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Amol Jadicd43ea02011-02-15 20:56:04 -08001/* Copyright (c) 2011, Code Aurora Forum. 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 Code Aurora Forum, Inc. 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>
Amol Jadic52c8a32011-07-12 11:27:04 -070032#include <platform/gpio.h>
33#include <gsbi.h>
Amol Jadicd43ea02011-02-15 20:56:04 -080034
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 unsigned int val = 0;
40 val |= pull;
41 val |= func << 2;
42 val |= drvstr << 6;
43 val |= enable << 9;
44 unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio);
45 writel(val, addr);
46 return;
47}
48
49void gpio_set(uint32_t gpio, uint32_t dir)
50{
51 unsigned int *addr = (unsigned int *)GPIO_IN_OUT_ADDR(gpio);
52 writel(dir, addr);
53 return;
54}
Amol Jadic52c8a32011-07-12 11:27:04 -070055
56/* Configure gpio for uart - based on gsbi id */
57void gpio_config_uart_dm(uint8_t id)
58{
59 switch (id)
60 {
61 case GSBI_ID_5:
62 /* configure rx gpio */
63 gpio_tlmm_config(23, 1, GPIO_INPUT, GPIO_NO_PULL,
64 GPIO_8MA, GPIO_DISABLE);
65 /* configure tx gpio */
66 gpio_tlmm_config(22, 1, GPIO_OUTPUT, GPIO_NO_PULL,
67 GPIO_8MA, GPIO_DISABLE);
68 break;
69 default:
70 ASSERT(0);
71 }
72}
73