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driver core: bus: use to_subsys_private and to_device_private_bus
[linux/fpc-iii.git] / sound / soc / codecs / sta32x.c
bloba9844b2ac829d03ae4142a69b6b815fc9df02f44
1 /*
2 * Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system
3 *
4 * Copyright: 2011 Raumfeld GmbH
5 * Author: Johannes Stezenbach <js@sig21.net>
6 *
7 * based on code from:
8 * Wolfson Microelectronics PLC.
9 * Mark Brown <broonie@opensource.wolfsonmicro.com>
10 * Freescale Semiconductor, Inc.
11 * Timur Tabi <timur@freescale.com>
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 */
18
19 #define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__
20
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/pm.h>
26 #include <linux/i2c.h>
27 #include <linux/of_device.h>
28 #include <linux/of_gpio.h>
29 #include <linux/regmap.h>
30 #include <linux/regulator/consumer.h>
31 #include <linux/gpio/consumer.h>
32 #include <linux/slab.h>
33 #include <linux/workqueue.h>
34 #include <sound/core.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/soc.h>
38 #include <sound/soc-dapm.h>
39 #include <sound/initval.h>
40 #include <sound/tlv.h>
41
42 #include <sound/sta32x.h>
43 #include "sta32x.h"
44
45 #define STA32X_RATES (SNDRV_PCM_RATE_32000 | \
46 SNDRV_PCM_RATE_44100 | \
47 SNDRV_PCM_RATE_48000 | \
48 SNDRV_PCM_RATE_88200 | \
49 SNDRV_PCM_RATE_96000 | \
50 SNDRV_PCM_RATE_176400 | \
51 SNDRV_PCM_RATE_192000)
52
53 #define STA32X_FORMATS \
54 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
55 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
56 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
57 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
58 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \
59 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
60
61 /* Power-up register defaults */
62 static const struct reg_default sta32x_regs[] = {
63 { 0x0, 0x63 },
64 { 0x1, 0x80 },
65 { 0x2, 0xc2 },
66 { 0x3, 0x40 },
67 { 0x4, 0xc2 },
68 { 0x5, 0x5c },
69 { 0x6, 0x10 },
70 { 0x7, 0xff },
71 { 0x8, 0x60 },
72 { 0x9, 0x60 },
73 { 0xa, 0x60 },
74 { 0xb, 0x80 },
75 { 0xc, 0x00 },
76 { 0xd, 0x00 },
77 { 0xe, 0x00 },
78 { 0xf, 0x40 },
79 { 0x10, 0x80 },
80 { 0x11, 0x77 },
81 { 0x12, 0x6a },
82 { 0x13, 0x69 },
83 { 0x14, 0x6a },
84 { 0x15, 0x69 },
85 { 0x16, 0x00 },
86 { 0x17, 0x00 },
87 { 0x18, 0x00 },
88 { 0x19, 0x00 },
89 { 0x1a, 0x00 },
90 { 0x1b, 0x00 },
91 { 0x1c, 0x00 },
92 { 0x1d, 0x00 },
93 { 0x1e, 0x00 },
94 { 0x1f, 0x00 },
95 { 0x20, 0x00 },
96 { 0x21, 0x00 },
97 { 0x22, 0x00 },
98 { 0x23, 0x00 },
99 { 0x24, 0x00 },
100 { 0x25, 0x00 },
101 { 0x26, 0x00 },
102 { 0x27, 0x2d },
103 { 0x28, 0xc0 },
104 { 0x2b, 0x00 },
105 { 0x2c, 0x0c },
106 };
107
108 static const struct regmap_range sta32x_write_regs_range[] = {
109 regmap_reg_range(STA32X_CONFA, STA32X_FDRC2),
110 };
111
112 static const struct regmap_range sta32x_read_regs_range[] = {
113 regmap_reg_range(STA32X_CONFA, STA32X_FDRC2),
114 };
115
116 static const struct regmap_range sta32x_volatile_regs_range[] = {
117 regmap_reg_range(STA32X_CFADDR2, STA32X_CFUD),
118 };
119
120 static const struct regmap_access_table sta32x_write_regs = {
121 .yes_ranges = sta32x_write_regs_range,
122 .n_yes_ranges = ARRAY_SIZE(sta32x_write_regs_range),
123 };
124
125 static const struct regmap_access_table sta32x_read_regs = {
126 .yes_ranges = sta32x_read_regs_range,
127 .n_yes_ranges = ARRAY_SIZE(sta32x_read_regs_range),
128 };
129
130 static const struct regmap_access_table sta32x_volatile_regs = {
131 .yes_ranges = sta32x_volatile_regs_range,
132 .n_yes_ranges = ARRAY_SIZE(sta32x_volatile_regs_range),
133 };
134
135 /* regulator power supply names */
136 static const char *sta32x_supply_names[] = {
137 "Vdda", /* analog supply, 3.3VV */
138 "Vdd3", /* digital supply, 3.3V */
139 "Vcc" /* power amp spply, 10V - 36V */
140 };
141
142 /* codec private data */
143 struct sta32x_priv {
144 struct regmap *regmap;
145 struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)];
146 struct snd_soc_codec *codec;
147 struct sta32x_platform_data *pdata;
148
149 unsigned int mclk;
150 unsigned int format;
151
152 u32 coef_shadow[STA32X_COEF_COUNT];
153 struct delayed_work watchdog_work;
154 int shutdown;
155 struct gpio_desc *gpiod_nreset;
156 struct mutex coeff_lock;
157 };
158
159 static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
160 static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1);
