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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
3fd6e7d9 KC |
2 | /* |
3 | * TAS571x amplifier audio driver | |
4 | * | |
5 | * Copyright (C) 2015 Google, Inc. | |
6 | * Copyright (c) 2013 Daniel Mack <zonque@gmail.com> | |
7 | * | |
23a282c4 PK |
8 | * TAS5721 support: |
9 | * Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.com> | |
10 | * | |
f516d322 JB |
11 | * TAS5707 support: |
12 | * Copyright (C) 2018 Jerome Brunet, Baylibre SAS <jbrunet@baylibre.com> | |
3fd6e7d9 KC |
13 | */ |
14 | ||
15 | #include <linux/clk.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/device.h> | |
18 | #include <linux/gpio/consumer.h> | |
19 | #include <linux/i2c.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/of_device.h> | |
24 | #include <linux/regmap.h> | |
25 | #include <linux/regulator/consumer.h> | |
26 | #include <linux/stddef.h> | |
27 | #include <sound/pcm_params.h> | |
28 | #include <sound/soc.h> | |
29 | #include <sound/tlv.h> | |
4b9e385b | 30 | #include <asm/unaligned.h> |
3fd6e7d9 KC |
31 | |
32 | #include "tas571x.h" | |
33 | ||
34 | #define TAS571X_MAX_SUPPLIES 6 | |
35 | ||
36 | struct tas571x_chip { | |
37 | const char *const *supply_names; | |
38 | int num_supply_names; | |
39 | const struct snd_kcontrol_new *controls; | |
40 | int num_controls; | |
41 | const struct regmap_config *regmap_config; | |
42 | int vol_reg_size; | |
43 | }; | |
44 | ||
45 | struct tas571x_private { | |
46 | const struct tas571x_chip *chip; | |
47 | struct regmap *regmap; | |
48 | struct regulator_bulk_data supplies[TAS571X_MAX_SUPPLIES]; | |
49 | struct clk *mclk; | |
50 | unsigned int format; | |
51 | struct gpio_desc *reset_gpio; | |
52 | struct gpio_desc *pdn_gpio; | |
2be04bab | 53 | struct snd_soc_component_driver component_driver; |
3fd6e7d9 KC |
54 | }; |
55 | ||
56 | static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg) | |
57 | { | |
58 | switch (reg) { | |
59 | case TAS571X_MVOL_REG: | |
60 | case TAS571X_CH1_VOL_REG: | |
61 | case TAS571X_CH2_VOL_REG: | |
62 | return priv->chip->vol_reg_size; | |
a593ed09 PK |
63 | case TAS571X_INPUT_MUX_REG: |
64 | case TAS571X_CH4_SRC_SELECT_REG: | |
65 | case TAS571X_PWM_MUX_REG: | |
f7d3d2d8 PK |
66 | case TAS5717_CH1_RIGHT_CH_MIX_REG: |
67 | case TAS5717_CH1_LEFT_CH_MIX_REG: | |
68 | case TAS5717_CH2_LEFT_CH_MIX_REG: | |
69 | case TAS5717_CH2_RIGHT_CH_MIX_REG: | |
a593ed09 | 70 | return 4; |
3fd6e7d9 KC |
71 | default: |
72 | return 1; | |
73 | } | |
74 | } | |
75 | ||
76 | static int tas571x_reg_write(void *context, unsigned int reg, | |
77 | unsigned int value) | |
78 | { | |
79 | struct i2c_client *client = context; | |
80 | struct tas571x_private *priv = i2c_get_clientdata(client); | |
81 | unsigned int i, size; | |
82 | uint8_t buf[5]; | |
83 | int ret; | |
84 | ||
85 | size = tas571x_register_size(priv, reg); | |
86 | buf[0] = reg; | |
87 | ||
88 | for (i = size; i >= 1; --i) { | |
89 | buf[i] = value; | |
90 | value >>= 8; | |
91 | } | |
92 | ||
93 | ret = i2c_master_send(client, buf, size + 1); | |
94 | if (ret == size + 1) | |
95 | return 0; | |
96 | else if (ret < 0) | |
97 | return ret; | |
98 | else | |
99 | return -EIO; | |
100 | } | |
101 | ||
102 | static int tas571x_reg_read(void *context, unsigned int reg, | |
103 | unsigned int *value) | |
104 | { | |
105 | struct i2c_client *client = context; | |
106 | struct tas571x_private *priv = i2c_get_clientdata(client); | |
107 | uint8_t send_buf, recv_buf[4]; | |
108 | struct i2c_msg msgs[2]; | |
109 | unsigned int size; | |
110 | unsigned int i; | |
111 | int ret; | |
112 | ||
113 | size = tas571x_register_size(priv, reg); | |
114 | send_buf = reg; | |
115 | ||
116 | msgs[0].addr = client->addr; | |
117 | msgs[0].len = sizeof(send_buf); | |
118 | msgs[0].buf = &send_buf; | |
119 | msgs[0].flags = 0; | |
120 | ||
121 | msgs[1].addr = client->addr; | |
122 | msgs[1].len = size; | |
123 | msgs[1].buf = recv_buf; | |
