diff options
Diffstat (limited to 'drivers/i2c/chips/w83627ehf.c')
| -rw-r--r-- | drivers/i2c/chips/w83627ehf.c | 846 |
1 files changed, 0 insertions, 846 deletions
diff --git a/drivers/i2c/chips/w83627ehf.c b/drivers/i2c/chips/w83627ehf.c deleted file mode 100644 index 8a40b6976e1a..000000000000 --- a/drivers/i2c/chips/w83627ehf.c +++ /dev/null @@ -1,846 +0,0 @@ -/* - w83627ehf - Driver for the hardware monitoring functionality of - the Winbond W83627EHF Super-I/O chip - Copyright (C) 2005 Jean Delvare <khali@linux-fr.org> - - Shamelessly ripped from the w83627hf driver - Copyright (C) 2003 Mark Studebaker - - Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help - in testing and debugging this driver. - - 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 the following chips: - - Chip #vin #fan #pwm #temp chip_id man_id - w83627ehf - 5 - 3 0x88 0x5ca3 - - This is a preliminary version of the driver, only supporting the - fan and temperature inputs. The chip does much more than that. -*/ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/i2c.h> -#include <linux/i2c-sensor.h> -#include <asm/io.h> -#include "lm75.h" - -/* Addresses to scan - The actual ISA address is read from Super-I/O configuration space */ -static unsigned short normal_i2c[] = { I2C_CLIENT_END }; -static unsigned int normal_isa[] = { 0, I2C_CLIENT_ISA_END }; - -/* Insmod parameters */ -SENSORS_INSMOD_1(w83627ehf); - -/* - * Super-I/O constants and functions - */ - -static int REG; /* The register to read/write */ -static int VAL; /* The value to read/write */ - -#define W83627EHF_LD_HWM 0x0b - -#define SIO_REG_LDSEL 0x07 /* Logical device select */ -#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ -#define SIO_REG_ENABLE 0x30 /* Logical device enable */ -#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ - -#define SIO_W83627EHF_ID 0x8840 -#define SIO_ID_MASK 0xFFC0 - -static inline void -superio_outb(int reg, int val) -{ - outb(reg, REG); - outb(val, VAL); -} - -static inline int -superio_inb(int reg) -{ - outb(reg, REG); - return inb(VAL); -} - -static inline void -superio_select(int ld) -{ - outb(SIO_REG_LDSEL, REG); - outb(ld, VAL); -} - -static inline void -superio_enter(void) -{ - outb(0x87, REG); - outb(0x87, REG); -} - -static inline void -superio_exit(void) -{ - outb(0x02, REG); - outb(0x02, VAL); -} - -/* - * ISA constants - */ - -#define REGION_LENGTH 8 -#define ADDR_REG_OFFSET 5 -#define DATA_REG_OFFSET 6 - -#define W83627EHF_REG_BANK 0x4E -#define W83627EHF_REG_CONFIG 0x40 -#define W83627EHF_REG_CHIP_ID 0x49 -#define W83627EHF_REG_MAN_ID 0x4F - -static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 }; -static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c }; - -#define W83627EHF_REG_TEMP1 0x27 -#define W83627EHF_REG_TEMP1_HYST 0x3a -#define W83627EHF_REG_TEMP1_OVER 0x39 -static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 }; -static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 }; -static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 }; -static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 }; - -/* Fan clock dividers are spread over the following five registers */ -#define W83627EHF_REG_FANDIV1 0x47 -#define W83627EHF_REG_FANDIV2 0x4B -#define W83627EHF_REG_VBAT 0x5D -#define W83627EHF_REG_DIODE 0x59 -#define W83627EHF_REG_SMI_OVT 0x4C - -/* - * Conversions - */ - -static inline unsigned int -fan_from_reg(u8 reg, unsigned int div) -{ - if (reg == 0 || reg == 255) - return 0; - return 1350000U / (reg * div); -} - -static inline unsigned int -div_from_reg(u8 reg) -{ - return 1 << reg; -} - -static inline int -temp1_from_reg(s8 reg) -{ - return reg * 1000; -} - -static inline s8 -temp1_to_reg(int temp) -{ - if (temp <= -128000) - return -128; - if (temp >= 127000) - return 127; - if (temp < 0) - return (temp - 500) / 1000; - return (temp + 500) / 1000; -} - -/* - * Data structures and manipulation thereof - */ - -struct w83627ehf_data { - struct i2c_client client; - struct semaphore lock; - - struct semaphore update_lock; - char valid; /* !