| /* |
| * w83781d.c - Part of lm_sensors, Linux kernel modules for hardware |
| * monitoring |
| * Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, |
| * Philip Edelbrock <phil@netroedge.com>, |
| * and Mark Studebaker <mdsxyz123@yahoo.com> |
| * Copyright (c) 2007 - 2008 Jean Delvare <khali@linux-fr.org> |
| * |
| * 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. |
| */ |
| |
| /* |
| * Supports following chips: |
| * |
| * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA |
| * as99127f 7 3 0 3 0x31 0x12c3 yes no |
| * as99127f rev.2 (type_name = as99127f) 0x31 0x5ca3 yes no |
| * w83781d 7 3 0 3 0x10-1 0x5ca3 yes yes |
| * w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes |
| * w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no |
| * |
| */ |
| |
| #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/hwmon.h> |
| #include <linux/hwmon-vid.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/sysfs.h> |
| #include <linux/err.h> |
| #include <linux/mutex.h> |
| |
| #ifdef CONFIG_ISA |
| #include <linux/platform_device.h> |
| #include <linux/ioport.h> |
| #include <linux/io.h> |
| #endif |
| |
| #include "lm75.h" |
| |
| /* Addresses to scan */ |
| static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, |
| 0x2e, 0x2f, I2C_CLIENT_END }; |
| |
| enum chips { w83781d, w83782d, w83783s, as99127f }; |
| |
| /* Insmod parameters */ |
| static unsigned short force_subclients[4]; |
| module_param_array(force_subclients, short, NULL, 0); |
| MODULE_PARM_DESC(force_subclients, "List of subclient addresses: " |
| "{bus, clientaddr, subclientaddr1, subclientaddr2}"); |
| |
| static bool reset; |
| module_param(reset, bool, 0); |
| MODULE_PARM_DESC(reset, "Set to one to reset chip on load"); |
| |
| static bool init = 1; |
| module_param(init, bool, 0); |
| MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization"); |
| |
| /* Constants specified below */ |
| |
| /* Length of ISA address segment */ |
| #define W83781D_EXTENT 8 |
| |
| /* Where are the ISA address/data registers relative to the base address */ |
| #define W83781D_ADDR_REG_OFFSET 5 |
| #define W83781D_DATA_REG_OFFSET 6 |
| |
| /* The device registers */ |
| /* in nr from 0 to 8 */ |
| #define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \ |
| (0x554 + (((nr) - 7) * 2))) |
| #define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \ |
| (0x555 + (((nr) - 7) * 2))) |
| #define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \ |
| (0x550 + (nr) - 7)) |
| |
| /* fan nr from 0 to 2 */ |
| #define W83781D_REG_FAN_MIN(nr) (0x3b + (nr)) |
| #define W83781D_REG_FAN(nr) (0x28 + (nr)) |
| |
| #define W83781D_REG_BANK 0x4E |
| #define W83781D_REG_TEMP2_CONFIG 0x152 |
| #define W83781D_REG_TEMP3_CONFIG 0x252 |
| /* temp nr from 1 to 3 */ |
| #define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \ |
| ((nr == 2) ? (0x0150) : \ |
| (0x27))) |
| #define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \ |
| ((nr == 2) ? (0x153) : \ |
| (0x3A))) |
| #define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \ |
| ((nr == 2) ? (0x155) : \ |
| (0x39))) |
| |
| #define W83781D_REG_CONFIG 0x40 |
| |
| /* Interrupt status (W83781D, AS99127F) */ |
| #define W83781D_REG_ALARM1 0x41 |
| #define W83781D_REG_ALARM2 0x42 |
| |
| /* Real-time status (W83782D, W83783S) */ |
| #define W83782D_REG_ALARM1 0x459 |
| #define W83782D_REG_ALARM2 0x45A |
| #define W83782D_REG_ALARM3 0x45B |
| |
| #define W83781D_REG_BEEP_CONFIG 0x4D |
| #define W83781D_REG_BEEP_INTS1 0x56 |
| #define W83781D_REG_BEEP_INTS2 0x57 |
| #define W83781D_REG_BEEP_INTS3 0x453 /* not on W83781D */ |
| |
| #define W83781D_REG_VID_FANDIV 0x47 |
| |
| #define W83781D_REG_CHIPID 0x49 |
| #define W83781D_REG_WCHIPID 0x58 |
| #define W83781D_REG_CHIPMAN 0x4F |
| #define W83781D_REG_PIN 0x4B |
| |
| /* 782D/783S only */ |
| #define W83781D_REG_VBAT 0x5D |
| |
| /* PWM 782D (1-4) and 783S (1-2) only */ |
| static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F }; |
| #define W83781D_REG_PWMCLK12 0x5C |
| #define W83781D_REG_PWMCLK34 0x45C |
| |
| #define W83781D_REG_I2C_ADDR 0x48 |
| #define W83781D_REG_I2C_SUBADDR 0x4A |
| |
| /* |
| * The following are undocumented in the data sheets however we |
| * received the information in an email from Winbond tech support |
| */ |
| /* Sensor selection - not on 781d */ |
| #define W83781D_REG_SCFG1 0x5D |
| static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 }; |
| |
| #define W83781D_REG_SCFG2 0x59 |
| static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 }; |
| |
| #define W83781D_DEFAULT_BETA 3435 |
| |
| /* Conversions */ |
| #define IN_TO_REG(val) SENSORS_LIMIT(((val) + 8) / 16, 0, 255) |
| #define IN_FROM_REG(val) ((val) * 16) |
| |
| static inline u8 |
| FAN_TO_REG(long rpm, int div) |
| { |
| if (rpm == 0) |
| return 255; |
| rpm = SENSORS_LIMIT(rpm, 1, 1000000); |
| return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
| } |
| |
| static inline long |
| FAN_FROM_REG(u8 val, int div) |
| { |
| if (val == 0) |
| return -1; |
| if (val == 255) |
| return 0; |
| return 1350000 / (val * div); |
| } |
| |
| #define TEMP_TO_REG(val) SENSORS_LIMIT((val) / 1000, -127, 128) |
| #define TEMP_FROM_REG(val) ((val) * 1000) |
| |
| #define BEEP_MASK_FROM_REG(val, type) ((type) == as99127f ? \ |
| (~(val)) & 0x7fff : (val) & 0xff7fff) |
| #define BEEP_MASK_TO_REG(val, type) ((type) == as99127f ? \ |
| (~(val)) & 0x7fff : (val) & 0xff7fff) |
| |
| #define DIV_FROM_REG(val) (1 << (val)) |
| |
| static inline u8 |
| DIV_TO_REG(long val, enum chips type) |
| { |
| int i; |
| val = SENSORS_LIMIT(val, 1, |
| ((type == w83781d |
| || type == as99127f) ? 8 : 128)) >> 1; |
| for (i = 0; i < 7; i++) { |
| if (val == 0) |
| break; |
| val >>= 1; |
| } |
| return i; |
| } |
| |
| struct w83781d_data { |
| struct i2c_client *client; |
| struct device *hwmon_dev; |
| struct mutex lock; |
| enum chips type; |
| |
| /* For ISA device only */ |
| const char *name; |
| int isa_addr; |
| |
| struct mutex update_lock; |
| char valid; /* !=0 if following fields are valid */ |
| unsigned long last_updated; /* In jiffies */ |
| |
| struct i2c_client *lm75[2]; /* for secondary I2C addresses */ |
| /* array of 2 pointers to subclients */ |
| |
| u8 in[9]; /* Register value - 8 & 9 for 782D only */ |
| u8 in_max[9]; /* Register value - 8 & 9 for 782D only */ |
| u8 in_min[9]; /* Register value - 8 & 9 for 782D only */ |
| u8 fan[3]; /* Register value */ |
| u8 fan_min[3]; /* Register value */ |
| s8 temp; /* Register value */ |
| s8 temp_max; /* Register value */ |
| s8 temp_max_hyst; /* Register value */ |
| u16 temp_add[2]; /* Register value */ |
| u16 temp_max_add[2]; /* Register value */ |
| u16 temp_max_hyst_add[2]; /* Register value */ |
| u8 fan_div[3]; /* Register encoding, shifted right */ |
| u8 vid; /* Register encoding, combined */ |
| u32 alarms; /* Register encoding, combined */ |
| u32 beep_mask; /* Register encoding, combined */ |
| u8 pwm[4]; /* Register value */ |
| u8 pwm2_enable; /* Boolean */ |
| u16 sens[3]; /* |
| * 782D/783S only. |
| * 1 = pentium diode; 2 = 3904 diode; |
| * 4 = thermistor |
| */ |
| u8 vrm; |
| }; |
| |
| static struct w83781d_data *w83781d_data_if_isa(void); |
| static int w83781d_alias_detect(struct i2c_client *client, u8 chipid); |
| |
