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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_component *component)
147 {
148         unsigned int reg;
149         int count = 0;
150 
151         dev_dbg(component->dev, "Waiting for DC servo...\n");
152         do {
153                 count++;
154                 msleep(1);
155                 reg = snd_soc_component_read32(component, WM9090_DC_SERVO_READBACK_0);
156                 dev_dbg(component->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(component->dev, "Timed out waiting for DC Servo\n");
163 }
164 
165 static const DECLARE_TLV_DB_RANGE(in_tlv,
166         0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
167         1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
168         4, 6, TLV_DB_SCALE_ITEM(600, 600, 0)
169 );
170 static const DECLARE_TLV_DB_RANGE(mix_tlv,
171         0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
172         3, 3, TLV_DB_SCALE_ITEM(0, 0, 0)
173 );
174 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
175 static const DECLARE_TLV_DB_RANGE(spkboost_tlv,
176         0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
177         7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0)
178 );
179 
180 static const struct snd_kcontrol_new wm9090_controls[] = {
181 SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
182                in_tlv),
183 SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
184 SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
185 
186 SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
187                in_tlv),
188 SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
189 SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
190 
191 SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
192 SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
193                mix_tlv),
194 SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
195                mix_tlv),
196 
197 SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
198 SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
199                mix_tlv),
200 SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
201                mix_tlv),
202 
203 SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
204 SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
205                mix_tlv),
206 SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
207                mix_tlv),
208 
209 SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
210                  WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
211 SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
212              WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
213 SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
214              WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
215 
216 SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
217                out_tlv),
218 SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
219 SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
220 SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
221 };
222 
223 static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
224 SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
225                in_tlv),
226 SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
227 SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
228 
229 SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
230                mix_tlv),
231 SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
232                mix_tlv),
233 SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
234                mix_tlv),
235 };
236 
237 static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
238 SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
239                in_tlv),
240 SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
241 SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
242 
243 SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
244                mix_tlv),
245 SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
246                mix_tlv),
247 SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
248                mix_tlv),
249 };
250 
251 static int hp_ev(struct snd_soc_dapm_widget *w,
252                  struct snd_kcontrol *kcontrol, int event)
253 {
254         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
255         unsigned int reg = snd_soc_component_read32(component, WM9090_ANALOGUE_HP_0);
256 
257         switch (event) {
258         case SND_SOC_DAPM_POST_PMU:
259                 snd_soc_component_update_bits(component, WM9090_CHARGE_PUMP_1,
260                                     WM9090_CP_ENA, WM9090_CP_ENA);
261 
262                 msleep(5);
263 
264                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
265                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
266                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
267 
268                 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
269                 snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg);
270 
271                 /* Start the DC servo.  We don't currently use the
272                  * ability to save the state since we don't have full
273                  * control of the analogue paths and they can change
274                  * DC offsets; see the WM8904 driver for an example of
275                  * doing so.
