linux-imx

/*

 * Copyright (C) 2012 - 2014 Allwinner Tech

 * Pan Nan <pannan@allwinnertech.com>

 *

 * Copyright (C) 2014 Maxime Ripard

 * Maxime Ripard <maxime.ripard@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 as

 * published by the Free Software Foundation; either version 2 of

 * the License, or (at your option) any later version.

 */

​

#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/device.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

​

#include <linux/spi/spi.h>

​

#define SUN4I_FIFO_DEPTH        64

​

#define SUN4I_RXDATA_REG        0x00

​

#define SUN4I_TXDATA_REG        0x04

​

#define SUN4I_CTL_REG           0x08

#define SUN4I_CTL_ENABLE            BIT(0)

#define SUN4I_CTL_MASTER            BIT(1)

#define SUN4I_CTL_CPHA              BIT(2)

#define SUN4I_CTL_CPOL              BIT(3)

#define SUN4I_CTL_CS_ACTIVE_LOW         BIT(4)

#define SUN4I_CTL_LMTF              BIT(6)

#define SUN4I_CTL_TF_RST            BIT(8)

#define SUN4I_CTL_RF_RST            BIT(9)

#define SUN4I_CTL_XCH               BIT(10)

#define SUN4I_CTL_CS_MASK           0x3000

#define SUN4I_CTL_CS(cs)            (((cs) << 12) & SUN4I_CTL_CS_MASK)

#define SUN4I_CTL_DHB               BIT(15)

#define SUN4I_CTL_CS_MANUAL         BIT(16)

#define SUN4I_CTL_CS_LEVEL          BIT(17)

#define SUN4I_CTL_TP                BIT(18)

​

#define SUN4I_INT_CTL_REG       0x0c

#define SUN4I_INT_CTL_RF_F34            BIT(4)

#define SUN4I_INT_CTL_TF_E34            BIT(12)

#define SUN4I_INT_CTL_TC            BIT(16)

​

#define SUN4I_INT_STA_REG       0x10

​

#define SUN4I_DMA_CTL_REG       0x14

​

#define SUN4I_WAIT_REG          0x18

​

#define SUN4I_CLK_CTL_REG       0x1c

#define SUN4I_CLK_CTL_CDR2_MASK         0xff

#define SUN4I_CLK_CTL_CDR2(div)         ((div) & SUN4I_CLK_CTL_CDR2_MASK)

#define SUN4I_CLK_CTL_CDR1_MASK         0xf

#define SUN4I_CLK_CTL_CDR1(div)         (((div) & SUN4I_CLK_CTL_CDR1_MASK) << 8)