blob: ed53414a36d0c4116ce49a0d052d433b6ed8cc6c [file] [log] [blame]
/*
* 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);
}
}