1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * wm8900.c -- WM8900 ALSA Soc Audio driver
4 *
5 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 *
9 * TODO:
10 * - Tristating.
11 * - TDM.
12 * - Jack detect.
13 * - FLL source configuration, currently only MCLK is supported.
14 */
15
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/delay.h>
21 #include <linux/pm.h>
22 #include <linux/i2c.h>
23 #include <linux/regmap.h>
24 #include <linux/spi/spi.h>
25 #include <linux/slab.h>
26 #include <sound/core.h>
27 #include <sound/pcm.h>
28 #include <sound/pcm_params.h>
29 #include <sound/soc.h>
30 #include <sound/initval.h>
31 #include <sound/tlv.h>
32
33 #include "wm8900.h"
34
35 /* WM8900 register space */
36 #define WM8900_REG_RESET 0x0
37 #define WM8900_REG_ID 0x0
38 #define WM8900_REG_POWER1 0x1
39 #define WM8900_REG_POWER2 0x2
40 #define WM8900_REG_POWER3 0x3
41 #define WM8900_REG_AUDIO1 0x4
42 #define WM8900_REG_AUDIO2 0x5
43 #define WM8900_REG_CLOCKING1 0x6
44 #define WM8900_REG_CLOCKING2 0x7
45 #define WM8900_REG_AUDIO3 0x8
46 #define WM8900_REG_AUDIO4 0x9
47 #define WM8900_REG_DACCTRL 0xa
48 #define WM8900_REG_LDAC_DV 0xb
49 #define WM8900_REG_RDAC_DV 0xc
50 #define WM8900_REG_SIDETONE 0xd
51 #define WM8900_REG_ADCCTRL 0xe
52 #define WM8900_REG_LADC_DV 0xf
53 #define WM8900_REG_RADC_DV 0x10
54 #define WM8900_REG_GPIO 0x12
55 #define WM8900_REG_INCTL 0x15
56 #define WM8900_REG_LINVOL 0x16
57 #define WM8900_REG_RINVOL 0x17
58 #define WM8900_REG_INBOOSTMIX1 0x18
59 #define WM8900_REG_INBOOSTMIX2 0x19
60 #define WM8900_REG_ADCPATH 0x1a
61 #define WM8900_REG_AUXBOOST 0x1b
62 #define WM8900_REG_ADDCTL 0x1e
63 #define WM8900_REG_FLLCTL1 0x24
64 #define WM8900_REG_FLLCTL2 0x25
65 #define WM8900_REG_FLLCTL3 0x26
66 #define WM8900_REG_FLLCTL4 0x27
67 #define WM8900_REG_FLLCTL5 0x28
68 #define WM8900_REG_FLLCTL6 0x29
69 #define WM8900_REG_LOUTMIXCTL1 0x2c
70 #define WM8900_REG_ROUTMIXCTL1 0x2d
71 #define WM8900_REG_BYPASS1 0x2e
72 #define WM8900_REG_BYPASS2 0x2f
73 #define WM8900_REG_AUXOUT_CTL 0x30
74 #define WM8900_REG_LOUT1CTL 0x33
75 #define WM8900_REG_ROUT1CTL 0x34
76 #define WM8900_REG_LOUT2CTL 0x35
77 #define WM8900_REG_ROUT2CTL 0x36
78 #define WM8900_REG_HPCTL1 0x3a
79 #define WM8900_REG_OUTBIASCTL 0x73
80
81 #define WM8900_MAXREG 0x80
82
83 #define WM8900_REG_ADDCTL_OUT1_DIS 0x80
84 #define WM8900_REG_ADDCTL_OUT2_DIS 0x40
85 #define WM8900_REG_ADDCTL_VMID_DIS 0x20
86 #define WM8900_REG_ADDCTL_BIAS_SRC 0x10
87 #define WM8900_REG_ADDCTL_VMID_SOFTST 0x04
88 #define WM8900_REG_ADDCTL_TEMP_SD 0x02
89
90 #define WM8900_REG_GPIO_TEMP_ENA 0x2
91
92 #define WM8900_REG_POWER1_STARTUP_BIAS_ENA 0x0100
93 #define WM8900_REG_POWER1_BIAS_ENA 0x0008
94 #define WM8900_REG_POWER1_VMID_BUF_ENA 0x0004
95 #define WM8900_REG_POWER1_FLL_ENA 0x0040
96
97 #define WM8900_REG_POWER2_SYSCLK_ENA 0x8000
98 #define WM8900_REG_POWER2_ADCL_ENA 0x0002
99 #define WM8900_REG_POWER2_ADCR_ENA 0x0001
100
101 #define WM8900_REG_POWER3_DACL_ENA 0x0002
102 #define WM8900_REG_POWER3_DACR_ENA 0x0001
103
104 #define WM8900_REG_AUDIO1_AIF_FMT_MASK 0x0018
105 #define WM8900_REG_AUDIO1_LRCLK_INV 0x0080
106 #define WM8900_REG_AUDIO1_BCLK_INV 0x0100
107
108 #define WM8900_REG_CLOCKING1_BCLK_DIR 0x1
109 #define WM8900_REG_CLOCKING1_MCLK_SRC 0x100
110 #define WM8900_REG_CLOCKING1_BCLK_MASK 0x01e
111 #define WM8900_REG_CLOCKING1_OPCLK_MASK 0x7000
112
113 #define WM8900_REG_CLOCKING2_ADC_CLKDIV 0xe0
114 #define WM8900_REG_CLOCKING2_DAC_CLKDIV 0x1c
115
116 #define WM8900_REG_DACCTRL_MUTE 0x004
117 #define WM8900_REG_DACCTRL_DAC_SB_FILT 0x100
118 #define WM8900_REG_DACCTRL_AIF_LRCLKRATE 0x400
119
120 #define WM8900_REG_AUDIO3_ADCLRC_DIR 0x0800
121
122 #define WM8900_REG_AUDIO4_DACLRC_DIR 0x0800
123
124 #define WM8900_REG_FLLCTL1_OSC_ENA 0x100
125
126 #define WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF 0x100
127
128 #define WM8900_REG_HPCTL1_HP_IPSTAGE_ENA 0x80
129 #define WM8900_REG_HPCTL1_HP_OPSTAGE_ENA 0x40
130 #define WM8900_REG_HPCTL1_HP_CLAMP_IP 0x20
131 #define WM8900_REG_HPCTL1_HP_CLAMP_OP 0x10
132 #define WM8900_REG_HPCTL1_HP_SHORT 0x08
133 #define WM8900_REG_HPCTL1_HP_SHORT2 0x04
134
135 #define WM8900_LRC_MASK 0x03ff
136
137 struct wm8900_priv {
138 struct regmap *regmap;
139
140 u32 fll_in; /* FLL input frequency */
141 u32 fll_out; /* FLL output frequency */
142 };
143
144 /*
145 * wm8900 register cache. We can't read the entire register space and we
146 * have slow control buses so we cache the registers.
