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1 /*
2  * Machine driver for AMD ACP Audio engine using DA7219 & MAX98357 codec
3  *
4  * Copyright 2017 Advanced Micro Devices, Inc.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22  * OTHER DEALINGS IN THE SOFTWARE.
23  *
24  */
25 
26 #include <sound/core.h>
27 #include <sound/soc.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/soc-dapm.h>
31 #include <sound/jack.h>
32 #include <linux/clk.h>
33 #include <linux/gpio.h>
34 #include <linux/module.h>
35 #include <linux/regulator/machine.h>
36 #include <linux/regulator/driver.h>
37 #include <linux/i2c.h>
38 #include <linux/input.h>
39 #include <linux/acpi.h>
40 
41 #include "acp.h"
42 #include "../codecs/da7219.h"
43 #include "../codecs/da7219-aad.h"
44 
45 #define CZ_PLAT_CLK 48000000
46 #define DUAL_CHANNEL		2
47 
48 static struct snd_soc_jack cz_jack;
49 static struct clk *da7219_dai_wclk;
50 static struct clk *da7219_dai_bclk;
51 extern bool bt_uart_enable;
52 
cz_da7219_init(struct snd_soc_pcm_runtime * rtd)53 static int cz_da7219_init(struct snd_soc_pcm_runtime *rtd)
54 {
55 	int ret;
56 	struct snd_soc_card *card = rtd->card;
57 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
58 	struct snd_soc_component *component = codec_dai->component;
59 
60 	dev_info(rtd->dev, "codec dai name = %s\n", codec_dai->name);
61 
62 	ret = snd_soc_dai_set_sysclk(codec_dai, DA7219_CLKSRC_MCLK,
63 				     CZ_PLAT_CLK, SND_SOC_CLOCK_IN);
64 	if (ret < 0) {
65 		dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
66 		return ret;
67 	}
68 
69 	ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_PLL,
70 				  CZ_PLAT_CLK, DA7219_PLL_FREQ_OUT_98304);
71 	if (ret < 0) {
72 		dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
73 		return ret;
74 	}
75 
76 	da7219_dai_wclk = devm_clk_get(component->dev, "da7219-dai-wclk");
77 	if (IS_ERR(da7219_dai_wclk))
78 		return PTR_ERR(da7219_dai_wclk);
79 
80 	da7219_dai_bclk = devm_clk_get(component->dev, "da7219-dai-bclk");
81 	if (IS_ERR(da7219_dai_bclk))
82 		return PTR_ERR(da7219_dai_bclk);
83 
84 	ret = snd_soc_card_jack_new(card, "Headset Jack",
85 				SND_JACK_HEADSET | SND_JACK_LINEOUT |
86 				SND_JACK_BTN_0 | SND_JACK_BTN_1 |
87 				SND_JACK_BTN_2 | SND_JACK_BTN_3,
88 				&cz_jack, NULL, 0);
89 	if (ret) {
90 		dev_err(card->dev, "HP jack creation failed %d\n", ret);
91 		return ret;
92 	}
93 
94 	snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
95 	snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
96 	snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
97 	snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
98 
99 	da7219_aad_jack_det(component, &cz_jack);
100 
101 	return 0;
102 }
103 
da7219_clk_enable(struct snd_pcm_substream * substream)104 static int da7219_clk_enable(struct snd_pcm_substream *substream)
105 {
106 	int ret = 0;
107 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
108 
109 	/*
110 	 * Set wclk to 48000 because the rate constraint of this driver is
111 	 * 48000. ADAU7002 spec: "The ADAU7002 requires a BCLK rate that is
112 	 * minimum of 64x the LRCLK sample rate." DA7219 is the only clk
113 	 * source so for all codecs we have to limit bclk to 64X lrclk.
