| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Juerg Haefliger | 11727 | 93.77% | 16 | 32.65% |
| Jean Delvare | 368 | 2.94% | 9 | 18.37% |
| Guenter Roeck | 326 | 2.61% | 5 | 10.20% |
| Axel Lin | 25 | 0.20% | 1 | 2.04% |
| Joe Perches | 15 | 0.12% | 1 | 2.04% |
| Julia Lawall | 7 | 0.06% | 1 | 2.04% |
| Stephen Kitt | 7 | 0.06% | 1 | 2.04% |
| Mark M. Hoffman | 7 | 0.06% | 2 | 4.08% |
| Uwe Kleine-König | 4 | 0.03% | 3 | 6.12% |
| Tony Jones | 4 | 0.03% | 1 | 2.04% |
| Al Viro | 3 | 0.02% | 1 | 2.04% |
| Paul Fertser | 3 | 0.02% | 1 | 2.04% |
| Bernhard C. Schrenk | 2 | 0.02% | 1 | 2.04% |
| Rusty Russell | 2 | 0.02% | 1 | 2.04% |
| Thomas Gleixner | 2 | 0.02% | 1 | 2.04% |
| Wolfram Sang | 1 | 0.01% | 1 | 2.04% |
| H Hartley Sweeten | 1 | 0.01% | 1 | 2.04% |
| Greg Kroah-Hartman | 1 | 0.01% | 1 | 2.04% |
| Roel Kluin | 1 | 0.01% | 1 | 2.04% |
| Total | 12506 | 49 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027, * and SCH5127 Super-I/O chips integrated hardware monitoring * features. * Copyright (c) 2007, 2008, 2009, 2010 Juerg Haefliger <juergh@gmail.com> * * This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access * the chip registers if a DME1737, A8000, or SCH5027 is found and the ISA bus * if a SCH311x or SCH5127 chip is found. Both types of chips have very * similar hardware monitoring capabilities but differ in the way they can be * accessed. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/hwmon-vid.h> #include <linux/err.h> #include <linux/mutex.h> #include <linux/acpi.h> #include <linux/io.h> /* ISA device, if found */ static struct platform_device *pdev; /* Module load parameters */ static bool force_start; module_param(force_start, bool, 0); MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs"); static unsigned short force_id; module_param(force_id, ushort, 0); MODULE_PARM_DESC(force_id, "Override the detected device ID"); static bool probe_all_addr; module_param(probe_all_addr, bool, 0); MODULE_PARM_DESC(probe_all_addr, "Include probing of non-standard LPC addresses"); /* Addresses to scan */ static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END}; enum chips { dme1737, sch5027, sch311x, sch5127 }; #define DO_REPORT "Please report to the driver maintainer." /* --------------------------------------------------------------------- * Registers * * The sensors are defined as follows: * * Voltages Temperatures * -------- ------------ * in0 +5VTR (+5V stdby) temp1 Remote diode 1 * in1 Vccp (proc core) temp2 Internal temp * in2 VCC (internal +3.3V) temp3 Remote diode 2 * in3 +5V * in4 +12V * in5 VTR (+3.3V stby) * in6 Vbat * in7 Vtrip (sch5127 only) * * --------------------------------------------------------------------- */ /* Voltages (in) numbered 0-7 (ix) */ #define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) : \ (ix) < 7 ? 0x94 + (ix) : \ 0x1f) #define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \ : 0x91 + (ix) * 2) #define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \ : 0x92 + (ix) * 2) /* Temperatures (temp) numbered 0-2 (ix) */ #define DME1737_REG_TEMP(ix) (0x25 + (ix)) #define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2) #define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2) #define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \ : 0x1c + (ix)) /* * Voltage and temperature LSBs * The LSBs (4 bits each) are stored in 5 registers with the following layouts: * IN_TEMP_LSB(0) = [in5, in6] * IN_TEMP_LSB(1) = [temp3, temp1] * IN_TEMP_LSB(2) = [in4, temp2] * IN_TEMP_LSB(3) = [in3, in0] * IN_TEMP_LSB(4) = [in2, in1] * IN_TEMP_LSB(5) = [res, in7] */ #define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix)) static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5}; static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4}; static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1}; static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0}; /* Fans numbered 0-5 (ix) */ #define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \ : 0xa1 + (ix) * 2) #define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \ : 0xa5 + (ix) * 2) #define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \ : 0xb2 + (ix)) #define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */ /* PWMs numbered 0-2, 4-5 (ix) */ #define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \ : 0xa1 + (ix)) #define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */ #define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */ #define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \ : 0xa3 + (ix)) /* * The layout of the ramp rate registers is different from the other pwm * registers. The bits for the 3 PWMs are stored in 2 registers: * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0] * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0] */ #define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */ /* Thermal zones 0-2 */ #define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix)) #define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix)) /* * The layout of the hysteresis registers is different from the other zone * registers. The bits for the 3 zones are stored in 2 registers: * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0] * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES] */ #define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix)) /* * Alarm registers and bit mapping * The 3 8-bit alarm registers will be concatenated to a single 32-bit * alarm value [0, ALARM3, ALARM2, ALARM1]. */ #define DME1737_REG_ALARM1 0x41 #define DME1737_REG_ALARM2 0x42 #define DME1737_REG_ALARM3 0x83 static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18}; static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6}; static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23}; /* Miscellaneous registers */ #define DME1737_REG_DEVICE 0x3d #define DME1737_REG_COMPANY 0x3e #define DME1737_REG_VERSTEP 0x3f #define DME1737_REG_CONFIG 0x40 #define DME1737_REG_CONFIG2 0x7f #define DME1737_REG_VID 0x43 #define DME1737_REG_TACH_PWM 0x81 /* --------------------------------------------------------------------- * Misc defines * --------------------------------------------------------------------- */ /* Chip identification */ #define DME1737_COMPANY_SMSC 0x5c #define DME1737_VERSTEP 0x88 #define DME1737_VERSTEP_MASK 0xf8 #define SCH311X_DEVICE 0x8c #define SCH5027_VERSTEP 0x69 #define SCH5127_DEVICE 0x8e /* Device ID values (global configuration register index 0x20) */ #define DME1737_ID_1 0x77 #define DME1737_ID_2 0x78 #define SCH3112_ID 0x7c #define SCH3114_ID 0x7d #define SCH3116_ID 0x7f #define SCH5027_ID 0x89 #define SCH5127_ID 0x86 /* Length of ISA address segment */ #define DME1737_EXTENT 2 /* chip-dependent features */ #define HAS_TEMP_OFFSET (1 << 0) /* bit 0 */ #define HAS_VID (1 << 1) /* bit 1 */ #define HAS_ZONE3 (1 << 2) /* bit 2 */ #define HAS_ZONE_HYST (1 << 3) /* bit 3 */ #define HAS_PWM_MIN (1 << 4) /* bit 4 */ #define HAS_FAN(ix) (1 << ((ix) + 5)) /* bits 5-10 */ #define HAS_PWM(ix) (1 << ((ix) + 11)) /* bits 11-16 */ #define HAS_IN7 (1 << 17) /* bit 17 */ /* --------------------------------------------------------------------- * Data structures and manipulation thereof * --------------------------------------------------------------------- */ struct dme1737_data { struct i2c_client *client; /* for I2C devices only */ struct device *hwmon_dev; const char *name; unsigned int addr; /* for ISA devices only */ struct mutex update_lock; bool valid; /* true if following fields are valid */ unsigned long last_update; /* in jiffies */ unsigned long last_vbat; /* in jiffies */ enum chips type; const int *in_nominal; /* pointer to IN_NOMINAL array */ u8 vid; u8 pwm_rr_en; u32 has_features; /* Register values */ u16 in[8]; u8 in_min[8]; u8 in_max[8]; s16 temp[3]; s8 temp_min[3]; s8 temp_max[3]; s8 temp_offset[3]; u8 config; u8 config2; u8 vrm; u16 fan[6]; u16 fan_min[6]; u8 fan_max[2]; u8 fan_opt[6]; u8 pwm[6]; u8 pwm_min[3]; u8 pwm_config[3]; u8 pwm_acz[3]; u8 pwm_freq[6]; u8 pwm_rr[2]; s8 zone_low[3]; s8 zone_abs[3]; u8 zone_hyst[2]; u32 alarms; }; /* Nominal voltage values */ static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300, 3300}; static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300, 3300}; static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300, 3300}; static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300, 3300, 1500}; #define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \ (type) == sch5027 ? IN_NOMINAL_SCH5027 : \ (type) == sch5127 ? IN_NOMINAL_SCH5127 : \ IN_NOMINAL_DME1737) /* * Voltage input * Voltage inputs have 16 bits resolution, limit values have 8 bits * resolution. */ static inline int IN_FROM_REG(int reg, int nominal, int res) { return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2)); } static inline int IN_TO_REG(long val, int nominal) { val = clamp_val(val, 0, 255 * nominal / 192); return DIV_ROUND_CLOSEST(val * 192, nominal); } /* * Temperature input * The register values represent temperatures in 2's complement notation from * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit * values have 8 bits resolution. */ static inline int TEMP_FROM_REG(int reg, int res) { return (reg * 1000) >> (res - 8); } static inline int TEMP_TO_REG(long val) { val = clamp_val(val, -128000, 127000); return DIV_ROUND_CLOSEST(val, 1000); } /* Temperature range */ static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000, 10000, 13333, 16000, 20000, 26666, 32000, 40000, 53333, 80000}; static inline int TEMP_RANGE_FROM_REG(int reg) { return TEMP_RANGE[(reg >> 4) & 0x0f]; } static int TEMP_RANGE_TO_REG(long val, int reg) { int i; for (i = 15; i > 0; i--) { if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2) break; } return (reg & 0x0f) | (i << 4); } /* * Temperature hysteresis * Register layout: * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0] * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx] */ static inline int TEMP_HYST_FROM_REG(int reg, int ix) { return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000; } static inline int TEMP_HYST_TO_REG(int temp, long hyst, int ix, int reg) { hyst = clamp_val(hyst, temp - 15000, temp); hyst = DIV_ROUND_CLOSEST(temp - hyst, 1000); return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4); } /* Fan input RPM */ static inline int FAN_FROM_REG(int reg, int tpc) { if (tpc) return tpc * reg; else return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg; } static inline int FAN_TO_REG(long val, int tpc) { if (tpc) { return clamp_val(val / tpc, 0, 0xffff); } else { return (val <= 0) ? 0xffff : clamp_val(90000 * 60 / val, 0, 0xfffe); } } /* * Fan TPC (tach pulse count) * Converts a register value to a TPC multiplier or returns 0 if the tachometer * is configured in legacy (non-tpc) mode */ static inline int FAN_TPC_FROM_REG(int reg) { return (reg & 0x20) ? 0 : 60 >> (reg & 0x03); } /* * Fan type * The type of a fan is expressed in number of pulses-per-revolution that it * emits */ static inline int FAN_TYPE_FROM_REG(int reg) { int edge = (reg >> 1) & 0x03; return (edge > 0) ? 1 << (edge - 1) : 0; } static inline int FAN_TYPE_TO_REG(long val, int reg) { int edge = (val == 4) ? 3 : val; return (reg & 0xf9) | (edge << 1); } /* Fan max RPM */ static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12, 0x11, 0x0f, 0x0e}; static int FAN_MAX_FROM_REG(int reg) { int i; for (i = 10; i > 0; i--) { if (reg == FAN_MAX[i]) break; } return 1000 + i * 500; } static int FAN_MAX_TO_REG(long val) { int i; for (i = 10; i > 0; i--) { if (val > (1000 + (i - 1) * 500)) break; } return FAN_MAX[i]; } /* * PWM enable * Register to enable mapping: * 000: 2 fan on zone 1 auto * 001: 2 fan on zone 2 auto * 010: 2 fan on zone 3 auto * 011: 0 fan full on * 100: -1 fan disabled * 101: 2 fan on hottest of zones 2,3 auto * 110: 2 fan on hottest of zones 1,2,3 auto * 111: 1 fan in manual mode */ static inline int PWM_EN_FROM_REG(int reg) { static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1}; return en[(reg >> 5) & 0x07]; } static inline int PWM_EN_TO_REG(int val, int reg) { int en = (val == 1) ? 7 : 3; return (reg & 0x1f) | ((en & 0x07) << 5); } /* * PWM auto channels zone * Register to auto channels zone mapping (ACZ is a bitfield with bit x * corresponding to zone x+1): * 000: 001 fan on zone 1 auto * 001: 010 fan on zone 2 auto * 010: 100 fan on zone 3 auto * 011: 000 fan full on * 100: 000 fan disabled * 101: 110 fan on hottest of zones 2,3 auto * 110: 111 fan on hottest of zones 1,2,3 auto * 111: 000 fan in manual mode */ static inline int PWM_ACZ_FROM_REG(int reg) { static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0}; return acz[(reg >> 5) & 0x07]; } static inline int PWM_ACZ_TO_REG(long val, int reg) { int acz = (val == 4) ? 2 : val - 1; return (reg & 0x1f) | ((acz & 0x07) << 5); } /* PWM frequency */ static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88, 15000, 20000, 30000, 25000, 0, 0, 0, 0}; static inline int PWM_FREQ_FROM_REG(int reg) { return PWM_FREQ[reg & 0x0f]; } static int PWM_FREQ_TO_REG(long val, int reg) { int i; /* the first two cases are special - stupid chip design! */ if (val > 27500) { i = 10; } else if (val > 22500) { i = 11; } else { for (i = 9; i > 0; i--) { if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2) break; } } return (reg & 0xf0) | i; } /* * PWM ramp rate * Register layout: * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0] * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0] */ static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5}; static inline int PWM_RR_FROM_REG(int reg, int ix) { int rr = (ix == 1) ? reg >> 4 : reg; return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0; } static int PWM_RR_TO_REG(long val, int ix, int reg) { int i; for (i = 0; i < 7; i++) { if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2) break; } return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i; } /* PWM ramp rate enable */ static inline int PWM_RR_EN_FROM_REG(int reg, int ix) { return PWM_RR_FROM_REG(reg, ix) ? 1 : 0; } static inline int PWM_RR_EN_TO_REG(long val, int ix, int reg) { int en = (ix == 1) ? 0x80 : 0x08; return val ? reg | en : reg & ~en; } /* * PWM min/off * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for * the register layout). */ static inline int PWM_OFF_FROM_REG(int reg, int ix) { return (reg >> (ix + 5)) & 0x01; } static inline int PWM_OFF_TO_REG(int val, int ix, int reg) { return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5)); } /* --------------------------------------------------------------------- * Device I/O access * * ISA access is performed through an index/data register pair and needs to * be protected by a mutex during runtime (not required for initialization). * We use data->update_lock for this and need to ensure that we acquire it * before calling dme1737_read or dme1737_write. * --------------------------------------------------------------------- */ static u8 dme1737_read(const struct dme1737_data *data, u8 reg) { struct i2c_client *client = data->client; s32 val; if (client) { /* I2C device */ val = i2c_smbus_read_byte_data(client, reg); if (val < 0) { dev_warn(&client->dev, "Read from register 0x%02x failed! %s\n", reg, DO_REPORT); } } else { /* ISA device */ outb(reg, data->addr); val = inb(data->addr + 1); } return val; } static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val) { struct i2c_client *client = data->client; s32 res = 0; if (client) { /* I2C device */ res = i2c_smbus_write_byte_data(client, reg, val); if (res < 0) { dev_warn(&client->dev, "Write to register 0x%02x failed! %s\n", reg, DO_REPORT); } } else { /* ISA device */ outb(reg, data->addr); outb(val, data->addr + 1); } return res; } static struct dme1737_data *dme1737_update_device(struct device *dev) { struct dme1737_data *data = dev_get_drvdata(dev); int ix; u8 lsb[6]; mutex_lock(&data->update_lock); /* Enable a Vbat monitoring cycle every 10 mins */ if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) { dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data, DME1737_REG_CONFIG) | 0x10); data->last_vbat = jiffies; } /* Sample register contents every 1 sec */ if (time_after(jiffies, data->last_update + HZ) || !data->valid) { if (data->has_features & HAS_VID) { data->vid = dme1737_read(data, DME1737_REG_VID) & 0x3f; } /* In (voltage) registers */ for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { /* * Voltage inputs are stored as 16 bit values even * though they have only 12 bits resolution. This is * to make it consistent with the temp inputs. */ if (ix == 7 && !(data->has_features & HAS_IN7)) continue; data->in[ix] = dme1737_read(data, DME1737_REG_IN(ix)) << 8; data->in_min[ix] = dme1737_read(data, DME1737_REG_IN_MIN(ix)); data->in_max[ix] = dme1737_read(data, DME1737_REG_IN_MAX(ix)); } /* Temp registers */ for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { /* * Temp inputs are stored as 16 bit values even * though they have only 12 bits resolution. This is * to take advantage of implicit conversions between * register values (2's complement) and temp values * (signed decimal). */ data->temp[ix] = dme1737_read(data, DME1737_REG_TEMP(ix)) << 8; data->temp_min[ix] = dme1737_read(data, DME1737_REG_TEMP_MIN(ix)); data->temp_max[ix] = dme1737_read(data, DME1737_REG_TEMP_MAX(ix)); if (data->has_features & HAS_TEMP_OFFSET) { data->temp_offset[ix] = dme1737_read(data, DME1737_REG_TEMP_OFFSET(ix)); } } /* * In and temp LSB registers * The LSBs are latched when the MSBs are read, so the order in * which the registers are read (MSB first, then LSB) is * important! */ for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) { if (ix == 5 && !