| // SPDX-License-Identifier: GPL-2.0+ |
| |
| #include "../codecs/wm8994.h" |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| |
| /* |
| * Default CFG switch settings to use this driver: |
| * SMDKV310: CFG5-1000, CFG7-111111 |
| */ |
| |
| /* |
| * Configure audio route as :- |
| * $ amixer sset 'DAC1' on,on |
| * $ amixer sset 'Right Headphone Mux' 'DAC' |
| * $ amixer sset 'Left Headphone Mux' 'DAC' |
| * $ amixer sset 'DAC1R Mixer AIF1.1' on |
| * $ amixer sset 'DAC1L Mixer AIF1.1' on |
| * $ amixer sset 'IN2L' on |
| * $ amixer sset 'IN2L PGA IN2LN' on |
| * $ amixer sset 'MIXINL IN2L' on |
| * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on |
| * $ amixer sset 'IN2R' on |
| * $ amixer sset 'IN2R PGA IN2RN' on |
| * $ amixer sset 'MIXINR IN2R' on |
| * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on |
| */ |
| |
| /* SMDK has a 16.934MHZ crystal attached to WM8994 */ |
| #define SMDK_WM8994_FREQ 16934000 |
| |
| struct smdk_wm8994_data { |
| int mclk1_rate; |
| }; |
| |
| /* Default SMDKs */ |
| static struct smdk_wm8994_data smdk_board_data = { |
| .mclk1_rate = SMDK_WM8994_FREQ, |
| }; |
| |
| static int smdk_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
| unsigned int pll_out; |
| int ret; |
| |
| /* AIF1CLK should be >=3MHz for optimal performance */ |
| if (params_width(params) == 24) |
| pll_out = params_rate(params) * 384; |
| else if (params_rate(params) == 8000 || params_rate(params) == 11025) |
| pll_out = params_rate(params) * 512; |
| else |
| pll_out = params_rate(params) * 256; |
| |
| ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, |
| SMDK_WM8994_FREQ, pll_out); |
| if (ret < 0) |
| return ret; |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, |
| pll_out, SND_SOC_CLOCK_IN); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| /* |
| * SMDK WM8994 DAI operations. |
| */ |
| static struct snd_soc_ops smdk_ops = { |
| .hw_params = smdk_hw_params, |
| }; |
| |
| static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct snd_soc_dapm_context *dapm = &rtd->card->dapm; |
| |
| /* Other pins NC */ |
| snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); |
| snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); |
| snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); |
| snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); |
| snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); |
| snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); |
| snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); |
| snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); |
| snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); |
| snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); |
| snd_soc_dapm_nc_pin(dapm, "IN1LP"); |
| snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); |
| snd_soc_dapm_nc_pin(dapm, "IN1RP"); |
| snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); |
| |
| return 0; |
| } |
| |
| SND_SOC_DAILINK_DEFS(aif1, |
| DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")), |
| DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")), |
| DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); |
| |
| SND_SOC_DAILINK_DEFS(fifo_tx, |
| DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")), |
| DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")), |
| DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec"))); |
| |
| static struct snd_soc_dai_link smdk_dai[] = { |
| { /* Primary DAI i/f */ |
| .name = "WM8994 AIF1", |
| .stream_name = "Pri_Dai", |
| .init = smdk_wm8994_init_paiftx, |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM, |
| .ops = &smdk_ops, |
| SND_SOC_DAILINK_REG(aif1), |
| }, { /* Sec_Fifo Playback i/f */ |
| .name = "Sec_FIFO TX", |
| .stream_name = "Sec_Dai", |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM, |
| .ops = &smdk_ops, |
| SND_SOC_DAILINK_REG(fifo_tx), |
| }, |
| }; |
| |
| static struct snd_soc_card smdk = { |
| .name = "SMDK-I2S", |
| .owner = THIS_MODULE, |
| .dai_link = smdk_dai, |
| .num_links = ARRAY_SIZE(smdk_dai), |
| }; |
| |
| static const struct of_device_id samsung_wm8994_of_match[] __maybe_unused = { |
| { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); |
| |
| static int smdk_audio_probe(struct platform_device *pdev) |
| { |
| int ret; |
| struct device_node *np = pdev->dev.of_node; |
| struct snd_soc_card *card = &smdk; |
| struct smdk_wm8994_data *board; |
| const struct of_device_id *id; |
| |
| card->dev = &pdev->dev; |
| |
| board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL); |
| if (!board) |
| return -ENOMEM; |
| |
| if (np) { |
| smdk_dai[0].cpus->dai_name = NULL; |
| smdk_dai[0].cpus->of_node = of_parse_phandle(np, |
| "samsung,i2s-controller", 0); |
| if (!smdk_dai[0].cpus->of_node) { |
| dev_err(&pdev->dev, |
| "Property 'samsung,i2s-controller' missing or invalid\n"); |
| ret = -EINVAL; |
| return ret; |
| } |
| |
| smdk_dai[0].platforms->name = NULL; |
| smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node; |
| } |
| |
| id = of_match_device(samsung_wm8994_of_match, &pdev->dev); |
| if (id) |
| *board = *((struct smdk_wm8994_data *)id->data); |
| |
| platform_set_drvdata(pdev, board); |
| |
| ret = devm_snd_soc_register_card(&pdev->dev, card); |
| |
| if (ret && ret != -EPROBE_DEFER) |
| dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); |
| |
| return ret; |
| } |
| |
| static struct platform_driver smdk_audio_driver = { |
| .driver = { |
| .name = "smdk-audio-wm8994", |
| .of_match_table = of_match_ptr(samsung_wm8994_of_match), |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = smdk_audio_probe, |
| }; |
| |
| module_platform_driver(smdk_audio_driver); |
| |
| MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:smdk-audio-wm8994"); |