124 | msgs[1].flags = I2C_M_RD; | |
125 | ||
126 | ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); | |
127 | if (ret < 0) | |
128 | return ret; | |
129 | else if (ret != ARRAY_SIZE(msgs)) | |
130 | return -EIO; | |
131 | ||
132 | *value = 0; | |
133 | ||
134 | for (i = 0; i < size; i++) { | |
135 | *value <<= 8; | |
136 | *value |= recv_buf[i]; | |
137 | } | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
4b9e385b PK |
142 | /* |
143 | * register write for 8- and 20-byte registers | |
144 | */ | |
145 | static int tas571x_reg_write_multiword(struct i2c_client *client, | |
146 | unsigned int reg, const long values[], size_t len) | |
147 | { | |
148 | size_t i; | |
149 | uint8_t *buf, *p; | |
150 | int ret; | |
151 | size_t send_size = 1 + len * sizeof(uint32_t); | |
152 | ||
153 | buf = kzalloc(send_size, GFP_KERNEL | GFP_DMA); | |
154 | if (!buf) | |
155 | return -ENOMEM; | |
156 | buf[0] = reg; | |
157 | ||
158 | for (i = 0, p = buf + 1; i < len; i++, p += sizeof(uint32_t)) | |
159 | put_unaligned_be32(values[i], p); | |
160 | ||
161 | ret = i2c_master_send(client, buf, send_size); | |
162 | ||
163 | kfree(buf); | |
164 | ||
165 | if (ret == send_size) | |
166 | return 0; | |
167 | else if (ret < 0) | |
168 | return ret; | |
169 | else | |
170 | return -EIO; | |
171 | } | |
172 | ||
173 | /* | |
174 | * register read for 8- and 20-byte registers | |
175 | */ | |
176 | static int tas571x_reg_read_multiword(struct i2c_client *client, | |
177 | unsigned int reg, long values[], size_t len) | |
178 | { | |
179 | unsigned int i; | |
180 | uint8_t send_buf; | |
181 | uint8_t *recv_buf, *p; | |
182 | struct i2c_msg msgs[2]; | |
183 | unsigned int recv_size = len * sizeof(uint32_t); | |
184 | int ret; | |
185 | ||
186 | recv_buf = kzalloc(recv_size, GFP_KERNEL | GFP_DMA); | |
187 | if (!recv_buf) | |
188 | return -ENOMEM; | |
189 | ||
190 | send_buf = reg; | |
191 | ||
192 | msgs[0].addr = client->addr; | |
193 | msgs[0].len = sizeof(send_buf); | |
194 | msgs[0].buf = &send_buf; | |
195 | msgs[0].flags = 0; | |
196 | ||
197 | msgs[1].addr = client->addr; | |
198 | msgs[1].len = recv_size; | |
199 | msgs[1].buf = recv_buf; | |
200 | msgs[1].flags = I2C_M_RD; | |
201 | ||
202 | ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); | |
203 | if (ret < 0) | |
204 | goto err_ret; | |
205 | else if (ret != ARRAY_SIZE(msgs)) { | |
206 | ret = -EIO; | |
207 | goto err_ret; | |
208 | } | |
209 | ||
210 | for (i = 0, p = recv_buf; i < len; i++, p += sizeof(uint32_t)) | |
211 | values[i] = get_unaligned_be32(p); | |
212 | ||
213 | err_ret: | |
214 | kfree(recv_buf); | |
215 | return ret; | |
216 | } | |
217 | ||
218 | /* | |
219 | * Integer array controls for setting biquad, mixer, DRC coefficients. | |
220 | * According to the datasheet each coefficient is effectively 26bits, | |
221 | * i.e. stored as 32bits, where bits [31:26] are ignored. | |
222 | * TI's TAS57xx Graphical Development Environment tool however produces | |
223 | * coefficients with more than 26 bits. For this reason we allow values | |
224 | * in the full 32-bits reange. | |
225 | * The coefficients are ordered as given in the TAS571x data sheet: | |
226 | * b0, b1, b2, a1, a2 | |
227 | */ | |
228 | ||
229 | static int tas571x_coefficient_info(struct snd_kcontrol *kcontrol, | |
230 | struct snd_ctl_elem_info *uinfo) | |
231 | { | |
232 | int numcoef = kcontrol->private_value >> 16; | |
233 | ||
234 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
235 | uinfo->count = numcoef; | |
236 | uinfo->value.integer.min = 0; | |
237 | uinfo->value.integer.max = 0xffffffff; | |
238 | return 0; | |
239 | } | |
240 | ||
241 | static int tas571x_coefficient_get(struct snd_kcontrol *kcontrol, | |
242 | struct snd_ctl_elem_value *ucontrol) | |
243 | { | |
2be04bab KM |
244 | struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); |
245 | struct i2c_client *i2c = to_i2c_client(component->dev); | |
4b9e385b PK |
246 | int numcoef = kcontrol->private_value >> 16; |