(data->has_features & HAS_IN7)) continue; lsb[ix] = dme1737_read(data, DME1737_REG_IN_TEMP_LSB(ix)); } for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { if (ix == 7 && !(data->has_features & HAS_IN7)) continue; data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] << DME1737_REG_IN_LSB_SHL[ix]) & 0xf0; } for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] << DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0; } /* Fan registers */ for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) { /* * Skip reading registers if optional fans are not * present */ if (!(data->has_features & HAS_FAN(ix))) continue; data->fan[ix] = dme1737_read(data, DME1737_REG_FAN(ix)); data->fan[ix] |= dme1737_read(data, DME1737_REG_FAN(ix) + 1) << 8; data->fan_min[ix] = dme1737_read(data, DME1737_REG_FAN_MIN(ix)); data->fan_min[ix] |= dme1737_read(data, DME1737_REG_FAN_MIN(ix) + 1) << 8; data->fan_opt[ix] = dme1737_read(data, DME1737_REG_FAN_OPT(ix)); /* fan_max exists only for fan[5-6] */ if (ix > 3) { data->fan_max[ix - 4] = dme1737_read(data, DME1737_REG_FAN_MAX(ix)); } } /* PWM registers */ for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) { /* * Skip reading registers if optional PWMs are not * present */ if (!(data->has_features & HAS_PWM(ix))) continue; data->pwm[ix] = dme1737_read(data, DME1737_REG_PWM(ix)); data->pwm_freq[ix] = dme1737_read(data, DME1737_REG_PWM_FREQ(ix)); /* pwm_config and pwm_min exist only for pwm[1-3] */ if (ix < 3) { data->pwm_config[ix] = dme1737_read(data, DME1737_REG_PWM_CONFIG(ix)); data->pwm_min[ix] = dme1737_read(data, DME1737_REG_PWM_MIN(ix)); } } for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) { data->pwm_rr[ix] = dme1737_read(data, DME1737_REG_PWM_RR(ix)); } /* Thermal zone registers */ for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) { /* Skip reading registers if zone3 is not present */ if ((ix == 2) && !(data->has_features & HAS_ZONE3)) continue; /* sch5127 zone2 registers are special */ if ((ix == 1) && (data->type == sch5127)) { data->zone_low[1] = dme1737_read(data, DME1737_REG_ZONE_LOW(2)); data->zone_abs[1] = dme1737_read(data, DME1737_REG_ZONE_ABS(2)); } else { data->zone_low[ix] = dme1737_read(data, DME1737_REG_ZONE_LOW(ix)); data->zone_abs[ix] = dme1737_read(data, DME1737_REG_ZONE_ABS(ix)); } } if (data->has_features & HAS_ZONE_HYST) { for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) { data->zone_hyst[ix] = dme1737_read(data, DME1737_REG_ZONE_HYST(ix)); } } /* Alarm registers */ data->alarms = dme1737_read(data, DME1737_REG_ALARM1); /* * Bit 7 tells us if the other alarm registers are non-zero and * therefore also need to be read */ if (data->alarms & 0x80) { data->alarms |= dme1737_read(data, DME1737_REG_ALARM2) << 8; data->alarms |= dme1737_read(data, DME1737_REG_ALARM3) << 16; } /* * The ISA chips require explicit clearing of alarm bits. * Don't worry, an alarm will come back if the condition * that causes it still exists */ if (!data->client) { if (data->alarms & 0xff0000) dme1737_write(data, DME1737_REG_ALARM3, 0xff); if (data->alarms & 0xff00) dme1737_write(data, DME1737_REG_ALARM2, 0xff); if (data->alarms & 0xff) dme1737_write(data, DME1737_REG_ALARM1, 0xff); } data->last_update = jiffies; data->valid = true; } mutex_unlock(&data->update_lock); return data; } /* --------------------------------------------------------------------- * Voltage sysfs attributes * ix = [0-7] * --------------------------------------------------------------------- */ #define SYS_IN_INPUT 0 #define SYS_IN_MIN 1 #define SYS_IN_MAX 2 #define SYS_IN_ALARM 3 static ssize_t show_in(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dme1737_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SYS_IN_INPUT: res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16); break; case SYS_IN_MIN: res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8); break; case SYS_IN_MAX: res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8); break; case SYS_IN_ALARM: res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01; break; default: res = 0; dev_dbg(dev, "Unknown function %d.\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_in(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dme1737_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val; int err; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); switch (fn) { case SYS_IN_MIN: data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]); dme1737_write(data, DME1737_REG_IN_MIN(ix), data->in_min[ix]); break; case SYS_IN_MAX: data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]); dme1737_write(data, DME1737_REG_IN_MAX(ix), data->in_max[ix]); break; default: dev_dbg(dev, "Unknown function %d.\n", fn); } mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * Temperature sysfs attributes * ix = [0-2] * --------------------------------------------------------------------- */ #define SYS_TEMP_INPUT 0 #define SYS_TEMP_MIN 1 #define SYS_TEMP_MAX 2 #define SYS_TEMP_OFFSET 3 #define SYS_TEMP_ALARM 4 #define SYS_TEMP_FAULT 5 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dme1737_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SYS_TEMP_INPUT: res = TEMP_FROM_REG(data->temp[ix], 16); break; case SYS_TEMP_MIN: res = TEMP_FROM_REG(data->temp_min[ix], 8); break; case SYS_TEMP_MAX: res = TEMP_FROM_REG(data->temp_max[ix], 8); break; case SYS_TEMP_OFFSET: res = TEMP_FROM_REG(data->temp_offset[ix], 8); break; case SYS_TEMP_ALARM: res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01; break; case SYS_TEMP_FAULT: res = (((u16)data->temp[ix] & 0xff00) == 0x8000); break; default: res = 0; dev_dbg(dev, "Unknown function %d.\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_temp(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dme1737_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val; int err; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); switch (fn) { case SYS_TEMP_MIN: data->temp_min[ix] = TEMP_TO_REG(val); dme1737_write(data, DME1737_REG_TEMP_MIN(ix), data->temp_min[ix]); break; case SYS_TEMP_MAX: data->temp_max[ix] = TEMP_TO_REG(val); dme1737_write(data, DME1737_REG_TEMP_MAX(ix), data->temp_max[ix]); break; case SYS_TEMP_OFFSET: data->temp_offset[ix] = TEMP_TO_REG(val); dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix), data->temp_offset[ix]); break; default: dev_dbg(dev, "Unknown function %d.\n", fn); } mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * Zone sysfs attributes * ix = [0-2] * --------------------------------------------------------------------- */ #define SYS_ZONE_AUTO_CHANNELS_TEMP 0 #define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1 #define SYS_ZONE_AUTO_POINT1_TEMP 2 #define SYS_ZONE_AUTO_POINT2_TEMP 3 #define SYS_ZONE_AUTO_POINT3_TEMP 4 static ssize_t show_zone(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dme1737_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SYS_ZONE_AUTO_CHANNELS_TEMP: /* check config2 for non-standard temp-to-zone mapping */ if ((ix == 1) && (data->config2 & 0x02)) res = 4; else res = 1 << ix; break; case SYS_ZONE_AUTO_POINT1_TEMP_HYST: res = TEMP_FROM_REG(data->zone_low[ix], 8) - TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix); break; case SYS_ZONE_AUTO_POINT1_TEMP: res = TEMP_FROM_REG(data->zone_low[ix], 8); break; case SYS_ZONE_AUTO_POINT2_TEMP: /* pwm_freq holds the temp range bits in the upper nibble */ res = TEMP_FROM_REG(data->zone_low[ix], 8) + TEMP_RANGE_FROM_REG(data->pwm_freq[ix]); break; case SYS_ZONE_AUTO_POINT3_TEMP: res = TEMP_FROM_REG(data->zone_abs[ix], 8); break; default: res = 0; dev_dbg(dev, "Unknown function %d.\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_zone(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dme1737_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val; int temp; int err; u8 reg; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); switch (fn) { case SYS_ZONE_AUTO_POINT1_TEMP_HYST: /* Refresh the cache */ data->zone_low[ix] = dme1737_read(data, DME1737_REG_ZONE_LOW(ix)); /* Modify the temp hyst value */ temp = TEMP_FROM_REG(data->zone_low[ix], 8); reg = dme1737_read(data, DME1737_REG_ZONE_HYST(ix == 2)); data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(temp, val, ix, reg); dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2), data->zone_hyst[ix == 2]); break; case SYS_ZONE_AUTO_POINT1_TEMP: data->zone_low[ix] = TEMP_TO_REG(val); dme1737_write(data, DME1737_REG_ZONE_LOW(ix), data->zone_low[ix]); break; case SYS_ZONE_AUTO_POINT2_TEMP: /* Refresh the cache */ data->zone_low[ix] = dme1737_read(data, DME1737_REG_ZONE_LOW(ix)); /* * Modify the temp range value (which is stored in the upper * nibble of the pwm_freq register) */ temp = TEMP_FROM_REG(data->zone_low[ix], 8); val = clamp_val(val, temp, temp + 80000); reg = dme1737_read(data, DME1737_REG_PWM_FREQ(ix)); data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val - temp, reg); dme1737_write(data, DME1737_REG_PWM_FREQ(ix), data->pwm_freq[ix]); break; case SYS_ZONE_AUTO_POINT3_TEMP: data->zone_abs[ix] = TEMP_TO_REG(val); dme1737_write(data, DME1737_REG_ZONE_ABS(ix), data->zone_abs[ix]); break; default: dev_dbg(dev, "Unknown function %d.