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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/slab.h>
 30 #include <asm/cpu_device_id.h>
 31 #include <asm/platform_sst_audio.h>
 32 #include <sound/pcm.h>
 33 #include <sound/pcm_params.h>
 34 #include <sound/soc.h>
 35 #include <sound/jack.h>
 36 #include <sound/soc-acpi.h>
 37 #include "../../codecs/rt5651.h"
 38 #include "../atom/sst-atom-controls.h"
 39 
 40 enum {
 41         BYT_RT5651_DMIC_MAP,
 42         BYT_RT5651_IN1_MAP,
 43         BYT_RT5651_IN2_MAP,
 44         BYT_RT5651_IN1_IN2_MAP,
 45         BYT_RT5651_IN1_HS_IN3_MAP,
 46         BYT_RT5651_IN2_HS_IN3_MAP,
 47 };
 48 
 49 enum {
 50         BYT_RT5651_JD_NULL      = (RT5651_JD_NULL << 4),
 51         BYT_RT5651_JD1_1        = (RT5651_JD1_1 << 4),
 52         BYT_RT5651_JD1_2        = (RT5651_JD1_2 << 4),
 53         BYT_RT5651_JD2          = (RT5651_JD2 << 4),
 54 };
 55 
 56 enum {
 57         BYT_RT5651_OVCD_TH_600UA  = (6 << 8),
 58         BYT_RT5651_OVCD_TH_1500UA = (15 << 8),
 59         BYT_RT5651_OVCD_TH_2000UA = (20 << 8),
 60 };
 61 
 62 enum {
 63         BYT_RT5651_OVCD_SF_0P5  = (RT5651_OVCD_SF_0P5 << 13),
 64         BYT_RT5651_OVCD_SF_0P75 = (RT5651_OVCD_SF_0P75 << 13),
 65         BYT_RT5651_OVCD_SF_1P0  = (RT5651_OVCD_SF_1P0 << 13),
 66         BYT_RT5651_OVCD_SF_1P5  = (RT5651_OVCD_SF_1P5 << 13),
 67 };
 68 
 69 #define BYT_RT5651_MAP(quirk)           ((quirk) & GENMASK(3, 0))
 70 #define BYT_RT5651_JDSRC(quirk)         (((quirk) & GENMASK(7, 4)) >> 4)
 71 #define BYT_RT5651_OVCD_TH(quirk)       (((quirk) & GENMASK(12, 8)) >> 8)
 72 #define BYT_RT5651_OVCD_SF(quirk)       (((quirk) & GENMASK(14, 13)) >> 13)
 73 #define BYT_RT5651_DMIC_EN              BIT(16)
 74 #define BYT_RT5651_MCLK_EN              BIT(17)
 75 #define BYT_RT5651_MCLK_25MHZ           BIT(18)
 76 #define BYT_RT5651_SSP2_AIF2            BIT(19) /* default is using AIF1  */
 77 #define BYT_RT5651_SSP0_AIF1            BIT(20)
 78 #define BYT_RT5651_SSP0_AIF2            BIT(21)
 79 
 80 /* jack-detect-source + dmic-en + ovcd-th + -sf + terminating empty entry */
 81 #define MAX_NO_PROPS 5
 82 
 83 struct byt_rt5651_private {
 84         struct clk *mclk;
 85         struct snd_soc_jack jack;
 86 };
 87 
 88 /* Default: jack-detect on JD1_1, internal mic on in2, headsetmic on in3 */
 89 static unsigned long byt_rt5651_quirk = BYT_RT5651_MCLK_EN |
 90                                         BYT_RT5651_JD1_1 |
 91                                         BYT_RT5651_OVCD_TH_2000UA |
 92                                         BYT_RT5651_OVCD_SF_0P75 |
 93                                         BYT_RT5651_IN2_HS_IN3_MAP;
 94 
 95 static void log_quirks(struct device *dev)
 96 {
 97         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_DMIC_MAP)
 98                 dev_info(dev, "quirk DMIC_MAP enabled");
 99         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN1_MAP)
100                 dev_info(dev, "quirk IN1_MAP enabled");
101         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN2_MAP)
102                 dev_info(dev, "quirk IN2_MAP enabled");
103         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN1_HS_IN3_MAP)
104                 dev_info(dev, "quirk IN1_HS_IN3_MAP enabled");
105         if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN2_HS_IN3_MAP)
106                 dev_info(dev, "quirk IN2_HS_IN3_MAP enabled");
107         if (BYT_RT5651_JDSRC(byt_rt5651_quirk)) {
108                 dev_info(dev, "quirk realtek,jack-detect-source %ld\n",
109                          BYT_RT5651_JDSRC(byt_rt5651_quirk));
110                 dev_info(dev, "quirk realtek,over-current-threshold-microamp %ld\n",
111                          BYT_RT5651_OVCD_TH(byt_rt5651_quirk) * 100);
112                 dev_info(dev, "quirk realtek,over-current-scale-factor %ld\n",
113                          BYT_RT5651_OVCD_SF(byt_rt5651_quirk));
114         }
115         if (byt_rt5651_quirk & BYT_RT5651_DMIC_EN)
116                 dev_info(dev, "quirk DMIC enabled");
117         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
