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1 | /* |
2 | * wm9081.c -- WM9081 ALSA SoC Audio driver | |
3 | * | |
4 | * Author: Mark Brown | |
5 | * | |
6 | * Copyright 2009 Wolfson Microelectronics plc | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
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 <sound/core.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/soc.h> | |
25 | #include <sound/soc-dapm.h> | |
26 | #include <sound/initval.h> | |
27 | #include <sound/tlv.h> | |
28 | ||
29 | #include <sound/wm9081.h> | |
30 | #include "wm9081.h" | |
31 | ||
32 | static u16 wm9081_reg_defaults[] = { | |
33 | 0x0000, /* R0 - Software Reset */ | |
34 | 0x0000, /* R1 */ | |
35 | 0x00B9, /* R2 - Analogue Lineout */ | |
36 | 0x00B9, /* R3 - Analogue Speaker PGA */ | |
37 | 0x0001, /* R4 - VMID Control */ | |
38 | 0x0068, /* R5 - Bias Control 1 */ | |
39 | 0x0000, /* R6 */ | |
40 | 0x0000, /* R7 - Analogue Mixer */ | |
41 | 0x0000, /* R8 - Anti Pop Control */ | |
42 | 0x01DB, /* R9 - Analogue Speaker 1 */ | |
43 | 0x0018, /* R10 - Analogue Speaker 2 */ | |
44 | 0x0180, /* R11 - Power Management */ | |
45 | 0x0000, /* R12 - Clock Control 1 */ | |
46 | 0x0038, /* R13 - Clock Control 2 */ | |
47 | 0x4000, /* R14 - Clock Control 3 */ | |
48 | 0x0000, /* R15 */ | |
49 | 0x0000, /* R16 - FLL Control 1 */ | |
50 | 0x0200, /* R17 - FLL Control 2 */ | |
51 | 0x0000, /* R18 - FLL Control 3 */ | |
52 | 0x0204, /* R19 - FLL Control 4 */ | |
53 | 0x0000, /* R20 - FLL Control 5 */ | |
54 | 0x0000, /* R21 */ | |
55 | 0x0000, /* R22 - Audio Interface 1 */ | |
56 | 0x0002, /* R23 - Audio Interface 2 */ | |
57 | 0x0008, /* R24 - Audio Interface 3 */ | |
58 | 0x0022, /* R25 - Audio Interface 4 */ | |
59 | 0x0000, /* R26 - Interrupt Status */ | |
60 | 0x0006, /* R27 - Interrupt Status Mask */ | |
61 | 0x0000, /* R28 - Interrupt Polarity */ | |
62 | 0x0000, /* R29 - Interrupt Control */ | |
63 | 0x00C0, /* R30 - DAC Digital 1 */ | |
64 | 0x0008, /* R31 - DAC Digital 2 */ | |
65 | 0x09AF, /* R32 - DRC 1 */ | |
66 | 0x4201, /* R33 - DRC 2 */ | |
67 | 0x0000, /* R34 - DRC 3 */ | |
68 | 0x0000, /* R35 - DRC 4 */ | |
69 | 0x0000, /* R36 */ | |
70 | 0x0000, /* R37 */ | |
71 | 0x0000, /* R38 - Write Sequencer 1 */ | |
72 | 0x0000, /* R39 - Write Sequencer 2 */ | |
73 | 0x0002, /* R40 - MW Slave 1 */ | |
74 | 0x0000, /* R41 */ | |
75 | 0x0000, /* R42 - EQ 1 */ | |
76 | 0x0000, /* R43 - EQ 2 */ | |
77 | 0x0FCA, /* R44 - EQ 3 */ | |
78 | 0x0400, /* R45 - EQ 4 */ | |
79 | 0x00B8, /* R46 - EQ 5 */ | |
80 | 0x1EB5, /* R47 - EQ 6 */ | |
81 | 0xF145, /* R48 - EQ 7 */ | |
82 | 0x0B75, /* R49 - EQ 8 */ | |
83 | 0x01C5, /* R50 - EQ 9 */ | |
84 | 0x169E, /* R51 - EQ 10 */ | |
85 | 0xF829, /* R52 - EQ 11 */ | |
86 | 0x07AD, /* R53 - EQ 12 */ | |
87 | 0x1103, /* R54 - EQ 13 */ | |
88 | 0x1C58, /* R55 - EQ 14 */ | |
89 | 0xF373, /* R56 - EQ 15 */ | |
90 | 0x0A54, /* R57 - EQ 16 */ | |
91 | 0x0558, /* R58 - EQ 17 */ | |
92 | 0x0564, /* R59 - EQ 18 */ | |
93 | 0x0559, /* R60 - EQ 19 */ | |
94 | 0x4000, /* R61 - EQ 20 */ | |
95 | }; | |
96 | ||
97 | static struct { | |
98 | int ratio; | |
99 | int clk_sys_rate; | |
100 | } clk_sys_rates[] = { | |
101 | { 64, 0 }, | |
102 | { 128, 1 }, | |
103 | { 192, 2 }, | |
104 | { 256, 3 }, | |
105 | { 384, 4 }, | |
106 | { 512, 5 }, | |
107 | { 768, 6 }, | |
108 | { 1024, 7 }, | |
109 | { 1408, 8 }, | |
110 | { 1536, 9 }, | |
111 | }; | |
112 | ||
113 | static struct { | |
114 | int rate; | |
115 | int sample_rate; | |
116 | } sample_rates[] = { | |
117 | { 8000, 0 }, | |
118 | { 11025, 1 }, | |
119 | { 12000, 2 }, | |
120 | { 16000, 3 }, | |
121 | { 22050, 4 }, | |
122 | { 24000, 5 }, | |
123 | { 32000, 6 }, | |
124 | { 44100, 7 }, | |
125 | { 48000, 8 }, | |
126 | { 88200, 9 }, | |
127 | { 96000, 10 }, | |
128 | }; | |
129 | ||
130 | static struct { | |
131 | int div; /* *10 due to .5s */ | |
132 | int bclk_div; | |
133 | } bclk_divs[] = { | |
134 | { 10, 0 }, | |
135 | { 15, 1 }, | |
136 | { 20, 2 }, | |
137 | { 30, 3 }, | |
138 | { 40, 4 }, | |
139 | { 50, 5 }, | |
140 | { 55, 6 }, | |
141 | { 60, 7 }, | |
142 | { 80, 8 }, | |
143 | { 100, 9 }, | |
144 | { 110, 10 }, | |
145 | { 120, 11 }, | |
146 | { 160, 12 }, | |
147 | { 200, 13 }, | |
148 | { 220, 14 }, | |
149 | { 240, 15 }, | |
150 | { 250, 16 }, | |
151 | { 300, 17 }, | |
152 | { 320, 18 }, | |
153 | { 440, 19 }, | |
154 | { 480, 20 }, | |
155 | }; | |
156 | ||
157 | struct wm9081_priv { | |
158 | struct snd_soc_codec codec; | |
159 | u16 reg_cache[WM9081_MAX_REGISTER + 1]; | |
160 | int sysclk_source; | |
161 | int mclk_rate; | |
162 | int sysclk_rate; | |
163 | int fs; | |
164 | int bclk; | |
165 | int master; | |
166 | int fll_fref; | |
167 | int fll_fout; | |
e0026bea | 168 | int tdm_width; |
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169 | struct wm9081_retune_mobile_config *retune; |
170 | }; | |
171 | ||
8d50e447 | 172 | static int wm9081_volatile_register(unsigned int reg) |
86ed3669 MB |
173 | { |
174 | switch (reg) { | |
8d50e447 MB |
175 | case WM9081_SOFTWARE_RESET: |
176 | return 1; | |
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177 | default: |
178 | return 0; | |
179 | } | |
180 | } | |
181 | ||
86ed3669 MB |
182 | static int wm9081_reset(struct snd_soc_codec *codec) |
183 | { | |
8d50e447 | 184 | return snd_soc_write(codec, WM9081_SOFTWARE_RESET, 0); |
86ed3669 MB |
185 | } |
186 | ||
187 | static const DECLARE_TLV_DB_SCALE(drc_in_tlv, -4500, 75, 0); | |
188 | static const DECLARE_TLV_DB_SCALE(drc_out_tlv, -2250, 75, 0); | |
189 | static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0); | |
190 | static unsigned int drc_max_tlv[] = { | |
191 | TLV_DB_RANGE_HEAD(4), | |
192 | 0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0), | |
193 | 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0), | |
194 | 2, 2, TLV_DB_SCALE_ITEM(2400, 0, 0), | |
195 | 3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0), | |
196 | }; | |
197 | static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0); | |
198 | static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -300, 50, 0); | |
199 | ||
200 | static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); | |
201 | ||
202 | static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0); | |
203 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1); | |
204 | static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); | |
205 | ||
206 | static const char *drc_high_text[] = { | |