161 static const DECLARE_TLV_DB_SCALE(tone_tlv, -120, 200, 0);
162
163 static const char *sta32x_drc_ac[] = {
164 "Anti-Clipping", "Dynamic Range Compression" };
165 static const char *sta32x_auto_eq_mode[] = {
166 "User", "Preset", "Loudness" };
167 static const char *sta32x_auto_gc_mode[] = {
168 "User", "AC no clipping", "AC limited clipping (10%)",
169 "DRC nighttime listening mode" };
170 static const char *sta32x_auto_xo_mode[] = {
171 "User", "80Hz", "100Hz", "120Hz", "140Hz", "160Hz", "180Hz", "200Hz",
172 "220Hz", "240Hz", "260Hz", "280Hz", "300Hz", "320Hz", "340Hz", "360Hz" };
173 static const char *sta32x_preset_eq_mode[] = {
174 "Flat", "Rock", "Soft Rock", "Jazz", "Classical", "Dance", "Pop", "Soft",
175 "Hard", "Party", "Vocal", "Hip-Hop", "Dialog", "Bass-boost #1",
176 "Bass-boost #2", "Bass-boost #3", "Loudness 1", "Loudness 2",
177 "Loudness 3", "Loudness 4", "Loudness 5", "Loudness 6", "Loudness 7",
178 "Loudness 8", "Loudness 9", "Loudness 10", "Loudness 11", "Loudness 12",
179 "Loudness 13", "Loudness 14", "Loudness 15", "Loudness 16" };
180 static const char *sta32x_limiter_select[] = {
181 "Limiter Disabled", "Limiter #1", "Limiter #2" };
182 static const char *sta32x_limiter_attack_rate[] = {
183 "3.1584", "2.7072", "2.2560", "1.8048", "1.3536", "0.9024",
184 "0.4512", "0.2256", "0.1504", "0.1123", "0.0902", "0.0752",
185 "0.0645", "0.0564", "0.0501", "0.0451" };
186 static const char *sta32x_limiter_release_rate[] = {
187 "0.5116", "0.1370", "0.0744", "0.0499", "0.0360", "0.0299",
188 "0.0264", "0.0208", "0.0198", "0.0172", "0.0147", "0.0137",
189 "0.0134", "0.0117", "0.0110", "0.0104" };
190 static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_attack_tlv,
191 0, 7, TLV_DB_SCALE_ITEM(-1200, 200, 0),
192 8, 16, TLV_DB_SCALE_ITEM(300, 100, 0),
193 );
194
195 static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_release_tlv,
196 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
197 1, 1, TLV_DB_SCALE_ITEM(-2900, 0, 0),
198 2, 2, TLV_DB_SCALE_ITEM(-2000, 0, 0),
199 3, 8, TLV_DB_SCALE_ITEM(-1400, 200, 0),
200 8, 16, TLV_DB_SCALE_ITEM(-700, 100, 0),
201 );
202
203 static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_attack_tlv,
204 0, 7, TLV_DB_SCALE_ITEM(-3100, 200, 0),
205 8, 13, TLV_DB_SCALE_ITEM(-1600, 100, 0),
206 14, 16, TLV_DB_SCALE_ITEM(-1000, 300, 0),
207 );
208
209 static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_release_tlv,
210 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
211 1, 2, TLV_DB_SCALE_ITEM(-3800, 200, 0),
212 3, 4, TLV_DB_SCALE_ITEM(-3300, 200, 0),
213 5, 12, TLV_DB_SCALE_ITEM(-3000, 200, 0),
214 13, 16, TLV_DB_SCALE_ITEM(-1500, 300, 0),
215 );
216
217 static SOC_ENUM_SINGLE_DECL(sta32x_drc_ac_enum,
218 STA32X_CONFD, STA32X_CONFD_DRC_SHIFT,
219 sta32x_drc_ac);
220 static SOC_ENUM_SINGLE_DECL(sta32x_auto_eq_enum,
221 STA32X_AUTO1, STA32X_AUTO1_AMEQ_SHIFT,
222 sta32x_auto_eq_mode);
223 static SOC_ENUM_SINGLE_DECL(sta32x_auto_gc_enum,
224 STA32X_AUTO1, STA32X_AUTO1_AMGC_SHIFT,
225 sta32x_auto_gc_mode);
226 static SOC_ENUM_SINGLE_DECL(sta32x_auto_xo_enum,
227 STA32X_AUTO2, STA32X_AUTO2_XO_SHIFT,
228 sta32x_auto_xo_mode);
229 static SOC_ENUM_SINGLE_DECL(sta32x_preset_eq_enum,
230 STA32X_AUTO3, STA32X_AUTO3_PEQ_SHIFT,
231 sta32x_preset_eq_mode);
232 static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch1_enum,
233 STA32X_C1CFG, STA32X_CxCFG_LS_SHIFT,
234 sta32x_limiter_select);
235 static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch2_enum,
236 STA32X_C2CFG, STA32X_CxCFG_LS_SHIFT,
237 sta32x_limiter_select);
238 static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch3_enum,
239 STA32X_C3CFG, STA32X_CxCFG_LS_SHIFT,
240 sta32x_limiter_select);
241 static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_attack_rate_enum,
242 STA32X_L1AR, STA32X_LxA_SHIFT,
243 sta32x_limiter_attack_rate);
244 static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_attack_rate_enum,
245 STA32X_L2AR, STA32X_LxA_SHIFT,
246 sta32x_limiter_attack_rate);
247 static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_release_rate_enum,
248 STA32X_L1AR, STA32X_LxR_SHIFT,
249 sta32x_limiter_release_rate);
250 static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_release_rate_enum,
251 STA32X_L2AR, STA32X_LxR_SHIFT,
252 sta32x_limiter_release_rate);
253
254 /* byte array controls for setting biquad, mixer, scaling coefficients;
