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kernel/linux-imx6_3.14.28/sound/oss/vidc.h 1.79 KB
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6b13f685e   김민수   BSP 최초 추가 
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  /*
   *  linux/drivers/sound/vidc.h
   *
   *  Copyright (C) 1997 Russell King <rmk@arm.linux.org.uk>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   *  VIDC sound function prototypes
   */
  
  /* vidc_fill.S */
  
  /*
   * Filler routines for different channels and sample sizes
   */
  
  extern unsigned long vidc_fill_1x8_u(unsigned long ibuf, unsigned long iend,
  				     unsigned long obuf, int mask);
  extern unsigned long vidc_fill_2x8_u(unsigned long ibuf, unsigned long iend,
  				     unsigned long obuf, int mask);
  extern unsigned long vidc_fill_1x8_s(unsigned long ibuf, unsigned long iend,
  				     unsigned long obuf, int mask);
  extern unsigned long vidc_fill_2x8_s(unsigned long ibuf, unsigned long iend,
  				     unsigned long obuf, int mask);
  extern unsigned long vidc_fill_1x16_s(unsigned long ibuf, unsigned long iend,
  				      unsigned long obuf, int mask);
  extern unsigned long vidc_fill_2x16_s(unsigned long ibuf, unsigned long iend,
  				      unsigned long obuf, int mask);
  
  /*
   * DMA Interrupt handler
   */
  
  extern irqreturn_t vidc_sound_dma_irq(int irqnr, void *ref);
  
  /*
   * Filler routine pointer
   */
  
  extern unsigned long (*vidc_filler) (unsigned long ibuf, unsigned long iend,
  				     unsigned long obuf, int mask);
  
  /*
   * Virtual DMA buffer exhausted
   */
  
  extern irqreturn_t (*dma_interrupt) (void);
  
  /*
   * Virtual DMA buffer addresses
   */
  
  extern unsigned long dma_start, dma_count, dma_bufsize;
  extern unsigned long dma_buf[2], dma_pbuf[2];
  
  /* vidc_synth.c */
  
  extern void     vidc_synth_init(struct address_info *hw_config);
  extern void	vidc_synth_exit(struct address_info *hw_config);
  extern int      vidc_synth_get_volume(void);
  extern int      vidc_synth_set_volume(int vol);