drivers/serial/atmel_usart.h

/*
 * Register definitions for the Atmel USART3 module.
 *
 * Copyright (C) 2005-2006 Atmel Corporation
 *
 * Modified to support C structure SoC access by
 * Andreas Bießmann <biessmann@corscience.de>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef __DRIVERS_ATMEL_USART_H__
#define __DRIVERS_ATMEL_USART_H__

/* USART3 register footprint */
typedef struct atmel_usart3 {
	u32	cr;
	u32	mr;
	u32	ier;
	u32	idr;
	u32	imr;
	u32	csr;
	u32	rhr;
	u32	thr;
	u32	brgr;
	u32	rtor;
	u32	ttgr;
	u32	reserved0[5];
	u32	fidi;
	u32	ner;
	u32	reserved1;
	u32	ifr;
	u32	man;
	u32	reserved2[54]; // version and PDC not needed
} atmel_usart3_t;

/* Bitfields in CR */
#define USART3_RSTRX_OFFSET			2
#define USART3_RSTRX_SIZE			1
#define USART3_RSTTX_OFFSET			3
#define USART3_RSTTX_SIZE			1
#define USART3_RXEN_OFFSET			4
#define USART3_RXEN_SIZE			1
#define USART3_RXDIS_OFFSET			5
#define USART3_RXDIS_SIZE			1
#define USART3_TXEN_OFFSET			6
#define USART3_TXEN_SIZE			1
#define USART3_TXDIS_OFFSET			7
#define USART3_TXDIS_SIZE			1
#define USART3_RSTSTA_OFFSET			8
#define USART3_RSTSTA_SIZE			1
#define USART3_STTBRK_OFFSET			9
#define USART3_STTBRK_SIZE			1
#define USART3_STPBRK_OFFSET			10
#define USART3_STPBRK_SIZE			1
#define USART3_STTTO_OFFSET			11
#define USART3_STTTO_SIZE			1
#define USART3_SENDA_OFFSET			12
#define USART3_SENDA_SIZE			1
#define USART3_RSTIT_OFFSET			13
#define USART3_RSTIT_SIZE			1
#define USART3_RSTNACK_OFFSET			14
#define USART3_RSTNACK_SIZE			1
#define USART3_RETTO_OFFSET			15
#define USART3_RETTO_SIZE			1
#define USART3_DTREN_OFFSET			16
#define USART3_DTREN_SIZE			1
#define USART3_DTRDIS_OFFSET			17
#define USART3_DTRDIS_SIZE			1
#define USART3_RTSEN_OFFSET			18
#define USART3_RTSEN_SIZE			1
#define USART3_RTSDIS_OFFSET			19
#define USART3_RTSDIS_SIZE			1
#define USART3_COMM_TX_OFFSET			30
#define USART3_COMM_TX_SIZE			1
#define USART3_COMM_RX_OFFSET			31
#define USART3_COMM_RX_SIZE			1

/* Bitfields in MR */
#define USART3_USART_MODE_OFFSET		0
#define USART3_USART_MODE_SIZE			4
#define USART3_USCLKS_OFFSET			4
#define USART3_USCLKS_SIZE			2
#define USART3_CHRL_OFFSET			6
#define USART3_CHRL_SIZE			2
#define USART3_SYNC_OFFSET			8
#define USART3_SYNC_SIZE			1
#define USART3_PAR_OFFSET			9
#define USART3_PAR_SIZE				3
#define USART3_NBSTOP_OFFSET			12
#define USART3_NBSTOP_SIZE			2
#define USART3_CHMODE_OFFSET			14
#define USART3_CHMODE_SIZE			2
#define USART3_MSBF_OFFSET			16
#define USART3_MSBF_SIZE			1
#define USART3_MODE9_OFFSET			17
#define USART3_MODE9_SIZE			1
#define USART3_CLKO_OFFSET			18
#define USART3_CLKO_SIZE			1
#define USART3_OVER_OFFSET			19
#define USART3_OVER_SIZE			1
#define USART3_INACK_OFFSET			20
#define USART3_INACK_SIZE			1
#define USART3_DSNACK_OFFSET			21
#define USART3_DSNACK_SIZE			1
#define USART3_MAX_ITERATION_OFFSET		24
#define USART3_MAX_ITERATION_SIZE		3
#define USART3_FILTER_OFFSET			28
#define USART3_FILTER_SIZE			1

/* Bitfields in CSR */
#define USART3_RXRDY_OFFSET			0
#define USART3_RXRDY_SIZE			1
#define USART3_TXRDY_OFFSET			1
#define USART3_TXRDY_SIZE			1
#define USART3_RXBRK_OFFSET			2
#define USART3_RXBRK_SIZE			1
#define USART3_ENDRX_OFFSET			3
#define USART3_ENDRX_SIZE			1
#define USART3_ENDTX_OFFSET			4
#define USART3_ENDTX_SIZE			1
#define USART3_OVRE_OFFSET			5
#define USART3_OVRE_SIZE			1
#define USART3_FRAME_OFFSET			6
#define USART3_FRAME_SIZE			1
#define USART3_PARE_OFFSET			7
#define USART3_PARE_SIZE			1
#define USART3_TIMEOUT_OFFSET			8
#define USART3_TIMEOUT_SIZE			1
#define USART3_TXEMPTY_OFFSET			9
#define USART3_TXEMPTY_SIZE			1
#define USART3_ITERATION_OFFSET			10
#define USART3_ITERATION_SIZE			1
#define USART3_TXBUFE_OFFSET			11
#define USART3_TXBUFE_SIZE			1
#define USART3_RXBUFF_OFFSET			12
#define USART3_RXBUFF_SIZE			1
#define USART3_NACK_OFFSET			13
#define USART3_NACK_SIZE			1
#define USART3_RIIC_OFFSET			16
#define USART3_RIIC_SIZE			1
#define USART3_DSRIC_OFFSET			17
#define USART3_DSRIC_SIZE			1
#define USART3_DCDIC_OFFSET			18
#define USART3_DCDIC_SIZE			1
#define USART3_CTSIC_OFFSET			19
#define USART3_CTSIC_SIZE			1
#define USART3_RI_OFFSET			20
#define USART3_RI_SIZE				1
#define USART3_DSR_OFFSET			21
#define USART3_DSR_SIZE				1
#define USART3_DCD_OFFSET			22
#define USART3_DCD_SIZE				1
#define USART3_CTS_OFFSET			23
#define USART3_CTS_SIZE				1

