Joonwoo Park | 451dca3 | 2014-04-02 11:47:03 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are 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 copyright |
| 9 | * notice, this list of conditions and the following disclaimer in the |
| 10 | * documentation and/or other materials provided with the distribution. |
| 11 | * * Neither the name of Linux Foundation nor |
| 12 | * the names of its contributors may be used to endorse or promote |
| 13 | * products derived from this software without specific prior written |
| 14 | * permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 19 | * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 20 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 21 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 25 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 26 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <reg.h> |
| 30 | #include <debug.h> |
| 31 | #include <platform/iomap.h> |
| 32 | #include <platform/gpio.h> |
| 33 | |
| 34 | void gpio_tlmm_config(uint32_t gpio, |
| 35 | uint8_t func, |
| 36 | uint8_t dir, |
| 37 | uint8_t pull, |
| 38 | uint8_t drvstr, |
| 39 | uint32_t enable) |
| 40 | { |
| 41 | uint32_t val = 0; |
| 42 | |
| 43 | val |= pull; |
| 44 | val |= func << 2; |
| 45 | val |= drvstr << 6; |
| 46 | val |= enable << 9; |
| 47 | |
| 48 | writel(val, GPIO_CONFIG_ADDR(gpio)); |
| 49 | |
| 50 | return; |
| 51 | } |
| 52 | |
| 53 | void gpio_set(uint32_t gpio, uint32_t dir) |
| 54 | { |
| 55 | writel(dir, GPIO_IN_OUT_ADDR(gpio)); |
| 56 | |
| 57 | return; |
| 58 | } |
| 59 | |
| 60 | uint32_t gpio_get_state(uint32_t gpio) |
| 61 | { |
| 62 | return readl(GPIO_IN_OUT_ADDR(gpio)); |
| 63 | } |
| 64 | |
| 65 | void gpio_config_uart_dm(uint8_t id) |
| 66 | { |
Channagoud Kadabi | 1b69e48 | 2014-09-23 15:20:22 -0700 | [diff] [blame] | 67 | if (id == 3) |
Joonwoo Park | 451dca3 | 2014-04-02 11:47:03 -0700 | [diff] [blame] | 68 | { |
| 69 | /* configure rx gpio. */ |
Channagoud Kadabi | 1b69e48 | 2014-09-23 15:20:22 -0700 | [diff] [blame] | 70 | gpio_tlmm_config(9, 3, GPIO_INPUT, GPIO_NO_PULL, GPIO_6MA, GPIO_DISABLE); |
Joonwoo Park | 451dca3 | 2014-04-02 11:47:03 -0700 | [diff] [blame] | 71 | |
| 72 | /* configure tx gpio. */ |
Channagoud Kadabi | 1b69e48 | 2014-09-23 15:20:22 -0700 | [diff] [blame] | 73 | gpio_tlmm_config(8, 3, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_6MA, GPIO_DISABLE); |
Joonwoo Park | 451dca3 | 2014-04-02 11:47:03 -0700 | [diff] [blame] | 74 | } |
| 75 | else |
| 76 | { |
| 77 | dprintf(CRITICAL, "GPIO config for UART id = %d not supported.\n", id); |
| 78 | ASSERT(0); |
| 79 | } |
| 80 | } |