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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/drivers/sound/vidc.h
3 *
4 * Copyright (C) 1997 Russell King <rmk@arm.linux.org.uk>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * VIDC sound function prototypes
11 */
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013/* vidc_fill.S */
14
15/*
16 * Filler routines for different channels and sample sizes
17 */
18
19extern unsigned long vidc_fill_1x8_u(unsigned long ibuf, unsigned long iend,
20 unsigned long obuf, int mask);
21extern unsigned long vidc_fill_2x8_u(unsigned long ibuf, unsigned long iend,
22 unsigned long obuf, int mask);
23extern unsigned long vidc_fill_1x8_s(unsigned long ibuf, unsigned long iend,
24 unsigned long obuf, int mask);
25extern unsigned long vidc_fill_2x8_s(unsigned long ibuf, unsigned long iend,
26 unsigned long obuf, int mask);
27extern unsigned long vidc_fill_1x16_s(unsigned long ibuf, unsigned long iend,
28 unsigned long obuf, int mask);
29extern unsigned long vidc_fill_2x16_s(unsigned long ibuf, unsigned long iend,
30 unsigned long obuf, int mask);
31
32/*
33 * DMA Interrupt handler
34 */
35
36extern irqreturn_t vidc_sound_dma_irq(int irqnr, void *ref, struct pt_regs *regs);
37
38/*
39 * Filler routine pointer
40 */
41
42extern unsigned long (*vidc_filler) (unsigned long ibuf, unsigned long iend,
43 unsigned long obuf, int mask);
44
45/*
46 * Virtual DMA buffer exhausted
47 */
48
49extern irqreturn_t (*dma_interrupt) (void);
50
51/*
52 * Virtual DMA buffer addresses
53 */
54
55extern unsigned long dma_start, dma_count, dma_bufsize;
56extern unsigned long dma_buf[2], dma_pbuf[2];
57
58/* vidc_synth.c */
59
60extern void vidc_synth_init(struct address_info *hw_config);
61extern void vidc_synth_exit(struct address_info *hw_config);
62extern int vidc_synth_get_volume(void);
63extern int vidc_synth_set_volume(int vol);