147 */
148 static const struct reg_default wm8900_reg_defaults[] = {
149 { 1, 0x0000 },
150 { 2, 0xc000 },
151 { 3, 0x0000 },
152 { 4, 0x4050 },
153 { 5, 0x4000 },
154 { 6, 0x0008 },
155 { 7, 0x0000 },
156 { 8, 0x0040 },
157 { 9, 0x0040 },
158 { 10, 0x1004 },
159 { 11, 0x00c0 },
160 { 12, 0x00c0 },
161 { 13, 0x0000 },
162 { 14, 0x0100 },
163 { 15, 0x00c0 },
164 { 16, 0x00c0 },
165 { 17, 0x0000 },
166 { 18, 0xb001 },
167 { 19, 0x0000 },
168 { 20, 0x0000 },
169 { 21, 0x0044 },
170 { 22, 0x004c },
171 { 23, 0x004c },
172 { 24, 0x0044 },
173 { 25, 0x0044 },
174 { 26, 0x0000 },
175 { 27, 0x0044 },
176 { 28, 0x0000 },
177 { 29, 0x0000 },
178 { 30, 0x0002 },
179 { 31, 0x0000 },
180 { 32, 0x0000 },
181 { 33, 0x0000 },
182 { 34, 0x0000 },
183 { 35, 0x0000 },
184 { 36, 0x0008 },
185 { 37, 0x0000 },
186 { 38, 0x0000 },
187 { 39, 0x0008 },
188 { 40, 0x0097 },
189 { 41, 0x0100 },
190 { 42, 0x0000 },
191 { 43, 0x0000 },
192 { 44, 0x0050 },
193 { 45, 0x0050 },
194 { 46, 0x0055 },
195 { 47, 0x0055 },
196 { 48, 0x0055 },
197 { 49, 0x0000 },
198 { 50, 0x0000 },
199 { 51, 0x0079 },
200 { 52, 0x0079 },
201 { 53, 0x0079 },
202 { 54, 0x0079 },
203 { 55, 0x0000 },
204 };
205
wm8900_volatile_register(struct device * dev,unsigned int reg)206 static bool wm8900_volatile_register(struct device *dev, unsigned int reg)
207 {
208 switch (reg) {
209 case WM8900_REG_ID:
210 return true;
211 default:
212 return false;
213 }
214 }
215
wm8900_reset(struct snd_soc_component * component)216 static void wm8900_reset(struct snd_soc_component *component)
217 {
218 snd_soc_component_write(component, WM8900_REG_RESET, 0);
219 }
220
wm8900_hp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)221 static int wm8900_hp_event(struct snd_soc_dapm_widget *w,
222 struct snd_kcontrol *kcontrol, int event)
223 {
224 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
225 u16 hpctl1 = snd_soc_component_read(component, WM8900_REG_HPCTL1);
226
227 switch (event) {
228 case SND_SOC_DAPM_PRE_PMU:
229 /* Clamp headphone outputs */
230 hpctl1 = WM8900_REG_HPCTL1_HP_CLAMP_IP |
231 WM8900_REG_HPCTL1_HP_CLAMP_OP;
232 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
233 break;
234
235 case SND_SOC_DAPM_POST_PMU:
236 /* Enable the input stage */
237 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_IP;
238 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT |
239 WM8900_REG_HPCTL1_HP_SHORT2 |
240 WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
241 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
242
243 msleep(400);
244
245 /* Enable the output stage */
246 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_OP;
247 hpctl1 |= WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
248 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
249
250 /* Remove the shorts */
251 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT2;
252 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
253 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT;
254 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
255 break;
256
257 case SND_SOC_DAPM_PRE_PMD:
258 /* Short the output */
259 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT;
260 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
261
262 /* Disable the output stage */
263 hpctl1 &= ~WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
264 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
265
266 /* Clamp the outputs and power down input */
267 hpctl1 |= WM8900_REG_HPCTL1_HP_CLAMP_IP |
268 WM8900_REG_HPCTL1_HP_CLAMP_OP;
269 hpctl1 &= ~WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
270 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1);
271 break;
272
273 case SND_SOC_DAPM_POST_PMD:
274 /* Disable everything */
275 snd_soc_component_write(component, WM8900_REG_HPCTL1, 0);
276 break;
277
278 default:
279 WARN(1, "Invalid event %d\n", event);
280 break;
281 }
282
283 return 0;
284 }
285
286 static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -5700, 100, 0);
287
288 static const DECLARE_TLV_DB_SCALE(out_mix_tlv, -1500, 300, 0);
289
290 static const DECLARE_TLV_DB_SCALE(in_boost_tlv, -1200, 600, 0);
291
292 static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1200, 100, 0);
293
294 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
295
296 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
297
298 static const DECLARE_TLV_DB_SCALE(adc_svol_tlv, -3600, 300, 0);
299
300 static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1);
301
302 static const char *mic_bias_level_txt[] = { "0.9*AVDD", "0.65*AVDD" };
303
304 static SOC_ENUM_SINGLE_DECL(mic_bias_level,
305 WM8900_REG_INCTL, 8, mic_bias_level_txt);
306
307 static const char *dac_mute_rate_txt[] = { "Fast", "Slow" };
308
309 static SOC_ENUM_SINGLE_DECL(dac_mute_rate,
310 WM8900_REG_DACCTRL, 7, dac_mute_rate_txt);
311
312 static const char *dac_deemphasis_txt[] = {
313 "Disabled", "32kHz", "44.1kHz", "48kHz"
314 };
315
316 static SOC_ENUM_SINGLE_DECL(dac_deemphasis,
317 WM8900_REG_DACCTRL, 4, dac_deemphasis_txt);
318
319 static const char *adc_hpf_cut_txt[] = {
320 "Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3"
321 };
322
323 static SOC_ENUM_SINGLE_DECL(adc_hpf_cut,
324 WM8900_REG_ADCCTRL, 5, adc_hpf_cut_txt);
325
326 static const char *lr_txt[] = {
327 "Left", "Right"
328 };
329
330 static SOC_ENUM_SINGLE_DECL(aifl_src,
331 WM8900_REG_AUDIO1, 15, lr_txt);
332
333 static SOC_ENUM_SINGLE_DECL(aifr_src,
334 WM8900_REG_AUDIO1, 14, lr_txt);
335
336 static SOC_ENUM_SINGLE_DECL(dacl_src,
337 WM8900_REG_AUDIO2, 15, lr_txt);
338
339 static SOC_ENUM_SINGLE_DECL(dacr_src,
340 WM8900_REG_AUDIO2, 14, lr_txt);
341
342 static const char *sidetone_txt[] = {
343 "Disabled", "Left ADC", "Right ADC"
344 };
345
346 static SOC_ENUM_SINGLE_DECL(dacl_sidetone,
347 WM8900_REG_SIDETONE, 2, sidetone_txt);
348
