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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         int i;
 51 
 52         for (i = 0; i < card->num_rtd; i++) {
 53                 struct snd_soc_pcm_runtime *rtd;
 54 
 55                 rtd = card->rtd + i;
 56                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
 57                              strlen(CHT_CODEC_DAI)))
 58                         return rtd->codec_dai;
 59         }
 60         return NULL;
 61 }
 62 
 63 static int platform_clock_control(struct snd_soc_dapm_widget *w,
 64                 struct snd_kcontrol *k, int  event)
 65 {
 66         struct snd_soc_dapm_context *dapm = w->dapm;
 67         struct snd_soc_card *card = dapm->card;
 68         struct snd_soc_dai *codec_dai;
 69         int ret;
 70 
 71         codec_dai = cht_get_codec_dai(card);
 72         if (!codec_dai) {
 73                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
 74                 return -EIO;
 75         }
 76 
 77         if (!SND_SOC_DAPM_EVENT_OFF(event))
 78                 return 0;
 79 
 80         /* Set codec sysclk source to its internal clock because codec PLL will
 81          * be off when idle and MCLK will also be off by ACPI when codec is
 82          * runtime suspended. Codec needs clock for jack detection and button
 83          * press.
 84          */
 85         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
 86                         0, 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 
 92         return 0;
 93 }
 94 
 95 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
 96         SND_SOC_DAPM_HP("Headphone", NULL),
 97         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 98         SND_SOC_DAPM_MIC("Int Mic", NULL),
 99         SND_SOC_DAPM_SPK("Ext Spk", NULL),
100         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
101                         platform_clock_control, SND_SOC_DAPM_POST_PMD),
102 };
103 
104 static const struct snd_soc_dapm_route cht_rt5645_audio_map[] = {
105         {"IN1P", NULL, "Headset Mic"},
106         {"IN1N", NULL, "Headset Mic"},
107         {"DMIC L1", NULL, "Int Mic"},
108         {"DMIC R1", NULL, "Int Mic"},
109         {"Headphone", NULL, "HPOL"},
110         {"Headphone", NULL, "HPOR"},
111         {"Ext Spk", NULL, "SPOL"},
112         {"Ext Spk", NULL, "SPOR"},
113         {"AIF1 Playback", NULL, "ssp2 Tx"},
114         {"ssp2 Tx", NULL, "codec_out0"},
115         {"ssp2 Tx", NULL, "codec_out1"},
116         {"codec_in0", NULL, "ssp2 Rx" },
117         {"codec_in1", NULL, "ssp2 Rx" },
118         {"ssp2 Rx", NULL, "AIF1 Capture"},
119         {"Headphone", NULL, "Platform Clock"},
120         {"Headset Mic", NULL, "Platform Clock"},
121         {"Int Mic", NULL, "Platform Clock"},
122         {"Ext Spk", NULL, "Platform Clock"},
123 };
124 
125 static const struct snd_soc_dapm_route cht_rt5650_audio_map[] = {
126         {"IN1P", NULL, "Headset Mic"},
127         {"IN1N", NULL, "Headset Mic"},
128         {"DMIC L2", NULL, "Int Mic"},
129         {"DMIC R2", NULL, "Int Mic"},
130         {"Headphone", NULL, "HPOL"},
131         {"Headphone", NULL, "HPOR"},
132         {"Ext Spk", NULL, "SPOL"},
133         {"Ext Spk", NULL, "SPOR"},
134         {"AIF1 Playback", NULL, "ssp2 Tx"},
135         {"ssp2 Tx", NULL, "codec_out0"},
136         {"ssp2 Tx", NULL, "codec_out1"},
137         {"codec_in0", NULL, "ssp2 Rx" },
138         {"codec_in1", NULL, "ssp2 Rx" },
139         {"ssp2 Rx", NULL, "AIF1 Capture"},
140         {"Headphone", NULL, "Platform Clock"},
141         {"Headset Mic", NULL, "Platform Clock"},
142         {"Int Mic", NULL, "Platform Clock"},
143         {"Ext Spk", NULL, "Platform Clock"},
144 };
145 
146 static const struct snd_kcontrol_new cht_mc_controls[] = {
147         SOC_DAPM_PIN_SWITCH("Headphone"),
148         SOC_DAPM_PIN_SWITCH("Headset Mic"),
149         SOC_DAPM_PIN_SWITCH("Int Mic"),
150         SOC_DAPM_PIN_SWITCH("Ext Spk"),
151 };
152 
153 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
154                              struct snd_pcm_hw_params *params)
155 {
156         struct snd_soc_pcm_runtime *rtd = substream->private_data;
157         struct snd_soc_dai *codec_dai = rtd->codec_dai;
158         int ret;
159 
160         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
161         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
162                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
163         if (ret < 0) {
