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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> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
0b5e92c5 JC |
34 | #include <sound/core.h> |
35 | #include <sound/pcm.h> | |
36 | #include <sound/pcm_params.h> | |
37 | #include <sound/soc.h> | |
0b5e92c5 JC |
38 | #include <sound/initval.h> |
39 | #include <sound/tlv.h> | |
40 | ||
41 | #include "wm8940.h" | |
42 | ||
43 | struct wm8940_priv { | |
44 | unsigned int sysclk; | |
f0fba2ad LG |
45 | enum snd_soc_control_type control_type; |
46 | void *control_data; | |
0b5e92c5 JC |
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 | { | |
ce6120cc | 292 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
0b5e92c5 JC |
293 | int ret; |
294 | ||
ce6120cc | 295 | ret = snd_soc_dapm_new_controls(dapm, wm8940_dapm_widgets, |
0b5e92c5 JC |
296 | ARRAY_SIZE(wm8940_dapm_widgets)); |
297 | if (ret) | |
298 | goto error_ret; | |
ce6120cc | 299 | ret = snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); |
0b5e92c5 JC |
300 | |
301 | error_ret: | |
302 | return ret; | |
303 | } | |
304 | ||
8d50e447 | 305 | #define wm8940_reset(c) snd_soc_write(c, WM8940_SOFTRESET, 0); |
0b5e92c5 JC |
306 | |
307 | static int wm8940_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
308 | unsigned int fmt) | |
309 | { | |
310 | struct snd_soc_codec *codec = codec_dai->codec; | |
8d50e447 MB |
311 | u16 iface = snd_soc_read(codec, WM8940_IFACE) & 0xFE67; |
312 | u16 clk = snd_soc_read(codec, WM8940_CLOCK) & 0x1fe; | |
0b5e92c5 JC |
313 | |
314 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
315 | case SND_SOC_DAIFMT_CBM_CFM: | |
316 | clk |= 1; | |
317 | break; | |
318 | case SND_SOC_DAIFMT_CBS_CFS: | |
319 | break; | |
320 | default: | |
321 | return -EINVAL; | |
322 | } | |
8d50e447 | 323 | snd_soc_write(codec, WM8940_CLOCK, clk); |
0b5e92c5 JC |
324 | |
325 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
326 | case SND_SOC_DAIFMT_I2S: | |
327 | iface |= (2 << 3); | |
328 | break; | |
329 | case SND_SOC_DAIFMT_LEFT_J: | |
330 | iface |= (1 << 3); | |
331 | break; | |
332 | case SND_SOC_DAIFMT_RIGHT_J: | |
333 | break; | |
334 | case SND_SOC_DAIFMT_DSP_A: | |
335 | iface |= (3 << 3); | |
336 | break; | |
337 | case SND_SOC_DAIFMT_DSP_B: | |
338 | iface |= (3 << 3) | (1 << 7); | |
339 | break; | |
340 | } | |
341 | ||
342 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
343 | case SND_SOC_DAIFMT_NB_NF: | |
344 | break; | |
345 | case SND_SOC_DAIFMT_NB_IF: | |
346 | iface |= (1 << 7); | |
347 | break; | |
348 | case SND_SOC_DAIFMT_IB_NF: | |
349 | iface |= (1 << 8); | |
350 | break; | |
351 | case SND_SOC_DAIFMT_IB_IF: | |
352 | iface |= (1 << 8) | (1 << 7); | |
353 | break; | |
354 | } | |
355 | ||
8d50e447 | 356 | snd_soc_write(codec, WM8940_IFACE, iface); |
0b5e92c5 JC |
357 | |
358 | return 0; | |
359 | } | |
360 | ||
361 | static int wm8940_i2s_hw_params(struct snd_pcm_substream *substream, | |
362 | struct snd_pcm_hw_params *params, | |
363 | struct snd_soc_dai *dai) | |
364 | { | |
365 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 366 | struct snd_soc_codec *codec = rtd->codec; |
8d50e447 MB |
367 | u16 iface = snd_soc_read(codec, WM8940_IFACE) & 0xFD9F; |
