]>
Commit | Line | Data |
---|---|---|
992bee40 IL |
1 | /* |
2 | * wm8741.c -- WM8741 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2010 Wolfson Microelectronics plc | |
5 | * | |
6 | * Author: Ian Lartey <ian@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/moduleparam.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/pm.h> | |
19 | #include <linux/i2c.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/regulator/consumer.h> | |
22 | #include <linux/slab.h> | |
23 | #include <sound/core.h> | |
24 | #include <sound/pcm.h> | |
25 | #include <sound/pcm_params.h> | |
26 | #include <sound/soc.h> | |
27 | #include <sound/soc-dapm.h> | |
28 | #include <sound/initval.h> | |
29 | #include <sound/tlv.h> | |
30 | ||
31 | #include "wm8741.h" | |
32 | ||
992bee40 IL |
33 | #define WM8741_NUM_SUPPLIES 2 |
34 | static const char *wm8741_supply_names[WM8741_NUM_SUPPLIES] = { | |
35 | "AVDD", | |
36 | "DVDD", | |
37 | }; | |
38 | ||
3fe4a5ee | 39 | #define WM8741_NUM_RATES 6 |
992bee40 IL |
40 | |
41 | /* codec private data */ | |
42 | struct wm8741_priv { | |
f0fba2ad | 43 | enum snd_soc_control_type control_type; |
992bee40 IL |
44 | u16 reg_cache[WM8741_REGISTER_COUNT]; |
45 | struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES]; | |
46 | unsigned int sysclk; | |
3fe4a5ee | 47 | struct snd_pcm_hw_constraint_list *sysclk_constraints; |
992bee40 IL |
48 | }; |
49 | ||
50 | static const u16 wm8741_reg_defaults[WM8741_REGISTER_COUNT] = { | |
51 | 0x0000, /* R0 - DACLLSB Attenuation */ | |
52 | 0x0000, /* R1 - DACLMSB Attenuation */ | |
53 | 0x0000, /* R2 - DACRLSB Attenuation */ | |
54 | 0x0000, /* R3 - DACRMSB Attenuation */ | |
55 | 0x0000, /* R4 - Volume Control */ | |
56 | 0x000A, /* R5 - Format Control */ | |
57 | 0x0000, /* R6 - Filter Control */ | |
58 | 0x0000, /* R7 - Mode Control 1 */ | |
59 | 0x0002, /* R8 - Mode Control 2 */ | |
60 | 0x0000, /* R9 - Reset */ | |
61 | 0x0002, /* R32 - ADDITONAL_CONTROL_1 */ | |
62 | }; | |
63 | ||
64 | ||
65 | static int wm8741_reset(struct snd_soc_codec *codec) | |
66 | { | |
67 | return snd_soc_write(codec, WM8741_RESET, 0); | |
68 | } | |
69 | ||
70 | static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, -12700, 13, 0); | |
71 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 400, 0); | |
72 | ||
73 | static const struct snd_kcontrol_new wm8741_snd_controls[] = { | |
74 | SOC_DOUBLE_R_TLV("Fine Playback Volume", WM8741_DACLLSB_ATTENUATION, | |
75 | WM8741_DACRLSB_ATTENUATION, 1, 255, 1, dac_tlv_fine), | |
76 | SOC_DOUBLE_R_TLV("Playback Volume", WM8741_DACLMSB_ATTENUATION, | |
77 | WM8741_DACRMSB_ATTENUATION, 0, 511, 1, dac_tlv), | |
78 | }; | |
79 | ||
80 | static const struct snd_soc_dapm_widget wm8741_dapm_widgets[] = { | |
81 | SND_SOC_DAPM_DAC("DACL", "Playback", SND_SOC_NOPM, 0, 0), | |
82 | SND_SOC_DAPM_DAC("DACR", "Playback", SND_SOC_NOPM, 0, 0), | |
83 | SND_SOC_DAPM_OUTPUT("VOUTLP"), | |
84 | SND_SOC_DAPM_OUTPUT("VOUTLN"), | |
85 | SND_SOC_DAPM_OUTPUT("VOUTRP"), | |
86 | SND_SOC_DAPM_OUTPUT("VOUTRN"), | |
87 | }; | |
88 | ||
89 | static const struct snd_soc_dapm_route intercon[] = { | |
90 | { "VOUTLP", NULL, "DACL" }, | |
91 | { "VOUTLN", NULL, "DACL" }, | |
