ASoC: intel: Fix PM and non-atomic crash in bytcr drivers
[sfrench/cifs-2.6.git] / sound / soc / intel / boards / bytcr_rt5640.c
1 /*
2  *  byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform
3  *
4  *  Copyright (C) 2014 Intel Corp
5  *  Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
6  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; version 2 of the License.
11  *
12  *  This program is distributed in the hope that it will be useful, but
13  *  WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  *  General Public License for more details.
16  *
17  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
18  */
19
20 #include <linux/init.h>
21 #include <linux/module.h>
22 #include <linux/platform_device.h>
23 #include <linux/acpi.h>
24 #include <linux/device.h>
25 #include <linux/dmi.h>
26 #include <linux/slab.h>
27 #include <asm/cpu_device_id.h>
28 #include <asm/platform_sst_audio.h>
29 #include <linux/clk.h>
30 #include <sound/pcm.h>
31 #include <sound/pcm_params.h>
32 #include <sound/soc.h>
33 #include <sound/jack.h>
34 #include "../../codecs/rt5640.h"
35 #include "../atom/sst-atom-controls.h"
36 #include "../common/sst-acpi.h"
37 #include "../common/sst-dsp.h"
38
39 enum {
40         BYT_RT5640_DMIC1_MAP,
41         BYT_RT5640_DMIC2_MAP,
42         BYT_RT5640_IN1_MAP,
43         BYT_RT5640_IN3_MAP,
44 };
45
46 #define BYT_RT5640_MAP(quirk)   ((quirk) & 0xff)
47 #define BYT_RT5640_DMIC_EN      BIT(16)
48 #define BYT_RT5640_MONO_SPEAKER BIT(17)
49 #define BYT_RT5640_DIFF_MIC     BIT(18) /* defaut is single-ended */
50 #define BYT_RT5640_SSP2_AIF2     BIT(19) /* default is using AIF1  */
51 #define BYT_RT5640_SSP0_AIF1     BIT(20)
52 #define BYT_RT5640_SSP0_AIF2     BIT(21)
53 #define BYT_RT5640_MCLK_EN      BIT(22)
54 #define BYT_RT5640_MCLK_25MHZ   BIT(23)
55
56 struct byt_rt5640_private {
57         struct clk *mclk;
58 };
59
60 static unsigned long byt_rt5640_quirk = BYT_RT5640_MCLK_EN;
61
62 static void log_quirks(struct device *dev)
63 {
64         if (BYT_RT5640_MAP(byt_rt5640_quirk) == BYT_RT5640_DMIC1_MAP)
65                 dev_info(dev, "quirk DMIC1_MAP enabled");
66         if (BYT_RT5640_MAP(byt_rt5640_quirk) == BYT_RT5640_DMIC2_MAP)
67                 dev_info(dev, "quirk DMIC2_MAP enabled");
68         if (BYT_RT5640_MAP(byt_rt5640_quirk) == BYT_RT5640_IN1_MAP)
69                 dev_info(dev, "quirk IN1_MAP enabled");
70         if (BYT_RT5640_MAP(byt_rt5640_quirk) == BYT_RT5640_IN3_MAP)
71                 dev_info(dev, "quirk IN3_MAP enabled");
72         if (byt_rt5640_quirk & BYT_RT5640_DMIC_EN)
73                 dev_info(dev, "quirk DMIC enabled");
74         if (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER)
75                 dev_info(dev, "quirk MONO_SPEAKER enabled");
76         if (byt_rt5640_quirk & BYT_RT5640_DIFF_MIC)
77                 dev_info(dev, "quirk DIFF_MIC enabled");
78         if (byt_rt5640_quirk & BYT_RT5640_SSP2_AIF2)
79                 dev_info(dev, "quirk SSP2_AIF2 enabled");
80         if (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1)
81                 dev_info(dev, "quirk SSP0_AIF1 enabled");
82         if (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2)
83                 dev_info(dev, "quirk SSP0_AIF2 enabled");
84         if (byt_rt5640_quirk & BYT_RT5640_MCLK_EN)
85                 dev_info(dev, "quirk MCLK_EN enabled");
86         if (byt_rt5640_quirk & BYT_RT5640_MCLK_25MHZ)
87                 dev_info(dev, "quirk MCLK_25MHZ enabled");
88 }
89
90
91 #define BYT_CODEC_DAI1  "rt5640-aif1"
92 #define BYT_CODEC_DAI2  "rt5640-aif2"
93
94 static inline struct snd_soc_dai *byt_get_codec_dai(struct snd_soc_card *card)
95 {
96         struct snd_soc_pcm_runtime *rtd;
97
98         list_for_each_entry(rtd, &card->rtd_list, list) {
99                 if (!strncmp(rtd->codec_dai->name, BYT_CODEC_DAI1,
100                              strlen(BYT_CODEC_DAI1)))
101                         return rtd->codec_dai;
102                 if (!strncmp(rtd->codec_dai->name, BYT_CODEC_DAI2,
103                                 strlen(BYT_CODEC_DAI2)))
104                         return rtd->codec_dai;
105
106         }
107         return NULL;
108 }
109
110 static int platform_clock_control(struct snd_soc_dapm_widget *w,
111                                   struct snd_kcontrol *k, int  event)
112 {
113         struct snd_soc_dapm_context *dapm = w->dapm;