/* Bitfields in RHR */
#define USART3_RXCHR_OFFSET			0
#define USART3_RXCHR_SIZE			9

/* Bitfields in THR */
#define USART3_TXCHR_OFFSET			0
#define USART3_TXCHR_SIZE			9

/* Bitfields in BRGR */
#define USART3_CD_OFFSET			0
#define USART3_CD_SIZE				16

/* Bitfields in RTOR */
#define USART3_TO_OFFSET			0
#define USART3_TO_SIZE				16

/* Bitfields in TTGR */
#define USART3_TG_OFFSET			0
#define USART3_TG_SIZE				8

/* Bitfields in FIDI */
#define USART3_FI_DI_RATIO_OFFSET		0
#define USART3_FI_DI_RATIO_SIZE			11

/* Bitfields in NER */
#define USART3_NB_ERRORS_OFFSET			0
#define USART3_NB_ERRORS_SIZE			8

/* Bitfields in XXR */
#define USART3_XOFF_OFFSET			0
#define USART3_XOFF_SIZE			8
#define USART3_XON_OFFSET			8
#define USART3_XON_SIZE				8

/* Bitfields in IFR */
#define USART3_IRDA_FILTER_OFFSET		0
#define USART3_IRDA_FILTER_SIZE			8

/* Bitfields in RCR */
#define USART3_RXCTR_OFFSET			0
#define USART3_RXCTR_SIZE			16

/* Bitfields in TCR */
#define USART3_TXCTR_OFFSET			0
#define USART3_TXCTR_SIZE			16

/* Bitfields in RNCR */
#define USART3_RXNCR_OFFSET			0
#define USART3_RXNCR_SIZE			16

/* Bitfields in TNCR */
#define USART3_TXNCR_OFFSET			0
#define USART3_TXNCR_SIZE			16

/* Bitfields in PTCR */
#define USART3_RXTEN_OFFSET			0
#define USART3_RXTEN_SIZE			1
#define USART3_RXTDIS_OFFSET			1
#define USART3_RXTDIS_SIZE			1
#define USART3_TXTEN_OFFSET			8
#define USART3_TXTEN_SIZE			1
#define USART3_TXTDIS_OFFSET			9
#define USART3_TXTDIS_SIZE			1

/* Constants for USART_MODE */
#define USART3_USART_MODE_NORMAL		0
#define USART3_USART_MODE_RS485			1
#define USART3_USART_MODE_HARDWARE		2
#define USART3_USART_MODE_MODEM			3
#define USART3_USART_MODE_ISO7816_T0		4
#define USART3_USART_MODE_ISO7816_T1		6
#define USART3_USART_MODE_IRDA			8

/* Constants for USCLKS */
#define USART3_USCLKS_MCK			0
#define USART3_USCLKS_MCK_DIV			1
#define USART3_USCLKS_SCK			3

/* Constants for CHRL */
#define USART3_CHRL_5				0
#define USART3_CHRL_6				1
#define USART3_CHRL_7				2
#define USART3_CHRL_8				3

/* Constants for PAR */
#define USART3_PAR_EVEN				0
#define USART3_PAR_ODD				1
#define USART3_PAR_SPACE			2
#define USART3_PAR_MARK				3
#define USART3_PAR_NONE				4
#define USART3_PAR_MULTI			6

/* Constants for NBSTOP */
#define USART3_NBSTOP_1				0
#define USART3_NBSTOP_1_5			1
#define USART3_NBSTOP_2				2

/* Constants for CHMODE */
#define USART3_CHMODE_NORMAL			0
#define USART3_CHMODE_ECHO			1
#define USART3_CHMODE_LOCAL_LOOP		2
#define USART3_CHMODE_REMOTE_LOOP		3

/* Constants for MSBF */
#define USART3_MSBF_LSBF			0
#define USART3_MSBF_MSBF			1

/* Constants for OVER */
#define USART3_OVER_X16				0
#define USART3_OVER_X8				1

/* Constants for CD */
#define USART3_CD_DISABLE			0
#define USART3_CD_BYPASS			1

/* Constants for TO */
#define USART3_TO_DISABLE			0

/* Constants for TG */
#define USART3_TG_DISABLE			0

/* Constants for FI_DI_RATIO */
#define USART3_FI_DI_RATIO_DISABLE		0

/* Bit manipulation macros */
#define USART3_BIT(name)				\
	(1 << USART3_##name##_OFFSET)
#define USART3_BF(name,value)				\
	(((value) & ((1 << USART3_##name##_SIZE) - 1))	\
	 << USART3_##name##_OFFSET)
#define USART3_BFEXT(name,value)			\
	(((value) >> USART3_##name##_OFFSET)		\
	 & ((1 << USART3_##name##_SIZE) - 1))
#define USART3_BFINS(name,value,old)			\
	(((old) & ~(((1 << USART3_##name##_SIZE) - 1)	\
		    << USART3_##name##_OFFSET))		\
	 | USART3_BF(name,value))

#endif /* __DRIVERS_ATMEL_USART_H__ */