92 | { "VOUTRP", NULL, "DACR" }, | |
93 | { "VOUTRN", NULL, "DACR" }, | |
94 | }; | |
95 | ||
96 | static int wm8741_add_widgets(struct snd_soc_codec *codec) | |
97 | { | |
ce6120cc | 98 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
992bee40 | 99 | |
ce6120cc LG |
100 | snd_soc_dapm_new_controls(dapm, wm8741_dapm_widgets, |
101 | ARRAY_SIZE(wm8741_dapm_widgets)); | |
102 | snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon)); | |
992bee40 IL |
103 | |
104 | return 0; | |
105 | } | |
106 | ||
107 | static struct { | |
108 | int value; | |
109 | int ratio; | |
110 | } lrclk_ratios[WM8741_NUM_RATES] = { | |
3fe4a5ee IL |
111 | { 1, 128 }, |
112 | { 2, 192 }, | |
113 | { 3, 256 }, | |
114 | { 4, 384 }, | |
115 | { 5, 512 }, | |
116 | { 6, 768 }, | |
117 | }; | |
118 | ||
119 | static unsigned int rates_11289[] = { | |
120 | 44100, 88235, | |
121 | }; | |
122 | ||
123 | static struct snd_pcm_hw_constraint_list constraints_11289 = { | |
124 | .count = ARRAY_SIZE(rates_11289), | |
125 | .list = rates_11289, | |
126 | }; | |
127 | ||
128 | static unsigned int rates_12288[] = { | |
129 | 32000, 48000, 96000, | |
130 | }; | |
131 | ||
132 | static struct snd_pcm_hw_constraint_list constraints_12288 = { | |
133 | .count = ARRAY_SIZE(rates_12288), | |
134 | .list = rates_12288, | |
135 | }; | |
136 | ||
137 | static unsigned int rates_16384[] = { | |
138 | 32000, | |
139 | }; | |
140 | ||
141 | static struct snd_pcm_hw_constraint_list constraints_16384 = { | |
142 | .count = ARRAY_SIZE(rates_16384), | |
143 | .list = rates_16384, | |
144 | }; | |
145 | ||
146 | static unsigned int rates_16934[] = { | |
147 | 44100, 88235, | |
148 | }; | |
149 | ||
150 | static struct snd_pcm_hw_constraint_list constraints_16934 = { | |
151 | .count = ARRAY_SIZE(rates_16934), | |
152 | .list = rates_16934, | |
153 | }; | |
154 | ||
155 | static unsigned int rates_18432[] = { | |
156 | 48000, 96000, | |
157 | }; | |
158 | ||
159 | static struct snd_pcm_hw_constraint_list constraints_18432 = { | |
160 | .count = ARRAY_SIZE(rates_18432), | |
161 | .list = rates_18432, | |
162 | }; | |
163 | ||
164 | static unsigned int rates_22579[] = { | |
165 | 44100, 88235, 1764000 | |
166 | }; | |
167 | ||
168 | static struct snd_pcm_hw_constraint_list constraints_22579 = { | |
169 | .count = ARRAY_SIZE(rates_22579), | |
170 | .list = rates_22579, | |
171 | }; | |
172 | ||
173 | static unsigned int rates_24576[] = { | |
174 | 32000, 48000, 96000, 192000 | |
175 | }; | |
176 | ||
177 | static struct snd_pcm_hw_constraint_list constraints_24576 = { | |
178 | .count = ARRAY_SIZE(rates_24576), | |
179 | .list = rates_24576, | |
180 | }; | |
181 | ||
182 | static unsigned int rates_36864[] = { | |
183 | 48000, 96000, 19200 | |
184 | }; | |
185 | ||
186 | static struct snd_pcm_hw_constraint_list constraints_36864 = { | |
187 | .count = ARRAY_SIZE(rates_36864), | |
188 | .list = rates_36864, | |
992bee40 IL |
189 | }; |
190 | ||
191 | ||
192 | static int wm8741_startup(struct snd_pcm_substream *substream, | |
193 | struct snd_soc_dai *dai) | |
194 | { | |
195 | struct snd_soc_codec *codec = dai->codec; | |
196 | struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); | |
