1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved. 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 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(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL); 92 if (!pins) 93 return -ENOMEM; 94 95 /* 96 * 4 buttons here map to the google Reference headset. 97 * The use of these buttons can be decided by the user space. 98 */ 99 ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | SND_JACK_BTN_0 | 100 SND_JACK_BTN_1 | SND_JACK_BTN_2 | SND_JACK_BTN_3, 101 jack, pins, num_pins); 102 if (ret) 103 return ret; 104 105 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 106 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); 107 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP); 108 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); 109 110 return snd_soc_component_set_jack(snd_soc_rtd_to_codec(runtime, 0)->component, jack, NULL); 111 } 112 113 static void avs_nau8825_codec_exit(struct snd_soc_pcm_runtime *rtd) 114 { 115 snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL); 116 } 117 118 static int 119 avs_nau8825_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params) 120 { 121 struct snd_interval *rate, *channels; 122 struct snd_mask *fmt; 123 124 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 125 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 126 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 127 128 /* The ADSP will convert the FE rate to 48k, stereo */ 129 rate->min = rate->max = 48000; 130 channels->min = channels->max = 2; 131 132 /* set SSP to 24 bit */ 133 snd_mask_none(fmt); 134 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 135 136 return 0; 137 } 138 139 static int avs_nau8825_trigger(struct snd_pcm_substream *substream, int cmd) 140 { 141 struct snd_pcm_runtime *runtime = substream->runtime; 142 struct snd_soc_pcm_runtime *rtm = snd_soc_substream_to_rtd(substream); 143 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtm, 0); 144 int ret = 0; 145 146 switch (cmd) { 147 case SNDRV_PCM_TRIGGER_START: 148 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN); 149 if (ret < 0) { 150 dev_err(codec_dai->dev, "can't set FS clock %d\n", ret); 151 break; 152 } 153 154 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256); 155 if (ret < 0) 156 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret); 157 break; 158 159 case SNDRV_PCM_TRIGGER_RESUME: 160 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256); 161 if (ret < 0) 162 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret); 163 break; 164 } 165 166 return ret; 167 } 168 169 170 static const struct snd_soc_ops avs_nau8825_ops = { 171 .trigger = avs_nau8825_trigger, 172 }; 173 174 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 175 int tdm_slot, struct snd_soc_dai_link **dai_link) 176 { 177 struct snd_soc_dai_link_component *platform; 178 struct snd_soc_dai_link *dl; 179 180 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 181 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 182 if (!dl || !platform) 183 return -ENOMEM; 184 185 platform->name = platform_name; 186 187 dl->name = devm_kasprintf(dev, GFP_KERNEL, 188 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 189 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 190 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 191 if (!dl->name || !dl->cpus || !dl->codecs) 192 return -ENOMEM; 193 194 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 195 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 196 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-10508825:00"); 197 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, SKL_NUVOTON_CODEC_DAI); 198 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name) 199 return -ENOMEM; 200 201 dl->num_cpus = 1; 202 dl->num_codecs = 1; 203 dl->platforms = platform; 204 dl->num_platforms = 1; 205 dl->id = 0; 206 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS; 207 dl->init = avs_nau8825_codec_init; 208 dl->exit = avs_nau8825_codec_exit; 209 dl->be_hw_params_fixup = avs_nau8825_be_fixup; 210 dl->ops = &avs_nau8825_ops; 211 dl->nonatomic = 1; 212 dl->no_pcm = 1; 213 dl->dpcm_capture = 1; 214 dl->dpcm_playback = 1; 215 216 *dai_link = dl; 217 218 return 0; 219 } 220 221 static int avs_card_suspend_pre(struct snd_soc_card *card) 222 { 223 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI); 224 225 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL); 226 } 227 228 static int avs_card_resume_post(struct snd_soc_card *card) 229 { 230 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI); 231 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card); 232 int stream = SNDRV_PCM_STREAM_PLAYBACK; 233 234 if (!codec_dai) { 235 dev_err(card->dev, "Codec dai not found\n"); 236 return -EINVAL; 237 } 238 239 if (snd_soc_dai_stream_active(codec_dai, stream) && 240 snd_soc_dai_get_widget(codec_dai, stream)->active) 241 snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN); 242 243 return snd_soc_component_set_jack(codec_dai->component, jack, NULL); 244 } 245 246 static int avs_nau8825_probe(struct platform_device *pdev) 247 { 248 struct snd_soc_dai_link *dai_link; 249 struct snd_soc_acpi_mach *mach; 250 struct snd_soc_card *card; 251 struct snd_soc_jack *jack; 252 struct device *dev = &pdev->dev; 253 const char *pname; 254 int ssp_port, tdm_slot, ret; 255 256 mach = dev_get_platdata(dev); 257 pname = mach->mach_params.platform; 258 259 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot); 260 if (ret) 261 return ret; 262 263 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link); 264 if (ret) { 265 dev_err(dev, "Failed to create dai link: %d", ret); 266 return ret; 267 } 268 269 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL); 270 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 271 if (!jack || !card) 272 return -ENOMEM; 273 274 card->name = "avs_nau8825"; 275 card->dev = dev; 276 card->owner = THIS_MODULE; 277 card->suspend_pre = avs_card_suspend_pre; 278 card->resume_post = avs_card_resume_post; 279 card->dai_link = dai_link; 280 card->num_links = 1; 281 card->controls = card_controls; 282 card->num_controls = ARRAY_SIZE(card_controls); 283 card->dapm_widgets = card_widgets; 284 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 285 card->dapm_routes = card_base_routes; 286 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 287 card->fully_routed = true; 288 snd_soc_card_set_drvdata(card, jack); 289 290 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 291 if (ret) 292 return ret; 293 294 return devm_snd_soc_register_card(dev, card); 295 } 296 297 static const struct platform_device_id avs_nau8825_driver_ids[] = { 298 { 299 .name = "avs_nau8825", 300 }, 301 {}, 302 }; 303 MODULE_DEVICE_TABLE(platform, avs_nau8825_driver_ids); 304 305 static struct platform_driver avs_nau8825_driver = { 306 .probe = avs_nau8825_probe, 307 .driver = { 308 .name = "avs_nau8825", 309 .pm = &snd_soc_pm_ops, 310 }, 311 .id_table = avs_nau8825_driver_ids, 312 }; 313 314 module_platform_driver(avs_nau8825_driver) 315 316 MODULE_LICENSE("GPL"); 317