247 | int index = kcontrol->private_value & 0xffff; | |
248 | ||
249 | return tas571x_reg_read_multiword(i2c, index, | |
250 | ucontrol->value.integer.value, numcoef); | |
251 | } | |
252 | ||
253 | static int tas571x_coefficient_put(struct snd_kcontrol *kcontrol, | |
254 | struct snd_ctl_elem_value *ucontrol) | |
255 | { | |
2be04bab KM |
256 | struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); |
257 | struct i2c_client *i2c = to_i2c_client(component->dev); | |
4b9e385b PK |
258 | int numcoef = kcontrol->private_value >> 16; |
259 | int index = kcontrol->private_value & 0xffff; | |
260 | ||
261 | return tas571x_reg_write_multiword(i2c, index, | |
262 | ucontrol->value.integer.value, numcoef); | |
263 | } | |
264 | ||
3fd6e7d9 KC |
265 | static int tas571x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format) |
266 | { | |
2be04bab | 267 | struct tas571x_private *priv = snd_soc_component_get_drvdata(dai->component); |
3fd6e7d9 KC |
268 | |
269 | priv->format = format; | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
274 | static int tas571x_hw_params(struct snd_pcm_substream *substream, | |
275 | struct snd_pcm_hw_params *params, | |
276 | struct snd_soc_dai *dai) | |
277 | { | |
2be04bab | 278 | struct tas571x_private *priv = snd_soc_component_get_drvdata(dai->component); |
3fd6e7d9 KC |
279 | u32 val; |
280 | ||
281 | switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { | |
282 | case SND_SOC_DAIFMT_RIGHT_J: | |
283 | val = 0x00; | |
284 | break; | |
285 | case SND_SOC_DAIFMT_I2S: | |
286 | val = 0x03; | |
287 | break; | |
288 | case SND_SOC_DAIFMT_LEFT_J: | |
289 | val = 0x06; | |
290 | break; | |
291 | default: | |
292 | return -EINVAL; | |
293 | } | |
294 | ||
295 | if (params_width(params) >= 24) | |
296 | val += 2; | |
297 | else if (params_width(params) >= 20) | |
298 | val += 1; | |
299 | ||
300 | return regmap_update_bits(priv->regmap, TAS571X_SDI_REG, | |
301 | TAS571X_SDI_FMT_MASK, val); | |
302 | } | |
303 | ||
38803ce7 | 304 | static int tas571x_mute(struct snd_soc_dai *dai, int mute, int direction) |
04004850 | 305 | { |
2be04bab | 306 | struct snd_soc_component *component = dai->component; |
04004850 PK |
307 | u8 sysctl2; |
308 | int ret; | |
309 | ||
310 | sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0; | |
311 | ||
2be04bab | 312 | ret = snd_soc_component_update_bits(component, |
04004850 PK |
313 | TAS571X_SYS_CTRL_2_REG, |
314 | TAS571X_SYS_CTRL_2_SDN_MASK, | |
315 | sysctl2); | |
316 | usleep_range(1000, 2000); | |
317 | ||
318 | return ret; | |
319 | } | |
320 | ||
2be04bab | 321 | static int tas571x_set_bias_level(struct snd_soc_component *component, |
3fd6e7d9 KC |
322 | enum snd_soc_bias_level level) |
323 | { | |
2be04bab | 324 | struct tas571x_private *priv = snd_soc_component_get_drvdata(component); |
3fd6e7d9 KC |
325 | int ret; |
326 | ||
327 | switch (level) { | |
328 | case SND_SOC_BIAS_ON: | |
329 | break; | |
330 | case SND_SOC_BIAS_PREPARE: | |
331 | break; | |
332 | case SND_SOC_BIAS_STANDBY: | |
2be04bab | 333 | if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { |
3fd6e7d9 KC |
334 | if (!IS_ERR(priv->mclk)) { |
335 | ret = clk_prepare_enable(priv->mclk); | |
336 | if (ret) { | |
2be04bab | 337 | dev_err(component->dev, |
3fd6e7d9 KC |
338 | "Failed to enable master clock: %d\n", |
339 | ret); | |
340 | return ret; | |
341 | } | |
342 | } | |
3fd6e7d9 KC |
343 | } |
344 | break; | |
345 | case SND_SOC_BIAS_OFF: | |
3fd6e7d9 KC |
346 | if (!IS_ERR(priv->mclk)) |
347 | clk_disable_unprepare(priv->mclk); | |
348 | break; | |
349 | } | |
350 | ||
3fd6e7d9 KC |
351 | return 0; |
352 | } | |
353 | ||
354 | static const struct snd_soc_dai_ops tas571x_dai_ops = { | |
355 | .set_fmt = tas571x_set_dai_fmt, | |
356 | .hw_params = tas571x_hw_params, | |
38803ce7 KM |
357 | .mute_stream = tas571x_mute, |
358 | .no_capture_mute = 1, | |
3fd6e7d9 KC |
359 | }; |
360 | ||
4b9e385b PK |
