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 SECONDARY_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_SEC_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 case TERTIARY_MI2S_RX: 75 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S; 76 snd_soc_dai_set_sysclk(cpu_dai, 77 Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT, 78 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); 79 snd_soc_dai_set_fmt(cpu_dai, fmt); 80 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); 81 break; 82 default: 83 break; 84 } 85 86 return qcom_snd_sdw_startup(substream); 87 } 88 89 static void sm8250_snd_shutdown(struct snd_pcm_substream *substream) 90 { 91 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 92 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 93 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 94 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 95 96 data->sruntime[cpu_dai->id] = NULL; 97 sdw_release_stream(sruntime); 98 } 99 100 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream, 101 struct snd_pcm_hw_params *params) 102 { 103 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 104 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 105 struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 106 107 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 108 } 109 110 static int sm8250_snd_prepare(struct snd_pcm_substream *substream) 111 { 112 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 113 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 114 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 115 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 116 117 return qcom_snd_sdw_prepare(substream, sruntime, 118 &data->stream_prepared[cpu_dai->id]); 119 } 120 121 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream) 122 { 123 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 124 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 125 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 126 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 127 128 return qcom_snd_sdw_hw_free(substream, sruntime, 129 &data->stream_prepared[cpu_dai->id]); 130 } 131 132 static const struct snd_soc_ops sm8250_be_ops = { 133 .startup = sm8250_snd_startup, 134 .shutdown = sm8250_snd_shutdown, 135 .hw_params = sm8250_snd_hw_params, 136 .hw_free = sm8250_snd_hw_free, 137 .prepare = sm8250_snd_prepare, 138 }; 139 140 static void sm8250_add_be_ops(struct snd_soc_card *card) 141 { 142 struct snd_soc_dai_link *link; 143 int i; 144 145 for_each_card_prelinks(card, i, link) { 146 if (link->no_pcm == 1) { 147 link->init = sm8250_snd_init; 148 link->be_hw_params_fixup = sm8250_be_hw_params_fixup; 149 link->ops = &sm8250_be_ops; 150 } 151 } 152 } 153 154 static int sm8250_platform_probe(struct platform_device *pdev) 155 { 156 struct snd_soc_card *card; 157 struct sm8250_snd_data *data; 158 struct device *dev = &pdev->dev; 159 int ret; 160 161 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 162 if (!card) 163 return -ENOMEM; 164 165 card->owner = THIS_MODULE; 166 /* Allocate the private data */ 167 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 168 if (!data) 169 return -ENOMEM; 170 171 card->dev = dev; 172 dev_set_drvdata(dev, card); 173 snd_soc_card_set_drvdata(card, data); 174 ret = qcom_snd_parse_of(card); 175 if (ret) 176 return ret; 177 178 card->driver_name = DRIVER_NAME; 179 sm8250_add_be_ops(card); 180 return devm_snd_soc_register_card(dev, card); 181 } 182 183 static const struct of_device_id snd_sm8250_dt_match[] = { 184 {.compatible = "qcom,sm8250-sndcard"}, 185 {.compatible = "qcom,qrb4210-rb2-sndcard"}, 186 {.compatible = "qcom,qrb5165-rb5-sndcard"}, 187 {} 188 }; 189 190 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match); 191 192 static struct platform_driver snd_sm8250_driver = { 193 .probe = sm8250_platform_probe, 194 .driver = { 195 .name = "snd-sm8250", 196 .of_match_table = snd_sm8250_dt_match, 197 }, 198 }; 199 module_platform_driver(snd_sm8250_driver); 200 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 201 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver"); 202 MODULE_LICENSE("GPL"); 203