/* * Register definitions for Atmel Serial Peripheral Interface (SPI) * * Copyright (C) 2006 Atmel Corporation * * 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. */#ifndef __ATMEL_SPI_H__#define __ATMEL_SPI_H__/* SPI register offsets */#define SPI_CR					0x0000#define SPI_MR					0x0004#define SPI_RDR					0x0008#define SPI_TDR					0x000c#define SPI_SR					0x0010#define SPI_IER					0x0014#define SPI_IDR					0x0018#define SPI_IMR					0x001c#define SPI_CSR0				0x0030#define SPI_CSR1				0x0034#define SPI_CSR2				0x0038#define SPI_CSR3				0x003c#define SPI_RPR					0x0100#define SPI_RCR					0x0104#define SPI_TPR					0x0108#define SPI_TCR					0x010c#define SPI_RNPR				0x0110#define SPI_RNCR				0x0114#define SPI_TNPR				0x0118#define SPI_TNCR				0x011c#define SPI_PTCR				0x0120#define SPI_PTSR				0x0124/* Bitfields in CR */#define SPI_SPIEN_OFFSET			0#define SPI_SPIEN_SIZE				1#define SPI_SPIDIS_OFFSET			1#define SPI_SPIDIS_SIZE				1#define SPI_SWRST_OFFSET			7#define SPI_SWRST_SIZE				1#define SPI_LASTXFER_OFFSET			24#define SPI_LASTXFER_SIZE			1/* Bitfields in MR */#define SPI_MSTR_OFFSET				0#define SPI_MSTR_SIZE				1#define SPI_PS_OFFSET				1#define SPI_PS_SIZE				1#define SPI_PCSDEC_OFFSET			2#define SPI_PCSDEC_SIZE				1#define SPI_FDIV_OFFSET				3#define SPI_FDIV_SIZE				1#define SPI_MODFDIS_OFFSET			4#define SPI_MODFDIS_SIZE			1#define SPI_LLB_OFFSET				7#define SPI_LLB_SIZE				1#define SPI_PCS_OFFSET				16#define SPI_PCS_SIZE				4#define SPI_DLYBCS_OFFSET			24#define SPI_DLYBCS_SIZE				8/* Bitfields in RDR */#define SPI_RD_OFFSET				0#define SPI_RD_SIZE				16/* Bitfields in TDR */#define SPI_TD_OFFSET				0#define SPI_TD_SIZE				16/* Bitfields in SR */#define SPI_RDRF_OFFSET				0#define SPI_RDRF_SIZE				1#define SPI_TDRE_OFFSET				1#define SPI_TDRE_SIZE				1#define SPI_MODF_OFFSET				2#define SPI_MODF_SIZE				1#define SPI_OVRES_OFFSET			3#define SPI_OVRES_SIZE				1#define SPI_ENDRX_OFFSET			4#define SPI_ENDRX_SIZE				1#define SPI_ENDTX_OFFSET			5#define SPI_ENDTX_SIZE				1#define SPI_RXBUFF_OFFSET			6#define SPI_RXBUFF_SIZE				1#define SPI_TXBUFE_OFFSET			7#define SPI_TXBUFE_SIZE				1#define SPI_NSSR_OFFSET				8#define SPI_NSSR_SIZE				1#define SPI_TXEMPTY_OFFSET			9#define SPI_TXEMPTY_SIZE			1#define SPI_SPIENS_OFFSET			16#define SPI_SPIENS_SIZE				1/* Bitfields in CSR0 */#define SPI_CPOL_OFFSET				0#define SPI_CPOL_SIZE				1#define SPI_NCPHA_OFFSET			1#define SPI_NCPHA_SIZE				1#define SPI_CSAAT_OFFSET			3#define SPI_CSAAT_SIZE				1#define SPI_BITS_OFFSET				4#define SPI_BITS_SIZE				4#define SPI_SCBR_OFFSET				8#define SPI_SCBR_SIZE				8#define SPI_DLYBS_OFFSET			16#define SPI_DLYBS_SIZE				8#define SPI_DLYBCT_OFFSET			24#define SPI_DLYBCT_SIZE				8/* Bitfields in RCR */#define SPI_RXCTR_OFFSET			0#define SPI_RXCTR_SIZE				16/* Bitfields in TCR */#define SPI_TXCTR_OFFSET			0#define SPI_TXCTR_SIZE				16/* Bitfields in RNCR */#define SPI_RXNCR_OFFSET			0#define SPI_RXNCR_SIZE				16/* Bitfields in TNCR */#define SPI_TXNCR_OFFSET			0#define SPI_TXNCR_SIZE				16/* Bitfields in PTCR */#define SPI_RXTEN_OFFSET			0#define SPI_RXTEN_SIZE				1#define SPI_RXTDIS_OFFSET			1#define SPI_RXTDIS_SIZE				1#define SPI_TXTEN_OFFSET			8#define SPI_TXTEN_SIZE				1#define SPI_TXTDIS_OFFSET			9#define SPI_TXTDIS_SIZE				1/* Constants for BITS */#define SPI_BITS_8_BPT				0#define SPI_BITS_9_BPT				1#define SPI_BITS_10_BPT				2#define SPI_BITS_11_BPT				3#define SPI_BITS_12_BPT				4#define SPI_BITS_13_BPT				5#define SPI_BITS_14_BPT				6#define SPI_BITS_15_BPT				7#define SPI_BITS_16_BPT				8/* Bit manipulation macros */#define SPI_BIT(name) \	(1 << SPI_##name##_OFFSET)#define SPI_BF(name,value) \	(((value) & ((1 << SPI_##name##_SIZE) - 1)) << SPI_##name##_OFFSET)#define SPI_BFEXT(name,value) \	(((value) >> SPI_##name##_OFFSET) & ((1 << SPI_##name##_SIZE) - 1))#define SPI_BFINS(name,value,old) \	( ((old) & ~(((1 << SPI_##name##_SIZE) - 1) << SPI_##name##_OFFSET)) \	  | SPI_BF(name,value))/* Register access macros */#define spi_readl(port,reg) \	__raw_readl((port) + SPI_##reg)#define spi_writel(port,reg,value) \	__raw_writel((value), (port) + SPI_##reg)#endif /* __ATMEL_SPI_H__ */