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 | ||
3fd6e7d9 KC |
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 | ||
a593ed09 PK |
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 | ||
3fd6e7d9 KC |
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, | |
a593ed09 PK |
434 | .wr_table = &tas571x_write_regs, |
435 | .volatile_table = &tas571x_volatile_regs, | |
3fd6e7d9 KC |
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 | ||
f516d322 JB |
447 | static const struct regmap_range tas5707_volatile_regs_range[] = { |
448 | regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_ERR_STATUS_REG), | |
449 | regmap_reg_range(TAS571X_OSC_TRIM_REG, TAS571X_OSC_TRIM_REG), | |
450 | regmap_reg_range(TAS5707_CH1_BQ0_REG, TAS5707_CH2_BQ6_REG), | |
451 | }; | |
452 | ||
453 | static const struct regmap_access_table tas5707_volatile_regs = { | |
454 | .yes_ranges = tas5707_volatile_regs_range, | |
455 | .n_yes_ranges = ARRAY_SIZE(tas5707_volatile_regs_range), | |
456 | ||
457 | }; | |
458 | ||
459 | static const DECLARE_TLV_DB_SCALE(tas5707_volume_tlv, -7900, 50, 1); | |
460 | ||
461 | static const char * const tas5707_volume_slew_step_txt[] = { | |
462 | "256", "512", "1024", "2048", | |
463 | }; | |
464 | ||
465 | static const unsigned int tas5707_volume_slew_step_values[] = { | |
466 | 3, 0, 1, 2, | |
467 | }; | |
468 | ||
469 | static SOC_VALUE_ENUM_SINGLE_DECL(tas5707_volume_slew_step_enum, | |
470 | TAS571X_VOL_CFG_REG, 0, 0x3, | |
471 | tas5707_volume_slew_step_txt, | |
472 | tas5707_volume_slew_step_values); | |
473 | ||
474 | static const struct snd_kcontrol_new tas5707_controls[] = { | |
475 | SOC_SINGLE_TLV("Master Volume", | |
476 | TAS571X_MVOL_REG, | |
477 | 0, 0xff, 1, tas5707_volume_tlv), | |
478 | SOC_DOUBLE_R_TLV("Speaker Volume", | |
479 | TAS571X_CH1_VOL_REG, | |
480 | TAS571X_CH2_VOL_REG, | |
481 | 0, 0xff, 1, tas5707_volume_tlv), | |
482 | SOC_DOUBLE("Speaker Switch", | |
483 | TAS571X_SOFT_MUTE_REG, | |
484 | TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT, | |
485 | 1, 1), | |
486 | ||
487 | SOC_ENUM("Slew Rate Steps", tas5707_volume_slew_step_enum), | |
488 | ||
489 | BIQUAD_COEFS("CH1 - Biquad 0", TAS5707_CH1_BQ0_REG), | |
490 | BIQUAD_COEFS("CH1 - Biquad 1", TAS5707_CH1_BQ1_REG), | |
491 | BIQUAD_COEFS("CH1 - Biquad 2", TAS5707_CH1_BQ2_REG), | |
492 | BIQUAD_COEFS("CH1 - Biquad 3", TAS5707_CH1_BQ3_REG), | |
493 | BIQUAD_COEFS("CH1 - Biquad 4", TAS5707_CH1_BQ4_REG), | |
494 | BIQUAD_COEFS("CH1 - Biquad 5", TAS5707_CH1_BQ5_REG), | |
495 | BIQUAD_COEFS("CH1 - Biquad 6", TAS5707_CH1_BQ6_REG), | |
496 | ||
497 | BIQUAD_COEFS("CH2 - Biquad 0", TAS5707_CH2_BQ0_REG), | |
498 | BIQUAD_COEFS("CH2 - Biquad 1", TAS5707_CH2_BQ1_REG), | |
499 | BIQUAD_COEFS("CH2 - Biquad 2", TAS5707_CH2_BQ2_REG), | |
500 | BIQUAD_COEFS("CH2 - Biquad 3", TAS5707_CH2_BQ3_REG), | |
501 | BIQUAD_COEFS("CH2 - Biquad 4", TAS5707_CH2_BQ4_REG), | |
502 | BIQUAD_COEFS("CH2 - Biquad 5", TAS5707_CH2_BQ5_REG), | |
503 | BIQUAD_COEFS("CH2 - Biquad 6", TAS5707_CH2_BQ6_REG), | |
504 | }; | |
505 | ||
506 | static const struct reg_default tas5707_reg_defaults[] = { | |
507 | {TAS571X_CLK_CTRL_REG, 0x6c}, | |
508 | {TAS571X_DEV_ID_REG, 0x70}, | |
509 | {TAS571X_ERR_STATUS_REG, 0x00}, | |
510 | {TAS571X_SYS_CTRL_1_REG, 0xa0}, | |
511 | {TAS571X_SDI_REG, 0x05}, | |
512 | {TAS571X_SYS_CTRL_2_REG, 0x40}, | |
513 | {TAS571X_SOFT_MUTE_REG, 0x00}, | |
514 | {TAS571X_MVOL_REG, 0xff}, | |
515 | {TAS571X_CH1_VOL_REG, 0x30}, | |
516 | {TAS571X_CH2_VOL_REG, 0x30}, | |
517 | {TAS571X_VOL_CFG_REG, 0x91}, | |
518 | {TAS571X_MODULATION_LIMIT_REG, 0x02}, | |
519 | {TAS571X_IC_DELAY_CH1_REG, 0xac}, | |
520 | {TAS571X_IC_DELAY_CH2_REG, 0x54}, | |
521 | {TAS571X_IC_DELAY_CH3_REG, 0xac}, | |
522 | {TAS571X_IC_DELAY_CH4_REG, 0x54}, | |
523 | {TAS571X_START_STOP_PERIOD_REG, 0x0f}, | |
524 | {TAS571X_OSC_TRIM_REG, 0x82}, | |
525 | {TAS571X_BKND_ERR_REG, 0x02}, | |
526 | {TAS571X_INPUT_MUX_REG, 0x17772}, | |
527 | {TAS571X_PWM_MUX_REG, 0x1021345}, | |