207 | "1", | |
208 | "1/2", | |
209 | "1/4", | |
210 | "1/8", | |
211 | "1/16", | |
212 | "0", | |
213 | }; | |
214 | ||
215 | static const struct soc_enum drc_high = | |
216 | SOC_ENUM_SINGLE(WM9081_DRC_3, 3, 6, drc_high_text); | |
217 | ||
218 | static const char *drc_low_text[] = { | |
219 | "1", | |
220 | "1/2", | |
221 | "1/4", | |
222 | "1/8", | |
223 | "0", | |
224 | }; | |
225 | ||
226 | static const struct soc_enum drc_low = | |
227 | SOC_ENUM_SINGLE(WM9081_DRC_3, 0, 5, drc_low_text); | |
228 | ||
229 | static const char *drc_atk_text[] = { | |
230 | "181us", | |
231 | "181us", | |
232 | "363us", | |
233 | "726us", | |
234 | "1.45ms", | |
235 | "2.9ms", | |
236 | "5.8ms", | |
237 | "11.6ms", | |
238 | "23.2ms", | |
239 | "46.4ms", | |
240 | "92.8ms", | |
241 | "185.6ms", | |
242 | }; | |
243 | ||
244 | static const struct soc_enum drc_atk = | |
245 | SOC_ENUM_SINGLE(WM9081_DRC_2, 12, 12, drc_atk_text); | |
246 | ||
247 | static const char *drc_dcy_text[] = { | |
248 | "186ms", | |
249 | "372ms", | |
250 | "743ms", | |
251 | "1.49s", | |
252 | "2.97s", | |
253 | "5.94s", | |
254 | "11.89s", | |
255 | "23.78s", | |
256 | "47.56s", | |
257 | }; | |
258 | ||
259 | static const struct soc_enum drc_dcy = | |
260 | SOC_ENUM_SINGLE(WM9081_DRC_2, 8, 9, drc_dcy_text); | |
261 | ||
262 | static const char *drc_qr_dcy_text[] = { | |
263 | "0.725ms", | |
264 | "1.45ms", | |
265 | "5.8ms", | |
266 | }; | |
267 | ||
268 | static const struct soc_enum drc_qr_dcy = | |
269 | SOC_ENUM_SINGLE(WM9081_DRC_2, 4, 3, drc_qr_dcy_text); | |
270 | ||
271 | static const char *dac_deemph_text[] = { | |
272 | "None", | |
273 | "32kHz", | |
274 | "44.1kHz", | |
275 | "48kHz", | |
276 | }; | |
277 | ||
278 | static const struct soc_enum dac_deemph = | |
279 | SOC_ENUM_SINGLE(WM9081_DAC_DIGITAL_2, 1, 4, dac_deemph_text); | |
280 | ||
281 | static const char *speaker_mode_text[] = { | |
282 | "Class D", | |
283 | "Class AB", | |
284 | }; | |
285 | ||
286 | static const struct soc_enum speaker_mode = | |
287 | SOC_ENUM_SINGLE(WM9081_ANALOGUE_SPEAKER_2, 6, 2, speaker_mode_text); | |
288 | ||
289 | static int speaker_mode_get(struct snd_kcontrol *kcontrol, | |
290 | struct snd_ctl_elem_value *ucontrol) | |
291 | { | |
292 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
293 | unsigned int reg; | |
294 | ||
8d50e447 | 295 | reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2); |
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296 | if (reg & WM9081_SPK_MODE) |
297 | ucontrol->value.integer.value[0] = 1; | |
298 | else | |
299 | ucontrol->value.integer.value[0] = 0; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Stop any attempts to change speaker mode while the speaker is enabled. | |
306 | * | |
307 | * We also have some special anti-pop controls dependant on speaker | |
308 | * mode which must be changed along with the mode. | |
309 | */ | |
310 | static int speaker_mode_put(struct snd_kcontrol *kcontrol, | |
311 | struct snd_ctl_elem_value *ucontrol) | |
312 | { | |
313 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
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314 | unsigned int reg_pwr = snd_soc_read(codec, WM9081_POWER_MANAGEMENT); |
315 | unsigned int reg2 = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2); | |
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316 | |
317 | /* Are we changing anything? */ | |
318 | if (ucontrol->value.integer.value[0] == | |
319 | ((reg2 & WM9081_SPK_MODE) != 0)) | |
320 | return 0; | |
321 | ||
322 | /* Don't try to change modes while enabled */ | |
323 | if (reg_pwr & WM9081_SPK_ENA) | |
324 | return -EINVAL; | |
325 | ||
326 | if (ucontrol->value.integer.value[0]) { | |
327 | /* Class AB */ | |
328 | reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL); | |
329 | reg2 |= WM9081_SPK_MODE; | |
330 | } else { | |
331 | /* Class D */ | |
332 | reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL; | |
333 | reg2 &= ~WM9081_SPK_MODE; | |
334 | } | |
335 | ||
8d50e447 | 336 | snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_2, reg2); |
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337 | |
338 | return 0; | |
339 | } | |
340 | ||
341 | static const struct snd_kcontrol_new wm9081_snd_controls[] = { | |
342 | SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv), | |
343 | SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv), | |
344 | ||
345 | SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv), | |
346 | ||
347 | SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1), | |
348 | SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0), | |
349 | SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv), | |
350 | ||
351 | SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0), | |
352 | SOC_ENUM("DRC High Slope", drc_high), | |
353 | SOC_ENUM("DRC Low Slope", drc_low), | |
354 | SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv), | |
355 | SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv), | |
356 | SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv), | |
357 | SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv), | |
358 | SOC_ENUM("DRC Attack", drc_atk), | |
359 | SOC_ENUM("DRC Decay", drc_dcy), | |
360 | SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0), | |
361 | SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv), | |
362 | SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy), | |
363 | SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv), | |
364 | ||
365 | SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0), | |
366 | ||
367 | SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0), | |
368 | SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0), | |
369 | SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1), | |
370 | SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0), | |
371 | SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0, | |
372 | out_tlv), | |
373 | SOC_ENUM("DAC Deemphasis", dac_deemph), | |
374 | SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put), | |
375 | }; | |
376 | ||
377 | static const struct snd_kcontrol_new wm9081_eq_controls[] = { | |
378 | SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv), | |
379 | SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv), | |
380 | SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv), | |
381 | SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv), | |
