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TOMOYO Linux Cross Reference
Linux/include/sound/initval.h

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  1 /* SPDX-License-Identifier: GPL-2.0-or-later */
  2 #ifndef __SOUND_INITVAL_H
  3 #define __SOUND_INITVAL_H
  4 
  5 /*
  6  *  Init values for soundcard modules
  7  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  8  */
  9 
 10 #define SNDRV_AUTO_PORT         1
 11 #define SNDRV_AUTO_IRQ          0xffff
 12 #define SNDRV_AUTO_DMA          0xffff
 13 #define SNDRV_AUTO_DMA_SIZE     (0x7fffffff)
 14 
 15 #define SNDRV_DEFAULT_IDX1      (-1)
 16 #define SNDRV_DEFAULT_STR1      NULL
 17 #define SNDRV_DEFAULT_ENABLE1   1
 18 #define SNDRV_DEFAULT_PORT1     SNDRV_AUTO_PORT
 19 #define SNDRV_DEFAULT_IRQ1      SNDRV_AUTO_IRQ
 20 #define SNDRV_DEFAULT_DMA1      SNDRV_AUTO_DMA
 21 #define SNDRV_DEFAULT_DMA_SIZE1 SNDRV_AUTO_DMA_SIZE
 22 #define SNDRV_DEFAULT_PTR1      SNDRV_DEFAULT_STR1
 23 
 24 #define SNDRV_DEFAULT_IDX       { [0 ... (SNDRV_CARDS-1)] = -1 }
 25 #define SNDRV_DEFAULT_STR       { [0 ... (SNDRV_CARDS-1)] = NULL }
 26 #define SNDRV_DEFAULT_ENABLE    { 1, [1 ... (SNDRV_CARDS-1)] = 0 }
 27 #define SNDRV_DEFAULT_ENABLE_PNP { [0 ... (SNDRV_CARDS-1)] = 1 }
 28 #ifdef CONFIG_PNP
 29 #define SNDRV_DEFAULT_ENABLE_ISAPNP SNDRV_DEFAULT_ENABLE_PNP
 30 #else
 31 #define SNDRV_DEFAULT_ENABLE_ISAPNP SNDRV_DEFAULT_ENABLE
 32 #endif
 33 #define SNDRV_DEFAULT_PORT      { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_PORT }
 34 #define SNDRV_DEFAULT_IRQ       { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_IRQ }
 35 #define SNDRV_DEFAULT_DMA       { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_DMA }
 36 #define SNDRV_DEFAULT_DMA_SIZE  { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_DMA_SIZE }
 37 #define SNDRV_DEFAULT_PTR       SNDRV_DEFAULT_STR
 38 
 39 #ifdef SNDRV_LEGACY_FIND_FREE_IOPORT
 40 static long snd_legacy_find_free_ioport(long *port_table, long size)
 41 {
 42         while (*port_table != -1) {
 43                 if (request_region(*port_table, size, "ALSA test")) {
 44                         release_region(*port_table, size);
 45                         return *port_table;
 46                 }
 47                 port_table++;
 48         }
 49         return -1;
 50 }
 51 #endif
 52 
 53 #ifdef SNDRV_LEGACY_FIND_FREE_IRQ
 54 #include <linux/interrupt.h>
 55 
 56 static irqreturn_t snd_legacy_empty_irq_handler(int irq, void *dev_id)
 57 {
 58         return IRQ_HANDLED;
 59 }
 60 
 61 static int snd_legacy_find_free_irq(int *irq_table)
 62 {
 63         while (*irq_table != -1) {
 64                 if (!request_irq(*irq_table, snd_legacy_empty_irq_handler,
 65                                  IRQF_PROBE_SHARED, "ALSA Test IRQ",
 66                                  (void *) irq_table)) {
 67                         free_irq(*irq_table, (void *) irq_table);
 68                         return *irq_table;
 69                 }
 70                 irq_table++;
 71         }
 72         return -1;
 73 }
 74 #endif
 75 
 76 #ifdef SNDRV_LEGACY_FIND_FREE_DMA
 77 static int snd_legacy_find_free_dma(int *dma_table)
 78 {
 79         while (*dma_table != -1) {
 80                 if (!request_dma(*dma_table, "ALSA Test DMA")) {
 81                         free_dma(*dma_table);
 82                         return *dma_table;
 83                 }
 84                 dma_table++;
 85         }
 86         return -1;
 87 }
 88 #endif
 89 
 90 #endif /* __SOUND_INITVAL_H */
 91 

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