Commit | Line | Data |
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493b67ef PU |
1 | /* |
2 | * ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver | |
3 | * | |
4 | * Copyright (C) Nokia Corporation | |
5 | * | |
6 | * Author: Peter Ujfalusi <peter.ujfalusi@nokia.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
20 | * 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/device.h> | |
26 | #include <linux/i2c.h> | |
27 | #include <linux/gpio.h> | |
7c4e6492 | 28 | #include <linux/regulator/consumer.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
493b67ef PU |
30 | #include <sound/tpa6130a2-plat.h> |
31 | #include <sound/soc.h> | |
32 | #include <sound/soc-dapm.h> | |
33 | #include <sound/tlv.h> | |
34 | ||
35 | #include "tpa6130a2.h" | |
36 | ||
ebab1b1d | 37 | static struct i2c_client *tpa6130a2_client; |
493b67ef | 38 | |
7c4e6492 IK |
39 | #define TPA6130A2_NUM_SUPPLIES 2 |
40 | static const char *tpa6130a2_supply_names[TPA6130A2_NUM_SUPPLIES] = { | |
41 | "CPVSS", | |
42 | "Vdd", | |
43 | }; | |
44 | ||
2138301e IK |
45 | static const char *tpa6140a2_supply_names[TPA6130A2_NUM_SUPPLIES] = { |
46 | "HPVdd", | |
47 | "AVdd", | |
48 | }; | |
49 | ||
493b67ef PU |
50 | /* This struct is used to save the context */ |
51 | struct tpa6130a2_data { | |
52 | struct mutex mutex; | |
53 | unsigned char regs[TPA6130A2_CACHEREGNUM]; | |
7c4e6492 | 54 | struct regulator_bulk_data supplies[TPA6130A2_NUM_SUPPLIES]; |
493b67ef PU |
55 | int power_gpio; |
56 | unsigned char power_state; | |
57 | }; | |
58 | ||
59 | static int tpa6130a2_i2c_read(int reg) | |
60 | { | |
61 | struct tpa6130a2_data *data; | |
62 | int val; | |
63 | ||
64 | BUG_ON(tpa6130a2_client == NULL); | |
65 | data = i2c_get_clientdata(tpa6130a2_client); | |
66 | ||
67 | /* If powered off, return the cached value */ | |
68 | if (data->power_state) { | |
69 | val = i2c_smbus_read_byte_data(tpa6130a2_client, reg); | |
70 | if (val < 0) | |
71 | dev_err(&tpa6130a2_client->dev, "Read failed\n"); | |
72 | else | |
73 | data->regs[reg] = val; | |
74 | } else { | |
75 | val = data->regs[reg]; | |
76 | } | |
77 | ||
78 | return val; | |
79 | } | |
80 | ||
81 | static int tpa6130a2_i2c_write(int reg, u8 value) | |
82 | { | |
83 | struct tpa6130a2_data *data; | |
84 | int val = 0; | |
85 | ||
86 | BUG_ON(tpa6130a2_client == NULL); | |
87 | data = i2c_get_clientdata(tpa6130a2_client); | |
88 | ||
89 | if (data->power_state) { | |
90 | val = i2c_smbus_write_byte_data(tpa6130a2_client, reg, value); | |
91 | if (val < 0) | |
92 | dev_err(&tpa6130a2_client->dev, "Write failed\n"); | |
93 | } | |
94 | ||
95 | /* Either powered on or off, we save the context */ | |
96 | data->regs[reg] = value; | |
97 | ||
98 | return val; | |
99 | } | |
100 | ||
101 | static u8 tpa6130a2_read(int reg) | |
102 | { | |
103 | struct tpa6130a2_data *data; | |
104 | ||
105 | BUG_ON(tpa6130a2_client == NULL); | |
106 | data = i2c_get_clientdata(tpa6130a2_client); | |
107 | ||
108 | return data->regs[reg]; | |
109 | } | |
110 | ||
111 | static void tpa6130a2_initialize(void) | |
112 | { | |
113 | struct tpa6130a2_data *data; | |
114 | int i; | |
115 | ||
116 | BUG_ON(tpa6130a2_client == NULL); | |
117 | data = i2c_get_clientdata(tpa6130a2_client); | |
118 | ||
119 | for (i = 1; i < TPA6130A2_REG_VERSION; i++) | |
120 | tpa6130a2_i2c_write(i, data->regs[i]); | |
121 | } | |
122 | ||
7c4e6492 | 123 | static int tpa6130a2_power(int power) |
493b67ef PU |
124 | { |
125 | struct tpa6130a2_data *data; | |
126 | u8 val; | |
7c4e6492 | 127 | int ret; |
493b67ef PU |