114 	 */
115 	clk_set_rate(da7219_dai_wclk, 48000);
116 	clk_set_rate(da7219_dai_bclk, 48000 * 64);
117 	ret = clk_prepare_enable(da7219_dai_bclk);
118 	if (ret < 0) {
119 		dev_err(rtd->dev, "can't enable master clock %d\n", ret);
120 		return ret;
121 	}
122 
123 	return ret;
124 }
125 
da7219_clk_disable(void)126 static void da7219_clk_disable(void)
127 {
128 	clk_disable_unprepare(da7219_dai_bclk);
129 }
130 
131 static const unsigned int channels[] = {
132 	DUAL_CHANNEL,
133 };
134 
135 static const unsigned int rates[] = {
136 	48000,
137 };
138 
139 static const struct snd_pcm_hw_constraint_list constraints_rates = {
140 	.count = ARRAY_SIZE(rates),
141 	.list  = rates,
142 	.mask = 0,
143 };
144 
145 static const struct snd_pcm_hw_constraint_list constraints_channels = {
146 	.count = ARRAY_SIZE(channels),
147 	.list = channels,
148 	.mask = 0,
149 };
150 
cz_da7219_play_startup(struct snd_pcm_substream * substream)151 static int cz_da7219_play_startup(struct snd_pcm_substream *substream)
152 {
153 	struct snd_pcm_runtime *runtime = substream->runtime;
154 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
155 	struct snd_soc_card *card = rtd->card;
156 	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
157 
158 	/*
159 	 * On this platform for PCM device we support stereo
160 	 */
161 
162 	runtime->hw.channels_max = DUAL_CHANNEL;
163 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
164 				   &constraints_channels);
165 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
166 				   &constraints_rates);
167 
168 	machine->play_i2s_instance = I2S_SP_INSTANCE;
169 	return da7219_clk_enable(substream);
170 }
171 
cz_da7219_cap_startup(struct snd_pcm_substream * substream)172 static int cz_da7219_cap_startup(struct snd_pcm_substream *substream)
173 {
174 	struct snd_pcm_runtime *runtime = substream->runtime;
175 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
176 	struct snd_soc_card *card = rtd->card;
177 	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
178 
179 	/*
180 	 * On this platform for PCM device we support stereo
181 	 */
182 
183 	runtime->hw.channels_max = DUAL_CHANNEL;
184 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
185 				   &constraints_channels);
186 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
187 				   &constraints_rates);
188 
189 	machine->cap_i2s_instance = I2S_SP_INSTANCE;
190 	machine->capture_channel = CAP_CHANNEL1;
191 	return da7219_clk_enable(substream);
192 }
193 
cz_max_startup(struct snd_pcm_substream * substream)194 static int cz_max_startup(struct snd_pcm_substream *substream)
195 {
196 	struct snd_pcm_runtime *runtime = substream->runtime;
197 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
198 	struct snd_soc_card *card = rtd->card;
199 	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
200 
201 	/*
202 	 * On this platform for PCM device we support stereo
203 	 */
204 
205 	runtime->hw.channels_max = DUAL_CHANNEL;
206 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
207 				   &constraints_channels);
208 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
209 				   &constraints_rates);
210 
211 	machine->play_i2s_instance = I2S_BT_INSTANCE;
212 	return da7219_clk_enable(substream);
213 }
214 
cz_dmic0_startup(struct snd_pcm_substream * substream)215 static int cz_dmic0_startup(struct snd_pcm_substream *substream)
216 {
217 	struct snd_pcm_runtime *runtime = substream->runtime;
218 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
219 	struct snd_soc_card *card = rtd->card;
220 	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
221 
222 	/*
223 	 * On this platform for PCM device we support stereo
224 	 */
225 
226 	runtime->hw.channels_max = DUAL_CHANNEL;
227 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
228 				   &constraints_channels);
229 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
230 				   &constraints_rates);
231 
232 	machine->cap_i2s_instance = I2S_BT_INSTANCE;