382 | SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv), | |
383 | }; | |
384 | ||
385 | static const struct snd_kcontrol_new mixer[] = { | |
386 | SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0), | |
387 | SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0), | |
388 | SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0), | |
389 | }; | |
390 | ||
391 | static int speaker_event(struct snd_soc_dapm_widget *w, | |
392 | struct snd_kcontrol *kcontrol, int event) | |
393 | { | |
394 | struct snd_soc_codec *codec = w->codec; | |
8d50e447 | 395 | unsigned int reg = snd_soc_read(codec, WM9081_POWER_MANAGEMENT); |
86ed3669 MB |
396 | |
397 | switch (event) { | |
398 | case SND_SOC_DAPM_POST_PMU: | |
399 | reg |= WM9081_SPK_ENA; | |
400 | break; | |
401 | ||
402 | case SND_SOC_DAPM_PRE_PMD: | |
403 | reg &= ~WM9081_SPK_ENA; | |
404 | break; | |
405 | } | |
406 | ||
8d50e447 | 407 | snd_soc_write(codec, WM9081_POWER_MANAGEMENT, reg); |
86ed3669 MB |
408 | |
409 | return 0; | |
410 | } | |
411 | ||
412 | struct _fll_div { | |
413 | u16 fll_fratio; | |
414 | u16 fll_outdiv; | |
415 | u16 fll_clk_ref_div; | |
416 | u16 n; | |
417 | u16 k; | |
418 | }; | |
419 | ||
420 | /* The size in bits of the FLL divide multiplied by 10 | |
421 | * to allow rounding later */ | |
422 | #define FIXED_FLL_SIZE ((1 << 16) * 10) | |
423 | ||
424 | static struct { | |
425 | unsigned int min; | |
426 | unsigned int max; | |
427 | u16 fll_fratio; | |
428 | int ratio; | |
429 | } fll_fratios[] = { | |
430 | { 0, 64000, 4, 16 }, | |
431 | { 64000, 128000, 3, 8 }, | |
432 | { 128000, 256000, 2, 4 }, | |
433 | { 256000, 1000000, 1, 2 }, | |
434 | { 1000000, 13500000, 0, 1 }, | |
435 | }; | |
436 | ||
437 | static int fll_factors(struct _fll_div *fll_div, unsigned int Fref, | |
438 | unsigned int Fout) | |
439 | { | |
440 | u64 Kpart; | |
441 | unsigned int K, Ndiv, Nmod, target; | |
442 | unsigned int div; | |
443 | int i; | |
444 | ||
445 | /* Fref must be <=13.5MHz */ | |
446 | div = 1; | |
447 | while ((Fref / div) > 13500000) { | |
448 | div *= 2; | |
449 | ||
450 | if (div > 8) { | |
451 | pr_err("Can't scale %dMHz input down to <=13.5MHz\n", | |
452 | Fref); | |
453 | return -EINVAL; | |
454 | } | |
455 | } | |
456 | fll_div->fll_clk_ref_div = div / 2; | |
457 | ||
458 | pr_debug("Fref=%u Fout=%u\n", Fref, Fout); | |
459 | ||
460 | /* Apply the division for our remaining calculations */ | |
461 | Fref /= div; | |
462 | ||
463 | /* Fvco should be 90-100MHz; don't check the upper bound */ | |
464 | div = 0; | |
465 | target = Fout * 2; | |
466 | while (target < 90000000) { | |
467 | div++; | |
468 | target *= 2; | |
469 | if (div > 7) { | |
470 | pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n", | |
471 | Fout); | |
472 | return -EINVAL; | |
473 | } | |
474 | } | |
475 | fll_div->fll_outdiv = div; | |
476 | ||
477 | pr_debug("Fvco=%dHz\n", target); | |
478 | ||
479 | /* Find an appropraite FLL_FRATIO and factor it out of the target */ | |
480 | for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) { | |
481 | if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) { | |
482 | fll_div->fll_fratio = fll_fratios[i].fll_fratio; | |
483 | target /= fll_fratios[i].ratio; | |
484 | break; | |
485 | } | |
486 | } | |
487 | if (i == ARRAY_SIZE(fll_fratios)) { | |
488 | pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref); | |
489 | return -EINVAL; | |
490 | } | |
491 | ||
492 | /* Now, calculate N.K */ | |
493 | Ndiv = target / Fref; | |
494 | ||
495 | fll_div->n = Ndiv; | |
496 | Nmod = target % Fref; | |
497 | pr_debug("Nmod=%d\n", Nmod); | |
498 | ||
499 | /* Calculate fractional part - scale up so we can round. */ | |
500 | Kpart = FIXED_FLL_SIZE * (long long)Nmod; | |
501 | ||
502 | do_div(Kpart, Fref); | |
503 | ||
504 | K = Kpart & 0xFFFFFFFF; | |
505 | ||
506 | if ((K % 10) >= 5) | |
507 | K += 5; | |
508 | ||
509 | /* Move down to proper range now rounding is done */ | |
510 | fll_div->k = K / 10; | |
511 | ||
512 | pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n", | |
513 | fll_div->n, fll_div->k, | |
514 | fll_div->fll_fratio, fll_div->fll_outdiv, | |
515 | fll_div->fll_clk_ref_div); | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
520 | static int wm9081_set_fll(struct snd_soc_codec *codec, int fll_id, | |
521 | unsigned int Fref, unsigned int Fout) | |
522 | { | |
523 | struct wm9081_priv *wm9081 = codec->private_data; | |
524 | u16 reg1, reg4, reg5; | |
525 | struct _fll_div fll_div; | |
526 | int ret; | |
527 | int clk_sys_reg; | |
528 | ||
529 | /* Any change? */ | |
530 | if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout) | |
531 | return 0; | |
532 | ||
533 | /* Disable the FLL */ | |
534 | if (Fout == 0) { | |
535 | dev_dbg(codec->dev, "FLL disabled\n"); | |
536 | wm9081->fll_fref = 0; | |
537 | wm9081->fll_fout = 0; | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | ret = fll_factors(&fll_div, Fref, Fout); | |
543 | if (ret != 0) | |
544 | return ret; | |
545 | ||
8d50e447 | 546 | reg5 = snd_soc_read(codec, WM9081_FLL_CONTROL_5); |
86ed3669 MB |
547 | reg5 &= ~WM9081_FLL_CLK_SRC_MASK; |
548 | ||
549 | switch (fll_id) { | |
550 | case WM9081_SYSCLK_FLL_MCLK: | |
551 | reg5 |= 0x1; | |
552 | break; | |
553 | ||
554 | default: | |
555 | dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id); | |
556 | return -EINVAL; | |
557 | } | |
558 | ||
559 | /* Disable CLK_SYS while we reconfigure */ | |
8d50e447 | 560 | clk_sys_reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3); |
86ed3669 | 561 | if (clk_sys_reg & WM9081_CLK_SYS_ENA) |
8d50e447 | 562 | snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, |
86ed3669 MB |
563 | clk_sys_reg & ~WM9081_CLK_SYS_ENA); |
564 | ||
565 | /* Any FLL configuration change requires that the FLL be | |
566 | * disabled first. */ | |
8d50e447 | 567 | reg1 = snd_soc_read(codec, WM9081_FLL_CONTROL_1); |
86ed3669 | 568 | reg1 &= ~WM9081_FLL_ENA; |
8d50e447 | 569 | snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1); |
86ed3669 MB |
570 | |
571 | /* Apply the configuration */ | |
572 | if (fll_div.k) | |
573 | reg1 |= WM9081_FLL_FRAC_MASK; | |
574 | else | |
575 | reg1 &= ~WM9081_FLL_FRAC_MASK; | |
8d50e447 | 576 | snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1); |
86ed3669 | 577 | |
8d50e447 | 578 | snd_soc_write(codec, WM9081_FLL_CONTROL_2, |
86ed3669 MB |
579 | (fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) | |
580 | (fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT)); | |
