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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 #include "../common/sst-acpi.h"
 34 
 35 #define CHT_PLAT_CLK_3_HZ       19200000
 36 #define CHT_CODEC_DAI   "rt5645-aif1"
 37 
 38 struct cht_acpi_card {
 39         char *codec_id;
 40         int codec_type;
 41         struct snd_soc_card *soc_card;
 42 };
 43 
 44 struct cht_mc_private {
 45         struct snd_soc_jack jack;
 46         struct cht_acpi_card *acpi_card;
 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_OFF(event))
 76                 return 0;
 77 
 78         /* Set codec sysclk source to its internal clock because codec PLL will
 79          * be off when idle and MCLK will also be off by ACPI when codec is
 80          * runtime suspended. Codec needs clock for jack detection and button
 81          * press.
 82          */
 83         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
 84                         0, 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 
 90         return 0;
 91 }
 92 
 93 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
 94         SND_SOC_DAPM_HP("Headphone", NULL),
 95         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 96         SND_SOC_DAPM_MIC("Int Mic", NULL),
 97         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 98         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 99                         platform_clock_control, SND_SOC_DAPM_POST_PMD),
100 };
101 
102 static const struct snd_soc_dapm_route cht_rt5645_audio_map[] = {
103         {"IN1P", NULL, "Headset Mic"},
104         {"IN1N", NULL, "Headset Mic"},
105         {"DMIC L1", NULL, "Int Mic"},
106         {"DMIC R1", NULL, "Int Mic"},
107         {"Headphone", NULL, "HPOL"},
108         {"Headphone", NULL, "HPOR"},
109         {"Ext Spk", NULL, "SPOL"},
110         {"Ext Spk", NULL, "SPOR"},
111         {"AIF1 Playback", NULL, "ssp2 Tx"},
112         {"ssp2 Tx", NULL, "codec_out0"},
113         {"ssp2 Tx", NULL, "codec_out1"},
114         {"codec_in0", NULL, "ssp2 Rx" },
115         {"codec_in1", NULL, "ssp2 Rx" },
116         {"ssp2 Rx", NULL, "AIF1 Capture"},
117         {"Headphone", NULL, "Platform Clock"},
118         {"Headset Mic", NULL, "Platform Clock"},
119         {"Int Mic", NULL, "Platform Clock"},
120         {"Ext Spk", NULL, "Platform Clock"},
121 };
122 
123 static const struct snd_soc_dapm_route cht_rt5650_audio_map[] = {
124         {"IN1P", NULL, "Headset Mic"},
125         {"IN1N", NULL, "Headset Mic"},
126         {"DMIC L2", NULL, "Int Mic"},
127         {"DMIC R2", NULL, "Int Mic"},
128         {"Headphone", NULL, "HPOL"},
129         {"Headphone", NULL, "HPOR"},
130         {"Ext Spk", NULL, "SPOL"},
131         {"Ext Spk", NULL, "SPOR"},
132         {"AIF1 Playback", NULL, "ssp2 Tx"},
133         {"ssp2 Tx", NULL, "codec_out0"},
134         {"ssp2 Tx", NULL, "codec_out1"},
135         {"codec_in0", NULL, "ssp2 Rx" },
136         {"codec_in1", NULL, "ssp2 Rx" },
137         {"ssp2 Rx", NULL, "AIF1 Capture"},
138         {"Headphone", NULL, "Platform Clock"},
139         {"Headset Mic", NULL, "Platform Clock"},
140         {"Int Mic", NULL, "Platform Clock"},
141         {"Ext Spk", NULL, "Platform Clock"},
142 };
143 
144 static const struct snd_kcontrol_new cht_mc_controls[] = {
145         SOC_DAPM_PIN_SWITCH("Headphone"),
146         SOC_DAPM_PIN_SWITCH("Headset Mic"),
147         SOC_DAPM_PIN_SWITCH("Int Mic"),
148         SOC_DAPM_PIN_SWITCH("Ext Spk"),
149 };
150 
151 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
152         {
153                 .pin    = "Headphone",
154                 .mask   = SND_JACK_HEADPHONE,
155         },
156         {
157                 .pin    = "Headset Mic",
158                 .mask   = SND_JACK_MICROPHONE,
159         },
160 };
161 
162 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
163                              struct snd_pcm_hw_params *params)
164 {
165         struct snd_soc_pcm_runtime *rtd = substream->private_data;
166         struct snd_soc_dai *codec_dai = rtd->codec_dai;
167         int ret;
168 
169         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
170         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
171                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
172         if (ret < 0) {
173                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
174                 return ret;
175         }
176 
177         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1,
178                                 params_rate(params) * 512, SND_SOC_CLOCK_IN);
179         if (ret < 0) {
180                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
181                 return ret;
182         }
183 
184         return 0;
