/* * arndale_rt5631.c * * Copyright (c) 2014, Insignal Co., Ltd. * * Author: Claude * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include #include #include #include #include #include #include #include "i2s.h" static int arndale_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; int rfs, ret; unsigned long rclk; rfs = 256; rclk = params_rate(params) * rfs; ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK, 0, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0, 0, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; return 0; } static struct snd_soc_ops arndale_ops = { .hw_params = arndale_hw_params, }; static struct snd_soc_dai_link arndale_rt5631_dai[] = { { .name = "RT5631 HiFi", .stream_name = "Primary", .codec_dai_name = "rt5631-hifi", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS, .ops = &arndale_ops, }, }; static struct snd_soc_card arndale_rt5631 = { .name = "Arndale RT5631", .owner = THIS_MODULE, .dai_link = arndale_rt5631_dai, .num_links = ARRAY_SIZE(arndale_rt5631_dai), }; static int arndale_audio_probe(struct platform_device *pdev) { int n, ret; struct device_node *np = pdev->dev.of_node; struct snd_soc_card *card = &arndale_rt5631; card->dev = &pdev->dev; for (n = 0; np && n < ARRAY_SIZE(arndale_rt5631_dai); n++) { if (!arndale_rt5631_dai[n].cpu_dai_name) { arndale_rt5631_dai[n].cpu_of_node = of_parse_phandle(np, "samsung,audio-cpu", n); if (!arndale_rt5631_dai[n].cpu_of_node) { dev_err(&pdev->dev, "Property 'samsung,audio-cpu' missing or invalid\n"); return -EINVAL; } } if (!arndale_rt5631_dai[n].platform_name) arndale_rt5631_dai[n].platform_of_node = arndale_rt5631_dai[n].cpu_of_node; arndale_rt5631_dai[n].codec_name = NULL; arndale_rt5631_dai[n].codec_of_node = of_parse_phandle(np, "samsung,audio-codec", n); if (!arndale_rt5631_dai[0].codec_of_node) { dev_err(&pdev->dev, "Property 'samsung,audio-codec' missing or invalid\n"); return -EINVAL; } } ret = devm_snd_soc_register_card(card->dev, card); if (ret) dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); return ret; } static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = { { .compatible = "samsung,arndale-rt5631", }, { .compatible = "samsung,arndale-alc5631", }, {}, }; MODULE_DEVICE_TABLE(of, samsung_arndale_rt5631_of_match); static struct platform_driver arndale_audio_driver = { .driver = { .name = "arndale-audio", .pm = &snd_soc_pm_ops, .of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match), }, .probe = arndale_audio_probe, }; module_platform_driver(arndale_audio_driver); MODULE_AUTHOR("Claude "); MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board"); MODULE_LICENSE("GPL"); space:mode:

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1 files changed, 20 insertions, 2 deletions