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path: root/drivers/i2c/chips/lm78.c
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Diffstat (limited to 'drivers/i2c/chips/lm78.c')
-rw-r--r--drivers/i2c/chips/lm78.c795
1 files changed, 0 insertions, 795 deletions
diff --git a/drivers/i2c/chips/lm78.c b/drivers/i2c/chips/lm78.c
deleted file mode 100644
index 29241469dcba..000000000000
--- a/drivers/i2c/chips/lm78.c
+++ /dev/null
@@ -1,795 +0,0 @@
-/*
- lm78.c - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
- Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
-#include <linux/i2c.h>
-#include <linux/i2c-sensor.h>
-#include <asm/io.h>
-
-/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24,
- 0x25, 0x26, 0x27, 0x28, 0x29,
- 0x2a, 0x2b, 0x2c, 0x2d, 0x2e,
- 0x2f, I2C_CLIENT_END };
-static unsigned int normal_isa[] = { 0x0290, I2C_CLIENT_ISA_END };
-
-/* Insmod parameters */
-SENSORS_INSMOD_3(lm78, lm78j, lm79);
-
-/* Many LM78 constants specified below */
-
-/* Length of ISA address segment */
-#define LM78_EXTENT 8
-
-/* Where are the ISA address/data registers relative to the base address */
-#define LM78_ADDR_REG_OFFSET 5
-#define LM78_DATA_REG_OFFSET 6
-
-/* The LM78 registers */
-#define LM78_REG_IN_MAX(nr) (0x2b + (nr) * 2)
-#define LM78_REG_IN_MIN(nr) (0x2c + (nr) * 2)
-#define LM78_REG_IN(nr) (0x20 + (nr))
-
-#define LM78_REG_FAN_MIN(nr) (0x3b + (nr))
-#define LM78_REG_FAN(nr) (0x28 + (nr))
-
-#define LM78_REG_TEMP 0x27
-#define LM78_REG_TEMP_OVER 0x39
-#define LM78_REG_TEMP_HYST 0x3a
-
-#define LM78_REG_ALARM1 0x41
-#define LM78_REG_ALARM2 0x42
-
-#define LM78_REG_VID_FANDIV 0x47
-
-#define LM78_REG_CONFIG 0x40
-#define LM78_REG_CHIPID 0x49
-#define LM78_REG_I2C_ADDR 0x48
-
-
-/* Conversions. Rounding and limit checking is only done on the TO_REG
- variants. */
-
-/* IN: mV, (0V to 4.08V)
- REG: 16mV/bit */
-static inline u8 IN_TO_REG(unsigned long val)
-{
- unsigned long nval = SENSORS_LIMIT(val, 0, 4080);
- return (nval + 8) / 16;
-}
-#define IN_FROM_REG(val) ((val) * 16)
-
-static inline u8 FAN_TO_REG(long rpm, int div)
-{
- if (rpm <= 0)
- return 255;
- return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
-}
-
-static inline int FAN_FROM_REG(u8 val, int div)
-{
- return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
-}
-
-/* TEMP: mC (-128C to +127C)
- REG: 1C/bit, two's complement */
-static inline s8 TEMP_TO_REG(int val)
-{
- int nval = SENSORS_LIMIT(val, -128000, 127000) ;
- return nval<0 ? (nval-500)/1000 : (nval+500)/1000;
-}
-
-static inline int TEMP_FROM_REG(s8 val)
-{
- return val * 1000;
-}
-
-/* VID: mV
- REG: (see doc/vid) */
-static inline int VID_FROM_REG(u8 val)
-{
- return val==0x1f ? 0 : val>=0x10 ? 5100-val*100 : 2050-val*50;
-}
-
-#define DIV_FROM_REG(val) (1 << (val))
-
-/* There are some complications in a module like this. First off, LM78 chips
- may be both present on the SMBus and the ISA bus, and we have to handle
- those cases separately at some places. Second, there might be several
- LM78 chips available (well, actually, that is probably never done; but
- it is a clean illustration of how to handle a case like that). Finally,
- a specific chip may be attached to *both* ISA and SMBus, and we would
- not like to detect it double. Fortunately, in the case of the LM78 at
- least, a register tells us what SMBus address we are on, so that helps
- a bit - except if there could be more than one SMBus. Groan. No solution
- for this yet. */
-
-/* This module may seem overly long and complicated. In fact, it is not so
- bad. Quite a lot of bookkeeping is done. A real driver can often cut
- some corners. */
-
-/* For each registered LM78, we need to keep some data in memory. That
- data is pointed to by lm78_list[NR]->data. The structure itself is
- dynamically allocated, at the same time when a new lm78 client is
- allocated. */
-struct lm78_data {
- struct i2c_client client;
- struct semaphore lock;
- enum chips type;
-
- struct semaphore update_lock;
- char valid; /* !=0 if following fields are valid */
- unsigned long last_updated; /* In jiffies */
-
- u8 in[7]; /* Register value */
- u8 in_max[7]; /* Register value */
- u8 in_min[7]; /* Register value */
- u8 fan[3]; /* Register value */
- u8 fan_min[3]; /* Register value */
- s8 temp; /* Register value */
- s8 temp_over; /* Register value */
- s8 temp_hyst; /* Register value */
- u8 fan_div[3]; /* Register encoding, shifted right */
- u8 vid; /* Register encoding, combined */
- u16 alarms; /* Register encoding, combined */
-};
-
-
-static int lm78_attach_adapter(struct i2c_adapter *adapter);
