1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2022, 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 struct sc8280xp_snd_data { 18 bool stream_prepared[AFE_PORT_MAX]; 19 struct snd_soc_card *card; 20 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX]; 21 struct snd_soc_jack jack; 22 bool jack_setup; 23 }; 24 25 static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd) 26 { 27 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 28 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 29 struct snd_soc_card *card = rtd->card; 30 31 switch (cpu_dai->id) { 32 case WSA_CODEC_DMA_RX_0: 33 case WSA_CODEC_DMA_RX_1: 34 /* 35 * set limit of 0dB on Digital Volume for Speakers, 36 * this can prevent damage of speakers to some extent without 37 * active speaker protection 38 */ 39 snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 84); 40 snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 84); 41 break; 42 default: 43 break; 44 } 45 46 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup); 47 } 48 49 static void sc8280xp_snd_shutdown(struct snd_pcm_substream *substream) 50 { 51 struct snd_soc_pcm_runtime *rtd = substream->private_data; 52 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 53 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 54 struct sdw_stream_runtime *sruntime = pdata->sruntime[cpu_dai->id]; 55 56 pdata->sruntime[cpu_dai->id] = NULL; 57 sdw_release_stream(sruntime); 58 } 59 60 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 61 struct snd_pcm_hw_params *params) 62 { 63 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 64 struct snd_interval *rate = hw_param_interval(params, 65 SNDRV_PCM_HW_PARAM_RATE); 66 struct snd_interval *channels = hw_param_interval(params, 67 SNDRV_PCM_HW_PARAM_CHANNELS); 68 69 rate->min = rate->max = 48000; 70 channels->min = 2; 71 channels->max = 2; 72 switch (cpu_dai->id) { 73 case TX_CODEC_DMA_TX_0: 74 case TX_CODEC_DMA_TX_1: 75 case TX_CODEC_DMA_TX_2: 76 case TX_CODEC_DMA_TX_3: 77 channels->min = 1; 78 break; 79 default: 80 break; 81 } 82 83 84 return 0; 85 } 86 87 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream, 88 struct snd_pcm_hw_params *params) 89 { 90 struct snd_soc_pcm_runtime *rtd = substream->private_data; 91 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 92 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 93 94 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 95 } 96 97 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream) 98 { 99 struct snd_soc_pcm_runtime *rtd = substream->private_data; 100 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 101 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 102 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 103 104 return qcom_snd_sdw_prepare(substream, sruntime, 105 &data->stream_prepared[cpu_dai->id]); 106 } 107 108 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream) 109 { 110 struct snd_soc_pcm_runtime *rtd = substream->private_data; 111 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 112 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 113 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 114 115 return qcom_snd_sdw_hw_free(substream, sruntime, 116 &data->stream_prepared[cpu_dai->id]); 117 } 118 119 static const struct snd_soc_ops sc8280xp_be_ops = { 120 .startup = qcom_snd_sdw_startup, 121 .shutdown = sc8280xp_snd_shutdown, 122 .hw_params = sc8280xp_snd_hw_params, 123 .hw_free = sc8280xp_snd_hw_free, 124 .prepare = sc8280xp_snd_prepare, 125 }; 126 127 static void sc8280xp_add_be_ops(struct snd_soc_card *card) 128 { 129 struct snd_soc_dai_link *link; 130 int i; 131 132 for_each_card_prelinks(card, i, link) { 133 if (link->no_pcm == 1) { 134 link->init = sc8280xp_snd_init; 135 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup; 136 link->ops = &sc8280xp_be_ops; 137 } 138 } 139 } 140 141 static int sc8280xp_platform_probe(struct platform_device *pdev) 142 { 143 struct snd_soc_card *card; 144 struct sc8280xp_snd_data *data; 145 struct device *dev = &pdev->dev; 146 int ret; 147 148 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 149 if (!card) 150 return -ENOMEM; 151 card->owner = THIS_MODULE; 152 /* Allocate the private data */ 153 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 154 if (!data) 155 return -ENOMEM; 156 157 card->dev = dev; 158 dev_set_drvdata(dev, card); 159 snd_soc_card_set_drvdata(card, data); 160 ret = qcom_snd_parse_of(card); 161 if (ret) 162 return ret; 163 164 card->driver_name = of_device_get_match_data(dev); 165 sc8280xp_add_be_ops(card); 166 return devm_snd_soc_register_card(dev, card); 167 } 168 169 static const struct of_device_id snd_sc8280xp_dt_match[] = { 170 {.compatible = "qcom,sc8280xp-sndcard", "sc8280xp"}, 171 {.compatible = "qcom,sm8450-sndcard", "sm8450"}, 172 {.compatible = "qcom,sm8550-sndcard", "sm8550"}, 173 {.compatible = "qcom,sm8650-sndcard", "sm8650"}, 174 {} 175 }; 176 177 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match); 178 179 static struct platform_driver snd_sc8280xp_driver = { 180 .probe = sc8280xp_platform_probe, 181 .driver = { 182 .name = "snd-sc8280xp", 183 .of_match_table = snd_sc8280xp_dt_match, 184 }, 185 }; 186 module_platform_driver(snd_sc8280xp_driver); 187 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 188 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver"); 189 MODULE_LICENSE("GPL"); 190