=0 if following fields are valid */ - unsigned long last_updated; /* In jiffies */ - - /* Register values */ - u8 fan[5]; - u8 fan_min[5]; - u8 fan_div[5]; - u8 has_fan; /* some fan inputs can be disabled */ - s8 temp1; - s8 temp1_max; - s8 temp1_max_hyst; - s16 temp[2]; - s16 temp_max[2]; - s16 temp_max_hyst[2]; -}; - -static inline int is_word_sized(u16 reg) -{ - return (((reg & 0xff00) == 0x100 - || (reg & 0xff00) == 0x200) - && ((reg & 0x00ff) == 0x50 - || (reg & 0x00ff) == 0x53 - || (reg & 0x00ff) == 0x55)); -} - -/* We assume that the default bank is 0, thus the following two functions do - nothing for registers which live in bank 0. For others, they respectively - set the bank register to the correct value (before the register is - accessed), and back to 0 (afterwards). */ -static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg) -{ - if (reg & 0xff00) { - outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); - outb_p(reg >> 8, client->addr + DATA_REG_OFFSET); - } -} - -static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg) -{ - if (reg & 0xff00) { - outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); - outb_p(0, client->addr + DATA_REG_OFFSET); - } -} - -static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg) -{ - struct w83627ehf_data *data = i2c_get_clientdata(client); - int res, word_sized = is_word_sized(reg); - - down(&data->lock); - - w83627ehf_set_bank(client, reg); - outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); - res = inb_p(client->addr + DATA_REG_OFFSET); - if (word_sized) { - outb_p((reg & 0xff) + 1, - client->addr + ADDR_REG_OFFSET); - res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET); - } - w83627ehf_reset_bank(client, reg); - - up(&data->lock); - - return res; -} - -static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value) -{ - struct w83627ehf_data *data = i2c_get_clientdata(client); - int word_sized = is_word_sized(reg); - - down(&data->lock); - - w83627ehf_set_bank(client, reg); - outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); - if (word_sized) { - outb_p(value >> 8, client->addr + DATA_REG_OFFSET); - outb_p((reg & 0xff) + 1, - client->addr + ADDR_REG_OFFSET); - } - outb_p(value & 0xff, client->addr + DATA_REG_OFFSET); - w83627ehf_reset_bank(client, reg); - - up(&data->lock); - return 0; -} - -/* This function assumes that the caller holds data->update_lock */ -static void w83627ehf_write_fan_div(struct i2c_client *client, int nr) -{ - struct w83627ehf_data *data = i2c_get_clientdata(client); - u8 reg; - - switch (nr) { - case 0: - reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf) - | ((data->fan_div[0] & 0x03) << 4); - w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); - reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf) - | ((data->fan_div[0] & 0x04) << 3); - w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); - break; - case 1: - reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f) - | ((data->fan_div[1] & 0x03) << 6); - w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); - reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf) - | ((data->fan_div[1] & 0x04) << 4); - w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); - break; - case 2: - reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f) - | ((data->fan_div[2] & 0x03) << 6); - w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg); - reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f) - | ((data->fan_div[2] & 0x04) << 5); - w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); - break; - case 3: - reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc) - | (data->fan_div[3] & 