in, 12); +static SENSOR_DEVICE_ATTR_RO(in14_input, in, 13); +static SENSOR_DEVICE_ATTR_RO(in15_input, in, 14); +static SENSOR_DEVICE_ATTR_RO(in16_input, in, 15); + +static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + int vccp = nr - 6; + long rc, vid; + + if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) { + vid = LM93_VID_FROM_REG(data->vid[vccp]); + rc = LM93_IN_MIN_FROM_REG(data->vccp_limits[vccp], vid); + } else { + rc = LM93_IN_FROM_REG(nr, data->block7[nr].min); + } + return sprintf(buf, "%ld\n", rc); +} + +static ssize_t in_min_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int vccp = nr - 6; + long vid; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) { + vid = LM93_VID_FROM_REG(data->vid[vccp]); + data->vccp_limits[vccp] = (data->vccp_limits[vccp] & 0xf0) | + LM93_IN_REL_TO_REG(val, 0, vid); + lm93_write_byte(client, LM93_REG_VCCP_LIMIT_OFF(vccp), + data->vccp_limits[vccp]); + } else { + data->block7[nr].min = LM93_IN_TO_REG(nr, val); + lm93_write_byte(client, LM93_REG_IN_MIN(nr), + data->block7[nr].min); + } + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 0); +static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 1); +static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 2); +static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 3); +static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 4); +static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 5); +static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 6); +static SENSOR_DEVICE_ATTR_RW(in8_min, in_min, 7); +static SENSOR_DEVICE_ATTR_RW(in9_min, in_min, 8); +static SENSOR_DEVICE_ATTR_RW(in10_min, in_min, 9); +static SENSOR_DEVICE_ATTR_RW(in11_min, in_min, 10); +static SENSOR_DEVICE_ATTR_RW(in12_min, in_min, 11); +static SENSOR_DEVICE_ATTR_RW(in13_min, in_min, 12); +static SENSOR_DEVICE_ATTR_RW(in14_min, in_min, 13); +static SENSOR_DEVICE_ATTR_RW(in15_min, in_min, 14); +static SENSOR_DEVICE_ATTR_RW(in16_min, in_min, 15); + +static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + int vccp = nr - 6; + long rc, vid; + + if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) { + vid = LM93_VID_FROM_REG(data->vid[vccp]); + rc = LM93_IN_MAX_FROM_REG(data->vccp_limits[vccp], vid); + } else { + rc = LM93_IN_FROM_REG(nr, data->block7[nr].max); + } + return sprintf(buf, "%ld\n", rc); +} + +static ssize_t in_max_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int vccp = nr - 6; + long vid; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) { + vid = LM93_VID_FROM_REG(data->vid[vccp]); + data->vccp_limits[vccp] = (data->vccp_limits[vccp] & 0x0f) | + LM93_IN_REL_TO_REG(val, 1, vid); + lm93_write_byte(client, LM93_REG_VCCP_LIMIT_OFF(vccp), + data->vccp_limits[vccp]); + } else { + data->block7[nr].max = LM93_IN_TO_REG(nr, val); + lm93_write_byte(client, LM93_REG_IN_MAX(nr), + data->block7[nr].max); + } + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 0); +static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 1); +static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 2); +static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 3); +static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 4); +static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 5); +static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 6); +static SENSOR_DEVICE_ATTR_RW(in8_max, in_max, 7); +static SENSOR_DEVICE_ATTR_RW(in9_max, in_max, 8); +static SENSOR_DEVICE_ATTR_RW(in10_max, in_max, 9); +static SENSOR_DEVICE_ATTR_RW(in11_max, in_max, 10); +static SENSOR_DEVICE_ATTR_RW(in12_max, in_max, 11); +static SENSOR_DEVICE_ATTR_RW(in13_max, in_max, 12); +static SENSOR_DEVICE_ATTR_RW(in14_max, in_max, 13); +static SENSOR_DEVICE_ATTR_RW(in15_max, in_max, 14); +static SENSOR_DEVICE_ATTR_RW(in16_max, in_max, 15); + +static ssize_t temp_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->block2[nr])); +} + +static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0); +static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); +static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2); + +static ssize_t temp_min_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->temp_lim[nr].min)); +} + +static ssize_t temp_min_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + long val; + int err; + + err = kstrtol(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->temp_lim[nr].min = LM93_TEMP_TO_REG(val); + lm93_write_byte(client, LM93_REG_TEMP_MIN(nr), data->temp_lim[nr].min); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1); +static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2); + +static ssize_t temp_max_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->temp_lim[nr].max)); +} + +static ssize_t temp_max_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + long val; + int