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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms
4 * Cherrytrail and Braswell, with RT5672 codec.
5 *
6 * Copyright (C) 2014 Intel Corp
7 * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
8 * Mengdong Lin <mengdong.lin@intel.com>
9 */
10
11#include <linux/gpio/consumer.h>
12#include <linux/input.h>
13#include <linux/module.h>
14#include <linux/platform_device.h>
15#include <linux/slab.h>
16#include <linux/clk.h>
17#include <sound/pcm.h>
18#include <sound/pcm_params.h>
19#include <sound/soc.h>
20#include <sound/jack.h>
21#include <sound/soc-acpi.h>
22#include "../../codecs/rt5670.h"
23#include "../atom/sst-atom-controls.h"
24#include "../common/soc-intel-quirks.h"
25
26
27/* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */
28#define CHT_PLAT_CLK_3_HZ 19200000
29#define CHT_CODEC_DAI "rt5670-aif1"
30
31struct cht_mc_private {
32 struct snd_soc_jack headset;
33 char codec_name[SND_ACPI_I2C_ID_LEN];
34 struct clk *mclk;
35 bool use_ssp0;
36};
37
38/* Headset jack detection DAPM pins */
39static struct snd_soc_jack_pin cht_bsw_headset_pins[] = {
40 {
41 .pin = "Headset Mic",
42 .mask = SND_JACK_MICROPHONE,
43 },
44 {
45 .pin = "Headphone",
46 .mask = SND_JACK_HEADPHONE,
47 },
48};
49
50static int platform_clock_control(struct snd_soc_dapm_widget *w,
51 struct snd_kcontrol *k, int event)
52{
53 struct snd_soc_dapm_context *dapm = w->dapm;
54 struct snd_soc_card *card = dapm->card;
55 struct snd_soc_dai *codec_dai;
56 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
57 int ret;
58
59 codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
60 if (!codec_dai) {
61 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
62 return -EIO;
63 }
64
65 if (SND_SOC_DAPM_EVENT_ON(event)) {
66 if (ctx->mclk) {
67 ret = clk_prepare_enable(ctx->mclk);
68 if (ret < 0) {
69 dev_err(card->dev,
70 "could not configure MCLK state");
71 return ret;
72 }
73 }
74
75 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
76 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
77 CHT_PLAT_CLK_3_HZ, 48000 * 512);
78 if (ret < 0) {
79 dev_err(card->dev, "can't set codec pll: %d\n", ret);
80 return ret;
81 }
82
83 /* set codec sysclk source to PLL */
84 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
85 48000 * 512, SND_SOC_CLOCK_IN);
86 if (ret < 0) {
87 dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
88 return ret;
89 }
90 } else {
91 /* Set codec sysclk source to its internal clock because codec
92 * PLL will be off when idle and MCLK will also be off by ACPI
93 * when codec is runtime suspended. Codec needs clock for jack
94 * detection and button press.
95 */
96 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK,
97 48000 * 512, SND_SOC_CLOCK_IN);
98
99 if (ctx->mclk)
100 clk_disable_unprepare(ctx->mclk);
101 }
102 return 0;
103}
104
105static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
106 SND_SOC_DAPM_HP("Headphone", NULL),
107 SND_SOC_DAPM_MIC("Headset Mic", NULL),
108 SND_SOC_DAPM_MIC("Int Mic", NULL),
109 SND_SOC_DAPM_SPK("Ext Spk", NULL),
110 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
111 platform_clock_control, SND_SOC_DAPM_PRE_PMU |
112 SND_SOC_DAPM_POST_PMD),
113};
114
115static const struct snd_soc_dapm_route cht_audio_map[] = {
116 {"IN1P", NULL, "Headset Mic"},
117 {"IN1N", NULL, "Headset Mic"},
118 {"DMIC L1", NULL, "Int Mic"},
119 {"DMIC R1", NULL, "Int Mic"},
120 {"Headphone", NULL, "HPOL"},
121 {"Headphone", NULL, "HPOR"},
122 {"Ext Spk", NULL, "SPOLP"},
123 {"Ext Spk", NULL, "SPOLN"},
124 {"Ext Spk", NULL, "SPORP"},
125 {"Ext Spk", NULL, "SPORN"},
126 {"Headphone", NULL, "Platform Clock"},
127 {"Headset Mic", NULL, "Platform Clock"},
128 {"Int Mic", NULL, "Platform Clock"},
129 {"Ext Spk", NULL, "Platform Clock"},
130};
131
