e4d46d4360d7e88cfdac008e9804bb7fdb310e6f
[sfrench/cifs-2.6.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 #include "../common/sst-acpi.h"
29
30 /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */
31 #define CHT_PLAT_CLK_3_HZ       19200000
32 #define CHT_CODEC_DAI   "rt5670-aif1"
33
34 static struct snd_soc_jack cht_bsw_headset;
35 static char cht_bsw_codec_name[16];
36
37 /* Headset jack detection DAPM pins */
38 static struct snd_soc_jack_pin cht_bsw_headset_pins[] = {
39         {
40                 .pin = "Headset Mic",
41                 .mask = SND_JACK_MICROPHONE,
42         },
43         {
44                 .pin = "Headphone",
45                 .mask = SND_JACK_HEADPHONE,
46         },
47 };
48
49 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
50 {
51         struct snd_soc_pcm_runtime *rtd;
52
53         list_for_each_entry(rtd, &card->rtd_list, list) {
54                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
55                              strlen(CHT_CODEC_DAI)))
56                         return rtd->codec_dai;
57         }
58         return NULL;
59 }
60
61 static int platform_clock_control(struct snd_soc_dapm_widget *w,
62                 struct snd_kcontrol *k, int  event)
63 {
64         struct snd_soc_dapm_context *dapm = w->dapm;
65         struct snd_soc_card *card = dapm->card;
66         struct snd_soc_dai *codec_dai;
67         int ret;
68
69         codec_dai = cht_get_codec_dai(card);
70         if (!codec_dai) {
71                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
72                 return -EIO;
73         }
74
75         if (SND_SOC_DAPM_EVENT_ON(event)) {
76                 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
77                 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
78                                 CHT_PLAT_CLK_3_HZ, 48000 * 512);
79                 if (ret < 0) {
80                         dev_err(card->dev, "can't set codec pll: %d\n", ret);
81                         return ret;
82                 }
83
84                 /* set codec sysclk source to PLL */
85                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
86                         48000 * 512, SND_SOC_CLOCK_IN);
87                 if (ret < 0) {
88                         dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
89                         return ret;
90                 }
91         } else {
92                 /* Set codec sysclk source to its internal clock because codec
93                  * PLL will be off when idle and MCLK will also be off by ACPI
94                  * when codec is runtime suspended. Codec needs clock for jack
95                  * detection and button press.
96                  */
97                 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK,
98                                        48000 * 512, SND_SOC_CLOCK_IN);
99         }
100         return 0;
101 }
102
103 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
104         SND_SOC_DAPM_HP("Headphone", NULL),
105         SND_SOC_DAPM_MIC("Headset Mic", NULL),
106         SND_SOC_DAPM_MIC("Int Mic", NULL),
107         SND_SOC_DAPM_SPK("Ext Spk", NULL),
108         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
109                         platform_clock_control, SND_SOC_DAPM_PRE_PMU |
110                         SND_SOC_DAPM_POST_PMD),
111 };
112
113 static const struct snd_soc_dapm_route cht_audio_map[] = {
114         {"IN1P", NULL, "Headset Mic"},
115         {"IN1N", NULL, "Headset Mic"},
116         {"DMIC L1", NULL, "Int Mic"},
117         {"DMIC R1", NULL, "Int Mic"},
118         {"Headphone", NULL, "HPOL"},
119         {"Headphone", NULL, "HPOR"},
120         {"Ext Spk", NULL, "SPOLP"},
121         {"Ext Spk", NULL, "SPOLN"},
122         {"Ext Spk", NULL, "SPORP"},
123         {"Ext Spk", NULL, "SPORN"},
124         {"AIF1 Playback", NULL, "ssp2 Tx"},
125         {"ssp2 Tx", NULL, "codec_out0"},
126         {"ssp2 Tx", NULL, "codec_out1"},
127         {"codec_in0", NULL, "ssp2 Rx"},
128         {"codec_in1", NULL, "ssp2 Rx"},
129         {"ssp2 Rx", NULL, "AIF1 Capture"},
130         {"Headphone", NULL, "Platform Clock"},
131         {"Headset Mic", NULL, "Platform Clock"},
132         {"Int Mic", NULL, "Platform Clock"},
133         {"Ext Spk", NULL, "Platform Clock"},
134 };
135
136 static const struct snd_kcontrol_new cht_mc_controls[] = {
137         SOC_DAPM_PIN_SWITCH("Headphone"),
138         SOC_DAPM_PIN_SWITCH("Headset Mic"),
139         SOC_DAPM_PIN_SWITCH("Int Mic"),
140         SOC_DAPM_PIN_SWITCH("Ext Spk"),
141 };
142
143 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
144                                         struct snd_pcm_hw_params *params)
145 {
146         struct snd_soc_pcm_runtime *rtd = substream->private_data;
147         struct snd_soc_dai *codec_dai = rtd->codec_dai;
148         int ret;
149
150         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
151         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
152                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
153         if (ret < 0) {
154                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
155                 return ret;
156         }
157
158         /* set codec sysclk source to PLL */
159         ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
160                                      params_rate(params) * 512,
161                                      SND_SOC_CLOCK_IN);
162         if (ret < 0) {
163                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
164                 return ret;
165         }
166         return 0;
167 }
168
169 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
170 {
171         int ret;
172         struct snd_soc_dai *codec_dai = runtime->codec_dai;
173         struct snd_soc_codec *codec = codec_dai->codec;
174
175         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
176         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
177         if (ret < 0) {
178                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
179                 return ret;
180         }
181
182         /* Select codec ASRC clock source to track I2S1 clock, because codec
183          * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot
184          * be supported by RT5672. Otherwise, ASRC will be disabled and cause
185          * noise.
