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5df7f71d DM |
1 | /* |
2 | * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier | |
3 | * | |
4 | * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com | |
5 | * | |
6 | * Author: Dan Murphy <dmurphy@ti.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 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/i2c.h> | |
22 | #include <linux/gpio.h> | |
23 | #include <linux/of_gpio.h> | |
24 | #include <linux/pm_runtime.h> | |
25 | #include <linux/regmap.h> | |
26 | #include <linux/slab.h> | |
27 | ||
28 | #include <linux/gpio/consumer.h> | |
29 | #include <linux/regulator/consumer.h> | |
30 | ||
31 | #include <sound/pcm.h> | |
32 | #include <sound/pcm_params.h> | |
33 | #include <sound/soc.h> | |
34 | #include <sound/soc-dapm.h> | |
35 | #include <sound/tlv.h> | |
36 | #include <sound/tas2552-plat.h> | |
37 | ||
38 | #include "tas2552.h" | |
39 | ||
40 | static struct reg_default tas2552_reg_defs[] = { | |
41 | {TAS2552_CFG_1, 0x22}, | |
42 | {TAS2552_CFG_3, 0x80}, | |
43 | {TAS2552_DOUT, 0x00}, | |
44 | {TAS2552_OUTPUT_DATA, 0xc0}, | |
45 | {TAS2552_PDM_CFG, 0x01}, | |
46 | {TAS2552_PGA_GAIN, 0x00}, | |
47 | {TAS2552_BOOST_PT_CTRL, 0x0f}, | |
48 | {TAS2552_RESERVED_0D, 0x00}, | |
49 | {TAS2552_LIMIT_RATE_HYS, 0x08}, | |
50 | {TAS2552_CFG_2, 0xef}, | |
51 | {TAS2552_SER_CTRL_1, 0x00}, | |
52 | {TAS2552_SER_CTRL_2, 0x00}, | |
53 | {TAS2552_PLL_CTRL_1, 0x10}, | |
54 | {TAS2552_PLL_CTRL_2, 0x00}, | |
55 | {TAS2552_PLL_CTRL_3, 0x00}, | |
56 | {TAS2552_BTIP, 0x8f}, | |
57 | {TAS2552_BTS_CTRL, 0x80}, | |
58 | {TAS2552_LIMIT_RELEASE, 0x04}, | |
59 | {TAS2552_LIMIT_INT_COUNT, 0x00}, | |
60 | {TAS2552_EDGE_RATE_CTRL, 0x40}, | |
61 | {TAS2552_VBAT_DATA, 0x00}, | |
62 | }; | |
63 | ||
64 | #define TAS2552_NUM_SUPPLIES 3 | |
65 | static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = { | |
66 | "vbat", /* vbat voltage */ | |
67 | "iovdd", /* I/O Voltage */ | |
68 | "avdd", /* Analog DAC Voltage */ | |
69 | }; | |
70 | ||
71 | struct tas2552_data { | |
72 | struct snd_soc_codec *codec; | |
73 | struct regmap *regmap; | |
74 | struct i2c_client *tas2552_client; | |
75 | struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES]; | |
76 | struct gpio_desc *enable_gpio; | |
77 | unsigned char regs[TAS2552_VBAT_DATA]; | |
78 | unsigned int mclk; | |
79 | }; | |
80 | ||
81 | static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown) | |
82 | { | |
83 | u8 cfg1_reg; | |
84 | ||
85 | if (sw_shutdown) | |
86 | cfg1_reg = 0; | |
87 | else | |
88 | cfg1_reg = TAS2552_SWS_MASK; | |
89 | ||
90 | snd_soc_update_bits(tas_data->codec, TAS2552_CFG_1, | |
91 | TAS2552_SWS_MASK, cfg1_reg); | |
92 | } | |
93 | ||
94 | static int tas2552_hw_params(struct snd_pcm_substream *substream, | |
95 | struct snd_pcm_hw_params *params, | |
96 | struct snd_soc_dai *dai) | |
97 | { | |
98 | struct snd_soc_codec *codec = dai->codec; | |
99 | struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev); | |
100 | int sample_rate, pll_clk; | |
101 | int d; | |
102 | u8 p, j; | |
103 | ||
104 | /* Turn on Class D amplifier */ | |
105 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_CLASSD_EN_MASK, | |
106 | TAS2552_CLASSD_EN); | |
107 | ||
108 | if (!tas2552->mclk) | |
109 | return -EINVAL; | |
110 | ||
111 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0); | |
112 | ||
113 | if (tas2552->mclk == TAS2552_245MHZ_CLK || | |
114 | tas2552->mclk == TAS2552_225MHZ_CLK) { | |
