xref: /src/sys/arch/arm/ti/ti_iicreg.h

/*	$NetBSD: ti_iicreg.h,v 1.1 2019/10/27 19:11:07 jmcneill 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 _OMAP2IICREG_H
#define _OMAP2IICREG_H

#define OMAP2_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		I2C_REV_SCHEME_0_MAJOR(r)	(((r) >> 4) && 0xf)
#define		I2C_REV_SCHEME_0_MINOR(r)	(((r) >> 0) && 0xf)
#define OMAP2_I2C_REVNB_HI		0x04
#define		I2C_REVNB_HI_SCHEME(x)		(((x) >> 14) & 0x003)
#define		I2C_REVNB_HI_FUNC(x)		(((x) >>  0) & 0xfff)
#define OMAP2_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 OMAP2_I2C_IRQSTATUS_RAW		0x24
#define OMAP2_I2C_IRQSTATUS		0x28
#define OMAP2_I2C_IRQENABLE_SET		0x2C
#define OMAP2_I2C_IRQENABLE_CLR		0x30
#define OMAP2_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 OMAP2_I2C_DMARXENABLE_SET	0x38
#define OMAP2_I2C_DMATXENABLE_SET	0x3C
#define OMAP2_I2C_DMARXENABLE_CLR	0x40
#define		I2C_DMARXENABLE			0x0001
#define OMAP2_I2C_DMATXENABLE_CLR	0x44
#define		I2C_DMATXENABLE			0x0001
#define OMAP2_I2C_DMARXWAKE_EN		0x48
	/* use same bits as IRQ */
#define OMAP2_I2C_DMATXWAKE_EN		0x4C
	/* use same bits as IRQ */
#define OMAP2_I2C_SYSS			0x90
#define		I2C_SYSS_RDONE			0x0001
#define OMAP2_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 OMAP2_I2C_CNT			0x98
#define		I2C_CNT_MASK			0xffff
#define OMAP2_I2C_DATA			0x9C
#define		I2C_DATA_MASK			0x00ff
#define OMAP2_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 OMAP2_I2C_OA			0xA8
#define		I2C_OA_MASK			0x03ff
#define OMAP2_I2C_SA			0xAC
#define		I2C_SA_MASK			0x03ff
#define OMAP2_I2C_PSC			0xB0
#define		I2C_PSC_MASK			0x000f
#define OMAP2_I2C_SCLL			0xB4
#define		I2C_SCLL_MASK			0x000f
#define OMAP2_I2C_SCLH			0xB8
#define		I2C_SCLH_MASK			0x000f
#define OMAP2_I2C_SYSTEST		0xBC
#define OMAP2_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 OMAP2_I2C_OA1			0xC4
#define OMAP2_I2C_OA2			0xC8
#define OMAP2_I2C_OA3			0xCC
	/* same bits as I2C_OA */
#define OMAP2_I2C_ACTOA			0xD0
#define OMAP2_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

#if defined(TI_AM335X)
#define	OMAP2_I2C0_BASE	0x44E0B000
#define	OMAP2_I2C1_BASE	0x4802A000
#define	OMAP2_I2C2_BASE	0x4819C000
#endif /* TI_AM335X */

#endif /* _OMAP2IICREG_H */