linux-imx

/*

 * IMG SPFI controller driver

 *

 * Copyright (C) 2007,2008,2013 Imagination Technologies Ltd.

 * Copyright (C) 2014 Google, Inc.

 *

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

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 */

​

#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/dmaengine.h>

#include <linux/gpio.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

#include <linux/scatterlist.h>

#include <linux/slab.h>

#include <linux/spi/spi.h>

#include <linux/spinlock.h>

​

#define SPFI_DEVICE_PARAMETER(x)        (0x00 + 0x4 * (x))

#define SPFI_DEVICE_PARAMETER_BITCLK_SHIFT  24

#define SPFI_DEVICE_PARAMETER_BITCLK_MASK   0xff

#define SPFI_DEVICE_PARAMETER_CSSETUP_SHIFT 16

#define SPFI_DEVICE_PARAMETER_CSSETUP_MASK  0xff

#define SPFI_DEVICE_PARAMETER_CSHOLD_SHIFT  8

#define SPFI_DEVICE_PARAMETER_CSHOLD_MASK   0xff

#define SPFI_DEVICE_PARAMETER_CSDELAY_SHIFT 0

#define SPFI_DEVICE_PARAMETER_CSDELAY_MASK  0xff

​

#define SPFI_CONTROL                0x14

#define SPFI_CONTROL_CONTINUE           BIT(12)

#define SPFI_CONTROL_SOFT_RESET         BIT(11)

#define SPFI_CONTROL_SEND_DMA           BIT(10)

#define SPFI_CONTROL_GET_DMA            BIT(9)

#define SPFI_CONTROL_SE         BIT(8)

#define SPFI_CONTROL_TMODE_SHIFT        5

#define SPFI_CONTROL_TMODE_MASK         0x7

#define SPFI_CONTROL_TMODE_SINGLE       0

#define SPFI_CONTROL_TMODE_DUAL         1

#define SPFI_CONTROL_TMODE_QUAD         2

#define SPFI_CONTROL_SPFI_EN            BIT(0)

​

#define SPFI_TRANSACTION            0x18

#define SPFI_TRANSACTION_TSIZE_SHIFT        16

#define SPFI_TRANSACTION_TSIZE_MASK     0xffff

​

#define SPFI_PORT_STATE             0x1c

#define SPFI_PORT_STATE_DEV_SEL_SHIFT       20

#define SPFI_PORT_STATE_DEV_SEL_MASK        0x7

#define SPFI_PORT_STATE_CK_POL(x)       BIT(19 - (x))

#define SPFI_PORT_STATE_CK_PHASE(x)     BIT(14 - (x))

​

#define SPFI_TX_32BIT_VALID_DATA        0x20

#define SPFI_TX_8BIT_VALID_DATA         0x24

#define SPFI_RX_32BIT_VALID_DATA        0x28