115 | /* By pass the PLL configuration */ | |
116 | snd_soc_update_bits(codec, TAS2552_PLL_CTRL_2, | |
117 | TAS2552_PLL_BYPASS_MASK, | |
118 | TAS2552_PLL_BYPASS); | |
119 | } else { | |
120 | /* Fill in the PLL control registers for J & D | |
121 | * PLL_CLK = (.5 * freq * J.D) / 2^p | |
122 | * Need to fill in J and D here based on incoming freq | |
123 | */ | |
124 | p = snd_soc_read(codec, TAS2552_PLL_CTRL_1); | |
125 | p = (p >> 7); | |
126 | sample_rate = params_rate(params); | |
127 | ||
128 | if (sample_rate == 48000) | |
129 | pll_clk = TAS2552_245MHZ_CLK; | |
130 | else if (sample_rate == 44100) | |
131 | pll_clk = TAS2552_225MHZ_CLK; | |
132 | else { | |
133 | dev_vdbg(codec->dev, "Substream sample rate is not found %i\n", | |
134 | params_rate(params)); | |
135 | return -EINVAL; | |
136 | } | |
137 | ||
138 | j = (pll_clk * 2 * (1 << p)) / tas2552->mclk; | |
139 | d = (pll_clk * 2 * (1 << p)) % tas2552->mclk; | |
140 | ||
141 | snd_soc_update_bits(codec, TAS2552_PLL_CTRL_1, | |
142 | TAS2552_PLL_J_MASK, j); | |
143 | snd_soc_write(codec, TAS2552_PLL_CTRL_2, | |
144 | (d >> 7) & TAS2552_PLL_D_UPPER_MASK); | |
145 | snd_soc_write(codec, TAS2552_PLL_CTRL_3, | |
146 | d & TAS2552_PLL_D_LOWER_MASK); | |
147 | ||
148 | } | |
149 | ||
150 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, | |
151 | TAS2552_PLL_ENABLE); | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
157 | { | |
158 | struct snd_soc_codec *codec = dai->codec; | |
159 | u8 serial_format; | |
160 | u8 serial_control_mask; | |
161 | ||
162 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
163 | case SND_SOC_DAIFMT_CBS_CFS: | |
164 | serial_format = 0x00; | |
165 | break; | |
166 | case SND_SOC_DAIFMT_CBS_CFM: | |
167 | serial_format = TAS2552_WORD_CLK_MASK; | |
168 | break; | |
169 | case SND_SOC_DAIFMT_CBM_CFS: | |
170 | serial_format = TAS2552_BIT_CLK_MASK; | |
171 | break; | |
172 | case SND_SOC_DAIFMT_CBM_CFM: | |
173 | serial_format = (TAS2552_BIT_CLK_MASK | TAS2552_WORD_CLK_MASK); | |
174 | break; | |
175 | default: | |
176 | dev_vdbg(codec->dev, "DAI Format master is not found\n"); | |
177 | return -EINVAL; | |
178 | } | |
179 | ||
180 | serial_control_mask = TAS2552_BIT_CLK_MASK | TAS2552_WORD_CLK_MASK; | |
181 | ||
182 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
183 | case SND_SOC_DAIFMT_I2S: | |
184 | serial_format &= TAS2552_DAIFMT_I2S_MASK; | |
185 | break; | |
186 | case SND_SOC_DAIFMT_DSP_A: | |
187 | serial_format |= TAS2552_DAIFMT_DSP; | |
188 | break; | |
189 | case SND_SOC_DAIFMT_RIGHT_J: | |
190 | serial_format |= TAS2552_DAIFMT_RIGHT_J; | |
191 | break; | |
192 | case SND_SOC_DAIFMT_LEFT_J: | |
193 | serial_format |= TAS2552_DAIFMT_LEFT_J; | |
194 | break; | |
195 | default: | |
196 | dev_vdbg(codec->dev, "DAI Format is not found\n"); | |
197 | return -EINVAL; | |
198 | } | |
199 | ||
200 | if (fmt & SND_SOC_DAIFMT_FORMAT_MASK) | |
201 | serial_control_mask |= TAS2552_DATA_FORMAT_MASK; | |
202 | ||
203 | snd_soc_update_bits(codec, TAS2552_SER_CTRL_1, serial_control_mask, | |
204 | serial_format); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, | |
210 | unsigned int freq, int dir) | |
211 | { | |
212 | struct snd_soc_codec *codec = dai->codec; | |
213 | struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev); | |
214 | ||
215 | tas2552->mclk = freq; | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | static int tas2552_mute(struct snd_soc_dai *dai, int mute) | |
221 | { | |
222 | u8 cfg1_reg; | |
