blob: 05b4977ecb82ab454179a5dbf9d0c033e69c8b12 [file] [log] [blame]
Aparna Mallavarapuca676882015-01-19 20:39:06 +05301/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 * * Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above
9 * copyright notice, this list of conditions and the following
10 * disclaimer in the documentation and/or other materials provided
11 * with the distribution.
12 * * Neither the name of The Linux Foundation nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <debug.h>
30#include <reg.h>
31#include <platform/iomap.h>
32#include <platform/gpio.h>
33#include <blsp_qup.h>
34
35void gpio_tlmm_config(uint32_t gpio, uint8_t func,
36 uint8_t dir, uint8_t pull,
37 uint8_t drvstr, uint32_t enable)
38{
39 uint32_t val = 0;
40
41 val |= pull;
42 val |= func << 2;
43 val |= drvstr << 6;
44 val |= enable << 9;
45
46 writel(val, (uint32_t *)GPIO_CONFIG_ADDR(gpio));
47 return;
48}
49
50void gpio_set_dir(uint32_t gpio, uint32_t dir)
51{
52 writel(dir, (uint32_t *)GPIO_IN_OUT_ADDR(gpio));
53
54 return;
55}
56
57uint32_t gpio_status(uint32_t gpio)
58{
59 return readl(GPIO_IN_OUT_ADDR(gpio)) & GPIO_IN;
60}
61
62/* Configure gpio for blsp uart 2 */
63void gpio_config_uart_dm(uint8_t id)
64{
65 /* configure rx gpio */
66 gpio_tlmm_config(5, 2, GPIO_INPUT, GPIO_NO_PULL,
67 GPIO_8MA, GPIO_DISABLE);
68
69 /* configure tx gpio */
70 gpio_tlmm_config(4, 2, GPIO_OUTPUT, GPIO_NO_PULL,
71 GPIO_8MA, GPIO_DISABLE);
72}