349 static SOC_ENUM_SINGLE_DECL(dacr_sidetone,
350 WM8900_REG_SIDETONE, 0, sidetone_txt);
351
352 static const struct snd_kcontrol_new wm8900_snd_controls[] = {
353 SOC_ENUM("Mic Bias Level", mic_bias_level),
354
355 SOC_SINGLE_TLV("Left Input PGA Volume", WM8900_REG_LINVOL, 0, 31, 0,
356 in_pga_tlv),
357 SOC_SINGLE("Left Input PGA Switch", WM8900_REG_LINVOL, 6, 1, 1),
358 SOC_SINGLE("Left Input PGA ZC Switch", WM8900_REG_LINVOL, 7, 1, 0),
359
360 SOC_SINGLE_TLV("Right Input PGA Volume", WM8900_REG_RINVOL, 0, 31, 0,
361 in_pga_tlv),
362 SOC_SINGLE("Right Input PGA Switch", WM8900_REG_RINVOL, 6, 1, 1),
363 SOC_SINGLE("Right Input PGA ZC Switch", WM8900_REG_RINVOL, 7, 1, 0),
364
365 SOC_SINGLE("DAC Soft Mute Switch", WM8900_REG_DACCTRL, 6, 1, 1),
366 SOC_ENUM("DAC Mute Rate", dac_mute_rate),
367 SOC_SINGLE("DAC Mono Switch", WM8900_REG_DACCTRL, 9, 1, 0),
368 SOC_ENUM("DAC Deemphasis", dac_deemphasis),
369 SOC_SINGLE("DAC Sigma-Delta Modulator Clock Switch", WM8900_REG_DACCTRL,
370 12, 1, 0),
371
372 SOC_SINGLE("ADC HPF Switch", WM8900_REG_ADCCTRL, 8, 1, 0),
373 SOC_ENUM("ADC HPF Cut-Off", adc_hpf_cut),
374 SOC_DOUBLE("ADC Invert Switch", WM8900_REG_ADCCTRL, 1, 0, 1, 0),
375 SOC_SINGLE_TLV("Left ADC Sidetone Volume", WM8900_REG_SIDETONE, 9, 12, 0,
376 adc_svol_tlv),
377 SOC_SINGLE_TLV("Right ADC Sidetone Volume", WM8900_REG_SIDETONE, 5, 12, 0,
378 adc_svol_tlv),
379 SOC_ENUM("Left Digital Audio Source", aifl_src),
380 SOC_ENUM("Right Digital Audio Source", aifr_src),
381
382 SOC_SINGLE_TLV("DAC Input Boost Volume", WM8900_REG_AUDIO2, 10, 4, 0,
383 dac_boost_tlv),
384 SOC_ENUM("Left DAC Source", dacl_src),
385 SOC_ENUM("Right DAC Source", dacr_src),
386 SOC_ENUM("Left DAC Sidetone", dacl_sidetone),
387 SOC_ENUM("Right DAC Sidetone", dacr_sidetone),
388 SOC_DOUBLE("DAC Invert Switch", WM8900_REG_DACCTRL, 1, 0, 1, 0),
389
390 SOC_DOUBLE_R_TLV("Digital Playback Volume",
391 WM8900_REG_LDAC_DV, WM8900_REG_RDAC_DV,
392 1, 96, 0, dac_tlv),
393 SOC_DOUBLE_R_TLV("Digital Capture Volume",
394 WM8900_REG_LADC_DV, WM8900_REG_RADC_DV, 1, 119, 0, adc_tlv),
395
396 SOC_SINGLE_TLV("LINPUT3 Bypass Volume", WM8900_REG_LOUTMIXCTL1, 4, 7, 0,
397 out_mix_tlv),
398 SOC_SINGLE_TLV("RINPUT3 Bypass Volume", WM8900_REG_ROUTMIXCTL1, 4, 7, 0,
399 out_mix_tlv),
400 SOC_SINGLE_TLV("Left AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 4, 7, 0,
401 out_mix_tlv),
402 SOC_SINGLE_TLV("Right AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 0, 7, 0,
403 out_mix_tlv),
404
405 SOC_SINGLE_TLV("LeftIn to RightOut Mixer Volume", WM8900_REG_BYPASS1, 0, 7, 0,
406 out_mix_tlv),
407 SOC_SINGLE_TLV("LeftIn to LeftOut Mixer Volume", WM8900_REG_BYPASS1, 4, 7, 0,
408 out_mix_tlv),
409 SOC_SINGLE_TLV("RightIn to LeftOut Mixer Volume", WM8900_REG_BYPASS2, 0, 7, 0,
410 out_mix_tlv),
411 SOC_SINGLE_TLV("RightIn to RightOut Mixer Volume", WM8900_REG_BYPASS2, 4, 7, 0,
412 out_mix_tlv),
413
414 SOC_SINGLE_TLV("IN2L Boost Volume", WM8900_REG_INBOOSTMIX1, 0, 3, 0,
415 in_boost_tlv),
416 SOC_SINGLE_TLV("IN3L Boost Volume", WM8900_REG_INBOOSTMIX1, 4, 3, 0,
417 in_boost_tlv),
418 SOC_SINGLE_TLV("IN2R Boost Volume", WM8900_REG_INBOOSTMIX2, 0, 3, 0,
419 in_boost_tlv),
420 SOC_SINGLE_TLV("IN3R Boost Volume", WM8900_REG_INBOOSTMIX2, 4, 3, 0,
421 in_boost_tlv),
422 SOC_SINGLE_TLV("Left AUX Boost Volume", WM8900_REG_AUXBOOST, 4, 3, 0,
423 in_boost_tlv),
424 SOC_SINGLE_TLV("Right AUX Boost Volume", WM8900_REG_AUXBOOST, 0, 3, 0,
425 in_boost_tlv),
426
427 SOC_DOUBLE_R_TLV("LINEOUT1 Volume", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
428 0, 63, 0, out_pga_tlv),
429 SOC_DOUBLE_R("LINEOUT1 Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
430 6, 1, 1),
431 SOC_DOUBLE_R("LINEOUT1 ZC Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
432 7, 1, 0),
433
434 SOC_DOUBLE_R_TLV("LINEOUT2 Volume",
435 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL,
436 0, 63, 0, out_pga_tlv),
437 SOC_DOUBLE_R("LINEOUT2 Switch",
438 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 6, 1, 1),
439 SOC_DOUBLE_R("LINEOUT2 ZC Switch",
440 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 7, 1, 0),
441 SOC_SINGLE("LINEOUT2 LP -12dB", WM8900_REG_LOUTMIXCTL1,
442 0, 1, 1),
443
444 };
445
446 static const struct snd_kcontrol_new wm8900_loutmix_controls[] = {
447 SOC_DAPM_SINGLE("LINPUT3 Bypass Switch", WM8900_REG_LOUTMIXCTL1, 7, 1, 0),
448 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 7, 1, 0),
449 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 7, 1, 0),
450 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 3, 1, 0),
451 SOC_DAPM_SINGLE("DACL Switch", WM8900_REG_LOUTMIXCTL1, 8, 1, 0),
452 };
453
454 static const struct snd_kcontrol_new wm8900_routmix_controls[] = {
455 SOC_DAPM_SINGLE("RINPUT3 Bypass Switch", WM8900_REG_ROUTMIXCTL1, 7, 1, 0),
456 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 3, 1, 0),
457 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 3, 1, 0),
458 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 7, 1, 0),
459 SOC_DAPM_SINGLE("DACR Switch", WM8900_REG_ROUTMIXCTL1, 8, 1, 0),
460 };
461
462 static const struct snd_kcontrol_new wm8900_linmix_controls[] = {
463 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INBOOSTMIX1, 2, 1, 1),
464 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INBOOSTMIX1, 6, 1, 1),
465 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 6, 1, 1),
466 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 6, 1, 0),
467 };
468
469 static const struct snd_kcontrol_new wm8900_rinmix_controls[] = {
470 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INBOOSTMIX2, 2, 1, 1),
471 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INBOOSTMIX2, 6, 1, 1),
472 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 2, 1, 1),
473 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 2, 1, 0),
474 };
475
