133 lines
2.8 KiB
C
133 lines
2.8 KiB
C
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/*
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* (C) Copyright 2003, Li-Pro.Net <www.li-pro.net>
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* Stephan Linz <linz@li-pro.net>
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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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* asm-nios/status_led.h
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*
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* NIOS PIO based status led support functions
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*/
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#ifndef __ASM_STATUS_LED_H__
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#define __ASM_STATUS_LED_H__
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#include <nios-io.h>
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/* led_id_t is unsigned int mask */
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typedef unsigned int led_id_t;
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#ifdef STATUS_LED_WRONLY /* emulate read access */
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static led_id_t __led_portval = 0;
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#endif
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static inline void __led_init (led_id_t mask, int state)
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{
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nios_pio_t *piop = (nios_pio_t*)STATUS_LED_BASE;
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#ifdef STATUS_LED_WRONLY /* emulate read access */
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#if (STATUS_LED_ACTIVE == 0)
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if (state == STATUS_LED_ON)
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__led_portval &= ~mask;
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else
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__led_portval |= mask;
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#else
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if (state == STATUS_LED_ON)
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__led_portval |= mask;
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else
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__led_portval &= ~mask;
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#endif
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piop->data = __led_portval;
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#else /* !STATUS_LED_WRONLY */
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#if (STATUS_LED_ACTIVE == 0)
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if (state == STATUS_LED_ON)
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piop->data &= ~mask;
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else
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piop->data |= mask;
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#else
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if (state == STATUS_LED_ON)
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piop->data |= mask;
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else
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piop->data &= ~mask;
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#endif
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piop->direction |= mask;
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#endif /* STATUS_LED_WRONLY */
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}
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static inline void __led_toggle (led_id_t mask)
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{
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nios_pio_t *piop = (nios_pio_t*)STATUS_LED_BASE;
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#ifdef STATUS_LED_WRONLY /* emulate read access */
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__led_portval ^= mask;
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piop->data = __led_portval;
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#else /* !STATUS_LED_WRONLY */
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piop->data ^= mask;
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#endif /* STATUS_LED_WRONLY */
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}
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static inline void __led_set (led_id_t mask, int state)
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{
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nios_pio_t *piop = (nios_pio_t*)STATUS_LED_BASE;
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#ifdef STATUS_LED_WRONLY /* emulate read access */
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#if (STATUS_LED_ACTIVE == 0)
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if (state == STATUS_LED_ON)
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__led_portval &= ~mask;
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else
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__led_portval |= mask;
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#else
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if (state == STATUS_LED_ON)
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__led_portval |= mask;
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else
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__led_portval &= ~mask;
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#endif
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piop->data = __led_portval;
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#else /* !STATUS_LED_WRONLY */
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#if (STATUS_LED_ACTIVE == 0)
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if (state == STATUS_LED_ON)
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piop->data &= ~mask;
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else
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piop->data |= mask;
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#else
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if (state == STATUS_LED_ON)
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piop->data |= mask;
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else
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piop->data &= ~mask;
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#endif
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#endif /* STATUS_LED_WRONLY */
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}
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#endif /* __ASM_STATUS_LED_H__ */
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