w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
- Copyright (C) 2006 Charles Spirakis <bezaur@gmail.com>
+ Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.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
#define NUMBER_OF_TEMPIN 3
/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
+ I2C_CLIENT_END };
/* Insmod parameters */
I2C_CLIENT_INSMOD_1(w83791d);
}
struct w83791d_data {
- struct i2c_client client;
- struct class_device *class_dev;
+ struct device *hwmon_dev;
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
u8 vrm; /* hwmon-vid */
};
-static int w83791d_attach_adapter(struct i2c_adapter *adapter);
-static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind);
-static int w83791d_detach_client(struct i2c_client *client);
+static int w83791d_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int w83791d_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
+static int w83791d_remove(struct i2c_client *client);
static int w83791d_read(struct i2c_client *client, u8 register);
static int w83791d_write(struct i2c_client *client, u8 register, u8 value);
static void w83791d_init_client(struct i2c_client *client);
+static const struct i2c_device_id w83791d_id[] = {
+ { "w83791d", w83791d },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, w83791d_id);
+
static struct i2c_driver w83791d_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
.name = "w83791d",
},
- .attach_adapter = w83791d_attach_adapter,
- .detach_client = w83791d_detach_client,
+ .probe = w83791d_probe,
+ .remove = w83791d_remove,
+ .id_table = w83791d_id,
+ .detect = w83791d_detect,
+ .address_data = &addr_data,
};
/* following are the sysfs callback functions */
SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
};
+
+static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr =
+ to_sensor_dev_attr(attr);
+ struct w83791d_data *data = w83791d_update_device(dev);
+ int bitnr = sensor_attr->index;
+
+ return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
+}
+
+static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr =
+ to_sensor_dev_attr(attr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83791d_data *data = i2c_get_clientdata(client);
+ int bitnr = sensor_attr->index;
+ int bytenr = bitnr / 8;
+ long val = simple_strtol(buf, NULL, 10) ? 1 : 0;
+
+ mutex_lock(&data->update_lock);
+
+ data->beep_mask &= ~(0xff << (bytenr * 8));
+ data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
+ << (bytenr * 8);
+
+ data->beep_mask &= ~(1 << bitnr);
+ data->beep_mask |= val << bitnr;
+
+ w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
+ (data->beep_mask >> (bytenr * 8)) & 0xff);
+
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr =
+ to_sensor_dev_attr(attr);
+ struct w83791d_data *data = w83791d_update_device(dev);
+ int bitnr = sensor_attr->index;
+
+ return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
+}
+
+/* Note: The bitmask for the beep enable/disable is different than
+ the bitmask for the alarm. */
+static struct sensor_device_attribute sda_in_beep[] = {
+ SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
+ SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
+ SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
+ SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
+ SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
+ SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
+ SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
+ SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
+ SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
+ SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
+};
+
+static struct sensor_device_attribute sda_in_alarm[] = {
+ SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
+ SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
+ SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
+ SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
+ SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
+ SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
+ SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
+ SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
+ SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
+ SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
+};
+
#define show_fan_reg(reg) \
static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
char *buf) \
show_fan_div, store_fan_div, 4),
};
+static struct sensor_device_attribute sda_fan_beep[] = {
+ SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
+ SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
+ SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
+ SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
+ SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
+};
+
+static struct sensor_device_attribute sda_fan_alarm[] = {
+ SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
+ SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
+ SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
+ SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
+ SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
+};
+
/* read/write the temperature1, includes measured value and limits */
static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
char *buf)
show_temp23, store_temp23, 1, 2),
};
