875065491f
One of the issues with the ASoC v1 API which has been addressed in the ASoC v2 work that Liam Girdwood has done is that the ALSA card provided by ASoC is distributed around the ASoC structures. For example, machine wide data such as the struct snd_card are maintained as part of the CODEC data structure, preventing the use of multiple codecs. This has been addressed by refactoring the data structures so that all the data for the ALSA card is contained in a single structure snd_soc_card which replaces the existing snd_soc_machine and snd_soc_device. Begin the process of backporting this by renaming struct snd_soc_machine to struct snd_soc_card, better reflecting its function and bringing it closer to standard ALSA terminology. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/*
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* Sample Au12x0/Au1550 PSC AC97 sound machine.
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*
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* Copyright (c) 2007-2008 Manuel Lauss <mano@roarinelk.homelinux.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms outlined in the file COPYING at the root of this
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* source archive.
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*
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* This is a very generic AC97 sound machine driver for boards which
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* have (AC97) audio at PSC1 (e.g. DB1200 demoboards).
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/mach-au1x00/au1000.h>
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#include <asm/mach-au1x00/au1xxx_psc.h>
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#include <asm/mach-au1x00/au1xxx_dbdma.h>
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#include "../codecs/ac97.h"
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#include "psc.h"
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static int au1xpsc_sample_ac97_init(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_sync(codec);
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return 0;
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}
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static struct snd_soc_dai_link au1xpsc_sample_ac97_dai = {
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.name = "AC97",
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.stream_name = "AC97 HiFi",
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.cpu_dai = &au1xpsc_ac97_dai, /* see psc-ac97.c */
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.codec_dai = &ac97_dai, /* see codecs/ac97.c */
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.init = au1xpsc_sample_ac97_init,
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.ops = NULL,
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};
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static struct snd_soc_card au1xpsc_sample_ac97_machine = {
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.name = "Au1xxx PSC AC97 Audio",
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.dai_link = &au1xpsc_sample_ac97_dai,
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.num_links = 1,
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};
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static struct snd_soc_device au1xpsc_sample_ac97_devdata = {
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.card = &au1xpsc_sample_ac97_machine,
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.platform = &au1xpsc_soc_platform, /* see dbdma2.c */
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.codec_dev = &soc_codec_dev_ac97,
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};
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static struct resource au1xpsc_psc1_res[] = {
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[0] = {
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.start = CPHYSADDR(PSC1_BASE_ADDR),
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.end = CPHYSADDR(PSC1_BASE_ADDR) + 0x000fffff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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#ifdef CONFIG_SOC_AU1200
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.start = AU1200_PSC1_INT,
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.end = AU1200_PSC1_INT,
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#elif defined(CONFIG_SOC_AU1550)
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.start = AU1550_PSC1_INT,
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.end = AU1550_PSC1_INT,
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#endif
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.flags = IORESOURCE_IRQ,
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},
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[2] = {
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.start = DSCR_CMD0_PSC1_TX,
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.end = DSCR_CMD0_PSC1_TX,
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.flags = IORESOURCE_DMA,
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},
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[3] = {
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.start = DSCR_CMD0_PSC1_RX,
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.end = DSCR_CMD0_PSC1_RX,
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.flags = IORESOURCE_DMA,
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},
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};
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static struct platform_device *au1xpsc_sample_ac97_dev;
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static int __init au1xpsc_sample_ac97_load(void)
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{
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int ret;
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#ifdef CONFIG_SOC_AU1200
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unsigned long io;
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/* modify sys_pinfunc for AC97 on PSC1 */
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io = au_readl(SYS_PINFUNC);
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io |= SYS_PINFUNC_P1C;
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io &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B);
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au_writel(io, SYS_PINFUNC);
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au_sync();
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#endif
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ret = -ENOMEM;
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/* setup PSC clock source for AC97 part: external clock provided
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* by codec. The psc-ac97.c driver depends on this setting!
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*/
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au_writel(PSC_SEL_CLK_SERCLK, PSC1_BASE_ADDR + PSC_SEL_OFFSET);
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au_sync();
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au1xpsc_sample_ac97_dev = platform_device_alloc("soc-audio", -1);
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if (!au1xpsc_sample_ac97_dev)
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goto out;
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au1xpsc_sample_ac97_dev->resource =
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kmemdup(au1xpsc_psc1_res, sizeof(struct resource) *
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ARRAY_SIZE(au1xpsc_psc1_res), GFP_KERNEL);
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au1xpsc_sample_ac97_dev->num_resources = ARRAY_SIZE(au1xpsc_psc1_res);
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au1xpsc_sample_ac97_dev->id = 1;
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platform_set_drvdata(au1xpsc_sample_ac97_dev,
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&au1xpsc_sample_ac97_devdata);
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au1xpsc_sample_ac97_devdata.dev = &au1xpsc_sample_ac97_dev->dev;
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ret = platform_device_add(au1xpsc_sample_ac97_dev);
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if (ret) {
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platform_device_put(au1xpsc_sample_ac97_dev);
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au1xpsc_sample_ac97_dev = NULL;
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}
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out:
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return ret;
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}
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static void __exit au1xpsc_sample_ac97_exit(void)
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{
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platform_device_unregister(au1xpsc_sample_ac97_dev);
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}
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module_init(au1xpsc_sample_ac97_load);
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module_exit(au1xpsc_sample_ac97_exit);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Au1xxx PSC sample AC97 machine");
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MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");
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