368 | u16 addcntrl = snd_soc_read(codec, WM8940_ADDCNTRL) & 0xFFF1; | |
369 | u16 companding = snd_soc_read(codec, | |
0b5e92c5 JC |
370 | WM8940_COMPANDINGCTL) & 0xFFDF; |
371 | int ret; | |
372 | ||
373 | /* LoutR control */ | |
374 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE | |
375 | && params_channels(params) == 2) | |
376 | iface |= (1 << 9); | |
377 | ||
378 | switch (params_rate(params)) { | |
b3172f22 | 379 | case 8000: |
0b5e92c5 JC |
380 | addcntrl |= (0x5 << 1); |
381 | break; | |
b3172f22 | 382 | case 11025: |
0b5e92c5 JC |
383 | addcntrl |= (0x4 << 1); |
384 | break; | |
b3172f22 | 385 | case 16000: |
0b5e92c5 JC |
386 | addcntrl |= (0x3 << 1); |
387 | break; | |
b3172f22 | 388 | case 22050: |
0b5e92c5 JC |
389 | addcntrl |= (0x2 << 1); |
390 | break; | |
b3172f22 | 391 | case 32000: |
0b5e92c5 JC |
392 | addcntrl |= (0x1 << 1); |
393 | break; | |
b3172f22 GL |
394 | case 44100: |
395 | case 48000: | |
0b5e92c5 JC |
396 | break; |
397 | } | |
8d50e447 | 398 | ret = snd_soc_write(codec, WM8940_ADDCNTRL, addcntrl); |
0b5e92c5 JC |
399 | if (ret) |
400 | goto error_ret; | |
401 | ||
402 | switch (params_format(params)) { | |
403 | case SNDRV_PCM_FORMAT_S8: | |
404 | companding = companding | (1 << 5); | |
405 | break; | |
406 | case SNDRV_PCM_FORMAT_S16_LE: | |
407 | break; | |
408 | case SNDRV_PCM_FORMAT_S20_3LE: | |
409 | iface |= (1 << 5); | |
410 | break; | |
411 | case SNDRV_PCM_FORMAT_S24_LE: | |
412 | iface |= (2 << 5); | |
413 | break; | |
414 | case SNDRV_PCM_FORMAT_S32_LE: | |
415 | iface |= (3 << 5); | |
416 | break; | |
417 | } | |
8d50e447 | 418 | ret = snd_soc_write(codec, WM8940_COMPANDINGCTL, companding); |
0b5e92c5 JC |
419 | if (ret) |
420 | goto error_ret; | |
8d50e447 | 421 | ret = snd_soc_write(codec, WM8940_IFACE, iface); |
0b5e92c5 JC |
422 | |
423 | error_ret: | |
424 | return ret; | |
425 | } | |
426 | ||
427 | static int wm8940_mute(struct snd_soc_dai *dai, int mute) | |
428 | { | |
429 | struct snd_soc_codec *codec = dai->codec; | |
8d50e447 | 430 | u16 mute_reg = snd_soc_read(codec, WM8940_DAC) & 0xffbf; |
0b5e92c5 JC |
431 | |
432 | if (mute) | |
433 | mute_reg |= 0x40; | |
434 | ||
8d50e447 | 435 | return snd_soc_write(codec, WM8940_DAC, mute_reg); |
0b5e92c5 JC |
436 | } |
437 | ||
438 | static int wm8940_set_bias_level(struct snd_soc_codec *codec, | |
439 | enum snd_soc_bias_level level) | |
440 | { | |
441 | u16 val; | |
8d50e447 | 442 | u16 pwr_reg = snd_soc_read(codec, WM8940_POWER1) & 0x1F0; |
0b5e92c5 JC |
443 | int ret = 0; |
444 | ||
445 | switch (level) { | |
446 | case SND_SOC_BIAS_ON: | |
447 | /* ensure bufioen and biasen */ | |
448 | pwr_reg |= (1 << 2) | (1 << 3); | |
449 | /* Enable thermal shutdown */ | |
8d50e447 MB |
450 | val = snd_soc_read(codec, WM8940_OUTPUTCTL); |
451 | ret = snd_soc_write(codec, WM8940_OUTPUTCTL, val | 0x2); | |
0b5e92c5 JC |
452 | if (ret) |
453 | break; | |
454 | /* set vmid to 75k */ | |
8d50e447 | 455 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x1); |
0b5e92c5 JC |
456 | break; |
457 | case SND_SOC_BIAS_PREPARE: | |
458 | /* ensure bufioen and biasen */ | |
459 | pwr_reg |= (1 << 2) | (1 << 3); | |
8d50e447 | 460 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x1); |
