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TOMOYO Linux Cross Reference
Linux/sound/soc/intel/boards/bytcr_rt5651.c

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  1 /*
  2  *  bytcr_rt5651.c - ASoc Machine driver for Intel Byt CR platform
  3  *  (derived from bytcr_rt5640.c)
  4  *
  5  *  Copyright (C) 2015 Intel Corp
  6  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  7  *
  8  *  This program is free software; you can redistribute it and/or modify
  9  *  it under the terms of the GNU General Public License as published by
 10  *  the Free Software Foundation; version 2 of the License.
 11  *
 12  *  This program is distributed in the hope that it will be useful, but
 13  *  WITHOUT ANY WARRANTY; without even the implied warranty of
 14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 15  *  General Public License for more details.
 16  *
 17  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 18  */
 19 
 20 #include <linux/init.h>
 21 #include <linux/i2c.h>
 22 #include <linux/module.h>
 23 #include <linux/platform_device.h>
 24 #include <linux/property.h>
 25 #include <linux/acpi.h>
 26 #include <linux/clk.h>
 27 #include <linux/device.h>
 28 #include <linux/dmi.h>
 29 #include <linux/input.h>
 30 #include <linux/gpio/consumer.h>
 31 #include <linux/gpio/machine.h>
 32 #include <linux/slab.h>
 33 #include <asm/cpu_device_id.h>
 34 #include <asm/intel-family.h>
 35 #include <sound/pcm.h>
 36 #include <sound/pcm_params.h>
 37 #include <sound/soc.h>
 38 #include <sound/jack.h>
 39 #include <sound/soc-acpi.h>
 40 #include "../../codecs/rt5651.h"
 41 #include "../atom/sst-atom-controls.h"
 42 
 43 enum {
 44         BYT_RT5651_DMIC_MAP,
 45         BYT_RT5651_IN1_MAP,
 46         BYT_RT5651_IN2_MAP,
 47         BYT_RT5651_IN1_IN2_MAP,
 48 };
 49 
 50 enum {
 51         BYT_RT5651_JD_NULL      = (RT5651_JD_NULL << 4),
 52         BYT_RT5651_JD1_1        = (RT5651_JD1_1 << 4),
 53         BYT_RT5651_JD1_2        = (RT5651_JD1_2 << 4),
 54         BYT_RT5651_JD2          = (RT5651_JD2 << 4),
 55 };
 56 
 57 enum {
 58         BYT_RT5651_OVCD_TH_600UA  = (6 << 8),
 59         BYT_RT5651_OVCD_TH_1500UA = (15 << 8),
 60         BYT_RT5651_OVCD_TH_2000UA = (20 << 8),
 61 };
 62 
 63 enum {
 64         BYT_RT5651_OVCD_SF_0P5  = (RT5651_OVCD_SF_0P5 << 13),
 65         BYT_RT5651_OVCD_SF_0P75 = (RT5651_OVCD_SF_0P75 << 13),
 66         BYT_RT5651_OVCD_SF_1P0  = (RT5651_OVCD_SF_1P0 << 13),
 67         BYT_RT5651_OVCD_SF_1P5  = (RT5651_OVCD_SF_1P5 << 13),
 68 };
 69 
 70 #define BYT_RT5651_MAP(quirk)           ((quirk) & GENMASK(3, 0))
 71 #define BYT_RT5651_JDSRC(quirk)         (((quirk) & GENMASK(7, 4)) >> 4)
 72 #define BYT_RT5651_OVCD_TH(quirk)       (((quirk) & GENMASK(12, 8)) >> 8)
 73 #define BYT_RT5651_OVCD_SF(quirk)       (((quirk) & GENMASK(14, 13)) >> 13)
 74 #define BYT_RT5651_DMIC_EN              BIT(16)
 75 #define BYT_RT5651_MCLK_EN              BIT(17)
 76 #define BYT_RT5651_MCLK_25MHZ           BIT(18)
 77 #define BYT_RT5651_SSP2_AIF2            BIT(19) /* default is using AIF1  */
 78 #define BYT_RT5651_SSP0_AIF1            BIT(20)
 79 #define BYT_RT5651_SSP0_AIF2            BIT(21)
 80 #define BYT_RT5651_HP_LR_SWAPPED        BIT(22)
 81 #define BYT_RT5651_MONO_SPEAKER         BIT(23)
 82 
 83 #define BYT_RT5651_DEFAULT_QUIRKS       (BYT_RT5651_MCLK_EN | \
 84                                          BYT_RT5651_JD1_1   | \
 85                                          BYT_RT5651_OVCD_TH_2000UA | \
 86                                          BYT_RT5651_OVCD_SF_0P75)
 87 
 88 /* jack-detect-source + dmic-en + ovcd-th + -sf + terminating empty entry */
 89 #define MAX_NO_PROPS 5
 90 
 91 struct byt_rt5651_private {
 92         struct clk *mclk;
 93         struct gpio_desc *ext_amp_gpio;
 94         struct snd_soc_jack jack;
 95 };
 96 
 97 /* Default: jack-detect on JD1_1, internal mic on in2, headsetmic on in3 */
 98 static unsigned long byt_rt5651_quirk = BYT_RT5651_DEFAULT_QUIRKS |
 99                                         BYT_RT5651_IN2_MAP;
100 
101 static void log_quirks(struct device *dev)
102 {
103         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_DMIC_MAP)
104                 dev_info(dev, "quirk DMIC_MAP enabled");
105         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN1_MAP)
106                 dev_info(dev, "quirk IN1_MAP enabled");
107         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN2_MAP)
108                 dev_info(dev, "quirk IN2_MAP enabled");
109         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN1_IN2_MAP)
110                 dev_info(dev, "quirk IN1_IN2_MAP enabled");
111         if (BYT_RT5651_JDSRC(byt_rt5651_quirk)) {
112                 dev_info(dev, "quirk realtek,jack-detect-source %ld\n",
113                          BYT_RT5651_JDSRC(byt_rt5651_quirk));
114                 dev_info(dev, "quirk realtek,over-current-threshold-microamp %ld\n",
115                          BYT_RT5651_OVCD_TH(byt_rt5651_quirk) * 100);
116                 dev_info(dev, "quirk realtek,over-current-scale-factor %ld\n",
