Version:  2.0.40 2.2.26 2.4.37 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2

Linux/sound/soc/codecs/sn95031.c

  1 /*
  2  *  sn95031.c -  TI sn95031 Codec driver
  3  *
  4  *  Copyright (C) 2010 Intel Corp
  5  *  Author: Vinod Koul <vinod.koul@intel.com>
  6  *  Author: Harsha Priya <priya.harsha@intel.com>
  7  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  8  *
  9  *  This program is free software; you can redistribute it and/or modify
 10  *  it under the terms of the GNU General Public License as published by
 11  *  the Free Software Foundation; version 2 of the License.
 12  *
 13  *  This program is distributed in the hope that it will be useful, but
 14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
 15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 16  *  General Public License for more details.
 17  *
 18  *  You should have received a copy of the GNU General Public License along
 19  *  with this program; if not, write to the Free Software Foundation, Inc.,
 20  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 21  *
 22  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 23  *
 24  *
 25  */
 26 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 27 
 28 #include <linux/platform_device.h>
 29 #include <linux/delay.h>
 30 #include <linux/slab.h>
 31 #include <linux/module.h>
 32 
 33 #include <asm/intel_scu_ipc.h>
 34 #include <sound/pcm.h>
 35 #include <sound/pcm_params.h>
 36 #include <sound/soc.h>
 37 #include <sound/soc-dapm.h>
 38 #include <sound/initval.h>
 39 #include <sound/tlv.h>
 40 #include <sound/jack.h>
 41 #include "sn95031.h"
 42 
 43 #define SN95031_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100)
 44 #define SN95031_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
 45 
 46 /* adc helper functions */
 47 
 48 /* enables mic bias voltage */
 49 static void sn95031_enable_mic_bias(struct snd_soc_codec *codec)
 50 {
 51         snd_soc_write(codec, SN95031_VAUD, BIT(2)|BIT(1)|BIT(0));
 52         snd_soc_update_bits(codec, SN95031_MICBIAS, BIT(2), BIT(2));
 53 }
 54 
 55 /* Enable/Disable the ADC depending on the argument */
 56 static void configure_adc(struct snd_soc_codec *sn95031_codec, int val)
 57 {
 58         int value = snd_soc_read(sn95031_codec, SN95031_ADC1CNTL1);
 59 
 60         if (val) {
 61                 /* Enable and start the ADC */
 62                 value |= (SN95031_ADC_ENBL | SN95031_ADC_START);
 63                 value &= (~SN95031_ADC_NO_LOOP);
 64         } else {
 65                 /* Just stop the ADC */
 66                 value &= (~SN95031_ADC_START);
 67         }
 68         snd_soc_write(sn95031_codec, SN95031_ADC1CNTL1, value);
 69 }
 70 
 71 /*
 72  * finds an empty channel for conversion
 73  * If the ADC is not enabled then start using 0th channel
 74  * itself. Otherwise find an empty channel by looking for a
 75  * channel in which the stopbit is set to 1. returns the index
 76  * of the first free channel if succeeds or an error code.
 77  *
 78  * Context: can sleep
 79  *
 80  */
 81 static int find_free_channel(struct snd_soc_codec *sn95031_codec)
 82 {
 83         int i, value;
 84 
 85         /* check whether ADC is enabled */
 86         value = snd_soc_read(sn95031_codec, SN95031_ADC1CNTL1);
 87 
 88         if ((value & SN95031_ADC_ENBL) == 0)
 89                 return 0;
 90 
 91         /* ADC is already enabled; Looking for an empty channel */
 92         for (i = 0; i < SN95031_ADC_CHANLS_MAX; i++) {
 93                 value = snd_soc_read(sn95031_codec,
 94                                 SN95031_ADC_CHNL_START_ADDR + i);
 95                 if (value & SN95031_STOPBIT_MASK)
 96                         break;
 97         }
 98         return (i == SN95031_ADC_CHANLS_MAX) ? (-EINVAL) : i;
 99 }
100 
101 /* Initialize the ADC for reading micbias values. Can sleep. */
102 static int sn95031_initialize_adc(struct snd_soc_codec *sn95031_codec)
103 {
104         int base_addr, chnl_addr;
105         int value;
106         int channel_index;
107 
108         /* Index of the first channel in which the stop bit is set */
109         channel_index = find_free_channel(sn95031_codec);
110         if (channel_index < 0) {
111                 pr_err("No free ADC channels");
112                 return channel_index;
113         }
114 
115         base_addr = SN95031_ADC_CHNL_START_ADDR + channel_index;
116 
117         if (!(channel_index == 0 || channel_index ==  SN95031_ADC_LOOP_MAX)) {
118                 /* Reset stop bit for channels other than 0 and 12 */
119                 value = snd_soc_read(sn95031_codec, base_addr);
120                 /* Set the stop bit to zero */
121                 snd_soc_write(sn95031_codec, base_addr, value & 0xEF);
122                 /* Index of the first free channel */
123                 base_addr++;
124                 channel_index++;
125         }
126 