+/* Note: The bitmask for the beep enable/disable is different than
+ the bitmask for the alarm. */
+static struct sensor_device_attribute sda_temp_beep[] = {
+ SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
+ SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
+ SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
+};
+
+static struct sensor_device_attribute sda_temp_alarm[] = {
+ SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
+ SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
+ SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
+};
/* get reatime status of all sensors items: voltage, temp, fan */
static ssize_t show_alarms_reg(struct device *dev,
static ssize_t show_vrm_reg(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct w83791d_data *data = w83791d_update_device(dev);
+ struct w83791d_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", data->vrm);
}
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct w83791d_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
+ struct w83791d_data *data = dev_get_drvdata(dev);
/* No lock needed as vrm is internal to the driver
(not read from a chip register) and so is not
updated in w83791d_update_device() */
- data->vrm = val;
+ data->vrm = simple_strtoul(buf, NULL, 10);
return count;
}
#define IN_UNIT_ATTRS(X) \
&sda_in_input[X].dev_attr.attr, \
&sda_in_min[X].dev_attr.attr, \
- &sda_in_max[X].dev_attr.attr
+ &sda_in_max[X].dev_attr.attr, \
+ &sda_in_beep[X].dev_attr.attr, \
+ &sda_in_alarm[X].dev_attr.attr
#define FAN_UNIT_ATTRS(X) \
&sda_fan_input[X].dev_attr.attr, \
&sda_fan_min[X].dev_attr.attr, \
- &sda_fan_div[X].dev_attr.attr
+ &sda_fan_div[X].dev_attr.attr, \
+ &sda_fan_beep[X].dev_attr.attr, \
+ &sda_fan_alarm[X].dev_attr.attr
#define TEMP_UNIT_ATTRS(X) \
&sda_temp_input[X].dev_attr.attr, \
&sda_temp_max[X].dev_attr.attr, \
- &sda_temp_max_hyst[X].dev_attr.attr
+ &sda_temp_max_hyst[X].dev_attr.attr, \
+ &sda_temp_beep[X].dev_attr.attr, \
+ &sda_temp_alarm[X].dev_attr.attr
static struct attribute *w83791d_attributes[] = {
IN_UNIT_ATTRS(0),
.attrs = w83791d_attributes,
};
-/* This function is called when:
- * w83791d_driver is inserted (when this module is loaded), for each
- available adapter
- * when a new adapter is inserted (and w83791d_driver is still present) */
-static int w83791d_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, w83791d_detect);
-}
-
-static int w83791d_create_subclient(struct i2c_adapter *adapter,
- struct i2c_client *client, int addr,
- struct i2c_client **sub_cli)
-{
- int err;
- struct i2c_client *sub_client;
-
- (*sub_cli) = sub_client =
- kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (!(sub_client)) {
- return -ENOMEM;
- }
- sub_client->addr = 0x48 + addr;
- i2c_set_clientdata(sub_client, NULL);
- sub_client->adapter = adapter;
- sub_client->driver = &w83791d_driver;
- strlcpy(sub_client->name, "w83791d subclient", I2C_NAME_SIZE);
- if ((err = i2c_attach_client(sub_client))) {
- dev_err(&client->dev, "subclient registration "
- "at address 0x%x failed\n", sub_client->addr);
- kfree(sub_client);
- return err;
- }
- return 0;
-}
-
-
-static int w83791d_detect_subclients(struct i2c_adapter *adapter, int address,
- int kind, struct i2c_client *client)
+static int w83791d_detect_subclients(struct i2c_client *client)
{
+ struct i2c_adapter *adapter = client->adapter;
struct w83791d_data *data = i2c_get_clientdata(client);
+ int address = client->addr;
int i, id, err;
u8 val;
val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
if (!(val & 0x08)) {
- err = w83791d_create_subclient(adapter, client,
- val & 0x7, &data->lm75[0]);
- if (err < 0)
- goto error_sc_0;
+ data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
}
if (!(val & 0x80)) {
if ((data->lm75[0] != NULL) &&
err = -ENODEV;
goto error_sc_1;
}
- err = w83791d_create_subclient(adapter, client,
- (val >> 4) & 0x7, &data->lm75[1]);
- if (err < 0)
- goto error_sc_1;
+ data->lm75[1] = i2c_new_dummy(adapter,
+ 0x48 + ((val >> 4) & 0x7));
}
return 0;
/* Undo inits in case of errors */
error_sc_1:
- if (data->lm75[0] != NULL) {
- i2c_detach_client(data->lm75[0]);
- kfree(data->lm75[0]);
- }
+ if (data->lm75[0] != NULL)
+ i2c_unregister_device(data->lm75[0]);
error_sc_0:
return err;
}
-static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int w83791d_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info)
{
- struct i2c_client *client;
- struct device *dev;
- struct w83791d_data *data;
- int i, val1, val2;
- int err = 0;
- const char *client_name = "";
+ struct i2c_adapter *adapter = client->adapter;
+ int val1, val2;
+ unsigned short address = client->addr;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
- goto error0;
+ return -ENODEV;
}
- /* 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 w83791d_{read,write}_value. */
- if (!(data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto error0;
- }
-
- client = &data->client;
- dev = &client->dev;
- i2c_set_clientdata(client, data);
- client->addr = address;
- client->adapter = adapter;
- client->driver = &w83791d_driver;
- mutex_init(&data->update_lock);
-
- /* Now, we do the remaining detection. */
-
/* The w83791d may be stuck in some other bank than bank 0. This may
make reading other information impossible. Specify a force=...