528 | }; | |
529 | ||
530 | static const struct regmap_config tas5707_regmap_config = { | |
531 | .reg_bits = 8, | |
532 | .val_bits = 32, | |
533 | .max_register = 0xff, | |
534 | .reg_read = tas571x_reg_read, | |
535 | .reg_write = tas571x_reg_write, | |
536 | .reg_defaults = tas5707_reg_defaults, | |
537 | .num_reg_defaults = ARRAY_SIZE(tas5707_reg_defaults), | |
538 | .cache_type = REGCACHE_RBTREE, | |
539 | .wr_table = &tas571x_write_regs, | |
540 | .volatile_table = &tas5707_volatile_regs, | |
541 | }; | |
542 | ||
543 | static const struct tas571x_chip tas5707_chip = { | |
544 | .supply_names = tas5711_supply_names, | |
545 | .num_supply_names = ARRAY_SIZE(tas5711_supply_names), | |
546 | .controls = tas5707_controls, | |
547 | .num_controls = ARRAY_SIZE(tas5707_controls), | |
548 | .regmap_config = &tas5707_regmap_config, | |
549 | .vol_reg_size = 1, | |
550 | }; | |
551 | ||
3fd6e7d9 KC |
552 | static const char *const tas5717_supply_names[] = { |
553 | "AVDD", | |
554 | "DVDD", | |
555 | "HPVDD", | |
556 | "PVDD_AB", | |
557 | "PVDD_CD", | |
558 | }; | |
559 | ||
560 | static const DECLARE_TLV_DB_SCALE(tas5717_volume_tlv, -10375, 25, 0); | |
561 | ||
562 | static const struct snd_kcontrol_new tas5717_controls[] = { | |
563 | /* MVOL LSB is ignored - see comments in tas571x_i2c_probe() */ | |
564 | SOC_SINGLE_TLV("Master Volume", | |
565 | TAS571X_MVOL_REG, 1, 0x1ff, 1, | |
566 | tas5717_volume_tlv), | |
567 | SOC_DOUBLE_R_TLV("Speaker Volume", | |
568 | TAS571X_CH1_VOL_REG, TAS571X_CH2_VOL_REG, | |
569 | 1, 0x1ff, 1, tas5717_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), | |
4b9e385b | 574 | |
96069567 PK |
575 | SOC_DOUBLE_R_RANGE("CH1 Mixer Volume", |
576 | TAS5717_CH1_LEFT_CH_MIX_REG, | |
577 | TAS5717_CH1_RIGHT_CH_MIX_REG, | |
578 | 16, 0, 0x80, 0), | |
579 | ||
580 | SOC_DOUBLE_R_RANGE("CH2 Mixer Volume", | |
581 | TAS5717_CH2_LEFT_CH_MIX_REG, | |
582 | TAS5717_CH2_RIGHT_CH_MIX_REG, | |
583 | 16, 0, 0x80, 0), | |
584 | ||
4b9e385b PK |
585 | /* |
586 | * The biquads are named according to the register names. | |
587 | * Please note that TI's TAS57xx Graphical Development Environment | |
588 | * tool names them different. | |
589 | */ | |
590 | BIQUAD_COEFS("CH1 - Biquad 0", TAS5717_CH1_BQ0_REG), | |
591 | BIQUAD_COEFS("CH1 - Biquad 1", TAS5717_CH1_BQ1_REG), | |
592 | BIQUAD_COEFS("CH1 - Biquad 2", TAS5717_CH1_BQ2_REG), | |
593 | BIQUAD_COEFS("CH1 - Biquad 3", TAS5717_CH1_BQ3_REG), | |
594 | BIQUAD_COEFS("CH1 - Biquad 4", TAS5717_CH1_BQ4_REG), | |
595 | BIQUAD_COEFS("CH1 - Biquad 5", TAS5717_CH1_BQ5_REG), | |
596 | BIQUAD_COEFS("CH1 - Biquad 6", TAS5717_CH1_BQ6_REG), | |
597 | BIQUAD_COEFS("CH1 - Biquad 7", TAS5717_CH1_BQ7_REG), | |
598 | BIQUAD_COEFS("CH1 - Biquad 8", TAS5717_CH1_BQ8_REG), | |
599 | BIQUAD_COEFS("CH1 - Biquad 9", TAS5717_CH1_BQ9_REG), | |
600 | BIQUAD_COEFS("CH1 - Biquad 10", TAS5717_CH1_BQ10_REG), | |
601 | BIQUAD_COEFS("CH1 - Biquad 11", TAS5717_CH1_BQ11_REG), | |
602 | ||
603 | BIQUAD_COEFS("CH2 - Biquad 0", TAS5717_CH2_BQ0_REG), | |
604 | BIQUAD_COEFS("CH2 - Biquad 1", TAS5717_CH2_BQ1_REG), | |
605 | BIQUAD_COEFS("CH2 - Biquad 2", TAS5717_CH2_BQ2_REG), | |
606 | BIQUAD_COEFS("CH2 - Biquad 3", TAS5717_CH2_BQ3_REG), | |
607 | BIQUAD_COEFS("CH2 - Biquad 4", TAS5717_CH2_BQ4_REG), | |
608 | BIQUAD_COEFS("CH2 - Biquad 5", TAS5717_CH2_BQ5_REG), | |
609 | BIQUAD_COEFS("CH2 - Biquad 6", TAS5717_CH2_BQ6_REG), | |
610 | BIQUAD_COEFS("CH2 - Biquad 7", TAS5717_CH2_BQ7_REG), | |
611 | BIQUAD_COEFS("CH2 - Biquad 8", TAS5717_CH2_BQ8_REG), | |
612 | BIQUAD_COEFS("CH2 - Biquad 9", TAS5717_CH2_BQ9_REG), | |
613 | BIQUAD_COEFS("CH2 - Biquad 10", TAS5717_CH2_BQ10_REG), | |
614 | BIQUAD_COEFS("CH2 - Biquad 11", TAS5717_CH2_BQ11_REG), | |
615 | ||
616 | BIQUAD_COEFS("CH3 - Biquad 0", TAS5717_CH3_BQ0_REG), | |
617 | BIQUAD_COEFS("CH3 - Biquad 1", TAS5717_CH3_BQ1_REG), | |
618 | ||
619 | BIQUAD_COEFS("CH4 - Biquad 0", TAS5717_CH4_BQ0_REG), | |