164                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
165                 return ret;
166         }
167 
168         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1,
169                                 params_rate(params) * 512, SND_SOC_CLOCK_IN);
170         if (ret < 0) {
171                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
172                 return ret;
173         }
174 
175         return 0;
176 }
177 
178 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
179 {
180         int ret;
181         int jack_type;
182         struct snd_soc_codec *codec = runtime->codec;
183         struct snd_soc_dai *codec_dai = runtime->codec_dai;
184         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
185 
186         /* Select clk_i2s1_asrc as ASRC clock source */
187         rt5645_sel_asrc_clk_src(codec,
188                                 RT5645_DA_STEREO_FILTER |
189                                 RT5645_DA_MONO_L_FILTER |
190                                 RT5645_DA_MONO_R_FILTER |
191                                 RT5645_AD_STEREO_FILTER,
192                                 RT5645_CLK_SEL_I2S1_ASRC);
193 
194         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
195         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
196         if (ret < 0) {
197                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
198                 return ret;
199         }
200 
201         if (ctx->acpi_card->codec_type == CODEC_TYPE_RT5650)
202                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
203                                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
204                                         SND_JACK_BTN_2 | SND_JACK_BTN_3;
205         else
206                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
207 
208         ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
209                                     jack_type, &ctx->jack,
210                                     NULL, 0);
211         if (ret) {
212                 dev_err(runtime->dev, "Headset jack creation failed %d\n", ret);
213                 return ret;
214         }
215 
216         rt5645_set_jack_detect(codec, &ctx->jack, &ctx->jack, &ctx->jack);
217 
218         return ret;
219 }
220 
221 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
222                             struct snd_pcm_hw_params *params)
223 {
224         struct snd_interval *rate = hw_param_interval(params,
225                         SNDRV_PCM_HW_PARAM_RATE);
226         struct snd_interval *channels = hw_param_interval(params,
227                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
228 
229         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
230         rate->min = rate->max = 48000;
231         channels->min = channels->max = 2;
232 
233         /* set SSP2 to 24-bit */
234         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
235         return 0;
236 }
237 
238 static unsigned int rates_48000[] = {
239         48000,
240 };
241 
242 static struct snd_pcm_hw_constraint_list constraints_48000 = {
243         .count = ARRAY_SIZE(rates_48000),
244         .list  = rates_48000,
245 };
246 
247 static int cht_aif1_startup(struct snd_pcm_substream *substream)
248 {
249         return snd_pcm_hw_constraint_list(substream->runtime, 0,
250                         SNDRV_PCM_HW_PARAM_RATE,
251                         &constraints_48000);
252 }
253 
254 static struct snd_soc_ops cht_aif1_ops = {
255         .startup = cht_aif1_startup,
256 };
257 
258 static struct snd_soc_ops cht_be_ssp2_ops = {
259         .hw_params = cht_aif1_hw_params,
260 };
261 
262 static struct snd_soc_dai_link cht_dailink[] = {
263         [MERR_DPCM_AUDIO] = {
264                 .name = "Audio Port",
265                 .stream_name = "Audio",
266                 .cpu_dai_name = "media-cpu-dai",
267                 .codec_dai_name = "snd-soc-dummy-dai",
268                 .codec_name = "snd-soc-dummy",
269                 .platform_name = "sst-mfld-platform",
270                 .nonatomic = true,
271                 .dynamic = 1,
272                 .dpcm_playback = 1,
273                 .dpcm_capture = 1,
274                 .ops = &cht_aif1_ops,
275         },
276         [MERR_DPCM_COMPR] = {
277                 .name = "Compressed Port",
278                 .stream_name = "Compress",
279                 .cpu_dai_name = "compress-cpu-dai",
280                 .codec_dai_name = "snd-soc-dummy-dai",
