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

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  * ALSA SoC WM9090 driver
  4  *
  5  * Copyright 2009-12 Wolfson Microelectronics
  6  *
  7  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  8  */
  9 
 10 #include <linux/module.h>
 11 #include <linux/errno.h>
 12 #include <linux/device.h>
 13 #include <linux/i2c.h>
 14 #include <linux/delay.h>
 15 #include <linux/regmap.h>
 16 #include <linux/slab.h>
 17 #include <sound/initval.h>
 18 #include <sound/soc.h>
 19 #include <sound/tlv.h>
 20 #include <sound/wm9090.h>
 21 
 22 #include "wm9090.h"
 23 
 24 static const struct reg_default wm9090_reg_defaults[] = {
 25         { 1,  0x0006 },     /* R1   - Power Management (1) */
 26         { 2,  0x6000 },     /* R2   - Power Management (2) */
 27         { 3,  0x0000 },     /* R3   - Power Management (3) */
 28         { 6,  0x01C0 },     /* R6   - Clocking 1 */
 29         { 22, 0x0003 },     /* R22  - IN1 Line Control */
 30         { 23, 0x0003 },     /* R23  - IN2 Line Control */
 31         { 24, 0x0083 },     /* R24  - IN1 Line Input A Volume */
 32         { 25, 0x0083 },     /* R25  - IN1  Line Input B Volume */
 33         { 26, 0x0083 },     /* R26  - IN2 Line Input A Volume */
 34         { 27, 0x0083 },     /* R27  - IN2 Line Input B Volume */
 35         { 28, 0x002D },     /* R28  - Left Output Volume */
 36         { 29, 0x002D },     /* R29  - Right Output Volume */
 37         { 34, 0x0100 },     /* R34  - SPKMIXL Attenuation */
 38         { 35, 0x0010 },     /* R36  - SPKOUT Mixers */
 39         { 37, 0x0140 },     /* R37  - ClassD3 */
 40         { 38, 0x0039 },     /* R38  - Speaker Volume Left */
 41         { 45, 0x0000 },     /* R45  - Output Mixer1 */
 42         { 46, 0x0000 },     /* R46  - Output Mixer2 */
 43         { 47, 0x0100 },     /* R47  - Output Mixer3 */
 44         { 48, 0x0100 },     /* R48  - Output Mixer4 */
 45         { 54, 0x0000 },     /* R54  - Speaker Mixer */
 46         { 57, 0x000D },     /* R57  - AntiPOP2 */
 47         { 70, 0x0000 },     /* R70  - Write Sequencer 0 */
 48         { 71, 0x0000 },     /* R71  - Write Sequencer 1 */
 49         { 72, 0x0000 },     /* R72  - Write Sequencer 2 */
 50         { 73, 0x0000 },     /* R73  - Write Sequencer 3 */
 51         { 74, 0x0000 },     /* R74  - Write Sequencer 4 */
 52         { 75, 0x0000 },     /* R75  - Write Sequencer 5 */
 53         { 76, 0x1F25 },     /* R76  - Charge Pump 1 */
 54         { 85, 0x054A },     /* R85  - DC Servo 1 */
 55         { 87, 0x0000 },     /* R87  - DC Servo 3 */
 56         { 96, 0x0100 },     /* R96  - Analogue HP 0 */
 57         { 98, 0x8640 },     /* R98  - AGC Control 0 */
 58         { 99, 0xC000 },     /* R99  - AGC Control 1 */
 59         { 100, 0x0200 },     /* R100 - AGC Control 2 */
 60 };
 61 
 62 /* This struct is used to save the context */
 63 struct wm9090_priv {
 64         struct wm9090_platform_data pdata;
 65         struct regmap *regmap;
 66 };
 67 
 68 static bool wm9090_volatile(struct device *dev, unsigned int reg)
 69 {
 70         switch (reg) {
 71         case WM9090_SOFTWARE_RESET:
 72         case WM9090_DC_SERVO_0:
 73         case WM9090_DC_SERVO_READBACK_0:
 74         case WM9090_DC_SERVO_READBACK_1:
 75         case WM9090_DC_SERVO_READBACK_2:
 76                 return true;
 77 
 78         default:
 79                 return false;
 80         }
 81 }
 82 
 83 static bool wm9090_readable(struct device *dev, unsigned int reg)
 84 {
 85         switch (reg) {
 86         case WM9090_SOFTWARE_RESET:
 87         case WM9090_POWER_MANAGEMENT_1:
 88         case WM9090_POWER_MANAGEMENT_2:
 89         case WM9090_POWER_MANAGEMENT_3:
 90         case WM9090_CLOCKING_1:
 91         case WM9090_IN1_LINE_CONTROL:
 92         case WM9090_IN2_LINE_CONTROL:
 93         case WM9090_IN1_LINE_INPUT_A_VOLUME:
 94         case WM9090_IN1_LINE_INPUT_B_VOLUME:
 95         case WM9090_IN2_LINE_INPUT_A_VOLUME:
 96         case WM9090_IN2_LINE_INPUT_B_VOLUME:
 97         case WM9090_LEFT_OUTPUT_VOLUME:
 98         case WM9090_RIGHT_OUTPUT_VOLUME:
 99         case WM9090_SPKMIXL_ATTENUATION:
100         case WM9090_SPKOUT_MIXERS:
101         case WM9090_CLASSD3:
102         case WM9090_SPEAKER_VOLUME_LEFT:
103         case WM9090_OUTPUT_MIXER1:
104         case WM9090_OUTPUT_MIXER2:
105         case WM9090_OUTPUT_MIXER3:
106         case WM9090_OUTPUT_MIXER4:
107         case WM9090_SPEAKER_MIXER:
108         case WM9090_ANTIPOP2:
109         case WM9090_WRITE_SEQUENCER_0:
110         case WM9090_WRITE_SEQUENCER_1:
111         case WM9090_WRITE_SEQUENCER_2:
112         case WM9090_WRITE_SEQUENCER_3:
113         case WM9090_WRITE_SEQUENCER_4:
114         case WM9090_WRITE_SEQUENCER_5:
115         case WM9090_CHARGE_PUMP_1:
116         case WM9090_DC_SERVO_0:
117         case WM9090_DC_SERVO_1:
118         case WM9090_DC_SERVO_3:
119         case WM9090_DC_SERVO_READBACK_0:
120         case WM9090_DC_SERVO_READBACK_1:
121         case WM9090_DC_SERVO_READBACK_2:
122         case WM9090_ANALOGUE_HP_0:
123         case WM9090_AGC_CONTROL_0:
124         case WM9090_AGC_CONTROL_1:
125         case WM9090_AGC_CONTROL_2:
126                 return true;
127 
128         default:
129                 return false;
130         }
131 }
132 
133 static void wait_for_dc_servo(struct snd_soc_component *component)
134 {
135         unsigned int reg;
136         int count = 0;
137 
138         dev_dbg(component->dev, "Waiting for DC servo...\n");
139         do {
140                 count++;
141                 msleep(1);
142                 reg = snd_soc_component_read32(component, WM9090_DC_SERVO_READBACK_0);
143                 dev_dbg(component->dev, "DC servo status: %x\n", reg);
144         } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
145                  != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);
146 
147         if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
148             != WM9090_DCS_CAL_COMPLETE_MASK)
149                 dev_err(component->dev, "Timed out waiting for DC Servo\n");
150 }
151 
152 static const DECLARE_TLV_DB_RANGE(in_tlv,
153         0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
154         1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
155         4, 6, TLV_DB_SCALE_ITEM(600, 600, 0)
156 );
157 static const DECLARE_TLV_DB_RANGE(mix_tlv,
158         0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
159         3, 3, TLV_DB_SCALE_ITEM(0, 0, 0)
160 );
161 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
162 static const DECLARE_TLV_DB_RANGE(spkboost_tlv,
163         0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
164         7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0)
165 );
166 
167 static const struct snd_kcontrol_new wm9090_controls[] = {
168 SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
169                in_tlv),
170 SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
171 SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
172 
173 SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
174                in_tlv),
175 SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
176 SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
177 
178 SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
179 SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
180                mix_tlv),
181 SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
182                mix_tlv),
183 
184 SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
185 SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
186                mix_tlv),
187 SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
188                mix_tlv),
189 
190 SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
191 SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
192                mix_tlv),
193 SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
194                mix_tlv),
195 
196 SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
197                  WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
198 SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
199              WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
200 SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
201              WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
202 
203 SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
204                out_tlv),
205 SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
206 SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
207 SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
208 };
209 
210 static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
211 SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
212                in_tlv),
213 SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
214 SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
215 
216 SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
217                mix_tlv),
218 SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
219                mix_tlv),
220 SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
221                mix_tlv),
222 };
223 
224 static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
225 SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
226                in_tlv),
227 SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
228 SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
229 
230 SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
231                mix_tlv),