117                          BYT_RT5651_OVCD_SF(byt_rt5651_quirk));
118         }
119         if (byt_rt5651_quirk & BYT_RT5651_DMIC_EN)
120                 dev_info(dev, "quirk DMIC enabled");
121         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
122                 dev_info(dev, "quirk MCLK_EN enabled");
123         if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
124                 dev_info(dev, "quirk MCLK_25MHZ enabled");
125         if (byt_rt5651_quirk & BYT_RT5651_SSP2_AIF2)
126                 dev_info(dev, "quirk SSP2_AIF2 enabled\n");
127         if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1)
128                 dev_info(dev, "quirk SSP0_AIF1 enabled\n");
129         if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)
130                 dev_info(dev, "quirk SSP0_AIF2 enabled\n");
131         if (byt_rt5651_quirk & BYT_RT5651_MONO_SPEAKER)
132                 dev_info(dev, "quirk MONO_SPEAKER enabled\n");
133 }
134 
135 #define BYT_CODEC_DAI1  "rt5651-aif1"
136 #define BYT_CODEC_DAI2  "rt5651-aif2"
137 
138 static int byt_rt5651_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai,
139                                               int rate, int bclk_ratio)
140 {
141         int clk_id, clk_freq, ret;
142 
143         /* Configure the PLL before selecting it */
144         if (!(byt_rt5651_quirk & BYT_RT5651_MCLK_EN)) {
145                 clk_id = RT5651_PLL1_S_BCLK1,
146                 clk_freq = rate * bclk_ratio;
147         } else {
148                 clk_id = RT5651_PLL1_S_MCLK;
149                 if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
150                         clk_freq = 25000000;
151                 else
152                         clk_freq = 19200000;
153         }
154         ret = snd_soc_dai_set_pll(codec_dai, 0, clk_id, clk_freq, rate * 512);
155         if (ret < 0) {
156                 dev_err(codec_dai->component->dev, "can't set pll: %d\n", ret);
157                 return ret;
158         }
159 
160         ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_PLL1,
161                                      rate * 512, SND_SOC_CLOCK_IN);
162         if (ret < 0) {
163                 dev_err(codec_dai->component->dev, "can't set clock %d\n", ret);
164                 return ret;
165         }
166 
167         return 0;
168 }
169 
170 static int platform_clock_control(struct snd_soc_dapm_widget *w,
171                                   struct snd_kcontrol *k, int  event)
172 {
173         struct snd_soc_dapm_context *dapm = w->dapm;
174         struct snd_soc_card *card = dapm->card;
175         struct snd_soc_dai *codec_dai;
176         struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
177         int ret;
178 
179         codec_dai = snd_soc_card_get_codec_dai(card, BYT_CODEC_DAI1);
180         if (!codec_dai)
181                 codec_dai = snd_soc_card_get_codec_dai(card, BYT_CODEC_DAI2);
182         if (!codec_dai) {
183                 dev_err(card->dev,
184                         "Codec dai not found; Unable to set platform clock\n");
185                 return -EIO;
186         }
187 
188         if (SND_SOC_DAPM_EVENT_ON(event)) {
189                 if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
190                         ret = clk_prepare_enable(priv->mclk);
191                         if (ret < 0) {
192                                 dev_err(card->dev,
193                                         "could not configure MCLK state");
194                                 return ret;
195                         }
196                 }
197                 ret = byt_rt5651_prepare_and_enable_pll1(codec_dai, 48000, 50);
198         } else {
199                 /*
200                  * Set codec clock source to internal clock before
201                  * turning off the platform clock. Codec needs clock
202                  * for Jack detection and button press
203                  */
204                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_RCCLK,
205                                              48000 * 512,
206                                              SND_SOC_CLOCK_IN);
207                 if (!ret)
208                         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
209                                 clk_disable_unprepare(priv->mclk);
210         }
211 
212         if (ret < 0) {
213                 dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
214                 return ret;
215         }
216 
217         return 0;
218 }
219 
220 static int rt5651_ext_amp_power_event(struct snd_soc_dapm_widget *w,
221         struct snd_kcontrol *kcontrol, int event)
222 {
223         struct snd_soc_card *card = w->dapm->card;
224         struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
225 
226         if (SND_SOC_DAPM_EVENT_ON(event))
227                 gpiod_set_value_cansleep(priv->ext_amp_gpio, 1);
228         else
229                 gpiod_set_value_cansleep(priv->ext_amp_gpio, 0);
230 
231         return 0;
