aboutsummaryrefslogtreecommitdiff
path: root/drivers/i2c/chips/max1619.c
diff options
context:
space:
mode:
authorJean Delvare <khali@linux-fr.org>2005-07-02 18:20:26 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2005-07-11 14:42:50 -0700
commit8d5d45fb14680326f833295f2316a4ec5e357220 (patch)
tree3b29dbdea18dfecf33b18219c6c374316d99b88b /drivers/i2c/chips/max1619.c
parentad2f931dcb41bcfae38cc77d78b7821dfef83cf2 (diff)
[PATCH] I2C: Move hwmon drivers (2/3)
Part 2: Move the driver files themselves. Note that the patch "adds trailing whitespace", because it does move the files as-is, and some files happen to have trailing whitespace. From: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c/chips/max1619.c')
-rw-r--r--drivers/i2c/chips/max1619.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/drivers/i2c/chips/max1619.c b/drivers/i2c/chips/max1619.c
deleted file mode 100644
index bf553dcd97d..00000000000
--- a/drivers/i2c/chips/max1619.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * max1619.c - Part of lm_sensors, Linux kernel modules for hardware
- * monitoring
- * Copyright (C) 2003-2004 Alexey Fisher <fishor@mail.ru>
- * Jean Delvare <khali@linux-fr.org>
- *
- * Based on the lm90 driver. The MAX1619 is a sensor chip made by Maxim.
- * It reports up to two temperatures (its own plus up to
- * one external one). Complete datasheet can be
- * obtained from Maxim's website at:
- * http://pdfserv.maxim-ic.com/en/ds/MAX1619.pdf
- *
- * 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>
-
-
-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_1(max1619);
-
-/*
- * The MAX1619 registers
- */
-
-#define MAX1619_REG_R_MAN_ID 0xFE
-#define MAX1619_REG_R_CHIP_ID 0xFF
-#define MAX1619_REG_R_CONFIG 0x03
-#define MAX1619_REG_W_CONFIG 0x09
-#define MAX1619_REG_R_CONVRATE 0x04
-#define MAX1619_REG_W_CONVRATE 0x0A
-#define MAX1619_REG_R_STATUS 0x02
-#define MAX1619_REG_R_LOCAL_TEMP 0x00
-#define MAX1619_REG_R_REMOTE_TEMP 0x01
-#define MAX1619_REG_R_REMOTE_HIGH 0x07
-#define MAX1619_REG_W_REMOTE_HIGH 0x0D
-#define MAX1619_REG_R_REMOTE_LOW 0x08
-#define MAX1619_REG_W_REMOTE_LOW 0x0E
-#define MAX1619_REG_R_REMOTE_CRIT 0x10
-#define MAX1619_REG_W_REMOTE_CRIT 0x12
-#define MAX1619_REG_R_TCRIT_HYST 0x11
-#define MAX1619_REG_W_TCRIT_HYST 0x13
-
-/*
- * Conversions and various macros
- */
-
-#define TEMP_FROM_REG(val) ((val & 0x80 ? val-0x100 : val) * 1000)
-#define TEMP_TO_REG(val) ((val < 0 ? val+0x100*1000 : val) / 1000)
-
-/*
- * Functions declaration
- */
-
-static int max1619_attach_adapter(struct i2c_adapter *adapter);
-static int max1619_detect(struct i2c_adapter *adapter, int address,
- int kind);
-static void max1619_init_client(struct i2c_client *client);
-static int max1619_detach_client(struct i2c_client *client);
-static struct max1619_data *max1619_update_device(struct device *dev);
-
-/*
- * Driver data (common to all clients)
- */
-
-static struct i2c_driver max1619_driver = {
- .owner = THIS_MODULE,
- .name = "max1619",
- .flags = I2C_DF_NOTIFY,
- .attach_adapter = max1619_attach_adapter,
- .detach_client = max1619_detach_client,
-};
-
-/*
- * Client data (each client gets its own)
- */
-
-struct max1619_data {
- struct i2c_client client;
- struct semaphore update_lock;
- char valid; /* zero until following fields are valid */
- unsigned long last_updated; /* in jiffies */
-
- /* registers values */
- u8 temp_input1; /* local */
- u8 temp_input2, temp_low2, temp_high2; /* remote */
- u8 temp_crit2;
- u8 temp_hyst2;
- u8 alarms;
-};
-
-/*
- * Sysfs stuff
- */
-
-#define show_temp(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct max1619_data *data = max1619_update_device(dev); \
- return sprintf(buf, "%d\n", TEMP_FROM_REG(data->value)); \
-}
-show_temp(temp_input1);
-show_temp(temp_input2);
-show_temp(temp_low2);
-show_temp(temp_high2);
-show_temp(temp_crit2);
-show_temp(temp_hyst2);
-
-#define set_temp2(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 max1619_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- data->value = TEMP_TO_REG(val); \
- i2c_smbus_write_byte_data(client, reg, data->value); \
- up(&data->update_lock); \
- return count; \
-}
-
-set_temp2(temp_low2, MAX1619_REG_W_REMOTE_LOW);
-set_temp2(temp_high2, MAX1619_REG_W_REMOTE_HIGH);
-set_temp2(temp_crit2, MAX1619_REG_W_REMOTE_CRIT);
-set_temp2(temp_hyst2, MAX1619_REG_W_TCRIT_HYST);
-
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct max1619_data *data = max1619_update_device(dev);
- return sprintf(buf, "%d\n", data->alarms);
-}
-
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
-static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input2, NULL);
-static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_low2,
- set_temp_low2);
-static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_high2,
- set_temp_high2);
-static DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit2,
- set_temp_crit2);
-static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp_hyst2,
- set_temp_hyst2);
-static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
-
-/*
- * Real code
- */
-
-static int max1619_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_detect(adapter, &addr_data, max1619_detect);
-}
-
-/*
- * The following function does more than just detection. If detection
- * succeeds, it also registers the new chip.