0x03); - w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); - reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f) - | ((data->fan_div[3] & 0x04) << 5); - w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg); - break; - case 4: - reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73) - | ((data->fan_div[4] & 0x03) << 3) - | ((data->fan_div[4] & 0x04) << 5); - w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); - break; - } -} - -static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) -{ - struct i2c_client *client = to_i2c_client(dev); - struct w83627ehf_data *data = i2c_get_clientdata(client); - int i; - - down(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ) - || !data->valid) { - /* Fan clock dividers */ - i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); - data->fan_div[0] = (i >> 4) & 0x03; - data->fan_div[1] = (i >> 6) & 0x03; - i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2); - data->fan_div[2] = (i >> 6) & 0x03; - i = w83627ehf_read_value(client, W83627EHF_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->has_fan & ((1 << 3) | (1 << 4))) { - i = w83627ehf_read_value(client, W83627EHF_REG_DIODE); - data->fan_div[3] = i & 0x03; - data->fan_div[4] = ((i >> 2) & 0x03) - | ((i >> 5) & 0x04); - } - if (data->has_fan & (1 << 3)) { - i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT); - data->fan_div[3] |= (i >> 5) & 0x04; - } - - /* Measured fan speeds and limits */ - for (i = 0; i < 5; i++) { - if (!(data->has_fan & (1 << i))) - continue; - - data->fan[i] = w83627ehf_read_value(client, - W83627EHF_REG_FAN[i]); - data->fan_min[i] = w83627ehf_read_value(client, - W83627EHF_REG_FAN_MIN[i]); - - /* If we failed to measure the fan speed and clock - divider can be increased, let's try that for next - time */ - if (data->fan[i] == 0xff - && data->fan_div[i] < 0x07) { - dev_dbg(&client->dev, "Increasing fan %d " - "clock divider from %u to %u\n", - i, div_from_reg(data->fan_div[i]), - div_from_reg(data->fan_div[i] + 1)); - data->fan_div[i]++; - w83627ehf_write_fan_div(client, i); - /* Preserve min limit if possible */ - if (data->fan_min[i] >= 2 - && data->fan_min[i] != 255) - w83627ehf_write_value(client, - W83627EHF_REG_FAN_MIN[i], - (data->fan_min[i] /= 2)); - } - } - - /* Measured temperatures and limits */ - data->temp1 = w83627ehf_read_value(client, - W83627EHF_REG_TEMP1); - data->temp1_max = w83627ehf_read_value(client, - W83627EHF_REG_TEMP1_OVER); - data->temp1_max_hyst = w83627ehf_read_value(client, - W83627EHF_REG_TEMP1_HYST); - for (i = 0; i < 2; i++) { - data->temp[i] = w83627ehf_read_value(client, - W83627EHF_REG_TEMP[i]); - data->temp_max[i] = w83627ehf_read_value(client, - W83627EHF_REG_TEMP_OVER[i]); - data->temp_max_hyst[i] = w83627ehf_read_value(client, - W83627EHF_REG_TEMP_HYST[i]); - } - - data->last_updated = jiffies; - data->valid = 1; - } - - up(&data->update_lock); - return data; -} - -/* - * Sysfs callback functions - */ - -#define show_fan_reg(reg) \ -static ssize_t \ -show_##reg(struct device *dev, char *buf, int nr) \ -{ \ - struct w83627ehf_data *data = w83627ehf_update_device(dev); \ - return sprintf(buf, "%d\n", \ - fan_from_reg(data->reg[nr], \ - div_from_reg(data->fan_div[nr]))); \ -} -show_fan_reg(fan); -show_fan_reg(fan_min); - -static ssize_t -show_fan_div(struct device *dev, char *buf, int nr) -{ - struct w83627ehf_data *data = w83627ehf_update_device(dev); - return sprintf(buf, "%u\n", - div_from_reg(data->fan_div[nr])); -} - -static ssize_t -store_fan_min(struct device *dev, const char *buf, size_t count, int nr) -{ - struct i2c_client *client = to_i2c_client(dev); - struct w83627ehf_data *data = i2c_get_clientdata(client); - unsigned int val = simple_strtoul(buf, NULL, 10); - unsigned int reg; - u8 new_div; - - down(&data->update_lock); - if (!val) { - /* No min limit, alarm