/* * dme1737.c - Driver for the SMSC DME1737, Asus A8000, and SMSC SCH311x * Super-I/O chips integrated hardware monitoring features. * Copyright (c) 2007 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 (or A8000) is found and the ISA bus if a * SCH311x chip is found. Both types of chips have very similar hardware * monitoring capabilities but differ in the way they can be accessed. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #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 <asm/io.h> /* ISA device, if found */ static struct platform_device *pdev; /* Module load parameters */ static int force_start; module_param(force_start, bool, 0); MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs"); /* Addresses to scan */ static unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END}; /* Insmod parameters */ I2C_CLIENT_INSMOD_1(dme1737); /* --------------------------------------------------------------------- * 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 * * --------------------------------------------------------------------- */ /* Voltages (in) numbered 0-6 (ix) */ #define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) \ : 0x94 + (ix)) #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] */ #define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix)) static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0}; static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 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}; 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 /* Length of ISA address segment */ #define DME1737_EXTENT 2 /* --------------------------------------------------------------------- * Data structures and manipulation thereof * --------------------------------------------------------------------- */ /* For ISA chips, we abuse the i2c_client addr and name fields. We also use the driver field to differentiate between I2C and ISA chips. */ struct dme1737_data { struct i2c_client client; struct device *hwmon_dev; struct mutex update_lock; int valid; /* !=0 if following fields are valid */ unsigned long last_update; /* in jiffies */ unsigned long last_vbat; /* in jiffies */ u8 vid; u8 pwm_rr_en; u8 has_pwm; u8 has_fan; /* Register values */ u16 in[7]; u8 in_min[7]; u8 in_max[7]; 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]; u8 zone_low[3]; u8 zone_abs[3]; u8 zone_hyst[2]; u32 alarms; }; /* Nominal voltage values */ static const int IN_NOMINAL[] = {5000, 2250, 3300, 5000, 12000, 3300, 3300}; /* Voltage input * Voltage inputs have 16 bits resolution, limit values have 8 bits * resolution. */ static inline int IN_FROM_REG(int reg, int ix, int res) { return (reg * IN_NOMINAL[ix] + (3 << (res - 3))) / (3 << (res - 2)); } static inline int IN_TO_REG(int val, int ix) { return SENSORS_LIMIT((val * 192 + IN_NOMINAL[ix] / 2) / IN_NOMINAL[ix], 0, 255); } /* 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(int val) { return SENSORS_LIMIT((val < 0 ? val - 500 : val + 500) / 1000, -128, 127); } /* 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(int 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 val, int ix, int reg) { int hyst = SENSORS_LIMIT((val + 500) / 1000, 0, 15); return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4); } /* Fan input RPM */ static inline int FAN_FROM_REG(int reg, int tpc) { return (reg == 0 || reg == 0xffff) ? 0 : (tpc == 0) ? 90000 * 60 / reg : tpc * reg; } static inline int FAN_TO_REG(int val, int tpc) { return SENSORS_LIMIT((tpc == 0) ? 