620 | BIQUAD_COEFS("CH4 - Biquad 1", TAS5717_CH4_BQ1_REG), | |
3fd6e7d9 KC |
621 | }; |
622 | ||
623 | static const struct reg_default tas5717_reg_defaults[] = { | |
624 | { 0x04, 0x05 }, | |
625 | { 0x05, 0x40 }, | |
626 | { 0x06, 0x00 }, | |
627 | { 0x07, 0x03ff }, | |
628 | { 0x08, 0x00c0 }, | |
629 | { 0x09, 0x00c0 }, | |
630 | { 0x1b, 0x82 }, | |
f7d3d2d8 PK |
631 | { TAS5717_CH1_RIGHT_CH_MIX_REG, 0x0 }, |
632 | { TAS5717_CH1_LEFT_CH_MIX_REG, 0x800000}, | |
633 | { TAS5717_CH2_LEFT_CH_MIX_REG, 0x0 }, | |
634 | { TAS5717_CH2_RIGHT_CH_MIX_REG, 0x800000}, | |
3fd6e7d9 KC |
635 | }; |
636 | ||
637 | static const struct regmap_config tas5717_regmap_config = { | |
638 | .reg_bits = 8, | |
639 | .val_bits = 32, | |
640 | .max_register = 0xff, | |
641 | .reg_read = tas571x_reg_read, | |
642 | .reg_write = tas571x_reg_write, | |
643 | .reg_defaults = tas5717_reg_defaults, | |
644 | .num_reg_defaults = ARRAY_SIZE(tas5717_reg_defaults), | |
645 | .cache_type = REGCACHE_RBTREE, | |
a593ed09 PK |
646 | .wr_table = &tas571x_write_regs, |
647 | .volatile_table = &tas571x_volatile_regs, | |
3fd6e7d9 KC |
648 | }; |
649 | ||
650 | /* This entry is reused for tas5719 as the software interface is identical. */ | |
651 | static const struct tas571x_chip tas5717_chip = { | |
652 | .supply_names = tas5717_supply_names, | |
653 | .num_supply_names = ARRAY_SIZE(tas5717_supply_names), | |
654 | .controls = tas5717_controls, | |
655 | .num_controls = ARRAY_SIZE(tas5717_controls), | |
656 | .regmap_config = &tas5717_regmap_config, | |
657 | .vol_reg_size = 2, | |
658 | }; | |
659 | ||
23a282c4 PK |
660 | static const char *const tas5721_supply_names[] = { |
661 | "AVDD", | |
662 | "DVDD", | |
663 | "DRVDD", | |
664 | "PVDD", | |
665 | }; | |
666 | ||
667 | static const struct snd_kcontrol_new tas5721_controls[] = { | |
668 | SOC_SINGLE_TLV("Master Volume", | |
669 | TAS571X_MVOL_REG, | |
670 | 0, 0xff, 1, tas5711_volume_tlv), | |
671 | SOC_DOUBLE_R_TLV("Speaker Volume", | |
672 | TAS571X_CH1_VOL_REG, | |
673 | TAS571X_CH2_VOL_REG, | |
674 | 0, 0xff, 1, tas5711_volume_tlv), | |
675 | SOC_DOUBLE("Speaker Switch", | |
676 | TAS571X_SOFT_MUTE_REG, | |
677 | TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT, | |
678 | 1, 1), | |
679 | }; | |
680 | ||
681 | static const struct reg_default tas5721_reg_defaults[] = { | |
682 | {TAS571X_CLK_CTRL_REG, 0x6c}, | |
683 | {TAS571X_DEV_ID_REG, 0x00}, | |
684 | {TAS571X_ERR_STATUS_REG, 0x00}, | |
685 | {TAS571X_SYS_CTRL_1_REG, 0xa0}, | |
686 | {TAS571X_SDI_REG, 0x05}, | |
687 | {TAS571X_SYS_CTRL_2_REG, 0x40}, | |
688 | {TAS571X_SOFT_MUTE_REG, 0x00}, | |
689 | {TAS571X_MVOL_REG, 0xff}, | |
690 | {TAS571X_CH1_VOL_REG, 0x30}, | |
691 | {TAS571X_CH2_VOL_REG, 0x30}, | |
692 | {TAS571X_CH3_VOL_REG, 0x30}, | |
693 | {TAS571X_VOL_CFG_REG, 0x91}, | |
694 | {TAS571X_MODULATION_LIMIT_REG, 0x02}, | |
695 | {TAS571X_IC_DELAY_CH1_REG, 0xac}, | |
696 | {TAS571X_IC_DELAY_CH2_REG, 0x54}, | |
697 | {TAS571X_IC_DELAY_CH3_REG, 0xac}, | |
698 | {TAS571X_IC_DELAY_CH4_REG, 0x54}, | |
699 | {TAS571X_PWM_CH_SDN_GROUP_REG, 0x30}, | |
700 | {TAS571X_START_STOP_PERIOD_REG, 0x0f}, | |
701 | {TAS571X_OSC_TRIM_REG, 0x82}, | |
702 | {TAS571X_BKND_ERR_REG, 0x02}, | |
703 | {TAS571X_INPUT_MUX_REG, 0x17772}, | |
704 | {TAS571X_CH4_SRC_SELECT_REG, 0x4303}, | |
705 | {TAS571X_PWM_MUX_REG, 0x1021345}, | |
706 | }; | |
707 | ||
708 | static const struct regmap_config tas5721_regmap_config = { | |
709 | .reg_bits = 8, | |
710 | .val_bits = 32, | |
711 | .max_register = 0xff, | |
712 | .reg_read = tas571x_reg_read, | |
713 | .reg_write = tas571x_reg_write, | |
714 | .reg_defaults = tas5721_reg_defaults, | |
715 | .num_reg_defaults = ARRAY_SIZE(tas5721_reg_defaults), | |
716 | .cache_type = REGCACHE_RBTREE, | |
717 | .wr_table = &tas571x_write_regs, | |
718 | .volatile_table = &tas571x_volatile_regs, | |
719 | }; | |
720 | ||
721 | ||
722 | static const struct tas571x_chip tas5721_chip = { | |
723 | .supply_names = tas5721_supply_names, | |
