1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * ASoC machine driver for Intel Broadwell platforms with RT5677 codec
4 *
5 * Copyright (c) 2014, The Chromium OS Authors. All rights reserved.
6 */
7
8 #include <linux/acpi.h>
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/delay.h>
13 #include <sound/core.h>
14 #include <sound/pcm.h>
15 #include <sound/soc.h>
16 #include <sound/pcm_params.h>
17 #include <sound/jack.h>
18 #include <sound/soc-acpi.h>
19
20 #include "../../codecs/rt5677.h"
21
22 struct bdw_rt5677_priv {
23 struct gpio_desc *gpio_hp_en;
24 struct snd_soc_component *component;
25 };
26
bdw_rt5677_event_hp(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)27 static int bdw_rt5677_event_hp(struct snd_soc_dapm_widget *w,
28 struct snd_kcontrol *k, int event)
29 {
30 struct snd_soc_dapm_context *dapm = w->dapm;
31 struct snd_soc_card *card = dapm->card;
32 struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
33
34 if (SND_SOC_DAPM_EVENT_ON(event))
35 msleep(70);
36
37 gpiod_set_value_cansleep(bdw_rt5677->gpio_hp_en,
38 SND_SOC_DAPM_EVENT_ON(event));
39
40 return 0;
41 }
42
43 static const struct snd_soc_dapm_widget bdw_rt5677_widgets[] = {
44 SND_SOC_DAPM_HP("Headphone", bdw_rt5677_event_hp),
45 SND_SOC_DAPM_SPK("Speaker", NULL),
46 SND_SOC_DAPM_MIC("Headset Mic", NULL),
47 SND_SOC_DAPM_MIC("Local DMICs", NULL),
48 SND_SOC_DAPM_MIC("Remote DMICs", NULL),
49 };
50
51 static const struct snd_soc_dapm_route bdw_rt5677_map[] = {
52 /* Speakers */
53 {"Speaker", NULL, "PDM1L"},
54 {"Speaker", NULL, "PDM1R"},
55
56 /* Headset jack connectors */
57 {"Headphone", NULL, "LOUT1"},
58 {"Headphone", NULL, "LOUT2"},
59 {"IN1P", NULL, "Headset Mic"},
60 {"IN1N", NULL, "Headset Mic"},
61
62 /* Digital MICs
63 * Local DMICs: the two DMICs on the mainboard
64 * Remote DMICs: the two DMICs on the camera module
65 */
66 {"DMIC L1", NULL, "Remote DMICs"},
67 {"DMIC R1", NULL, "Remote DMICs"},
68 {"DMIC L2", NULL, "Local DMICs"},
69 {"DMIC R2", NULL, "Local DMICs"},
70
71 /* CODEC BE connections */
72 {"SSP0 CODEC IN", NULL, "AIF1 Capture"},
73 {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
74 {"DSP Capture", NULL, "DSP Buffer"},
75
76 /* DSP Clock Connections */
77 { "DSP Buffer", NULL, "SSP0 CODEC IN" },
78 { "SSP0 CODEC IN", NULL, "DSPTX" },
79 };
80
81 static const struct snd_kcontrol_new bdw_rt5677_controls[] = {
82 SOC_DAPM_PIN_SWITCH("Speaker"),
83 SOC_DAPM_PIN_SWITCH("Headphone"),
84 SOC_DAPM_PIN_SWITCH("Headset Mic"),
85 SOC_DAPM_PIN_SWITCH("Local DMICs"),
86 SOC_DAPM_PIN_SWITCH("Remote DMICs"),
87 };
88
89
90 static struct snd_soc_jack headphone_jack;
91 static struct snd_soc_jack mic_jack;
92
93 static struct snd_soc_jack_pin headphone_jack_pin = {
94 .pin = "Headphone",
95 .mask = SND_JACK_HEADPHONE,
96 };
97
98 static struct snd_soc_jack_pin mic_jack_pin = {
99 .pin = "Headset Mic",
100 .mask = SND_JACK_MICROPHONE,
101 };
102
103 static struct snd_soc_jack_gpio headphone_jack_gpio = {
104 .name = "plug-det",
105 .report = SND_JACK_HEADPHONE,
106 .debounce_time = 200,
107 };
108
109 static struct snd_soc_jack_gpio mic_jack_gpio = {
110 .name = "mic-present",
111 .report = SND_JACK_MICROPHONE,
112 .debounce_time = 200,
113 .invert = 1,
114 };
115
116 /* GPIO indexes defined by ACPI */
117 enum {
118 RT5677_GPIO_PLUG_DET = 0,
119 RT5677_GPIO_MIC_PRESENT_L = 1,
120 RT5677_GPIO_HOTWORD_DET_L = 2,
121 RT5677_GPIO_DSP_INT = 3,
122 RT5677_GPIO_HP_AMP_SHDN_L = 4,
123 };
124
125 static const struct acpi_gpio_params plug_det_gpio = { RT5677_GPIO_PLUG_DET, 0, false };
126 static const struct acpi_gpio_params mic_present_gpio = { RT5677_GPIO_MIC_PRESENT_L, 0, false };
127 static const struct acpi_gpio_params headphone_enable_gpio = { RT5677_GPIO_HP_AMP_SHDN_L, 0, false };
128
129 static const struct acpi_gpio_mapping bdw_rt5677_gpios[] = {