90000 * 60 / val : val / tpc, 0, 0xffff); } /* 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(int 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(int 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(int 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(int 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(int 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(int 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(struct i2c_client *client, u8 reg) { s32 val; if (client->driver) { /* I2C device */ val = i2c_smbus_read_byte_data(client, reg); if (val < 0) { dev_warn(&client->dev, "Read from register " "0x%02x failed! Please report to the driver " "maintainer.\n", reg); } } else { /* ISA device */ outb(reg, client->addr); val = inb(client->addr + 1); } return val; } static s32 dme1737_write(struct i2c_client *client, u8 reg, u8 val) { s32 res = 0; if (client->driver) { /* I2C device */ res = i2c_smbus_write_byte_data(client, reg, val); if (res < 0) { dev_warn(&client->dev, "Write to register " "0x%02x failed! Please report to the driver " "maintainer.\n", reg); } } else { /* ISA device */ outb(reg, client->addr); outb(val, client->addr + 1); } return res; } static struct dme1737_data *dme1737_update_device(struct device *dev) { struct dme1737_data *data = dev_get_drvdata(dev); struct i2c_client *client = &data->client; int ix; u8 lsb[5]; 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(client, DME1737_REG_CONFIG, dme1737_read(client, DME1737_REG_CONFIG) | 0x10); data->last_vbat = jiffies; } /* Sample register contents every 1 sec */ if (time_after(jiffies, data->last_update + HZ) || !data->valid) { data->vid = dme1737_read(client, 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. */ data->in[ix] = dme1737_read(client, DME1737_REG_IN(ix)) << 8; data->in_min[ix] = dme1737_read(client, DME1737_REG_IN_MIN(ix)); data->in_max[ix] = dme1737_read(client, 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(client, DME1737_REG_TEMP(ix)) << 8; data->temp_min[ix] = dme1737_read(client, DME1737_REG_TEMP_MIN(ix)); data->temp_max[ix] = dme1737_read(client, DME1737_REG_TEMP_MAX(ix)); data->temp_offset[ix] = dme1737_read(client, 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++) { lsb[ix] = dme1737_read(client, DME1737_REG_IN_TEMP_LSB(ix)); } for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { 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_fan & (1 << ix))) { continue; } data->fan[ix] = dme1737_read(client, DME1737_REG_FAN(ix)); data->fan[ix] |= dme1737_read(client, DME1737_REG_FAN(ix) + 1) << 8; data->fan_min[ix] = dme1737_read(client, DME1737_REG_FAN_MIN(ix)); data->fan_min[ix] |= dme1737_read(client, DME1737_REG_FAN_MIN(ix) + 1) << 8; data->fan_opt[ix] = dme1737_read(client, DME1737_REG_FAN_OPT(ix)); /* fan_max exists only for fan[5-6] */ if (ix > 3) { data->fan_max[ix - 4] = dme1737_read(client, 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_pwm & (1 << ix))) { continue; } data->pwm[ix] = dme1737_read(client, DME1737_REG_PWM(ix)); data->pwm_freq[ix] = dme1737_read(client, 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(client, DME1737_REG_PWM_CONFIG(ix)); data->pwm_min[ix] = dme1737_read(client, DME1737_REG_PWM_MIN(ix)); } } for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) { data->pwm_rr[ix] = dme1737_read(client, DME1737_REG_PWM_RR(ix)); } /* Thermal zone registers */ for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) { data->zone_low[ix] = dme1737_read(client, DME1737_REG_ZONE_LOW(ix)); data->zone_abs[ix] = dme1737_read(client, DME1737_REG_ZONE_ABS(ix)); } for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) { data->zone_hyst[ix] = dme1737_read(client, DME1737_REG_ZONE_HYST(ix)); } /* Alarm registers */ data->alarms = dme1737_read(client, 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(client, DME1737_REG_ALARM2) << 8; data->alarms |= dme1737_read(client, 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 (!client->driver) { if (data->alarms & 0xff0000) { dme1737_write(client, DME1737_REG_ALARM3, 0xff); } if (data->alarms & 0xff00) { dme1737_write(client, DME1737_REG_ALARM2, 