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