1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2020, 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 "sm8250" 18 #define MI2S_BCLK_RATE 1536000 19 20 struct sm8250_snd_data { 21 bool stream_prepared[AFE_PORT_MAX]; 22 struct snd_soc_card *card; 23 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX]; 24 struct snd_soc_jack jack; 25 bool jack_setup; 26 }; 27 28 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd) 29 { 30 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 31 32 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup); 33 } 34 35 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 36 struct snd_pcm_hw_params *params) 37 { 38 struct snd_interval *rate = hw_param_interval(params, 39 SNDRV_PCM_HW_PARAM_RATE); 40 struct snd_interval *channels = hw_param_interval(params, 41 SNDRV_PCM_HW_PARAM_CHANNELS); 42 43 rate->min = rate->max = 48000; 44 channels->min = channels->max = 2; 45 46 return 0; 47 } 48 49 static int sm8250_snd_startup(struct snd_pcm_substream *substream) 50 { 51 unsigned int fmt = SND_SOC_DAIFMT_BP_FP; 52 unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC; 53 struct snd_soc_pcm_runtime *rtd = substream->private_data; 54 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 55 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 56 57 switch (cpu_dai->id) { 58 case TERTIARY_MI2S_RX: 59 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S; 60 snd_soc_dai_set_sysclk(cpu_dai, 61 Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT, 62 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); 63 snd_soc_dai_set_fmt(cpu_dai, fmt); 64 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); 65 break; 66 default: 67 break; 68 } 69 return 0; 70 } 71 72 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream, 73 struct snd_pcm_hw_params *params) 74 { 75 struct snd_soc_pcm_runtime *rtd = substream->private_data; 76 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 77 struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 78 79 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]); 80 } 81 82 static int sm8250_snd_prepare(struct snd_pcm_substream *substream) 83 { 84 struct snd_soc_pcm_runtime *rtd = substream->private_data; 85 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 86 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 87 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 88 89 return qcom_snd_sdw_prepare(substream, sruntime, 90 &data->stream_prepared[cpu_dai->id]); 91 } 92 93 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream) 94 { 95 struct snd_soc_pcm_runtime *rtd = substream->private_data; 96 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 97 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 98 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 99 100 return qcom_snd_sdw_hw_free(substream, sruntime, 101 &data->stream_prepared[cpu_dai->id]); 102 } 103 104 static const struct snd_soc_ops sm8250_be_ops = { 105 .startup = sm8250_snd_startup, 106 .hw_params = sm8250_snd_hw_params, 107 .hw_free = sm8250_snd_hw_free, 108 .prepare = sm8250_snd_prepare, 109 }; 110 111 static void sm8250_add_be_ops(struct snd_soc_card *card) 112 { 113 struct snd_soc_dai_link *link; 114 int i; 115 116 for_each_card_prelinks(card, i, link) { 117 if (link->no_pcm == 1) { 118 link->init = sm8250_snd_init; 119 link->be_hw_params_fixup = sm8250_be_hw_params_fixup; 120 link->ops = &sm8250_be_ops; 121 } 122 } 123 } 124 125 static int sm8250_platform_probe(struct platform_device *pdev) 126 { 127 struct snd_soc_card *card; 128 struct sm8250_snd_data *data; 129 struct device *dev = &pdev->dev; 130 int ret; 131 132 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 133 if (!card) 134 return -ENOMEM; 135 136 card->owner = THIS_MODULE; 137 /* Allocate the private data */ 138 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 139 if (!data) 140 return -ENOMEM; 141 142 card->dev = dev; 143 dev_set_drvdata(dev, card); 144 snd_soc_card_set_drvdata(card, data); 145 ret = qcom_snd_parse_of(card); 146 if (ret) 147 return ret; 148 149 card->driver_name = DRIVER_NAME; 150 sm8250_add_be_ops(card); 151 return devm_snd_soc_register_card(dev, card); 152 } 153 154 static const struct of_device_id snd_sm8250_dt_match[] = { 155 {.compatible = "qcom,sm8250-sndcard"}, 156 {.compatible = "qcom,qrb5165-rb5-sndcard"}, 157 {} 158 }; 159 160 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match); 161 162 static struct platform_driver snd_sm8250_driver = { 163 .probe = sm8250_platform_probe, 164 .driver = { 165 .name = "snd-sm8250", 166 .of_match_table = snd_sm8250_dt_match, 167 }, 168 }; 169 module_platform_driver(snd_sm8250_driver); 170 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 171 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver"); 172 MODULE_LICENSE("GPL v2"); 173