linux-imx

/*

 * Broadcom BCM63XX High Speed SPI Controller driver

 *

 * Copyright 2000-2010 Broadcom Corporation

 * Copyright 2012-2013 Jonas Gorski <jogo@openwrt.org>

 *

 * Licensed under the GNU/GPL. See COPYING for details.

 */

​

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/clk.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/delay.h>

#include <linux/dma-mapping.h>

#include <linux/err.h>

#include <linux/interrupt.h>

#include <linux/spi/spi.h>

#include <linux/mutex.h>

#include <linux/of.h>

​

#define HSSPI_GLOBAL_CTRL_REG           0x0

#define GLOBAL_CTRL_CS_POLARITY_SHIFT       0

#define GLOBAL_CTRL_CS_POLARITY_MASK        0x000000ff

#define GLOBAL_CTRL_PLL_CLK_CTRL_SHIFT      8

#define GLOBAL_CTRL_PLL_CLK_CTRL_MASK       0x0000ff00

#define GLOBAL_CTRL_CLK_GATE_SSOFF      BIT(16)

#define GLOBAL_CTRL_CLK_POLARITY        BIT(17)

#define GLOBAL_CTRL_MOSI_IDLE           BIT(18)

​

#define HSSPI_GLOBAL_EXT_TRIGGER_REG        0x4

​

#define HSSPI_INT_STATUS_REG            0x8

#define HSSPI_INT_STATUS_MASKED_REG     0xc

#define HSSPI_INT_MASK_REG          0x10

​

#define HSSPI_PINGx_CMD_DONE(i)         BIT((i * 8) + 0)

#define HSSPI_PINGx_RX_OVER(i)          BIT((i * 8) + 1)

#define HSSPI_PINGx_TX_UNDER(i)         BIT((i * 8) + 2)

#define HSSPI_PINGx_POLL_TIMEOUT(i)     BIT((i * 8) + 3)

#define HSSPI_PINGx_CTRL_INVAL(i)       BIT((i * 8) + 4)

​

#define HSSPI_INT_CLEAR_ALL         0xff001f1f

​

#define HSSPI_PINGPONG_COMMAND_REG(x)       (0x80 + (x) * 0x40)

#define PINGPONG_CMD_COMMAND_MASK       0xf

#define PINGPONG_COMMAND_NOOP           0

#define PINGPONG_COMMAND_START_NOW      1

#define PINGPONG_COMMAND_START_TRIGGER      2

#define PINGPONG_COMMAND_HALT           3

#define PINGPONG_COMMAND_FLUSH          4

#define PINGPONG_CMD_PROFILE_SHIFT      8

#define PINGPONG_CMD_SS_SHIFT           12

​

#define HSSPI_PINGPONG_STATUS_REG(x)        (0x84 + (x) * 0x40)

​

#define HSSPI_PROFILE_CLK_CTRL_REG(x)       (0x100 + (x) * 0x20)

#define CLK_CTRL_FREQ_CTRL_MASK         0x0000ffff

#define CLK_CTRL_SPI_CLK_2X_SEL         BIT(14)

#define CLK_CTRL_ACCUM_RST_ON_LOOP      BIT(15)

​