132static const struct snd_soc_dapm_route cht_audio_ssp0_map[] = {
133 {"AIF1 Playback", NULL, "ssp0 Tx"},
134 {"ssp0 Tx", NULL, "modem_out"},
135 {"modem_in", NULL, "ssp0 Rx"},
136 {"ssp0 Rx", NULL, "AIF1 Capture"},
137};
138
139static const struct snd_soc_dapm_route cht_audio_ssp2_map[] = {
140 {"AIF1 Playback", NULL, "ssp2 Tx"},
141 {"ssp2 Tx", NULL, "codec_out0"},
142 {"ssp2 Tx", NULL, "codec_out1"},
143 {"codec_in0", NULL, "ssp2 Rx"},
144 {"codec_in1", NULL, "ssp2 Rx"},
145 {"ssp2 Rx", NULL, "AIF1 Capture"},
146};
147
148static const struct snd_kcontrol_new cht_mc_controls[] = {
149 SOC_DAPM_PIN_SWITCH("Headphone"),
150 SOC_DAPM_PIN_SWITCH("Headset Mic"),
151 SOC_DAPM_PIN_SWITCH("Int Mic"),
152 SOC_DAPM_PIN_SWITCH("Ext Spk"),
153};
154
155static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
156 struct snd_pcm_hw_params *params)
157{
158 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
159 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
160 int ret;
161
162 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
163 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
164 CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
165 if (ret < 0) {
166 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
167 return ret;
168 }
169
170 /* set codec sysclk source to PLL */
171 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
172 params_rate(params) * 512,
173 SND_SOC_CLOCK_IN);
174 if (ret < 0) {
175 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
176 return ret;
177 }
178 return 0;
179}
180
181static const struct acpi_gpio_params headset_gpios = { 0, 0, false };
182
183static const struct acpi_gpio_mapping cht_rt5672_gpios[] = {
184 { "headset-gpios", &headset_gpios, 1 },
185 {},
186};
187
188static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
189{
190 int ret;
191 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
192 struct snd_soc_component *component = codec_dai->component;
193 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
194
195 if (devm_acpi_dev_add_driver_gpios(component->dev, cht_rt5672_gpios))
196 dev_warn(runtime->dev, "Unable to add GPIO mapping table\n");
197
198 /* Select codec ASRC clock source to track I2S1 clock, because codec
199 * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot
200 * be supported by RT5672. Otherwise, ASRC will be disabled and cause
201 * noise.
202 */
203 rt5670_sel_asrc_clk_src(component,
204 RT5670_DA_STEREO_FILTER
205 | RT5670_DA_MONO_L_FILTER
206 | RT5670_DA_MONO_R_FILTER
207 | RT5670_AD_STEREO_FILTER
208 | RT5670_AD_MONO_L_FILTER
209 | RT5670_AD_MONO_R_FILTER,
210 RT5670_CLK_SEL_I2S1_ASRC);
211
212 if (ctx->use_ssp0) {
213 ret = snd_soc_dapm_add_routes(&runtime->card->dapm,
214 cht_audio_ssp0_map,
215 ARRAY_SIZE(cht_audio_ssp0_map));
216 } else {
217 ret = snd_soc_dapm_add_routes(&runtime->card->dapm,
218 cht_audio_ssp2_map,
219 ARRAY_SIZE(cht_audio_ssp2_map));
220 }
221 if (ret)
222 return ret;
223
224 ret = snd_soc_card_jack_new_pins(runtime->card, "Headset",
225 SND_JACK_HEADSET | SND_JACK_BTN_0 |
226 SND_JACK_BTN_1 | SND_JACK_BTN_2,
227 &ctx->headset,
228 cht_bsw_headset_pins,
229 ARRAY_SIZE(cht_bsw_headset_pins));
230 if (ret)
231 return ret;
232
233 snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
234 snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
235 snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
236
237 rt5670_set_jack_detect(component, &ctx->headset);
238 if (ctx->mclk) {
239 /*
240 * The firmware might enable the clock at
241 * boot (this information may or may not
242 * be reflected in the enable clock register).
243 * To change the rate we must disable the clock
244 * first to cover these cases. Due to common
245 * clock framework restrictions that do not allow
246 * to disable a clock that has not been enabled,
247 * we need to enable the clock first.