130 { "plug-det-gpios", &plug_det_gpio, 1 },
131 { "mic-present-gpios", &mic_present_gpio, 1 },
132 { "headphone-enable-gpios", &headphone_enable_gpio, 1 },
133 { NULL },
134 };
135
broadwell_ssp0_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)136 static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
137 struct snd_pcm_hw_params *params)
138 {
139 struct snd_interval *rate = hw_param_interval(params,
140 SNDRV_PCM_HW_PARAM_RATE);
141 struct snd_interval *chan = hw_param_interval(params,
142 SNDRV_PCM_HW_PARAM_CHANNELS);
143
144 /* The ADSP will convert the FE rate to 48k, stereo */
145 rate->min = rate->max = 48000;
146 chan->min = chan->max = 2;
147
148 /* set SSP0 to 16 bit */
149 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
150 return 0;
151 }
152
bdw_rt5677_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)153 static int bdw_rt5677_hw_params(struct snd_pcm_substream *substream,
154 struct snd_pcm_hw_params *params)
155 {
156 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
157 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
158 int ret;
159
160 ret = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, 24576000,
161 SND_SOC_CLOCK_IN);
162 if (ret < 0) {
163 dev_err(rtd->dev, "can't set codec sysclk configuration\n");
164 return ret;
165 }
166
167 return ret;
168 }
169
bdw_rt5677_dsp_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)170 static int bdw_rt5677_dsp_hw_params(struct snd_pcm_substream *substream,
171 struct snd_pcm_hw_params *params)
172 {
173 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
174 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
175 int ret;
176
177 ret = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_PLL1, 24576000,
178 SND_SOC_CLOCK_IN);
179 if (ret < 0) {
180 dev_err(rtd->dev, "can't set codec sysclk configuration\n");
181 return ret;
182 }
183 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5677_PLL1_S_MCLK,
184 24000000, 24576000);
185 if (ret < 0) {
186 dev_err(rtd->dev, "can't set codec pll configuration\n");
187 return ret;
188 }
189
190 return 0;
191 }
192
193 static const struct snd_soc_ops bdw_rt5677_ops = {
194 .hw_params = bdw_rt5677_hw_params,
195 };
196
197 static const struct snd_soc_ops bdw_rt5677_dsp_ops = {
198 .hw_params = bdw_rt5677_dsp_hw_params,
199 };
200
201 static const unsigned int channels[] = {
202 2,
203 };
204
205 static const struct snd_pcm_hw_constraint_list constraints_channels = {
206 .count = ARRAY_SIZE(channels),
207 .list = channels,
208 .mask = 0,
209 };
210
bdw_rt5677_fe_startup(struct snd_pcm_substream * substream)211 static int bdw_rt5677_fe_startup(struct snd_pcm_substream *substream)
212 {
213 struct snd_pcm_runtime *runtime = substream->runtime;
214
215 /* Board supports stereo configuration only */
216 runtime->hw.channels_max = 2;
217 return snd_pcm_hw_constraint_list(runtime, 0,
218 SNDRV_PCM_HW_PARAM_CHANNELS,
219 &constraints_channels);
220 }
221
222 static const struct snd_soc_ops bdw_rt5677_fe_ops = {
223 .startup = bdw_rt5677_fe_startup,
224 };
225
bdw_rt5677_init(struct snd_soc_pcm_runtime * rtd)226 static int bdw_rt5677_init(struct snd_soc_pcm_runtime *rtd)
227 {
228 struct bdw_rt5677_priv *bdw_rt5677 =
229 snd_soc_card_get_drvdata(rtd->card);
230 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
231 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
232 int ret;
233
234 ret = devm_acpi_dev_add_driver_gpios(component->dev, bdw_rt5677_gpios);
235 if (ret)
236 dev_warn(component->dev, "Failed to add driver gpios\n");
237
238 /* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1.
239 * The ASRC clock source is clk_i2s1_asrc.
240 */
241 rt5677_sel_asrc_clk_src(component, RT5677_DA_STEREO_FILTER |
242 RT5677_AD_STEREO1_FILTER | RT5677_I2S1_SOURCE,
243 RT5677_CLK_SEL_I2S1_ASRC);
244 /* Enable codec ASRC function for Mono ADC L.