127         /* Since this is the last channel, set the stop bit
128            to 1 by ORing the DIE_SENSOR_CODE with 0x10 */
129         snd_soc_write(sn95031_codec, base_addr,
130                                 SN95031_AUDIO_DETECT_CODE | 0x10);
131 
132         chnl_addr = SN95031_ADC_DATA_START_ADDR + 2 * channel_index;
133         pr_debug("mid_initialize : %x", chnl_addr);
134         configure_adc(sn95031_codec, 1);
135         return chnl_addr;
136 }
137 
138 
139 /* reads the ADC registers and gets the mic bias value in mV. */
140 static unsigned int sn95031_get_mic_bias(struct snd_soc_codec *codec)
141 {
142         u16 adc_adr = sn95031_initialize_adc(codec);
143         u16 adc_val1, adc_val2;
144         unsigned int mic_bias;
145 
146         sn95031_enable_mic_bias(codec);
147 
148         /* Enable the sound card for conversion before reading */
149         snd_soc_write(codec, SN95031_ADC1CNTL3, 0x05);
150         /* Re-toggle the RRDATARD bit */
151         snd_soc_write(codec, SN95031_ADC1CNTL3, 0x04);
152 
153         /* Read the higher bits of data */
154         msleep(1000);
155         adc_val1 = snd_soc_read(codec, adc_adr);
156         adc_adr++;
157         adc_val2 = snd_soc_read(codec, adc_adr);
158 
159         /* Adding lower two bits to the higher bits */
160         mic_bias = (adc_val1 << 2) + (adc_val2 & 3);
161         mic_bias = (mic_bias * SN95031_ADC_ONE_LSB_MULTIPLIER) / 1000;
162         pr_debug("mic bias = %dmV\n", mic_bias);
163         return mic_bias;
164 }
165 /*end - adc helper functions */
166 
167 static int sn95031_read(void *ctx, unsigned int reg, unsigned int *val)
168 {
169         u8 value = 0;
170         int ret;
171 
172         ret = intel_scu_ipc_ioread8(reg, &value);
173         if (ret == 0)
174                 *val = value;
175 
176         return ret;
177 }
178 
179 static int sn95031_write(void *ctx, unsigned int reg, unsigned int value)
180 {
181         return intel_scu_ipc_iowrite8(reg, value);
182 }
183 
184 static const struct regmap_config sn95031_regmap = {
185         .reg_read = sn95031_read,
186         .reg_write = sn95031_write,
187 };
188 
189 static int sn95031_set_vaud_bias(struct snd_soc_codec *codec,
190                 enum snd_soc_bias_level level)
191 {
192         switch (level) {
193         case SND_SOC_BIAS_ON:
194                 break;
195 
196         case SND_SOC_BIAS_PREPARE:
197                 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_STANDBY) {
198                         pr_debug("vaud_bias powering up pll\n");
199                         /* power up the pll */
200                         snd_soc_write(codec, SN95031_AUDPLLCTRL, BIT(5));
201                         /* enable pcm 2 */
202                         snd_soc_update_bits(codec, SN95031_PCM2C2,
203                                         BIT(0), BIT(0));
204                 }
205                 break;
206 
207         case SND_SOC_BIAS_STANDBY:
208                 switch (snd_soc_codec_get_bias_level(codec)) {
209                 case SND_SOC_BIAS_OFF:
210                         pr_debug("vaud_bias power up rail\n");
211                         /* power up the rail */
212                         snd_soc_write(codec, SN95031_VAUD,
213                                         BIT(2)|BIT(1)|BIT(0));
214                         msleep(1);
215                         break;
216                 case SND_SOC_BIAS_PREPARE:
217                         /* turn off pcm */
218                         pr_debug("vaud_bias power dn pcm\n");
219                         snd_soc_update_bits(codec, SN95031_PCM2C2, BIT(0), 0);
220                         snd_soc_write(codec, SN95031_AUDPLLCTRL, 0);
221                         break;
222                 default:
223                         break;
224                 }
225                 break;
226 
227 
228         case SND_SOC_BIAS_OFF:
229                 pr_debug("vaud_bias _OFF doing rail shutdown\n");
230                 snd_soc_write(codec, SN95031_VAUD, BIT(3));
231                 break;
232         }
233 
234         return 0;
235 }
236 
237 static int sn95031_vhs_event(struct snd_soc_dapm_widget *w,
238                     struct snd_kcontrol *kcontrol, int event)
239 {
240         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
241 
242         if (SND_SOC_DAPM_EVENT_ON(event)) {
243                 pr_debug("VHS SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
244                 /* power up the rail */
245                 snd_soc_write(codec, SN95031_VHSP, 0x3D);
246                 snd_soc_write(codec, SN95031_VHSN, 0x3F);
247                 msleep(1);
248         } else if (SND_SOC_DAPM_EVENT_OFF(event)) {
249                 pr_debug("VHS SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
250                 snd_soc_write(codec, SN95031_VHSP, 0xC4);
251                 snd_soc_write(codec, SN95031_VHSN, 0x04);
252         }
253         return 0;
254 }
255 
256 static int sn95031_vihf_event(struct snd_soc_dapm_widget *w,
257                     struct snd_kcontrol *kcontrol, int event)
258 {
259         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
260 
261         if (SND_SOC_DAPM_EVENT_ON(event)) {
262                 pr_debug("VIHF SND_SOC_DAPM_EVENT_ON doing rail startup now\n");
263                 /* power up the rail */
264                 snd_soc_write(codec, SN95031_VIHF, 0x27);
265                 msleep(1);
266         } else if (SND_SOC_DAPM_EVENT_OFF(event)) {
267                 pr_debug("VIHF SND_SOC_DAPM_EVENT_OFF doing rail shutdown\n");
268                 snd_soc_write(codec, SN95031_VIHF, 0x24);
269         }
270         return 0;
271 }
272 
273 static int sn95031_dmic12_event(struct snd_soc_dapm_widget *w,
274                         struct snd_kcontrol *k, int event)
275 {
276         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
277         unsigned int ldo = 0, clk_dir = 0, data_dir = 0;
278 
279         if (SND_SOC_DAPM_EVENT_ON(event)) {
280                 ldo = BIT(5)|BIT(4);
281                 clk_dir = BIT(0);
282                 data_dir = BIT(7);
283         }
284         /* program DMIC LDO, clock and set clock */
285         snd_soc_update_bits(codec, SN95031_MICBIAS, BIT(5)|BIT(4), ldo);
286         snd_soc_update_bits(codec, SN95031_DMICBUF0123, BIT(0), clk_dir);
287         snd_soc_update_bits(codec, SN95031_DMICBUF0123, BIT(7), data_dir);
288         return 0;
289 }
290 
291 static int sn95031_dmic34_event(struct snd_soc_dapm_widget *w,
292                         struct snd_kcontrol *k, int event)
293 {
294         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
295         unsigned int ldo = 0, clk_dir = 0, data_dir = 0;
296 
297         if (SND_SOC_DAPM_EVENT_ON(event)) {
298                 ldo = BIT(5)|BIT(4);
299                 clk_dir = BIT(2);
300                 data_dir = BIT(1);
301         }
302         /* program DMIC LDO, clock and set clock */
303         snd_soc_update_bits(codec, SN95031_MICBIAS, BIT(5)|BIT(4), ldo);
304         snd_soc_update_bits(codec, SN95031_DMICBUF0123, BIT(2), clk_dir);
305         snd_soc_update_bits(codec, SN95031_DMICBUF45, BIT(1), data_dir);
306         return 0;
307 }
308 
309 static int sn95031_dmic56_event(struct snd_soc_dapm_widget *w,
310                         struct snd_kcontrol *k, int event)
311 {
312         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
313         unsigned int ldo = 0;
314 
315         if (SND_SOC_DAPM_EVENT_ON(event))
316                 ldo = BIT(7)|BIT(6);
317 
318         /* program DMIC LDO */
319         snd_soc_update_bits(codec, SN95031_MICBIAS, BIT(7)|BIT(6), ldo);
320         return 0;
321 }
322 
323 /* mux controls */
324 static const char *sn95031_mic_texts[] = { "AMIC", "LineIn" };
325 
326 static SOC_ENUM_SINGLE_DECL(sn95031_micl_enum,
327                             SN95031_ADCCONFIG, 1, sn95031_mic_texts);
328 
329 static const struct snd_kcontrol_new sn95031_micl_mux_control =
330         SOC_DAPM_ENUM("Route", sn95031_micl_enum);
331 
332 static SOC_ENUM_SINGLE_DECL(sn95031_micr_enum,
333                             SN95031_ADCCONFIG, 3, sn95031_mic_texts);
334 
335 static const struct snd_kcontrol_new sn95031_micr_mux_control =
336         SOC_DAPM_ENUM("Route", sn95031_micr_enum);
337 
338 static const char *sn95031_input_texts[] = {    "DMIC1", "DMIC2", "DMIC3",
339                                                 "DMIC4", "DMIC5", "DMIC6",
340                                                 "ADC Left", "ADC Right" };
341 
342 static SOC_ENUM_SINGLE_DECL(sn95031_input1_enum,
343                             SN95031_AUDIOMUX12, 0, sn95031_input_texts);
344 
345 static const struct snd_kcontrol_new sn95031_input1_mux_control =
346         SOC_DAPM_ENUM("Route", sn95031_input1_enum);
347 
348 static SOC_ENUM_SINGLE_DECL(sn95031_input2_enum,
349                             SN95031_AUDIOMUX12, 4, sn95031_input_texts);
350 
351 static const struct snd_kcontrol_new sn95031_input2_mux_control =
352         SOC_DAPM_ENUM("Route", sn95031_input2_enum);
353 
354 static SOC_ENUM_SINGLE_DECL(sn95031_input3_enum,
355                             SN95031_AUDIOMUX34, 0, sn95031_input_texts);
356 
357 static const struct snd_kcontrol_new sn95031_input3_mux_control =
358         SOC_DAPM_ENUM("Route", sn95031_input3_enum);
359 
360 static SOC_ENUM_SINGLE_DECL(sn95031_input4_enum,
361                             SN95031_AUDIOMUX34, 4, sn95031_input_texts);
362 
363 static const struct snd_kcontrol_new sn95031_input4_mux_control =
364         SOC_DAPM_ENUM("Route", sn95031_input4_enum);
365 
366 /* capture path controls */
367 
368 static const char *sn95031_micmode_text[] = {"Single Ended", "Differential"};
369 
370 /* 0dB to 30dB in 10dB steps */
371 static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 10, 0);
372 