255 * for biquads all five coefficients need to be set in one go,
256 * mixer and pre/postscale coefs can be set individually;
257 * each coef is 24bit, the bytes are ordered in the same way
258 * as given in the STA32x data sheet (big endian; b1, b2, a1, a2, b0)
259 */
260
261 static int sta32x_coefficient_info(struct snd_kcontrol *kcontrol,
262 struct snd_ctl_elem_info *uinfo)
263 {
264 int numcoef = kcontrol->private_value >> 16;
265 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
266 uinfo->count = 3 * numcoef;
267 return 0;
268 }
269
270 static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol,
271 struct snd_ctl_elem_value *ucontrol)
272 {
273 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
274 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
275 int numcoef = kcontrol->private_value >> 16;
276 int index = kcontrol->private_value & 0xffff;
277 unsigned int cfud, val;
278 int i, ret = 0;
279
280 mutex_lock(&sta32x->coeff_lock);
281
282 /* preserve reserved bits in STA32X_CFUD */
283 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
284 cfud &= 0xf0;
285 /*
286 * chip documentation does not say if the bits are self clearing,
287 * so do it explicitly
288 */
289 regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
290
291 regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
292 if (numcoef == 1) {
293 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x04);
294 } else if (numcoef == 5) {
295 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x08);
296 } else {
297 ret = -EINVAL;
298 goto exit_unlock;
299 }
300
301 for (i = 0; i < 3 * numcoef; i++) {
302 regmap_read(sta32x->regmap, STA32X_B1CF1 + i, &val);
303 ucontrol->value.bytes.data[i] = val;
304 }
305
306 exit_unlock:
307 mutex_unlock(&sta32x->coeff_lock);
308
309 return ret;
310 }
311
312 static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
313 struct snd_ctl_elem_value *ucontrol)
314 {
315 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
316 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
317 int numcoef = kcontrol->private_value >> 16;
318 int index = kcontrol->private_value & 0xffff;
319 unsigned int cfud;
320 int i;
321
322 /* preserve reserved bits in STA32X_CFUD */
323 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
324 cfud &= 0xf0;
325 /*
326 * chip documentation does not say if the bits are self clearing,
327 * so do it explicitly
328 */
329 regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
330
331 regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
332 for (i = 0; i < numcoef && (index + i < STA32X_COEF_COUNT); i++)
333 sta32x->coef_shadow[index + i] =
334 (ucontrol->value.bytes.data[3 * i] << 16)
335 | (ucontrol->value.bytes.data[3 * i + 1] << 8)
336 | (ucontrol->value.bytes.data[3 * i + 2]);
337 for (i = 0; i < 3 * numcoef; i++)
338 regmap_write(sta32x->regmap, STA32X_B1CF1 + i,
339 ucontrol->value.bytes.data[i]);
340 if (numcoef == 1)
341 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
342 else if (numcoef == 5)
343 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x02);
344 else
345 return -EINVAL;
346
347 return 0;
348 }
349
350 static int sta32x_sync_coef_shadow(struct snd_soc_codec *codec)
351 {
352 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
353 unsigned int cfud;
354 int i;
355
356 /* preserve reserved bits in STA32X_CFUD */
357 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
358 cfud &= 0xf0;
359
360 for (i = 0; i < STA32X_COEF_COUNT; i++) {
361 regmap_write(sta32x->regmap, STA32X_CFADDR2, i);
362 regmap_write(sta32x->regmap, STA32X_B1CF1,
363 (sta32x->coef_shadow[i] >> 16) & 0xff);
364 regmap_write(sta32x->regmap, STA32X_B1CF2,
365 (sta32x->coef_shadow[i] >> 8) & 0xff);
366 regmap_write(sta32x->regmap, STA32X_B1CF3,
367 (sta32x->coef_shadow[i]) & 0xff);
368 /*
369 * chip documentation does not say if the bits are
370 * self-clearing, so do it explicitly
371 */
372 regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
373 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
374 }
375 return 0;
376 }
377
378 static int sta32x_cache_sync(struct snd_soc_codec *codec)
379 {
380 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
381 unsigned int mute;
382 int rc;
383
384 /* mute during register sync */
385 regmap_read(sta32x->regmap, STA32X_MMUTE, &mute);
386 regmap_write(sta32x->regmap, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE);
