linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * This file is part of STM32 DAC driver

 *

 * Copyright (C) 2017, STMicroelectronics - All Rights Reserved

 * Author: Fabrice Gasnier <fabrice.gasnier@st.com>.

 *

 */

​

#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/module.h>

#include <linux/of_platform.h>

#include <linux/regulator/consumer.h>

#include <linux/reset.h>

​

#include "stm32-dac-core.h"

​

/**

 * struct stm32_dac_priv - stm32 DAC core private data

 * @pclk:       peripheral clock common for all DACs

 * @rst:        peripheral reset control

 * @vref:       regulator reference

 * @common:     Common data for all DAC instances

 */

struct stm32_dac_priv {

    struct clk *pclk;

    struct reset_control *rst;

    struct regulator *vref;

    struct stm32_dac_common common;

};

​

/**

 * struct stm32_dac_cfg - DAC configuration

 * @has_hfsel: DAC has high frequency control

 */

struct stm32_dac_cfg {

    bool has_hfsel;

};

​

static struct stm32_dac_priv *to_stm32_dac_priv(struct stm32_dac_common *com)

{

    return container_of(com, struct stm32_dac_priv, common);

}

​

static const struct regmap_config stm32_dac_regmap_cfg = {

    .reg_bits = 32,

    .val_bits = 32,

    .reg_stride = sizeof(u32),

    .max_register = 0x3fc,

};

​

static int stm32_dac_probe(struct platform_device *pdev)

{

    struct device *dev = &pdev->dev;

    const struct stm32_dac_cfg *cfg;

    struct stm32_dac_priv *priv;

    struct regmap *regmap;

    struct resource *res;

    void __iomem *mmio;

    int ret;

​

    if (!dev->of_node)