#include <linux/module.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
-#include <linux/i2c-sensor.h>
-#include <linux/i2c-vid.h>
#include <linux/hwmon.h>
+#include <linux/hwmon-vid.h>
#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/sysfs.h>
+#include <linux/slab.h>
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("System voltages control via Attansic ATXP1");
-MODULE_VERSION("0.6.2");
+MODULE_VERSION("0.6.3");
MODULE_AUTHOR("Sebastian Witt <se.witt@gmx.net>");
#define ATXP1_VID 0x00
#define ATXP1_VIDMASK 0x1f
#define ATXP1_GPIO1MASK 0x0f
-static unsigned short normal_i2c[] = { 0x37, 0x4e, I2C_CLIENT_END };
-static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
+static const unsigned short normal_i2c[] = { 0x37, 0x4e, I2C_CLIENT_END };
-SENSORS_INSMOD_1(atxp1);
-
-static int atxp1_attach_adapter(struct i2c_adapter * adapter);
-static int atxp1_detach_client(struct i2c_client * client);
+static int atxp1_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int atxp1_remove(struct i2c_client *client);
static struct atxp1_data * atxp1_update_device(struct device *dev);
-static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind);
+static int atxp1_detect(struct i2c_client *client, struct i2c_board_info *info);
+
+static const struct i2c_device_id atxp1_id[] = {
+ { "atxp1", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, atxp1_id);
static struct i2c_driver atxp1_driver = {
- .owner = THIS_MODULE,
- .name = "atxp1",
- .flags = I2C_DF_NOTIFY,
- .attach_adapter = atxp1_attach_adapter,
- .detach_client = atxp1_detach_client,
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "atxp1",
+ },
+ .probe = atxp1_probe,
+ .remove = atxp1_remove,
+ .id_table = atxp1_id,
+ .detect = atxp1_detect,
+ .address_list = normal_i2c,
};
struct atxp1_data {
- struct i2c_client client;
- struct class_device *class_dev;
- struct semaphore update_lock;
+ struct device *hwmon_dev;
+ struct mutex update_lock;
unsigned long last_updated;
u8 valid;
struct {
client = to_i2c_client(dev);
data = i2c_get_clientdata(client);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
data->valid = 1;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return(data);
}
{
struct atxp1_data *data;
struct i2c_client *client;
- char vid;
- char cvid;
+ int vid, cvid;
unsigned int vcore;
client = to_i2c_client(dev);
*/
static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2);
+static struct attribute *atxp1_attributes[] = {
+ &dev_attr_gpio1.attr,
+ &dev_attr_gpio2.attr,
+ &dev_attr_cpu0_vid.attr,
+ NULL
+};
-static int atxp1_attach_adapter(struct i2c_adapter *adapter)
-{
- return i2c_detect(adapter, &addr_data, &atxp1_detect);
+static const struct attribute_group atxp1_group = {
+ .attrs = atxp1_attributes,
};
-static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind)
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int atxp1_detect(struct i2c_client *new_client,
+ struct i2c_board_info *info)
{
- struct i2c_client * new_client;
- struct atxp1_data * data;
- int err = 0;
+ struct i2c_adapter *adapter = new_client->adapter;
+
u8 temp;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto exit;
-
- if (!(data = kmalloc(sizeof(struct atxp1_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
-
- memset(data, 0, sizeof(struct atxp1_data));
- new_client = &data->client;
- i2c_set_clientdata(new_client, data);
-
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &atxp1_driver;
- new_client->flags = 0;
+ return -ENODEV;
/* Detect ATXP1, checking if vendor ID registers are all zero */
if (!((i2c_smbus_read_byte_data(new_client, 0x3e) == 0) &&
(i2c_smbus_read_byte_data(new_client, 0x3f) == 0) &&
(i2c_smbus_read_byte_data(new_client, 0xfe) == 0) &&
- (i2c_smbus_read_byte_data(new_client, 0xff) == 0) )) {
+ (i2c_smbus_read_byte_data(new_client, 0xff) == 0)))
+ return -ENODEV;
- /* No vendor ID, now checking if registers 0x10,0x11 (non-existent)
- * showing the same as register 0x00 */
- temp = i2c_smbus_read_byte_data(new_client, 0x00);
+ /* No vendor ID, now checking if registers 0x10,0x11 (non-existent)
+ * showing the same as register 0x00 */
+ temp = i2c_smbus_read_byte_data(new_client, 0x00);
- if (!((i2c_smbus_read_byte_data(new_client, 0x10) == temp) &&
- (i2c_smbus_read_byte_data(new_client, 0x11) == temp) ))
- goto exit_free;
- }
+ if (!((i2c_smbus_read_byte_data(new_client, 0x10) == temp) &&
+ (i2c_smbus_read_byte_data(new_client, 0x11) == temp)))
+ return -ENODEV;
/* Get VRM */
- data->vrm = i2c_which_vrm();
+ temp = vid_which_vrm();
- if ((data->vrm != 90) && (data->vrm != 91)) {
- dev_err(&new_client->dev, "Not supporting VRM %d.%d\n",
- data->vrm / 10, data->vrm % 10);
- goto exit_free;
+ if ((temp != 90) && (temp != 91)) {
+ dev_err(&adapter->dev, "atxp1: Not supporting VRM %d.%d\n",
+ temp / 10, temp % 10);
+ return -ENODEV;
}
- strncpy(new_client->name, "atxp1", I2C_NAME_SIZE);
+ strlcpy(info->type, "atxp1", I2C_NAME_SIZE);
- data->valid = 0;
+ return 0;
+}
- init_MUTEX(&data->update_lock);
+static int atxp1_probe(struct i2c_client *new_client,
+ const struct i2c_device_id *id)
+{
+ struct atxp1_data *data;
+ int err;
+
+ data = kzalloc(sizeof(struct atxp1_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ /* Get VRM */
+ data->vrm = vid_which_vrm();
+
+ i2c_set_clientdata(new_client, data);
+ data->valid = 0;
- err = i2c_attach_client(new_client);
+ mutex_init(&data->update_lock);
- if (err)
- {
- dev_err(&new_client->dev, "Attach client error.\n");
+ /* Register sysfs hooks */
+ if ((err = sysfs_create_group(&new_client->dev.kobj, &atxp1_group)))
goto exit_free;
- }
- data->class_dev = hwmon_device_register(&new_client->dev);
- if (IS_ERR(data->class_dev)) {
- err = PTR_ERR(data->class_dev);
- goto exit_detach;
+ data->hwmon_dev = hwmon_device_register(&new_client->dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
+ goto exit_remove_files;
}
- device_create_file(&new_client->dev, &dev_attr_gpio1);
- device_create_file(&new_client->dev, &dev_attr_gpio2);
- device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
-
dev_info(&new_client->dev, "Using VRM: %d.%d\n",
data->vrm / 10, data->vrm % 10);
return 0;
-exit_detach:
- i2c_detach_client(new_client);
+exit_remove_files:
+ sysfs_remove_group(&new_client->dev.kobj, &atxp1_group);
exit_free:
kfree(data);
exit:
return err;
};
-static int atxp1_detach_client(struct i2c_client * client)
+static int atxp1_remove(struct i2c_client *client)
{
struct atxp1_data * data = i2c_get_clientdata(client);
- int err;
- hwmon_device_unregister(data->class_dev);
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &atxp1_group);
- err = i2c_detach_client(client);
-
- if (err)
- dev_err(&client->dev, "Failed to detach client.\n");
- else
- kfree(data);
+ kfree(data);
- return err;
+ return 0;
};
static int __init atxp1_init(void)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff