[linux-2.6-block.git] / drivers / hwmon / atxp1.c

/*
    atxp1.c - kernel module for setting CPU VID and general purpose
                     I/Os using the Attansic ATXP1 chip.

    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/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/sysfs.h>

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("System voltages control via Attansic ATXP1");
MODULE_VERSION("0.6.3");
MODULE_AUTHOR("Sebastian Witt <se.witt@gmx.net>");

#define ATXP1_VID	0x00
#define ATXP1_CVID	0x01
#define ATXP1_GPIO1	0x06
#define ATXP1_GPIO2	0x0a
#define ATXP1_VIDENA	0x20
#define ATXP1_VIDMASK	0x1f
#define ATXP1_GPIO1MASK	0x0f

static const unsigned short normal_i2c[] = { 0x37, 0x4e, I2C_CLIENT_END };

I2C_CLIENT_INSMOD_1(atxp1);

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_client *client, int kind,
			struct i2c_board_info *info);

static const struct i2c_device_id atxp1_id[] = {
	{ "atxp1", atxp1 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, atxp1_id);

static struct i2c_driver atxp1_driver = {
	.class		= I2C_CLASS_HWMON,
	.driver = {
		.name	= "atxp1",
	},
	.probe		= atxp1_probe,
	.remove		= atxp1_remove,
	.id_table	= atxp1_id,
	.detect		= atxp1_detect,
	.address_data	= &addr_data,
};

struct atxp1_data {
	struct device *hwmon_dev;
	struct mutex update_lock;
	unsigned long last_updated;
	u8 valid;
	struct {
		u8 vid;		/* VID output register */
		u8 cpu_vid; /* VID input from CPU */
		u8 gpio1;   /* General purpose I/O register 1 */
		u8 gpio2;   /* General purpose I/O register 2 */
	} reg;
	u8 vrm;			/* Detected CPU VRM */
};

static struct atxp1_data * atxp1_update_device(struct device *dev)
{
	struct i2c_client *client;
	struct atxp1_data *data;

	client = to_i2c_client(dev);
	data = i2c_get_clientdata(client);

	mutex_lock(&data->update_lock);

	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {

		/* Update local register data */
		data->reg.vid = i2c_smbus_read_byte_data(client, ATXP1_VID);
		data->reg.cpu_vid = i2c_smbus_read_byte_data(client, ATXP1_CVID);
		data->reg.gpio1 = i2c_smbus_read_byte_data(client, ATXP1_GPIO1);
		data->reg.gpio2 = i2c_smbus_read_byte_data(client, ATXP1_GPIO2);

		data->valid = 1;
	}

	mutex_unlock(&data->update_lock);

	return(data);
}

/* sys file functions for cpu0_vid */
static ssize_t atxp1_showvcore(struct device *dev, struct device_attribute *attr, char *buf)
{
	int size;
	struct atxp1_data *data;

	data = atxp1_update_device(dev);

	size = sprintf(buf, "%d\n", vid_from_reg(data->reg.vid & ATXP1_VIDMASK, data->vrm));

	return size;
}

static ssize_t atxp1_storevcore(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct atxp1_data *data;
	struct i2c_client *client;
	int vid, cvid;
	unsigned int vcore;

	client = to_i2c_client(dev);
	data = atxp1_update_device(dev);

	vcore = simple_strtoul(buf, NULL, 10);
	vcore /= 25;
	vcore *= 25;

	/* Calculate VID */
	vid = vid_to_reg(vcore, data->vrm);

	if (vid < 0) {
		dev_err(dev, "VID calculation failed.\n");
		return -1;
	}

	/* If output enabled, use control register value. Otherwise original CPU VID */
	if (data->reg.vid & ATXP1_VIDENA)
		cvid = data->reg.vid & ATXP1_VIDMASK;
	else
		cvid = data->reg.cpu_vid;

	/* Nothing changed, aborting */
	if (vid == cvid)
		return count;

	dev_dbg(dev, "Setting VCore to %d mV (0x%02x)\n", vcore, vid);

