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347 lines
8.2 KiB
347 lines
8.2 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// Littlemill audio support |
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// |
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// Copyright 2011 Wolfson Microelectronics |
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#include <sound/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/jack.h> |
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#include <linux/gpio.h> |
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#include <linux/module.h> |
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#include "../codecs/wm8994.h" |
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static int sample_rate = 44100; |
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static int littlemill_set_bias_level(struct snd_soc_card *card, |
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struct snd_soc_dapm_context *dapm, |
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enum snd_soc_bias_level level) |
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{ |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_dai *aif1_dai; |
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int ret; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
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aif1_dai = asoc_rtd_to_codec(rtd, 0); |
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if (dapm->dev != aif1_dai->dev) |
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return 0; |
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switch (level) { |
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case SND_SOC_BIAS_PREPARE: |
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/* |
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* If we've not already clocked things via hw_params() |
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* then do so now, otherwise these are noops. |
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*/ |
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if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { |
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ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, |
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WM8994_FLL_SRC_MCLK2, 32768, |
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sample_rate * 512); |
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if (ret < 0) { |
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pr_err("Failed to start FLL: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_sysclk(aif1_dai, |
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WM8994_SYSCLK_FLL1, |
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sample_rate * 512, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err("Failed to set SYSCLK: %d\n", ret); |
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return ret; |
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} |
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} |
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break; |
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default: |
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break; |
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} |
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return 0; |
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} |
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static int littlemill_set_bias_level_post(struct snd_soc_card *card, |
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struct snd_soc_dapm_context *dapm, |
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enum snd_soc_bias_level level) |
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{ |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_dai *aif1_dai; |
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int ret; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
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aif1_dai = asoc_rtd_to_codec(rtd, 0); |
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if (dapm->dev != aif1_dai->dev) |
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return 0; |
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switch (level) { |
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case SND_SOC_BIAS_STANDBY: |
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ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, |
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32768, SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err("Failed to switch away from FLL1: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, |
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0, 0, 0); |
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if (ret < 0) { |
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pr_err("Failed to stop FLL1: %d\n", ret); |
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return ret; |
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} |
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break; |
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default: |
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break; |
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} |
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dapm->bias_level = level; |
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return 0; |
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} |
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static int littlemill_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 = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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int ret; |
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sample_rate = params_rate(params); |
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ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, |
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WM8994_FLL_SRC_MCLK2, 32768, |
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sample_rate * 512); |
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if (ret < 0) { |
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pr_err("Failed to start FLL: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_sysclk(codec_dai, |
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WM8994_SYSCLK_FLL1, |
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sample_rate * 512, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err("Failed to set SYSCLK: %d\n", ret); |
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return ret; |
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} |
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return 0; |
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} |
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static const struct snd_soc_ops littlemill_ops = { |
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.hw_params = littlemill_hw_params, |
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}; |
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static const struct snd_soc_pcm_stream baseband_params = { |
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.formats = SNDRV_PCM_FMTBIT_S32_LE, |
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.rate_min = 8000, |
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.rate_max = 8000, |
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.channels_min = 2, |
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.channels_max = 2, |
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}; |
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SND_SOC_DAILINK_DEFS(cpu, |
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DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); |
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SND_SOC_DAILINK_DEFS(baseband, |
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DAILINK_COMP_ARRAY(COMP_CPU("wm8994-aif2")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", |
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"wm1250-ev1"))); |
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static struct snd_soc_dai_link littlemill_dai[] = { |
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{ |
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.name = "CPU", |
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.stream_name = "CPU", |
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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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.ops = &littlemill_ops, |
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SND_SOC_DAILINK_REG(cpu), |
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}, |
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{ |
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.name = "Baseband", |
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.stream_name = "Baseband", |
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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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.ignore_suspend = 1, |
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.params = &baseband_params, |
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SND_SOC_DAILINK_REG(baseband), |
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}, |
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}; |
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static int bbclk_ev(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event) |
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{ |
