/* * 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);