118                 dev_info(dev, "quirk MCLK_EN enabled");
119         if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
120                 dev_info(dev, "quirk MCLK_25MHZ enabled");
121         if (byt_rt5651_quirk & BYT_RT5651_SSP2_AIF2)
122                 dev_info(dev, "quirk SSP2_AIF2 enabled\n");
123         if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1)
124                 dev_info(dev, "quirk SSP0_AIF1 enabled\n");
125         if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)
126                 dev_info(dev, "quirk SSP0_AIF2 enabled\n");
127 }
128 
129 #define BYT_CODEC_DAI1  "rt5651-aif1"
130 #define BYT_CODEC_DAI2  "rt5651-aif2"
131 
132 static int byt_rt5651_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai,
133                                               int rate, int bclk_ratio)
134 {
135         int clk_id, clk_freq, ret;
136 
137         /* Configure the PLL before selecting it */
138         if (!(byt_rt5651_quirk & BYT_RT5651_MCLK_EN)) {
139                 clk_id = RT5651_PLL1_S_BCLK1,
140                 clk_freq = rate * bclk_ratio;
141         } else {
142                 clk_id = RT5651_PLL1_S_MCLK;
143                 if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
144                         clk_freq = 25000000;
145                 else
146                         clk_freq = 19200000;
147         }
148         ret = snd_soc_dai_set_pll(codec_dai, 0, clk_id, clk_freq, rate * 512);
149         if (ret < 0) {
150                 dev_err(codec_dai->component->dev, "can't set pll: %d\n", ret);
151                 return ret;
152         }
153 
154         ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_PLL1,
155                                      rate * 512, SND_SOC_CLOCK_IN);
156         if (ret < 0) {
157                 dev_err(codec_dai->component->dev, "can't set clock %d\n", ret);
158                 return ret;
159         }
160 
161         return 0;
162 }
163 
164 static int platform_clock_control(struct snd_soc_dapm_widget *w,
165                                   struct snd_kcontrol *k, int  event)
166 {
167         struct snd_soc_dapm_context *dapm = w->dapm;
168         struct snd_soc_card *card = dapm->card;
169         struct snd_soc_dai *codec_dai;
170         struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
171         int ret;
172 
173         codec_dai = snd_soc_card_get_codec_dai(card, BYT_CODEC_DAI1);
174         if (!codec_dai)
175                 codec_dai = snd_soc_card_get_codec_dai(card, BYT_CODEC_DAI2);
176         if (!codec_dai) {
177                 dev_err(card->dev,
178                         "Codec dai not found; Unable to set platform clock\n");
179                 return -EIO;
180         }
181 
182         if (SND_SOC_DAPM_EVENT_ON(event)) {
183                 if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
184                         ret = clk_prepare_enable(priv->mclk);
185                         if (ret < 0) {
186                                 dev_err(card->dev,
187                                         "could not configure MCLK state");
188                                 return ret;
189                         }
190                 }
191                 ret = byt_rt5651_prepare_and_enable_pll1(codec_dai, 48000, 50);
192         } else {
193                 /*
194                  * Set codec clock source to internal clock before
195                  * turning off the platform clock. Codec needs clock
196                  * for Jack detection and button press
197                  */
198                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_RCCLK,
199                                              48000 * 512,
200                                              SND_SOC_CLOCK_IN);
201                 if (!ret)
202                         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
203                                 clk_disable_unprepare(priv->mclk);
204         }
205 
206         if (ret < 0) {
207                 dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
208                 return ret;
209         }
210 
211         return 0;
212 }
213 