232 SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
233                mix_tlv),
234 SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
235                mix_tlv),
236 };
237 
238 static int hp_ev(struct snd_soc_dapm_widget *w,
239                  struct snd_kcontrol *kcontrol, int event)
240 {
241         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
242         unsigned int reg = snd_soc_component_read32(component, WM9090_ANALOGUE_HP_0);
243 
244         switch (event) {
245         case SND_SOC_DAPM_POST_PMU:
246                 snd_soc_component_update_bits(component, WM9090_CHARGE_PUMP_1,
247                                     WM9090_CP_ENA, WM9090_CP_ENA);
248 
249                 msleep(5);
250 
251                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
252                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
253                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
254 
255                 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
256                 snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg);
257 
258                 /* Start the DC servo.  We don't currently use the
259                  * ability to save the state since we don't have full
260                  * control of the analogue paths and they can change
261                  * DC offsets; see the WM8904 driver for an example of
262                  * doing so.
263                  */
264                 snd_soc_component_write(component, WM9090_DC_SERVO_0,
265                               WM9090_DCS_ENA_CHAN_0 |
266                               WM9090_DCS_ENA_CHAN_1 |
267                               WM9090_DCS_TRIG_STARTUP_1 |
268                               WM9090_DCS_TRIG_STARTUP_0);
269                 wait_for_dc_servo(component);
270 
271                 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
272                         WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
273                 snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg);
274                 break;
275 
276         case SND_SOC_DAPM_PRE_PMD:
277                 reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
278                          WM9090_HPOUT1L_DLY |
279                          WM9090_HPOUT1L_OUTP |
280                          WM9090_HPOUT1R_RMV_SHORT |
281                          WM9090_HPOUT1R_DLY |
282                          WM9090_HPOUT1R_OUTP);
283 
284                 snd_soc_component_write(component, WM9090_ANALOGUE_HP_0, reg);
285 
286                 snd_soc_component_write(component, WM9090_DC_SERVO_0, 0);
287 
288                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
289                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
290                                     0);
291 
292                 snd_soc_component_update_bits(component, WM9090_CHARGE_PUMP_1,
293                                     WM9090_CP_ENA, 0);
294                 break;
295         }
296 
297         return 0;
298 }
299 
300 static const struct snd_kcontrol_new spkmix[] = {
301 SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
302 SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
303 SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
304 SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
305 };
306 
307 static const struct snd_kcontrol_new spkout[] = {
308 SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
309 };
310 
311 static const struct snd_kcontrol_new mixoutl[] = {
312 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
313 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
314 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
315 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
316 };
317 
318 static const struct snd_kcontrol_new mixoutr[] = {
319 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
320 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
321 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
322 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
323 };
324 
325 static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
326 SND_SOC_DAPM_INPUT("IN1+"),
327 SND_SOC_DAPM_INPUT("IN1-"),
328 SND_SOC_DAPM_INPUT("IN2+"),
329 SND_SOC_DAPM_INPUT("IN2-"),
330 
331 SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
332 
333 SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
334 SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
335 SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
336 SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
337 
338 SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
339                    spkmix, ARRAY_SIZE(spkmix)),
340 SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