373 static SOC_ENUM_SINGLE_DECL(sn95031_micmode1_enum,
374                             SN95031_MICAMP1, 1, sn95031_micmode_text);
375 static SOC_ENUM_SINGLE_DECL(sn95031_micmode2_enum,
376                             SN95031_MICAMP2, 1, sn95031_micmode_text);
377 
378 static const char *sn95031_dmic_cfg_text[] = {"GPO", "DMIC"};
379 
380 static SOC_ENUM_SINGLE_DECL(sn95031_dmic12_cfg_enum,
381                             SN95031_DMICMUX, 0, sn95031_dmic_cfg_text);
382 static SOC_ENUM_SINGLE_DECL(sn95031_dmic34_cfg_enum,
383                             SN95031_DMICMUX, 1, sn95031_dmic_cfg_text);
384 static SOC_ENUM_SINGLE_DECL(sn95031_dmic56_cfg_enum,
385                             SN95031_DMICMUX, 2, sn95031_dmic_cfg_text);
386 
387 static const struct snd_kcontrol_new sn95031_snd_controls[] = {
388         SOC_ENUM("Mic1Mode Capture Route", sn95031_micmode1_enum),
389         SOC_ENUM("Mic2Mode Capture Route", sn95031_micmode2_enum),
390         SOC_ENUM("DMIC12 Capture Route", sn95031_dmic12_cfg_enum),
391         SOC_ENUM("DMIC34 Capture Route", sn95031_dmic34_cfg_enum),
392         SOC_ENUM("DMIC56 Capture Route", sn95031_dmic56_cfg_enum),
393         SOC_SINGLE_TLV("Mic1 Capture Volume", SN95031_MICAMP1,
394                         2, 4, 0, mic_tlv),
395         SOC_SINGLE_TLV("Mic2 Capture Volume", SN95031_MICAMP2,
396                         2, 4, 0, mic_tlv),
397 };
398 
399 /* DAPM widgets */
400 static const struct snd_soc_dapm_widget sn95031_dapm_widgets[] = {
401 
402         /* all end points mic, hs etc */
403         SND_SOC_DAPM_OUTPUT("HPOUTL"),
404         SND_SOC_DAPM_OUTPUT("HPOUTR"),
405         SND_SOC_DAPM_OUTPUT("EPOUT"),
406         SND_SOC_DAPM_OUTPUT("IHFOUTL"),
407         SND_SOC_DAPM_OUTPUT("IHFOUTR"),
408         SND_SOC_DAPM_OUTPUT("LINEOUTL"),
409         SND_SOC_DAPM_OUTPUT("LINEOUTR"),
410         SND_SOC_DAPM_OUTPUT("VIB1OUT"),
411         SND_SOC_DAPM_OUTPUT("VIB2OUT"),
412 
413         SND_SOC_DAPM_INPUT("AMIC1"), /* headset mic */
414         SND_SOC_DAPM_INPUT("AMIC2"),
415         SND_SOC_DAPM_INPUT("DMIC1"),
416         SND_SOC_DAPM_INPUT("DMIC2"),
417         SND_SOC_DAPM_INPUT("DMIC3"),
418         SND_SOC_DAPM_INPUT("DMIC4"),
419         SND_SOC_DAPM_INPUT("DMIC5"),
420         SND_SOC_DAPM_INPUT("DMIC6"),
421         SND_SOC_DAPM_INPUT("LINEINL"),
422         SND_SOC_DAPM_INPUT("LINEINR"),
423 
424         SND_SOC_DAPM_MICBIAS("AMIC1Bias", SN95031_MICBIAS, 2, 0),
425         SND_SOC_DAPM_MICBIAS("AMIC2Bias", SN95031_MICBIAS, 3, 0),
426         SND_SOC_DAPM_MICBIAS("DMIC12Bias", SN95031_DMICMUX, 3, 0),
427         SND_SOC_DAPM_MICBIAS("DMIC34Bias", SN95031_DMICMUX, 4, 0),
428         SND_SOC_DAPM_MICBIAS("DMIC56Bias", SN95031_DMICMUX, 5, 0),
429 
430         SND_SOC_DAPM_SUPPLY("DMIC12supply", SN95031_DMICLK, 0, 0,
431                                 sn95031_dmic12_event,
432                                 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
433         SND_SOC_DAPM_SUPPLY("DMIC34supply", SN95031_DMICLK, 1, 0,
434                                 sn95031_dmic34_event,
435                                 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
436         SND_SOC_DAPM_SUPPLY("DMIC56supply", SN95031_DMICLK, 2, 0,
437                                 sn95031_dmic56_event,
438                                 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
439 
440         SND_SOC_DAPM_AIF_OUT("PCM_Out", "Capture", 0,
441                         SND_SOC_NOPM, 0, 0),
442 
443         SND_SOC_DAPM_SUPPLY("Headset Rail", SND_SOC_NOPM, 0, 0,
444                         sn95031_vhs_event,
445                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
446         SND_SOC_DAPM_SUPPLY("Speaker Rail", SND_SOC_NOPM, 0, 0,
447                         sn95031_vihf_event,
448                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
449 
450         /* playback path driver enables */
451         SND_SOC_DAPM_PGA("Headset Left Playback",
452                         SN95031_DRIVEREN, 0, 0, NULL, 0),
453         SND_SOC_DAPM_PGA("Headset Right Playback",
454                         SN95031_DRIVEREN, 1, 0, NULL, 0),
455         SND_SOC_DAPM_PGA("Speaker Left Playback",
456                         SN95031_DRIVEREN, 2, 0, NULL, 0),
457         SND_SOC_DAPM_PGA("Speaker Right Playback",
458                         SN95031_DRIVEREN, 3, 0, NULL, 0),
459         SND_SOC_DAPM_PGA("Vibra1 Playback",
460                         SN95031_DRIVEREN, 4, 0, NULL, 0),
461         SND_SOC_DAPM_PGA("Vibra2 Playback",
462                         SN95031_DRIVEREN, 5, 0, NULL, 0),
463         SND_SOC_DAPM_PGA("Earpiece Playback",
464                         SN95031_DRIVEREN, 6, 0, NULL, 0),
465         SND_SOC_DAPM_PGA("Lineout Left Playback",
466                         SN95031_LOCTL, 0, 0, NULL, 0),
467         SND_SOC_DAPM_PGA("Lineout Right Playback",
468                         SN95031_LOCTL, 4, 0, NULL, 0),