214 static const struct snd_soc_dapm_widget byt_rt5651_widgets[] = {
215         SND_SOC_DAPM_HP("Headphone", NULL),
216         SND_SOC_DAPM_MIC("Headset Mic", NULL),
217         SND_SOC_DAPM_MIC("Internal Mic", NULL),
218         SND_SOC_DAPM_SPK("Speaker", NULL),
219         SND_SOC_DAPM_LINE("Line In", NULL),
220         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
221                             platform_clock_control, SND_SOC_DAPM_PRE_PMU |
222                             SND_SOC_DAPM_POST_PMD),
223 
224 };
225 
226 static const struct snd_soc_dapm_route byt_rt5651_audio_map[] = {
227         {"Headphone", NULL, "Platform Clock"},
228         {"Headset Mic", NULL, "Platform Clock"},
229         {"Internal Mic", NULL, "Platform Clock"},
230         {"Speaker", NULL, "Platform Clock"},
231         {"Line In", NULL, "Platform Clock"},
232 
233         {"Headset Mic", NULL, "micbias1"}, /* lowercase for rt5651 */
234         {"Headphone", NULL, "HPOL"},
235         {"Headphone", NULL, "HPOR"},
236         {"Speaker", NULL, "LOUTL"},
237         {"Speaker", NULL, "LOUTR"},
238         {"IN2P", NULL, "Line In"},
239         {"IN2N", NULL, "Line In"},
240 
241 };
242 
243 static const struct snd_soc_dapm_route byt_rt5651_intmic_dmic_map[] = {
244         {"IN2P", NULL, "Headset Mic"},
245         {"DMIC L1", NULL, "Internal Mic"},
246         {"DMIC R1", NULL, "Internal Mic"},
247 };
248 
249 static const struct snd_soc_dapm_route byt_rt5651_intmic_in1_map[] = {
250         {"Internal Mic", NULL, "micbias1"},
251         {"IN1P", NULL, "Internal Mic"},
252         {"IN2P", NULL, "Headset Mic"},
253 };
254 
255 static const struct snd_soc_dapm_route byt_rt5651_intmic_in2_map[] = {
256         {"Internal Mic", NULL, "micbias1"},
257         {"IN1P", NULL, "Headset Mic"},
258         {"IN2P", NULL, "Internal Mic"},
259 };
260 
261 static const struct snd_soc_dapm_route byt_rt5651_intmic_in1_in2_map[] = {
262         {"Internal Mic", NULL, "micbias1"},
263         {"IN1P", NULL, "Internal Mic"},
264         {"IN2P", NULL, "Internal Mic"},
265         {"IN3P", NULL, "Headset Mic"},
266 };
267 
268 static const struct snd_soc_dapm_route byt_rt5651_intmic_in1_hs_in3_map[] = {
269         {"Internal Mic", NULL, "micbias1"},
270         {"IN1P", NULL, "Internal Mic"},
271         {"IN3P", NULL, "Headset Mic"},
272 };
273 
274 static const struct snd_soc_dapm_route byt_rt5651_intmic_in2_hs_in3_map[] = {
275         {"Internal Mic", NULL, "micbias1"},
276         {"IN2P", NULL, "Internal Mic"},
277         {"IN3P", NULL, "Headset Mic"},
278 };
279 
280 static const struct snd_soc_dapm_route byt_rt5651_ssp0_aif1_map[] = {
281         {"ssp0 Tx", NULL, "modem_out"},
282         {"modem_in", NULL, "ssp0 Rx"},
283 
284         {"AIF1 Playback", NULL, "ssp0 Tx"},
285         {"ssp0 Rx", NULL, "AIF1 Capture"},
286 };
287 
288 static const struct snd_soc_dapm_route byt_rt5651_ssp0_aif2_map[] = {
289         {"ssp0 Tx", NULL, "modem_out"},
290         {"modem_in", NULL, "ssp0 Rx"},
291 
292         {"AIF2 Playback", NULL, "ssp0 Tx"},
293         {"ssp0 Rx", NULL, "AIF2 Capture"},
294 };
295 
296 static const struct snd_soc_dapm_route byt_rt5651_ssp2_aif1_map[] = {
297         {"ssp2 Tx", NULL, "codec_out0"},
298         {"ssp2 Tx", NULL, "codec_out1"},
299         {"codec_in0", NULL, "ssp2 Rx"},
300         {"codec_in1", NULL, "ssp2 Rx"},
301 
302         {"AIF1 Playback", NULL, "ssp2 Tx"},
303         {"ssp2 Rx", NULL, "AIF1 Capture"},
304 };
305 
306 static const struct snd_soc_dapm_route byt_rt5651_ssp2_aif2_map[] = {
307         {"ssp2 Tx", NULL, "codec_out0"},
308         {"ssp2 Tx", NULL, "codec_out1"},
309         {"codec_in0", NULL, "ssp2 Rx"},
310         {"codec_in1", NULL, "ssp2 Rx"},
311 
312         {"AIF2 Playback", NULL, "ssp2 Tx"},
313         {"ssp2 Rx", NULL, "AIF2 Capture"},
314 };
315 
316 static const struct snd_kcontrol_new byt_rt5651_controls[] = {
317         SOC_DAPM_PIN_SWITCH("Headphone"),
318         SOC_DAPM_PIN_SWITCH("Headset Mic"),
319         SOC_DAPM_PIN_SWITCH("Internal Mic"),
320         SOC_DAPM_PIN_SWITCH("Speaker"),
321         SOC_DAPM_PIN_SWITCH("Line In"),
