diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/hwmon/adm1025.c')
-rw-r--r-- | ANDROID_3.4.5/drivers/hwmon/adm1025.c | 625 |
1 files changed, 0 insertions, 625 deletions
diff --git a/ANDROID_3.4.5/drivers/hwmon/adm1025.c b/ANDROID_3.4.5/drivers/hwmon/adm1025.c deleted file mode 100644 index b8557f98..00000000 --- a/ANDROID_3.4.5/drivers/hwmon/adm1025.c +++ /dev/null @@ -1,625 +0,0 @@ -/* - * adm1025.c - * - * Copyright (C) 2000 Chen-Yuan Wu <gwu@esoft.com> - * Copyright (C) 2003-2009 Jean Delvare <khali@linux-fr.org> - * - * The ADM1025 is a sensor chip made by Analog Devices. It reports up to 6 - * voltages (including its own power source) and up to two temperatures - * (its own plus up to one external one). Voltages are scaled internally - * (which is not the common way) with ratios such that the nominal value - * of each voltage correspond to a register value of 192 (which means a - * resolution of about 0.5% of the nominal value). Temperature values are - * reported with a 1 deg resolution and a 3 deg accuracy. Complete - * datasheet can be obtained from Analog's website at: - * http://www.onsemi.com/PowerSolutions/product.do?id=ADM1025 - * - * This driver also supports the ADM1025A, which differs from the ADM1025 - * only in that it has "open-drain VID inputs while the ADM1025 has - * on-chip 100k pull-ups on the VID inputs". It doesn't make any - * difference for us. - * - * This driver also supports the NE1619, a sensor chip made by Philips. - * That chip is similar to the ADM1025A, with a few differences. The only - * difference that matters to us is that the NE1619 has only two possible - * addresses while the ADM1025A has a third one. Complete datasheet can be - * obtained from Philips's website at: - * http://www.semiconductors.philips.com/pip/NE1619DS.html - * - * Since the ADM1025 was the first chipset supported by this driver, most - * comments will refer to this chipset, but are actually general and - * concern all supported chipsets, unless mentioned otherwise. - * - * 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/hwmon.h> -#include <linux/hwmon-sysfs.h> -#include <linux/hwmon-vid.h> -#include <linux/err.h> -#include <linux/mutex.h> - -/* - * Addresses to scan - * ADM1025 and ADM1025A have three possible addresses: 0x2c, 0x2d and 0x2e. - * NE1619 has two possible addresses: 0x2c and 0x2d. - */ - -static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; - -enum chips { adm1025, ne1619 }; - -/* - * The ADM1025 registers - */ - -#define ADM1025_REG_MAN_ID 0x3E -#define ADM1025_REG_CHIP_ID 0x3F -#define ADM1025_REG_CONFIG 0x40 -#define ADM1025_REG_STATUS1 0x41 -#define ADM1025_REG_STATUS2 0x42 -#define ADM1025_REG_IN(nr) (0x20 + (nr)) -#define ADM1025_REG_IN_MAX(nr) (0x2B + (nr) * 2) -#define ADM1025_REG_IN_MIN(nr) (0x2C + (nr) * 2) -#define ADM1025_REG_TEMP(nr) (0x26 + (nr)) -#define ADM1025_REG_TEMP_HIGH(nr) (0x37 + (nr) * 2) -#define ADM1025_REG_TEMP_LOW(nr) (0x38 + (nr) * 2) -#define ADM1025_REG_VID 0x47 -#define ADM1025_REG_VID4 0x49 - -/* - * Conversions and various macros - * The ADM1025 uses signed 8-bit values for temperatures. - */ - -static const int in_scale[6] = { 2500, 2250, 3300, 5000, 12000, 3300 }; - -#define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192) -#define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \ - (val) * 192 >= (scale) * 255 ? 255 : \ - ((val) * 192 + (scale) / 2) / (scale)) - -#define TEMP_FROM_REG(reg) ((reg) * 1000) -#define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ - (val) >= 126500 ? 127 : \ - (((val) < 0 ? (val) - 500 : \ - (val) + 500) / 1000)) - -/* - * Functions declaration - */ - -static int adm1025_probe(struct i2c_client *client, - const struct i2c_device_id *id); -static int adm1025_detect(struct i2c_client *client, - struct i2c_board_info *info); -static void adm1025_init_client(struct i2c_client *client); -static int adm1025_remove(struct i2c_client *client); -static struct adm1025_data *adm1025_update_device(struct device *dev); - -/* - * Driver data (common to all clients) - */ - -static const struct i2c_device_id adm1025_id[] = { - { "adm1025", adm1025 }, - { "ne1619", ne1619 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, adm1025_id); - -static