-static int lm78_detect(struct i2c_adapter *adapter, int address, int kind);
-static int lm78_detach_client(struct i2c_client *client);
-
-static int lm78_read_value(struct i2c_client *client, u8 register);
-static int lm78_write_value(struct i2c_client *client, u8 register, u8 value);
-static struct lm78_data *lm78_update_device(struct device *dev);
-static void lm78_init_client(struct i2c_client *client);
-
-
-static struct i2c_driver lm78_driver = {
- .owner = THIS_MODULE,
- .name = "lm78",
- .id = I2C_DRIVERID_LM78,
- .flags = I2C_DF_NOTIFY,
- .attach_adapter = lm78_attach_adapter,
- .detach_client = lm78_detach_client,
-};
-
-/* 7 Voltages */
-static ssize_t show_in(struct device *dev, char *buf, int nr)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
-}
-
-static ssize_t show_in_min(struct device *dev, char *buf, int nr)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
-}
-
-static ssize_t show_in_max(struct device *dev, char *buf, int nr)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
-}
-
-static ssize_t set_in_min(struct device *dev, const char *buf,
- size_t count, int nr)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm78_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
-
- down(&data->update_lock);
- data->in_min[nr] = IN_TO_REG(val);
- lm78_write_value(client, LM78_REG_IN_MIN(nr), data->in_min[nr]);
- up(&data->update_lock);
- return count;
-}
-
-static ssize_t set_in_max(struct device *dev, const char *buf,
- size_t count, int nr)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm78_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
-
- down(&data->update_lock);
- data->in_max[nr] = IN_TO_REG(val);
- lm78_write_value(client, LM78_REG_IN_MAX(nr), data->in_max[nr]);
- up(&data->update_lock);
- return count;
-}
-
-#define show_in_offset(offset) \
-static ssize_t \
- show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_in(dev, buf, offset); \
-} \
-static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
- show_in##offset, NULL); \
-static ssize_t \
- show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_in_min(dev, buf, offset); \
-} \
-static ssize_t \
- show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_in_max(dev, buf, offset); \
-} \
-static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_in_min(dev, buf, count, offset); \
-} \
-static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_in_max(dev, buf, count, offset); \
-} \
-static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
- show_in##offset##_min, set_in##offset##_min); \
-static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
- show_in##offset##_max, set_in##offset##_max);
-
-show_in_offset(0);
-show_in_offset(1);
-show_in_offset(2);
-show_in_offset(3);
-show_in_offset(4);
-show_in_offset(5);
-show_in_offset(6);
-
-/* Temperature */
-static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
-}
-
-static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
-}
-
-static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm78_data *data = i2c_get_clientdata(client);
- long val = simple_strtol(buf, NULL, 10);
-
- down(&data->update_lock);
- data->temp_over = TEMP_TO_REG(val);
- lm78_write_value(client, LM78_REG_TEMP_OVER, data->temp_over);
- up(&data->update_lock);
- return count;
-}
-
-static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
-}
-
-static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm78_data *data = i2c_get_clientdata(client);
- long val = simple_strtol(buf, NULL, 10);
-
- down(&data->update_lock);
- data->temp_hyst = TEMP_TO_REG(val);
- lm78_write_value(client, LM78_REG_TEMP_HYST, data->temp_hyst);
- up(&data->update_lock);
- return count;
-}
-
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
-static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
- show_temp_over, set_temp_over);
-static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
- show_temp_hyst, set_temp_hyst);
-
-/* 3 Fans */
-static ssize_t show_fan(struct device *dev, char *buf, int nr)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
- DIV_FROM_REG(data->fan_div[nr])) );
-}
-
-static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
- DIV_FROM_REG(data->fan_div[nr])) );
-}
-
-static ssize_t set_fan_min(struct device *dev, const char *buf,
- size_t count, int nr)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm78_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
-
- down(&data->update_lock);
- data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
- lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
- return count;
-}
-
