2019-04-19 13:21:43 +03:00
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// 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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2011-11-29 02:05:41 +04:00
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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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2015-11-18 10:34:01 +03:00
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struct snd_soc_pcm_runtime *rtd;
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struct snd_soc_dai *aif1_dai;
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2011-11-29 02:05:41 +04:00
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int ret;
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2015-11-18 10:34:01 +03:00
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rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
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aif1_dai = rtd->codec_dai;
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2012-04-18 21:20:05 +04:00
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if (dapm->dev != aif1_dai->dev)
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2011-11-29 02:05:41 +04:00
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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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2012-04-18 21:20:05 +04:00
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ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
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2011-11-29 02:05:41 +04:00
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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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2012-04-18 21:20:05 +04:00
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ret = snd_soc_dai_set_sysclk(aif1_dai,
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2011-11-29 02:05:41 +04:00
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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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2015-11-18 10:34:01 +03:00
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struct snd_soc_pcm_runtime *rtd;
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struct snd_soc_dai *aif1_dai;
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2011-11-29 02:05:41 +04:00
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int ret;
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2015-11-18 10:34:01 +03:00
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rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
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aif1_dai = rtd->codec_dai;
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2012-04-18 21:20:05 +04:00
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if (dapm->dev != aif1_dai->dev)
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2011-11-29 02:05:41 +04:00
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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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2012-04-18 21:20:05 +04:00
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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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2011-11-29 02:05:41 +04:00
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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 = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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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 struct snd_soc_ops littlemill_ops = {
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.hw_params = littlemill_hw_params,
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};
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2012-04-18 21:20:05 +04:00
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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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2019-06-06 07:10:41 +03:00
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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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2011-11-29 02:05:41 +04:00
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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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2019-06-06 07:10:41 +03:00
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SND_SOC_DAILINK_REG(cpu),
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2011-11-29 02:05:41 +04:00
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},
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2012-04-18 21:20:05 +04:00
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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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2019-06-06 07:10:41 +03:00
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SND_SOC_DAILINK_REG(baseband),
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2012-04-18 21:20:05 +04:00
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},
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2011-11-29 02:05:41 +04:00
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};
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2012-05-12 15:35:44 +04:00
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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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2015-11-18 10:34:01 +03:00
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struct snd_soc_pcm_runtime *rtd;
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struct snd_soc_dai *aif2_dai;
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2012-05-12 15:35:44 +04:00
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int ret;
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2015-11-18 10:34:01 +03:00
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rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
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aif2_dai = rtd->cpu_dai;
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2012-05-12 15:35:44 +04:00
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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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2012-07-18 22:16:06 +04:00
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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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2011-11-29 02:05:41 +04:00
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static struct snd_soc_dapm_widget widgets[] = {
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SND_SOC_DAPM_HP("Headphone", NULL),
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2011-12-02 21:36:06 +04:00
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SND_SOC_DAPM_MIC("AMIC", NULL),
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SND_SOC_DAPM_MIC("DMIC", NULL),
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2012-05-12 15:35:44 +04:00
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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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2011-11-29 02:05:41 +04:00
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};
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static 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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2011-12-02 21:36:06 +04:00
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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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2012-05-12 15:35:44 +04:00
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{ "AIF2CLK", NULL, "Baseband Clock" },
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2011-11-29 02:05:41 +04:00
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};
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2011-12-02 19:55:52 +04:00
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static struct snd_soc_jack littlemill_headset;
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2011-11-29 02:05:41 +04:00
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static int littlemill_late_probe(struct snd_soc_card *card)
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{
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2015-11-18 10:34:01 +03:00
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struct snd_soc_pcm_runtime *rtd;
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2018-01-29 06:12:21 +03:00
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struct snd_soc_component *component;
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2015-11-18 10:34:01 +03:00
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struct snd_soc_dai *aif1_dai;
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struct snd_soc_dai *aif2_dai;
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2011-11-29 02:05:41 +04:00
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int ret;
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2015-11-18 10:34:01 +03:00
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rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
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2018-01-29 06:12:21 +03:00
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component = rtd->codec_dai->component;
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2015-11-18 10:34:01 +03:00
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aif1_dai = rtd->codec_dai;
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rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
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aif2_dai = rtd->cpu_dai;
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2012-04-18 21:20:05 +04:00
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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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2011-11-29 02:05:41 +04:00
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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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2015-03-04 12:33:34 +03:00
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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, NULL, 0);
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2011-12-02 19:55:52 +04:00
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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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2018-01-29 06:12:21 +03:00
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wm8958_mic_detect(component, &littlemill_headset, NULL, NULL, NULL, NULL);
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2011-12-02 19:55:52 +04:00
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2012-02-03 17:15:18 +04:00
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/* As will this */
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2018-01-29 06:12:21 +03:00
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wm8994_mic_detect(component, &littlemill_headset, 1);
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2012-02-03 17:15:18 +04:00
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2011-11-29 02:05:41 +04:00
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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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2011-12-22 06:53:15 +04:00
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.owner = THIS_MODULE,
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2011-11-29 02:05:41 +04:00
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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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2012-07-18 22:16:06 +04:00
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.controls = controls,
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.num_controls = ARRAY_SIZE(controls),
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2011-11-29 02:05:41 +04:00
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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),
|
|
|
|
|
|
|
|
.late_probe = littlemill_late_probe,
|
|
|
|
};
|
|
|
|
|
2012-12-07 18:26:15 +04:00
|
|
|
static int littlemill_probe(struct platform_device *pdev)
|
2011-11-29 02:05:41 +04:00
|
|
|
{
|
|
|
|
struct snd_soc_card *card = &littlemill;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
card->dev = &pdev->dev;
|
|
|
|
|
2014-05-21 07:22:17 +04:00
|
|
|
ret = devm_snd_soc_register_card(&pdev->dev, card);
|
|
|
|
if (ret)
|
2011-11-29 02:05:41 +04:00
|
|
|
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
|
|
|
|
ret);
|
|
|
|
|
2014-05-21 07:22:17 +04:00
|
|
|
return ret;
|
2011-11-29 02:05:41 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver littlemill_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "littlemill",
|
|
|
|
.pm = &snd_soc_pm_ops,
|
|
|
|
},
|
|
|
|
.probe = littlemill_probe,
|
|
|
|
};
|
|
|
|
|
|
|
|
module_platform_driver(littlemill_driver);
|
|
|
|
|
|
|
|
MODULE_DESCRIPTION("Littlemill audio support");
|
|
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_ALIAS("platform:littlemill");
|