476 static const struct snd_kcontrol_new wm8900_linpga_controls[] = {
477 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8900_REG_INCTL, 6, 1, 0),
478 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INCTL, 5, 1, 0),
479 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INCTL, 4, 1, 0),
480 };
481
482 static const struct snd_kcontrol_new wm8900_rinpga_controls[] = {
483 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8900_REG_INCTL, 2, 1, 0),
484 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INCTL, 1, 1, 0),
485 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INCTL, 0, 1, 0),
486 };
487
488 static const char *wm8900_lp_mux[] = { "Disabled", "Enabled" };
489
490 static SOC_ENUM_SINGLE_DECL(wm8900_lineout2_lp_mux,
491 WM8900_REG_LOUTMIXCTL1, 1, wm8900_lp_mux);
492
493 static const struct snd_kcontrol_new wm8900_lineout2_lp =
494 SOC_DAPM_ENUM("Route", wm8900_lineout2_lp_mux);
495
496 static const struct snd_soc_dapm_widget wm8900_dapm_widgets[] = {
497
498 /* Externally visible pins */
499 SND_SOC_DAPM_OUTPUT("LINEOUT1L"),
500 SND_SOC_DAPM_OUTPUT("LINEOUT1R"),
501 SND_SOC_DAPM_OUTPUT("LINEOUT2L"),
502 SND_SOC_DAPM_OUTPUT("LINEOUT2R"),
503 SND_SOC_DAPM_OUTPUT("HP_L"),
504 SND_SOC_DAPM_OUTPUT("HP_R"),
505
506 SND_SOC_DAPM_INPUT("RINPUT1"),
507 SND_SOC_DAPM_INPUT("LINPUT1"),
508 SND_SOC_DAPM_INPUT("RINPUT2"),
509 SND_SOC_DAPM_INPUT("LINPUT2"),
510 SND_SOC_DAPM_INPUT("RINPUT3"),
511 SND_SOC_DAPM_INPUT("LINPUT3"),
512 SND_SOC_DAPM_INPUT("AUX"),
513
514 SND_SOC_DAPM_VMID("VMID"),
515
516 /* Input */
517 SND_SOC_DAPM_MIXER("Left Input PGA", WM8900_REG_POWER2, 3, 0,
518 wm8900_linpga_controls,
519 ARRAY_SIZE(wm8900_linpga_controls)),
520 SND_SOC_DAPM_MIXER("Right Input PGA", WM8900_REG_POWER2, 2, 0,
521 wm8900_rinpga_controls,
522 ARRAY_SIZE(wm8900_rinpga_controls)),
523
524 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8900_REG_POWER2, 5, 0,
525 wm8900_linmix_controls,
526 ARRAY_SIZE(wm8900_linmix_controls)),
527 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8900_REG_POWER2, 4, 0,
528 wm8900_rinmix_controls,
529 ARRAY_SIZE(wm8900_rinmix_controls)),
530
531 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8900_REG_POWER1, 4, 0, NULL, 0),
532
533 SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8900_REG_POWER2, 1, 0),
534 SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8900_REG_POWER2, 0, 0),
535
536 /* Output */
537 SND_SOC_DAPM_DAC("DACL", "Left HiFi Playback", WM8900_REG_POWER3, 1, 0),
538 SND_SOC_DAPM_DAC("DACR", "Right HiFi Playback", WM8900_REG_POWER3, 0, 0),
539
540 SND_SOC_DAPM_PGA_E("Headphone Amplifier", WM8900_REG_POWER3, 7, 0, NULL, 0,
541 wm8900_hp_event,
542 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
543 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
544
545 SND_SOC_DAPM_PGA("LINEOUT1L PGA", WM8900_REG_POWER2, 8, 0, NULL, 0),
546 SND_SOC_DAPM_PGA("LINEOUT1R PGA", WM8900_REG_POWER2, 7, 0, NULL, 0),
547
548 SND_SOC_DAPM_MUX("LINEOUT2 LP", SND_SOC_NOPM, 0, 0, &wm8900_lineout2_lp),
549 SND_SOC_DAPM_PGA("LINEOUT2L PGA", WM8900_REG_POWER3, 6, 0, NULL, 0),
550 SND_SOC_DAPM_PGA("LINEOUT2R PGA", WM8900_REG_POWER3, 5, 0, NULL, 0),
551
552 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8900_REG_POWER3, 3, 0,
553 wm8900_loutmix_controls,
554 ARRAY_SIZE(wm8900_loutmix_controls)),
555 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8900_REG_POWER3, 2, 0,
556 wm8900_routmix_controls,
557 ARRAY_SIZE(wm8900_routmix_controls)),
558 };
559
560 /* Target, Path, Source */
561 static const struct snd_soc_dapm_route wm8900_dapm_routes[] = {
562 /* Inputs */
563 {"Left Input PGA", "LINPUT1 Switch", "LINPUT1"},
564 {"Left Input PGA", "LINPUT2 Switch", "LINPUT2"},
565 {"Left Input PGA", "LINPUT3 Switch", "LINPUT3"},
566
567 {"Right Input PGA", "RINPUT1 Switch", "RINPUT1"},
568 {"Right Input PGA", "RINPUT2 Switch", "RINPUT2"},
569 {"Right Input PGA", "RINPUT3 Switch", "RINPUT3"},
570
571 {"Left Input Mixer", "LINPUT2 Switch", "LINPUT2"},
572 {"Left Input Mixer", "LINPUT3 Switch", "LINPUT3"},
573 {"Left Input Mixer", "AUX Switch", "AUX"},
574 {"Left Input Mixer", "Input PGA Switch", "Left Input PGA"},
575
576 {"Right Input Mixer", "RINPUT2 Switch", "RINPUT2"},
577 {"Right Input Mixer", "RINPUT3 Switch", "RINPUT3"},
578 {"Right Input Mixer", "AUX Switch", "AUX"},
579 {"Right Input Mixer", "Input PGA Switch", "Right Input PGA"},
580
581 {"ADCL", NULL, "Left Input Mixer"},
582 {"ADCR", NULL, "Right Input Mixer"},
583
584 /* Outputs */
585 {"LINEOUT1L", NULL, "LINEOUT1L PGA"},
586 {"LINEOUT1L PGA", NULL, "Left Output Mixer"},
587 {"LINEOUT1R", NULL, "LINEOUT1R PGA"},
588 {"LINEOUT1R PGA", NULL, "Right Output Mixer"},
589
590 {"LINEOUT2L PGA", NULL, "Left Output Mixer"},
591 {"LINEOUT2 LP", "Disabled", "LINEOUT2L PGA"},
592 {"LINEOUT2 LP", "Enabled", "Left Output Mixer"},
593 {"LINEOUT2L", NULL, "LINEOUT2 LP"},
594
595 {"LINEOUT2R PGA", NULL, "Right Output Mixer"},
596 {"LINEOUT2 LP", "Disabled", "LINEOUT2R PGA"},
597 {"LINEOUT2 LP", "Enabled", "Right Output Mixer"},
598 {"LINEOUT2R", NULL, "LINEOUT2 LP"},
599
600 {"Left Output Mixer", "LINPUT3 Bypass Switch", "LINPUT3"},
601 {"Left Output Mixer", "AUX Bypass Switch", "AUX"},
602 {"Left Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
603 {"Left Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
604 {"Left Output Mixer", "DACL Switch", "DACL"},
605
606 {"Right Output Mixer", "RINPUT3 Bypass Switch", "RINPUT3"},
607 {"Right Output Mixer", "AUX Bypass Switch", "AUX"},
608 {"Right Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
609 {"Right Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
610 {"Right Output Mixer", "DACR Switch", "DACR"},
611
612 /* Note that the headphone output stage needs to be connected
613 * externally to LINEOUT2 via DC blocking capacitors. Other
614 * configurations are not supported.
