linux-imx

/* ADC MFD core driver for sunxi platforms

 *

 * Copyright (c) 2016 Quentin Schulz <quentin.schulz@free-electrons.com>

 *

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

 * under the terms of the GNU General Public License version 2 as published by

 * the Free Software Foundation.

 */

​

#include <linux/interrupt.h>

#include <linux/kernel.h>

#include <linux/mfd/core.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/of_irq.h>

#include <linux/regmap.h>

​

#include <linux/mfd/sun4i-gpadc.h>

​

#define ARCH_SUN4I_A10 0

#define ARCH_SUN5I_A13 1

#define ARCH_SUN6I_A31 2

​

static struct resource adc_resources[] = {

    DEFINE_RES_IRQ_NAMED(SUN4I_GPADC_IRQ_FIFO_DATA, "FIFO_DATA_PENDING"),

    DEFINE_RES_IRQ_NAMED(SUN4I_GPADC_IRQ_TEMP_DATA, "TEMP_DATA_PENDING"),

};

​

static const struct regmap_irq sun4i_gpadc_regmap_irq[] = {

    REGMAP_IRQ_REG(SUN4I_GPADC_IRQ_FIFO_DATA, 0,

               SUN4I_GPADC_INT_FIFOC_TP_DATA_IRQ_EN),

    REGMAP_IRQ_REG(SUN4I_GPADC_IRQ_TEMP_DATA, 0,

               SUN4I_GPADC_INT_FIFOC_TEMP_IRQ_EN),

};

​

static const struct regmap_irq_chip sun4i_gpadc_regmap_irq_chip = {

    .name = "sun4i_gpadc_irq_chip",

    .status_base = SUN4I_GPADC_INT_FIFOS,

    .ack_base = SUN4I_GPADC_INT_FIFOS,

    .mask_base = SUN4I_GPADC_INT_FIFOC,

    .init_ack_masked = true,

    .mask_invert = true,

    .irqs = sun4i_gpadc_regmap_irq,

    .num_irqs = ARRAY_SIZE(sun4i_gpadc_regmap_irq),

    .num_regs = 1,

};

​

static struct mfd_cell sun4i_gpadc_cells[] = {

    {

        .name   = "sun4i-a10-gpadc-iio",

        .resources = adc_resources,

        .num_resources = ARRAY_SIZE(adc_resources),

    },

    { .name = "iio_hwmon" }

};

​

static struct mfd_cell sun5i_gpadc_cells[] = {

    {

        .name   = "sun5i-a13-gpadc-iio",

        .resources = adc_resources,

        .num_resources = ARRAY_SIZE(adc_resources),

    },

    { .name = "iio_hwmon" },