724 | .num_supply_names = ARRAY_SIZE(tas5721_supply_names), | |
2f7e015c NH |
725 | .controls = tas5721_controls, |
726 | .num_controls = ARRAY_SIZE(tas5721_controls), | |
23a282c4 PK |
727 | .regmap_config = &tas5721_regmap_config, |
728 | .vol_reg_size = 1, | |
729 | }; | |
730 | ||
3fd6e7d9 KC |
731 | static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = { |
732 | SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0), | |
733 | SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0), | |
734 | ||
735 | SND_SOC_DAPM_OUTPUT("OUT_A"), | |
736 | SND_SOC_DAPM_OUTPUT("OUT_B"), | |
737 | SND_SOC_DAPM_OUTPUT("OUT_C"), | |
738 | SND_SOC_DAPM_OUTPUT("OUT_D"), | |
739 | }; | |
740 | ||
741 | static const struct snd_soc_dapm_route tas571x_dapm_routes[] = { | |
742 | { "DACL", NULL, "Playback" }, | |
743 | { "DACR", NULL, "Playback" }, | |
744 | ||
745 | { "OUT_A", NULL, "DACL" }, | |
746 | { "OUT_B", NULL, "DACL" }, | |
747 | { "OUT_C", NULL, "DACR" }, | |
748 | { "OUT_D", NULL, "DACR" }, | |
749 | }; | |
750 | ||
2be04bab KM |
751 | static const struct snd_soc_component_driver tas571x_component = { |
752 | .set_bias_level = tas571x_set_bias_level, | |
753 | .dapm_widgets = tas571x_dapm_widgets, | |
754 | .num_dapm_widgets = ARRAY_SIZE(tas571x_dapm_widgets), | |
755 | .dapm_routes = tas571x_dapm_routes, | |
756 | .num_dapm_routes = ARRAY_SIZE(tas571x_dapm_routes), | |
757 | .use_pmdown_time = 1, | |
758 | .endianness = 1, | |
759 | .non_legacy_dai_naming = 1, | |
3fd6e7d9 KC |
760 | }; |
761 | ||
762 | static struct snd_soc_dai_driver tas571x_dai = { | |
763 | .name = "tas571x-hifi", | |
764 | .playback = { | |
765 | .stream_name = "Playback", | |
766 | .channels_min = 2, | |
767 | .channels_max = 2, | |
768 | .rates = SNDRV_PCM_RATE_8000_48000, | |
769 | .formats = SNDRV_PCM_FMTBIT_S32_LE | | |
770 | SNDRV_PCM_FMTBIT_S24_LE | | |
771 | SNDRV_PCM_FMTBIT_S16_LE, | |
772 | }, | |
773 | .ops = &tas571x_dai_ops, | |
774 | }; | |
775 | ||
776 | static const struct of_device_id tas571x_of_match[]; | |
777 | ||
778 | static int tas571x_i2c_probe(struct i2c_client *client, | |
779 | const struct i2c_device_id *id) | |
780 | { | |
781 | struct tas571x_private *priv; | |
782 | struct device *dev = &client->dev; | |
97fceb4d | 783 | const struct of_device_id *of_id; |
3fd6e7d9 KC |
784 | int i, ret; |
785 | ||
786 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); | |
787 | if (!priv) | |
788 | return -ENOMEM; | |
789 | i2c_set_clientdata(client, priv); | |
790 | ||
97fceb4d | 791 | of_id = of_match_device(tas571x_of_match, dev); |
630e413d PK |
792 | if (of_id) |
793 | priv->chip = of_id->data; | |
794 | else | |
795 | priv->chip = (void *) id->driver_data; | |
3fd6e7d9 KC |
796 | |
797 | priv->mclk = devm_clk_get(dev, "mclk"); | |
798 | if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) { | |
799 | dev_err(dev, "Failed to request mclk: %ld\n", | |
800 | PTR_ERR(priv->mclk)); | |
801 | return PTR_ERR(priv->mclk); | |
802 | } | |
803 | ||
a029ef45 TI |
804 | if (WARN_ON(priv->chip->num_supply_names > TAS571X_MAX_SUPPLIES)) |
805 | return -EINVAL; | |
3fd6e7d9 KC |
806 | for (i = 0; i < priv->chip->num_supply_names; i++) |
807 | priv->supplies[i].supply = priv->chip->supply_names[i]; | |
808 | ||
809 | ret = devm_regulator_bulk_get(dev, priv->chip->num_supply_names, | |
810 | priv->supplies); | |
811 | if (ret) { | |
812 | dev_err(dev, "Failed to get supplies: %d\n", ret); | |
813 | return ret; | |
814 | } | |
815 | ret = regulator_bulk_enable(priv->chip->num_supply_names, | |
816 | priv->supplies); | |
817 | if (ret) { | |
818 | dev_err(dev, "Failed to enable supplies: %d\n", ret); | |
819 | return ret; | |
820 | } | |
821 | ||
822 | priv->regmap = devm_regmap_init(dev, NULL, client, | |
823 | priv->chip->regmap_config); | |
9df8ba7c PP |
824 | if (IS_ERR(priv->regmap)) { |
825 | ret = PTR_ERR(priv->regmap); | |
826 | goto disable_regs; | |
827 | } | |
3fd6e7d9 KC |
828 | |
