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 16 #define DRIVER_NAME "sc8280xp" 17 18 struct sc8280xp_snd_data { 19 bool stream_prepared[AFE_PORT_MAX]; 20 struct snd_soc_card *card; 21 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX]; 22 struct snd_soc_jack jack; 23 bool jack_setup; 24 }; 25 26 static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd) 27 { 28 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 29 30 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup); 31 } 32 33 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 34 struct snd_pcm_hw_params *params) 35 { 36 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 37 struct snd_interval *rate = hw_param_interval(params, 38 SNDRV_PCM_HW_PARAM_RATE); 39 struct snd_interval *channels = hw_param_interval(params, 40 SNDRV_PCM_HW_PARAM_CHANNELS); 41 42 rate->min = rate->max = 48000; 43 channels->min = 2; 44 channels->max = 2; 45 switch (cpu_dai->id) { 46 case TX_CODEC_DMA_TX_0: 47 case TX_CODEC_DMA_TX_1: 48 case TX_CODEC_DMA_TX_2: 49 case TX_CODEC_DMA_TX_3: 50 channels->min = 1; 51 break; 52 default: 53 break; 54 } 55 56 57 return 0; 58 } 59 60 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream, 61 struct snd_pcm_hw_params *params) 62 { 63 struct snd_soc_pcm_runtime *rtd = substream->private_data; 64 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 65 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 66 67 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 68 } 69 70 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream) 71 { 72 struct snd_soc_pcm_runtime *rtd = substream->private_data; 73 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 74 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 75 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 76 77 return qcom_snd_sdw_prepare(substream, sruntime, 78 &data->stream_prepared[cpu_dai->id]); 79 } 80 81 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream) 82 { 83 struct snd_soc_pcm_runtime *rtd = substream->private_data; 84 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 85 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 86 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 87 88 return qcom_snd_sdw_hw_free(substream, sruntime, 89 &data->stream_prepared[cpu_dai->id]); 90 } 91 92 static const struct snd_soc_ops sc8280xp_be_ops = { 93 .hw_params = sc8280xp_snd_hw_params, 94 .hw_free = sc8280xp_snd_hw_free, 95 .prepare = sc8280xp_snd_prepare, 96 }; 97 98 static void sc8280xp_add_be_ops(struct snd_soc_card *card) 99 { 100 struct snd_soc_dai_link *link; 101 int i; 102 103 for_each_card_prelinks(card, i, link) { 104 if (link->no_pcm == 1) { 105 link->init = sc8280xp_snd_init; 106 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup; 107 link->ops = &sc8280xp_be_ops; 108 } 109 } 110 } 111 112 static int sc8280xp_platform_probe(struct platform_device *pdev) 113 { 114 struct snd_soc_card *card; 115 struct sc8280xp_snd_data *data; 116 struct device *dev = &pdev->dev; 117 int ret; 118 119 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 120 if (!card) 121 return -ENOMEM; 122 card->owner = THIS_MODULE; 123 /* Allocate the private data */ 124 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 125 if (!data) 126 return -ENOMEM; 127 128 card->dev = dev; 129 dev_set_drvdata(dev, card); 130 snd_soc_card_set_drvdata(card, data); 131 ret = qcom_snd_parse_of(card); 132 if (ret) 133 return ret; 134 135 card->driver_name = DRIVER_NAME; 136 sc8280xp_add_be_ops(card); 137 return devm_snd_soc_register_card(dev, card); 138 } 139 140 static const struct of_device_id snd_sc8280xp_dt_match[] = { 141 {.compatible = "qcom,sc8280xp-sndcard",}, 142 {} 143 }; 144 145 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match); 146 147 static struct platform_driver snd_sc8280xp_driver = { 148 .probe = sc8280xp_platform_probe, 149 .driver = { 150 .name = "snd-sc8280xp", 151 .of_match_table = snd_sc8280xp_dt_match, 152 }, 153 }; 154 module_platform_driver(snd_sc8280xp_driver); 155 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 156 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver"); 157 MODULE_LICENSE("GPL v2"); 158