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TOMOYO Linux Cross Reference
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 DECLARE_TLV_DB_RANGE(ssm260x_outmix_tlv,
 79         0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
 80         48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0)
 81 );
 82 
 83 static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
 84 static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
 85 
 86 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
 87 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
 88         ssm260x_inpga_tlv),
 89 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
 90 
 91 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
 92 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
 93 
 94 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
 95 };
 96 
 97 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
 98 SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
 99         0, 127, 0, ssm260x_outmix_tlv),
100 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
101         7, 1, 0),
102 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
103         ssm260x_sidetone_tlv),
104 
105 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
106 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
107 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
108 };
109 
110 /* Output Mixer */
111 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
112 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
113 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
114 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
115 };
116 
117 /* Input mux */
118 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
119 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
120 
121 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
122 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
123 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
124 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
125 
126 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
127 
128 SND_SOC_DAPM_OUTPUT("LOUT"),
129 SND_SOC_DAPM_OUTPUT("ROUT"),
130 SND_SOC_DAPM_INPUT("RLINEIN"),
131 SND_SOC_DAPM_INPUT("LLINEIN"),
132 };
133 
134 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
135 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
136         ssm260x_output_mixer_controls,
137         ARRAY_SIZE(ssm260x_output_mixer_controls)),
138 
139 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
140 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
141 
142 SND_SOC_DAPM_OUTPUT("LHPOUT"),
143 SND_SOC_DAPM_OUTPUT("RHPOUT"),
144 SND_SOC_DAPM_INPUT("MICIN"),
145 };
146 
147 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
148 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
149         ssm260x_output_mixer_controls,
150         ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
151 };
152 
153 static const struct snd_soc_dapm_route ssm260x_routes[] = {
154         {"DAC", NULL, "Digital Core Power"},
155         {"ADC", NULL, "Digital Core Power"},
156 
157         {"Output Mixer", "Line Bypass Switch", "Line Input"},
158         {"Output Mixer", "HiFi Playback Switch", "DAC"},
159 
160         {"ROUT", NULL, "Output Mixer"},
161         {"LOUT", NULL, "Output Mixer"},
162 
163         {"Line Input", NULL, "LLINEIN"},
164         {"Line Input", NULL, "RLINEIN"},
165 };
166 
167 static const struct snd_soc_dapm_route ssm2602_routes[] = {
168         {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
169 
170         {"RHPOUT", NULL, "Output Mixer"},
171         {"LHPOUT", NULL, "Output Mixer"},
172 
173         {"Input Mux", "Line", "Line Input"},
174         {"Input Mux", "Mic", "Mic Bias"},
175         {"ADC", NULL, "Input Mux"},
176 
177         {"Mic Bias", NULL, "MICIN"},
178 };
179 
180 static const struct snd_soc_dapm_route ssm2604_routes[] = {
181         {"ADC", NULL, "Line Input"},
182 };
183 
184 static const unsigned int ssm2602_rates_12288000[] = {
185         8000, 16000, 32000, 48000, 96000,
186 };
187 
188 static const struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
189         .list = ssm2602_rates_12288000,
190         .count = ARRAY_SIZE(ssm2602_rates_12288000),
191 };
192 
193 static const unsigned int ssm2602_rates_11289600[] = {
194         8000, 11025, 22050, 44100, 88200,
195 };
196 
197 static const struct snd_pcm_hw_constraint_list ssm2602_constraints_11289600 = {
198         .list = ssm2602_rates_11289600,
199         .count = ARRAY_SIZE(ssm2602_rates_11289600),
200 };
201 
202 struct ssm2602_coeff {
203         u32 mclk;
204         u32 rate;
205         u8 srate;
206 };
207 
208 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
209 
210 /* codec mclk clock coefficients */
211 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
212         /* 48k */
213         {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
214         {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