err; + + err = kstrtol(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->temp_lim[nr].max = LM93_TEMP_TO_REG(val); + lm93_write_byte(client, LM93_REG_TEMP_MAX(nr), data->temp_lim[nr].max); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); +static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2); + +static ssize_t temp_auto_base_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->block10.base[nr])); +} + +static ssize_t temp_auto_base_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + long val; + int err; + + err = kstrtol(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->block10.base[nr] = LM93_TEMP_TO_REG(val); + lm93_write_byte(client, LM93_REG_TEMP_BASE(nr), data->block10.base[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(temp1_auto_base, temp_auto_base, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_auto_base, temp_auto_base, 1); +static SENSOR_DEVICE_ATTR_RW(temp3_auto_base, temp_auto_base, 2); + +static ssize_t temp_auto_boost_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->boost[nr])); +} + +static ssize_t temp_auto_boost_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + long val; + int err; + + err = kstrtol(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->boost[nr] = LM93_TEMP_TO_REG(val); + lm93_write_byte(client, LM93_REG_BOOST(nr), data->boost[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(temp1_auto_boost, temp_auto_boost, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_auto_boost, temp_auto_boost, 1); +static SENSOR_DEVICE_ATTR_RW(temp3_auto_boost, temp_auto_boost, 2); + +static ssize_t temp_auto_boost_hyst_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + int mode = LM93_TEMP_OFFSET_MODE_FROM_REG(data->sfc2, nr); + return sprintf(buf, "%d\n", + LM93_AUTO_BOOST_HYST_FROM_REGS(data, nr, mode)); +} + +static ssize_t temp_auto_boost_hyst_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + /* force 0.5C/bit mode */ + data->sfc2 = lm93_read_byte(client, LM93_REG_SFC2); + data->sfc2 |= ((nr < 2) ? 0x10 : 0x20); + lm93_write_byte(client, LM93_REG_SFC2, data->sfc2); + data->boost_hyst[nr/2] = LM93_AUTO_BOOST_HYST_TO_REG(data, val, nr, 1); + lm93_write_byte(client, LM93_REG_BOOST_HYST(nr), + data->boost_hyst[nr/2]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(temp1_auto_boost_hyst, temp_auto_boost_hyst, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_auto_boost_hyst, temp_auto_boost_hyst, 1); +static SENSOR_DEVICE_ATTR_RW(temp3_auto_boost_hyst, temp_auto_boost_hyst, 2); + +static ssize_t temp_auto_offset_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *s_attr = to_sensor_dev_attr_2(attr); + int nr = s_attr->index; + int ofs = s_attr->nr; + struct lm93_data *data = lm93_update_device(dev); + int mode = LM93_TEMP_OFFSET_MODE_FROM_REG(data->sfc2, nr); + return sprintf(buf, "%d\n", + LM93_TEMP_AUTO_OFFSET_FROM_REG(data->block10.offset[ofs], + nr, mode)); +} + +static ssize_t temp_auto_offset_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *s_attr = to_sensor_dev_attr_2(attr); + int nr = s_attr->index; + int ofs = s_attr->nr; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + /* force 0.5C/bit mode */ + data->sfc2 = lm93_read_byte(client, LM93_REG_SFC2); + data->sfc2 |= ((nr < 2) ? 0x10 : 0x20); + lm93_write_byte(client, LM93_REG_SFC2, data->sfc2); + data->block10.offset[ofs] = LM93_TEMP_AUTO_OFFSET_TO_REG( + data->block10.offset[ofs], val, nr, 1); + lm93_write_byte(client, LM93_REG_TEMP_OFFSET(ofs), + data->block10.offset[ofs]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset1, temp_auto_offset, 0, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset2, temp_auto_offset, 1, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset3, temp_auto_offset, 2, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset4, temp_auto_offset, 3, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset5, temp_auto_offset, 4, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset6, temp_auto_offset, 5, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset7, temp_auto_offset, 6, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset8, temp_auto_offset, 7, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset9, temp_auto_offset, 8, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset10, temp_auto_offset, 9, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset11, temp_auto_offset, 10, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_offset12, temp_auto_offset, 11, 0); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset1, temp_auto_offset, 0, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset2, temp_auto_offset, 1, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset3, temp_auto_offset, 2, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset4, temp_auto_offset, 3, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset5, temp_auto_offset, 4, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset6, temp_auto_offset, 5, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset7, temp_auto_offset, 6, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset8, temp_auto_offset, 7, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset9, temp_auto_offset, 8, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset10, temp_auto_offset, 9, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset11, temp_auto_offset, 10, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_offset12, temp_auto_offset, 11, 1); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset1, temp_auto_offset, 0, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset2, temp_auto_offset, 1, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset3, temp_auto_offset, 2, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset4, temp_auto_offset, 3, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset5, temp_auto_offset, 4, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset6, temp_auto_offset, 5, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset7, temp_auto_offset, 6, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset8, temp_auto_offset, 7, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset9, temp_auto_offset, 8, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset10, temp_auto_offset, 9, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset11, temp_auto_offset, 10, 2); +static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_offset12, temp_auto_offset, 11, 2); + +static ssize_t temp_auto_pwm_min_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + u8 reg, ctl4; + struct lm93_data *data = lm93_update_device(dev); + reg = data->auto_pwm_min_hyst[nr/2] >> 4 & 0x0f; + ctl4 = data->block9[nr][LM93_PWM_CTL4]; + return sprintf(buf, "%d\n", LM93_PWM_FROM_REG(reg, (ctl4 & 0x07) ? + LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ)); +} + +static ssize_t temp_auto_pwm_min_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 reg, ctl4; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + reg = lm93_read_byte(client, LM93_REG_PWM_MIN_HYST(nr)); + ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4)); + reg = (reg & 0x0f) | + LM93_PWM_TO_REG(val, (ctl4 & 0x07) ? + LM93_PWM_MAP_LO_FREQ : + LM93_PWM_MAP_HI_FREQ) << 4; + data->auto_pwm_min_hyst[nr/2] = reg; + lm93_write_byte(client, LM93_REG_PWM_MIN_HYST(nr), reg); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(temp1_auto_pwm_min, temp_auto_pwm_min, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_auto_pwm_min, temp_auto_pwm_min, 1); +static SENSOR_DEVICE_ATTR_RW(temp3_auto_pwm_min, temp_auto_pwm_min, 2); + +static ssize_t temp_auto_offset_hyst_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + int mode = LM93_TEMP_OFFSET_MODE_FROM_REG(data->sfc2, nr); + return sprintf(buf, "%d\n", LM93_TEMP_OFFSET_FROM_REG( + data->auto_pwm_min_hyst[nr / 2], mode)); +} + +static ssize_t temp_auto_offset_hyst_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 reg; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + /* force 0.5C/bit mode */ + data->sfc2 = lm93_read_byte(client, LM93_REG_SFC2); + data->sfc2 |= ((nr < 2) ? 0x10 : 0x20); + lm93_write_byte(client, LM93_REG_SFC2, data->sfc2); + reg = data->auto_pwm_min_hyst[nr/2]; + reg = (reg & 0xf0) | (LM93_TEMP_OFFSET_TO_REG(val, 1) & 0x0f); + data->auto_pwm_min_hyst[nr/2] = reg; + lm93_write_byte(client, LM93_REG_PWM_MIN_HYST(nr), reg); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(temp1_auto_offset_hyst, temp_auto_offset_hyst, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_auto_offset_hyst, temp_auto_offset_hyst, 1); +static SENSOR_DEVICE_ATTR_RW(temp3_auto_offset_hyst, temp_auto_offset_hyst, 2); + +static ssize_t fan_input_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute *s_attr = to_sensor_dev_attr(attr); + int nr = s_attr->index; + struct lm93_data *data = lm93_update_device(dev); + + return sprintf(buf, "%d\n", LM93_FAN_FROM_REG(data->block5[nr])); +} + +static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); +static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); +static SENSOR_DEVICE_ATTR_RO(fan3_input, fan_input, 2); +static SENSOR_DEVICE_ATTR_RO(fan4_input, fan_input, 3); + +static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + + return sprintf(buf, "%d\n", LM93_FAN_FROM_REG(data->block8[nr])); +} + +static ssize_t fan_min_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->block8[nr] = LM93_FAN_TO_REG(val); + lm93_write_word(client, LM93_REG_FAN_MIN(nr), data->block8[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); +static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); +static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2); +static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3); + +/* + * some