1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2020, Linaro Limited 3 4 #include <dt-bindings/sound/qcom,q6afe.h> 5 #include <linux/module.h> 6 #include <linux/platform_device.h> 7 #include <sound/soc.h> 8 #include <sound/soc-dapm.h> 9 #include <sound/pcm.h> 10 #include <linux/soundwire/sdw.h> 11 #include <sound/jack.h> 12 #include <linux/input-event-codes.h> 13 #include "qdsp6/q6afe.h" 14 #include "common.h" 15 #include "sdw.h" 16 17 #define DRIVER_NAME "sm8250" 18 #define MI2S_BCLK_RATE 1536000 19 20 struct sm8250_snd_data { 21 bool stream_prepared[AFE_PORT_MAX]; 22 struct snd_soc_card *card; 23 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX]; 24 struct snd_soc_jack jack; 25 bool jack_setup; 26 }; 27 28 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd) 29 { 30 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 31 32 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup); 33 } 34 35 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 36 struct snd_pcm_hw_params *params) 37 { 38 struct snd_interval *rate = hw_param_interval(params, 39 SNDRV_PCM_HW_PARAM_RATE); 40 struct snd_interval *channels = hw_param_interval(params, 41 SNDRV_PCM_HW_PARAM_CHANNELS); 42 43 rate->min = rate->max = 48000; 44 channels->min = channels->max = 2; 45 46 return 0; 47 } 48 49 static int sm8250_snd_startup(struct snd_pcm_substream *substream) 50 { 51 unsigned int fmt = SND_SOC_DAIFMT_BP_FP; 52 unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC; 53 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 54 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 55 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); 56 57 switch (cpu_dai->id) { 58 case PRIMARY_MI2S_RX: 59 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S; 60 snd_soc_dai_set_sysclk(cpu_dai, 61 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT, 62 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); 63 snd_soc_dai_set_fmt(cpu_dai, fmt); 64 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); 65 break; 66 case TERTIARY_MI2S_RX: 67 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S; 68 snd_soc_dai_set_sysclk(cpu_dai, 69 Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT, 70 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); 71 snd_soc_dai_set_fmt(cpu_dai, fmt); 72 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); 73 break; 74 default: 75 break; 76 } 77 78 return qcom_snd_sdw_startup(substream); 79 } 80 81 static void sm2450_snd_shutdown(struct snd_pcm_substream *substream) 82 { 83 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 84 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 85 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 86 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 87 88 data->sruntime[cpu_dai->id] = NULL; 89 sdw_release_stream(sruntime); 90 } 91 92 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream, 93 struct snd_pcm_hw_params *params) 94 { 95 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 96 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 97 struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 98 99 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 100 } 101 102 static int sm8250_snd_prepare(struct snd_pcm_substream *substream) 103 { 104 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 105 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 106 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 107 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 108 109 return qcom_snd_sdw_prepare(substream, sruntime, 110 &data->stream_prepared[cpu_dai->id]); 111 } 112 113 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream) 114 { 115 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 116 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 117 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 118 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 119 120 return qcom_snd_sdw_hw_free(substream, sruntime, 121 &data->stream_prepared[cpu_dai->id]); 122 } 123 124 static const struct snd_soc_ops sm8250_be_ops = { 125 .startup = sm8250_snd_startup, 126 .shutdown = sm2450_snd_shutdown, 127 .hw_params = sm8250_snd_hw_params, 128 .hw_free = sm8250_snd_hw_free, 129 .prepare = sm8250_snd_prepare, 130 }; 131 132 static void sm8250_add_be_ops(struct snd_soc_card *card) 133 { 134 struct snd_soc_dai_link *link; 135 int i; 136 137 for_each_card_prelinks(card, i, link) { 138 if (link->no_pcm == 1) { 139 link->init = sm8250_snd_init; 140 link->be_hw_params_fixup = sm8250_be_hw_params_fixup; 141 link->ops = &sm8250_be_ops; 142 } 143 } 144 } 145 146 static int sm8250_platform_probe(struct platform_device *pdev) 147 { 148 struct snd_soc_card *card; 149 struct sm8250_snd_data *data; 150 struct device *dev = &pdev->dev; 151 int ret; 152 153 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 154 if (!card) 155 return -ENOMEM; 156 157 card->owner = THIS_MODULE; 158 /* Allocate the private data */ 159 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 160 if (!data) 161 return -ENOMEM; 162 163 card->dev = dev; 164 dev_set_drvdata(dev, card); 165 snd_soc_card_set_drvdata(card, data); 166 ret = qcom_snd_parse_of(card); 167 if (ret) 168 return ret; 169 170 card->driver_name = DRIVER_NAME; 171 sm8250_add_be_ops(card); 172 return devm_snd_soc_register_card(dev, card); 173 } 174 175 static const struct of_device_id snd_sm8250_dt_match[] = { 176 {.compatible = "qcom,sm8250-sndcard"}, 177 {.compatible = "qcom,qrb4210-rb2-sndcard"}, 178 {.compatible = "qcom,qrb5165-rb5-sndcard"}, 179 {} 180 }; 181 182 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match); 183 184 static struct platform_driver snd_sm8250_driver = { 185 .probe = sm8250_platform_probe, 186 .driver = { 187 .name = "snd-sm8250", 188 .of_match_table = snd_sm8250_dt_match, 189 }, 190 }; 191 module_platform_driver(snd_sm8250_driver); 192 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 193 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver"); 194 MODULE_LICENSE("GPL"); 195