387 sta32x_sync_coef_shadow(codec);
388 rc = regcache_sync(sta32x->regmap);
389 regmap_write(sta32x->regmap, STA32X_MMUTE, mute);
390 return rc;
391 }
392
393 /* work around ESD issue where sta32x resets and loses all configuration */
394 static void sta32x_watchdog(struct work_struct *work)
395 {
396 struct sta32x_priv *sta32x = container_of(work, struct sta32x_priv,
397 watchdog_work.work);
398 struct snd_soc_codec *codec = sta32x->codec;
399 unsigned int confa, confa_cached;
400
401 /* check if sta32x has reset itself */
402 confa_cached = snd_soc_read(codec, STA32X_CONFA);
403 regcache_cache_bypass(sta32x->regmap, true);
404 confa = snd_soc_read(codec, STA32X_CONFA);
405 regcache_cache_bypass(sta32x->regmap, false);
406 if (confa != confa_cached) {
407 regcache_mark_dirty(sta32x->regmap);
408 sta32x_cache_sync(codec);
409 }
410
411 if (!sta32x->shutdown)
412 queue_delayed_work(system_power_efficient_wq,
413 &sta32x->watchdog_work,
414 round_jiffies_relative(HZ));
415 }
416
417 static void sta32x_watchdog_start(struct sta32x_priv *sta32x)
418 {
419 if (sta32x->pdata->needs_esd_watchdog) {
420 sta32x->shutdown = 0;
421 queue_delayed_work(system_power_efficient_wq,
422 &sta32x->watchdog_work,
423 round_jiffies_relative(HZ));
424 }
425 }
426
427 static void sta32x_watchdog_stop(struct sta32x_priv *sta32x)
428 {
429 if (sta32x->pdata->needs_esd_watchdog) {
430 sta32x->shutdown = 1;
431 cancel_delayed_work_sync(&sta32x->watchdog_work);
432 }
433 }
434
435 #define SINGLE_COEF(xname, index) \
436 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
437 .info = sta32x_coefficient_info, \
438 .get = sta32x_coefficient_get,\
439 .put = sta32x_coefficient_put, \
440 .private_value = index | (1 << 16) }
441
442 #define BIQUAD_COEFS(xname, index) \
443 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
444 .info = sta32x_coefficient_info, \
445 .get = sta32x_coefficient_get,\
446 .put = sta32x_coefficient_put, \
447 .private_value = index | (5 << 16) }
448
449 static const struct snd_kcontrol_new sta32x_snd_controls[] = {
450 SOC_SINGLE_TLV("Master Volume", STA32X_MVOL, 0, 0xff, 1, mvol_tlv),
451 SOC_SINGLE("Master Switch", STA32X_MMUTE, 0, 1, 1),
452 SOC_SINGLE("Ch1 Switch", STA32X_MMUTE, 1, 1, 1),
453 SOC_SINGLE("Ch2 Switch", STA32X_MMUTE, 2, 1, 1),
454 SOC_SINGLE("Ch3 Switch", STA32X_MMUTE, 3, 1, 1),
455 SOC_SINGLE_TLV("Ch1 Volume", STA32X_C1VOL, 0, 0xff, 1, chvol_tlv),
456 SOC_SINGLE_TLV("Ch2 Volume", STA32X_C2VOL, 0, 0xff, 1, chvol_tlv),
457 SOC_SINGLE_TLV("Ch3 Volume", STA32X_C3VOL, 0, 0xff, 1, chvol_tlv),
458 SOC_SINGLE("De-emphasis Filter Switch", STA32X_CONFD, STA32X_CONFD_DEMP_SHIFT, 1, 0),
459 SOC_ENUM("Compressor/Limiter Switch", sta32x_drc_ac_enum),
460 SOC_SINGLE("Miami Mode Switch", STA32X_CONFD, STA32X_CONFD_MME_SHIFT, 1, 0),
461 SOC_SINGLE("Zero Cross Switch", STA32X_CONFE, STA32X_CONFE_ZCE_SHIFT, 1, 0),
462 SOC_SINGLE("Soft Ramp Switch", STA32X_CONFE, STA32X_CONFE_SVE_SHIFT, 1, 0),
463 SOC_SINGLE("Auto-Mute Switch", STA32X_CONFF, STA32X_CONFF_IDE_SHIFT, 1, 0),
464 SOC_ENUM("Automode EQ", sta32x_auto_eq_enum),
465 SOC_ENUM("Automode GC", sta32x_auto_gc_enum),
466 SOC_ENUM("Automode XO", sta32x_auto_xo_enum),
467 SOC_ENUM("Preset EQ", sta32x_preset_eq_enum),
468 SOC_SINGLE("Ch1 Tone Control Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0),
469 SOC_SINGLE("Ch2 Tone Control Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0),
470 SOC_SINGLE("Ch1 EQ Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0),
471 SOC_SINGLE("Ch2 EQ Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0),
472 SOC_SINGLE("Ch1 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
473 SOC_SINGLE("Ch2 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
474 SOC_SINGLE("Ch3 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
475 SOC_ENUM("Ch1 Limiter Select", sta32x_limiter_ch1_enum),
476 SOC_ENUM("Ch2 Limiter Select", sta32x_limiter_ch2_enum),
477 SOC_ENUM("Ch3 Limiter Select", sta32x_limiter_ch3_enum),
478 SOC_SINGLE_TLV("Bass Tone Control", STA32X_TONE, STA32X_TONE_BTC_SHIFT, 15, 0, tone_tlv),
479 SOC_SINGLE_TLV("Treble Tone Control", STA32X_TONE, STA32X_TONE_TTC_SHIFT, 15, 0, tone_tlv),
480 SOC_ENUM("Limiter1 Attack Rate (dB/ms)", sta32x_limiter1_attack_rate_enum),
481 SOC_ENUM("Limiter2 Attack Rate (dB/ms)", sta32x_limiter2_attack_rate_enum),
482 SOC_ENUM("Limiter1 Release Rate (dB/ms)", sta32x_limiter1_release_rate_enum),
