1 /* 2 * byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform 3 * 4 * Copyright (C) 2014 Intel Corp 5 * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com> 6 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; version 2 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18 */ 19 20 #include <linux/init.h> 21 #include <linux/module.h> 22 #include <linux/platform_device.h> 23 #include <linux/device.h> 24 #include <linux/slab.h> 25 #include <linux/input.h> 26 #include <sound/pcm.h> 27 #include <sound/pcm_params.h> 28 #include <sound/soc.h> 29 #include "../../codecs/rt5640.h" 30 #include "../atom/sst-atom-controls.h" 31 32 static const struct snd_soc_dapm_widget byt_dapm_widgets[] = { 33 SND_SOC_DAPM_HP("Headphone", NULL), 34 SND_SOC_DAPM_MIC("Headset Mic", NULL), 35 SND_SOC_DAPM_MIC("Int Mic", NULL), 36 SND_SOC_DAPM_SPK("Ext Spk", NULL), 37 }; 38 39 static const struct snd_soc_dapm_route byt_audio_map[] = { 40 {"IN2P", NULL, "Headset Mic"}, 41 {"IN2N", NULL, "Headset Mic"}, 42 {"Headset Mic", NULL, "MICBIAS1"}, 43 {"IN1P", NULL, "MICBIAS1"}, 44 {"LDO2", NULL, "Int Mic"}, 45 {"Headphone", NULL, "HPOL"}, 46 {"Headphone", NULL, "HPOR"}, 47 {"Ext Spk", NULL, "SPOLP"}, 48 {"Ext Spk", NULL, "SPOLN"}, 49 {"Ext Spk", NULL, "SPORP"}, 50 {"Ext Spk", NULL, "SPORN"}, 51 52 {"AIF1 Playback", NULL, "ssp2 Tx"}, 53 {"ssp2 Tx", NULL, "codec_out0"}, 54 {"ssp2 Tx", NULL, "codec_out1"}, 55 {"codec_in0", NULL, "ssp2 Rx"}, 56 {"codec_in1", NULL, "ssp2 Rx"}, 57 {"ssp2 Rx", NULL, "AIF1 Capture"}, 58 }; 59 60 static const struct snd_kcontrol_new byt_mc_controls[] = { 61 SOC_DAPM_PIN_SWITCH("Headphone"), 62 SOC_DAPM_PIN_SWITCH("Headset Mic"), 63 SOC_DAPM_PIN_SWITCH("Int Mic"), 64 SOC_DAPM_PIN_SWITCH("Ext Spk"), 65 }; 66 67 static int byt_aif1_hw_params(struct snd_pcm_substream *substream, 68 struct snd_pcm_hw_params *params) 69 { 70 struct snd_soc_pcm_runtime *rtd = substream->private_data; 71 struct snd_soc_dai *codec_dai = rtd->codec_dai; 72 int ret; 73 74 snd_soc_dai_set_bclk_ratio(codec_dai, 50); 75 76 ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1, 77 params_rate(params) * 512, 78 SND_SOC_CLOCK_IN); 79 if (ret < 0) { 80 dev_err(rtd->dev, "can't set codec clock %d\n", ret); 81 return ret; 82 } 83 84 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1, 85 params_rate(params) * 50, 86 params_rate(params) * 512); 87 if (ret < 0) { 88 dev_err(rtd->dev, "can't set codec pll: %d\n", ret); 89 return ret; 90 } 91 92 return 0; 93 } 94 95 static const struct snd_soc_pcm_stream byt_dai_params = { 96 .formats = SNDRV_PCM_FMTBIT_S24_LE, 97 .rate_min = 48000, 98 .rate_max = 48000, 99 .channels_min = 2, 100 .channels_max = 2, 101 }; 102 103 static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd, 104 struct snd_pcm_hw_params *params) 105 { 106 struct snd_interval *rate = hw_param_interval(params, 107 SNDRV_PCM_HW_PARAM_RATE); 108 struct snd_interval *channels = hw_param_interval(params, 109 SNDRV_PCM_HW_PARAM_CHANNELS); 110 111 /* The DSP will covert the FE rate to 48k, stereo, 24bits */ 112 rate->min = rate->max = 48000; 113 channels->min = channels->max = 2; 114 115 /* set SSP2 to 24-bit */ 116 