~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/tas571x.c

Version: ~ [ linux-5.12-rc1 ] ~ [ linux-5.11.2 ] ~ [ linux-5.10.19 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.101 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.177 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.222 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.258 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.258 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * TAS571x amplifier audio driver
  3  *
  4  * Copyright (C) 2015 Google, Inc.
  5  * Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
  6  *
  7  * TAS5721 support:
  8  * Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.com>
  9  *
 10  * This program is free software; you can redistribute it and/or modify
 11  * it under the terms of the GNU General Public License as published by
 12  * the Free Software Foundation; either version 2 of the License, or
 13  * (at your option) any later version.
 14  */
 15 
 16 #include <linux/clk.h>
 17 #include <linux/delay.h>
 18 #include <linux/device.h>
 19 #include <linux/gpio/consumer.h>
 20 #include <linux/i2c.h>
 21 #include <linux/init.h>
 22 #include <linux/kernel.h>
 23 #include <linux/module.h>
 24 #include <linux/of_device.h>
 25 #include <linux/regmap.h>
 26 #include <linux/regulator/consumer.h>
 27 #include <linux/stddef.h>
 28 #include <sound/pcm_params.h>
 29 #include <sound/soc.h>
 30 #include <sound/tlv.h>
 31 #include <asm/unaligned.h>
 32 
 33 #include "tas571x.h"
 34 
 35 #define TAS571X_MAX_SUPPLIES            6
 36 
 37 struct tas571x_chip {
 38         const char                      *const *supply_names;
 39         int                             num_supply_names;
 40         const struct snd_kcontrol_new   *controls;
 41         int                             num_controls;
 42         const struct regmap_config      *regmap_config;
 43         int                             vol_reg_size;
 44 };
 45 
 46 struct tas571x_private {
 47         const struct tas571x_chip       *chip;
 48         struct regmap                   *regmap;
 49         struct regulator_bulk_data      supplies[TAS571X_MAX_SUPPLIES];
 50         struct clk                      *mclk;
 51         unsigned int                    format;
 52         struct gpio_desc                *reset_gpio;
 53         struct gpio_desc                *pdn_gpio;
 54         struct snd_soc_codec_driver     codec_driver;
 55 };
 56 
 57 static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg)
 58 {
 59         switch (reg) {
 60         case TAS571X_MVOL_REG:
 61         case TAS571X_CH1_VOL_REG:
 62         case TAS571X_CH2_VOL_REG:
 63                 return priv->chip->vol_reg_size;
 64         case TAS571X_INPUT_MUX_REG:
 65         case TAS571X_CH4_SRC_SELECT_REG:
 66         case TAS571X_PWM_MUX_REG:
 67         case TAS5717_CH1_RIGHT_CH_MIX_REG:
 68         case TAS5717_CH1_LEFT_CH_MIX_REG:
 69         case TAS5717_CH2_LEFT_CH_MIX_REG:
 70         case TAS5717_CH2_RIGHT_CH_MIX_REG:
 71                 return 4;
 72         default:
 73                 return 1;
 74         }
 75 }
 76 
 77 static int tas571x_reg_write(void *context, unsigned int reg,
 78                              unsigned int value)
 79 {
 80         struct i2c_client *client = context;
 81         struct tas571x_private *priv = i2c_get_clientdata(client);
 82         unsigned int i, size;
 83         uint8_t buf[5];
 84         int ret;
 85 
 86         size = tas571x_register_size(priv, reg);
 87         buf[0] = reg;
 88 
 89         for (i = size; i >= 1; --i) {
 90                 buf[i] = value;
 91                 value >>= 8;
 92         }
 93 
 94         ret = i2c_master_send(client, buf, size + 1);
 95         if (ret == size + 1)
 96                 return 0;
 97         else if (ret < 0)
 98                 return ret;
 99         else
100                 return -EIO;