829 | priv->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW); | |
830 | if (IS_ERR(priv->pdn_gpio)) { | |
831 | dev_err(dev, "error requesting pdn_gpio: %ld\n", | |
832 | PTR_ERR(priv->pdn_gpio)); | |
833 | return PTR_ERR(priv->pdn_gpio); | |
834 | } | |
835 | ||
836 | priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", | |
837 | GPIOD_OUT_HIGH); | |
838 | if (IS_ERR(priv->reset_gpio)) { | |
839 | dev_err(dev, "error requesting reset_gpio: %ld\n", | |
840 | PTR_ERR(priv->reset_gpio)); | |
841 | return PTR_ERR(priv->reset_gpio); | |
842 | } else if (priv->reset_gpio) { | |
843 | /* pulse the active low reset line for ~100us */ | |
844 | usleep_range(100, 200); | |
845 | gpiod_set_value(priv->reset_gpio, 0); | |
e54de7f5 | 846 | usleep_range(13500, 20000); |
3fd6e7d9 KC |
847 | } |
848 | ||
849 | ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0); | |
850 | if (ret) | |
9df8ba7c | 851 | goto disable_regs; |
3fd6e7d9 | 852 | |
5e549a0c | 853 | usleep_range(50000, 60000); |
3fd6e7d9 | 854 | |
2be04bab KM |
855 | memcpy(&priv->component_driver, &tas571x_component, sizeof(priv->component_driver)); |
856 | priv->component_driver.controls = priv->chip->controls; | |
857 | priv->component_driver.num_controls = priv->chip->num_controls; | |
3fd6e7d9 KC |
858 | |
859 | if (priv->chip->vol_reg_size == 2) { | |
860 | /* | |
861 | * The master volume defaults to 0x3ff (mute), but we ignore | |
862 | * (zero) the LSB because the hardware step size is 0.125 dB | |
863 | * and TLV_DB_SCALE_ITEM has a resolution of 0.01 dB. | |
864 | */ | |
865 | ret = regmap_update_bits(priv->regmap, TAS571X_MVOL_REG, 1, 0); | |
866 | if (ret) | |
9df8ba7c | 867 | goto disable_regs; |
3fd6e7d9 KC |
868 | } |
869 | ||
9df8ba7c | 870 | ret = devm_snd_soc_register_component(&client->dev, |
2be04bab | 871 | &priv->component_driver, |
3fd6e7d9 | 872 | &tas571x_dai, 1); |
9df8ba7c PP |
873 | if (ret) |
874 | goto disable_regs; | |
875 | ||
876 | return ret; | |
877 | ||
878 | disable_regs: | |
879 | regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies); | |
880 | return ret; | |
3fd6e7d9 KC |
881 | } |
882 | ||
883 | static int tas571x_i2c_remove(struct i2c_client *client) | |
884 | { | |
885 | struct tas571x_private *priv = i2c_get_clientdata(client); | |
886 | ||
3fd6e7d9 KC |
887 | regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies); |
888 | ||
889 | return 0; | |
890 | } | |
891 | ||
892 | static const struct of_device_id tas571x_of_match[] = { | |
f516d322 | 893 | { .compatible = "ti,tas5707", .data = &tas5707_chip, }, |
3fd6e7d9 KC |
894 | { .compatible = "ti,tas5711", .data = &tas5711_chip, }, |
895 | { .compatible = "ti,tas5717", .data = &tas5717_chip, }, | |
896 | { .compatible = "ti,tas5719", .data = &tas5717_chip, }, | |
23a282c4 | 897 | { .compatible = "ti,tas5721", .data = &tas5721_chip, }, |
3fd6e7d9 KC |
898 | { } |
899 | }; | |
900 | MODULE_DEVICE_TABLE(of, tas571x_of_match); | |
901 | ||
902 | static const struct i2c_device_id tas571x_i2c_id[] = { | |
f516d322 | 903 | { "tas5707", (kernel_ulong_t) &tas5707_chip }, |
630e413d PK |
904 | { "tas5711", (kernel_ulong_t) &tas5711_chip }, |
905 | { "tas5717", (kernel_ulong_t) &tas5717_chip }, | |
906 | { "tas5719", (kernel_ulong_t) &tas5717_chip }, | |
23a282c4 | 907 | { "tas5721", (kernel_ulong_t) &tas5721_chip }, |
3fd6e7d9 KC |
908 | { } |
909 | }; | |
910 | MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id); | |
911 | ||
912 | static struct i2c_driver tas571x_i2c_driver = { | |
913 | .driver = { | |
914 | .name = "tas571x", | |
915 | .of_match_table = of_match_ptr(tas571x_of_match), | |
916 | }, | |
917 | .probe = tas571x_i2c_probe, | |
918 | .remove = tas571x_i2c_remove, | |
919 | .id_table = tas571x_i2c_id, | |
920 | }; | |
921 | module_i2c_driver(tas571x_i2c_driver); | |
922 | ||
923 | MODULE_DESCRIPTION("ASoC TAS571x driver"); | |
924 | MODULE_AUTHOR("Kevin Cernekee <cernekee@chromium.org>"); | |
925 | MODULE_LICENSE("GPL"); |