197 | ||
198 | /* The set of sample rates that can be supported depends on the | |
199 | * MCLK supplied to the CODEC - enforce this. | |
200 | */ | |
201 | if (!wm8741->sysclk) { | |
202 | dev_err(codec->dev, | |
203 | "No MCLK configured, call set_sysclk() on init\n"); | |
204 | return -EINVAL; | |
205 | } | |
206 | ||
207 | snd_pcm_hw_constraint_list(substream->runtime, 0, | |
208 | SNDRV_PCM_HW_PARAM_RATE, | |
3fe4a5ee | 209 | wm8741->sysclk_constraints); |
992bee40 IL |
210 | |
211 | return 0; | |
212 | } | |
213 | ||
214 | static int wm8741_hw_params(struct snd_pcm_substream *substream, | |
215 | struct snd_pcm_hw_params *params, | |
216 | struct snd_soc_dai *dai) | |
217 | { | |
218 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 219 | struct snd_soc_codec *codec = rtd->codec; |
992bee40 IL |
220 | struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
221 | u16 iface = snd_soc_read(codec, WM8741_FORMAT_CONTROL) & 0x1FC; | |
222 | int i; | |
223 | ||
224 | /* Find a supported LRCLK ratio */ | |
225 | for (i = 0; i < ARRAY_SIZE(lrclk_ratios); i++) { | |
226 | if (wm8741->sysclk / params_rate(params) == | |
227 | lrclk_ratios[i].ratio) | |
228 | break; | |
229 | } | |
230 | ||
231 | /* Should never happen, should be handled by constraints */ | |
232 | if (i == ARRAY_SIZE(lrclk_ratios)) { | |
233 | dev_err(codec->dev, "MCLK/fs ratio %d unsupported\n", | |
234 | wm8741->sysclk / params_rate(params)); | |
235 | return -EINVAL; | |
236 | } | |
237 | ||
238 | /* bit size */ | |
239 | switch (params_format(params)) { | |
240 | case SNDRV_PCM_FORMAT_S16_LE: | |
241 | break; | |
242 | case SNDRV_PCM_FORMAT_S20_3LE: | |
243 | iface |= 0x0001; | |
244 | break; | |
245 | case SNDRV_PCM_FORMAT_S24_LE: | |
246 | iface |= 0x0002; | |
247 | break; | |
248 | case SNDRV_PCM_FORMAT_S32_LE: | |
249 | iface |= 0x0003; | |
250 | break; | |
251 | default: | |
252 | dev_dbg(codec->dev, "wm8741_hw_params: Unsupported bit size param = %d", | |
253 | params_format(params)); | |
254 | return -EINVAL; | |
255 | } | |
256 | ||
257 | dev_dbg(codec->dev, "wm8741_hw_params: bit size param = %d", | |
258 | params_format(params)); | |
259 | ||
260 | snd_soc_write(codec, WM8741_FORMAT_CONTROL, iface); | |
261 | return 0; | |
262 | } | |
263 | ||
264 | static int wm8741_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
265 | int clk_id, unsigned int freq, int dir) | |
266 | { | |
267 | struct snd_soc_codec *codec = codec_dai->codec; | |
268 | struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); | |
992bee40 IL |
269 | |
270 | dev_dbg(codec->dev, "wm8741_set_dai_sysclk info: freq=%dHz\n", freq); | |
271 | ||
3fe4a5ee IL |
272 | switch (freq) { |
273 | case 11289600: | |
274 | wm8741->sysclk_constraints = &constraints_11289; | |
275 | wm8741->sysclk = freq; | |
276 | return 0; | |
277 | ||
278 | case 12288000: | |
279 | wm8741->sysclk_constraints = &constraints_12288; | |
280 | wm8741->sysclk = freq; | |
281 | return 0; | |
282 | ||
283 | case 16384000: | |
284 | wm8741->sysclk_constraints = &constraints_16384; | |
285 | wm8741->sysclk = freq; | |
286 | return 0; | |
287 | ||
288 | case 16934400: | |