101 }
102 
103 static int tas571x_reg_read(void *context, unsigned int reg,
104                             unsigned int *value)
105 {
106         struct i2c_client *client = context;
107         struct tas571x_private *priv = i2c_get_clientdata(client);
108         uint8_t send_buf, recv_buf[4];
109         struct i2c_msg msgs[2];
110         unsigned int size;
111         unsigned int i;
112         int ret;
113 
114         size = tas571x_register_size(priv, reg);
115         send_buf = reg;
116 
117         msgs[0].addr = client->addr;
118         msgs[0].len = sizeof(send_buf);
119         msgs[0].buf = &send_buf;
120         msgs[0].flags = 0;
121 
122         msgs[1].addr = client->addr;
123         msgs[1].len = size;
124         msgs[1].buf = recv_buf;
125         msgs[1].flags = I2C_M_RD;
126 
127         ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
128         if (ret < 0)
129                 return ret;
130         else if (ret != ARRAY_SIZE(msgs))
131                 return -EIO;
132 
133         *value = 0;
134 
135         for (i = 0; i < size; i++) {
136                 *value <<= 8;
137                 *value |= recv_buf[i];
138         }
139 
140         return 0;
141 }
142 
143 /*
144  * register write for 8- and 20-byte registers
145  */
146 static int tas571x_reg_write_multiword(struct i2c_client *client,
147                 unsigned int reg, const long values[], size_t len)
148 {
149         size_t i;
150         uint8_t *buf, *p;
151         int ret;
152         size_t send_size = 1 + len * sizeof(uint32_t);
153 
154         buf = kzalloc(send_size, GFP_KERNEL | GFP_DMA);
155         if (!buf)
156                 return -ENOMEM;
157         buf[0] = reg;
158 
159         for (i = 0, p = buf + 1; i < len; i++, p += sizeof(uint32_t))
160                 put_unaligned_be32(values[i], p);
161 
162         ret = i2c_master_send(client, buf, send_size);
163 
164         kfree(buf);
165 
166         if (ret == send_size)
167                 return 0;
168         else if (ret < 0)
169                 return ret;
170         else
171                 return -EIO;
172 }
173 
174 /*
175  * register read for 8- and 20-byte registers
176  */
177 static int tas571x_reg_read_multiword(struct i2c_client *client,
178                 unsigned int reg, long values[], size_t len)
179 {
180         unsigned int i;
181         uint8_t send_buf;
182         uint8_t *recv_buf, *p;
183         struct i2c_msg msgs[2];
184         unsigned int recv_size = len * sizeof(uint32_t);
185         int ret;
186 
187         recv_buf = kzalloc(recv_size, GFP_KERNEL | GFP_DMA);
188         if (!recv_buf)
189                 return -ENOMEM;
190 
191         send_buf = reg;
192 
193         msgs[0].addr = client->addr;
194         msgs[0].len = sizeof(send_buf);
195         msgs[0].buf = &send_buf;
196         msgs[0].flags = 0;
197 
198         msgs[1].addr = client->addr;
199         msgs[1].len = recv_size;
200         msgs[1].buf = recv_buf;
201         msgs[1].flags = I2C_M_RD;
202 
203         ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
204         if (ret < 0)
205                 goto err_ret;
206         else if (ret != ARRAY_SIZE(msgs)) {
207                 ret = -EIO;
208                 goto err_ret;
209         }
210 
211         for (i = 0, p = recv_buf; i < len; i++, p += sizeof(uint32_t))
212                 values[i] = get_unaligned_be32(p);
213 
214 err_ret:
215         kfree(recv_buf);
216         return ret;
217 }
218 
219 /*
220  * Integer array controls for setting biquad, mixer, DRC coefficients.
221  * According to the datasheet each coefficient is effectively 26bits,
222  * i.e. stored as 32bits, where bits [31:26] are ignored.
223  * TI's TAS57xx Graphical Development Environment tool however produces
224  * coefficients with more than 26 bits. For this reason we allow values
225  * in the full 32-bits reange.