128 | |
129 | BUG_ON(tpa6130a2_client == NULL); | |
130 | data = i2c_get_clientdata(tpa6130a2_client); | |
131 | ||
132 | mutex_lock(&data->mutex); | |
133 | if (power) { | |
134 | /* Power on */ | |
7c4e6492 | 135 | if (data->power_gpio >= 0) |
493b67ef | 136 | gpio_set_value(data->power_gpio, 1); |
7c4e6492 IK |
137 | |
138 | ret = regulator_bulk_enable(ARRAY_SIZE(data->supplies), | |
139 | data->supplies); | |
140 | if (ret != 0) { | |
141 | dev_err(&tpa6130a2_client->dev, | |
142 | "Failed to enable supplies: %d\n", ret); | |
143 | goto exit; | |
493b67ef | 144 | } |
7c4e6492 IK |
145 | |
146 | data->power_state = 1; | |
147 | tpa6130a2_initialize(); | |
148 | ||
493b67ef PU |
149 | /* Clear SWS */ |
150 | val = tpa6130a2_read(TPA6130A2_REG_CONTROL); | |
151 | val &= ~TPA6130A2_SWS; | |
152 | tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val); | |
153 | } else { | |
154 | /* set SWS */ | |
155 | val = tpa6130a2_read(TPA6130A2_REG_CONTROL); | |
156 | val |= TPA6130A2_SWS; | |
157 | tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val); | |
7c4e6492 | 158 | |
493b67ef | 159 | /* Power off */ |
7c4e6492 | 160 | if (data->power_gpio >= 0) |
493b67ef | 161 | gpio_set_value(data->power_gpio, 0); |
7c4e6492 IK |
162 | |
163 | ret = regulator_bulk_disable(ARRAY_SIZE(data->supplies), | |
164 | data->supplies); | |
165 | if (ret != 0) { | |
166 | dev_err(&tpa6130a2_client->dev, | |
167 | "Failed to disable supplies: %d\n", ret); | |
168 | goto exit; | |
493b67ef | 169 | } |
7c4e6492 IK |
170 | |
171 | data->power_state = 0; | |
493b67ef | 172 | } |
7c4e6492 IK |
173 | |
174 | exit: | |
493b67ef | 175 | mutex_unlock(&data->mutex); |
7c4e6492 | 176 | return ret; |
493b67ef PU |
177 | } |
178 | ||
179 | static int tpa6130a2_get_reg(struct snd_kcontrol *kcontrol, | |
180 | struct snd_ctl_elem_value *ucontrol) | |
181 | { | |
182 | struct soc_mixer_control *mc = | |
183 | (struct soc_mixer_control *)kcontrol->private_value; | |
184 | struct tpa6130a2_data *data; | |
185 | unsigned int reg = mc->reg; | |
186 | unsigned int shift = mc->shift; | |
187 | unsigned int mask = mc->max; | |
188 | unsigned int invert = mc->invert; | |
189 | ||
190 | BUG_ON(tpa6130a2_client == NULL); | |
191 | data = i2c_get_clientdata(tpa6130a2_client); | |
192 | ||
193 | mutex_lock(&data->mutex); | |
194 | ||
195 | ucontrol->value.integer.value[0] = | |
196 | (tpa6130a2_read(reg) >> shift) & mask; | |
197 | ||
198 | if (invert) | |
199 | ucontrol->value.integer.value[0] = | |
200 | mask - ucontrol->value.integer.value[0]; | |
201 | ||
202 | mutex_unlock(&data->mutex); | |
203 | return 0; | |
204 | } | |
205 | ||
206 | static int tpa6130a2_set_reg(struct snd_kcontrol *kcontrol, | |
207 | struct snd_ctl_elem_value *ucontrol) | |
208 | { | |
209 | struct soc_mixer_control *mc = | |
210 | (struct soc_mixer_control *)kcontrol->private_value; | |
211 | struct tpa6130a2_data *data; | |
212 | unsigned int reg = mc->reg; | |
213 | unsigned int shift = mc->shift; | |
214 | unsigned int mask = mc->max; | |
215 | unsigned int invert = mc->invert; | |
216 | unsigned int val = (ucontrol->value.integer.value[0] & mask); | |
217 | unsigned int val_reg; | |
218 | ||
219 | BUG_ON(tpa6130a2_client == NULL); | |
220 | data = i2c_get_clientdata(tpa6130a2_client); | |
221 | ||
222 | if (invert) | |
223 | val = mask - val; | |
224 | ||
225 | mutex_lock(&data->mutex); | |
226 | ||
227 | val_reg = tpa6130a2_read(reg); | |
228 | if (((val_reg >> shift) & mask) == val) { | |
229 | mutex_unlock(&data->mutex); | |
230 | return 0; | |
231 | } | |