tedious bit-twiddling here to deal with the register format: + * + * data->sf_tach_to_pwm: (tach to pwm mapping bits) + * + * bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 + * T4:P2 T4:P1 T3:P2 T3:P1 T2:P2 T2:P1 T1:P2 T1:P1 + * + * data->sfc2: (enable bits) + * + * bit | 3 | 2 | 1 | 0 + * T4 T3 T2 T1 + */ + +static ssize_t fan_smart_tach_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + long rc = 0; + int mapping; + + /* extract the relevant mapping */ + mapping = (data->sf_tach_to_pwm >> (nr * 2)) & 0x03; + + /* if there's a mapping and it's enabled */ + if (mapping && ((data->sfc2 >> nr) & 0x01)) + rc = mapping; + return sprintf(buf, "%ld\n", rc); +} + +/* + * helper function - must grab data->update_lock before calling + * fan is 0-3, indicating fan1-fan4 + */ +static void lm93_write_fan_smart_tach(struct i2c_client *client, + struct lm93_data *data, int fan, long value) +{ + /* insert the new mapping and write it out */ + data->sf_tach_to_pwm = lm93_read_byte(client, LM93_REG_SF_TACH_TO_PWM); + data->sf_tach_to_pwm &= ~(0x3 << fan * 2); + data->sf_tach_to_pwm |= value << fan * 2; + lm93_write_byte(client, LM93_REG_SF_TACH_TO_PWM, data->sf_tach_to_pwm); + + /* insert the enable bit and write it out */ + data->sfc2 = lm93_read_byte(client, LM93_REG_SFC2); + if (value) + data->sfc2 |= 1 << fan; + else + data->sfc2 &= ~(1 << fan); + lm93_write_byte(client, LM93_REG_SFC2, data->sfc2); +} + +static ssize_t fan_smart_tach_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + /* sanity test, ignore the write otherwise */ + if (val <= 2) { + /* can't enable if pwm freq is 22.5KHz */ + if (val) { + u8 ctl4 = lm93_read_byte(client, + LM93_REG_PWM_CTL(val - 1, LM93_PWM_CTL4)); + if ((ctl4 & 0x07) == 0) + val = 0; + } + lm93_write_fan_smart_tach(client, data, nr, val); + } + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(fan1_smart_tach, fan_smart_tach, 0); +static SENSOR_DEVICE_ATTR_RW(fan2_smart_tach, fan_smart_tach, 1); +static SENSOR_DEVICE_ATTR_RW(fan3_smart_tach, fan_smart_tach, 2); +static SENSOR_DEVICE_ATTR_RW(fan4_smart_tach, fan_smart_tach, 3); + +static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + u8 ctl2, ctl4; + long rc; + + ctl2 = data->block9[nr][LM93_PWM_CTL2]; + ctl4 = data->block9[nr][LM93_PWM_CTL4]; + if (ctl2 & 0x01) /* show user commanded value if enabled */ + rc = data->pwm_override[nr]; + else /* show present h/w value if manual pwm disabled */ + rc = LM93_PWM_FROM_REG(ctl2 >> 4, (ctl4 & 0x07) ? + LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ); + return sprintf(buf, "%ld\n", rc); +} + +static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 ctl2, ctl4; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + ctl2 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2)); + ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4)); + ctl2 = (ctl2 & 0x0f) | LM93_PWM_TO_REG(val, (ctl4 & 0x07) ? + LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ) << 4; + /* save user commanded value */ + data->pwm_override[nr] = LM93_PWM_FROM_REG(ctl2 >> 4, + (ctl4 & 0x07) ? LM93_PWM_MAP_LO_FREQ : + LM93_PWM_MAP_HI_FREQ); + lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2), ctl2); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0); +static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1); + +static ssize_t pwm_enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + u8 ctl2; + long rc; + + ctl2 = data->block9[nr][LM93_PWM_CTL2]; + if (ctl2 & 0x01) /* manual override enabled ? */ + rc = ((ctl2 & 0xF0) == 0xF0) ? 0 : 1; + else + rc = 2; + return sprintf(buf, "%ld\n", rc); +} + +static ssize_t pwm_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 ctl2; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + ctl2 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2)); + + switch (val) { + case 0: + ctl2 |= 0xF1; /* enable manual override, set PWM to max */ + break; + case 1: + ctl2 |= 0x01; /* enable manual override */ + break; + case 2: + ctl2 &= ~0x01; /* disable manual override */ + break; + default: + mutex_unlock(&data->update_lock); + return -EINVAL; + } + + lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2), ctl2); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0); +static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1); + +static ssize_t pwm_freq_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + u8 ctl4; + + ctl4 = data->block9[nr][LM93_PWM_CTL4]; + return sprintf(buf, "%d\n", LM93_PWM_FREQ_FROM_REG(ctl4)); +} + +/* + * helper function - must grab data->update_lock before calling + * pwm is 0-1, indicating pwm1-pwm2 + * this disables smart tach for all tach channels bound to the given pwm + */ +static void lm93_disable_fan_smart_tach(struct i2c_client *client, + struct lm93_data *data, int pwm) +{ + int mapping = lm93_read_byte(client, LM93_REG_SF_TACH_TO_PWM); + int mask; + + /* collapse the mapping into a mask of enable bits */ + mapping = (mapping >> pwm) & 0x55; + mask = mapping & 0x01; + mask |= (mapping & 0x04) >> 1; + mask |= (mapping & 0x10) >> 2; + mask |= (mapping & 0x40) >> 3; + + /* disable smart tach according to the mask */ + data->sfc2 = lm93_read_byte(client, LM93_REG_SFC2); + data->sfc2 &= ~mask; + lm93_write_byte(client, LM93_REG_SFC2, data->sfc2); +} + +static ssize_t pwm_freq_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 ctl4; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4)); + ctl4 = (ctl4 & 0xf8) | LM93_PWM_FREQ_TO_REG(val); + data->block9[nr][LM93_PWM_CTL4] = ctl4; + /* ctl4 == 0 -> 22.5KHz -> disable smart tach */ + if (!ctl4) + lm93_disable_fan_smart_tach(client, data, nr); + lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4), ctl4); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(pwm1_freq, pwm_freq, 0); +static SENSOR_DEVICE_ATTR_RW(pwm2_freq, pwm_freq, 1); + +static ssize_t pwm_auto_channels_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", data->block9[nr][LM93_PWM_CTL1]); +} + +static ssize_t pwm_auto_channels_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->block9[nr][LM93_PWM_CTL1] = clamp_val(val, 0, 255); + lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL1), + data->block9[nr][LM93_PWM_CTL1]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(pwm1_auto_channels, pwm_auto_channels, 0); +static SENSOR_DEVICE_ATTR_RW(pwm2_auto_channels, pwm_auto_channels, 1); + +static ssize_t pwm_auto_spinup_min_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + u8 ctl3, ctl4; + + ctl3 = data->block9[nr][LM93_PWM_CTL3]; + ctl4 = data->block9[nr][LM93_PWM_CTL4]; + return sprintf(buf, "%d\n", + LM93_PWM_FROM_REG(ctl3 & 0x0f, (ctl4 & 0x07) ? + LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ)); +} + +static ssize_t pwm_auto_spinup_min_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 ctl3, ctl4; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + ctl3 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3)); + ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4)); + ctl3 = (ctl3 & 0xf0) | LM93_PWM_TO_REG(val, (ctl4 & 0x07) ? + LM93_PWM_MAP_LO_FREQ : + LM93_PWM_MAP_HI_FREQ); + data->block9[nr][LM93_PWM_CTL3] = ctl3; + lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3), ctl3); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(pwm1_auto_spinup_min, pwm_auto_spinup_min, 0); +static SENSOR_DEVICE_ATTR_RW(pwm2_auto_spinup_min, pwm_auto_spinup_min, 1); + +static ssize_t pwm_auto_spinup_time_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_SPINUP_TIME_FROM_REG( + data->block9[nr][LM93_PWM_CTL3])); +} + +static ssize_t pwm_auto_spinup_time_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 ctl3; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + ctl3 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3)); + ctl3 = (ctl3 & 0x1f) | (LM93_SPINUP_TIME_TO_REG(val) << 5 & 0xe0); + data->block9[nr][LM93_PWM_CTL3] = ctl3; + lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3), ctl3); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(pwm1_auto_spinup_time, pwm_auto_spinup_time, 0); +static SENSOR_DEVICE_ATTR_RW(pwm2_auto_spinup_time, pwm_auto_spinup_time, 1); + +static ssize_t pwm_auto_prochot_ramp_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", + LM93_RAMP_FROM_REG(data->pwm_ramp_ctl >> 4 & 0x0f)); +} + +static ssize_t pwm_auto_prochot_ramp_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 ramp; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + ramp = lm93_read_byte(client, LM93_REG_PWM_RAMP_CTL); + ramp = (ramp & 0x0f) | (LM93_RAMP_TO_REG(val) << 4 & 0xf0); + lm93_write_byte(client, LM93_REG_PWM_RAMP_CTL, ramp); + mutex_unlock(&data->update_lock); + return count; +} + +static DEVICE_ATTR_RW(pwm_auto_prochot_ramp); + +static ssize_t pwm_auto_vrdhot_ramp_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", + LM93_RAMP_FROM_REG(data->pwm_ramp_ctl & 0x0f)); +} + +static ssize_t pwm_auto_vrdhot_ramp_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 ramp; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + ramp = lm93_read_byte(client, LM93_REG_PWM_RAMP_CTL); + ramp = (ramp & 0xf0) | (LM93_RAMP_TO_REG(val) & 0x0f); + lm93_write_byte(client, LM93_REG_PWM_RAMP_CTL, ramp); + mutex_unlock(&data->update_lock); + return 0; +} + +static DEVICE_ATTR_RW(pwm_auto_vrdhot_ramp); + +static ssize_t vid_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_VID_FROM_REG(data->vid[nr])); +} + +static SENSOR_DEVICE_ATTR_RO(cpu0_vid, vid, 0); +static SENSOR_DEVICE_ATTR_RO(cpu1_vid, vid, 1); + +static ssize_t prochot_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", data->block4[nr].cur); +} + +static