289 | wm8741->sysclk_constraints = &constraints_16934; | |
290 | wm8741->sysclk = freq; | |
291 | return 0; | |
292 | ||
293 | case 18432000: | |
294 | wm8741->sysclk_constraints = &constraints_18432; | |
295 | wm8741->sysclk = freq; | |
296 | return 0; | |
297 | ||
298 | case 22579200: | |
299 | case 33868800: | |
300 | wm8741->sysclk_constraints = &constraints_22579; | |
301 | wm8741->sysclk = freq; | |
302 | return 0; | |
303 | ||
304 | case 24576000: | |
305 | wm8741->sysclk_constraints = &constraints_24576; | |
306 | wm8741->sysclk = freq; | |
307 | return 0; | |
308 | ||
309 | case 36864000: | |
310 | wm8741->sysclk_constraints = &constraints_36864; | |
311 | wm8741->sysclk = freq; | |
312 | return 0; | |
992bee40 | 313 | } |
3fe4a5ee | 314 | return -EINVAL; |
992bee40 IL |
315 | } |
316 | ||
317 | static int wm8741_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
318 | unsigned int fmt) | |
319 | { | |
320 | struct snd_soc_codec *codec = codec_dai->codec; | |
321 | u16 iface = snd_soc_read(codec, WM8741_FORMAT_CONTROL) & 0x1C3; | |
322 | ||
323 | /* check master/slave audio interface */ | |
324 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
325 | case SND_SOC_DAIFMT_CBS_CFS: | |
326 | break; | |
327 | default: | |
328 | return -EINVAL; | |
329 | } | |
330 | ||
331 | /* interface format */ | |
332 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
333 | case SND_SOC_DAIFMT_I2S: | |
334 | iface |= 0x0008; | |
335 | break; | |
336 | case SND_SOC_DAIFMT_RIGHT_J: | |
337 | break; | |
338 | case SND_SOC_DAIFMT_LEFT_J: | |
339 | iface |= 0x0004; | |
340 | break; | |
341 | case SND_SOC_DAIFMT_DSP_A: | |
342 | iface |= 0x0003; | |
343 | break; | |
344 | case SND_SOC_DAIFMT_DSP_B: | |
345 | iface |= 0x0013; | |
346 | break; | |
347 | default: | |
348 | return -EINVAL; | |
349 | } | |
350 | ||
351 | /* clock inversion */ | |
352 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
353 | case SND_SOC_DAIFMT_NB_NF: | |
354 | break; | |
355 | case SND_SOC_DAIFMT_IB_IF: | |
356 | iface |= 0x0010; | |
357 | break; | |
358 | case SND_SOC_DAIFMT_IB_NF: | |
359 | iface |= 0x0020; | |
360 | break; | |
361 | case SND_SOC_DAIFMT_NB_IF: | |
362 | iface |= 0x0030; | |
363 | break; | |
364 | default: | |
365 | return -EINVAL; | |
366 | } | |
367 | ||
368 | ||
369 | dev_dbg(codec->dev, "wm8741_set_dai_fmt: Format=%x, Clock Inv=%x\n", | |
370 | fmt & SND_SOC_DAIFMT_FORMAT_MASK, | |
371 | ((fmt & SND_SOC_DAIFMT_INV_MASK))); | |
372 | ||
373 | snd_soc_write(codec, WM8741_FORMAT_CONTROL, iface); | |
374 | return 0; | |
375 | } | |
376 | ||
377 | #define WM8741_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ | |
378 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \ | |
379 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \ | |
380 | SNDRV_PCM_RATE_192000) | |
381 | ||
382 | #define WM8741_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
383 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
384 | ||
385 | static struct snd_soc_dai_ops wm8741_dai_ops = { | |
386 | .startup = wm8741_startup, | |
387 | .hw_params = wm8741_hw_params, | |
388 | .set_sysclk = wm8741_set_dai_sysclk, | |
389 | .set_fmt = wm8741_set_dai_fmt, | |