232 }
233 
234 static const struct snd_soc_dapm_widget byt_rt5651_widgets[] = {
235         SND_SOC_DAPM_HP("Headphone", NULL),
236         SND_SOC_DAPM_MIC("Headset Mic", NULL),
237         SND_SOC_DAPM_MIC("Internal Mic", NULL),
238         SND_SOC_DAPM_SPK("Speaker", NULL),
239         SND_SOC_DAPM_LINE("Line In", NULL),
240         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
241                             platform_clock_control, SND_SOC_DAPM_PRE_PMU |
242                             SND_SOC_DAPM_POST_PMD),
243         SND_SOC_DAPM_SUPPLY("Ext Amp Power", SND_SOC_NOPM, 0, 0,
244                             rt5651_ext_amp_power_event,
245                             SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
246 };
247 
248 static const struct snd_soc_dapm_route byt_rt5651_audio_map[] = {
249         {"Headphone", NULL, "Platform Clock"},
250         {"Headset Mic", NULL, "Platform Clock"},
251         {"Internal Mic", NULL, "Platform Clock"},
252         {"Speaker", NULL, "Platform Clock"},
253         {"Speaker", NULL, "Ext Amp Power"},
254         {"Line In", NULL, "Platform Clock"},
255 
256         {"Headset Mic", NULL, "micbias1"}, /* lowercase for rt5651 */
257         {"Headphone", NULL, "HPOL"},
258         {"Headphone", NULL, "HPOR"},
259         {"Speaker", NULL, "LOUTL"},
260         {"Speaker", NULL, "LOUTR"},
261         {"IN2P", NULL, "Line In"},
262         {"IN2N", NULL, "Line In"},
263 
264 };
265 
266 static const struct snd_soc_dapm_route byt_rt5651_intmic_dmic_map[] = {
267         {"DMIC L1", NULL, "Internal Mic"},
268         {"DMIC R1", NULL, "Internal Mic"},
269         {"IN2P", NULL, "Headset Mic"},
270 };
271 
272 static const struct snd_soc_dapm_route byt_rt5651_intmic_in1_map[] = {
273         {"Internal Mic", NULL, "micbias1"},
274         {"IN1P", NULL, "Internal Mic"},
275         {"IN3P", NULL, "Headset Mic"},
276 };
277 
278 static const struct snd_soc_dapm_route byt_rt5651_intmic_in2_map[] = {
279         {"Internal Mic", NULL, "micbias1"},
280         {"IN2P", NULL, "Internal Mic"},
281         {"IN3P", NULL, "Headset Mic"},
282 };
283 
284 static const struct snd_soc_dapm_route byt_rt5651_intmic_in1_in2_map[] = {
285         {"Internal Mic", NULL, "micbias1"},
286         {"IN1P", NULL, "Internal Mic"},
287         {"IN2P", NULL, "Internal Mic"},
288         {"IN3P", NULL, "Headset Mic"},
289 };
290 
291 static const struct snd_soc_dapm_route byt_rt5651_ssp0_aif1_map[] = {
292         {"ssp0 Tx", NULL, "modem_out"},
293         {"modem_in", NULL, "ssp0 Rx"},
294 
295         {"AIF1 Playback", NULL, "ssp0 Tx"},
296         {"ssp0 Rx", NULL, "AIF1 Capture"},
297 };
298 
299 static const struct snd_soc_dapm_route byt_rt5651_ssp0_aif2_map[] = {
300         {"ssp0 Tx", NULL, "modem_out"},
301         {"modem_in", NULL, "ssp0 Rx"},
302 
303         {"AIF2 Playback", NULL, "ssp0 Tx"},
304         {"ssp0 Rx", NULL, "AIF2 Capture"},
305 };
306 
307 static const struct snd_soc_dapm_route byt_rt5651_ssp2_aif1_map[] = {
308         {"ssp2 Tx", NULL, "codec_out0"},
309         {"ssp2 Tx", NULL, "codec_out1"},
310         {"codec_in0", NULL, "ssp2 Rx"},
311         {"codec_in1", NULL, "ssp2 Rx"},
312 
313         {"AIF1 Playback", NULL, "ssp2 Tx"},
314         {"ssp2 Rx", NULL, "AIF1 Capture"},
315 };
316 
317 static const struct snd_soc_dapm_route byt_rt5651_ssp2_aif2_map[] = {
318         {"ssp2 Tx", NULL, "codec_out0"},
319         {"ssp2 Tx", NULL, "codec_out1"},
320         {"codec_in0", NULL, "ssp2 Rx"},
321         {"codec_in1", NULL, "ssp2 Rx"},
322 
323         {"AIF2 Playback", NULL, "ssp2 Tx"},
324         {"ssp2 Rx", NULL, "AIF2 Capture"},
325 };
326 
327 static const struct snd_kcontrol_new byt_rt5651_controls[] = {
328         SOC_DAPM_PIN_SWITCH("Headphone"),
329         SOC_DAPM_PIN_SWITCH("Headset Mic"),
330         SOC_DAPM_PIN_SWITCH("Internal Mic"),
331         SOC_DAPM_PIN_SWITCH("Speaker"),
332         SOC_DAPM_PIN_SWITCH("Line In"),
333 };
334 
335 static struct snd_soc_jack_pin bytcr_jack_pins[] = {
336         {
337                 .pin    = "Headphone",
338                 .mask   = SND_JACK_HEADPHONE,
339         },
340         {
341                 .pin    = "Headset Mic",
342                 .mask   = SND_JACK_MICROPHONE,
343         },
344 };
345 
346 static int byt_rt5651_aif1_hw_params(struct snd_pcm_substream *substream,
347                                         struct snd_pcm_hw_params *params)
348 {
349         struct snd_soc_pcm_runtime *rtd = substream->private_data;
350         struct snd_soc_dai *codec_dai = rtd->codec_dai;
351         snd_pcm_format_t format = params_format(params);
352         int rate = params_rate(params);
353         int bclk_ratio;
354 
355         if (format == SNDRV_PCM_FORMAT_S16_LE)
356                 bclk_ratio = 32;
357         else
358                 bclk_ratio = 50;
359 
360         return byt_rt5651_prepare_and_enable_pll1(codec_dai, rate, bclk_ratio);
361 }
362 
363 static int byt_rt5651_quirk_cb(const struct dmi_system_id *id)
364 {