186          */
187         rt5670_sel_asrc_clk_src(codec,
188                                 RT5670_DA_STEREO_FILTER
189                                 | RT5670_DA_MONO_L_FILTER
190                                 | RT5670_DA_MONO_R_FILTER
191                                 | RT5670_AD_STEREO_FILTER
192                                 | RT5670_AD_MONO_L_FILTER
193                                 | RT5670_AD_MONO_R_FILTER,
194                                 RT5670_CLK_SEL_I2S1_ASRC);
195
196         ret = snd_soc_card_jack_new(runtime->card, "Headset",
197                 SND_JACK_HEADSET | SND_JACK_BTN_0 |
198                 SND_JACK_BTN_1 | SND_JACK_BTN_2, &cht_bsw_headset,
199                 cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins));
200         if (ret)
201                 return ret;
202
203         rt5670_set_jack_detect(codec, &cht_bsw_headset);
204         return 0;
205 }
206
207 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
208                             struct snd_pcm_hw_params *params)
209 {
210         struct snd_interval *rate = hw_param_interval(params,
211                         SNDRV_PCM_HW_PARAM_RATE);
212         struct snd_interval *channels = hw_param_interval(params,
213                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
214
215         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
216         rate->min = rate->max = 48000;
217         channels->min = channels->max = 2;
218
219         /* set SSP2 to 24-bit */
220         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
221         return 0;
222 }
223
224 static int cht_aif1_startup(struct snd_pcm_substream *substream)
225 {
226         return snd_pcm_hw_constraint_single(substream->runtime,
227                         SNDRV_PCM_HW_PARAM_RATE, 48000);
228 }
229
230 static const struct snd_soc_ops cht_aif1_ops = {
231         .startup = cht_aif1_startup,
232 };
233
234 static const struct snd_soc_ops cht_be_ssp2_ops = {
235         .hw_params = cht_aif1_hw_params,
236 };
237
238 static struct snd_soc_dai_link cht_dailink[] = {
239         /* Front End DAI links */
240         [MERR_DPCM_AUDIO] = {
241                 .name = "Audio Port",
242                 .stream_name = "Audio",
243                 .cpu_dai_name = "media-cpu-dai",
244                 .codec_dai_name = "snd-soc-dummy-dai",
245                 .codec_name = "snd-soc-dummy",
246                 .platform_name = "sst-mfld-platform",
247                 .nonatomic = true,
248                 .dynamic = 1,
249                 .dpcm_playback = 1,
250                 .dpcm_capture = 1,
251                 .ops = &cht_aif1_ops,
252         },
253         [MERR_DPCM_DEEP_BUFFER] = {
254                 .name = "Deep-Buffer Audio Port",
255                 .stream_name = "Deep-Buffer Audio",
256                 .cpu_dai_name = "deepbuffer-cpu-dai",
257                 .codec_dai_name = "snd-soc-dummy-dai",
258                 .codec_name = "snd-soc-dummy",
259                 .platform_name = "sst-mfld-platform",
260                 .nonatomic = true,
261                 .dynamic = 1,
262                 .dpcm_playback = 1,
263                 .ops = &cht_aif1_ops,
264         },
265         [MERR_DPCM_COMPR] = {
266                 .name = "Compressed Port",
267                 .stream_name = "Compress",
268                 .cpu_dai_name = "compress-cpu-dai",
269                 .codec_dai_name = "snd-soc-dummy-dai",
270                 .codec_name = "snd-soc-dummy",
271                 .platform_name = "sst-mfld-platform",
272         },
273
274         /* Back End DAI links */
275         {
276                 /* SSP2 - Codec */
277                 .name = "SSP2-Codec",
278                 .id = 1,
279                 .cpu_dai_name = "ssp2-port",
280                 .platform_name = "sst-mfld-platform",
281                 .no_pcm = 1,
282                 .nonatomic = true,
283                 .codec_dai_name = "rt5670-aif1",
284                 .codec_name = "i2c-10EC5670:00",
285                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
286                                         | SND_SOC_DAIFMT_CBS_CFS,