341                    mixoutl, ARRAY_SIZE(mixoutl)),
342 SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
343                    mixoutr, ARRAY_SIZE(mixoutr)),
344 
345 SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
346                    hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
347 
348 SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
349 SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
350                    spkout, ARRAY_SIZE(spkout)),
351 
352 SND_SOC_DAPM_OUTPUT("HPR"),
353 SND_SOC_DAPM_OUTPUT("HPL"),
354 SND_SOC_DAPM_OUTPUT("Speaker"),
355 };
356 
357 static const struct snd_soc_dapm_route audio_map[] = {
358         { "IN1A PGA", NULL, "IN1+" },
359         { "IN2A PGA", NULL, "IN2+" },
360 
361         { "SPKMIX", "IN1A Switch", "IN1A PGA" },
362         { "SPKMIX", "IN2A Switch", "IN2A PGA" },
363 
364         { "MIXOUTL", "IN1A Switch", "IN1A PGA" },
365         { "MIXOUTL", "IN2A Switch", "IN2A PGA" },
366 
367         { "MIXOUTR", "IN1A Switch", "IN1A PGA" },
368         { "MIXOUTR", "IN2A Switch", "IN2A PGA" },
369 
370         { "HP PGA", NULL, "OSC" },
371         { "HP PGA", NULL, "MIXOUTL" },
372         { "HP PGA", NULL, "MIXOUTR" },
373 
374         { "HPL", NULL, "HP PGA" },
375         { "HPR", NULL, "HP PGA" },
376 
377         { "SPKPGA", NULL, "OSC" },
378         { "SPKPGA", NULL, "SPKMIX" },
379 
380         { "SPKOUT", "Mixer Switch", "SPKPGA" },
381 
382         { "Speaker", NULL, "SPKOUT" },
383 };
384 
385 static const struct snd_soc_dapm_route audio_map_in1_se[] = {
386         { "IN1B PGA", NULL, "IN1-" },   
387 
388         { "SPKMIX", "IN1B Switch", "IN1B PGA" },
389         { "MIXOUTL", "IN1B Switch", "IN1B PGA" },
390         { "MIXOUTR", "IN1B Switch", "IN1B PGA" },
391 };
392 
393 static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
394         { "IN1A PGA", NULL, "IN1-" },   
395 };
396 
397 static const struct snd_soc_dapm_route audio_map_in2_se[] = {
398         { "IN2B PGA", NULL, "IN2-" },   
399 
400         { "SPKMIX", "IN2B Switch", "IN2B PGA" },
401         { "MIXOUTL", "IN2B Switch", "IN2B PGA" },
402         { "MIXOUTR", "IN2B Switch", "IN2B PGA" },
403 };
404 
405 static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
406         { "IN2A PGA", NULL, "IN2-" },   
407 };
408 
409 static int wm9090_add_controls(struct snd_soc_component *component)
410 {
411         struct wm9090_priv *wm9090 = snd_soc_component_get_drvdata(component);
412         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
413         int i;
414 
415         snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
416                                   ARRAY_SIZE(wm9090_dapm_widgets));
417 
418         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
419 
420         snd_soc_add_component_controls(component, wm9090_controls,
421                              ARRAY_SIZE(wm9090_controls));
422 
423         if (wm9090->pdata.lin1_diff) {
424                 snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
425                                         ARRAY_SIZE(audio_map_in1_diff));
426         } else {
427                 snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
428                                         ARRAY_SIZE(audio_map_in1_se));
429                 snd_soc_add_component_controls(component, wm9090_in1_se_controls,
430                                      ARRAY_SIZE(wm9090_in1_se_controls));
431         }
432 
433         if (wm9090->pdata.lin2_diff) {
434                 snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
435                                         ARRAY_SIZE(audio_map_in2_diff));
436         } else {
437                 snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
438                                         ARRAY_SIZE(audio_map_in2_se));
439                 snd_soc_add_component_controls(component, wm9090_in2_se_controls,
440                                      ARRAY_SIZE(wm9090_in2_se_controls));
441         }
442 
443         if (wm9090->pdata.agc_ena) {
444                 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
445                         snd_soc_component_write(component, WM9090_AGC_CONTROL_0 + i,
446                                       wm9090->pdata.agc[i]);
447                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_3,
448                                     WM9090_AGC_ENA, WM9090_AGC_ENA);
449         } else {
450                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_3,
451                                     WM9090_AGC_ENA, 0);
452         }
453 
454         return 0;
455 
456 }
457 
458 /*
459  * The machine driver should call this from their set_bias_level; if there
460  * isn't one then this can just be set as the set_bias_level function.
