soc/samsung/smdk_wm8994.c

0001 // SPDX-License-Identifier: GPL-2.0+
0002
0003 #include "../codecs/wm8994.h"
0004 #include <sound/pcm_params.h>
0005 #include <sound/soc.h>
0006 #include <linux/module.h>
0007 #include <linux/of.h>
0008 #include <linux/of_device.h>
0009
0010  /*
0011   * Default CFG switch settings to use this driver:
0012   * SMDKV310: CFG5-1000, CFG7-111111
0013   */
0014
0015  /*
0016   * Configure audio route as :-
0017   * $ amixer sset 'DAC1' on,on
0018   * $ amixer sset 'Right Headphone Mux' 'DAC'
0019   * $ amixer sset 'Left Headphone Mux' 'DAC'
0020   * $ amixer sset 'DAC1R Mixer AIF1.1' on
0021   * $ amixer sset 'DAC1L Mixer AIF1.1' on
0022   * $ amixer sset 'IN2L' on
0023   * $ amixer sset 'IN2L PGA IN2LN' on
0024   * $ amixer sset 'MIXINL IN2L' on
0025   * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
0026   * $ amixer sset 'IN2R' on
0027   * $ amixer sset 'IN2R PGA IN2RN' on
0028   * $ amixer sset 'MIXINR IN2R' on
0029   * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
0030   */
0031
0032 /* SMDK has a 16.934MHZ crystal attached to WM8994 */
0033 #define SMDK_WM8994_FREQ 16934000
0034
0035 struct smdk_wm8994_data {
0036     int mclk1_rate;
0037 };
0038
0039 /* Default SMDKs */
0040 static struct smdk_wm8994_data smdk_board_data = {
0041     .mclk1_rate = SMDK_WM8994_FREQ,
0042 };
0043
0044 static int smdk_hw_params(struct snd_pcm_substream *substream,
0045     struct snd_pcm_hw_params *params)
0046 {
0047     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0048     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0049     unsigned int pll_out;
0050     int ret;
0051
0052     /* AIF1CLK should be >=3MHz for optimal performance */
0053     if (params_width(params) == 24)
0054         pll_out = params_rate(params) * 384;
0055     else if (params_rate(params) == 8000 || params_rate(params) == 11025)
0056         pll_out = params_rate(params) * 512;
0057     else
0058         pll_out = params_rate(params) * 256;
0059
0060     ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
0061                     SMDK_WM8994_FREQ, pll_out);
0062     if (ret < 0)
0063         return ret;
0064
0065     ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
0066                     pll_out, SND_SOC_CLOCK_IN);
0067     if (ret < 0)
0068         return ret;
0069
0070     return 0;
0071 }
0072
0073 /*
0074  * SMDK WM8994 DAI operations.
0075  */
0076 static const struct snd_soc_ops smdk_ops = {
0077     .hw_params = smdk_hw_params,
0078 };
0079
0080 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
0081 {
0082     struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
0083
0084     /* Other pins NC */
0085     snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
0086     snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
0087     snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
0088     snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
0089     snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
0090     snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
0091     snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
0092     snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
0093     snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
0094     snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
0095     snd_soc_dapm_nc_pin(dapm, "IN1LP");
0096     snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
0097     snd_soc_dapm_nc_pin(dapm, "IN1RP");
0098     snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
0099
0100     return 0;
0101 }
0102
0103 SND_SOC_DAILINK_DEFS(aif1,
0104     DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
0105     DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
0106     DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
0107
0108 SND_SOC_DAILINK_DEFS(fifo_tx,
0109     DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
0110     DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
0111     DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
0112
0113 static struct snd_soc_dai_link smdk_dai[] = {
0114     { /* Primary DAI i/f */
0115         .name = "WM8994 AIF1",
0116         .stream_name = "Pri_Dai",
0117         .init = smdk_wm8994_init_paiftx,
0118         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
0119             SND_SOC_DAIFMT_CBM_CFM,
0120         .ops = &smdk_ops,
0121         SND_SOC_DAILINK_REG(aif1),
0122     }, { /* Sec_Fifo Playback i/f */
0123         .name = "Sec_FIFO TX",
0124         .stream_name = "Sec_Dai",
0125         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
0126             SND_SOC_DAIFMT_CBM_CFM,
0127         .ops = &smdk_ops,
0128         SND_SOC_DAILINK_REG(fifo_tx),
0129     },
0130 };
0131
0132 static struct snd_soc_card smdk = {
0133     .name = "SMDK-I2S",
0134     .owner = THIS_MODULE,
0135     .dai_link = smdk_dai,
0136     .num_links = ARRAY_SIZE(smdk_dai),
0137 };
0138
0139 static const struct of_device_id samsung_wm8994_of_match[] __maybe_unused = {
0140     { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
0141     {},
0142 };
0143 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
0144
0145 static int smdk_audio_probe(struct platform_device *pdev)
0146 {
0147     int ret;
0148     struct device_node *np = pdev->dev.of_node;
0149     struct snd_soc_card *card = &smdk;
0150     struct smdk_wm8994_data *board;
0151     const struct of_device_id *id;
0152
0153     card->dev = &pdev->dev;
0154
0155     board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
0156     if (!board)
0157         return -ENOMEM;
0158
0159     if (np) {
0160         smdk_dai[0].cpus->dai_name = NULL;
0161         smdk_dai[0].cpus->of_node = of_parse_phandle(np,
0162                 "samsung,i2s-controller", 0);
0163         if (!smdk_dai[0].cpus->of_node) {
0164             dev_err(&pdev->dev,
0165                "Property 'samsung,i2s-controller' missing or invalid\n");
0166             ret = -EINVAL;
0167             return ret;
0168         }
0169
0170         smdk_dai[0].platforms->name = NULL;
0171         smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
0172     }
0173
0174     id = of_match_device(samsung_wm8994_of_match, &pdev->dev);
0175     if (id)
0176         *board = *((struct smdk_wm8994_data *)id->data);
0177
0178     platform_set_drvdata(pdev, board);
0179
0180     ret = devm_snd_soc_register_card(&pdev->dev, card);
0181
0182     if (ret)
0183         dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
0184
0185     return ret;
0186 }
0187
0188 static struct platform_driver smdk_audio_driver = {
0189     .driver     = {
0190         .name   = "smdk-audio-wm8994",
0191         .of_match_table = of_match_ptr(samsung_wm8994_of_match),
0192         .pm = &snd_soc_pm_ops,
0193     },
0194     .probe      = smdk_audio_probe,
0195 };
0196
0197 module_platform_driver(smdk_audio_driver);
0198
0199 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
0200 MODULE_LICENSE("GPL");
0201 MODULE_ALIAS("platform:smdk-audio-wm8994");