215         {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
216 
217         /* 32k */
218         {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
219         {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
220         {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
221 
222         /* 16k */
223         {12288000, 16000, SSM2602_COEFF_SRATE(0x5, 0x0, 0x0)},
224         {18432000, 16000, SSM2602_COEFF_SRATE(0x5, 0x1, 0x0)},
225         {12000000, 16000, SSM2602_COEFF_SRATE(0xa, 0x0, 0x1)},
226 
227         /* 8k */
228         {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
229         {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
230         {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
231         {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
232         {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
233 
234         /* 96k */
235         {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
236         {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
237         {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
238 
239         /* 11.025k */
240         {11289600, 11025, SSM2602_COEFF_SRATE(0xc, 0x0, 0x0)},
241         {16934400, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x0)},
242         {12000000, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x1)},
243 
244         /* 22.05k */
245         {11289600, 22050, SSM2602_COEFF_SRATE(0xd, 0x0, 0x0)},
246         {16934400, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x0)},
247         {12000000, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x1)},
248 
249         /* 44.1k */
250         {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
251         {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
252         {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
253 
254         /* 88.2k */
255         {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
256         {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
257         {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
258 };
259 
260 static inline int ssm2602_get_coeff(int mclk, int rate)
261 {
262         int i;
263 
264         for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
265                 if (ssm2602_coeff_table[i].rate == rate &&
266                         ssm2602_coeff_table[i].mclk == mclk)
267                         return ssm2602_coeff_table[i].srate;
268         }
269         return -EINVAL;
270 }
271 
272 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
273         struct snd_pcm_hw_params *params,
274         struct snd_soc_dai *dai)
275 {
276         struct snd_soc_codec *codec = dai->codec;
277         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
278         int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
279         unsigned int iface;
280 
281         if (srate < 0)
282                 return srate;
283 
284         regmap_write(ssm2602->regmap, SSM2602_SRATE, srate);
285 
286         /* bit size */
287         switch (params_width(params)) {
288         case 16:
289                 iface = 0x0;
290                 break;
291         case 20:
292                 iface = 0x4;
293                 break;
294         case 24:
295                 iface = 0x8;
296                 break;
297         case 32:
298                 iface = 0xc;
299                 break;
300         default:
301                 return -EINVAL;
302         }
303         regmap_update_bits(ssm2602->regmap, SSM2602_IFACE,
304                 IFACE_AUDIO_DATA_LEN, iface);
305         return 0;
306 }
307 
308 static int ssm2602_startup(struct snd_pcm_substream *substream,
309                            struct snd_soc_dai *dai)
310 {
311         struct snd_soc_codec *codec = dai->codec;
312         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
313 
314         if (ssm2602->sysclk_constraints) {
315                 snd_pcm_hw_constraint_list(substream->runtime, 0,
316                                    SNDRV_PCM_HW_PARAM_RATE,
317                                    ssm2602->sysclk_constraints);
318         }
319 
320         return 0;
321 }
322 
323 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
324 {
325         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(dai->codec);
326 
327         if (mute)
328                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
329                                     APDIGI_ENABLE_DAC_MUTE,
330                                     APDIGI_ENABLE_DAC_MUTE);
331         else
332                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
333                                     APDIGI_ENABLE_DAC_MUTE, 0);
334         return 0;
335 }
336 
337 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
338                 int clk_id, unsigned int freq, int dir)
339 {
340         struct snd_soc_codec *codec = codec_dai->codec;
341         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
342 
343         if (dir == SND_SOC_CLOCK_IN) {