8d50e447 | 581 | snd_soc_write(codec, WM9081_FLL_CONTROL_3, fll_div.k); |
86ed3669 | 582 | |
8d50e447 | 583 | reg4 = snd_soc_read(codec, WM9081_FLL_CONTROL_4); |
86ed3669 MB |
584 | reg4 &= ~WM9081_FLL_N_MASK; |
585 | reg4 |= fll_div.n << WM9081_FLL_N_SHIFT; | |
8d50e447 | 586 | snd_soc_write(codec, WM9081_FLL_CONTROL_4, reg4); |
86ed3669 MB |
587 | |
588 | reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK; | |
589 | reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT; | |
8d50e447 | 590 | snd_soc_write(codec, WM9081_FLL_CONTROL_5, reg5); |
86ed3669 MB |
591 | |
592 | /* Enable the FLL */ | |
8d50e447 | 593 | snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA); |
86ed3669 MB |
594 | |
595 | /* Then bring CLK_SYS up again if it was disabled */ | |
596 | if (clk_sys_reg & WM9081_CLK_SYS_ENA) | |
8d50e447 | 597 | snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, clk_sys_reg); |
86ed3669 MB |
598 | |
599 | dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout); | |
600 | ||
601 | wm9081->fll_fref = Fref; | |
602 | wm9081->fll_fout = Fout; | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | static int configure_clock(struct snd_soc_codec *codec) | |
608 | { | |
609 | struct wm9081_priv *wm9081 = codec->private_data; | |
610 | int new_sysclk, i, target; | |
611 | unsigned int reg; | |
612 | int ret = 0; | |
613 | int mclkdiv = 0; | |
614 | int fll = 0; | |
615 | ||
616 | switch (wm9081->sysclk_source) { | |
617 | case WM9081_SYSCLK_MCLK: | |
618 | if (wm9081->mclk_rate > 12225000) { | |
619 | mclkdiv = 1; | |
620 | wm9081->sysclk_rate = wm9081->mclk_rate / 2; | |
621 | } else { | |
622 | wm9081->sysclk_rate = wm9081->mclk_rate; | |
623 | } | |
624 | wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, 0, 0); | |
625 | break; | |
626 | ||
627 | case WM9081_SYSCLK_FLL_MCLK: | |
628 | /* If we have a sample rate calculate a CLK_SYS that | |
629 | * gives us a suitable DAC configuration, plus BCLK. | |
630 | * Ideally we would check to see if we can clock | |
631 | * directly from MCLK and only use the FLL if this is | |
632 | * not the case, though care must be taken with free | |
633 | * running mode. | |
634 | */ | |
635 | if (wm9081->master && wm9081->bclk) { | |
636 | /* Make sure we can generate CLK_SYS and BCLK | |
637 | * and that we've got 3MHz for optimal | |
638 | * performance. */ | |
639 | for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) { | |
640 | target = wm9081->fs * clk_sys_rates[i].ratio; | |
0154724d | 641 | new_sysclk = target; |
86ed3669 MB |
642 | if (target >= wm9081->bclk && |
643 | target > 3000000) | |
0154724d | 644 | break; |
86ed3669 | 645 | } |
4b75e947 MB |
646 | |
647 | if (i == ARRAY_SIZE(clk_sys_rates)) | |
648 | return -EINVAL; | |
649 | ||
86ed3669 MB |
650 | } else if (wm9081->fs) { |
651 | for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) { | |
652 | new_sysclk = clk_sys_rates[i].ratio | |
653 | * wm9081->fs; | |
654 | if (new_sysclk > 3000000) | |
655 | break; | |
656 | } | |
4b75e947 MB |
657 | |
658 | if (i == ARRAY_SIZE(clk_sys_rates)) | |
659 | return -EINVAL; | |
660 | ||
86ed3669 MB |
661 | } else { |
662 | new_sysclk = 12288000; | |
663 | } | |
664 | ||
665 | ret = wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, | |
666 | wm9081->mclk_rate, new_sysclk); | |
667 | if (ret == 0) { | |
668 | wm9081->sysclk_rate = new_sysclk; | |
669 | ||
670 | /* Switch SYSCLK over to FLL */ | |
671 | fll = 1; | |
672 | } else { | |
673 | wm9081->sysclk_rate = wm9081->mclk_rate; | |
674 | } | |
675 | break; | |
676 | ||
677 | default: | |
678 | return -EINVAL; | |
679 | } | |
680 | ||
8d50e447 | 681 | reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_1); |
86ed3669 MB |
682 | if (mclkdiv) |
683 | reg |= WM9081_MCLKDIV2; | |
684 | else | |
685 | reg &= ~WM9081_MCLKDIV2; | |
8d50e447 | 686 | snd_soc_write(codec, WM9081_CLOCK_CONTROL_1, reg); |
86ed3669 | 687 | |
8d50e447 | 688 | reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3); |
86ed3669 MB |
689 | if (fll) |
690 | reg |= WM9081_CLK_SRC_SEL; | |
691 | else | |
692 | reg &= ~WM9081_CLK_SRC_SEL; | |
8d50e447 | 693 | snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, reg); |
86ed3669 MB |
694 | |
695 | dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate); | |
696 | ||
697 | return ret; | |
698 | } | |
699 | ||
700 | static int clk_sys_event(struct snd_soc_dapm_widget *w, | |
701 | struct snd_kcontrol *kcontrol, int event) | |
702 | { | |
703 | struct snd_soc_codec *codec = w->codec; | |
704 | struct wm9081_priv *wm9081 = codec->private_data; | |
705 | ||
706 | /* This should be done on init() for bypass paths */ | |
707 | switch (wm9081->sysclk_source) { | |
708 | case WM9081_SYSCLK_MCLK: | |
709 | dev_dbg(codec->dev, "Using %dHz MCLK\n", wm9081->mclk_rate); | |
710 | break; | |
711 | case WM9081_SYSCLK_FLL_MCLK: | |
712 | dev_dbg(codec->dev, "Using %dHz MCLK with FLL\n", | |
713 | wm9081->mclk_rate); | |
714 | break; | |
715 | default: | |
716 | dev_err(codec->dev, "System clock not configured\n"); | |
717 | return -EINVAL; | |
718 | } | |
719 | ||
720 | switch (event) { | |
721 | case SND_SOC_DAPM_PRE_PMU: | |
722 | configure_clock(codec); | |
723 | break; | |
724 | ||
725 | case SND_SOC_DAPM_POST_PMD: | |
726 | /* Disable the FLL if it's running */ | |
727 | wm9081_set_fll(codec, 0, 0, 0); | |
728 | break; | |
729 | } | |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
734 | static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = { | |
735 | SND_SOC_DAPM_INPUT("IN1"), | |
736 | SND_SOC_DAPM_INPUT("IN2"), | |
737 | ||
738 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM9081_POWER_MANAGEMENT, 0, 0), | |
739 | ||
740 | SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0, | |
741 | mixer, ARRAY_SIZE(mixer)), | |
742 | ||
743 | SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0), | |
744 | ||
745 | SND_SOC_DAPM_PGA_E("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0, | |
746 | speaker_event, | |
747 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
748 | ||
749 | SND_SOC_DAPM_OUTPUT("LINEOUT"), | |
750 | SND_SOC_DAPM_OUTPUT("SPKN"), | |
751 | SND_SOC_DAPM_OUTPUT("SPKP"), | |
752 | ||
753 | SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event, | |
754 | SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), | |
755 | SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0), | |
