1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation 4 // 5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com> 6 // Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com> 7 // 8 9 #include <linux/input.h> 10 #include <linux/module.h> 11 #include <linux/platform_device.h> 12 #include <sound/core.h> 13 #include <sound/jack.h> 14 #include <sound/pcm.h> 15 #include <sound/pcm_params.h> 16 #include <sound/soc.h> 17 #include <sound/soc-acpi.h> 18 #include "../../../codecs/nau8825.h" 19 #include "../utils.h" 20 21 #define SKL_NUVOTON_CODEC_DAI "nau8825-hifi" 22 23 static int 24 avs_nau8825_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event) 25 { 26 struct snd_soc_dapm_context *dapm = w->dapm; 27 struct snd_soc_card *card = dapm->card; 28 struct snd_soc_dai *codec_dai; 29 int ret; 30 31 codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI); 32 if (!codec_dai) { 33 dev_err(card->dev, "Codec dai not found\n"); 34 return -EINVAL; 35 } 36 37 if (SND_SOC_DAPM_EVENT_ON(event)) 38 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_MCLK, 24000000, 39 SND_SOC_CLOCK_IN); 40 else 41 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN); 42 if (ret < 0) 43 dev_err(card->dev, "Set sysclk failed: %d\n", ret); 44 45 return ret; 46 } 47 48 static const struct snd_kcontrol_new card_controls[] = { 49 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 50 SOC_DAPM_PIN_SWITCH("Headset Mic"), 51 }; 52 53 static const struct snd_soc_dapm_widget card_widgets[] = { 54 SND_SOC_DAPM_HP("Headphone Jack", NULL), 55 SND_SOC_DAPM_MIC("Headset Mic", NULL), 56 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_nau8825_clock_control, 57 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 58 }; 59 60 static const struct snd_soc_dapm_route card_base_routes[] = { 61 { "Headphone Jack", NULL, "HPOL" }, 62 { "Headphone Jack", NULL, "HPOR" }, 63 64 { "MIC", NULL, "Headset Mic" }, 65 66 { "Headphone Jack", NULL, "Platform Clock" }, 67 { "Headset Mic", NULL, "Platform Clock" }, 68 }; 69 70 static const struct snd_soc_jack_pin card_headset_pins[] = { 71 { 72 .pin = "Headphone Jack", 73 .mask = SND_JACK_HEADPHONE, 74 }, 75 { 76 .pin = "Headset Mic", 77 .mask = SND_JACK_MICROPHONE, 78 }, 79 }; 80 81 static int avs_nau8825_codec_init(struct snd_soc_pcm_runtime *runtime) 82 { 83 struct snd_soc_card *card = runtime->card; 84 struct snd_soc_jack_pin *pins; 85 struct snd_soc_jack *jack; 86 int num_pins, ret; 87 88 jack = snd_soc_card_get_drvdata(card); 89 num_pins = ARRAY_SIZE(card_headset_pins); 90 91 pins = devm_kmemdup_array(card->dev, card_headset_pins, num_pins, 92 sizeof(card_headset_pins[0]), GFP_KERNEL); 93 if (!pins) 94 return -ENOMEM; 95 96 /* 97 * 4 buttons here map to the google Reference headset. 98 * The use of these buttons can be decided by the user space. 99 */ 100 ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET | SND_JACK_BTN_0 | 101 SND_JACK_BTN_1 | SND_JACK_BTN_2 | SND_JACK_BTN_3, 102 jack, pins, num_pins); 103 if (ret) 104 return ret; 105 106 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 107 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); 108 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP); 109 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); 110 111 return snd_soc_component_set_jack(snd_soc_rtd_to_codec(runtime, 0)->component, jack, NULL); 112 } 113 114 static void avs_nau8825_codec_exit(struct snd_soc_pcm_runtime *rtd) 115 { 116 snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL); 117 } 118 119 static int 120 avs_nau8825_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params) 121 { 122 struct snd_interval *rate, *channels; 123 struct snd_mask *fmt; 124 125 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 126 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 127 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 128 129 /* The ADSP will convert the FE rate to 48k, stereo */ 130 rate->min = rate->max = 48000; 131 channels->min = channels->max = 2; 132 133 /* set SSP to 24 bit */ 134 snd_mask_none(fmt); 135 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 136 137 return 0; 138 } 139 140 static int avs_nau8825_trigger(struct snd_pcm_substream *substream, int cmd) 141 { 142 struct snd_pcm_runtime *runtime = substream->runtime; 143 struct snd_soc_pcm_runtime *rtm = snd_soc_substream_to_rtd(substream); 144 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtm, 0); 145 int ret = 0; 146 147 switch (cmd) { 148 case SNDRV_PCM_TRIGGER_START: 149 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN); 150 if (ret < 0) { 151 dev_err(codec_dai->dev, "can't set FS clock %d\n", ret); 152 break; 153 } 154 155 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256); 156 if (ret < 0) 157 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret); 