| /* |
| * Copyright (c) 2012, 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: |
| * * 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 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 <reg.h> |
| #include <debug.h> |
| #include <platform/iomap.h> |
| #include <platform/gpio.h> |
| |
| void gpio_tlmm_config(uint32_t gpio, |
| uint8_t func, |
| uint8_t dir, |
| uint8_t pull, |
| uint8_t drvstr, |
| uint32_t enable) |
| { |
| uint32_t val = 0; |
| |
| val |= pull; |
| val |= func << 2; |
| val |= drvstr << 6; |
| val |= enable << 9; |
| |
| writel(val, GPIO_CONFIG_ADDR(gpio)); |
| |
| return; |
| } |
| |
| void gpio_set(uint32_t gpio, uint32_t dir) |
| { |
| writel(dir, GPIO_IN_OUT_ADDR(gpio)); |
| |
| return; |
| } |
| |
| uint32_t gpio_get_state(uint32_t gpio) |
| { |
| return readl(GPIO_IN_OUT_ADDR(gpio)); |
| } |
| |
| void gpio_config_uart_dm(uint8_t id) |
| { |
| if (id == 3) |
| { |
| /* configure rx gpio. */ |
| gpio_tlmm_config(9, 1, GPIO_INPUT, GPIO_NO_PULL, GPIO_8MA, GPIO_DISABLE); |
| |
| /* configure tx gpio. */ |
| gpio_tlmm_config(8, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA, GPIO_DISABLE); |
| } |
| else |
| { |
| dprintf(CRITICAL, "GPIO config for UART id = %d not supported.\n", id); |
| ASSERT(0); |
| } |
| } |
| |