| static int w83781d_read_value(struct w83781d_data *data, u16 reg); |
| static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value); |
| static struct w83781d_data *w83781d_update_device(struct device *dev); |
| static void w83781d_init_device(struct device *dev); |
| |
| /* following are the sysfs callback functions */ |
| #define show_in_reg(reg) \ |
| static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \ |
| char *buf) \ |
| { \ |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
| struct w83781d_data *data = w83781d_update_device(dev); \ |
| return sprintf(buf, "%ld\n", \ |
| (long)IN_FROM_REG(data->reg[attr->index])); \ |
| } |
| show_in_reg(in); |
| show_in_reg(in_min); |
| show_in_reg(in_max); |
| |
| #define store_in_reg(REG, reg) \ |
| static ssize_t store_in_##reg(struct device *dev, struct device_attribute \ |
| *da, const char *buf, size_t count) \ |
| { \ |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
| struct w83781d_data *data = dev_get_drvdata(dev); \ |
| int nr = attr->index; \ |
| unsigned long val; \ |
| int err = kstrtoul(buf, 10, &val); \ |
| if (err) \ |
| return err; \ |
| mutex_lock(&data->update_lock); \ |
| data->in_##reg[nr] = IN_TO_REG(val); \ |
| w83781d_write_value(data, W83781D_REG_IN_##REG(nr), \ |
| data->in_##reg[nr]); \ |
| \ |
| mutex_unlock(&data->update_lock); \ |
| return count; \ |
| } |
| store_in_reg(MIN, min); |
| store_in_reg(MAX, max); |
| |
| #define sysfs_in_offsets(offset) \ |
| static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
| show_in, NULL, offset); \ |
| static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_in_min, store_in_min, offset); \ |
| static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_in_max, store_in_max, offset) |
| |
| sysfs_in_offsets(0); |
| sysfs_in_offsets(1); |
| sysfs_in_offsets(2); |
| sysfs_in_offsets(3); |
| sysfs_in_offsets(4); |
| sysfs_in_offsets(5); |
| sysfs_in_offsets(6); |
| sysfs_in_offsets(7); |
| sysfs_in_offsets(8); |
| |
| #define show_fan_reg(reg) \ |
| static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \ |
| char *buf) \ |
| { \ |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
| struct w83781d_data *data = w83781d_update_device(dev); \ |
| return sprintf(buf, "%ld\n", \ |
| FAN_FROM_REG(data->reg[attr->index], \ |
| DIV_FROM_REG(data->fan_div[attr->index]))); \ |
| } |
| show_fan_reg(fan); |
| show_fan_reg(fan_min); |
| |
| static ssize_t |
| store_fan_min(struct device *dev, struct device_attribute *da, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| int nr = attr->index; |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->fan_min[nr] = |
| FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
| w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), |
| data->fan_min[nr]); |
| |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
| static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, |
| show_fan_min, store_fan_min, 0); |
| static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); |
| static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, |
| show_fan_min, store_fan_min, 1); |
| static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); |
| static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR, |
| show_fan_min, store_fan_min, 2); |
| |
| #define show_temp_reg(reg) \ |
| static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \ |
| char *buf) \ |
| { \ |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
| struct w83781d_data *data = w83781d_update_device(dev); \ |
| int nr = attr->index; \ |
| if (nr >= 2) { /* TEMP2 and TEMP3 */ \ |
| return sprintf(buf, "%d\n", \ |
| LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \ |
| } else { /* TEMP1 */ \ |
| return sprintf(buf, "%ld\n", (long)TEMP_FROM_REG(data->reg)); \ |
| } \ |
| } |
| show_temp_reg(temp); |
| show_temp_reg(temp_max); |
| show_temp_reg(temp_max_hyst); |
| |
| #define store_temp_reg(REG, reg) \ |
| static ssize_t store_temp_##reg(struct device *dev, \ |
| struct device_attribute *da, const char *buf, size_t count) \ |
| { \ |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
| struct w83781d_data *data = dev_get_drvdata(dev); \ |
| int nr = attr->index; \ |
| long val; \ |
| int err = kstrtol(buf, 10, &val); \ |
| if (err) \ |
| return err; \ |
| mutex_lock(&data->update_lock); \ |
| \ |
| if (nr >= 2) { /* TEMP2 and TEMP3 */ \ |
| data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \ |
| w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \ |
| data->temp_##reg##_add[nr-2]); \ |
| } else { /* TEMP1 */ \ |
| data->temp_##reg = TEMP_TO_REG(val); \ |
| w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \ |
| data->temp_##reg); \ |
| } \ |
| \ |
| mutex_unlock(&data->update_lock); \ |
| return count; \ |
| } |
| store_temp_reg(OVER, max); |
| store_temp_reg(HYST, max_hyst); |
| |
| #define sysfs_temp_offsets(offset) \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
| show_temp, NULL, offset); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_temp_max, store_temp_max, offset); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ |
| show_temp_max_hyst, store_temp_max_hyst, offset); |
| |
| sysfs_temp_offsets(1); |
| sysfs_temp_offsets(2); |
| sysfs_temp_offsets(3); |
| |
| static ssize_t |
| show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); |
| } |
| |
| static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); |
| |
| static ssize_t |
| show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| return sprintf(buf, "%ld\n", (long) data->vrm); |
| } |
| |
| static ssize_t |
| store_vrm_reg(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| data->vrm = SENSORS_LIMIT(val, 0, 255); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); |
| |
| static ssize_t |
| show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| return sprintf(buf, "%u\n", data->alarms); |
| } |
| |
| static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); |
| |
| static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
| } |
| |
| /* The W83781D has a single alarm bit for temp2 and temp3 */ |
| static ssize_t show_temp3_alarm(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| int bitnr = (data->type == w83781d) ? 5 : 13; |
| return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
| } |
| |
| static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); |
| static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); |
| static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10); |
| static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16); |
| static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17); |
| static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); |
| static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); |
| static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11); |
| static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); |
| static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0); |
| |
| static ssize_t show_beep_mask(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| return sprintf(buf, "%ld\n", |
| (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type)); |
| } |
| |
| static ssize_t |
| store_beep_mask(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->beep_mask &= 0x8000; /* preserve beep enable */ |
