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Linux/sound/soc/intel/boards/cht_bsw_rt5645.c

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  1 /*
  2  *  cht-bsw-rt5645.c - ASoc Machine driver for Intel Cherryview-based platforms
  3  *                     Cherrytrail and Braswell, with RT5645 codec.
  4  *
  5  *  Copyright (C) 2015 Intel Corp
  6  *  Author: Fang, Yang A <yang.a.fang@intel.com>
  7  *              N,Harshapriya <harshapriya.n@intel.com>
  8  *  This file is modified from cht_bsw_rt5672.c
  9  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 10  *
 11  *  This program is free software; you can redistribute it and/or modify
 12  *  it under the terms of the GNU General Public License as published by
 13  *  the Free Software Foundation; version 2 of the License.
 14  *
 15  *  This program is distributed in the hope that it will be useful, but
 16  *  WITHOUT ANY WARRANTY; without even the implied warranty of
 17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 18  *  General Public License for more details.
 19  *
 20  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 21  */
 22 
 23 #include <linux/module.h>
 24 #include <linux/acpi.h>
 25 #include <linux/platform_device.h>
 26 #include <linux/slab.h>
 27 #include <sound/pcm.h>
 28 #include <sound/pcm_params.h>
 29 #include <sound/soc.h>
 30 #include <sound/jack.h>
 31 #include "../../codecs/rt5645.h"
 32 #include "../atom/sst-atom-controls.h"
 33 
 34 #define CHT_PLAT_CLK_3_HZ       19200000
 35 #define CHT_CODEC_DAI   "rt5645-aif1"
 36 
 37 struct cht_acpi_card {
 38         char *codec_id;
 39         int codec_type;
 40         struct snd_soc_card *soc_card;
 41 };
 42 
 43 struct cht_mc_private {
 44         struct snd_soc_jack jack;
 45         struct cht_acpi_card *acpi_card;
 46 };
 47 
 48 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
 49 {
 50         struct snd_soc_pcm_runtime *rtd;
 51 
 52         list_for_each_entry(rtd, &card->rtd_list, list) {
 53                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
 54                              strlen(CHT_CODEC_DAI)))
 55                         return rtd->codec_dai;
 56         }
 57         return NULL;
 58 }
 59 
 60 static int platform_clock_control(struct snd_soc_dapm_widget *w,
 61                 struct snd_kcontrol *k, int  event)
 62 {
 63         struct snd_soc_dapm_context *dapm = w->dapm;
 64         struct snd_soc_card *card = dapm->card;
 65         struct snd_soc_dai *codec_dai;
 66         int ret;
 67 
 68         codec_dai = cht_get_codec_dai(card);
 69         if (!codec_dai) {
 70                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
 71                 return -EIO;
 72         }
 73 
 74         if (!SND_SOC_DAPM_EVENT_OFF(event))
 75                 return 0;
 76 
 77         /* Set codec sysclk source to its internal clock because codec PLL will
 78          * be off when idle and MCLK will also be off by ACPI when codec is
 79          * runtime suspended. Codec needs clock for jack detection and button
 80          * press.
 81          */
 82         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
 83                         0, SND_SOC_CLOCK_IN);
 84         if (ret < 0) {
 85                 dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
 86                 return ret;
 87         }
 88 
 89         return 0;
 90 }
 91 
 92 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
 93         SND_SOC_DAPM_HP("Headphone", NULL),
 94         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 95         SND_SOC_DAPM_MIC("Int Mic", NULL),
 96         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 97         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 98                         platform_clock_control, SND_SOC_DAPM_POST_PMD),
 99 };
100 
101 static const struct snd_soc_dapm_route cht_rt5645_audio_map[] = {
102         {"IN1P", NULL, "Headset Mic"},
103         {"IN1N", NULL, "Headset Mic"},
104         {"DMIC L1", NULL, "Int Mic"},
105         {"DMIC R1", NULL, "Int Mic"},
106         {"Headphone", NULL, "HPOL"},
107         {"Headphone", NULL, "HPOR"},
108         {"Ext Spk", NULL, "SPOL"},
109         {"Ext Spk", NULL, "SPOR"},
110         {"AIF1 Playback", NULL, "ssp2 Tx"},
111         {"ssp2 Tx", NULL, "codec_out0"},
112         {"ssp2 Tx", NULL, "codec_out1"},
113         {"codec_in0", NULL, "ssp2 Rx" },
114         {"codec_in1", NULL, "ssp2 Rx" },
115         {"ssp2 Rx", NULL, "AIF1 Capture"},
116         {"Headphone", NULL, "Platform Clock"},
117         {"Headset Mic", NULL, "Platform Clock"},
118         {"Int Mic", NULL, "Platform Clock"},
119         {"Ext Spk", NULL, "Platform Clock"},
120 };
121 
122 static const struct snd_soc_dapm_route cht_rt5650_audio_map[] = {
123         {"IN1P", NULL, "Headset Mic"},
124         {"IN1N", NULL, "Headset Mic"},
125         {"DMIC L2", NULL, "Int Mic"},
126         {"DMIC R2", NULL, "Int Mic"},
127         {"Headphone", NULL, "HPOL"},
128         {"Headphone", NULL, "HPOR"},
129         {"Ext Spk", NULL, "SPOL"},
130         {"Ext Spk", NULL, "SPOR"},
131         {"AIF1 Playback", NULL, "ssp2 Tx"},
132         {"ssp2 Tx", NULL, "codec_out0"},
133         {"ssp2 Tx", NULL, "codec_out1"},
