| /* |
| * Tobermory 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 <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/jack.h> |
| #include <linux/gpio.h> |
| #include <linux/module.h> |
| |
| #include "../codecs/wm8962.h" |
| |
| static int sample_rate = 44100; |
| |
| static int tobermory_set_bias_level(struct snd_soc_card *card, |
| struct snd_soc_dapm_context *dapm, |
| enum snd_soc_bias_level level) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_dai *codec_dai; |
| int ret; |
| |
| rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| codec_dai = rtd->codec_dai; |
| |
| 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); |
| snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
| 0, 0, 0); |
| return ret; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int tobermory_set_bias_level_post(struct snd_soc_card *card, |
| struct snd_soc_dapm_context *dapm, |
| enum snd_soc_bias_level level) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_dai *codec_dai; |
| int ret; |
| |
| rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| codec_dai = rtd->codec_dai; |
| |
| 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 tobermory_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 tobermory_ops = { |
| .hw_params = tobermory_hw_params, |
| }; |
| |
| static struct snd_soc_dai_link tobermory_dai[] = { |
| { |
| .name = "CPU", |
| .stream_name = "CPU", |
| .cpu_dai_name = "samsung-i2s.0", |
| .codec_dai_name = "wm8962", |
| .platform_name = "samsung-i2s.0", |
| .codec_name = "wm8962.1-001a", |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
| | SND_SOC_DAIFMT_CBM_CFM, |
| .ops = &tobermory_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 tobermory_headset; |
| |
| /* Headset jack detection DAPM pins */ |
| static struct snd_soc_jack_pin tobermory_headset_pins[] = { |
| { |
| .pin = "Headset Mic", |
| .mask = SND_JACK_MICROPHONE, |
| }, |
| { |
| .pin = "Headphone", |
| .mask = SND_JACK_MICROPHONE, |
| }, |
| }; |
| |
| static int tobermory_late_probe(struct snd_soc_card *card) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_codec *codec; |
| struct snd_soc_dai *codec_dai; |
| int ret; |
| |
| rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); |
| codec = rtd->codec; |
| codec_dai = rtd->codec_dai; |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, |
| 32768, SND_SOC_CLOCK_IN); |
| if (ret < 0) |
| return ret; |
| |
| ret = snd_soc_card_jack_new(card, "Headset", SND_JACK_HEADSET | |
| SND_JACK_BTN_0, &tobermory_headset, |
| tobermory_headset_pins, |
| ARRAY_SIZE(tobermory_headset_pins)); |
| if (ret) |
| return ret; |
| |
| wm8962_mic_detect(codec, &tobermory_headset); |
| |
| return 0; |
| } |
| |
| static struct snd_soc_card tobermory = { |
| .name = "Tobermory", |
| .owner = THIS_MODULE, |
| .dai_link = tobermory_dai, |
| .num_links = ARRAY_SIZE(tobermory_dai), |
| |
| .set_bias_level = tobermory_set_bias_level, |
| .set_bias_level_post = tobermory_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), |
| .fully_routed = true, |
| |
| .late_probe = tobermory_late_probe, |
| }; |
| |
| static int tobermory_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = &tobermory; |
| int ret; |
| |
| card->dev = &pdev->dev; |
| |
| ret = devm_snd_soc_register_card(&pdev->dev, card); |
| if (ret) |
| dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
| ret); |
| |
| return ret; |
| } |
| |
| static struct platform_driver tobermory_driver = { |
| .driver = { |
| .name = "tobermory", |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = tobermory_probe, |
| }; |
| |
| module_platform_driver(tobermory_driver); |
| |
| MODULE_DESCRIPTION("Tobermory audio support"); |
| MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:tobermory"); |