322 };
323 
324 static struct snd_soc_jack_pin bytcr_jack_pins[] = {
325         {
326                 .pin    = "Headphone",
327                 .mask   = SND_JACK_HEADPHONE,
328         },
329         {
330                 .pin    = "Headset Mic",
331                 .mask   = SND_JACK_MICROPHONE,
332         },
333 };
334 
335 static int byt_rt5651_aif1_hw_params(struct snd_pcm_substream *substream,
336                                         struct snd_pcm_hw_params *params)
337 {
338         struct snd_soc_pcm_runtime *rtd = substream->private_data;
339         struct snd_soc_dai *codec_dai = rtd->codec_dai;
340         snd_pcm_format_t format = params_format(params);
341         int rate = params_rate(params);
342         int bclk_ratio;
343 
344         if (format == SNDRV_PCM_FORMAT_S16_LE)
345                 bclk_ratio = 32;
346         else
347                 bclk_ratio = 50;
348 
349         return byt_rt5651_prepare_and_enable_pll1(codec_dai, rate, bclk_ratio);
350 }
351 
352 static int byt_rt5651_quirk_cb(const struct dmi_system_id *id)
353 {
354         byt_rt5651_quirk = (unsigned long)id->driver_data;
355         return 1;
356 }
357 
358 static const struct dmi_system_id byt_rt5651_quirk_table[] = {
359         {
360                 .callback = byt_rt5651_quirk_cb,
361                 .matches = {
362                         DMI_MATCH(DMI_SYS_VENDOR, "Circuitco"),
363                         DMI_MATCH(DMI_PRODUCT_NAME, "Minnowboard Max B3 PLATFORM"),
364                 },
365                 .driver_data = (void *)(BYT_RT5651_IN1_HS_IN3_MAP),
366         },
367         {
368                 .callback = byt_rt5651_quirk_cb,
369                 .matches = {
370                         DMI_MATCH(DMI_SYS_VENDOR, "ADI"),
371                         DMI_MATCH(DMI_PRODUCT_NAME, "Minnowboard Turbot"),
372                 },
373                 .driver_data = (void *)(BYT_RT5651_MCLK_EN |
374                                         BYT_RT5651_IN1_HS_IN3_MAP),
375         },
376         {
377                 .callback = byt_rt5651_quirk_cb,
378                 .matches = {
379                         DMI_MATCH(DMI_SYS_VENDOR, "KIANO"),
380                         DMI_MATCH(DMI_PRODUCT_NAME, "KIANO SlimNote 14.2"),
381                 },
382                 .driver_data = (void *)(BYT_RT5651_MCLK_EN |
383                                         BYT_RT5651_JD1_1 |
384                                         BYT_RT5651_OVCD_TH_2000UA |
385                                         BYT_RT5651_OVCD_SF_0P75 |
386                                         BYT_RT5651_IN1_IN2_MAP),
387         },
388         {
389                 /* Chuwi Vi8 Plus (CWI519) */
390                 .callback = byt_rt5651_quirk_cb,
391                 .matches = {
392                         DMI_MATCH(DMI_SYS_VENDOR, "Hampoo"),
393                         DMI_MATCH(DMI_PRODUCT_NAME, "D2D3_Vi8A1"),
394                 },
395                 .driver_data = (void *)(BYT_RT5651_MCLK_EN |
396                                         BYT_RT5651_JD1_1 |
397                                         BYT_RT5651_OVCD_TH_2000UA |
398                                         BYT_RT5651_OVCD_SF_0P75 |
399                                         BYT_RT5651_IN2_HS_IN3_MAP),
400         },
401         {
402                 /* VIOS LTH17 */
403                 .callback = byt_rt5651_quirk_cb,
404                 .matches = {
405                         DMI_MATCH(DMI_SYS_VENDOR, "VIOS"),
406                         DMI_MATCH(DMI_PRODUCT_NAME, "LTH17"),
407                 },
408                 .driver_data = (void *)(BYT_RT5651_MCLK_EN |
409                                         BYT_RT5651_JD1_1 |
410                                         BYT_RT5651_OVCD_TH_2000UA |
411                                         BYT_RT5651_OVCD_SF_1P0 |
412                                         BYT_RT5651_IN1_IN2_MAP),
413         },
414         {}
415 };
416 
417 /*
418  * Note this MUST be called before snd_soc_register_card(), so that the props
419  * are in place before the codec component driver's probe function parses them.
