linux-imx

/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * 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.

 */

​

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/errno.h>

#include <linux/slab.h>

#include <linux/input.h>

#include <linux/interrupt.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>

#include <linux/log2.h>

#include <linux/of.h>

#include <linux/of_device.h>

​

#define PON_CNTL_1 0x1C

#define PON_CNTL_PULL_UP BIT(7)

#define PON_CNTL_TRIG_DELAY_MASK (0x7)

#define PON_CNTL_1_PULL_UP_EN           0xe0

#define PON_CNTL_1_USB_PWR_EN           0x10

#define PON_CNTL_1_WD_EN_RESET          0x08

​

#define PM8058_SLEEP_CTRL           0x02b

#define PM8921_SLEEP_CTRL           0x10a

​

#define SLEEP_CTRL_SMPL_EN_RESET        0x04

​

/* Regulator master enable addresses */

#define REG_PM8058_VREG_EN_MSM          0x018

#define REG_PM8058_VREG_EN_GRP_5_4      0x1c8

​

/* Regulator control registers for shutdown/reset */

#define PM8058_S0_CTRL              0x004

#define PM8058_S1_CTRL              0x005

#define PM8058_S3_CTRL              0x111

#define PM8058_L21_CTRL             0x120

#define PM8058_L22_CTRL             0x121

​

#define PM8058_REGULATOR_ENABLE_MASK        0x80

#define PM8058_REGULATOR_ENABLE         0x80

#define PM8058_REGULATOR_DISABLE        0x00

#define PM8058_REGULATOR_PULL_DOWN_MASK     0x40

#define PM8058_REGULATOR_PULL_DOWN_EN       0x40

​

/* Buck CTRL register */

#define PM8058_SMPS_LEGACY_VREF_SEL     0x20

#define PM8058_SMPS_LEGACY_VPROG_MASK       0x1f

#define PM8058_SMPS_ADVANCED_BAND_MASK      0xC0

#define PM8058_SMPS_ADVANCED_BAND_SHIFT     6

#define PM8058_SMPS_ADVANCED_VPROG_MASK     0x3f

​

/* Buck TEST2 registers for shutdown/reset */

#define PM8058_S0_TEST2             0x084

#define PM8058_S1_TEST2             0x085

#define PM8058_S3_TEST2             0x11a

​

#define PM8058_REGULATOR_BANK_WRITE     0x80

#define PM8058_REGULATOR_BANK_MASK      0x70

#define PM8058_REGULATOR_BANK_SHIFT     4

#define PM8058_REGULATOR_BANK_SEL(n)    ((n) << PM8058_REGULATOR_BANK_SHIFT)

​

/* Buck TEST2 register bank 1 */

#define PM8058_SMPS_LEGACY_VLOW_SEL     0x01

​

/* Buck TEST2 register bank 7 */

#define PM8058_SMPS_ADVANCED_MODE_MASK      0x02

#define PM8058_SMPS_ADVANCED_MODE       0x02

#define PM8058_SMPS_LEGACY_MODE         0x00

​

/**

 * struct pmic8xxx_pwrkey - pmic8xxx pwrkey information

 * @key_press_irq: key press irq number

 * @regmap: device regmap

 * @shutdown_fn: shutdown configuration function

 */

struct pmic8xxx_pwrkey {

    int key_press_irq;

    struct regmap *regmap;

    int (*shutdown_fn)(struct pmic8xxx_pwrkey *, bool);

};

​

static irqreturn_t pwrkey_press_irq(int irq, void *_pwr)

{