114         struct snd_soc_card *card = dapm->card;
115         struct snd_soc_dai *codec_dai;
116         struct byt_rt5640_private *priv = snd_soc_card_get_drvdata(card);
117         int ret;
118
119         codec_dai = byt_get_codec_dai(card);
120         if (!codec_dai) {
121                 dev_err(card->dev,
122                         "Codec dai not found; Unable to set platform clock\n");
123                 return -EIO;
124         }
125
126         if (SND_SOC_DAPM_EVENT_ON(event)) {
127                 if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && priv->mclk) {
128                         ret = clk_prepare_enable(priv->mclk);
129                         if (ret < 0) {
130                                 dev_err(card->dev,
131                                         "could not configure MCLK state");
132                                 return ret;
133                         }
134                 }
135                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
136                                              48000 * 512,
137                                              SND_SOC_CLOCK_IN);
138         } else {
139                 /*
140                  * Set codec clock source to internal clock before
141                  * turning off the platform clock. Codec needs clock
142                  * for Jack detection and button press
143                  */
144                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_RCCLK,
145                                              48000 * 512,
146                                              SND_SOC_CLOCK_IN);
147                 if (!ret) {
148                         if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && priv->mclk)
149                                 clk_disable_unprepare(priv->mclk);
150                 }
151         }
152
153         if (ret < 0) {
154                 dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
155                 return ret;
156         }
157
158         return 0;
159 }
160
161 static const struct snd_soc_dapm_widget byt_rt5640_widgets[] = {
162         SND_SOC_DAPM_HP("Headphone", NULL),
163         SND_SOC_DAPM_MIC("Headset Mic", NULL),
164         SND_SOC_DAPM_MIC("Internal Mic", NULL),
165         SND_SOC_DAPM_SPK("Speaker", NULL),
166         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
167                             platform_clock_control, SND_SOC_DAPM_PRE_PMU |
168                             SND_SOC_DAPM_POST_PMD),
169
170 };
171
172 static const struct snd_soc_dapm_route byt_rt5640_audio_map[] = {
173         {"Headphone", NULL, "Platform Clock"},
174         {"Headset Mic", NULL, "Platform Clock"},
175         {"Internal Mic", NULL, "Platform Clock"},
176         {"Speaker", NULL, "Platform Clock"},
177
178         {"Headset Mic", NULL, "MICBIAS1"},
179         {"IN2P", NULL, "Headset Mic"},
180         {"Headphone", NULL, "HPOL"},
181         {"Headphone", NULL, "HPOR"},
182 };
183
184 static const struct snd_soc_dapm_route byt_rt5640_intmic_dmic1_map[] = {
185         {"DMIC1", NULL, "Internal Mic"},
186 };
187
188 static const struct snd_soc_dapm_route byt_rt5640_intmic_dmic2_map[] = {
189         {"DMIC2", NULL, "Internal Mic"},
190 };
191
192 static const struct snd_soc_dapm_route byt_rt5640_intmic_in1_map[] = {
193         {"Internal Mic", NULL, "MICBIAS1"},
194         {"IN1P", NULL, "Internal Mic"},
195 };
196
197 static const struct snd_soc_dapm_route byt_rt5640_intmic_in3_map[] = {
198         {"Internal Mic", NULL, "MICBIAS1"},
199         {"IN3P", NULL, "Internal Mic"},
200 };
201
202 static const struct snd_soc_dapm_route byt_rt5640_ssp2_aif1_map[] = {
203         {"ssp2 Tx", NULL, "codec_out0"},
204         {"ssp2 Tx", NULL, "codec_out1"},
205         {"codec_in0", NULL, "ssp2 Rx"},
206         {"codec_in1", NULL, "ssp2 Rx"},
207
208         {"AIF1 Playback", NULL, "ssp2 Tx"},
209         {"ssp2 Rx", NULL, "AIF1 Capture"},
210 };
211
212 static const struct snd_soc_dapm_route byt_rt5640_ssp2_aif2_map[] = {
213         {"ssp2 Tx", NULL, "codec_out0"},
214         {"ssp2 Tx", NULL, "codec_out1"},
215         {"codec_in0", NULL, "ssp2 Rx"},
216         {"codec_in1", NULL, "ssp2 Rx"},
217
218         {"AIF2 Playback", NULL, "ssp2 Tx"},
219         {"ssp2 Rx", NULL, "AIF2 Capture"},
220 };
221
222 static const struct snd_soc_dapm_route byt_rt5640_ssp0_aif1_map[] = {
