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TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/wm9090.c

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  1 /*
  2  * ALSA SoC WM9090 driver
  3  *
  4  * Copyright 2009-12 Wolfson Microelectronics
  5  *
  6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  7  *
  8  * This program is free software; you can redistribute it and/or
  9  * modify it under the terms of the GNU General Public License
 10  * version 2 as published by the Free Software Foundation.
 11  *
 12  * This program is distributed in the hope that it will be useful, but
 13  * WITHOUT ANY WARRANTY; without even the implied warranty of
 14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 15  * General Public License for more details.
 16  *
 17  * You should have received a copy of the GNU General Public License
 18  * along with this program; if not, write to the Free Software
 19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 20  * 02110-1301 USA
 21  */
 22 
 23 #include <linux/module.h>
 24 #include <linux/errno.h>
 25 #include <linux/device.h>
 26 #include <linux/i2c.h>
 27 #include <linux/delay.h>
 28 #include <linux/regmap.h>
 29 #include <linux/slab.h>
 30 #include <sound/initval.h>
 31 #include <sound/soc.h>
 32 #include <sound/tlv.h>
 33 #include <sound/wm9090.h>
 34 
 35 #include "wm9090.h"
 36 
 37 static const struct reg_default wm9090_reg_defaults[] = {
 38         { 1,  0x0006 },     /* R1   - Power Management (1) */
 39         { 2,  0x6000 },     /* R2   - Power Management (2) */
 40         { 3,  0x0000 },     /* R3   - Power Management (3) */
 41         { 6,  0x01C0 },     /* R6   - Clocking 1 */
 42         { 22, 0x0003 },     /* R22  - IN1 Line Control */
 43         { 23, 0x0003 },     /* R23  - IN2 Line Control */
 44         { 24, 0x0083 },     /* R24  - IN1 Line Input A Volume */
 45         { 25, 0x0083 },     /* R25  - IN1  Line Input B Volume */
 46         { 26, 0x0083 },     /* R26  - IN2 Line Input A Volume */
 47         { 27, 0x0083 },     /* R27  - IN2 Line Input B Volume */
 48         { 28, 0x002D },     /* R28  - Left Output Volume */
 49         { 29, 0x002D },     /* R29  - Right Output Volume */
 50         { 34, 0x0100 },     /* R34  - SPKMIXL Attenuation */
 51         { 35, 0x0010 },     /* R36  - SPKOUT Mixers */
 52         { 37, 0x0140 },     /* R37  - ClassD3 */
 53         { 38, 0x0039 },     /* R38  - Speaker Volume Left */
 54         { 45, 0x0000 },     /* R45  - Output Mixer1 */
 55         { 46, 0x0000 },     /* R46  - Output Mixer2 */
 56         { 47, 0x0100 },     /* R47  - Output Mixer3 */
 57         { 48, 0x0100 },     /* R48  - Output Mixer4 */
 58         { 54, 0x0000 },     /* R54  - Speaker Mixer */
 59         { 57, 0x000D },     /* R57  - AntiPOP2 */
 60         { 70, 0x0000 },     /* R70  - Write Sequencer 0 */
 61         { 71, 0x0000 },     /* R71  - Write Sequencer 1 */
 62         { 72, 0x0000 },     /* R72  - Write Sequencer 2 */
 63         { 73, 0x0000 },     /* R73  - Write Sequencer 3 */
 64         { 74, 0x0000 },     /* R74  - Write Sequencer 4 */
 65         { 75, 0x0000 },     /* R75  - Write Sequencer 5 */
 66         { 76, 0x1F25 },     /* R76  - Charge Pump 1 */
 67         { 85, 0x054A },     /* R85  - DC Servo 1 */
 68         { 87, 0x0000 },     /* R87  - DC Servo 3 */
 69         { 96, 0x0100 },     /* R96  - Analogue HP 0 */
 70         { 98, 0x8640 },     /* R98  - AGC Control 0 */
 71         { 99, 0xC000 },     /* R99  - AGC Control 1 */
 72         { 100, 0x0200 },     /* R100 - AGC Control 2 */
 73 };
 74 
 75 /* This struct is used to save the context */
 76 struct wm9090_priv {
 77         struct wm9090_platform_data pdata;
 78         struct regmap *regmap;
 79 };
 80 
 81 static bool wm9090_volatile(struct device *dev, unsigned int reg)
 82 {
 83         switch (reg) {
 84         case WM9090_SOFTWARE_RESET:
 85         case WM9090_DC_SERVO_0:
 86         case WM9090_DC_SERVO_READBACK_0:
 87         case WM9090_DC_SERVO_READBACK_1:
 88         case WM9090_DC_SERVO_READBACK_2:
 89                 return true;
 90 
 91         default:
 92                 return false;
 93         }
 94 }
 95 
 96 static bool wm9090_readable(struct device *dev, unsigned int reg)
 97 {
 98         switch (reg) {
 99         case WM9090_SOFTWARE_RESET:
100         case WM9090_POWER_MANAGEMENT_1:
101         case WM9090_POWER_MANAGEMENT_2:
102         case WM9090_POWER_MANAGEMENT_3:
103         case WM9090_CLOCKING_1:
104         case WM9090_IN1_LINE_CONTROL:
105         case WM9090_IN2_LINE_CONTROL:
106         case WM9090_IN1_LINE_INPUT_A_VOLUME:
107         case WM9090_IN1_LINE_INPUT_B_VOLUME:
108         case WM9090_IN2_LINE_INPUT_A_VOLUME:
109         case WM9090_IN2_LINE_INPUT_B_VOLUME:
110         case WM9090_LEFT_OUTPUT_VOLUME:
111         case WM9090_RIGHT_OUTPUT_VOLUME:
112         case WM9090_SPKMIXL_ATTENUATION:
113         case WM9090_SPKOUT_MIXERS:
114         case WM9090_CLASSD3:
115         case WM9090_SPEAKER_VOLUME_LEFT:
116         case WM9090_OUTPUT_MIXER1:
117         case WM9090_OUTPUT_MIXER2:
118         case WM9090_OUTPUT_MIXER3:
119         case WM9090_OUTPUT_MIXER4:
120         case WM9090_SPEAKER_MIXER:
121         case WM9090_ANTIPOP2:
122         case WM9090_WRITE_SEQUENCER_0:
123         case WM9090_WRITE_SEQUENCER_1:
124         case WM9090_WRITE_SEQUENCER_2:
125         case WM9090_WRITE_SEQUENCER_3:
126         case WM9090_WRITE_SEQUENCER_4:
127         case WM9090_WRITE_SEQUENCER_5:
128         case WM9090_CHARGE_PUMP_1:
129         case WM9090_DC_SERVO_0:
130         case WM9090_DC_SERVO_1:
131         case WM9090_DC_SERVO_3:
132         case WM9090_DC_SERVO_READBACK_0:
133         case WM9090_DC_SERVO_READBACK_1:
134         case WM9090_DC_SERVO_READBACK_2:
135         case WM9090_ANALOGUE_HP_0:
136         case WM9090_AGC_CONTROL_0:
