78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/* Copyright (c) 2015-2016 The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <debug.h>
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#include <reg.h>
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#include <platform/iomap.h>
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#include <platform/gpio.h>
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#include <blsp_qup.h>
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void gpio_tlmm_config(uint32_t gpio, uint8_t func,
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uint8_t dir, uint8_t pull,
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uint8_t drvstr, uint32_t enable)
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{
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uint32_t val = 0;
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val |= pull;
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val |= func << 2;
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val |= drvstr << 6;
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val |= dir << 9;
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writel(val, (uint32_t *)GPIO_CONFIG_ADDR(gpio));
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return;
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}
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/*Set a value to gpio either 0 or 1*/
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void gpio_set_val(uint32_t gpio, uint32_t val)
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{
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writel((val << 0x1), (uint32_t *)GPIO_IN_OUT_ADDR(gpio));
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return;
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}
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uint32_t gpio_get_state(uint32_t gpio)
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{
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return readl(GPIO_IN_OUT_ADDR(gpio));
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}
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uint32_t gpio_status(uint32_t gpio)
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{
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return readl(GPIO_IN_OUT_ADDR(gpio)) & GPIO_IN;
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}
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/* Configure gpio for blsp uart 2 */
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void gpio_config_uart_dm(uint8_t id)
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{
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/* configure rx gpio */
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gpio_tlmm_config(9, 2, GPIO_INPUT, GPIO_NO_PULL,
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GPIO_8MA, GPIO_DISABLE);
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/* configure tx gpio */
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gpio_tlmm_config(8, 2, GPIO_OUTPUT, GPIO_NO_PULL,
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GPIO_8MA, GPIO_DISABLE);
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}
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