223         {"ssp0 Tx", NULL, "modem_out"},
224         {"modem_in", NULL, "ssp0 Rx"},
225
226         {"AIF1 Playback", NULL, "ssp0 Tx"},
227         {"ssp0 Rx", NULL, "AIF1 Capture"},
228 };
229
230 static const struct snd_soc_dapm_route byt_rt5640_ssp0_aif2_map[] = {
231         {"ssp0 Tx", NULL, "modem_out"},
232         {"modem_in", NULL, "ssp0 Rx"},
233
234         {"AIF2 Playback", NULL, "ssp0 Tx"},
235         {"ssp0 Rx", NULL, "AIF2 Capture"},
236 };
237
238 static const struct snd_soc_dapm_route byt_rt5640_stereo_spk_map[] = {
239         {"Speaker", NULL, "SPOLP"},
240         {"Speaker", NULL, "SPOLN"},
241         {"Speaker", NULL, "SPORP"},
242         {"Speaker", NULL, "SPORN"},
243 };
244
245 static const struct snd_soc_dapm_route byt_rt5640_mono_spk_map[] = {
246         {"Speaker", NULL, "SPOLP"},
247         {"Speaker", NULL, "SPOLN"},
248 };
249
250 static const struct snd_kcontrol_new byt_rt5640_controls[] = {
251         SOC_DAPM_PIN_SWITCH("Headphone"),
252         SOC_DAPM_PIN_SWITCH("Headset Mic"),
253         SOC_DAPM_PIN_SWITCH("Internal Mic"),
254         SOC_DAPM_PIN_SWITCH("Speaker"),
255 };
256
257 static int byt_rt5640_aif1_hw_params(struct snd_pcm_substream *substream,
258                                         struct snd_pcm_hw_params *params)
259 {
260         struct snd_soc_pcm_runtime *rtd = substream->private_data;
261         struct snd_soc_dai *codec_dai = rtd->codec_dai;
262         int ret;
263
264         ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
265                                      params_rate(params) * 512,
266                                      SND_SOC_CLOCK_IN);
267
268         if (ret < 0) {
269                 dev_err(rtd->dev, "can't set codec clock %d\n", ret);
270                 return ret;
271         }
272
273         if (!(byt_rt5640_quirk & BYT_RT5640_MCLK_EN)) {
274                 /* use bitclock as PLL input */
275                 if ((byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1) ||
276                         (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2)) {
277
278                         /* 2x16 bit slots on SSP0 */
279                         ret = snd_soc_dai_set_pll(codec_dai, 0,
280                                                 RT5640_PLL1_S_BCLK1,
281                                                 params_rate(params) * 32,
282                                                 params_rate(params) * 512);
283                 } else {
284                         /* 2x15 bit slots on SSP2 */
285                         ret = snd_soc_dai_set_pll(codec_dai, 0,
286                                                 RT5640_PLL1_S_BCLK1,
287                                                 params_rate(params) * 50,
288                                                 params_rate(params) * 512);
289                 }
290         } else {
291                 if (byt_rt5640_quirk & BYT_RT5640_MCLK_25MHZ) {
292                         ret = snd_soc_dai_set_pll(codec_dai, 0,
293                                                 RT5640_PLL1_S_MCLK,
294                                                 25000000,
295                                                 params_rate(params) * 512);
296                 } else {
297                         ret = snd_soc_dai_set_pll(codec_dai, 0,
298                                                 RT5640_PLL1_S_MCLK,
299                                                 19200000,
300                                                 params_rate(params) * 512);
301                 }
302         }
303
304         if (ret < 0) {
305                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
306                 return ret;
307         }
308
309         return 0;
310 }
311
312 static int byt_rt5640_quirk_cb(const struct dmi_system_id *id)
313 {
314         byt_rt5640_quirk = (unsigned long)id->driver_data;
315         return 1;
316 }
317
318 static const struct dmi_system_id byt_rt5640_quirk_table[] = {
319         {
320                 .callback = byt_rt5640_quirk_cb,
321                 .matches = {
322                         DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
323                         DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
324                 },
325                 .driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
326                                                  BYT_RT5640_MCLK_EN),
