| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 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 | |
| 13 | /* vidc_fill.S */ |
| 14 | |
| 15 | /* |
| 16 | * Filler routines for different channels and sample sizes |
| 17 | */ |
| 18 | |
| 19 | extern unsigned long vidc_fill_1x8_u(unsigned long ibuf, unsigned long iend, |
| 20 | unsigned long obuf, int mask); |
| 21 | extern unsigned long vidc_fill_2x8_u(unsigned long ibuf, unsigned long iend, |
| 22 | unsigned long obuf, int mask); |
| 23 | extern unsigned long vidc_fill_1x8_s(unsigned long ibuf, unsigned long iend, |
| 24 | unsigned long obuf, int mask); |
| 25 | extern unsigned long vidc_fill_2x8_s(unsigned long ibuf, unsigned long iend, |
| 26 | unsigned long obuf, int mask); |
| 27 | extern unsigned long vidc_fill_1x16_s(unsigned long ibuf, unsigned long iend, |
| 28 | unsigned long obuf, int mask); |
| 29 | extern 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 | |
| 36 | extern irqreturn_t vidc_sound_dma_irq(int irqnr, void *ref); |
| 37 | |
| 38 | /* |
| 39 | * Filler routine pointer |
| 40 | */ |
| 41 | |
| 42 | extern 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 | |
| 49 | extern irqreturn_t (*dma_interrupt) (void); |
| 50 | |
| 51 | /* |
| 52 | * Virtual DMA buffer addresses |
| 53 | */ |
| 54 | |
| 55 | extern unsigned long dma_start, dma_count, dma_bufsize; |
| 56 | extern unsigned long dma_buf[2], dma_pbuf[2]; |
| 57 | |
| 58 | /* vidc_synth.c */ |
| 59 | |
| 60 | extern void vidc_synth_init(struct address_info *hw_config); |
| 61 | extern void vidc_synth_exit(struct address_info *hw_config); |
| 62 | extern int vidc_synth_get_volume(void); |
| 63 | extern int vidc_synth_set_volume(int vol); |