[deliverable/linux.git] / drivers / hwmon / pmbus / max34440.c

/*
 * Hardware monitoring driver for Maxim MAX34440/MAX34441
 *
 * Copyright (c) 2011 Ericsson AB.
 *
 * 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/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include "pmbus.h"

enum chips { max34440, max34441 };

#define MAX34440_MFR_VOUT_PEAK		0xd4
#define MAX34440_MFR_IOUT_PEAK		0xd5
#define MAX34440_MFR_TEMPERATURE_PEAK	0xd6

#define MAX34440_STATUS_OC_WARN		(1 << 0)
#define MAX34440_STATUS_OC_FAULT	(1 << 1)
#define MAX34440_STATUS_OT_FAULT	(1 << 5)
#define MAX34440_STATUS_OT_WARN		(1 << 6)

static int max34440_read_word_data(struct i2c_client *client, int page, int reg)
{
	int ret;

	switch (reg) {
	case PMBUS_VIRT_READ_VOUT_MAX:
		ret = pmbus_read_word_data(client, page,
					   MAX34440_MFR_VOUT_PEAK);
		break;
	case PMBUS_VIRT_READ_IOUT_MAX:
		ret = pmbus_read_word_data(client, page,
					   MAX34440_MFR_IOUT_PEAK);
		break;
	case PMBUS_VIRT_READ_TEMP_MAX:
		ret = pmbus_read_word_data(client, page,
					   MAX34440_MFR_TEMPERATURE_PEAK);
		break;
	case PMBUS_VIRT_RESET_VOUT_HISTORY:
	case PMBUS_VIRT_RESET_IOUT_HISTORY:
	case PMBUS_VIRT_RESET_TEMP_HISTORY:
		ret = 0;
		break;
	default:
		ret = -ENODATA;
		break;
	}
	return ret;
}

static int max34440_write_word_data(struct i2c_client *client, int page,
				    int reg, u16 word)
{
	int ret;

	switch (reg) {
	case PMBUS_VIRT_RESET_VOUT_HISTORY:
		ret = pmbus_write_word_data(client, page,
					    MAX34440_MFR_VOUT_PEAK, 0);
		break;
	case PMBUS_VIRT_RESET_IOUT_HISTORY:
		ret = pmbus_write_word_data(client, page,
					    MAX34440_MFR_IOUT_PEAK, 0);
		break;
	case PMBUS_VIRT_RESET_TEMP_HISTORY:
		ret = pmbus_write_word_data(client, page,
					    MAX34440_MFR_TEMPERATURE_PEAK,
					    0xffff);
		break;
	default:
		ret = -ENODATA;
		break;
	}
	return ret;
}

static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
{
	int ret = 0;
	int mfg_status;

	if (page >= 0) {
		ret = pmbus_set_page(client, page);
		if (ret < 0)
			return ret;
	}

	switch (reg) {
	case PMBUS_STATUS_IOUT:
		mfg_status = pmbus_read_word_data(client, 0,
						  PMBUS_STATUS_MFR_SPECIFIC);
		if (mfg_status < 0)
			return mfg_status;
		if (mfg_status & MAX34440_STATUS_OC_WARN)
			ret |= PB_IOUT_OC_WARNING;
		if (mfg_status & MAX34440_STATUS_OC_FAULT)
			ret |= PB_IOUT_OC_FAULT;
		break;
	case PMBUS_STATUS_TEMPERATURE:
		mfg_status = pmbus_read_word_data(client, 0,
						  PMBUS_STATUS_MFR_SPECIFIC);
		if (mfg_status < 0)
			return mfg_status;
		if (mfg_status & MAX34440_STATUS_OT_WARN)
			ret |= PB_TEMP_OT_WARNING;
		if (mfg_status & MAX34440_STATUS_OT_FAULT)
			ret |= PB_TEMP_OT_FAULT;
		break;
	default:
		ret = -ENODATA;
		break;
	}
	return ret;
}