| data->beep_mask |= BEEP_MASK_TO_REG(val, data->type); |
| w83781d_write_value(data, W83781D_REG_BEEP_INTS1, |
| data->beep_mask & 0xff); |
| w83781d_write_value(data, W83781D_REG_BEEP_INTS2, |
| (data->beep_mask >> 8) & 0xff); |
| if (data->type != w83781d && data->type != as99127f) { |
| w83781d_write_value(data, W83781D_REG_BEEP_INTS3, |
| ((data->beep_mask) >> 16) & 0xff); |
| } |
| mutex_unlock(&data->update_lock); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR, |
| show_beep_mask, store_beep_mask); |
| |
| static ssize_t show_beep(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); |
| } |
| |
| static ssize_t |
| store_beep(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| u8 reg; |
| unsigned long bit; |
| int err; |
| |
| err = kstrtoul(buf, 10, &bit); |
| if (err) |
| return err; |
| |
| if (bit & ~1) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| if (bit) |
| data->beep_mask |= (1 << bitnr); |
| else |
| data->beep_mask &= ~(1 << bitnr); |
| |
| if (bitnr < 8) { |
| reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1); |
| if (bit) |
| reg |= (1 << bitnr); |
| else |
| reg &= ~(1 << bitnr); |
| w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg); |
| } else if (bitnr < 16) { |
| reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2); |
| if (bit) |
| reg |= (1 << (bitnr - 8)); |
| else |
| reg &= ~(1 << (bitnr - 8)); |
| w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg); |
| } else { |
| reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3); |
| if (bit) |
| reg |= (1 << (bitnr - 16)); |
| else |
| reg &= ~(1 << (bitnr - 16)); |
| w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg); |
| } |
| mutex_unlock(&data->update_lock); |
| |
| return count; |
| } |
| |
| /* The W83781D has a single beep bit for temp2 and temp3 */ |
| static ssize_t show_temp3_beep(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| int bitnr = (data->type == w83781d) ? 5 : 13; |
| return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); |
| } |
| |
| static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 0); |
| static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 1); |
| static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 2); |
| static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 3); |
| static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 8); |
| static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 9); |
| static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 10); |
| static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 16); |
| static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 17); |
| static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 6); |
| static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 7); |
| static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 11); |
| static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 4); |
| static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 5); |
| static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, |
| show_temp3_beep, store_beep, 13); |
| static SENSOR_DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, |
| show_beep, store_beep, 15); |
| |
| static ssize_t |
| show_fan_div(struct device *dev, struct device_attribute *da, char *buf) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| struct w83781d_data *data = w83781d_update_device(dev); |
| return sprintf(buf, "%ld\n", |
| (long) DIV_FROM_REG(data->fan_div[attr->index])); |
| } |
| |
| /* |
| * Note: we save and restore the fan minimum here, because its value is |
| * determined in part by the fan divisor. This follows the principle of |
| * least surprise; the user doesn't expect the fan minimum to change just |
| * because the divisor changed. |
| */ |
| static ssize_t |
| store_fan_div(struct device *dev, struct device_attribute *da, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| unsigned long min; |
| int nr = attr->index; |
| u8 reg; |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| |
| /* Save fan_min */ |
| min = FAN_FROM_REG(data->fan_min[nr], |
| DIV_FROM_REG(data->fan_div[nr])); |
| |
| data->fan_div[nr] = DIV_TO_REG(val, data->type); |
| |
| reg = (w83781d_read_value(data, nr == 2 ? |
| W83781D_REG_PIN : W83781D_REG_VID_FANDIV) |
| & (nr == 0 ? 0xcf : 0x3f)) |
| | ((data->fan_div[nr] & 0x03) << (nr == 0 ? 4 : 6)); |
| w83781d_write_value(data, nr == 2 ? |
| W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg); |
| |
| /* w83781d and as99127f don't have extended divisor bits */ |
| if (data->type != w83781d && data->type != as99127f) { |
| reg = (w83781d_read_value(data, W83781D_REG_VBAT) |
| & ~(1 << (5 + nr))) |
| | ((data->fan_div[nr] & 0x04) << (3 + nr)); |
| w83781d_write_value(data, W83781D_REG_VBAT, reg); |
| } |
| |
| /* Restore fan_min */ |
| data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
| w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]); |
| |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, |
| show_fan_div, store_fan_div, 0); |
| static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, |
| show_fan_div, store_fan_div, 1); |
| static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, |
| show_fan_div, store_fan_div, 2); |
| |
| static ssize_t |
| show_pwm(struct device *dev, struct device_attribute *da, char *buf) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| struct w83781d_data *data = w83781d_update_device(dev); |
| return sprintf(buf, "%d\n", (int)data->pwm[attr->index]); |
| } |
| |
| static ssize_t |
| show_pwm2_enable(struct device *dev, struct device_attribute *da, char *buf) |
| { |
| struct w83781d_data *data = w83781d_update_device(dev); |
| return sprintf(buf, "%d\n", (int)data->pwm2_enable); |
| } |
| |
| static ssize_t |
| store_pwm(struct device *dev, struct device_attribute *da, const char *buf, |
| size_t count) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| int nr = attr->index; |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->pwm[nr] = SENSORS_LIMIT(val, 0, 255); |
| w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t |
| store_pwm2_enable(struct device *dev, struct device_attribute *da, |
| const char *buf, size_t count) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| u32 reg; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| |
| switch (val) { |
| case 0: |
| case 1: |
| reg = w83781d_read_value(data, W83781D_REG_PWMCLK12); |
| w83781d_write_value(data, W83781D_REG_PWMCLK12, |
| (reg & 0xf7) | (val << 3)); |
| |
| reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG); |
| w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, |
| (reg & 0xef) | (!val << 4)); |
| |
| data->pwm2_enable = val; |
| break; |
| |
| default: |
| mutex_unlock(&data->update_lock); |
| return -EINVAL; |
| } |
| |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0); |
| static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1); |
| static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2); |
| static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3); |
| /* only PWM2 can be enabled/disabled */ |
| static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, |
| show_pwm2_enable, store_pwm2_enable); |
| |
| static ssize_t |
| show_sensor(struct device *dev, struct device_attribute *da, char *buf) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| struct w83781d_data *data = w83781d_update_device(dev); |