226  * The coefficients are ordered as given in the TAS571x data sheet:
227  * b0, b1, b2, a1, a2
228  */
229 
230 static int tas571x_coefficient_info(struct snd_kcontrol *kcontrol,
231                                    struct snd_ctl_elem_info *uinfo)
232 {
233         int numcoef = kcontrol->private_value >> 16;
234 
235         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
236         uinfo->count = numcoef;
237         uinfo->value.integer.min = 0;
238         uinfo->value.integer.max = 0xffffffff;
239         return 0;
240 }
241 
242 static int tas571x_coefficient_get(struct snd_kcontrol *kcontrol,
243                                   struct snd_ctl_elem_value *ucontrol)
244 {
245         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
246         struct i2c_client *i2c = to_i2c_client(codec->dev);
247         int numcoef = kcontrol->private_value >> 16;
248         int index = kcontrol->private_value & 0xffff;
249 
250         return tas571x_reg_read_multiword(i2c, index,
251                 ucontrol->value.integer.value, numcoef);
252 }
253 
254 static int tas571x_coefficient_put(struct snd_kcontrol *kcontrol,
255                                   struct snd_ctl_elem_value *ucontrol)
256 {
257         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
258         struct i2c_client *i2c = to_i2c_client(codec->dev);
259         int numcoef = kcontrol->private_value >> 16;
260         int index = kcontrol->private_value & 0xffff;
261 
262         return tas571x_reg_write_multiword(i2c, index,
263                 ucontrol->value.integer.value, numcoef);
264 }
265 
266 static int tas571x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
267 {
268         struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);
269 
270         priv->format = format;
271 
272         return 0;
273 }
274 
275 static int tas571x_hw_params(struct snd_pcm_substream *substream,
276                              struct snd_pcm_hw_params *params,
277                              struct snd_soc_dai *dai)
278 {
279         struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);
280         u32 val;
281 
282         switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
283         case SND_SOC_DAIFMT_RIGHT_J:
284                 val = 0x00;
285                 break;
286         case SND_SOC_DAIFMT_I2S:
287                 val = 0x03;
288                 break;
289         case SND_SOC_DAIFMT_LEFT_J:
290                 val = 0x06;
291                 break;
292         default:
293                 return -EINVAL;
294         }
295 
296         if (params_width(params) >= 24)
297                 val += 2;
298         else if (params_width(params) >= 20)
299                 val += 1;
300 
301         return regmap_update_bits(priv->regmap, TAS571X_SDI_REG,
302                                   TAS571X_SDI_FMT_MASK, val);
303 }
304 
305 static int tas571x_mute(struct snd_soc_dai *dai, int mute)
306 {
307         struct snd_soc_codec *codec = dai->codec;
308         u8 sysctl2;
309         int ret;
310 
311         sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0;
312 
313         ret = snd_soc_update_bits(codec,
314                             TAS571X_SYS_CTRL_2_REG,
315                      TAS571X_SYS_CTRL_2_SDN_MASK,
316                      sysctl2);
317         usleep_range(1000, 2000);
318 
319         return ret;
320 }
321 
322 static int tas571x_set_bias_level(struct snd_soc_codec *codec,
323                                   enum snd_soc_bias_level level)
324 {
325         struct tas571x_private *priv = snd_soc_codec_get_drvdata(codec);
326         int ret;
327 
328         switch (level) {
329         case SND_SOC_BIAS_ON:
330                 break;
331         case SND_SOC_BIAS_PREPARE:
332                 break;
333         case SND_SOC_BIAS_STANDBY:
334                 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
335                         if (!IS_ERR(priv->mclk)) {
336                                 ret = clk_prepare_enable(priv->mclk);
337                                 if (ret) {
338                                         dev_err(codec->dev,
339                                                 "Failed to enable master clock: %d\n",
340                                                 ret);
341                                         return ret;
342                                 }
343                         }
344                 }
345                 break;
346         case SND_SOC_BIAS_OFF:
347                 if (!IS_ERR(priv->mclk))
348                         clk_disable_unprepare(priv->mclk);
349                 break;
350         }
351 
352         return 0;
353 }
354 
355 static const struct snd_soc_dai_ops tas571x_dai_ops = {
356         .set_fmt        = tas571x_set_dai_fmt,
357         .hw_params      = tas571x_hw_params,
358         .digital_mute   = tas571x_mute,
359 };
360 
361 
362 #define BIQUAD_COEFS(xname, reg) \