134         {"codec_in0", NULL, "ssp2 Rx" },
135         {"codec_in1", NULL, "ssp2 Rx" },
136         {"ssp2 Rx", NULL, "AIF1 Capture"},
137         {"Headphone", NULL, "Platform Clock"},
138         {"Headset Mic", NULL, "Platform Clock"},
139         {"Int Mic", NULL, "Platform Clock"},
140         {"Ext Spk", NULL, "Platform Clock"},
141 };
142 
143 static const struct snd_kcontrol_new cht_mc_controls[] = {
144         SOC_DAPM_PIN_SWITCH("Headphone"),
145         SOC_DAPM_PIN_SWITCH("Headset Mic"),
146         SOC_DAPM_PIN_SWITCH("Int Mic"),
147         SOC_DAPM_PIN_SWITCH("Ext Spk"),
148 };
149 
150 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
151         {
152                 .pin    = "Headphone",
153                 .mask   = SND_JACK_HEADPHONE,
154         },
155         {
156                 .pin    = "Headset Mic",
157                 .mask   = SND_JACK_MICROPHONE,
158         },
159 };
160 
161 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
162                              struct snd_pcm_hw_params *params)
163 {
164         struct snd_soc_pcm_runtime *rtd = substream->private_data;
165         struct snd_soc_dai *codec_dai = rtd->codec_dai;
166         int ret;
167 
168         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
169         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
170                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
171         if (ret < 0) {
172                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
173                 return ret;
174         }
175 
176         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1,
177                                 params_rate(params) * 512, SND_SOC_CLOCK_IN);
178         if (ret < 0) {
179                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
180                 return ret;
181         }
182 
183         return 0;
184 }
185 
186 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
187 {
188         int ret;
189         int jack_type;
190         struct snd_soc_codec *codec = runtime->codec;
191         struct snd_soc_dai *codec_dai = runtime->codec_dai;
192         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
193 
194         /* Select clk_i2s1_asrc as ASRC clock source */
195         rt5645_sel_asrc_clk_src(codec,
196                                 RT5645_DA_STEREO_FILTER |
197                                 RT5645_DA_MONO_L_FILTER |
198                                 RT5645_DA_MONO_R_FILTER |
199                                 RT5645_AD_STEREO_FILTER,
200                                 RT5645_CLK_SEL_I2S1_ASRC);
201 
202         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
203         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
204         if (ret < 0) {
205                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
206                 return ret;
207         }
208 
209         if (ctx->acpi_card->codec_type == CODEC_TYPE_RT5650)
210                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
211                                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
212                                         SND_JACK_BTN_2 | SND_JACK_BTN_3;
213         else
214                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
215 
216         ret = snd_soc_card_jack_new(runtime->card, "Headset",
217                                     jack_type, &ctx->jack,
218                                     cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
219         if (ret) {
220                 dev_err(runtime->dev, "Headset jack creation failed %d\n", ret);
221                 return ret;
222         }
223 
224         rt5645_set_jack_detect(codec, &ctx->jack, &ctx->jack, &ctx->jack);
225 
226         return ret;
227 }
228 
229 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
230                             struct snd_pcm_hw_params *params)
231 {
232         struct snd_interval *rate = hw_param_interval(params,
233                         SNDRV_PCM_HW_PARAM_RATE);
234         struct snd_interval *channels = hw_param_interval(params,
235                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
236 
237         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
238         rate->min = rate->max = 48000;
239         channels->min = channels->max = 2;
240 
241         /* set SSP2 to 24-bit */
242         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
243         return 0;
244 }
245 
246 static int cht_aif1_startup(struct snd_pcm_substream *substream)
247 {
248         return snd_pcm_hw_constraint_single(substream->runtime,
249                         SNDRV_PCM_HW_PARAM_RATE, 48000);
250 }
251 
252 static struct snd_soc_ops cht_aif1_ops = {
253         .startup = cht_aif1_startup,
254 };
255 
256 static struct snd_soc_ops cht_be_ssp2_ops = {
257         .hw_params = cht_aif1_hw_params,
258 };
259 
260 static struct snd_soc_dai_link cht_dailink[] = {
261         [MERR_DPCM_AUDIO] = {
262                 .name = "Audio Port",
263                 .stream_name = "Audio",
264                 .cpu_dai_name = "media-cpu-dai",
265                 .codec_dai_name = "snd-soc-dummy-dai",
266                 .codec_name = "snd-soc-dummy",