disabled */ - data->fan_min[nr] = 255; - new_div = data->fan_div[nr]; /* No change */ - dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); - } else if ((reg = 1350000U / val) >= 128 * 255) { - /* Speed below this value cannot possibly be represented, - even with the highest divider (128) */ - data->fan_min[nr] = 254; - new_div = 7; /* 128 == (1 << 7) */ - dev_warn(dev, "fan%u low limit %u below minimum %u, set to " - "minimum\n", nr + 1, val, fan_from_reg(254, 128)); - } else if (!reg) { - /* Speed above this value cannot possibly be represented, - even with the lowest divider (1) */ - data->fan_min[nr] = 1; - new_div = 0; /* 1 == (1 << 0) */ - dev_warn(dev, "fan%u low limit %u above maximum %u, set to " - "maximum\n", nr + 1, val, fan_from_reg(1, 1)); - } else { - /* Automatically pick the best divider, i.e. the one such - that the min limit will correspond to a register value - in the 96..192 range */ - new_div = 0; - while (reg > 192 && new_div < 7) { - reg >>= 1; - new_div++; - } - data->fan_min[nr] = reg; - } - - /* Write both the fan clock divider (if it changed) and the new - fan min (unconditionally) */ - if (new_div != data->fan_div[nr]) { - if (new_div > data->fan_div[nr]) - data->fan[nr] >>= (data->fan_div[nr] - new_div); - else - data->fan[nr] <<= (new_div - data->fan_div[nr]); - - dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", - nr + 1, div_from_reg(data->fan_div[nr]), - div_from_reg(new_div)); - data->fan_div[nr] = new_div; - w83627ehf_write_fan_div(client, nr); - } - w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr], - data->fan_min[nr]); - up(&data->update_lock); - - return count; -} - -#define sysfs_fan_offset(offset) \ -static ssize_t \ -show_reg_fan_##offset(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_fan(dev, buf, offset-1); \ -} \ -static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ - show_reg_fan_##offset, NULL); - -#define sysfs_fan_min_offset(offset) \ -static ssize_t \ -show_reg_fan##offset##_min(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_fan_min(dev, buf, offset-1); \ -} \ -static ssize_t \ -store_reg_fan##offset##_min(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - return store_fan_min(dev, buf, count, offset-1); \ -} \ -static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ - show_reg_fan##offset##_min, \ - store_reg_fan##offset##_min); - -#define sysfs_fan_div_offset(offset) \ -static ssize_t \ -show_reg_fan##offset##_div(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_fan_div(dev, buf, offset - 1); \ -} \ -static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \ - show_reg_fan##offset##_div, NULL); - -sysfs_fan_offset(1); -sysfs_fan_min_offset(1); -sysfs_fan_div_offset(1); -sysfs_fan_offset(2); -sysfs_fan_min_offset(2); -sysfs_fan_div_offset(2); -sysfs_fan_offset(3); -sysfs_fan_min_offset(3); -sysfs_fan_div_offset(3); -sysfs_fan_offset(4); -sysfs_fan_min_offset(4); -sysfs_fan_div_offset(4); -sysfs_fan_offset(5); -sysfs_fan_min_offset(5); -sysfs_fan_div_offset(5); - -#define show_temp1_reg(reg) \ -static ssize_t \ -show_##reg(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - struct w83627ehf_data *data = w83627ehf_update_device(dev); \ - return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \ -} -show_temp1_reg(temp1); -show_temp1_reg(temp1_max); -show_temp1_reg(temp1_max_hyst); - -#define store_temp1_reg(REG, reg) \ -static ssize_t \ -store_temp1_##reg(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - struct i2c_client *client = to_i2c_client(dev); \ - struct w83627ehf_data *data = i2c_get_clientdata(client); \ - u32 val = simple_strtoul(buf, NULL, 10); \ - \ - down(&data->update_lock); \ - data->temp1_##reg = temp1_to_reg(val); \ - w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \ - data->temp1_##reg); \ - up(&data->update_lock); \ - return count; \ -} -store_temp1_reg(OVER, max); -store_temp1_reg(HYST, max_hyst); - -static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL); -static DEVICE_ATTR(temp1_max, S_IRUGO| S_IWUSR, - show_temp1_max, store_temp1_max); -static DEVICE_ATTR(temp1_max_hyst, S_IRUGO| S_IWUSR, - show_temp1_max_hyst, store_temp1_max_hyst); - -#define show_temp_reg(reg) \ -static ssize_t \ -show_##reg (struct device *dev, char *buf, int nr) \ -{ \ - struct w83627ehf_data *data = w83627ehf_update_device(dev); \ - return sprintf(buf, "%d\n", \ - LM75_TEMP_FROM_REG(data->reg[nr])); \ -} -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_##reg (struct device *dev, const char *buf, size_t count, int nr) \ -{ \ - struct i2c_client *client = to_i2c_client(dev); \ - struct w83627ehf_data *data = i2c_get_clientdata(client); \ - u32 val = simple_strtoul(buf, NULL, 10); \ - \ - down(&data->update_lock); \ - data->reg[nr] = LM75_TEMP_TO_REG(val); \ - w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \ - data->reg[nr]); \ - up(&data->update_lock); \ - return count; \ -} -store_temp_reg(OVER, temp_max); -store_temp_reg(HYST, temp_max_hyst); - -#define sysfs_temp_offset(offset) \ -static ssize_t \ -show_reg_temp##offset (struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_temp(dev, buf, offset - 2); \ -} \ -static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ - show_reg_temp##offset, NULL); - -#define sysfs_temp_reg_offset(reg, offset) \ -static ssize_t \ -show_reg_temp##offset##_##reg(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_temp_##reg(dev, buf, offset - 2); \ -} \ -static ssize_t \ -store_reg_temp##offset##_##reg(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - return store_temp_##reg(dev, buf, count, offset - 2); \ -} \ -static DEVICE_ATTR(temp##offset##_##reg, S_IRUGO| S_IWUSR, \ - show_reg_temp##offset##_##reg, \ - store_reg_temp##offset##_##reg); - -sysfs_temp_offset(2); -sysfs_temp_reg_offset(max, 2); -sysfs_temp_reg_offset(max_hyst, 2); -sysfs_temp_offset(3); -sysfs_temp_reg_offset(max, 3); -sysfs_temp_reg_offset(max_hyst, 3); - -/* - * Driver and client management - */ - -static struct i2c_driver w83627ehf_driver; - -static void w83627ehf_init_client(struct i2c_client *client) -{ - int i; - u8 tmp; - - /* Start monitoring is needed */ - tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG); - if (!(tmp & 0x01)) - w83627ehf_write_value(client, W83627EHF_REG_CONFIG, - tmp | 0x01); - - /* Enable temp2 and temp3 if needed */ - for (i = 0; i < 2; i++) { - tmp = w83627ehf_read_value(client, - W83627EHF_REG_TEMP_CONFIG[i]); - if (tmp & 0x01) - w83627ehf_write_value(client, - W83627EHF_REG_TEMP_CONFIG[i], - tmp & 0xfe); - } -} - -static int w83627ehf_detect(struct i2c_adapter *adapter, int address, int kind) -{ - struct i2c_client *client; - struct w83627ehf_data *data; - int i, err = 0; - - if (!i2c_is_isa_adapter(adapter)) - return 0; - - if (!request_region(address, REGION_LENGTH, w83627ehf_driver.name)) { - err = -EBUSY; - goto exit; - } - - if (!(data = kmalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { - err = -ENOMEM; - goto exit_release; - } - memset(data, 0, sizeof(struct w83627ehf_data)); - - client = &data->client; - i2c_set_clientdata(client, data); - client->addr = address; - init_MUTEX(&data->lock); - client->adapter = adapter; - client->driver = &w83627ehf_driver; - client->flags = 0; - - strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE); - data->valid = 0; - init_MUTEX(&data->update_lock); - - /* Tell the i2c layer a new client has arrived */ - if ((err = i2c_attach_client(client))) - goto exit_free; - - /* Initialize the chip */ - w83627ehf_init_client(client); - - /* A few vars need to be filled upon startup */ - for (i = 0; i < 5; i++) - data->fan_min[i] = w83627ehf_read_value(client, - W83627EHF_REG_FAN_MIN[i]); - - /* It looks like fan4 