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Linux/sound/soc/codecs/ssm2602.c

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  1 /*
  2  * File:         sound/soc/codecs/ssm2602.c
  3  * Author:       Cliff Cai <Cliff.Cai@analog.com>
  4  *
  5  * Created:      Tue June 06 2008
  6  * Description:  Driver for ssm2602 sound chip
  7  *
  8  * Modified:
  9  *               Copyright 2008 Analog Devices Inc.
 10  *
 11  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 12  *
 13  * This program is free software; you can redistribute it and/or modify
 14  * it under the terms of the GNU General Public License as published by
 15  * the Free Software Foundation; either version 2 of the License, or
 16  * (at your option) any later version.
 17  *
 18  * This program is distributed in the hope that it will be useful,
 19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 21  * GNU General Public License for more details.
 22  *
 23  * You should have received a copy of the GNU General Public License
 24  * along with this program; if not, see the file COPYING, or write
 25  * to the Free Software Foundation, Inc.,
 26  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 27  */
 28 
 29 #include <linux/module.h>
 30 #include <linux/regmap.h>
 31 #include <linux/slab.h>
 32 
 33 #include <sound/pcm.h>
 34 #include <sound/pcm_params.h>
 35 #include <sound/soc.h>
 36 #include <sound/tlv.h>
 37 
 38 #include "ssm2602.h"
 39 
 40 /* codec private data */
 41 struct ssm2602_priv {
 42         unsigned int sysclk;
 43         const struct snd_pcm_hw_constraint_list *sysclk_constraints;
 44 
 45         struct regmap *regmap;
 46 
 47         enum ssm2602_type type;
 48         unsigned int clk_out_pwr;
 49 };
 50 
 51 /*
 52  * ssm2602 register cache
 53  * We can't read the ssm2602 register space when we are
 54  * using 2 wire for device control, so we cache them instead.
 55  * There is no point in caching the reset register
 56  */
 57 static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
 58         0x0097, 0x0097, 0x0079, 0x0079,
 59         0x000a, 0x0008, 0x009f, 0x000a,
 60         0x0000, 0x0000
 61 };
 62 
 63 
 64 /*Appending several "None"s just for OSS mixer use*/
 65 static const char *ssm2602_input_select[] = {
 66         "Line", "Mic",
 67 };
 68 
 69 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
 70 
 71 static const struct soc_enum ssm2602_enum[] = {
 72         SOC_ENUM_SINGLE(SSM2602_APANA, 2, ARRAY_SIZE(ssm2602_input_select),
 73                         ssm2602_input_select),
 74         SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, ARRAY_SIZE(ssm2602_deemph),
 75                         ssm2602_deemph),
 76 };
 77 
 78 static const unsigned int ssm260x_outmix_tlv[] = {
 79         TLV_DB_RANGE_HEAD(2),
 80         0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
 81         48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0),
 82 };
 83 
 84 static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
 85 static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
 86 
 87 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
 88 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
 89         ssm260x_inpga_tlv),
 90 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
 91 
 92 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
 93 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
 94 
 95 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
 96 };
 97 
 98 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
 99 SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
100         0, 127, 0, ssm260x_outmix_tlv),
101 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
102         7, 1, 0),
103 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
104         ssm260x_sidetone_tlv),
105 
106 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
107 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
108 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
109 };
110 
111 /* Output Mixer */
112 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
113 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
114 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
115 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
116 };
117 
118 /* Input mux */
119 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
120 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
121 
122 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
123 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
124 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
125 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
126 
127 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
128 
129 SND_SOC_DAPM_OUTPUT("LOUT"),
130 SND_SOC_DAPM_OUTPUT("ROUT"),