248 */
249 ret = clk_prepare_enable(ctx->mclk);
250 if (!ret)
251 clk_disable_unprepare(ctx->mclk);
252
253 ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
254
255 if (ret) {
256 dev_err(runtime->dev, "unable to set MCLK rate\n");
257 return ret;
258 }
259 }
260 return 0;
261}
262
263static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
264 struct snd_pcm_hw_params *params)
265{
266 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(rtd->card);
267 struct snd_interval *rate = hw_param_interval(params,
268 SNDRV_PCM_HW_PARAM_RATE);
269 struct snd_interval *channels = hw_param_interval(params,
270 SNDRV_PCM_HW_PARAM_CHANNELS);
271 int ret, bits;
272
273 /* The DSP will convert the FE rate to 48k, stereo, 24bits */
274 rate->min = rate->max = 48000;
275 channels->min = channels->max = 2;
276
277 if (ctx->use_ssp0) {
278 /* set SSP0 to 16-bit */
279 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
280 bits = 16;
281 } else {
282 /* set SSP2 to 24-bit */
283 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
284 bits = 24;
285 }
286
287 /*
288 * The default mode for the cpu-dai is TDM 4 slot. The default mode
289 * for the codec-dai is I2S. So we need to either set the cpu-dai to
290 * I2S mode to match the codec-dai, or set the codec-dai to TDM 4 slot
291 * (or program both to yet another mode).
292 * One board, the Lenovo Miix 2 10, uses not 1 but 2 codecs connected
293 * to SSP2. The second piggy-backed, output-only codec is inside the
294 * keyboard-dock (which has extra speakers). Unlike the main rt5672
295 * codec, we cannot configure this codec, it is hard coded to use
296 * 2 channel 24 bit I2S. For this to work we must use I2S mode on this
297 * board. Since we only support 2 channels anyways, there is no need
298 * for TDM on any cht-bsw-rt5672 designs. So we use I2S 2ch everywhere.
299 */
300 ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
301 SND_SOC_DAIFMT_I2S |
302 SND_SOC_DAIFMT_NB_NF |
303 SND_SOC_DAIFMT_BP_FP);
304 if (ret < 0) {
305 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
306 return ret;
307 }
308
309 ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, bits);
310 if (ret < 0) {
311 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
312 return ret;
313 }
314
315 return 0;
316}
317
318static int cht_aif1_startup(struct snd_pcm_substream *substream)
319{
320 return snd_pcm_hw_constraint_single(substream->runtime,
321 SNDRV_PCM_HW_PARAM_RATE, 48000);
322}
323
324static const struct snd_soc_ops cht_aif1_ops = {
325 .startup = cht_aif1_startup,
326};
327
328static const struct snd_soc_ops cht_be_ssp2_ops = {
329 .hw_params = cht_aif1_hw_params,
330};
331
332SND_SOC_DAILINK_DEF(dummy,
333 DAILINK_COMP_ARRAY(COMP_DUMMY()));
334
335SND_SOC_DAILINK_DEF(media,
336 DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
337
338SND_SOC_DAILINK_DEF(deepbuffer,
339 DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
340
341SND_SOC_DAILINK_DEF(ssp2_port,
342 DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
343SND_SOC_DAILINK_DEF(ssp2_codec,
344 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5670:00",
345 "rt5670-aif1")));
346
347SND_SOC_DAILINK_DEF(platform,
348 DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
349
350static struct snd_soc_dai_link cht_dailink[] = {
351 /* Front End DAI links */
352 [MERR_DPCM_AUDIO] = {
353 .name = "Audio Port",
354 .stream_name = "Audio",
355 .nonatomic = true,
356 .dynamic = 1,
357 .dpcm_playback = 1,
358 .dpcm_capture = 1,
359 .ops = &cht_aif1_ops,
360 SND_SOC_DAILINK_REG(media, dummy, platform),
361 },
362 [MERR_DPCM_DEEP_BUFFER] = {
363 .name = "Deep-Buffer Audio Port",
364 .stream_name = "Deep-Buffer Audio",
365 .nonatomic = true,
366 .dynamic = 1,
367 .dpcm_playback = 1,
368 .ops = &cht_aif1_ops,
369 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
370 },
371
372 /* Back End DAI links */
373 {
374 /* SSP2 - Codec */
375 .name = "SSP2-Codec",
376 .id = 0,
377 .no_pcm = 1,
378 .init = cht_codec_init,
379 .be_hw_params_fixup = cht_codec_fixup,
380 .dpcm_playback = 1,
381 .dpcm_capture = 1,
382 .ops = &cht_be_ssp2_ops,
383 SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
384 },
385};
386
387static int cht_suspend_pre(struct snd_soc_card *card)
388{
389 struct snd_soc_component *component;
390 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
391
392 for_each_card_components(card, component) {
393 if (!strncmp(component->name,
394 ctx->codec_name, sizeof(ctx->codec_name))) {
395