| return sprintf(buf, "%d\n", (int)data->sens[attr->index]); |
| } |
| |
| static ssize_t |
| store_sensor(struct device *dev, struct device_attribute *da, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| int nr = attr->index; |
| unsigned long val; |
| u32 tmp; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| |
| switch (val) { |
| case 1: /* PII/Celeron diode */ |
| tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
| w83781d_write_value(data, W83781D_REG_SCFG1, |
| tmp | BIT_SCFG1[nr]); |
| tmp = w83781d_read_value(data, W83781D_REG_SCFG2); |
| w83781d_write_value(data, W83781D_REG_SCFG2, |
| tmp | BIT_SCFG2[nr]); |
| data->sens[nr] = val; |
| break; |
| case 2: /* 3904 */ |
| tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
| w83781d_write_value(data, W83781D_REG_SCFG1, |
| tmp | BIT_SCFG1[nr]); |
| tmp = w83781d_read_value(data, W83781D_REG_SCFG2); |
| w83781d_write_value(data, W83781D_REG_SCFG2, |
| tmp & ~BIT_SCFG2[nr]); |
| data->sens[nr] = val; |
| break; |
| case W83781D_DEFAULT_BETA: |
| dev_warn(dev, "Sensor type %d is deprecated, please use 4 " |
| "instead\n", W83781D_DEFAULT_BETA); |
| /* fall through */ |
| case 4: /* thermistor */ |
| tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
| w83781d_write_value(data, W83781D_REG_SCFG1, |
| tmp & ~BIT_SCFG1[nr]); |
| data->sens[nr] = val; |
| break; |
| default: |
| dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n", |
| (long) val); |
| break; |
| } |
| |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, |
| show_sensor, store_sensor, 0); |
| static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, |
| show_sensor, store_sensor, 1); |
| static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, |
| show_sensor, store_sensor, 2); |
| |
| /* |
| * Assumes that adapter is of I2C, not ISA variety. |
| * OTHERWISE DON'T CALL THIS |
| */ |
| static int |
| w83781d_detect_subclients(struct i2c_client *new_client) |
| { |
| int i, val1 = 0, id; |
| int err; |
| int address = new_client->addr; |
| unsigned short sc_addr[2]; |
| struct i2c_adapter *adapter = new_client->adapter; |
| struct w83781d_data *data = i2c_get_clientdata(new_client); |
| enum chips kind = data->type; |
| int num_sc = 1; |
| |
| id = i2c_adapter_id(adapter); |
| |
| if (force_subclients[0] == id && force_subclients[1] == address) { |
| for (i = 2; i <= 3; i++) { |
| if (force_subclients[i] < 0x48 || |
| force_subclients[i] > 0x4f) { |
| dev_err(&new_client->dev, "Invalid subclient " |
| "address %d; must be 0x48-0x4f\n", |
| force_subclients[i]); |
| err = -EINVAL; |
| goto ERROR_SC_1; |
| } |
| } |
| w83781d_write_value(data, W83781D_REG_I2C_SUBADDR, |
| (force_subclients[2] & 0x07) | |
| ((force_subclients[3] & 0x07) << 4)); |
| sc_addr[0] = force_subclients[2]; |
| } else { |
| val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR); |
| sc_addr[0] = 0x48 + (val1 & 0x07); |
| } |
| |
| if (kind != w83783s) { |
| num_sc = 2; |
| if (force_subclients[0] == id && |
| force_subclients[1] == address) { |
| sc_addr[1] = force_subclients[3]; |
| } else { |
| sc_addr[1] = 0x48 + ((val1 >> 4) & 0x07); |
| } |
| if (sc_addr[0] == sc_addr[1]) { |
| dev_err(&new_client->dev, |
| "Duplicate addresses 0x%x for subclients.\n", |
| sc_addr[0]); |
| err = -EBUSY; |
| goto ERROR_SC_2; |
| } |
| } |
| |
| for (i = 0; i < num_sc; i++) { |
| data->lm75[i] = i2c_new_dummy(adapter, sc_addr[i]); |
| if (!data->lm75[i]) { |
| dev_err(&new_client->dev, "Subclient %d " |
| "registration at address 0x%x " |
| "failed.\n", i, sc_addr[i]); |
| err = -ENOMEM; |
| if (i == 1) |
| goto ERROR_SC_3; |
| goto ERROR_SC_2; |
| } |
| } |
| |
| return 0; |
| |
| /* Undo inits in case of errors */ |
| ERROR_SC_3: |
| i2c_unregister_device(data->lm75[0]); |
| ERROR_SC_2: |
| ERROR_SC_1: |
| return err; |
| } |
| |
| #define IN_UNIT_ATTRS(X) \ |
| &sensor_dev_attr_in##X##_input.dev_attr.attr, \ |
| &sensor_dev_attr_in##X##_min.dev_attr.attr, \ |
| &sensor_dev_attr_in##X##_max.dev_attr.attr, \ |
| &sensor_dev_attr_in##X##_alarm.dev_attr.attr, \ |
| &sensor_dev_attr_in##X##_beep.dev_attr.attr |
| |
| #define FAN_UNIT_ATTRS(X) \ |
| &sensor_dev_attr_fan##X##_input.dev_attr.attr, \ |
| &sensor_dev_attr_fan##X##_min.dev_attr.attr, \ |
| &sensor_dev_attr_fan##X##_div.dev_attr.attr, \ |
| &sensor_dev_attr_fan##X##_alarm.dev_attr.attr, \ |
| &sensor_dev_attr_fan##X##_beep.dev_attr.attr |
| |
| #define TEMP_UNIT_ATTRS(X) \ |
| &sensor_dev_attr_temp##X##_input.dev_attr.attr, \ |
| &sensor_dev_attr_temp##X##_max.dev_attr.attr, \ |
| &sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr, \ |
| &sensor_dev_attr_temp##X##_alarm.dev_attr.attr, \ |
| &sensor_dev_attr_temp##X##_beep.dev_attr.attr |
| |
| static struct attribute *w83781d_attributes[] = { |
| IN_UNIT_ATTRS(0), |
| IN_UNIT_ATTRS(2), |
| IN_UNIT_ATTRS(3), |
| IN_UNIT_ATTRS(4), |
| IN_UNIT_ATTRS(5), |
| IN_UNIT_ATTRS(6), |
| FAN_UNIT_ATTRS(1), |
| FAN_UNIT_ATTRS(2), |
| FAN_UNIT_ATTRS(3), |
| TEMP_UNIT_ATTRS(1), |
| TEMP_UNIT_ATTRS(2), |
| &dev_attr_cpu0_vid.attr, |
| &dev_attr_vrm.attr, |
| &dev_attr_alarms.attr, |
| &dev_attr_beep_mask.attr, |
| &sensor_dev_attr_beep_enable.dev_attr.attr, |
| NULL |
| }; |
| static const struct attribute_group w83781d_group = { |
| .attrs = w83781d_attributes, |
| }; |
| |
| static struct attribute *w83781d_attributes_in1[] = { |
| IN_UNIT_ATTRS(1), |
| NULL |
| }; |
| static const struct attribute_group w83781d_group_in1 = { |
| .attrs = w83781d_attributes_in1, |
| }; |
| |
| static struct attribute *w83781d_attributes_in78[] = { |
| IN_UNIT_ATTRS(7), |
| IN_UNIT_ATTRS(8), |
| NULL |
| }; |
| static const struct attribute_group w83781d_group_in78 = { |
| .attrs = w83781d_attributes_in78, |
| }; |
| |
| static struct attribute *w83781d_attributes_temp3[] = { |
| TEMP_UNIT_ATTRS(3), |
| NULL |
| }; |
| static const struct attribute_group w83781d_group_temp3 = { |
| .attrs = w83781d_attributes_temp3, |
| }; |
| |
| static struct attribute *w83781d_attributes_pwm12[] = { |
| &sensor_dev_attr_pwm1.dev_attr.attr, |
| &sensor_dev_attr_pwm2.dev_attr.attr, |
| &dev_attr_pwm2_enable.attr, |
| NULL |
| }; |
| static const struct attribute_group w83781d_group_pwm12 = { |
| .attrs = w83781d_attributes_pwm12, |
| }; |
| |
| static struct attribute *w83781d_attributes_pwm34[] = { |
| &sensor_dev_attr_pwm3.dev_attr.attr, |
| &sensor_dev_attr_pwm4.dev_attr.attr, |
| NULL |
| }; |
| static const struct attribute_group w83781d_group_pwm34 = { |
| .attrs = w83781d_attributes_pwm34, |
| }; |
| |
| static struct attribute *w83781d_attributes_other[] = { |
| &sensor_dev_attr_temp1_type.dev_attr.attr, |
| &sensor_dev_attr_temp2_type.dev_attr.attr, |
| &sensor_dev_attr_temp3_type.dev_attr.attr, |
| NULL |
| }; |
| static const struct attribute_group w83781d_group_other = { |
| .attrs = w83781d_attributes_other, |
| }; |
| |
| /* No clean up is done on error, it's up to the caller */ |
| static int |
| w83781d_create_files(struct device *dev, int kind, int is_isa) |
| { |
| int err; |
| |
| err = sysfs_create_group(&dev->kobj, &w83781d_group); |
| if (err) |
| return err; |
| |
| if (kind != w83783s) { |
| err = sysfs_create_group(&dev->kobj, &w83781d_group_in1); |
| if (err) |
| return err; |
| } |
