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Diffstat (limited to 'drivers/i2c/chips/adm1021.c')
-rw-r--r--drivers/i2c/chips/adm1021.c402
1 files changed, 0 insertions, 402 deletions
diff --git a/drivers/i2c/chips/adm1021.c b/drivers/i2c/chips/adm1021.c
deleted file mode 100644
index d2c774c32f4..00000000000
--- a/drivers/i2c/chips/adm1021.c
+++ /dev/null
@@ -1,402 +0,0 @@
-/*
- adm1021.c - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
- Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and
- Philip Edelbrock <phil@netroedge.com>
-
- 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>
-
-
-/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x18, 0x19, 0x1a,
- 0x29, 0x2a, 0x2b,
- 0x4c, 0x4d, 0x4e,
- I2C_CLIENT_END };
-static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
-
-/* Insmod parameters */
-SENSORS_INSMOD_8(adm1021, adm1023, max1617, max1617a, thmc10, lm84, gl523sm, mc1066);
-
-/* adm1021 constants specified below */
-
-/* The adm1021 registers */
-/* Read-only */
-#define ADM1021_REG_TEMP 0x00
-#define ADM1021_REG_REMOTE_TEMP 0x01
-#define ADM1021_REG_STATUS 0x02
-#define ADM1021_REG_MAN_ID 0x0FE /* 0x41 = AMD, 0x49 = TI, 0x4D = Maxim, 0x23 = Genesys , 0x54 = Onsemi*/
-#define ADM1021_REG_DEV_ID 0x0FF /* ADM1021 = 0x0X, ADM1023 = 0x3X */
-#define ADM1021_REG_DIE_CODE 0x0FF /* MAX1617A */
-/* These use different addresses for reading/writing */
-#define ADM1021_REG_CONFIG_R 0x03
-#define ADM1021_REG_CONFIG_W 0x09
-#define ADM1021_REG_CONV_RATE_R 0x04
-#define ADM1021_REG_CONV_RATE_W 0x0A
-/* These are for the ADM1023's additional precision on the remote temp sensor */
-#define ADM1021_REG_REM_TEMP_PREC 0x010
-#define ADM1021_REG_REM_OFFSET 0x011
-#define ADM1021_REG_REM_OFFSET_PREC 0x012
-#define ADM1021_REG_REM_TOS_PREC 0x013
-#define ADM1021_REG_REM_THYST_PREC 0x014
-/* limits */
-#define ADM1021_REG_TOS_R 0x05
-#define ADM1021_REG_TOS_W 0x0B
-#define ADM1021_REG_REMOTE_TOS_R 0x07
-#define ADM1021_REG_REMOTE_TOS_W 0x0D
-#define ADM1021_REG_THYST_R 0x06
-#define ADM1021_REG_THYST_W 0x0C
-#define ADM1021_REG_REMOTE_THYST_R 0x08
-#define ADM1021_REG_REMOTE_THYST_W 0x0E
-/* write-only */
-#define ADM1021_REG_ONESHOT 0x0F
-
-
-/* Conversions. Rounding and limit checking is only done on the TO_REG
- variants. Note that you should be a bit careful with which arguments
- these macros are called: arguments may be evaluated more than once.
- Fixing this is just not worth it. */
-/* Conversions note: 1021 uses normal integer signed-byte format*/
-#define TEMP_FROM_REG(val) (val > 127 ? (val-256)*1000 : val*1000)
-#define TEMP_TO_REG(val) (SENSORS_LIMIT((val < 0 ? (val/1000)+256 : val/1000),0,255))
-
-/* Initial values */
-
-/* Note: Even though I left the low and high limits named os and hyst,
-they don't quite work like a thermostat the way the LM75 does. I.e.,
-a lower temp than THYST actually triggers an alarm instead of
-clearing it. Weird, ey? --Phil */
-
-/* Each client has this additional data */
-struct adm1021_data {
- struct i2c_client client;
- enum chips type;
-
- struct semaphore update_lock;
- char valid; /* !=0 if following fields are valid */
- unsigned long last_updated; /* In jiffies */
-
- u8 temp_max; /* Register values */
- u8 temp_hyst;
- u8 temp_input;
- u8 remote_temp_max;
- u8 remote_temp_hyst;
- u8 remote_temp_input;
- u8 alarms;
- /* Special values for ADM1023 only */
- u8 remote_temp_prec;
- u8 remote_temp_os_prec;
- u8 remote_temp_hyst_prec;
- u8 remote_temp_offset;
- u8 remote_temp_offset_prec;
-};
-
-static int adm1021_attach_adapter(struct i2c_adapter *adapter);
-static int adm1021_detect(struct i2c_adapter *adapter, int address, int kind);
-static void adm1021_init_client(struct i2c_client *client);
-static int adm1021_detach_client(struct i2c_client *client);
-static int adm1021_read_value(struct i2c_client *client, u8 reg);
-static int adm1021_write_value(struct i2c_client *client, u8 reg,
- u16 value);
-static struct adm1021_data *adm1021_update_device(struct device *dev);
-
-/* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */
-static int read_only = 0;
-
-