344                 if (clk_id != SSM2602_SYSCLK)
345                         return -EINVAL;
346 
347                 switch (freq) {
348                 case 12288000:
349                 case 18432000:
350                         ssm2602->sysclk_constraints = &ssm2602_constraints_12288000;
351                         break;
352                 case 11289600:
353                 case 16934400:
354                         ssm2602->sysclk_constraints = &ssm2602_constraints_11289600;
355                         break;
356                 case 12000000:
357                         ssm2602->sysclk_constraints = NULL;
358                         break;
359                 default:
360                         return -EINVAL;
361                 }
362                 ssm2602->sysclk = freq;
363         } else {
364                 unsigned int mask;
365 
366                 switch (clk_id) {
367                 case SSM2602_CLK_CLKOUT:
368                         mask = PWR_CLK_OUT_PDN;
369                         break;
370                 case SSM2602_CLK_XTO:
371                         mask = PWR_OSC_PDN;
372                         break;
373                 default:
374                         return -EINVAL;
375                 }
376 
377                 if (freq == 0)
378                         ssm2602->clk_out_pwr |= mask;
379                 else
380                         ssm2602->clk_out_pwr &= ~mask;
381 
382                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
383                         PWR_CLK_OUT_PDN | PWR_OSC_PDN, ssm2602->clk_out_pwr);
384         }
385 
386         return 0;
387 }
388 
389 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
390                 unsigned int fmt)
391 {
392         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec_dai->codec);
393         unsigned int iface = 0;
394 
395         /* set master/slave audio interface */
396         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
397         case SND_SOC_DAIFMT_CBM_CFM:
398                 iface |= 0x0040;
399                 break;
400         case SND_SOC_DAIFMT_CBS_CFS:
401                 break;
402         default:
403                 return -EINVAL;
404         }
405 
406         /* interface format */
407         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
408         case SND_SOC_DAIFMT_I2S:
409                 iface |= 0x0002;
410                 break;
411         case SND_SOC_DAIFMT_RIGHT_J:
412                 break;
413         case SND_SOC_DAIFMT_LEFT_J:
414                 iface |= 0x0001;
415                 break;
416         case SND_SOC_DAIFMT_DSP_A:
417                 iface |= 0x0013;
418                 break;
419         case SND_SOC_DAIFMT_DSP_B:
420                 iface |= 0x0003;
421                 break;
422         default:
423                 return -EINVAL;
424         }
425 
426         /* clock inversion */
427         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
428         case SND_SOC_DAIFMT_NB_NF:
429                 break;
430         case SND_SOC_DAIFMT_IB_IF:
431                 iface |= 0x0090;
432                 break;
433         case SND_SOC_DAIFMT_IB_NF:
434                 iface |= 0x0080;
435                 break;
436         case SND_SOC_DAIFMT_NB_IF:
437                 iface |= 0x0010;
438                 break;
439         default:
440                 return -EINVAL;
441         }
442 
443         /* set iface */
444         regmap_write(ssm2602->regmap, SSM2602_IFACE, iface);
445         return 0;
446 }
447 
448 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
449                                  enum snd_soc_bias_level level)
450 {
451         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
452 
453         switch (level) {
454         case SND_SOC_BIAS_ON:
455                 /* vref/mid on, osc and clkout on if enabled */
456                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
457                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
458                         ssm2602->clk_out_pwr);
459                 break;
460         case SND_SOC_BIAS_PREPARE:
461                 break;
462         case SND_SOC_BIAS_STANDBY:
463                 /* everything off except vref/vmid, */
464                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
465                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
466                         PWR_CLK_OUT_PDN | PWR_OSC_PDN);
467                 break;
468         case SND_SOC_BIAS_OFF:
469                 /* everything off */
470                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
471                         PWR_POWER_OFF, PWR_POWER_OFF);
472                 break;
473 
474         }
475         return 0;
476 }
477 
478 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
479                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
480                 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