615 *
616 * Note also that left and right headphone paths are treated as a
617 * mono path.
618 */
619 {"Headphone Amplifier", NULL, "LINEOUT2 LP"},
620 {"Headphone Amplifier", NULL, "LINEOUT2 LP"},
621 {"HP_L", NULL, "Headphone Amplifier"},
622 {"HP_R", NULL, "Headphone Amplifier"},
623 };
624
wm8900_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)625 static int wm8900_hw_params(struct snd_pcm_substream *substream,
626 struct snd_pcm_hw_params *params,
627 struct snd_soc_dai *dai)
628 {
629 struct snd_soc_component *component = dai->component;
630 u16 reg;
631
632 reg = snd_soc_component_read(component, WM8900_REG_AUDIO1) & ~0x60;
633
634 switch (params_width(params)) {
635 case 16:
636 break;
637 case 20:
638 reg |= 0x20;
639 break;
640 case 24:
641 reg |= 0x40;
642 break;
643 case 32:
644 reg |= 0x60;
645 break;
646 default:
647 return -EINVAL;
648 }
649
650 snd_soc_component_write(component, WM8900_REG_AUDIO1, reg);
651
652 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
653 reg = snd_soc_component_read(component, WM8900_REG_DACCTRL);
654
655 if (params_rate(params) <= 24000)
656 reg |= WM8900_REG_DACCTRL_DAC_SB_FILT;
657 else
658 reg &= ~WM8900_REG_DACCTRL_DAC_SB_FILT;
659
660 snd_soc_component_write(component, WM8900_REG_DACCTRL, reg);
661 }
662
663 return 0;
664 }
665
666 /* FLL divisors */
667 struct _fll_div {
668 u16 fll_ratio;
669 u16 fllclk_div;
670 u16 fll_slow_lock_ref;
671 u16 n;
672 u16 k;
673 };
674
675 /* The size in bits of the FLL divide multiplied by 10
676 * to allow rounding later */
677 #define FIXED_FLL_SIZE ((1 << 16) * 10)
678
fll_factors(struct _fll_div * fll_div,unsigned int Fref,unsigned int Fout)679 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
680 unsigned int Fout)
681 {
682 u64 Kpart;
683 unsigned int K, Ndiv, Nmod, target;
684 unsigned int div;
685
686 if (WARN_ON(!Fout))
687 return -EINVAL;
688
689 /* The FLL must run at 90-100MHz which is then scaled down to
690 * the output value by FLLCLK_DIV. */
691 target = Fout;
692 div = 1;
693 while (target < 90000000) {
694 div *= 2;
695 target *= 2;
696 }
697
698 if (target > 100000000)
699 printk(KERN_WARNING "wm8900: FLL rate %u out of range, Fref=%u"
700 " Fout=%u\n", target, Fref, Fout);
701 if (div > 32) {
702 printk(KERN_ERR "wm8900: Invalid FLL division rate %u, "
703 "Fref=%u, Fout=%u, target=%u\n",
704 div, Fref, Fout, target);
705 return -EINVAL;
706 }
707
708 fll_div->fllclk_div = div >> 2;
709
710 if (Fref < 48000)
711 fll_div->fll_slow_lock_ref = 1;
712 else
713 fll_div->fll_slow_lock_ref = 0;
714
715 Ndiv = target / Fref;
716
717 if (Fref < 1000000)
718 fll_div->fll_ratio = 8;
719 else
720 fll_div->fll_ratio = 1;
721
722 fll_div->n = Ndiv / fll_div->fll_ratio;
723 Nmod = (target / fll_div->fll_ratio) % Fref;
724
725 /* Calculate fractional part - scale up so we can round. */
726 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
727
728 do_div(Kpart, Fref);
729
730 K = Kpart & 0xFFFFFFFF;
731
732 if ((K % 10) >= 5)
733 K += 5;
734
735 /* Move down to proper range now rounding is done */
736 fll_div->k = K / 10;
737
738 if (WARN_ON(target != Fout * (fll_div->fllclk_div << 2)) ||
739 WARN_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n))
740 return -EINVAL;
741
742 return 0;
743 }
744
wm8900_set_fll(struct snd_soc_component * component,int fll_id,unsigned int freq_in,unsigned int freq_out)745 static int wm8900_set_fll(struct snd_soc_component *component,
746 int fll_id, unsigned int freq_in, unsigned int freq_out)
747 {
748 struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component);
749 struct _fll_div fll_div;
750
751 if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out)
752 return 0;
753
754 /* The digital side should be disabled during any change. */
755 snd_soc_component_update_bits(component, WM8900_REG_POWER1,
756 WM8900_REG_POWER1_FLL_ENA, 0);
757
758 /* Disable the FLL? */
759 if (!freq_in || !freq_out) {
760 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1,
761 WM8900_REG_CLOCKING1_MCLK_SRC, 0);
762 snd_soc_component_update_bits(component, WM8900_REG_FLLCTL1,
763 WM8900_REG_FLLCTL1_OSC_ENA, 0);
764 wm8900->fll_in = freq_in;
765 wm8900->fll_out = freq_out;
766
767 return 0;
768 }
769
770 if (fll_factors(&fll_div, freq_in, freq_out) != 0)
771 goto reenable;
772
773 wm8900->fll_in = freq_in;
774 wm8900->fll_out = freq_out;
775
776 /* The osclilator *MUST* be enabled before we enable the
777 * digital circuit. */
778 snd_soc_component_write(component, WM8900_REG_FLLCTL1,
779 fll_div.fll_ratio | WM8900_REG_FLLCTL1_OSC_ENA);
780
781 snd_soc_component_write(component, WM8900_REG_FLLCTL4, fll_div.n >> 5);
782 snd_soc_component_write(component, WM8900_REG_FLLCTL5,
783 (fll_div.fllclk_div << 6) | (fll_div.n & 0x1f));
784
785 if (fll_div.k) {
786 snd_soc_component_write(component, WM8900_REG_FLLCTL2,
787 (fll_div.k >> 8) | 0x100);
788 snd_soc_component_write(component, WM8900_REG_FLLCTL3, fll_div.k & 0xff);
789 } else
790 snd_soc_component_write(component, WM8900_REG_FLLCTL2, 0);
791
792 if (fll_div.fll_slow_lock_ref)
793 snd_soc_component_write(component, WM8900_REG_FLLCTL6,
794 WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF);
795 else
796 snd_soc_component_write(component, WM8900_REG_FLLCTL6, 0);
797
798 snd_soc_component_update_bits(component, WM8900_REG_POWER1,
799 WM8900_REG_POWER1_FLL_ENA,
800 WM8900_REG_POWER1_FLL_ENA);
801
802 reenable:
803 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1,
804 WM8900_REG_CLOCKING1_MCLK_SRC,
805 WM8900_REG_CLOCKING1_MCLK_SRC);
806 return 0;
807 }
808
wm8900_set_dai_pll(struct snd_soc_dai * codec_dai,int pll_id,int source,unsigned int freq_in,unsigned int freq_out)809 static int wm8900_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