	/* Write every 25 mV step to increase stability */
	if (cvid > vid) {
		for (; cvid >= vid; cvid--) {
        		i2c_smbus_write_byte_data(client, ATXP1_VID, cvid | ATXP1_VIDENA);
		}
	}
	else {
		for (; cvid <= vid; cvid++) {
        		i2c_smbus_write_byte_data(client, ATXP1_VID, cvid | ATXP1_VIDENA);
		}
	}

	data->valid = 0;

	return count;
}

/* CPU core reference voltage
    unit: millivolt
*/
static DEVICE_ATTR(cpu0_vid, S_IRUGO | S_IWUSR, atxp1_showvcore, atxp1_storevcore);

/* sys file functions for GPIO1 */
static ssize_t atxp1_showgpio1(struct device *dev, struct device_attribute *attr, char *buf)
{
	int size;
	struct atxp1_data *data;

	data = atxp1_update_device(dev);

	size = sprintf(buf, "0x%02x\n", data->reg.gpio1 & ATXP1_GPIO1MASK);

	return size;
}

static ssize_t atxp1_storegpio1(struct device *dev, struct device_attribute *attr, const char*buf, size_t count)
{
	struct atxp1_data *data;
	struct i2c_client *client;
	unsigned int value;

	client = to_i2c_client(dev);
	data = atxp1_update_device(dev);

	value = simple_strtoul(buf, NULL, 16);

	value &= ATXP1_GPIO1MASK;

	if (value != (data->reg.gpio1 & ATXP1_GPIO1MASK)) {
		dev_info(dev, "Writing 0x%x to GPIO1.\n", value);

		i2c_smbus_write_byte_data(client, ATXP1_GPIO1, value);

		data->valid = 0;
	}

	return count;
}

/* GPIO1 data register
    unit: Four bit as hex (e.g. 0x0f)
*/
static DEVICE_ATTR(gpio1, S_IRUGO | S_IWUSR, atxp1_showgpio1, atxp1_storegpio1);

/* sys file functions for GPIO2 */
static ssize_t atxp1_showgpio2(struct device *dev, struct device_attribute *attr, char *buf)
{
	int size;
	struct atxp1_data *data;

	data = atxp1_update_device(dev);

	size = sprintf(buf, "0x%02x\n", data->reg.gpio2);

	return size;
}

static ssize_t atxp1_storegpio2(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct atxp1_data *data;
	struct i2c_client *client;
	unsigned int value;

	client = to_i2c_client(dev);
	data = atxp1_update_device(dev);

	value = simple_strtoul(buf, NULL, 16) & 0xff;

	if (value != data->reg.gpio2) {
		dev_info(dev, "Writing 0x%x to GPIO1.\n", value);

		i2c_smbus_write_byte_data(client, ATXP1_GPIO2, value);

		data->valid = 0;
	}

	return count;
}

/* GPIO2 data register
    unit: Eight bit as hex (e.g. 0xff)
*/
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 const struct attribute_group atxp1_group = {
	.attrs = atxp1_attributes,
};


/* Return 0 if detection is successful, -ENODEV otherwise */
static int atxp1_detect(struct i2c_client *new_client, int kind,
			struct i2c_board_info *info)
{
	struct i2c_adapter *adapter = new_client->adapter;

	u8 temp;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		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)))
		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);

	if (!((i2c_smbus_read_byte_data(new_client, 0x10) == temp) &&
	      (i2c_smbus_read_byte_data(new_client, 0x11) == temp)))
		return -ENODEV;

	/* Get VRM */
	temp = vid_which_vrm();

	if ((temp != 90) && (temp != 91)) {
		dev_err(&adapter->dev, "atxp1: Not supporting VRM %d.%d\n",
				temp / 10, temp % 10);
		return -ENODEV;
	}

	strlcpy(info->type, "atxp1", I2C_NAME_SIZE);

	return 0;
}

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;

	mutex_init(&data->update_lock);

	/* Register sysfs hooks */
	if ((err = sysfs_create_group(&new_client->dev.kobj, &atxp1_group)))
		goto exit_free;