420  */
421 static int byt_rt5651_add_codec_device_props(const char *i2c_dev_name)
422 {
423         struct property_entry props[MAX_NO_PROPS] = {};
424         struct device *i2c_dev;
425         int ret, cnt = 0;
426 
427         i2c_dev = bus_find_device_by_name(&i2c_bus_type, NULL, i2c_dev_name);
428         if (!i2c_dev)
429                 return -EPROBE_DEFER;
430 
431         props[cnt++] = PROPERTY_ENTRY_U32("realtek,jack-detect-source",
432                                 BYT_RT5651_JDSRC(byt_rt5651_quirk));
433 
434         props[cnt++] = PROPERTY_ENTRY_U32("realtek,over-current-threshold-microamp",
435                                 BYT_RT5651_OVCD_TH(byt_rt5651_quirk) * 100);
436 
437         props[cnt++] = PROPERTY_ENTRY_U32("realtek,over-current-scale-factor",
438                                 BYT_RT5651_OVCD_SF(byt_rt5651_quirk));
439 
440         if (byt_rt5651_quirk & BYT_RT5651_DMIC_EN)
441                 props[cnt++] = PROPERTY_ENTRY_BOOL("realtek,dmic-en");
442 
443         ret = device_add_properties(i2c_dev, props);
444         put_device(i2c_dev);
445 
446         return ret;
447 }
448 
449 static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
450 {
451         struct snd_soc_card *card = runtime->card;
452         struct snd_soc_component *codec = runtime->codec_dai->component;
453         struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
454         const struct snd_soc_dapm_route *custom_map;
455         int num_routes;
456         int ret;
457 
458         card->dapm.idle_bias_off = true;
459 
460         /* Start with RC clk for jack-detect (we disable MCLK below) */
461         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
462                 snd_soc_component_update_bits(codec, RT5651_GLB_CLK,
463                         RT5651_SCLK_SRC_MASK, RT5651_SCLK_SRC_RCCLK);
464 
465         switch (BYT_RT5651_MAP(byt_rt5651_quirk)) {
466         case BYT_RT5651_IN1_MAP:
467                 custom_map = byt_rt5651_intmic_in1_map;
468                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in1_map);
469                 break;
470         case BYT_RT5651_IN2_MAP:
471                 custom_map = byt_rt5651_intmic_in2_map;
472                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in2_map);
473                 break;
474         case BYT_RT5651_IN1_IN2_MAP:
475                 custom_map = byt_rt5651_intmic_in1_in2_map;
476                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in1_in2_map);
477                 break;
478         case BYT_RT5651_IN1_HS_IN3_MAP:
479                 custom_map = byt_rt5651_intmic_in1_hs_in3_map;
480                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in1_hs_in3_map);
481                 break;
482         case BYT_RT5651_IN2_HS_IN3_MAP:
483                 custom_map = byt_rt5651_intmic_in2_hs_in3_map;
484                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_in2_hs_in3_map);
485                 break;
486         default:
487                 custom_map = byt_rt5651_intmic_dmic_map;
488                 num_routes = ARRAY_SIZE(byt_rt5651_intmic_dmic_map);
489         }
490         ret = snd_soc_dapm_add_routes(&card->dapm, custom_map, num_routes);
491         if (ret)
492                 return ret;
493 
494         if (byt_rt5651_quirk & BYT_RT5651_SSP2_AIF2) {
495                 ret = snd_soc_dapm_add_routes(&card->dapm,
496                                         byt_rt5651_ssp2_aif2_map,
497                                         ARRAY_SIZE(byt_rt5651_ssp2_aif2_map));
498         } else if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1) {
499                 ret = snd_soc_dapm_add_routes(&card->dapm,
500                                         byt_rt5651_ssp0_aif1_map,
501                                         ARRAY_SIZE(byt_rt5651_ssp0_aif1_map));
502         } else if (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2) {
503                 ret = snd_soc_dapm_add_routes(&card->dapm,
504                                         byt_rt5651_ssp0_aif2_map,
505                                         ARRAY_SIZE(byt_rt5651_ssp0_aif2_map));
506         } else {
507                 ret = snd_soc_dapm_add_routes(&card->dapm,
508                                         byt_rt5651_ssp2_aif1_map,
509                                         ARRAY_SIZE(byt_rt5651_ssp2_aif1_map));
510         }
511         if (ret)
512                 return ret;
513 
514         ret = snd_soc_add_card_controls(card, byt_rt5651_controls,
515                                         ARRAY_SIZE(byt_rt5651_controls));
516         if (ret) {
517                 dev_err(card->dev, "unable to add card controls\n");
518                 return ret;
519         }
520         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
521         snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
522 
523         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
524                 /*
525                  * The firmware might enable the clock at
526                  * boot (this information may or may not
527                  * be reflected in the enable clock register).
528                  * To change the rate we must disable the clock
529                  * first to cover these cases. Due to common
530                  * clock framework restrictions that do not allow
531                  * to disable a clock that has not been enabled,
532                  * we need to enable the clock first.