0b5e92c5 JC |
461 | break; |
462 | case SND_SOC_BIAS_STANDBY: | |
463 | /* ensure bufioen and biasen */ | |
464 | pwr_reg |= (1 << 2) | (1 << 3); | |
465 | /* set vmid to 300k for standby */ | |
8d50e447 | 466 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x2); |
0b5e92c5 JC |
467 | break; |
468 | case SND_SOC_BIAS_OFF: | |
8d50e447 | 469 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg); |
0b5e92c5 JC |
470 | break; |
471 | } | |
472 | ||
473 | return ret; | |
474 | } | |
475 | ||
476 | struct pll_ { | |
477 | unsigned int pre_scale:2; | |
478 | unsigned int n:4; | |
479 | unsigned int k; | |
480 | }; | |
481 | ||
482 | static struct pll_ pll_div; | |
483 | ||
484 | /* The size in bits of the pll divide multiplied by 10 | |
485 | * to allow rounding later */ | |
486 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
487 | static void pll_factors(unsigned int target, unsigned int source) | |
488 | { | |
489 | unsigned long long Kpart; | |
490 | unsigned int K, Ndiv, Nmod; | |
491 | /* The left shift ist to avoid accuracy loss when right shifting */ | |
492 | Ndiv = target / source; | |
493 | ||
494 | if (Ndiv > 12) { | |
495 | source <<= 1; | |
496 | /* Multiply by 2 */ | |
497 | pll_div.pre_scale = 0; | |
498 | Ndiv = target / source; | |
499 | } else if (Ndiv < 3) { | |
500 | source >>= 2; | |
501 | /* Divide by 4 */ | |
502 | pll_div.pre_scale = 3; | |
503 | Ndiv = target / source; | |
504 | } else if (Ndiv < 6) { | |
505 | source >>= 1; | |
506 | /* divide by 2 */ | |
507 | pll_div.pre_scale = 2; | |
508 | Ndiv = target / source; | |
509 | } else | |
510 | pll_div.pre_scale = 1; | |
511 | ||
512 | if ((Ndiv < 6) || (Ndiv > 12)) | |
513 | printk(KERN_WARNING | |
514 | "WM8940 N value %d outwith recommended range!d\n", | |
515 | Ndiv); | |
516 | ||
517 | pll_div.n = Ndiv; | |
518 | Nmod = target % source; | |
519 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
520 | ||
521 | do_div(Kpart, source); | |
522 | ||
523 | K = Kpart & 0xFFFFFFFF; | |
524 | ||
525 | /* Check if we need to round */ | |
526 | if ((K % 10) >= 5) | |
527 | K += 5; | |
528 | ||
529 | /* Move down to proper range now rounding is done */ | |
530 | K /= 10; | |
531 | ||
532 | pll_div.k = K; | |
533 | } | |
534 | ||
535 | /* Untested at the moment */ | |
85488037 MB |
536 | static int wm8940_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, |
537 | int source, unsigned int freq_in, unsigned int freq_out) | |
0b5e92c5 JC |
538 | { |
539 | struct snd_soc_codec *codec = codec_dai->codec; | |
540 | u16 reg; | |
541 | ||
542 | /* Turn off PLL */ | |
8d50e447 MB |
543 | reg = snd_soc_read(codec, WM8940_POWER1); |
544 | snd_soc_write(codec, WM8940_POWER1, reg & 0x1df); | |
0b5e92c5 JC |
545 | |
546 | if (freq_in == 0 || freq_out == 0) { | |
547 | /* Clock CODEC directly from MCLK */ | |
8d50e447 MB |
548 | reg = snd_soc_read(codec, WM8940_CLOCK); |
549 | snd_soc_write(codec, WM8940_CLOCK, reg & 0x0ff); | |
0b5e92c5 | 550 | /* Pll power down */ |
8d50e447 | 551 | snd_soc_write(codec, WM8940_PLLN, (1 << 7)); |
0b5e92c5 JC |
552 | return 0; |
553 | } | |
554 | ||
555 | /* Pll is followed by a frequency divide by 4 */ | |
556 | pll_factors(freq_out*4, freq_in); | |
557 | if (pll_div.k) | |