0xff); } if (data->alarms & 0xff) { dme1737_write(client, DME1737_REG_ALARM1, 0xff); } } data->last_update = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } /* --------------------------------------------------------------------- * Voltage sysfs attributes * ix = [0-5] * --------------------------------------------------------------------- */ #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], ix, 16); break; case SYS_IN_MIN: res = IN_FROM_REG(data->in_min[ix], ix, 8); break; case SYS_IN_MAX: res = IN_FROM_REG(data->in_max[ix], 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 i2c_client *client = &data->client; 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 = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); switch (fn) { case SYS_IN_MIN: data->in_min[ix] = IN_TO_REG(val, ix); dme1737_write(client, DME1737_REG_IN_MIN(ix), data->in_min[ix]); break; case SYS_IN_MAX: data->in_max[ix] = IN_TO_REG(val, ix); dme1737_write(client, 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 i2c_client *client = &data->client; 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 = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); switch (fn) { case SYS_TEMP_MIN: data->temp_min[ix] = TEMP_TO_REG(val); dme1737_write(client, DME1737_REG_TEMP_MIN(ix), data->temp_min[ix]); break; case SYS_TEMP_MAX: data->temp_max[ix] = TEMP_TO_REG(val); dme1737_write(client, DME1737_REG_TEMP_MAX(ix), data->temp_max[ix]); break; case SYS_TEMP_OFFSET: data->temp_offset[ix] = TEMP_TO_REG(val); dme1737_write(client, 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 i2c_client *client = &data->client; 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 = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); switch (fn) { case SYS_ZONE_AUTO_POINT1_TEMP_HYST: /* Refresh the cache */ data->zone_low[ix] = dme1737_read(client, DME1737_REG_ZONE_LOW(ix)); /* Modify the temp hyst value */ data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG( TEMP_FROM_REG(data->zone_low[ix], 8) - val, ix, dme1737_read(client, DME1737_REG_ZONE_HYST(ix == 2))); dme1737_write(client, 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(client, 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(client, DME1737_REG_ZONE_LOW(ix)); /* Modify the temp range value (which is stored in the upper * nibble of the pwm_freq register) */ data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val - TEMP_FROM_REG(data->zone_low[ix], 8), dme1737_read(client, DME1737_REG_PWM_FREQ(ix))); dme1737_write(client, 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(client, 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 i2c_client *client = &data->client; 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 = simple_strtol(buf, NULL, 10); 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(client, 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(client, DME1737_REG_FAN_MIN(ix), data->fan_min[ix] & 0xff); dme1737_write(client, 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(client, 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(client, DME1737_REG_FAN_OPT(ix))); dme1737_write(client, 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_attr_pwm[]; static void dme1737_chmod_file(struct device*, struct attribute*, mode_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 i2c_client *client = &data->client; 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 = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); switch (fn) { case SYS_PWM: data->pwm[ix] = SENSORS_LIMIT(val, 0, 255); dme1737_write(client, DME1737_REG_PWM(ix), data->pwm[ix]); break; case SYS_PWM_FREQ: data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(client, DME1737_REG_PWM_FREQ(ix))); dme1737_write(client, 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(client, 