-static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
-}
-
-/* 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 suprise; the user doesn't expect the fan minimum to change just
- because the divisor changed. */
-static ssize_t set_fan_div(struct device *dev, const char *buf,
- size_t count, int nr)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm78_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
- unsigned long min;
- u8 reg;
-
- down(&data->update_lock);
- min = FAN_FROM_REG(data->fan_min[nr],
- DIV_FROM_REG(data->fan_div[nr]));
-
- switch (val) {
- case 1: data->fan_div[nr] = 0; break;
- case 2: data->fan_div[nr] = 1; break;
- case 4: data->fan_div[nr] = 2; break;
- case 8: data->fan_div[nr] = 3; break;
- default:
- dev_err(&client->dev, "fan_div value %ld not "
- "supported. Choose one of 1, 2, 4 or 8!\n", val);
- up(&data->update_lock);
- return -EINVAL;
- }
-
- reg = lm78_read_value(client, LM78_REG_VID_FANDIV);
- switch (nr) {
- case 0:
- reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
- break;
- case 1:
- reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
- break;
- }
- lm78_write_value(client, LM78_REG_VID_FANDIV, reg);
-
- data->fan_min[nr] =
- FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
- lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
-
- return count;
-}
-
-#define show_fan_offset(offset) \
-static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_fan(dev, buf, offset - 1); \
-} \
-static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_fan_min(dev, buf, offset - 1); \
-} \
-static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_fan_div(dev, buf, offset - 1); \
-} \
-static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_fan_min(dev, buf, count, offset - 1); \
-} \
-static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\
-static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
- show_fan_##offset##_min, set_fan_##offset##_min);
-
-static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
-{
- return set_fan_div(dev, buf, count, 0) ;
-}
-
-static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
-{
- return set_fan_div(dev, buf, count, 1) ;
-}
-
-show_fan_offset(1);
-show_fan_offset(2);
-show_fan_offset(3);
-
-/* Fan 3 divisor is locked in H/W */
-static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
- show_fan_1_div, set_fan_1_div);
-static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
- show_fan_2_div, set_fan_2_div);
-static DEVICE_ATTR(fan3_div, S_IRUGO, show_fan_3_div, NULL);
-
-/* VID */
-static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", VID_FROM_REG(data->vid));
-}
-static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
-
-/* Alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%u\n", data->alarms);
-}
-static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
-
-/* This function is called when:
- * lm78_driver is inserted (when this module is loaded), for each
- available adapter
- * when a new adapter is inserted (and lm78_driver is still present) */
-static int lm78_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_detect(adapter, &addr_data, lm78_detect);
-}
-
-/* This function is called by i2c_detect */
-int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
-{
- int i, err;
- struct i2c_client *new_client;
- struct lm78_data *data;
- const char *client_name = "";
- int is_isa = i2c_is_isa_adapter(adapter);
-
- if (!is_isa &&
- !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
- err = -ENODEV;
- goto ERROR0;
- }
-
- /* Reserve the ISA region */
- if (is_isa)
- if (!request_region(address, LM78_EXTENT, lm78_driver.name)) {
- err = -EBUSY;
- goto ERROR0;
- }
-
- /* Probe whether there is anything available on this address. Already
- done for SMBus clients */
- if (kind < 0) {
- if (is_isa) {
-
-#define REALLY_SLOW_IO
- /* We need the timeouts for at least some LM78-like
- chips. But only if we read 'undefined' registers. */
- i = inb_p(address + 1);
- if (inb_p(address + 2) != i) {
- err = -ENODEV;
- goto ERROR1;
- }
- if (inb_p(address + 3) != i) {
- err = -ENODEV;
- goto ERROR1;
- }
- if (inb_p(address + 7) != i) {
- err = -ENODEV;
- goto ERROR1;
- }
-#undef REALLY_SLOW_IO
-
- /* Let's just hope nothing breaks here */
- i = inb_p(address + 5) & 0x7f;
- outb_p(~i & 0x7f, address + 5);
- if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) {
- outb_p(i, address + 5);
- err = -ENODEV;
- goto ERROR1;
- }
- }
- }
-
- /* OK. For now, we presume we have a valid client. We now create the
- client structure, even though we cannot fill it completely yet.