\n", fn); } mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * Fan sysfs attributes * ix = [0-5] * --------------------------------------------------------------------- */ #define SYS_FAN_INPUT 0 #define SYS_FAN_MIN 1 #define SYS_FAN_MAX 2 #define SYS_FAN_ALARM 3 #define SYS_FAN_TYPE 4 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dme1737_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SYS_FAN_INPUT: res = FAN_FROM_REG(data->fan[ix], ix < 4 ? 0 : FAN_TPC_FROM_REG(data->fan_opt[ix])); break; case SYS_FAN_MIN: res = FAN_FROM_REG(data->fan_min[ix], ix < 4 ? 0 : FAN_TPC_FROM_REG(data->fan_opt[ix])); break; case SYS_FAN_MAX: /* only valid for fan[5-6] */ res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]); break; case SYS_FAN_ALARM: res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01; break; case SYS_FAN_TYPE: /* only valid for fan[1-4] */ res = FAN_TYPE_FROM_REG(data->fan_opt[ix]); break; default: res = 0; dev_dbg(dev, "Unknown function %d.\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_fan(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dme1737_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val; int err; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); switch (fn) { case SYS_FAN_MIN: if (ix < 4) { data->fan_min[ix] = FAN_TO_REG(val, 0); } else { /* Refresh the cache */ data->fan_opt[ix] = dme1737_read(data, DME1737_REG_FAN_OPT(ix)); /* Modify the fan min value */ data->fan_min[ix] = FAN_TO_REG(val, FAN_TPC_FROM_REG(data->fan_opt[ix])); } dme1737_write(data, DME1737_REG_FAN_MIN(ix), data->fan_min[ix] & 0xff); dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1, data->fan_min[ix] >> 8); break; case SYS_FAN_MAX: /* Only valid for fan[5-6] */ data->fan_max[ix - 4] = FAN_MAX_TO_REG(val); dme1737_write(data, DME1737_REG_FAN_MAX(ix), data->fan_max[ix - 4]); break; case SYS_FAN_TYPE: /* Only valid for fan[1-4] */ if (!(val == 1 || val == 2 || val == 4)) { count = -EINVAL; dev_warn(dev, "Fan type value %ld not supported. Choose one of 1, 2, or 4.\n", val); goto exit; } data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data, DME1737_REG_FAN_OPT(ix))); dme1737_write(data, DME1737_REG_FAN_OPT(ix), data->fan_opt[ix]); break; default: dev_dbg(dev, "Unknown function %d.\n", fn); } exit: mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * PWM sysfs attributes * ix = [0-4] * --------------------------------------------------------------------- */ #define SYS_PWM 0 #define SYS_PWM_FREQ 1 #define SYS_PWM_ENABLE 2 #define SYS_PWM_RAMP_RATE 3 #define SYS_PWM_AUTO_CHANNELS_ZONE 4 #define SYS_PWM_AUTO_PWM_MIN 5 #define SYS_PWM_AUTO_POINT1_PWM 6 #define SYS_PWM_AUTO_POINT2_PWM 7 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dme1737_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SYS_PWM: if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0) res = 255; else res = data->pwm[ix]; break; case SYS_PWM_FREQ: res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]); break; case SYS_PWM_ENABLE: if (ix >= 3) res = 1; /* pwm[5-6] hard-wired to manual mode */ else res = PWM_EN_FROM_REG(data->pwm_config[ix]); break; case SYS_PWM_RAMP_RATE: /* Only valid for pwm[1-3] */ res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix); break; case SYS_PWM_AUTO_CHANNELS_ZONE: /* Only valid for pwm[1-3] */ if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) res = PWM_ACZ_FROM_REG(data->pwm_config[ix]); else res = data->pwm_acz[ix]; break; case SYS_PWM_AUTO_PWM_MIN: /* Only valid for pwm[1-3] */ if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix)) res = data->pwm_min[ix]; else res = 0; break; case SYS_PWM_AUTO_POINT1_PWM: /* Only valid for pwm[1-3] */ res = data->pwm_min[ix]; break; case SYS_PWM_AUTO_POINT2_PWM: /* Only valid for pwm[1-3] */ res = 255; /* hard-wired */ break; default: res = 0; dev_dbg(dev, "Unknown function %d.\n", fn); } return sprintf(buf, "%d\n", res); } static struct attribute *dme1737_pwm_chmod_attr[]; static void dme1737_chmod_file(struct device*, struct attribute*, umode_t); static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dme1737_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val; int err; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); switch (fn) { case SYS_PWM: data->pwm[ix] = clamp_val(val, 0, 255); dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]); break; case SYS_PWM_FREQ: data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data, DME1737_REG_PWM_FREQ(ix))); dme1737_write(data, DME1737_REG_PWM_FREQ(ix), data->pwm_freq[ix]); break; case SYS_PWM_ENABLE: /* Only valid for pwm[1-3] */ if (val < 0 || val > 2) { count = -EINVAL; dev_warn(dev, "PWM enable %ld not supported. Choose one of 0, 1, or 2.\n", val); goto exit; } /* Refresh the cache */ data->pwm_config[ix] = dme1737_read(data, DME1737_REG_PWM_CONFIG(ix)); if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) { /* Bail out if no change */ goto exit; } /* Do some housekeeping if we are currently in auto mode */ if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) { /* Save the current zone channel assignment */ data->pwm_acz[ix] = PWM_ACZ_FROM_REG( data->pwm_config[ix]); /* Save the current ramp rate state and disable it */ data->pwm_rr[ix > 0] = dme1737_read(data, DME1737_REG_PWM_RR(ix > 0)); data->pwm_rr_en &= ~(1 << ix); if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) { data->pwm_rr_en |= (1 << ix); data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix, data->pwm_rr[ix > 0]); dme1737_write(data, DME1737_REG_PWM_RR(ix > 0), data->pwm_rr[ix > 0]); } } /* Set the new PWM mode */ switch (val) { case 0: /* Change permissions of pwm[ix] to read-only */ dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix], S_IRUGO); /* Turn fan fully on */ data->pwm_config[ix] = PWM_EN_TO_REG(0, data->pwm_config[ix]); dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), data->pwm_config[ix]); break; case 1: /* Turn on manual mode */ data->pwm_config[ix] = PWM_EN_TO_REG(1, data->pwm_config[ix]); dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), data->pwm_config[ix]); /* Change permissions of pwm[ix] to read-writeable */ dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix], S_IRUGO | S_IWUSR); break; case 2: /* Change permissions of pwm[ix] to read-only */ dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix], S_IRUGO); /* * Turn on auto mode using the saved zone channel * assignment */ data->pwm_config[ix] = PWM_ACZ_TO_REG( data->pwm_acz[ix], data->pwm_config[ix]); dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), data->pwm_config[ix]); /* Enable PWM ramp rate if previously enabled */ if (data->pwm_rr_en & (1 << ix)) { data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix, dme1737_read(data, DME1737_REG_PWM_RR(ix > 0))); dme1737_write(data, DME1737_REG_PWM_RR(ix > 0), data->pwm_rr[ix > 0]); } break; } break; case SYS_PWM_RAMP_RATE: /* Only valid for pwm[1-3] */ /* Refresh the cache */ data->pwm_config[ix] = dme1737_read(data, DME1737_REG_PWM_CONFIG(ix)); data->pwm_rr[ix > 0] = dme1737_read(data, DME1737_REG_PWM_RR(ix > 0)); /* Set the ramp rate value */ if (val > 0) { data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix, data->pwm_rr[ix > 0]); } /* * Enable/disable the feature only if the associated PWM * output is in automatic mode. */ if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) { data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix, data->pwm_rr[ix > 0]); } dme1737_write(data, DME1737_REG_PWM_RR(ix > 0), data->pwm_rr[ix > 0]); break; case SYS_PWM_AUTO_CHANNELS_ZONE: /* Only valid for pwm[1-3] */ if (!(val == 1 || val == 2 || val == 4 || val == 6 || val == 7)) { count = -EINVAL; dev_warn(dev, "PWM auto channels zone %ld not supported. Choose one of 1, 2, 4, 6, " "or 7.\n", val); goto exit; } /* Refresh the cache */ data->pwm_config[ix] = dme1737_read(data, DME1737_REG_PWM_CONFIG(ix)); if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) { /* * PWM is already in auto mode so update the temp * channel assignment */ data->pwm_config[ix] = PWM_ACZ_TO_REG(val, data->pwm_config[ix]); dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), data->pwm_config[ix]); } else { /* * PWM is not in auto mode so we save the temp * channel assignment for later use */ data->pwm_acz[ix] = val; } break; case SYS_PWM_AUTO_PWM_MIN: /* Only valid for pwm[1-3] */ /* Refresh the cache */ data->pwm_min[ix] = dme1737_read(data, DME1737_REG_PWM_MIN(ix)); /* * There are only 2 values supported for the auto_pwm_min * value: 0 or auto_point1_pwm. So if the temperature drops * below the auto_point1_temp_hyst value, the fan either turns * off or runs at auto_point1_pwm duty-cycle. */ if (val > ((data->pwm_min[ix] + 1) / 2)) { data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix, dme1737_read(data, DME1737_REG_PWM_RR(0))); } else { data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix, dme1737_read(data, DME1737_REG_PWM_RR(0))); } dme1737_write(data, DME1737_REG_PWM_RR(0), data->pwm_rr[0]); break; case SYS_PWM_AUTO_POINT1_PWM: /* Only valid for pwm[1-3] */ data->pwm_min[ix] = clamp_val(val, 0, 255); dme1737_write(data, DME1737_REG_PWM_MIN(ix), data->pwm_min[ix]); break; default: dev_dbg(dev, "Unknown function %d.