461  */
462 static int wm9090_set_bias_level(struct snd_soc_component *component,
463                                  enum snd_soc_bias_level level)
464 {
465         struct wm9090_priv *wm9090 = snd_soc_component_get_drvdata(component);
466 
467         switch (level) {
468         case SND_SOC_BIAS_ON:
469                 break;
470 
471         case SND_SOC_BIAS_PREPARE:
472                 snd_soc_component_update_bits(component, WM9090_ANTIPOP2, WM9090_VMID_ENA,
473                                     WM9090_VMID_ENA);
474                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
475                                     WM9090_BIAS_ENA |
476                                     WM9090_VMID_RES_MASK,
477                                     WM9090_BIAS_ENA |
478                                     1 << WM9090_VMID_RES_SHIFT);
479                 msleep(1);  /* Probably an overestimate */
480                 break;
481 
482         case SND_SOC_BIAS_STANDBY:
483                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
484                         /* Restore the register cache */
485                         regcache_sync(wm9090->regmap);
486                 }
487 
488                 /* We keep VMID off during standby since the combination of
489                  * ground referenced outputs and class D speaker mean that
490                  * latency is not an issue.
491                  */
492                 snd_soc_component_update_bits(component, WM9090_POWER_MANAGEMENT_1,
493                                     WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
494                 snd_soc_component_update_bits(component, WM9090_ANTIPOP2,
495                                     WM9090_VMID_ENA, 0);
496                 break;
497 
498         case SND_SOC_BIAS_OFF:
499                 break;
500         }
501 
502         return 0;
503 }
504 
505 static int wm9090_probe(struct snd_soc_component *component)
506 {
507         /* Configure some defaults; they will be written out when we
508          * bring the bias up.