396 dev_dbg(component->dev, "disabling jack detect before going to suspend.\n");
397 rt5670_jack_suspend(component);
398 break;
399 }
400 }
401 return 0;
402}
403
404static int cht_resume_post(struct snd_soc_card *card)
405{
406 struct snd_soc_component *component;
407 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
408
409 for_each_card_components(card, component) {
410 if (!strncmp(component->name,
411 ctx->codec_name, sizeof(ctx->codec_name))) {
412
413 dev_dbg(component->dev, "enabling jack detect for resume.\n");
414 rt5670_jack_resume(component);
415 break;
416 }
417 }
418
419 return 0;
420}
421
422/* use space before codec name to simplify card ID, and simplify driver name */
423#define SOF_CARD_NAME "bytcht rt5672" /* card name will be 'sof-bytcht rt5672' */
424#define SOF_DRIVER_NAME "SOF"
425
426#define CARD_NAME "cht-bsw-rt5672"
427#define DRIVER_NAME NULL /* card name will be used for driver name */
428
429/* SoC card */
430static struct snd_soc_card snd_soc_card_cht = {
431 .owner = THIS_MODULE,
432 .dai_link = cht_dailink,
433 .num_links = ARRAY_SIZE(cht_dailink),
434 .dapm_widgets = cht_dapm_widgets,
435 .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
436 .dapm_routes = cht_audio_map,
437 .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
438 .controls = cht_mc_controls,
439 .num_controls = ARRAY_SIZE(cht_mc_controls),
440 .suspend_pre = cht_suspend_pre,
441 .resume_post = cht_resume_post,
442};
443
444#define RT5672_I2C_DEFAULT "i2c-10EC5670:00"
445
446static int snd_cht_mc_probe(struct platform_device *pdev)
447{
448 int ret_val = 0;
449 struct cht_mc_private *drv;
450 struct snd_soc_acpi_mach *mach = pdev->dev.platform_data;
451 const char *platform_name;
452 struct acpi_device *adev;
453 bool sof_parent;
454 int dai_index = 0;
455 int i;
456
457 drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
458 if (!drv)
459 return -ENOMEM;
460
461 strcpy(drv->codec_name, RT5672_I2C_DEFAULT);
462
463 /* find index of codec dai */
464 for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) {
465 if (!strcmp(cht_dailink[i].codecs->name, RT5672_I2C_DEFAULT)) {
466 dai_index = i;
467 break;
468 }
469 }
470
471 /* fixup codec name based on HID */
472 adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
473 if (adev) {
474 snprintf(drv->codec_name, sizeof(drv->codec_name),
475 "i2c-%s", acpi_dev_name(adev));
476 put_device(&adev->dev);
477 cht_dailink[dai_index].codecs->name = drv->codec_name;
478 }
479
480 /* Use SSP0 on Bay Trail CR devices */
481 if (soc_intel_is_byt() && mach->mach_params.acpi_ipc_irq_index == 0) {
482 cht_dailink[dai_index].cpus->dai_name = "ssp0-port";
483 drv->use_ssp0 = true;
484 }
485
486 /* override platform name, if required */
487 snd_soc_card_cht.dev = &pdev->dev;
488 platform_name = mach->mach_params.platform;
489
490 ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
491 platform_name);
492 if (ret_val)
493 return ret_val;
494
495 snd_soc_card_cht.components = rt5670_components();
496
497 drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
498 if (IS_ERR(drv->mclk)) {
499 dev_err(&pdev->dev,
500 "Failed to get MCLK from pmc_plt_clk_3: %ld\n",
501 PTR_ERR(drv->mclk));
502 return PTR_ERR(drv->mclk);
503 }
504 snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
505
506 sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
507
508 /* set card and driver name */
509 if (sof_parent) {
510 snd_soc_card_cht.name = SOF_CARD_NAME;
511 snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
512 } else {
513 snd_soc_card_cht.name = CARD_NAME;
514 snd_soc_card_cht.driver_name = DRIVER_NAME;
515 }
516
517 /* set pm ops */
518 if (sof_parent)
519 pdev->dev.driver->pm = &snd_soc_pm_ops;
520
521 /* register the soc card */
522 ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
523 if (ret_val) {
524 dev_err(&pdev->dev,
525 "snd_soc_register_card failed %d\n", ret_val);
526 return ret_val;
527 }
528 platform_set_drvdata(pdev, &snd_soc_card_cht);
529 return ret_val;
530}
531
532static struct platform_driver snd_cht_mc_driver = {
533 .driver = {
534 .name = "cht-bsw-rt5672",
535 },
536 .probe = snd_cht_mc_probe,
537};
538
539module_platform_driver(snd_cht_mc_driver);
540
541MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
542MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin");
543MODULE_LICENSE("GPL v2");
544MODULE_ALIAS("platform:cht-bsw-rt5672");
1/*
2 * cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms
3 * Cherrytrail and Braswell, with RT5672 codec.