365         byt_rt5651_quirk = (unsigned long)id->driver_data;
366         return 1;
367 }
368 
369 static const struct dmi_system_id byt_rt5651_quirk_table[] = {
370         {
371                 /* Chuwi Hi8 Pro (CWI513) */
372                 .callback = byt_rt5651_quirk_cb,
373                 .matches = {
374                         DMI_MATCH(DMI_SYS_VENDOR, "Hampoo"),
375                         DMI_MATCH(DMI_PRODUCT_NAME, "X1D3_C806N"),
376                 },
377                 .driver_data = (void *)(BYT_RT5651_DEFAULT_QUIRKS |
378                                         BYT_RT5651_IN2_MAP |
379                                         BYT_RT5651_HP_LR_SWAPPED |
380                                         BYT_RT5651_MONO_SPEAKER),
381         },
382         {
383                 /* Chuwi Vi8 Plus (CWI519) */
384                 .callback = byt_rt5651_quirk_cb,
385                 .matches = {
386                         DMI_MATCH(DMI_SYS_VENDOR, "Hampoo"),
387                         DMI_MATCH(DMI_PRODUCT_NAME, "D2D3_Vi8A1"),
388                 },
389                 .driver_data = (void *)(BYT_RT5651_DEFAULT_QUIRKS |
390                                         BYT_RT5651_IN2_MAP |
391                                         BYT_RT5651_HP_LR_SWAPPED |
392                                         BYT_RT5651_MONO_SPEAKER),
393         },
394         {
395                 /* I.T.Works TW701, Ployer Momo7w and Trekstor ST70416-6
396                  * (these all use the same mainboard) */
397                 .callback = byt_rt5651_quirk_cb,
398                 .matches = {
399                         DMI_MATCH(DMI_BIOS_VENDOR, "INSYDE Corp."),
400                         /* Partial match for all of itWORKS.G.WI71C.JGBMRBA,
401                          * TREK.G.WI71C.JGBMRBA0x and MOMO.G.WI71C.MABMRBA02 */
402                         DMI_MATCH(DMI_BIOS_VERSION, ".G.WI71C."),
403                 },
404                 .driver_data = (void *)(BYT_RT5651_DEFAULT_QUIRKS |
405                                         BYT_RT5651_IN2_MAP |
406                                         BYT_RT5651_SSP0_AIF1 |
407                                         BYT_RT5651_MONO_SPEAKER),
408         },
409         {
410                 /* KIANO SlimNote 14.2 */
411                 .callback = byt_rt5651_quirk_cb,
412                 .matches = {
413                         DMI_MATCH(DMI_SYS_VENDOR, "KIANO"),
414                         DMI_MATCH(DMI_PRODUCT_NAME, "KIANO SlimNote 14.2"),
415                 },
416                 .driver_data = (void *)(BYT_RT5651_DEFAULT_QUIRKS |
417                                         BYT_RT5651_IN1_IN2_MAP),
418         },
419         {
420                 /* Minnowboard Max B3 */
421                 .callback = byt_rt5651_quirk_cb,
422                 .matches = {
423                         DMI_MATCH(DMI_SYS_VENDOR, "Circuitco"),
424                         DMI_MATCH(DMI_PRODUCT_NAME, "Minnowboard Max B3 PLATFORM"),
425                 },
426                 .driver_data = (void *)(BYT_RT5651_IN1_MAP),
427         },
428         {
429                 /* Minnowboard Turbot */
430                 .callback = byt_rt5651_quirk_cb,
431                 .matches = {
432                         DMI_MATCH(DMI_SYS_VENDOR, "ADI"),
433                         DMI_MATCH(DMI_PRODUCT_NAME, "Minnowboard Turbot"),
434                 },
435                 .driver_data = (void *)(BYT_RT5651_MCLK_EN |
436                                         BYT_RT5651_IN1_MAP),
437         },
438         {
439                 /* VIOS LTH17 */
440                 .callback = byt_rt5651_quirk_cb,
441                 .matches = {
442                         DMI_MATCH(DMI_SYS_VENDOR, "VIOS"),
443                         DMI_MATCH(DMI_PRODUCT_NAME, "LTH17"),
444                 },
445                 .driver_data = (void *)(BYT_RT5651_IN1_IN2_MAP |
446                                         BYT_RT5651_JD1_1 |
447                                         BYT_RT5651_OVCD_TH_2000UA |
448                                         BYT_RT5651_OVCD_SF_1P0 |
449                                         BYT_RT5651_MCLK_EN),
450         },
451         {
452                 /* Yours Y8W81 (and others using the same mainboard) */
453                 .callback = byt_rt5651_quirk_cb,
454                 .matches = {
455                         DMI_MATCH(DMI_BIOS_VENDOR, "INSYDE Corp."),
456                         /* Partial match for all devs with a W86C mainboard */
457                         DMI_MATCH(DMI_BIOS_VERSION, ".F.W86C."),
458                 },
459                 .driver_data = (void *)(BYT_RT5651_DEFAULT_QUIRKS |
460                                         BYT_RT5651_IN2_MAP |
461                                         BYT_RT5651_SSP0_AIF1 |
462                                         BYT_RT5651_MONO_SPEAKER),
463         },
464         {}
465 };
466 
467 /*
468  * Note this MUST be called before snd_soc_register_card(), so that the props
469  * are in place before the codec component driver's probe function parses them.