131 SND_SOC_DAPM_INPUT("RLINEIN"),
132 SND_SOC_DAPM_INPUT("LLINEIN"),
133 };
134 
135 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
136 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
137         ssm260x_output_mixer_controls,
138         ARRAY_SIZE(ssm260x_output_mixer_controls)),
139 
140 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
141 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
142 
143 SND_SOC_DAPM_OUTPUT("LHPOUT"),
144 SND_SOC_DAPM_OUTPUT("RHPOUT"),
145 SND_SOC_DAPM_INPUT("MICIN"),
146 };
147 
148 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
149 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
150         ssm260x_output_mixer_controls,
151         ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
152 };
153 
154 static const struct snd_soc_dapm_route ssm260x_routes[] = {
155         {"DAC", NULL, "Digital Core Power"},
156         {"ADC", NULL, "Digital Core Power"},
157 
158         {"Output Mixer", "Line Bypass Switch", "Line Input"},
159         {"Output Mixer", "HiFi Playback Switch", "DAC"},
160 
161         {"ROUT", NULL, "Output Mixer"},
162         {"LOUT", NULL, "Output Mixer"},
163 
164         {"Line Input", NULL, "LLINEIN"},
165         {"Line Input", NULL, "RLINEIN"},
166 };
167 
168 static const struct snd_soc_dapm_route ssm2602_routes[] = {
169         {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
170 
171         {"RHPOUT", NULL, "Output Mixer"},
172         {"LHPOUT", NULL, "Output Mixer"},
173 
174         {"Input Mux", "Line", "Line Input"},
175         {"Input Mux", "Mic", "Mic Bias"},
176         {"ADC", NULL, "Input Mux"},
177 
178         {"Mic Bias", NULL, "MICIN"},
179 };
180 
181 static const struct snd_soc_dapm_route ssm2604_routes[] = {
182         {"ADC", NULL, "Line Input"},
183 };
184 
185 static const unsigned int ssm2602_rates_12288000[] = {
186         8000, 16000, 32000, 48000, 96000,
187 };
188 
189 static const struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
190         .list = ssm2602_rates_12288000,
191         .count = ARRAY_SIZE(ssm2602_rates_12288000),
192 };
193 
194 static const unsigned int ssm2602_rates_11289600[] = {
195         8000, 11025, 22050, 44100, 88200,
196 };
197 
198 static const struct snd_pcm_hw_constraint_list ssm2602_constraints_11289600 = {
199         .list = ssm2602_rates_11289600,
200         .count = ARRAY_SIZE(ssm2602_rates_11289600),
201 };
202 
203 struct ssm2602_coeff {
204         u32 mclk;
205         u32 rate;
206         u8 srate;
207 };
208 
209 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
210 
211 /* codec mclk clock coefficients */
212 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
213         /* 48k */
214         {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
215         {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
216         {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
217 
218         /* 32k */
219         {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
220         {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
221         {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
222 
223         /* 16k */
224         {12288000, 16000, SSM2602_COEFF_SRATE(0x5, 0x0, 0x0)},
225         {18432000, 16000, SSM2602_COEFF_SRATE(0x5, 0x1, 0x0)},
226         {12000000, 16000, SSM2602_COEFF_SRATE(0xa, 0x0, 0x1)},
227 
228         /* 8k */
229         {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
230         {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
231         {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
232         {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
233         {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
234 
235         /* 96k */
236         {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
237         {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
238         {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
239 
240         /* 11.025k */
241         {11289600, 11025, SSM2602_COEFF_SRATE(0xc, 0x0, 0x0)},
242         {16934400, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x0)},
243         {12000000, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x1)},
244 
245         /* 22.05k */
246         {11289600, 22050, SSM2602_COEFF_SRATE(0xd, 0x0, 0x0)},
247         {16934400, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x0)},
248         {12000000, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x1)},
249 
250         /* 44.1k */
251         {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
252         {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
253         {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
254 
255         /* 88.2k */