276                  */
277                 snd_soc_component_write(component, WM9090_DC_SERVO_0,
278                               WM9090_DCS_ENA_CHAN_0 |
279                               WM9090_DCS_ENA_CHAN_1 |
280                               WM9090_DCS_TRIG_STARTUP_1 |
281                               WM9090_DCS_TRIG_STARTUP_0);
282                 wait_for_dc_servo(component);
283 
284                 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
285                         WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
286                 snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg);
287                 break;
288 
289         case SND_SOC_DAPM_PRE_PMD:
290                 reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
291                          WM9090_HPOUT1L_DLY |
292                          WM9090_HPOUT1L_OUTP |
293                          WM9090_HPOUT1R_RMV_SHORT |
294                          WM9090_HPOUT1R_DLY |
295                          WM9090_HPOUT1R_OUTP);
296 
297                 snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg);
298 
299                 snd_soc_component_write(component, WM9090_DC_SERVO_0, 0);
300 
301                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
302                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
303                                     0);
304 
305                 snd_soc_component_update_bits(component, WM9090_CHARGE_PUMP_1,
306                                     WM9090_CP_ENA, 0);
307                 break;
308         }
309 
310         return 0;
311 }
312 
313 static const struct snd_kcontrol_new spkmix[] = {
314 SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
315 SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
316 SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
317 SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
318 };
319 
320 static const struct snd_kcontrol_new spkout[] = {
321 SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
322 };
323 
324 static const struct snd_kcontrol_new mixoutl[] = {
325 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
326 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
327 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
328 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
329 };
330 
331 static const struct snd_kcontrol_new mixoutr[] = {
332 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
333 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
334 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
335 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
336 };
337 
338 static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
339 SND_SOC_DAPM_INPUT("IN1+"),
340 SND_SOC_DAPM_INPUT("IN1-"),
341 SND_SOC_DAPM_INPUT("IN2+"),
342 SND_SOC_DAPM_INPUT("IN2-"),
343 
344 SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
345 
346 SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
347 SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
348 SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
349 SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
350 
351 SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
352                    spkmix, ARRAY_SIZE(spkmix)),
353 SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
354                    mixoutl, ARRAY_SIZE(mixoutl)),
355 SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
356                    mixoutr, ARRAY_SIZE(mixoutr)),
357 
358 SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
359                    hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
360 
361 SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
362 SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
363                    spkout, ARRAY_SIZE(spkout)),
364 
365 SND_SOC_DAPM_OUTPUT("HPR"),
366 SND_SOC_DAPM_OUTPUT("HPL"),
367 SND_SOC_DAPM_OUTPUT("Speaker"),
368 };
369 
370 static const struct snd_soc_dapm_route audio_map[] = {
371         { "IN1A PGA", NULL, "IN1+" },
372         { "IN2A PGA", NULL, "IN2+" },
373 
374         { "SPKMIX", "IN1A Switch", "IN1A PGA" },
375         { "SPKMIX", "IN2A Switch", "IN2A PGA" },
376 
377         { "MIXOUTL", "IN1A Switch", "IN1A PGA" },
378         { "MIXOUTL", "IN2A Switch", "IN2A PGA" },
379 
380         { "MIXOUTR", "IN1A Switch", "IN1A PGA" },
381         { "MIXOUTR", "IN2A Switch", "IN2A PGA" },
382 
383         { "HP PGA", NULL, "OSC" },
384         { "HP PGA", NULL, "MIXOUTL" },
385         { "HP PGA", NULL, "MIXOUTR" },
386 
387         { "HPL", NULL, "HP PGA" },
388         { "HPR", NULL, "HP PGA" },
389 
390         { "SPKPGA", NULL, "OSC" },
391         { "SPKPGA", NULL, "SPKMIX" },
392 
393         { "SPKOUT", "Mixer Switch", "SPKPGA" },
394 
395         { "Speaker", NULL, "SPKOUT" },
396 };
397 
398 static const struct snd_soc_dapm_route audio_map_in1_se[] = {
399         { "IN1B PGA", NULL, "IN1-" },   
400 
401         { "SPKMIX", "IN1B Switch", "IN1B PGA" },
402         { "MIXOUTL", "IN1B Switch", "IN1B PGA" },
403         { "MIXOUTR", "IN1B Switch", "IN1B PGA" },
404 };