137         case WM9090_AGC_CONTROL_1:
138         case WM9090_AGC_CONTROL_2:
139                 return true;
140 
141         default:
142                 return false;
143         }
144 }
145 
146 static void wait_for_dc_servo(struct snd_soc_codec *codec)
147 {
148         unsigned int reg;
149         int count = 0;
150 
151         dev_dbg(codec->dev, "Waiting for DC servo...\n");
152         do {
153                 count++;
154                 msleep(1);
155                 reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);
156                 dev_dbg(codec->dev, "DC servo status: %x\n", reg);
157         } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
158                  != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);
159 
160         if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
161             != WM9090_DCS_CAL_COMPLETE_MASK)
162                 dev_err(codec->dev, "Timed out waiting for DC Servo\n");
163 }
164 
165 static const unsigned int in_tlv[] = {
166         TLV_DB_RANGE_HEAD(3),
167         0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
168         1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
169         4, 6, TLV_DB_SCALE_ITEM(600, 600, 0),
170 };
171 static const unsigned int mix_tlv[] = {
172         TLV_DB_RANGE_HEAD(2),
173         0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
174         3, 3, TLV_DB_SCALE_ITEM(0, 0, 0),
175 };
176 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
177 static const unsigned int spkboost_tlv[] = {
178         TLV_DB_RANGE_HEAD(2),
179         0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
180         7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0),
181 };
182 
183 static const struct snd_kcontrol_new wm9090_controls[] = {
184 SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
185                in_tlv),
186 SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
187 SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
188 
189 SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
190                in_tlv),
191 SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
192 SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
193 
194 SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
195 SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
196                mix_tlv),
197 SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
198                mix_tlv),
199 
200 SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
201 SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
202                mix_tlv),
203 SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
204                mix_tlv),
205 
206 SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
207 SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
208                mix_tlv),
209 SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
210                mix_tlv),
211 
212 SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
213                  WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
214 SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
215              WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
216 SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
217              WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
218 
219 SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
220                out_tlv),
221 SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
222 SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
223 SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
224 };
225 
226 static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
227 SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
228                in_tlv),
229 SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
230 SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
231 
232 SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
233                mix_tlv),
234 SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
235                mix_tlv),
236 SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
237                mix_tlv),
238 };
239 
240 static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
241 SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
242                in_tlv),
243 SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
244 SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
245 
246 SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
247                mix_tlv),
248 SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
249                mix_tlv),
250 SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
251                mix_tlv),
252 };
253 
254 static int hp_ev(struct snd_soc_dapm_widget *w,
255                  struct snd_kcontrol *kcontrol, int event)
256 {
257         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
258         unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0);
259 
260         switch (event) {
261         case SND_SOC_DAPM_POST_PMU:
262                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
263                                     WM9090_CP_ENA, WM9090_CP_ENA);
264 
265                 msleep(5);
266 
267                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
268                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
269                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
270 
271                 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
272                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
273 
274                 /* Start the DC servo.  We don't currently use the
275                  * ability to save the state since we don't have full
276                  * control of the analogue paths and they can change
277                  * DC offsets; see the WM8904 driver for an example of
278                  * doing so.
