/*
* Driver for Broadcom BRCMSTB, NSP, NS2, Cygnus SPI Controllers
*
* Copyright 2016 Broadcom
*
* 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 (the "GPL").
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 (GPLv2) for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 (GPLv2) along with this source code.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi-mem.h>
#include <linux/sysfs.h>
#include <linux/types.h>
#include "spi-bcm-qspi.h"
#define DRIVER_NAME "bcm_qspi"
/* BSPI register offsets */
#define BSPI_REVISION_ID 0x000
#define BSPI_SCRATCH 0x004
#define BSPI_MAST_N_BOOT_CTRL 0x008
#define BSPI_BUSY_STATUS 0x00c
#define BSPI_INTR_STATUS 0x010
#define BSPI_B0_STATUS 0x014
#define BSPI_B0_CTRL 0x018
#define BSPI_B1_STATUS 0x01c
#define BSPI_B1_CTRL 0x020
#define BSPI_STRAP_OVERRIDE_CTRL 0x024
#define BSPI_FLEX_MODE_ENABLE 0x028
#define BSPI_BITS_PER_CYCLE 0x02c
#define BSPI_BITS_PER_PHASE 0x030
#define BSPI_CMD_AND_MODE_BYTE 0x034
#define BSPI_BSPI_FLASH_UPPER_ADDR_BYTE 0x038
#define BSPI_BSPI_XOR_VALUE 0x03c
#define BSPI_BSPI_XOR_ENABLE 0x040
#define BSPI_BSPI_PIO_MODE_ENABLE 0x044
#define BSPI_BSPI_PIO_IODIR 0x048
#define BSPI_BSPI_PIO_DATA 0x04c
/* RAF register offsets */
#define BSPI_RAF_START_ADDR 0x100
#define BSPI_RAF_NUM_WORDS 0x104
#define BSPI_RAF_CTRL 0x108
#define BSPI_RAF_FULLNESS 0x10c
#define BSPI_RAF_WATERMARK 0x110
#define BSPI_RAF_STATUS 0x114
#define BSPI_RAF_READ_DATA 0x118
#define BSPI_RAF_WORD_CNT 0x11c
#define BSPI_RAF_CURR_ADDR 0x120
/* Override mode masks */
#define BSPI_STRAP_OVERRIDE_CTRL_OVERRIDE BIT(0)
#define BSPI_STRAP_OVERRIDE_CTRL_DATA_DUAL BIT(1)
#define BSPI_STRAP_OVERRIDE_CTRL_ADDR_4BYTE BIT(2)
#define BSPI_STRAP_OVERRIDE_CTRL_DATA_QUAD BIT(3)
#define BSPI_STRAP_OVERRIDE_CTRL_ENDAIN_MODE BIT(4)
#define BSPI_ADDRLEN_3BYTES 3
#define BSPI_ADDRLEN_4BYTES 4
#define BSPI_RAF_STATUS_FIFO_EMPTY_MASK BIT(1)
#define BSPI_RAF_CTRL_START_MASK BIT(0)
#define BSPI_RAF_CTRL_CLEAR_MASK BIT(1)
#define BSPI_BPP_MODE_SELECT_MASK BIT(8)
#define BSPI_BPP_ADDR_SELECT_MASK BIT(16)
#define BSPI_READ_LENGTH 256
/* MSPI register offsets */
#define MSPI_SPCR0_LSB 0x000
#define MSPI_SPCR0_MSB 0x004
