linux-imx

/*

 * adm1026.c - Part of lm_sensors, Linux kernel modules for hardware

 *         monitoring

 * Copyright (C) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>

 * Copyright (C) 2004 Justin Thiessen <jthiessen@penguincomputing.com>

 *

 * Chip details at:

 *

 * <http://www.onsemi.com/PowerSolutions/product.do?id=ADM1026>

 *

 * 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/module.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/jiffies.h>

#include <linux/i2c.h>

#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>

#include <linux/hwmon-vid.h>

#include <linux/err.h>

#include <linux/mutex.h>

​

/* Addresses to scan */

static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };

​

static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,

                -1, -1, -1, -1, -1, -1, -1, -1 };

static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,

                -1, -1, -1, -1, -1, -1, -1, -1 };

static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,

                -1, -1, -1, -1, -1, -1, -1, -1 };

static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,

                -1, -1, -1, -1, -1, -1, -1, -1 };

static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };

module_param_array(gpio_input, int, NULL, 0);

MODULE_PARM_DESC(gpio_input, "List of GPIO pins (0-16) to program as inputs");

module_param_array(gpio_output, int, NULL, 0);

MODULE_PARM_DESC(gpio_output,

         "List of GPIO pins (0-16) to program as outputs");

module_param_array(gpio_inverted, int, NULL, 0);

MODULE_PARM_DESC(gpio_inverted,

         "List of GPIO pins (0-16) to program as inverted");

module_param_array(gpio_normal, int, NULL, 0);

MODULE_PARM_DESC(gpio_normal,

         "List of GPIO pins (0-16) to program as normal/non-inverted");

module_param_array(gpio_fan, int, NULL, 0);

MODULE_PARM_DESC(gpio_fan, "List of GPIO pins (0-7) to program as fan tachs");

​

/* Many ADM1026 constants specified below */

​

/* The ADM1026 registers */

#define ADM1026_REG_CONFIG1 0x00

#define CFG1_MONITOR        0x01

#define CFG1_INT_ENABLE     0x02

#define CFG1_INT_CLEAR      0x04

#define CFG1_AIN8_9     0x08

#define CFG1_THERM_HOT      0x10

#define CFG1_DAC_AFC        0x20

#define CFG1_PWM_AFC        0x40

#define CFG1_RESET      0x80

​

#define ADM1026_REG_CONFIG2 0x01

/* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */

​

#define ADM1026_REG_CONFIG3 0x07

#define CFG3_GPIO16_ENABLE  0x01

#define CFG3_CI_CLEAR       0x02

#define CFG3_VREF_250       0x04

#define CFG3_GPIO16_DIR     0x40

#define CFG3_GPIO16_POL     0x80

​

#define ADM1026_REG_E2CONFIG    0x13

#define E2CFG_READ      0x01

#define E2CFG_WRITE     0x02

#define E2CFG_ERASE     0x04

#define E2CFG_ROM       0x08

#define E2CFG_CLK_EXT       0x80

​