4 *
5 * Copyright (C) 2014 Intel Corp
6 * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
7 * Mengdong Lin <mengdong.lin@intel.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <linux/slab.h>
22#include <sound/pcm.h>
23#include <sound/pcm_params.h>
24#include <sound/soc.h>
25#include <sound/jack.h>
26#include "../../codecs/rt5670.h"
27#include "../atom/sst-atom-controls.h"
28
29/* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */
30#define CHT_PLAT_CLK_3_HZ 19200000
31#define CHT_CODEC_DAI "rt5670-aif1"
32
33static struct snd_soc_jack cht_bsw_headset;
34
35/* Headset jack detection DAPM pins */
36static struct snd_soc_jack_pin cht_bsw_headset_pins[] = {
37 {
38 .pin = "Headset Mic",
39 .mask = SND_JACK_MICROPHONE,
40 },
41 {
42 .pin = "Headphone",
43 .mask = SND_JACK_HEADPHONE,
44 },
45};
46
47static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
48{
49 struct snd_soc_pcm_runtime *rtd;
50
51 list_for_each_entry(rtd, &card->rtd_list, list) {
52 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
53 strlen(CHT_CODEC_DAI)))
54 return rtd->codec_dai;
55 }
56 return NULL;
57}
58
59static int platform_clock_control(struct snd_soc_dapm_widget *w,
60 struct snd_kcontrol *k, int event)
61{
62 struct snd_soc_dapm_context *dapm = w->dapm;
63 struct snd_soc_card *card = dapm->card;
64 struct snd_soc_dai *codec_dai;
65 int ret;
66
67 codec_dai = cht_get_codec_dai(card);
68 if (!codec_dai) {
69 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
70 return -EIO;
71 }
72
73 if (SND_SOC_DAPM_EVENT_ON(event)) {
74 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
75 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
76 CHT_PLAT_CLK_3_HZ, 48000 * 512);
77 if (ret < 0) {
78 dev_err(card->dev, "can't set codec pll: %d\n", ret);
79 return ret;
80 }
81
82 /* set codec sysclk source to PLL */
83 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
84 48000 * 512, SND_SOC_CLOCK_IN);
85 if (ret < 0) {
86 dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
87 return ret;
88 }
89 } else {
90 /* Set codec sysclk source to its internal clock because codec
91 * PLL will be off when idle and MCLK will also be off by ACPI
92 * when codec is runtime suspended. Codec needs clock for jack
93 * detection and button press.
