forked from mirrors/linux
f5f87abfb7
Declare the arrays passed to the helper functions for legacy resources (mostly for ISA drivers) as const, so that each caller can make its static data as const for minor optimizations, too. Link: https://lore.kernel.org/r/20200105144823.29547-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __SOUND_INITVAL_H
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#define __SOUND_INITVAL_H
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/*
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* Init values for soundcard modules
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#define SNDRV_AUTO_PORT 1
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#define SNDRV_AUTO_IRQ 0xffff
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#define SNDRV_AUTO_DMA 0xffff
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#define SNDRV_AUTO_DMA_SIZE (0x7fffffff)
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#define SNDRV_DEFAULT_IDX1 (-1)
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#define SNDRV_DEFAULT_STR1 NULL
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#define SNDRV_DEFAULT_ENABLE1 1
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#define SNDRV_DEFAULT_PORT1 SNDRV_AUTO_PORT
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#define SNDRV_DEFAULT_IRQ1 SNDRV_AUTO_IRQ
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#define SNDRV_DEFAULT_DMA1 SNDRV_AUTO_DMA
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#define SNDRV_DEFAULT_DMA_SIZE1 SNDRV_AUTO_DMA_SIZE
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#define SNDRV_DEFAULT_PTR1 SNDRV_DEFAULT_STR1
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#define SNDRV_DEFAULT_IDX { [0 ... (SNDRV_CARDS-1)] = -1 }
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#define SNDRV_DEFAULT_STR { [0 ... (SNDRV_CARDS-1)] = NULL }
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#define SNDRV_DEFAULT_ENABLE { 1, [1 ... (SNDRV_CARDS-1)] = 0 }
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#define SNDRV_DEFAULT_ENABLE_PNP { [0 ... (SNDRV_CARDS-1)] = 1 }
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#ifdef CONFIG_PNP
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#define SNDRV_DEFAULT_ENABLE_ISAPNP SNDRV_DEFAULT_ENABLE_PNP
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#else
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#define SNDRV_DEFAULT_ENABLE_ISAPNP SNDRV_DEFAULT_ENABLE
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#endif
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#define SNDRV_DEFAULT_PORT { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_PORT }
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#define SNDRV_DEFAULT_IRQ { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_IRQ }
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#define SNDRV_DEFAULT_DMA { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_DMA }
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#define SNDRV_DEFAULT_DMA_SIZE { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_DMA_SIZE }
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#define SNDRV_DEFAULT_PTR SNDRV_DEFAULT_STR
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#ifdef SNDRV_LEGACY_FIND_FREE_IOPORT
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static long snd_legacy_find_free_ioport(const long *port_table, long size)
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{
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while (*port_table != -1) {
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if (request_region(*port_table, size, "ALSA test")) {
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release_region(*port_table, size);
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return *port_table;
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}
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port_table++;
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}
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return -1;
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}
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#endif
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#ifdef SNDRV_LEGACY_FIND_FREE_IRQ
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#include <linux/interrupt.h>
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static irqreturn_t snd_legacy_empty_irq_handler(int irq, void *dev_id)
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{
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return IRQ_HANDLED;
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}
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static int snd_legacy_find_free_irq(const int *irq_table)
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{
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while (*irq_table != -1) {
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if (!request_irq(*irq_table, snd_legacy_empty_irq_handler,
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IRQF_PROBE_SHARED, "ALSA Test IRQ",
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(void *) irq_table)) {
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free_irq(*irq_table, (void *) irq_table);
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return *irq_table;
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}
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irq_table++;
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}
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return -1;
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}
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#endif
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#ifdef SNDRV_LEGACY_FIND_FREE_DMA
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static int snd_legacy_find_free_dma(const int *dma_table)
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{
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while (*dma_table != -1) {
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if (!request_dma(*dma_table, "ALSA Test DMA")) {
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free_dma(*dma_table);
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return *dma_table;
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}
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dma_table++;
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}
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return -1;
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}
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#endif
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#endif /* __SOUND_INITVAL_H */
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