245 * The ASRC clock source is clk_sys2_asrc.
246 */
247 rt5677_sel_asrc_clk_src(component, RT5677_AD_MONO_L_FILTER,
248 RT5677_CLK_SEL_SYS2);
249
250 /* Request rt5677 GPIO for headphone amp control */
251 bdw_rt5677->gpio_hp_en = gpiod_get(component->dev, "headphone-enable",
252 GPIOD_OUT_LOW);
253 if (IS_ERR(bdw_rt5677->gpio_hp_en)) {
254 dev_err(component->dev, "Can't find HP_AMP_SHDN_L gpio\n");
255 return PTR_ERR(bdw_rt5677->gpio_hp_en);
256 }
257
258 /* Create and initialize headphone jack */
259 if (!snd_soc_card_jack_new_pins(rtd->card, "Headphone Jack",
260 SND_JACK_HEADPHONE, &headphone_jack,
261 &headphone_jack_pin, 1)) {
262 headphone_jack_gpio.gpiod_dev = component->dev;
263 if (snd_soc_jack_add_gpios(&headphone_jack, 1,
264 &headphone_jack_gpio))
265 dev_err(component->dev, "Can't add headphone jack gpio\n");
266 } else {
267 dev_err(component->dev, "Can't create headphone jack\n");
268 }
269
270 /* Create and initialize mic jack */
271 if (!snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",
272 SND_JACK_MICROPHONE, &mic_jack,
273 &mic_jack_pin, 1)) {
274 mic_jack_gpio.gpiod_dev = component->dev;
275 if (snd_soc_jack_add_gpios(&mic_jack, 1, &mic_jack_gpio))
276 dev_err(component->dev, "Can't add mic jack gpio\n");
277 } else {
278 dev_err(component->dev, "Can't create mic jack\n");
279 }
280 bdw_rt5677->component = component;
281
282 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
283 return 0;
284 }
285
bdw_rt5677_exit(struct snd_soc_pcm_runtime * rtd)286 static void bdw_rt5677_exit(struct snd_soc_pcm_runtime *rtd)
287 {
288 struct bdw_rt5677_priv *bdw_rt5677 =
289 snd_soc_card_get_drvdata(rtd->card);
290
291 /*
292 * The .exit() can be reached without going through the .init()
293 * so explicitly test if the gpiod is valid
294 */
295 if (!IS_ERR_OR_NULL(bdw_rt5677->gpio_hp_en))
296 gpiod_put(bdw_rt5677->gpio_hp_en);
297 }
298
299 /* broadwell digital audio interface glue - connects codec <--> CPU */
300 SND_SOC_DAILINK_DEF(dummy,
301 DAILINK_COMP_ARRAY(COMP_DUMMY()));
302
303 SND_SOC_DAILINK_DEF(fe,
304 DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));
305
306 SND_SOC_DAILINK_DEF(platform,
307 DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio")));
308
309 SND_SOC_DAILINK_DEF(be,
310 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-RT5677CE:00", "rt5677-aif1")));
311
312 SND_SOC_DAILINK_DEF(ssp0_port,
313 DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
314
315 /* Wake on voice interface */
316 SND_SOC_DAILINK_DEFS(dsp,
317 DAILINK_COMP_ARRAY(COMP_CPU("spi-RT5677AA:00")),
318 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-RT5677CE:00", "rt5677-dspbuffer")),
319 DAILINK_COMP_ARRAY(COMP_PLATFORM("spi-RT5677AA:00")));
320
321 static struct snd_soc_dai_link bdw_rt5677_dais[] = {
322 /* Front End DAI links */
323 {
324 .name = "System PCM",
325 .stream_name = "System Playback/Capture",
326 .nonatomic = 1,
327 .dynamic = 1,
328 .trigger = {
329 SND_SOC_DPCM_TRIGGER_POST,
330 SND_SOC_DPCM_TRIGGER_POST
331 },
332 .dpcm_capture = 1,
333 .dpcm_playback = 1,
334 .ops = &bdw_rt5677_fe_ops,
335 SND_SOC_DAILINK_REG(fe, dummy, platform),
336 },
337
338 /* Non-DPCM links */
339 {
340 .name = "Codec DSP",
341 .stream_name = "Wake on Voice",
342 .capture_only = 1,
343 .ops = &bdw_rt5677_dsp_ops,
344 SND_SOC_DAILINK_REG(dsp),
345 },
346
347 /* Back End DAI links */
348 {
349 /* SSP0 - Codec */
350 .name = "Codec",
351 .id = 0,
352 .nonatomic = 1,
353 .no_pcm = 1,
354 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
355 SND_SOC_DAIFMT_CBC_CFC,