94 */
95 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK,
96 48000 * 512, SND_SOC_CLOCK_IN);
97 }
98 return 0;
99}
100
101static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
102 SND_SOC_DAPM_HP("Headphone", NULL),
103 SND_SOC_DAPM_MIC("Headset Mic", NULL),
104 SND_SOC_DAPM_MIC("Int Mic", NULL),
105 SND_SOC_DAPM_SPK("Ext Spk", NULL),
106 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
107 platform_clock_control, SND_SOC_DAPM_PRE_PMU |
108 SND_SOC_DAPM_POST_PMD),
109};
110
111static const struct snd_soc_dapm_route cht_audio_map[] = {
112 {"IN1P", NULL, "Headset Mic"},
113 {"IN1N", NULL, "Headset Mic"},
114 {"DMIC L1", NULL, "Int Mic"},
115 {"DMIC R1", NULL, "Int Mic"},
116 {"Headphone", NULL, "HPOL"},
117 {"Headphone", NULL, "HPOR"},
118 {"Ext Spk", NULL, "SPOLP"},
119 {"Ext Spk", NULL, "SPOLN"},
120 {"Ext Spk", NULL, "SPORP"},
121 {"Ext Spk", NULL, "SPORN"},
122 {"AIF1 Playback", NULL, "ssp2 Tx"},
123 {"ssp2 Tx", NULL, "codec_out0"},
124 {"ssp2 Tx", NULL, "codec_out1"},
125 {"codec_in0", NULL, "ssp2 Rx"},
126 {"codec_in1", NULL, "ssp2 Rx"},
127 {"ssp2 Rx", NULL, "AIF1 Capture"},
128 {"Headphone", NULL, "Platform Clock"},
129 {"Headset Mic", NULL, "Platform Clock"},
130 {"Int Mic", NULL, "Platform Clock"},
131 {"Ext Spk", NULL, "Platform Clock"},
132};
133
134static const struct snd_kcontrol_new cht_mc_controls[] = {
135 SOC_DAPM_PIN_SWITCH("Headphone"),
136 SOC_DAPM_PIN_SWITCH("Headset Mic"),
137 SOC_DAPM_PIN_SWITCH("Int Mic"),
138 SOC_DAPM_PIN_SWITCH("Ext Spk"),
139};
140
141static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
142 struct snd_pcm_hw_params *params)
143{
144 struct snd_soc_pcm_runtime *rtd = substream->private_data;
145 struct snd_soc_dai *codec_dai = rtd->codec_dai;
146 int ret;
147
148 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
149 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
150 CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
151 if (ret < 0) {
152 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
153 return ret;
154 }
155
156 /* set codec sysclk source to PLL */
157 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
158 params_rate(params) * 512,
159 SND_SOC_CLOCK_IN);
160 if (ret < 0) {
161 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
162 return ret;
163 }
164 return 0;
165}
166
167static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
168{
169 int ret;
170 struct snd_soc_dai *codec_dai = runtime->codec_dai;
171 struct snd_soc_codec *codec = codec_dai->codec;
172
173 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
174 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
175 if (ret < 0) {
176 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
177 return ret;
178 }
179
180 /* Select codec ASRC clock source to track I2S1 clock, because codec
181 * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot
182 * be supported by RT5672. Otherwise, ASRC will be disabled and cause
183 * noise.
184 */
185 rt5670_sel_asrc_clk_src(codec,
186 RT5670_DA_STEREO_FILTER
187 | RT5670_DA_MONO_L_FILTER
188 | RT5670_DA_MONO_R_FILTER
189 | RT5670_AD_STEREO_FILTER
190 | RT5670_AD_MONO_L_FILTER
191 | RT5670_AD_MONO_R_FILTER,
192 RT5670_CLK_SEL_I2S1_ASRC);
193
194 ret = snd_soc_card_jack_new(runtime->card, "Headset",
195 SND_JACK_HEADSET | SND_JACK_BTN_0 |
196 SND_JACK_BTN_1 | SND_JACK_BTN_2, &cht_bsw_headset,
197 cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins));
198 if (ret)
199 return ret;
200
201 rt5670_set_jack_detect(codec, &cht_bsw_headset);
202 return 0;
203}
204
205static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
206 struct snd_pcm_hw_params *params)
207{
208 struct snd_interval *rate = hw_param_interval(params,
209 SNDRV_PCM_HW_PARAM_RATE);
210 struct snd_interval *channels = hw_param_interval(params,
211 SNDRV_PCM_HW_PARAM_CHANNELS);
212
213 /* The DSP will covert the FE rate to 48k, stereo, 24bits */
214 rate->min = rate->max = 48000;
215 channels->min = channels->max = 2;
216
217 /* set SSP2 to 24-bit */
218 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
219 return 0;
220}
