2 * wm8753.c -- WM8753 ALSA Soc Audio driver
4 * Copyright 2003 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * The WM8753 is a low power, high quality stereo codec with integrated PCM
14 * codec designed for portable digital telephony applications.
18 * This driver support 2 DAI PCM's. This makes the default PCM available for
19 * HiFi audio (e.g. MP3, ogg) playback/capture and the other PCM available for
22 * Please note that the voice PCM can be connected directly to a Bluetooth
23 * codec or GSM modem and thus cannot be read or written to, although it is
24 * available to be configured with snd_hw_params(), etc and kcontrols in the
27 * Fast DAI switching:-
29 * The driver can now fast switch between the DAI configurations via a
30 * an alsa kcontrol. This allows the PCM to remain open.
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/kernel.h>
37 #include <linux/init.h>
38 #include <linux/delay.h>
40 #include <linux/i2c.h>
41 #include <linux/platform_device.h>
42 #include <linux/spi/spi.h>
43 #include <sound/core.h>
44 #include <sound/pcm.h>
45 #include <sound/pcm_params.h>
46 #include <sound/soc.h>
47 #include <sound/soc-dapm.h>
48 #include <sound/initval.h>
49 #include <sound/tlv.h>
50 #include <asm/div64.h>
54 static int caps_charge = 2000;
55 module_param(caps_charge, int, 0);
56 MODULE_PARM_DESC(caps_charge, "WM8753 cap charge time (msecs)");
58 static void wm8753_set_dai_mode(struct snd_soc_codec *codec,
61 /* codec private data */
68 * wm8753 register cache
69 * We can't read the WM8753 register space when we
70 * are using 2 wire for device control, so we cache them instead.
72 static const u16 wm8753_reg[] = {
73 0x0008, 0x0000, 0x000a, 0x000a,
74 0x0033, 0x0000, 0x0007, 0x00ff,
75 0x00ff, 0x000f, 0x000f, 0x007b,
76 0x0000, 0x0032, 0x0000, 0x00c3,
77 0x00c3, 0x00c0, 0x0000, 0x0000,
78 0x0000, 0x0000, 0x0000, 0x0000,
79 0x0000, 0x0000, 0x0000, 0x0000,
80 0x0000, 0x0000, 0x0000, 0x0055,
81 0x0005, 0x0050, 0x0055, 0x0050,
82 0x0055, 0x0050, 0x0055, 0x0079,
83 0x0079, 0x0079, 0x0079, 0x0079,
84 0x0000, 0x0000, 0x0000, 0x0000,
85 0x0097, 0x0097, 0x0000, 0x0004,
86 0x0000, 0x0083, 0x0024, 0x01ba,
87 0x0000, 0x0083, 0x0024, 0x01ba,
92 * read wm8753 register cache
94 static inline unsigned int wm8753_read_reg_cache(struct snd_soc_codec *codec,
97 u16 *cache = codec->reg_cache;
98 if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
100 return cache[reg - 1];
104 * write wm8753 register cache
106 static inline void wm8753_write_reg_cache(struct snd_soc_codec *codec,
107 unsigned int reg, unsigned int value)
109 u16 *cache = codec->reg_cache;
110 if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
112 cache[reg - 1] = value;
116 * write to the WM8753 register space
118 static int wm8753_write(struct snd_soc_codec *codec, unsigned int reg,
124 * D15..D9 WM8753 register offset
125 * D8...D0 register data
127 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
128 data[1] = value & 0x00ff;
130 wm8753_write_reg_cache(codec, reg, value);
131 if (codec->hw_write(codec->control_data, data, 2) == 2)
137 #define wm8753_reset(c) wm8753_write(c, WM8753_RESET, 0)
142 static const char *wm8753_base[] = {"Linear Control", "Adaptive Boost"};
143 static const char *wm8753_base_filter[] =
144 {"130Hz @ 48kHz", "200Hz @ 48kHz", "100Hz @ 16kHz", "400Hz @ 48kHz",
145 "100Hz @ 8kHz", "200Hz @ 8kHz"};
146 static const char *wm8753_treble[] = {"8kHz", "4kHz"};
147 static const char *wm8753_alc_func[] = {"Off", "Right", "Left", "Stereo"};
148 static const char *wm8753_ng_type[] = {"Constant PGA Gain", "Mute ADC Output"};
149 static const char *wm8753_3d_func[] = {"Capture", "Playback"};
150 static const char *wm8753_3d_uc[] = {"2.2kHz", "1.5kHz"};
151 static const char *wm8753_3d_lc[] = {"200Hz", "500Hz"};
152 static const char *wm8753_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz"};
153 static const char *wm8753_mono_mix[] = {"Stereo", "Left", "Right", "Mono"};
154 static const char *wm8753_dac_phase[] = {"Non Inverted", "Inverted"};
155 static const char *wm8753_line_mix[] = {"Line 1 + 2", "Line 1 - 2",
157 static const char *wm8753_mono_mux[] = {"Line Mix", "Rx Mix"};
158 static const char *wm8753_right_mux[] = {"Line 2", "Rx Mix"};
159 static const char *wm8753_left_mux[] = {"Line 1", "Rx Mix"};
160 static const char *wm8753_rxmsel[] = {"RXP - RXN", "RXP + RXN", "RXP", "RXN"};
161 static const char *wm8753_sidetone_mux[] = {"Left PGA", "Mic 1", "Mic 2",
163 static const char *wm8753_mono2_src[] = {"Inverted Mono 1", "Left", "Right",
165 static const char *wm8753_out3[] = {"VREF", "ROUT2", "Left + Right"};
166 static const char *wm8753_out4[] = {"VREF", "Capture ST", "LOUT2"};
167 static const char *wm8753_radcsel[] = {"PGA", "Line or RXP-RXN", "Sidetone"};
168 static const char *wm8753_ladcsel[] = {"PGA", "Line or RXP-RXN", "Line"};
169 static const char *wm8753_mono_adc[] = {"Stereo", "Analogue Mix Left",
170 "Analogue Mix Right", "Digital Mono Mix"};
171 static const char *wm8753_adc_hp[] = {"3.4Hz @ 48kHz", "82Hz @ 16k",
172 "82Hz @ 8kHz", "170Hz @ 8kHz"};
173 static const char *wm8753_adc_filter[] = {"HiFi", "Voice"};
174 static const char *wm8753_mic_sel[] = {"Mic 1", "Mic 2", "Mic 3"};
175 static const char *wm8753_dai_mode[] = {"DAI 0", "DAI 1", "DAI 2", "DAI 3"};
176 static const char *wm8753_dat_sel[] = {"Stereo", "Left ADC", "Right ADC",
178 static const char *wm8753_rout2_phase[] = {"Non Inverted", "Inverted"};
180 static const struct soc_enum wm8753_enum[] = {
181 SOC_ENUM_SINGLE(WM8753_BASS, 7, 2, wm8753_base),
182 SOC_ENUM_SINGLE(WM8753_BASS, 4, 6, wm8753_base_filter),
183 SOC_ENUM_SINGLE(WM8753_TREBLE, 6, 2, wm8753_treble),
184 SOC_ENUM_SINGLE(WM8753_ALC1, 7, 4, wm8753_alc_func),
185 SOC_ENUM_SINGLE(WM8753_NGATE, 1, 2, wm8753_ng_type),
186 SOC_ENUM_SINGLE(WM8753_3D, 7, 2, wm8753_3d_func),
187 SOC_ENUM_SINGLE(WM8753_3D, 6, 2, wm8753_3d_uc),
