/* fschmd.c
*
- * Copyright (C) 2007 Hans de Goede <j.w.r.degoede@hhs.nl>
+ * Copyright (C) 2007,2008 Hans de Goede <hdegoede@redhat.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 FSCHMD_REG_EVENT_STATE 0x04
#define FSCHMD_REG_CONTROL 0x05
-#define FSCHMD_CONTROL_ALERT_LED_MASK 0x01
+#define FSCHMD_CONTROL_ALERT_LED 0x01
/* watchdog (support to be implemented) */
#define FSCHMD_REG_WDOG_PRESET 0x28
static const int FSCHMD_NO_FAN_SENSORS[5] = { 3, 3, 6, 4, 5 };
/* Fan status register bitmasks */
-#define FSCHMD_FAN_ALARM_MASK 0x04 /* called fault by FSC! */
-#define FSCHMD_FAN_NOT_PRESENT_MASK 0x08 /* not documented */
+#define FSCHMD_FAN_ALARM 0x04 /* called fault by FSC! */
+#define FSCHMD_FAN_NOT_PRESENT 0x08 /* not documented */
/* actual temperature registers */
static const int FSCHMD_NO_TEMP_SENSORS[5] = { 3, 3, 4, 3, 5 };
/* temp status register bitmasks */
-#define FSCHMD_TEMP_WORKING_MASK 0x01
-#define FSCHMD_TEMP_ALERT_MASK 0x02
+#define FSCHMD_TEMP_WORKING 0x01
+#define FSCHMD_TEMP_ALERT 0x02
/* there only really is an alarm if the sensor is working and alert == 1 */
#define FSCHMD_TEMP_ALARM_MASK \
- (FSCHMD_TEMP_WORKING_MASK | FSCHMD_TEMP_ALERT_MASK)
-
-/* our driver name */
-#define FSCHMD_NAME "fschmd"
+ (FSCHMD_TEMP_WORKING | FSCHMD_TEMP_ALERT)
/*
* Functions declarations
*/
-static int fschmd_attach_adapter(struct i2c_adapter *adapter);
-static int fschmd_detach_client(struct i2c_client *client);
+static int fschmd_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int fschmd_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
+static int fschmd_remove(struct i2c_client *client);
static struct fschmd_data *fschmd_update_device(struct device *dev);
/*
* Driver data (common to all clients)
*/
+static const struct i2c_device_id fschmd_id[] = {
+ { "fscpos", fscpos },
+ { "fscher", fscher },
+ { "fscscy", fscscy },
+ { "fschrc", fschrc },
+ { "fschmd", fschmd },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, fschmd_id);
+
static struct i2c_driver fschmd_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
- .name = FSCHMD_NAME,
+ .name = "fschmd",
},
- .attach_adapter = fschmd_attach_adapter,
- .detach_client = fschmd_detach_client,
+ .probe = fschmd_probe,
+ .remove = fschmd_remove,
+ .id_table = fschmd_id,
+ .detect = fschmd_detect,
+ .address_data = &addr_data,
};
/*
*/
struct fschmd_data {
- struct i2c_client client;
struct device *hwmon_dev;
struct mutex update_lock;
int kind;
v = SENSORS_LIMIT(v, -128, 127) + 128;
mutex_lock(&data->update_lock);
- i2c_smbus_write_byte_data(&data->client,
+ i2c_smbus_write_byte_data(to_i2c_client(dev),
FSCHMD_REG_TEMP_LIMIT[data->kind][index], v);
data->temp_max[index] = v;
mutex_unlock(&data->update_lock);
struct fschmd_data *data = fschmd_update_device(dev);
/* bit 0 set means sensor working ok, so no fault! */
- if (data->temp_status[index] & FSCHMD_TEMP_WORKING_MASK)
+ if (data->temp_status[index] & FSCHMD_TEMP_WORKING)
return sprintf(buf, "0\n");
else
return sprintf(buf, "1\n");
mutex_lock(&data->update_lock);
- reg = i2c_smbus_read_byte_data(&data->client,
+ reg = i2c_smbus_read_byte_data(to_i2c_client(dev),
FSCHMD_REG_FAN_RIPPLE[data->kind][index]);
/* bits 2..7 reserved => mask with 0x03 */
reg &= ~0x03;
reg |= v;
- i2c_smbus_write_byte_data(&data->client,
+ i2c_smbus_write_byte_data(to_i2c_client(dev),
FSCHMD_REG_FAN_RIPPLE[data->kind][index], reg);
data->fan_ripple[index] = reg;
int index = to_sensor_dev_attr(devattr)->index;
struct fschmd_data *data = fschmd_update_device(dev);
- if (data->fan_status[index] & FSCHMD_FAN_ALARM_MASK)
+ if (data->fan_status[index] & FSCHMD_FAN_ALARM)
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
int index = to_sensor_dev_attr(devattr)->index;
struct fschmd_data *data = fschmd_update_device(dev);
- if (data->fan_status[index] & FSCHMD_FAN_NOT_PRESENT_MASK)
+ if (data->fan_status[index] & FSCHMD_FAN_NOT_PRESENT)
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
mutex_lock(&data->update_lock);
- i2c_smbus_write_byte_data(&data->client,
+ i2c_smbus_write_byte_data(to_i2c_client(dev),
FSCHMD_REG_FAN_MIN[data->kind][index], v);
data->fan_min[index] = v;
{
struct fschmd_data *data = fschmd_update_device(dev);
- if (data->global_control & FSCHMD_CONTROL_ALERT_LED_MASK)
+ if (data->global_control & FSCHMD_CONTROL_ALERT_LED)
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
mutex_lock(&data->update_lock);
- reg = i2c_smbus_read_byte_data(&data->client, FSCHMD_REG_CONTROL);
+ reg = i2c_smbus_read_byte_data(to_i2c_client(dev), FSCHMD_REG_CONTROL);
