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https://github.com/torvalds/linux
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3316fd2554
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/*
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* Machine driver for EVAL-ADAU1x61MINIZ on Analog Devices bfin
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* evaluation boards.
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*
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* Copyright 2011-2014 Analog Devices Inc.
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* Author: Lars-Peter Clausen <lars@metafoo.de>
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/slab.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/pcm_params.h>
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#include "../codecs/adau17x1.h"
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static const struct snd_soc_dapm_widget bfin_eval_adau1x61_dapm_widgets[] = {
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SND_SOC_DAPM_LINE("In 1", NULL),
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SND_SOC_DAPM_LINE("In 2", NULL),
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SND_SOC_DAPM_LINE("In 3-4", NULL),
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SND_SOC_DAPM_LINE("Diff Out L", NULL),
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SND_SOC_DAPM_LINE("Diff Out R", NULL),
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SND_SOC_DAPM_LINE("Stereo Out", NULL),
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SND_SOC_DAPM_HP("Capless HP Out", NULL),
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};
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static const struct snd_soc_dapm_route bfin_eval_adau1x61_dapm_routes[] = {
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{ "LAUX", NULL, "In 3-4" },
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{ "RAUX", NULL, "In 3-4" },
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{ "LINP", NULL, "In 1" },
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{ "LINN", NULL, "In 1"},
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{ "RINP", NULL, "In 2" },
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{ "RINN", NULL, "In 2" },
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{ "In 1", NULL, "MICBIAS" },
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{ "In 2", NULL, "MICBIAS" },
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{ "Capless HP Out", NULL, "LHP" },
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{ "Capless HP Out", NULL, "RHP" },
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{ "Diff Out L", NULL, "LOUT" },
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{ "Diff Out R", NULL, "ROUT" },
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{ "Stereo Out", NULL, "LOUT" },
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{ "Stereo Out", NULL, "ROUT" },
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};
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static int bfin_eval_adau1x61_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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int pll_rate;
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int ret;
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switch (params_rate(params)) {
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case 48000:
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case 8000:
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case 12000:
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case 16000:
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case 24000:
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case 32000:
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case 96000:
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pll_rate = 48000 * 1024;
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break;
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case 44100:
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case 7350:
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case 11025:
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case 14700:
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case 22050:
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case 29400:
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case 88200:
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pll_rate = 44100 * 1024;
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break;
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default:
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return -EINVAL;
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}
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ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL,
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ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate);
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if (ret)
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return ret;
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ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate,
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SND_SOC_CLOCK_IN);
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return ret;
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}
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static const struct snd_soc_ops bfin_eval_adau1x61_ops = {
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.hw_params = bfin_eval_adau1x61_hw_params,
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};
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static struct snd_soc_dai_link bfin_eval_adau1x61_dai = {
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.name = "adau1x61",
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.stream_name = "adau1x61",
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.cpu_dai_name = "bfin-i2s.0",
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.codec_dai_name = "adau-hifi",
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.platform_name = "bfin-i2s-pcm-audio",
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.codec_name = "adau1761.0-0038",
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.ops = &bfin_eval_adau1x61_ops,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM,
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};
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static struct snd_soc_card bfin_eval_adau1x61 = {
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.name = "bfin-eval-adau1x61",
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.driver_name = "eval-adau1x61",
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.dai_link = &bfin_eval_adau1x61_dai,
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.num_links = 1,
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.dapm_widgets = bfin_eval_adau1x61_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x61_dapm_widgets),
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.dapm_routes = bfin_eval_adau1x61_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x61_dapm_routes),
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.fully_routed = true,
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};
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static int bfin_eval_adau1x61_probe(struct platform_device *pdev)
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{
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bfin_eval_adau1x61.dev = &pdev->dev;
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return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x61);
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}
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static struct platform_driver bfin_eval_adau1x61_driver = {
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.driver = {
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.name = "bfin-eval-adau1x61",
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.pm = &snd_soc_pm_ops,
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},
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.probe = bfin_eval_adau1x61_probe,
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};
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module_platform_driver(bfin_eval_adau1x61_driver);
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MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
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MODULE_DESCRIPTION("ALSA SoC bfin adau1x61 driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:bfin-eval-adau1x61");
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