linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2018 Spreadtrum Communications Inc.

 * Copyright (C) 2018 Linaro Ltd.

 */

​

#include <linux/bitops.h>

#include <linux/gpio/driver.h>

#include <linux/interrupt.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/platform_device.h>

#include <linux/spinlock.h>

​

/* EIC registers definition */

#define SPRD_EIC_DBNC_DATA      0x0

#define SPRD_EIC_DBNC_DMSK      0x4

#define SPRD_EIC_DBNC_IEV       0x14

#define SPRD_EIC_DBNC_IE        0x18

#define SPRD_EIC_DBNC_RIS       0x1c

#define SPRD_EIC_DBNC_MIS       0x20

#define SPRD_EIC_DBNC_IC        0x24

#define SPRD_EIC_DBNC_TRIG      0x28

#define SPRD_EIC_DBNC_CTRL0     0x40

​

#define SPRD_EIC_LATCH_INTEN        0x0

#define SPRD_EIC_LATCH_INTRAW       0x4

#define SPRD_EIC_LATCH_INTMSK       0x8

#define SPRD_EIC_LATCH_INTCLR       0xc

#define SPRD_EIC_LATCH_INTPOL       0x10

#define SPRD_EIC_LATCH_INTMODE      0x14

​

#define SPRD_EIC_ASYNC_INTIE        0x0

#define SPRD_EIC_ASYNC_INTRAW       0x4

#define SPRD_EIC_ASYNC_INTMSK       0x8

#define SPRD_EIC_ASYNC_INTCLR       0xc

#define SPRD_EIC_ASYNC_INTMODE      0x10

#define SPRD_EIC_ASYNC_INTBOTH      0x14

#define SPRD_EIC_ASYNC_INTPOL       0x18

#define SPRD_EIC_ASYNC_DATA     0x1c

​

#define SPRD_EIC_SYNC_INTIE     0x0

#define SPRD_EIC_SYNC_INTRAW        0x4

#define SPRD_EIC_SYNC_INTMSK        0x8

#define SPRD_EIC_SYNC_INTCLR        0xc

#define SPRD_EIC_SYNC_INTMODE       0x10

#define SPRD_EIC_SYNC_INTBOTH       0x14

#define SPRD_EIC_SYNC_INTPOL        0x18

#define SPRD_EIC_SYNC_DATA      0x1c

​

/*

 * The digital-chip EIC controller can support maximum 3 banks, and each bank

 * contains 8 EICs.

 */

#define SPRD_EIC_MAX_BANK       3

#define SPRD_EIC_PER_BANK_NR        8

#define SPRD_EIC_DATA_MASK      GENMASK(7, 0)

#define SPRD_EIC_BIT(x)         ((x) & (SPRD_EIC_PER_BANK_NR - 1))

#define SPRD_EIC_DBNC_MASK      GENMASK(11, 0)

​

/*

 * The Spreadtrum EIC (external interrupt controller) can be used only in