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(const 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(const 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(const 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