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/*
* Blackfin On-Chip SPI Driver
*
* Copyright 2004-2008 Analog Devices Inc.
*
* Enter bugs at http://blackfin.uclinux.org/
*
* Licensed under the GPL-2 or later.
*/
#ifndef _SPI_CHANNEL_H_
#define _SPI_CHANNEL_H_
#define MIN_SPI_BAUD_VAL 2
#define SPI_READ 0
#define SPI_WRITE 1
#define SPI_CTRL_OFF 0x0
#define SPI_FLAG_OFF 0x4
#define SPI_STAT_OFF 0x8
#define SPI_TXBUFF_OFF 0xc
#define SPI_RXBUFF_OFF 0x10
#define SPI_BAUD_OFF 0x14
#define SPI_SHAW_OFF 0x18
#define BIT_CTL_ENABLE 0x4000
#define BIT_CTL_OPENDRAIN 0x2000
#define BIT_CTL_MASTER 0x1000
#define BIT_CTL_POLAR 0x0800
#define BIT_CTL_PHASE 0x0400
#define BIT_CTL_BITORDER 0x0200
#define BIT_CTL_WORDSIZE 0x0100
#define BIT_CTL_MISOENABLE 0x0020
#define BIT_CTL_RXMOD 0x0000
#define BIT_CTL_TXMOD 0x0001
#define BIT_CTL_TIMOD_DMA_TX 0x0003
#define BIT_CTL_TIMOD_DMA_RX 0x0002
#define BIT_CTL_SENDOPT 0x0004
#define BIT_CTL_TIMOD 0x0003
#define BIT_STAT_SPIF 0x0001
#define BIT_STAT_MODF 0x0002
#define BIT_STAT_TXE 0x0004
#define BIT_STAT_TXS 0x0008
#define BIT_STAT_RBSY 0x0010
#define BIT_STAT_RXS 0x0020
#define BIT_STAT_TXCOL 0x0040
#define BIT_STAT_CLR 0xFFFF
#define BIT_STU_SENDOVER 0x0001
#define BIT_STU_RECVFULL 0x0020
#define CFG_SPI_ENABLE 1
#define CFG_SPI_DISABLE 0
#define CFG_SPI_OUTENABLE 1
#define CFG_SPI_OUTDISABLE 0
#define CFG_SPI_ACTLOW 1
#define CFG_SPI_ACTHIGH 0
#define CFG_SPI_PHASESTART 1
#define CFG_SPI_PHASEMID 0
#define CFG_SPI_MASTER 1
#define CFG_SPI_SLAVE 0
#define CFG_SPI_SENELAST 0
#define CFG_SPI_SENDZERO 1
#define CFG_SPI_RCVFLUSH 1
#define CFG_SPI_RCVDISCARD 0
#define CFG_SPI_LSBFIRST 1
#define CFG_SPI_MSBFIRST 0
#define CFG_SPI_WORDSIZE16 1
#define CFG_SPI_WORDSIZE8 0
#define CFG_SPI_MISOENABLE 1
#define CFG_SPI_MISODISABLE 0
#define CFG_SPI_READ 0x00
#define CFG_SPI_WRITE 0x01
#define CFG_SPI_DMAREAD 0x02
#define CFG_SPI_DMAWRITE 0x03
#define CFG_SPI_CSCLEARALL 0
#define CFG_SPI_CHIPSEL1 1
#define CFG_SPI_CHIPSEL2 2
#define CFG_SPI_CHIPSEL3 3
#define CFG_SPI_CHIPSEL4 4
#define CFG_SPI_CHIPSEL5 5
#define CFG_SPI_CHIPSEL6 6
#define CFG_SPI_CHIPSEL7 7
#define CFG_SPI_CS1VALUE 1
#define CFG_SPI_CS2VALUE 2
#define CFG_SPI_CS3VALUE 3
#define CFG_SPI_CS4VALUE 4
#define CFG_SPI_CS5VALUE 5
#define CFG_SPI_CS6VALUE 6
#define CFG_SPI_CS7VALUE 7
#define CMD_SPI_SET_BAUDRATE 2
#define CMD_SPI_GET_SYSTEMCLOCK 25
#define CMD_SPI_SET_WRITECONTINUOUS 26
/* device.platform_data for SSP controller devices */
struct bfin5xx_spi_master {
u16 num_chipselect;
u8 enable_dma;
u16 pin_req[7];
};
/* spi_board_info.controller_data for SPI slave devices,
* copied to spi_device.platform_data ... mostly for dma tuning
*/
struct bfin5xx_spi_chip {
u16 ctl_reg;
u8 enable_dma;
u8 bits_per_word;
u8 cs_change_per_word;
u16 cs_chg_udelay; /* Some devices require 16-bit delays */
u32 cs_gpio;
/* Value to send if no TX value is supplied, usually 0x0 or 0xFFFF */
u16 idle_tx_val;
};
#endif /* _SPI_CHANNEL_H_ */
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