810 int source, unsigned int freq_in, unsigned int freq_out)
811 {
812 return wm8900_set_fll(codec_dai->component, pll_id, freq_in, freq_out);
813 }
814
wm8900_set_dai_clkdiv(struct snd_soc_dai * codec_dai,int div_id,int div)815 static int wm8900_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
816 int div_id, int div)
817 {
818 struct snd_soc_component *component = codec_dai->component;
819
820 switch (div_id) {
821 case WM8900_BCLK_DIV:
822 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1,
823 WM8900_REG_CLOCKING1_BCLK_MASK, div);
824 break;
825 case WM8900_OPCLK_DIV:
826 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1,
827 WM8900_REG_CLOCKING1_OPCLK_MASK, div);
828 break;
829 case WM8900_DAC_LRCLK:
830 snd_soc_component_update_bits(component, WM8900_REG_AUDIO4,
831 WM8900_LRC_MASK, div);
832 break;
833 case WM8900_ADC_LRCLK:
834 snd_soc_component_update_bits(component, WM8900_REG_AUDIO3,
835 WM8900_LRC_MASK, div);
836 break;
837 case WM8900_DAC_CLKDIV:
838 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING2,
839 WM8900_REG_CLOCKING2_DAC_CLKDIV, div);
840 break;
841 case WM8900_ADC_CLKDIV:
842 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING2,
843 WM8900_REG_CLOCKING2_ADC_CLKDIV, div);
844 break;
845 case WM8900_LRCLK_MODE:
846 snd_soc_component_update_bits(component, WM8900_REG_DACCTRL,
847 WM8900_REG_DACCTRL_AIF_LRCLKRATE, div);
848 break;
849 default:
850 return -EINVAL;
851 }
852
853 return 0;
854 }
855
856
wm8900_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)857 static int wm8900_set_dai_fmt(struct snd_soc_dai *codec_dai,
858 unsigned int fmt)
859 {
860 struct snd_soc_component *component = codec_dai->component;
861 unsigned int clocking1, aif1, aif3, aif4;
862
863 clocking1 = snd_soc_component_read(component, WM8900_REG_CLOCKING1);
864 aif1 = snd_soc_component_read(component, WM8900_REG_AUDIO1);
865 aif3 = snd_soc_component_read(component, WM8900_REG_AUDIO3);
866 aif4 = snd_soc_component_read(component, WM8900_REG_AUDIO4);
867
868 /* set master/slave audio interface */
869 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
870 case SND_SOC_DAIFMT_CBS_CFS:
871 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
872 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
873 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
874 break;
875 case SND_SOC_DAIFMT_CBS_CFM:
876 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
877 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
878 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
879 break;
880 case SND_SOC_DAIFMT_CBM_CFM:
881 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
882 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
883 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
884 break;
885 case SND_SOC_DAIFMT_CBM_CFS:
886 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
887 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
888 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
889 break;
890 default:
891 return -EINVAL;
892 }
893
894 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
895 case SND_SOC_DAIFMT_DSP_A:
896 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
897 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
898 break;
899 case SND_SOC_DAIFMT_DSP_B:
900 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
901 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
902 break;
903 case SND_SOC_DAIFMT_I2S:
904 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
905 aif1 |= 0x10;
906 break;
907 case SND_SOC_DAIFMT_RIGHT_J:
908 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
909 break;
910 case SND_SOC_DAIFMT_LEFT_J:
911 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
912 aif1 |= 0x8;
913 break;
914 default:
915 return -EINVAL;
916 }
917
918 /* Clock inversion */
919 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
920 case SND_SOC_DAIFMT_DSP_A:
921 case SND_SOC_DAIFMT_DSP_B:
922 /* frame inversion not valid for DSP modes */
923 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
924 case SND_SOC_DAIFMT_NB_NF:
925 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
926 break;
927 case SND_SOC_DAIFMT_IB_NF:
928 aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
929 break;
930 default:
931 return -EINVAL;
932 }
933 break;
934 case SND_SOC_DAIFMT_I2S:
935 case SND_SOC_DAIFMT_RIGHT_J:
936 case SND_SOC_DAIFMT_LEFT_J:
937 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
938 case SND_SOC_DAIFMT_NB_NF:
939 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
940 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
941 break;
942 case SND_SOC_DAIFMT_IB_IF:
943 aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
944 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
945 break;
946 case SND_SOC_DAIFMT_IB_NF:
947 aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
948 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
949 break;
950 case SND_SOC_DAIFMT_NB_IF:
951 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
952 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
953 break;
954 default:
955 return -EINVAL;
956 }
957 break;
958 default:
959 return -EINVAL;
960 }
961
962 snd_soc_component_write(component, WM8900_REG_CLOCKING1, clocking1);
963 snd_soc_component_write(component, WM8900_REG_AUDIO1, aif1);
964 snd_soc_component_write(component, WM8900_REG_AUDIO3, aif3);
965 snd_soc_component_write(component, WM8900_REG_AUDIO4, aif4);
966
967 return 0;
968 }
969
wm8900_mute(struct snd_soc_dai * codec_dai,int mute,int direction)970 static int wm8900_mute(struct snd_soc_dai *codec_dai, int mute, int direction)
971 {
972 struct snd_soc_component *component = codec_dai->component;
973 u16 reg;
974