8d50e447 | 558 | snd_soc_write(codec, WM8940_PLLN, |
0b5e92c5 JC |
559 | (pll_div.pre_scale << 4) | pll_div.n | (1 << 6)); |
560 | else /* No factional component */ | |
8d50e447 | 561 | snd_soc_write(codec, WM8940_PLLN, |
0b5e92c5 | 562 | (pll_div.pre_scale << 4) | pll_div.n); |
8d50e447 MB |
563 | snd_soc_write(codec, WM8940_PLLK1, pll_div.k >> 18); |
564 | snd_soc_write(codec, WM8940_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
565 | snd_soc_write(codec, WM8940_PLLK3, pll_div.k & 0x1ff); | |
0b5e92c5 | 566 | /* Enable the PLL */ |
8d50e447 MB |
567 | reg = snd_soc_read(codec, WM8940_POWER1); |
568 | snd_soc_write(codec, WM8940_POWER1, reg | 0x020); | |
0b5e92c5 JC |
569 | |
570 | /* Run CODEC from PLL instead of MCLK */ | |
8d50e447 MB |
571 | reg = snd_soc_read(codec, WM8940_CLOCK); |
572 | snd_soc_write(codec, WM8940_CLOCK, reg | 0x100); | |
0b5e92c5 JC |
573 | |
574 | return 0; | |
575 | } | |
576 | ||
577 | static int wm8940_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
578 | int clk_id, unsigned int freq, int dir) | |
579 | { | |
580 | struct snd_soc_codec *codec = codec_dai->codec; | |
b2c812e2 | 581 | struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec); |
0b5e92c5 JC |
582 | |
583 | switch (freq) { | |
584 | case 11289600: | |
585 | case 12000000: | |
586 | case 12288000: | |
587 | case 16934400: | |
588 | case 18432000: | |
589 | wm8940->sysclk = freq; | |
590 | return 0; | |
591 | } | |
592 | return -EINVAL; | |
593 | } | |
594 | ||
595 | static int wm8940_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
596 | int div_id, int div) | |
597 | { | |
598 | struct snd_soc_codec *codec = codec_dai->codec; | |
599 | u16 reg; | |
600 | int ret = 0; | |
601 | ||
602 | switch (div_id) { | |
603 | case WM8940_BCLKDIV: | |
8d50e447 MB |
604 | reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFFEF3; |
605 | ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 2)); | |
0b5e92c5 JC |
606 | break; |
607 | case WM8940_MCLKDIV: | |
8d50e447 MB |
608 | reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFF1F; |
609 | ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 5)); | |
0b5e92c5 JC |
610 | break; |
611 | case WM8940_OPCLKDIV: | |
8d50e447 MB |
612 | reg = snd_soc_read(codec, WM8940_ADDCNTRL) & 0xFFCF; |
613 | ret = snd_soc_write(codec, WM8940_ADDCNTRL, reg | (div << 4)); | |
0b5e92c5 JC |
614 | break; |
615 | } | |
616 | return ret; | |
617 | } | |
618 | ||
619 | #define WM8940_RATES SNDRV_PCM_RATE_8000_48000 | |
620 | ||
621 | #define WM8940_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ | |
622 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
623 | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
624 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
625 | SNDRV_PCM_FMTBIT_S32_LE) | |
626 | ||
627 | static struct snd_soc_dai_ops wm8940_dai_ops = { | |
628 | .hw_params = wm8940_i2s_hw_params, | |
629 | .set_sysclk = wm8940_set_dai_sysclk, | |
630 | .digital_mute = wm8940_mute, | |
631 | .set_fmt = wm8940_set_dai_fmt, | |
632 | .set_clkdiv = wm8940_set_dai_clkdiv, | |
633 | .set_pll = wm8940_set_dai_pll, | |
634 | }; | |
635 | ||
f0fba2ad LG |
636 | static struct snd_soc_dai_driver wm8940_dai = { |
637 | .name = "wm8940-hifi", | |