483 SOC_ENUM("Limiter2 Release Rate (dB/ms)", sta32x_limiter2_release_rate_enum),
484
485 /* depending on mode, the attack/release thresholds have
486 * two different enum definitions; provide both
487 */
488 SOC_SINGLE_TLV("Limiter1 Attack Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT,
489 16, 0, sta32x_limiter_ac_attack_tlv),
490 SOC_SINGLE_TLV("Limiter2 Attack Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT,
491 16, 0, sta32x_limiter_ac_attack_tlv),
492 SOC_SINGLE_TLV("Limiter1 Release Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT,
493 16, 0, sta32x_limiter_ac_release_tlv),
494 SOC_SINGLE_TLV("Limiter2 Release Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT,
495 16, 0, sta32x_limiter_ac_release_tlv),
496 SOC_SINGLE_TLV("Limiter1 Attack Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT,
497 16, 0, sta32x_limiter_drc_attack_tlv),
498 SOC_SINGLE_TLV("Limiter2 Attack Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT,
499 16, 0, sta32x_limiter_drc_attack_tlv),
500 SOC_SINGLE_TLV("Limiter1 Release Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT,
501 16, 0, sta32x_limiter_drc_release_tlv),
502 SOC_SINGLE_TLV("Limiter2 Release Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT,
503 16, 0, sta32x_limiter_drc_release_tlv),
504
505 BIQUAD_COEFS("Ch1 - Biquad 1", 0),
506 BIQUAD_COEFS("Ch1 - Biquad 2", 5),
507 BIQUAD_COEFS("Ch1 - Biquad 3", 10),
508 BIQUAD_COEFS("Ch1 - Biquad 4", 15),
509 BIQUAD_COEFS("Ch2 - Biquad 1", 20),
510 BIQUAD_COEFS("Ch2 - Biquad 2", 25),
511 BIQUAD_COEFS("Ch2 - Biquad 3", 30),
512 BIQUAD_COEFS("Ch2 - Biquad 4", 35),
513 BIQUAD_COEFS("High-pass", 40),
514 BIQUAD_COEFS("Low-pass", 45),
515 SINGLE_COEF("Ch1 - Prescale", 50),
516 SINGLE_COEF("Ch2 - Prescale", 51),
517 SINGLE_COEF("Ch1 - Postscale", 52),
518 SINGLE_COEF("Ch2 - Postscale", 53),
519 SINGLE_COEF("Ch3 - Postscale", 54),
520 SINGLE_COEF("Thermal warning - Postscale", 55),
521 SINGLE_COEF("Ch1 - Mix 1", 56),
522 SINGLE_COEF("Ch1 - Mix 2", 57),
523 SINGLE_COEF("Ch2 - Mix 1", 58),
524 SINGLE_COEF("Ch2 - Mix 2", 59),
525 SINGLE_COEF("Ch3 - Mix 1", 60),
526 SINGLE_COEF("Ch3 - Mix 2", 61),
527 };
528
529 static const struct snd_soc_dapm_widget sta32x_dapm_widgets[] = {
530 SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
531 SND_SOC_DAPM_OUTPUT("LEFT"),
532 SND_SOC_DAPM_OUTPUT("RIGHT"),
533 SND_SOC_DAPM_OUTPUT("SUB"),
534 };
535
536 static const struct snd_soc_dapm_route sta32x_dapm_routes[] = {
537 { "LEFT", NULL, "DAC" },
538 { "RIGHT", NULL, "DAC" },
539 { "SUB", NULL, "DAC" },
540 };
541
542 /* MCLK interpolation ratio per fs */
543 static struct {
544 int fs;
545 int ir;
546 } interpolation_ratios[] = {
547 { 32000, 0 },
548 { 44100, 0 },
549 { 48000, 0 },
550 { 88200, 1 },
551 { 96000, 1 },
552 { 176400, 2 },
553 { 192000, 2 },
554 };
555
556 /* MCLK to fs clock ratios */
557 static int mcs_ratio_table[3][7] = {
558 { 768, 512, 384, 256, 128, 576, 0 },
559 { 384, 256, 192, 128, 64, 0 },
560 { 384, 256, 192, 128, 64, 0 },
561 };
562
563 /**
564 * sta32x_set_dai_sysclk - configure MCLK
565 * @codec_dai: the codec DAI
566 * @clk_id: the clock ID (ignored)
567 * @freq: the MCLK input frequency
568 * @dir: the clock direction (ignored)
569 *
570 * The value of MCLK is used to determine which sample rates are supported
571 * by the STA32X, based on the mclk_ratios table.
572 *
573 * This function must be called by the machine driver's 'startup' function,
574 * otherwise the list of supported sample rates will not be available in
575 * time for ALSA.
576 *
577 * For setups with variable MCLKs, pass 0 as 'freq' argument. This will cause
578 * theoretically possible sample rates to be enabled. Call it again with a
579 * proper value set one the external clock is set (most probably you would do
580 * that from a machine's driver 'hw_param' hook.
581 */
582 static int sta32x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
583 int clk_id, unsigned int freq, int dir)
584 {
585 struct snd_soc_codec *codec = codec_dai->codec;
586 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
587
588 dev_dbg(codec->dev, "mclk=%u\n", freq);
589 sta32x->mclk = freq;
590
591 return 0;
592 }
593
594 /**
595 * sta32x_set_dai_fmt - configure the codec for the selected audio format
596 * @codec_dai: the codec DAI
597 * @fmt: a SND_SOC_DAIFMT_x value indicating the data format
598 *
599 * This function takes a bitmask of SND_SOC_DAIFMT_x bits and programs the
600 * codec accordingly.