469 
470         /* playback path filter enable */
471         SND_SOC_DAPM_PGA("Headset Left Filter",
472                         SN95031_HSEPRXCTRL, 4, 0, NULL, 0),
473         SND_SOC_DAPM_PGA("Headset Right Filter",
474                         SN95031_HSEPRXCTRL, 5, 0,  NULL, 0),
475         SND_SOC_DAPM_PGA("Speaker Left Filter",
476                         SN95031_IHFRXCTRL, 0, 0,  NULL, 0),
477         SND_SOC_DAPM_PGA("Speaker Right Filter",
478                         SN95031_IHFRXCTRL, 1, 0,  NULL, 0),
479 
480         /* DACs */
481         SND_SOC_DAPM_DAC("HSDAC Left", "Headset",
482                         SN95031_DACCONFIG, 0, 0),
483         SND_SOC_DAPM_DAC("HSDAC Right", "Headset",
484                         SN95031_DACCONFIG, 1, 0),
485         SND_SOC_DAPM_DAC("IHFDAC Left", "Speaker",
486                         SN95031_DACCONFIG, 2, 0),
487         SND_SOC_DAPM_DAC("IHFDAC Right", "Speaker",
488                         SN95031_DACCONFIG, 3, 0),
489         SND_SOC_DAPM_DAC("Vibra1 DAC", "Vibra1",
490                         SN95031_VIB1C5, 1, 0),
491         SND_SOC_DAPM_DAC("Vibra2 DAC", "Vibra2",
492                         SN95031_VIB2C5, 1, 0),
493 
494         /* capture widgets */
495         SND_SOC_DAPM_PGA("LineIn Enable Left", SN95031_MICAMP1,
496                                 7, 0, NULL, 0),
497         SND_SOC_DAPM_PGA("LineIn Enable Right", SN95031_MICAMP2,
498                                 7, 0, NULL, 0),
499 
500         SND_SOC_DAPM_PGA("MIC1 Enable", SN95031_MICAMP1, 0, 0, NULL, 0),
501         SND_SOC_DAPM_PGA("MIC2 Enable", SN95031_MICAMP2, 0, 0, NULL, 0),
502         SND_SOC_DAPM_PGA("TX1 Enable", SN95031_AUDIOTXEN, 2, 0, NULL, 0),
503         SND_SOC_DAPM_PGA("TX2 Enable", SN95031_AUDIOTXEN, 3, 0, NULL, 0),
504         SND_SOC_DAPM_PGA("TX3 Enable", SN95031_AUDIOTXEN, 4, 0, NULL, 0),
505         SND_SOC_DAPM_PGA("TX4 Enable", SN95031_AUDIOTXEN, 5, 0, NULL, 0),
506 
507         /* ADC have null stream as they will be turned ON by TX path */
508         SND_SOC_DAPM_ADC("ADC Left", NULL,
509                         SN95031_ADCCONFIG, 0, 0),
510         SND_SOC_DAPM_ADC("ADC Right", NULL,
511                         SN95031_ADCCONFIG, 2, 0),
512 
513         SND_SOC_DAPM_MUX("Mic_InputL Capture Route",
514                         SND_SOC_NOPM, 0, 0, &sn95031_micl_mux_control),
515         SND_SOC_DAPM_MUX("Mic_InputR Capture Route",
516                         SND_SOC_NOPM, 0, 0, &sn95031_micr_mux_control),
517 
518         SND_SOC_DAPM_MUX("Txpath1 Capture Route",
519                         SND_SOC_NOPM, 0, 0, &sn95031_input1_mux_control),
520         SND_SOC_DAPM_MUX("Txpath2 Capture Route",
521                         SND_SOC_NOPM, 0, 0, &sn95031_input2_mux_control),
522         SND_SOC_DAPM_MUX("Txpath3 Capture Route",
523                         SND_SOC_NOPM, 0, 0, &sn95031_input3_mux_control),
524         SND_SOC_DAPM_MUX("Txpath4 Capture Route",
525                         SND_SOC_NOPM, 0, 0, &sn95031_input4_mux_control),
526 
527 };
528 
529 static const struct snd_soc_dapm_route sn95031_audio_map[] = {
530         /* headset and earpiece map */
531         { "HPOUTL", NULL, "Headset Rail"},
532         { "HPOUTR", NULL, "Headset Rail"},
533         { "HPOUTL", NULL, "Headset Left Playback" },
534         { "HPOUTR", NULL, "Headset Right Playback" },
535         { "EPOUT", NULL, "Earpiece Playback" },
536         { "Headset Left Playback", NULL, "Headset Left Filter"},
537         { "Headset Right Playback", NULL, "Headset Right Filter"},
538         { "Earpiece Playback", NULL, "Headset Left Filter"},
539         { "Headset Left Filter", NULL, "HSDAC Left"},
540         { "Headset Right Filter", NULL, "HSDAC Right"},
541 
542         /* speaker map */
543         { "IHFOUTL", NULL, "Speaker Rail"},
544         { "IHFOUTR", NULL, "Speaker Rail"},
545         { "IHFOUTL", NULL, "Speaker Left Playback"},
546         { "IHFOUTR", NULL, "Speaker Right Playback"},
547         { "Speaker Left Playback", NULL, "Speaker Left Filter"},
548         { "Speaker Right Playback", NULL, "Speaker Right Filter"},
549         { "Speaker Left Filter", NULL, "IHFDAC Left"},
550         { "Speaker Right Filter", NULL, "IHFDAC Right"},
551 
552         /* vibra map */
553         { "VIB1OUT", NULL, "Vibra1 Playback"},
554         { "Vibra1 Playback", NULL, "Vibra1 DAC"},
555 
556         { "VIB2OUT", NULL, "Vibra2 Playback"},
557         { "Vibra2 Playback", NULL, "Vibra2 DAC"},
558 
559         /* lineout */
560         { "LINEOUTL", NULL, "Lineout Left Playback"},
561         { "LINEOUTR", NULL, "Lineout Right Playback"},
562         { "Lineout Left Playback", NULL, "Headset Left Filter"},
563         { "Lineout Left Playback", NULL, "Speaker Left Filter"},
564         { "Lineout Left Playback", NULL, "Vibra1 DAC"},
565         { "Lineout Right Playback", NULL, "Headset Right Filter"},