| if (kind != as99127f && kind != w83781d && kind != w83783s) { |
| err = sysfs_create_group(&dev->kobj, &w83781d_group_in78); |
| if (err) |
| return err; |
| } |
| if (kind != w83783s) { |
| err = sysfs_create_group(&dev->kobj, &w83781d_group_temp3); |
| if (err) |
| return err; |
| |
| if (kind != w83781d) { |
| err = sysfs_chmod_file(&dev->kobj, |
| &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
| S_IRUGO | S_IWUSR); |
| if (err) |
| return err; |
| } |
| } |
| |
| if (kind != w83781d && kind != as99127f) { |
| err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm12); |
| if (err) |
| return err; |
| } |
| if (kind == w83782d && !is_isa) { |
| err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm34); |
| if (err) |
| return err; |
| } |
| |
| if (kind != as99127f && kind != w83781d) { |
| err = device_create_file(dev, |
| &sensor_dev_attr_temp1_type.dev_attr); |
| if (err) |
| return err; |
| err = device_create_file(dev, |
| &sensor_dev_attr_temp2_type.dev_attr); |
| if (err) |
| return err; |
| if (kind != w83783s) { |
| err = device_create_file(dev, |
| &sensor_dev_attr_temp3_type.dev_attr); |
| if (err) |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* Return 0 if detection is successful, -ENODEV otherwise */ |
| static int |
| w83781d_detect(struct i2c_client *client, struct i2c_board_info *info) |
| { |
| int val1, val2; |
| struct w83781d_data *isa = w83781d_data_if_isa(); |
| struct i2c_adapter *adapter = client->adapter; |
| int address = client->addr; |
| const char *client_name; |
| enum vendor { winbond, asus } vendid; |
| |
| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| return -ENODEV; |
| |
| /* |
| * We block updates of the ISA device to minimize the risk of |
| * concurrent access to the same W83781D chip through different |
| * interfaces. |
| */ |
| if (isa) |
| mutex_lock(&isa->update_lock); |
| |
| if (i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG) & 0x80) { |
| dev_dbg(&adapter->dev, |
| "Detection of w83781d chip failed at step 3\n"); |
| goto err_nodev; |
| } |
| |
| val1 = i2c_smbus_read_byte_data(client, W83781D_REG_BANK); |
| val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN); |
| /* Check for Winbond or Asus ID if in bank 0 */ |
| if (!(val1 & 0x07) && |
| ((!(val1 & 0x80) && val2 != 0xa3 && val2 != 0xc3) || |
| ((val1 & 0x80) && val2 != 0x5c && val2 != 0x12))) { |
| dev_dbg(&adapter->dev, |
| "Detection of w83781d chip failed at step 4\n"); |
| goto err_nodev; |
| } |
| /* |
| * If Winbond SMBus, check address at 0x48. |
| * Asus doesn't support, except for as99127f rev.2 |
| */ |
| if ((!(val1 & 0x80) && val2 == 0xa3) || |
| ((val1 & 0x80) && val2 == 0x5c)) { |
| if (i2c_smbus_read_byte_data(client, W83781D_REG_I2C_ADDR) |
| != address) { |
| dev_dbg(&adapter->dev, |
| "Detection of w83781d chip failed at step 5\n"); |
| goto err_nodev; |
| } |
| } |
| |
| /* Put it now into bank 0 and Vendor ID High Byte */ |
| i2c_smbus_write_byte_data(client, W83781D_REG_BANK, |
| (i2c_smbus_read_byte_data(client, W83781D_REG_BANK) |
| & 0x78) | 0x80); |
| |
| /* Get the vendor ID */ |
| val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN); |
| if (val2 == 0x5c) |
| vendid = winbond; |
| else if (val2 == 0x12) |
| vendid = asus; |
| else { |
| dev_dbg(&adapter->dev, |
| "w83781d chip vendor is neither Winbond nor Asus\n"); |
| goto err_nodev; |
| } |
| |
| /* Determine the chip type. */ |
| val1 = i2c_smbus_read_byte_data(client, W83781D_REG_WCHIPID); |
| if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond) |
| client_name = "w83781d"; |
| else if (val1 == 0x30 && vendid == winbond) |
| client_name = "w83782d"; |
| else if (val1 == 0x40 && vendid == winbond && address == 0x2d) |
| client_name = "w83783s"; |
| else if (val1 == 0x31) |
| client_name = "as99127f"; |
| else |
| goto err_nodev; |
| |
| if (val1 <= 0x30 && w83781d_alias_detect(client, val1)) { |
| dev_dbg(&adapter->dev, "Device at 0x%02x appears to " |
| "be the same as ISA device\n", address); |
| goto err_nodev; |
| } |
| |
| if (isa) |
| mutex_unlock(&isa->update_lock); |
| |
| strlcpy(info->type, client_name, I2C_NAME_SIZE); |
| |
| return 0; |
| |
| err_nodev: |
| if (isa) |
| mutex_unlock(&isa->update_lock); |
| return -ENODEV; |
| } |
| |
| static void w83781d_remove_files(struct device *dev) |
| { |
| sysfs_remove_group(&dev->kobj, &w83781d_group); |
| sysfs_remove_group(&dev->kobj, &w83781d_group_in1); |
| sysfs_remove_group(&dev->kobj, &w83781d_group_in78); |
| sysfs_remove_group(&dev->kobj, &w83781d_group_temp3); |
| sysfs_remove_group(&dev->kobj, &w83781d_group_pwm12); |
| sysfs_remove_group(&dev->kobj, &w83781d_group_pwm34); |
| sysfs_remove_group(&dev->kobj, &w83781d_group_other); |
| } |
| |
| static int |
| w83781d_probe(struct i2c_client *client, const struct i2c_device_id *id) |
| { |
| struct device *dev = &client->dev; |
| struct w83781d_data *data; |
| int err; |
| |
| data = devm_kzalloc(dev, sizeof(struct w83781d_data), GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| |
| i2c_set_clientdata(client, data); |
| mutex_init(&data->lock); |
| mutex_init(&data->update_lock); |
| |
| data->type = id->driver_data; |
| data->client = client; |
| |
| /* attach secondary i2c lm75-like clients */ |
| err = w83781d_detect_subclients(client); |
| if (err) |
| return err; |
| |
| /* Initialize the chip */ |
| w83781d_init_device(dev); |
| |
| /* Register sysfs hooks */ |
| err = w83781d_create_files(dev, data->type, 0); |
| if (err) |
| goto exit_remove_files; |
| |
| data->hwmon_dev = hwmon_device_register(dev); |
| if (IS_ERR(data->hwmon_dev)) { |
| err = PTR_ERR(data->hwmon_dev); |
| goto exit_remove_files; |
| } |
| |
| return 0; |
| |
| exit_remove_files: |
| w83781d_remove_files(dev); |
| if (data->lm75[0]) |
| i2c_unregister_device(data->lm75[0]); |
| if (data->lm75[1]) |
| i2c_unregister_device(data->lm75[1]); |
| return err; |
| } |
| |
| static int |
| w83781d_remove(struct i2c_client *client) |
| { |
| struct w83781d_data *data = i2c_get_clientdata(client); |
| struct device *dev = &client->dev; |
| |
| hwmon_device_unregister(data->hwmon_dev); |
| w83781d_remove_files(dev); |
| |
| if (data->lm75[0]) |
| i2c_unregister_device(data->lm75[0]); |
| if (data->lm75[1]) |
| i2c_unregister_device(data->lm75[1]); |
| |
| return 0; |
| } |
| |
| static int |
| w83781d_read_value_i2c(struct w83781d_data *data, u16 reg) |
| { |
| struct i2c_client *client = data->client; |
| int res, bank; |
| struct i2c_client *cl; |
| |
| bank = (reg >> 8) & 0x0f; |
| if (bank > 2) |
| /* switch banks */ |
| i2c_smbus_write_byte_data(client, W83781D_REG_BANK, |
| bank); |
| if (bank == 0 || bank > 2) { |
| res = i2c_smbus_read_byte_data(client, reg & 0xff); |
| } else { |
| /* switch to subclient */ |
| cl = data->lm75[bank - 1]; |
| /* convert from ISA to LM75 I2C addresses */ |
| switch (reg & 0xff) { |
| case 0x50: /* TEMP */ |
| res = i2c_smbus_read_word_swapped(cl, 0); |
| break; |
| case 0x52: /* CONFIG */ |
| res = i2c_smbus_read_byte_data(cl, 1); |
| break; |
| case 0x53: /* HYST */ |
| res = i2c_smbus_read_word_swapped(cl, 2); |
| break; |
| case 0x55: /* OVER */ |
| default: |
| res = i2c_smbus_read_word_swapped(cl, 3); |
| break; |
| } |
| } |
| if (bank > 2) |
| i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0); |
| |