405 
406 static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
407         { "IN1A PGA", NULL, "IN1-" },   
408 };
409 
410 static const struct snd_soc_dapm_route audio_map_in2_se[] = {
411         { "IN2B PGA", NULL, "IN2-" },   
412 
413         { "SPKMIX", "IN2B Switch", "IN2B PGA" },
414         { "MIXOUTL", "IN2B Switch", "IN2B PGA" },
415         { "MIXOUTR", "IN2B Switch", "IN2B PGA" },
416 };
417 
418 static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
419         { "IN2A PGA", NULL, "IN2-" },   
420 };
421 
422 static int wm9090_add_controls(struct snd_soc_component *component)
423 {
424         struct wm9090_priv *wm9090 = snd_soc_component_get_drvdata(component);
425         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
426         int i;
427 
428         snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
429                                   ARRAY_SIZE(wm9090_dapm_widgets));
430 
431         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
432 
433         snd_soc_add_component_controls(component, wm9090_controls,
434                              ARRAY_SIZE(wm9090_controls));
435 
436         if (wm9090->pdata.lin1_diff) {
437                 snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
438                                         ARRAY_SIZE(audio_map_in1_diff));
439         } else {
440                 snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
441                                         ARRAY_SIZE(audio_map_in1_se));
442                 snd_soc_add_component_controls(component, wm9090_in1_se_controls,
443                                      ARRAY_SIZE(wm9090_in1_se_controls));
444         }
445 
446         if (wm9090->pdata.lin2_diff) {
447                 snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
448                                         ARRAY_SIZE(audio_map_in2_diff));
449         } else {
450                 snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
451                                         ARRAY_SIZE(audio_map_in2_se));
452                 snd_soc_add_component_controls(component, wm9090_in2_se_controls,
453                                      ARRAY_SIZE(wm9090_in2_se_controls));
454         }
455 
456         if (wm9090->pdata.agc_ena) {
457                 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
458                         snd_soc_component_write(component, WM9090_AGC_CONTROL_0 + i,
459                                       wm9090->pdata.agc[i]);
460                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_3,
461                                     WM9090_AGC_ENA, WM9090_AGC_ENA);
462         } else {
463                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_3,
464                                     WM9090_AGC_ENA, 0);
465         }
466 
467         return 0;
468 
469 }
470 
471 /*
472  * The machine driver should call this from their set_bias_level; if there
473  * isn't one then this can just be set as the set_bias_level function.
474  */
475 static int wm9090_set_bias_level(struct snd_soc_component *component,
476                                  enum snd_soc_bias_level level)
477 {
478         struct wm9090_priv *wm9090 = snd_soc_component_get_drvdata(component);
479 
480         switch (level) {
481         case SND_SOC_BIAS_ON:
482                 break;
483 
484         case SND_SOC_BIAS_PREPARE:
485                 snd_soc_component_update_bits(component, WM9090_ANTIPOP2, WM9090_VMID_ENA,
486                                     WM9090_VMID_ENA);
487                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
488                                     WM9090_BIAS_ENA |
489                                     WM9090_VMID_RES_MASK,
490                                     WM9090_BIAS_ENA |
491                                     1 << WM9090_VMID_RES_SHIFT);
492                 msleep(1);  /* Probably an overestimate */
493                 break;
494 
495         case SND_SOC_BIAS_STANDBY:
496                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
497                         /* Restore the register cache */
498                         regcache_sync(wm9090->regmap);
499                 }
500 
501                 /* We keep VMID off during standby since the combination of
502                  * ground referenced outputs and class D speaker mean that
503                  * latency is not an issue.
504                  */
505                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
506                                     WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
507                 snd_soc_component_update_bits(component, WM9090_ANTIPOP2,
508                                     WM9090_VMID_ENA, 0);
509                 break;
510 
511         case SND_SOC_BIAS_OFF:
512                 break;
513         }
514 
515         return 0;
516 }
517 
518 static int wm9090_probe(struct snd_soc_component *component)
519 {
520         /* Configure some defaults; they will be written out when we
521          * bring the bias up.