327         },
328         {
329                 .callback = byt_rt5640_quirk_cb,
330                 .matches = {
331                         DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
332                         DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TAF"),
333                 },
334                 .driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
335                                                  BYT_RT5640_MONO_SPEAKER |
336                                                  BYT_RT5640_DIFF_MIC |
337                                                  BYT_RT5640_SSP0_AIF2 |
338                                                  BYT_RT5640_MCLK_EN
339                                                  ),
340         },
341         {
342                 .callback = byt_rt5640_quirk_cb,
343                 .matches = {
344                         DMI_EXACT_MATCH(DMI_SYS_VENDOR, "DellInc."),
345                         DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Venue 8 Pro 5830"),
346                 },
347                 .driver_data = (unsigned long *)(BYT_RT5640_DMIC2_MAP |
348                                                  BYT_RT5640_DMIC_EN |
349                                                  BYT_RT5640_MCLK_EN),
350         },
351         {
352                 .callback = byt_rt5640_quirk_cb,
353                 .matches = {
354                         DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
355                         DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "HP ElitePad 1000 G2"),
356                 },
357                 .driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
358                                                  BYT_RT5640_MCLK_EN),
359         },
360         {
361                 .callback = byt_rt5640_quirk_cb,
362                 .matches = {
363                         DMI_MATCH(DMI_SYS_VENDOR, "Circuitco"),
364                         DMI_MATCH(DMI_PRODUCT_NAME, "Minnowboard Max B3 PLATFORM"),
365                 },
366                 .driver_data = (unsigned long *)(BYT_RT5640_DMIC1_MAP |
367                                                  BYT_RT5640_DMIC_EN),
368         },
369         {
370                 .callback = byt_rt5640_quirk_cb,
371                 .matches = {
372                         DMI_MATCH(DMI_BOARD_VENDOR, "TECLAST"),
373                         DMI_MATCH(DMI_BOARD_NAME, "tPAD"),
374                 },
375                 .driver_data = (unsigned long *)(BYT_RT5640_IN3_MAP |
376                                                 BYT_RT5640_MCLK_EN |
377                                                 BYT_RT5640_SSP0_AIF1),
378         },
379         {
380                 .callback = byt_rt5640_quirk_cb,
381                 .matches = {
382                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
383                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire SW5-012"),
384                 },
385                 .driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
386                                                  BYT_RT5640_MCLK_EN |
387                                                  BYT_RT5640_SSP0_AIF1),
388
389         },
390         {
391                 .callback = byt_rt5640_quirk_cb,
392                 .matches = {
393                         DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
394                 },
395                 .driver_data = (unsigned long *)(BYT_RT5640_IN3_MAP |
396                                                  BYT_RT5640_MCLK_EN |
397                                                  BYT_RT5640_SSP0_AIF1),
398
399         },
400         {}
401 };
402
403 static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
404 {
405         int ret;
406         struct snd_soc_codec *codec = runtime->codec;
407         struct snd_soc_card *card = runtime->card;
408         const struct snd_soc_dapm_route *custom_map;
409         struct byt_rt5640_private *priv = snd_soc_card_get_drvdata(card);
410         int num_routes;
411
412         card->dapm.idle_bias_off = true;
413
414         rt5640_sel_asrc_clk_src(codec,
415                                 RT5640_DA_STEREO_FILTER |
416                                 RT5640_DA_MONO_L_FILTER |
417                                 RT5640_DA_MONO_R_FILTER |
418                                 RT5640_AD_STEREO_FILTER |
