63cdf42e8c
add the ability for userland to be notified of changes on gpio pins via a select(2)/read(2) interface. Change the interrupt handler from filtered to threaded. Because of the uiomove() calls in the new interface, change locking from standard mutex to sx. Add / restore the at91_gpio_high_z() function. Reviewed by: imp (long ago)
50 lines
2.3 KiB
C
50 lines
2.3 KiB
C
/*-
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* Copyright (c) 2006 M. Warner Losh. 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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#ifndef ARM_AT91_AT91_PIOVAR_H
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#define ARM_AT91_AT91_PIOVAR_H
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void at91_pio_use_periph_a(uint32_t pio, uint32_t periph_a_mask,
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int use_pullup);
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void at91_pio_use_periph_b(uint32_t pio, uint32_t periph_b_mask,
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int use_pullup);
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void at91_pio_use_gpio(uint32_t pio, uint32_t gpio_mask);
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void at91_pio_gpio_input(uint32_t pio, uint32_t input_enable_mask);
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void at91_pio_gpio_output(uint32_t pio, uint32_t output_enable_mask,
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int use_pullup);
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void at91_pio_gpio_high_z(uint32_t pio, uint32_t high_z_mask, int enable);
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void at91_pio_gpio_set(uint32_t pio, uint32_t data_mask);
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void at91_pio_gpio_clear(uint32_t pio, uint32_t data_mask);
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uint8_t at91_pio_gpio_get(uint32_t pio, uint32_t data_mask);
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void at91_pio_gpio_set_deglitch(uint32_t pio, uint32_t data_mask,
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int use_deglitch);
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void at91_pio_gpio_set_interrupt(uint32_t pio, uint32_t data_mask,
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int enable_interrupt);
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uint32_t at91_pio_gpio_clear_interrupt(uint32_t pio);
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#endif /* ARM_AT91_AT91_PIOVAR_H */
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