// SPDX-License-Identifier: GPL-2.0
//
// regmap based irq_chip
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/device.h>
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include "internal.h"
struct regmap_irq_chip_data {
struct mutex lock;
struct irq_chip irq_chip;
struct regmap *map;
const struct regmap_irq_chip *chip;
int irq_base;
struct irq_domain *domain;
int irq;
int wake_count;
unsigned int mask_base;
unsigned int unmask_base;
void *status_reg_buf;
unsigned int *main_status_buf;
unsigned int *status_buf;
unsigned int *mask_buf;
unsigned int *mask_buf_def;
unsigned int *wake_buf;
unsigned int *type_buf;
unsigned int *type_buf_def;
unsigned int **virt_buf;
unsigned int **config_buf;
unsigned int irq_reg_stride;
unsigned int (*get_irq_reg)(struct regmap_irq_chip_data *data,
unsigned int base, int index);
unsigned int clear_status:1;
};
static inline const
struct regmap_irq *irq_to_regmap_irq(struct regmap_irq_chip_data *data,
int irq)
{
return &data->chip->irqs[irq];
}
static bool regmap_irq_can_bulk_read_status(struct regmap_irq_chip_data *data)
{
struct regmap *map = data->map;
/*
* While possible that a user-defined ->get_irq_reg() callback might
* be linear enough to support bulk reads, most of the time it won't.
* Therefore only allow them if the default callback is being used.
*/
return data->irq_reg_stride == 1 && map->reg_stride == 1 &&
data->get_irq_reg == regmap_irq_get_irq_reg_linear &&
!map->use_single_read;
}
static void regmap_irq_lock(struct irq_data *data)
{
struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
mutex_lock(&d->lock);
}
static void regmap_irq_sync_unlock(struct irq_data *data)
{
struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
struct regmap *map = d->map;
int i, j, ret;
u32 reg;
u32 val;
if (d->chip->runtime_pm) {
ret = pm_runtime_get_sync(map->dev);
if (ret < 0)
dev_err(map->dev, "IRQ sync failed to resume: %d\n",
ret);
}
if (d->clear_status) {
for (i = 0</