- */
-static int max1619_detect(struct i2c_adapter *adapter, int address, int kind)
-{
- struct i2c_client *new_client;
- struct max1619_data *data;
- int err = 0;
- const char *name = "";
- u8 reg_config=0, reg_convrate=0, reg_status=0;
- u8 man_id, chip_id;
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto exit;
-
- if (!(data = kmalloc(sizeof(struct max1619_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
- memset(data, 0, sizeof(struct max1619_data));
-
- /* The common I2C client data is placed right before the
- MAX1619-specific data. */
- new_client = &data->client;
- i2c_set_clientdata(new_client, data);
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &max1619_driver;
- new_client->flags = 0;
-
- /*
- * Now we do the remaining detection. A negative kind means that
- * the driver was loaded with no force parameter (default), so we
- * must both detect and identify the chip. A zero kind means that
- * the driver was loaded with the force parameter, the detection
- * step shall be skipped. A positive kind means that the driver
- * was loaded with the force parameter and a given kind of chip is
- * requested, so both the detection and the identification steps
- * are skipped.
- */
- if (kind < 0) { /* detection */
- reg_config = i2c_smbus_read_byte_data(new_client,
- MAX1619_REG_R_CONFIG);
- reg_convrate = i2c_smbus_read_byte_data(new_client,
- MAX1619_REG_R_CONVRATE);
- reg_status = i2c_smbus_read_byte_data(new_client,
- MAX1619_REG_R_STATUS);
- if ((reg_config & 0x03) != 0x00
- || reg_convrate > 0x07 || (reg_status & 0x61 ) !=0x00) {
- dev_dbg(&adapter->dev,
- "MAX1619 detection failed at 0x%02x.\n",
- address);
- goto exit_free;
- }
- }
-
- if (kind <= 0) { /* identification */
-
- man_id = i2c_smbus_read_byte_data(new_client,
- MAX1619_REG_R_MAN_ID);
- chip_id = i2c_smbus_read_byte_data(new_client,
- MAX1619_REG_R_CHIP_ID);
-
- if ((man_id == 0x4D) && (chip_id == 0x04)){
- kind = max1619;
- }
- }
-
- if (kind <= 0) { /* identification failed */
- dev_info(&adapter->dev,
- "Unsupported chip (man_id=0x%02X, "
- "chip_id=0x%02X).\n", man_id, chip_id);
- goto exit_free;
- }
-
-
- if (kind == max1619){
- name = "max1619";
- }
-
- /* We can fill in the remaining client fields */
- strlcpy(new_client->name, name, 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(new_client)))
- goto exit_free;
-
- /* Initialize the MAX1619 chip */
- max1619_init_client(new_client);
-
- /* Register sysfs hooks */
- device_create_file(&new_client->dev, &dev_attr_temp1_input);
- device_create_file(&new_client->dev, &dev_attr_temp2_input);
- device_create_file(&new_client->dev, &dev_attr_temp2_min);
- device_create_file(&new_client->dev, &dev_attr_temp2_max);
- device_create_file(&new_client->dev, &dev_attr_temp2_crit);
- device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst);
- device_create_file(&new_client->dev, &dev_attr_alarms);
-
- return 0;
-
-exit_free:
- kfree(data);
-exit:
- return err;
-}
-
-static void max1619_init_client(struct i2c_client *client)
-{
- u8 config;
-
- /*
- * Start the conversions.
- */
- i2c_smbus_write_byte_data(client, MAX1619_REG_W_CONVRATE,
- 5); /* 2 Hz */
- config = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CONFIG);
- if (config & 0x40)
- i2c_smbus_write_byte_data(client, MAX1619_REG_W_CONFIG,
- config & 0xBF); /* run */
-}
-
-static int max1619_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;
-}
-
-static struct max1619_data *max1619_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct max1619_data *data = i2c_get_clientdata(client);
-
- down(&data->update_lock);
-
- if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
- dev_dbg(&client->dev, "Updating max1619 data.\n");
- data->temp_input1 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_LOCAL_TEMP);
- data->temp_input2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_TEMP);
- data->temp_high2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_HIGH);
- data->temp_low2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_LOW);
- data->temp_crit2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_REMOTE_CRIT);
- data->temp_hyst2 = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_TCRIT_HYST);
- data->alarms = i2c_smbus_read_byte_data(client,
- MAX1619_REG_R_STATUS);
-
- data->last_updated = jiffies;
- data->valid = 1;
- }
-
- up(&data->update_lock);
-
- return data;
-}
-
-static int __init sensors_max1619_init(void)
-{
- return i2c_add_driver(&max1619_driver);
-}
-
-static void __exit sensors_max1619_exit(void)
-{
- i2c_del_driver(&max1619_driver);
-}
-
-MODULE_AUTHOR("Alexey Fisher <fishor@mail.ru> and"
- "Jean Delvare <khali@linux-fr.org>");
-MODULE_DESCRIPTION("MAX1619 sensor driver");
-MODULE_LICENSE("GPL");
-
-module_init(sensors_max1619_init);
-module_exit(sensors_max1619_exit);