566         { "Lineout Right Playback", NULL, "Speaker Right Filter"},
567         { "Lineout Right Playback", NULL, "Vibra2 DAC"},
568 
569         /* Headset (AMIC1) mic */
570         { "AMIC1Bias", NULL, "AMIC1"},
571         { "MIC1 Enable", NULL, "AMIC1Bias"},
572         { "Mic_InputL Capture Route", "AMIC", "MIC1 Enable"},
573 
574         /* AMIC2 */
575         { "AMIC2Bias", NULL, "AMIC2"},
576         { "MIC2 Enable", NULL, "AMIC2Bias"},
577         { "Mic_InputR Capture Route", "AMIC", "MIC2 Enable"},
578 
579 
580         /* Linein */
581         { "LineIn Enable Left", NULL, "LINEINL"},
582         { "LineIn Enable Right", NULL, "LINEINR"},
583         { "Mic_InputL Capture Route", "LineIn", "LineIn Enable Left"},
584         { "Mic_InputR Capture Route", "LineIn", "LineIn Enable Right"},
585 
586         /* ADC connection */
587         { "ADC Left", NULL, "Mic_InputL Capture Route"},
588         { "ADC Right", NULL, "Mic_InputR Capture Route"},
589 
590         /*DMIC connections */
591         { "DMIC1", NULL, "DMIC12supply"},
592         { "DMIC2", NULL, "DMIC12supply"},
593         { "DMIC3", NULL, "DMIC34supply"},
594         { "DMIC4", NULL, "DMIC34supply"},
595         { "DMIC5", NULL, "DMIC56supply"},
596         { "DMIC6", NULL, "DMIC56supply"},
597 
598         { "DMIC12Bias", NULL, "DMIC1"},
599         { "DMIC12Bias", NULL, "DMIC2"},
600         { "DMIC34Bias", NULL, "DMIC3"},
601         { "DMIC34Bias", NULL, "DMIC4"},
602         { "DMIC56Bias", NULL, "DMIC5"},
603         { "DMIC56Bias", NULL, "DMIC6"},
604 
605         /*TX path inputs*/
606         { "Txpath1 Capture Route", "ADC Left", "ADC Left"},
607         { "Txpath2 Capture Route", "ADC Left", "ADC Left"},
608         { "Txpath3 Capture Route", "ADC Left", "ADC Left"},
609         { "Txpath4 Capture Route", "ADC Left", "ADC Left"},
610         { "Txpath1 Capture Route", "ADC Right", "ADC Right"},
611         { "Txpath2 Capture Route", "ADC Right", "ADC Right"},
612         { "Txpath3 Capture Route", "ADC Right", "ADC Right"},
613         { "Txpath4 Capture Route", "ADC Right", "ADC Right"},
614         { "Txpath1 Capture Route", "DMIC1", "DMIC1"},
615         { "Txpath2 Capture Route", "DMIC1", "DMIC1"},
616         { "Txpath3 Capture Route", "DMIC1", "DMIC1"},
617         { "Txpath4 Capture Route", "DMIC1", "DMIC1"},
618         { "Txpath1 Capture Route", "DMIC2", "DMIC2"},
619         { "Txpath2 Capture Route", "DMIC2", "DMIC2"},
620         { "Txpath3 Capture Route", "DMIC2", "DMIC2"},
621         { "Txpath4 Capture Route", "DMIC2", "DMIC2"},
622         { "Txpath1 Capture Route", "DMIC3", "DMIC3"},
623         { "Txpath2 Capture Route", "DMIC3", "DMIC3"},
624         { "Txpath3 Capture Route", "DMIC3", "DMIC3"},
625         { "Txpath4 Capture Route", "DMIC3", "DMIC3"},
626         { "Txpath1 Capture Route", "DMIC4", "DMIC4"},
627         { "Txpath2 Capture Route", "DMIC4", "DMIC4"},
628         { "Txpath3 Capture Route", "DMIC4", "DMIC4"},
629         { "Txpath4 Capture Route", "DMIC4", "DMIC4"},
630         { "Txpath1 Capture Route", "DMIC5", "DMIC5"},
631         { "Txpath2 Capture Route", "DMIC5", "DMIC5"},
632         { "Txpath3 Capture Route", "DMIC5", "DMIC5"},
633         { "Txpath4 Capture Route", "DMIC5", "DMIC5"},
634         { "Txpath1 Capture Route", "DMIC6", "DMIC6"},
635         { "Txpath2 Capture Route", "DMIC6", "DMIC6"},
636         { "Txpath3 Capture Route", "DMIC6", "DMIC6"},
637         { "Txpath4 Capture Route", "DMIC6", "DMIC6"},
638 
639         /* tx path */
640         { "TX1 Enable", NULL, "Txpath1 Capture Route"},
641         { "TX2 Enable", NULL, "Txpath2 Capture Route"},
642         { "TX3 Enable", NULL, "Txpath3 Capture Route"},
643         { "TX4 Enable", NULL, "Txpath4 Capture Route"},
644         { "PCM_Out", NULL, "TX1 Enable"},
645         { "PCM_Out", NULL, "TX2 Enable"},
646         { "PCM_Out", NULL, "TX3 Enable"},
647         { "PCM_Out", NULL, "TX4 Enable"},
648 
649 };
650 
651 /* speaker and headset mutes, for audio pops and clicks */
652 static int sn95031_pcm_hs_mute(struct snd_soc_dai *dai, int mute)
653 {
654         snd_soc_update_bits(dai->codec,
655                         SN95031_HSLVOLCTRL, BIT(7), (!mute << 7));
656         snd_soc_update_bits(dai->codec,
657                         SN95031_HSRVOLCTRL, BIT(7), (!mute << 7));
658         return 0;
659 }
660 
661 static int sn95031_pcm_spkr_mute(struct snd_soc_dai *dai, int mute)
662 {
663         snd_soc_update_bits(dai->codec,
664                         SN95031_IHFLVOLCTRL, BIT(7), (!mute << 7));
665         snd_soc_update_bits(dai->codec,
666                         SN95031_IHFRVOLCTRL, BIT(7), (!mute << 7));
667         return 0;
668 }
669 
670 static int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
671                 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
672 {
673         unsigned int format, rate;
674 
675         switch (params_width(params)) {