\n", fn); } exit: mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * Miscellaneous sysfs attributes * --------------------------------------------------------------------- */ static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, char *buf) { struct i2c_client *client = to_i2c_client(dev); struct dme1737_data *data = i2c_get_clientdata(client); return sprintf(buf, "%d\n", data->vrm); } static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dme1737_data *data = dev_get_drvdata(dev); unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; if (val > 255) return -EINVAL; data->vrm = val; return count; } static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dme1737_update_device(dev); return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); } static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dev_get_drvdata(dev); return sprintf(buf, "%s\n", data->name); } /* --------------------------------------------------------------------- * Sysfs device attribute defines and structs * --------------------------------------------------------------------- */ /* Voltages 0-7 */ #define SENSOR_DEVICE_ATTR_IN(ix) \ static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \ show_in, NULL, SYS_IN_INPUT, ix); \ static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \ show_in, set_in, SYS_IN_MIN, ix); \ static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \ show_in, set_in, SYS_IN_MAX, ix); \ static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \ show_in, NULL, SYS_IN_ALARM, ix) SENSOR_DEVICE_ATTR_IN(0); SENSOR_DEVICE_ATTR_IN(1); SENSOR_DEVICE_ATTR_IN(2); SENSOR_DEVICE_ATTR_IN(3); SENSOR_DEVICE_ATTR_IN(4); SENSOR_DEVICE_ATTR_IN(5); SENSOR_DEVICE_ATTR_IN(6); SENSOR_DEVICE_ATTR_IN(7); /* Temperatures 1-3 */ #define SENSOR_DEVICE_ATTR_TEMP(ix) \ static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \ show_temp, NULL, SYS_TEMP_INPUT, ix-1); \ static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \ show_temp, set_temp, SYS_TEMP_MIN, ix-1); \ static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \ show_temp, set_temp, SYS_TEMP_MAX, ix-1); \ static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \ show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \ static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \ show_temp, NULL, SYS_TEMP_ALARM, ix-1); \ static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \ show_temp, NULL, SYS_TEMP_FAULT, ix-1) SENSOR_DEVICE_ATTR_TEMP(1); SENSOR_DEVICE_ATTR_TEMP(2); SENSOR_DEVICE_ATTR_TEMP(3); /* Zones 1-3 */ #define SENSOR_DEVICE_ATTR_ZONE(ix) \ static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \ show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \ static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \ show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \ static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \ show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \ static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \ show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \ static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \ show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1) SENSOR_DEVICE_ATTR_ZONE(1); SENSOR_DEVICE_ATTR_ZONE(2); SENSOR_DEVICE_ATTR_ZONE(3); /* Fans 1-4 */ #define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \ static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \ show_fan, NULL, SYS_FAN_INPUT, ix-1); \ static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \ show_fan, set_fan, SYS_FAN_MIN, ix-1); \ static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \ show_fan, NULL, SYS_FAN_ALARM, ix-1); \ static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \ show_fan, set_fan, SYS_FAN_TYPE, ix-1) SENSOR_DEVICE_ATTR_FAN_1TO4(1); SENSOR_DEVICE_ATTR_FAN_1TO4(2); SENSOR_DEVICE_ATTR_FAN_1TO4(3); SENSOR_DEVICE_ATTR_FAN_1TO4(4); /* Fans 5-6 */ #define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \ static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \ show_fan, NULL, SYS_FAN_INPUT, ix-1); \ static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \ show_fan, set_fan, SYS_FAN_MIN, ix-1); \ static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \ show_fan, NULL, SYS_FAN_ALARM, ix-1); \ static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \ show_fan, set_fan, SYS_FAN_MAX, ix-1) SENSOR_DEVICE_ATTR_FAN_5TO6(5); SENSOR_DEVICE_ATTR_FAN_5TO6(6); /* PWMs 1-3 */ #define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \ static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \ show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1) SENSOR_DEVICE_ATTR_PWM_1TO3(1); SENSOR_DEVICE_ATTR_PWM_1TO3(2); SENSOR_DEVICE_ATTR_PWM_1TO3(3); /* PWMs 5-6 */ #define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \ static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \ show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \ show_pwm, NULL, SYS_PWM_ENABLE, ix-1) SENSOR_DEVICE_ATTR_PWM_5TO6(5); SENSOR_DEVICE_ATTR_PWM_5TO6(6); /* Misc */ static DEVICE_ATTR_RW(vrm); static DEVICE_ATTR_RO(cpu0_vid); static DEVICE_ATTR_RO(name); /* for ISA devices */ /* * This struct holds all the attributes that are always present and need to be * created unconditionally. The attributes that need modification of their * permissions are created read-only and write permissions are added or removed * on the fly when required */ static struct attribute *dme1737_attr[] = { /* Voltages */ &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, &sensor_dev_attr_in0_alarm.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_min.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in2_min.dev_attr.attr, &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in3_min.dev_attr.attr, &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &sensor_dev_attr_in4_input.dev_attr.attr, &sensor_dev_attr_in4_min.dev_attr.attr, &sensor_dev_attr_in4_max.dev_attr.attr, &sensor_dev_attr_in4_alarm.dev_attr.attr, &sensor_dev_attr_in5_input.dev_attr.attr, &sensor_dev_attr_in5_min.dev_attr.attr, &sensor_dev_attr_in5_max.dev_attr.attr, &sensor_dev_attr_in5_alarm.dev_attr.attr, &sensor_dev_attr_in6_input.dev_attr.attr, &sensor_dev_attr_in6_min.dev_attr.attr, &sensor_dev_attr_in6_max.dev_attr.attr, &sensor_dev_attr_in6_alarm.dev_attr.attr, /* Temperatures */ &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_min.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp1_alarm.dev_attr.attr, &sensor_dev_attr_temp1_fault.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp2_min.dev_attr.attr, &sensor_dev_attr_temp2_max.dev_attr.attr, &sensor_dev_attr_temp2_alarm.dev_attr.attr, &sensor_dev_attr_temp2_fault.dev_attr.attr, &sensor_dev_attr_temp3_input.dev_attr.attr, &sensor_dev_attr_temp3_min.dev_attr.attr, &sensor_dev_attr_temp3_max.dev_attr.attr, &sensor_dev_attr_temp3_alarm.dev_attr.attr, &sensor_dev_attr_temp3_fault.dev_attr.attr, /* Zones */ &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr, &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr, &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr, &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr, &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr, &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr, &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr, &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr, NULL }; static const struct attribute_group dme1737_group = { .attrs = dme1737_attr, }; /* * The following struct holds temp offset attributes, which are not available * in all chips. The following chips support them: * DME1737, SCH311x */ static struct attribute *dme1737_temp_offset_attr[] = { &sensor_dev_attr_temp1_offset.dev_attr.attr, &sensor_dev_attr_temp2_offset.dev_attr.attr, &sensor_dev_attr_temp3_offset.dev_attr.attr, NULL }; static const struct attribute_group dme1737_temp_offset_group = { .attrs = dme1737_temp_offset_attr, }; /* * The following struct holds VID related attributes, which are not available * in all chips. The following chips support them: * DME1737 */ static struct attribute *dme1737_vid_attr[] = { &dev_attr_vrm.attr, &dev_attr_cpu0_vid.attr, NULL }; static const struct attribute_group dme1737_vid_group = { .attrs = dme1737_vid_attr, }; /* * The following struct holds temp zone 3 related attributes, which are not * available in all chips. The following chips support them: * DME1737, SCH311x, SCH5027 */ static struct attribute *dme1737_zone3_attr[] = { &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr, &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr, &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr, &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr, NULL }; static const struct attribute_group dme1737_zone3_group = { .attrs = dme1737_zone3_attr, }; /* * The following struct holds temp zone hysteresis related attributes, which * are not available in all chips. The following chips support them: * DME1737, SCH311x */ static struct attribute *dme1737_zone_hyst_attr[] = { &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr, &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr, &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr, NULL }; static const struct attribute_group dme1737_zone_hyst_group = { .attrs = dme1737_zone_hyst_attr, }; /* * The following struct holds voltage in7 related attributes, which * are not available in all chips. The following chips support them: * SCH5127 */ static struct attribute *dme1737_in7_attr[] = { &sensor_dev_attr_in7_input.dev_attr.attr, &sensor_dev_attr_in7_min.dev_attr.attr, &sensor_dev_attr_in7_max.dev_attr.attr, &sensor_dev_attr_in7_alarm.dev_attr.attr, NULL }; static const struct attribute_group dme1737_in7_group = { .attrs = dme1737_in7_attr, }; /* * The following structs hold the PWM attributes, some of which are optional. * Their creation depends on the chip configuration which is determined during * module load. */ static struct attribute *dme1737_pwm1_attr[] = { &sensor_dev_attr_pwm1.dev_attr.attr, &sensor_dev_attr_pwm1_freq.dev_attr.attr, &sensor_dev_attr_pwm1_enable.dev_attr.attr, &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr, &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm2_attr[] = { &sensor_dev_attr_pwm2.dev_attr.attr, &sensor_dev_attr_pwm2_freq.dev_attr.attr, &sensor_dev_attr_pwm2_enable.dev_attr.attr, &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr, &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr, &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm3_attr[] = { &sensor_dev_attr_pwm3.dev_attr.attr, &sensor_dev_attr_pwm3_freq.dev_attr.attr, &sensor_dev_attr_pwm3_enable.dev_attr.attr, &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr, &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr, &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm5_attr[] = { &sensor_dev_attr_pwm5.dev_attr.attr, &sensor_dev_attr_pwm5_freq.dev_attr.attr, &sensor_dev_attr_pwm5_enable.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm6_attr[] = { &sensor_dev_attr_pwm6.dev_attr.attr, &sensor_dev_attr_pwm6_freq.dev_attr.attr, &sensor_dev_attr_pwm6_enable.dev_attr.attr, NULL }; static const struct attribute_group dme1737_pwm_group[] = { { .attrs = dme1737_pwm1_attr }, { .attrs = dme1737_pwm2_attr }, { .attrs = dme1737_pwm3_attr }, { .attrs = NULL }, { .attrs = dme1737_pwm5_attr }, { .attrs = dme1737_pwm6_attr }, }; /* * The following struct holds auto PWM min attributes, which are not available * in all chips. Their creation depends on the chip type which is determined * during module load. */ static struct attribute *dme1737_auto_pwm_min_attr[] = { &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, }; /* * The following structs hold the fan attributes, some of which are optional. * Their creation depends on the chip configuration which is determined during * module load. */ static struct attribute *dme1737_fan1_attr[] = { &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr, &sensor_dev_attr_fan1_type.dev_attr.attr, NULL }; static struct attribute *dme1737_fan2_attr[] = { &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, &sensor_dev_attr_fan2_type.dev_attr.attr, NULL }; static struct attribute *dme1737_fan3_attr[] = { &sensor_dev_attr_fan3_input.dev_attr.attr, &sensor_dev_attr_fan3_min.dev_attr.attr, &sensor_dev_attr_fan3_alarm.dev_attr.attr, &sensor_dev_attr_fan3_type.dev_attr.attr, NULL }; static struct attribute *dme1737_fan4_attr[] = { &sensor_dev_attr_fan4_input.dev_attr.attr, &sensor_dev_attr_fan4_min.dev_attr.attr, &sensor_dev_attr_fan4_alarm.dev_attr.attr, &sensor_dev_attr_fan4_type.dev_attr.attr, NULL }; static struct attribute *dme1737_fan5_attr[] = { &sensor_dev_attr_fan5_input.dev_attr.attr, &sensor_dev_attr_fan5_min.dev_attr.attr, &sensor_dev_attr_fan5_alarm.dev_attr.attr, &sensor_dev_attr_fan5_max.dev_attr.attr, NULL }; static struct attribute *dme1737_fan6_attr[] = { &sensor_dev_attr_fan6_input.dev_attr.attr, &sensor_dev_attr_fan6_min.dev_attr.attr, &sensor_dev_attr_fan6_alarm.dev_attr.attr, &sensor_dev_attr_fan6_max.dev_attr.attr, NULL }; static const struct attribute_group dme1737_fan_group[] = { { .attrs = dme1737_fan1_attr }, { .attrs = dme1737_fan2_attr }, { .attrs = dme1737_fan3_attr }, { .attrs = dme1737_fan4_attr }, { .attrs = dme1737_fan5_attr }, { .attrs = dme1737_fan6_attr }, }; /* * The permissions of the following zone attributes are changed to read- * writeable if the chip is *not* locked. Otherwise they stay read-only. */ static struct attribute *dme1737_zone_chmod_attr[] = { &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr, &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr, &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr, &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr, &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr, &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr, NULL }; static const struct attribute_group dme1737_zone_chmod_group = { .attrs = dme1737_zone_chmod_attr, }; /* * The permissions of the following zone 3 attributes are changed to read- * writeable if the chip is *not* locked. Otherwise they stay read-only. */ static struct attribute *dme1737_zone3_chmod_attr[] = { &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr, &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr, &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr, NULL }; static const struct attribute_group dme1737_zone3_chmod_group = { .attrs = dme1737_zone3_chmod_attr, }; /* * The permissions of the following PWM attributes are changed to read- * writeable if the chip is *not* locked and the respective PWM is available. * Otherwise they stay read-only. */ static struct attribute *dme1737_pwm1_chmod_attr[] = { &sensor_dev_attr_pwm1_freq.dev_attr.attr, &sensor_dev_attr_pwm1_enable.dev_attr.attr, &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr, &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr, &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm2_chmod_attr[] = { &sensor_dev_attr_pwm2_freq.dev_attr.attr, &sensor_dev_attr_pwm2_enable.dev_attr.attr, &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr, &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr, &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm3_chmod_attr[] = { &sensor_dev_attr_pwm3_freq.dev_attr.attr, &sensor_dev_attr_pwm3_enable.dev_attr.attr, &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr, &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr, &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm5_chmod_attr[] = { &sensor_dev_attr_pwm5.dev_attr.attr, &sensor_dev_attr_pwm5_freq.dev_attr.attr, NULL }; static struct attribute *dme1737_pwm6_chmod_attr[] = { &sensor_dev_attr_pwm6.dev_attr.attr, &sensor_dev_attr_pwm6_freq.dev_attr.attr, NULL }; static const struct attribute_group dme1737_pwm_chmod_group[] = { { .attrs = dme1737_pwm1_chmod_attr }, { .attrs = dme1737_pwm2_chmod_attr }, { .attrs = dme1737_pwm3_chmod_attr }, { .attrs = NULL }, { .attrs = dme1737_pwm5_chmod_attr }, { .attrs = dme1737_pwm6_chmod_attr }, }; /* * Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the * chip is not locked. Otherwise they are read-only. */ static struct attribute *dme1737_pwm_chmod_attr[] = { &sensor_dev_attr_pwm1.dev_attr.attr, &sensor_dev_attr_pwm2.dev_attr.attr, &sensor_dev_attr_pwm3.dev_attr.attr, }; /* --------------------------------------------------------------------- * Super-IO functions * --------------------------------------------------------------------- */ static inline void dme1737_sio_enter(int sio_cip) { outb(0x55, sio_cip); } static inline void dme1737_sio_exit(int sio_cip) { outb(0xaa, sio_cip); } static inline int dme1737_sio_inb(int sio_cip, int reg) { outb(reg, sio_cip); return inb(sio_cip + 1); } static inline void dme1737_sio_outb(int sio_cip, int reg, int val) { outb(reg, sio_cip); outb(val, sio_cip + 1); } /* --------------------------------------------------------------------- * Device initialization * --------------------------------------------------------------------- */ static int dme1737_i2c_get_features(int, struct dme1737_data*); static void dme1737_chmod_file(struct device *dev, struct attribute *attr, umode_t mode) { if (sysfs_chmod_file(&dev->kobj, attr, mode)) { dev_warn(dev, "Failed to change permissions of %s.