	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;
	}

	dev_info(&new_client->dev, "Using VRM: %d.%d\n",
			 data->vrm / 10, data->vrm % 10);

	return 0;

exit_remove_files:
	sysfs_remove_group(&new_client->dev.kobj, &atxp1_group);
exit_free:
	kfree(data);
exit:
	return err;
};

static int atxp1_remove(struct i2c_client *client)
{
	struct atxp1_data * data = i2c_get_clientdata(client);

	hwmon_device_unregister(data->hwmon_dev);
	sysfs_remove_group(&client->dev.kobj, &atxp1_group);

	kfree(data);

	return 0;
};

static int __init atxp1_init(void)
{
	return i2c_add_driver(&atxp1_driver);
};

static void __exit atxp1_exit(void)
{
	i2c_del_driver(&atxp1_driver);
};

module_init(atxp1_init);
module_exit(atxp1_exit);
Commit	Line	Data
9cb7d184 SW	1	/*
	2	atxp1.c - kernel module for setting CPU VID and general purpose
	3	I/Os using the Attansic ATXP1 chip.
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	18
	19	*/
	20
	21	#include <linux/kernel.h>
	22	#include <linux/init.h>
	23	#include <linux/module.h>
0cacdf29	24	#include <linux/jiffies.h>
9cb7d184	25	#include <linux/i2c.h>
943b0830	26	#include <linux/hwmon.h>
303760b4	27	#include <linux/hwmon-vid.h>
943b0830	28	#include <linux/err.h>
9a61bf63	29	#include <linux/mutex.h>
a5ebe668	30	#include <linux/sysfs.h>
9cb7d184 SW	31
	32	MODULE_LICENSE("GPL");
	33	MODULE_DESCRIPTION("System voltages control via Attansic ATXP1");
13b3c3fa	34	MODULE_VERSION("0.6.3");
9cb7d184 SW	35	MODULE_AUTHOR("Sebastian Witt <se.witt@gmx.net>");
	36
	37	#define ATXP1_VID 0x00
	38	#define ATXP1_CVID 0x01
	39	#define ATXP1_GPIO1 0x06
	40	#define ATXP1_GPIO2 0x0a
	41	#define ATXP1_VIDENA 0x20
	42	#define ATXP1_VIDMASK 0x1f
	43	#define ATXP1_GPIO1MASK 0x0f
	44
25e9c86d	45	static const unsigned short normal_i2c[] = { 0x37, 0x4e, I2C_CLIENT_END };
9cb7d184	46
f4b50261	47	I2C_CLIENT_INSMOD_1(atxp1);
9cb7d184	48
71163c7c JD	49	static int atxp1_probe(struct i2c_client *client,
	50	const struct i2c_device_id *id);
	51	static int atxp1_remove(struct i2c_client *client);
9cb7d184	52	static struct atxp1_data * atxp1_update_device(struct device *dev);
71163c7c JD	53	static int atxp1_detect(struct i2c_client *client, int kind,
	54	struct i2c_board_info *info);
	55
	56	static const struct i2c_device_id atxp1_id[] = {
	57	{ "atxp1", atxp1 },
	58	{ }
	59	};
	60	MODULE_DEVICE_TABLE(i2c, atxp1_id);
9cb7d184 SW	61
9cb7d184 SW	62	static struct i2c_driver atxp1_driver = {
71163c7c	63	.class = I2C_CLASS_HWMON,
cdaf7934	64	.driver = {
cdaf7934 LR	65	.name = "atxp1",
cdaf7934 LR	66	},
71163c7c JD	67	.probe = atxp1_probe,
	68	.remove = atxp1_remove,
	69	.id_table = atxp1_id,
	70	.detect = atxp1_detect,
	71	.address_data = &addr_data,
9cb7d184 SW	72	};
	73
	74	struct atxp1_data {
1beeffe4	75	struct device *hwmon_dev;
9a61bf63	76	struct mutex update_lock;
9cb7d184 SW	77	unsigned long last_updated;
	78	u8 valid;
	79	struct {
	80	u8 vid; /* VID output register */
	81	u8 cpu_vid; /* VID input from CPU */
