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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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453807f300
Currently the ep93xx_dma_params struct which is passed to the dmaengine driver is constructed at runtime from the ep93xx_pcm_dma_params that gets passed to the ep93xx PCM driver from one of the ep93xx DAI drivers. The ep93xx_pcm_dma_params struct is almost identical to the ep93xx_dma_params struct. The only missing field is the 'direction' field, which is computed at runtime in the PCM driver based on the current substream. Since we know in advance which ep93xx_pcm_dma_params struct is being used for which substream at compile time, we also already know which direction to use at compile time. So we can easily replace all instances of ep93xx_pcm_dma_params with their ep93xx_dma_params counterpart. This allows us to simplify the code in the ep93xx pcm driver quite a bit. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Reviewed-by: Ryan Mallon <rmallon@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
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* simone.c -- ASoC audio for Simplemachines Sim.One board
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*
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* Copyright (c) 2010 Mika Westerberg
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*
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* Based on snappercl15 machine driver by Ryan Mallon.
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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 of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/module.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 <asm/mach-types.h>
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#include <mach/hardware.h>
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static struct snd_soc_dai_link simone_dai = {
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.name = "AC97",
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.stream_name = "AC97 HiFi",
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.cpu_dai_name = "ep93xx-ac97",
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.codec_dai_name = "ac97-hifi",
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.codec_name = "ac97-codec",
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.platform_name = "ep93xx-pcm-audio",
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};
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static struct snd_soc_card snd_soc_simone = {
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.name = "Sim.One",
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.owner = THIS_MODULE,
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.dai_link = &simone_dai,
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.num_links = 1,
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};
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static struct platform_device *simone_snd_ac97_device;
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static int simone_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &snd_soc_simone;
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int ret;
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simone_snd_ac97_device = platform_device_register_simple("ac97-codec",
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-1, NULL, 0);
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if (IS_ERR(simone_snd_ac97_device))
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return PTR_ERR(simone_snd_ac97_device);
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card->dev = &pdev->dev;
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
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ret);
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platform_device_unregister(simone_snd_ac97_device);
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}
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return ret;
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}
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static int simone_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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snd_soc_unregister_card(card);
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platform_device_unregister(simone_snd_ac97_device);
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return 0;
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}
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static struct platform_driver simone_driver = {
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.driver = {
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.name = "simone-audio",
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.owner = THIS_MODULE,
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},
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.probe = simone_probe,
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.remove = simone_remove,
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};
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module_platform_driver(simone_driver);
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MODULE_DESCRIPTION("ALSA SoC Simplemachines Sim.One");
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MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:simone-audio");
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