470  */
471 static int byt_rt5651_add_codec_device_props(struct device *i2c_dev)
472 {
473         struct property_entry props[MAX_NO_PROPS] = {};
474         int cnt = 0;
475 
476         props[cnt++] = PROPERTY_ENTRY_U32("realtek,jack-detect-source",
477                                 BYT_RT5651_JDSRC(byt_rt5651_quirk));
478 
479         props[cnt++] = PROPERTY_ENTRY_U32("realtek,over-current-threshold-microamp",
480                                 BYT_RT5651_OVCD_TH(byt_rt5651_quirk) * 100);
481 
482         props[cnt++] = PROPERTY_ENTRY_U32("realtek,over-current-scale-factor",
483                                 BYT_RT5651_OVCD_SF(byt_rt5651_quirk));
484 
485         if (byt_rt5651_quirk & BYT_RT5651_DMIC_EN)
486                 props[cnt++] = PROPERTY_ENTRY_BOOL("realtek,dmic-en");
487 
488         return device_add_properties(i2c_dev, props);
489 }
490 
491 static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
492 {
493         struct snd_soc_card *card = runtime->card;
494         struct snd_soc_component *codec = runtime->codec_dai->component;
495         struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
496         const struct snd_soc_dapm_route *custom_map;
497         int num_routes;
498         int ret;
499 
500         card->dapm.idle_bias_off = true;
501 
502         /* Start with RC clk for jack-detect (we disable MCLK below) */
503         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
504                 snd_soc_component_update_bits(codec, RT5651_GLB_CLK,
505                         RT5651_SCLK_SRC_MASK, RT5651_SCLK_SRC_RCCLK);
506 
507         switch (BYT_RT5651_MAP(byt_rt5651_quirk)) {
508         case BYT_RT5651_IN1_MAP:
509                 custom_map = byt_rt5651_intmic_in1_map;
510                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in1_map);
511                 break;
512         case BYT_RT5651_IN2_MAP:
513                 custom_map = byt_rt5651_intmic_in2_map;
514                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in2_map);
515                 break;
516         case BYT_RT5651_IN1_IN2_MAP:
517                 custom_map = byt_rt5651_intmic_in1_in2_map;
518                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in1_in2_map);
519                 break;
520         default:
521                 custom_map = byt_rt5651_intmic_dmic_map;
522                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_dmic_map);
523         }
524         ret = snd_soc_dapm_add_routes(&card->dapm, custom_map, num_routes);
525         if (ret)
526                 return ret;
527 
528         if (byt_rt5651_quirk & BYT_RT5651_SSP2_AIF2) {
529                 ret = snd_soc_dapm_add_routes(&card->dapm,
530                                         byt_rt5651_ssp2_aif2_map,
531                                         ARRAY_SIZE(byt_rt5651_ssp2_aif2_map));
532         } else if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1) {
533                 ret = snd_soc_dapm_add_routes(&card->dapm,
534                                         byt_rt5651_ssp0_aif1_map,
535                                         ARRAY_SIZE(byt_rt5651_ssp0_aif1_map));
536         } else if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2) {
537                 ret = snd_soc_dapm_add_routes(&card->dapm,
538                                         byt_rt5651_ssp0_aif2_map,
539                                         ARRAY_SIZE(byt_rt5651_ssp0_aif2_map));
540         } else {
541                 ret = snd_soc_dapm_add_routes(&card->dapm,
542                                         byt_rt5651_ssp2_aif1_map,
543                                         ARRAY_SIZE(byt_rt5651_ssp2_aif1_map));
544         }
545         if (ret)
546                 return ret;
547 
548         ret = snd_soc_add_card_controls(card, byt_rt5651_controls,
549                                         ARRAY_SIZE(byt_rt5651_controls));
550         if (ret) {
551                 dev_err(card->dev, "unable to add card controls\n");
552                 return ret;
553         }
554         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
555         snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
556 
557         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
558                 /*
559                  * The firmware might enable the clock at
560                  * boot (this information may or may not
561                  * be reflected in the enable clock register).
562                  * To change the rate we must disable the clock
563                  * first to cover these cases. Due to common
564                  * clock framework restrictions that do not allow
565                  * to disable a clock that has not been enabled,
566                  * we need to enable the clock first.
567                  */
568                 ret = clk_prepare_enable(priv->mclk);
569                 if (!ret)
570                         clk_disable_unprepare(priv->mclk);
571 
572                 if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
573                         ret = clk_set_rate(priv->mclk, 25000000);
574                 else
575                         ret = clk_set_rate(priv->mclk, 19200000);
576 
577                 if (ret)
578                         dev_err(card->dev, "unable to set MCLK rate\n");
579         }
580 
581         if (BYT_RT5651_JDSRC(byt_rt5651_quirk)) {
582                 ret = snd_soc_card_jack_new(runtime->card, "Headset",
583                                     SND_JACK_HEADSET | SND_JACK_BTN_0,
584                                     &priv->jack, bytcr_jack_pins,
585                                     ARRAY_SIZE(bytcr_jack_pins));
586                 if (ret) {
587                         dev_err(runtime->dev, "jack creation failed %d\n", ret);
588                         return ret;
589                 }
590 
591                 snd_jack_set_key(priv->jack.jack, SND_JACK_BTN_0,
592                                  KEY_PLAYPAUSE);
593 
594                 ret = snd_soc_component_set_jack(codec, &priv->jack, NULL);
595                 if (ret)
596                         return ret;
597         }
598 
599         return 0;
600 }
601 
602 static const struct snd_soc_pcm_stream byt_rt5651_dai_params = {
603         .formats = SNDRV_PCM_FMTBIT_S24_LE,
604         .rate_min = 48000,
605         .rate_max = 48000,
606         .channels_min = 2,
607         .channels_max = 2,
608 };
609 
610 static int byt_rt5651_codec_fixup(struct snd_soc_pcm_runtime *rtd,
611                             struct snd_pcm_hw_params *params)
612 {
613         struct snd_interval *rate = hw_param_interval(params,
614                         SNDRV_PCM_HW_PARAM_RATE);
615         struct snd_interval *channels = hw_param_interval(params,
616                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
617         int ret, bits;
618 
619         /* The DSP will covert the FE rate to 48k, stereo */
620         rate->min = rate->max = 48000;
621         channels->min = channels->max = 2;
622 
623         if ((byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1) ||
624             (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)) {
625                 /* set SSP0 to 16-bit */
626                 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
627                 bits = 16;