676         case 16:
677                 format = BIT(4)|BIT(5);
678                 break;
679 
680         case 24:
681                 format = 0;
682                 break;
683         default:
684                 return -EINVAL;
685         }
686         snd_soc_update_bits(dai->codec, SN95031_PCM2C2,
687                         BIT(4)|BIT(5), format);
688 
689         switch (params_rate(params)) {
690         case 48000:
691                 pr_debug("RATE_48000\n");
692                 rate = 0;
693                 break;
694 
695         case 44100:
696                 pr_debug("RATE_44100\n");
697                 rate = BIT(7);
698                 break;
699 
700         default:
701                 pr_err("ERR rate %d\n", params_rate(params));
702                 return -EINVAL;
703         }
704         snd_soc_update_bits(dai->codec, SN95031_PCM1C1, BIT(7), rate);
705 
706         return 0;
707 }
708 
709 /* Codec DAI section */
710 static const struct snd_soc_dai_ops sn95031_headset_dai_ops = {
711         .digital_mute   = sn95031_pcm_hs_mute,
712         .hw_params      = sn95031_pcm_hw_params,
713 };
714 
715 static const struct snd_soc_dai_ops sn95031_speaker_dai_ops = {
716         .digital_mute   = sn95031_pcm_spkr_mute,
717         .hw_params      = sn95031_pcm_hw_params,
718 };
719 
720 static const struct snd_soc_dai_ops sn95031_vib1_dai_ops = {
721         .hw_params      = sn95031_pcm_hw_params,
722 };
723 
724 static const struct snd_soc_dai_ops sn95031_vib2_dai_ops = {
725         .hw_params      = sn95031_pcm_hw_params,
726 };
727 
728 static struct snd_soc_dai_driver sn95031_dais[] = {
729 {
730         .name = "SN95031 Headset",
731         .playback = {
732                 .stream_name = "Headset",
733                 .channels_min = 2,
734                 .channels_max = 2,
735                 .rates = SN95031_RATES,
736                 .formats = SN95031_FORMATS,
737         },
738         .capture = {
739                 .stream_name = "Capture",
740                 .channels_min = 1,
741                 .channels_max = 5,
742                 .rates = SN95031_RATES,
743                 .formats = SN95031_FORMATS,
744         },
745         .ops = &sn95031_headset_dai_ops,
746 },
747 {       .name = "SN95031 Speaker",
748         .playback = {
749                 .stream_name = "Speaker",
750                 .channels_min = 2,
751                 .channels_max = 2,
752                 .rates = SN95031_RATES,
753                 .formats = SN95031_FORMATS,
754         },
755         .ops = &sn95031_speaker_dai_ops,
756 },
757 {       .name = "SN95031 Vibra1",
758         .playback = {
759                 .stream_name = "Vibra1",
760                 .channels_min = 1,
761                 .channels_max = 1,
762                 .rates = SN95031_RATES,
763                 .formats = SN95031_FORMATS,
764         },
765         .ops = &sn95031_vib1_dai_ops,
766 },
767 {       .name = "SN95031 Vibra2",
768         .playback = {
769                 .stream_name = "Vibra2",
770                 .channels_min = 1,
771                 .channels_max = 1,
772                 .rates = SN95031_RATES,
773                 .formats = SN95031_FORMATS,
774         },
775         .ops = &sn95031_vib2_dai_ops,
776 },
777 };
778 
779 static inline void sn95031_disable_jack_btn(struct snd_soc_codec *codec)
780 {
781         snd_soc_write(codec, SN95031_BTNCTRL2, 0x00);
782 }
783 
784 static inline void sn95031_enable_jack_btn(struct snd_soc_codec *codec)
785 {
786         snd_soc_write(codec, SN95031_BTNCTRL1, 0x77);
787         snd_soc_write(codec, SN95031_BTNCTRL2, 0x01);
788 }
789 
790 static int sn95031_get_headset_state(struct snd_soc_codec *codec,
791         struct snd_soc_jack *mfld_jack)
792 {
793         int micbias = sn95031_get_mic_bias(codec);
794 
795         int jack_type = snd_soc_jack_get_type(mfld_jack, micbias);
796 
797         pr_debug("jack type detected = %d\n", jack_type);
798         if (jack_type == SND_JACK_HEADSET)
799                 sn95031_enable_jack_btn(codec);
800         return jack_type;
801 }
802 
803 void sn95031_jack_detection(struct snd_soc_codec *codec,
804         struct mfld_jack_data *jack_data)
805 {
806         unsigned int status;
807         unsigned int mask = SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_HEADSET;
808 
809         pr_debug("interrupt id read in sram = 0x%x\n", jack_data->intr_id);
810         if (jack_data->intr_id & 0x1) {
811                 pr_debug("short_push detected\n");
812                 status = SND_JACK_HEADSET | SND_JACK_BTN_0;
813         } else if (jack_data->intr_id & 0x2) {
814                 pr_debug("long_push detected\n");
815                 status = SND_JACK_HEADSET | SND_JACK_BTN_1;
816         } else if (jack_data->intr_id & 0x4) {
817                 pr_debug("headset or headphones inserted\n");
818                 status = sn95031_get_headset_state(codec, jack_data->mfld_jack);