223 | struct snd_soc_codec *codec = dai->codec; | |
224 | ||
225 | if (mute) | |
226 | cfg1_reg = TAS2552_MUTE_MASK; | |
227 | else | |
228 | cfg1_reg = ~TAS2552_MUTE_MASK; | |
229 | ||
230 | snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_MUTE_MASK, cfg1_reg); | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | #ifdef CONFIG_PM_RUNTIME | |
236 | static int tas2552_runtime_suspend(struct device *dev) | |
237 | { | |
238 | struct tas2552_data *tas2552 = dev_get_drvdata(dev); | |
239 | ||
240 | tas2552_sw_shutdown(tas2552, 0); | |
241 | ||
242 | if (tas2552->enable_gpio) | |
243 | gpiod_set_value(tas2552->enable_gpio, 0); | |
244 | ||
245 | regcache_cache_only(tas2552->regmap, true); | |
246 | regcache_mark_dirty(tas2552->regmap); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | static int tas2552_runtime_resume(struct device *dev) | |
252 | { | |
253 | struct tas2552_data *tas2552 = dev_get_drvdata(dev); | |
254 | ||
255 | if (tas2552->enable_gpio) | |
256 | gpiod_set_value(tas2552->enable_gpio, 1); | |
257 | ||
258 | tas2552_sw_shutdown(tas2552, 1); | |
259 | ||
260 | regcache_cache_only(tas2552->regmap, false); | |
261 | regcache_sync(tas2552->regmap); | |
262 | ||
263 | return 0; | |
264 | } | |
265 | #endif | |
266 | ||
267 | static const struct dev_pm_ops tas2552_pm = { | |
268 | SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume, | |
269 | NULL) | |
270 | }; | |
271 | ||
272 | static void tas2552_shutdown(struct snd_pcm_substream *substream, | |
273 | struct snd_soc_dai *dai) | |
274 | { | |
275 | struct snd_soc_codec *codec = dai->codec; | |
276 | ||
277 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0); | |
278 | } | |
279 | ||
280 | static struct snd_soc_dai_ops tas2552_speaker_dai_ops = { | |
281 | .hw_params = tas2552_hw_params, | |
282 | .set_sysclk = tas2552_set_dai_sysclk, | |
283 | .set_fmt = tas2552_set_dai_fmt, | |
284 | .shutdown = tas2552_shutdown, | |
285 | .digital_mute = tas2552_mute, | |
286 | }; | |
287 | ||
288 | /* Formats supported by TAS2552 driver. */ | |
289 | #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
290 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
291 | ||
292 | /* TAS2552 dai structure. */ | |
293 | static struct snd_soc_dai_driver tas2552_dai[] = { | |
294 | { | |
295 | .name = "tas2552-amplifier", | |
296 | .playback = { | |
297 | .stream_name = "Speaker", | |
298 | .channels_min = 2, | |
299 | .channels_max = 2, | |
300 | .rates = SNDRV_PCM_RATE_8000_192000, | |
301 | .formats = TAS2552_FORMATS, | |
302 | }, | |
303 | .ops = &tas2552_speaker_dai_ops, | |
304 | }, | |
305 | }; | |
306 | ||
307 | /* | |
308 | * DAC digital volumes. From -7 to 24 dB in 1 dB steps | |
309 | */ | |
310 | static DECLARE_TLV_DB_SCALE(dac_tlv, -7, 100, 24); | |
311 | ||
312 | static const struct snd_kcontrol_new tas2552_snd_controls[] = { | |
313 | SOC_SINGLE_TLV("Speaker Driver Playback Volume", | |
314 | TAS2552_PGA_GAIN, 0, 0x1f, 1, dac_tlv), | |
315 | }; | |
316 | ||
317 | static const struct reg_default tas2552_init_regs[] = { | |
318 | { TAS2552_RESERVED_0D, 0xc0 }, | |
319 | }; | |
320 | ||
321 | static int tas2552_codec_probe(struct snd_soc_codec *codec) | |
322 | { | |
323 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); | |
324 | int ret; | |
325 | ||
326 | tas2552->codec = codec; | |
327 | ||
328 | ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), | |
329 | tas2552->supplies); | |
330 | ||
331 | if (ret != 0) { | |
332 | dev_err(codec->dev, "Failed to enable supplies: %d\n", | |