628         } else {
629                 /* set SSP2 to 24-bit */
630                 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
631                 bits = 24;
632         }
633 
634         /*
635          * Default mode for SSP configuration is TDM 4 slot, override config
636          * with explicit setting to I2S 2ch. The word length is set with
637          * dai_set_tdm_slot() since there is no other API exposed
638          */
639         ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
640                                   SND_SOC_DAIFMT_I2S     |
641                                   SND_SOC_DAIFMT_NB_NF   |
642                                   SND_SOC_DAIFMT_CBS_CFS
643                                   );
644 
645         if (ret < 0) {
646                 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
647                 return ret;
648         }
649 
650         ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, bits);
651         if (ret < 0) {
652                 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
653                 return ret;
654         }
655 
656         return 0;
657 }
658 
659 static const unsigned int rates_48000[] = {
660         48000,
661 };
662 
663 static const struct snd_pcm_hw_constraint_list constraints_48000 = {
664         .count = ARRAY_SIZE(rates_48000),
665         .list  = rates_48000,
666 };
667 
668 static int byt_rt5651_aif1_startup(struct snd_pcm_substream *substream)
669 {
670         return snd_pcm_hw_constraint_list(substream->runtime, 0,
671                         SNDRV_PCM_HW_PARAM_RATE,
672                         &constraints_48000);
673 }
674 
675 static const struct snd_soc_ops byt_rt5651_aif1_ops = {
676         .startup = byt_rt5651_aif1_startup,
677 };
678 
679 static const struct snd_soc_ops byt_rt5651_be_ssp2_ops = {
680         .hw_params = byt_rt5651_aif1_hw_params,
681 };
682 
683 static struct snd_soc_dai_link byt_rt5651_dais[] = {
684         [MERR_DPCM_AUDIO] = {
685                 .name = "Audio Port",
686                 .stream_name = "Audio",
687                 .cpu_dai_name = "media-cpu-dai",
688                 .codec_dai_name = "snd-soc-dummy-dai",
689                 .codec_name = "snd-soc-dummy",
690                 .platform_name = "sst-mfld-platform",
691                 .nonatomic = true,
692                 .dynamic = 1,
693                 .dpcm_playback = 1,
694                 .dpcm_capture = 1,
695                 .ops = &byt_rt5651_aif1_ops,
696         },
697         [MERR_DPCM_DEEP_BUFFER] = {
698                 .name = "Deep-Buffer Audio Port",
699                 .stream_name = "Deep-Buffer Audio",
700                 .cpu_dai_name = "deepbuffer-cpu-dai",
701                 .codec_dai_name = "snd-soc-dummy-dai",
702                 .codec_name = "snd-soc-dummy",
703                 .platform_name = "sst-mfld-platform",
704                 .nonatomic = true,
705                 .dynamic = 1,
706                 .dpcm_playback = 1,
707                 .ops = &byt_rt5651_aif1_ops,
708         },
709         /* CODEC<->CODEC link */
710         /* back ends */
711         {
712                 .name = "SSP2-Codec",
713                 .id = 0,
714                 .cpu_dai_name = "ssp2-port",
715                 .platform_name = "sst-mfld-platform",
716                 .no_pcm = 1,
717                 .codec_dai_name = "rt5651-aif1",
718                 .codec_name = "i2c-10EC5651:00",
719                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
720                                                 | SND_SOC_DAIFMT_CBS_CFS,
721                 .be_hw_params_fixup = byt_rt5651_codec_fixup,
722                 .ignore_suspend = 1,
723                 .nonatomic = true,
724                 .dpcm_playback = 1,
725                 .dpcm_capture = 1,
726                 .init = byt_rt5651_init,
727                 .ops = &byt_rt5651_be_ssp2_ops,
728         },
729 };
730 
731 /* SoC card */
732 static char byt_rt5651_codec_name[SND_ACPI_I2C_ID_LEN];
733 static char byt_rt5651_codec_aif_name[12]; /*  = "rt5651-aif[1|2]" */
734 static char byt_rt5651_cpu_dai_name[10]; /*  = "ssp[0|2]-port" */
735 static char byt_rt5651_long_name[50]; /* = "bytcr-rt5651-*-spk-*-mic[-swapped-hp]" */
736 
737 static int byt_rt5651_suspend(struct snd_soc_card *card)
738 {
739         struct snd_soc_component *component;
740 
741         if (!BYT_RT5651_JDSRC(byt_rt5651_quirk))
742                 return 0;
743 
744         for_each_card_components(card, component) {
745                 if (!strcmp(component->name, byt_rt5651_codec_name)) {
746                         dev_dbg(component->dev, "disabling jack detect before suspend\n");
747                         snd_soc_component_set_jack(component, NULL, NULL);
748                         break;
749                 }
750         }
751 
752         return 0;
753 }
754 
755 static int byt_rt5651_resume(struct snd_soc_card *card)
756 {
757         struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
758         struct snd_soc_component *component;
759 
760         if (!BYT_RT5651_JDSRC(byt_rt5651_quirk))
761                 return 0;
762 
763         for_each_card_components(card, component) {
764                 if (!strcmp(component->name, byt_rt5651_codec_name)) {
765                         dev_dbg(component->dev, "re-enabling jack detect after resume\n");
766                         snd_soc_component_set_jack(component, &priv->jack, NULL);
767                         break;
768                 }
769         }
770 
771         return 0;
772 }
773 
774 static struct snd_soc_card byt_rt5651_card = {
775         .name = "bytcr-rt5651",
776         .owner = THIS_MODULE,
777         .dai_link = byt_rt5651_dais,
778         .num_links = ARRAY_SIZE(byt_rt5651_dais),
779         .dapm_widgets = byt_rt5651_widgets,
780         .num_dapm_widgets = ARRAY_SIZE(byt_rt5651_widgets),
781         .dapm_routes = byt_rt5651_audio_map,
782         .num_dapm_routes = ARRAY_SIZE(byt_rt5651_audio_map),
783         .fully_routed = true,
784         .suspend_pre = byt_rt5651_suspend,
785         .resume_post = byt_rt5651_resume,
786 };
787 
788 static const struct x86_cpu_id baytrail_cpu_ids[] = {
789         { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT }, /* Valleyview */
790         {}
791 };
792 
793 static const struct x86_cpu_id cherrytrail_cpu_ids[] = {
794         { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_AIRMONT },     /* Braswell */
795         {}
796 };
797 
798 static const struct acpi_gpio_params first_gpio = { 0, 0, false };
799 static const struct acpi_gpio_params second_gpio = { 1, 0, false };
800 
801 static const struct acpi_gpio_mapping byt_rt5651_amp_en_first[] = {
802         { "ext-amp-enable-gpios", &first_gpio, 1 },
803         { },
804 };
805 
806 static const struct acpi_gpio_mapping byt_rt5651_amp_en_second[] = {
807         { "ext-amp-enable-gpios", &second_gpio, 1 },
808         { },
809 };
810 
811 /*
812  * Some boards have I2cSerialBusV2, GpioIo, GpioInt as ACPI resources, other
813  * boards may  have I2cSerialBusV2, GpioInt, GpioIo instead. We want the
814  * GpioIo one for the ext-amp-enable-gpio and both count for the index in
815  * acpi_gpio_params index.  So we have 2 different mappings and the code
816  * below figures out which one to use.
