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 -3 dB on Digital Volume and 0 dB on PA Volume 36 * to reduce the risk of speaker damage until we have active 37 * speaker protection in place. 38 */ 39 snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 81); 40 snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 81); 41 snd_soc_limit_volume(card, "SpkrLeft PA Volume", 17); 42 snd_soc_limit_volume(card, "SpkrRight PA Volume", 17); 43 break; 44 default: 45 break; 46 } 47 48 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup); 49 } 50 51 static void sc8280xp_snd_shutdown(struct snd_pcm_substream *substream) 52 { 53 struct snd_soc_pcm_runtime *rtd = substream->private_data; 54 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 55 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 56 struct sdw_stream_runtime *sruntime = pdata->sruntime[cpu_dai->id]; 57 58 pdata->sruntime[cpu_dai->id] = NULL; 59 sdw_release_stream(sruntime); 60 } 61 62 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 63 struct snd_pcm_hw_params *params) 64 { 65 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 66 struct snd_interval *rate = hw_param_interval(params, 67 SNDRV_PCM_HW_PARAM_RATE); 68 struct snd_interval *channels = hw_param_interval(params, 69 SNDRV_PCM_HW_PARAM_CHANNELS); 70 71 rate->min = rate->max = 48000; 72 channels->min = 2; 73 channels->max = 2; 74 switch (cpu_dai->id) { 75 case TX_CODEC_DMA_TX_0: 76 case TX_CODEC_DMA_TX_1: 77 case TX_CODEC_DMA_TX_2: 78 case TX_CODEC_DMA_TX_3: 79 channels->min = 1; 80 break; 81 default: 82 break; 83 } 84 85 86 return 0; 87 } 88 89 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream, 90 struct snd_pcm_hw_params *params) 91 { 92 struct snd_soc_pcm_runtime *rtd = substream->private_data; 93 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 94 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 95 96 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 97 } 98 99 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream) 100 { 101 struct snd_soc_pcm_runtime *rtd = substream->private_data; 102 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 103 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 104 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 105 106 return qcom_snd_sdw_prepare(substream, sruntime, 107 &data->stream_prepared[cpu_dai->id]); 108 } 109 110 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream) 111 { 112 struct snd_soc_pcm_runtime *rtd = substream->private_data; 113 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 114 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 115 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 116 117 return qcom_snd_sdw_hw_free(substream, sruntime, 118 &data->stream_prepared[cpu_dai->id]); 119 } 120 121 static const struct snd_soc_ops sc8280xp_be_ops = { 122 .startup = qcom_snd_sdw_startup, 123 .shutdown = sc8280xp_snd_shutdown, 124 .hw_params = sc8280xp_snd_hw_params, 125 .hw_free = sc8280xp_snd_hw_free, 126 .prepare = sc8280xp_snd_prepare, 127 }; 128 129 static void sc8280xp_add_be_ops(struct snd_soc_card *card) 130 { 131 struct snd_soc_dai_link *link; 132 int i; 133 134 for_each_card_prelinks(card, i, link) { 135 if (link->no_pcm == 1) { 136 link->init = sc8280xp_snd_init; 137 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup; 138 link->ops = &sc8280xp_be_ops; 139 } 140 } 141 } 142 143 static int sc8280xp_platform_probe(struct platform_device *pdev) 144 { 145 struct snd_soc_card *card; 146 struct sc8280xp_snd_data *data; 147 struct device *dev = &pdev->dev; 148 int ret; 149 150 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 151 if (!card) 152 return -ENOMEM; 153 card->owner = THIS_MODULE; 154 /* Allocate the private data */ 155 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 156 if (!data) 157 return -ENOMEM; 158 159 card->dev = dev; 160 dev_set_drvdata(dev, card); 161 snd_soc_card_set_drvdata(card, data); 162 ret = qcom_snd_parse_of(card); 163 if (ret) 164 return ret; 165 166 card->driver_name = of_device_get_match_data(dev); 167 sc8280xp_add_be_ops(card); 168 return devm_snd_soc_register_card(dev, card); 169 } 170 171 static const struct of_device_id snd_sc8280xp_dt_match[] = { 172 {.compatible = "qcom,sc8280xp-sndcard", "sc8280xp"}, 173 {.compatible = "qcom,sm8450-sndcard", "sm8450"}, 174 {.compatible = "qcom,sm8550-sndcard", "sm8550"}, 175 {.compatible = "qcom,sm8650-sndcard", "sm8650"}, 176 {} 177 }; 178 179 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match); 180 181 static struct platform_driver snd_sc8280xp_driver = { 182 .probe = sc8280xp_platform_probe, 183 .driver = { 184 .name = "snd-sc8280xp", 185 .of_match_table = snd_sc8280xp_dt_match, 186 }, 187 }; 188 module_platform_driver(snd_sc8280xp_driver); 189 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 190 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver"); 191 MODULE_LICENSE("GPL"); 192