struct i2c_driver adm1025_driver = { - .class = I2C_CLASS_HWMON, - .driver = { - .name = "adm1025", - }, - .probe = adm1025_probe, - .remove = adm1025_remove, - .id_table = adm1025_id, - .detect = adm1025_detect, - .address_list = normal_i2c, -}; - -/* - * Client data (each client gets its own) - */ - -struct adm1025_data { - struct device *hwmon_dev; - struct mutex update_lock; - char valid; /* zero until following fields are valid */ - unsigned long last_updated; /* in jiffies */ - - u8 in[6]; /* register value */ - u8 in_max[6]; /* register value */ - u8 in_min[6]; /* register value */ - s8 temp[2]; /* register value */ - s8 temp_min[2]; /* register value */ - s8 temp_max[2]; /* register value */ - u16 alarms; /* register values, combined */ - u8 vid; /* register values, combined */ - u8 vrm; -}; - -/* - * Sysfs stuff - */ - -static ssize_t -show_in(struct device *dev, struct device_attribute *attr, char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%u\n", IN_FROM_REG(data->in[index], - in_scale[index])); -} - -static ssize_t -show_in_min(struct device *dev, struct device_attribute *attr, char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[index], - in_scale[index])); -} - -static ssize_t -show_in_max(struct device *dev, struct device_attribute *attr, char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[index], - in_scale[index])); -} - -static ssize_t -show_temp(struct device *dev, struct device_attribute *attr, char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[index])); -} - -static ssize_t -show_temp_min(struct device *dev, struct device_attribute *attr, char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[index])); -} - -static ssize_t -show_temp_max(struct device *dev, struct device_attribute *attr, char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[index])); -} - -static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int index = to_sensor_dev_attr(attr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct adm1025_data *data = i2c_get_clientdata(client); - long val; - int err; - - err = kstrtol(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->in_min[index] = IN_TO_REG(val, in_scale[index]); - i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MIN(index), - data->in_min[index]); - mutex_unlock(&data->update_lock); - return count; -} - -static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int index = to_sensor_dev_attr(attr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct adm1025_data *data = i2c_get_clientdata(client); - long val; - int err; - - err = kstrtol(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->in_max[index] = IN_TO_REG(val, in_scale[index]); - i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(index), - data->in_max[index]); - mutex_unlock(&data->update_lock); - return count; -} - -#define set_in(offset) \ -static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ - show_in, NULL, offset); \ -static SENSOR_DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \ - show_in_min, set_in_min, offset); \ -static SENSOR_DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \ - show_in_max, set_in_max, offset) -set_in(0); -set_in(1); -set_in(2); -set_in(3); -set_in(4); -set_in(5); - -static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int index = to_sensor_dev_attr(attr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct adm1025_data *data = i2c_get_clientdata(client); - long val; - int err; - - err = kstrtol(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->temp_min[index] = TEMP_TO_REG(val); - i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_LOW(index), - data->temp_min[index]); - mutex_unlock(&data->update_lock); - return count; -} - -static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int index = to_sensor_dev_attr(attr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct adm1025_data *data = i2c_get_clientdata(client); - long val; - int err; - - err = kstrtol(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->temp_max[index] = TEMP_TO_REG(val); - i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_HIGH(index), - data->temp_max[index]); - mutex_unlock(&data->update_lock); - return count; -} - -#define set_temp(offset) \ -static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ - show_temp, NULL, offset - 1); \ -static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \ - show_temp_min, set_temp_min, offset - 1); \ -static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \ - show_temp_max, set_temp_max, offset - 1) -set_temp(1); -set_temp(2); - -static ssize_t -show_alarms(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%u\n", data->alarms); -} -static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); - -static ssize_t -show_alarm(struct device *dev, struct device_attribute *attr, char *buf) -{ - int bitnr = to_sensor_dev_attr(attr)->index; - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); -} -static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); -static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); -static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); -static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); -static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); -static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); -static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 5); -static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 4); -static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); - -static ssize_t -show_vid(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct adm1025_data *data = adm1025_update_device(dev); - return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); -} -static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); - -static ssize_t -show_vrm(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct adm1025_data *data = dev_get_drvdata(dev); - return sprintf(buf, "%u\n", data->vrm); -} -static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct adm1025_data *data = dev_get_drvdata(dev); - unsigned long val; - int err; - - err = kstrtoul(buf, 10, &val); - if (err) - return err; - - data->vrm = val; - return count; -} -static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); - -/* - * Real code - */ - -static struct attribute *adm1025_attributes[] = { - &sensor_dev_attr_in0_input.dev_attr.attr, - &sensor_dev_attr_in1_input.dev_attr.attr, - &sensor_dev_attr_in2_input.dev_attr.attr, - &sensor_dev_attr_in3_input.dev_attr.attr, - &sensor_dev_attr_in5_input.dev_attr.attr, - &sensor_dev_attr_in0_min.dev_attr.attr, - &sensor_dev_attr_in1_min.dev_attr.attr, - &sensor_dev_attr_in2_min.dev_attr.attr, - &sensor_dev_attr_in3_min.dev_attr.attr, - &sensor_dev_attr_in5_min.dev_attr.attr, - &sensor_dev_attr_in0_max.dev_attr.attr, - &sensor_dev_attr_in1_max.dev_attr.attr, - &sensor_dev_attr_in2_max.dev_attr.attr, - &sensor_dev_attr_in3_max.dev_attr.attr, - &sensor_dev_attr_in5_max.dev_attr.attr, - &sensor_dev_attr_in0_alarm.dev_attr.attr, - &sensor_dev_attr_in1_alarm.dev_attr.attr, - &sensor_dev_attr_in2_alarm.dev_attr.attr, - &sensor_dev_attr_in3_alarm.dev_attr.attr, - &sensor_dev_attr_in5_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp1_min.dev_attr.attr, - &sensor_dev_attr_temp2_min.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp1_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_fault.dev_attr.attr, - &dev_attr_alarms.attr, - &dev_attr_cpu0_vid.attr, - &dev_attr_vrm.attr, - NULL -}; - -static const struct attribute_group adm1025_group = { - .attrs = adm1025_attributes, -}; - -static struct attribute *adm1025_attributes_in4[] = { - &sensor_dev_attr_in4_input.dev_attr.attr, - &sensor_dev_attr_in4_min.dev_attr.attr, - &sensor_dev_attr_in4_max.dev_attr.attr, - &sensor_dev_attr_in4_alarm.dev_attr.attr, - NULL -}; - -static const struct attribute_group adm1025_group_in4 = { - .attrs = adm1025_attributes_in4, -}; - -/* Return 0 if detection is successful, -ENODEV otherwise */ -static int adm1025_detect(struct i2c_client *client, - struct i2c_board_info *info) -{ - struct i2c_adapter *adapter = client->adapter; - const char *name; - u8 man_id, chip_id; - - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return -ENODEV; - - /* Check for unused bits */ - if ((i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG) & 0x80) - || (i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS1) & 0xC0) - || (i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS2) & 