-/* This is the driver that will be inserted */
-static struct i2c_driver adm1021_driver = {
- .owner = THIS_MODULE,
- .name = "adm1021",
- .id = I2C_DRIVERID_ADM1021,
- .flags = I2C_DF_NOTIFY,
- .attach_adapter = adm1021_attach_adapter,
- .detach_client = adm1021_detach_client,
-};
-
-#define show(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct adm1021_data *data = adm1021_update_device(dev); \
- return sprintf(buf, "%d\n", TEMP_FROM_REG(data->value)); \
-}
-show(temp_max);
-show(temp_hyst);
-show(temp_input);
-show(remote_temp_max);
-show(remote_temp_hyst);
-show(remote_temp_input);
-
-#define show2(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct adm1021_data *data = adm1021_update_device(dev); \
- return sprintf(buf, "%d\n", data->value); \
-}
-show2(alarms);
-
-#define set(value, reg) \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
-{ \
- struct i2c_client *client = to_i2c_client(dev); \
- struct adm1021_data *data = i2c_get_clientdata(client); \
- int temp = simple_strtoul(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- data->value = TEMP_TO_REG(temp); \
- adm1021_write_value(client, reg, data->value); \
- up(&data->update_lock); \
- return count; \
-}
-set(temp_max, ADM1021_REG_TOS_W);
-set(temp_hyst, ADM1021_REG_THYST_W);
-set(remote_temp_max, ADM1021_REG_REMOTE_TOS_W);
-set(remote_temp_hyst, ADM1021_REG_REMOTE_THYST_W);
-
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, set_temp_max);
-static DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_hyst, set_temp_hyst);
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL);
-static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_remote_temp_max, set_remote_temp_max);
-static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_remote_temp_hyst, set_remote_temp_hyst);
-static DEVICE_ATTR(temp2_input, S_IRUGO, show_remote_temp_input, NULL);
-static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
-
-
-static int adm1021_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_detect(adapter, &addr_data, adm1021_detect);
-}
-
-static int adm1021_detect(struct i2c_adapter *adapter, int address, int kind)
-{
- int i;
- struct i2c_client *new_client;
- struct adm1021_data *data;
- int err = 0;
- const char *type_name = "";
-
- /* Make sure we aren't probing the ISA bus!! This is just a safety check
- at this moment; i2c_detect really won't call us. */
-#ifdef DEBUG
- if (i2c_is_isa_adapter(adapter)) {
- dev_dbg(&adapter->dev, "adm1021_detect called for an ISA bus adapter?!?\n");
- return 0;
- }
-#endif
-
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto error0;
-
- /* 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 adm1021_{read,write}_value. */
-
- if (!(data = kmalloc(sizeof(struct adm1021_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto error0;
- }
- memset(data, 0, sizeof(struct adm1021_data));
-
- new_client = &data->client;
- i2c_set_clientdata(new_client, data);
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &adm1021_driver;
- new_client->flags = 0;
-
- /* Now, we do the remaining detection. */
- if (kind < 0) {
- if ((adm1021_read_value(new_client, ADM1021_REG_STATUS) & 0x03) != 0x00
- || (adm1021_read_value(new_client, ADM1021_REG_CONFIG_R) & 0x3F) != 0x00
- || (adm1021_read_value(new_client, ADM1021_REG_CONV_RATE_R) & 0xF8) != 0x00) {
- err = -ENODEV;
- goto error1;
- }
- }
-
- /* Determine the chip type. */
- if (kind <= 0) {
- i = adm1021_read_value(new_client, ADM1021_REG_MAN_ID);
- if (i == 0x41)
- if ((adm1021_read_value(new_client, ADM1021_REG_DEV_ID) & 0x0F0) == 0x030)
- kind = adm1023;
- else
- kind = adm1021;
- else if (i == 0x49)
- kind = thmc10;
- else if (i == 0x23)
- kind = gl523sm;
- else if ((i == 0x4d) &&
- (adm1021_read_value(new_client, ADM1021_REG_DEV_ID) == 0x01))
- kind = max1617a;
- else if (i == 0x54)
- kind = mc1066;
- /* LM84 Mfr ID in a different place, and it has more unused bits */
- else if (adm1021_read_value(new_client, ADM1021_REG_CONV_RATE_R) == 0x00
- && (kind == 0 /* skip extra detection */
- || ((adm1021_read_value(new_client, ADM1021_REG_CONFIG_R) & 0x7F) == 0x00