533                  */
534                 ret = clk_prepare_enable(priv->mclk);
535                 if (!ret)
536                         clk_disable_unprepare(priv->mclk);
537 
538                 if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
539                         ret = clk_set_rate(priv->mclk, 25000000);
540                 else
541                         ret = clk_set_rate(priv->mclk, 19200000);
542 
543                 if (ret)
544                         dev_err(card->dev, "unable to set MCLK rate\n");
545         }
546 
547         if (BYT_RT5651_JDSRC(byt_rt5651_quirk)) {
548                 ret = snd_soc_card_jack_new(runtime->card, "Headset",
549                                     SND_JACK_HEADSET, &priv->jack,
550                                     bytcr_jack_pins, ARRAY_SIZE(bytcr_jack_pins));
551                 if (ret) {
552                         dev_err(runtime->dev, "jack creation failed %d\n", ret);
553                         return ret;
554                 }
555 
556                 ret = snd_soc_component_set_jack(codec, &priv->jack, NULL);
557                 if (ret)
558                         return ret;
559         }
560 
561         return 0;
562 }
563 
564 static const struct snd_soc_pcm_stream byt_rt5651_dai_params = {
565         .formats = SNDRV_PCM_FMTBIT_S24_LE,
566         .rate_min = 48000,
567         .rate_max = 48000,
568         .channels_min = 2,
569         .channels_max = 2,
570 };
571 
572 static int byt_rt5651_codec_fixup(struct snd_soc_pcm_runtime *rtd,
573                             struct snd_pcm_hw_params *params)
574 {
575         struct snd_interval *rate = hw_param_interval(params,
576                         SNDRV_PCM_HW_PARAM_RATE);
577         struct snd_interval *channels = hw_param_interval(params,
578                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
579         int ret, bits;
580 
581         /* The DSP will covert the FE rate to 48k, stereo */
582         rate->min = rate->max = 48000;
583         channels->min = channels->max = 2;
584 
585         if ((byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1) ||
586             (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)) {
587                 /* set SSP0 to 16-bit */
588                 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
589                 bits = 16;
590         } else {
591                 /* set SSP2 to 24-bit */
592                 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
593                 bits = 24;
594         }
595 
596         /*
597          * Default mode for SSP configuration is TDM 4 slot, override config
598          * with explicit setting to I2S 2ch. The word length is set with
599          * dai_set_tdm_slot() since there is no other API exposed
600          */
601         ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
602                                   SND_SOC_DAIFMT_I2S     |
603                                   SND_SOC_DAIFMT_NB_NF   |
604                                   SND_SOC_DAIFMT_CBS_CFS
605                                   );
606 
607         if (ret < 0) {
608                 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
609                 return ret;
610         }
611 
612         ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, bits);
613         if (ret < 0) {
614                 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
615                 return ret;
616         }
617 
618         return 0;
619 }
620 
621 static const unsigned int rates_48000[] = {
622         48000,
623 };
624 
625 static const struct snd_pcm_hw_constraint_list constraints_48000 = {
626         .count = ARRAY_SIZE(rates_48000),
627         .list  = rates_48000,
628 };
629 
630 static int byt_rt5651_aif1_startup(struct snd_pcm_substream *substream)
631 {
632         return snd_pcm_hw_constraint_list(substream->runtime, 0,
633                         SNDRV_PCM_HW_PARAM_RATE,
634                         &constraints_48000);
635 }
636 
637 static const struct snd_soc_ops byt_rt5651_aif1_ops = {
638         .startup = byt_rt5651_aif1_startup,
639 };
640 
641 static const struct snd_soc_ops byt_rt5651_be_ssp2_ops = {
642         .hw_params = byt_rt5651_aif1_hw_params,
643 };
644 
645 static struct snd_soc_dai_link byt_rt5651_dais[] = {
646         [MERR_DPCM_AUDIO] = {
647                 .name = "Audio Port",
648                 .stream_name = "Audio",
649                 .cpu_dai_name = "media-cpu-dai",
650                 .codec_dai_name = "snd-soc-dummy-dai",
651                 .codec_name = "snd-soc-dummy",
652                 .platform_name = "sst-mfld-platform",
653                 .nonatomic = true,
654                 .dynamic = 1,
655                 .dpcm_playback = 1,
656                 .dpcm_capture = 1,
657                 .ops = &byt_rt5651_aif1_ops,
658         },
659         [MERR_DPCM_DEEP_BUFFER] = {
660                 .name = "Deep-Buffer Audio Port",
661                 .stream_name = "Deep-Buffer Audio",
662                 .cpu_dai_name = "deepbuffer-cpu-dai",
663                 .codec_dai_name = "snd-soc-dummy-dai",
664                 .codec_name = "snd-soc-dummy",
