i2c-omap24xx.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 105 行

/*
 * drivers/i2c/busses/i2c-omap24xx.h
 *
 * I2C driver for OMAP24xx I2C controller.
 *
 * Author: Andy Lowe ([e-mail])
 *
 * Copyright (C) 2004 MontaVista Software, Inc.
 * Copyright (C) 2004 Texas Instruments.
 *
 * This file is licensed under the terms of the GNU General Public License 
 * version 2. This program is licensed "as is" without any warranty of any 
 * kind, whether express or implied.
 */

#ifndef OMAP24XXI2C_H
#define OMAP24XXI2C_H

/* physical memory map definitions */
	/* I2C1 module */
#define I2C1_REG_BASE		0x48070000
#define I2C1_REG_SIZE		0x00001000
	/* I2C2 module */
#define I2C2_REG_BASE		0x48072000
#define I2C2_REG_SIZE		0x00001000

/* define I2C register offsets */
#define I2C_REV			0x00
#define I2C_IE			0x04
#define I2C_STAT		0x08
#define I2C_SYSS		0x10
#define I2C_BUF			0x14
#define I2C_CNT			0x18
#define I2C_DATA		0x1C
#define I2C_SYSC		0x20
#define I2C_CON			0x24
#define I2C_OA			0x28
#define I2C_SA			0x2C
#define I2C_PSC			0x30
#define I2C_SCLL		0x34
#define I2C_SCLH		0x38
#define I2C_SYSTEST		0x3C

/* Define bit fields within selected registers */
#define I2C_REV_MAJOR				(15 << 4)
#define I2C_REV_MAJOR_SHIFT			4
#define I2C_REV_MINOR				(15 << 0)
#define I2C_REV_MINOR_SHIFT			0

#define I2C_IE_GC_IE				(1 <<  5)
#define I2C_IE_XRDY_IE				(1 <<  4)
#define I2C_IE_RRDY_IE				(1 <<  3)
#define I2C_IE_ARDY_IE				(1 <<  2)
#define I2C_IE_NACK_IE				(1 <<  1)
#define I2C_IE_AL_IE				(1 <<  0)

#define I2C_STAT_SBD				(1 << 15)
#define I2C_STAT_BB				(1 << 12)
#define I2C_STAT_ROVR				(1 << 11)
#define I2C_STAT_XUDF				(1 << 10)
#define I2C_STAT_AAS				(1 <<  9)
#define I2C_STAT_GC				(1 <<  5)
#define I2C_STAT_XRDY				(1 <<  4)
#define I2C_STAT_RRDY				(1 <<  3)
#define I2C_STAT_ARDY				(1 <<  2)
#define I2C_STAT_NACK				(1 <<  1)
#define I2C_STAT_AL				(1 <<  0)

#define I2C_SYSS_RDONE				(1 <<  0)

#define I2C_BUF_RDMA_EN	 			(1 << 15)
#define I2C_BUF_XDMA_EN	 			(1 <<  7)

#define I2C_SYSC_SRST				(1 <<  1)

#define I2C_CON_I2C_EN				(1 << 15)
#define I2C_CON_BE				(1 << 14)
#define I2C_CON_STB				(1 << 11)
#define I2C_CON_MST				(1 << 10)
#define I2C_CON_TRX				(1 <<  9)
#define I2C_CON_XA				(1 <<  8)
#define I2C_CON_STP				(1 <<  1)
#define I2C_CON_STT				(1 <<  0)

#define I2C_SYSTEST_ST_EN			(1 << 15)
#define I2C_SYSTEST_FREE			(1 << 14)
#define I2C_SYSTEST_TMODE			(3 << 12)
#define I2C_SYSTEST_TMODE_FUNCTIONAL		(0 << 12)
#define I2C_SYSTEST_TMODE_CLOCK			(2 << 12)
#define I2C_SYSTEST_TMODE_LOOPBACK		(3 << 12)
#define I2C_SYSTEST_SCL_I			(1 <<  3)
#define I2C_SYSTEST_SCL_O			(1 <<  2)
#define I2C_SYSTEST_SDA_I			(1 <<  1)
#define I2C_SYSTEST_SDA_O			(1 <<  0)

#define PRCM_CLK_EN_PLL      0x500
#define PRCM_CLK_SEL1_PLL    0x540
#define PRCM_FCLK_EN2_CORE   0x204
#define PRCM_ICLK_EN2_CORE   0x214

#define omap_prcmreg_read(reg) readl(OMAP24XX_VA_PRCM_BASE + reg)
#define omap_prcmreg_write(data,reg) writel(data, OMAP24XX_VA_PRCM_BASE + reg)

#endif	/* ifndef OMAP24XXI2C_H */