756 | SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0), | |
757 | }; | |
758 | ||
759 | ||
760 | static const struct snd_soc_dapm_route audio_paths[] = { | |
761 | { "DAC", NULL, "CLK_SYS" }, | |
762 | { "DAC", NULL, "CLK_DSP" }, | |
763 | ||
764 | { "Mixer", "IN1 Switch", "IN1" }, | |
765 | { "Mixer", "IN2 Switch", "IN2" }, | |
766 | { "Mixer", "Playback Switch", "DAC" }, | |
767 | ||
768 | { "LINEOUT PGA", NULL, "Mixer" }, | |
769 | { "LINEOUT PGA", NULL, "TOCLK" }, | |
770 | { "LINEOUT PGA", NULL, "CLK_SYS" }, | |
771 | ||
772 | { "LINEOUT", NULL, "LINEOUT PGA" }, | |
773 | ||
774 | { "Speaker PGA", NULL, "Mixer" }, | |
775 | { "Speaker PGA", NULL, "TOCLK" }, | |
776 | { "Speaker PGA", NULL, "CLK_SYS" }, | |
777 | ||
778 | { "SPKN", NULL, "Speaker PGA" }, | |
779 | { "SPKP", NULL, "Speaker PGA" }, | |
780 | }; | |
781 | ||
782 | static int wm9081_set_bias_level(struct snd_soc_codec *codec, | |
783 | enum snd_soc_bias_level level) | |
784 | { | |
785 | u16 reg; | |
786 | ||
787 | switch (level) { | |
788 | case SND_SOC_BIAS_ON: | |
789 | break; | |
790 | ||
791 | case SND_SOC_BIAS_PREPARE: | |
792 | /* VMID=2*40k */ | |
8d50e447 | 793 | reg = snd_soc_read(codec, WM9081_VMID_CONTROL); |
86ed3669 MB |
794 | reg &= ~WM9081_VMID_SEL_MASK; |
795 | reg |= 0x2; | |
8d50e447 | 796 | snd_soc_write(codec, WM9081_VMID_CONTROL, reg); |
86ed3669 MB |
797 | |
798 | /* Normal bias current */ | |
8d50e447 | 799 | reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1); |
86ed3669 | 800 | reg &= ~WM9081_STBY_BIAS_ENA; |
8d50e447 | 801 | snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg); |
86ed3669 MB |
802 | break; |
803 | ||
804 | case SND_SOC_BIAS_STANDBY: | |
805 | /* Initial cold start */ | |
806 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
807 | /* Disable LINEOUT discharge */ | |
8d50e447 | 808 | reg = snd_soc_read(codec, WM9081_ANTI_POP_CONTROL); |
86ed3669 | 809 | reg &= ~WM9081_LINEOUT_DISCH; |
8d50e447 | 810 | snd_soc_write(codec, WM9081_ANTI_POP_CONTROL, reg); |
86ed3669 MB |
811 | |
812 | /* Select startup bias source */ | |
8d50e447 | 813 | reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1); |
86ed3669 | 814 | reg |= WM9081_BIAS_SRC | WM9081_BIAS_ENA; |
8d50e447 | 815 | snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg); |
86ed3669 MB |
816 | |
817 | /* VMID 2*4k; Soft VMID ramp enable */ | |
8d50e447 | 818 | reg = snd_soc_read(codec, WM9081_VMID_CONTROL); |
86ed3669 | 819 | reg |= WM9081_VMID_RAMP | 0x6; |
8d50e447 | 820 | snd_soc_write(codec, WM9081_VMID_CONTROL, reg); |
86ed3669 MB |
821 | |
822 | mdelay(100); | |
823 | ||
824 | /* Normal bias enable & soft start off */ | |
825 | reg |= WM9081_BIAS_ENA; | |
826 | reg &= ~WM9081_VMID_RAMP; | |
8d50e447 | 827 | snd_soc_write(codec, WM9081_VMID_CONTROL, reg); |
86ed3669 MB |
828 | |
829 | /* Standard bias source */ | |
8d50e447 | 830 | reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1); |
86ed3669 | 831 | reg &= ~WM9081_BIAS_SRC; |
8d50e447 | 832 | snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg); |
86ed3669 MB |
833 | } |
834 | ||
835 | /* VMID 2*240k */ | |
8d50e447 | 836 | reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1); |
86ed3669 MB |
837 | reg &= ~WM9081_VMID_SEL_MASK; |
838 | reg |= 0x40; | |
8d50e447 | 839 | snd_soc_write(codec, WM9081_VMID_CONTROL, reg); |
86ed3669 MB |
840 | |
841 | /* Standby bias current on */ | |
8d50e447 | 842 | reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1); |
86ed3669 | 843 | reg |= WM9081_STBY_BIAS_ENA; |
8d50e447 | 844 | snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg); |
86ed3669 MB |
845 | break; |
846 | ||
847 | case SND_SOC_BIAS_OFF: | |
848 | /* Startup bias source */ | |
8d50e447 | 849 | reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1); |
86ed3669 | 850 | reg |= WM9081_BIAS_SRC; |
8d50e447 | 851 | snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg); |
86ed3669 MB |
852 | |
853 | /* Disable VMID and biases with soft ramping */ | |
8d50e447 | 854 | reg = snd_soc_read(codec, WM9081_VMID_CONTROL); |
86ed3669 MB |
855 | reg &= ~(WM9081_VMID_SEL_MASK | WM9081_BIAS_ENA); |
856 | reg |= WM9081_VMID_RAMP; | |
8d50e447 | 857 | snd_soc_write(codec, WM9081_VMID_CONTROL, reg); |
86ed3669 MB |
858 | |
859 | /* Actively discharge LINEOUT */ | |
8d50e447 | 860 | reg = snd_soc_read(codec, WM9081_ANTI_POP_CONTROL); |
86ed3669 | 861 | reg |= WM9081_LINEOUT_DISCH; |
8d50e447 | 862 | snd_soc_write(codec, WM9081_ANTI_POP_CONTROL, reg); |
86ed3669 MB |
863 | break; |
864 | } | |
865 | ||
866 | codec->bias_level = level; | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | static int wm9081_set_dai_fmt(struct snd_soc_dai *dai, | |
872 | unsigned int fmt) | |
873 | { | |
874 | struct snd_soc_codec *codec = dai->codec; | |
875 | struct wm9081_priv *wm9081 = codec->private_data; | |
8d50e447 | 876 | unsigned int aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2); |
86ed3669 MB |
877 | |
878 | aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV | | |
879 | WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK); | |
880 | ||
881 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
882 | case SND_SOC_DAIFMT_CBS_CFS: | |
883 | wm9081->master = 0; | |
884 | break; | |
885 | case SND_SOC_DAIFMT_CBS_CFM: | |
886 | aif2 |= WM9081_LRCLK_DIR; | |
887 | wm9081->master = 1; | |
888 | break; | |
889 | case SND_SOC_DAIFMT_CBM_CFS: | |
890 | aif2 |= WM9081_BCLK_DIR; | |
891 | wm9081->master = 1; | |
892 | break; | |
893 | case SND_SOC_DAIFMT_CBM_CFM: | |
894 | aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR; | |
895 | wm9081->master = 1; | |
896 | break; | |
897 | default: | |
898 | return -EINVAL; | |
899 | } | |
900 | ||
901 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
902 | case SND_SOC_DAIFMT_DSP_B: | |
903 | aif2 |= WM9081_AIF_LRCLK_INV; | |
904 | case SND_SOC_DAIFMT_DSP_A: | |
905 | aif2 |= 0x3; | |
906 | break; | |
907 | case SND_SOC_DAIFMT_I2S: | |
908 | aif2 |= 0x2; | |
909 | break; | |
910 | case SND_SOC_DAIFMT_RIGHT_J: | |
911 | break; | |
912 | case SND_SOC_DAIFMT_LEFT_J: | |
913 | aif2 |= 0x1; | |
914 | break; | |
915 | default: | |
916 | return -EINVAL; | |
917 | } | |
918 | ||
919 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
920 | case SND_SOC_DAIFMT_DSP_A: | |
921 | case SND_SOC_DAIFMT_DSP_B: | |
922 | /* frame inversion not valid for DSP modes */ | |
923 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
924 | case SND_SOC_DAIFMT_NB_NF: | |
925 | break; | |
926 | case SND_SOC_DAIFMT_IB_NF: | |
927 | aif2 |= WM9081_AIF_BCLK_INV; | |
928 | break; | |
929 | default: | |
930 | return -EINVAL; | |
931 | } | |
932 | break; | |
933 | ||
934 | case SND_SOC_DAIFMT_I2S: | |
935 | case SND_SOC_DAIFMT_RIGHT_J: | |
936 | case SND_SOC_DAIFMT_LEFT_J: | |
937 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
938 | case SND_SOC_DAIFMT_NB_NF: | |
939 | break; | |
940 | case SND_SOC_DAIFMT_IB_IF: | |
941 | aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV; | |
942 | break; | |
943 | case SND_SOC_DAIFMT_IB_NF: | |
944 | aif2 |= WM9081_AIF_BCLK_INV; | |
945 | break; | |
946 | case SND_SOC_DAIFMT_NB_IF: | |
947 | aif2 |= WM9081_AIF_LRCLK_INV; | |
948 | break; | |
949 | default: | |
950 | return -EINVAL; | |
951 | } | |
952 | break; | |
953 | default: | |
954 | return -EINVAL; | |
955 | } | |
956 | ||
8d50e447 | 957 | snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2); |
86ed3669 MB |
958 | |
959 | return 0; | |
960 | } | |
961 | ||
962 | static int wm9081_hw_params(struct snd_pcm_substream *substream, | |
963 | struct snd_pcm_hw_params *params, | |
964 | struct snd_soc_dai *dai) | |
965 | { | |
966 | struct snd_soc_codec *codec = dai->codec; | |
967 | struct wm9081_priv *wm9081 = codec->private_data; | |
968 | int ret, i, best, best_val, cur_val; | |
969 | unsigned int clk_ctrl2, aif1, aif2, aif3, aif4; | |
970 | ||
8d50e447 | 971 | clk_ctrl2 = snd_soc_read(codec, WM9081_CLOCK_CONTROL_2); |
86ed3669 MB |
972 | clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK); |
973 | ||
8d50e447 | 974 | aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1); |
86ed3669 | 975 | |
8d50e447 | 976 | aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2); |
86ed3669 MB |
977 | aif2 &= ~WM9081_AIF_WL_MASK; |
978 | ||
8d50e447 | 979 | aif3 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_3); |
86ed3669 MB |
980 | aif3 &= ~WM9081_BCLK_DIV_MASK; |
981 | ||
8d50e447 | 982 | aif4 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_4); |
86ed3669 MB |
983 | aif4 &= ~WM9081_LRCLK_RATE_MASK; |
984 | ||
86ed3669 | 985 | wm9081->fs = params_rate(params); |
86ed3669 | 986 | |
e0026bea MB |
987 | if (wm9081->tdm_width) { |
988 | /* If TDM is set up then that fixes our BCLK. */ | |
86ed3669 MB |
989 | int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >> |
990 | WM9081_AIFDAC_TDM_MODE_SHIFT) + 1; | |
e0026bea MB |
991 | |
992 | wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots; | |
993 | } else { | |
994 | /* Otherwise work out a BCLK from the sample size */ | |
995 | wm9081->bclk = 2 * wm9081->fs; | |
996 | ||
997 | switch (params_format(params)) { | |
998 | case SNDRV_PCM_FORMAT_S16_LE: | |
999 | wm9081->bclk *= 16; | |
1000 | break; | |
1001 | case SNDRV_PCM_FORMAT_S20_3LE: | |
1002 | wm9081->bclk *= 20; | |
1003 | aif2 |= 0x4; | |
1004 | break; | |
1005 | case SNDRV_PCM_FORMAT_S24_LE: | |
1006 | wm9081->bclk *= 24; | |
1007 | aif2 |= 0x8; | |
1008 | break; | |
1009 | case SNDRV_PCM_FORMAT_S32_LE: | |
1010 | wm9081->bclk *= 32; | |
1011 | aif2 |= 0xc; | |
1012 | break; | |
1013 | default: | |
1014 | return -EINVAL; | |
1015 | } | |
86ed3669 MB |
1016 | } |
1017 | ||
1018 | dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm9081->bclk); | |
1019 | ||
1020 | ret = configure_clock(codec); | |
1021 | if (ret != 0) | |
1022 | return ret; | |
1023 | ||
1024 | /* Select nearest CLK_SYS_RATE */ | |
1025 | best = 0; | |
1026 | best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio) | |
1027 | - wm9081->fs); | |
1028 | for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) { | |
1029 | cur_val = abs((wm9081->sysclk_rate / | |
a419aef8 | 1030 | clk_sys_rates[i].ratio) - wm9081->fs); |
86ed3669 MB |
1031 | if (cur_val < best_val) { |
1032 | best = i; | |
1033 | best_val = cur_val; | |
1034 | } | |
1035 | } | |
1036 | dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n", | |
1037 | clk_sys_rates[best].ratio); | |
1038 | clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate | |
1039 | << WM9081_CLK_SYS_RATE_SHIFT); | |
1040 | ||
1041 | /* SAMPLE_RATE */ | |
1042 | best = 0; | |
1043 | best_val = abs(wm9081->fs - sample_rates[0].rate); | |
1044 | for (i = 1; i < ARRAY_SIZE(sample_rates); i++) { | |
1045 | /* Closest match */ | |
1046 | cur_val = abs(wm9081->fs - sample_rates[i].rate); | |
1047 | if (cur_val < best_val) { | |
1048 | best = i; | |
1049 | best_val = cur_val; | |
1050 | } | |
1051 | } | |
1052 | dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n", | |
1053 | sample_rates[best].rate); | |
0154724d MB |
1054 | clk_ctrl2 |= (sample_rates[best].sample_rate |
1055 | << WM9081_SAMPLE_RATE_SHIFT); | |
86ed3669 MB |
1056 | |
1057 | /* BCLK_DIV */ | |
1058 | best = 0; | |
1059 | best_val = INT_MAX; | |
1060 | for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) { | |
1061 | cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div) | |
1062 | - wm9081->bclk; | |
1063 | if (cur_val < 0) /* Table is sorted */ | |
1064 | break; | |
1065 | if (cur_val < best_val) { | |
1066 | best = i; | |
1067 | best_val = cur_val; | |
1068 | } | |
1069 | } | |
1070 | wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div; | |
1071 | dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n", | |
1072 | bclk_divs[best].div, wm9081->bclk); | |
1073 | aif3 |= bclk_divs[best].bclk_div; | |
1074 | ||
1075 | /* LRCLK is a simple fraction of BCLK */ | |
1076 | dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs); | |
1077 | aif4 |= wm9081->bclk / wm9081->fs; | |
1078 | ||
1079 | /* Apply a ReTune Mobile configuration if it's in use */ | |
1080 | if (wm9081->retune) { | |
1081 | struct wm9081_retune_mobile_config *retune = wm9081->retune; | |
1082 | struct wm9081_retune_mobile_setting *s; | |
1083 | int eq1; | |
1084 | ||
1085 | best = 0; | |
1086 | best_val = abs(retune->configs[0].rate - wm9081->fs); | |
1087 | for (i = 0; i < retune->num_configs; i++) { | |
1088 | cur_val = abs(retune->configs[i].rate - wm9081->fs); | |
1089 | if (cur_val < best_val) { | |
1090 | best_val = cur_val; | |
1091 | best = i; | |
1092 | } | |
1093 | } | |
1094 | s = &retune->configs[best]; | |
1095 | ||
1096 | dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n", | |
1097 | s->name, s->rate); | |
1098 | ||
1099 | /* If the EQ is enabled then disable it while we write out */ | |
8d50e447 | 1100 | eq1 = snd_soc_read(codec, WM9081_EQ_1) & WM9081_EQ_ENA; |
86ed3669 | 1101 | if (eq1 & WM9081_EQ_ENA) |