817  */
818 struct byt_rt5651_acpi_resource_data {
819         int gpio_count;
820         int gpio_int_idx;
821 };
822 
823 static int snd_byt_rt5651_acpi_resource(struct acpi_resource *ares, void *arg)
824 {
825         struct byt_rt5651_acpi_resource_data *data = arg;
826 
827         if (ares->type != ACPI_RESOURCE_TYPE_GPIO)
828                 return 0;
829 
830         if (ares->data.gpio.connection_type == ACPI_RESOURCE_GPIO_TYPE_INT)
831                 data->gpio_int_idx = data->gpio_count;
832 
833         data->gpio_count++;
834         return 0;
835 }
836 
837 static void snd_byt_rt5651_mc_add_amp_en_gpio_mapping(struct device *codec)
838 {
839         struct byt_rt5651_acpi_resource_data data = { 0, -1 };
840         LIST_HEAD(resources);
841         int ret;
842 
843         ret = acpi_dev_get_resources(ACPI_COMPANION(codec), &resources,
844                                      snd_byt_rt5651_acpi_resource, &data);
845         if (ret < 0) {
846                 dev_warn(codec, "Failed to get ACPI resources, not adding external amplifier GPIO mapping\n");
847                 return;
848         }
849 
850         /* All info we need is gathered during the walk */
851         acpi_dev_free_resource_list(&resources);
852 
853         switch (data.gpio_int_idx) {
854         case 0:
855                 devm_acpi_dev_add_driver_gpios(codec, byt_rt5651_amp_en_second);
856                 break;
857         case 1:
858                 devm_acpi_dev_add_driver_gpios(codec, byt_rt5651_amp_en_first);
859                 break;
860         default:
861                 dev_warn(codec, "Unknown GpioInt index %d, not adding external amplifier GPIO mapping\n",
862                          data.gpio_int_idx);
863         }
864 }
865 
866 struct acpi_chan_package {   /* ACPICA seems to require 64 bit integers */
867         u64 aif_value;       /* 1: AIF1, 2: AIF2 */
868         u64 mclock_value;    /* usually 25MHz (0x17d7940), ignored */
869 };
870 
871 static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
872 {
873         const char * const mic_name[] = { "dmic", "in1", "in2", "in12" };
874         struct byt_rt5651_private *priv;
875         struct snd_soc_acpi_mach *mach;
876         struct device *codec_dev;
877         const char *i2c_name = NULL;
878         const char *hp_swapped;
879         bool is_bytcr = false;
880         int ret_val = 0;
881         int dai_index = 0;
882         int i;
883 
884         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
885         if (!priv)
886                 return -ENOMEM;
887 
888         /* register the soc card */
889         byt_rt5651_card.dev = &pdev->dev;
890 
891         mach = byt_rt5651_card.dev->platform_data;
892         snd_soc_card_set_drvdata(&byt_rt5651_card, priv);
893 
894         /* fix index of codec dai */
895         for (i = 0; i < ARRAY_SIZE(byt_rt5651_dais); i++) {
896                 if (!strcmp(byt_rt5651_dais[i].codec_name, "i2c-10EC5651:00")) {
897                         dai_index = i;
898                         break;
899                 }
900         }
901 
902         /* fixup codec name based on HID */
903         i2c_name = acpi_dev_get_first_match_name(mach->id, NULL, -1);
904         if (!i2c_name) {
905                 dev_err(&pdev->dev, "Error cannot find '%s' dev\n", mach->id);
906                 return -ENODEV;
907         }
908         snprintf(byt_rt5651_codec_name, sizeof(byt_rt5651_codec_name),
909                 "%s%s", "i2c-", i2c_name);
910         byt_rt5651_dais[dai_index].codec_name = byt_rt5651_codec_name;
911 
912         codec_dev = bus_find_device_by_name(&i2c_bus_type, NULL,
913                                             byt_rt5651_codec_name);
914         if (!codec_dev)
915                 return -EPROBE_DEFER;
916 
917         /*
918          * swap SSP0 if bytcr is detected
919          * (will be overridden if DMI quirk is detected)
920          */
921         if (x86_match_cpu(baytrail_cpu_ids)) {
922                 if (mach->mach_params.acpi_ipc_irq_index == 0)
923                         is_bytcr = true;
924         }
925 
926         if (is_bytcr) {
927                 /*
928                  * Baytrail CR platforms may have CHAN package in BIOS, try
929                  * to find relevant routing quirk based as done on Windows
930                  * platforms. We have to read the information directly from the
931                  * BIOS, at this stage the card is not created and the links
932                  * with the codec driver/pdata are non-existent
933                  */
934 
935                 struct acpi_chan_package chan_package;
936 
937                 /* format specified: 2 64-bit integers */
938                 struct acpi_buffer format = {sizeof("NN"), "NN"};
939                 struct acpi_buffer state = {0, NULL};
940                 struct snd_soc_acpi_package_context pkg_ctx;
941                 bool pkg_found = false;
942 
943                 state.length = sizeof(chan_package);
944                 state.pointer = &chan_package;
945 
946                 pkg_ctx.name = "CHAN";
947                 pkg_ctx.length = 2;
948                 pkg_ctx.format = &format;
949                 pkg_ctx.state = &state;
950                 pkg_ctx.data_valid = false;
951 
952                 pkg_found = snd_soc_acpi_find_package_from_hid(mach->id,
953                                                                &pkg_ctx);
954                 if (pkg_found) {
955                         if (chan_package.aif_value == 1) {
956                                 dev_info(&pdev->dev, "BIOS Routing: AIF1 connected\n");
957                                 byt_rt5651_quirk |= BYT_RT5651_SSP0_AIF1;
958                         } else  if (chan_package.aif_value == 2) {
959                                 dev_info(&pdev->dev, "BIOS Routing: AIF2 connected\n");