363 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
364         .info = tas571x_coefficient_info, \
365         .get = tas571x_coefficient_get,\
366         .put = tas571x_coefficient_put, \
367         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
368         .private_value = reg | (5 << 16) }
369 
370 static const char *const tas5711_supply_names[] = {
371         "AVDD",
372         "DVDD",
373         "PVDD_A",
374         "PVDD_B",
375         "PVDD_C",
376         "PVDD_D",
377 };
378 
379 static const DECLARE_TLV_DB_SCALE(tas5711_volume_tlv, -10350, 50, 1);
380 
381 static const struct snd_kcontrol_new tas5711_controls[] = {
382         SOC_SINGLE_TLV("Master Volume",
383                        TAS571X_MVOL_REG,
384                        0, 0xff, 1, tas5711_volume_tlv),
385         SOC_DOUBLE_R_TLV("Speaker Volume",
386                          TAS571X_CH1_VOL_REG,
387                          TAS571X_CH2_VOL_REG,
388                          0, 0xff, 1, tas5711_volume_tlv),
389         SOC_DOUBLE("Speaker Switch",
390                    TAS571X_SOFT_MUTE_REG,
391                    TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
392                    1, 1),
393 };
394 
395 static const struct regmap_range tas571x_readonly_regs_range[] = {
396         regmap_reg_range(TAS571X_CLK_CTRL_REG,  TAS571X_DEV_ID_REG),
397 };
398 
399 static const struct regmap_range tas571x_volatile_regs_range[] = {
400         regmap_reg_range(TAS571X_CLK_CTRL_REG,  TAS571X_ERR_STATUS_REG),
401         regmap_reg_range(TAS571X_OSC_TRIM_REG,  TAS571X_OSC_TRIM_REG),
402 };
403 
404 static const struct regmap_access_table tas571x_write_regs = {
405         .no_ranges =    tas571x_readonly_regs_range,
406         .n_no_ranges =  ARRAY_SIZE(tas571x_readonly_regs_range),
407 };
408 
409 static const struct regmap_access_table tas571x_volatile_regs = {
410         .yes_ranges =   tas571x_volatile_regs_range,
411         .n_yes_ranges = ARRAY_SIZE(tas571x_volatile_regs_range),
412 
413 };
414 
415 static const struct reg_default tas5711_reg_defaults[] = {
416         { 0x04, 0x05 },
417         { 0x05, 0x40 },
418         { 0x06, 0x00 },
419         { 0x07, 0xff },
420         { 0x08, 0x30 },
421         { 0x09, 0x30 },
422         { 0x1b, 0x82 },
423 };
424 
425 static const struct regmap_config tas5711_regmap_config = {
426         .reg_bits                       = 8,
427         .val_bits                       = 32,
428         .max_register                   = 0xff,
429         .reg_read                       = tas571x_reg_read,
430         .reg_write                      = tas571x_reg_write,
431         .reg_defaults                   = tas5711_reg_defaults,
432         .num_reg_defaults               = ARRAY_SIZE(tas5711_reg_defaults),
433         .cache_type                     = REGCACHE_RBTREE,
434         .wr_table                       = &tas571x_write_regs,
435         .volatile_table                 = &tas571x_volatile_regs,
436 };
437 
438 static const struct tas571x_chip tas5711_chip = {
439         .supply_names                   = tas5711_supply_names,
440         .num_supply_names               = ARRAY_SIZE(tas5711_supply_names),
441         .controls                       = tas5711_controls,
442         .num_controls                   = ARRAY_SIZE(tas5711_controls),
443         .regmap_config                  = &tas5711_regmap_config,
444         .vol_reg_size                   = 1,
445 };
446 
447 static const char *const tas5717_supply_names[] = {
448         "AVDD",
449         "DVDD",
450         "HPVDD",
451         "PVDD_AB",
452         "PVDD_CD",
453 };
454 
455 static const DECLARE_TLV_DB_SCALE(tas5717_volume_tlv, -10375, 25, 0);
456 
457 static const struct snd_kcontrol_new tas5717_controls[] = {
458         /* MVOL LSB is ignored - see comments in tas571x_i2c_probe() */
459         SOC_SINGLE_TLV("Master Volume",
460                        TAS571X_MVOL_REG, 1, 0x1ff, 1,
461                        tas5717_volume_tlv),
462         SOC_DOUBLE_R_TLV("Speaker Volume",
463                          TAS571X_CH1_VOL_REG, TAS571X_CH2_VOL_REG,
464                          1, 0x1ff, 1, tas5717_volume_tlv),
465         SOC_DOUBLE("Speaker Switch",
466                    TAS571X_SOFT_MUTE_REG,
467                    TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
468                    1, 1),
469 
470         SOC_DOUBLE_R_RANGE("CH1 Mixer Volume",
471                            TAS5717_CH1_LEFT_CH_MIX_REG,
472                            TAS5717_CH1_RIGHT_CH_MIX_REG,
473                            16, 0, 0x80, 0),
474 
475         SOC_DOUBLE_R_RANGE("CH2 Mixer Volume",
476                            TAS5717_CH2_LEFT_CH_MIX_REG,
477                            TAS5717_CH2_RIGHT_CH_MIX_REG,
478                            16, 0, 0x80, 0),
479 
480         /*
481          * The biquads are named according to the register names.