8d50e447 | 1102 | snd_soc_write(codec, WM9081_EQ_1, 0); |
86ed3669 MB |
1103 | |
1104 | /* Write out the other values */ | |
1105 | for (i = 1; i < ARRAY_SIZE(s->config); i++) | |
8d50e447 | 1106 | snd_soc_write(codec, WM9081_EQ_1 + i, s->config[i]); |
86ed3669 MB |
1107 | |
1108 | eq1 |= (s->config[0] & ~WM9081_EQ_ENA); | |
8d50e447 | 1109 | snd_soc_write(codec, WM9081_EQ_1, eq1); |
86ed3669 MB |
1110 | } |
1111 | ||
8d50e447 MB |
1112 | snd_soc_write(codec, WM9081_CLOCK_CONTROL_2, clk_ctrl2); |
1113 | snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2); | |
1114 | snd_soc_write(codec, WM9081_AUDIO_INTERFACE_3, aif3); | |
1115 | snd_soc_write(codec, WM9081_AUDIO_INTERFACE_4, aif4); | |
86ed3669 MB |
1116 | |
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | static int wm9081_digital_mute(struct snd_soc_dai *codec_dai, int mute) | |
1121 | { | |
1122 | struct snd_soc_codec *codec = codec_dai->codec; | |
1123 | unsigned int reg; | |
1124 | ||
8d50e447 | 1125 | reg = snd_soc_read(codec, WM9081_DAC_DIGITAL_2); |
86ed3669 MB |
1126 | |
1127 | if (mute) | |
1128 | reg |= WM9081_DAC_MUTE; | |
1129 | else | |
1130 | reg &= ~WM9081_DAC_MUTE; | |
1131 | ||
8d50e447 | 1132 | snd_soc_write(codec, WM9081_DAC_DIGITAL_2, reg); |
86ed3669 MB |
1133 | |
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | static int wm9081_set_sysclk(struct snd_soc_dai *codec_dai, | |
1138 | int clk_id, unsigned int freq, int dir) | |
1139 | { | |
1140 | struct snd_soc_codec *codec = codec_dai->codec; | |
1141 | struct wm9081_priv *wm9081 = codec->private_data; | |
1142 | ||
1143 | switch (clk_id) { | |
1144 | case WM9081_SYSCLK_MCLK: | |
1145 | case WM9081_SYSCLK_FLL_MCLK: | |
1146 | wm9081->sysclk_source = clk_id; | |
1147 | wm9081->mclk_rate = freq; | |
1148 | break; | |
1149 | ||
1150 | default: | |
1151 | return -EINVAL; | |
1152 | } | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int wm9081_set_tdm_slot(struct snd_soc_dai *dai, | |
a5479e38 | 1158 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
86ed3669 MB |
1159 | { |
1160 | struct snd_soc_codec *codec = dai->codec; | |
e0026bea | 1161 | struct wm9081_priv *wm9081 = codec->private_data; |
8d50e447 | 1162 | unsigned int aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1); |
86ed3669 MB |
1163 | |
1164 | aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK); | |
1165 | ||
e0026bea | 1166 | if (slots < 0 || slots > 4) |
86ed3669 MB |
1167 | return -EINVAL; |
1168 | ||
e0026bea MB |
1169 | wm9081->tdm_width = slot_width; |
1170 | ||
1171 | if (slots == 0) | |
1172 | slots = 1; | |
1173 | ||
86ed3669 MB |
1174 | aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT; |
1175 | ||
a5479e38 | 1176 | switch (rx_mask) { |
86ed3669 MB |
1177 | case 1: |
1178 | break; | |
1179 | case 2: | |
1180 | aif1 |= 0x10; | |
1181 | break; | |
1182 | case 4: | |
1183 | aif1 |= 0x20; | |
1184 | break; | |
1185 | case 8: | |
1186 | aif1 |= 0x30; | |
1187 | break; | |
1188 | default: | |
1189 | return -EINVAL; | |
1190 | } | |
1191 | ||
8d50e447 | 1192 | snd_soc_write(codec, WM9081_AUDIO_INTERFACE_1, aif1); |
86ed3669 MB |
1193 | |
1194 | return 0; | |
1195 | } | |
1196 | ||
1197 | #define WM9081_RATES SNDRV_PCM_RATE_8000_96000 | |
1198 | ||
1199 | #define WM9081_FORMATS \ | |
1200 | (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
1201 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
1202 | ||
1203 | static struct snd_soc_dai_ops wm9081_dai_ops = { | |
1204 | .hw_params = wm9081_hw_params, | |
1205 | .set_sysclk = wm9081_set_sysclk, | |
1206 | .set_fmt = wm9081_set_dai_fmt, | |
1207 | .digital_mute = wm9081_digital_mute, | |
1208 | .set_tdm_slot = wm9081_set_tdm_slot, | |
1209 | }; | |
1210 | ||
1211 | /* We report two channels because the CODEC processes a stereo signal, even | |
1212 | * though it is only capable of handling a mono output. | |
1213 | */ | |
1214 | struct snd_soc_dai wm9081_dai = { | |
1215 | .name = "WM9081", | |
1216 | .playback = { | |
1217 | .stream_name = "HiFi Playback", | |
1218 | .channels_min = 1, | |
1219 | .channels_max = 2, | |
1220 | .rates = WM9081_RATES, | |
1221 | .formats = WM9081_FORMATS, | |
1222 | }, | |
1223 | .ops = &wm9081_dai_ops, | |
1224 | }; | |
1225 | EXPORT_SYMBOL_GPL(wm9081_dai); | |
1226 | ||
1227 | ||
1228 | static struct snd_soc_codec *wm9081_codec; | |
1229 | ||
1230 | static int wm9081_probe(struct platform_device *pdev) | |
1231 | { | |
1232 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1233 | struct snd_soc_codec *codec; | |
1234 | struct wm9081_priv *wm9081; | |
1235 | int ret = 0; | |
1236 | ||
1237 | if (wm9081_codec == NULL) { | |
1238 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
1239 | return -ENODEV; | |
1240 | } | |
1241 | ||
1242 | socdev->card->codec = wm9081_codec; | |
1243 | codec = wm9081_codec; | |
1244 | wm9081 = codec->private_data; | |
1245 | ||
1246 | /* register pcms */ | |
1247 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
1248 | if (ret < 0) { | |
1249 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); | |
1250 | goto pcm_err; | |
1251 | } | |
1252 | ||
1253 | snd_soc_add_controls(codec, wm9081_snd_controls, | |
1254 | ARRAY_SIZE(wm9081_snd_controls)); | |
1255 | if (!wm9081->retune) { | |
1256 | dev_dbg(codec->dev, | |
1257 | "No ReTune Mobile data, using normal EQ\n"); | |
1258 | snd_soc_add_controls(codec, wm9081_eq_controls, | |
1259 | ARRAY_SIZE(wm9081_eq_controls)); | |
1260 | } | |
1261 | ||
1262 | snd_soc_dapm_new_controls(codec, wm9081_dapm_widgets, | |
1263 | ARRAY_SIZE(wm9081_dapm_widgets)); | |
1264 | snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); | |
86ed3669 | 1265 | |
86ed3669 MB |
1266 | return ret; |
1267 | ||
86ed3669 MB |
1268 | pcm_err: |
1269 | return ret; | |
1270 | } | |
1271 | ||
1272 | static int wm9081_remove(struct platform_device *pdev) | |
1273 | { | |
1274 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1275 | ||
1276 | snd_soc_free_pcms(socdev); | |
1277 | snd_soc_dapm_free(socdev); | |
1278 | ||
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | #ifdef CONFIG_PM | |
1283 | static int wm9081_suspend(struct platform_device *pdev, pm_message_t state) | |
1284 | { | |
1285 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1286 | struct snd_soc_codec *codec = socdev->card->codec; | |
1287 | ||
1288 | wm9081_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
1289 | ||
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static int wm9081_resume(struct platform_device *pdev) | |
1294 | { | |
1295 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1296 | struct snd_soc_codec *codec = socdev->card->codec; | |
1297 | u16 *reg_cache = codec->reg_cache; | |
1298 | int i; | |
1299 | ||
1300 | for (i = 0; i < codec->reg_cache_size; i++) { | |
1301 | if (i == WM9081_SOFTWARE_RESET) | |
1302 | continue; | |
1303 | ||
8d50e447 | 1304 | snd_soc_write(codec, i, reg_cache[i]); |
86ed3669 MB |
1305 | } |
1306 | ||
1307 | wm9081_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
1308 | ||
1309 | return 0; | |
1310 | } | |
1311 | #else | |
1312 | #define wm9081_suspend NULL | |
1313 | #define wm9081_resume NULL | |
1314 | #endif | |
1315 | ||
1316 | struct snd_soc_codec_device soc_codec_dev_wm9081 = { | |
1317 | .probe = wm9081_probe, | |
1318 | .remove = wm9081_remove, | |
1319 | .suspend = wm9081_suspend, | |
1320 | .resume = wm9081_resume, | |
1321 | }; | |
1322 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm9081); | |
1323 | ||
8d50e447 MB |
1324 | static int wm9081_register(struct wm9081_priv *wm9081, |
1325 | enum snd_soc_control_type control) | |
86ed3669 MB |
1326 | { |
1327 | struct snd_soc_codec *codec = &wm9081->codec; | |
1328 | int ret; | |
1329 | u16 reg; | |
1330 | ||
1331 | if (wm9081_codec) { | |
1332 | dev_err(codec->dev, "Another WM9081 is registered\n"); | |
1333 | ret = -EINVAL; | |
1334 | goto err; | |
1335 | } | |
1336 | ||
1337 | mutex_init(&codec->mutex); | |
1338 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
1339 | INIT_LIST_HEAD(&codec->dapm_paths); | |
1340 | ||
1341 | codec->private_data = wm9081; | |
1342 | codec->name = "WM9081"; | |
1343 | codec->owner = THIS_MODULE; | |
86ed3669 MB |
1344 | codec->dai = &wm9081_dai; |
1345 | codec->num_dai = 1; | |
1346 | codec->reg_cache_size = ARRAY_SIZE(wm9081->reg_cache); | |
1347 | codec->reg_cache = &wm9081->reg_cache; | |
1348 | codec->bias_level = SND_SOC_BIAS_OFF; | |
1349 | codec->set_bias_level = wm9081_set_bias_level; | |
8d50e447 | 1350 | codec->volatile_register = wm9081_volatile_register; |
86ed3669 MB |
1351 | |
1352 | memcpy(codec->reg_cache, wm9081_reg_defaults, | |
1353 | sizeof(wm9081_reg_defaults)); | |
1354 | ||
8d50e447 MB |
1355 | ret = snd_soc_codec_set_cache_io(codec, 8, 16, control); |
1356 | if (ret != 0) { | |
1357 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
1358 | return ret; | |
1359 | } | |
1360 | ||
1361 | reg = snd_soc_read(codec, WM9081_SOFTWARE_RESET); | |
86ed3669 MB |
1362 | if (reg != 0x9081) { |
1363 | dev_err(codec->dev, "Device is not a WM9081: ID=0x%x\n", reg); | |
1364 | ret = -EINVAL; | |
1365 | goto err; | |
1366 | } | |
1367 | ||
1368 | ret = wm9081_reset(codec); | |
1369 | if (ret < 0) { | |
1370 | dev_err(codec->dev, "Failed to issue reset\n"); | |
1371 | return ret; | |
1372 | } | |
1373 | ||
1374 | wm9081_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
1375 | ||
1376 | /* Enable zero cross by default */ | |
8d50e447 MB |
1377 | reg = snd_soc_read(codec, WM9081_ANALOGUE_LINEOUT); |
1378 | snd_soc_write(codec, WM9081_ANALOGUE_LINEOUT, reg | WM9081_LINEOUTZC); | |
1379 | reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_PGA); | |
1380 | snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_PGA, | |
86ed3669 MB |
1381 | reg | WM9081_SPKPGAZC); |
1382 | ||
1383 | wm9081_dai.dev = codec->dev; | |
1384 | ||
1385 | wm9081_codec = codec; | |
1386 | ||
1387 | ret = snd_soc_register_codec(codec); | |
1388 | if (ret != 0) { | |
1389 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1390 | return ret; | |
1391 | } | |
1392 | ||
1393 | ret = snd_soc_register_dai(&wm9081_dai); | |
1394 | if (ret != 0) { | |
1395 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1396 | snd_soc_unregister_codec(codec); | |
1397 | return ret; | |
1398 | } | |
1399 | ||
1400 | return 0; | |
1401 | ||
1402 | err: | |
1403 | kfree(wm9081); | |
1404 | return ret; | |
1405 | } | |
1406 | ||
1407 | static void wm9081_unregister(struct wm9081_priv *wm9081) | |
1408 | { | |
1409 | wm9081_set_bias_level(&wm9081->codec, SND_SOC_BIAS_OFF); | |
1410 | snd_soc_unregister_dai(&wm9081_dai); | |
1411 | snd_soc_unregister_codec(&wm9081->codec); | |
1412 | kfree(wm9081); | |
1413 | wm9081_codec = NULL; | |
1414 | } | |
1415 | ||
1416 | static __devinit int wm9081_i2c_probe(struct i2c_client *i2c, | |
1417 | const struct i2c_device_id *id) | |
1418 | { | |
1419 | struct wm9081_priv *wm9081; | |
1420 | struct snd_soc_codec *codec; | |
1421 | ||
1422 | wm9081 = kzalloc(sizeof(struct wm9081_priv), GFP_KERNEL); | |
1423 | if (wm9081 == NULL) | |
1424 | return -ENOMEM; | |
1425 | ||
1426 | codec = &wm9081->codec; | |
1427 | codec->hw_write = (hw_write_t)i2c_master_send; | |
1428 | wm9081->retune = i2c->dev.platform_data; | |
1429 | ||
1430 | i2c_set_clientdata(i2c, wm9081); | |
1431 | codec->control_data = i2c; | |
1432 | ||
1433 | codec->dev = &i2c->dev; | |
1434 | ||
8d50e447 | 1435 | return wm9081_register(wm9081, SND_SOC_I2C); |
86ed3669 MB |
1436 | } |
1437 | ||
1438 | static __devexit int wm9081_i2c_remove(struct i2c_client *client) | |
1439 | { | |
1440 | struct wm9081_priv *wm9081 = i2c_get_clientdata(client); | |
1441 | wm9081_unregister(wm9081); | |
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | static const struct i2c_device_id wm9081_i2c_id[] = { | |
1446 | { "wm9081", 0 }, | |
1447 | { } | |
1448 | }; | |
1449 | MODULE_DEVICE_TABLE(i2c, wm9081_i2c_id); | |
1450 | ||
1451 | static struct i2c_driver wm9081_i2c_driver = { | |
1452 | .driver = { | |
1453 | .name = "wm9081", | |
1454 | .owner = THIS_MODULE, | |
1455 | }, | |
1456 | .probe = wm9081_i2c_probe, | |
1457 | .remove = __devexit_p(wm9081_i2c_remove), | |
1458 | .id_table = wm9081_i2c_id, | |
1459 | }; | |
1460 | ||
1461 | static int __init wm9081_modinit(void) | |
1462 | { | |
1463 | int ret; | |
1464 | ||
1465 | ret = i2c_add_driver(&wm9081_i2c_driver); | |
1466 | if (ret != 0) { | |
1467 | printk(KERN_ERR "Failed to register WM9081 I2C driver: %d\n", | |
1468 | ret); | |
1469 | } | |
1470 | ||
1471 | return ret; | |
1472 | } | |
1473 | module_init(wm9081_modinit); | |
1474 | ||
1475 | static void __exit wm9081_exit(void) | |
1476 | { | |
1477 | i2c_del_driver(&wm9081_i2c_driver); | |
1478 | } | |
1479 | module_exit(wm9081_exit); | |
1480 | ||
1481 | ||
1482 | MODULE_DESCRIPTION("ASoC WM9081 driver"); | |
1483 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
1484 | MODULE_LICENSE("GPL"); |