419                                 RT5640_AD_MONO_L_FILTER |
420                                 RT5640_AD_MONO_R_FILTER,
421                                 RT5640_CLK_SEL_ASRC);
422
423         ret = snd_soc_add_card_controls(card, byt_rt5640_controls,
424                                         ARRAY_SIZE(byt_rt5640_controls));
425         if (ret) {
426                 dev_err(card->dev, "unable to add card controls\n");
427                 return ret;
428         }
429
430         switch (BYT_RT5640_MAP(byt_rt5640_quirk)) {
431         case BYT_RT5640_IN1_MAP:
432                 custom_map = byt_rt5640_intmic_in1_map;
433                 num_routes = ARRAY_SIZE(byt_rt5640_intmic_in1_map);
434                 break;
435         case BYT_RT5640_IN3_MAP:
436                 custom_map = byt_rt5640_intmic_in3_map;
437                 num_routes = ARRAY_SIZE(byt_rt5640_intmic_in3_map);
438                 break;
439         case BYT_RT5640_DMIC2_MAP:
440                 custom_map = byt_rt5640_intmic_dmic2_map;
441                 num_routes = ARRAY_SIZE(byt_rt5640_intmic_dmic2_map);
442                 break;
443         default:
444                 custom_map = byt_rt5640_intmic_dmic1_map;
445                 num_routes = ARRAY_SIZE(byt_rt5640_intmic_dmic1_map);
446         }
447
448         ret = snd_soc_dapm_add_routes(&card->dapm, custom_map, num_routes);
449         if (ret)
450                 return ret;
451
452         if (byt_rt5640_quirk & BYT_RT5640_SSP2_AIF2) {
453                 ret = snd_soc_dapm_add_routes(&card->dapm,
454                                         byt_rt5640_ssp2_aif2_map,
455                                         ARRAY_SIZE(byt_rt5640_ssp2_aif2_map));
456         } else if (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1) {
457                 ret = snd_soc_dapm_add_routes(&card->dapm,
458                                         byt_rt5640_ssp0_aif1_map,
459                                         ARRAY_SIZE(byt_rt5640_ssp0_aif1_map));
460         } else if (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2) {
461                 ret = snd_soc_dapm_add_routes(&card->dapm,
462                                         byt_rt5640_ssp0_aif2_map,
463                                         ARRAY_SIZE(byt_rt5640_ssp0_aif2_map));
464         } else {
465                 ret = snd_soc_dapm_add_routes(&card->dapm,
466                                         byt_rt5640_ssp2_aif1_map,
467                                         ARRAY_SIZE(byt_rt5640_ssp2_aif1_map));
468         }
469         if (ret)
470                 return ret;
471
472         if (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER) {
473                 ret = snd_soc_dapm_add_routes(&card->dapm,
474                                         byt_rt5640_mono_spk_map,
475                                         ARRAY_SIZE(byt_rt5640_mono_spk_map));
476         } else {
477                 ret = snd_soc_dapm_add_routes(&card->dapm,
478                                         byt_rt5640_stereo_spk_map,
479                                         ARRAY_SIZE(byt_rt5640_stereo_spk_map));
480         }
481         if (ret)
482                 return ret;
483
484         if (byt_rt5640_quirk & BYT_RT5640_DIFF_MIC) {
485                 snd_soc_update_bits(codec,  RT5640_IN1_IN2, RT5640_IN_DF1,
486                                     RT5640_IN_DF1);
487         }
488
489         if (byt_rt5640_quirk & BYT_RT5640_DMIC_EN) {
490                 ret = rt5640_dmic_enable(codec, 0, 0);
491                 if (ret)
492                         return ret;
493         }
494
495         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
496         snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
497
498         if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && priv->mclk) {
499                 /*
500                  * The firmware might enable the clock at
501                  * boot (this information may or may not
502                  * be reflected in the enable clock register).
503                  * To change the rate we must disable the clock
504                  * first to cover these cases. Due to common
505                  * clock framework restrictions that do not allow
506                  * to disable a clock that has not been enabled,
507                  * we need to enable the clock first.