parameter, and the Winbond will be reset to the right bank. */
if (kind < 0) {
if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80) {
- dev_dbg(dev, "Detection failed at step 1\n");
- goto error1;
+ return -ENODEV;
}
val1 = w83791d_read(client, W83791D_REG_BANK);
val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
/* yes it is Bank0 */
if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
((val1 & 0x80) && (val2 != 0x5c))) {
- dev_dbg(dev, "Detection failed at step 2\n");
- goto error1;
+ return -ENODEV;
}
}
/* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
should match */
if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address) {
- dev_dbg(dev, "Detection failed at step 3\n");
- goto error1;
+ return -ENODEV;
}
}
/* get vendor ID */
val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
if (val2 != 0x5c) { /* the vendor is NOT Winbond */
- dev_dbg(dev, "Detection failed at step 4\n");
- goto error1;
+ return -ENODEV;
}
val1 = w83791d_read(client, W83791D_REG_WCHIPID);
if (val1 == 0x71) {
kind = w83791d;
} else {
if (kind == 0)
- dev_warn(dev,
+ dev_warn(&adapter->dev,
"w83791d: Ignoring 'force' parameter "
"for unknown chip at adapter %d, "
"address 0x%02x\n",
i2c_adapter_id(adapter), address);
- goto error1;
+ return -ENODEV;
}
}
- if (kind == w83791d) {
- client_name = "w83791d";
- } else {
- dev_err(dev, "w83791d: Internal error: unknown kind (%d)?!?",
- kind);
- goto error1;
- }
+ strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static int w83791d_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct w83791d_data *data;
+ struct device *dev = &client->dev;
+ int i, val1, err;
#ifdef DEBUG
val1 = w83791d_read(client, W83791D_REG_DID_VID4);
(val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
#endif
- /* Fill in the remaining client fields and put into the global list */
- strlcpy(client->name, client_name, I2C_NAME_SIZE);
+ data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto error0;
+ }
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(client)))
- goto error1;
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
- if ((err = w83791d_detect_subclients(adapter, address, kind, client)))
- goto error2;
+ err = w83791d_detect_subclients(client);
+ if (err)
+ goto error1;
/* Initialize the chip */
w83791d_init_client(client);
goto error3;
/* Everything is ready, now register the working device */
- data->class_dev = hwmon_device_register(dev);
- if (IS_ERR(data->class_dev)) {
- err = PTR_ERR(data->class_dev);
+ data->hwmon_dev = hwmon_device_register(dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
goto error4;
}
error4:
sysfs_remove_group(&client->dev.kobj, &w83791d_group);
error3:
- if (data->lm75[0] != NULL) {
- i2c_detach_client(data->lm75[0]);
- kfree(data->lm75[0]);
- }
- if (data->lm75[1] != NULL) {
- i2c_detach_client(data->lm75[1]);
- kfree(data->lm75[1]);
- }
-error2:
- i2c_detach_client(client);
+ if (data->lm75[0] != NULL)
+ i2c_unregister_device(data->lm75[0]);
+ if (data->lm75[1] != NULL)
+ i2c_unregister_device(data->lm75[1]);
error1:
kfree(data);
error0:
return err;
}
-static int w83791d_detach_client(struct i2c_client *client)
+static int w83791d_remove(struct i2c_client *client)
{
struct w83791d_data *data = i2c_get_clientdata(client);
- int err;
-
- /* main client */
- if (data) {
- hwmon_device_unregister(data->class_dev);
- sysfs_remove_group(&client->dev.kobj, &w83791d_group);
- }
- if ((err = i2c_detach_client(client)))
- return err;
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &w83791d_group);
- /* main client */
- if (data)
- kfree(data);
- /* subclient */
- else
- kfree(client);
+ if (data->lm75[0] != NULL)
+ i2c_unregister_device(data->lm75[0]);
+ if (data->lm75[1] != NULL)
+ i2c_unregister_device(data->lm75[1]);
+ kfree(data);
return 0;
}
git.openpandora.org / pandora-kernel.git / blobdiff