SENSOR_DEVICE_ATTR_RO(prochot1, prochot, 0); +static SENSOR_DEVICE_ATTR_RO(prochot2, prochot, 1); + +static ssize_t prochot_avg_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", data->block4[nr].avg); +} + +static SENSOR_DEVICE_ATTR_RO(prochot1_avg, prochot_avg, 0); +static SENSOR_DEVICE_ATTR_RO(prochot2_avg, prochot_avg, 1); + +static ssize_t prochot_max_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", data->prochot_max[nr]); +} + +static ssize_t prochot_max_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->prochot_max[nr] = LM93_PROCHOT_TO_REG(val); + lm93_write_byte(client, LM93_REG_PROCHOT_MAX(nr), + data->prochot_max[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(prochot1_max, prochot_max, 0); +static SENSOR_DEVICE_ATTR_RW(prochot2_max, prochot_max, 1); + +static const u8 prochot_override_mask[] = { 0x80, 0x40 }; + +static ssize_t prochot_override_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", + (data->prochot_override & prochot_override_mask[nr]) ? 1 : 0); +} + +static ssize_t prochot_override_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + if (val) + data->prochot_override |= prochot_override_mask[nr]; + else + data->prochot_override &= (~prochot_override_mask[nr]); + lm93_write_byte(client, LM93_REG_PROCHOT_OVERRIDE, + data->prochot_override); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(prochot1_override, prochot_override, 0); +static SENSOR_DEVICE_ATTR_RW(prochot2_override, prochot_override, 1); + +static ssize_t prochot_interval_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + u8 tmp; + if (nr == 1) + tmp = (data->prochot_interval & 0xf0) >> 4; + else + tmp = data->prochot_interval & 0x0f; + return sprintf(buf, "%d\n", LM93_INTERVAL_FROM_REG(tmp)); +} + +static ssize_t prochot_interval_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 tmp; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + tmp = lm93_read_byte(client, LM93_REG_PROCHOT_INTERVAL); + if (nr == 1) + tmp = (tmp & 0x0f) | (LM93_INTERVAL_TO_REG(val) << 4); + else + tmp = (tmp & 0xf0) | LM93_INTERVAL_TO_REG(val); + data->prochot_interval = tmp; + lm93_write_byte(client, LM93_REG_PROCHOT_INTERVAL, tmp); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(prochot1_interval, prochot_interval, 0); +static SENSOR_DEVICE_ATTR_RW(prochot2_interval, prochot_interval, 1); + +static ssize_t prochot_override_duty_cycle_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", data->prochot_override & 0x0f); +} + +static ssize_t prochot_override_duty_cycle_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->prochot_override = (data->prochot_override & 0xf0) | + clamp_val(val, 0, 15); + lm93_write_byte(client, LM93_REG_PROCHOT_OVERRIDE, + data->prochot_override); + mutex_unlock(&data->update_lock); + return count; +} + +static DEVICE_ATTR_RW(prochot_override_duty_cycle); + +static ssize_t prochot_short_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", (data->config & 0x10) ? 1 : 0); +} + +static ssize_t prochot_short_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lm93_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + if (val) + data->config |= 0x10; + else + data->config &= ~0x10; + lm93_write_byte(client, LM93_REG_CONFIG, data->config); + mutex_unlock(&data->update_lock); + return count; +} + +static DEVICE_ATTR_RW(prochot_short); + +static ssize_t vrdhot_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = (to_sensor_dev_attr(attr))->index; + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", + data->block1.host_status_1 & (1 << (nr + 4)) ? 1 : 0); +} + +static SENSOR_DEVICE_ATTR_RO(vrdhot1, vrdhot, 0); +static SENSOR_DEVICE_ATTR_RO(vrdhot2, vrdhot, 1); + +static ssize_t gpio_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_GPI_FROM_REG(data->gpi)); +} + +static DEVICE_ATTR_RO(gpio); + +static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct lm93_data *data = lm93_update_device(dev); + return sprintf(buf, "%d\n", LM93_ALARMS_FROM_REG(data->block1)); +} + +static DEVICE_ATTR_RO(alarms); + +static struct attribute *lm93_attrs[] = { + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_in7_input.dev_attr.attr, + &sensor_dev_attr_in8_input.dev_attr.attr, + &sensor_dev_attr_in9_input.dev_attr.attr, + &sensor_dev_attr_in10_input.dev_attr.attr, + &sensor_dev_attr_in11_input.dev_attr.attr, + &sensor_dev_attr_in12_input.dev_attr.attr, + &sensor_dev_attr_in13_input.dev_attr.attr, + &sensor_dev_attr_in14_input.dev_attr.attr, + &sensor_dev_attr_in15_input.dev_attr.attr, + &sensor_dev_attr_in16_input.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in7_min.dev_attr.attr, + &sensor_dev_attr_in8_min.dev_attr.attr, + &sensor_dev_attr_in9_min.dev_attr.attr, + &sensor_dev_attr_in10_min.dev_attr.attr, + &sensor_dev_attr_in11_min.dev_attr.attr, + &sensor_dev_attr_in12_min.dev_attr.attr, + &sensor_dev_attr_in13_min.dev_attr.attr, + &sensor_dev_attr_in14_min.dev_attr.attr, + &sensor_dev_attr_in15_min.dev_attr.attr, + &sensor_dev_attr_in16_min.