static struct pmbus_driver_info max34440_info[] = {
	[max34440] = {
		.pages = 14,
		.format[PSC_VOLTAGE_IN] = direct,
		.format[PSC_VOLTAGE_OUT] = direct,
		.format[PSC_TEMPERATURE] = direct,
		.format[PSC_CURRENT_OUT] = direct,
		.m[PSC_VOLTAGE_IN] = 1,
		.b[PSC_VOLTAGE_IN] = 0,
		.R[PSC_VOLTAGE_IN] = 3,	    /* R = 0 in datasheet reflects mV */
		.m[PSC_VOLTAGE_OUT] = 1,
		.b[PSC_VOLTAGE_OUT] = 0,
		.R[PSC_VOLTAGE_OUT] = 3,    /* R = 0 in datasheet reflects mV */
		.m[PSC_CURRENT_OUT] = 1,
		.b[PSC_CURRENT_OUT] = 0,
		.R[PSC_CURRENT_OUT] = 3,    /* R = 0 in datasheet reflects mA */
		.m[PSC_TEMPERATURE] = 1,
		.b[PSC_TEMPERATURE] = 0,
		.R[PSC_TEMPERATURE] = 2,
		.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.read_byte_data = max34440_read_byte_data,
		.read_word_data = max34440_read_word_data,
		.write_word_data = max34440_write_word_data,
	},
	[max34441] = {
		.pages = 12,
		.format[PSC_VOLTAGE_IN] = direct,
		.format[PSC_VOLTAGE_OUT] = direct,
		.format[PSC_TEMPERATURE] = direct,
		.format[PSC_CURRENT_OUT] = direct,
		.format[PSC_FAN] = direct,
		.m[PSC_VOLTAGE_IN] = 1,
		.b[PSC_VOLTAGE_IN] = 0,
		.R[PSC_VOLTAGE_IN] = 3,
		.m[PSC_VOLTAGE_OUT] = 1,
		.b[PSC_VOLTAGE_OUT] = 0,
		.R[PSC_VOLTAGE_OUT] = 3,
		.m[PSC_CURRENT_OUT] = 1,
		.b[PSC_CURRENT_OUT] = 0,
		.R[PSC_CURRENT_OUT] = 3,
		.m[PSC_TEMPERATURE] = 1,
		.b[PSC_TEMPERATURE] = 0,
		.R[PSC_TEMPERATURE] = 2,
		.m[PSC_FAN] = 1,
		.b[PSC_FAN] = 0,
		.R[PSC_FAN] = 0,
		.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
		.func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
		.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
		.read_byte_data = max34440_read_byte_data,
		.read_word_data = max34440_read_word_data,
		.write_word_data = max34440_write_word_data,
	},
};

static int max34440_probe(struct i2c_client *client,
			  const struct i2c_device_id *id)
{
	return pmbus_do_probe(client, id, &max34440_info[id->driver_data]);
}

static int max34440_remove(struct i2c_client *client)
{
	pmbus_do_remove(client);
	return 0;
}

static const struct i2c_device_id max34440_id[] = {
	{"max34440", max34440},
	{"max34441", max34441},
	{}
};

MODULE_DEVICE_TABLE(i2c, max34440_id);

/* This is the driver that will be inserted */
static struct i2c_driver max34440_driver = {
	.driver = {
		   .name = "max34440",
		   },
	.probe = max34440_probe,
	.remove = max34440_remove,
	.id_table = max34440_id,
};

static int __init max34440_init(void)
{
	return i2c_add_driver(&max34440_driver);
}