481                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
482                 SNDRV_PCM_RATE_96000)
483 
484 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
485                 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
486 
487 static const struct snd_soc_dai_ops ssm2602_dai_ops = {
488         .startup        = ssm2602_startup,
489         .hw_params      = ssm2602_hw_params,
490         .digital_mute   = ssm2602_mute,
491         .set_sysclk     = ssm2602_set_dai_sysclk,
492         .set_fmt        = ssm2602_set_dai_fmt,
493 };
494 
495 static struct snd_soc_dai_driver ssm2602_dai = {
496         .name = "ssm2602-hifi",
497         .playback = {
498                 .stream_name = "Playback",
499                 .channels_min = 2,
500                 .channels_max = 2,
501                 .rates = SSM2602_RATES,
502                 .formats = SSM2602_FORMATS,},
503         .capture = {
504                 .stream_name = "Capture",
505                 .channels_min = 2,
506                 .channels_max = 2,
507                 .rates = SSM2602_RATES,
508                 .formats = SSM2602_FORMATS,},
509         .ops = &ssm2602_dai_ops,
510         .symmetric_rates = 1,
511         .symmetric_samplebits = 1,
512 };
513 
514 static int ssm2602_resume(struct snd_soc_codec *codec)
515 {
516         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
517 
518         regcache_sync(ssm2602->regmap);
519 
520         return 0;
521 }
522 
523 static int ssm2602_codec_probe(struct snd_soc_codec *codec)
524 {
525         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
526         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
527         int ret;
528 
529         regmap_update_bits(ssm2602->regmap, SSM2602_LOUT1V,
530                             LOUT1V_LRHP_BOTH, LOUT1V_LRHP_BOTH);
531         regmap_update_bits(ssm2602->regmap, SSM2602_ROUT1V,
532                             ROUT1V_RLHP_BOTH, ROUT1V_RLHP_BOTH);
533 
534         ret = snd_soc_add_codec_controls(codec, ssm2602_snd_controls,
535                         ARRAY_SIZE(ssm2602_snd_controls));
536         if (ret)
537                 return ret;
538 
539         ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
540                         ARRAY_SIZE(ssm2602_dapm_widgets));
541         if (ret)
542                 return ret;
543 
544         return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
545                         ARRAY_SIZE(ssm2602_routes));
546 }
547 
548 static int ssm2604_codec_probe(struct snd_soc_codec *codec)
549 {
550         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
551         int ret;
552 
553         ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
554                         ARRAY_SIZE(ssm2604_dapm_widgets));
555         if (ret)
556                 return ret;
557 
558         return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
559                         ARRAY_SIZE(ssm2604_routes));
560 }
561 
562 static int ssm260x_codec_probe(struct snd_soc_codec *codec)
563 {
564         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
565         int ret;
566 
567         ret = regmap_write(ssm2602->regmap, SSM2602_RESET, 0);
568         if (ret < 0) {
569                 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
570                 return ret;
571         }
572 
573         /* set the update bits */
574         regmap_update_bits(ssm2602->regmap, SSM2602_LINVOL,
575                             LINVOL_LRIN_BOTH, LINVOL_LRIN_BOTH);
576         regmap_update_bits(ssm2602->regmap, SSM2602_RINVOL,
577                             RINVOL_RLIN_BOTH, RINVOL_RLIN_BOTH);
578         /*select Line in as default input*/
579         regmap_write(ssm2602->regmap, SSM2602_APANA, APANA_SELECT_DAC |
580                         APANA_ENABLE_MIC_BOOST);
581 
582         switch (ssm2602->type) {
583         case SSM2602:
584                 ret = ssm2602_codec_probe(codec);
585                 break;
586         case SSM2604:
587                 ret = ssm2604_codec_probe(codec);
588                 break;
589         }
590 
591         return ret;
592 }
593 
594 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
595         .probe =        ssm260x_codec_probe,
596         .resume =       ssm2602_resume,
597         .set_bias_level = ssm2602_set_bias_level,
598         .suspend_bias_off = true,
599 
600         .component_driver = {
601                 .controls               = ssm260x_snd_controls,
602                 .num_controls           = ARRAY_SIZE(ssm260x_snd_controls),
603                 .dapm_widgets           = ssm260x_dapm_widgets,
604                 .num_dapm_widgets       = ARRAY_SIZE(ssm260x_dapm_widgets),
605                 .dapm_routes            = ssm260x_routes,
606                 .num_dapm_routes        = ARRAY_SIZE(ssm260x_routes),
607         },
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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