233 	return da7219_clk_enable(substream);
234 }
235 
cz_dmic1_startup(struct snd_pcm_substream * substream)236 static int cz_dmic1_startup(struct snd_pcm_substream *substream)
237 {
238 	struct snd_pcm_runtime *runtime = substream->runtime;
239 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
240 	struct snd_soc_card *card = rtd->card;
241 	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
242 
243 	/*
244 	 * On this platform for PCM device we support stereo
245 	 */
246 
247 	runtime->hw.channels_max = DUAL_CHANNEL;
248 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
249 				   &constraints_channels);
250 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
251 				   &constraints_rates);
252 
253 	machine->cap_i2s_instance = I2S_SP_INSTANCE;
254 	machine->capture_channel = CAP_CHANNEL0;
255 	return da7219_clk_enable(substream);
256 }
257 
cz_da7219_shutdown(struct snd_pcm_substream * substream)258 static void cz_da7219_shutdown(struct snd_pcm_substream *substream)
259 {
260 	da7219_clk_disable();
261 }
262 
263 static const struct snd_soc_ops cz_da7219_play_ops = {
264 	.startup = cz_da7219_play_startup,
265 	.shutdown = cz_da7219_shutdown,
266 };
267 
268 static const struct snd_soc_ops cz_da7219_cap_ops = {
269 	.startup = cz_da7219_cap_startup,
270 	.shutdown = cz_da7219_shutdown,
271 };
272 
273 static const struct snd_soc_ops cz_max_play_ops = {
274 	.startup = cz_max_startup,
275 	.shutdown = cz_da7219_shutdown,
276 };
277 
278 static const struct snd_soc_ops cz_dmic0_cap_ops = {
279 	.startup = cz_dmic0_startup,
280 	.shutdown = cz_da7219_shutdown,
281 };
282 
283 static const struct snd_soc_ops cz_dmic1_cap_ops = {
284 	.startup = cz_dmic1_startup,
285 	.shutdown = cz_da7219_shutdown,
286 };
287 
288 SND_SOC_DAILINK_DEF(designware1,
289 	DAILINK_COMP_ARRAY(COMP_CPU("designware-i2s.1.auto")));
290 SND_SOC_DAILINK_DEF(designware2,
291 	DAILINK_COMP_ARRAY(COMP_CPU("designware-i2s.2.auto")));
292 SND_SOC_DAILINK_DEF(designware3,
293 	DAILINK_COMP_ARRAY(COMP_CPU("designware-i2s.3.auto")));
294 
295 SND_SOC_DAILINK_DEF(dlgs,
296 	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-DLGS7219:00", "da7219-hifi")));
297 SND_SOC_DAILINK_DEF(mx,
298 	DAILINK_COMP_ARRAY(COMP_CODEC("MX98357A:00", "HiFi")));
299 SND_SOC_DAILINK_DEF(adau,
300 	DAILINK_COMP_ARRAY(COMP_CODEC("ADAU7002:00", "adau7002-hifi")));
301 
302 SND_SOC_DAILINK_DEF(platform,
303 	DAILINK_COMP_ARRAY(COMP_PLATFORM("acp_audio_dma.0.auto")));
304 
305 static struct snd_soc_dai_link cz_dai_7219_98357[] = {
306 	{
307 		.name = "amd-da7219-play",
308 		.stream_name = "Playback",
309 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
310 				| SND_SOC_DAIFMT_CBM_CFM,
311 		.init = cz_da7219_init,
312 		.dpcm_playback = 1,
313 		.ops = &cz_da7219_play_ops,
314 		SND_SOC_DAILINK_REG(designware1, dlgs, platform),
315 	},
316 	{
317 		.name = "amd-da7219-cap",
318 		.stream_name = "Capture",
319 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
320 				| SND_SOC_DAIFMT_CBM_CFM,
321 		.dpcm_capture = 1,
322 		.ops = &cz_da7219_cap_ops,
323 		SND_SOC_DAILINK_REG(designware2, dlgs, platform),
324 	},
325 	{
326 		.name = "amd-max98357-play",
327 		.stream_name = "HiFi Playback",
328 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
329 				| SND_SOC_DAIFMT_CBM_CFM,
330 		.dpcm_playback = 1,
331 		.ops = &cz_max_play_ops,
332 		SND_SOC_DAILINK_REG(designware3, mx, platform),
333 	},
334 	{
335 		/* C panel DMIC */
336 		.name = "dmic0",
337 		.stream_name = "DMIC0 Capture",
338 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
339 				| SND_SOC_DAIFMT_CBM_CFM,
340 		.dpcm_capture = 1,
341 		.ops = &cz_dmic0_cap_ops,
342 		SND_SOC_DAILINK_REG(designware3, adau, platform),
343 	},
344 	{
345 		/* A/B panel DMIC */
346 		.name = "dmic1",
347 		.stream_name = "DMIC1 Capture",
348 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
349 				| SND_SOC_DAIFMT_CBM_CFM,
350 		.dpcm_capture = 1,
