| /* |
| * byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform |
| * |
| * Copyright (C) 2014 Intel Corp |
| * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com> |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/device.h> |
| #include <linux/slab.h> |
| #include <linux/input.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include "../codecs/rt5640.h" |
| #include "sst-atom-controls.h" |
| |
| static const struct snd_soc_dapm_widget byt_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("Headphone", NULL), |
| SND_SOC_DAPM_MIC("Headset Mic", NULL), |
| SND_SOC_DAPM_MIC("Int Mic", NULL), |
| SND_SOC_DAPM_SPK("Ext Spk", NULL), |
| }; |
| |
| static const struct snd_soc_dapm_route byt_audio_map[] = { |
| {"IN2P", NULL, "Headset Mic"}, |
| {"IN2N", NULL, "Headset Mic"}, |
| {"Headset Mic", NULL, "MICBIAS1"}, |
| {"IN1P", NULL, "MICBIAS1"}, |
| {"LDO2", NULL, "Int Mic"}, |
| {"Headphone", NULL, "HPOL"}, |
| {"Headphone", NULL, "HPOR"}, |
| {"Ext Spk", NULL, "SPOLP"}, |
| {"Ext Spk", NULL, "SPOLN"}, |
| {"Ext Spk", NULL, "SPORP"}, |
| {"Ext Spk", NULL, "SPORN"}, |
| |
| {"AIF1 Playback", NULL, "ssp2 Tx"}, |
| {"ssp2 Tx", NULL, "codec_out0"}, |
| {"ssp2 Tx", NULL, "codec_out1"}, |
| {"codec_in0", NULL, "ssp2 Rx"}, |
| {"codec_in1", NULL, "ssp2 Rx"}, |
| {"ssp2 Rx", NULL, "AIF1 Capture"}, |
| }; |
| |
| static const struct snd_kcontrol_new byt_mc_controls[] = { |
| SOC_DAPM_PIN_SWITCH("Headphone"), |
| SOC_DAPM_PIN_SWITCH("Headset Mic"), |
| SOC_DAPM_PIN_SWITCH("Int Mic"), |
| SOC_DAPM_PIN_SWITCH("Ext Spk"), |
| }; |
| |
| static int byt_aif1_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| int ret; |
| |
| snd_soc_dai_set_bclk_ratio(codec_dai, 50); |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1, |
| params_rate(params) * 512, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) { |
| dev_err(rtd->dev, "can't set codec clock %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1, |
| params_rate(params) * 50, |
| params_rate(params) * 512); |
| if (ret < 0) { |
| dev_err(rtd->dev, "can't set codec pll: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static const struct snd_soc_pcm_stream byt_dai_params = { |
| .formats = SNDRV_PCM_FMTBIT_S24_LE, |
| .rate_min = 48000, |
| .rate_max = 48000, |
| .channels_min = 2, |
| .channels_max = 2, |
| }; |
| |
| static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_interval *rate = hw_param_interval(params, |
| SNDRV_PCM_HW_PARAM_RATE); |
| struct snd_interval *channels = hw_param_interval(params, |
| SNDRV_PCM_HW_PARAM_CHANNELS); |
| |
| /* The DSP will covert the FE rate to 48k, stereo, 24bits */ |
| rate->min = rate->max = 48000; |
| channels->min = channels->max = 2; |
| |
| /* set SSP2 to 24-bit */ |
| snd_mask_set(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT - |
| SNDRV_PCM_HW_PARAM_FIRST_MASK], |
| SNDRV_PCM_FORMAT_S24_LE); |
| return 0; |
| } |
| |
| static unsigned int rates_48000[] = { |
| 48000, |
| }; |
| |
| static struct snd_pcm_hw_constraint_list constraints_48000 = { |
| .count = ARRAY_SIZE(rates_48000), |
| .list = rates_48000, |
| }; |
| |
| static int byt_aif1_startup(struct snd_pcm_substream *substream) |
| { |
| return snd_pcm_hw_constraint_list(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_RATE, |
| &constraints_48000); |
| } |
| |
| static struct snd_soc_ops byt_aif1_ops = { |
| .startup = byt_aif1_startup, |
| }; |
| |
| static struct snd_soc_ops byt_be_ssp2_ops = { |
| .hw_params = byt_aif1_hw_params, |
| }; |
| |
| static struct snd_soc_dai_link byt_dailink[] = { |
| [MERR_DPCM_AUDIO] = { |
| .name = "Baytrail Audio Port", |
| .stream_name = "Baytrail Audio", |
| .cpu_dai_name = "media-cpu-dai", |
| .codec_dai_name = "snd-soc-dummy-dai", |
| .codec_name = "snd-soc-dummy", |
| .platform_name = "sst-mfld-platform", |
| .ignore_suspend = 1, |
| .dynamic = 1, |
| .dpcm_playback = 1, |
| .dpcm_capture = 1, |
| .ops = &byt_aif1_ops, |
| }, |
| [MERR_DPCM_COMPR] = { |
| .name = "Baytrail Compressed Port", |
| .stream_name = "Baytrail Compress", |
| .cpu_dai_name = "compress-cpu-dai", |
| .codec_dai_name = "snd-soc-dummy-dai", |
| .codec_name = "snd-soc-dummy", |
| .platform_name = "sst-mfld-platform", |
| }, |
| /* back ends */ |
| { |
| .name = "SSP2-Codec", |
| .be_id = 1, |
| .cpu_dai_name = "ssp2-port", |
| .platform_name = "sst-mfld-platform", |
| .no_pcm = 1, |
| .codec_dai_name = "rt5640-aif1", |
| .codec_name = "i2c-10EC5640:00", |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
| | SND_SOC_DAIFMT_CBS_CFS, |
| .be_hw_params_fixup = byt_codec_fixup, |
| .ignore_suspend = 1, |
| .dpcm_playback = 1, |
| .dpcm_capture = 1, |
| .ops = &byt_be_ssp2_ops, |
| }, |
| }; |
| |
| /* SoC card */ |
| static struct snd_soc_card snd_soc_card_byt = { |
| .name = "baytrailcraudio", |
| .dai_link = byt_dailink, |
| .num_links = ARRAY_SIZE(byt_dailink), |
| .dapm_widgets = byt_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(byt_dapm_widgets), |
| .dapm_routes = byt_audio_map, |
| .num_dapm_routes = ARRAY_SIZE(byt_audio_map), |
| .controls = byt_mc_controls, |
| .num_controls = ARRAY_SIZE(byt_mc_controls), |
| }; |
| |
| static int snd_byt_mc_probe(struct platform_device *pdev) |
| { |
| int ret_val = 0; |
| |
| /* register the soc card */ |
| snd_soc_card_byt.dev = &pdev->dev; |
| |
| ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_byt); |
| if (ret_val) { |
| dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val); |
| return ret_val; |
| } |
| platform_set_drvdata(pdev, &snd_soc_card_byt); |
| return ret_val; |
| } |
| |
| static struct platform_driver snd_byt_mc_driver = { |
| .driver = { |
| .name = "bytt100_rt5640", |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = snd_byt_mc_probe, |
| }; |
| |
| module_platform_driver(snd_byt_mc_driver); |
| |
| MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); |
| MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:bytrt5640-audio"); |