232 | ||
233 | val_reg &= ~(mask << shift); | |
234 | val_reg |= val << shift; | |
235 | tpa6130a2_i2c_write(reg, val_reg); | |
236 | ||
237 | mutex_unlock(&data->mutex); | |
238 | ||
239 | return 1; | |
240 | } | |
241 | ||
242 | /* | |
243 | * TPA6130 volume. From -59.5 to 4 dB with increasing step size when going | |
244 | * down in gain. | |
245 | */ | |
246 | static const unsigned int tpa6130_tlv[] = { | |
247 | TLV_DB_RANGE_HEAD(10), | |
248 | 0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0), | |
249 | 2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0), | |
250 | 4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0), | |
251 | 6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0), | |
252 | 8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0), | |
253 | 10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0), | |
254 | 12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0), | |
255 | 14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0), | |
256 | 21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0), | |
257 | 38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0), | |
258 | }; | |
259 | ||
260 | static const struct snd_kcontrol_new tpa6130a2_controls[] = { | |
261 | SOC_SINGLE_EXT_TLV("TPA6130A2 Headphone Playback Volume", | |
262 | TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0, | |
263 | tpa6130a2_get_reg, tpa6130a2_set_reg, | |
264 | tpa6130_tlv), | |
265 | }; | |
266 | ||
267 | /* | |
268 | * Enable or disable channel (left or right) | |
269 | * The bit number for mute and amplifier are the same per channel: | |
270 | * bit 6: Right channel | |
271 | * bit 7: Left channel | |
272 | * in both registers. | |
273 | */ | |
274 | static void tpa6130a2_channel_enable(u8 channel, int enable) | |
275 | { | |
493b67ef PU |
276 | u8 val; |
277 | ||
493b67ef PU |
278 | if (enable) { |
279 | /* Enable channel */ | |
280 | /* Enable amplifier */ | |
281 | val = tpa6130a2_read(TPA6130A2_REG_CONTROL); | |
282 | val |= channel; | |
283 | tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val); | |
284 | ||
285 | /* Unmute channel */ | |
286 | val = tpa6130a2_read(TPA6130A2_REG_VOL_MUTE); | |
287 | val &= ~channel; | |
288 | tpa6130a2_i2c_write(TPA6130A2_REG_VOL_MUTE, val); | |
289 | } else { | |
290 | /* Disable channel */ | |
291 | /* Mute channel */ | |
292 | val = tpa6130a2_read(TPA6130A2_REG_VOL_MUTE); | |
293 | val |= channel; | |
294 | tpa6130a2_i2c_write(TPA6130A2_REG_VOL_MUTE, val); | |
295 | ||
296 | /* Disable amplifier */ | |
297 | val = tpa6130a2_read(TPA6130A2_REG_CONTROL); | |
298 | val &= ~channel; | |
299 | tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val); | |
300 | } | |
301 | } | |
302 | ||
303 | static int tpa6130a2_left_event(struct snd_soc_dapm_widget *w, | |
304 | struct snd_kcontrol *kcontrol, int event) | |
305 | { | |
306 | switch (event) { | |
307 | case SND_SOC_DAPM_POST_PMU: | |
308 | tpa6130a2_channel_enable(TPA6130A2_HP_EN_L, 1); | |
309 | break; | |
310 | case SND_SOC_DAPM_POST_PMD: | |
311 | tpa6130a2_channel_enable(TPA6130A2_HP_EN_L, 0); | |
312 | break; | |
313 | } | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static int tpa6130a2_right_event(struct snd_soc_dapm_widget *w, | |
318 | struct snd_kcontrol *kcontrol, int event) | |
319 | { | |
320 | switch (event) { | |
321 | case SND_SOC_DAPM_POST_PMU: | |
322 | tpa6130a2_channel_enable(TPA6130A2_HP_EN_R, 1); | |
323 | break; | |
324 | case SND_SOC_DAPM_POST_PMD: | |
325 | tpa6130a2_channel_enable(TPA6130A2_HP_EN_R, 0); | |
326 | break; | |