188 SOC_ENUM_SINGLE(WM8753_3D, 5, 2, wm8753_3d_lc),
189 SOC_ENUM_SINGLE(WM8753_DAC, 1, 4, wm8753_deemp),
190 SOC_ENUM_SINGLE(WM8753_DAC, 4, 4, wm8753_mono_mix),
191 SOC_ENUM_SINGLE(WM8753_DAC, 6, 2, wm8753_dac_phase),
192 SOC_ENUM_SINGLE(WM8753_INCTL1, 3, 4, wm8753_line_mix),
193 SOC_ENUM_SINGLE(WM8753_INCTL1, 2, 2, wm8753_mono_mux),
194 SOC_ENUM_SINGLE(WM8753_INCTL1, 1, 2, wm8753_right_mux),
195 SOC_ENUM_SINGLE(WM8753_INCTL1, 0, 2, wm8753_left_mux),
196 SOC_ENUM_SINGLE(WM8753_INCTL2, 6, 4, wm8753_rxmsel),
197 SOC_ENUM_SINGLE(WM8753_INCTL2, 4, 4, wm8753_sidetone_mux),
198 SOC_ENUM_SINGLE(WM8753_OUTCTL, 7, 4, wm8753_mono2_src),
199 SOC_ENUM_SINGLE(WM8753_OUTCTL, 0, 3, wm8753_out3),
200 SOC_ENUM_SINGLE(WM8753_ADCTL2, 7, 3, wm8753_out4),
201 SOC_ENUM_SINGLE(WM8753_ADCIN, 2, 3, wm8753_radcsel),
202 SOC_ENUM_SINGLE(WM8753_ADCIN, 0, 3, wm8753_ladcsel),
203 SOC_ENUM_SINGLE(WM8753_ADCIN, 4, 4, wm8753_mono_adc),
204 SOC_ENUM_SINGLE(WM8753_ADC, 2, 4, wm8753_adc_hp),
205 SOC_ENUM_SINGLE(WM8753_ADC, 4, 2, wm8753_adc_filter),
206 SOC_ENUM_SINGLE(WM8753_MICBIAS, 6, 3, wm8753_mic_sel),
207 SOC_ENUM_SINGLE(WM8753_IOCTL, 2, 4, wm8753_dai_mode),
208 SOC_ENUM_SINGLE(WM8753_ADC, 7, 4, wm8753_dat_sel),
209 SOC_ENUM_SINGLE(WM8753_OUTCTL, 2, 2, wm8753_rout2_phase),
213 static int wm8753_get_dai(struct snd_kcontrol *kcontrol,
214 struct snd_ctl_elem_value *ucontrol)
216 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
217 int mode = wm8753_read_reg_cache(codec, WM8753_IOCTL);
219 ucontrol->value.integer.value[0] = (mode & 0xc) >> 2;
223 static int wm8753_set_dai(struct snd_kcontrol *kcontrol,
224 struct snd_ctl_elem_value *ucontrol)
226 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
227 int mode = wm8753_read_reg_cache(codec, WM8753_IOCTL);
229 if (((mode & 0xc) >> 2) == ucontrol->value.integer.value[0])
233 mode |= (ucontrol->value.integer.value[0] << 2);
235 wm8753_write(codec, WM8753_IOCTL, mode);
236 wm8753_set_dai_mode(codec, ucontrol->value.integer.value[0]);
240 static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 300, 0);
241 static const DECLARE_TLV_DB_SCALE(mic_preamp_tlv, 1200, 600, 0);
242 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
243 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
244 static const unsigned int out_tlv[] = {
245 TLV_DB_RANGE_HEAD(2),
246 /* 0000000 - 0101111 = "Analogue mute" */
247 0, 48, TLV_DB_SCALE_ITEM(-25500, 0, 0),
248 48, 127, TLV_DB_SCALE_ITEM(-7300, 100, 0),
250 static const DECLARE_TLV_DB_SCALE(mix_tlv, -1500, 300, 0);
251 static const DECLARE_TLV_DB_SCALE(voice_mix_tlv, -1200, 300, 0);
252 static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
254 static const struct snd_kcontrol_new wm8753_snd_controls[] = {
255 SOC_DOUBLE_R_TLV("PCM Volume", WM8753_LDAC, WM8753_RDAC, 0, 255, 0, dac_tlv),
257 SOC_DOUBLE_R_TLV("ADC Capture Volume", WM8753_LADC, WM8753_RADC, 0, 255, 0,
260 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8753_LOUT1V, WM8753_ROUT1V,
262 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8753_LOUT2V, WM8753_ROUT2V, 0,
265 SOC_SINGLE_TLV("Mono Playback Volume", WM8753_MOUTV, 0, 127, 0, out_tlv),
267 SOC_DOUBLE_R_TLV("Bypass Playback Volume", WM8753_LOUTM1, WM8753_ROUTM1, 4, 7,
269 SOC_DOUBLE_R_TLV("Sidetone Playback Volume", WM8753_LOUTM2, WM8753_ROUTM2, 4,
271 SOC_DOUBLE_R_TLV("Voice Playback Volume", WM8753_LOUTM2, WM8753_ROUTM2, 0, 7,
274 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8753_LOUT1V, WM8753_ROUT1V, 7,
276 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8753_LOUT2V, WM8753_ROUT2V, 7,
279 SOC_SINGLE_TLV("Mono Bypass Playback Volume", WM8753_MOUTM1, 4, 7, 1, mix_tlv),
280 SOC_SINGLE_TLV("Mono Sidetone Playback Volume", WM8753_MOUTM2, 4, 7, 1,
282 SOC_SINGLE_TLV("Mono Voice Playback Volume", WM8753_MOUTM2, 0, 7, 1,
284 SOC_SINGLE("Mono Playback ZC Switch", WM8753_MOUTV, 7, 1, 0),
286 SOC_ENUM("Bass Boost", wm8753_enum[0]),
287 SOC_ENUM("Bass Filter", wm8753_enum[1]),
288 SOC_SINGLE("Bass Volume", WM8753_BASS, 0, 15, 1),
290 SOC_SINGLE("Treble Volume", WM8753_TREBLE, 0, 15, 1),
291 SOC_ENUM("Treble Cut-off", wm8753_enum[2]),
293 SOC_DOUBLE_TLV("Sidetone Capture Volume", WM8753_RECMIX1, 0, 4, 7, 1,
295 SOC_SINGLE_TLV("Voice Sidetone Capture Volume", WM8753_RECMIX2, 0, 7, 1,
298 SOC_DOUBLE_R_TLV("Capture Volume", WM8753_LINVOL, WM8753_RINVOL, 0, 63, 0,
300 SOC_DOUBLE_R("Capture ZC Switch", WM8753_LINVOL, WM8753_RINVOL, 6, 1, 0),
301 SOC_DOUBLE_R("Capture Switch", WM8753_LINVOL, WM8753_RINVOL, 7, 1, 1),
303 SOC_ENUM("Capture Filter Select", wm8753_enum[23]),
304 SOC_ENUM("Capture Filter Cut-off", wm8753_enum[24]),
305 SOC_SINGLE("Capture Filter Switch", WM8753_ADC, 0, 1, 1),
307 SOC_SINGLE("ALC Capture Target Volume", WM8753_ALC1, 0, 7, 0),
308 SOC_SINGLE("ALC Capture Max Volume", WM8753_ALC1, 4, 7, 0),
309 SOC_ENUM("ALC Capture Function", wm8753_enum[3]),
310 SOC_SINGLE("ALC Capture ZC Switch", WM8753_ALC2, 8, 1, 0),
311 SOC_SINGLE("ALC Capture Hold Time", WM8753_ALC2, 0, 15, 1),
312 SOC_SINGLE("ALC Capture Decay Time", WM8753_ALC3, 4, 15, 1),
313 SOC_SINGLE("ALC Capture Attack Time", WM8753_ALC3, 0, 15, 0),
314 SOC_SINGLE("ALC Capture NG Threshold", WM8753_NGATE, 3, 31, 0),
315 SOC_ENUM("ALC Capture NG Type", wm8753_enum[4]),
316 SOC_SINGLE("ALC Capture NG Switch", WM8753_NGATE, 0, 1, 0),
318 SOC_ENUM("3D Function", wm8753_enum[5]),
319 SOC_ENUM("3D Upper Cut-off", wm8753_enum[6]),
320 SOC_ENUM("3D Lower Cut-off", wm8753_enum[7]),
321 SOC_SINGLE("3D Volume", WM8753_3D, 1, 15, 0),
322 SOC_SINGLE("3D Switch", WM8753_3D, 0, 1, 0),
324 SOC_SINGLE("Capture 6dB Attenuate", WM8753_ADCTL1, 2, 1, 0),
325 SOC_SINGLE("Playback 6dB Attenuate", WM8753_ADCTL1, 1, 1, 0),
327 SOC_ENUM("De-emphasis", wm8753_enum[8]),
328 SOC_ENUM("Playback Mono Mix", wm8753_enum[9]),
329 SOC_ENUM("Playback Phase", wm8753_enum[10]),
331 SOC_SINGLE_TLV("Mic2 Capture Volume", WM8753_INCTL1, 7, 3, 0, mic_preamp_tlv),