185 }
186 
187 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
188 {
189         int ret;
190         int jack_type;
191         struct snd_soc_codec *codec = runtime->codec;
192         struct snd_soc_dai *codec_dai = runtime->codec_dai;
193         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
194 
195         /* Select clk_i2s1_asrc as ASRC clock source */
196         rt5645_sel_asrc_clk_src(codec,
197                                 RT5645_DA_STEREO_FILTER |
198                                 RT5645_DA_MONO_L_FILTER |
199                                 RT5645_DA_MONO_R_FILTER |
200                                 RT5645_AD_STEREO_FILTER,
201                                 RT5645_CLK_SEL_I2S1_ASRC);
202 
203         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
204         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
205         if (ret < 0) {
206                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
207                 return ret;
208         }
209 
210         if (ctx->acpi_card->codec_type == CODEC_TYPE_RT5650)
211                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
212                                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
213                                         SND_JACK_BTN_2 | SND_JACK_BTN_3;
214         else
215                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
216 
217         ret = snd_soc_card_jack_new(runtime->card, "Headset",
218                                     jack_type, &ctx->jack,
219                                     cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
220         if (ret) {
221                 dev_err(runtime->dev, "Headset jack creation failed %d\n", ret);
222                 return ret;
223         }
224 
225         rt5645_set_jack_detect(codec, &ctx->jack, &ctx->jack, &ctx->jack);
226 
227         return ret;
228 }
229 
230 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
231                             struct snd_pcm_hw_params *params)
232 {
233         struct snd_interval *rate = hw_param_interval(params,
234                         SNDRV_PCM_HW_PARAM_RATE);
235         struct snd_interval *channels = hw_param_interval(params,
236                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
237 
238         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
239         rate->min = rate->max = 48000;
240         channels->min = channels->max = 2;
241 
242         /* set SSP2 to 24-bit */
243         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
244         return 0;
245 }
246 
247 static int cht_aif1_startup(struct snd_pcm_substream *substream)
248 {
249         return snd_pcm_hw_constraint_single(substream->runtime,
250                         SNDRV_PCM_HW_PARAM_RATE, 48000);
251 }
252 
253 static struct snd_soc_ops cht_aif1_ops = {
254         .startup = cht_aif1_startup,
255 };
256 
257 static struct snd_soc_ops cht_be_ssp2_ops = {
258         .hw_params = cht_aif1_hw_params,
259 };
260 
261 static struct snd_soc_dai_link cht_dailink[] = {
262         [MERR_DPCM_AUDIO] = {
263                 .name = "Audio Port",
264                 .stream_name = "Audio",
265                 .cpu_dai_name = "media-cpu-dai",
266                 .codec_dai_name = "snd-soc-dummy-dai",
267                 .codec_name = "snd-soc-dummy",
268                 .platform_name = "sst-mfld-platform",
269                 .nonatomic = true,
270                 .dynamic = 1,
271                 .dpcm_playback = 1,
272                 .dpcm_capture = 1,
273                 .ops = &cht_aif1_ops,
274         },
275         [MERR_DPCM_DEEP_BUFFER] = {
276                 .name = "Deep-Buffer Audio Port",
277                 .stream_name = "Deep-Buffer Audio",
278                 .cpu_dai_name = "deepbuffer-cpu-dai",
279                 .codec_dai_name = "snd-soc-dummy-dai",
280                 .codec_name = "snd-soc-dummy",
281                 .platform_name = "sst-mfld-platform",
282                 .nonatomic = true,
283                 .dynamic = 1,
284                 .dpcm_playback = 1,
285                 .ops = &cht_aif1_ops,
286         },
287         [MERR_DPCM_COMPR] = {
288                 .name = "Compressed Port",
289                 .stream_name = "Compress",
290                 .cpu_dai_name = "compress-cpu-dai",
291                 .codec_dai_name = "snd-soc-dummy-dai",
292                 .codec_name = "snd-soc-dummy",
293                 .platform_name = "sst-mfld-platform",
294         },
295         /* CODEC<->CODEC link */
296         /* back ends */
297         {
298                 .name = "SSP2-Codec",
299                 .id = 1,
300                 .cpu_dai_name = "ssp2-port",
301                 .platform_name = "sst-mfld-platform",