256         {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
257         {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
258         {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
259 };
260 
261 static inline int ssm2602_get_coeff(int mclk, int rate)
262 {
263         int i;
264 
265         for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
266                 if (ssm2602_coeff_table[i].rate == rate &&
267                         ssm2602_coeff_table[i].mclk == mclk)
268                         return ssm2602_coeff_table[i].srate;
269         }
270         return -EINVAL;
271 }
272 
273 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
274         struct snd_pcm_hw_params *params,
275         struct snd_soc_dai *dai)
276 {
277         struct snd_soc_codec *codec = dai->codec;
278         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
279         int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
280         unsigned int iface;
281 
282         if (srate < 0)
283                 return srate;
284 
285         regmap_write(ssm2602->regmap, SSM2602_SRATE, srate);
286 
287         /* bit size */
288         switch (params_width(params)) {
289         case 16:
290                 iface = 0x0;
291                 break;
292         case 20:
293                 iface = 0x4;
294                 break;
295         case 24:
296                 iface = 0x8;
297                 break;
298         case 32:
299                 iface = 0xc;
300                 break;
301         default:
302                 return -EINVAL;
303         }
304         regmap_update_bits(ssm2602->regmap, SSM2602_IFACE,
305                 IFACE_AUDIO_DATA_LEN, iface);
306         return 0;
307 }
308 
309 static int ssm2602_startup(struct snd_pcm_substream *substream,
310                            struct snd_soc_dai *dai)
311 {
312         struct snd_soc_codec *codec = dai->codec;
313         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
314 
315         if (ssm2602->sysclk_constraints) {
316                 snd_pcm_hw_constraint_list(substream->runtime, 0,
317                                    SNDRV_PCM_HW_PARAM_RATE,
318                                    ssm2602->sysclk_constraints);
319         }
320 
321         return 0;
322 }
323 
324 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
325 {
326         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(dai->codec);
327 
328         if (mute)
329                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
330                                     APDIGI_ENABLE_DAC_MUTE,
331                                     APDIGI_ENABLE_DAC_MUTE);
332         else
333                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
334                                     APDIGI_ENABLE_DAC_MUTE, 0);
335         return 0;
336 }
337 
338 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
339                 int clk_id, unsigned int freq, int dir)
340 {
341         struct snd_soc_codec *codec = codec_dai->codec;
342         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
343 
344         if (dir == SND_SOC_CLOCK_IN) {
345                 if (clk_id != SSM2602_SYSCLK)
346                         return -EINVAL;
347 
348                 switch (freq) {
349                 case 12288000:
350                 case 18432000:
351                         ssm2602->sysclk_constraints = &ssm2602_constraints_12288000;
352                         break;
353                 case 11289600:
354                 case 16934400:
355                         ssm2602->sysclk_constraints = &ssm2602_constraints_11289600;
356                         break;
357                 case 12000000:
358                         ssm2602->sysclk_constraints = NULL;
359                         break;
360                 default:
361                         return -EINVAL;
362                 }
363                 ssm2602->sysclk = freq;
364         } else {
365                 unsigned int mask;
366 
367                 switch (clk_id) {
368                 case SSM2602_CLK_CLKOUT:
369                         mask = PWR_CLK_OUT_PDN;
370                         break;
371                 case SSM2602_CLK_XTO:
372                         mask = PWR_OSC_PDN;
373                         break;
374                 default:
375                         return -EINVAL;
376                 }
377 
378                 if (freq == 0)
379                         ssm2602->clk_out_pwr |= mask;
380                 else
381                         ssm2602->clk_out_pwr &= ~mask;
382 
383                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
384                         PWR_CLK_OUT_PDN | PWR_OSC_PDN, ssm2602->clk_out_pwr);
385         }
386 
387         return 0;
388 }
389 
