RTEMS 6.1-rc7
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i2c.h
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1
9/*
10 * Copyright (c) 2012 Claas Ziemke. All rights reserved.
11 *
12 * Claas Ziemke
13 * Kernerstrasse 11
14 * 70182 Stuttgart
15 * Germany
16 * <claas.ziemke@gmx.net>
17 *
18 * The license and distribution terms for this file may be
19 * found in the file LICENSE in this distribution or at
20 * http://www.rtems.org/license/LICENSE.
21 */
22
23#ifndef LIBBSP_ARM_BEAGLE_I2C_H
24#define LIBBSP_ARM_BEAGLE_I2C_H
25
26#include <rtems.h>
27#include <bsp.h>
28#include <dev/i2c/i2c.h>
29#include <ofw/ofw.h>
30
31#ifdef __cplusplus
32extern "C" {
33#endif /* __cplusplus */
34
35#define BBB_I2C_SYSCLK 48000000
36#define BBB_I2C_INTERNAL_CLK 12000000
37
38#define BBB_I2C_0_BUS_PATH "/dev/i2c-0"
39#define BBB_I2C_1_BUS_PATH "/dev/i2c-1"
40#define BBB_I2C_2_BUS_PATH "/dev/i2c-2"
41
42typedef enum {
43 I2C0,
44 I2C1,
45 I2C2,
46 I2C_COUNT
47} bbb_i2c_id_t;
48
49typedef struct i2c_regs {
50 uint32_t BBB_I2C_REVNB_LO;
51 uint32_t BBB_I2C_REVNB_HI;
52 uint32_t dummy1[ 2 ];
53 uint32_t BBB_I2C_SYSC;
54 uint32_t dummy2[ 4 ];
55 uint32_t BBB_I2C_IRQSTATUS_RAW;
56 uint32_t BBB_I2C_IRQSTATUS;
57 uint32_t BBB_I2C_IRQENABLE_SET;
58 uint32_t BBB_I2C_IRQENABLE_CLR;
59 uint32_t BBB_I2C_WE;
60 uint32_t BBB_I2C_DMARXENABLE_SET;
61 uint32_t BBB_I2C_DMATXENABLE_SET;
62 uint32_t BBB_I2C_DMARXENABLE_CLR;
63 uint32_t BBB_I2C_DMATXENABLE_CLR;
64 uint32_t BBB_I2C_DMARXWAKE_EN;
65 uint32_t BBB_I2C_DMATXWAKE_EN;
66 uint32_t dummy3[ 16 ];
67 uint32_t BBB_I2C_SYSS;
68 uint32_t BBB_I2C_BUF;
69 uint32_t BBB_I2C_CNT;
70 uint32_t BBB_I2C_DATA;
71 uint32_t dummy4;
72 uint32_t BBB_I2C_CON;
73 uint32_t BBB_I2C_OA;
74 uint32_t BBB_I2C_SA;
75 uint32_t BBB_I2C_PSC;
76 uint32_t BBB_I2C_SCLL;
77 uint32_t BBB_I2C_SCLH;
78 uint32_t BBB_I2C_SYSTEST;
79 uint32_t BBB_I2C_BUFSTAT;
80 uint32_t BBB_I2C_OA1;
81 uint32_t BBB_I2C_OA2;
82 uint32_t BBB_I2C_OA3;
83 uint32_t BBB_I2C_ACTOA;
84 uint32_t BBB_I2C_SBLOCK;
86
87void beagle_i2c_init( phandle_t node );
88
89#ifdef __cplusplus
90}
91#endif /* __cplusplus */
92
93#endif /* LIBBSP_ARM_BEAGLE_I2C_H */
Inter-Integrated Circuit (I2C) Driver API.
uint32_t phandle_t
Definition: ofw.h:56
This header file defines the RTEMS Classic API.
Definition: i2c.h:49