482          * Please note that TI's TAS57xx Graphical Development Environment
483          * tool names them different.
484          */
485         BIQUAD_COEFS("CH1 - Biquad 0", TAS5717_CH1_BQ0_REG),
486         BIQUAD_COEFS("CH1 - Biquad 1", TAS5717_CH1_BQ1_REG),
487         BIQUAD_COEFS("CH1 - Biquad 2", TAS5717_CH1_BQ2_REG),
488         BIQUAD_COEFS("CH1 - Biquad 3", TAS5717_CH1_BQ3_REG),
489         BIQUAD_COEFS("CH1 - Biquad 4", TAS5717_CH1_BQ4_REG),
490         BIQUAD_COEFS("CH1 - Biquad 5", TAS5717_CH1_BQ5_REG),
491         BIQUAD_COEFS("CH1 - Biquad 6", TAS5717_CH1_BQ6_REG),
492         BIQUAD_COEFS("CH1 - Biquad 7", TAS5717_CH1_BQ7_REG),
493         BIQUAD_COEFS("CH1 - Biquad 8", TAS5717_CH1_BQ8_REG),
494         BIQUAD_COEFS("CH1 - Biquad 9", TAS5717_CH1_BQ9_REG),
495         BIQUAD_COEFS("CH1 - Biquad 10", TAS5717_CH1_BQ10_REG),
496         BIQUAD_COEFS("CH1 - Biquad 11", TAS5717_CH1_BQ11_REG),
497 
498         BIQUAD_COEFS("CH2 - Biquad 0", TAS5717_CH2_BQ0_REG),
499         BIQUAD_COEFS("CH2 - Biquad 1", TAS5717_CH2_BQ1_REG),
500         BIQUAD_COEFS("CH2 - Biquad 2", TAS5717_CH2_BQ2_REG),
501         BIQUAD_COEFS("CH2 - Biquad 3", TAS5717_CH2_BQ3_REG),
502         BIQUAD_COEFS("CH2 - Biquad 4", TAS5717_CH2_BQ4_REG),
503         BIQUAD_COEFS("CH2 - Biquad 5", TAS5717_CH2_BQ5_REG),
504         BIQUAD_COEFS("CH2 - Biquad 6", TAS5717_CH2_BQ6_REG),
505         BIQUAD_COEFS("CH2 - Biquad 7", TAS5717_CH2_BQ7_REG),
506         BIQUAD_COEFS("CH2 - Biquad 8", TAS5717_CH2_BQ8_REG),
507         BIQUAD_COEFS("CH2 - Biquad 9", TAS5717_CH2_BQ9_REG),
508         BIQUAD_COEFS("CH2 - Biquad 10", TAS5717_CH2_BQ10_REG),
509         BIQUAD_COEFS("CH2 - Biquad 11", TAS5717_CH2_BQ11_REG),
510 
511         BIQUAD_COEFS("CH3 - Biquad 0", TAS5717_CH3_BQ0_REG),
512         BIQUAD_COEFS("CH3 - Biquad 1", TAS5717_CH3_BQ1_REG),
513 
514         BIQUAD_COEFS("CH4 - Biquad 0", TAS5717_CH4_BQ0_REG),
515         BIQUAD_COEFS("CH4 - Biquad 1", TAS5717_CH4_BQ1_REG),
516 };
517 
518 static const struct reg_default tas5717_reg_defaults[] = {
519         { 0x04, 0x05 },
520         { 0x05, 0x40 },
521         { 0x06, 0x00 },
522         { 0x07, 0x03ff },
523         { 0x08, 0x00c0 },
524         { 0x09, 0x00c0 },
525         { 0x1b, 0x82 },
526         { TAS5717_CH1_RIGHT_CH_MIX_REG, 0x0 },
527         { TAS5717_CH1_LEFT_CH_MIX_REG, 0x800000},
528         { TAS5717_CH2_LEFT_CH_MIX_REG, 0x0 },
529         { TAS5717_CH2_RIGHT_CH_MIX_REG, 0x800000},
530 };
531 
532 static const struct regmap_config tas5717_regmap_config = {
533         .reg_bits                       = 8,
534         .val_bits                       = 32,
535         .max_register                   = 0xff,
536         .reg_read                       = tas571x_reg_read,
537         .reg_write                      = tas571x_reg_write,
538         .reg_defaults                   = tas5717_reg_defaults,
539         .num_reg_defaults               = ARRAY_SIZE(tas5717_reg_defaults),
540         .cache_type                     = REGCACHE_RBTREE,
541         .wr_table                       = &tas571x_write_regs,
542         .volatile_table                 = &tas571x_volatile_regs,
543 };
544 
545 /* This entry is reused for tas5719 as the software interface is identical. */
546 static const struct tas571x_chip tas5717_chip = {
547         .supply_names                   = tas5717_supply_names,
548         .num_supply_names               = ARRAY_SIZE(tas5717_supply_names),
549         .controls                       = tas5717_controls,
550         .num_controls                   = ARRAY_SIZE(tas5717_controls),