static void __exit max34440_exit(void)
{
	i2c_del_driver(&max34440_driver);
}

MODULE_AUTHOR("Guenter Roeck");
MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
MODULE_LICENSE("GPL");
module_init(max34440_init);
module_exit(max34440_exit);
Commit	Line	Data
a3eeb453 GR	1	/*
	2	* Hardware monitoring driver for Maxim MAX34440/MAX34441
	3	*
	4	* Copyright (c) 2011 Ericsson AB.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	19	*/
	20
	21	#include <linux/kernel.h>
	22	#include <linux/module.h>
	23	#include <linux/init.h>
	24	#include <linux/err.h>
	25	#include <linux/i2c.h>
	26	#include "pmbus.h"
	27
	28	enum chips { max34440, max34441 };
	29
98591dbe GR	30	#define MAX34440_MFR_VOUT_PEAK 0xd4
	31	#define MAX34440_MFR_IOUT_PEAK 0xd5
	32	#define MAX34440_MFR_TEMPERATURE_PEAK 0xd6
	33
a3eeb453 GR	34	#define MAX34440_STATUS_OC_WARN (1 << 0)
	35	#define MAX34440_STATUS_OC_FAULT (1 << 1)
	36	#define MAX34440_STATUS_OT_FAULT (1 << 5)
	37	#define MAX34440_STATUS_OT_WARN (1 << 6)
	38
98591dbe GR	39	static int max34440_read_word_data(struct i2c_client *client, int page, int reg)
	40	{
	41	int ret;
	42
	43	switch (reg) {
	44	case PMBUS_VIRT_READ_VOUT_MAX:
	45	ret = pmbus_read_word_data(client, page,
	46	MAX34440_MFR_VOUT_PEAK);
	47	break;
	48	case PMBUS_VIRT_READ_IOUT_MAX:
	49	ret = pmbus_read_word_data(client, page,
	50	MAX34440_MFR_IOUT_PEAK);
	51	break;
	52	case PMBUS_VIRT_READ_TEMP_MAX:
	53	ret = pmbus_read_word_data(client, page,
	54	MAX34440_MFR_TEMPERATURE_PEAK);
	55	break;
	56	case PMBUS_VIRT_RESET_VOUT_HISTORY:
	57	case PMBUS_VIRT_RESET_IOUT_HISTORY:
	58	case PMBUS_VIRT_RESET_TEMP_HISTORY:
	59	ret = 0;
	60	break;
	61	default:
	62	ret = -ENODATA;
	63	break;
	64	}
	65	return ret;
	66	}
	67
	68	static int max34440_write_word_data(struct i2c_client *client, int page,
	69	int reg, u16 word)
	70	{
	71	int ret;
	72
	73	switch (reg) {
	74	case PMBUS_VIRT_RESET_VOUT_HISTORY:
	75	ret = pmbus_write_word_data(client, page,
	76	MAX34440_MFR_VOUT_PEAK, 0);
	77	break;
	78	case PMBUS_VIRT_RESET_IOUT_HISTORY:
	79	ret = pmbus_write_word_data(client, page,
	80	MAX34440_MFR_IOUT_PEAK, 0);
	81	break;
	82	case PMBUS_VIRT_RESET_TEMP_HISTORY:
	83	ret = pmbus_write_word_data(client, page,
	84	MAX34440_MFR_TEMPERATURE_PEAK,
	85	0xffff);
	86	break;
	87	default:
	88	ret = -ENODATA;
	89	break;
	90	}
	91	return ret;
	92	}
	93
2cfa6aed	94	static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
a3eeb453	95	{
da8e48ab	96	int ret = 0;
a3eeb453 GR	97	int mfg_status;
a3eeb453 GR	98
da8e48ab GR	99	if (page >= 0) {
	100	ret = pmbus_set_page(client, page);
	101	if (ret < 0)
	102	return ret;
	103	}
a3eeb453 GR	104
	105	switch (reg) {
	106	case PMBUS_STATUS_IOUT:
	107	mfg_status = pmbus_read_word_data(client, 0,
	108	PMBUS_STATUS_MFR_SPECIFIC);
	109	if (mfg_status < 0)
	110	return mfg_status;
	111	if (mfg_status & MAX34440_STATUS_OC_WARN)
	112	ret \|= PB_IOUT_OC_WARNING;
	113	if (mfg_status & MAX34440_STATUS_OC_FAULT)
	114	ret \|= PB_IOUT_OC_FAULT;
	115	break;
	116	case PMBUS_STATUS_TEMPERATURE:
	117	mfg_status = pmbus_read_word_data(client, 0,
	118	PMBUS_STATUS_MFR_SPECIFIC);
	119	if (mfg_status < 0)
	120	return mfg_status;
	121	if (mfg_status & MAX34440_STATUS_OT_WARN)
	122	ret \|= PB_TEMP_OT_WARNING;
	123	if (mfg_status & MAX34440_STATUS_OT_FAULT)
	124	ret \|= PB_TEMP_OT_FAULT;
	125	break;
	126	default:
	127	ret = -ENODATA;
	128	break;
	129	}
	130	return ret;
	131	}
	132
	133	static struct pmbus_driver_info max34440_info[] = {
	134	[max34440] = {
	135	.pages = 14,
1061d851 GR	136	.format[PSC_VOLTAGE_IN] = direct,
	137	.format[PSC_VOLTAGE_OUT] = direct,
	138	.format[PSC_TEMPERATURE] = direct,
	139	.format[PSC_CURRENT_OUT] = direct,
a3eeb453 GR	140	.m[PSC_VOLTAGE_IN] = 1,
	141	.b[PSC_VOLTAGE_IN] = 0,
	142	.R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */
	143	.m[PSC_VOLTAGE_OUT] = 1,
	144	.b[PSC_VOLTAGE_OUT] = 0,
	145	.R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */
	146	.m[PSC_CURRENT_OUT] = 1,
	147	.b[PSC_CURRENT_OUT] = 0,
	148	.R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */
	149	.m[PSC_TEMPERATURE] = 1,
	150	.b[PSC_TEMPERATURE] = 0,
	151	.R[PSC_TEMPERATURE] = 2,