0b5e92c5 JC |
638 | .playback = { |
639 | .stream_name = "Playback", | |
640 | .channels_min = 1, | |
641 | .channels_max = 2, | |
642 | .rates = WM8940_RATES, | |
643 | .formats = WM8940_FORMATS, | |
644 | }, | |
645 | .capture = { | |
646 | .stream_name = "Capture", | |
647 | .channels_min = 1, | |
648 | .channels_max = 2, | |
649 | .rates = WM8940_RATES, | |
650 | .formats = WM8940_FORMATS, | |
651 | }, | |
652 | .ops = &wm8940_dai_ops, | |
653 | .symmetric_rates = 1, | |
654 | }; | |
0b5e92c5 | 655 | |
f0fba2ad | 656 | static int wm8940_suspend(struct snd_soc_codec *codec, pm_message_t state) |
0b5e92c5 | 657 | { |
0b5e92c5 JC |
658 | return wm8940_set_bias_level(codec, SND_SOC_BIAS_OFF); |
659 | } | |
660 | ||
f0fba2ad | 661 | static int wm8940_resume(struct snd_soc_codec *codec) |
0b5e92c5 | 662 | { |
0b5e92c5 JC |
663 | int i; |
664 | int ret; | |
665 | u8 data[3]; | |
666 | u16 *cache = codec->reg_cache; | |
667 | ||
668 | /* Sync reg_cache with the hardware | |
669 | * Could use auto incremented writes to speed this up | |
670 | */ | |
671 | for (i = 0; i < ARRAY_SIZE(wm8940_reg_defaults); i++) { | |
672 | data[0] = i; | |
673 | data[1] = (cache[i] & 0xFF00) >> 8; | |
674 | data[2] = cache[i] & 0x00FF; | |
675 | ret = codec->hw_write(codec->control_data, data, 3); | |
676 | if (ret < 0) | |
677 | goto error_ret; | |
678 | else if (ret != 3) { | |
679 | ret = -EIO; | |
680 | goto error_ret; | |
681 | } | |
682 | } | |
683 | ret = wm8940_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
0b5e92c5 JC |
684 | |
685 | error_ret: | |
686 | return ret; | |
687 | } | |
688 | ||
f0fba2ad | 689 | static int wm8940_probe(struct snd_soc_codec *codec) |
0b5e92c5 | 690 | { |
f0fba2ad LG |
691 | struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec); |
692 | struct wm8940_setup_data *pdata = codec->dev->platform_data; | |
0b5e92c5 JC |
693 | int ret; |
694 | u16 reg; | |
0b5e92c5 | 695 | |
f0fba2ad LG |
696 | codec->control_data = wm8940->control_data; |
697 | ret = snd_soc_codec_set_cache_io(codec, 8, 16, wm8940->control_type); | |
e655a435 | 698 | if (ret < 0) { |
8d50e447 MB |
699 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); |
700 | return ret; | |
701 | } | |
702 | ||
0b5e92c5 JC |
703 | ret = wm8940_reset(codec); |
704 | if (ret < 0) { | |
705 | dev_err(codec->dev, "Failed to issue reset\n"); | |
706 | return ret; | |
707 | } | |
708 | ||
0b5e92c5 JC |
709 | wm8940_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
710 | ||
8d50e447 | 711 | ret = snd_soc_write(codec, WM8940_POWER1, 0x180); |
0b5e92c5 JC |
712 | if (ret < 0) |
713 | return ret; | |
714 | ||
715 | if (!pdata) | |
716 | dev_warn(codec->dev, "No platform data supplied\n"); | |
717 | else { | |
8d50e447 MB |
718 | reg = snd_soc_read(codec, WM8940_OUTPUTCTL); |
719 | ret = snd_soc_write(codec, WM8940_OUTPUTCTL, reg | pdata->vroi); | |
0b5e92c5 JC |
720 | if (ret < 0) |
721 | return ret; | |
722 | } | |
723 | ||
f0fba2ad LG |
724 | ret = snd_soc_add_controls(codec, wm8940_snd_controls, |
725 | ARRAY_SIZE(wm8940_snd_controls)); | |
726 | if (ret) | |
0b5e92c5 | 727 | return ret; |
f0fba2ad | 728 | ret = wm8940_add_widgets(codec); |
f0fba2ad | 729 | return ret; |
0b5e92c5 JC |
730 | } |
731 | ||