0xBC)) { - dev_dbg(&adapter->dev, "ADM1025 detection failed at 0x%02x\n", - client->addr); - return -ENODEV; - } - - /* Identification */ - chip_id = i2c_smbus_read_byte_data(client, ADM1025_REG_CHIP_ID); - if ((chip_id & 0xF0) != 0x20) - return -ENODEV; - - man_id = i2c_smbus_read_byte_data(client, ADM1025_REG_MAN_ID); - if (man_id == 0x41) - name = "adm1025"; - else if (man_id == 0xA1 && client->addr != 0x2E) - name = "ne1619"; - else - return -ENODEV; - - strlcpy(info->type, name, I2C_NAME_SIZE); - - return 0; -} - -static int adm1025_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct adm1025_data *data; - int err; - u8 config; - - data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL); - if (!data) { - err = -ENOMEM; - goto exit; - } - - i2c_set_clientdata(client, data); - mutex_init(&data->update_lock); - - /* Initialize the ADM1025 chip */ - adm1025_init_client(client); - - /* Register sysfs hooks */ - err = sysfs_create_group(&client->dev.kobj, &adm1025_group); - if (err) - goto exit_free; - - /* Pin 11 is either in4 (+12V) or VID4 */ - config = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG); - if (!(config & 0x20)) { - err = sysfs_create_group(&client->dev.kobj, &adm1025_group_in4); - if (err) - goto exit_remove; - } - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - goto exit_remove; - } - - return 0; - -exit_remove: - sysfs_remove_group(&client->dev.kobj, &adm1025_group); - sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4); -exit_free: - kfree(data); -exit: - return err; -} - -static void adm1025_init_client(struct i2c_client *client) -{ - u8 reg; - struct adm1025_data *data = i2c_get_clientdata(client); - int i; - - data->vrm = vid_which_vrm(); - - /* - * Set high limits - * Usually we avoid setting limits on driver init, but it happens - * that the ADM1025 comes with stupid default limits (all registers - * set to 0). In case the chip has not gone through any limit - * setting yet, we better set the high limits to the max so that - * no alarm triggers. - */ - for (i = 0; i < 6; i++) { - reg = i2c_smbus_read_byte_data(client, - ADM1025_REG_IN_MAX(i)); - if (reg == 0) - i2c_smbus_write_byte_data(client, - ADM1025_REG_IN_MAX(i), - 0xFF); - } - for (i = 0; i < 2; i++) { - reg = i2c_smbus_read_byte_data(client, - ADM1025_REG_TEMP_HIGH(i)); - if (reg == 0) - i2c_smbus_write_byte_data(client, - ADM1025_REG_TEMP_HIGH(i), - 0x7F); - } - - /* - * Start the conversions - */ - reg = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG); - if (!(reg & 0x01)) - i2c_smbus_write_byte_data(client, ADM1025_REG_CONFIG, - (reg&0x7E)|0x01); -} - -static int adm1025_remove(struct i2c_client *client) -{ - struct adm1025_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, &adm1025_group); - sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4); - - kfree(data); - return 0; -} - -static struct adm1025_data *adm1025_update_device(struct device *dev) -{ - struct i2c_client *client = to_i2c_client(dev); - struct adm1025_data *data = i2c_get_clientdata(client); - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) { - int i; - - dev_dbg(&client->dev, "Updating data.\n"); - for (i = 0; i < 6; i++) { - data->in[i] = i2c_smbus_read_byte_data(client, - ADM1025_REG_IN(i)); - data->in_min[i] = i2c_smbus_read_byte_data(client, - ADM1025_REG_IN_MIN(i)); - data->in_max[i] = i2c_smbus_read_byte_data(client, - ADM1025_REG_IN_MAX(i)); - } - for (i = 0; i < 2; i++) { - data->temp[i] = i2c_smbus_read_byte_data(client, - ADM1025_REG_TEMP(i)); - data->temp_min[i] = i2c_smbus_read_byte_data(client, - ADM1025_REG_TEMP_LOW(i)); - data->temp_max[i] = i2c_smbus_read_byte_data(client, - ADM1025_REG_TEMP_HIGH(i)); - } - data->alarms = i2c_smbus_read_byte_data(client, - ADM1025_REG_STATUS1) - | (i2c_smbus_read_byte_data(client, - ADM1025_REG_STATUS2) << 8); - data->vid = (i2c_smbus_read_byte_data(client, - ADM1025_REG_VID) & 0x0f) - | ((i2c_smbus_read_byte_data(client, - ADM1025_REG_VID4) & 0x01) << 4); - - data->last_updated = jiffies; - data->valid = 1; - } - - mutex_unlock(&data->update_lock); - - return data; -} - -module_i2c_driver(adm1025_driver); - -MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); -MODULE_DESCRIPTION("ADM1025 driver"); -MODULE_LICENSE("GPL"); |