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
|
/*
* This file is part of the coreboot project.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 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 <device/mmio.h>
#include <soc/blsp.h>
#include <soc/gpio.h>
#include <soc/iomap.h>
#include <soc/clock.h>
blsp_return_t blsp_i2c_init(blsp_qup_id_t id)
{
void *base;
switch (id) {
case BLSP_QUP_ID_1:
gpio_configure
(GPIO(24), 2, GPIO_PULL_UP, GPIO_2MA, GPIO_OUTPUT);
gpio_configure
(GPIO(25), 2, GPIO_PULL_UP, GPIO_2MA, GPIO_OUTPUT);
break;
default:
return BLSP_ID_ERROR;
}
clock_configure_i2c(19200000);
clock_enable_i2c();
base = blsp_qup_base(id);
if (!base)
return BLSP_ID_ERROR;
/* Configure Mini core to I2C core */
clrsetbits32(base, BLSP_MINI_CORE_MASK, BLSP_MINI_CORE_I2C);
return BLSP_SUCCESS;
}
|