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); 117 return 0; 118 } 119 120 static unsigned int rates_48000[] = { 121 48000, 122 }; 123 124 static struct snd_pcm_hw_constraint_list constraints_48000 = { 125 .count = ARRAY_SIZE(rates_48000), 126 .list = rates_48000, 127 }; 128 129 static int byt_aif1_startup(struct snd_pcm_substream *substream) 130 { 131 return snd_pcm_hw_constraint_list(substream->runtime, 0, 132 SNDRV_PCM_HW_PARAM_RATE, 133 &constraints_48000); 134 } 135 136 static struct snd_soc_ops byt_aif1_ops = { 137 .startup = byt_aif1_startup, 138 }; 139 140 static struct snd_soc_ops byt_be_ssp2_ops = { 141 .hw_params = byt_aif1_hw_params, 142 }; 143 144 static struct snd_soc_dai_link byt_dailink[] = { 145 [MERR_DPCM_AUDIO] = { 146 .name = "Baytrail Audio Port", 147 .stream_name = "Baytrail Audio", 148 .cpu_dai_name = "media-cpu-dai", 149 .codec_dai_name = "snd-soc-dummy-dai", 150 .codec_name = "snd-soc-dummy", 151 .platform_name = "sst-mfld-platform", 152 .ignore_suspend = 1, 153 .dynamic = 1, 154 .dpcm_playback = 1, 155 .dpcm_capture = 1, 156 .ops = &byt_aif1_ops, 157 }, 158 [MERR_DPCM_COMPR] = { 159 .name = "Baytrail Compressed Port", 160 .stream_name = "Baytrail Compress", 161 .cpu_dai_name = "compress-cpu-dai", 162 .codec_dai_name = "snd-soc-dummy-dai", 163 .codec_name = "snd-soc-dummy", 164 .platform_name = "sst-mfld-platform", 165 }, 166 /* back ends */ 167 { 168 .name = "SSP2-Codec", 169 .be_id = 1, 170 .cpu_dai_name = "ssp2-port", 171 .platform_name = "sst-mfld-platform", 172 .no_pcm = 1, 173 .codec_dai_name = "rt5640-aif1", 174 .codec_name = "i2c-10EC5640:00", 175 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 176 | SND_SOC_DAIFMT_CBS_CFS, 177 .be_hw_params_fixup = byt_codec_fixup, 178 .ignore_suspend = 1, 179 .dpcm_playback = 1, 180 .dpcm_capture = 1, 181 .ops = &byt_be_ssp2_ops, 182 }, 183 }; 184 185 /* SoC card */ 186 static struct snd_soc_card snd_soc_card_byt = { 187 .name = "baytrailcraudio", 188 .dai_link = byt_dailink, 189 .num_links = ARRAY_SIZE(byt_dailink), 190 .dapm_widgets = byt_dapm_widgets, 191 .num_dapm_widgets = ARRAY_SIZE(byt_dapm_widgets), 192 .dapm_routes = byt_audio_map, 193 .num_dapm_routes = ARRAY_SIZE(byt_audio_map), 194 .controls = byt_mc_controls, 195 .num_controls = ARRAY_SIZE(byt_mc_controls), 196 }; 197 198 static int snd_byt_mc_probe(struct platform_device *pdev) 199 { 200 int ret_val = 0; 201 202 /* register the soc card */ 203 snd_soc_card_byt.dev = &pdev->dev; 204 205 ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_byt); 206 if (ret_val) { 207 dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val); 208 return ret_val; 209 } 210 platform_set_drvdata(pdev, &snd_soc_card_byt); 211 return ret_val; 212 } 213 214 static struct platform_driver snd_byt_mc_driver = { 215 .driver = { 216 .name = "bytt100_rt5640", 217 .pm = &snd_soc_pm_ops, 218 }, 219 .probe = snd_byt_mc_probe, 220 }; 221 222 module_platform_driver(snd_byt_mc_driver); 223 224 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); 225 MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>"); 226 MODULE_LICENSE("GPL v2"); 227 MODULE_ALIAS("platform:bytt100_rt5640"); 228