/*      $OpenBSD: ti_iicreg.h,v 1.1 2013/11/24 15:00:22 rapha Exp $     */
/*      $NetBSD: ti_iicreg.h,v 1.1 2013/04/17 14:33:06 bouyer Exp $     */

/*
 * Copyright (c) 2013 Manuel Bouyer.  All rights reserved.
 *
 * 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 AUTHOR ``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 AUTHOR 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.
 */

/* register definitions for the i2c controller found in the
 * Texas Instrument AM335x SOC
 */

#ifndef _AM335XIICREG_H
#define _AM335XIICREG_H

#define AM335X_I2C_REVNB_LO             0x00
#define         I2C_REVNB_LO_RTL(x)             (((x) >> 11) & 0x01f)
#define         I2C_REVNB_LO_MAJOR(x)           (((x) >>  8) & 0x007)
#define         I2C_REVNB_LO_CUSTOM(x)          (((x) >>  6) & 0x003)
#define         I2C_REVNB_LO_MINOR(x)           (((x) >>  0) & 0x01f)
#define AM335X_I2C_REVNB_HI             0x04
#define         I2C_REVNB_HI_SCHEME(x)          (((x) >> 14) & 0x003)
#define         I2C_REVNB_HI_FUNC(x)            (((x) >>  0) & 0xfff)
#define AM335X_I2C_SYSC                 0x10
#define         I2C_SYSC_CLKACTIVITY_OCP        0x0010
#define         I2C_SYSC_CLKACTIVITY_SYSTEM     0x0020
#define         I2C_SYSC_IDLE_MASK              0x0018
#define         I2C_SYSC_IDLE_FORCE             0x0000
#define         I2C_SYSC_IDLE_SMART             0x0010
#define         I2C_SYSC_IDLE_NONE              0x0008
#define         I2C_SYSC_ENAWAKEUP              0x0004
#define         I2C_SYSC_SRST                   0x0002
#define         I2C_SYSC_AUTOIDLE               0x0001
#define AM335X_I2C_IRQSTATUS_RAW                0x24
#define AM335X_I2C_IRQSTATUS            0x28
#define AM335X_I2C_IRQENABLE_SET                0x2C
#define AM335X_I2C_IRQENABLE_CLR                0x30
#define AM335X_I2C_WE                   0x34
#define         I2C_IRQSTATUS_XDR               0x4000
#define         I2C_IRQSTATUS_RDR               0x2000
#define         I2C_IRQSTATUS_BB                0x1000
#define         I2C_IRQSTATUS_ROVR              0x0800
#define         I2C_IRQSTATUS_XUDF              0x0400
#define         I2C_IRQSTATUS_AAS               0x0200
#define         I2C_IRQSTATUS_BF                0x0100
#define         I2C_IRQSTATUS_AERR              0x0080
#define         I2C_IRQSTATUS_STC               0x0040
#define         I2C_IRQSTATUS_GC                0x0020
#define         I2C_IRQSTATUS_XRDY              0x0010
#define         I2C_IRQSTATUS_RRDY              0x0008
#define         I2C_IRQSTATUS_ARDY              0x0004
#define         I2C_IRQSTATUS_NACK              0x0002
#define         I2C_IRQSTATUS_AL                0x0001
#define AM335X_I2C_DMARXENABLE_SET      0x38
#define AM335X_I2C_DMATXENABLE_SET      0x3C
#define AM335X_I2C_DMARXENABLE_CLR      0x40
#define         I2C_DMARXENABLE                 0x0001
#define AM335X_I2C_DMATXENABLE_CLR      0x44
#define         I2C_DMATXENABLE                 0x0001
#define AM335X_I2C_DMARXWAKE_EN         0x48
        /* use same bits as IRQ */
#define AM335X_I2C_DMATXWAKE_EN         0x4C
        /* use same bits as IRQ */
#define AM335X_I2C_SYSS                 0x90
#define         I2C_SYSS_RDONE                  0x0001
#define AM335X_I2C_BUF                  0x94
#define         I2C_BUF_RDMA_EN                 0x8000
#define         I2C_BUF_RXFIFO_CLR              0x4000
#define         I2C_BUF_RXTRSH_MASK             0x3f00
#define         I2C_BUF_RXTRSH(x)               ((x) << 8)
#define         I2C_BUF_XDMA_EN                 0x0080
#define         I2C_BUF_TXFIFO_CLR              0x0040
#define         I2C_BUF_TXTRSH_MASK             0x003f
#define         I2C_BUF_TXTRSH(x)               ((x) << 0)
#define AM335X_I2C_CNT                  0x98
#define         I2C_CNT_MASK                    0xffff
#define AM335X_I2C_DATA                 0x9C
#define         I2C_DATA_MASK                   0x00ff
#define AM335X_I2C_CON                  0xA4
#define         I2C_CON_EN                      0x8000
#define         I2C_CON_STB                     0x0800
#define         I2C_CON_MST                     0x0400
#define         I2C_CON_TRX                     0x0200
#define         I2C_CON_XSA                     0x0100
#define         I2C_CON_XOA0                    0x0080
#define         I2C_CON_XOA1                    0x0040
#define         I2C_CON_XOA2                    0x0020
#define         I2C_CON_XOA3                    0x0010
#define         I2C_CON_STP                     0x0002
#define         I2C_CON_STT                     0x0001
#define AM335X_I2C_OA                   0xA8
#define         I2C_OA_MASK                     0x03ff
#define AM335X_I2C_SA                   0xAC
#define         I2C_SA_MASK                     0x03ff
#define AM335X_I2C_PSC                  0xB0
#define         I2C_PSC_MASK                    0x000f
#define AM335X_I2C_SCLL                 0xB4
#define         I2C_SCLL_MASK                   0x000f
#define AM335X_I2C_SCLH                 0xB8
#define         I2C_SCLH_MASK                   0x000f
#define AM335X_I2C_SYSTEST              0xBC
#define AM335X_I2C_BUFSTAT              0xC0
#define         I2C_BUFSTAT_FIFODEPTH(x)        (((x) >> 14) & 0x03)
#define         I2C_BUFSTAT_RXSTAT(x)           (((x) >>  8) & 0x3f)
#define         I2C_BUFSTAT_TXSTAT(x)           (((x) >>  0) & 0x3f)
#define AM335X_I2C_OA1                  0xC4
#define AM335X_I2C_OA2                  0xC8
#define AM335X_I2C_OA3                  0xCC
        /* same bits as I2C_OA */
#define AM335X_I2C_ACTOA                        0xD0
#define AM335X_I2C_SBLOCK               0xD4
#define         I2C_ACTOA_OA3_ACT               0x0008
#define         I2C_ACTOA_OA2_ACT               0x0004
#define         I2C_ACTOA_OA1_ACT               0x0002
#define         I2C_ACTOA_OA0_ACT               0x0001

#endif /* _AM335XIICREG_H */