508                  */
509                 ret = clk_prepare_enable(priv->mclk);
510                 if (!ret)
511                         clk_disable_unprepare(priv->mclk);
512
513                 if (byt_rt5640_quirk & BYT_RT5640_MCLK_25MHZ)
514                         ret = clk_set_rate(priv->mclk, 25000000);
515                 else
516                         ret = clk_set_rate(priv->mclk, 19200000);
517
518                 if (ret)
519                         dev_err(card->dev, "unable to set MCLK rate\n");
520         }
521
522         return ret;
523 }
524
525 static const struct snd_soc_pcm_stream byt_rt5640_dai_params = {
526         .formats = SNDRV_PCM_FMTBIT_S24_LE,
527         .rate_min = 48000,
528         .rate_max = 48000,
529         .channels_min = 2,
530         .channels_max = 2,
531 };
532
533 static int byt_rt5640_codec_fixup(struct snd_soc_pcm_runtime *rtd,
534                             struct snd_pcm_hw_params *params)
535 {
536         struct snd_interval *rate = hw_param_interval(params,
537                         SNDRV_PCM_HW_PARAM_RATE);
538         struct snd_interval *channels = hw_param_interval(params,
539                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
540         int ret;
541
542         /* The DSP will covert the FE rate to 48k, stereo */
543         rate->min = rate->max = 48000;
544         channels->min = channels->max = 2;
545
546         if ((byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1) ||
547                 (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2)) {
548
549                 /* set SSP0 to 16-bit */
550                 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
551
552                 /*
553                  * Default mode for SSP configuration is TDM 4 slot, override config
554                  * with explicit setting to I2S 2ch 16-bit. The word length is set with
555                  * dai_set_tdm_slot() since there is no other API exposed
556                  */
557                 ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
558                                         SND_SOC_DAIFMT_I2S     |
559                                         SND_SOC_DAIFMT_NB_NF   |
560                                         SND_SOC_DAIFMT_CBS_CFS
561                         );
562                 if (ret < 0) {
563                         dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
564                         return ret;
565                 }
566
567                 ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
568                 if (ret < 0) {
569                         dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
570                         return ret;
571                 }
572
573         } else {
574
575                 /* set SSP2 to 24-bit */
576                 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
577
578                 /*
579                  * Default mode for SSP configuration is TDM 4 slot, override config
580                  * with explicit setting to I2S 2ch 24-bit. The word length is set with
581                  * dai_set_tdm_slot() since there is no other API exposed
582                  */
583                 ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
584                                         SND_SOC_DAIFMT_I2S     |
585                                         SND_SOC_DAIFMT_NB_NF   |
586                                         SND_SOC_DAIFMT_CBS_CFS
587                         );
588                 if (ret < 0) {
589                         dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
590                         return ret;
591                 }
592
593                 ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24);
594                 if (ret < 0) {
595                         dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
596                         return ret;
597                 }
598         }
599         return 0;
600 }
601
602 static int byt_rt5640_aif1_startup(struct snd_pcm_substream *substream)
603 {
604         return snd_pcm_hw_constraint_single(substream->runtime,
605                         SNDRV_PCM_HW_PARAM_RATE, 48000);
606 }
607
608 static const struct snd_soc_ops byt_rt5640_aif1_ops = {
609         .startup = byt_rt5640_aif1_startup,
610 };
611
612 static const struct snd_soc_ops byt_rt5640_be_ssp2_ops = {
613         .hw_params = byt_rt5640_aif1_hw_params,
614 };
615
616 static struct snd_soc_dai_link byt_rt5640_dais[] = {
617         [MERR_DPCM_AUDIO] = {
618                 .name = "Baytrail Audio Port",
619                 .stream_name = "Baytrail Audio",
620                 .cpu_dai_name = "media-cpu-dai",
621                 .codec_dai_name = "snd-soc-dummy-dai",
622                 .codec_name = "snd-soc-dummy",
623                 .platform_name = "sst-mfld-platform",
624                 .nonatomic = true,
625                 .dynamic = 1,
626                 .dpcm_playback = 1,
627                 .dpcm_capture = 1,
628                 .ops = &byt_rt5640_aif1_ops,
629         },
630         [MERR_DPCM_DEEP_BUFFER] = {
631                 .name = "Deep-Buffer Audio Port",
