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Diffstat (limited to 'drivers/i2c/chips/w83627ehf.c')
-rw-r--r--drivers/i2c/chips/w83627ehf.c846
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 8a40b6976e1..00000000000
--- 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 02:50:55 +0000