if (v)
- reg |= FSCHMD_CONTROL_ALERT_LED_MASK;
+ reg |= FSCHMD_CONTROL_ALERT_LED;
else
- reg &= ~FSCHMD_CONTROL_ALERT_LED_MASK;
+ reg &= ~FSCHMD_CONTROL_ALERT_LED;
- i2c_smbus_write_byte_data(&data->client, FSCHMD_REG_CONTROL, reg);
+ i2c_smbus_write_byte_data(to_i2c_client(dev), FSCHMD_REG_CONTROL, reg);
data->global_control = reg;
}
}
-static int fschmd_detect(struct i2c_adapter *adapter, int address, int kind)
+static int fschmd_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info)
{
- struct i2c_client *client;
- struct fschmd_data *data;
- u8 revision;
- const char * const names[5] = { "Poseidon", "Hermes", "Scylla",
- "Heracles", "Heimdall" };
+ struct i2c_adapter *adapter = client->adapter;
const char * const client_names[5] = { "fscpos", "fscher", "fscscy",
"fschrc", "fschmd" };
- int i, err = 0;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return 0;
-
- /* 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 i2c_smbus_read_byte_data. */
- if (!(data = kzalloc(sizeof(struct fschmd_data), GFP_KERNEL)))
- return -ENOMEM;
-
- client = &data->client;
- i2c_set_clientdata(client, data);
- client->addr = address;
- client->adapter = adapter;
- client->driver = &fschmd_driver;
- mutex_init(&data->update_lock);
+ return -ENODEV;
/* Detect & Identify the chip */
if (kind <= 0) {
else if (!strcmp(id, "HMD"))
kind = fschmd;
else
- goto exit_free;
+ return -ENODEV;
}
+ strlcpy(info->type, client_names[kind - 1], I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static int fschmd_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct fschmd_data *data;
+ u8 revision;
+ const char * const names[5] = { "Poseidon", "Hermes", "Scylla",
+ "Heracles", "Heimdall" };
+ int i, err;
+ enum chips kind = id->driver_data;
+
+ data = kzalloc(sizeof(struct fschmd_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
+
if (kind == fscpos) {
/* The Poseidon has hardwired temp limits, fill these
in for the alarm resetting code */
}
/* Read the special DMI table for fscher and newer chips */
- if (kind == fscher || kind >= fschrc) {
+ if ((kind == fscher || kind >= fschrc) && dmi_vref == -1) {
dmi_walk(fschmd_dmi_decode);
if (dmi_vref == -1) {
- printk(KERN_WARNING FSCHMD_NAME
- ": Couldn't get voltage scaling factors from "
+ dev_warn(&client->dev,
+ "Couldn't get voltage scaling factors from "
"BIOS DMI table, using builtin defaults\n");
dmi_vref = 33;
}
/* i2c kind goes from 1-5, we want from 0-4 to address arrays */
data->kind = kind - 1;
- strlcpy(client->name, client_names[data->kind], I2C_NAME_SIZE);
-
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(client)))
- goto exit_free;
for (i = 0; i < ARRAY_SIZE(fschmd_attr); i++) {
err = device_create_file(&client->dev,
}
revision = i2c_smbus_read_byte_data(client, FSCHMD_REG_REVISION);
- printk(KERN_INFO FSCHMD_NAME ": Detected FSC %s chip, revision: %d\n",
+ dev_info(&client->dev, "Detected FSC %s chip, revision: %d\n",
names[data->kind], (int) revision);
return 0;
exit_detach:
- fschmd_detach_client(client); /* will also free data for us */
- return err;
-
-exit_free:
- kfree(data);
+ fschmd_remove(client); /* will also free data for us */
return err;
}
-static int fschmd_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, fschmd_detect);
-}
-
-static int fschmd_detach_client(struct i2c_client *client)
+static int fschmd_remove(struct i2c_client *client)
{
struct fschmd_data *data = i2c_get_clientdata(client);
- int i, err;
+ int i;
/* Check if registered in case we're called from fschmd_detect
to cleanup after an error */
device_remove_file(&client->dev,
&fschmd_fan_attr[i].dev_attr);
- if ((err = i2c_detach_client(client)))
- return err;
-
kfree(data);
return 0;
}
data->temp_act[i] < data->temp_max[i])
i2c_smbus_write_byte_data(client,
FSCHMD_REG_TEMP_STATE[data->kind][i],
- FSCHMD_TEMP_ALERT_MASK);
+ FSCHMD_TEMP_ALERT);
}
for (i = 0; i < FSCHMD_NO_FAN_SENSORS[data->kind]; i++) {
FSCHMD_REG_FAN_MIN[data->kind][i]);
/* reset fan status if speed is back to > 0 */
- if ((data->fan_status[i] & FSCHMD_FAN_ALARM_MASK) &&
+ if ((data->fan_status[i] & FSCHMD_FAN_ALARM) &&
data->fan_act[i])
i2c_smbus_write_byte_data(client,
FSCHMD_REG_FAN_STATE[data->kind][i],
- FSCHMD_FAN_ALARM_MASK);
+ FSCHMD_FAN_ALARM);
}
for (i = 0; i < 3; i++)
i2c_del_driver(&fschmd_driver);
}
-MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_DESCRIPTION("FSC Poseidon, Hermes, Scylla, Heracles and "
"Heimdall driver");
MODULE_LICENSE("GPL");
projects / linux-2.6-omap-h63xx.git / blobdiff