632                 .stream_name = "Deep-Buffer Audio",
633                 .cpu_dai_name = "deepbuffer-cpu-dai",
634                 .codec_dai_name = "snd-soc-dummy-dai",
635                 .codec_name = "snd-soc-dummy",
636                 .platform_name = "sst-mfld-platform",
637                 .nonatomic = true,
638                 .dynamic = 1,
639                 .dpcm_playback = 1,
640                 .ops = &byt_rt5640_aif1_ops,
641         },
642         [MERR_DPCM_COMPR] = {
643                 .name = "Baytrail Compressed Port",
644                 .stream_name = "Baytrail Compress",
645                 .cpu_dai_name = "compress-cpu-dai",
646                 .codec_dai_name = "snd-soc-dummy-dai",
647                 .codec_name = "snd-soc-dummy",
648                 .platform_name = "sst-mfld-platform",
649         },
650                 /* back ends */
651         {
652                 .name = "SSP2-Codec",
653                 .id = 1,
654                 .cpu_dai_name = "ssp2-port", /* overwritten for ssp0 routing */
655                 .platform_name = "sst-mfld-platform",
656                 .no_pcm = 1,
657                 .codec_dai_name = "rt5640-aif1", /* changed w/ quirk */
658                 .codec_name = "i2c-10EC5640:00", /* overwritten with HID */
659                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
660                                                 | SND_SOC_DAIFMT_CBS_CFS,
661                 .be_hw_params_fixup = byt_rt5640_codec_fixup,
662                 .ignore_suspend = 1,
663                 .nonatomic = true,
664                 .dpcm_playback = 1,
665                 .dpcm_capture = 1,
666                 .init = byt_rt5640_init,
667                 .ops = &byt_rt5640_be_ssp2_ops,
668         },
669 };
670
671 /* SoC card */
672 static struct snd_soc_card byt_rt5640_card = {
673         .name = "bytcr-rt5640",
674         .owner = THIS_MODULE,
675         .dai_link = byt_rt5640_dais,
676         .num_links = ARRAY_SIZE(byt_rt5640_dais),
677         .dapm_widgets = byt_rt5640_widgets,
678         .num_dapm_widgets = ARRAY_SIZE(byt_rt5640_widgets),
679         .dapm_routes = byt_rt5640_audio_map,
680         .num_dapm_routes = ARRAY_SIZE(byt_rt5640_audio_map),
681         .fully_routed = true,
682 };
683
684 static char byt_rt5640_codec_name[16]; /* i2c-<HID>:00 with HID being 8 chars */
685 static char byt_rt5640_codec_aif_name[12]; /*  = "rt5640-aif[1|2]" */
686 static char byt_rt5640_cpu_dai_name[10]; /*  = "ssp[0|2]-port" */
687
688 static bool is_valleyview(void)
689 {
690         static const struct x86_cpu_id cpu_ids[] = {
691                 { X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */
692                 {}
693         };
694
695         if (!x86_match_cpu(cpu_ids))
696                 return false;
697         return true;
698 }
699
700 struct acpi_chan_package {   /* ACPICA seems to require 64 bit integers */
701         u64 aif_value;       /* 1: AIF1, 2: AIF2 */
702         u64 mclock_value;    /* usually 25MHz (0x17d7940), ignored */
703 };
704
705 static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
706 {
707         int ret_val = 0;
708         struct sst_acpi_mach *mach;
709         const char *i2c_name = NULL;
710         int i;
711         int dai_index;
712         struct byt_rt5640_private *priv;
713         bool is_bytcr = false;
714
715         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
716         if (!priv)
717                 return -ENOMEM;
718
719         /* register the soc card */
720         byt_rt5640_card.dev = &pdev->dev;
721         mach = byt_rt5640_card.dev->platform_data;
722         snd_soc_card_set_drvdata(&byt_rt5640_card, priv);
723
724         /* fix index of codec dai */
725         dai_index = MERR_DPCM_COMPR + 1;
726         for (i = 0; i < ARRAY_SIZE(byt_rt5640_dais); i++) {
727                 if (!strcmp(byt_rt5640_dais[i].codec_name, "i2c-10EC5640:00")) {
728                         dai_index = i;
729                         break;
730                 }
731         }
732
733         /* fixup codec name based on HID */
734         i2c_name = sst_acpi_find_name_from_hid(mach->id);
735         if (i2c_name != NULL) {
736                 snprintf(byt_rt5640_codec_name, sizeof(byt_rt5640_codec_name),
737                         "%s%s", "i2c-", i2c_name);
738
739                 byt_rt5640_dais[dai_index].codec_name = byt_rt5640_codec_name;
740         }
741
742         /*
743          * swap SSP0 if bytcr is detected
744          * (will be overridden if DMI quirk is detected)
745          */
746         if (is_valleyview()) {
747                 struct sst_platform_info *p_info = mach->pdata;
748                 const struct sst_res_info *res_info = p_info->res_info;
749
750                 if (res_info->acpi_ipc_irq_index == 0)
751                         is_bytcr = true;
752         }
753
754         if (is_bytcr) {
755                 /*
756                  * Baytrail CR platforms may have CHAN package in BIOS, try
757                  * to find relevant routing quirk based as done on Windows
758                  * platforms. We have to read the information directly from the