302                 .no_pcm = 1,
303                 .codec_dai_name = "rt5645-aif1",
304                 .codec_name = "i2c-10EC5645:00",
305                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
306                                         | SND_SOC_DAIFMT_CBS_CFS,
307                 .init = cht_codec_init,
308                 .be_hw_params_fixup = cht_codec_fixup,
309                 .nonatomic = true,
310                 .dpcm_playback = 1,
311                 .dpcm_capture = 1,
312                 .ops = &cht_be_ssp2_ops,
313         },
314 };
315 
316 /* SoC card */
317 static struct snd_soc_card snd_soc_card_chtrt5645 = {
318         .name = "chtrt5645",
319         .owner = THIS_MODULE,
320         .dai_link = cht_dailink,
321         .num_links = ARRAY_SIZE(cht_dailink),
322         .dapm_widgets = cht_dapm_widgets,
323         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
324         .dapm_routes = cht_rt5645_audio_map,
325         .num_dapm_routes = ARRAY_SIZE(cht_rt5645_audio_map),
326         .controls = cht_mc_controls,
327         .num_controls = ARRAY_SIZE(cht_mc_controls),
328 };
329 
330 static struct snd_soc_card snd_soc_card_chtrt5650 = {
331         .name = "chtrt5650",
332         .owner = THIS_MODULE,
333         .dai_link = cht_dailink,
334         .num_links = ARRAY_SIZE(cht_dailink),
335         .dapm_widgets = cht_dapm_widgets,
336         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
337         .dapm_routes = cht_rt5650_audio_map,
338         .num_dapm_routes = ARRAY_SIZE(cht_rt5650_audio_map),
339         .controls = cht_mc_controls,
340         .num_controls = ARRAY_SIZE(cht_mc_controls),
341 };
342 
343 static struct cht_acpi_card snd_soc_cards[] = {
344         {"10EC5640", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
345         {"10EC5645", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
346         {"10EC5650", CODEC_TYPE_RT5650, &snd_soc_card_chtrt5650},
347 };
348 
349 static char cht_rt5640_codec_name[16]; /* i2c-<HID>:00 with HID being 8 chars */
350 
351 static int snd_cht_mc_probe(struct platform_device *pdev)
352 {
353         int ret_val = 0;
354         int i;
355         struct cht_mc_private *drv;
356         struct snd_soc_card *card = snd_soc_cards[0].soc_card;
357         char codec_name[16];
358         struct sst_acpi_mach *mach;
359         const char *i2c_name = NULL;
360         int dai_index = 0;
361 
362         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
363         if (!drv)
364                 return -ENOMEM;
365 
366         for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
367                 if (acpi_dev_found(snd_soc_cards[i].codec_id)) {
368                         dev_dbg(&pdev->dev,
369                                 "found codec %s\n", snd_soc_cards[i].codec_id);
370                         card = snd_soc_cards[i].soc_card;
371                         drv->acpi_card = &snd_soc_cards[i];
372                         break;
373                 }
374         }
375         card->dev = &pdev->dev;
376         mach = card->dev->platform_data;
377         sprintf(codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
378 
379         /* set correct codec name */
380         for (i = 0; i < ARRAY_SIZE(cht_dailink); i++)
381                 if (!strcmp(card->dai_link[i].codec_name, "i2c-10EC5645:00")) {
382                         card->dai_link[i].codec_name = kstrdup(codec_name, GFP_KERNEL);
383                         dai_index = i;
384                 }
385 
386         /* fixup codec name based on HID */
387         i2c_name = sst_acpi_find_name_from_hid(mach->id);
388         if (i2c_name != NULL) {
389                 snprintf(cht_rt5640_codec_name, sizeof(cht_rt5640_codec_name),
390                         "%s%s", "i2c-", i2c_name);
391                 cht_dailink[dai_index].codec_name = cht_rt5640_codec_name;
392         }
393 
394         snd_soc_card_set_drvdata(card, drv);
395         ret_val = devm_snd_soc_register_card(&pdev->dev, card);
396         if (ret_val) {
397                 dev_err(&pdev->dev,
398                         "snd_soc_register_card failed %d\n", ret_val);
399                 return ret_val;
400         }
401         platform_set_drvdata(pdev, card);
402         return ret_val;
403 }
404 
405 static struct platform_driver snd_cht_mc_driver = {
406         .driver = {
407                 .name = "cht-bsw-rt5645",
408         },
409         .probe = snd_cht_mc_probe,
410 };
411 
412 module_platform_driver(snd_cht_mc_driver)
413 
414 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
415 MODULE_AUTHOR("Fang, Yang A,N,Harshapriya");
416 MODULE_LICENSE("GPL v2");
417 MODULE_ALIAS("platform:cht-bsw-rt5645");
418 

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