327 | } | |
328 | return 0; | |
329 | } | |
330 | ||
331 | static int tpa6130a2_supply_event(struct snd_soc_dapm_widget *w, | |
332 | struct snd_kcontrol *kcontrol, int event) | |
333 | { | |
7c4e6492 IK |
334 | int ret = 0; |
335 | ||
493b67ef PU |
336 | switch (event) { |
337 | case SND_SOC_DAPM_POST_PMU: | |
7c4e6492 | 338 | ret = tpa6130a2_power(1); |
493b67ef PU |
339 | break; |
340 | case SND_SOC_DAPM_POST_PMD: | |
7c4e6492 | 341 | ret = tpa6130a2_power(0); |
493b67ef PU |
342 | break; |
343 | } | |
7c4e6492 | 344 | return ret; |
493b67ef PU |
345 | } |
346 | ||
347 | static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets[] = { | |
348 | SND_SOC_DAPM_PGA_E("TPA6130A2 Left", SND_SOC_NOPM, | |
349 | 0, 0, NULL, 0, tpa6130a2_left_event, | |
350 | SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD), | |
351 | SND_SOC_DAPM_PGA_E("TPA6130A2 Right", SND_SOC_NOPM, | |
352 | 0, 0, NULL, 0, tpa6130a2_right_event, | |
353 | SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD), | |
354 | SND_SOC_DAPM_SUPPLY("TPA6130A2 Enable", SND_SOC_NOPM, | |
355 | 0, 0, tpa6130a2_supply_event, | |
356 | SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD), | |
357 | /* Outputs */ | |
358 | SND_SOC_DAPM_HP("TPA6130A2 Headphone Left", NULL), | |
359 | SND_SOC_DAPM_HP("TPA6130A2 Headphone Right", NULL), | |
360 | }; | |
361 | ||
362 | static const struct snd_soc_dapm_route audio_map[] = { | |
363 | {"TPA6130A2 Headphone Left", NULL, "TPA6130A2 Left"}, | |
364 | {"TPA6130A2 Headphone Right", NULL, "TPA6130A2 Right"}, | |
365 | ||
366 | {"TPA6130A2 Headphone Left", NULL, "TPA6130A2 Enable"}, | |
367 | {"TPA6130A2 Headphone Right", NULL, "TPA6130A2 Enable"}, | |
368 | }; | |
369 | ||
370 | int tpa6130a2_add_controls(struct snd_soc_codec *codec) | |
371 | { | |
372 | snd_soc_dapm_new_controls(codec, tpa6130a2_dapm_widgets, | |
373 | ARRAY_SIZE(tpa6130a2_dapm_widgets)); | |
374 | ||
375 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
376 | ||
377 | return snd_soc_add_controls(codec, tpa6130a2_controls, | |
378 | ARRAY_SIZE(tpa6130a2_controls)); | |
379 | ||
380 | } | |
381 | EXPORT_SYMBOL_GPL(tpa6130a2_add_controls); | |
382 | ||
735fe4cf MB |
383 | static int __devinit tpa6130a2_probe(struct i2c_client *client, |
384 | const struct i2c_device_id *id) | |
493b67ef PU |
385 | { |
386 | struct device *dev; | |
387 | struct tpa6130a2_data *data; | |
388 | struct tpa6130a2_platform_data *pdata; | |
7c4e6492 | 389 | int i, ret; |
493b67ef PU |
390 | |
391 | dev = &client->dev; | |
392 | ||
393 | if (client->dev.platform_data == NULL) { | |
394 | dev_err(dev, "Platform data not set\n"); | |
395 | dump_stack(); | |
396 | return -ENODEV; | |
397 | } | |
398 | ||
399 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
400 | if (data == NULL) { | |
401 | dev_err(dev, "Can not allocate memory\n"); | |
402 | return -ENOMEM; | |
403 | } | |
404 | ||
405 | tpa6130a2_client = client; | |
406 | ||
407 | i2c_set_clientdata(tpa6130a2_client, data); | |
408 | ||
ebab1b1d | 409 | pdata = client->dev.platform_data; |
493b67ef PU |
410 | data->power_gpio = pdata->power_gpio; |
411 | ||
412 | mutex_init(&data->mutex); | |
413 | ||
414 | /* Set default register values */ | |
415 | data->regs[TPA6130A2_REG_CONTROL] = TPA6130A2_SWS; | |
416 | data->regs[TPA6130A2_REG_VOL_MUTE] = TPA6130A2_MUTE_R | | |
417 | TPA6130A2_MUTE_L; | |
418 | ||
419 | if (data->power_gpio >= 0) { | |
420 | ret = gpio_request(data->power_gpio, "tpa6130a2 enable"); | |
421 | if (ret < 0) { | |
422 | dev_err(dev, "Failed to request power GPIO (%d)\n", | |