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(client, 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(client, 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_attr_pwm[ix], S_IRUGO); /* Turn fan fully on */ data->pwm_config[ix] = PWM_EN_TO_REG(0, data->pwm_config[ix]); dme1737_write(client, 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(client, DME1737_REG_PWM_CONFIG(ix), data->pwm_config[ix]); /* Change permissions of pwm[ix] to read-writeable */ dme1737_chmod_file(dev, dme1737_attr_pwm[ix], S_IRUGO | S_IWUSR); break; case 2: /* Change permissions of pwm[ix] to read-only */ dme1737_chmod_file(dev, dme1737_attr_pwm[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(client, 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(client, DME1737_REG_PWM_RR(ix > 0))); dme1737_write(client, 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(client, DME1737_REG_PWM_CONFIG(ix)); data->pwm_rr[ix > 0] = dme1737_read(client, 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(client, 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(client, 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(client, 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(client, 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(client, DME1737_REG_PWM_RR(0))); } else { data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix, dme1737_read(client, DME1737_REG_PWM_RR(0))); } dme1737_write(client, 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] = SENSORS_LIMIT(val, 0, 255); dme1737_write(client, 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 show_vrm(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 set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dme1737_data *data = dev_get_drvdata(dev); long val = simple_strtol(buf, NULL, 10); data->vrm = val; return count; } static ssize_t show_vid(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 show_name(struct device *dev, struct device_attribute *attr, char *buf) { struct dme1737_data *data = dev_get_drvdata(dev); return sprintf(buf, "%s\n", data->client.name); } /* --------------------------------------------------------------------- * Sysfs device attribute defines and structs * --------------------------------------------------------------------- */ /* Voltages 0-6 */ #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); /* 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 | S_IWUSR, \ show_pwm, set_pwm, SYS_PWM, ix-1); \ static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \ 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(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */ #define SENSOR_DEV_ATTR_IN(ix) \ &sensor_dev_attr_in##ix##_input.dev_attr.attr, \ &sensor_dev_attr_in##ix##_min.dev_attr.attr, \ &sensor_dev_attr_in##ix##_max.dev_attr.attr, \ &sensor_dev_attr_in##ix##_alarm.dev_attr.attr /* These attributes are read-writeable only if the chip is *not* locked */ #define SENSOR_DEV_ATTR_TEMP_LOCK(ix) \ &sensor_dev_attr_temp##ix##_offset.dev_attr.attr #define SENSOR_DEV_ATTR_TEMP(ix) \ SENSOR_DEV_ATTR_TEMP_LOCK(ix), \ &sensor_dev_attr_temp##ix##_input.dev_attr.attr, \ &sensor_dev_attr_temp##ix##_min.dev_attr.attr, \ &sensor_dev_attr_temp##ix##_max.dev_attr.attr, \ &sensor_dev_attr_temp##ix##_alarm.dev_attr.attr, \ &sensor_dev_attr_temp##ix##_fault.dev_attr.attr /* These attributes are read-writeable only if the chip is *not* locked */ #define SENSOR_DEV_ATTR_ZONE_LOCK(ix) \ &sensor_dev_attr_zone##ix##_auto_point1_temp_hyst.dev_attr.attr, \ &sensor_dev_attr_zone##ix##_auto_point1_temp.dev_attr.attr, \ &sensor_dev_attr_zone##ix##_auto_point2_temp.dev_attr.attr, \ &sensor_dev_attr_zone##ix##_auto_point3_temp.dev_attr.attr #define SENSOR_DEV_ATTR_ZONE(ix) \ SENSOR_DEV_ATTR_ZONE_LOCK(ix), \ &sensor_dev_attr_zone##ix##_auto_channels_temp.dev_attr.attr #define SENSOR_DEV_ATTR_FAN_1TO4(ix) \ &sensor_dev_attr_fan##ix##_input.dev_attr.attr, \ &sensor_dev_attr_fan##ix##_min.dev_attr.attr, \ &sensor_dev_attr_fan##ix##_alarm.dev_attr.attr, \ &sensor_dev_attr_fan##ix##_type.dev_attr.attr #define SENSOR_DEV_ATTR_FAN_5TO6(ix) \ &sensor_dev_attr_fan##ix##_input.dev_attr.attr, \ &sensor_dev_attr_fan##ix##_min.dev_attr.attr, \ &sensor_dev_attr_fan##ix##_alarm.dev_attr.attr, \ &sensor_dev_attr_fan##ix##_max.dev_attr.attr /* These attributes are read-writeable only if the chip is *not* locked */ #define SENSOR_DEV_ATTR_PWM_1TO3_LOCK(ix) \ &sensor_dev_attr_pwm##ix##_freq.dev_attr.attr, \ &sensor_dev_attr_pwm##ix##_enable.dev_attr.attr, \ &sensor_dev_attr_pwm##ix##_ramp_rate.dev_attr.attr, \ &sensor_dev_attr_pwm##ix##_auto_channels_zone.dev_attr.attr, \ &sensor_dev_attr_pwm##ix##_auto_pwm_min.dev_attr.attr, \ &sensor_dev_attr_pwm##ix##_auto_point1_pwm.dev_attr.attr #define SENSOR_DEV_ATTR_PWM_1TO3(ix) \ SENSOR_DEV_ATTR_PWM_1TO3_LOCK(ix), \ &sensor_dev_attr_pwm##ix.dev_attr.attr, \ &sensor_dev_attr_pwm##ix##_auto_point2_pwm.dev_attr.attr /* These attributes are read-writeable only if the chip is *not* locked */ #define SENSOR_DEV_ATTR_PWM_5TO6_LOCK(ix) \ &sensor_dev_attr_pwm##ix.dev_attr.attr, \ &sensor_dev_attr_pwm##ix##_freq.dev_attr.attr #define SENSOR_DEV_ATTR_PWM_5TO6(ix) \ SENSOR_DEV_ATTR_PWM_5TO6_LOCK(ix), \ &sensor_dev_attr_pwm##ix##_enable.dev_attr.attr /* 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_IN(0), SENSOR_DEV_ATTR_IN(1), SENSOR_DEV_ATTR_IN(2), SENSOR_DEV_ATTR_IN(3), SENSOR_DEV_ATTR_IN(4), SENSOR_DEV_ATTR_IN(5), SENSOR_DEV_ATTR_IN(6), /* Temperatures */ SENSOR_DEV_ATTR_TEMP(1), SENSOR_DEV_ATTR_TEMP(2), SENSOR_DEV_ATTR_TEMP(3), /* Zones */ SENSOR_DEV_ATTR_ZONE(1), SENSOR_DEV_ATTR_ZONE(2), SENSOR_DEV_ATTR_ZONE(3), /* Misc */ &dev_attr_vrm.attr, &dev_attr_cpu0_vid.attr, NULL }; static const struct attribute_group dme1737_group = { .attrs = dme1737_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_attr_pwm1[] = { SENSOR_DEV_ATTR_PWM_1TO3(1), NULL }; static struct attribute *dme1737_attr_pwm2[] = { SENSOR_DEV_ATTR_PWM_1TO3(2), NULL }; static struct attribute *dme1737_attr_pwm3[] = { SENSOR_DEV_ATTR_PWM_1TO3(3), NULL }; static struct attribute *dme1737_attr_pwm5[] = { SENSOR_DEV_ATTR_PWM_5TO6(5), NULL }; static struct attribute *dme1737_attr_pwm6[] = { SENSOR_DEV_ATTR_PWM_5TO6(6), NULL }; static const struct attribute_group dme1737_pwm_group[] = { { .attrs = dme1737_attr_pwm1 }, { .attrs = dme1737_attr_pwm2 }, { .attrs = dme1737_attr_pwm3 }, { .attrs = NULL }, { .attrs = dme1737_attr_pwm5 }, { .attrs = dme1737_attr_pwm6 }, }; /* 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_attr_fan1[] = { SENSOR_DEV_ATTR_FAN_1TO4(1), NULL }; static struct attribute *dme1737_attr_fan2[] = { SENSOR_DEV_ATTR_FAN_1TO4(2), NULL }; static struct attribute *dme1737_attr_fan3[] = { SENSOR_DEV_ATTR_FAN_1TO4(3), NULL }; static struct attribute *dme1737_attr_fan4[] = { SENSOR_DEV_ATTR_FAN_1TO4(4), NULL }; static struct attribute *dme1737_attr_fan5[] = { SENSOR_DEV_ATTR_FAN_5TO6(5), NULL }; static struct attribute *dme1737_attr_fan6[] = { SENSOR_DEV_ATTR_FAN_5TO6(6), NULL }; static const struct attribute_group dme1737_fan_group[] = { { .attrs = dme1737_attr_fan1 }, { .attrs = dme1737_attr_fan2 }, { .attrs = dme1737_attr_fan3 }, { .attrs = dme1737_attr_fan4 }, { .attrs = dme1737_attr_fan5 }, { .attrs = dme1737_attr_fan6 }, }; /* The permissions of all of the following attributes are changed to read- * writeable if the chip is *not* locked. Otherwise they stay read-only. */ static struct attribute *dme1737_attr_lock[] = { /* Temperatures */ SENSOR_DEV_ATTR_TEMP_LOCK(1), SENSOR_DEV_ATTR_TEMP_LOCK(2), SENSOR_DEV_ATTR_TEMP_LOCK(3), /* Zones */ SENSOR_DEV_ATTR_ZONE_LOCK(1), SENSOR_DEV_ATTR_ZONE_LOCK(2), SENSOR_DEV_ATTR_ZONE_LOCK(3), NULL }; static const struct attribute_group dme1737_lock_group = { .attrs = dme1737_attr_lock, }; /* 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_attr_pwm1_lock[] = { SENSOR_DEV_ATTR_PWM_1TO3_LOCK(1), NULL }; static struct attribute *dme1737_attr_pwm2_lock[] = { SENSOR_DEV_ATTR_PWM_1TO3_LOCK(2), NULL }; static struct attribute *dme1737_attr_pwm3_lock[] = { SENSOR_DEV_ATTR_PWM_1TO3_LOCK(3), NULL }; static struct attribute *dme1737_attr_pwm5_lock[] = { SENSOR_DEV_ATTR_PWM_5TO6_LOCK(5), NULL }; static struct attribute *dme1737_attr_pwm6_lock[] = { SENSOR_DEV_ATTR_PWM_5TO6_LOCK(6), NULL }; static const struct attribute_group dme1737_pwm_lock_group[] = { { .attrs = dme1737_attr_pwm1_lock }, { .attrs = dme1737_attr_pwm2_lock }, { .attrs = dme1737_attr_pwm3_lock }, { .attrs = NULL }, { .attrs = dme1737_attr_pwm5_lock }, { .attrs = dme1737_attr_pwm6_lock }, }; /* 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_attr_pwm[] = { &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, mode_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, mode_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_fan & (1 << ix)) { sysfs_remove_group(&dev->kobj, &dme1737_fan_group[ix]); } } for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) { if (data->has_pwm & (1 << ix)) { sysfs_remove_group(&dev->kobj, &dme1737_pwm_group[ix]); } } sysfs_remove_group(&dev->kobj, &dme1737_group); if (!data->client.driver) { 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.driver && (err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr))) { goto exit; } /* Create standard sysfs attributes */ if ((err = sysfs_create_group(&dev->kobj, &dme1737_group))) { goto exit_remove; } /* Create fan sysfs attributes */ for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) { if (data->has_fan & (1 << ix)) { if ((err = sysfs_create_group(&dev->kobj, &dme1737_fan_group[ix]))) { goto exit_remove; } } } /* Create PWM sysfs attributes */ for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) { if (data->has_pwm & (1 << ix)) { if ((err = sysfs_create_group(&dev->kobj, &dme1737_pwm_group[ix]))) { 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 standard attributes */ dme1737_chmod_group(dev, &dme1737_lock_group, S_IRUGO | S_IWUSR); /* Change permissions of PWM attributes */ for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_lock_group); ix++) { if (data->has_pwm & (1 << ix)) { dme1737_chmod_group(dev, &dme1737_pwm_lock_group[ix], S_IRUGO | S_IWUSR); } } /* Change permissions of pwm[1-3] if in manual mode */ for (ix = 0; ix < 3; ix++) { if ((data->has_pwm & (1 << ix)) && (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) { dme1737_chmod_file(dev, dme1737_attr_pwm[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; data->config = dme1737_read(client, 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(client, 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/present */ if (client->driver) { /* I2C chip */ data->config2 = dme1737_read(client, DME1737_REG_CONFIG2); /* Check if optional fan3 input is enabled */ if (data->config2 & 0x04) { data->has_fan |= (1 << 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 (data->client.addr == 0x2e) { data->has_fan |= (1 << 3); data->has_pwm |= (1 << 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"); } } else { /* ISA chip */ /* Fan3 and pwm3 are always available. Fan[4-5] and pwm[5-6] * don't exist in the ISA chip. */ data->has_fan |= (1 << 2); data->has_pwm |= (1 << 2); } /* Fan1, fan2, pwm1, and pwm2 are always present */ data->has_fan |= 0x03; data->has_pwm |= 0x03; dev_info(dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, " "fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n", (data->has_pwm & (1 << 2)) ? "yes" : "no", (data->has_pwm & (1 << 4)) ? "yes" : "no", (data->has_pwm & (1 << 5)) ? "yes" : "no", (data->has_fan & (1 << 2)) ? "yes" : "no", (data->has_fan & (1 << 3)) ? "yes" : "no", (data->has_fan & (1 << 4)) ? "yes" : "no", (data->has_fan & (1 << 5)) ? "yes" : "no"); reg = dme1737_read(client, DME1737_REG_TACH_PWM); /* Inform if fan-to-pwm mapping differs from the default */ if (client->driver && 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. Please report to the driver " "maintainer.