332 SOC_SINGLE_TLV("Mic1 Capture Volume", WM8753_INCTL1, 5, 3, 0, mic_preamp_tlv),
334 SOC_ENUM_EXT("DAI Mode", wm8753_enum[26], wm8753_get_dai, wm8753_set_dai),
336 SOC_ENUM("ADC Data Select", wm8753_enum[27]),
337 SOC_ENUM("ROUT2 Phase", wm8753_enum[28]),
345 static const struct snd_kcontrol_new wm8753_left_mixer_controls[] = {
346 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_LOUTM2, 8, 1, 0),
347 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_LOUTM2, 7, 1, 0),
348 SOC_DAPM_SINGLE("Left Playback Switch", WM8753_LOUTM1, 8, 1, 0),
349 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_LOUTM1, 7, 1, 0),
353 static const struct snd_kcontrol_new wm8753_right_mixer_controls[] = {
354 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_ROUTM2, 8, 1, 0),
355 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_ROUTM2, 7, 1, 0),
356 SOC_DAPM_SINGLE("Right Playback Switch", WM8753_ROUTM1, 8, 1, 0),
357 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_ROUTM1, 7, 1, 0),
361 static const struct snd_kcontrol_new wm8753_mono_mixer_controls[] = {
362 SOC_DAPM_SINGLE("Left Playback Switch", WM8753_MOUTM1, 8, 1, 0),
363 SOC_DAPM_SINGLE("Right Playback Switch", WM8753_MOUTM2, 8, 1, 0),
364 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_MOUTM2, 3, 1, 0),
365 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_MOUTM2, 7, 1, 0),
366 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_MOUTM1, 7, 1, 0),
370 static const struct snd_kcontrol_new wm8753_mono2_controls =
371 SOC_DAPM_ENUM("Route", wm8753_enum[17]);
374 static const struct snd_kcontrol_new wm8753_out3_controls =
375 SOC_DAPM_ENUM("Route", wm8753_enum[18]);
378 static const struct snd_kcontrol_new wm8753_out4_controls =
379 SOC_DAPM_ENUM("Route", wm8753_enum[19]);
382 static const struct snd_kcontrol_new wm8753_adc_mono_controls =
383 SOC_DAPM_ENUM("Route", wm8753_enum[22]);
386 static const struct snd_kcontrol_new wm8753_record_mixer_controls[] = {
387 SOC_DAPM_SINGLE("Voice Capture Switch", WM8753_RECMIX2, 3, 1, 0),
388 SOC_DAPM_SINGLE("Left Capture Switch", WM8753_RECMIX1, 3, 1, 0),
389 SOC_DAPM_SINGLE("Right Capture Switch", WM8753_RECMIX1, 7, 1, 0),
393 static const struct snd_kcontrol_new wm8753_adc_left_controls =
394 SOC_DAPM_ENUM("Route", wm8753_enum[21]);
397 static const struct snd_kcontrol_new wm8753_adc_right_controls =
398 SOC_DAPM_ENUM("Route", wm8753_enum[20]);
401 static const struct snd_kcontrol_new wm8753_mic_mux_controls =
402 SOC_DAPM_ENUM("Route", wm8753_enum[16]);
405 static const struct snd_kcontrol_new wm8753_alc_mixer_controls[] = {
406 SOC_DAPM_SINGLE("Line Capture Switch", WM8753_INCTL2, 3, 1, 0),
407 SOC_DAPM_SINGLE("Mic2 Capture Switch", WM8753_INCTL2, 2, 1, 0),
408 SOC_DAPM_SINGLE("Mic1 Capture Switch", WM8753_INCTL2, 1, 1, 0),
409 SOC_DAPM_SINGLE("Rx Capture Switch", WM8753_INCTL2, 0, 1, 0),
413 static const struct snd_kcontrol_new wm8753_line_left_controls =
414 SOC_DAPM_ENUM("Route", wm8753_enum[14]);
417 static const struct snd_kcontrol_new wm8753_line_right_controls =
418 SOC_DAPM_ENUM("Route", wm8753_enum[13]);
421 static const struct snd_kcontrol_new wm8753_line_mono_controls =
422 SOC_DAPM_ENUM("Route", wm8753_enum[12]);
424 /* Line mux and mixer */
425 static const struct snd_kcontrol_new wm8753_line_mux_mix_controls =
426 SOC_DAPM_ENUM("Route", wm8753_enum[11]);
428 /* Rx mux and mixer */
429 static const struct snd_kcontrol_new wm8753_rx_mux_mix_controls =
430 SOC_DAPM_ENUM("Route", wm8753_enum[15]);
432 /* Mic Selector Mux */
433 static const struct snd_kcontrol_new wm8753_mic_sel_mux_controls =
434 SOC_DAPM_ENUM("Route", wm8753_enum[25]);
436 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
437 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8753_PWR1, 5, 0),
438 SND_SOC_DAPM_MIXER("Left Mixer", WM8753_PWR4, 0, 0,
439 &wm8753_left_mixer_controls[0], ARRAY_SIZE(wm8753_left_mixer_controls)),
440 SND_SOC_DAPM_PGA("Left Out 1", WM8753_PWR3, 8, 0, NULL, 0),
441 SND_SOC_DAPM_PGA("Left Out 2", WM8753_PWR3, 6, 0, NULL, 0),
442 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", WM8753_PWR1, 3, 0),
443 SND_SOC_DAPM_OUTPUT("LOUT1"),
444 SND_SOC_DAPM_OUTPUT("LOUT2"),
445 SND_SOC_DAPM_MIXER("Right Mixer", WM8753_PWR4, 1, 0,
446 &wm8753_right_mixer_controls[0], ARRAY_SIZE(wm8753_right_mixer_controls)),
447 SND_SOC_DAPM_PGA("Right Out 1", WM8753_PWR3, 7, 0, NULL, 0),
448 SND_SOC_DAPM_PGA("Right Out 2", WM8753_PWR3, 5, 0, NULL, 0),
449 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", WM8753_PWR1, 2, 0),
450 SND_SOC_DAPM_OUTPUT("ROUT1"),
451 SND_SOC_DAPM_OUTPUT("ROUT2"),
452 SND_SOC_DAPM_MIXER("Mono Mixer", WM8753_PWR4, 2, 0,
453 &wm8753_mono_mixer_controls[0], ARRAY_SIZE(wm8753_mono_mixer_controls)),
454 SND_SOC_DAPM_PGA("Mono Out 1", WM8753_PWR3, 2, 0, NULL, 0),
455 SND_SOC_DAPM_PGA("Mono Out 2", WM8753_PWR3, 1, 0, NULL, 0),
456 SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", WM8753_PWR1, 4, 0),
457 SND_SOC_DAPM_OUTPUT("MONO1"),
458 SND_SOC_DAPM_MUX("Mono 2 Mux", SND_SOC_NOPM, 0, 0, &wm8753_mono2_controls),
459 SND_SOC_DAPM_OUTPUT("MONO2"),
460 SND_SOC_DAPM_MIXER("Out3 Left + Right", -1, 0, 0, NULL, 0),
461 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8753_out3_controls),
462 SND_SOC_DAPM_PGA("Out 3", WM8753_PWR3, 4, 0, NULL, 0),
463 SND_SOC_DAPM_OUTPUT("OUT3"),
464 SND_SOC_DAPM_MUX("Out4 Mux", SND_SOC_NOPM, 0, 0, &wm8753_out4_controls),
465 SND_SOC_DAPM_PGA("Out 4", WM8753_PWR3, 3, 0, NULL, 0),
466 SND_SOC_DAPM_OUTPUT("OUT4"),
467 SND_SOC_DAPM_MIXER("Playback Mixer", WM8753_PWR4, 3, 0,
468 &wm8753_record_mixer_controls[0],
469 ARRAY_SIZE(wm8753_record_mixer_controls)),
470 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8753_PWR2, 3, 0),
471 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8753_PWR2, 2, 0),
472 SND_SOC_DAPM_MUX("Capture Left Mixer", SND_SOC_NOPM, 0, 0,
473 &wm8753_adc_mono_controls),
474 SND_SOC_DAPM_MUX("Capture Right Mixer", SND_SOC_NOPM, 0, 0,