\n", attr->name); } } static void dme1737_chmod_group(struct device *dev, const struct attribute_group *group, umode_t mode) { struct attribute **attr; for (attr = group->attrs; *attr; attr++) dme1737_chmod_file(dev, *attr, mode); } static void dme1737_remove_files(struct device *dev) { struct dme1737_data *data = dev_get_drvdata(dev); int ix; for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) { if (data->has_features & HAS_FAN(ix)) { sysfs_remove_group(&dev->kobj, &dme1737_fan_group[ix]); } } for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) { if (data->has_features & HAS_PWM(ix)) { sysfs_remove_group(&dev->kobj, &dme1737_pwm_group[ix]); if ((data->has_features & HAS_PWM_MIN) && ix < 3) { sysfs_remove_file(&dev->kobj, dme1737_auto_pwm_min_attr[ix]); } } } if (data->has_features & HAS_TEMP_OFFSET) sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group); if (data->has_features & HAS_VID) sysfs_remove_group(&dev->kobj, &dme1737_vid_group); if (data->has_features & HAS_ZONE3) sysfs_remove_group(&dev->kobj, &dme1737_zone3_group); if (data->has_features & HAS_ZONE_HYST) sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group); if (data->has_features & HAS_IN7) sysfs_remove_group(&dev->kobj, &dme1737_in7_group); sysfs_remove_group(&dev->kobj, &dme1737_group); if (!data->client) sysfs_remove_file(&dev->kobj, &dev_attr_name.attr); } static int dme1737_create_files(struct device *dev) { struct dme1737_data *data = dev_get_drvdata(dev); int err, ix; /* Create a name attribute for ISA devices */ if (!data->client) { err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr); if (err) goto exit; } /* Create standard sysfs attributes */ err = sysfs_create_group(&dev->kobj, &dme1737_group); if (err) goto exit_remove; /* Create chip-dependent sysfs attributes */ if (data->has_features & HAS_TEMP_OFFSET) { err = sysfs_create_group(&dev->kobj, &dme1737_temp_offset_group); if (err) goto exit_remove; } if (data->has_features & HAS_VID) { err = sysfs_create_group(&dev->kobj, &dme1737_vid_group); if (err) goto exit_remove; } if (data->has_features & HAS_ZONE3) { err = sysfs_create_group(&dev->kobj, &dme1737_zone3_group); if (err) goto exit_remove; } if (data->has_features & HAS_ZONE_HYST) { err = sysfs_create_group(&dev->kobj, &dme1737_zone_hyst_group); if (err) goto exit_remove; } if (data->has_features & HAS_IN7) { err = sysfs_create_group(&dev->kobj, &dme1737_in7_group); if (err) goto exit_remove; } /* Create fan sysfs attributes */ for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) { if (data->has_features & HAS_FAN(ix)) { err = sysfs_create_group(&dev->kobj, &dme1737_fan_group[ix]); if (err) goto exit_remove; } } /* Create PWM sysfs attributes */ for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) { if (data->has_features & HAS_PWM(ix)) { err = sysfs_create_group(&dev->kobj, &dme1737_pwm_group[ix]); if (err) goto exit_remove; if ((data->has_features & HAS_PWM_MIN) && (ix < 3)) { err = sysfs_create_file(&dev->kobj, dme1737_auto_pwm_min_attr[ix]); if (err) goto exit_remove; } } } /* * Inform if the device is locked. Otherwise change the permissions of * selected attributes from read-only to read-writeable. */ if (data->config & 0x02) { dev_info(dev, "Device is locked. Some attributes will be read-only.\n"); } else { /* Change permissions of zone sysfs attributes */ dme1737_chmod_group(dev, &dme1737_zone_chmod_group, S_IRUGO | S_IWUSR); /* Change permissions of chip-dependent sysfs attributes */ if (data->has_features & HAS_TEMP_OFFSET) { dme1737_chmod_group(dev, &dme1737_temp_offset_group, S_IRUGO | S_IWUSR); } if (data->has_features & HAS_ZONE3) { dme1737_chmod_group(dev, &dme1737_zone3_chmod_group, S_IRUGO | S_IWUSR); } if (data->has_features & HAS_ZONE_HYST) { dme1737_chmod_group(dev, &dme1737_zone_hyst_group, S_IRUGO | S_IWUSR); } /* Change permissions of PWM sysfs attributes */ for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) { if (data->has_features & HAS_PWM(ix)) { dme1737_chmod_group(dev, &dme1737_pwm_chmod_group[ix], S_IRUGO | S_IWUSR); if ((data->has_features & HAS_PWM_MIN) && ix < 3) { dme1737_chmod_file(dev, dme1737_auto_pwm_min_attr[ix], S_IRUGO | S_IWUSR); } } } /* Change permissions of pwm[1-3] if in manual mode */ for (ix = 0; ix < 3; ix++) { if ((data->has_features & HAS_PWM(ix)) && (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) { dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix], S_IRUGO | S_IWUSR); } } } return 0; exit_remove: dme1737_remove_files(dev); exit: return err; } static int dme1737_init_device(struct device *dev) { struct dme1737_data *data = dev_get_drvdata(dev); struct i2c_client *client = data->client; int ix; u8 reg; /* Point to the right nominal voltages array */ data->in_nominal = IN_NOMINAL(data->type); data->config = dme1737_read(data, DME1737_REG_CONFIG); /* Inform if part is not monitoring/started */ if (!(data->config & 0x01)) { if (!force_start) { dev_err(dev, "Device is not monitoring. Use the force_start load parameter to override.\n"); return -EFAULT; } /* Force monitoring */ data->config |= 0x01; dme1737_write(data, DME1737_REG_CONFIG, data->config); } /* Inform if part is not ready */ if (!(data->config & 0x04)) { dev_err(dev, "Device is not ready.\n"); return -EFAULT; } /* * Determine which optional fan and pwm features are enabled (only * valid for I2C devices) */ if (client) { /* I2C chip */ data->config2 = dme1737_read(data, DME1737_REG_CONFIG2); /* Check if optional fan3 input is enabled */ if (data->config2 & 0x04) data->has_features |= HAS_FAN(2); /* * Fan4 and pwm3 are only available if the client's I2C address * is the default 0x2e. Otherwise the I/Os associated with * these functions are used for addr enable/select. */ if (client->addr == 0x2e) data->has_features |= HAS_FAN(3) | HAS_PWM(2); /* * Determine which of the optional fan[5-6] and pwm[5-6] * features are enabled. For this, we need to query the runtime * registers through the Super-IO LPC interface. Try both * config ports 0x2e and 0x4e. */ if (dme1737_i2c_get_features(0x2e, data) && dme1737_i2c_get_features(0x4e, data)) { dev_warn(dev, "Failed to query Super-IO for optional features.\n"); } } /* Fan[1-2] and pwm[1-2] are present in all chips */ data->has_features |= HAS_FAN(0) | HAS_FAN(1) | HAS_PWM(0) | HAS_PWM(1); /* Chip-dependent features */ switch (data->type) { case dme1737: data->has_features |= HAS_TEMP_OFFSET | HAS_VID | HAS_ZONE3 | HAS_ZONE_HYST | HAS_PWM_MIN; break; case sch311x: data->has_features |= HAS_TEMP_OFFSET | HAS_ZONE3 | HAS_ZONE_HYST | HAS_PWM_MIN | HAS_FAN(2) | HAS_PWM(2); break; case sch5027: data->has_features |= HAS_ZONE3; break; case sch5127: data->has_features |= HAS_FAN(2) | HAS_PWM(2) | HAS_IN7; break; default: break; } dev_info(dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n", (data->has_features & HAS_PWM(2)) ? "yes" : "no", (data->has_features & HAS_PWM(4)) ? "yes" : "no", (data->has_features & HAS_PWM(5)) ? "yes" : "no", (data->has_features & HAS_FAN(2)) ? "yes" : "no", (data->has_features & HAS_FAN(3)) ? "yes" : "no", (data->has_features & HAS_FAN(4)) ? "yes" : "no", (data->has_features & HAS_FAN(5)) ? "yes" : "no"); reg = dme1737_read(data, DME1737_REG_TACH_PWM); /* Inform if fan-to-pwm mapping differs from the default */ if (client && reg != 0xa4) { /* I2C chip */ dev_warn(dev, "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, fan4->pwm%d. %s\n", (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1, ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1, DO_REPORT); } else if (!client && reg != 0x24) { /* ISA chip */ dev_warn(dev, "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. %s\n", (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1, ((reg >> 4) & 0x03) + 1, DO_REPORT); } /* * Switch pwm[1-3] to manual mode if they are currently disabled and * set the duty-cycles to 0% (which is identical to the PWMs being * disabled). */ if (!(data->config & 0x02)) { for (ix = 0; ix < 3; ix++) { data->pwm_config[ix] = dme1737_read(data, DME1737_REG_PWM_CONFIG(ix)); if ((data->has_features & HAS_PWM(ix)) && (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) { dev_info(dev, "Switching pwm%d to manual mode.