522          */
523         snd_soc_component_update_bits(component, WM9090_IN1_LINE_INPUT_A_VOLUME,
524                             WM9090_IN1_VU | WM9090_IN1A_ZC,
525                             WM9090_IN1_VU | WM9090_IN1A_ZC);
526         snd_soc_component_update_bits(component, WM9090_IN1_LINE_INPUT_B_VOLUME,
527                             WM9090_IN1_VU | WM9090_IN1B_ZC,
528                             WM9090_IN1_VU | WM9090_IN1B_ZC);
529         snd_soc_component_update_bits(component, WM9090_IN2_LINE_INPUT_A_VOLUME,
530                             WM9090_IN2_VU | WM9090_IN2A_ZC,
531                             WM9090_IN2_VU | WM9090_IN2A_ZC);
532         snd_soc_component_update_bits(component, WM9090_IN2_LINE_INPUT_B_VOLUME,
533                             WM9090_IN2_VU | WM9090_IN2B_ZC,
534                             WM9090_IN2_VU | WM9090_IN2B_ZC);
535         snd_soc_component_update_bits(component, WM9090_SPEAKER_VOLUME_LEFT,
536                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC,
537                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC);
538         snd_soc_component_update_bits(component, WM9090_LEFT_OUTPUT_VOLUME,
539                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC,
540                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC);
541         snd_soc_component_update_bits(component, WM9090_RIGHT_OUTPUT_VOLUME,
542                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC,
543                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC);
544 
545         snd_soc_component_update_bits(component, WM9090_CLOCKING_1,
546                             WM9090_TOCLK_ENA, WM9090_TOCLK_ENA);
547 
548         wm9090_add_controls(component);
549 
550         return 0;
551 }
552 
553 static const struct snd_soc_component_driver soc_component_dev_wm9090 = {
554         .probe                  = wm9090_probe,
555         .set_bias_level         = wm9090_set_bias_level,
556         .suspend_bias_off       = 1,
557         .idle_bias_on           = 1,
558         .use_pmdown_time        = 1,
559         .endianness             = 1,
560         .non_legacy_dai_naming  = 1,
561 };
562 
563 static const struct regmap_config wm9090_regmap = {
564         .reg_bits = 8,
565         .val_bits = 16,
566 
567         .max_register = WM9090_MAX_REGISTER,
568         .volatile_reg = wm9090_volatile,
569         .readable_reg = wm9090_readable,
570 
571         .cache_type = REGCACHE_RBTREE,
572         .reg_defaults = wm9090_reg_defaults,
573         .num_reg_defaults = ARRAY_SIZE(wm9090_reg_defaults),
574 };
575 
576 
577 static int wm9090_i2c_probe(struct i2c_client *i2c,
578                             const struct i2c_device_id *id)
579 {
580         struct wm9090_priv *wm9090;
581         unsigned int reg;
582         int ret;
583 
584         wm9090 = devm_kzalloc(&i2c->dev, sizeof(*wm9090), GFP_KERNEL);
585         if (!wm9090)
586                 return -ENOMEM;
587 
588         wm9090->regmap = devm_regmap_init_i2c(i2c, &wm9090_regmap);
589         if (IS_ERR(wm9090->regmap)) {
590                 ret = PTR_ERR(wm9090->regmap);
591                 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
592                 return ret;
593         }
594 
595         ret = regmap_read(wm9090->regmap, WM9090_SOFTWARE_RESET, &reg);
596         if (ret < 0)
597                 return ret;
598 
599         if (reg != 0x9093) {
600                 dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", reg);
601                 return -ENODEV;
602         }
603 
604         ret = regmap_write(wm9090->regmap, WM9090_SOFTWARE_RESET, 0);
605         if (ret < 0)
606                 return ret;
607 
608         if (i2c->dev.platform_data)
609                 memcpy(&wm9090->pdata, i2c->dev.platform_data,
610                        sizeof(wm9090->pdata));
611 
612         i2c_set_clientdata(i2c, wm9090);
613 
614         ret =  devm_snd_soc_register_component(&i2c->dev,
615                         &soc_component_dev_wm9090,  NULL, 0);
616         if (ret != 0) {
617                 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
618                 return ret;
619         }
620 
621         return 0;
622 }
623 
624 static const struct i2c_device_id wm9090_id[] = {
625         { "wm9090", 0 },
626         { "wm9093", 0 },
627         { }
628 };
629 MODULE_DEVICE_TABLE(i2c, wm9090_id);
630 
631 static struct i2c_driver wm9090_i2c_driver = {
632         .driver = {
633                 .name = "wm9090",
634         },
635         .probe = wm9090_i2c_probe,
636         .id_table = wm9090_id,
637 };
638 
639 module_i2c_driver(wm9090_i2c_driver);
640 
641 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
642 MODULE_DESCRIPTION("WM9090 ASoC driver");
643 MODULE_LICENSE("GPL");
644 

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