| return res; |
| } |
| |
| static int |
| w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value) |
| { |
| struct i2c_client *client = data->client; |
| int bank; |
| struct i2c_client *cl; |
| |
| bank = (reg >> 8) & 0x0f; |
| if (bank > 2) |
| /* switch banks */ |
| i2c_smbus_write_byte_data(client, W83781D_REG_BANK, |
| bank); |
| if (bank == 0 || bank > 2) { |
| i2c_smbus_write_byte_data(client, reg & 0xff, |
| value & 0xff); |
| } else { |
| /* switch to subclient */ |
| cl = data->lm75[bank - 1]; |
| /* convert from ISA to LM75 I2C addresses */ |
| switch (reg & 0xff) { |
| case 0x52: /* CONFIG */ |
| i2c_smbus_write_byte_data(cl, 1, value & 0xff); |
| break; |
| case 0x53: /* HYST */ |
| i2c_smbus_write_word_swapped(cl, 2, value); |
| break; |
| case 0x55: /* OVER */ |
| i2c_smbus_write_word_swapped(cl, 3, value); |
| break; |
| } |
| } |
| if (bank > 2) |
| i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0); |
| |
| return 0; |
| } |
| |
| static void |
| w83781d_init_device(struct device *dev) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| int i, p; |
| int type = data->type; |
| u8 tmp; |
| |
| if (reset && type != as99127f) { /* |
| * this resets registers we don't have |
| * documentation for on the as99127f |
| */ |
| /* |
| * Resetting the chip has been the default for a long time, |
| * but it causes the BIOS initializations (fan clock dividers, |
| * thermal sensor types...) to be lost, so it is now optional. |
| * It might even go away if nobody reports it as being useful, |
| * as I see very little reason why this would be needed at |
| * all. |
| */ |
| dev_info(dev, "If reset=1 solved a problem you were " |
| "having, please report!\n"); |
| |
| /* save these registers */ |
| i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG); |
| p = w83781d_read_value(data, W83781D_REG_PWMCLK12); |
| /* |
| * Reset all except Watchdog values and last conversion values |
| * This sets fan-divs to 2, among others |
| */ |
| w83781d_write_value(data, W83781D_REG_CONFIG, 0x80); |
| /* |
| * Restore the registers and disable power-on abnormal beep. |
| * This saves FAN 1/2/3 input/output values set by BIOS. |
| */ |
| w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80); |
| w83781d_write_value(data, W83781D_REG_PWMCLK12, p); |
| /* |
| * Disable master beep-enable (reset turns it on). |
| * Individual beep_mask should be reset to off but for some |
| * reason disabling this bit helps some people not get beeped |
| */ |
| w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0); |
| } |
| |
| /* |
| * Disable power-on abnormal beep, as advised by the datasheet. |
| * Already done if reset=1. |
| */ |
| if (init && !reset && type != as99127f) { |
| i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG); |
| w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80); |
| } |
| |
| data->vrm = vid_which_vrm(); |
| |
| if ((type != w83781d) && (type != as99127f)) { |
| tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
| for (i = 1; i <= 3; i++) { |
| if (!(tmp & BIT_SCFG1[i - 1])) { |
| data->sens[i - 1] = 4; |
| } else { |
| if (w83781d_read_value |
| (data, |
| W83781D_REG_SCFG2) & BIT_SCFG2[i - 1]) |
| data->sens[i - 1] = 1; |
| else |
| data->sens[i - 1] = 2; |
| } |
| if (type == w83783s && i == 2) |
| break; |
| } |
| } |
| |
| if (init && type != as99127f) { |
| /* Enable temp2 */ |
| tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG); |
| if (tmp & 0x01) { |
| dev_warn(dev, "Enabling temp2, readings " |
| "might not make sense\n"); |
| w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG, |
| tmp & 0xfe); |
| } |
| |
| /* Enable temp3 */ |
| if (type != w83783s) { |
| tmp = w83781d_read_value(data, |
| W83781D_REG_TEMP3_CONFIG); |
| if (tmp & 0x01) { |
| dev_warn(dev, "Enabling temp3, " |
| "readings might not make sense\n"); |
| w83781d_write_value(data, |
| W83781D_REG_TEMP3_CONFIG, tmp & 0xfe); |
| } |
| } |
| } |
| |
| /* Start monitoring */ |
| w83781d_write_value(data, W83781D_REG_CONFIG, |
| (w83781d_read_value(data, |
| W83781D_REG_CONFIG) & 0xf7) |
| | 0x01); |
| |
| /* A few vars need to be filled upon startup */ |
| for (i = 0; i < 3; i++) { |
| data->fan_min[i] = w83781d_read_value(data, |
| W83781D_REG_FAN_MIN(i)); |
| } |
| |
| mutex_init(&data->update_lock); |
| } |
| |
| static struct w83781d_data *w83781d_update_device(struct device *dev) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| struct i2c_client *client = data->client; |
| int i; |
| |
| mutex_lock(&data->update_lock); |
| |
| if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
| || !data->valid) { |
| dev_dbg(dev, "Starting device update\n"); |
| |
| for (i = 0; i <= 8; i++) { |
| if (data->type == w83783s && i == 1) |
| continue; /* 783S has no in1 */ |
| data->in[i] = |
| w83781d_read_value(data, W83781D_REG_IN(i)); |
| data->in_min[i] = |
| w83781d_read_value(data, W83781D_REG_IN_MIN(i)); |
| data->in_max[i] = |
| w83781d_read_value(data, W83781D_REG_IN_MAX(i)); |
| if ((data->type != w83782d) && (i == 6)) |
| break; |
| } |
| for (i = 0; i < 3; i++) { |
| data->fan[i] = |
| w83781d_read_value(data, W83781D_REG_FAN(i)); |
| data->fan_min[i] = |
| w83781d_read_value(data, W83781D_REG_FAN_MIN(i)); |
| } |
| if (data->type != w83781d && data->type != as99127f) { |
| for (i = 0; i < 4; i++) { |
| data->pwm[i] = |
| w83781d_read_value(data, |
| W83781D_REG_PWM[i]); |
| /* Only W83782D on SMBus has PWM3 and PWM4 */ |
| if ((data->type != w83782d || !client) |
| && i == 1) |
| break; |
| } |
| /* Only PWM2 can be disabled */ |
| data->pwm2_enable = (w83781d_read_value(data, |
| W83781D_REG_PWMCLK12) & 0x08) >> 3; |
| } |
| |
| data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1)); |
| data->temp_max = |
| w83781d_read_value(data, W83781D_REG_TEMP_OVER(1)); |
| data->temp_max_hyst = |
| w83781d_read_value(data, W83781D_REG_TEMP_HYST(1)); |
| data->temp_add[0] = |
| w83781d_read_value(data, W83781D_REG_TEMP(2)); |
| data->temp_max_add[0] = |
| w83781d_read_value(data, W83781D_REG_TEMP_OVER(2)); |
| data->temp_max_hyst_add[0] = |
| w83781d_read_value(data, W83781D_REG_TEMP_HYST(2)); |
| if (data->type != w83783s) { |
| data->temp_add[1] = |
| w83781d_read_value(data, W83781D_REG_TEMP(3)); |
| data->temp_max_add[1] = |
| w83781d_read_value(data, |
| W83781D_REG_TEMP_OVER(3)); |
| data->temp_max_hyst_add[1] = |
| w83781d_read_value(data, |
| W83781D_REG_TEMP_HYST(3)); |
| } |
| i = w83781d_read_value(data, W83781D_REG_VID_FANDIV); |
| data->vid = i & 0x0f; |
| data->vid |= (w83781d_read_value(data, |
| W83781D_REG_CHIPID) & 0x01) << 4; |
| data->fan_div[0] = (i >> 4) & 0x03; |
| data->fan_div[1] = (i >> 6) & 0x03; |
| data->fan_div[2] = (w83781d_read_value(data, |
| W83781D_REG_PIN) >> 6) & 0x03; |
| if ((data->type != w83781d) && (data->type != as99127f)) { |
| i = w83781d_read_value(data, W83781D_REG_VBAT); |
| data->fan_div[0] |= (i >> 3) & 0x04; |
| data->fan_div[1] |= (i >> 4) & 0x04; |
| data->fan_div[2] |= (i >> 5) & 0x04; |
| } |
| if (data->type == w83782d) { |
| data->alarms = w83781d_read_value(data, |
| W83782D_REG_ALARM1) |
| | (w83781d_read_value(data, |
| W83782D_REG_ALARM2) << 8) |
| | (w83781d_read_value(data, |
| W83782D_REG_ALARM3) << 16); |
| } else if (data->type == w83783s) { |
| data->alarms = w83781d_read_value(data, |