601 */
602 static int sta32x_set_dai_fmt(struct snd_soc_dai *codec_dai,
603 unsigned int fmt)
604 {
605 struct snd_soc_codec *codec = codec_dai->codec;
606 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
607 u8 confb = 0;
608
609 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
610 case SND_SOC_DAIFMT_CBS_CFS:
611 break;
612 default:
613 return -EINVAL;
614 }
615
616 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
617 case SND_SOC_DAIFMT_I2S:
618 case SND_SOC_DAIFMT_RIGHT_J:
619 case SND_SOC_DAIFMT_LEFT_J:
620 sta32x->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
621 break;
622 default:
623 return -EINVAL;
624 }
625
626 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
627 case SND_SOC_DAIFMT_NB_NF:
628 confb |= STA32X_CONFB_C2IM;
629 break;
630 case SND_SOC_DAIFMT_NB_IF:
631 confb |= STA32X_CONFB_C1IM;
632 break;
633 default:
634 return -EINVAL;
635 }
636
637 return regmap_update_bits(sta32x->regmap, STA32X_CONFB,
638 STA32X_CONFB_C1IM | STA32X_CONFB_C2IM, confb);
639 }
640
641 /**
642 * sta32x_hw_params - program the STA32X with the given hardware parameters.
643 * @substream: the audio stream
644 * @params: the hardware parameters to set
645 * @dai: the SOC DAI (ignored)
646 *
647 * This function programs the hardware with the values provided.
648 * Specifically, the sample rate and the data format.
649 */
650 static int sta32x_hw_params(struct snd_pcm_substream *substream,
651 struct snd_pcm_hw_params *params,
652 struct snd_soc_dai *dai)
653 {
654 struct snd_soc_codec *codec = dai->codec;
655 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
656 int i, mcs = -EINVAL, ir = -EINVAL;
657 unsigned int confa, confb;
658 unsigned int rate, ratio;
659 int ret;
660
661 if (!sta32x->mclk) {
662 dev_err(codec->dev,
663 "sta32x->mclk is unset. Unable to determine ratio\n");
664 return -EIO;
665 }
666
667 rate = params_rate(params);
668 ratio = sta32x->mclk / rate;
669 dev_dbg(codec->dev, "rate: %u, ratio: %u\n", rate, ratio);
670
671 for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) {
672 if (interpolation_ratios[i].fs == rate) {
673 ir = interpolation_ratios[i].ir;
674 break;
675 }
676 }
677
678 if (ir < 0) {
679 dev_err(codec->dev, "Unsupported samplerate: %u\n", rate);
680 return -EINVAL;
681 }
682
683 for (i = 0; i < 6; i++) {
684 if (mcs_ratio_table[ir][i] == ratio) {
685 mcs = i;
686 break;
687 }
688 }
689
690 if (mcs < 0) {
691 dev_err(codec->dev, "Unresolvable ratio: %u\n", ratio);
692 return -EINVAL;
693 }
694
695 confa = (ir << STA32X_CONFA_IR_SHIFT) |
696 (mcs << STA32X_CONFA_MCS_SHIFT);
697 confb = 0;
698
699 switch (params_width(params)) {
700 case 24:
701 dev_dbg(codec->dev, "24bit\n");
702 /* fall through */
703 case 32:
704 dev_dbg(codec->dev, "24bit or 32bit\n");
705 switch (sta32x->format) {
706 case SND_SOC_DAIFMT_I2S:
707 confb |= 0x0;
708 break;
709 case SND_SOC_DAIFMT_LEFT_J:
710 confb |= 0x1;
711 break;
712 case SND_SOC_DAIFMT_RIGHT_J:
713 confb |= 0x2;
714 break;
715 }
716
717 break;
718 case 20:
719 dev_dbg(codec->dev, "20bit\n");
720 switch (sta32x->format) {
721 case SND_SOC_DAIFMT_I2S:
722 confb |= 0x4;
723 break;
724 case SND_SOC_DAIFMT_LEFT_J:
725 confb |= 0x5;
726 break;
727 case SND_SOC_DAIFMT_RIGHT_J:
728 confb |= 0x6;
729 break;
730 }
731
732 break;
733 case 18:
734 dev_dbg(codec->dev, "18bit\n");
735 switch (sta32x->format) {
736 case SND_SOC_DAIFMT_I2S:
737 confb |= 0x8;
738 break;
739 case SND_SOC_DAIFMT_LEFT_J:
740 confb |= 0x9;
741 break;
742 case SND_SOC_DAIFMT_RIGHT_J:
743 confb |= 0xa;
744 break;
745 }
746
747 break;
748 case 16:
749 dev_dbg(codec->dev, "16bit\n");
750 switch (sta32x->format) {
751 case SND_SOC_DAIFMT_I2S:
752 confb |= 0x0;
753 break;
754 case SND_SOC_DAIFMT_LEFT_J:
755 confb |= 0xd;
756 break;
757 case SND_SOC_DAIFMT_RIGHT_J:
758 confb |= 0xe;
759 break;
760 }
761
762 break;
763 default:
764 return -EINVAL;
765 }
766
767 ret = regmap_update_bits(sta32x->regmap, STA32X_CONFA,
768 STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK,
769 confa);
770 if (ret < 0)
771 return ret;
772
773 ret = regmap_update_bits(sta32x->regmap, STA32X_CONFB,
774 STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB,
775 confb);
776 if (ret < 0)
777 return ret;
778
779 return 0;
780 }
781
782 static int sta32x_startup_sequence(struct sta32x_priv *sta32x)
783 {
784 if (sta32x->gpiod_nreset) {
785 gpiod_set_value(sta32x->gpiod_nreset, 0);
786 mdelay(1);
787 gpiod_set_value(sta32x->gpiod_nreset, 1);
788 mdelay(1);
789 }
790
791 return 0;
792 }
793
794 /**
795 * sta32x_set_bias_level - DAPM callback
796 * @codec: the codec device
797 * @level: DAPM power level
798 *
799 * This is called by ALSA to put the codec into low power mode
800 * or to wake it up. If the codec is powered off completely
801 * all registers must be restored after power on.