221
222static int cht_aif1_startup(struct snd_pcm_substream *substream)
223{
224 return snd_pcm_hw_constraint_single(substream->runtime,
225 SNDRV_PCM_HW_PARAM_RATE, 48000);
226}
227
228static struct snd_soc_ops cht_aif1_ops = {
229 .startup = cht_aif1_startup,
230};
231
232static struct snd_soc_ops cht_be_ssp2_ops = {
233 .hw_params = cht_aif1_hw_params,
234};
235
236static struct snd_soc_dai_link cht_dailink[] = {
237 /* Front End DAI links */
238 [MERR_DPCM_AUDIO] = {
239 .name = "Audio Port",
240 .stream_name = "Audio",
241 .cpu_dai_name = "media-cpu-dai",
242 .codec_dai_name = "snd-soc-dummy-dai",
243 .codec_name = "snd-soc-dummy",
244 .platform_name = "sst-mfld-platform",
245 .nonatomic = true,
246 .dynamic = 1,
247 .dpcm_playback = 1,
248 .dpcm_capture = 1,
249 .ops = &cht_aif1_ops,
250 },
251 [MERR_DPCM_DEEP_BUFFER] = {
252 .name = "Deep-Buffer Audio Port",
253 .stream_name = "Deep-Buffer Audio",
254 .cpu_dai_name = "deepbuffer-cpu-dai",
255 .codec_dai_name = "snd-soc-dummy-dai",
256 .codec_name = "snd-soc-dummy",
257 .platform_name = "sst-mfld-platform",
258 .nonatomic = true,
259 .dynamic = 1,
260 .dpcm_playback = 1,
261 .ops = &cht_aif1_ops,
262 },
263 [MERR_DPCM_COMPR] = {
264 .name = "Compressed Port",
265 .stream_name = "Compress",
266 .cpu_dai_name = "compress-cpu-dai",
267 .codec_dai_name = "snd-soc-dummy-dai",
268 .codec_name = "snd-soc-dummy",
269 .platform_name = "sst-mfld-platform",
270 },
271
272 /* Back End DAI links */
273 {
274 /* SSP2 - Codec */
275 .name = "SSP2-Codec",
276 .be_id = 1,
277 .cpu_dai_name = "ssp2-port",
278 .platform_name = "sst-mfld-platform",
279 .no_pcm = 1,
280 .nonatomic = true,
281 .codec_dai_name = "rt5670-aif1",
282 .codec_name = "i2c-10EC5670:00",
283 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
284 | SND_SOC_DAIFMT_CBS_CFS,
285 .init = cht_codec_init,
286 .be_hw_params_fixup = cht_codec_fixup,
287 .dpcm_playback = 1,
288 .dpcm_capture = 1,
289 .ops = &cht_be_ssp2_ops,
290 },
291};
292
293static int cht_suspend_pre(struct snd_soc_card *card)
294{
295 struct snd_soc_codec *codec;
296
297 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
298 if (!strcmp(codec->component.name, "i2c-10EC5670:00")) {
299 dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n");
300 rt5670_jack_suspend(codec);
301 break;
302 }
303 }
304 return 0;
305}
306
307static int cht_resume_post(struct snd_soc_card *card)
308{
309 struct snd_soc_codec *codec;
310
311 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
312 if (!strcmp(codec->component.name, "i2c-10EC5670:00")) {
313 dev_dbg(codec->dev, "enabling jack detect for resume.\n");
314 rt5670_jack_resume(codec);
315 break;
316 }
317 }
318
319 return 0;
320}
321
322/* SoC card */
323static struct snd_soc_card snd_soc_card_cht = {
324 .name = "cherrytrailcraudio",
325 .owner = THIS_MODULE,
326 .dai_link = cht_dailink,
327 .num_links = ARRAY_SIZE(cht_dailink),
328 .dapm_widgets = cht_dapm_widgets,
329 .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
330 .dapm_routes = cht_audio_map,
331 .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
332 .controls = cht_mc_controls,
333 .num_controls = ARRAY_SIZE(cht_mc_controls),
334 .suspend_pre = cht_suspend_pre,
335 .resume_post = cht_resume_post,
336};
337
338static int snd_cht_mc_probe(struct platform_device *pdev)
339{
340 int ret_val = 0;
341
342 /* register the soc card */
343 snd_soc_card_cht.dev = &pdev->dev;
344 ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
345 if (ret_val) {
346 dev_err(&pdev->dev,
347 "snd_soc_register_card failed %d\n", ret_val);
348 return ret_val;
349 }
350 platform_set_drvdata(pdev, &snd_soc_card_cht);
351 return ret_val;
352}
353
354static struct platform_driver snd_cht_mc_driver = {
355 .driver = {
356 .name = "cht-bsw-rt5672",
357 },
358 .probe = snd_cht_mc_probe,
359};
360
361module_platform_driver(snd_cht_mc_driver);
362
363MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
364MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin");
365MODULE_LICENSE("GPL v2");
366MODULE_ALIAS("platform:cht-bsw-rt5672");