279                  */
280                 snd_soc_write(codec, WM9090_DC_SERVO_0,
281                               WM9090_DCS_ENA_CHAN_0 |
282                               WM9090_DCS_ENA_CHAN_1 |
283                               WM9090_DCS_TRIG_STARTUP_1 |
284                               WM9090_DCS_TRIG_STARTUP_0);
285                 wait_for_dc_servo(codec);
286 
287                 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
288                         WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
289                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
290                 break;
291 
292         case SND_SOC_DAPM_PRE_PMD:
293                 reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
294                          WM9090_HPOUT1L_DLY |
295                          WM9090_HPOUT1L_OUTP |
296                          WM9090_HPOUT1R_RMV_SHORT |
297                          WM9090_HPOUT1R_DLY |
298                          WM9090_HPOUT1R_OUTP);
299 
300                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
301 
302                 snd_soc_write(codec, WM9090_DC_SERVO_0, 0);
303 
304                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
305                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
306                                     0);
307 
308                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
309                                     WM9090_CP_ENA, 0);
310                 break;
311         }
312 
313         return 0;
314 }
315 
316 static const struct snd_kcontrol_new spkmix[] = {
317 SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
318 SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
319 SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
320 SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
321 };
322 
323 static const struct snd_kcontrol_new spkout[] = {
324 SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
325 };
326 
327 static const struct snd_kcontrol_new mixoutl[] = {
328 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
329 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
330 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
331 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
332 };
333 
334 static const struct snd_kcontrol_new mixoutr[] = {
335 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
336 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
337 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
338 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
339 };
340 
341 static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
342 SND_SOC_DAPM_INPUT("IN1+"),
343 SND_SOC_DAPM_INPUT("IN1-"),
344 SND_SOC_DAPM_INPUT("IN2+"),
345 SND_SOC_DAPM_INPUT("IN2-"),
346 
347 SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
348 
349 SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
350 SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
351 SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
352 SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
353 
354 SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
355                    spkmix, ARRAY_SIZE(spkmix)),
356 SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
357                    mixoutl, ARRAY_SIZE(mixoutl)),
358 SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
359                    mixoutr, ARRAY_SIZE(mixoutr)),
360 
361 SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
362                    hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
363 
364 SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
365 SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
366                    spkout, ARRAY_SIZE(spkout)),
367 
368 SND_SOC_DAPM_OUTPUT("HPR"),
369 SND_SOC_DAPM_OUTPUT("HPL"),
370 SND_SOC_DAPM_OUTPUT("Speaker"),
371 };
372 
373 static const struct snd_soc_dapm_route audio_map[] = {
374         { "IN1A PGA", NULL, "IN1+" },
375         { "IN2A PGA", NULL, "IN2+" },
376 
377         { "SPKMIX", "IN1A Switch", "IN1A PGA" },
378         { "SPKMIX", "IN2A Switch", "IN2A PGA" },
379 
380         { "MIXOUTL", "IN1A Switch", "IN1A PGA" },
381         { "MIXOUTL", "IN2A Switch", "IN2A PGA" },
382 
383         { "MIXOUTR", "IN1A Switch", "IN1A PGA" },
384         { "MIXOUTR", "IN2A Switch", "IN2A PGA" },
385 
386         { "HP PGA", NULL, "OSC" },
387         { "HP PGA", NULL, "MIXOUTL" },
388         { "HP PGA", NULL, "MIXOUTR" },
389 
390         { "HPL", NULL, "HP PGA" },
391         { "HPR", NULL, "HP PGA" },
392 
393         { "SPKPGA", NULL, "OSC" },
394         { "SPKPGA", NULL, "SPKMIX" },
395 
396         { "SPKOUT", "Mixer Switch", "SPKPGA" },
397 
398         { "Speaker", NULL, "SPKOUT" },
399 };
400 
401 static const struct snd_soc_dapm_route audio_map_in1_se[] = {
402         { "IN1B PGA", NULL, "IN1-" },   
403 
404         { "SPKMIX", "IN1B Switch", "IN1B PGA" },
405         { "MIXOUTL", "IN1B Switch", "IN1B PGA" },
406         { "MIXOUTR", "IN1B Switch", "IN1B PGA" },