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, + &sensor_dev_attr_in7_max.dev_attr.attr, + &sensor_dev_attr_in8_max.dev_attr.attr, + &sensor_dev_attr_in9_max.dev_attr.attr, + &sensor_dev_attr_in10_max.dev_attr.attr, + &sensor_dev_attr_in11_max.dev_attr.attr, + &sensor_dev_attr_in12_max.dev_attr.attr, + &sensor_dev_attr_in13_max.dev_attr.attr, + &sensor_dev_attr_in14_max.dev_attr.attr, + &sensor_dev_attr_in15_max.dev_attr.attr, + &sensor_dev_attr_in16_max.dev_attr.attr, + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp1_min.dev_attr.attr, + &sensor_dev_attr_temp2_min.dev_attr.attr, + &sensor_dev_attr_temp3_min.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp3_max.dev_attr.attr, + &sensor_dev_attr_temp1_auto_base.dev_attr.attr, + &sensor_dev_attr_temp2_auto_base.dev_attr.attr, + &sensor_dev_attr_temp3_auto_base.dev_attr.attr, + &sensor_dev_attr_temp1_auto_boost.dev_attr.attr, + &sensor_dev_attr_temp2_auto_boost.dev_attr.attr, + &sensor_dev_attr_temp3_auto_boost.dev_attr.attr, + &sensor_dev_attr_temp1_auto_boost_hyst.dev_attr.attr, + &sensor_dev_attr_temp2_auto_boost_hyst.dev_attr.attr, + &sensor_dev_attr_temp3_auto_boost_hyst.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset1.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset2.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset3.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset4.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset5.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset6.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset7.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset8.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset9.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset10.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset11.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset12.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset1.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset2.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset3.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset4.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset5.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset6.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset7.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset8.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset9.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset10.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset11.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset12.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset1.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset2.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset3.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset4.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset5.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset6.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset7.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset8.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset9.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset10.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset11.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset12.dev_attr.attr, + &sensor_dev_attr_temp1_auto_pwm_min.dev_attr.attr, + &sensor_dev_attr_temp2_auto_pwm_min.dev_attr.attr, + &sensor_dev_attr_temp3_auto_pwm_min.dev_attr.attr, + &sensor_dev_attr_temp1_auto_offset_hyst.dev_attr.attr, + &sensor_dev_attr_temp2_auto_offset_hyst.dev_attr.attr, + &sensor_dev_attr_temp3_auto_offset_hyst.dev_attr.attr, + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan4_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, + &sensor_dev_attr_fan3_min.dev_attr.attr, + &sensor_dev_attr_fan4_min.dev_attr.attr, + &sensor_dev_attr_fan1_smart_tach.dev_attr.attr, + &sensor_dev_attr_fan2_smart_tach.dev_attr.attr, + &sensor_dev_attr_fan3_smart_tach.dev_attr.attr, + &sensor_dev_attr_fan4_smart_tach.dev_attr.attr, + &sensor_dev_attr_pwm1.dev_attr.attr, + &sensor_dev_attr_pwm2.dev_attr.attr, + &sensor_dev_attr_pwm1_enable.dev_attr.attr, + &sensor_dev_attr_pwm2_enable.dev_attr.attr, + &sensor_dev_attr_pwm1_freq.dev_attr.attr, + &sensor_dev_attr_pwm2_freq.dev_attr.attr, + &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr, + &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr, + &sensor_dev_attr_pwm1_auto_spinup_min.dev_attr.attr, + &sensor_dev_attr_pwm2_auto_spinup_min.dev_attr.attr, + &sensor_dev_attr_pwm1_auto_spinup_time.dev_attr.attr, + &sensor_dev_attr_pwm2_auto_spinup_time.dev_attr.attr, + &dev_attr_pwm_auto_prochot_ramp.attr, + &dev_attr_pwm_auto_vrdhot_ramp.attr, + &sensor_dev_attr_cpu0_vid.dev_attr.attr, + &sensor_dev_attr_cpu1_vid.dev_attr.attr, + &sensor_dev_attr_prochot1.dev_attr.attr, + &sensor_dev_attr_prochot2.dev_attr.attr, + &sensor_dev_attr_prochot1_avg.dev_attr.attr, + &sensor_dev_attr_prochot2_avg.dev_attr.attr, + &sensor_dev_attr_prochot1_max.dev_attr.attr, + &sensor_dev_attr_prochot2_max.dev_attr.attr, + &sensor_dev_attr_prochot1_override.dev_attr.attr, + &sensor_dev_attr_prochot2_override.dev_attr.attr, + &sensor_dev_attr_prochot1_interval.dev_attr.attr, + &sensor_dev_attr_prochot2_interval.dev_attr.attr, + &dev_attr_prochot_override_duty_cycle.attr, + &dev_attr_prochot_short.attr, + &sensor_dev_attr_vrdhot1.dev_attr.attr, + &sensor_dev_attr_vrdhot2.dev_attr.attr, + &dev_attr_gpio.attr, + &dev_attr_alarms.attr, + NULL +}; + +ATTRIBUTE_GROUPS(lm93); + +static void lm93_init_client(struct i2c_client *client) +{ + int i; + u8 reg; + + /* configure VID pin input thresholds */ + reg = lm93_read_byte(client, LM93_REG_GPI_VID_CTL); + lm93_write_byte(client, LM93_REG_GPI_VID_CTL, + reg | (vid_agtl ? 0x03 : 0x00)); + + if (init) { + /* enable #ALERT pin */ + reg = lm93_read_byte(client, LM93_REG_CONFIG); + lm93_write_byte(client, LM93_REG_CONFIG, reg | 0x08); + + /* enable ASF mode for BMC status registers */ + reg = lm93_read_byte(client, LM93_REG_STATUS_CONTROL); + lm93_write_byte(client, LM93_REG_STATUS_CONTROL, reg | 0x02); + + /* set sleep state to S0 */ + lm93_write_byte(client, LM93_REG_SLEEP_CONTROL, 0); + + /* unmask #VRDHOT and dynamic VCCP (if nec) error events */ + reg = lm93_read_byte(client, LM93_REG_MISC_ERR_MASK); + reg &= ~0x03; + reg &= ~(vccp_limit_type[0] ? 0x10 : 0); + reg &= ~(vccp_limit_type[1] ? 0x20 : 0); + lm93_write_byte(client, LM93_REG_MISC_ERR_MASK, reg); + } + + /* start monitoring */ + reg = lm93_read_byte(client, LM93_REG_CONFIG); + lm93_write_byte(client, LM93_REG_CONFIG, reg | 0x01); + + /* spin until ready */ + for (i = 0; i < 20; i++) { + msleep(10); + if ((lm93_read_byte(client, LM93_REG_CONFIG) & 0x80) == 0x80) + return; + } + + dev_warn(&client->dev, + "timed out waiting for sensor chip to signal ready!\n"); +} + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int lm93_detect(struct i2c_client *client, struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = client->adapter; + int mfr, ver; + const char *name; + + if (!i2c_check_functionality(adapter, LM93_SMBUS_FUNC_MIN)) + return -ENODEV; + + /* detection */ + mfr = lm93_read_byte(client, LM93_REG_MFR_ID); + if (mfr != 0x01) { + dev_dbg(&adapter->dev, + "detect failed, bad manufacturer id 0x%02x!\n", mfr); + return -ENODEV; + } + + ver = lm93_read_byte(client, LM93_REG_VER); + switch (ver) { + case LM93_MFR_ID: + case LM93_MFR_ID_PROTOTYPE: + name = "lm93"; + break; + case LM94_MFR_ID_2: + case LM94_MFR_ID: + case LM94_MFR_ID_PROTOTYPE: + name = "lm94"; + break; + default: + dev_dbg(&adapter->dev, + "detect failed, bad version id 0x%02x!\n", ver); + return -ENODEV; + } + + strscpy(info->type, name, I2C_NAME_SIZE); + dev_dbg(&adapter->dev, "loading %s at %d, 0x%02x\n", + client->name, i2c_adapter_id(client->adapter), + client->addr); + + return 0; +} + +static int lm93_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct lm93_data *data; + struct device *hwmon_dev; + int func; + void (*update)(struct lm93_data *, struct i2c_client *); + + /* choose update routine based on bus capabilities */ + func = i2c_get_functionality(client->adapter); + if (((LM93_SMBUS_FUNC_FULL & func) == LM93_SMBUS_FUNC_FULL) && + (!disable_block)) { + dev_dbg(dev, "using SMBus block data transactions\n"); + update = lm93_update_client_full; + } else if ((LM93_SMBUS_FUNC_MIN & func) == LM93_SMBUS_FUNC_MIN) { + dev_dbg(dev, "disabled SMBus block data transactions\n"); + update = lm93_update_client_min; + } else { + dev_dbg(dev, "detect failed, smbus byte and/or word data not supported!\n"); + return -ENODEV; + } + + data = devm_kzalloc(dev, sizeof(struct lm93_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + /* housekeeping */ + data->client = client; + data->update = update; + mutex_init(&data->update_lock); + + /* initialize the chip */ + lm93_init_client(client); + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, + lm93_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id lm93_id[] = { + { "lm93", 0 }, + { "lm94", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, lm93_id); + +static struct i2c_driver lm93_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "lm93", + }, + .probe_new = lm93_probe, + .id_table = lm93_id, + .detect = lm93_detect, + .address_list = normal_i2c, +}; + +module_i2c_driver(lm93_driver); + +MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>, " + "Hans J. Koch <hjk@hansjkoch.de>"); +MODULE_DESCRIPTION("LM93 driver"); +MODULE_LICENSE("GPL"); |