475 &wm8753_adc_mono_controls),
476 SND_SOC_DAPM_MUX("Capture Left Mux", SND_SOC_NOPM, 0, 0,
477 &wm8753_adc_left_controls),
478 SND_SOC_DAPM_MUX("Capture Right Mux", SND_SOC_NOPM, 0, 0,
479 &wm8753_adc_right_controls),
480 SND_SOC_DAPM_MUX("Mic Sidetone Mux", SND_SOC_NOPM, 0, 0,
481 &wm8753_mic_mux_controls),
482 SND_SOC_DAPM_PGA("Left Capture Volume", WM8753_PWR2, 5, 0, NULL, 0),
483 SND_SOC_DAPM_PGA("Right Capture Volume", WM8753_PWR2, 4, 0, NULL, 0),
484 SND_SOC_DAPM_MIXER("ALC Mixer", WM8753_PWR2, 6, 0,
485 &wm8753_alc_mixer_controls[0], ARRAY_SIZE(wm8753_alc_mixer_controls)),
486 SND_SOC_DAPM_MUX("Line Left Mux", SND_SOC_NOPM, 0, 0,
487 &wm8753_line_left_controls),
488 SND_SOC_DAPM_MUX("Line Right Mux", SND_SOC_NOPM, 0, 0,
489 &wm8753_line_right_controls),
490 SND_SOC_DAPM_MUX("Line Mono Mux", SND_SOC_NOPM, 0, 0,
491 &wm8753_line_mono_controls),
492 SND_SOC_DAPM_MUX("Line Mixer", WM8753_PWR2, 0, 0,
493 &wm8753_line_mux_mix_controls),
494 SND_SOC_DAPM_MUX("Rx Mixer", WM8753_PWR2, 1, 0,
495 &wm8753_rx_mux_mix_controls),
496 SND_SOC_DAPM_PGA("Mic 1 Volume", WM8753_PWR2, 8, 0, NULL, 0),
497 SND_SOC_DAPM_PGA("Mic 2 Volume", WM8753_PWR2, 7, 0, NULL, 0),
498 SND_SOC_DAPM_MUX("Mic Selection Mux", SND_SOC_NOPM, 0, 0,
499 &wm8753_mic_sel_mux_controls),
500 SND_SOC_DAPM_INPUT("LINE1"),
501 SND_SOC_DAPM_INPUT("LINE2"),
502 SND_SOC_DAPM_INPUT("RXP"),
503 SND_SOC_DAPM_INPUT("RXN"),
504 SND_SOC_DAPM_INPUT("ACIN"),
505 SND_SOC_DAPM_OUTPUT("ACOP"),
506 SND_SOC_DAPM_INPUT("MIC1N"),
507 SND_SOC_DAPM_INPUT("MIC1"),
508 SND_SOC_DAPM_INPUT("MIC2N"),
509 SND_SOC_DAPM_INPUT("MIC2"),
510 SND_SOC_DAPM_VMID("VREF"),
513 static const struct snd_soc_dapm_route audio_map[] = {
515 {"Left Mixer", "Left Playback Switch", "Left DAC"},
516 {"Left Mixer", "Voice Playback Switch", "Voice DAC"},
517 {"Left Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
518 {"Left Mixer", "Bypass Playback Switch", "Line Left Mux"},
521 {"Right Mixer", "Right Playback Switch", "Right DAC"},
522 {"Right Mixer", "Voice Playback Switch", "Voice DAC"},
523 {"Right Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
524 {"Right Mixer", "Bypass Playback Switch", "Line Right Mux"},
527 {"Mono Mixer", "Voice Playback Switch", "Voice DAC"},
528 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
529 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
530 {"Mono Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
531 {"Mono Mixer", "Bypass Playback Switch", "Line Mono Mux"},
534 {"Left Out 1", NULL, "Left Mixer"},
535 {"Left Out 2", NULL, "Left Mixer"},
536 {"LOUT1", NULL, "Left Out 1"},
537 {"LOUT2", NULL, "Left Out 2"},
540 {"Right Out 1", NULL, "Right Mixer"},
541 {"Right Out 2", NULL, "Right Mixer"},
542 {"ROUT1", NULL, "Right Out 1"},
543 {"ROUT2", NULL, "Right Out 2"},
546 {"Mono Out 1", NULL, "Mono Mixer"},
547 {"MONO1", NULL, "Mono Out 1"},
550 {"Mono 2 Mux", "Left + Right", "Out3 Left + Right"},
551 {"Mono 2 Mux", "Inverted Mono 1", "MONO1"},
552 {"Mono 2 Mux", "Left", "Left Mixer"},
553 {"Mono 2 Mux", "Right", "Right Mixer"},
554 {"Mono Out 2", NULL, "Mono 2 Mux"},
555 {"MONO2", NULL, "Mono Out 2"},
558 {"Out3 Left + Right", NULL, "Left Mixer"},
559 {"Out3 Left + Right", NULL, "Right Mixer"},
560 {"Out3 Mux", "VREF", "VREF"},
561 {"Out3 Mux", "Left + Right", "Out3 Left + Right"},
562 {"Out3 Mux", "ROUT2", "ROUT2"},
563 {"Out 3", NULL, "Out3 Mux"},
564 {"OUT3", NULL, "Out 3"},
567 {"Out4 Mux", "VREF", "VREF"},
568 {"Out4 Mux", "Capture ST", "Playback Mixer"},
569 {"Out4 Mux", "LOUT2", "LOUT2"},
570 {"Out 4", NULL, "Out4 Mux"},
571 {"OUT4", NULL, "Out 4"},
574 {"Playback Mixer", "Left Capture Switch", "Left Mixer"},
575 {"Playback Mixer", "Voice Capture Switch", "Mono Mixer"},
576 {"Playback Mixer", "Right Capture Switch", "Right Mixer"},
578 /* Mic/SideTone Mux */
579 {"Mic Sidetone Mux", "Left PGA", "Left Capture Volume"},
580 {"Mic Sidetone Mux", "Right PGA", "Right Capture Volume"},
581 {"Mic Sidetone Mux", "Mic 1", "Mic 1 Volume"},
582 {"Mic Sidetone Mux", "Mic 2", "Mic 2 Volume"},
584 /* Capture Left Mux */
585 {"Capture Left Mux", "PGA", "Left Capture Volume"},
586 {"Capture Left Mux", "Line or RXP-RXN", "Line Left Mux"},
587 {"Capture Left Mux", "Line", "LINE1"},
589 /* Capture Right Mux */
590 {"Capture Right Mux", "PGA", "Right Capture Volume"},
591 {"Capture Right Mux", "Line or RXP-RXN", "Line Right Mux"},
592 {"Capture Right Mux", "Sidetone", "Playback Mixer"},
594 /* Mono Capture mixer-mux */
595 {"Capture Right Mixer", "Stereo", "Capture Right Mux"},
596 {"Capture Left Mixer", "Analogue Mix Left", "Capture Left Mux"},
597 {"Capture Left Mixer", "Analogue Mix Left", "Capture Right Mux"},
598 {"Capture Right Mixer", "Analogue Mix Right", "Capture Left Mux"},
599 {"Capture Right Mixer", "Analogue Mix Right", "Capture Right Mux"},
600 {"Capture Left Mixer", "Digital Mono Mix", "Capture Left Mux"},
601 {"Capture Left Mixer", "Digital Mono Mix", "Capture Right Mux"},
602 {"Capture Right Mixer", "Digital Mono Mix", "Capture Left Mux"},
603 {"Capture Right Mixer", "Digital Mono Mix", "Capture Right Mux"},
606 {"Left ADC", NULL, "Capture Left Mixer"},
607 {"Right ADC", NULL, "Capture Right Mixer"},
609 /* Left Capture Volume */
610 {"Left Capture Volume", NULL, "ACIN"},
612 /* Right Capture Volume */
613 {"Right Capture Volume", NULL, "Mic 2 Volume"},
616 {"ALC Mixer", "Line Capture Switch", "Line Mixer"},
617 {"ALC Mixer", "Mic2 Capture Switch", "Mic 2 Volume"},
618 {"ALC Mixer", "Mic1 Capture Switch", "Mic 1 Volume"},
619 {"ALC Mixer", "Rx Capture Switch", "Rx Mixer"},
622 {"Line Left Mux", "Line 1", "LINE1"},
623 {"Line Left Mux", "Rx Mix", "Rx Mixer"},
626 {"Line Right Mux", "Line 2", "LINE2"},
627 {"Line Right Mux", "Rx Mix", "Rx Mixer"},
630 {"Line Mono Mux", "Line Mix", "Line Mixer"},
631 {"Line Mono Mux", "Rx Mix", "Rx Mixer"},
634 {"Line Mixer", "Line 1 + 2", "LINE1"},
635 {"Line Mixer", "Line 1 - 2", "LINE1"},