407 };
408 
409 static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
410         { "IN1A PGA", NULL, "IN1-" },   
411 };
412 
413 static const struct snd_soc_dapm_route audio_map_in2_se[] = {
414         { "IN2B PGA", NULL, "IN2-" },   
415 
416         { "SPKMIX", "IN2B Switch", "IN2B PGA" },
417         { "MIXOUTL", "IN2B Switch", "IN2B PGA" },
418         { "MIXOUTR", "IN2B Switch", "IN2B PGA" },
419 };
420 
421 static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
422         { "IN2A PGA", NULL, "IN2-" },   
423 };
424 
425 static int wm9090_add_controls(struct snd_soc_codec *codec)
426 {
427         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
428         struct snd_soc_dapm_context *dapm = &codec->dapm;
429         int i;
430 
431         snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
432                                   ARRAY_SIZE(wm9090_dapm_widgets));
433 
434         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
435 
436         snd_soc_add_codec_controls(codec, wm9090_controls,
437                              ARRAY_SIZE(wm9090_controls));
438 
439         if (wm9090->pdata.lin1_diff) {
440                 snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
441                                         ARRAY_SIZE(audio_map_in1_diff));
442         } else {
443                 snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
444                                         ARRAY_SIZE(audio_map_in1_se));
445                 snd_soc_add_codec_controls(codec, wm9090_in1_se_controls,
446                                      ARRAY_SIZE(wm9090_in1_se_controls));
447         }
448 
449         if (wm9090->pdata.lin2_diff) {
450                 snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
451                                         ARRAY_SIZE(audio_map_in2_diff));
452         } else {
453                 snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
454                                         ARRAY_SIZE(audio_map_in2_se));
455                 snd_soc_add_codec_controls(codec, wm9090_in2_se_controls,
456                                      ARRAY_SIZE(wm9090_in2_se_controls));
457         }
458 
459         if (wm9090->pdata.agc_ena) {
460                 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
461                         snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i,
462                                       wm9090->pdata.agc[i]);
463                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
464                                     WM9090_AGC_ENA, WM9090_AGC_ENA);
465         } else {
466                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
467                                     WM9090_AGC_ENA, 0);
468         }
469 
470         return 0;
471 
472 }
473 
474 /*
475  * The machine driver should call this from their set_bias_level; if there
476  * isn't one then this can just be set as the set_bias_level function.
477  */
478 static int wm9090_set_bias_level(struct snd_soc_codec *codec,
479                                  enum snd_soc_bias_level level)
480 {
481         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
482 
483         switch (level) {
484         case SND_SOC_BIAS_ON:
485                 break;
486 
487         case SND_SOC_BIAS_PREPARE:
488                 snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA,
489                                     WM9090_VMID_ENA);
490                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
491                                     WM9090_BIAS_ENA |
492                                     WM9090_VMID_RES_MASK,
493                                     WM9090_BIAS_ENA |
494                                     1 << WM9090_VMID_RES_SHIFT);
495                 msleep(1);  /* Probably an overestimate */
496                 break;
497 
498         case SND_SOC_BIAS_STANDBY:
499                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
500                         /* Restore the register cache */
501                         regcache_sync(wm9090->regmap);
502                 }
503 
504                 /* We keep VMID off during standby since the combination of
505                  * ground referenced outputs and class D speaker mean that
506                  * latency is not an issue.
507                  */
508                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
509                                     WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
510                 snd_soc_update_bits(codec, WM9090_ANTIPOP2,
511                                     WM9090_VMID_ENA, 0);
512                 break;
513 
514         case SND_SOC_BIAS_OFF:
515                 break;
516         }
517 
518         codec->dapm.bias_level = level;
519 
520         return 0;
521 }
522 
523 static int wm9090_probe(struct snd_soc_codec *codec)
524 {
525         /* Configure some defaults; they will be written out when we
526          * bring the bias up.
