xref: /openbmc/linux/sound/soc/codecs/wm9090.c (revision b028b1ef)
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 
wm9090_volatile(struct device * dev,unsigned int reg)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 
wm9090_readable(struct device * dev,unsigned int reg)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 
wait_for_dc_servo(struct snd_soc_component * component)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_read(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 
hp_ev(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)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_read(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 
wm9090_add_controls(struct snd_soc_component * component)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  */
wm9090_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)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 
wm9090_probe(struct snd_soc_component * component)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 };
547 
548 static const struct regmap_config wm9090_regmap = {
549 	.reg_bits = 8,
550 	.val_bits = 16,
551 
552 	.max_register = WM9090_MAX_REGISTER,
553 	.volatile_reg = wm9090_volatile,
554 	.readable_reg = wm9090_readable,
555 
556 	.cache_type = REGCACHE_MAPLE,
557 	.reg_defaults = wm9090_reg_defaults,
558 	.num_reg_defaults = ARRAY_SIZE(wm9090_reg_defaults),
559 };
560 
561 
wm9090_i2c_probe(struct i2c_client * i2c)562 static int wm9090_i2c_probe(struct i2c_client *i2c)
563 {
564 	struct wm9090_priv *wm9090;
565 	unsigned int reg;
566 	int ret;
567 
568 	wm9090 = devm_kzalloc(&i2c->dev, sizeof(*wm9090), GFP_KERNEL);
569 	if (!wm9090)
570 		return -ENOMEM;
571 
572 	wm9090->regmap = devm_regmap_init_i2c(i2c, &wm9090_regmap);
573 	if (IS_ERR(wm9090->regmap)) {
574 		ret = PTR_ERR(wm9090->regmap);
575 		dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
576 		return ret;
577 	}
578 
579 	ret = regmap_read(wm9090->regmap, WM9090_SOFTWARE_RESET, &reg);
580 	if (ret < 0)
581 		return ret;
582 
583 	if (reg != 0x9093) {
584 		dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", reg);
585 		return -ENODEV;
586 	}
587 
588 	ret = regmap_write(wm9090->regmap, WM9090_SOFTWARE_RESET, 0);
589 	if (ret < 0)
590 		return ret;
591 
592 	if (i2c->dev.platform_data)
593 		memcpy(&wm9090->pdata, i2c->dev.platform_data,
594 		       sizeof(wm9090->pdata));
595 
596 	i2c_set_clientdata(i2c, wm9090);
597 
598 	ret =  devm_snd_soc_register_component(&i2c->dev,
599 			&soc_component_dev_wm9090,  NULL, 0);
600 	if (ret != 0) {
601 		dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
602 		return ret;
603 	}
604 
605 	return 0;
606 }
607 
608 static const struct i2c_device_id wm9090_id[] = {
609 	{ "wm9090", 0 },
610 	{ "wm9093", 0 },
611 	{ }
612 };
613 MODULE_DEVICE_TABLE(i2c, wm9090_id);
614 
615 static struct i2c_driver wm9090_i2c_driver = {
616 	.driver = {
617 		.name = "wm9090",
618 	},
619 	.probe = wm9090_i2c_probe,
620 	.id_table = wm9090_id,
621 };
622 
623 module_i2c_driver(wm9090_i2c_driver);
624 
625 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
626 MODULE_DESCRIPTION("WM9090 ASoC driver");
627 MODULE_LICENSE("GPL");
628