390 | }; | |
391 | ||
f0fba2ad | 392 | static struct snd_soc_dai_driver wm8741_dai = { |
30e2d368 | 393 | .name = "wm8741", |
992bee40 IL |
394 | .playback = { |
395 | .stream_name = "Playback", | |
396 | .channels_min = 2, /* Mono modes not yet supported */ | |
397 | .channels_max = 2, | |
398 | .rates = WM8741_RATES, | |
399 | .formats = WM8741_FORMATS, | |
400 | }, | |
401 | .ops = &wm8741_dai_ops, | |
402 | }; | |
992bee40 IL |
403 | |
404 | #ifdef CONFIG_PM | |
f0fba2ad | 405 | static int wm8741_resume(struct snd_soc_codec *codec) |
992bee40 | 406 | { |
992bee40 IL |
407 | u16 *cache = codec->reg_cache; |
408 | int i; | |
409 | ||
410 | /* RESTORE REG Cache */ | |
411 | for (i = 0; i < WM8741_REGISTER_COUNT; i++) { | |
412 | if (cache[i] == wm8741_reg_defaults[i] || WM8741_RESET == i) | |
413 | continue; | |
414 | snd_soc_write(codec, i, cache[i]); | |
415 | } | |
416 | return 0; | |
417 | } | |
418 | #else | |
419 | #define wm8741_suspend NULL | |
420 | #define wm8741_resume NULL | |
421 | #endif | |
422 | ||
f0fba2ad | 423 | static int wm8741_probe(struct snd_soc_codec *codec) |
992bee40 | 424 | { |
f0fba2ad | 425 | struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
992bee40 IL |
426 | int ret = 0; |
427 | ||
f0fba2ad LG |
428 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8741->control_type); |
429 | if (ret != 0) { | |
430 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
431 | return ret; | |
992bee40 IL |
432 | } |
433 | ||
f0fba2ad | 434 | ret = wm8741_reset(codec); |
992bee40 | 435 | if (ret < 0) { |
f0fba2ad LG |
436 | dev_err(codec->dev, "Failed to issue reset\n"); |
437 | return ret; | |
992bee40 IL |
438 | } |
439 | ||
f0fba2ad LG |
440 | /* Change some default settings - latch VU */ |
441 | wm8741->reg_cache[WM8741_DACLLSB_ATTENUATION] |= WM8741_UPDATELL; | |
442 | wm8741->reg_cache[WM8741_DACLMSB_ATTENUATION] |= WM8741_UPDATELM; | |
443 | wm8741->reg_cache[WM8741_DACRLSB_ATTENUATION] |= WM8741_UPDATERL; | |
444 | wm8741->reg_cache[WM8741_DACRLSB_ATTENUATION] |= WM8741_UPDATERM; | |
445 | ||
992bee40 IL |
446 | snd_soc_add_controls(codec, wm8741_snd_controls, |
447 | ARRAY_SIZE(wm8741_snd_controls)); | |
448 | wm8741_add_widgets(codec); | |
449 | ||
f0fba2ad | 450 | dev_dbg(codec->dev, "Successful registration\n"); |
992bee40 | 451 | return ret; |
992bee40 IL |
452 | } |
453 | ||
f0fba2ad | 454 | static struct snd_soc_codec_driver soc_codec_dev_wm8741 = { |
992bee40 | 455 | .probe = wm8741_probe, |
992bee40 | 456 | .resume = wm8741_resume, |
e5eec34c | 457 | .reg_cache_size = ARRAY_SIZE(wm8741_reg_defaults), |
f0fba2ad LG |
458 | .reg_word_size = sizeof(u16), |
459 | .reg_cache_default = &wm8741_reg_defaults, | |
992bee40 | 460 | }; |
992bee40 | 461 | |
f0fba2ad LG |
462 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
463 | static int wm8741_i2c_probe(struct i2c_client *i2c, | |
464 | const struct i2c_device_id *id) | |
992bee40 | 465 | { |
f0fba2ad LG |
466 | struct wm8741_priv *wm8741; |
467 | int ret, i; | |
992bee40 | 468 | |
f0fba2ad LG |
469 | wm8741 = kzalloc(sizeof(struct wm8741_priv), GFP_KERNEL); |
470 | if (wm8741 == NULL) | |
471 | return -ENOMEM; | |
992bee40 | 472 | |