- && (adm1021_read_value(new_client, ADM1021_REG_STATUS) & 0xAB) == 0x00)))
- kind = lm84;
- else
- kind = max1617;
- }
-
- if (kind == max1617) {
- type_name = "max1617";
- } else if (kind == max1617a) {
- type_name = "max1617a";
- } else if (kind == adm1021) {
- type_name = "adm1021";
- } else if (kind == adm1023) {
- type_name = "adm1023";
- } else if (kind == thmc10) {
- type_name = "thmc10";
- } else if (kind == lm84) {
- type_name = "lm84";
- } else if (kind == gl523sm) {
- type_name = "gl523sm";
- } else if (kind == mc1066) {
- type_name = "mc1066";
- }
-
- /* Fill in the remaining client fields and put it into the global list */
- strlcpy(new_client->name, type_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 error1;
-
- /* Initialize the ADM1021 chip */
- if (kind != lm84)
- adm1021_init_client(new_client);
-
- /* Register sysfs hooks */
- device_create_file(&new_client->dev, &dev_attr_temp1_max);
- device_create_file(&new_client->dev, &dev_attr_temp1_min);
- device_create_file(&new_client->dev, &dev_attr_temp1_input);
- device_create_file(&new_client->dev, &dev_attr_temp2_max);
- device_create_file(&new_client->dev, &dev_attr_temp2_min);
- device_create_file(&new_client->dev, &dev_attr_temp2_input);
- device_create_file(&new_client->dev, &dev_attr_alarms);
-
- return 0;
-
-error1:
- kfree(data);
-error0:
- return err;
-}
-
-static void adm1021_init_client(struct i2c_client *client)
-{
- /* Enable ADC and disable suspend mode */
- adm1021_write_value(client, ADM1021_REG_CONFIG_W,
- adm1021_read_value(client, ADM1021_REG_CONFIG_R) & 0xBF);
- /* Set Conversion rate to 1/sec (this can be tinkered with) */
- adm1021_write_value(client, ADM1021_REG_CONV_RATE_W, 0x04);
-}
-
-static int adm1021_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;
- }
-
- kfree(i2c_get_clientdata(client));
- return 0;
-}
-
-/* All registers are byte-sized */
-static int adm1021_read_value(struct i2c_client *client, u8 reg)
-{
- return i2c_smbus_read_byte_data(client, reg);
-}
-
-static int adm1021_write_value(struct i2c_client *client, u8 reg, u16 value)
-{
- if (!read_only)
- return i2c_smbus_write_byte_data(client, reg, value);
- return 0;
-}
-
-static struct adm1021_data *adm1021_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct adm1021_data *data = i2c_get_clientdata(client);
-
- down(&data->update_lock);
-
- if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
- || !data->valid) {
- dev_dbg(&client->dev, "Starting adm1021 update\n");
-
- data->temp_input = adm1021_read_value(client, ADM1021_REG_TEMP);
- data->temp_max = adm1021_read_value(client, ADM1021_REG_TOS_R);
- data->temp_hyst = adm1021_read_value(client, ADM1021_REG_THYST_R);
- data->remote_temp_input = adm1021_read_value(client, ADM1021_REG_REMOTE_TEMP);
- data->remote_temp_max = adm1021_read_value(client, ADM1021_REG_REMOTE_TOS_R);
- data->remote_temp_hyst = adm1021_read_value(client, ADM1021_REG_REMOTE_THYST_R);
- data->alarms = adm1021_read_value(client, ADM1021_REG_STATUS) & 0x7c;
- if (data->type == adm1023) {
- data->remote_temp_prec = adm1021_read_value(client, ADM1021_REG_REM_TEMP_PREC);
- data->remote_temp_os_prec = adm1021_read_value(client, ADM1021_REG_REM_TOS_PREC);
- data->remote_temp_hyst_prec = adm1021_read_value(client, ADM1021_REG_REM_THYST_PREC);
- data->remote_temp_offset = adm1021_read_value(client, ADM1021_REG_REM_OFFSET);
- data->remote_temp_offset_prec = adm1021_read_value(client, ADM1021_REG_REM_OFFSET_PREC);
- }
- data->last_updated = jiffies;
- data->valid = 1;
- }
-
- up(&data->update_lock);
-
- return data;
-}
-
-static int __init sensors_adm1021_init(void)
-{
- return i2c_add_driver(&adm1021_driver);
-}
-
-static void __exit sensors_adm1021_exit(void)
-{
- i2c_del_driver(&adm1021_driver);
-}
-
-MODULE_AUTHOR ("Frodo Looijaard <frodol@dds.nl> and "
- "Philip Edelbrock <phil@netroedge.com>");
-MODULE_DESCRIPTION("adm1021 driver");
-MODULE_LICENSE("GPL");
-
-module_param(read_only, bool, 0);
-MODULE_PARM_DESC(read_only, "Don't set any values, read only mode");
-
-module_init(sensors_adm1021_init)
-module_exit(sensors_adm1021_exit)
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