vidc.h
上传用户:lgb322
上传日期:2013-02-24
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文件大小:2k
- /*
- * 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.c */
- extern int vidc_busy;
- /* 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 void vidc_sound_dma_irq(int irqnr, void *ref, struct pt_regs *regs);
- /*
- * Filler routine pointer
- */
- extern unsigned long (*vidc_filler) (unsigned long ibuf, unsigned long iend,
- unsigned long obuf, int mask);
- /*
- * Virtual DMA buffer exhausted
- */
- extern void (*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);