802 */
803 static int sta32x_set_bias_level(struct snd_soc_codec *codec,
804 enum snd_soc_bias_level level)
805 {
806 int ret;
807 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
808
809 dev_dbg(codec->dev, "level = %d\n", level);
810 switch (level) {
811 case SND_SOC_BIAS_ON:
812 break;
813
814 case SND_SOC_BIAS_PREPARE:
815 /* Full power on */
816 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
817 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
818 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD);
819 break;
820
821 case SND_SOC_BIAS_STANDBY:
822 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
823 ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
824 sta32x->supplies);
825 if (ret != 0) {
826 dev_err(codec->dev,
827 "Failed to enable supplies: %d\n", ret);
828 return ret;
829 }
830
831 sta32x_startup_sequence(sta32x);
832 sta32x_cache_sync(codec);
833 sta32x_watchdog_start(sta32x);
834 }
835
836 /* Power down */
837 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
838 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
839 0);
840
841 break;
842
843 case SND_SOC_BIAS_OFF:
844 /* The chip runs through the power down sequence for us. */
845 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
846 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 0);
847 msleep(300);
848 sta32x_watchdog_stop(sta32x);
849
850 if (sta32x->gpiod_nreset)
851 gpiod_set_value(sta32x->gpiod_nreset, 0);
852
853 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies),
854 sta32x->supplies);
855 break;
856 }
857 return 0;
858 }
859
860 static const struct snd_soc_dai_ops sta32x_dai_ops = {
861 .hw_params = sta32x_hw_params,
862 .set_sysclk = sta32x_set_dai_sysclk,
863 .set_fmt = sta32x_set_dai_fmt,
864 };
865
866 static struct snd_soc_dai_driver sta32x_dai = {
867 .name = "sta32x-hifi",
868 .playback = {
869 .stream_name = "Playback",
870 .channels_min = 2,
871 .channels_max = 2,
872 .rates = STA32X_RATES,
873 .formats = STA32X_FORMATS,
874 },
875 .ops = &sta32x_dai_ops,
876 };
877
878 static int sta32x_probe(struct snd_soc_codec *codec)
879 {
880 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
881 struct sta32x_platform_data *pdata = sta32x->pdata;
882 int i, ret = 0, thermal = 0;
883 ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
884 sta32x->supplies);
885 if (ret != 0) {
886 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
887 return ret;
888 }
889
890 ret = sta32x_startup_sequence(sta32x);
891 if (ret < 0) {
892 dev_err(codec->dev, "Failed to startup device\n");
893 return ret;
894 }
895
896 /* CONFA */
897 if (!pdata->thermal_warning_recovery)
898 thermal |= STA32X_CONFA_TWAB;
899 if (!pdata->thermal_warning_adjustment)
900 thermal |= STA32X_CONFA_TWRB;
901 if (!pdata->fault_detect_recovery)
902 thermal |= STA32X_CONFA_FDRB;
903 regmap_update_bits(sta32x->regmap, STA32X_CONFA,
904 STA32X_CONFA_TWAB | STA32X_CONFA_TWRB |
905 STA32X_CONFA_FDRB,
906 thermal);
907
908 /* CONFC */
909 regmap_update_bits(sta32x->regmap, STA32X_CONFC,
910 STA32X_CONFC_CSZ_MASK,
911 pdata->drop_compensation_ns
912 << STA32X_CONFC_CSZ_SHIFT);
913
914 /* CONFE */
915 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
916 STA32X_CONFE_MPCV,
917 pdata->max_power_use_mpcc ?
918 STA32X_CONFE_MPCV : 0);
919 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
920 STA32X_CONFE_MPC,
921 pdata->max_power_correction ?
922 STA32X_CONFE_MPC : 0);
923 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
924 STA32X_CONFE_AME,
925 pdata->am_reduction_mode ?
926 STA32X_CONFE_AME : 0);
927 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
928 STA32X_CONFE_PWMS,
929 pdata->odd_pwm_speed_mode ?
930 STA32X_CONFE_PWMS : 0);
931
932 /* CONFF */
933 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
934 STA32X_CONFF_IDE,
935 pdata->invalid_input_detect_mute ?
