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1// SPDX-License-Identifier: GPL-2.0+2 3#include "../codecs/wm8994.h"4#include <sound/pcm_params.h>5#include <sound/soc.h>6#include <linux/module.h>7#include <linux/of.h>8 9 /*10 * Default CFG switch settings to use this driver:11 * SMDKV310: CFG5-1000, CFG7-11111112 */13 14 /*15 * Configure audio route as :-16 * $ amixer sset 'DAC1' on,on17 * $ amixer sset 'Right Headphone Mux' 'DAC'18 * $ amixer sset 'Left Headphone Mux' 'DAC'19 * $ amixer sset 'DAC1R Mixer AIF1.1' on20 * $ amixer sset 'DAC1L Mixer AIF1.1' on21 * $ amixer sset 'IN2L' on22 * $ amixer sset 'IN2L PGA IN2LN' on23 * $ amixer sset 'MIXINL IN2L' on24 * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on25 * $ amixer sset 'IN2R' on26 * $ amixer sset 'IN2R PGA IN2RN' on27 * $ amixer sset 'MIXINR IN2R' on28 * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on29 */30 31/* SMDK has a 16.934MHZ crystal attached to WM8994 */32#define SMDK_WM8994_FREQ 1693400033 34static int smdk_hw_params(struct snd_pcm_substream *substream,35 struct snd_pcm_hw_params *params)36{37 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);38 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);39 unsigned int pll_out;40 int ret;41 42 /* AIF1CLK should be >=3MHz for optimal performance */43 if (params_width(params) == 24)44 pll_out = params_rate(params) * 384;45 else if (params_rate(params) == 8000 || params_rate(params) == 11025)46 pll_out = params_rate(params) * 512;47 else48 pll_out = params_rate(params) * 256;49 50 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,51 SMDK_WM8994_FREQ, pll_out);52 if (ret < 0)53 return ret;54 55 ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,56 pll_out, SND_SOC_CLOCK_IN);57 if (ret < 0)58 return ret;59 60 return 0;61}62 63/*64 * SMDK WM8994 DAI operations.65 */66static const struct snd_soc_ops smdk_ops = {67 .hw_params = smdk_hw_params,68};69 70static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)71{72 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;73 74 /* Other pins NC */75 snd_soc_dapm_nc_pin(dapm, "HPOUT2P");76 snd_soc_dapm_nc_pin(dapm, "HPOUT2N");77 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");78 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");79 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");80 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");81 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");82 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");83 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");84 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");85 snd_soc_dapm_nc_pin(dapm, "IN1LP");86 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");87 snd_soc_dapm_nc_pin(dapm, "IN1RP");88 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");89 90 return 0;91}92 93SND_SOC_DAILINK_DEFS(aif1,94 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),95 DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),96 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));97 98SND_SOC_DAILINK_DEFS(fifo_tx,99 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),100 DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),101 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));102 103static struct snd_soc_dai_link smdk_dai[] = {104 { /* Primary DAI i/f */105 .name = "WM8994 AIF1",106 .stream_name = "Pri_Dai",107 .init = smdk_wm8994_init_paiftx,108 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |109 SND_SOC_DAIFMT_CBM_CFM,110 .ops = &smdk_ops,111 SND_SOC_DAILINK_REG(aif1),112 }, { /* Sec_Fifo Playback i/f */113 .name = "Sec_FIFO TX",114 .stream_name = "Sec_Dai",115 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |116 SND_SOC_DAIFMT_CBM_CFM,117 .ops = &smdk_ops,118 SND_SOC_DAILINK_REG(fifo_tx),119 },120};121 122static struct snd_soc_card smdk = {123 .name = "SMDK-I2S",124 .owner = THIS_MODULE,125 .dai_link = smdk_dai,126 .num_links = ARRAY_SIZE(smdk_dai),127};128 129static const struct of_device_id samsung_wm8994_of_match[] = {130 { .compatible = "samsung,smdk-wm8994" },131 {},132};133MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);134 135static int smdk_audio_probe(struct platform_device *pdev)136{137 int ret;138 struct device_node *np = pdev->dev.of_node;139 struct snd_soc_card *card = &smdk;140 141 card->dev = &pdev->dev;142 143 if (np) {144 smdk_dai[0].cpus->dai_name = NULL;145 smdk_dai[0].cpus->of_node = of_parse_phandle(np,146 "samsung,i2s-controller", 0);147 if (!smdk_dai[0].cpus->of_node) {148 dev_err(&pdev->dev,149 "Property 'samsung,i2s-controller' missing or invalid\n");150 ret = -EINVAL;151 return ret;152 }153 154 smdk_dai[0].platforms->name = NULL;155 smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;156 }157 158 ret = devm_snd_soc_register_card(&pdev->dev, card);159 160 if (ret)161 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");162 163 return ret;164}165 166static struct platform_driver smdk_audio_driver = {167 .driver = {168 .name = "smdk-audio-wm8994",169 .of_match_table = samsung_wm8994_of_match,170 .pm = &snd_soc_pm_ops,171 },172 .probe = smdk_audio_probe,173};174 175module_platform_driver(smdk_audio_driver);176 177MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");178MODULE_LICENSE("GPL");179MODULE_ALIAS("platform:smdk-audio-wm8994");180