/* $NetBSD: sunxi_can.h,v 1.1 2018/03/07 20:55:31 bouyer Exp $ */
/*-
* Copyright (c) 2017,2018 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Manuel Bouyer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/* CAN mode select register */
#define SUNXI_CAN_MODSEL_REG 0x00
#define SUNXI_CAN_MODSEL_SLEEP __BIT(4)
#define SUNXI_CAN_MODSEL_ACP_FLT_MOD __BIT(3)
#define SUNXI_CAN_MODSEL_LB_MOD __BIT(2)
#define SUNXI_CAN_MODSEL_LST_ONLY __BIT(1)
#define SUNXI_CAN_MODSEL_RST __BIT(0)
/* CAN command register */
#define SUNXI_CAN_CMD_REG 0x04
#define SUNXI_CAN_CMD_BUS_OFF __BIT(5)
#define SUNXI_CAN_CMD_SELF_REQ __BIT(4)
#define SUNXI_CAN_CMD_CLR_OR __BIT(3)
#define SUNXI_CAN_CMD_REL_RX_BUF __BIT(2)
#define SUNXI_CAN_CMD_ABT_REQ __BIT(1)
#define SUNXI_CAN_CMD_TANS_REQ __BIT(0)
/* CAN status register */
#define SUNXI_CAN_STA_REG 0x08
#define SUNXI_CAN_STA_ERR_CODE __BITS(23,22)
#define SUNXI_CAN_STA_ERR_CODE_BIT 0
#define SUNXI_CAN_STA_ERR_CODE_FORM 1
#define SUNXI_CAN_STA_ERR_CODE_STUFF 2
#define SUNXI_CAN_STA_ERR_CODE_OTHER 3
#define SUNXI_CAN_STA_ERR_DIR _BIT(21)
#define SUNXI_CAN_STA_ERR_SEG_CODE __BITS(20,16)
#define SUNXI_CAN_STA_ARB_LOST __BITS(12,8)
#define SUNXI_CAN_STA_BUS __BIT(7)
#define SUNXI_CAN_STA_ERR __BIT(6)
#define SUNXI_CAN_STA_TX __BIT(5)
#define SUNXI_CAN_STA_RX __BIT(4)
#define SUNXI_CAN_STA_TX_OVER __BIT(3)
#define SUNXI_CAN_STA_TX_RDY __BIT(2)
#define SUNXI_CAN_STA_DATA_OR __BIT(1)
#define SUNXI_CAN_STA_RX_RDY __BIT(0)
/* CAN interrupt register */
#define SUNXI_CAN_INT_REG 0x0c
#define SUNXI_CAN_INT_BERR __BIT(7)
#define SUNXI_CAN_INT_ARB_LOST __BIT(6)
#define SUNXI_CAN_INT_ERR_PASSIVE __BIT(5)
#define SUNXI_CAN_INT_WAKEUP __BIT(4)
#define SUNXI_CAN_INT_DATA_OR __BIT(3)
#define SUNXI_CAN_INT_ERR __BIT(2)
#define SUNXI_CAN_INT_TX_FLAG __BIT(1)
#define SUNXI_CAN_INT_RX_FLAG __BIT(0)
/* CAN interrupt enable register */
#define SUNXI_CAN_INTE_REG 0x10
/* CAN bus timing register */
#define SUNXI_CAN_BUS_TIME_REG 0x14
#define SUNXI_CAN_BUS_TIME_SAM __BIT(23)
#define SUNXI_CAN_BUS_TIME_PHSEG2 __BITS(22,20)
#define SUNXI_CAN_BUS_TIME_PHSEG1 __BITS(19,16)
#define SUNXI_CAN_BUS_TIME_SJW __BITS(15,14)
#define SUNXI_CAN_BUS_TIME_TQ_BRP __BITS(9,0)
/* CAN tx error warning limit register */
#define SUNXI_CAN_EWL_REG 0x18
#define SUNXI_CAN_EWL_ERR_WRN_LMT __BITS(7,0)
/* CAN error counter register */
#define SUNXI_CAN_REC_REG 0x1c
#define SUNXI_CAN_REC_RX_ERR_CNT __BITS(23,16)
#define SUNXI_CAN_REC_TX_ERR_CNT __BITS(7,0)
/* CAN receive message register */
#define SUNXI_CAN_RMSGC_REG 0x20
#define SUNXI_CAN_RMSGC_RX_MSG_CNT __BITS(7,0)
/* CAN receive buffer start address register */
#define SUNXI_CAN_RSADDR_REG 0x24
#define SUNXI_CAN_RSADDR_RX_BUF_SADDR __BITS(5,0)
/* CAN rx/tx message buffer 0 register */
#define SUNXI_CAN_TXBUF0_REG 0x40
#define SUNXI_CAN_TXBUF0_EFF __BIT(7)
#define SUNXI_CAN_TXBUF0_RTR __BIT(6)
#define SUNXI_CAN_TXBUF0_DL __BITS(3,0)
/* CAN rx/tx message buffer registers */
#define SUNXI_CAN_TXBUF1_REG 0x44
#define SUNXI_CAN_TXBUF2_REG 0x48
#define SUNXI_CAN_TXBUF3_REG 0x4c
#define SUNXI_CAN_TXBUF4_REG 0x50
#define SUNXI_CAN_TXBUF5_REG 0x54
#define SUNXI_CAN_TXBUF6_REG 0x58
#define SUNXI_CAN_TXBUF7_REG 0x5c
#define SUNXI_CAN_TXBUF8_REG 0x60
#define SUNXI_CAN_TXBUF9_REG 0x64
#define SUNXI_CAN_TXBUF10_REG 0x68
#define SUNXI_CAN_TXBUF11_REG 0x6c
#define SUNXI_CAN_TXBUF12_REG 0x70
/* CAN acceptance code 0 register */
#define SUNXI_CAN_ACPC 0x40
/* CAN acceptance mask 0 register */
#define SUNXI_CAN_ACPM 0x44
/* CAN transmit buffer for read back registers */
#define SUNXI_CAN_RBUF_RBACK0 0x180
#define SUNXI_CAN_RBUF_RBACK1 0x184
#define SUNXI_CAN_RBUF_RBACK2 0x188
#define SUNXI_CAN_RBUF_RBACK3 0x18c
#define SUNXI_CAN_RBUF_RBACK4 0x190
#define SUNXI_CAN_RBUF_RBACK5 0x194
#define SUNXI_CAN_RBUF_RBACK6 0x198
#define SUNXI_CAN_RBUF_RBACK7 0x19c
#define SUNXI_CAN_RBUF_RBACK8 0x1a0
#define SUNXI_CAN_RBUF_RBACK9 0x1a4
#define SUNXI_CAN_RBUF_RBACK10 0x1a8
#define SUNXI_CAN_RBUF_RBACK11 0x1ac
#define SUNXI_CAN_RBUF_RBACK12 0x1b0