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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>
146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*
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* snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
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*
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* Copyright (C) 2008 Bluewater Systems Ltd
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* Author: Ryan Mallon
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/platform_device.h>
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#include <linux/module.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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#include "../codecs/tlv320aic23.h"
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#define CODEC_CLOCK 5644800
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static int snappercl15_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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int err;
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err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
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SND_SOC_CLOCK_IN);
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if (err)
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return err;
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err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
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SND_SOC_CLOCK_OUT);
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if (err)
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return err;
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return 0;
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}
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static struct snd_soc_ops snappercl15_ops = {
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.hw_params = snappercl15_hw_params,
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};
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static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_LINE("Line In", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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};
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static const struct snd_soc_dapm_route audio_map[] = {
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{"Headphone Jack", NULL, "LHPOUT"},
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{"Headphone Jack", NULL, "RHPOUT"},
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{"LLINEIN", NULL, "Line In"},
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{"RLINEIN", NULL, "Line In"},
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{"MICIN", NULL, "Mic Jack"},
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};
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static int snappercl15_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_codec *codec = rtd->codec;
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
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ARRAY_SIZE(tlv320aic23_dapm_widgets));
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snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
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return 0;
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}
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static struct snd_soc_dai_link snappercl15_dai = {
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.name = "tlv320aic23",
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.stream_name = "AIC23",
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.cpu_dai_name = "ep93xx-i2s",
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.codec_dai_name = "tlv320aic23-hifi",
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.codec_name = "tlv320aic23-codec.0-001a",
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.platform_name = "ep93xx-pcm-audio",
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.init = snappercl15_tlv320aic23_init,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
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SND_SOC_DAIFMT_CBS_CFS,
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.ops = &snappercl15_ops,
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};
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static struct snd_soc_card snd_soc_snappercl15 = {
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.name = "Snapper CL15",
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.owner = THIS_MODULE,
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.dai_link = &snappercl15_dai,
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.num_links = 1,
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};
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static int snappercl15_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &snd_soc_snappercl15;
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int ret;
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ret = ep93xx_i2s_acquire();
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if (ret)
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return ret;
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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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ep93xx_i2s_release();
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}
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return ret;
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}
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static int snappercl15_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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ep93xx_i2s_release();
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return 0;
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}
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static struct platform_driver snappercl15_driver = {
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.driver = {
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.name = "snappercl15-audio",
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.owner = THIS_MODULE,
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},
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.probe = snappercl15_probe,
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.remove = snappercl15_remove,
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};
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module_platform_driver(snappercl15_driver);
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MODULE_AUTHOR("Ryan Mallon");
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MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:snappercl15-audio");
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