\n", (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1, ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1); } else if (!client->driver && reg != 0x24) { /* ISA chip */ dev_warn(dev, "Non-standard fan to pwm mapping: " "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. " "Please report to the driver maintainer.\n", (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1, ((reg >> 4) & 0x03) + 1); } /* 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(client, DME1737_REG_PWM_CONFIG(ix)); if ((data->has_pwm & (1 << 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(client, DME1737_REG_PWM(ix), 0); dme1737_write(client, 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 */ 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 * The DME1737 can return either 0x78 or 0x77 as its device ID. */ reg = dme1737_sio_inb(sio_cip, 0x20); if (!(reg == 0x77 || reg == 0x78)) { 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 */ if (!(addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) | dme1737_sio_inb(sio_cip, 0x61))) { 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_fan |= (1 << 5); } if ((inb(addr + 0x44) & 0x0c) == 0x08) { /* pwm6 */ data->has_pwm |= (1 << 5); } if ((inb(addr + 0x45) & 0x0c) == 0x08) { /* fan5 */ data->has_fan |= (1 << 4); } if ((inb(addr + 0x46) & 0x0c) == 0x08) { /* pwm5 */ data->has_pwm |= (1 << 4); } exit: dme1737_sio_exit(sio_cip); return err; } static int dme1737_i2c_detect(struct i2c_adapter *adapter, int address, int kind) { u8 company, verstep = 0; struct i2c_client *client; struct dme1737_data *data; struct device *dev; int err = 0; const char *name; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { goto exit; } if (!(data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } client = &data->client; i2c_set_clientdata(client, data); client->addr = address; client->adapter = adapter; client->driver = &dme1737_i2c_driver; dev = &client->dev; /* A negative kind means that the driver was loaded with no force * parameter (default), so we must identify the chip. */ if (kind < 0) { company = dme1737_read(client, DME1737_REG_COMPANY); verstep = dme1737_read(client, DME1737_REG_VERSTEP); if (!((company == DME1737_COMPANY_SMSC) && ((verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP))) { err = -ENODEV; goto exit_kfree; } } kind = dme1737; name = "dme1737"; /* Fill in the remaining client fields and put it into the global * list */ strlcpy(client->name, name, I2C_NAME_SIZE); mutex_init(&data->update_lock); /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(client))) { goto exit_kfree; } dev_info(dev, "Found a DME1737 chip at 0x%02x (rev 0x%02x).\n", client->addr, verstep); /* Initialize the DME1737 chip */ if ((err = dme1737_init_device(dev))) { dev_err(dev, "Failed to initialize device.\n"); goto exit_detach; } /* Create sysfs files */ if ((err = dme1737_create_files(dev))) { dev_err(dev, "Failed to create sysfs files.\n"); goto exit_detach; } /* 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); exit_detach: i2c_detach_client(client); exit_kfree: kfree(data); exit: return err; } static int dme1737_i2c_attach_adapter(struct i2c_adapter *adapter) { if (!