	82	u8 gpio1; /* General purpose I/O register 1 */
	83	u8 gpio2; /* General purpose I/O register 2 */
	84	} reg;
	85	u8 vrm; /* Detected CPU VRM */
	86	};
	87
	88	static struct atxp1_data * atxp1_update_device(struct device *dev)
	89	{
	90	struct i2c_client *client;
	91	struct atxp1_data *data;
	92
	93	client = to_i2c_client(dev);
	94	data = i2c_get_clientdata(client);
	95
9a61bf63	96	mutex_lock(&data->update_lock);
9cb7d184	97
0cacdf29	98	if (time_after(jiffies, data->last_updated + HZ) \|\| !data->valid) {
9cb7d184 SW	99
	100	/* Update local register data */
	101	data->reg.vid = i2c_smbus_read_byte_data(client, ATXP1_VID);
	102	data->reg.cpu_vid = i2c_smbus_read_byte_data(client, ATXP1_CVID);
	103	data->reg.gpio1 = i2c_smbus_read_byte_data(client, ATXP1_GPIO1);
	104	data->reg.gpio2 = i2c_smbus_read_byte_data(client, ATXP1_GPIO2);
	105
	106	data->valid = 1;
	107	}
	108
9a61bf63	109	mutex_unlock(&data->update_lock);
9cb7d184 SW	110
	111	return(data);
	112	}
	113
	114	/* sys file functions for cpu0_vid */
6f637a64	115	static ssize_t atxp1_showvcore(struct device dev, struct device_attribute attr, char *buf)
9cb7d184 SW	116	{
	117	int size;
	118	struct atxp1_data *data;
	119
	120	data = atxp1_update_device(dev);
	121
	122	size = sprintf(buf, "%d\n", vid_from_reg(data->reg.vid & ATXP1_VIDMASK, data->vrm));
	123
	124	return size;
	125	}
	126
6f637a64	127	static ssize_t atxp1_storevcore(struct device dev, struct device_attribute attr, const char *buf, size_t count)
9cb7d184 SW	128	{
	129	struct atxp1_data *data;
	130	struct i2c_client *client;
c41bdb52	131	int vid, cvid;
9cb7d184 SW	132	unsigned int vcore;
	133
	134	client = to_i2c_client(dev);
	135	data = atxp1_update_device(dev);
	136
	137	vcore = simple_strtoul(buf, NULL, 10);
	138	vcore /= 25;
	139	vcore *= 25;
	140
	141	/* Calculate VID */
	142	vid = vid_to_reg(vcore, data->vrm);
	143
	144	if (vid < 0) {
	145	dev_err(dev, "VID calculation failed.\n");
	146	return -1;
	147	}
	148
	149	/* If output enabled, use control register value. Otherwise original CPU VID */
	150	if (data->reg.vid & ATXP1_VIDENA)
	151	cvid = data->reg.vid & ATXP1_VIDMASK;
	152	else
	153	cvid = data->reg.cpu_vid;
	154
	155	/* Nothing changed, aborting */
	156	if (vid == cvid)
	157	return count;
	158
164cad9b	159	dev_dbg(dev, "Setting VCore to %d mV (0x%02x)\n", vcore, vid);
9cb7d184 SW	160
	161	/* Write every 25 mV step to increase stability */
	162	if (cvid > vid) {
	163	for (; cvid >= vid; cvid--) {
	164	i2c_smbus_write_byte_data(client, ATXP1_VID, cvid \| ATXP1_VIDENA);
	165	}
	166	}
	167	else {
	168	for (; cvid <= vid; cvid++) {
	169	i2c_smbus_write_byte_data(client, ATXP1_VID, cvid \| ATXP1_VIDENA);
	170	}
	171	}
	172
	173	data->valid = 0;
	174
	175	return count;
	176	}
	177
	178	/* CPU core reference voltage
	179	unit: millivolt
	180	*/
	181	static DEVICE_ATTR(cpu0_vid, S_IRUGO \| S_IWUSR, atxp1_showvcore, atxp1_storevcore);
	182
	183	/* sys file functions for GPIO1 */