819         } else if (jack_data->intr_id & 0x8) {
820                 pr_debug("headset or headphones removed\n");
821                 status = 0;
822                 sn95031_disable_jack_btn(codec);
823         } else {
824                 pr_err("unidentified interrupt\n");
825                 return;
826         }
827 
828         snd_soc_jack_report(jack_data->mfld_jack, status, mask);
829         /*button pressed and released so we send explicit button release */
830         if ((status & SND_JACK_BTN_0) | (status & SND_JACK_BTN_1))
831                 snd_soc_jack_report(jack_data->mfld_jack,
832                                 SND_JACK_HEADSET, mask);
833 }
834 EXPORT_SYMBOL_GPL(sn95031_jack_detection);
835 
836 /* codec registration */
837 static int sn95031_codec_probe(struct snd_soc_codec *codec)
838 {
839         pr_debug("codec_probe called\n");
840 
841         /* PCM interface config
842          * This sets the pcm rx slot conguration to max 6 slots
843          * for max 4 dais (2 stereo and 2 mono)
844          */
845         snd_soc_write(codec, SN95031_PCM2RXSLOT01, 0x10);
846         snd_soc_write(codec, SN95031_PCM2RXSLOT23, 0x32);
847         snd_soc_write(codec, SN95031_PCM2RXSLOT45, 0x54);
848         snd_soc_write(codec, SN95031_PCM2TXSLOT01, 0x10);
849         snd_soc_write(codec, SN95031_PCM2TXSLOT23, 0x32);
850         /* pcm port setting
851          * This sets the pcm port to slave and clock at 19.2Mhz which
852          * can support 6slots, sampling rate set per stream in hw-params
853          */
854         snd_soc_write(codec, SN95031_PCM1C1, 0x00);
855         snd_soc_write(codec, SN95031_PCM2C1, 0x01);
856         snd_soc_write(codec, SN95031_PCM2C2, 0x0A);
857         snd_soc_write(codec, SN95031_HSMIXER, BIT(0)|BIT(4));
858         /* vendor vibra workround, the vibras are muted by
859          * custom register so unmute them
860          */
861         snd_soc_write(codec, SN95031_SSR5, 0x80);
862         snd_soc_write(codec, SN95031_SSR6, 0x80);
863         snd_soc_write(codec, SN95031_VIB1C5, 0x00);
864         snd_soc_write(codec, SN95031_VIB2C5, 0x00);
865         /* configure vibras for pcm port */
866         snd_soc_write(codec, SN95031_VIB1C3, 0x00);
867         snd_soc_write(codec, SN95031_VIB2C3, 0x00);
868 
869         /* soft mute ramp time */
870         snd_soc_write(codec, SN95031_SOFTMUTE, 0x3);
871         /* fix the initial volume at 1dB,
872          * default in +9dB,
873          * 1dB give optimal swing on DAC, amps
874          */
875         snd_soc_write(codec, SN95031_HSLVOLCTRL, 0x08);
876         snd_soc_write(codec, SN95031_HSRVOLCTRL, 0x08);
877         snd_soc_write(codec, SN95031_IHFLVOLCTRL, 0x08);
878         snd_soc_write(codec, SN95031_IHFRVOLCTRL, 0x08);
879         /* dac mode and lineout workaround */
880         snd_soc_write(codec, SN95031_SSR2, 0x10);
881         snd_soc_write(codec, SN95031_SSR3, 0x40);
882 
883         return 0;
884 }
885 
886 static struct snd_soc_codec_driver sn95031_codec = {
887         .probe          = sn95031_codec_probe,
888         .set_bias_level = sn95031_set_vaud_bias,
889         .idle_bias_off  = true,
890 
891         .controls       = sn95031_snd_controls,
892         .num_controls   = ARRAY_SIZE(sn95031_snd_controls),
893         .dapm_widgets   = sn95031_dapm_widgets,
894         .num_dapm_widgets       = ARRAY_SIZE(sn95031_dapm_widgets),
895         .dapm_routes    = sn95031_audio_map,
896         .num_dapm_routes        = ARRAY_SIZE(sn95031_audio_map),
897 };
898 
899 static int sn95031_device_probe(struct platform_device *pdev)
900 {
901         struct regmap *regmap;
902 
903         pr_debug("codec device probe called for %s\n", dev_name(&pdev->dev));
904 
905         regmap = devm_regmap_init(&pdev->dev, NULL, NULL, &sn95031_regmap);
906         if (IS_ERR(regmap))
907                 return PTR_ERR(regmap);
908 
909         return snd_soc_register_codec(&pdev->dev, &sn95031_codec,
910                         sn95031_dais, ARRAY_SIZE(sn95031_dais));
911 }
912 
913 static int sn95031_device_remove(struct platform_device *pdev)
914 {
915         pr_debug("codec device remove called\n");
916         snd_soc_unregister_codec(&pdev->dev);
917         return 0;
918 }
919 
920 static struct platform_driver sn95031_codec_driver = {
921         .driver         = {
922                 .name           = "sn95031",
923         },
924         .probe          = sn95031_device_probe,
925         .remove         = sn95031_device_remove,
926 };
927 
928 module_platform_driver(sn95031_codec_driver);
929 
930 MODULE_DESCRIPTION("ASoC TI SN95031 codec driver");
931 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
932 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
933 MODULE_LICENSE("GPL v2");
934 MODULE_ALIAS("platform:sn95031");
935 

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