1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. 4 // 5 // ALSA SoC Machine driver for sc7280 6 7 #include <linux/input.h> 8 #include <linux/module.h> 9 #include <linux/of_device.h> 10 #include <linux/platform_device.h> 11 #include <sound/core.h> 12 #include <sound/jack.h> 13 #include <sound/pcm.h> 14 #include <sound/soc.h> 15 #include <linux/soundwire/sdw.h> 16 17 #include "common.h" 18 #include "lpass.h" 19 20 struct sc7280_snd_data { 21 struct snd_soc_card card; 22 struct sdw_stream_runtime *sruntime[LPASS_MAX_PORTS]; 23 struct snd_soc_jack hs_jack; 24 struct snd_soc_jack hdmi_jack; 25 bool jack_setup; 26 bool stream_prepared[LPASS_MAX_PORTS]; 27 }; 28 29 static void sc7280_jack_free(struct snd_jack *jack) 30 { 31 struct snd_soc_component *component = jack->private_data; 32 33 snd_soc_component_set_jack(component, NULL, NULL); 34 } 35 36 static int sc7280_headset_init(struct snd_soc_pcm_runtime *rtd) 37 { 38 struct snd_soc_card *card = rtd->card; 39 struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card); 40 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 41 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 42 struct snd_soc_component *component = codec_dai->component; 43 struct snd_jack *jack; 44 int rval, i; 45 46 if (!pdata->jack_setup) { 47 rval = snd_soc_card_jack_new(card, "Headset Jack", 48 SND_JACK_HEADSET | SND_JACK_LINEOUT | 49 SND_JACK_MECHANICAL | 50 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 51 SND_JACK_BTN_2 | SND_JACK_BTN_3 | 52 SND_JACK_BTN_4 | SND_JACK_BTN_5, 53 &pdata->hs_jack, NULL, 0); 54 55 if (rval < 0) { 56 dev_err(card->dev, "Unable to add Headset Jack\n"); 57 return rval; 58 } 59 60 jack = pdata->hs_jack.jack; 61 62 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 63 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); 64 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP); 65 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); 66 67 jack->private_data = component; 68 jack->private_free = sc7280_jack_free; 69 pdata->jack_setup = true; 70 } 71 switch (cpu_dai->id) { 72 case LPASS_CDC_DMA_RX0: 73 case LPASS_CDC_DMA_TX3: 74 for_each_rtd_codec_dais(rtd, i, codec_dai) { 75 rval = snd_soc_component_set_jack(component, &pdata->hs_jack, NULL); 76 if (rval != 0 && rval != -ENOTSUPP) { 77 dev_err(card->dev, "Failed to set jack: %d\n", rval); 78 return rval; 79 } 80 } 81 break; 82 default: 83 break; 84 } 85 86 return 0; 87 } 88 89 static int sc7280_hdmi_init(struct snd_soc_pcm_runtime *rtd) 90 { 91 struct snd_soc_card *card = rtd->card; 92 struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card); 93 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 94 struct snd_soc_component *component = codec_dai->component; 95 struct snd_jack *jack; 96 int rval; 97 98 rval = snd_soc_card_jack_new(card, "HDMI Jack", SND_JACK_LINEOUT, 99 &pdata->hdmi_jack, NULL, 0); 100 101 if (rval < 0) { 102 dev_err(card->dev, "Unable to add HDMI Jack\n"); 103 return rval; 104 } 105 106 jack = pdata->hdmi_jack.jack; 107 jack->private_data = component; 108 jack->private_free = sc7280_jack_free; 109 110 return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL); 111 } 112 113 static int sc7280_init(struct snd_soc_pcm_runtime *rtd) 114 { 115 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 116 117 switch (cpu_dai->id) { 118 case LPASS_CDC_DMA_TX3: 119 return sc7280_headset_init(rtd); 120 case LPASS_CDC_DMA_RX0: 121 case LPASS_CDC_DMA_VA_TX0: 122 case MI2S_SECONDARY: 123 return 0; 124 case LPASS_DP_RX: 125 return sc7280_hdmi_init(rtd); 126 default: 127 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); 128 } 129 130 return -EINVAL; 131 } 132 133 static int sc7280_snd_hw_params(struct snd_pcm_substream *substream, 134 struct snd_pcm_hw_params *params) 135 { 136 struct snd_pcm_runtime *runtime = substream->runtime; 137 struct snd_soc_pcm_runtime *rtd = substream->private_data; 138 struct snd_soc_dai *codec_dai; 139 