\n", ix + 1); data->pwm_config[ix] = PWM_EN_TO_REG(1, data->pwm_config[ix]); dme1737_write(data, DME1737_REG_PWM(ix), 0); dme1737_write(data, DME1737_REG_PWM_CONFIG(ix), data->pwm_config[ix]); } } } /* Initialize the default PWM auto channels zone (acz) assignments */ data->pwm_acz[0] = 1; /* pwm1 -> zone1 */ data->pwm_acz[1] = 2; /* pwm2 -> zone2 */ data->pwm_acz[2] = 4; /* pwm3 -> zone3 */ /* Set VRM */ if (data->has_features & HAS_VID) data->vrm = vid_which_vrm(); return 0; } /* --------------------------------------------------------------------- * I2C device detection and registration * --------------------------------------------------------------------- */ static struct i2c_driver dme1737_i2c_driver; static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data) { int err = 0, reg; u16 addr; dme1737_sio_enter(sio_cip); /* * Check device ID * We currently know about two kinds of DME1737 and SCH5027. */ reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20); if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 || reg == SCH5027_ID)) { err = -ENODEV; goto exit; } /* Select logical device A (runtime registers) */ dme1737_sio_outb(sio_cip, 0x07, 0x0a); /* Get the base address of the runtime registers */ addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) | dme1737_sio_inb(sio_cip, 0x61); if (!addr) { err = -ENODEV; goto exit; } /* * Read the runtime registers to determine which optional features * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set * to '10' if the respective feature is enabled. */ if ((inb(addr + 0x43) & 0x0c) == 0x08) /* fan6 */ data->has_features |= HAS_FAN(5); if ((inb(addr + 0x44) & 0x0c) == 0x08) /* pwm6 */ data->has_features |= HAS_PWM(5); if ((inb(addr + 0x45) & 0x0c) == 0x08) /* fan5 */ data->has_features |= HAS_FAN(4); if ((inb(addr + 0x46) & 0x0c) == 0x08) /* pwm5 */ data->has_features |= HAS_PWM(4); exit: dme1737_sio_exit(sio_cip); return err; } /* Return 0 if detection is successful, -ENODEV otherwise */ static int dme1737_i2c_detect(struct i2c_client *client, struct i2c_board_info *info) { struct i2c_adapter *adapter = client->adapter; struct device *dev = &adapter->dev; u8 company, verstep = 0; const char *name; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY); verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP); if (company == DME1737_COMPANY_SMSC && verstep == SCH5027_VERSTEP) { name = "sch5027"; } else if (company == DME1737_COMPANY_SMSC && (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) { name = "dme1737"; } else { return -ENODEV; } dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n", verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737", client->addr, verstep); strscpy(info->type, name, I2C_NAME_SIZE); return 0; } static const struct i2c_device_id dme1737_id[]; static int dme1737_i2c_probe(struct i2c_client *client) { struct dme1737_data *data; struct device *dev = &client->dev; int err; data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL); if (!data) return -ENOMEM; i2c_set_clientdata(client, data); data->type = i2c_match_id(dme1737_id, client)->driver_data; data->client = client; data->name = client->name; mutex_init(&data->update_lock); /* Initialize the DME1737 chip */ err = dme1737_init_device(dev); if (err) { dev_err(dev, "Failed to initialize device.\n"); return err; } /* Create sysfs files */ err = dme1737_create_files(dev); if (err) { dev_err(dev, "Failed to create sysfs files.\n"); return err; } /* Register device */ data->hwmon_dev = hwmon_device_register(dev); if (IS_ERR(data->hwmon_dev)) { dev_err(dev, "Failed to register device.\n"); err = PTR_ERR(data->hwmon_dev); goto exit_remove; } return 0; exit_remove: dme1737_remove_files(dev); return err; } static void dme1737_i2c_remove(struct i2c_client *client) { struct dme1737_data *data = i2c_get_clientdata(client); hwmon_device_unregister(data->hwmon_dev); dme1737_remove_files(&client->dev); } static const struct i2c_device_id dme1737_id[] = { { "dme1737", dme1737 }, { "sch5027", sch5027 }, { } }; MODULE_DEVICE_TABLE(i2c, dme1737_id); static struct i2c_driver dme1737_i2c_driver = { .class = I2C_CLASS_HWMON, .driver = { .name = "dme1737", }, .probe = dme1737_i2c_probe, .remove = dme1737_i2c_remove, .id_table = dme1737_id, .detect = dme1737_i2c_detect, .address_list = normal_i2c, }; /* --------------------------------------------------------------------- * ISA device detection and registration * --------------------------------------------------------------------- */ static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr) { int err = 0, reg; unsigned short base_addr; dme1737_sio_enter(sio_cip); /* * Check device ID * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127 */ reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20); if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID || reg == SCH5127_ID)) { err = -ENODEV; goto exit; } /* Select logical device A (runtime registers) */ dme1737_sio_outb(sio_cip, 0x07, 0x0a); /* Get the base address of the runtime registers */ base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) | dme1737_sio_inb(sio_cip, 0x61); if (!base_addr) { pr_err("Base address not set\n"); err = -ENODEV; goto exit; } /* * Access to the hwmon registers is through an index/data register * pair located at offset 0x70/0x71. */ *addr = base_addr + 0x70; exit: dme1737_sio_exit(sio_cip); return err; } static int __init dme1737_isa_device_add(unsigned short addr) { struct resource res = { .start = addr, .end = addr + DME1737_EXTENT - 1, .name = "dme1737", .flags = IORESOURCE_IO, }; int err; err = acpi_check_resource_conflict(&res); if (err) goto exit; pdev = platform_device_alloc("dme1737", addr); if (!pdev) { pr_err("Failed to allocate device\n"); err = -ENOMEM; goto exit; } err = platform_device_add_resources(pdev, &res, 1); if (err) { pr_err("Failed to add device resource (err = %d)\n", err); goto exit_device_put; } err = platform_device_add(pdev); if (err) { pr_err("Failed to add device (err = %d)\n", err); goto exit_device_put; } return 0; exit_device_put: platform_device_put(pdev); pdev = NULL; exit: return err; } static int dme1737_isa_probe(struct platform_device *pdev) { u8 company, device; struct resource *res; struct dme1737_data *data; struct device *dev = &pdev->dev; int err; res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) { dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n", (unsigned short)res->start, (unsigned short)res->start + DME1737_EXTENT - 1); return -EBUSY; } data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL); if (!data) return -ENOMEM; data->addr = res->start; platform_set_drvdata(pdev, data); /* Skip chip detection if module is loaded with force_id parameter */ switch (force_id) { case SCH3112_ID: case SCH3114_ID: case SCH3116_ID: data->type = sch311x; break; case SCH5127_ID: data->type = sch5127; break; default: company = dme1737_read(data, DME1737_REG_COMPANY); device = dme1737_read(data, DME1737_REG_DEVICE); if ((company == DME1737_COMPANY_SMSC) && (device == SCH311X_DEVICE)) { data->type = sch311x; } else if ((company == DME1737_COMPANY_SMSC) && (device == SCH5127_DEVICE)) { data->type = sch5127; } else { return -ENODEV; } } if (data->type == sch5127) data->name = "sch5127"; else data->name = "sch311x"; /* Initialize the mutex */ mutex_init(&data->update_lock); dev_info(dev, "Found a %s chip at 0x%04x\n", data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr); /* Initialize the chip */ err = dme1737_init_device(dev); if (err) { dev_err(dev, "Failed to initialize device.\n"); return err; } /* Create sysfs files */ err = dme1737_create_files(dev); if (err) { dev_err(dev, "Failed to create sysfs files.\n"); return err; } /* Register device */ data->hwmon_dev = hwmon_device_register(dev); if (IS_ERR(data->hwmon_dev)) { dev_err(dev, "Failed to register device.\n"); err = PTR_ERR(data->hwmon_dev); goto exit_remove_files; } return 0; exit_remove_files: dme1737_remove_files(dev); return err; } static void dme1737_isa_remove(struct platform_device *pdev) { struct dme1737_data *data = platform_get_drvdata(pdev); hwmon_device_unregister(data->hwmon_dev); dme1737_remove_files(&pdev->dev); } static struct platform_driver dme1737_isa_driver = { .driver = { .name = "dme1737", }, .probe = dme1737_isa_probe, .remove_new = dme1737_isa_remove, }; /* --------------------------------------------------------------------- * Module initialization and cleanup * --------------------------------------------------------------------- */ static int __init dme1737_init(void) { int err; unsigned short addr; err = i2c_add_driver(&dme1737_i2c_driver); if (err) goto exit; if (dme1737_isa_detect(0x2e, &addr) && dme1737_isa_detect(0x4e, &addr) && (!probe_all_addr || (dme1737_isa_detect(0x162e, &addr) && dme1737_isa_detect(0x164e, &addr)))) { /* Return 0 if we didn't find an ISA device */ return 0; } err = platform_driver_register(&dme1737_isa_driver); if (err) goto exit_del_i2c_driver; /* Sets global pdev as a side effect */ err = dme1737_isa_device_add(addr); if (err) goto exit_del_isa_driver; return 0; exit_del_isa_driver: platform_driver_unregister(&dme1737_isa_driver); exit_del_i2c_driver: i2c_del_driver(&dme1737_i2c_driver); exit: return err; } static void __exit dme1737_exit(void) { if (pdev) { platform_device_unregister(pdev); platform_driver_unregister(&dme1737_isa_driver); } i2c_del_driver(&dme1737_i2c_driver); } MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>"); MODULE_DESCRIPTION("DME1737 sensors"); MODULE_LICENSE("GPL"); module_init(dme1737_init); module_exit(dme1737_exit);
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