527          */
528         snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_A_VOLUME,
529                             WM9090_IN1_VU | WM9090_IN1A_ZC,
530                             WM9090_IN1_VU | WM9090_IN1A_ZC);
531         snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_B_VOLUME,
532                             WM9090_IN1_VU | WM9090_IN1B_ZC,
533                             WM9090_IN1_VU | WM9090_IN1B_ZC);
534         snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_A_VOLUME,
535                             WM9090_IN2_VU | WM9090_IN2A_ZC,
536                             WM9090_IN2_VU | WM9090_IN2A_ZC);
537         snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_B_VOLUME,
538                             WM9090_IN2_VU | WM9090_IN2B_ZC,
539                             WM9090_IN2_VU | WM9090_IN2B_ZC);
540         snd_soc_update_bits(codec, WM9090_SPEAKER_VOLUME_LEFT,
541                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC,
542                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC);
543         snd_soc_update_bits(codec, WM9090_LEFT_OUTPUT_VOLUME,
544                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC,
545                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC);
546         snd_soc_update_bits(codec, WM9090_RIGHT_OUTPUT_VOLUME,
547                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC,
548                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC);
549 
550         snd_soc_update_bits(codec, WM9090_CLOCKING_1,
551                             WM9090_TOCLK_ENA, WM9090_TOCLK_ENA);
552 
553         wm9090_add_controls(codec);
554 
555         return 0;
556 }
557 
558 static struct snd_soc_codec_driver soc_codec_dev_wm9090 = {
559         .probe =        wm9090_probe,
560         .set_bias_level = wm9090_set_bias_level,
561         .suspend_bias_off = true,
562 };
563 
564 static const struct regmap_config wm9090_regmap = {
565         .reg_bits = 8,
566         .val_bits = 16,
567 
568         .max_register = WM9090_MAX_REGISTER,
569         .volatile_reg = wm9090_volatile,
570         .readable_reg = wm9090_readable,
571 
572         .cache_type = REGCACHE_RBTREE,
573         .reg_defaults = wm9090_reg_defaults,
574         .num_reg_defaults = ARRAY_SIZE(wm9090_reg_defaults),
575 };
576 
577 
578 static int wm9090_i2c_probe(struct i2c_client *i2c,
579                             const struct i2c_device_id *id)
580 {
581         struct wm9090_priv *wm9090;
582         unsigned int reg;
583         int ret;
584 
585         wm9090 = devm_kzalloc(&i2c->dev, sizeof(*wm9090), GFP_KERNEL);
586         if (!wm9090)
587                 return -ENOMEM;
588 
589         wm9090->regmap = devm_regmap_init_i2c(i2c, &wm9090_regmap);
590         if (IS_ERR(wm9090->regmap)) {
591                 ret = PTR_ERR(wm9090->regmap);
592                 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
593                 return ret;
594         }
595 
596         ret = regmap_read(wm9090->regmap, WM9090_SOFTWARE_RESET, &reg);
597         if (ret < 0)
598                 return ret;
599 
600         if (reg != 0x9093) {
601                 dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", reg);
602                 return -ENODEV;
603         }
604 
605         ret = regmap_write(wm9090->regmap, WM9090_SOFTWARE_RESET, 0);
606         if (ret < 0)
607                 return ret;
608 
609         if (i2c->dev.platform_data)
610                 memcpy(&wm9090->pdata, i2c->dev.platform_data,
611                        sizeof(wm9090->pdata));
612 
613         i2c_set_clientdata(i2c, wm9090);
614 
615         ret =  snd_soc_register_codec(&i2c->dev,
616                         &soc_codec_dev_wm9090,  NULL, 0);
617         if (ret != 0) {
618                 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
619                 return ret;
620         }
621 
622         return 0;
623 }
624 
625 static int wm9090_i2c_remove(struct i2c_client *i2c)
626 {
627         snd_soc_unregister_codec(&i2c->dev);
628         return 0;
629 }
630 
631 static const struct i2c_device_id wm9090_id[] = {
632         { "wm9090", 0 },
633         { "wm9093", 0 },
634         { }
635 };
636 MODULE_DEVICE_TABLE(i2c, wm9090_id);
637 
638 static struct i2c_driver wm9090_i2c_driver = {
639         .driver = {
640                 .name = "wm9090",
641                 .owner = THIS_MODULE,
642         },
643         .probe = wm9090_i2c_probe,
644         .remove = wm9090_i2c_remove,
645         .id_table = wm9090_id,
646 };
647 
648 module_i2c_driver(wm9090_i2c_driver);
649 
650 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
651 MODULE_DESCRIPTION("WM9090 ASoC driver");
652 MODULE_LICENSE("GPL");
653 

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