228 строки
6.2 KiB
C
228 строки
6.2 KiB
C
/*
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* byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform
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*
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* Copyright (C) 2014 Intel Corp
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* Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "../../codecs/rt5640.h"
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#include "../atom/sst-atom-controls.h"
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static const struct snd_soc_dapm_widget byt_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone", NULL),
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SND_SOC_DAPM_MIC("Headset Mic", NULL),
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SND_SOC_DAPM_MIC("Int Mic", NULL),
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SND_SOC_DAPM_SPK("Ext Spk", NULL),
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};
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static const struct snd_soc_dapm_route byt_audio_map[] = {
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{"IN2P", NULL, "Headset Mic"},
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{"IN2N", NULL, "Headset Mic"},
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{"Headset Mic", NULL, "MICBIAS1"},
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{"IN1P", NULL, "MICBIAS1"},
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{"LDO2", NULL, "Int Mic"},
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{"Headphone", NULL, "HPOL"},
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{"Headphone", NULL, "HPOR"},
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{"Ext Spk", NULL, "SPOLP"},
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{"Ext Spk", NULL, "SPOLN"},
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{"Ext Spk", NULL, "SPORP"},
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{"Ext Spk", NULL, "SPORN"},
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{"AIF1 Playback", NULL, "ssp2 Tx"},
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{"ssp2 Tx", NULL, "codec_out0"},
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{"ssp2 Tx", NULL, "codec_out1"},
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{"codec_in0", NULL, "ssp2 Rx"},
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{"codec_in1", NULL, "ssp2 Rx"},
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{"ssp2 Rx", NULL, "AIF1 Capture"},
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};
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static const struct snd_kcontrol_new byt_mc_controls[] = {
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SOC_DAPM_PIN_SWITCH("Headphone"),
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SOC_DAPM_PIN_SWITCH("Headset Mic"),
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SOC_DAPM_PIN_SWITCH("Int Mic"),
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SOC_DAPM_PIN_SWITCH("Ext Spk"),
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};
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static int byt_aif1_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 = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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int ret;
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snd_soc_dai_set_bclk_ratio(codec_dai, 50);
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ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
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params_rate(params) * 512,
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SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(rtd->dev, "can't set codec clock %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
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params_rate(params) * 50,
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params_rate(params) * 512);
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if (ret < 0) {
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dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static const struct snd_soc_pcm_stream byt_dai_params = {
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.formats = SNDRV_PCM_FMTBIT_S24_LE,
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.rate_min = 48000,
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.rate_max = 48000,
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.channels_min = 2,
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.channels_max = 2,
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};
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static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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struct snd_interval *rate = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_CHANNELS);
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/* The DSP will covert the FE rate to 48k, stereo, 24bits */
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rate->min = rate->max = 48000;
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channels->min = channels->max = 2;
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/* set SSP2 to 24-bit */
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params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
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return 0;
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}
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static unsigned int rates_48000[] = {
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48000,
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};
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static struct snd_pcm_hw_constraint_list constraints_48000 = {
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.count = ARRAY_SIZE(rates_48000),
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.list = rates_48000,
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};
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static int byt_aif1_startup(struct snd_pcm_substream *substream)
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{
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return snd_pcm_hw_constraint_list(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE,
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&constraints_48000);
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}
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static struct snd_soc_ops byt_aif1_ops = {
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.startup = byt_aif1_startup,
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};
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static struct snd_soc_ops byt_be_ssp2_ops = {
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.hw_params = byt_aif1_hw_params,
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};
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static struct snd_soc_dai_link byt_dailink[] = {
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[MERR_DPCM_AUDIO] = {
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.name = "Baytrail Audio Port",
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.stream_name = "Baytrail Audio",
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.cpu_dai_name = "media-cpu-dai",
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.codec_dai_name = "snd-soc-dummy-dai",
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.codec_name = "snd-soc-dummy",
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.platform_name = "sst-mfld-platform",
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.ignore_suspend = 1,
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.dynamic = 1,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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.ops = &byt_aif1_ops,
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},
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[MERR_DPCM_COMPR] = {
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.name = "Baytrail Compressed Port",
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.stream_name = "Baytrail Compress",
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.cpu_dai_name = "compress-cpu-dai",
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.codec_dai_name = "snd-soc-dummy-dai",
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.codec_name = "snd-soc-dummy",
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.platform_name = "sst-mfld-platform",
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},
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/* back ends */
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{
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.name = "SSP2-Codec",
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.be_id = 1,
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.cpu_dai_name = "ssp2-port",
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.platform_name = "sst-mfld-platform",
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.no_pcm = 1,
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.codec_dai_name = "rt5640-aif1",
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.codec_name = "i2c-10EC5640:00",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
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| SND_SOC_DAIFMT_CBS_CFS,
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.be_hw_params_fixup = byt_codec_fixup,
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.ignore_suspend = 1,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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.ops = &byt_be_ssp2_ops,
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},
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};
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/* SoC card */
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static struct snd_soc_card snd_soc_card_byt = {
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.name = "baytrailcraudio",
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.dai_link = byt_dailink,
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.num_links = ARRAY_SIZE(byt_dailink),
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.dapm_widgets = byt_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(byt_dapm_widgets),
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.dapm_routes = byt_audio_map,
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.num_dapm_routes = ARRAY_SIZE(byt_audio_map),
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.controls = byt_mc_controls,
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.num_controls = ARRAY_SIZE(byt_mc_controls),
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};
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static int snd_byt_mc_probe(struct platform_device *pdev)
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{
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int ret_val = 0;
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/* register the soc card */
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snd_soc_card_byt.dev = &pdev->dev;
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ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_byt);
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if (ret_val) {
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dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val);
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return ret_val;
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}
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platform_set_drvdata(pdev, &snd_soc_card_byt);
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return ret_val;
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}
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static struct platform_driver snd_byt_mc_driver = {
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.driver = {
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.name = "bytt100_rt5640",
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.pm = &snd_soc_pm_ops,
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},
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.probe = snd_byt_mc_probe,
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};
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module_platform_driver(snd_byt_mc_driver);
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MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
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MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:bytt100_rt5640");
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