975 reg = snd_soc_component_read(component, WM8900_REG_DACCTRL);
976
977 if (mute)
978 reg |= WM8900_REG_DACCTRL_MUTE;
979 else
980 reg &= ~WM8900_REG_DACCTRL_MUTE;
981
982 snd_soc_component_write(component, WM8900_REG_DACCTRL, reg);
983
984 return 0;
985 }
986
987 #define WM8900_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
988 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
989 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
990
991 #define WM8900_PCM_FORMATS \
992 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
993 SNDRV_PCM_FMTBIT_S24_LE)
994
995 static const struct snd_soc_dai_ops wm8900_dai_ops = {
996 .hw_params = wm8900_hw_params,
997 .set_clkdiv = wm8900_set_dai_clkdiv,
998 .set_pll = wm8900_set_dai_pll,
999 .set_fmt = wm8900_set_dai_fmt,
1000 .mute_stream = wm8900_mute,
1001 .no_capture_mute = 1,
1002 };
1003
1004 static struct snd_soc_dai_driver wm8900_dai = {
1005 .name = "wm8900-hifi",
1006 .playback = {
1007 .stream_name = "HiFi Playback",
1008 .channels_min = 1,
1009 .channels_max = 2,
1010 .rates = WM8900_RATES,
1011 .formats = WM8900_PCM_FORMATS,
1012 },
1013 .capture = {
1014 .stream_name = "HiFi Capture",
1015 .channels_min = 1,
1016 .channels_max = 2,
1017 .rates = WM8900_RATES,
1018 .formats = WM8900_PCM_FORMATS,
1019 },
1020 .ops = &wm8900_dai_ops,
1021 };
1022
wm8900_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)1023 static int wm8900_set_bias_level(struct snd_soc_component *component,
1024 enum snd_soc_bias_level level)
1025 {
1026 u16 reg;
1027
1028 switch (level) {
1029 case SND_SOC_BIAS_ON:
1030 /* Enable thermal shutdown */
1031 snd_soc_component_update_bits(component, WM8900_REG_GPIO,
1032 WM8900_REG_GPIO_TEMP_ENA,
1033 WM8900_REG_GPIO_TEMP_ENA);
1034 snd_soc_component_update_bits(component, WM8900_REG_ADDCTL,
1035 WM8900_REG_ADDCTL_TEMP_SD,
1036 WM8900_REG_ADDCTL_TEMP_SD);
1037 break;
1038
1039 case SND_SOC_BIAS_PREPARE:
1040 break;
1041
1042 case SND_SOC_BIAS_STANDBY:
1043 /* Charge capacitors if initial power up */
1044 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
1045 /* STARTUP_BIAS_ENA on */
1046 snd_soc_component_write(component, WM8900_REG_POWER1,
1047 WM8900_REG_POWER1_STARTUP_BIAS_ENA);
1048
1049 /* Startup bias mode */
1050 snd_soc_component_write(component, WM8900_REG_ADDCTL,
1051 WM8900_REG_ADDCTL_BIAS_SRC |
1052 WM8900_REG_ADDCTL_VMID_SOFTST);
1053
1054 /* VMID 2x50k */
1055 snd_soc_component_write(component, WM8900_REG_POWER1,
1056 WM8900_REG_POWER1_STARTUP_BIAS_ENA | 0x1);
1057
1058 /* Allow capacitors to charge */
1059 schedule_timeout_interruptible(msecs_to_jiffies(400));
1060
1061 /* Enable bias */
1062 snd_soc_component_write(component, WM8900_REG_POWER1,
1063 WM8900_REG_POWER1_STARTUP_BIAS_ENA |
1064 WM8900_REG_POWER1_BIAS_ENA | 0x1);
1065
1066 snd_soc_component_write(component, WM8900_REG_ADDCTL, 0);
1067
1068 snd_soc_component_write(component, WM8900_REG_POWER1,
1069 WM8900_REG_POWER1_BIAS_ENA | 0x1);
1070 }
1071
1072 reg = snd_soc_component_read(component, WM8900_REG_POWER1);
1073 snd_soc_component_write(component, WM8900_REG_POWER1,
1074 (reg & WM8900_REG_POWER1_FLL_ENA) |
1075 WM8900_REG_POWER1_BIAS_ENA | 0x1);
1076 snd_soc_component_write(component, WM8900_REG_POWER2,
1077 WM8900_REG_POWER2_SYSCLK_ENA);
1078 snd_soc_component_write(component, WM8900_REG_POWER3, 0);
1079 break;
1080
1081 case SND_SOC_BIAS_OFF:
1082 /* Startup bias enable */
1083 reg = snd_soc_component_read(component, WM8900_REG_POWER1);
1084 snd_soc_component_write(component, WM8900_REG_POWER1,
1085 reg & WM8900_REG_POWER1_STARTUP_BIAS_ENA);
1086 snd_soc_component_write(component, WM8900_REG_ADDCTL,
1087 WM8900_REG_ADDCTL_BIAS_SRC |
1088 WM8900_REG_ADDCTL_VMID_SOFTST);
1089
1090 /* Discharge caps */
1091 snd_soc_component_write(component, WM8900_REG_POWER1,
1092 WM8900_REG_POWER1_STARTUP_BIAS_ENA);
1093 schedule_timeout_interruptible(msecs_to_jiffies(500));
1094
1095 /* Remove clamp */
1096 snd_soc_component_write(component, WM8900_REG_HPCTL1, 0);
1097
1098 /* Power down */
1099 snd_soc_component_write(component, WM8900_REG_ADDCTL, 0);
1100 snd_soc_component_write(component, WM8900_REG_POWER1, 0);
1101 snd_soc_component_write(component, WM8900_REG_POWER2, 0);
1102 snd_soc_component_write(component, WM8900_REG_POWER3, 0);
1103
1104 /* Need to let things settle before stopping the clock
1105 * to ensure that restart works, see "Stopping the
1106 * master clock" in the datasheet. */
1107 schedule_timeout_interruptible(msecs_to_jiffies(1));
1108 snd_soc_component_write(component, WM8900_REG_POWER2,
1109 WM8900_REG_POWER2_SYSCLK_ENA);
1110 break;
1111 }
1112 return 0;
1113 }
1114
wm8900_suspend(struct snd_soc_component * component)1115 static int wm8900_suspend(struct snd_soc_component *component)
1116 {
1117 struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component);
1118 int fll_out = wm8900->fll_out;
1119 int fll_in = wm8900->fll_in;
1120 int ret;
1121
1122 /* Stop the FLL in an orderly fashion */
1123 ret = wm8900_set_fll(component, 0, 0, 0);
1124 if (ret != 0) {
1125 dev_err(component->dev, "Failed to stop FLL\n");
1126 return ret;
1127 }
1128
1129 wm8900->fll_out = fll_out;
1130 wm8900->fll_in = fll_in;
1131
1132 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
1133
1134 return 0;
1135 }
1136
wm8900_resume(struct snd_soc_component * component)1137 static int wm8900_resume(struct snd_soc_component *component)
1138 {
1139 struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component);
1140 int ret;
1141
1142 wm8900_reset(component);
1143
1144 ret = regcache_sync(wm8900->regmap);
1145 if (ret != 0) {
1146 dev_err(component->dev, "Failed to restore cache: %d\n", ret);
1147 return ret;
1148 }
1149
1150 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
