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kernel/linux-rt-4.4.41/arch/mn10300/unit-asb2305/include/unit/leds.h 1.55 KB
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  /* ASB2305-specific LEDs
   *
   * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   * Written by David Howells (dhowells@redhat.com)
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public Licence
   * as published by the Free Software Foundation; either version
   * 2 of the Licence, or (at your option) any later version.
   */
  
  #ifndef _ASM_UNIT_LEDS_H
  #define _ASM_UNIT_LEDS_H
  
  #include <asm/pio-regs.h>
  #include <asm/cpu-regs.h>
  #include <asm/exceptions.h>
  
  #define ASB2305_7SEGLEDS	__SYSREG(0xA6F90000, u32)
  
  /* perform a hard reset by driving PIO06 low */
  #define mn10300_unit_hard_reset()		\
  do {						\
  	P0OUT &= 0xbf;				\
  	P0MD = (P0MD & P0MD_6) | P0MD_6_OUT;	\
  } while (0)
  
  /*
   * use the 7-segment LEDs to indicate states
   */
  /* indicate double-fault by displaying "db-f" on the LEDs */
  #define mn10300_set_dbfleds			\
  	mov	0x43077f1d,d0		;	\
  	mov	d0,(ASB2305_7SEGLEDS)
  
  /* flip the 7-segment LEDs between "Gdb-" and "----" */
  #define mn10300_set_gdbleds(ONOFF)				\
  do {								\
  	ASB2305_7SEGLEDS = (ONOFF) ? 0x8543077f : 0x7f7f7f7f;	\
  } while (0)
  
  #ifndef __ASSEMBLY__
  extern void peripheral_leds_display_exception(enum exception_code);
  extern void peripheral_leds_led_chase(void);
  extern void peripheral_leds7x4_display_dec(unsigned int, unsigned int);
  extern void peripheral_leds7x4_display_hex(unsigned int, unsigned int);
  extern void peripheral_leds7x4_display_minssecs(unsigned int, unsigned int);
  extern void peripheral_leds7x4_display_rtc(void);
  #endif /* __ASSEMBLY__ */
  
  #endif /* _ASM_UNIT_LEDS_H */