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sa11x0_sspreg.h revision 1.1 
      1 /*      $NetBSD: sa11x0_sspreg.h,v 1.1 2001/07/08 23:37:54 rjs Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001, The NetBSD Foundation, Inc.  All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by IWAMOTO Toshihiro.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed by the NetBSD
     20  *      Foundation, Inc. and its contributors.
     21  * 4. Neither the name of The NetBSD Foundation nor the names of its
     22  *    contributors may be used to endorse or promote products derived
     23  *    from this software without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  */
     38 
     39 /* SA11[01]0 integrated SSP (synchronous serial port) interface */
     40 
     41 #define SASSP_FREQ	(3686400 / 2)
     42 #define SASSPSPEED(b)	(SACOM_FREQ / (b) - 1)
     43 
     44 /* size of I/O space */
     45 #define SASSP_NPORTS	30
     46 
     47 #define SASSP_TXFIFOLEN		8
     48 #define SASSP_RXFIFOLEN		12
     49 
     50 /* SSP control register 0 */
     51 #define SASSP_CR0	0x60
     52 #define CR0_DSS_MASK	0x000F	/* Data size select */
     53 #define CR0_FRF_MASK	0x0030	/* Frame format */
     54 #define CR0_SSE		0x0080	/* SSP enable */
     55 #define CR0_SCR_MASK	0xFF00	/* Serial clock rate */
     56 
     57 /* SSP control register 1 */
     58 #define SASSP_CR1	0x64
     59 #define CR1_RIE		0x01	/* Receive FIFO interrupt enable */
     60 #define CR1_TIE		0x02	/* Transmit FIFO interrupt enable */
     61 #define CR1_LBM		0x04	/* Loopback mode */
     62 #define CR1_SPO		0x08	/* Serial clock polarity */
     63 #define CR1_SPH		0x10	/* Serial clock phase */
     64 #define CR1_ECS		0x20	/* External clock select */
     65 
     66 /* SSP data register */
     67 #define SASSP_DR	0x6C
     68 
     69 /* SSP status register */
     70 #define SASSP_SR	0x74
     71 #define SR_TNF		0x02	/* Transmit FIFO not full */
     72 #define SR_RNE		0x04	/* Receive FIFO not empty */
     73 #define SR_BSY		0x08	/* SSP busy flag */
     74 #define SR_TFS		0x10	/* Transmit FIFO service request */
     75 #define SR_RFS		0x20	/* Receive FIFO service request */
     76 #define SR_ROR		0x40	/* Receive FIFO overrrun */
     77