1151
1152 /* Restart the FLL? */
1153 if (wm8900->fll_out) {
1154 int fll_out = wm8900->fll_out;
1155 int fll_in = wm8900->fll_in;
1156
1157 wm8900->fll_in = 0;
1158 wm8900->fll_out = 0;
1159
1160 ret = wm8900_set_fll(component, 0, fll_in, fll_out);
1161 if (ret != 0) {
1162 dev_err(component->dev, "Failed to restart FLL\n");
1163 return ret;
1164 }
1165 }
1166
1167 return 0;
1168 }
1169
wm8900_probe(struct snd_soc_component * component)1170 static int wm8900_probe(struct snd_soc_component *component)
1171 {
1172 int reg;
1173
1174 reg = snd_soc_component_read(component, WM8900_REG_ID);
1175 if (reg != 0x8900) {
1176 dev_err(component->dev, "Device is not a WM8900 - ID %x\n", reg);
1177 return -ENODEV;
1178 }
1179
1180 wm8900_reset(component);
1181
1182 /* Turn the chip on */
1183 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
1184
1185 /* Latch the volume update bits */
1186 snd_soc_component_update_bits(component, WM8900_REG_LINVOL, 0x100, 0x100);
1187 snd_soc_component_update_bits(component, WM8900_REG_RINVOL, 0x100, 0x100);
1188 snd_soc_component_update_bits(component, WM8900_REG_LOUT1CTL, 0x100, 0x100);
1189 snd_soc_component_update_bits(component, WM8900_REG_ROUT1CTL, 0x100, 0x100);
1190 snd_soc_component_update_bits(component, WM8900_REG_LOUT2CTL, 0x100, 0x100);
1191 snd_soc_component_update_bits(component, WM8900_REG_ROUT2CTL, 0x100, 0x100);
1192 snd_soc_component_update_bits(component, WM8900_REG_LDAC_DV, 0x100, 0x100);
1193 snd_soc_component_update_bits(component, WM8900_REG_RDAC_DV, 0x100, 0x100);
1194 snd_soc_component_update_bits(component, WM8900_REG_LADC_DV, 0x100, 0x100);
1195 snd_soc_component_update_bits(component, WM8900_REG_RADC_DV, 0x100, 0x100);
1196
1197 /* Set the DAC and mixer output bias */
1198 snd_soc_component_write(component, WM8900_REG_OUTBIASCTL, 0x81);
1199
1200 return 0;
1201 }
1202
1203 static const struct snd_soc_component_driver soc_component_dev_wm8900 = {
1204 .probe = wm8900_probe,
1205 .suspend = wm8900_suspend,
1206 .resume = wm8900_resume,
1207 .set_bias_level = wm8900_set_bias_level,
1208 .controls = wm8900_snd_controls,
1209 .num_controls = ARRAY_SIZE(wm8900_snd_controls),
1210 .dapm_widgets = wm8900_dapm_widgets,
1211 .num_dapm_widgets = ARRAY_SIZE(wm8900_dapm_widgets),
1212 .dapm_routes = wm8900_dapm_routes,
1213 .num_dapm_routes = ARRAY_SIZE(wm8900_dapm_routes),
1214 .idle_bias_on = 1,
1215 .use_pmdown_time = 1,
1216 .endianness = 1,
1217 };
1218
1219 static const struct regmap_config wm8900_regmap = {
1220 .reg_bits = 8,
1221 .val_bits = 16,
1222 .max_register = WM8900_MAXREG,
1223
1224 .reg_defaults = wm8900_reg_defaults,
1225 .num_reg_defaults = ARRAY_SIZE(wm8900_reg_defaults),
1226 .cache_type = REGCACHE_MAPLE,
1227
1228 .volatile_reg = wm8900_volatile_register,
1229 };
1230
1231 #if defined(CONFIG_SPI_MASTER)
wm8900_spi_probe(struct spi_device * spi)1232 static int wm8900_spi_probe(struct spi_device *spi)
1233 {
1234 struct wm8900_priv *wm8900;
1235 int ret;
1236
1237 wm8900 = devm_kzalloc(&spi->dev, sizeof(struct wm8900_priv),
1238 GFP_KERNEL);
1239 if (wm8900 == NULL)
1240 return -ENOMEM;
1241
1242 wm8900->regmap = devm_regmap_init_spi(spi, &wm8900_regmap);
1243 if (IS_ERR(wm8900->regmap))
1244 return PTR_ERR(wm8900->regmap);
1245
1246 spi_set_drvdata(spi, wm8900);
1247
1248 ret = devm_snd_soc_register_component(&spi->dev,
1249 &soc_component_dev_wm8900, &wm8900_dai, 1);
1250
1251 return ret;
1252 }
1253
1254 static struct spi_driver wm8900_spi_driver = {
1255 .driver = {
1256 .name = "wm8900",
1257 },
1258 .probe = wm8900_spi_probe,
1259 };
1260 #endif /* CONFIG_SPI_MASTER */
1261
1262 #if IS_ENABLED(CONFIG_I2C)
wm8900_i2c_probe(struct i2c_client * i2c)1263 static int wm8900_i2c_probe(struct i2c_client *i2c)
1264 {
1265 struct wm8900_priv *wm8900;
1266 int ret;
1267
1268 wm8900 = devm_kzalloc(&i2c->dev, sizeof(struct wm8900_priv),
1269 GFP_KERNEL);
1270 if (wm8900 == NULL)
1271 return -ENOMEM;
1272
1273 wm8900->regmap = devm_regmap_init_i2c(i2c, &wm8900_regmap);
1274 if (IS_ERR(wm8900->regmap))
1275 return PTR_ERR(wm8900->regmap);
1276
1277 i2c_set_clientdata(i2c, wm8900);
1278
1279 ret = devm_snd_soc_register_component(&i2c->dev,
1280 &soc_component_dev_wm8900, &wm8900_dai, 1);
1281
1282 return ret;
1283 }
1284
wm8900_i2c_remove(struct i2c_client * client)1285 static void wm8900_i2c_remove(struct i2c_client *client)
1286 {}
1287
1288 static const struct i2c_device_id wm8900_i2c_id[] = {
1289 { "wm8900" },
1290 { }
1291 };
1292 MODULE_DEVICE_TABLE(i2c, wm8900_i2c_id);
1293
1294 static struct i2c_driver wm8900_i2c_driver = {
1295 .driver = {
1296 .name = "wm8900",
1297 },
1298 .probe = wm8900_i2c_probe,
1299 .remove = wm8900_i2c_remove,
1300 .id_table = wm8900_i2c_id,
1301 };
1302 #endif
1303
wm8900_modinit(void)1304 static int __init wm8900_modinit(void)
1305 {
1306 int ret = 0;
1307 #if IS_ENABLED(CONFIG_I2C)
1308 ret = i2c_add_driver(&wm8900_i2c_driver);
1309 if (ret != 0) {
1310 printk(KERN_ERR "Failed to register wm8900 I2C driver: %d\n",
1311 ret);
1312 }
1313 #endif
1314 #if defined(CONFIG_SPI_MASTER)
1315 ret = spi_register_driver(&wm8900_spi_driver);
1316 if (ret != 0) {
1317 printk(KERN_ERR "Failed to register wm8900 SPI driver: %d\n",
1318 ret);
1319 }
1320 #endif
1321 return ret;
1322 }
1323 module_init(wm8900_modinit);
1324
wm8900_exit(void)1325 static void __exit wm8900_exit(void)
1326 {
1327 #if IS_ENABLED(CONFIG_I2C)
1328 i2c_del_driver(&wm8900_i2c_driver);
1329 #endif
1330 #if defined(CONFIG_SPI_MASTER)
1331 spi_unregister_driver(&wm8900_spi_driver);
1332 #endif
1333 }
1334 module_exit(wm8900_exit);
1335
1336 MODULE_DESCRIPTION("ASoC WM8900 driver");
1337 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
1338 MODULE_LICENSE("GPL");
1339