| W83782D_REG_ALARM1) |
| | (w83781d_read_value(data, |
| W83782D_REG_ALARM2) << 8); |
| } else { |
| /* |
| * No real-time status registers, fall back to |
| * interrupt status registers |
| */ |
| data->alarms = w83781d_read_value(data, |
| W83781D_REG_ALARM1) |
| | (w83781d_read_value(data, |
| W83781D_REG_ALARM2) << 8); |
| } |
| i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2); |
| data->beep_mask = (i << 8) + |
| w83781d_read_value(data, W83781D_REG_BEEP_INTS1); |
| if ((data->type != w83781d) && (data->type != as99127f)) { |
| data->beep_mask |= |
| w83781d_read_value(data, |
| W83781D_REG_BEEP_INTS3) << 16; |
| } |
| data->last_updated = jiffies; |
| data->valid = 1; |
| } |
| |
| mutex_unlock(&data->update_lock); |
| |
| return data; |
| } |
| |
| static const struct i2c_device_id w83781d_ids[] = { |
| { "w83781d", w83781d, }, |
| { "w83782d", w83782d, }, |
| { "w83783s", w83783s, }, |
| { "as99127f", as99127f }, |
| { /* LIST END */ } |
| }; |
| MODULE_DEVICE_TABLE(i2c, w83781d_ids); |
| |
| static struct i2c_driver w83781d_driver = { |
| .class = I2C_CLASS_HWMON, |
| .driver = { |
| .name = "w83781d", |
| }, |
| .probe = w83781d_probe, |
| .remove = w83781d_remove, |
| .id_table = w83781d_ids, |
| .detect = w83781d_detect, |
| .address_list = normal_i2c, |
| }; |
| |
| /* |
| * ISA related code |
| */ |
| #ifdef CONFIG_ISA |
| |
| /* ISA device, if found */ |
| static struct platform_device *pdev; |
| |
| static unsigned short isa_address = 0x290; |
| |
| /* |
| * I2C devices get this name attribute automatically, but for ISA devices |
| * we must create it by ourselves. |
| */ |
| static ssize_t |
| show_name(struct device *dev, struct device_attribute *devattr, char *buf) |
| { |
| struct w83781d_data *data = dev_get_drvdata(dev); |
| return sprintf(buf, "%s\n", data->name); |
| } |
| static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
| |
| static struct w83781d_data *w83781d_data_if_isa(void) |
| { |
| return pdev ? platform_get_drvdata(pdev) : NULL; |
| } |
| |
| /* Returns 1 if the I2C chip appears to be an alias of the ISA chip */ |
| static int w83781d_alias_detect(struct i2c_client *client, u8 chipid) |
| { |
| struct w83781d_data *isa; |
| int i; |
| |
| if (!pdev) /* No ISA chip */ |
| return 0; |
| |
| isa = platform_get_drvdata(pdev); |
| |
| if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr) |
| return 0; /* Address doesn't match */ |
| if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid) |
| return 0; /* Chip type doesn't match */ |
| |
| /* |
| * We compare all the limit registers, the config register and the |
| * interrupt mask registers |
| */ |
| for (i = 0x2b; i <= 0x3d; i++) { |
| if (w83781d_read_value(isa, i) != |
| i2c_smbus_read_byte_data(client, i)) |
| return 0; |
| } |
| if (w83781d_read_value(isa, W83781D_REG_CONFIG) != |
| i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG)) |
| return 0; |
| for (i = 0x43; i <= 0x46; i++) { |
| if (w83781d_read_value(isa, i) != |
| i2c_smbus_read_byte_data(client, i)) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static int |
| w83781d_read_value_isa(struct w83781d_data *data, u16 reg) |
| { |
| int word_sized, res; |
| |
| word_sized = (((reg & 0xff00) == 0x100) |
| || ((reg & 0xff00) == 0x200)) |
| && (((reg & 0x00ff) == 0x50) |
| || ((reg & 0x00ff) == 0x53) |
| || ((reg & 0x00ff) == 0x55)); |
| if (reg & 0xff00) { |
| outb_p(W83781D_REG_BANK, |
| data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| outb_p(reg >> 8, |
| data->isa_addr + W83781D_DATA_REG_OFFSET); |
| } |
| outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| res = inb_p(data->isa_addr + W83781D_DATA_REG_OFFSET); |
| if (word_sized) { |
| outb_p((reg & 0xff) + 1, |
| data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| res = |
| (res << 8) + inb_p(data->isa_addr + |
| W83781D_DATA_REG_OFFSET); |
| } |
| if (reg & 0xff00) { |
| outb_p(W83781D_REG_BANK, |
| data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET); |
| } |
| return res; |
| } |
| |
| static void |
| w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value) |
| { |
| int word_sized; |
| |
| word_sized = (((reg & 0xff00) == 0x100) |
| || ((reg & 0xff00) == 0x200)) |
| && (((reg & 0x00ff) == 0x53) |
| || ((reg & 0x00ff) == 0x55)); |
| if (reg & 0xff00) { |
| outb_p(W83781D_REG_BANK, |
| data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| outb_p(reg >> 8, |
| data->isa_addr + W83781D_DATA_REG_OFFSET); |
| } |
| outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| if (word_sized) { |
| outb_p(value >> 8, |
| data->isa_addr + W83781D_DATA_REG_OFFSET); |
| outb_p((reg & 0xff) + 1, |
| data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| } |
| outb_p(value & 0xff, data->isa_addr + W83781D_DATA_REG_OFFSET); |
| if (reg & 0xff00) { |
| outb_p(W83781D_REG_BANK, |
| data->isa_addr + W83781D_ADDR_REG_OFFSET); |
| outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET); |
| } |
| } |
| |
| /* |
| * The SMBus locks itself, usually, but nothing may access the Winbond between |
| * bank switches. ISA access must always be locked explicitly! |
| * We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks, |
| * would slow down the W83781D access and should not be necessary. |
| * There are some ugly typecasts here, but the good news is - they should |
| * nowhere else be necessary! |
| */ |
| static int |
| w83781d_read_value(struct w83781d_data *data, u16 reg) |
| { |
| struct i2c_client *client = data->client; |
| int res; |
| |
| mutex_lock(&data->lock); |
| if (client) |
| res = w83781d_read_value_i2c(data, reg); |
| else |
| res = w83781d_read_value_isa(data, reg); |
| mutex_unlock(&data->lock); |
| return res; |
| } |
| |
| static int |
| w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value) |
| { |
| struct i2c_client *client = data->client; |
| |
| mutex_lock(&data->lock); |
| if (client) |
| w83781d_write_value_i2c(data, reg, value); |
| else |
| w83781d_write_value_isa(data, reg, value); |
| mutex_unlock(&data->lock); |
| return 0; |
| } |
| |
| static int |
| w83781d_isa_probe(struct platform_device *pdev) |
| { |
| int err, reg; |
| struct w83781d_data *data; |
| struct resource *res; |
| |
| /* Reserve the ISA region */ |
| res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
| if (!devm_request_region(&pdev->dev, |
| res->start + W83781D_ADDR_REG_OFFSET, 2, |
| "w83781d")) |
| return -EBUSY; |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(struct w83781d_data), |
| GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| |
| mutex_init(&data->lock); |
| data->isa_addr = res->start; |
| platform_set_drvdata(pdev, data); |
| |
| reg = w83781d_read_value(data, W83781D_REG_WCHIPID); |
| switch (reg) { |
| case 0x30: |
| data->type = w83782d; |
| data->name = "w83782d"; |
| break; |
| default: |
| data->type = w83781d; |
| data->name = "w83781d"; |
| } |
| |
| /* Initialize the W83781D chip */ |
| w83781d_init_device(&pdev->dev); |
| |
| /* Register sysfs hooks */ |
| err = w83781d_create_files(&pdev->dev, data->type, 1); |
| if (err) |
| goto exit_remove_files; |
| |
| err = device_create_file(&pdev->dev, &dev_attr_name); |
| if (err) |
| goto exit_remove_files; |
| |
| data->hwmon_dev = hwmon_device_register(&pdev->dev); |
| if (IS_ERR(data->hwmon_dev)) { |
| err = PTR_ERR(data->hwmon_dev); |