267                 .platform_name = "sst-mfld-platform",
268                 .nonatomic = true,
269                 .dynamic = 1,
270                 .dpcm_playback = 1,
271                 .dpcm_capture = 1,
272                 .ops = &cht_aif1_ops,
273         },
274         [MERR_DPCM_DEEP_BUFFER] = {
275                 .name = "Deep-Buffer Audio Port",
276                 .stream_name = "Deep-Buffer Audio",
277                 .cpu_dai_name = "deepbuffer-cpu-dai",
278                 .codec_dai_name = "snd-soc-dummy-dai",
279                 .codec_name = "snd-soc-dummy",
280                 .platform_name = "sst-mfld-platform",
281                 .nonatomic = true,
282                 .dynamic = 1,
283                 .dpcm_playback = 1,
284                 .ops = &cht_aif1_ops,
285         },
286         [MERR_DPCM_COMPR] = {
287                 .name = "Compressed Port",
288                 .stream_name = "Compress",
289                 .cpu_dai_name = "compress-cpu-dai",
290                 .codec_dai_name = "snd-soc-dummy-dai",
291                 .codec_name = "snd-soc-dummy",
292                 .platform_name = "sst-mfld-platform",
293         },
294         /* CODEC<->CODEC link */
295         /* back ends */
296         {
297                 .name = "SSP2-Codec",
298                 .id = 1,
299                 .cpu_dai_name = "ssp2-port",
300                 .platform_name = "sst-mfld-platform",
301                 .no_pcm = 1,
302                 .codec_dai_name = "rt5645-aif1",
303                 .codec_name = "i2c-10EC5645:00",
304                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
305                                         | SND_SOC_DAIFMT_CBS_CFS,
306                 .init = cht_codec_init,
307                 .be_hw_params_fixup = cht_codec_fixup,
308                 .nonatomic = true,
309                 .dpcm_playback = 1,
310                 .dpcm_capture = 1,
311                 .ops = &cht_be_ssp2_ops,
312         },
313 };
314 
315 /* SoC card */
316 static struct snd_soc_card snd_soc_card_chtrt5645 = {
317         .name = "chtrt5645",
318         .owner = THIS_MODULE,
319         .dai_link = cht_dailink,
320         .num_links = ARRAY_SIZE(cht_dailink),
321         .dapm_widgets = cht_dapm_widgets,
322         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
323         .dapm_routes = cht_rt5645_audio_map,
324         .num_dapm_routes = ARRAY_SIZE(cht_rt5645_audio_map),
325         .controls = cht_mc_controls,
326         .num_controls = ARRAY_SIZE(cht_mc_controls),
327 };
328 
329 static struct snd_soc_card snd_soc_card_chtrt5650 = {
330         .name = "chtrt5650",
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_rt5650_audio_map,
337         .num_dapm_routes = ARRAY_SIZE(cht_rt5650_audio_map),
338         .controls = cht_mc_controls,
339         .num_controls = ARRAY_SIZE(cht_mc_controls),
340 };
341 
342 static struct cht_acpi_card snd_soc_cards[] = {
343         {"10EC5645", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
344         {"10EC5650", CODEC_TYPE_RT5650, &snd_soc_card_chtrt5650},
345 };
346 
347 static int snd_cht_mc_probe(struct platform_device *pdev)
348 {
349         int ret_val = 0;
350         int i;
351         struct cht_mc_private *drv;
352         struct snd_soc_card *card = snd_soc_cards[0].soc_card;
353         char codec_name[16];
354 
355         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
356         if (!drv)
357                 return -ENOMEM;
358 
359         for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
360                 if (acpi_dev_found(snd_soc_cards[i].codec_id)) {
361                         dev_dbg(&pdev->dev,
362                                 "found codec %s\n", snd_soc_cards[i].codec_id);
363                         card = snd_soc_cards[i].soc_card;
364                         drv->acpi_card = &snd_soc_cards[i];
365                         break;
366                 }
367         }
368         card->dev = &pdev->dev;
369         sprintf(codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
370 
371         /* set correct codec name */
372         for (i = 0; i < ARRAY_SIZE(cht_dailink); i++)
373                 if (!strcmp(card->dai_link[i].codec_name, "i2c-10EC5645:00"))
374                         card->dai_link[i].codec_name = kstrdup(codec_name, GFP_KERNEL);
375 
376         snd_soc_card_set_drvdata(card, drv);
377         ret_val = devm_snd_soc_register_card(&pdev->dev, card);
378         if (ret_val) {
379                 dev_err(&pdev->dev,
380                         "snd_soc_register_card failed %d\n", ret_val);
381                 return ret_val;
382         }
383         platform_set_drvdata(pdev, card);
384         return ret_val;
385 }
386 
387 static struct platform_driver snd_cht_mc_driver = {
388         .driver = {
389                 .name = "cht-bsw-rt5645",
390         },
391         .probe = snd_cht_mc_probe,
392 };
393 
394 module_platform_driver(snd_cht_mc_driver)
395 
396 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
397 MODULE_AUTHOR("Fang, Yang A,N,Harshapriya");
398 MODULE_LICENSE("GPL v2");
399 MODULE_ALIAS("platform:cht-bsw-rt5645");
400 

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