| /* Copyright (c) 2010-2011, 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 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 <debug.h> |
| #include <reg.h> |
| #include <platform/iomap.h> |
| #include <platform/gpio.h> |
| #include <gsbi.h> |
| |
| void gpio_tlmm_config(uint32_t gpio, uint8_t func, |
| uint8_t dir, uint8_t pull, |
| uint8_t drvstr, uint32_t enable) |
| { |
| unsigned int val = 0; |
| val |= pull; |
| val |= func << 2; |
| val |= drvstr << 6; |
| val |= enable << 9; |
| unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio); |
| writel(val, addr); |
| return; |
| } |
| |
| void gpio_set(uint32_t gpio, uint32_t dir) |
| { |
| unsigned int *addr = (unsigned int *)GPIO_IN_OUT_ADDR(gpio); |
| writel(dir, addr); |
| return; |
| } |
| |
| /* Configure gpio for uart - based on gsbi id */ |
| void gpio_config_uart_dm(uint8_t id) |
| { |
| switch (id) { |
| case GSBI_ID_12: |
| /* configure rx gpio */ |
| gpio_tlmm_config(117, 2, GPIO_INPUT, GPIO_NO_PULL, |
| GPIO_8MA, GPIO_DISABLE); |
| /* configure tx gpio */ |
| gpio_tlmm_config(118, 2, GPIO_OUTPUT, GPIO_NO_PULL, |
| GPIO_8MA, GPIO_DISABLE); |
| break; |
| default: |
| ASSERT(0); |
| } |
| } |
| |
| /* Configure gpio for i2c - based on gsbi id */ |
| void gpio_config_i2c(uint8_t id) |
| { |
| switch (id) { |
| case GSBI_ID_8: |
| gpio_tlmm_config(64, 1, GPIO_OUTPUT, GPIO_NO_PULL, |
| GPIO_2MA, GPIO_DISABLE); |
| gpio_tlmm_config(65, 1, GPIO_OUTPUT, GPIO_NO_PULL, |
| GPIO_2MA, GPIO_DISABLE); |
| break; |
| default: |
| ASSERT(0); |
| } |
| } |
| |
| void gpio_config_pshold(void) |
| { |
| gpio_tlmm_config(92, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_12MA, |
| GPIO_DISABLE); |
| } |