960                                 byt_rt5651_quirk |= BYT_RT5651_SSP0_AIF2;
961                         } else {
962                                 dev_info(&pdev->dev, "BIOS Routing isn't valid, ignored\n");
963                                 pkg_found = false;
964                         }
965                 }
966 
967                 if (!pkg_found) {
968                         /* no BIOS indications, assume SSP0-AIF2 connection */
969                         byt_rt5651_quirk |= BYT_RT5651_SSP0_AIF2;
970                 }
971         }
972 
973         /* check quirks before creating card */
974         dmi_check_system(byt_rt5651_quirk_table);
975 
976         /* Must be called before register_card, also see declaration comment. */
977         ret_val = byt_rt5651_add_codec_device_props(codec_dev);
978         if (ret_val) {
979                 put_device(codec_dev);
980                 return ret_val;
981         }
982 
983         /* Cherry Trail devices use an external amplifier enable gpio */
984         if (x86_match_cpu(cherrytrail_cpu_ids)) {
985                 snd_byt_rt5651_mc_add_amp_en_gpio_mapping(codec_dev);
986                 priv->ext_amp_gpio = devm_fwnode_get_index_gpiod_from_child(
987                                                 &pdev->dev, "ext-amp-enable", 0,
988                                                 codec_dev->fwnode,
989                                                 GPIOD_OUT_LOW, "speaker-amp");
990                 if (IS_ERR(priv->ext_amp_gpio)) {
991                         ret_val = PTR_ERR(priv->ext_amp_gpio);
992                         switch (ret_val) {
993                         case -ENOENT:
994                                 priv->ext_amp_gpio = NULL;
995                                 break;
996                         default:
997                                 dev_err(&pdev->dev, "Failed to get ext-amp-enable GPIO: %d\n",
998                                         ret_val);
999                                 /* fall through */
1000                         case -EPROBE_DEFER:
1001                                 put_device(codec_dev);
1002                                 return ret_val;
1003                         }
1004                 }
1005         }
1006 
1007         put_device(codec_dev);
1008 
1009         log_quirks(&pdev->dev);
1010 
1011         if ((byt_rt5651_quirk & BYT_RT5651_SSP2_AIF2) ||
1012             (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)) {
1013                 /* fixup codec aif name */
1014                 snprintf(byt_rt5651_codec_aif_name,
1015                         sizeof(byt_rt5651_codec_aif_name),
1016                         "%s", "rt5651-aif2");
1017 
1018                 byt_rt5651_dais[dai_index].codec_dai_name =
1019                         byt_rt5651_codec_aif_name;
1020         }
1021 
1022         if ((byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1) ||
1023             (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)) {
1024                 /* fixup cpu dai name name */
1025                 snprintf(byt_rt5651_cpu_dai_name,
1026                         sizeof(byt_rt5651_cpu_dai_name),
1027                         "%s", "ssp0-port");
1028 
1029                 byt_rt5651_dais[dai_index].cpu_dai_name =
1030                         byt_rt5651_cpu_dai_name;
1031         }
1032 
1033         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
1034                 priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
1035                 if (IS_ERR(priv->mclk)) {
1036                         ret_val = PTR_ERR(priv->mclk);
1037                         dev_err(&pdev->dev,
1038                                 "Failed to get MCLK from pmc_plt_clk_3: %d\n",
1039                                 ret_val);
1040                         /*
1041                          * Fall back to bit clock usage for -ENOENT (clock not
1042                          * available likely due to missing dependencies), bail
1043                          * for all other errors, including -EPROBE_DEFER
1044                          */
1045                         if (ret_val != -ENOENT)
1046                                 return ret_val;
1047                         byt_rt5651_quirk &= ~BYT_RT5651_MCLK_EN;
1048                 }
1049         }
1050 
1051         if (byt_rt5651_quirk & BYT_RT5651_HP_LR_SWAPPED)
1052                 hp_swapped = "-hp-swapped";
1053         else
1054                 hp_swapped = "";
1055 
1056         snprintf(byt_rt5651_long_name, sizeof(byt_rt5651_long_name),
1057                  "bytcr-rt5651-%s-spk-%s-mic%s",
1058                  (byt_rt5651_quirk & BYT_RT5651_MONO_SPEAKER) ?
1059                         "mono" : "stereo",
1060                  mic_name[BYT_RT5651_MAP(byt_rt5651_quirk)], hp_swapped);
1061         byt_rt5651_card.long_name = byt_rt5651_long_name;
1062 
1063         ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_rt5651_card);
1064 
1065         if (ret_val) {
1066                 dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n",
1067                         ret_val);
1068                 return ret_val;
1069         }
1070         platform_set_drvdata(pdev, &byt_rt5651_card);
1071         return ret_val;
1072 }
1073 
1074 static struct platform_driver snd_byt_rt5651_mc_driver = {
1075         .driver = {
1076                 .name = "bytcr_rt5651",
1077         },
1078         .probe = snd_byt_rt5651_mc_probe,
1079 };
1080 
1081 module_platform_driver(snd_byt_rt5651_mc_driver);
1082 
1083 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver for RT5651");
1084 MODULE_AUTHOR("Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>");
1085 MODULE_LICENSE("GPL v2");
1086 MODULE_ALIAS("platform:bytcr_rt5651");
1087 

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