158 break; 159 160 case SNDRV_PCM_TRIGGER_RESUME: 161 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256); 162 if (ret < 0) 163 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret); 164 break; 165 } 166 167 return ret; 168 } 169 170 171 static const struct snd_soc_ops avs_nau8825_ops = { 172 .trigger = avs_nau8825_trigger, 173 }; 174 175 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 176 int tdm_slot, struct snd_soc_dai_link **dai_link) 177 { 178 struct snd_soc_dai_link_component *platform; 179 struct snd_soc_dai_link *dl; 180 181 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 182 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 183 if (!dl || !platform) 184 return -ENOMEM; 185 186 platform->name = platform_name; 187 188 dl->name = devm_kasprintf(dev, GFP_KERNEL, 189 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 190 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 191 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 192 if (!dl->name || !dl->cpus || !dl->codecs) 193 return -ENOMEM; 194 195 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 196 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 197 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-10508825:00"); 198 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, SKL_NUVOTON_CODEC_DAI); 199 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name) 200 return -ENOMEM; 201 202 dl->num_cpus = 1; 203 dl->num_codecs = 1; 204 dl->platforms = platform; 205 dl->num_platforms = 1; 206 dl->id = 0; 207 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC; 208 dl->init = avs_nau8825_codec_init; 209 dl->exit = avs_nau8825_codec_exit; 210 dl->be_hw_params_fixup = avs_nau8825_be_fixup; 211 dl->ops = &avs_nau8825_ops; 212 dl->nonatomic = 1; 213 dl->no_pcm = 1; 214 215 *dai_link = dl; 216 217 return 0; 218 } 219 220 static int avs_card_suspend_pre(struct snd_soc_card *card) 221 { 222 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI); 223 224 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL); 225 } 226 227 static int avs_card_resume_post(struct snd_soc_card *card) 228 { 229 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI); 230 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card); 231 int stream = SNDRV_PCM_STREAM_PLAYBACK; 232 233 if (!codec_dai) { 234 dev_err(card->dev, "Codec dai not found\n"); 235 return -EINVAL; 236 } 237 238 if (snd_soc_dai_stream_active(codec_dai, stream) && 239 snd_soc_dai_get_widget(codec_dai, stream)->active) 240 snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN); 241 242 return snd_soc_component_set_jack(codec_dai->component, jack, NULL); 243 } 244 245 static int avs_nau8825_probe(struct platform_device *pdev) 246 { 247 struct snd_soc_dai_link *dai_link; 248 struct snd_soc_acpi_mach *mach; 249 struct snd_soc_card *card; 250 struct snd_soc_jack *jack; 251 struct device *dev = &pdev->dev; 252 const char *pname; 253 int ssp_port, tdm_slot, ret; 254 255 mach = dev_get_platdata(dev); 256 pname = mach->mach_params.platform; 257 258 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot); 259 if (ret) 260 return ret; 261 262 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link); 263 if (ret) { 264 dev_err(dev, "Failed to create dai link: %d", ret); 265 return ret; 266 } 267 268 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL); 269 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 270 if (!jack || !card) 271 return -ENOMEM; 272 273 card->name = "avs_nau8825"; 274 card->dev = dev; 275 card->owner = THIS_MODULE; 276 card->suspend_pre = avs_card_suspend_pre; 277 card->resume_post = avs_card_resume_post; 278 card->dai_link = dai_link; 279 card->num_links = 1; 280 card->controls = card_controls; 281 card->num_controls = ARRAY_SIZE(card_controls); 282 card->dapm_widgets = card_widgets; 283 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 284 card->dapm_routes = card_base_routes; 285 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 286 card->fully_routed = true; 287 snd_soc_card_set_drvdata(card, jack); 288 289 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 290 if (ret) 291 return ret; 292 293 return devm_snd_soc_register_card(dev, card); 294 } 295 296 static const struct platform_device_id avs_nau8825_driver_ids[] = { 297 { 298 .name = "avs_nau8825", 299 }, 300 {}, 301 }; 302 MODULE_DEVICE_TABLE(platform, avs_nau8825_driver_ids); 303 304 static struct platform_driver avs_nau8825_driver = { 305 .probe = avs_nau8825_probe, 306 .driver = { 307 .name = "avs_nau8825", 308 .pm = &snd_soc_pm_ops, 309 }, 310 .id_table = avs_nau8825_driver_ids, 311 }; 312 313 module_platform_driver(avs_nau8825_driver) 314 315 MODULE_DESCRIPTION("Intel nau8825 machine driver"); 316 MODULE_LICENSE("GPL"); 317