const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 140 struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); 141 struct sdw_stream_runtime *sruntime; 142 int i; 143 144 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2); 145 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, 48000, 48000); 146 147 switch (cpu_dai->id) { 148 case LPASS_CDC_DMA_TX3: 149 case LPASS_CDC_DMA_RX0: 150 for_each_rtd_codec_dais(rtd, i, codec_dai) { 151 sruntime = snd_soc_dai_get_stream(codec_dai, substream->stream); 152 if (sruntime != ERR_PTR(-ENOTSUPP)) 153 pdata->sruntime[cpu_dai->id] = sruntime; 154 } 155 break; 156 } 157 158 return 0; 159 } 160 161 static int sc7280_snd_swr_prepare(struct snd_pcm_substream *substream) 162 { 163 struct snd_soc_pcm_runtime *rtd = substream->private_data; 164 const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 165 struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 166 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 167 int ret; 168 169 if (!sruntime) 170 return 0; 171 172 if (data->stream_prepared[cpu_dai->id]) { 173 sdw_disable_stream(sruntime); 174 sdw_deprepare_stream(sruntime); 175 data->stream_prepared[cpu_dai->id] = false; 176 } 177 178 ret = sdw_prepare_stream(sruntime); 179 if (ret) 180 return ret; 181 182 ret = sdw_enable_stream(sruntime); 183 if (ret) { 184 sdw_deprepare_stream(sruntime); 185 return ret; 186 } 187 data->stream_prepared[cpu_dai->id] = true; 188 189 return ret; 190 } 191 192 static int sc7280_snd_prepare(struct snd_pcm_substream *substream) 193 { 194 struct snd_soc_pcm_runtime *rtd = substream->private_data; 195 const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 196 197 switch (cpu_dai->id) { 198 case LPASS_CDC_DMA_RX0: 199 case LPASS_CDC_DMA_TX3: 200 return sc7280_snd_swr_prepare(substream); 201 default: 202 break; 203 } 204 205 return 0; 206 } 207 208 static int sc7280_snd_hw_free(struct snd_pcm_substream *substream) 209 { 210 struct snd_soc_pcm_runtime *rtd = substream->private_data; 211 struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card); 212 const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 213 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; 214 215 switch (cpu_dai->id) { 216 case LPASS_CDC_DMA_RX0: 217 case LPASS_CDC_DMA_TX3: 218 if (sruntime && data->stream_prepared[cpu_dai->id]) { 219 sdw_disable_stream(sruntime); 220 sdw_deprepare_stream(sruntime); 221 data->stream_prepared[cpu_dai->id] = false; 222 } 223 break; 224 default: 225 break; 226 } 227 return 0; 228 } 229 230 static const struct snd_soc_ops sc7280_ops = { 231 .hw_params = sc7280_snd_hw_params, 232 .hw_free = sc7280_snd_hw_free, 233 .prepare = sc7280_snd_prepare, 234 }; 235 236 static int sc7280_snd_platform_probe(struct platform_device *pdev) 237 { 238 struct snd_soc_card *card; 239 struct sc7280_snd_data *data; 240 struct device *dev = &pdev->dev; 241 struct snd_soc_dai_link *link; 242 int ret, i; 243 244 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 245 if (!data) 246 return -ENOMEM; 247 248 card = &data->card; 249 snd_soc_card_set_drvdata(card, data); 250 251 card->owner = THIS_MODULE; 252 card->driver_name = "SC7280"; 253 card->dev = dev; 254 255 ret = qcom_snd_parse_of(card); 256 if (ret) 257 return ret; 258 259 for_each_card_prelinks(card, i, link) { 260 link->init = sc7280_init; 261 link->ops = &sc7280_ops; 262 } 263 264 return devm_snd_soc_register_card(dev, card); 265 } 266 267 static const struct of_device_id sc7280_snd_device_id[] = { 268 { .compatible = "google,sc7280-herobrine" }, 269 {} 270 }; 271 MODULE_DEVICE_TABLE(of, sc7280_snd_device_id); 272 273 static struct platform_driver sc7280_snd_driver = { 274 .probe = sc7280_snd_platform_probe, 275 .driver = { 276 .name = "msm-snd-sc7280", 277 .of_match_table = sc7280_snd_device_id, 278 .pm = &snd_soc_pm_ops, 279 }, 280 }; 281 module_platform_driver(sc7280_snd_driver); 282 283 MODULE_DESCRIPTION("sc7280 ASoC Machine Driver"); 284 MODULE_LICENSE("GPL"); 285