551         .regmap_config                  = &tas5717_regmap_config,
552         .vol_reg_size                   = 2,
553 };
554 
555 static const char *const tas5721_supply_names[] = {
556         "AVDD",
557         "DVDD",
558         "DRVDD",
559         "PVDD",
560 };
561 
562 static const struct snd_kcontrol_new tas5721_controls[] = {
563         SOC_SINGLE_TLV("Master Volume",
564                        TAS571X_MVOL_REG,
565                        0, 0xff, 1, tas5711_volume_tlv),
566         SOC_DOUBLE_R_TLV("Speaker Volume",
567                          TAS571X_CH1_VOL_REG,
568                          TAS571X_CH2_VOL_REG,
569                          0, 0xff, 1, tas5711_volume_tlv),
570         SOC_DOUBLE("Speaker Switch",
571                    TAS571X_SOFT_MUTE_REG,
572                    TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
573                    1, 1),
574 };
575 
576 static const struct reg_default tas5721_reg_defaults[] = {
577         {TAS571X_CLK_CTRL_REG,          0x6c},
578         {TAS571X_DEV_ID_REG,            0x00},
579         {TAS571X_ERR_STATUS_REG,        0x00},
580         {TAS571X_SYS_CTRL_1_REG,        0xa0},
581         {TAS571X_SDI_REG,               0x05},
582         {TAS571X_SYS_CTRL_2_REG,        0x40},
583         {TAS571X_SOFT_MUTE_REG,         0x00},
584         {TAS571X_MVOL_REG,              0xff},
585         {TAS571X_CH1_VOL_REG,           0x30},
586         {TAS571X_CH2_VOL_REG,           0x30},
587         {TAS571X_CH3_VOL_REG,           0x30},
588         {TAS571X_VOL_CFG_REG,           0x91},
589         {TAS571X_MODULATION_LIMIT_REG,  0x02},
590         {TAS571X_IC_DELAY_CH1_REG,      0xac},
591         {TAS571X_IC_DELAY_CH2_REG,      0x54},
592         {TAS571X_IC_DELAY_CH3_REG,      0xac},
593         {TAS571X_IC_DELAY_CH4_REG,      0x54},
594         {TAS571X_PWM_CH_SDN_GROUP_REG,  0x30},
595         {TAS571X_START_STOP_PERIOD_REG, 0x0f},
596         {TAS571X_OSC_TRIM_REG,          0x82},
597         {TAS571X_BKND_ERR_REG,          0x02},
598         {TAS571X_INPUT_MUX_REG,         0x17772},
599         {TAS571X_CH4_SRC_SELECT_REG,    0x4303},
600         {TAS571X_PWM_MUX_REG,           0x1021345},
601 };
602 
603 static const struct regmap_config tas5721_regmap_config = {
604         .reg_bits                       = 8,
605         .val_bits                       = 32,
606         .max_register                   = 0xff,
607         .reg_read                       = tas571x_reg_read,
608         .reg_write                      = tas571x_reg_write,
609         .reg_defaults                   = tas5721_reg_defaults,
610         .num_reg_defaults               = ARRAY_SIZE(tas5721_reg_defaults),
611         .cache_type                     = REGCACHE_RBTREE,
612         .wr_table                       = &tas571x_write_regs,
613         .volatile_table                 = &tas571x_volatile_regs,
614 };
615 
616 
617 static const struct tas571x_chip tas5721_chip = {
618         .supply_names                   = tas5721_supply_names,
619         .num_supply_names               = ARRAY_SIZE(tas5721_supply_names),
620         .controls                       = tas5711_controls,
621         .num_controls                   = ARRAY_SIZE(tas5711_controls),
622         .regmap_config                  = &tas5721_regmap_config,
623         .vol_reg_size                   = 1,
624 };
625 
626 static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = {
627         SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
628         SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
629 
630         SND_SOC_DAPM_OUTPUT("OUT_A"),
631         SND_SOC_DAPM_OUTPUT("OUT_B"),
632         SND_SOC_DAPM_OUTPUT("OUT_C"),
633         SND_SOC_DAPM_OUTPUT("OUT_D"),
634 };
635 
636 static const struct snd_soc_dapm_route tas571x_dapm_routes[] = {
637         { "DACL",  NULL, "Playback" },
638         { "DACR",  NULL, "Playback" },
639 
640         { "OUT_A", NULL, "DACL" },
641         { "OUT_B", NULL, "DACL" },
642         { "OUT_C", NULL, "DACR" },
643         { "OUT_D", NULL, "DACR" },
644 };
645 
646 static const struct snd_soc_codec_driver tas571x_codec = {
647         .set_bias_level = tas571x_set_bias_level,
648         .idle_bias_off = true,
649 
650         .component_driver = {
651                 .dapm_widgets           = tas571x_dapm_widgets,
652                 .num_dapm_widgets       = ARRAY_SIZE(tas571x_dapm_widgets),
653                 .dapm_routes            = tas571x_dapm_routes,
654                 .num_dapm_routes        = ARRAY_SIZE(tas571x_dapm_routes),
655         },
656 };
657 
658 static struct snd_soc_dai_driver tas571x_dai = {
659         .name = "tas571x-hifi",
660         .playback = {
661                 .stream_name = "Playback",
662                 .channels_min = 2,
663                 .channels_max = 2,
664                 .rates = SNDRV_PCM_RATE_8000_48000,
665                 .formats = SNDRV_PCM_FMTBIT_S32_LE |
666                            SNDRV_PCM_FMTBIT_S24_LE |
667                            SNDRV_PCM_FMTBIT_S16_LE,
668         },
669         .ops = &tas571x_dai_ops,
670 };
671 
672 static const struct of_device_id tas571x_of_match[];
673 
674 static int tas571x_i2c_probe(struct i2c_client *client,
675                              const struct i2c_device_id *id)
676 {
677         struct tas571x_private *priv;
678         struct device *dev = &client->dev;
679         const struct of_device_id *of_id;
680         int i, ret;
681 
682         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
683         if (!priv)
684                 return -ENOMEM;
685         i2c_set_clientdata(client, priv);
686 
687         of_id = of_match_device(tas571x_of_match, dev);
688         if (of_id)
689                 priv->chip = of_id->data;
690         else
691                 priv->chip = (void *) id->driver_data;
692 
693         priv->mclk = devm_clk_get(dev, "mclk");
694         if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) {
695                 dev_err(dev, "Failed to request mclk: %ld\n",
696                         PTR_ERR(priv->mclk));
697                 return PTR_ERR(priv->mclk);
698         }
699 
700         if (WARN_ON(priv->chip->num_supply_names > TAS571X_MAX_SUPPLIES))
701                 return -EINVAL;
702         for (i = 0; i < priv->chip->num_supply_names; i++)
703                 priv->supplies[i].supply = priv->chip->supply_names[i];
704 
705         ret = devm_regulator_bulk_get(dev, priv->chip->num_supply_names,
706                                       priv->supplies);
707         if (ret) {
708                 dev_err(dev, "Failed to get supplies: %d\n", ret);
709                 return ret;
710         }
711         ret = regulator_bulk_enable(priv->chip->num_supply_names,
712                                     priv->supplies);
713         if (ret) {
714                 dev_err(dev, "Failed to enable supplies: %d\n", ret);
715                 return ret;
716         }
717 
718         priv->regmap = devm_regmap_init(dev, NULL, client,
719                                         priv->chip->regmap_config);
720         if (IS_ERR(priv->regmap))
721                 return PTR_ERR(priv->regmap);
722 
723         priv->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW);