6f637a64	184	static ssize_t atxp1_showgpio1(struct device dev, struct device_attribute attr, char *buf)
9cb7d184 SW	185	{
	186	int size;
	187	struct atxp1_data *data;
	188
	189	data = atxp1_update_device(dev);
	190
	191	size = sprintf(buf, "0x%02x\n", data->reg.gpio1 & ATXP1_GPIO1MASK);
	192
	193	return size;
	194	}
	195
6f637a64	196	static ssize_t atxp1_storegpio1(struct device dev, struct device_attribute attr, const char*buf, size_t count)
9cb7d184 SW	197	{
	198	struct atxp1_data *data;
	199	struct i2c_client *client;
	200	unsigned int value;
	201
	202	client = to_i2c_client(dev);
	203	data = atxp1_update_device(dev);
	204
	205	value = simple_strtoul(buf, NULL, 16);
	206
	207	value &= ATXP1_GPIO1MASK;
	208
	209	if (value != (data->reg.gpio1 & ATXP1_GPIO1MASK)) {
	210	dev_info(dev, "Writing 0x%x to GPIO1.\n", value);
	211
	212	i2c_smbus_write_byte_data(client, ATXP1_GPIO1, value);
	213
	214	data->valid = 0;
	215	}
	216
	217	return count;
	218	}
	219
	220	/* GPIO1 data register
	221	unit: Four bit as hex (e.g. 0x0f)
	222	*/
	223	static DEVICE_ATTR(gpio1, S_IRUGO \| S_IWUSR, atxp1_showgpio1, atxp1_storegpio1);
	224
	225	/* sys file functions for GPIO2 */
6f637a64	226	static ssize_t atxp1_showgpio2(struct device dev, struct device_attribute attr, char *buf)
9cb7d184 SW	227	{
	228	int size;
	229	struct atxp1_data *data;
	230
	231	data = atxp1_update_device(dev);
	232
	233	size = sprintf(buf, "0x%02x\n", data->reg.gpio2);
	234
	235	return size;
	236	}
	237
6f637a64	238	static ssize_t atxp1_storegpio2(struct device dev, struct device_attribute attr, const char *buf, size_t count)
9cb7d184 SW	239	{
	240	struct atxp1_data *data;
	241	struct i2c_client *client;
	242	unsigned int value;
	243
	244	client = to_i2c_client(dev);
	245	data = atxp1_update_device(dev);
	246
	247	value = simple_strtoul(buf, NULL, 16) & 0xff;
	248
	249	if (value != data->reg.gpio2) {
	250	dev_info(dev, "Writing 0x%x to GPIO1.\n", value);
	251
	252	i2c_smbus_write_byte_data(client, ATXP1_GPIO2, value);
	253
	254	data->valid = 0;
	255	}
	256
	257	return count;
	258	}
	259
	260	/* GPIO2 data register
	261	unit: Eight bit as hex (e.g. 0xff)
	262	*/
	263	static DEVICE_ATTR(gpio2, S_IRUGO \| S_IWUSR, atxp1_showgpio2, atxp1_storegpio2);
	264
a5ebe668 JD	265	static struct attribute *atxp1_attributes[] = {
	266	&dev_attr_gpio1.attr,
	267	&dev_attr_gpio2.attr,
	268	&dev_attr_cpu0_vid.attr,
	269	NULL
	270	};
	271
	272	static const struct attribute_group atxp1_group = {
	273	.attrs = atxp1_attributes,
	274	};
	275
9cb7d184	276
71163c7c JD	277	/* Return 0 if detection is successful, -ENODEV otherwise */
	278	static int atxp1_detect(struct i2c_client *new_client, int kind,
	279	struct i2c_board_info *info)
9cb7d184	280	{
71163c7c	281	struct i2c_adapter *adapter = new_client->adapter;
9cb7d184	282
9cb7d184 SW	283	u8 temp;
	284
	285	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
71163c7c	286	return -ENODEV;
9cb7d184 SW	287
	288	/* Detect ATXP1, checking if vendor ID registers are all zero */