636 {"Line Mixer", "Line 1 + 2", "LINE2"},
637 {"Line Mixer", "Line 1 - 2", "LINE2"},
638 {"Line Mixer", "Line 1", "LINE1"},
639 {"Line Mixer", "Line 2", "LINE2"},
642 {"Rx Mixer", "RXP - RXN", "RXP"},
643 {"Rx Mixer", "RXP + RXN", "RXP"},
644 {"Rx Mixer", "RXP - RXN", "RXN"},
645 {"Rx Mixer", "RXP + RXN", "RXN"},
646 {"Rx Mixer", "RXP", "RXP"},
647 {"Rx Mixer", "RXN", "RXN"},
650 {"Mic 1 Volume", NULL, "MIC1N"},
651 {"Mic 1 Volume", NULL, "Mic Selection Mux"},
654 {"Mic 2 Volume", NULL, "MIC2N"},
655 {"Mic 2 Volume", NULL, "MIC2"},
657 /* Mic Selector Mux */
658 {"Mic Selection Mux", "Mic 1", "MIC1"},
659 {"Mic Selection Mux", "Mic 2", "MIC2N"},
660 {"Mic Selection Mux", "Mic 3", "MIC2"},
663 {"ACOP", NULL, "ALC Mixer"},
666 static int wm8753_add_widgets(struct snd_soc_codec *codec)
668 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
669 ARRAY_SIZE(wm8753_dapm_widgets));
671 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
673 snd_soc_dapm_new_widgets(codec);
684 /* The size in bits of the pll divide multiplied by 10
685 * to allow rounding later */
686 #define FIXED_PLL_SIZE ((1 << 22) * 10)
688 static void pll_factors(struct _pll_div *pll_div, unsigned int target,
692 unsigned int K, Ndiv, Nmod;
694 Ndiv = target / source;
698 Ndiv = target / source;
702 if ((Ndiv < 6) || (Ndiv > 12))
704 "wm8753: unsupported N = %d\n", Ndiv);
707 Nmod = target % source;
708 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
710 do_div(Kpart, source);
712 K = Kpart & 0xFFFFFFFF;
714 /* Check if we need to round */
718 /* Move down to proper range now rounding is done */
724 static int wm8753_set_dai_pll(struct snd_soc_dai *codec_dai,
725 int pll_id, unsigned int freq_in, unsigned int freq_out)
729 struct snd_soc_codec *codec = codec_dai->codec;
731 if (pll_id < WM8753_PLL1 || pll_id > WM8753_PLL2)
734 if (pll_id == WM8753_PLL1) {
737 reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xffef;
741 reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfff7;
744 if (!freq_in || !freq_out) {
746 wm8753_write(codec, WM8753_PLL1CTL1 + offset, 0x0026);
747 wm8753_write(codec, WM8753_CLOCK, reg);
751 struct _pll_div pll_div;
753 pll_factors(&pll_div, freq_out * 8, freq_in);
755 /* set up N and K PLL divisor ratios */
756 /* bits 8:5 = PLL_N, bits 3:0 = PLL_K[21:18] */
757 value = (pll_div.n << 5) + ((pll_div.k & 0x3c0000) >> 18);
758 wm8753_write(codec, WM8753_PLL1CTL2 + offset, value);
760 /* bits 8:0 = PLL_K[17:9] */
761 value = (pll_div.k & 0x03fe00) >> 9;
762 wm8753_write(codec, WM8753_PLL1CTL3 + offset, value);
764 /* bits 8:0 = PLL_K[8:0] */
765 value = pll_div.k & 0x0001ff;
766 wm8753_write(codec, WM8753_PLL1CTL4 + offset, value);
768 /* set PLL as input and enable */
769 wm8753_write(codec, WM8753_PLL1CTL1 + offset, 0x0027 |
770 (pll_div.div2 << 3));
771 wm8753_write(codec, WM8753_CLOCK, reg | enable);
783 /* codec hifi mclk (after PLL) clock divider coefficients */
784 static const struct _coeff_div coeff_div[] = {
786 {12288000, 8000, 0x6, 0x0},
787 {11289600, 8000, 0x16, 0x0},
788 {18432000, 8000, 0x7, 0x0},
789 {16934400, 8000, 0x17, 0x0},
790 {12000000, 8000, 0x6, 0x1},
793 {11289600, 11025, 0x18, 0x0},
794 {16934400, 11025, 0x19, 0x0},
795 {12000000, 11025, 0x19, 0x1},
798 {12288000, 16000, 0xa, 0x0},
799 {18432000, 16000, 0xb, 0x0},
800 {12000000, 16000, 0xa, 0x1},
803 {11289600, 22050, 0x1a, 0x0},
804 {16934400, 22050, 0x1b, 0x0},
805 {12000000, 22050, 0x1b, 0x1},
808 {12288000, 32000, 0xc, 0x0},
809 {18432000, 32000, 0xd, 0x0},
810 {12000000, 32000, 0xa, 0x1},
813 {11289600, 44100, 0x10, 0x0},
814 {16934400, 44100, 0x11, 0x0},
815 {12000000, 44100, 0x11, 0x1},
818 {12288000, 48000, 0x0, 0x0},
819 {18432000, 48000, 0x1, 0x0},
820 {12000000, 48000, 0x0, 0x1},
823 {11289600, 88200, 0x1e, 0x0},
824 {16934400, 88200, 0x1f, 0x0},
825 {12000000, 88200, 0x1f, 0x1},
828 {12288000, 96000, 0xe, 0x0},
829 {18432000, 96000, 0xf, 0x0},
830 {12000000, 96000, 0xe, 0x1},
833 static int get_coeff(int mclk, int rate)
837 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
838 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
845 * Clock after PLL and dividers
847 static int wm8753_set_dai_sysclk(struct snd_soc_dai *codec_dai,
848 int clk_id, unsigned int freq, int dir)
850 struct snd_soc_codec *codec = codec_dai->codec;
851 struct wm8753_priv *wm8753 = codec->private_data;
859 if (clk_id == WM8753_MCLK) {
860 wm8753->sysclk = freq;
862 } else if (clk_id == WM8753_PCMCLK) {
863 wm8753->pcmclk = freq;
872 * Set's ADC and Voice DAC format.
874 static int wm8753_vdac_adc_set_dai_fmt(struct snd_soc_dai *codec_dai,
877 struct snd_soc_codec *codec = codec_dai->codec;
878 u16 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x01ec;
880 /* interface format */
881 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
882 case SND_SOC_DAIFMT_I2S:
885 case SND_SOC_DAIFMT_RIGHT_J:
887 case SND_SOC_DAIFMT_LEFT_J:
890 case SND_SOC_DAIFMT_DSP_A:
893 case SND_SOC_DAIFMT_DSP_B:
900 wm8753_write(codec, WM8753_PCM, voice);
905 * Set PCM DAI bit size and sample rate.
907 static int wm8753_pcm_hw_params(struct snd_pcm_substream *substream,
908 struct snd_pcm_hw_params *params,
909 struct snd_soc_dai *dai)
911 struct snd_soc_pcm_runtime *rtd = substream->private_data;
912 struct snd_soc_device *socdev = rtd->socdev;
913 struct snd_soc_codec *codec = socdev->card->codec;
914 struct wm8753_priv *wm8753 = codec->private_data;
915 u16 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x01f3;
916 u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x017f;
919 switch (params_format(params)) {
920 case SNDRV_PCM_FORMAT_S16_LE:
922 case SNDRV_PCM_FORMAT_S20_3LE:
925 case SNDRV_PCM_FORMAT_S24_LE:
928 case SNDRV_PCM_FORMAT_S32_LE:
934 if (params_rate(params) * 384 == wm8753->pcmclk)
936 wm8753_write(codec, WM8753_SRATE1, srate);
938 wm8753_write(codec, WM8753_PCM, voice);
943 * Set's PCM dai fmt and BCLK.