423 | data->power_gpio); | |
7c4e6492 | 424 | goto err_gpio; |
493b67ef PU |
425 | } |
426 | gpio_direction_output(data->power_gpio, 0); | |
493b67ef PU |
427 | } |
428 | ||
2138301e IK |
429 | switch (pdata->id) { |
430 | case TPA6130A2: | |
431 | for (i = 0; i < ARRAY_SIZE(data->supplies); i++) | |
432 | data->supplies[i].supply = tpa6130a2_supply_names[i]; | |
433 | break; | |
434 | case TPA6140A2: | |
435 | for (i = 0; i < ARRAY_SIZE(data->supplies); i++) | |
436 | data->supplies[i].supply = tpa6140a2_supply_names[i];; | |
437 | break; | |
438 | default: | |
439 | dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n", | |
440 | pdata->id); | |
441 | for (i = 0; i < ARRAY_SIZE(data->supplies); i++) | |
442 | data->supplies[i].supply = tpa6130a2_supply_names[i]; | |
443 | } | |
7c4e6492 IK |
444 | |
445 | ret = regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), | |
446 | data->supplies); | |
447 | if (ret != 0) { | |
448 | dev_err(dev, "Failed to request supplies: %d\n", ret); | |
449 | goto err_regulator; | |
450 | } | |
451 | ||
452 | ret = tpa6130a2_power(1); | |
453 | if (ret != 0) | |
454 | goto err_power; | |
455 | ||
493b67ef PU |
456 | |
457 | /* Read version */ | |
458 | ret = tpa6130a2_i2c_read(TPA6130A2_REG_VERSION) & | |
459 | TPA6130A2_VERSION_MASK; | |
460 | if ((ret != 1) && (ret != 2)) | |
461 | dev_warn(dev, "UNTESTED version detected (%d)\n", ret); | |
462 | ||
463 | /* Disable the chip */ | |
7c4e6492 IK |
464 | ret = tpa6130a2_power(0); |
465 | if (ret != 0) | |
466 | goto err_power; | |
493b67ef PU |
467 | |
468 | return 0; | |
7c4e6492 IK |
469 | |
470 | err_power: | |
471 | regulator_bulk_free(ARRAY_SIZE(data->supplies), data->supplies); | |
472 | err_regulator: | |
473 | if (data->power_gpio >= 0) | |
474 | gpio_free(data->power_gpio); | |
475 | err_gpio: | |
493b67ef PU |
476 | kfree(data); |
477 | i2c_set_clientdata(tpa6130a2_client, NULL); | |
ebab1b1d | 478 | tpa6130a2_client = NULL; |
493b67ef PU |
479 | |
480 | return ret; | |
481 | } | |
482 | ||
735fe4cf | 483 | static int __devexit tpa6130a2_remove(struct i2c_client *client) |
493b67ef PU |
484 | { |
485 | struct tpa6130a2_data *data = i2c_get_clientdata(client); | |
486 | ||
487 | tpa6130a2_power(0); | |
488 | ||
489 | if (data->power_gpio >= 0) | |
490 | gpio_free(data->power_gpio); | |
7c4e6492 IK |
491 | |
492 | regulator_bulk_free(ARRAY_SIZE(data->supplies), data->supplies); | |
493 | ||
493b67ef | 494 | kfree(data); |
ebab1b1d | 495 | tpa6130a2_client = NULL; |
493b67ef PU |
496 | |
497 | return 0; | |
498 | } | |
499 | ||
500 | static const struct i2c_device_id tpa6130a2_id[] = { | |
501 | { "tpa6130a2", 0 }, | |
502 | { } | |
503 | }; | |
504 | MODULE_DEVICE_TABLE(i2c, tpa6130a2_id); | |
505 | ||
506 | static struct i2c_driver tpa6130a2_i2c_driver = { | |
507 | .driver = { | |
508 | .name = "tpa6130a2", | |
509 | .owner = THIS_MODULE, | |
510 | }, | |
511 | .probe = tpa6130a2_probe, | |
512 | .remove = __devexit_p(tpa6130a2_remove), | |
513 | .id_table = tpa6130a2_id, | |
514 | }; | |
515 | ||
516 | static int __init tpa6130a2_init(void) | |
517 | { | |
518 | return i2c_add_driver(&tpa6130a2_i2c_driver); | |
519 | } | |
520 | ||
521 | static void __exit tpa6130a2_exit(void) | |
522 | { | |
523 | i2c_del_driver(&tpa6130a2_i2c_driver); | |
524 | } | |
525 | ||
526 | MODULE_AUTHOR("Peter Ujfalusi"); | |
527 | MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver"); | |
528 | MODULE_LICENSE("GPL"); | |
529 | ||
530 | module_init(tpa6130a2_init); | |
531 | module_exit(tpa6130a2_exit); |