/* * Speyside with WM8962 audio support * * Copyright 2011 Wolfson Microelectronics * * 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 "../codecs/wm8962.h" static int sample_rate = 44100; static int speyside_wm8962_set_bias_level(struct snd_soc_card *card, struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) { struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; int ret; if (dapm->dev != codec_dai->dev) return 0; switch (level) { case SND_SOC_BIAS_PREPARE: if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, WM8962_FLL_MCLK, 32768, sample_rate * 512); if (ret < 0) pr_err("Failed to start FLL: %d\n", ret); ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_FLL, sample_rate * 512, SND_SOC_CLOCK_IN); if (ret < 0) { pr_err("Failed to set SYSCLK: %d\n", ret); return ret; } } break; default: break; } return 0; } static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card, struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) { struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; int ret; if (dapm->dev != codec_dai->dev) return 0; switch (level) { case SND_SOC_BIAS_STANDBY: ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, 32768, SND_SOC_CLOCK_IN); if (ret < 0) { pr_err("Failed to switch away from FLL: %d\n", ret); return ret; } ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, 0, 0, 0); if (ret < 0) { pr_err("Failed to stop FLL: %d\n", ret); return ret; } break; default: break; } dapm->bias_level = level; return 0; } static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { sample_rate = params_rate(params); return 0; } static struct snd_soc_ops speyside_wm8962_ops = { .hw_params = speyside_wm8962_hw_params, }; static struct snd_soc_dai_link speyside_wm8962_dai[] = { { .name = "CPU", .stream_name = "CPU", .cpu_dai_name = "samsung-i2s.0", .codec_dai_name = "wm8962", .platform_name = "samsung-audio", .codec_name = "wm8962.1-001a", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM, .ops = &speyside_wm8962_ops, }, }; static const struct snd_kcontrol_new controls[] = { SOC_DAPM_PIN_SWITCH("Main Speaker"), SOC_DAPM_PIN_SWITCH("DMIC"), }; static struct snd_soc_dapm_widget widgets[] = { SND_SOC_DAPM_HP("Headphone", NULL), SND_SOC_DAPM_MIC("Headset Mic", NULL), SND_SOC_DAPM_MIC("DMIC", NULL), SND_SOC_DAPM_MIC("AMIC", NULL), SND_SOC_DAPM_SPK("Main Speaker", NULL), }; static struct snd_soc_dapm_route audio_paths[] = { { "Headphone", NULL, "HPOUTL" }, { "Headphone", NULL, "HPOUTR" }, { "Main Speaker", NULL, "SPKOUTL" }, { "Main Speaker", NULL, "SPKOUTR" }, { "Headset Mic", NULL, "MICBIAS" }, { "IN4L", NULL, "Headset Mic" }, { "IN4R", NULL, "Headset Mic" }, { "AMIC", NULL, "MICBIAS" }, { "IN1L", NULL, "AMIC" }, { "IN1R", NULL, "AMIC" }, { "DMIC", NULL, "MICBIAS" }, { "DMICDAT", NULL, "DMIC" }, }; static struct snd_soc_jack speyside_wm8962_headset; /* Headset jack detection DAPM pins */ static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = { { .pin = "Headset Mic", .mask = SND_JACK_MICROPHONE, }, { .pin = "Headphone", .mask = SND_JACK_MICROPHONE, }, }; static int speyside_wm8962_late_probe(struct snd_soc_card *card) { struct snd_soc_codec *codec = card->rtd[0].codec; struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; int ret; ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, 32768, SND_SOC_CLOCK_IN); if (ret < 0) return ret; ret = snd_soc_jack_new(codec, "Headset", SND_JACK_HEADSET | SND_JACK_BTN_0, &speyside_wm8962_headset); if (ret) return ret; ret = snd_soc_jack_add_pins(&speyside_wm8962_headset, ARRAY_SIZE(speyside_wm8962_headset_pins), speyside_wm8962_headset_pins); if (ret) return ret; wm8962_mic_detect(codec, &speyside_wm8962_headset); return 0; } static struct snd_soc_card speyside_wm8962 = { .name = "Speyside WM8962", .dai_link = speyside_wm8962_dai, .num_links = ARRAY_SIZE(speyside_wm8962_dai), .set_bias_level = speyside_wm8962_set_bias_level, .set_bias_level_post = speyside_wm8962_set_bias_level_post, .controls = controls, .num_controls = ARRAY_SIZE(controls), .dapm_widgets = widgets, .num_dapm_widgets = ARRAY_SIZE(widgets), .dapm_routes = audio_paths, .num_dapm_routes = ARRAY_SIZE(audio_paths), .late_probe = speyside_wm8962_late_probe, }; static __devinit int speyside_wm8962_probe(struct platform_device *pdev) { struct snd_soc_card *card = &speyside_wm8962; int ret; card->dev = &pdev->dev; ret = snd_soc_register_card(card); if (ret) { dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); return ret; } return 0; } static int __devexit speyside_wm8962_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); snd_soc_unregister_card(card); return 0; } static struct platform_driver speyside_wm8962_driver = { .driver = { .name = "speyside-wm8962", .owner = THIS_MODULE, .pm = &snd_soc_pm_ops, }, .probe = speyside_wm8962_probe, .remove = __devexit_p(speyside_wm8962_remove), }; static int __init speyside_wm8962_audio_init(void) { return platform_driver_register(&speyside_wm8962_driver); } module_init(speyside_wm8962_audio_init); static void __exit speyside_wm8962_audio_exit(void) { platform_driver_unregister(&speyside_wm8962_driver); } module_exit(speyside_wm8962_audio_exit); MODULE_DESCRIPTION("Speyside WM8962 audio support"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:speyside-wm8962");