1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2022, Linaro Limited 3 4 #include <linux/module.h> 5 #include <linux/platform_device.h> 6 #include <linux/of_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 "sc8280xp" 18 19 struct sc8280xp_snd_data { 20 bool stream_prepared[AFE_PORT_MAX]; 21 struct snd_soc_card *card; 22 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX]; 23 struct snd_soc_jack jack; 24 bool jack_setup; 25 }; 26 27 static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd) 28 { 29 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 30 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 31 struct snd_soc_card *card = rtd->card; 32 33 switch (cpu_dai->id) { 34 case WSA_CODEC_DMA_RX_0: 35 case WSA_CODEC_DMA_RX_1: 36 /* 37 * Set limit of -3 dB on Digital Volume and 0 dB on PA Volume 38 * to reduce the risk of speaker damage until we have active 39 * speaker protection in place. 40 */ 41 snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 81); 42 snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 81); 43 snd_soc_limit_volume(card, "SpkrLeft PA Volume", 17); 44 snd_soc_limit_volume(card, "SpkrRight PA Volume", 17); 45 break; 46 default: 47 break; 48 } 49 50 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup); 51 } 52 53 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 54 struct snd_pcm_hw_params *params) 55 { 56 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 57 struct snd_interval *rate = hw_param_interval(params, 58 SNDRV_PCM_HW_PARAM_RATE); 59 struct snd_interval *channels = hw_param_interval(params, 60 SNDRV_PCM_HW_PARAM_CHANNELS); 61 62 rate->min = rate->max = 48000; 63 channels->min = 2; 64 channels->max = 2; 65 switch (cpu_dai->id) { 66 case TX_CODEC_DMA_TX_0: 67 case TX_CODEC_DMA_TX_1: 68 case TX_CODEC_DMA_TX_2: 69 case TX_CODEC_DMA_TX_3: 70 channels->min = 1; 71 break; 72 default: 73 break; 74 } 75 76 77 return 0; 78 } 79 80 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream, 81 struct snd_pcm_hw_params *params) 82 { 83 struct snd_soc_pcm_runtime *rtd = substream->private_data; 84 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 85 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 86 87 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 88 } 89 90 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream) 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 *data = snd_soc_card_get_drvdata(rtd->card); 95 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 96 97 return qcom_snd_sdw_prepare(substream, sruntime, 98 &data->stream_prepared[cpu_dai->id]); 99 } 100 101 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream) 102 { 103 struct snd_soc_pcm_runtime *rtd = substream->private_data; 104 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 105 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 106 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 107 108 return qcom_snd_sdw_hw_free(substream, sruntime, 109 &data->stream_prepared[cpu_dai->id]); 110 } 111 112 static const struct snd_soc_ops sc8280xp_be_ops = { 113 .hw_params = sc8280xp_snd_hw_params, 114 .hw_free = sc8280xp_snd_hw_free, 115 .prepare = sc8280xp_snd_prepare, 116 }; 117 118 static void sc8280xp_add_be_ops(struct snd_soc_card *card) 119 { 120 struct snd_soc_dai_link *link; 121 int i; 122 123 for_each_card_prelinks(card, i, link) { 124 if (link->no_pcm == 1) { 125 link->init = sc8280xp_snd_init; 126 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup; 127 link->ops = &sc8280xp_be_ops; 128 } 129 } 130 } 131 132 static int sc8280xp_platform_probe(struct platform_device *pdev) 133 { 134 struct snd_soc_card *card; 135 struct sc8280xp_snd_data *data; 136 struct device *dev = &pdev->dev; 137 int ret; 138 139 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 140 if (!card) 141 return -ENOMEM; 142 card->owner = THIS_MODULE; 143 /* Allocate the private data */ 144 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 145 if (!data) 146 return -ENOMEM; 147 148 card->dev = dev; 149 dev_set_drvdata(dev, card); 150 snd_soc_card_set_drvdata(card, data); 151 ret = qcom_snd_parse_of(card); 152 if (ret) 153 return ret; 154 155 card->driver_name = DRIVER_NAME; 156 sc8280xp_add_be_ops(card); 157 return devm_snd_soc_register_card(dev, card); 158 } 159 160 static const struct of_device_id snd_sc8280xp_dt_match[] = { 161 {.compatible = "qcom,sc8280xp-sndcard",}, 162 {} 163 }; 164 165 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match); 166 167 static struct platform_driver snd_sc8280xp_driver = { 168 .probe = sc8280xp_platform_probe, 169 .driver = { 170 .name = "snd-sc8280xp", 171 .of_match_table = snd_sc8280xp_dt_match, 172 }, 173 }; 174 module_platform_driver(snd_sc8280xp_driver); 175 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 176 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver"); 177 MODULE_LICENSE("GPL v2"); 178