GNU Linux-libre 4.9.304-gnu1
[releases.git] / sound / soc / intel / boards / cht_bsw_rt5672.c
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
33 static struct snd_soc_jack cht_bsw_headset;
34
35 /* Headset jack detection DAPM pins */
36 static 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
47 static 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
59 static 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
101 static 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
111 static 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
134 static 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
141 static 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
167 static 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
205 static 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
222 static 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
228 static struct snd_soc_ops cht_aif1_ops = {
229         .startup = cht_aif1_startup,
230 };
231
232 static struct snd_soc_ops cht_be_ssp2_ops = {
233         .hw_params = cht_aif1_hw_params,
234 };
235
236 static 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                 .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
293 static 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
307 static 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 */
323 static 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
338 static 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
354 static struct platform_driver snd_cht_mc_driver = {
355         .driver = {
356                 .name = "cht-bsw-rt5672",
357         },
358         .probe = snd_cht_mc_probe,
359 };
360
361 module_platform_driver(snd_cht_mc_driver);
362
363 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
364 MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin");
365 MODULE_LICENSE("GPL v2");
366 MODULE_ALIAS("platform:cht-bsw-rt5672");