945 static int wm8753_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
948 struct snd_soc_codec *codec = codec_dai->codec;
951 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x011f;
952 ioctl = wm8753_read_reg_cache(codec, WM8753_IOCTL) & 0x015d;
954 /* set master/slave audio interface */
955 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
956 case SND_SOC_DAIFMT_CBS_CFS:
958 case SND_SOC_DAIFMT_CBM_CFM:
960 case SND_SOC_DAIFMT_CBM_CFS:
967 /* clock inversion */
968 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
969 case SND_SOC_DAIFMT_DSP_A:
970 case SND_SOC_DAIFMT_DSP_B:
971 /* frame inversion not valid for DSP modes */
972 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
973 case SND_SOC_DAIFMT_NB_NF:
975 case SND_SOC_DAIFMT_IB_NF:
982 case SND_SOC_DAIFMT_I2S:
983 case SND_SOC_DAIFMT_RIGHT_J:
984 case SND_SOC_DAIFMT_LEFT_J:
986 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
987 case SND_SOC_DAIFMT_NB_NF:
989 case SND_SOC_DAIFMT_IB_IF:
992 case SND_SOC_DAIFMT_IB_NF:
995 case SND_SOC_DAIFMT_NB_IF:
1006 wm8753_write(codec, WM8753_PCM, voice);
1007 wm8753_write(codec, WM8753_IOCTL, ioctl);
1011 static int wm8753_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
1012 int div_id, int div)
1014 struct snd_soc_codec *codec = codec_dai->codec;
1019 reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0x003f;
1020 wm8753_write(codec, WM8753_CLOCK, reg | div);
1022 case WM8753_BCLKDIV:
1023 reg = wm8753_read_reg_cache(codec, WM8753_SRATE2) & 0x01c7;
1024 wm8753_write(codec, WM8753_SRATE2, reg | div);
1026 case WM8753_VXCLKDIV:
1027 reg = wm8753_read_reg_cache(codec, WM8753_SRATE2) & 0x003f;
1028 wm8753_write(codec, WM8753_SRATE2, reg | div);
1037 * Set's HiFi DAC format.
1039 static int wm8753_hdac_set_dai_fmt(struct snd_soc_dai *codec_dai,
1042 struct snd_soc_codec *codec = codec_dai->codec;
1043 u16 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x01e0;
1045 /* interface format */
1046 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1047 case SND_SOC_DAIFMT_I2S:
1050 case SND_SOC_DAIFMT_RIGHT_J:
1052 case SND_SOC_DAIFMT_LEFT_J:
1055 case SND_SOC_DAIFMT_DSP_A:
1058 case SND_SOC_DAIFMT_DSP_B:
1065 wm8753_write(codec, WM8753_HIFI, hifi);
1070 * Set's I2S DAI format.
1072 static int wm8753_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
1075 struct snd_soc_codec *codec = codec_dai->codec;
1078 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x011f;
1079 ioctl = wm8753_read_reg_cache(codec, WM8753_IOCTL) & 0x00ae;
1081 /* set master/slave audio interface */
1082 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1083 case SND_SOC_DAIFMT_CBS_CFS:
1085 case SND_SOC_DAIFMT_CBM_CFM:
1087 case SND_SOC_DAIFMT_CBM_CFS:
1094 /* clock inversion */
1095 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1096 case SND_SOC_DAIFMT_DSP_A:
1097 case SND_SOC_DAIFMT_DSP_B:
1098 /* frame inversion not valid for DSP modes */
1099 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1100 case SND_SOC_DAIFMT_NB_NF:
1102 case SND_SOC_DAIFMT_IB_NF:
1109 case SND_SOC_DAIFMT_I2S:
1110 case SND_SOC_DAIFMT_RIGHT_J:
1111 case SND_SOC_DAIFMT_LEFT_J:
1113 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1114 case SND_SOC_DAIFMT_NB_NF:
1116 case SND_SOC_DAIFMT_IB_IF:
1119 case SND_SOC_DAIFMT_IB_NF:
1122 case SND_SOC_DAIFMT_NB_IF:
1133 wm8753_write(codec, WM8753_HIFI, hifi);
1134 wm8753_write(codec, WM8753_IOCTL, ioctl);
1139 * Set PCM DAI bit size and sample rate.
1141 static int wm8753_i2s_hw_params(struct snd_pcm_substream *substream,
1142 struct snd_pcm_hw_params *params,
1143 struct snd_soc_dai *dai)
1145 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1146 struct snd_soc_device *socdev = rtd->socdev;
1147 struct snd_soc_codec *codec = socdev->card->codec;
1148 struct wm8753_priv *wm8753 = codec->private_data;
1149 u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x01c0;
1150 u16 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x01f3;
1153 /* is digital filter coefficient valid ? */
1154 coeff = get_coeff(wm8753->sysclk, params_rate(params));
1156 printk(KERN_ERR "wm8753 invalid MCLK or rate\n");
1159 wm8753_write(codec, WM8753_SRATE1, srate | (coeff_div[coeff].sr << 1) |
1160 coeff_div[coeff].usb);
1163 switch (params_format(params)) {
1164 case SNDRV_PCM_FORMAT_S16_LE:
1166 case SNDRV_PCM_FORMAT_S20_3LE:
1169 case SNDRV_PCM_FORMAT_S24_LE:
1172 case SNDRV_PCM_FORMAT_S32_LE:
1177 wm8753_write(codec, WM8753_HIFI, hifi);
1181 static int wm8753_mode1v_set_dai_fmt(struct snd_soc_dai *codec_dai,
1184 struct snd_soc_codec *codec = codec_dai->codec;
1187 /* set clk source as pcmclk */
1188 clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
1189 wm8753_write(codec, WM8753_CLOCK, clock);
1191 if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
1193 return wm8753_pcm_set_dai_fmt(codec_dai, fmt);
1196 static int wm8753_mode1h_set_dai_fmt(struct snd_soc_dai *codec_dai,
1199 if (wm8753_hdac_set_dai_fmt(codec_dai, fmt) < 0)
1201 return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
1204 static int wm8753_mode2_set_dai_fmt(struct snd_soc_dai *codec_dai,
1207 struct snd_soc_codec *codec = codec_dai->codec;
1210 /* set clk source as pcmclk */
1211 clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
1212 wm8753_write(codec, WM8753_CLOCK, clock);
1214 if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
1216 return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
1219 static int wm8753_mode3_4_set_dai_fmt(struct snd_soc_dai *codec_dai,
1222 struct snd_soc_codec *codec = codec_dai->codec;
1225 /* set clk source as mclk */
1226 clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
1227 wm8753_write(codec, WM8753_CLOCK, clock | 0x4);
1229 if (wm8753_hdac_set_dai_fmt(codec_dai, fmt) < 0)
1231 if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
1233 return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
1236 static int wm8753_mute(struct snd_soc_dai *dai, int mute)
1238 struct snd_soc_codec *codec = dai->codec;
1239 u16 mute_reg = wm8753_read_reg_cache(codec, WM8753_DAC) & 0xfff7;
1241 /* the digital mute covers the HiFi and Voice DAC's on the WM8753.
1242 * make sure we check if they are not both active when we mute */
1243 if (mute && dai->id == 1) {
1244 if (!wm8753_dai[WM8753_DAI_VOICE].playback.active ||
1245 !wm8753_dai[WM8753_DAI_HIFI].playback.active)
1246 wm8753_write(codec, WM8753_DAC, mute_reg | 0x8);
1249 wm8753_write(codec, WM8753_DAC, mute_reg | 0x8);
1251 wm8753_write(codec, WM8753_DAC, mute_reg);
1257 static int wm8753_set_bias_level(struct snd_soc_codec *codec,
1258 enum snd_soc_bias_level level)
1260 u16 pwr_reg = wm8753_read_reg_cache(codec, WM8753_PWR1) & 0xfe3e;
1263 case SND_SOC_BIAS_ON:
1264 /* set vmid to 50k and unmute dac */
1265 wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x00c0);
1267 case SND_SOC_BIAS_PREPARE:
1268 /* set vmid to 5k for quick power up */
1269 wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x01c1);
1271 case SND_SOC_BIAS_STANDBY:
1272 /* mute dac and set vmid to 500k, enable VREF */
1273 wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x0141);
1275 case SND_SOC_BIAS_OFF:
1276 wm8753_write(codec, WM8753_PWR1, 0x0001);
1279 codec->bias_level = level;
1283 #define WM8753_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
1284 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
1285 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
1286 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
1288 #define WM8753_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
1289 SNDRV_PCM_FMTBIT_S24_LE)
1292 * The WM8753 supports upto 4 different and mutually exclusive DAI
1293 * configurations. This gives 2 PCM's available for use, hifi and voice.
1294 * NOTE: The Voice PCM cannot play or capture audio to the CPU as it's DAI
1295 * is connected between the wm8753 and a BT codec or GSM modem.
