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138 lines
3.4 KiB
138 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// Copyright (c) 2011 Samsung Electronics Co., Ltd |
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// http://www.samsung.com |
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#include <linux/module.h> |
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#include <sound/soc.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include "../codecs/wm8994.h" |
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#include "pcm.h" |
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/* |
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* Board Settings: |
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* o '1' means 'ON' |
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* o '0' means 'OFF' |
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* o 'X' means 'Don't care' |
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* |
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* SMDKC210, SMDKV310: CFG3- 1001, 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 16.9344MHZ crystal attached to WM8994 */ |
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#define SMDK_WM8994_FREQ 16934400 |
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static int smdk_wm8994_pcm_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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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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unsigned long mclk_freq; |
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int rfs, ret; |
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switch(params_rate(params)) { |
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case 8000: |
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rfs = 512; |
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break; |
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default: |
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dev_err(cpu_dai->dev, "%s:%d Sampling Rate %u not supported!\n", |
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__func__, __LINE__, params_rate(params)); |
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return -EINVAL; |
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} |
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mclk_freq = params_rate(params) * rfs; |
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, |
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mclk_freq, 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_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, |
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SMDK_WM8994_FREQ, mclk_freq); |
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if (ret < 0) |
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return ret; |
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/* Set PCM source clock on CPU */ |
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ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX, |
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mclk_freq, SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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/* Set SCLK_DIV for making bclk */ |
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs); |
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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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static struct snd_soc_ops smdk_wm8994_pcm_ops = { |
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.hw_params = smdk_wm8994_pcm_hw_params, |
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}; |
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SND_SOC_DAILINK_DEFS(paif_pcm, |
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DAILINK_COMP_ARRAY(COMP_CPU("samsung-pcm.0")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-pcm.0"))); |
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static struct snd_soc_dai_link smdk_dai[] = { |
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{ |
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.name = "WM8994 PAIF PCM", |
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.stream_name = "Primary PCM", |
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.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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.ops = &smdk_wm8994_pcm_ops, |
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SND_SOC_DAILINK_REG(paif_pcm), |
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}, |
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}; |
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static struct snd_soc_card smdk_pcm = { |
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.name = "SMDK-PCM", |
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.owner = THIS_MODULE, |
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.dai_link = smdk_dai, |
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.num_links = 1, |
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}; |
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static int snd_smdk_probe(struct platform_device *pdev) |
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{ |
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int ret = 0; |
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smdk_pcm.dev = &pdev->dev; |
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ret = devm_snd_soc_register_card(&pdev->dev, &smdk_pcm); |
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if (ret && ret != -EPROBE_DEFER) |
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dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret); |
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return ret; |
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} |
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static struct platform_driver snd_smdk_driver = { |
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.driver = { |
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.name = "samsung-smdk-pcm", |
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}, |
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.probe = snd_smdk_probe, |
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}; |
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module_platform_driver(snd_smdk_driver); |
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MODULE_AUTHOR("Sangbeom Kim, <[email protected]>"); |
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MODULE_DESCRIPTION("ALSA SoC SMDK WM8994 for PCM"); |
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MODULE_LICENSE("GPL");
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