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struct snd_soc_card *card = w->dapm->card; |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_dai *aif2_dai; |
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int ret; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]); |
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aif2_dai = asoc_rtd_to_cpu(rtd, 0); |
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switch (event) { |
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case SND_SOC_DAPM_PRE_PMU: |
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ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2, |
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WM8994_FLL_SRC_BCLK, 64 * 8000, |
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8000 * 256); |
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if (ret < 0) { |
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pr_err("Failed to start FLL: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2, |
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8000 * 256, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err("Failed to set SYSCLK: %d\n", ret); |
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return ret; |
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} |
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break; |
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case SND_SOC_DAPM_POST_PMD: |
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ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2, |
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32768, SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err("Failed to switch away from FLL2: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2, |
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0, 0, 0); |
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if (ret < 0) { |
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pr_err("Failed to stop FLL2: %d\n", ret); |
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return ret; |
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} |
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break; |
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default: |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static const struct snd_kcontrol_new controls[] = { |
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SOC_DAPM_PIN_SWITCH("WM1250 Input"), |
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SOC_DAPM_PIN_SWITCH("WM1250 Output"), |
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}; |
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static const struct snd_soc_dapm_widget widgets[] = { |
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SND_SOC_DAPM_HP("Headphone", NULL), |
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SND_SOC_DAPM_MIC("AMIC", NULL), |
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SND_SOC_DAPM_MIC("DMIC", NULL), |
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SND_SOC_DAPM_SUPPLY_S("Baseband Clock", -1, SND_SOC_NOPM, 0, 0, |
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bbclk_ev, |
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), |
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}; |
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static const struct snd_soc_dapm_route audio_paths[] = { |
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{ "Headphone", NULL, "HPOUT1L" }, |
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{ "Headphone", NULL, "HPOUT1R" }, |
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{ "AMIC", NULL, "MICBIAS1" }, /* Default for AMICBIAS jumper */ |
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{ "IN1LN", NULL, "AMIC" }, |
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{ "DMIC", NULL, "MICBIAS2" }, /* Default for DMICBIAS jumper */ |
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{ "DMIC1DAT", NULL, "DMIC" }, |
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{ "DMIC2DAT", NULL, "DMIC" }, |
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{ "AIF2CLK", NULL, "Baseband Clock" }, |
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}; |
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static struct snd_soc_jack littlemill_headset; |
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static int littlemill_late_probe(struct snd_soc_card *card) |
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{ |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_component *component; |
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struct snd_soc_dai *aif1_dai; |
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struct snd_soc_dai *aif2_dai; |
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int ret; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
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component = asoc_rtd_to_codec(rtd, 0)->component; |
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aif1_dai = asoc_rtd_to_codec(rtd, 0); |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]); |
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aif2_dai = asoc_rtd_to_cpu(rtd, 0); |
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ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, |
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32768, SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2, |
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32768, SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_card_jack_new(card, "Headset", |
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SND_JACK_HEADSET | SND_JACK_MECHANICAL | |
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SND_JACK_BTN_0 | SND_JACK_BTN_1 | |
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SND_JACK_BTN_2 | SND_JACK_BTN_3 | |
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SND_JACK_BTN_4 | SND_JACK_BTN_5, |
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&littlemill_headset); |
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if (ret) |
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return ret; |
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/* This will check device compatibility itself */ |
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wm8958_mic_detect(component, &littlemill_headset, NULL, NULL, NULL, NULL); |
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/* As will this */ |
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wm8994_mic_detect(component, &littlemill_headset, 1); |
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return 0; |
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} |
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static struct snd_soc_card littlemill = { |
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.name = "Littlemill", |
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.owner = THIS_MODULE, |
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.dai_link = littlemill_dai, |
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.num_links = ARRAY_SIZE(littlemill_dai), |
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.set_bias_level = littlemill_set_bias_level, |
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.set_bias_level_post = littlemill_set_bias_level_post, |
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.controls = controls, |
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.num_controls = ARRAY_SIZE(controls), |
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.dapm_widgets = widgets, |
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.num_dapm_widgets = ARRAY_SIZE(widgets), |
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.dapm_routes = audio_paths, |
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.num_dapm_routes = ARRAY_SIZE(audio_paths), |
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.late_probe = littlemill_late_probe, |
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}; |
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static int littlemill_probe(struct platform_device *pdev) |
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{ |
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struct snd_soc_card *card = &littlemill; |
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int ret; |
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card->dev = &pdev->dev; |
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ret = devm_snd_soc_register_card(&pdev->dev, card); |
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if (ret) |
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dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n"); |
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return ret; |
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} |
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static struct platform_driver littlemill_driver = { |
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.driver = { |
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.name = "littlemill", |
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.pm = &snd_soc_pm_ops, |
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}, |
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.probe = littlemill_probe, |
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}; |
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module_platform_driver(littlemill_driver); |
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MODULE_DESCRIPTION("Littlemill audio support"); |
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MODULE_AUTHOR("Mark Brown <[email protected]>"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:littlemill");
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