(adapter->class & I2C_CLASS_HWMON)) { return 0; } return i2c_probe(adapter, &addr_data, dme1737_i2c_detect); } static int dme1737_i2c_detach_client(struct i2c_client *client) { struct dme1737_data *data = i2c_get_clientdata(client); int err; hwmon_device_unregister(data->hwmon_dev); dme1737_remove_files(&client->dev); if ((err = i2c_detach_client(client))) { return err; } kfree(data); return 0; } static struct i2c_driver dme1737_i2c_driver = { .driver = { .name = "dme1737", }, .attach_adapter = dme1737_i2c_attach_adapter, .detach_client = dme1737_i2c_detach_client, }; /* --------------------------------------------------------------------- * 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 (0x7c), SCH3114 (0x7d), and * SCH3116 (0x7f). */ reg = dme1737_sio_inb(sio_cip, 0x20); if (!(reg == 0x7c || reg == 0x7d || reg == 0x7f)) { 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 */ if (!(base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) | dme1737_sio_inb(sio_cip, 0x61))) { printk(KERN_ERR "dme1737: 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; if (!(pdev = platform_device_alloc("dme1737", addr))) { printk(KERN_ERR "dme1737: Failed to allocate device.\n"); err = -ENOMEM; goto exit; } if ((err = platform_device_add_resources(pdev, &res, 1))) { printk(KERN_ERR "dme1737: Failed to add device resource " "(err = %d).\n", err); goto exit_device_put; } if ((err = platform_device_add(pdev))) { printk(KERN_ERR "dme1737: 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 __devinit dme1737_isa_probe(struct platform_device *pdev) { u8 company, device; struct resource *res; struct i2c_client *client; struct dme1737_data *data; struct device *dev = &pdev->dev; int err; res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (!request_region(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); err = -EBUSY; goto exit; } if (!(data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL))) { err = -ENOMEM; goto exit_release_region; } client = &data->client; i2c_set_clientdata(client, data); client->addr = res->start; platform_set_drvdata(pdev, data); company = dme1737_read(client, DME1737_REG_COMPANY); device = dme1737_read(client, DME1737_REG_DEVICE); if (!((company == DME1737_COMPANY_SMSC) && (device == SCH311X_DEVICE))) { err = -ENODEV; goto exit_kfree; } /* Fill in the remaining client fields and initialize the mutex */ strlcpy(client->name, "sch311x", I2C_NAME_SIZE); mutex_init(&data->update_lock); dev_info(dev, "Found a SCH311x chip at 0x%04x\n", client->addr); /* Initialize the chip */ if ((err = dme1737_init_device(dev))) { dev_err(dev, "Failed to initialize device.\n"); goto exit_kfree; } /* Create sysfs files */ if ((err = dme1737_create_files(dev))) { dev_err(dev, "Failed to create sysfs files.\n"); goto exit_kfree; } /* 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); exit_kfree: platform_set_drvdata(pdev, NULL); kfree(data); exit_release_region: release_region(res->start, DME1737_EXTENT); exit: return err; } static int __devexit 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); release_region(data->client.addr, DME1737_EXTENT); platform_set_drvdata(pdev, NULL); kfree(data); return 0; } static struct platform_driver dme1737_isa_driver = { .driver = { .owner = THIS_MODULE, .name = "dme1737", }, .probe = dme1737_isa_probe, .remove = __devexit_p(dme1737_isa_remove), }; /* --------------------------------------------------------------------- * Module initialization and cleanup * --------------------------------------------------------------------- */ static int __init dme1737_init(void) { int err; unsigned short addr; if ((err = i2c_add_driver(&dme1737_i2c_driver))) { goto exit; } if (dme1737_isa_detect(0x2e, &addr) && dme1737_isa_detect(0x4e, &addr)) { /* Return 0 if we didn't find an ISA device */ return 0; } if ((err = platform_driver_register(&dme1737_isa_driver))) { goto exit_del_i2c_driver; } /* Sets global pdev as a side effect */ if ((err = dme1737_isa_device_add(addr))) { 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);