992bee40 IL |
473 | for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++) |
474 | wm8741->supplies[i].supply = wm8741_supply_names[i]; | |
475 | ||
f0fba2ad | 476 | ret = regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies), |
992bee40 IL |
477 | wm8741->supplies); |
478 | if (ret != 0) { | |
f0fba2ad | 479 | dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); |
992bee40 IL |
480 | goto err; |
481 | } | |
482 | ||
483 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8741->supplies), | |
484 | wm8741->supplies); | |
485 | if (ret != 0) { | |
f0fba2ad | 486 | dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret); |
992bee40 IL |
487 | goto err_get; |
488 | } | |
489 | ||
f0fba2ad | 490 | i2c_set_clientdata(i2c, wm8741); |
f0fba2ad | 491 | wm8741->control_type = SND_SOC_I2C; |
992bee40 | 492 | |
f0fba2ad LG |
493 | ret = snd_soc_register_codec(&i2c->dev, |
494 | &soc_codec_dev_wm8741, &wm8741_dai, 1); | |
495 | if (ret < 0) | |
496 | goto err_enable; | |
497 | return ret; | |
992bee40 IL |
498 | |
499 | err_enable: | |
500 | regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); | |
501 | ||
502 | err_get: | |
503 | regulator_bulk_free(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); | |
992bee40 IL |
504 | err: |
505 | kfree(wm8741); | |
506 | return ret; | |
507 | } | |
508 | ||
f0fba2ad | 509 | static int wm8741_i2c_remove(struct i2c_client *client) |
992bee40 IL |
510 | { |
511 | struct wm8741_priv *wm8741 = i2c_get_clientdata(client); | |
f0fba2ad LG |
512 | |
513 | snd_soc_unregister_codec(&client->dev); | |
514 | regulator_bulk_free(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); | |
515 | kfree(i2c_get_clientdata(client)); | |
992bee40 IL |
516 | return 0; |
517 | } | |
518 | ||
519 | static const struct i2c_device_id wm8741_i2c_id[] = { | |
520 | { "wm8741", 0 }, | |
521 | { } | |
522 | }; | |
523 | MODULE_DEVICE_TABLE(i2c, wm8741_i2c_id); | |
524 | ||
992bee40 IL |
525 | static struct i2c_driver wm8741_i2c_driver = { |
526 | .driver = { | |
f0fba2ad | 527 | .name = "wm8741-codec", |
992bee40 IL |
528 | .owner = THIS_MODULE, |
529 | }, | |
530 | .probe = wm8741_i2c_probe, | |
f0fba2ad | 531 | .remove = wm8741_i2c_remove, |
992bee40 IL |
532 | .id_table = wm8741_i2c_id, |
533 | }; | |
534 | #endif | |
535 | ||
536 | static int __init wm8741_modinit(void) | |
537 | { | |
f0fba2ad LG |
538 | int ret = 0; |
539 | ||
992bee40 IL |
540 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
541 | ret = i2c_add_driver(&wm8741_i2c_driver); | |
3fe4a5ee | 542 | if (ret != 0) |
f0fba2ad | 543 | pr_err("Failed to register WM8741 I2C driver: %d\n", ret); |
992bee40 | 544 | #endif |
f0fba2ad LG |
545 | |
546 | return ret; | |
992bee40 IL |
547 | } |
548 | module_init(wm8741_modinit); | |
549 | ||
550 | static void __exit wm8741_exit(void) | |
551 | { | |
552 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
553 | i2c_del_driver(&wm8741_i2c_driver); | |
554 | #endif | |
555 | } | |
556 | module_exit(wm8741_exit); | |
557 | ||
558 | MODULE_DESCRIPTION("ASoC WM8741 driver"); | |
559 | MODULE_AUTHOR("Ian Lartey <ian@opensource.wolfsonmicro.com>"); | |
560 | MODULE_LICENSE("GPL"); |