724         if (IS_ERR(priv->pdn_gpio)) {
725                 dev_err(dev, "error requesting pdn_gpio: %ld\n",
726                         PTR_ERR(priv->pdn_gpio));
727                 return PTR_ERR(priv->pdn_gpio);
728         }
729 
730         priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
731                                                    GPIOD_OUT_HIGH);
732         if (IS_ERR(priv->reset_gpio)) {
733                 dev_err(dev, "error requesting reset_gpio: %ld\n",
734                         PTR_ERR(priv->reset_gpio));
735                 return PTR_ERR(priv->reset_gpio);
736         } else if (priv->reset_gpio) {
737                 /* pulse the active low reset line for ~100us */
738                 usleep_range(100, 200);
739                 gpiod_set_value(priv->reset_gpio, 0);
740                 usleep_range(13500, 20000);
741         }
742 
743         ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0);
744         if (ret)
745                 return ret;
746 
747         usleep_range(50000, 60000);
748 
749         memcpy(&priv->codec_driver, &tas571x_codec, sizeof(priv->codec_driver));
750         priv->codec_driver.component_driver.controls = priv->chip->controls;
751         priv->codec_driver.component_driver.num_controls = priv->chip->num_controls;
752 
753         if (priv->chip->vol_reg_size == 2) {
754                 /*
755                  * The master volume defaults to 0x3ff (mute), but we ignore
756                  * (zero) the LSB because the hardware step size is 0.125 dB
757                  * and TLV_DB_SCALE_ITEM has a resolution of 0.01 dB.
758                  */
759                 ret = regmap_update_bits(priv->regmap, TAS571X_MVOL_REG, 1, 0);
760                 if (ret)
761                         return ret;
762         }
763 
764         return snd_soc_register_codec(&client->dev, &priv->codec_driver,
765                                       &tas571x_dai, 1);
766 }
767 
768 static int tas571x_i2c_remove(struct i2c_client *client)
769 {
770         struct tas571x_private *priv = i2c_get_clientdata(client);
771 
772         snd_soc_unregister_codec(&client->dev);
773         regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies);
774 
775         return 0;
776 }
777 
778 static const struct of_device_id tas571x_of_match[] = {
779         { .compatible = "ti,tas5711", .data = &tas5711_chip, },
780         { .compatible = "ti,tas5717", .data = &tas5717_chip, },
781         { .compatible = "ti,tas5719", .data = &tas5717_chip, },
782         { .compatible = "ti,tas5721", .data = &tas5721_chip, },
783         { }
784 };
785 MODULE_DEVICE_TABLE(of, tas571x_of_match);
786 
787 static const struct i2c_device_id tas571x_i2c_id[] = {
788         { "tas5711", (kernel_ulong_t) &tas5711_chip },
789         { "tas5717", (kernel_ulong_t) &tas5717_chip },
790         { "tas5719", (kernel_ulong_t) &tas5717_chip },
791         { "tas5721", (kernel_ulong_t) &tas5721_chip },
792         { }
793 };
794 MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id);
795 
796 static struct i2c_driver tas571x_i2c_driver = {
797         .driver = {
798                 .name = "tas571x",
799                 .of_match_table = of_match_ptr(tas571x_of_match),
800         },
801         .probe = tas571x_i2c_probe,
802         .remove = tas571x_i2c_remove,
803         .id_table = tas571x_i2c_id,
804 };
805 module_i2c_driver(tas571x_i2c_driver);
806 
807 MODULE_DESCRIPTION("ASoC TAS571x driver");
808 MODULE_AUTHOR("Kevin Cernekee <cernekee@chromium.org>");
809 MODULE_LICENSE("GPL");
810 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp