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0b5e92c5 JC |
1 | /* |
2 | * wm8940.c -- WM8940 ALSA Soc Audio driver | |
3 | * | |
4 | * Author: Jonathan Cameron <jic23@cam.ac.uk> | |
5 | * | |
6 | * Based on wm8510.c | |
7 | * Copyright 2006 Wolfson Microelectronics PLC. | |
8 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * Not currently handled: | |
15 | * Notch filter control | |
16 | * AUXMode (inverting vs mixer) | |
17 | * No means to obtain current gain if alc enabled. | |
18 | * No use made of gpio | |
19 | * Fast VMID discharge for power down | |
20 | * Soft Start | |
21 | * DLR and ALR Swaps not enabled | |
22 | * Digital Sidetone not supported | |
23 | */ | |
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/pm.h> | |
30 | #include <linux/i2c.h> | |
31 | #include <linux/platform_device.h> | |
32 | #include <linux/spi/spi.h> | |
33 | #include <sound/core.h> | |
34 | #include <sound/pcm.h> | |
35 | #include <sound/pcm_params.h> | |
36 | #include <sound/soc.h> | |
37 | #include <sound/soc-dapm.h> | |
38 | #include <sound/initval.h> | |
39 | #include <sound/tlv.h> | |
40 | ||
41 | #include "wm8940.h" | |
42 | ||
43 | struct wm8940_priv { | |
44 | unsigned int sysclk; | |
45 | u16 reg_cache[WM8940_CACHEREGNUM]; | |
46 | struct snd_soc_codec codec; | |
47 | }; | |
48 | ||
49 | static u16 wm8940_reg_defaults[] = { | |
50 | 0x8940, /* Soft Reset */ | |
51 | 0x0000, /* Power 1 */ | |
52 | 0x0000, /* Power 2 */ | |
53 | 0x0000, /* Power 3 */ | |
54 | 0x0010, /* Interface Control */ | |
55 | 0x0000, /* Companding Control */ | |
56 | 0x0140, /* Clock Control */ | |
57 | 0x0000, /* Additional Controls */ | |
58 | 0x0000, /* GPIO Control */ | |
59 | 0x0002, /* Auto Increment Control */ | |
60 | 0x0000, /* DAC Control */ | |
61 | 0x00FF, /* DAC Volume */ | |
62 | 0, | |
63 | 0, | |
64 | 0x0100, /* ADC Control */ | |
65 | 0x00FF, /* ADC Volume */ | |
66 | 0x0000, /* Notch Filter 1 Control 1 */ | |
67 | 0x0000, /* Notch Filter 1 Control 2 */ | |
68 | 0x0000, /* Notch Filter 2 Control 1 */ | |
69 | 0x0000, /* Notch Filter 2 Control 2 */ | |
70 | 0x0000, /* Notch Filter 3 Control 1 */ | |
71 | 0x0000, /* Notch Filter 3 Control 2 */ | |
72 | 0x0000, /* Notch Filter 4 Control 1 */ | |
73 | 0x0000, /* Notch Filter 4 Control 2 */ | |
74 | 0x0032, /* DAC Limit Control 1 */ | |
75 | 0x0000, /* DAC Limit Control 2 */ | |
76 | 0, | |
77 | 0, | |
78 | 0, | |
79 | 0, | |
80 | 0, | |
81 | 0, | |
82 | 0x0038, /* ALC Control 1 */ | |
83 | 0x000B, /* ALC Control 2 */ | |
84 | 0x0032, /* ALC Control 3 */ | |
85 | 0x0000, /* Noise Gate */ | |
86 | 0x0041, /* PLLN */ | |
87 | 0x000C, /* PLLK1 */ | |
88 | 0x0093, /* PLLK2 */ | |
89 | 0x00E9, /* PLLK3 */ | |
90 | 0, | |
91 | 0, | |
92 | 0x0030, /* ALC Control 4 */ | |
93 | 0, | |
94 | 0x0002, /* Input Control */ | |
95 | 0x0050, /* PGA Gain */ | |
96 | 0, | |
97 | 0x0002, /* ADC Boost Control */ | |
98 | 0, | |
99 | 0x0002, /* Output Control */ | |
100 | 0x0000, /* Speaker Mixer Control */ | |
101 | 0, | |
102 | 0, | |
103 | 0, | |
104 | 0x0079, /* Speaker Volume */ | |
105 | 0, | |
106 | 0x0000, /* Mono Mixer Control */ | |
107 | }; | |
108 | ||
0b5e92c5 JC |
109 | static const char *wm8940_companding[] = { "Off", "NC", "u-law", "A-law" }; |
110 | static const struct soc_enum wm8940_adc_companding_enum | |
111 | = SOC_ENUM_SINGLE(WM8940_COMPANDINGCTL, 1, 4, wm8940_companding); | |
112 | static const struct soc_enum wm8940_dac_companding_enum | |
113 | = SOC_ENUM_SINGLE(WM8940_COMPANDINGCTL, 3, 4, wm8940_companding); | |
114 | ||
115 | static const char *wm8940_alc_mode_text[] = {"ALC", "Limiter"}; | |
116 | static const struct soc_enum wm8940_alc_mode_enum | |
117 | = SOC_ENUM_SINGLE(WM8940_ALC3, 8, 2, wm8940_alc_mode_text); | |
118 | ||
119 | static const char *wm8940_mic_bias_level_text[] = {"0.9", "0.65"}; | |
120 | static const struct soc_enum wm8940_mic_bias_level_enum | |
121 | = SOC_ENUM_SINGLE(WM8940_INPUTCTL, 8, 2, wm8940_mic_bias_level_text); | |
122 | ||
123 | static const char *wm8940_filter_mode_text[] = {"Audio", "Application"}; | |
124 | static const struct soc_enum wm8940_filter_mode_enum | |
125 | = SOC_ENUM_SINGLE(WM8940_ADC, 7, 2, wm8940_filter_mode_text); | |
126 | ||
6be01cfb MB |
127 | static DECLARE_TLV_DB_SCALE(wm8940_spk_vol_tlv, -5700, 100, 1); |
128 | static DECLARE_TLV_DB_SCALE(wm8940_att_tlv, -1000, 1000, 0); | |
129 | static DECLARE_TLV_DB_SCALE(wm8940_pga_vol_tlv, -1200, 75, 0); | |
130 | static DECLARE_TLV_DB_SCALE(wm8940_alc_min_tlv, -1200, 600, 0); | |
131 | static DECLARE_TLV_DB_SCALE(wm8940_alc_max_tlv, 675, 600, 0); | |
132 | static DECLARE_TLV_DB_SCALE(wm8940_alc_tar_tlv, -2250, 50, 0); | |
133 | static DECLARE_TLV_DB_SCALE(wm8940_lim_boost_tlv, 0, 100, 0); | |
134 | static DECLARE_TLV_DB_SCALE(wm8940_lim_thresh_tlv, -600, 100, 0); | |
135 | static DECLARE_TLV_DB_SCALE(wm8940_adc_tlv, -12750, 50, 1); | |
136 | static DECLARE_TLV_DB_SCALE(wm8940_capture_boost_vol_tlv, 0, 2000, 0); | |
0b5e92c5 JC |
137 | |
138 | static const struct snd_kcontrol_new wm8940_snd_controls[] = { | |
139 | SOC_SINGLE("Digital Loopback Switch", WM8940_COMPANDINGCTL, | |
140 | 6, 1, 0), | |
141 | SOC_ENUM("DAC Companding", wm8940_dac_companding_enum), | |
142 | SOC_ENUM("ADC Companding", wm8940_adc_companding_enum), | |
143 | ||
144 | SOC_ENUM("ALC Mode", wm8940_alc_mode_enum), | |
145 | SOC_SINGLE("ALC Switch", WM8940_ALC1, 8, 1, 0), | |
146 | SOC_SINGLE_TLV("ALC Capture Max Gain", WM8940_ALC1, | |
147 | 3, 7, 1, wm8940_alc_max_tlv), | |
148 | SOC_SINGLE_TLV("ALC Capture Min Gain", WM8940_ALC1, | |
149 | 0, 7, 0, wm8940_alc_min_tlv), | |
150 | SOC_SINGLE_TLV("ALC Capture Target", WM8940_ALC2, | |
151 | 0, 14, 0, wm8940_alc_tar_tlv), | |
152 | SOC_SINGLE("ALC Capture Hold", WM8940_ALC2, 4, 10, 0), | |
153 | SOC_SINGLE("ALC Capture Decay", WM8940_ALC3, 4, 10, 0), | |
154 | SOC_SINGLE("ALC Capture Attach", WM8940_ALC3, 0, 10, 0), | |
155 | SOC_SINGLE("ALC ZC Switch", WM8940_ALC4, 1, 1, 0), | |
156 | SOC_SINGLE("ALC Capture Noise Gate Switch", WM8940_NOISEGATE, | |
157 | 3, 1, 0), | |
158 | SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8940_NOISEGATE, | |
159 | 0, 7, 0), | |
160 | ||
161 | SOC_SINGLE("DAC Playback Limiter Switch", WM8940_DACLIM1, 8, 1, 0), | |
162 | SOC_SINGLE("DAC Playback Limiter Attack", WM8940_DACLIM1, 0, 9, 0), | |
163 | SOC_SINGLE("DAC Playback Limiter Decay", WM8940_DACLIM1, 4, 11, 0), | |
164 | SOC_SINGLE_TLV("DAC Playback Limiter Threshold", WM8940_DACLIM2, | |
165 | 4, 9, 1, wm8940_lim_thresh_tlv), | |
166 | SOC_SINGLE_TLV("DAC Playback Limiter Boost", WM8940_DACLIM2, | |
167 | 0, 12, 0, wm8940_lim_boost_tlv), | |
168 | ||
169 | SOC_SINGLE("Capture PGA ZC Switch", WM8940_PGAGAIN, 7, 1, 0), | |
170 | SOC_SINGLE_TLV("Capture PGA Volume", WM8940_PGAGAIN, | |
171 | 0, 63, 0, wm8940_pga_vol_tlv), | |
172 | SOC_SINGLE_TLV("Digital Playback Volume", WM8940_DACVOL, | |
173 | 0, 255, 0, wm8940_adc_tlv), | |
174 | SOC_SINGLE_TLV("Digital Capture Volume", WM8940_ADCVOL, | |
175 | 0, 255, 0, wm8940_adc_tlv), | |
176 | SOC_ENUM("Mic Bias Level", wm8940_mic_bias_level_enum), | |
177 | SOC_SINGLE_TLV("Capture Boost Volue", WM8940_ADCBOOST, | |
178 | 8, 1, 0, wm8940_capture_boost_vol_tlv), | |
179 | SOC_SINGLE_TLV("Speaker Playback Volume", WM8940_SPKVOL, | |
180 | 0, 63, 0, wm8940_spk_vol_tlv), | |
181 | SOC_SINGLE("Speaker Playback Switch", WM8940_SPKVOL, 6, 1, 1), | |
182 | ||
183 | SOC_SINGLE_TLV("Speaker Mixer Line Bypass Volume", WM8940_SPKVOL, | |
184 | 8, 1, 1, wm8940_att_tlv), | |
185 | SOC_SINGLE("Speaker Playback ZC Switch", WM8940_SPKVOL, 7, 1, 0), | |
186 | ||
187 | SOC_SINGLE("Mono Out Switch", WM8940_MONOMIX, 6, 1, 1), | |
188 | SOC_SINGLE_TLV("Mono Mixer Line Bypass Volume", WM8940_MONOMIX, | |
189 | 7, 1, 1, wm8940_att_tlv), | |
190 | ||
191 | SOC_SINGLE("High Pass Filter Switch", WM8940_ADC, 8, 1, 0), | |
192 | SOC_ENUM("High Pass Filter Mode", wm8940_filter_mode_enum), | |
193 | SOC_SINGLE("High Pass Filter Cut Off", WM8940_ADC, 4, 7, 0), | |
194 | SOC_SINGLE("ADC Inversion Switch", WM8940_ADC, 0, 1, 0), | |
195 | SOC_SINGLE("DAC Inversion Switch", WM8940_DAC, 0, 1, 0), | |
196 | SOC_SINGLE("DAC Auto Mute Switch", WM8940_DAC, 2, 1, 0), | |
197 | SOC_SINGLE("ZC Timeout Clock Switch", WM8940_ADDCNTRL, 0, 1, 0), | |
198 | }; | |
199 | ||
200 | static const struct snd_kcontrol_new wm8940_speaker_mixer_controls[] = { | |
201 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8940_SPKMIX, 1, 1, 0), | |
202 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8940_SPKMIX, 5, 1, 0), | |
203 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8940_SPKMIX, 0, 1, 0), | |
204 | }; | |
205 | ||
206 | static const struct snd_kcontrol_new wm8940_mono_mixer_controls[] = { | |
207 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8940_MONOMIX, 1, 1, 0), | |
208 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8940_MONOMIX, 2, 1, 0), | |
209 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8940_MONOMIX, 0, 1, 0), | |
210 | }; | |
211 | ||
6be01cfb | 212 | static DECLARE_TLV_DB_SCALE(wm8940_boost_vol_tlv, -1500, 300, 1); |
0b5e92c5 JC |
213 | static const struct snd_kcontrol_new wm8940_input_boost_controls[] = { |
214 | SOC_DAPM_SINGLE("Mic PGA Switch", WM8940_PGAGAIN, 6, 1, 1), | |
215 | SOC_DAPM_SINGLE_TLV("Aux Volume", WM8940_ADCBOOST, | |
216 | 0, 7, 0, wm8940_boost_vol_tlv), | |
217 | SOC_DAPM_SINGLE_TLV("Mic Volume", WM8940_ADCBOOST, | |
218 | 4, 7, 0, wm8940_boost_vol_tlv), | |
219 | }; | |
220 | ||
221 | static const struct snd_kcontrol_new wm8940_micpga_controls[] = { | |
222 | SOC_DAPM_SINGLE("AUX Switch", WM8940_INPUTCTL, 2, 1, 0), | |
223 | SOC_DAPM_SINGLE("MICP Switch", WM8940_INPUTCTL, 0, 1, 0), | |
224 | SOC_DAPM_SINGLE("MICN Switch", WM8940_INPUTCTL, 1, 1, 0), | |
225 | }; | |
226 | ||
227 | static const struct snd_soc_dapm_widget wm8940_dapm_widgets[] = { | |
228 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8940_POWER3, 2, 0, | |
229 | &wm8940_speaker_mixer_controls[0], | |
230 | ARRAY_SIZE(wm8940_speaker_mixer_controls)), | |
231 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8940_POWER3, 3, 0, | |
232 | &wm8940_mono_mixer_controls[0], | |
233 | ARRAY_SIZE(wm8940_mono_mixer_controls)), | |
234 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8940_POWER3, 0, 0), | |
235 | ||
236 | SND_SOC_DAPM_PGA("SpkN Out", WM8940_POWER3, 5, 0, NULL, 0), | |
237 | SND_SOC_DAPM_PGA("SpkP Out", WM8940_POWER3, 6, 0, NULL, 0), | |
238 | SND_SOC_DAPM_PGA("Mono Out", WM8940_POWER3, 7, 0, NULL, 0), | |
239 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
240 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), | |
241 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), | |
242 | ||
243 | SND_SOC_DAPM_PGA("Aux Input", WM8940_POWER1, 6, 0, NULL, 0), | |
244 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8940_POWER2, 0, 0), | |
245 | SND_SOC_DAPM_MIXER("Mic PGA", WM8940_POWER2, 2, 0, | |
246 | &wm8940_micpga_controls[0], | |
247 | ARRAY_SIZE(wm8940_micpga_controls)), | |
248 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8940_POWER2, 4, 0, | |
249 | &wm8940_input_boost_controls[0], | |
250 | ARRAY_SIZE(wm8940_input_boost_controls)), | |
251 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8940_POWER1, 4, 0), | |
252 | ||
253 | SND_SOC_DAPM_INPUT("MICN"), | |
254 | SND_SOC_DAPM_INPUT("MICP"), | |
255 | SND_SOC_DAPM_INPUT("AUX"), | |
256 | }; | |
257 | ||
258 | static const struct snd_soc_dapm_route audio_map[] = { | |
259 | /* Mono output mixer */ | |
260 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, | |
261 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, | |
262 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
263 | ||
264 | /* Speaker output mixer */ | |
265 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, | |
266 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, | |
267 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
268 | ||
269 | /* Outputs */ | |
270 | {"Mono Out", NULL, "Mono Mixer"}, | |
271 | {"MONOOUT", NULL, "Mono Out"}, | |
272 | {"SpkN Out", NULL, "Speaker Mixer"}, | |
273 | {"SpkP Out", NULL, "Speaker Mixer"}, | |
274 | {"SPKOUTN", NULL, "SpkN Out"}, | |
275 | {"SPKOUTP", NULL, "SpkP Out"}, | |
276 | ||
277 | /* Microphone PGA */ | |
278 | {"Mic PGA", "MICN Switch", "MICN"}, | |
279 | {"Mic PGA", "MICP Switch", "MICP"}, | |
280 | {"Mic PGA", "AUX Switch", "AUX"}, | |
281 | ||
282 | /* Boost Mixer */ | |
283 | {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, | |
284 | {"Boost Mixer", "Mic Volume", "MICP"}, | |
285 | {"Boost Mixer", "Aux Volume", "Aux Input"}, | |
286 | ||
287 | {"ADC", NULL, "Boost Mixer"}, | |
288 | }; | |
289 | ||
290 | static int wm8940_add_widgets(struct snd_soc_codec *codec) | |
291 | { | |
292 | int ret; | |
293 | ||
294 | ret = snd_soc_dapm_new_controls(codec, wm8940_dapm_widgets, | |
295 | ARRAY_SIZE(wm8940_dapm_widgets)); | |
296 | if (ret) | |
297 | goto error_ret; | |
298 | ret = snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
299 | if (ret) | |
300 | goto error_ret; | |
301 | ret = snd_soc_dapm_new_widgets(codec); | |
302 | ||
303 | error_ret: | |
304 | return ret; | |
305 | } | |
306 | ||
8d50e447 | 307 | #define wm8940_reset(c) snd_soc_write(c, WM8940_SOFTRESET, 0); |
0b5e92c5 JC |
308 | |
309 | static int wm8940_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
310 | unsigned int fmt) | |
311 | { | |
312 | struct snd_soc_codec *codec = codec_dai->codec; | |
8d50e447 MB |
313 | u16 iface = snd_soc_read(codec, WM8940_IFACE) & 0xFE67; |
314 | u16 clk = snd_soc_read(codec, WM8940_CLOCK) & 0x1fe; | |
0b5e92c5 JC |
315 | |
316 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
317 | case SND_SOC_DAIFMT_CBM_CFM: | |
318 | clk |= 1; | |
319 | break; | |
320 | case SND_SOC_DAIFMT_CBS_CFS: | |
321 | break; | |
322 | default: | |
323 | return -EINVAL; | |
324 | } | |
8d50e447 | 325 | snd_soc_write(codec, WM8940_CLOCK, clk); |
0b5e92c5 JC |
326 | |
327 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
328 | case SND_SOC_DAIFMT_I2S: | |
329 | iface |= (2 << 3); | |
330 | break; | |
331 | case SND_SOC_DAIFMT_LEFT_J: | |
332 | iface |= (1 << 3); | |
333 | break; | |
334 | case SND_SOC_DAIFMT_RIGHT_J: | |
335 | break; | |
336 | case SND_SOC_DAIFMT_DSP_A: | |
337 | iface |= (3 << 3); | |
338 | break; | |
339 | case SND_SOC_DAIFMT_DSP_B: | |
340 | iface |= (3 << 3) | (1 << 7); | |
341 | break; | |
342 | } | |
343 | ||
344 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
345 | case SND_SOC_DAIFMT_NB_NF: | |
346 | break; | |
347 | case SND_SOC_DAIFMT_NB_IF: | |
348 | iface |= (1 << 7); | |
349 | break; | |
350 | case SND_SOC_DAIFMT_IB_NF: | |
351 | iface |= (1 << 8); | |
352 | break; | |
353 | case SND_SOC_DAIFMT_IB_IF: | |
354 | iface |= (1 << 8) | (1 << 7); | |
355 | break; | |
356 | } | |
357 | ||
8d50e447 | 358 | snd_soc_write(codec, WM8940_IFACE, iface); |
0b5e92c5 JC |
359 | |
360 | return 0; | |
361 | } | |
362 | ||
363 | static int wm8940_i2s_hw_params(struct snd_pcm_substream *substream, | |
364 | struct snd_pcm_hw_params *params, | |
365 | struct snd_soc_dai *dai) | |
366 | { | |
367 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
368 | struct snd_soc_device *socdev = rtd->socdev; | |
369 | struct snd_soc_codec *codec = socdev->card->codec; | |
8d50e447 MB |
370 | u16 iface = snd_soc_read(codec, WM8940_IFACE) & 0xFD9F; |
371 | u16 addcntrl = snd_soc_read(codec, WM8940_ADDCNTRL) & 0xFFF1; | |
372 | u16 companding = snd_soc_read(codec, | |
0b5e92c5 JC |
373 | WM8940_COMPANDINGCTL) & 0xFFDF; |
374 | int ret; | |
375 | ||
376 | /* LoutR control */ | |
377 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE | |
378 | && params_channels(params) == 2) | |
379 | iface |= (1 << 9); | |
380 | ||
381 | switch (params_rate(params)) { | |
382 | case SNDRV_PCM_RATE_8000: | |
383 | addcntrl |= (0x5 << 1); | |
384 | break; | |
385 | case SNDRV_PCM_RATE_11025: | |
386 | addcntrl |= (0x4 << 1); | |
387 | break; | |
388 | case SNDRV_PCM_RATE_16000: | |
389 | addcntrl |= (0x3 << 1); | |
390 | break; | |
391 | case SNDRV_PCM_RATE_22050: | |
392 | addcntrl |= (0x2 << 1); | |
393 | break; | |
394 | case SNDRV_PCM_RATE_32000: | |
395 | addcntrl |= (0x1 << 1); | |
396 | break; | |
397 | case SNDRV_PCM_RATE_44100: | |
398 | case SNDRV_PCM_RATE_48000: | |
399 | break; | |
400 | } | |
8d50e447 | 401 | ret = snd_soc_write(codec, WM8940_ADDCNTRL, addcntrl); |
0b5e92c5 JC |
402 | if (ret) |
403 | goto error_ret; | |
404 | ||
405 | switch (params_format(params)) { | |
406 | case SNDRV_PCM_FORMAT_S8: | |
407 | companding = companding | (1 << 5); | |
408 | break; | |
409 | case SNDRV_PCM_FORMAT_S16_LE: | |
410 | break; | |
411 | case SNDRV_PCM_FORMAT_S20_3LE: | |
412 | iface |= (1 << 5); | |
413 | break; | |
414 | case SNDRV_PCM_FORMAT_S24_LE: | |
415 | iface |= (2 << 5); | |
416 | break; | |
417 | case SNDRV_PCM_FORMAT_S32_LE: | |
418 | iface |= (3 << 5); | |
419 | break; | |
420 | } | |
8d50e447 | 421 | ret = snd_soc_write(codec, WM8940_COMPANDINGCTL, companding); |
0b5e92c5 JC |
422 | if (ret) |
423 | goto error_ret; | |
8d50e447 | 424 | ret = snd_soc_write(codec, WM8940_IFACE, iface); |
0b5e92c5 JC |
425 | |
426 | error_ret: | |
427 | return ret; | |
428 | } | |
429 | ||
430 | static int wm8940_mute(struct snd_soc_dai *dai, int mute) | |
431 | { | |
432 | struct snd_soc_codec *codec = dai->codec; | |
8d50e447 | 433 | u16 mute_reg = snd_soc_read(codec, WM8940_DAC) & 0xffbf; |
0b5e92c5 JC |
434 | |
435 | if (mute) | |
436 | mute_reg |= 0x40; | |
437 | ||
8d50e447 | 438 | return snd_soc_write(codec, WM8940_DAC, mute_reg); |
0b5e92c5 JC |
439 | } |
440 | ||
441 | static int wm8940_set_bias_level(struct snd_soc_codec *codec, | |
442 | enum snd_soc_bias_level level) | |
443 | { | |
444 | u16 val; | |
8d50e447 | 445 | u16 pwr_reg = snd_soc_read(codec, WM8940_POWER1) & 0x1F0; |
0b5e92c5 JC |
446 | int ret = 0; |
447 | ||
448 | switch (level) { | |
449 | case SND_SOC_BIAS_ON: | |
450 | /* ensure bufioen and biasen */ | |
451 | pwr_reg |= (1 << 2) | (1 << 3); | |
452 | /* Enable thermal shutdown */ | |
8d50e447 MB |
453 | val = snd_soc_read(codec, WM8940_OUTPUTCTL); |
454 | ret = snd_soc_write(codec, WM8940_OUTPUTCTL, val | 0x2); | |
0b5e92c5 JC |
455 | if (ret) |
456 | break; | |
457 | /* set vmid to 75k */ | |
8d50e447 | 458 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x1); |
0b5e92c5 JC |
459 | break; |
460 | case SND_SOC_BIAS_PREPARE: | |
461 | /* ensure bufioen and biasen */ | |
462 | pwr_reg |= (1 << 2) | (1 << 3); | |
8d50e447 | 463 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x1); |
0b5e92c5 JC |
464 | break; |
465 | case SND_SOC_BIAS_STANDBY: | |
466 | /* ensure bufioen and biasen */ | |
467 | pwr_reg |= (1 << 2) | (1 << 3); | |
468 | /* set vmid to 300k for standby */ | |
8d50e447 | 469 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x2); |
0b5e92c5 JC |
470 | break; |
471 | case SND_SOC_BIAS_OFF: | |
8d50e447 | 472 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg); |
0b5e92c5 JC |
473 | break; |
474 | } | |
475 | ||
476 | return ret; | |
477 | } | |
478 | ||
479 | struct pll_ { | |
480 | unsigned int pre_scale:2; | |
481 | unsigned int n:4; | |
482 | unsigned int k; | |
483 | }; | |
484 | ||
485 | static struct pll_ pll_div; | |
486 | ||
487 | /* The size in bits of the pll divide multiplied by 10 | |
488 | * to allow rounding later */ | |
489 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
490 | static void pll_factors(unsigned int target, unsigned int source) | |
491 | { | |
492 | unsigned long long Kpart; | |
493 | unsigned int K, Ndiv, Nmod; | |
494 | /* The left shift ist to avoid accuracy loss when right shifting */ | |
495 | Ndiv = target / source; | |
496 | ||
497 | if (Ndiv > 12) { | |
498 | source <<= 1; | |
499 | /* Multiply by 2 */ | |
500 | pll_div.pre_scale = 0; | |
501 | Ndiv = target / source; | |
502 | } else if (Ndiv < 3) { | |
503 | source >>= 2; | |
504 | /* Divide by 4 */ | |
505 | pll_div.pre_scale = 3; | |
506 | Ndiv = target / source; | |
507 | } else if (Ndiv < 6) { | |
508 | source >>= 1; | |
509 | /* divide by 2 */ | |
510 | pll_div.pre_scale = 2; | |
511 | Ndiv = target / source; | |
512 | } else | |
513 | pll_div.pre_scale = 1; | |
514 | ||
515 | if ((Ndiv < 6) || (Ndiv > 12)) | |
516 | printk(KERN_WARNING | |
517 | "WM8940 N value %d outwith recommended range!d\n", | |
518 | Ndiv); | |
519 | ||
520 | pll_div.n = Ndiv; | |
521 | Nmod = target % source; | |
522 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
523 | ||
524 | do_div(Kpart, source); | |
525 | ||
526 | K = Kpart & 0xFFFFFFFF; | |
527 | ||
528 | /* Check if we need to round */ | |
529 | if ((K % 10) >= 5) | |
530 | K += 5; | |
531 | ||
532 | /* Move down to proper range now rounding is done */ | |
533 | K /= 10; | |
534 | ||
535 | pll_div.k = K; | |
536 | } | |
537 | ||
538 | /* Untested at the moment */ | |
539 | static int wm8940_set_dai_pll(struct snd_soc_dai *codec_dai, | |
540 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
541 | { | |
542 | struct snd_soc_codec *codec = codec_dai->codec; | |
543 | u16 reg; | |
544 | ||
545 | /* Turn off PLL */ | |
8d50e447 MB |
546 | reg = snd_soc_read(codec, WM8940_POWER1); |
547 | snd_soc_write(codec, WM8940_POWER1, reg & 0x1df); | |
0b5e92c5 JC |
548 | |
549 | if (freq_in == 0 || freq_out == 0) { | |
550 | /* Clock CODEC directly from MCLK */ | |
8d50e447 MB |
551 | reg = snd_soc_read(codec, WM8940_CLOCK); |
552 | snd_soc_write(codec, WM8940_CLOCK, reg & 0x0ff); | |
0b5e92c5 | 553 | /* Pll power down */ |
8d50e447 | 554 | snd_soc_write(codec, WM8940_PLLN, (1 << 7)); |
0b5e92c5 JC |
555 | return 0; |
556 | } | |
557 | ||
558 | /* Pll is followed by a frequency divide by 4 */ | |
559 | pll_factors(freq_out*4, freq_in); | |
560 | if (pll_div.k) | |
8d50e447 | 561 | snd_soc_write(codec, WM8940_PLLN, |
0b5e92c5 JC |
562 | (pll_div.pre_scale << 4) | pll_div.n | (1 << 6)); |
563 | else /* No factional component */ | |
8d50e447 | 564 | snd_soc_write(codec, WM8940_PLLN, |
0b5e92c5 | 565 | (pll_div.pre_scale << 4) | pll_div.n); |
8d50e447 MB |
566 | snd_soc_write(codec, WM8940_PLLK1, pll_div.k >> 18); |
567 | snd_soc_write(codec, WM8940_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
568 | snd_soc_write(codec, WM8940_PLLK3, pll_div.k & 0x1ff); | |
0b5e92c5 | 569 | /* Enable the PLL */ |
8d50e447 MB |
570 | reg = snd_soc_read(codec, WM8940_POWER1); |
571 | snd_soc_write(codec, WM8940_POWER1, reg | 0x020); | |
0b5e92c5 JC |
572 | |
573 | /* Run CODEC from PLL instead of MCLK */ | |
8d50e447 MB |
574 | reg = snd_soc_read(codec, WM8940_CLOCK); |
575 | snd_soc_write(codec, WM8940_CLOCK, reg | 0x100); | |
0b5e92c5 JC |
576 | |
577 | return 0; | |
578 | } | |
579 | ||
580 | static int wm8940_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
581 | int clk_id, unsigned int freq, int dir) | |
582 | { | |
583 | struct snd_soc_codec *codec = codec_dai->codec; | |
584 | struct wm8940_priv *wm8940 = codec->private_data; | |
585 | ||
586 | switch (freq) { | |
587 | case 11289600: | |
588 | case 12000000: | |
589 | case 12288000: | |
590 | case 16934400: | |
591 | case 18432000: | |
592 | wm8940->sysclk = freq; | |
593 | return 0; | |
594 | } | |
595 | return -EINVAL; | |
596 | } | |
597 | ||
598 | static int wm8940_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
599 | int div_id, int div) | |
600 | { | |
601 | struct snd_soc_codec *codec = codec_dai->codec; | |
602 | u16 reg; | |
603 | int ret = 0; | |
604 | ||
605 | switch (div_id) { | |
606 | case WM8940_BCLKDIV: | |
8d50e447 MB |
607 | reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFFEF3; |
608 | ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 2)); | |
0b5e92c5 JC |
609 | break; |
610 | case WM8940_MCLKDIV: | |
8d50e447 MB |
611 | reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFF1F; |
612 | ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 5)); | |
0b5e92c5 JC |
613 | break; |
614 | case WM8940_OPCLKDIV: | |
8d50e447 MB |
615 | reg = snd_soc_read(codec, WM8940_ADDCNTRL) & 0xFFCF; |
616 | ret = snd_soc_write(codec, WM8940_ADDCNTRL, reg | (div << 4)); | |
0b5e92c5 JC |
617 | break; |
618 | } | |
619 | return ret; | |
620 | } | |
621 | ||
622 | #define WM8940_RATES SNDRV_PCM_RATE_8000_48000 | |
623 | ||
624 | #define WM8940_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ | |
625 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
626 | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
627 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
628 | SNDRV_PCM_FMTBIT_S32_LE) | |
629 | ||
630 | static struct snd_soc_dai_ops wm8940_dai_ops = { | |
631 | .hw_params = wm8940_i2s_hw_params, | |
632 | .set_sysclk = wm8940_set_dai_sysclk, | |
633 | .digital_mute = wm8940_mute, | |
634 | .set_fmt = wm8940_set_dai_fmt, | |
635 | .set_clkdiv = wm8940_set_dai_clkdiv, | |
636 | .set_pll = wm8940_set_dai_pll, | |
637 | }; | |
638 | ||
639 | struct snd_soc_dai wm8940_dai = { | |
640 | .name = "WM8940", | |
641 | .playback = { | |
642 | .stream_name = "Playback", | |
643 | .channels_min = 1, | |
644 | .channels_max = 2, | |
645 | .rates = WM8940_RATES, | |
646 | .formats = WM8940_FORMATS, | |
647 | }, | |
648 | .capture = { | |
649 | .stream_name = "Capture", | |
650 | .channels_min = 1, | |
651 | .channels_max = 2, | |
652 | .rates = WM8940_RATES, | |
653 | .formats = WM8940_FORMATS, | |
654 | }, | |
655 | .ops = &wm8940_dai_ops, | |
656 | .symmetric_rates = 1, | |
657 | }; | |
658 | EXPORT_SYMBOL_GPL(wm8940_dai); | |
659 | ||
660 | static int wm8940_suspend(struct platform_device *pdev, pm_message_t state) | |
661 | { | |
662 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
663 | struct snd_soc_codec *codec = socdev->card->codec; | |
664 | ||
665 | return wm8940_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
666 | } | |
667 | ||
668 | static int wm8940_resume(struct platform_device *pdev) | |
669 | { | |
670 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
671 | struct snd_soc_codec *codec = socdev->card->codec; | |
672 | int i; | |
673 | int ret; | |
674 | u8 data[3]; | |
675 | u16 *cache = codec->reg_cache; | |
676 | ||
677 | /* Sync reg_cache with the hardware | |
678 | * Could use auto incremented writes to speed this up | |
679 | */ | |
680 | for (i = 0; i < ARRAY_SIZE(wm8940_reg_defaults); i++) { | |
681 | data[0] = i; | |
682 | data[1] = (cache[i] & 0xFF00) >> 8; | |
683 | data[2] = cache[i] & 0x00FF; | |
684 | ret = codec->hw_write(codec->control_data, data, 3); | |
685 | if (ret < 0) | |
686 | goto error_ret; | |
687 | else if (ret != 3) { | |
688 | ret = -EIO; | |
689 | goto error_ret; | |
690 | } | |
691 | } | |
692 | ret = wm8940_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
693 | if (ret) | |
694 | goto error_ret; | |
695 | ret = wm8940_set_bias_level(codec, codec->suspend_bias_level); | |
696 | ||
697 | error_ret: | |
698 | return ret; | |
699 | } | |
700 | ||
701 | static struct snd_soc_codec *wm8940_codec; | |
702 | ||
703 | static int wm8940_probe(struct platform_device *pdev) | |
704 | { | |
705 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
706 | struct snd_soc_codec *codec; | |
707 | ||
708 | int ret = 0; | |
709 | ||
710 | if (wm8940_codec == NULL) { | |
711 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
712 | return -ENODEV; | |
713 | } | |
714 | ||
715 | socdev->card->codec = wm8940_codec; | |
716 | codec = wm8940_codec; | |
717 | ||
718 | mutex_init(&codec->mutex); | |
719 | /* register pcms */ | |
720 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
721 | if (ret < 0) { | |
722 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); | |
723 | goto pcm_err; | |
724 | } | |
725 | ||
726 | ret = snd_soc_add_controls(codec, wm8940_snd_controls, | |
727 | ARRAY_SIZE(wm8940_snd_controls)); | |
728 | if (ret) | |
729 | goto error_free_pcms; | |
730 | ret = wm8940_add_widgets(codec); | |
731 | if (ret) | |
732 | goto error_free_pcms; | |
733 | ||
734 | ret = snd_soc_init_card(socdev); | |
735 | if (ret < 0) { | |
736 | dev_err(codec->dev, "failed to register card: %d\n", ret); | |
737 | goto error_free_pcms; | |
738 | } | |
739 | ||
740 | return ret; | |
741 | ||
742 | error_free_pcms: | |
743 | snd_soc_free_pcms(socdev); | |
744 | snd_soc_dapm_free(socdev); | |
745 | pcm_err: | |
746 | return ret; | |
747 | } | |
748 | ||
749 | static int wm8940_remove(struct platform_device *pdev) | |
750 | { | |
751 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
752 | ||
753 | snd_soc_free_pcms(socdev); | |
754 | snd_soc_dapm_free(socdev); | |
755 | ||
756 | return 0; | |
757 | } | |
758 | ||
759 | struct snd_soc_codec_device soc_codec_dev_wm8940 = { | |
760 | .probe = wm8940_probe, | |
761 | .remove = wm8940_remove, | |
762 | .suspend = wm8940_suspend, | |
763 | .resume = wm8940_resume, | |
764 | }; | |
765 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8940); | |
766 | ||
8d50e447 MB |
767 | static int wm8940_register(struct wm8940_priv *wm8940, |
768 | enum snd_soc_control_type control) | |
0b5e92c5 JC |
769 | { |
770 | struct wm8940_setup_data *pdata = wm8940->codec.dev->platform_data; | |
771 | struct snd_soc_codec *codec = &wm8940->codec; | |
772 | int ret; | |
773 | u16 reg; | |
774 | if (wm8940_codec) { | |
775 | dev_err(codec->dev, "Another WM8940 is registered\n"); | |
776 | return -EINVAL; | |
777 | } | |
778 | ||
779 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
780 | INIT_LIST_HEAD(&codec->dapm_paths); | |
781 | ||
782 | codec->private_data = wm8940; | |
783 | codec->name = "WM8940"; | |
784 | codec->owner = THIS_MODULE; | |
0b5e92c5 JC |
785 | codec->bias_level = SND_SOC_BIAS_OFF; |
786 | codec->set_bias_level = wm8940_set_bias_level; | |
787 | codec->dai = &wm8940_dai; | |
788 | codec->num_dai = 1; | |
789 | codec->reg_cache_size = ARRAY_SIZE(wm8940_reg_defaults); | |
790 | codec->reg_cache = &wm8940->reg_cache; | |
791 | ||
8d50e447 MB |
792 | ret = snd_soc_codec_set_cache_io(codec, 8, 16, control); |
793 | if (ret == 0) { | |
794 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
795 | return ret; | |
796 | } | |
797 | ||
0b5e92c5 JC |
798 | memcpy(codec->reg_cache, wm8940_reg_defaults, |
799 | sizeof(wm8940_reg_defaults)); | |
800 | ||
801 | ret = wm8940_reset(codec); | |
802 | if (ret < 0) { | |
803 | dev_err(codec->dev, "Failed to issue reset\n"); | |
804 | return ret; | |
805 | } | |
806 | ||
807 | wm8940_dai.dev = codec->dev; | |
808 | ||
809 | wm8940_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
810 | ||
8d50e447 | 811 | ret = snd_soc_write(codec, WM8940_POWER1, 0x180); |
0b5e92c5 JC |
812 | if (ret < 0) |
813 | return ret; | |
814 | ||
815 | if (!pdata) | |
816 | dev_warn(codec->dev, "No platform data supplied\n"); | |
817 | else { | |
8d50e447 MB |
818 | reg = snd_soc_read(codec, WM8940_OUTPUTCTL); |
819 | ret = snd_soc_write(codec, WM8940_OUTPUTCTL, reg | pdata->vroi); | |
0b5e92c5 JC |
820 | if (ret < 0) |
821 | return ret; | |
822 | } | |
823 | ||
824 | ||
825 | wm8940_codec = codec; | |
826 | ||
827 | ret = snd_soc_register_codec(codec); | |
828 | if (ret) { | |
829 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
830 | return ret; | |
831 | } | |
832 | ||
833 | ret = snd_soc_register_dai(&wm8940_dai); | |
834 | if (ret) { | |
835 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
836 | snd_soc_unregister_codec(codec); | |
837 | return ret; | |
838 | } | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | static void wm8940_unregister(struct wm8940_priv *wm8940) | |
844 | { | |
845 | wm8940_set_bias_level(&wm8940->codec, SND_SOC_BIAS_OFF); | |
846 | snd_soc_unregister_dai(&wm8940_dai); | |
847 | snd_soc_unregister_codec(&wm8940->codec); | |
848 | kfree(wm8940); | |
849 | wm8940_codec = NULL; | |
850 | } | |
851 | ||
852 | static int wm8940_i2c_probe(struct i2c_client *i2c, | |
853 | const struct i2c_device_id *id) | |
854 | { | |
855 | struct wm8940_priv *wm8940; | |
856 | struct snd_soc_codec *codec; | |
857 | ||
858 | wm8940 = kzalloc(sizeof *wm8940, GFP_KERNEL); | |
859 | if (wm8940 == NULL) | |
860 | return -ENOMEM; | |
861 | ||
862 | codec = &wm8940->codec; | |
863 | codec->hw_write = (hw_write_t)i2c_master_send; | |
864 | i2c_set_clientdata(i2c, wm8940); | |
865 | codec->control_data = i2c; | |
866 | codec->dev = &i2c->dev; | |
867 | ||
8d50e447 | 868 | return wm8940_register(wm8940, SND_SOC_I2C); |
0b5e92c5 JC |
869 | } |
870 | ||
2baaec28 | 871 | static int __devexit wm8940_i2c_remove(struct i2c_client *client) |
0b5e92c5 JC |
872 | { |
873 | struct wm8940_priv *wm8940 = i2c_get_clientdata(client); | |
874 | ||
875 | wm8940_unregister(wm8940); | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
b3b50b3f MB |
880 | #ifdef CONFIG_PM |
881 | static int wm8940_i2c_suspend(struct i2c_client *client, pm_message_t msg) | |
882 | { | |
883 | return snd_soc_suspend_device(&client->dev); | |
884 | } | |
885 | ||
886 | static int wm8940_i2c_resume(struct i2c_client *client) | |
887 | { | |
888 | return snd_soc_resume_device(&client->dev); | |
889 | } | |
890 | #else | |
891 | #define wm8940_i2c_suspend NULL | |
892 | #define wm8940_i2c_resume NULL | |
893 | #endif | |
894 | ||
0b5e92c5 JC |
895 | static const struct i2c_device_id wm8940_i2c_id[] = { |
896 | { "wm8940", 0 }, | |
897 | { } | |
898 | }; | |
899 | MODULE_DEVICE_TABLE(i2c, wm8940_i2c_id); | |
900 | ||
901 | static struct i2c_driver wm8940_i2c_driver = { | |
902 | .driver = { | |
903 | .name = "WM8940 I2C Codec", | |
904 | .owner = THIS_MODULE, | |
905 | }, | |
906 | .probe = wm8940_i2c_probe, | |
907 | .remove = __devexit_p(wm8940_i2c_remove), | |
b3b50b3f MB |
908 | .suspend = wm8940_i2c_suspend, |
909 | .resume = wm8940_i2c_resume, | |
0b5e92c5 JC |
910 | .id_table = wm8940_i2c_id, |
911 | }; | |
912 | ||
913 | static int __init wm8940_modinit(void) | |
914 | { | |
915 | int ret; | |
916 | ||
917 | ret = i2c_add_driver(&wm8940_i2c_driver); | |
918 | if (ret) | |
919 | printk(KERN_ERR "Failed to register WM8940 I2C driver: %d\n", | |
920 | ret); | |
921 | return ret; | |
922 | } | |
923 | module_init(wm8940_modinit); | |
924 | ||
925 | static void __exit wm8940_exit(void) | |
926 | { | |
927 | i2c_del_driver(&wm8940_i2c_driver); | |
928 | } | |
929 | module_exit(wm8940_exit); | |
930 | ||
931 | MODULE_DESCRIPTION("ASoC WM8940 driver"); | |
932 | MODULE_AUTHOR("Jonathan Cameron"); | |
933 | MODULE_LICENSE("GPL"); |