and fan5 pins can be alternatively used - as fan on/off switches */ - data->has_fan = 0x07; /* fan1, fan2 and fan3 */ - i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); - if (i & (1 << 2)) - data->has_fan |= (1 << 3); - if (i & (1 << 0)) - data->has_fan |= (1 << 4); - - /* Register sysfs hooks */ - device_create_file(&client->dev, &dev_attr_fan1_input); - device_create_file(&client->dev, &dev_attr_fan1_min); - device_create_file(&client->dev, &dev_attr_fan1_div); - device_create_file(&client->dev, &dev_attr_fan2_input); - device_create_file(&client->dev, &dev_attr_fan2_min); - device_create_file(&client->dev, &dev_attr_fan2_div); - device_create_file(&client->dev, &dev_attr_fan3_input); - device_create_file(&client->dev, &dev_attr_fan3_min); - device_create_file(&client->dev, &dev_attr_fan3_div); - - if (data->has_fan & (1 << 3)) { - device_create_file(&client->dev, &dev_attr_fan4_input); - device_create_file(&client->dev, &dev_attr_fan4_min); - device_create_file(&client->dev, &dev_attr_fan4_div); - } - if (data->has_fan & (1 << 4)) { - device_create_file(&client->dev, &dev_attr_fan5_input); - device_create_file(&client->dev, &dev_attr_fan5_min); - device_create_file(&client->dev, &dev_attr_fan5_div); - } - - device_create_file(&client->dev, &dev_attr_temp1_input); - device_create_file(&client->dev, &dev_attr_temp1_max); - device_create_file(&client->dev, &dev_attr_temp1_max_hyst); - device_create_file(&client->dev, &dev_attr_temp2_input); - device_create_file(&client->dev, &dev_attr_temp2_max); - device_create_file(&client->dev, &dev_attr_temp2_max_hyst); - device_create_file(&client->dev, &dev_attr_temp3_input); - device_create_file(&client->dev, &dev_attr_temp3_max); - device_create_file(&client->dev, &dev_attr_temp3_max_hyst); - - return 0; - -exit_free: - kfree(data); -exit_release: - release_region(address, REGION_LENGTH); -exit: - return err; -} - -static int w83627ehf_attach_adapter(struct i2c_adapter *adapter) -{ - if (!(adapter->class & I2C_CLASS_HWMON)) - return 0; - return i2c_detect(adapter, &addr_data, w83627ehf_detect); -} - -static int w83627ehf_detach_client(struct i2c_client *client) -{ - int err; - - if ((err = i2c_detach_client(client))) { - dev_err(&client->dev, "Client deregistration failed, " - "client not detached.\n"); - return err; - } - release_region(client->addr, REGION_LENGTH); - kfree(i2c_get_clientdata(client)); - - return 0; -} - -static struct i2c_driver w83627ehf_driver = { - .owner = THIS_MODULE, - .name = "w83627ehf", - .flags = I2C_DF_NOTIFY, - .attach_adapter = w83627ehf_attach_adapter, - .detach_client = w83627ehf_detach_client, -}; - -static int __init w83627ehf_find(int sioaddr, int *address) -{ - u16 val; - - REG = sioaddr; - VAL = sioaddr + 1; - superio_enter(); - - val = (superio_inb(SIO_REG_DEVID) << 8) - | superio_inb(SIO_REG_DEVID + 1); - if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) { - superio_exit(); - return -ENODEV; - } - - superio_select(W83627EHF_LD_HWM); - val = (superio_inb(SIO_REG_ADDR) << 8) - | superio_inb(SIO_REG_ADDR + 1); - *address = val & ~(REGION_LENGTH - 1); - if (*address == 0) { - superio_exit(); - return -ENODEV; - } - - /* Activate logical device if needed */ - val = superio_inb(SIO_REG_ENABLE); - if (!(val & 0x01)) - superio_outb(SIO_REG_ENABLE, val | 0x01); - - superio_exit(); - return 0; -} - -static int __init sensors_w83627ehf_init(void) -{ - if (w83627ehf_find(0x2e, &normal_isa[0]) - && w83627ehf_find(0x4e, &normal_isa[0])) - return -ENODEV; - - return i2c_add_driver(&w83627ehf_driver); -} - -static void __exit sensors_w83627ehf_exit(void) -{ - i2c_del_driver(&w83627ehf_driver); -} - -MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); -MODULE_DESCRIPTION("W83627EHF driver"); -MODULE_LICENSE("GPL"); - -module_init(sensors_w83627ehf_init); -module_exit(sensors_w83627ehf_exit); |