- But it allows us to access lm78_{read,write}_value. */
-
- if (!(data = kmalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto ERROR1;
- }
- memset(data, 0, sizeof(struct lm78_data));
-
- new_client = &data->client;
- if (is_isa)
- init_MUTEX(&data->lock);
- i2c_set_clientdata(new_client, data);
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &lm78_driver;
- new_client->flags = 0;
-
- /* Now, we do the remaining detection. */
- if (kind < 0) {
- if (lm78_read_value(new_client, LM78_REG_CONFIG) & 0x80) {
- err = -ENODEV;
- goto ERROR2;
- }
- if (!is_isa && (lm78_read_value(
- new_client, LM78_REG_I2C_ADDR) != address)) {
- err = -ENODEV;
- goto ERROR2;
- }
- }
-
- /* Determine the chip type. */
- if (kind <= 0) {
- i = lm78_read_value(new_client, LM78_REG_CHIPID);
- if (i == 0x00 || i == 0x20)
- kind = lm78;
- else if (i == 0x40)
- kind = lm78j;
- else if ((i & 0xfe) == 0xc0)
- kind = lm79;
- else {
- if (kind == 0)
- dev_warn(&adapter->dev, "Ignoring 'force' "
- "parameter for unknown chip at "
- "adapter %d, address 0x%02x\n",
- i2c_adapter_id(adapter), address);
- err = -ENODEV;
- goto ERROR2;
- }
- }
-
- if (kind == lm78) {
- client_name = "lm78";
- } else if (kind == lm78j) {
- client_name = "lm78-j";
- } else if (kind == lm79) {
- client_name = "lm79";
- }
-
- /* Fill in the remaining client fields and put into the global list */
- strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
- data->type = kind;
-
- data->valid = 0;
- init_MUTEX(&data->update_lock);
-
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(new_client)))
- goto ERROR2;
-
- /* Initialize the LM78 chip */
- lm78_init_client(new_client);
-
- /* A few vars need to be filled upon startup */
- for (i = 0; i < 3; i++) {
- data->fan_min[i] = lm78_read_value(new_client,
- LM78_REG_FAN_MIN(i));
- }
-
- /* Register sysfs hooks */
- device_create_file(&new_client->dev, &dev_attr_in0_input);
- device_create_file(&new_client->dev, &dev_attr_in0_min);
- device_create_file(&new_client->dev, &dev_attr_in0_max);
- device_create_file(&new_client->dev, &dev_attr_in1_input);
- device_create_file(&new_client->dev, &dev_attr_in1_min);
- device_create_file(&new_client->dev, &dev_attr_in1_max);
- device_create_file(&new_client->dev, &dev_attr_in2_input);
- device_create_file(&new_client->dev, &dev_attr_in2_min);
- device_create_file(&new_client->dev, &dev_attr_in2_max);
- device_create_file(&new_client->dev, &dev_attr_in3_input);
- device_create_file(&new_client->dev, &dev_attr_in3_min);
- device_create_file(&new_client->dev, &dev_attr_in3_max);
- device_create_file(&new_client->dev, &dev_attr_in4_input);
- device_create_file(&new_client->dev, &dev_attr_in4_min);
- device_create_file(&new_client->dev, &dev_attr_in4_max);
- device_create_file(&new_client->dev, &dev_attr_in5_input);
- device_create_file(&new_client->dev, &dev_attr_in5_min);
- device_create_file(&new_client->dev, &dev_attr_in5_max);
- device_create_file(&new_client->dev, &dev_attr_in6_input);
- device_create_file(&new_client->dev, &dev_attr_in6_min);
- device_create_file(&new_client->dev, &dev_attr_in6_max);
- device_create_file(&new_client->dev, &dev_attr_temp1_input);
- device_create_file(&new_client->dev, &dev_attr_temp1_max);
- device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
- device_create_file(&new_client->dev, &dev_attr_fan1_input);
- device_create_file(&new_client->dev, &dev_attr_fan1_min);
- device_create_file(&new_client->dev, &dev_attr_fan1_div);
- device_create_file(&new_client->dev, &dev_attr_fan2_input);
- device_create_file(&new_client->dev, &dev_attr_fan2_min);
- device_create_file(&new_client->dev, &dev_attr_fan2_div);
- device_create_file(&new_client->dev, &dev_attr_fan3_input);
- device_create_file(&new_client->dev, &dev_attr_fan3_min);
- device_create_file(&new_client->dev, &dev_attr_fan3_div);
- device_create_file(&new_client->dev, &dev_attr_alarms);
- device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
-
- return 0;
-
-ERROR2:
- kfree(data);
-ERROR1:
- if (is_isa)
- release_region(address, LM78_EXTENT);
-ERROR0:
- return err;
-}
-
-static int lm78_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;
- }
-
- if(i2c_is_isa_client(client))
- release_region(client->addr, LM78_EXTENT);
-
- kfree(i2c_get_clientdata(client));
-
- return 0;
-}
-
-/* The SMBus locks itself, but ISA access must be locked explicitly!