1297 * 1. Voice over PCM DAI - HIFI DAC over HIFI DAI
1298 * 2. Voice over HIFI DAI - HIFI disabled
1299 * 3. Voice disabled - HIFI over HIFI
1300 * 4. Voice disabled - HIFI over HIFI, uses voice DAI LRC for capture
1302 static const struct snd_soc_dai wm8753_all_dai[] = {
1303 /* DAI HiFi mode 1 */
1304 { .name = "WM8753 HiFi",
1307 .stream_name = "HiFi Playback",
1310 .rates = WM8753_RATES,
1311 .formats = WM8753_FORMATS},
1312 .capture = { /* dummy for fast DAI switching */
1313 .stream_name = "Capture",
1316 .rates = WM8753_RATES,
1317 .formats = WM8753_FORMATS},
1319 .hw_params = wm8753_i2s_hw_params,
1320 .digital_mute = wm8753_mute,
1321 .set_fmt = wm8753_mode1h_set_dai_fmt,
1322 .set_clkdiv = wm8753_set_dai_clkdiv,
1323 .set_pll = wm8753_set_dai_pll,
1324 .set_sysclk = wm8753_set_dai_sysclk,
1327 /* DAI Voice mode 1 */
1328 { .name = "WM8753 Voice",
1331 .stream_name = "Voice Playback",
1334 .rates = WM8753_RATES,
1335 .formats = WM8753_FORMATS,},
1337 .stream_name = "Capture",
1340 .rates = WM8753_RATES,
1341 .formats = WM8753_FORMATS,},
1343 .hw_params = wm8753_pcm_hw_params,
1344 .digital_mute = wm8753_mute,
1345 .set_fmt = wm8753_mode1v_set_dai_fmt,
1346 .set_clkdiv = wm8753_set_dai_clkdiv,
1347 .set_pll = wm8753_set_dai_pll,
1348 .set_sysclk = wm8753_set_dai_sysclk,
1351 /* DAI HiFi mode 2 - dummy */
1352 { .name = "WM8753 HiFi",
1355 /* DAI Voice mode 2 */
1356 { .name = "WM8753 Voice",
1359 .stream_name = "Voice Playback",
1362 .rates = WM8753_RATES,
1363 .formats = WM8753_FORMATS,},
1365 .stream_name = "Capture",
1368 .rates = WM8753_RATES,
1369 .formats = WM8753_FORMATS,},
1371 .hw_params = wm8753_pcm_hw_params,
1372 .digital_mute = wm8753_mute,
1373 .set_fmt = wm8753_mode2_set_dai_fmt,
1374 .set_clkdiv = wm8753_set_dai_clkdiv,
1375 .set_pll = wm8753_set_dai_pll,
1376 .set_sysclk = wm8753_set_dai_sysclk,
1379 /* DAI HiFi mode 3 */
1380 { .name = "WM8753 HiFi",
1383 .stream_name = "HiFi Playback",
1386 .rates = WM8753_RATES,
1387 .formats = WM8753_FORMATS,},
1389 .stream_name = "Capture",
1392 .rates = WM8753_RATES,
1393 .formats = WM8753_FORMATS,},
1395 .hw_params = wm8753_i2s_hw_params,
1396 .digital_mute = wm8753_mute,
1397 .set_fmt = wm8753_mode3_4_set_dai_fmt,
1398 .set_clkdiv = wm8753_set_dai_clkdiv,
1399 .set_pll = wm8753_set_dai_pll,
1400 .set_sysclk = wm8753_set_dai_sysclk,
1403 /* DAI Voice mode 3 - dummy */
1404 { .name = "WM8753 Voice",
1407 /* DAI HiFi mode 4 */
1408 { .name = "WM8753 HiFi",
1411 .stream_name = "HiFi Playback",
1414 .rates = WM8753_RATES,
1415 .formats = WM8753_FORMATS,},
1417 .stream_name = "Capture",
1420 .rates = WM8753_RATES,
1421 .formats = WM8753_FORMATS,},
1423 .hw_params = wm8753_i2s_hw_params,
1424 .digital_mute = wm8753_mute,
1425 .set_fmt = wm8753_mode3_4_set_dai_fmt,
1426 .set_clkdiv = wm8753_set_dai_clkdiv,
1427 .set_pll = wm8753_set_dai_pll,
1428 .set_sysclk = wm8753_set_dai_sysclk,
1431 /* DAI Voice mode 4 - dummy */
1432 { .name = "WM8753 Voice",
1437 struct snd_soc_dai wm8753_dai[] = {
1439 .name = "WM8753 DAI 0",
1442 .name = "WM8753 DAI 1",
1445 EXPORT_SYMBOL_GPL(wm8753_dai);
1447 static void wm8753_set_dai_mode(struct snd_soc_codec *codec, unsigned int mode)
1450 int playback_active, capture_active, codec_active, pop_wait;
1452 struct list_head list;
1454 playback_active = wm8753_dai[0].playback.active;
1455 capture_active = wm8753_dai[0].capture.active;
1456 codec_active = wm8753_dai[0].active;
1457 private_data = wm8753_dai[0].private_data;
1458 pop_wait = wm8753_dai[0].pop_wait;
1459 list = wm8753_dai[0].list;
1460 wm8753_dai[0] = wm8753_all_dai[mode << 1];
1461 wm8753_dai[0].playback.active = playback_active;
1462 wm8753_dai[0].capture.active = capture_active;
1463 wm8753_dai[0].active = codec_active;
1464 wm8753_dai[0].private_data = private_data;
1465 wm8753_dai[0].pop_wait = pop_wait;
1466 wm8753_dai[0].list = list;
1468 playback_active = wm8753_dai[1].playback.active;
1469 capture_active = wm8753_dai[1].capture.active;
1470 codec_active = wm8753_dai[1].active;
1471 private_data = wm8753_dai[1].private_data;
1472 pop_wait = wm8753_dai[1].pop_wait;
1473 list = wm8753_dai[1].list;
1474 wm8753_dai[1] = wm8753_all_dai[(mode << 1) + 1];
1475 wm8753_dai[1].playback.active = playback_active;
1476 wm8753_dai[1].capture.active = capture_active;
1477 wm8753_dai[1].active = codec_active;
1478 wm8753_dai[1].private_data = private_data;
1479 wm8753_dai[1].pop_wait = pop_wait;
1480 wm8753_dai[1].list = list;
1482 wm8753_dai[0].codec = codec;
1483 wm8753_dai[1].codec = codec;
1486 static void wm8753_work(struct work_struct *work)
1488 struct snd_soc_codec *codec =
1489 container_of(work, struct snd_soc_codec, delayed_work.work);
1490 wm8753_set_bias_level(codec, codec->bias_level);
1493 static int wm8753_suspend(struct platform_device *pdev, pm_message_t state)
1495 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1496 struct snd_soc_codec *codec = socdev->card->codec;
1498 /* we only need to suspend if we are a valid card */
1502 wm8753_set_bias_level(codec, SND_SOC_BIAS_OFF);
1506 static int wm8753_resume(struct platform_device *pdev)
1508 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1509 struct snd_soc_codec *codec = socdev->card->codec;
1512 u16 *cache = codec->reg_cache;
1514 /* we only need to resume if we are a valid card */
1518 /* Sync reg_cache with the hardware */
1519 for (i = 0; i < ARRAY_SIZE(wm8753_reg); i++) {
1520 if (i + 1 == WM8753_RESET)
1522 data[0] = ((i + 1) << 1) | ((cache[i] >> 8) & 0x0001);
1523 data[1] = cache[i] & 0x00ff;
1524 codec->hw_write(codec->control_data, data, 2);
1527 wm8753_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1529 /* charge wm8753 caps */
1530 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
1531 wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
1532 codec->bias_level = SND_SOC_BIAS_ON;
1533 schedule_delayed_work(&codec->delayed_work,
1534 msecs_to_jiffies(caps_charge));
1541 * initialise the WM8753 driver
1542 * register the mixer and dsp interfaces with the kernel
1544 static int wm8753_init(struct snd_soc_device *socdev)
1546 struct snd_soc_codec *codec = socdev->card->codec;
1549 codec->name = "WM8753";
1550 codec->owner = THIS_MODULE;
1551 codec->read = wm8753_read_reg_cache;
1552 codec->write = wm8753_write;
1553 codec->set_bias_level = wm8753_set_bias_level;
1554 codec->dai = wm8753_dai;
1556 codec->reg_cache_size = ARRAY_SIZE(wm8753_reg);
1557 codec->reg_cache = kmemdup(wm8753_reg, sizeof(wm8753_reg), GFP_KERNEL);
1559 if (codec->reg_cache == NULL)
1562 wm8753_set_dai_mode(codec, 0);
1564 wm8753_reset(codec);
1567 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1569 printk(KERN_ERR "wm8753: failed to create pcms\n");
1573 /* charge output caps */
1574 wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
1575 codec->bias_level = SND_SOC_BIAS_STANDBY;
1576 schedule_delayed_work(&codec->delayed_work,
1577 msecs_to_jiffies(caps_charge));
1579 /* set the update bits */
1580 reg = wm8753_read_reg_cache(codec, WM8753_LDAC);
1581 wm8753_write(codec, WM8753_LDAC, reg | 0x0100);
1582 reg = wm8753_read_reg_cache(codec, WM8753_RDAC);
1583 wm8753_write(codec, WM8753_RDAC, reg | 0x0100);
1584 reg = wm8753_read_reg_cache(codec, WM8753_LADC);
1585 wm8753_write(codec, WM8753_LADC, reg | 0x0100);
1586 reg = wm8753_read_reg_cache(codec, WM8753_RADC);
1587 wm8753_write(codec, WM8753_RADC, reg | 0x0100);
1588 reg = wm8753_read_reg_cache(codec, WM8753_LOUT1V);
1589 wm8753_write(codec, WM8753_LOUT1V, reg | 0x0100);
1590 reg = wm8753_read_reg_cache(codec, WM8753_ROUT1V);
1591 wm8753_write(codec, WM8753_ROUT1V, reg | 0x0100);
1592 reg = wm8753_read_reg_cache(codec, WM8753_LOUT2V);
1593 wm8753_write(codec, WM8753_LOUT2V, reg | 0x0100);
1594 reg = wm8753_read_reg_cache(codec, WM8753_ROUT2V);
1595 wm8753_write(codec, WM8753_ROUT2V, reg | 0x0100);
1596 reg = wm8753_read_reg_cache(codec, WM8753_LINVOL);
1597 wm8753_write(codec, WM8753_LINVOL, reg | 0x0100);
1598 reg = wm8753_read_reg_cache(codec, WM8753_RINVOL);
1599 wm8753_write(codec, WM8753_RINVOL, reg | 0x0100);
1601 snd_soc_add_controls(codec, wm8753_snd_controls,
1602 ARRAY_SIZE(wm8753_snd_controls));
1603 wm8753_add_widgets(codec);
1604 ret = snd_soc_init_card(socdev);
1606 printk(KERN_ERR "wm8753: failed to register card\n");
1613 snd_soc_free_pcms(socdev);
1614 snd_soc_dapm_free(socdev);
1616 kfree(codec->reg_cache);
1620 /* If the i2c layer weren't so broken, we could pass this kind of data
1622 static struct snd_soc_device *wm8753_socdev;
1624 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1627 * WM8753 2 wire address is determined by GPIO5
1628 * state during powerup.
