1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* This file is part of the depthcharge project.
*
* Copyright (C) 2014 - 2015 The Linux Foundation. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <gpio.h>
#include <soc/gpio.h>
#include <soc/blsp.h>
#include <soc/qup.h>
#define IPQ40XX_I2C0_PINGROUP_1 1
#define IPQ40XX_I2C0_PINGROUP_2 (!IPQ40XX_I2C0_PINGROUP_1)
#if IPQ40XX_I2C0_PINGROUP_1
#define SCL_GPIO 20
#define SDA_GPIO 21
#define GPIO_FUNC_SCL 0x1
#define GPIO_FUNC_SDA 0x1
#elif IPQ40XX_I2C0_PINGROUP_2
#define SCL_GPIO 58
#define SDA_GPIO 59
#define GPIO_FUNC_SCL 0x3
#define GPIO_FUNC_SDA 0x2
#else
#warning "TPM: I2C pingroup not specified"
#endif
int blsp_i2c_init_board(blsp_qup_id_t id)
{
switch (id) {
case BLSP_QUP_ID_0:
case BLSP_QUP_ID_1:
case BLSP_QUP_ID_2:
case BLSP_QUP_ID_3:
#if defined(IPQ40XX_I2C0_PINGROUP_1) || defined(IPQ40XX_I2C0_PINGROUP_2)
gpio_tlmm_config_set(SDA_GPIO, GPIO_FUNC_SDA,
GPIO_NO_PULL, GPIO_2MA, 1);
gpio_tlmm_config_set(SCL_GPIO, GPIO_FUNC_SCL,
GPIO_NO_PULL, GPIO_2MA, 1);
#endif /* Pin Group 1 or 2 */
break;
default:
return 1;
}
return 0;
}
|
