linux-imx

// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * lm3533-ctrlbank.c -- LM3533 Generic Control Bank interface

 *

 * Copyright (C) 2011-2012 Texas Instruments

 *

 * Author: Johan Hovold <jhovold@gmail.com>

 */

​

#include <linux/device.h>

#include <linux/module.h>

​

#include <linux/mfd/lm3533.h>

​

​

#define LM3533_MAX_CURRENT_MIN      5000

#define LM3533_MAX_CURRENT_MAX      29800

#define LM3533_MAX_CURRENT_STEP     800

​

#define LM3533_BRIGHTNESS_MAX       255

#define LM3533_PWM_MAX          0x3f

​

#define LM3533_REG_PWM_BASE     0x14

#define LM3533_REG_MAX_CURRENT_BASE 0x1f

#define LM3533_REG_CTRLBANK_ENABLE  0x27

#define LM3533_REG_BRIGHTNESS_BASE  0x40

​

​

static inline u8 lm3533_ctrlbank_get_reg(struct lm3533_ctrlbank *cb, u8 base)

{

    return base + cb->id;

}

​

int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb)

{

    u8 mask;

    int ret;

​

    dev_dbg(cb->dev, "%s - %d\n", __func__, cb->id);

​

    mask = 1 << cb->id;

    ret = lm3533_update(cb->lm3533, LM3533_REG_CTRLBANK_ENABLE,

                                mask, mask);

    if (ret)

        dev_err(cb->dev, "failed to enable ctrlbank %d\n", cb->id);

​

    return ret;

}

EXPORT_SYMBOL_GPL(lm3533_ctrlbank_enable);

​

int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb)

{

    u8 mask;

    int ret;

​

    dev_dbg(cb->dev, "%s - %d\n", __func__, cb->id);

​

    mask = 1 << cb->id;

    ret = lm3533_update(cb->lm3533, LM3533_REG_CTRLBANK_ENABLE, 0, mask);

    if (ret)

        dev_err(cb->dev, "failed to disable ctrlbank %d\n", cb->id);

​

    return ret;