- We don't want to lock the whole ISA bus, so we lock each client
- separately.
- We ignore the LM78 BUSY flag at this moment - it could lead to deadlocks,
- would slow down the LM78 access and should not be necessary. */
-static int lm78_read_value(struct i2c_client *client, u8 reg)
-{
- int res;
- if (i2c_is_isa_client(client)) {
- struct lm78_data *data = i2c_get_clientdata(client);
- down(&data->lock);
- outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
- res = inb_p(client->addr + LM78_DATA_REG_OFFSET);
- up(&data->lock);
- return res;
- } else
- return i2c_smbus_read_byte_data(client, reg);
-}
-
-/* The SMBus locks itself, but ISA access muse be locked explicitly!
- We don't want to lock the whole ISA bus, so we lock each client
- separately.
- We ignore the LM78 BUSY flag at this moment - it could lead to deadlocks,
- would slow down the LM78 access and should not be necessary.
- There are some ugly typecasts here, but the good new is - they should
- nowhere else be necessary! */
-static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value)
-{
- if (i2c_is_isa_client(client)) {
- struct lm78_data *data = i2c_get_clientdata(client);
- down(&data->lock);
- outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
- outb_p(value, client->addr + LM78_DATA_REG_OFFSET);
- up(&data->lock);
- return 0;
- } else
- return i2c_smbus_write_byte_data(client, reg, value);
-}
-
-/* Called when we have found a new LM78. It should set limits, etc. */
-static void lm78_init_client(struct i2c_client *client)
-{
- u8 config = lm78_read_value(client, LM78_REG_CONFIG);
-
- /* Start monitoring */
- if (!(config & 0x01))
- lm78_write_value(client, LM78_REG_CONFIG,
- (config & 0xf7) | 0x01);
-}
-
-static struct lm78_data *lm78_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm78_data *data = i2c_get_clientdata(client);
- int i;
-
- down(&data->update_lock);
-
- if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
- || !data->valid) {
-
- dev_dbg(&client->dev, "Starting lm78 update\n");
-
- for (i = 0; i <= 6; i++) {
- data->in[i] =
- lm78_read_value(client, LM78_REG_IN(i));
- data->in_min[i] =
- lm78_read_value(client, LM78_REG_IN_MIN(i));
- data->in_max[i] =
- lm78_read_value(client, LM78_REG_IN_MAX(i));
- }
- for (i = 0; i < 3; i++) {
- data->fan[i] =
- lm78_read_value(client, LM78_REG_FAN(i));
- data->fan_min[i] =
- lm78_read_value(client, LM78_REG_FAN_MIN(i));
- }
- data->temp = lm78_read_value(client, LM78_REG_TEMP);
- data->temp_over =
- lm78_read_value(client, LM78_REG_TEMP_OVER);
- data->temp_hyst =
- lm78_read_value(client, LM78_REG_TEMP_HYST);
- i = lm78_read_value(client, LM78_REG_VID_FANDIV);
- data->vid = i & 0x0f;
- if (data->type == lm79)
- data->vid |=
- (lm78_read_value(client, LM78_REG_CHIPID) &
- 0x01) << 4;
- else
- data->vid |= 0x10;
- data->fan_div[0] = (i >> 4) & 0x03;
- data->fan_div[1] = i >> 6;
- data->alarms = lm78_read_value(client, LM78_REG_ALARM1) +
- (lm78_read_value(client, LM78_REG_ALARM2) << 8);
- data->last_updated = jiffies;
- data->valid = 1;
-
- data->fan_div[2] = 1;
- }
-
- up(&data->update_lock);
-
- return data;
-}
-
-static int __init sm_lm78_init(void)
-{
- return i2c_add_driver(&lm78_driver);
-}
-
-static void __exit sm_lm78_exit(void)
-{
- i2c_del_driver(&lm78_driver);
-}
-
-
-
-MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
-MODULE_DESCRIPTION("LM78, LM78-J and LM79 driver");
-MODULE_LICENSE("GPL");
-
-module_init(sm_lm78_init);
-module_exit(sm_lm78_exit);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-02 00:25:51 +0000