1633 static int wm8753_i2c_probe(struct i2c_client *i2c,
1634 const struct i2c_device_id *id)
1636 struct snd_soc_device *socdev = wm8753_socdev;
1637 struct snd_soc_codec *codec = socdev->card->codec;
1640 i2c_set_clientdata(i2c, codec);
1641 codec->control_data = i2c;
1643 ret = wm8753_init(socdev);
1645 pr_err("failed to initialise WM8753\n");
1650 static int wm8753_i2c_remove(struct i2c_client *client)
1652 struct snd_soc_codec *codec = i2c_get_clientdata(client);
1653 kfree(codec->reg_cache);
1657 static const struct i2c_device_id wm8753_i2c_id[] = {
1661 MODULE_DEVICE_TABLE(i2c, wm8753_i2c_id);
1663 static struct i2c_driver wm8753_i2c_driver = {
1665 .name = "WM8753 I2C Codec",
1666 .owner = THIS_MODULE,
1668 .probe = wm8753_i2c_probe,
1669 .remove = wm8753_i2c_remove,
1670 .id_table = wm8753_i2c_id,
1673 static int wm8753_add_i2c_device(struct platform_device *pdev,
1674 const struct wm8753_setup_data *setup)
1676 struct i2c_board_info info;
1677 struct i2c_adapter *adapter;
1678 struct i2c_client *client;
1681 ret = i2c_add_driver(&wm8753_i2c_driver);
1683 dev_err(&pdev->dev, "can't add i2c driver\n");
1687 memset(&info, 0, sizeof(struct i2c_board_info));
1688 info.addr = setup->i2c_address;
1689 strlcpy(info.type, "wm8753", I2C_NAME_SIZE);
1691 adapter = i2c_get_adapter(setup->i2c_bus);
1693 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
1698 client = i2c_new_device(adapter, &info);
1699 i2c_put_adapter(adapter);
1701 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
1702 (unsigned int)info.addr);
1709 i2c_del_driver(&wm8753_i2c_driver);
1714 #if defined(CONFIG_SPI_MASTER)
1715 static int __devinit wm8753_spi_probe(struct spi_device *spi)
1717 struct snd_soc_device *socdev = wm8753_socdev;
1718 struct snd_soc_codec *codec = socdev->card->codec;
1721 codec->control_data = spi;
1723 ret = wm8753_init(socdev);
1725 dev_err(&spi->dev, "failed to initialise WM8753\n");
1730 static int __devexit wm8753_spi_remove(struct spi_device *spi)
1735 static struct spi_driver wm8753_spi_driver = {
1738 .bus = &spi_bus_type,
1739 .owner = THIS_MODULE,
1741 .probe = wm8753_spi_probe,
1742 .remove = __devexit_p(wm8753_spi_remove),
1745 static int wm8753_spi_write(struct spi_device *spi, const char *data, int len)
1747 struct spi_transfer t;
1748 struct spi_message m;
1757 spi_message_init(&m);
1758 memset(&t, 0, (sizeof t));
1763 spi_message_add_tail(&t, &m);
1771 static int wm8753_probe(struct platform_device *pdev)
1773 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1774 struct wm8753_setup_data *setup;
1775 struct snd_soc_codec *codec;
1776 struct wm8753_priv *wm8753;
1779 setup = socdev->codec_data;
1780 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
1784 wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
1785 if (wm8753 == NULL) {
1790 codec->private_data = wm8753;
1791 socdev->card->codec = codec;
1792 mutex_init(&codec->mutex);
1793 INIT_LIST_HEAD(&codec->dapm_widgets);
1794 INIT_LIST_HEAD(&codec->dapm_paths);
1795 wm8753_socdev = socdev;
1796 INIT_DELAYED_WORK(&codec->delayed_work, wm8753_work);
1798 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1799 if (setup->i2c_address) {
1800 codec->hw_write = (hw_write_t)i2c_master_send;
1801 ret = wm8753_add_i2c_device(pdev, setup);
1804 #if defined(CONFIG_SPI_MASTER)
1806 codec->hw_write = (hw_write_t)wm8753_spi_write;
1807 ret = spi_register_driver(&wm8753_spi_driver);
1809 printk(KERN_ERR "can't add spi driver");
1814 kfree(codec->private_data);
1821 * This function forces any delayed work to be queued and run.
1823 static int run_delayed_work(struct delayed_work *dwork)
1827 /* cancel any work waiting to be queued. */
1828 ret = cancel_delayed_work(dwork);
1830 /* if there was any work waiting then we run it now and
1831 * wait for it's completion */
1833 schedule_delayed_work(dwork, 0);
1834 flush_scheduled_work();
1839 /* power down chip */
1840 static int wm8753_remove(struct platform_device *pdev)
1842 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1843 struct snd_soc_codec *codec = socdev->card->codec;
1845 if (codec->control_data)
1846 wm8753_set_bias_level(codec, SND_SOC_BIAS_OFF);
1847 run_delayed_work(&codec->delayed_work);
1848 snd_soc_free_pcms(socdev);
1849 snd_soc_dapm_free(socdev);
1850 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1851 i2c_unregister_device(codec->control_data);
1852 i2c_del_driver(&wm8753_i2c_driver);
1854 #if defined(CONFIG_SPI_MASTER)
1855 spi_unregister_driver(&wm8753_spi_driver);
1857 kfree(codec->private_data);
1863 struct snd_soc_codec_device soc_codec_dev_wm8753 = {
1864 .probe = wm8753_probe,
1865 .remove = wm8753_remove,
1866 .suspend = wm8753_suspend,
1867 .resume = wm8753_resume,
1869 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8753);
1871 static int __init wm8753_modinit(void)
1873 return snd_soc_register_dais(wm8753_dai, ARRAY_SIZE(wm8753_dai));
1875 module_init(wm8753_modinit);
1877 static void __exit wm8753_exit(void)
1879 snd_soc_unregister_dais(wm8753_dai, ARRAY_SIZE(wm8753_dai));
1881 module_exit(wm8753_exit);
1883 MODULE_DESCRIPTION("ASoC WM8753 driver");
1884 MODULE_AUTHOR("Liam Girdwood");
1885 MODULE_LICENSE("GPL");