281                 .codec_name = "snd-soc-dummy",
282                 .platform_name = "sst-mfld-platform",
283         },
284         /* CODEC<->CODEC link */
285         /* back ends */
286         {
287                 .name = "SSP2-Codec",
288                 .be_id = 1,
289                 .cpu_dai_name = "ssp2-port",
290                 .platform_name = "sst-mfld-platform",
291                 .no_pcm = 1,
292                 .codec_dai_name = "rt5645-aif1",
293                 .codec_name = "i2c-10EC5645:00",
294                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
295                                         | SND_SOC_DAIFMT_CBS_CFS,
296                 .init = cht_codec_init,
297                 .be_hw_params_fixup = cht_codec_fixup,
298                 .nonatomic = true,
299                 .dpcm_playback = 1,
300                 .dpcm_capture = 1,
301                 .ops = &cht_be_ssp2_ops,
302         },
303 };
304 
305 /* SoC card */
306 static struct snd_soc_card snd_soc_card_chtrt5645 = {
307         .name = "chtrt5645",
308         .owner = THIS_MODULE,
309         .dai_link = cht_dailink,
310         .num_links = ARRAY_SIZE(cht_dailink),
311         .dapm_widgets = cht_dapm_widgets,
312         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
313         .dapm_routes = cht_rt5645_audio_map,
314         .num_dapm_routes = ARRAY_SIZE(cht_rt5645_audio_map),
315         .controls = cht_mc_controls,
316         .num_controls = ARRAY_SIZE(cht_mc_controls),
317 };
318 
319 static struct snd_soc_card snd_soc_card_chtrt5650 = {
320         .name = "chtrt5650",
321         .owner = THIS_MODULE,
322         .dai_link = cht_dailink,
323         .num_links = ARRAY_SIZE(cht_dailink),
324         .dapm_widgets = cht_dapm_widgets,
325         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
326         .dapm_routes = cht_rt5650_audio_map,
327         .num_dapm_routes = ARRAY_SIZE(cht_rt5650_audio_map),
328         .controls = cht_mc_controls,
329         .num_controls = ARRAY_SIZE(cht_mc_controls),
330 };
331 
332 static struct cht_acpi_card snd_soc_cards[] = {
333         {"10EC5645", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
334         {"10EC5650", CODEC_TYPE_RT5650, &snd_soc_card_chtrt5650},
335 };
336 
337 static acpi_status snd_acpi_codec_match(acpi_handle handle, u32 level,
338                                        void *context, void **ret)
339 {
340         *(bool *)context = true;
341         return AE_OK;
342 }
343 
344 static int snd_cht_mc_probe(struct platform_device *pdev)
345 {
346         int ret_val = 0;
347         int i;
348         struct cht_mc_private *drv;
349         struct snd_soc_card *card = snd_soc_cards[0].soc_card;
350         bool found = false;
351         char codec_name[16];
352 
353         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
354         if (!drv)
355                 return -ENOMEM;
356 
357         for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
358                 if (ACPI_SUCCESS(acpi_get_devices(
359                                                 snd_soc_cards[i].codec_id,
360                                                 snd_acpi_codec_match,
361                                                 &found, NULL)) && found) {
362                         dev_dbg(&pdev->dev,
363                                 "found codec %s\n", snd_soc_cards[i].codec_id);
364                         card = snd_soc_cards[i].soc_card;
365                         drv->acpi_card = &snd_soc_cards[i];
366                         break;
367                 }
368         }
369         card->dev = &pdev->dev;
370         sprintf(codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
371         /* set correct codec name */
372         strcpy((char *)card->dai_link[2].codec_name, codec_name);
373         snd_soc_card_set_drvdata(card, drv);
374         ret_val = devm_snd_soc_register_card(&pdev->dev, card);
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, card);
381         return ret_val;
382 }
383 
384 static struct platform_driver snd_cht_mc_driver = {
385         .driver = {
386                 .name = "cht-bsw-rt5645",
387         },
388         .probe = snd_cht_mc_probe,
389 };
390 
391 module_platform_driver(snd_cht_mc_driver)
392 
393 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
394 MODULE_AUTHOR("Fang, Yang A,N,Harshapriya");
395 MODULE_LICENSE("GPL v2");
396 MODULE_ALIAS("platform:cht-bsw-rt5645");
397 

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