509          */
510         snd_soc_component_update_bits(component, WM9090_IN1_LINE_INPUT_A_VOLUME,
511                             WM9090_IN1_VU | WM9090_IN1A_ZC,
512                             WM9090_IN1_VU | WM9090_IN1A_ZC);
513         snd_soc_component_update_bits(component, WM9090_IN1_LINE_INPUT_B_VOLUME,
514                             WM9090_IN1_VU | WM9090_IN1B_ZC,
515                             WM9090_IN1_VU | WM9090_IN1B_ZC);
516         snd_soc_component_update_bits(component, WM9090_IN2_LINE_INPUT_A_VOLUME,
517                             WM9090_IN2_VU | WM9090_IN2A_ZC,
518                             WM9090_IN2_VU | WM9090_IN2A_ZC);
519         snd_soc_component_update_bits(component, WM9090_IN2_LINE_INPUT_B_VOLUME,
520                             WM9090_IN2_VU | WM9090_IN2B_ZC,
521                             WM9090_IN2_VU | WM9090_IN2B_ZC);
522         snd_soc_component_update_bits(component, WM9090_SPEAKER_VOLUME_LEFT,
523                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC,
524                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC);
525         snd_soc_component_update_bits(component, WM9090_LEFT_OUTPUT_VOLUME,
526                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC,
527                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC);
528         snd_soc_component_update_bits(component, WM9090_RIGHT_OUTPUT_VOLUME,
529                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC,
530                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC);
531 
532         snd_soc_component_update_bits(component, WM9090_CLOCKING_1,
533                             WM9090_TOCLK_ENA, WM9090_TOCLK_ENA);
534 
535         wm9090_add_controls(component);
536 
537         return 0;
538 }
539 
540 static const struct snd_soc_component_driver soc_component_dev_wm9090 = {
541         .probe                  = wm9090_probe,
542         .set_bias_level         = wm9090_set_bias_level,
543         .suspend_bias_off       = 1,
544         .idle_bias_on           = 1,
545         .use_pmdown_time        = 1,
546         .endianness             = 1,
547         .non_legacy_dai_naming  = 1,
548 };
549 
550 static const struct regmap_config wm9090_regmap = {
551         .reg_bits = 8,
552         .val_bits = 16,
553 
554         .max_register = WM9090_MAX_REGISTER,
555         .volatile_reg = wm9090_volatile,
556         .readable_reg = wm9090_readable,
557 
558         .cache_type = REGCACHE_RBTREE,
559         .reg_defaults = wm9090_reg_defaults,
560         .num_reg_defaults = ARRAY_SIZE(wm9090_reg_defaults),
561 };
562 
563 
564 static int wm9090_i2c_probe(struct i2c_client *i2c,
565                             const struct i2c_device_id *id)
566 {
567         struct wm9090_priv *wm9090;
568         unsigned int reg;
569         int ret;
570 
571         wm9090 = devm_kzalloc(&i2c->dev, sizeof(*wm9090), GFP_KERNEL);
572         if (!wm9090)
573                 return -ENOMEM;
574 
575         wm9090->regmap = devm_regmap_init_i2c(i2c, &wm9090_regmap);
576         if (IS_ERR(wm9090->regmap)) {
577                 ret = PTR_ERR(wm9090->regmap);
578                 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
579                 return ret;
580         }
581 
582         ret = regmap_read(wm9090->regmap, WM9090_SOFTWARE_RESET, &reg);
583         if (ret < 0)
584                 return ret;
585 
586         if (reg != 0x9093) {
587                 dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", reg);
588                 return -ENODEV;
589         }
590 
591         ret = regmap_write(wm9090->regmap, WM9090_SOFTWARE_RESET, 0);
592         if (ret < 0)
593                 return ret;
594 
595         if (i2c->dev.platform_data)
596                 memcpy(&wm9090->pdata, i2c->dev.platform_data,
597                        sizeof(wm9090->pdata));
598 
599         i2c_set_clientdata(i2c, wm9090);
600 
601         ret =  devm_snd_soc_register_component(&i2c->dev,
602                         &soc_component_dev_wm9090,  NULL, 0);
603         if (ret != 0) {
604                 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
605                 return ret;
606         }
607 
608         return 0;
609 }
610 
611 static const struct i2c_device_id wm9090_id[] = {
612         { "wm9090", 0 },
613         { "wm9093", 0 },
614         { }
615 };
616 MODULE_DEVICE_TABLE(i2c, wm9090_id);
617 
618 static struct i2c_driver wm9090_i2c_driver = {
619         .driver = {
620                 .name = "wm9090",
621         },
622         .probe = wm9090_i2c_probe,
623         .id_table = wm9090_id,
624 };
625 
626 module_i2c_driver(wm9090_i2c_driver);
627 
628 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
629 MODULE_DESCRIPTION("WM9090 ASoC driver");
630 MODULE_LICENSE("GPL");
631 

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