390 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
391                 unsigned int fmt)
392 {
393         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec_dai->codec);
394         unsigned int iface = 0;
395 
396         /* set master/slave audio interface */
397         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
398         case SND_SOC_DAIFMT_CBM_CFM:
399                 iface |= 0x0040;
400                 break;
401         case SND_SOC_DAIFMT_CBS_CFS:
402                 break;
403         default:
404                 return -EINVAL;
405         }
406 
407         /* interface format */
408         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
409         case SND_SOC_DAIFMT_I2S:
410                 iface |= 0x0002;
411                 break;
412         case SND_SOC_DAIFMT_RIGHT_J:
413                 break;
414         case SND_SOC_DAIFMT_LEFT_J:
415                 iface |= 0x0001;
416                 break;
417         case SND_SOC_DAIFMT_DSP_A:
418                 iface |= 0x0013;
419                 break;
420         case SND_SOC_DAIFMT_DSP_B:
421                 iface |= 0x0003;
422                 break;
423         default:
424                 return -EINVAL;
425         }
426 
427         /* clock inversion */
428         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
429         case SND_SOC_DAIFMT_NB_NF:
430                 break;
431         case SND_SOC_DAIFMT_IB_IF:
432                 iface |= 0x0090;
433                 break;
434         case SND_SOC_DAIFMT_IB_NF:
435                 iface |= 0x0080;
436                 break;
437         case SND_SOC_DAIFMT_NB_IF:
438                 iface |= 0x0010;
439                 break;
440         default:
441                 return -EINVAL;
442         }
443 
444         /* set iface */
445         regmap_write(ssm2602->regmap, SSM2602_IFACE, iface);
446         return 0;
447 }
448 
449 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
450                                  enum snd_soc_bias_level level)
451 {
452         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
453 
454         switch (level) {
455         case SND_SOC_BIAS_ON:
456                 /* vref/mid on, osc and clkout on if enabled */
457                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
458                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
459                         ssm2602->clk_out_pwr);
460                 break;
461         case SND_SOC_BIAS_PREPARE:
462                 break;
463         case SND_SOC_BIAS_STANDBY:
464                 /* everything off except vref/vmid, */
465                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
466                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
467                         PWR_CLK_OUT_PDN | PWR_OSC_PDN);
468                 break;
469         case SND_SOC_BIAS_OFF:
470                 /* everything off */
471                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
472                         PWR_POWER_OFF, PWR_POWER_OFF);
473                 break;
474 
475         }
476         codec->dapm.bias_level = level;
477         return 0;
478 }
479 
480 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
481                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
482                 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
483                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
484                 SNDRV_PCM_RATE_96000)
485 
486 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
487                 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
488 
489 static const struct snd_soc_dai_ops ssm2602_dai_ops = {
490         .startup        = ssm2602_startup,
491         .hw_params      = ssm2602_hw_params,
492         .digital_mute   = ssm2602_mute,
493         .set_sysclk     = ssm2602_set_dai_sysclk,
494         .set_fmt        = ssm2602_set_dai_fmt,
495 };
496 
497 static struct snd_soc_dai_driver ssm2602_dai = {
498         .name = "ssm2602-hifi",
499         .playback = {
500                 .stream_name = "Playback",
501                 .channels_min = 2,
502                 .channels_max = 2,
503                 .rates = SSM2602_RATES,
504                 .formats = SSM2602_FORMATS,},
505         .capture = {
506                 .stream_name = "Capture",
507                 .channels_min = 2,
508                 .channels_max = 2,
509                 .rates = SSM2602_RATES,
510                 .formats = SSM2602_FORMATS,},
511         .ops = &ssm2602_dai_ops,
512         .symmetric_rates = 1,
513         .symmetric_samplebits = 1,
514 };
515 
516 static int ssm2602_resume(struct snd_soc_codec *codec)
517 {
518         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