| goto exit_remove_files; |
| } |
| |
| return 0; |
| |
| exit_remove_files: |
| w83781d_remove_files(&pdev->dev); |
| device_remove_file(&pdev->dev, &dev_attr_name); |
| return err; |
| } |
| |
| static int __devexit |
| w83781d_isa_remove(struct platform_device *pdev) |
| { |
| struct w83781d_data *data = platform_get_drvdata(pdev); |
| |
| hwmon_device_unregister(data->hwmon_dev); |
| w83781d_remove_files(&pdev->dev); |
| device_remove_file(&pdev->dev, &dev_attr_name); |
| |
| return 0; |
| } |
| |
| static struct platform_driver w83781d_isa_driver = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "w83781d", |
| }, |
| .probe = w83781d_isa_probe, |
| .remove = w83781d_isa_remove, |
| }; |
| |
| /* return 1 if a supported chip is found, 0 otherwise */ |
| static int __init |
| w83781d_isa_found(unsigned short address) |
| { |
| int val, save, found = 0; |
| int port; |
| |
| /* |
| * Some boards declare base+0 to base+7 as a PNP device, some base+4 |
| * to base+7 and some base+5 to base+6. So we better request each port |
| * individually for the probing phase. |
| */ |
| for (port = address; port < address + W83781D_EXTENT; port++) { |
| if (!request_region(port, 1, "w83781d")) { |
| pr_debug("Failed to request port 0x%x\n", port); |
| goto release; |
| } |
| } |
| |
| #define REALLY_SLOW_IO |
| /* |
| * We need the timeouts for at least some W83781D-like |
| * chips. But only if we read 'undefined' registers. |
| */ |
| val = inb_p(address + 1); |
| if (inb_p(address + 2) != val |
| || inb_p(address + 3) != val |
| || inb_p(address + 7) != val) { |
| pr_debug("Detection failed at step %d\n", 1); |
| goto release; |
| } |
| #undef REALLY_SLOW_IO |
| |
| /* |
| * We should be able to change the 7 LSB of the address port. The |
| * MSB (busy flag) should be clear initially, set after the write. |
| */ |
| save = inb_p(address + W83781D_ADDR_REG_OFFSET); |
| if (save & 0x80) { |
| pr_debug("Detection failed at step %d\n", 2); |
| goto release; |
| } |
| val = ~save & 0x7f; |
| outb_p(val, address + W83781D_ADDR_REG_OFFSET); |
| if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) { |
| outb_p(save, address + W83781D_ADDR_REG_OFFSET); |
| pr_debug("Detection failed at step %d\n", 3); |
| goto release; |
| } |
| |
| /* We found a device, now see if it could be a W83781D */ |
| outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET); |
| val = inb_p(address + W83781D_DATA_REG_OFFSET); |
| if (val & 0x80) { |
| pr_debug("Detection failed at step %d\n", 4); |
| goto release; |
| } |
| outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET); |
| save = inb_p(address + W83781D_DATA_REG_OFFSET); |
| outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET); |
| val = inb_p(address + W83781D_DATA_REG_OFFSET); |
| if ((!(save & 0x80) && (val != 0xa3)) |
| || ((save & 0x80) && (val != 0x5c))) { |
| pr_debug("Detection failed at step %d\n", 5); |
| goto release; |
| } |
| outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET); |
| val = inb_p(address + W83781D_DATA_REG_OFFSET); |
| if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */ |
| pr_debug("Detection failed at step %d\n", 6); |
| goto release; |
| } |
| |
| /* The busy flag should be clear again */ |
| if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) { |
| pr_debug("Detection failed at step %d\n", 7); |
| goto release; |
| } |
| |
| /* Determine the chip type */ |
| outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET); |
| save = inb_p(address + W83781D_DATA_REG_OFFSET); |
| outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET); |
| outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET); |
| val = inb_p(address + W83781D_DATA_REG_OFFSET); |
| if ((val & 0xfe) == 0x10 /* W83781D */ |
| || val == 0x30) /* W83782D */ |
| found = 1; |
| |
| if (found) |
| pr_info("Found a %s chip at %#x\n", |
| val == 0x30 ? "W83782D" : "W83781D", (int)address); |
| |
| release: |
| for (port--; port >= address; port--) |
| release_region(port, 1); |
| return found; |
| } |
| |
| static int __init |
| w83781d_isa_device_add(unsigned short address) |
| { |
| struct resource res = { |
| .start = address, |
| .end = address + W83781D_EXTENT - 1, |
| .name = "w83781d", |
| .flags = IORESOURCE_IO, |
| }; |
| int err; |
| |
| pdev = platform_device_alloc("w83781d", address); |
| if (!pdev) { |
| err = -ENOMEM; |
| pr_err("Device allocation failed\n"); |
| goto exit; |
| } |
| |
| err = platform_device_add_resources(pdev, &res, 1); |
| if (err) { |
| pr_err("Device resource addition failed (%d)\n", err); |
| goto exit_device_put; |
| } |
| |
| err = platform_device_add(pdev); |
| if (err) { |
| pr_err("Device addition failed (%d)\n", err); |
| goto exit_device_put; |
| } |
| |
| return 0; |
| |
| exit_device_put: |
| platform_device_put(pdev); |
| exit: |
| pdev = NULL; |
| return err; |
| } |
| |
| static int __init |
| w83781d_isa_register(void) |
| { |
| int res; |
| |
| if (w83781d_isa_found(isa_address)) { |
| res = platform_driver_register(&w83781d_isa_driver); |
| if (res) |
| goto exit; |
| |
| /* Sets global pdev as a side effect */ |
| res = w83781d_isa_device_add(isa_address); |
| if (res) |
| goto exit_unreg_isa_driver; |
| } |
| |
| return 0; |
| |
| exit_unreg_isa_driver: |
| platform_driver_unregister(&w83781d_isa_driver); |
| exit: |
| return res; |
| } |
| |
| static void |
| w83781d_isa_unregister(void) |
| { |
| if (pdev) { |
| platform_device_unregister(pdev); |
| platform_driver_unregister(&w83781d_isa_driver); |
| } |
| } |
| #else /* !CONFIG_ISA */ |
| |
| static struct w83781d_data *w83781d_data_if_isa(void) |
| { |
| return NULL; |
| } |
| |
| static int |
| w83781d_alias_detect(struct i2c_client *client, u8 chipid) |
| { |
| return 0; |
| } |
| |
| static int |
| w83781d_read_value(struct w83781d_data *data, u16 reg) |
| { |
| int res; |
| |
| mutex_lock(&data->lock); |
| res = w83781d_read_value_i2c(data, reg); |
| mutex_unlock(&data->lock); |
| |
| return res; |
| } |
| |
| static int |
| w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value) |
| { |
| mutex_lock(&data->lock); |
| w83781d_write_value_i2c(data, reg, value); |
| mutex_unlock(&data->lock); |
| |
| return 0; |
| } |
| |
| static int __init |
| w83781d_isa_register(void) |
| { |
| return 0; |
| } |
| |
| static void |
| w83781d_isa_unregister(void) |
| { |
| } |
| #endif /* CONFIG_ISA */ |
| |
| static int __init |
| sensors_w83781d_init(void) |
| { |
| int res; |
| |
| /* |
| * We register the ISA device first, so that we can skip the |
| * registration of an I2C interface to the same device. |
| */ |
| res = w83781d_isa_register(); |
| if (res) |
| goto exit; |
| |
| res = i2c_add_driver(&w83781d_driver); |
| if (res) |
| goto exit_unreg_isa; |
| |
| return 0; |
| |
| exit_unreg_isa: |
| w83781d_isa_unregister(); |
| exit: |
| return res; |
| } |
| |
| static void __exit |
| sensors_w83781d_exit(void) |
| { |
| w83781d_isa_unregister(); |
| i2c_del_driver(&w83781d_driver); |
| } |
| |
| MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " |
| "Philip Edelbrock <phil@netroedge.com>, " |
| "and Mark Studebaker <mdsxyz123@yahoo.com>"); |
| MODULE_DESCRIPTION("W83781D driver"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(sensors_w83781d_init); |
| module_exit(sensors_w83781d_exit); |