665                 .platform_name = "sst-mfld-platform",
666                 .nonatomic = true,
667                 .dynamic = 1,
668                 .dpcm_playback = 1,
669                 .ops = &byt_rt5651_aif1_ops,
670         },
671         /* CODEC<->CODEC link */
672         /* back ends */
673         {
674                 .name = "SSP2-Codec",
675                 .id = 0,
676                 .cpu_dai_name = "ssp2-port",
677                 .platform_name = "sst-mfld-platform",
678                 .no_pcm = 1,
679                 .codec_dai_name = "rt5651-aif1",
680                 .codec_name = "i2c-10EC5651:00",
681                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
682                                                 | SND_SOC_DAIFMT_CBS_CFS,
683                 .be_hw_params_fixup = byt_rt5651_codec_fixup,
684                 .ignore_suspend = 1,
685                 .nonatomic = true,
686                 .dpcm_playback = 1,
687                 .dpcm_capture = 1,
688                 .init = byt_rt5651_init,
689                 .ops = &byt_rt5651_be_ssp2_ops,
690         },
691 };
692 
693 /* SoC card */
694 static struct snd_soc_card byt_rt5651_card = {
695         .name = "bytcr-rt5651",
696         .owner = THIS_MODULE,
697         .dai_link = byt_rt5651_dais,
698         .num_links = ARRAY_SIZE(byt_rt5651_dais),
699         .dapm_widgets = byt_rt5651_widgets,
700         .num_dapm_widgets = ARRAY_SIZE(byt_rt5651_widgets),
701         .dapm_routes = byt_rt5651_audio_map,
702         .num_dapm_routes = ARRAY_SIZE(byt_rt5651_audio_map),
703         .fully_routed = true,
704 };
705 
706 static char byt_rt5651_codec_name[SND_ACPI_I2C_ID_LEN];
707 static char byt_rt5651_codec_aif_name[12]; /*  = "rt5651-aif[1|2]" */
708 static char byt_rt5651_cpu_dai_name[10]; /*  = "ssp[0|2]-port" */
709 static char byt_rt5651_long_name[40]; /* = "bytcr-rt5651-*-spk-*-mic" */
710 
711 static bool is_valleyview(void)
712 {
713         static const struct x86_cpu_id cpu_ids[] = {
714                 { X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */
715                 {}
716         };
717 
718         if (!x86_match_cpu(cpu_ids))
719                 return false;
720         return true;
721 }
722 
723 struct acpi_chan_package {   /* ACPICA seems to require 64 bit integers */
724         u64 aif_value;       /* 1: AIF1, 2: AIF2 */
725         u64 mclock_value;    /* usually 25MHz (0x17d7940), ignored */
726 };
727 
728 static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
729 {
730         const char * const intmic_name[] =
731                 { "dmic", "in1", "in2", "in12", "in1", "in2" };
732         const char * const hsmic_name[] =
733                 {  "in2", "in2", "in1",  "in3", "in3", "in3" };
734         struct byt_rt5651_private *priv;
735         struct snd_soc_acpi_mach *mach;
736         const char *i2c_name = NULL;
737         bool is_bytcr = false;
738         int ret_val = 0;
739         int dai_index = 0;
740         int i;
741 
742         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
743         if (!priv)
744                 return -ENOMEM;
745 
746         /* register the soc card */
747         byt_rt5651_card.dev = &pdev->dev;
748 
749         mach = byt_rt5651_card.dev->platform_data;
750         snd_soc_card_set_drvdata(&byt_rt5651_card, priv);
751 
752         /* fix index of codec dai */
753         for (i = 0; i < ARRAY_SIZE(byt_rt5651_dais); i++) {
754                 if (!strcmp(byt_rt5651_dais[i].codec_name, "i2c-10EC5651:00")) {
755                         dai_index = i;
756                         break;
757                 }
758         }
759 
760         /* fixup codec name based on HID */
761         i2c_name = acpi_dev_get_first_match_name(mach->id, NULL, -1);
762         if (!i2c_name) {
763                 dev_err(&pdev->dev, "Error cannot find '%s' dev\n", mach->id);
764                 return -ENODEV;
765         }
766         snprintf(byt_rt5651_codec_name, sizeof(byt_rt5651_codec_name),
767                 "%s%s", "i2c-", i2c_name);
768         byt_rt5651_dais[dai_index].codec_name = byt_rt5651_codec_name;
769 
770         /*
771          * swap SSP0 if bytcr is detected
772          * (will be overridden if DMI quirk is detected)
773          */
774         if (is_valleyview()) {
775                 struct sst_platform_info *p_info = mach->pdata;
776                 const struct sst_res_info *res_info = p_info->res_info;
777 
778                 if (res_info->acpi_ipc_irq_index == 0)
779                         is_bytcr = true;
780         }
781 
782         if (is_bytcr) {
783                 /*
784                  * Baytrail CR platforms may have CHAN package in BIOS, try
785                  * to find relevant routing quirk based as done on Windows
786                  * platforms. We have to read the information directly from the
787                  * BIOS, at this stage the card is not created and the links
788                  * with the codec driver/pdata are non-existent
789                  */
790 
791                 struct acpi_chan_package chan_package;
792 
793                 /* format specified: 2 64-bit integers */
794                 struct acpi_buffer format = {sizeof("NN"), "NN"};