	289	if (!((i2c_smbus_read_byte_data(new_client, 0x3e) == 0) &&
	290	(i2c_smbus_read_byte_data(new_client, 0x3f) == 0) &&
	291	(i2c_smbus_read_byte_data(new_client, 0xfe) == 0) &&
13b3c3fa JD	292	(i2c_smbus_read_byte_data(new_client, 0xff) == 0)))
13b3c3fa JD	293	return -ENODEV;
9cb7d184	294
13b3c3fa JD	295	/* No vendor ID, now checking if registers 0x10,0x11 (non-existent)
	296	* showing the same as register 0x00 */
	297	temp = i2c_smbus_read_byte_data(new_client, 0x00);
9cb7d184	298
13b3c3fa JD	299	if (!((i2c_smbus_read_byte_data(new_client, 0x10) == temp) &&
	300	(i2c_smbus_read_byte_data(new_client, 0x11) == temp)))
	301	return -ENODEV;
9cb7d184 SW	302
9cb7d184 SW	303	/* Get VRM */
71163c7c	304	temp = vid_which_vrm();
9cb7d184	305
71163c7c JD	306	if ((temp != 90) && (temp != 91)) {
	307	dev_err(&adapter->dev, "atxp1: Not supporting VRM %d.%d\n",
	308	temp / 10, temp % 10);
	309	return -ENODEV;
9cb7d184 SW	310	}
9cb7d184 SW	311
71163c7c	312	strlcpy(info->type, "atxp1", I2C_NAME_SIZE);
9cb7d184	313
71163c7c JD	314	return 0;
71163c7c JD	315	}
9cb7d184	316
71163c7c JD	317	static int atxp1_probe(struct i2c_client *new_client,
	318	const struct i2c_device_id *id)
	319	{
	320	struct atxp1_data *data;
	321	int err;
9cb7d184	322
71163c7c JD	323	data = kzalloc(sizeof(struct atxp1_data), GFP_KERNEL);
	324	if (!data) {
	325	err = -ENOMEM;
	326	goto exit;
9cb7d184 SW	327	}
9cb7d184 SW	328
71163c7c JD	329	/* Get VRM */
	330	data->vrm = vid_which_vrm();
	331
	332	i2c_set_clientdata(new_client, data);
	333	data->valid = 0;
	334
	335	mutex_init(&data->update_lock);
	336
a5ebe668 JD	337	/* Register sysfs hooks */
a5ebe668 JD	338	if ((err = sysfs_create_group(&new_client->dev.kobj, &atxp1_group)))
71163c7c	339	goto exit_free;
a5ebe668	340
1beeffe4 TJ	341	data->hwmon_dev = hwmon_device_register(&new_client->dev);
	342	if (IS_ERR(data->hwmon_dev)) {
	343	err = PTR_ERR(data->hwmon_dev);
a5ebe668	344	goto exit_remove_files;
943b0830 MH	345	}
943b0830 MH	346
9cb7d184 SW	347	dev_info(&new_client->dev, "Using VRM: %d.%d\n",
	348	data->vrm / 10, data->vrm % 10);
	349
	350	return 0;
	351
a5ebe668 JD	352	exit_remove_files:
a5ebe668 JD	353	sysfs_remove_group(&new_client->dev.kobj, &atxp1_group);
9cb7d184 SW	354	exit_free:
	355	kfree(data);
	356	exit:
	357	return err;
	358	};
	359
71163c7c	360	static int atxp1_remove(struct i2c_client *client)
9cb7d184	361	{
943b0830	362	struct atxp1_data * data = i2c_get_clientdata(client);
9cb7d184	363
1beeffe4	364	hwmon_device_unregister(data->hwmon_dev);
a5ebe668	365	sysfs_remove_group(&client->dev.kobj, &atxp1_group);
943b0830	366
71163c7c	367	kfree(data);
9cb7d184	368
71163c7c	369	return 0;
9cb7d184 SW	370	};
	371
	372	static int __init atxp1_init(void)
	373	{
	374	return i2c_add_driver(&atxp1_driver);
	375	};
	376
	377	static void __exit atxp1_exit(void)
	378	{
	379	i2c_del_driver(&atxp1_driver);
	380	};
	381
	382	module_init(atxp1_init);
	383	module_exit(atxp1_exit);