519 
520         regcache_sync(ssm2602->regmap);
521 
522         return 0;
523 }
524 
525 static int ssm2602_codec_probe(struct snd_soc_codec *codec)
526 {
527         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
528         struct snd_soc_dapm_context *dapm = &codec->dapm;
529         int ret;
530 
531         regmap_update_bits(ssm2602->regmap, SSM2602_LOUT1V,
532                             LOUT1V_LRHP_BOTH, LOUT1V_LRHP_BOTH);
533         regmap_update_bits(ssm2602->regmap, SSM2602_ROUT1V,
534                             ROUT1V_RLHP_BOTH, ROUT1V_RLHP_BOTH);
535 
536         ret = snd_soc_add_codec_controls(codec, ssm2602_snd_controls,
537                         ARRAY_SIZE(ssm2602_snd_controls));
538         if (ret)
539                 return ret;
540 
541         ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
542                         ARRAY_SIZE(ssm2602_dapm_widgets));
543         if (ret)
544                 return ret;
545 
546         return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
547                         ARRAY_SIZE(ssm2602_routes));
548 }
549 
550 static int ssm2604_codec_probe(struct snd_soc_codec *codec)
551 {
552         struct snd_soc_dapm_context *dapm = &codec->dapm;
553         int ret;
554 
555         ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
556                         ARRAY_SIZE(ssm2604_dapm_widgets));
557         if (ret)
558                 return ret;
559 
560         return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
561                         ARRAY_SIZE(ssm2604_routes));
562 }
563 
564 static int ssm260x_codec_probe(struct snd_soc_codec *codec)
565 {
566         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
567         int ret;
568 
569         ret = regmap_write(ssm2602->regmap, SSM2602_RESET, 0);
570         if (ret < 0) {
571                 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
572                 return ret;
573         }
574 
575         /* set the update bits */
576         regmap_update_bits(ssm2602->regmap, SSM2602_LINVOL,
577                             LINVOL_LRIN_BOTH, LINVOL_LRIN_BOTH);
578         regmap_update_bits(ssm2602->regmap, SSM2602_RINVOL,
579                             RINVOL_RLIN_BOTH, RINVOL_RLIN_BOTH);
580         /*select Line in as default input*/
581         regmap_write(ssm2602->regmap, SSM2602_APANA, APANA_SELECT_DAC |
582                         APANA_ENABLE_MIC_BOOST);
583 
584         switch (ssm2602->type) {
585         case SSM2602:
586                 ret = ssm2602_codec_probe(codec);
587                 break;
588         case SSM2604:
589                 ret = ssm2604_codec_probe(codec);
590                 break;
591         }
592 
593         return ret;
594 }
595 
596 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
597         .probe =        ssm260x_codec_probe,
598         .resume =       ssm2602_resume,
599         .set_bias_level = ssm2602_set_bias_level,
600         .suspend_bias_off = true,
601 
602         .controls = ssm260x_snd_controls,
603         .num_controls = ARRAY_SIZE(ssm260x_snd_controls),
604         .dapm_widgets = ssm260x_dapm_widgets,
605         .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
606         .dapm_routes = ssm260x_routes,
607         .num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
608 };
609 
610 static bool ssm2602_register_volatile(struct device *dev, unsigned int reg)
611 {
612         return reg == SSM2602_RESET;
613 }
614 
615 const struct regmap_config ssm2602_regmap_config = {
616         .val_bits = 9,
617         .reg_bits = 7,
618 
619         .max_register = SSM2602_RESET,
620         .volatile_reg = ssm2602_register_volatile,
621 
622         .cache_type = REGCACHE_RBTREE,
623         .reg_defaults_raw = ssm2602_reg,
624         .num_reg_defaults_raw = ARRAY_SIZE(ssm2602_reg),
625 };
626 EXPORT_SYMBOL_GPL(ssm2602_regmap_config);
627 
628 int ssm2602_probe(struct device *dev, enum ssm2602_type type,
629         struct regmap *regmap)
630 {
631         struct ssm2602_priv *ssm2602;
632 
633         if (IS_ERR(regmap))
634                 return PTR_ERR(regmap);
635 
636         ssm2602 = devm_kzalloc(dev, sizeof(*ssm2602), GFP_KERNEL);
637         if (ssm2602 == NULL)
638                 return -ENOMEM;
639 
640         dev_set_drvdata(dev, ssm2602);
641         ssm2602->type = type;
642         ssm2602->regmap = regmap;
643 
644         return snd_soc_register_codec(dev, &soc_codec_dev_ssm2602,
645                 &ssm2602_dai, 1);
646 }
647 EXPORT_SYMBOL_GPL(ssm2602_probe);
648 
649 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
650 MODULE_AUTHOR("Cliff Cai");
651 MODULE_LICENSE("GPL");
652 

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