795                 struct acpi_buffer state = {0, NULL};
796                 struct snd_soc_acpi_package_context pkg_ctx;
797                 bool pkg_found = false;
798 
799                 state.length = sizeof(chan_package);
800                 state.pointer = &chan_package;
801 
802                 pkg_ctx.name = "CHAN";
803                 pkg_ctx.length = 2;
804                 pkg_ctx.format = &format;
805                 pkg_ctx.state = &state;
806                 pkg_ctx.data_valid = false;
807 
808                 pkg_found = snd_soc_acpi_find_package_from_hid(mach->id,
809                                                                &pkg_ctx);
810                 if (pkg_found) {
811                         if (chan_package.aif_value == 1) {
812                                 dev_info(&pdev->dev, "BIOS Routing: AIF1 connected\n");
813                                 byt_rt5651_quirk |= BYT_RT5651_SSP0_AIF1;
814                         } else  if (chan_package.aif_value == 2) {
815                                 dev_info(&pdev->dev, "BIOS Routing: AIF2 connected\n");
816                                 byt_rt5651_quirk |= BYT_RT5651_SSP0_AIF2;
817                         } else {
818                                 dev_info(&pdev->dev, "BIOS Routing isn't valid, ignored\n");
819                                 pkg_found = false;
820                         }
821                 }
822 
823                 if (!pkg_found) {
824                         /* no BIOS indications, assume SSP0-AIF2 connection */
825                         byt_rt5651_quirk |= BYT_RT5651_SSP0_AIF2;
826                 }
827         }
828 
829         /* check quirks before creating card */
830         dmi_check_system(byt_rt5651_quirk_table);
831 
832         /* Must be called before register_card, also see declaration comment. */
833         ret_val = byt_rt5651_add_codec_device_props(byt_rt5651_codec_name);
834         if (ret_val)
835                 return ret_val;
836 
837         log_quirks(&pdev->dev);
838 
839         if ((byt_rt5651_quirk & BYT_RT5651_SSP2_AIF2) ||
840             (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)) {
841                 /* fixup codec aif name */
842                 snprintf(byt_rt5651_codec_aif_name,
843                         sizeof(byt_rt5651_codec_aif_name),
844                         "%s", "rt5651-aif2");
845 
846                 byt_rt5651_dais[dai_index].codec_dai_name =
847                         byt_rt5651_codec_aif_name;
848         }
849 
850         if ((byt_rt5651_quirk & BYT_RT5651_SSP0_AIF1) ||
851             (byt_rt5651_quirk & BYT_RT5651_SSP0_AIF2)) {
852                 /* fixup cpu dai name name */
853                 snprintf(byt_rt5651_cpu_dai_name,
854                         sizeof(byt_rt5651_cpu_dai_name),
855                         "%s", "ssp0-port");
856 
857                 byt_rt5651_dais[dai_index].cpu_dai_name =
858                         byt_rt5651_cpu_dai_name;
859         }
860 
861         if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
862                 priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
863                 if (IS_ERR(priv->mclk)) {
864                         ret_val = PTR_ERR(priv->mclk);
865                         dev_err(&pdev->dev,
866                                 "Failed to get MCLK from pmc_plt_clk_3: %d\n",
867                                 ret_val);
868                         /*
869                          * Fall back to bit clock usage for -ENOENT (clock not
870                          * available likely due to missing dependencies), bail
871                          * for all other errors, including -EPROBE_DEFER
872                          */
873                         if (ret_val != -ENOENT)
874                                 return ret_val;
875                         byt_rt5651_quirk &= ~BYT_RT5651_MCLK_EN;
876                 }
877         }
878 
879         snprintf(byt_rt5651_long_name, sizeof(byt_rt5651_long_name),
880                  "bytcr-rt5651-%s-intmic-%s-hsmic",
881                  intmic_name[BYT_RT5651_MAP(byt_rt5651_quirk)],
882                  hsmic_name[BYT_RT5651_MAP(byt_rt5651_quirk)]);
883         byt_rt5651_card.long_name = byt_rt5651_long_name;
884 
885         ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_rt5651_card);
886 
887         if (ret_val) {
888                 dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n",
889                         ret_val);
890                 return ret_val;
891         }
892         platform_set_drvdata(pdev, &byt_rt5651_card);
893         return ret_val;
894 }
895 
896 static struct platform_driver snd_byt_rt5651_mc_driver = {
897         .driver = {
898                 .name = "bytcr_rt5651",
899         },
900         .probe = snd_byt_rt5651_mc_probe,
901 };
902 
903 module_platform_driver(snd_byt_rt5651_mc_driver);
904 
905 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver for RT5651");
906 MODULE_AUTHOR("Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>");
907 MODULE_LICENSE("GPL v2");
908 MODULE_ALIAS("platform:bytcr_rt5651");
909 

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