287                 .init = cht_codec_init,
288                 .be_hw_params_fixup = cht_codec_fixup,
289                 .dpcm_playback = 1,
290                 .dpcm_capture = 1,
291                 .ops = &cht_be_ssp2_ops,
292         },
293 };
294
295 static int cht_suspend_pre(struct snd_soc_card *card)
296 {
297         struct snd_soc_component *component;
298
299         list_for_each_entry(component, &card->component_dev_list, card_list) {
300                 if (!strcmp(component->name, "i2c-10EC5670:00")) {
301                         struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
302
303                         dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n");
304                         rt5670_jack_suspend(codec);
305                         break;
306                 }
307         }
308         return 0;
309 }
310
311 static int cht_resume_post(struct snd_soc_card *card)
312 {
313         struct snd_soc_component *component;
314
315         list_for_each_entry(component, &card->component_dev_list, card_list) {
316                 if (!strcmp(component->name, "i2c-10EC5670:00")) {
317                         struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
318
319                         dev_dbg(codec->dev, "enabling jack detect for resume.\n");
320                         rt5670_jack_resume(codec);
321                         break;
322                 }
323         }
324
325         return 0;
326 }
327
328 /* SoC card */
329 static struct snd_soc_card snd_soc_card_cht = {
330         .name = "cherrytrailcraudio",
331         .owner = THIS_MODULE,
332         .dai_link = cht_dailink,
333         .num_links = ARRAY_SIZE(cht_dailink),
334         .dapm_widgets = cht_dapm_widgets,
335         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
336         .dapm_routes = cht_audio_map,
337         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
338         .controls = cht_mc_controls,
339         .num_controls = ARRAY_SIZE(cht_mc_controls),
340         .suspend_pre = cht_suspend_pre,
341         .resume_post = cht_resume_post,
342 };
343
344 #define RT5672_I2C_DEFAULT      "i2c-10EC5670:00"
345
346 static int snd_cht_mc_probe(struct platform_device *pdev)
347 {
348         int ret_val = 0;
349         struct sst_acpi_mach *mach = pdev->dev.platform_data;
350         const char *i2c_name;
351         int i;
352
353         strcpy(cht_bsw_codec_name, RT5672_I2C_DEFAULT);
354
355         /* fixup codec name based on HID */
356         if (mach) {
357                 i2c_name = sst_acpi_find_name_from_hid(mach->id);
358                 if (i2c_name) {
359                         snprintf(cht_bsw_codec_name, sizeof(cht_bsw_codec_name),
360                                  "i2c-%s", i2c_name);
361                         for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) {
362                                 if (!strcmp(cht_dailink[i].codec_name,
363                                             RT5672_I2C_DEFAULT)) {
364                                         cht_dailink[i].codec_name =
365                                                 cht_bsw_codec_name;
366                                         break;
367                                 }
368                         }
369                 }
370         }
371
372         /* register the soc card */
373         snd_soc_card_cht.dev = &pdev->dev;
374         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
375         if (ret_val) {
376                 dev_err(&pdev->dev,
377                         "snd_soc_register_card failed %d\n", ret_val);
378                 return ret_val;
379         }
380         platform_set_drvdata(pdev, &snd_soc_card_cht);
381         return ret_val;
382 }
383
384 static struct platform_driver snd_cht_mc_driver = {
385         .driver = {
386                 .name = "cht-bsw-rt5672",
387         },
388         .probe = snd_cht_mc_probe,
389 };
390
391 module_platform_driver(snd_cht_mc_driver);
392
393 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
394 MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin");
395 MODULE_LICENSE("GPL v2");
396 MODULE_ALIAS("platform:cht-bsw-rt5672");