333 | ret); | |
334 | return ret; | |
335 | } | |
336 | ||
337 | if (tas2552->enable_gpio) | |
338 | gpiod_set_value(tas2552->enable_gpio, 1); | |
339 | ||
340 | ret = pm_runtime_get_sync(codec->dev); | |
341 | if (ret < 0) { | |
342 | dev_err(codec->dev, "Enabling device failed: %d\n", | |
343 | ret); | |
344 | goto probe_fail; | |
345 | } | |
346 | ||
347 | snd_soc_write(codec, TAS2552_CFG_1, TAS2552_MUTE_MASK | | |
348 | TAS2552_PLL_SRC_BCLK); | |
349 | snd_soc_write(codec, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL | | |
350 | TAS2552_DIN_SRC_SEL_AVG_L_R | TAS2552_88_96KHZ); | |
351 | snd_soc_write(codec, TAS2552_DOUT, TAS2552_PDM_DATA_I); | |
352 | snd_soc_write(codec, TAS2552_OUTPUT_DATA, TAS2552_PDM_DATA_V_I | 0x8); | |
353 | snd_soc_write(codec, TAS2552_PDM_CFG, TAS2552_PDM_BCLK_SEL); | |
354 | snd_soc_write(codec, TAS2552_BOOST_PT_CTRL, TAS2552_APT_DELAY_200 | | |
355 | TAS2552_APT_THRESH_2_1_7); | |
356 | ||
357 | ret = regmap_register_patch(tas2552->regmap, tas2552_init_regs, | |
358 | ARRAY_SIZE(tas2552_init_regs)); | |
359 | if (ret != 0) { | |
360 | dev_err(codec->dev, "Failed to write init registers: %d\n", | |
361 | ret); | |
362 | goto patch_fail; | |
363 | } | |
364 | ||
365 | snd_soc_write(codec, TAS2552_CFG_2, TAS2552_CLASSD_EN | | |
366 | TAS2552_BOOST_EN | TAS2552_APT_EN | | |
367 | TAS2552_LIM_EN); | |
368 | return 0; | |
369 | ||
370 | patch_fail: | |
371 | pm_runtime_put(codec->dev); | |
372 | probe_fail: | |
373 | if (tas2552->enable_gpio) | |
374 | gpiod_set_value(tas2552->enable_gpio, 0); | |
375 | ||
376 | regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), | |
377 | tas2552->supplies); | |
378 | return -EIO; | |
379 | } | |
380 | ||
381 | static int tas2552_codec_remove(struct snd_soc_codec *codec) | |
382 | { | |
383 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); | |
384 | ||
385 | if (tas2552->enable_gpio) | |
386 | gpiod_set_value(tas2552->enable_gpio, 0); | |
387 | ||
388 | return 0; | |
389 | }; | |
390 | ||
391 | #ifdef CONFIG_PM | |
392 | static int tas2552_suspend(struct snd_soc_codec *codec) | |
393 | { | |
394 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); | |
395 | int ret; | |
396 | ||
397 | ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), | |
398 | tas2552->supplies); | |
399 | ||
400 | if (ret != 0) | |
401 | dev_err(codec->dev, "Failed to disable supplies: %d\n", | |
402 | ret); | |
403 | return 0; | |
404 | } | |
405 | ||
406 | static int tas2552_resume(struct snd_soc_codec *codec) | |
407 | { | |
408 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); | |
409 | int ret; | |
410 | ||
411 | ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), | |
412 | tas2552->supplies); | |
413 | ||
414 | if (ret != 0) { | |
415 | dev_err(codec->dev, "Failed to enable supplies: %d\n", | |
416 | ret); | |
417 | } | |
418 | ||
419 | return 0; | |
420 | } | |
421 | #else | |
422 | #define tas2552_suspend NULL | |
423 | #define tas2552_resume NULL | |
424 | #endif | |
425 | ||
426 | static struct snd_soc_codec_driver soc_codec_dev_tas2552 = { | |
427 | .probe = tas2552_codec_probe, | |
428 | .remove = tas2552_codec_remove, | |
429 | .suspend = tas2552_suspend, | |
430 | .resume = tas2552_resume, | |
431 | .controls = tas2552_snd_controls, | |
432 | .num_controls = ARRAY_SIZE(tas2552_snd_controls), | |
433 | }; | |
434 | ||
435 | static const struct regmap_config tas2552_regmap_config = { | |
436 | .reg_bits = 8, | |
