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https://github.com/AsahiLinux/u-boot
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92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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* Copyright (C) 2006, 2008 Atmel Corporation
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/memory-map.h>
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#include <asm/arch/gpio.h>
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void portmux_select_peripheral(void *port, unsigned long pin_mask,
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enum portmux_function func, unsigned long flags)
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{
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if (flags & PORTMUX_PULL_UP)
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pio_writel(port, PUER, pin_mask);
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else
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pio_writel(port, PUDR, pin_mask);
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switch (func) {
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case PORTMUX_FUNC_A:
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pio_writel(port, ASR, pin_mask);
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break;
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case PORTMUX_FUNC_B:
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pio_writel(port, BSR, pin_mask);
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break;
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}
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pio_writel(port, PDR, pin_mask);
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}
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void portmux_select_gpio(void *port, unsigned long pin_mask,
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unsigned long flags)
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{
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if (flags & PORTMUX_PULL_UP)
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pio_writel(port, PUER, pin_mask);
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else
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pio_writel(port, PUDR, pin_mask);
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if (flags & PORTMUX_OPEN_DRAIN)
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pio_writel(port, MDER, pin_mask);
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else
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pio_writel(port, MDDR, pin_mask);
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if (flags & PORTMUX_DIR_OUTPUT) {
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if (flags & PORTMUX_INIT_HIGH)
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pio_writel(port, SODR, pin_mask);
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else
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pio_writel(port, CODR, pin_mask);
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pio_writel(port, OER, pin_mask);
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} else {
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pio_writel(port, ODR, pin_mask);
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}
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pio_writel(port, PER, pin_mask);
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}
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void pio_set_output_value(unsigned int pin, int value)
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{
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void *port = pio_pin_to_port(pin);
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if (!port)
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panic("Invalid GPIO pin %u\n", pin);
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__pio_set_output_value(port, pin & 0x1f, value);
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}
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int pio_get_input_value(unsigned int pin)
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{
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void *port = pio_pin_to_port(pin);
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if (!port)
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panic("Invalid GPIO pin %u\n", pin);
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return __pio_get_input_value(port, pin & 0x1f);
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}
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