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 0dB on Digital Volume for Speakers, 38 * this can prevent damage of speakers to some extent without 39 * active speaker protection 40 */ 41 snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 84); 42 snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 84); 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 int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 52 struct snd_pcm_hw_params *params) 53 { 54 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 55 struct snd_interval *rate = hw_param_interval(params, 56 SNDRV_PCM_HW_PARAM_RATE); 57 struct snd_interval *channels = hw_param_interval(params, 58 SNDRV_PCM_HW_PARAM_CHANNELS); 59 60 rate->min = rate->max = 48000; 61 channels->min = 2; 62 channels->max = 2; 63 switch (cpu_dai->id) { 64 case TX_CODEC_DMA_TX_0: 65 case TX_CODEC_DMA_TX_1: 66 case TX_CODEC_DMA_TX_2: 67 case TX_CODEC_DMA_TX_3: 68 channels->min = 1; 69 break; 70 default: 71 break; 72 } 73 74 75 return 0; 76 } 77 78 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream, 79 struct snd_pcm_hw_params *params) 80 { 81 struct snd_soc_pcm_runtime *rtd = substream->private_data; 82 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 83 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 84 85 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 86 } 87 88 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream) 89 { 90 struct snd_soc_pcm_runtime *rtd = substream->private_data; 91 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 92 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 93 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 94 95 return qcom_snd_sdw_prepare(substream, sruntime, 96 &data->stream_prepared[cpu_dai->id]); 97 } 98 99 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream) 100 { 101 struct snd_soc_pcm_runtime *rtd = substream->private_data; 102 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 103 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 104 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 105 106 return qcom_snd_sdw_hw_free(substream, sruntime, 107 &data->stream_prepared[cpu_dai->id]); 108 } 109 110 static const struct snd_soc_ops sc8280xp_be_ops = { 111 .hw_params = sc8280xp_snd_hw_params, 112 .hw_free = sc8280xp_snd_hw_free, 113 .prepare = sc8280xp_snd_prepare, 114 }; 115 116 static void sc8280xp_add_be_ops(struct snd_soc_card *card) 117 { 118 struct snd_soc_dai_link *link; 119 int i; 120 121 for_each_card_prelinks(card, i, link) { 122 if (link->no_pcm == 1) { 123 link->init = sc8280xp_snd_init; 124 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup; 125 link->ops = &sc8280xp_be_ops; 126 } 127 } 128 } 129 130 static int sc8280xp_platform_probe(struct platform_device *pdev) 131 { 132 struct snd_soc_card *card; 133 struct sc8280xp_snd_data *data; 134 struct device *dev = &pdev->dev; 135 int ret; 136 137 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 138 if (!card) 139 return -ENOMEM; 140 card->owner = THIS_MODULE; 141 /* Allocate the private data */ 142 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 143 if (!data) 144 return -ENOMEM; 145 146 card->dev = dev; 147 dev_set_drvdata(dev, card); 148 snd_soc_card_set_drvdata(card, data); 149 ret = qcom_snd_parse_of(card); 150 if (ret) 151 return ret; 152 153 card->driver_name = DRIVER_NAME; 154 sc8280xp_add_be_ops(card); 155 return devm_snd_soc_register_card(dev, card); 156 } 157 158 static const struct of_device_id snd_sc8280xp_dt_match[] = { 159 {.compatible = "qcom,sc8280xp-sndcard",}, 160 {} 161 }; 162 163 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match); 164 165 static struct platform_driver snd_sc8280xp_driver = { 166 .probe = sc8280xp_platform_probe, 167 .driver = { 168 .name = "snd-sc8280xp", 169 .of_match_table = snd_sc8280xp_dt_match, 170 }, 171 }; 172 module_platform_driver(snd_sc8280xp_driver); 173 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 174 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver"); 175 MODULE_LICENSE("GPL v2"); 176