351 		.ops = &cz_dmic1_cap_ops,
352 		SND_SOC_DAILINK_REG(designware2, adau, platform),
353 	},
354 };
355 
356 static const struct snd_soc_dapm_widget cz_widgets[] = {
357 	SND_SOC_DAPM_HP("Headphones", NULL),
358 	SND_SOC_DAPM_SPK("Speakers", NULL),
359 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
360 	SND_SOC_DAPM_MIC("Int Mic", NULL),
361 };
362 
363 static const struct snd_soc_dapm_route cz_audio_route[] = {
364 	{"Headphones", NULL, "HPL"},
365 	{"Headphones", NULL, "HPR"},
366 	{"MIC", NULL, "Headset Mic"},
367 	{"Speakers", NULL, "Speaker"},
368 	{"PDM_DAT", NULL, "Int Mic"},
369 };
370 
371 static const struct snd_kcontrol_new cz_mc_controls[] = {
372 	SOC_DAPM_PIN_SWITCH("Headphones"),
373 	SOC_DAPM_PIN_SWITCH("Speakers"),
374 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
375 	SOC_DAPM_PIN_SWITCH("Int Mic"),
376 };
377 
378 static struct snd_soc_card cz_card = {
379 	.name = "acpd7219m98357",
380 	.owner = THIS_MODULE,
381 	.dai_link = cz_dai_7219_98357,
382 	.num_links = ARRAY_SIZE(cz_dai_7219_98357),
383 	.dapm_widgets = cz_widgets,
384 	.num_dapm_widgets = ARRAY_SIZE(cz_widgets),
385 	.dapm_routes = cz_audio_route,
386 	.num_dapm_routes = ARRAY_SIZE(cz_audio_route),
387 	.controls = cz_mc_controls,
388 	.num_controls = ARRAY_SIZE(cz_mc_controls),
389 };
390 
391 static struct regulator_consumer_supply acp_da7219_supplies[] = {
392 	REGULATOR_SUPPLY("VDD", "i2c-DLGS7219:00"),
393 	REGULATOR_SUPPLY("VDDMIC", "i2c-DLGS7219:00"),
394 	REGULATOR_SUPPLY("VDDIO", "i2c-DLGS7219:00"),
395 	REGULATOR_SUPPLY("IOVDD", "ADAU7002:00"),
396 };
397 
398 static struct regulator_init_data acp_da7219_data = {
399 	.constraints = {
400 		.always_on = 1,
401 	},
402 	.num_consumer_supplies = ARRAY_SIZE(acp_da7219_supplies),
403 	.consumer_supplies = acp_da7219_supplies,
404 };
405 
406 static struct regulator_config acp_da7219_cfg = {
407 	.init_data = &acp_da7219_data,
408 };
409 
410 static struct regulator_ops acp_da7219_ops = {
411 };
412 
413 static const struct regulator_desc acp_da7219_desc = {
414 	.name = "reg-fixed-1.8V",
415 	.type = REGULATOR_VOLTAGE,
416 	.owner = THIS_MODULE,
417 	.ops = &acp_da7219_ops,
418 	.fixed_uV = 1800000, /* 1.8V */
419 	.n_voltages = 1,
420 };
421 
cz_probe(struct platform_device * pdev)422 static int cz_probe(struct platform_device *pdev)
423 {
424 	int ret;
425 	struct snd_soc_card *card;
426 	struct acp_platform_info *machine;
427 	struct regulator_dev *rdev;
428 
429 	acp_da7219_cfg.dev = &pdev->dev;
430 	rdev = devm_regulator_register(&pdev->dev, &acp_da7219_desc,
431 				       &acp_da7219_cfg);
432 	if (IS_ERR(rdev)) {
433 		dev_err(&pdev->dev, "Failed to register regulator: %d\n",
434 			(int)PTR_ERR(rdev));
435 		return -EINVAL;
436 	}
437 
438 	machine = devm_kzalloc(&pdev->dev, sizeof(struct acp_platform_info),
439 			       GFP_KERNEL);
440 	if (!machine)
441 		return -ENOMEM;
442 	card = &cz_card;
443 	cz_card.dev = &pdev->dev;
444 	platform_set_drvdata(pdev, card);
445 	snd_soc_card_set_drvdata(card, machine);
446 	ret = devm_snd_soc_register_card(&pdev->dev, &cz_card);
447 	if (ret) {
448 		dev_err(&pdev->dev,
449 				"devm_snd_soc_register_card(%s) failed: %d\n",
450 				cz_card.name, ret);
451 		return ret;
452 	}
453 	bt_uart_enable = !device_property_read_bool(&pdev->dev,
454 						    "bt-pad-enable");
455 	return 0;
456 }
457 
458 #ifdef CONFIG_ACPI
459 static const struct acpi_device_id cz_audio_acpi_match[] = {
460 	{ "AMD7219", 0 },
461 	{},
462 };
463 MODULE_DEVICE_TABLE(acpi, cz_audio_acpi_match);
464 #endif
465 
466 static struct platform_driver cz_pcm_driver = {
467 	.driver = {
468 		.name = "cz-da7219-max98357a",
469 		.acpi_match_table = ACPI_PTR(cz_audio_acpi_match),
470 		.pm = &snd_soc_pm_ops,
471 	},
472 	.probe = cz_probe,
473 };
474 
475 module_platform_driver(cz_pcm_driver);
476 
477 MODULE_AUTHOR("akshu.agrawal@amd.com");
478 MODULE_DESCRIPTION("DA7219 & MAX98357A audio support");
479 MODULE_LICENSE("GPL v2");
480