356 .ignore_pmdown_time = 1,
357 .be_hw_params_fixup = broadwell_ssp0_fixup,
358 .ops = &bdw_rt5677_ops,
359 .dpcm_playback = 1,
360 .dpcm_capture = 1,
361 .init = bdw_rt5677_init,
362 .exit = bdw_rt5677_exit,
363 SND_SOC_DAILINK_REG(ssp0_port, be, platform),
364 },
365 };
366
bdw_rt5677_suspend_pre(struct snd_soc_card * card)367 static int bdw_rt5677_suspend_pre(struct snd_soc_card *card)
368 {
369 struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
370 struct snd_soc_dapm_context *dapm;
371
372 if (bdw_rt5677->component) {
373 dapm = snd_soc_component_get_dapm(bdw_rt5677->component);
374 snd_soc_dapm_disable_pin(dapm, "MICBIAS1");
375 }
376 return 0;
377 }
378
bdw_rt5677_resume_post(struct snd_soc_card * card)379 static int bdw_rt5677_resume_post(struct snd_soc_card *card)
380 {
381 struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
382 struct snd_soc_dapm_context *dapm;
383
384 if (bdw_rt5677->component) {
385 dapm = snd_soc_component_get_dapm(bdw_rt5677->component);
386 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
387 }
388 return 0;
389 }
390
391 /* use space before codec name to simplify card ID, and simplify driver name */
392 #define SOF_CARD_NAME "bdw rt5677" /* card name will be 'sof-bdw rt5677' */
393 #define SOF_DRIVER_NAME "SOF"
394
395 #define CARD_NAME "bdw-rt5677"
396 #define DRIVER_NAME NULL /* card name will be used for driver name */
397
398 /* ASoC machine driver for Broadwell DSP + RT5677 */
399 static struct snd_soc_card bdw_rt5677_card = {
400 .name = CARD_NAME,
401 .driver_name = DRIVER_NAME,
402 .owner = THIS_MODULE,
403 .dai_link = bdw_rt5677_dais,
404 .num_links = ARRAY_SIZE(bdw_rt5677_dais),
405 .dapm_widgets = bdw_rt5677_widgets,
406 .num_dapm_widgets = ARRAY_SIZE(bdw_rt5677_widgets),
407 .dapm_routes = bdw_rt5677_map,
408 .num_dapm_routes = ARRAY_SIZE(bdw_rt5677_map),
409 .controls = bdw_rt5677_controls,
410 .num_controls = ARRAY_SIZE(bdw_rt5677_controls),
411 .fully_routed = true,
412 .suspend_pre = bdw_rt5677_suspend_pre,
413 .resume_post = bdw_rt5677_resume_post,
414 };
415
bdw_rt5677_probe(struct platform_device * pdev)416 static int bdw_rt5677_probe(struct platform_device *pdev)
417 {
418 struct bdw_rt5677_priv *bdw_rt5677;
419 struct snd_soc_acpi_mach *mach;
420 int ret;
421
422 bdw_rt5677_card.dev = &pdev->dev;
423
424 /* Allocate driver private struct */
425 bdw_rt5677 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5677_priv),
426 GFP_KERNEL);
427 if (!bdw_rt5677)
428 return -ENOMEM;
429
430 /* override platform name, if required */
431 mach = pdev->dev.platform_data;
432 ret = snd_soc_fixup_dai_links_platform_name(&bdw_rt5677_card,
433 mach->mach_params.platform);
434 if (ret)
435 return ret;
436
437 /* set card and driver name */
438 if (snd_soc_acpi_sof_parent(&pdev->dev)) {
439 bdw_rt5677_card.name = SOF_CARD_NAME;
440 bdw_rt5677_card.driver_name = SOF_DRIVER_NAME;
441 } else {
442 bdw_rt5677_card.name = CARD_NAME;
443 bdw_rt5677_card.driver_name = DRIVER_NAME;
444 }
445
446 snd_soc_card_set_drvdata(&bdw_rt5677_card, bdw_rt5677);
447
448 return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5677_card);
449 }
450
451 static struct platform_driver bdw_rt5677_audio = {
452 .probe = bdw_rt5677_probe,
453 .driver = {
454 .name = "bdw-rt5677",
455 .pm = &snd_soc_pm_ops
456 },
457 };
458
459 module_platform_driver(bdw_rt5677_audio)
460
461 /* Module information */
462 MODULE_AUTHOR("Ben Zhang");
463 MODULE_DESCRIPTION("Intel Broadwell RT5677 machine driver");
464 MODULE_LICENSE("GPL v2");
465 MODULE_ALIAS("platform:bdw-rt5677");
466