437 | .val_bits = 8, | |
438 | ||
439 | .max_register = TAS2552_MAX_REG, | |
440 | .reg_defaults = tas2552_reg_defs, | |
441 | .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs), | |
442 | .cache_type = REGCACHE_RBTREE, | |
443 | }; | |
444 | ||
445 | static int tas2552_probe(struct i2c_client *client, | |
446 | const struct i2c_device_id *id) | |
447 | { | |
448 | struct device *dev; | |
449 | struct tas2552_data *data; | |
450 | int ret; | |
451 | int i; | |
452 | ||
453 | dev = &client->dev; | |
454 | data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); | |
455 | if (data == NULL) | |
456 | return -ENOMEM; | |
457 | ||
458 | data->enable_gpio = devm_gpiod_get(dev, "enable"); | |
459 | if (IS_ERR(data->enable_gpio)) { | |
460 | ret = PTR_ERR(data->enable_gpio); | |
461 | if (ret != -ENOENT && ret != -ENOSYS) | |
462 | return ret; | |
463 | ||
464 | data->enable_gpio = NULL; | |
465 | } else { | |
466 | gpiod_direction_output(data->enable_gpio, 0); | |
467 | } | |
468 | ||
469 | data->tas2552_client = client; | |
470 | data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config); | |
471 | if (IS_ERR(data->regmap)) { | |
472 | ret = PTR_ERR(data->regmap); | |
473 | dev_err(&client->dev, "Failed to allocate register map: %d\n", | |
474 | ret); | |
475 | return ret; | |
476 | } | |
477 | ||
478 | for (i = 0; i < ARRAY_SIZE(data->supplies); i++) | |
479 | data->supplies[i].supply = tas2552_supply_names[i]; | |
480 | ||
481 | ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), | |
482 | data->supplies); | |
483 | if (ret != 0) | |
484 | dev_err(dev, "Failed to request supplies: %d\n", ret); | |
485 | ||
486 | pm_runtime_set_active(&client->dev); | |
487 | pm_runtime_set_autosuspend_delay(&client->dev, 1000); | |
488 | pm_runtime_use_autosuspend(&client->dev); | |
489 | pm_runtime_enable(&client->dev); | |
490 | pm_runtime_mark_last_busy(&client->dev); | |
491 | pm_runtime_put_sync_autosuspend(&client->dev); | |
492 | ||
493 | dev_set_drvdata(&client->dev, data); | |
494 | ||
495 | ret = snd_soc_register_codec(&client->dev, | |
496 | &soc_codec_dev_tas2552, | |
497 | tas2552_dai, ARRAY_SIZE(tas2552_dai)); | |
498 | if (ret < 0) | |
499 | dev_err(&client->dev, "Failed to register codec: %d\n", ret); | |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
504 | static int tas2552_i2c_remove(struct i2c_client *client) | |
505 | { | |
506 | snd_soc_unregister_codec(&client->dev); | |
507 | return 0; | |
508 | } | |
509 | ||
510 | static const struct i2c_device_id tas2552_id[] = { | |
511 | { "tas2552", 0 }, | |
512 | { } | |
513 | }; | |
514 | MODULE_DEVICE_TABLE(i2c, tas2552_id); | |
515 | ||
516 | #if IS_ENABLED(CONFIG_OF) | |
517 | static const struct of_device_id tas2552_of_match[] = { | |
518 | { .compatible = "ti,tas2552", }, | |
519 | {}, | |
520 | }; | |
521 | MODULE_DEVICE_TABLE(of, tas2552_of_match); | |
522 | #endif | |
523 | ||
524 | static struct i2c_driver tas2552_i2c_driver = { | |
525 | .driver = { | |
526 | .name = "tas2552", | |
527 | .owner = THIS_MODULE, | |
528 | .of_match_table = of_match_ptr(tas2552_of_match), | |
529 | .pm = &tas2552_pm, | |
530 | }, | |
531 | .probe = tas2552_probe, | |
532 | .remove = tas2552_i2c_remove, | |
533 | .id_table = tas2552_id, | |
534 | }; | |
535 | ||
536 | module_i2c_driver(tas2552_i2c_driver); | |
537 | ||
538 | MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>"); | |
539 | MODULE_DESCRIPTION("TAS2552 Audio amplifier driver"); | |
540 | MODULE_LICENSE("GPL"); |