f0fba2ad | 732 | static int wm8940_remove(struct snd_soc_codec *codec) |
0b5e92c5 | 733 | { |
f0fba2ad LG |
734 | wm8940_set_bias_level(codec, SND_SOC_BIAS_OFF); |
735 | return 0; | |
0b5e92c5 JC |
736 | } |
737 | ||
f0fba2ad LG |
738 | static struct snd_soc_codec_driver soc_codec_dev_wm8940 = { |
739 | .probe = wm8940_probe, | |
740 | .remove = wm8940_remove, | |
741 | .suspend = wm8940_suspend, | |
742 | .resume = wm8940_resume, | |
743 | .set_bias_level = wm8940_set_bias_level, | |
e5eec34c | 744 | .reg_cache_size = ARRAY_SIZE(wm8940_reg_defaults), |
f0fba2ad LG |
745 | .reg_word_size = sizeof(u16), |
746 | .reg_cache_default = wm8940_reg_defaults, | |
747 | }; | |
748 | ||
749 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
750 | static __devinit int wm8940_i2c_probe(struct i2c_client *i2c, | |
751 | const struct i2c_device_id *id) | |
0b5e92c5 JC |
752 | { |
753 | struct wm8940_priv *wm8940; | |
f0fba2ad | 754 | int ret; |
0b5e92c5 | 755 | |
f0fba2ad | 756 | wm8940 = kzalloc(sizeof(struct wm8940_priv), GFP_KERNEL); |
0b5e92c5 JC |
757 | if (wm8940 == NULL) |
758 | return -ENOMEM; | |
759 | ||
0b5e92c5 | 760 | i2c_set_clientdata(i2c, wm8940); |
f0fba2ad | 761 | wm8940->control_data = i2c; |
7f984b55 | 762 | wm8940->control_type = SND_SOC_I2C; |
0b5e92c5 | 763 | |
f0fba2ad LG |
764 | ret = snd_soc_register_codec(&i2c->dev, |
765 | &soc_codec_dev_wm8940, &wm8940_dai, 1); | |
db1e18de AL |
766 | if (ret < 0) |
767 | kfree(wm8940); | |
db1e18de | 768 | return ret; |
0b5e92c5 JC |
769 | } |
770 | ||
f0fba2ad | 771 | static __devexit int wm8940_i2c_remove(struct i2c_client *client) |
0b5e92c5 | 772 | { |
f0fba2ad LG |
773 | snd_soc_unregister_codec(&client->dev); |
774 | kfree(i2c_get_clientdata(client)); | |
0b5e92c5 JC |
775 | return 0; |
776 | } | |
777 | ||
778 | static const struct i2c_device_id wm8940_i2c_id[] = { | |
779 | { "wm8940", 0 }, | |
780 | { } | |
781 | }; | |
782 | MODULE_DEVICE_TABLE(i2c, wm8940_i2c_id); | |
783 | ||
784 | static struct i2c_driver wm8940_i2c_driver = { | |
785 | .driver = { | |
f0fba2ad | 786 | .name = "wm8940-codec", |
0b5e92c5 JC |
787 | .owner = THIS_MODULE, |
788 | }, | |
f0fba2ad LG |
789 | .probe = wm8940_i2c_probe, |
790 | .remove = __devexit_p(wm8940_i2c_remove), | |
0b5e92c5 JC |
791 | .id_table = wm8940_i2c_id, |
792 | }; | |
f0fba2ad | 793 | #endif |
0b5e92c5 JC |
794 | |
795 | static int __init wm8940_modinit(void) | |
796 | { | |
f0fba2ad LG |
797 | int ret = 0; |
798 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
0b5e92c5 | 799 | ret = i2c_add_driver(&wm8940_i2c_driver); |
f0fba2ad LG |
800 | if (ret != 0) { |
801 | printk(KERN_ERR "Failed to register wm8940 I2C driver: %d\n", | |
0b5e92c5 | 802 | ret); |
f0fba2ad LG |
803 | } |
804 | #endif | |
0b5e92c5 JC |
805 | return ret; |
806 | } | |
807 | module_init(wm8940_modinit); | |
808 | ||
809 | static void __exit wm8940_exit(void) | |
810 | { | |
f0fba2ad | 811 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
0b5e92c5 | 812 | i2c_del_driver(&wm8940_i2c_driver); |
f0fba2ad | 813 | #endif |
0b5e92c5 JC |
814 | } |
815 | module_exit(wm8940_exit); | |
816 | ||
817 | MODULE_DESCRIPTION("ASoC WM8940 driver"); | |
818 | MODULE_AUTHOR("Jonathan Cameron"); | |
819 | MODULE_LICENSE("GPL"); |