759                  * BIOS, at this stage the card is not created and the links
760                  * with the codec driver/pdata are non-existent
761                  */
762
763                 struct acpi_chan_package chan_package;
764
765                 /* format specified: 2 64-bit integers */
766                 struct acpi_buffer format = {sizeof("NN"), "NN"};
767                 struct acpi_buffer state = {0, NULL};
768                 struct sst_acpi_package_context pkg_ctx;
769                 bool pkg_found = false;
770
771                 state.length = sizeof(chan_package);
772                 state.pointer = &chan_package;
773
774                 pkg_ctx.name = "CHAN";
775                 pkg_ctx.length = 2;
776                 pkg_ctx.format = &format;
777                 pkg_ctx.state = &state;
778                 pkg_ctx.data_valid = false;
779
780                 pkg_found = sst_acpi_find_package_from_hid(mach->id, &pkg_ctx);
781                 if (pkg_found) {
782                         if (chan_package.aif_value == 1) {
783                                 dev_info(&pdev->dev, "BIOS Routing: AIF1 connected\n");
784                                 byt_rt5640_quirk |= BYT_RT5640_SSP0_AIF1;
785                         } else  if (chan_package.aif_value == 2) {
786                                 dev_info(&pdev->dev, "BIOS Routing: AIF2 connected\n");
787                                 byt_rt5640_quirk |= BYT_RT5640_SSP0_AIF2;
788                         } else {
789                                 dev_info(&pdev->dev, "BIOS Routing isn't valid, ignored\n");
790                                 pkg_found = false;
791                         }
792                 }
793
794                 if (!pkg_found) {
795                         /* no BIOS indications, assume SSP0-AIF2 connection */
796                         byt_rt5640_quirk |= BYT_RT5640_SSP0_AIF2;
797                 }
798
799                 /* change defaults for Baytrail-CR capture */
800                 byt_rt5640_quirk |= BYT_RT5640_IN1_MAP;
801                 byt_rt5640_quirk |= BYT_RT5640_DIFF_MIC;
802         } else {
803                 byt_rt5640_quirk |= (BYT_RT5640_DMIC1_MAP |
804                                 BYT_RT5640_DMIC_EN);
805         }
806
807         /* check quirks before creating card */
808         dmi_check_system(byt_rt5640_quirk_table);
809         log_quirks(&pdev->dev);
810
811         if ((byt_rt5640_quirk & BYT_RT5640_SSP2_AIF2) ||
812             (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2)) {
813
814                 /* fixup codec aif name */
815                 snprintf(byt_rt5640_codec_aif_name,
816                         sizeof(byt_rt5640_codec_aif_name),
817                         "%s", "rt5640-aif2");
818
819                 byt_rt5640_dais[dai_index].codec_dai_name =
820                         byt_rt5640_codec_aif_name;
821         }
822
823         if ((byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1) ||
824             (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2)) {
825
826                 /* fixup cpu dai name name */
827                 snprintf(byt_rt5640_cpu_dai_name,
828                         sizeof(byt_rt5640_cpu_dai_name),
829                         "%s", "ssp0-port");
830
831                 byt_rt5640_dais[dai_index].cpu_dai_name =
832                         byt_rt5640_cpu_dai_name;
833         }
834
835         if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && (is_valleyview())) {
836                 priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
837                 if (IS_ERR(priv->mclk)) {
838                         ret_val = PTR_ERR(priv->mclk);
839
840                         dev_err(&pdev->dev,
841                                 "Failed to get MCLK from pmc_plt_clk_3: %d\n",
842                                 ret_val);
843
844                         /*
845                          * Fall back to bit clock usage for -ENOENT (clock not
846                          * available likely due to missing dependencies), bail
847                          * for all other errors, including -EPROBE_DEFER
848                          */
849                         if (ret_val != -ENOENT)
850                                 return ret_val;
851                         byt_rt5640_quirk &= ~BYT_RT5640_MCLK_EN;
852                 }
853         }
854
855         ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_rt5640_card);
856
857         if (ret_val) {
858                 dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n",
859                         ret_val);
860                 return ret_val;
861         }
862         platform_set_drvdata(pdev, &byt_rt5640_card);
863         return ret_val;
864 }
865
866 static struct platform_driver snd_byt_rt5640_mc_driver = {
867         .driver = {
868                 .name = "bytcr_rt5640",
869         },
870         .probe = snd_byt_rt5640_mc_probe,
871 };
872
873 module_platform_driver(snd_byt_rt5640_mc_driver);
874
875 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
876 MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>");
877 MODULE_LICENSE("GPL v2");
878 MODULE_ALIAS("platform:bytcr_rt5640");