	152	.func[0] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	153	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	154	.func[1] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	155	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	156	.func[2] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	157	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	158	.func[3] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	159	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	160	.func[4] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	161	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	162	.func[5] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	163	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	164	.func[6] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	165	.func[7] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	166	.func[8] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	167	.func[9] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	168	.func[10] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	169	.func[11] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	170	.func[12] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	171	.func[13] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
2cfa6aed	172	.read_byte_data = max34440_read_byte_data,
98591dbe GR	173	.read_word_data = max34440_read_word_data,
98591dbe GR	174	.write_word_data = max34440_write_word_data,
a3eeb453 GR	175	},
	176	[max34441] = {
	177	.pages = 12,
1061d851 GR	178	.format[PSC_VOLTAGE_IN] = direct,
	179	.format[PSC_VOLTAGE_OUT] = direct,
	180	.format[PSC_TEMPERATURE] = direct,
	181	.format[PSC_CURRENT_OUT] = direct,
	182	.format[PSC_FAN] = direct,
a3eeb453 GR	183	.m[PSC_VOLTAGE_IN] = 1,
	184	.b[PSC_VOLTAGE_IN] = 0,
	185	.R[PSC_VOLTAGE_IN] = 3,
	186	.m[PSC_VOLTAGE_OUT] = 1,
	187	.b[PSC_VOLTAGE_OUT] = 0,
	188	.R[PSC_VOLTAGE_OUT] = 3,
	189	.m[PSC_CURRENT_OUT] = 1,
	190	.b[PSC_CURRENT_OUT] = 0,
	191	.R[PSC_CURRENT_OUT] = 3,
	192	.m[PSC_TEMPERATURE] = 1,
	193	.b[PSC_TEMPERATURE] = 0,
	194	.R[PSC_TEMPERATURE] = 2,
	195	.m[PSC_FAN] = 1,
	196	.b[PSC_FAN] = 0,
	197	.R[PSC_FAN] = 0,
	198	.func[0] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	199	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	200	.func[1] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	201	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	202	.func[2] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	203	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	204	.func[3] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	205	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	206	.func[4] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT
	207	\| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT,
	208	.func[5] = PMBUS_HAVE_FAN12 \| PMBUS_HAVE_STATUS_FAN12,
	209	.func[6] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	210	.func[7] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	211	.func[8] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	212	.func[9] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	213	.func[10] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
	214	.func[11] = PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP,
2cfa6aed	215	.read_byte_data = max34440_read_byte_data,
98591dbe GR	216	.read_word_data = max34440_read_word_data,
98591dbe GR	217	.write_word_data = max34440_write_word_data,
a3eeb453 GR	218	},
	219	};
	220
	221	static int max34440_probe(struct i2c_client *client,
	222	const struct i2c_device_id *id)
	223	{
	224	return pmbus_do_probe(client, id, &max34440_info[id->driver_data]);
	225	}
	226
	227	static int max34440_remove(struct i2c_client *client)
	228	{
866cf12a GR	229	pmbus_do_remove(client);
866cf12a GR	230	return 0;
a3eeb453 GR	231	}
	232
	233	static const struct i2c_device_id max34440_id[] = {
	234	{"max34440", max34440},
	235	{"max34441", max34441},
	236	{}
	237	};
	238
	239	MODULE_DEVICE_TABLE(i2c, max34440_id);
	240
	241	/* This is the driver that will be inserted */
	242	static struct i2c_driver max34440_driver = {
	243	.driver = {
	244	.name = "max34440",
	245	},
	246	.probe = max34440_probe,
	247	.remove = max34440_remove,
	248	.id_table = max34440_id,
	249	};
	250
	251	static int __init max34440_init(void)
	252	{
	253	return i2c_add_driver(&max34440_driver);
	254	}
	255
	256	static void __exit max34440_exit(void)
	257	{
	258	i2c_del_driver(&max34440_driver);
	259	}
	260
	261	MODULE_AUTHOR("Guenter Roeck");
	262	MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
	263	MODULE_LICENSE("GPL");
	264	module_init(max34440_init);
	265	module_exit(max34440_exit);