936 STA32X_CONFF_IDE : 0);
937
938 /* select output configuration */
939 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
940 STA32X_CONFF_OCFG_MASK,
941 pdata->output_conf
942 << STA32X_CONFF_OCFG_SHIFT);
943
944 /* channel to output mapping */
945 regmap_update_bits(sta32x->regmap, STA32X_C1CFG,
946 STA32X_CxCFG_OM_MASK,
947 pdata->ch1_output_mapping
948 << STA32X_CxCFG_OM_SHIFT);
949 regmap_update_bits(sta32x->regmap, STA32X_C2CFG,
950 STA32X_CxCFG_OM_MASK,
951 pdata->ch2_output_mapping
952 << STA32X_CxCFG_OM_SHIFT);
953 regmap_update_bits(sta32x->regmap, STA32X_C3CFG,
954 STA32X_CxCFG_OM_MASK,
955 pdata->ch3_output_mapping
956 << STA32X_CxCFG_OM_SHIFT);
957
958 /* initialize coefficient shadow RAM with reset values */
959 for (i = 4; i <= 49; i += 5)
960 sta32x->coef_shadow[i] = 0x400000;
961 for (i = 50; i <= 54; i++)
962 sta32x->coef_shadow[i] = 0x7fffff;
963 sta32x->coef_shadow[55] = 0x5a9df7;
964 sta32x->coef_shadow[56] = 0x7fffff;
965 sta32x->coef_shadow[59] = 0x7fffff;
966 sta32x->coef_shadow[60] = 0x400000;
967 sta32x->coef_shadow[61] = 0x400000;
968
969 if (sta32x->pdata->needs_esd_watchdog)
970 INIT_DELAYED_WORK(&sta32x->watchdog_work, sta32x_watchdog);
971
972 snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_STANDBY);
973 /* Bias level configuration will have done an extra enable */
974 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
975
976 return 0;
977 }
978
979 static int sta32x_remove(struct snd_soc_codec *codec)
980 {
981 struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
982
983 sta32x_watchdog_stop(sta32x);
984 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
985
986 return 0;
987 }
988
989 static const struct snd_soc_codec_driver sta32x_codec = {
990 .probe = sta32x_probe,
991 .remove = sta32x_remove,
992 .set_bias_level = sta32x_set_bias_level,
993 .suspend_bias_off = true,
994 .controls = sta32x_snd_controls,
995 .num_controls = ARRAY_SIZE(sta32x_snd_controls),
996 .dapm_widgets = sta32x_dapm_widgets,
997 .num_dapm_widgets = ARRAY_SIZE(sta32x_dapm_widgets),
998 .dapm_routes = sta32x_dapm_routes,
999 .num_dapm_routes = ARRAY_SIZE(sta32x_dapm_routes),
1000 };
1001
1002 static const struct regmap_config sta32x_regmap = {
1003 .reg_bits = 8,
1004 .val_bits = 8,
1005 .max_register = STA32X_FDRC2,
1006 .reg_defaults = sta32x_regs,
1007 .num_reg_defaults = ARRAY_SIZE(sta32x_regs),
1008 .cache_type = REGCACHE_RBTREE,
1009 .wr_table = &sta32x_write_regs,
1010 .rd_table = &sta32x_read_regs,
1011 .volatile_table = &sta32x_volatile_regs,
1012 };
1013
1014 #ifdef CONFIG_OF
1015 static const struct of_device_id st32x_dt_ids[] = {
1016 { .compatible = "st,sta32x", },
1017 { }
1018 };
1019 MODULE_DEVICE_TABLE(of, st32x_dt_ids);
1020
1021 static int sta32x_probe_dt(struct device *dev, struct sta32x_priv *sta32x)
1022 {
1023 struct device_node *np = dev->of_node;
1024 struct sta32x_platform_data *pdata;
1025 u16 tmp;
1026
1027 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
1028 if (!pdata)
1029 return -ENOMEM;
1030
1031 of_property_read_u8(np, "st,output-conf",
1032 &pdata->output_conf);
1033 of_property_read_u8(np, "st,ch1-output-mapping",
1034 &pdata->ch1_output_mapping);
1035 of_property_read_u8(np, "st,ch2-output-mapping",
1036 &pdata->ch2_output_mapping);
1037 of_property_read_u8(np, "st,ch3-output-mapping",
1038 &pdata->ch3_output_mapping);
1039
1040 if (of_get_property(np, "st,thermal-warning-recovery", NULL))
1041 pdata->thermal_warning_recovery = 1;
1042 if (of_get_property(np, "st,thermal-warning-adjustment", NULL))
1043 pdata->thermal_warning_adjustment = 1;
1044 if (of_get_property(np, "st,needs_esd_watchdog", NULL))
1045 pdata->needs_esd_watchdog = 1;
1046
1047 tmp = 140;
1048 of_property_read_u16(np, "st,drop-compensation-ns", &tmp);
1049 pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20;
1050
1051 /* CONFE */
1052 if (of_get_property(np, "st,max-power-use-mpcc", NULL))
1053 pdata->max_power_use_mpcc = 1;
1054
1055 if (of_get_property(np, "st,max-power-correction", NULL))
1056 pdata->max_power_correction = 1;
1057
1058 if (of_get_property(np, "st,am-reduction-mode", NULL))
1059 pdata->am_reduction_mode = 1;
1060
1061 if (of_get_property(np, "st,odd-pwm-speed-mode", NULL))
1062 pdata->odd_pwm_speed_mode = 1;
1063
1064 /* CONFF */
1065 if (of_get_property(np, "st,invalid-input-detect-mute", NULL))
1066 pdata->invalid_input_detect_mute = 1;
1067
1068 sta32x->pdata = pdata;
1069
1070 return 0;
1071 }
1072 #endif
1073
1074 static int sta32x_i2c_probe(struct i2c_client *i2c,
1075 const struct i2c_device_id *id)
1076 {
1077 struct device *dev = &i2c->dev;
1078 struct sta32x_priv *sta32x;
1079 int ret, i;
1080
1081 sta32x = devm_kzalloc(&i2c->dev, sizeof(struct sta32x_priv),
1082 GFP_KERNEL);
1083 if (!sta32x)
1084 return -ENOMEM;
1085
1086 mutex_init(&sta32x->coeff_lock);
1087 sta32x->pdata = dev_get_platdata(dev);
1088
1089 #ifdef CONFIG_OF
1090 if (dev->of_node) {
1091 ret = sta32x_probe_dt(dev, sta32x);
1092 if (ret < 0)
1093 return ret;
1094 }
1095 #endif
1096
1097 /* GPIOs */
1098 sta32x->gpiod_nreset = devm_gpiod_get_optional(dev, "reset",
1099 GPIOD_OUT_LOW);
1100 if (IS_ERR(sta32x->gpiod_nreset))
1101 return PTR_ERR(sta32x->gpiod_nreset);
1102
1103 /* regulators */
1104 for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++)
1105 sta32x->supplies[i].supply = sta32x_supply_names[i];
1106
1107 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(sta32x->supplies),
1108 sta32x->supplies);
1109 if (ret != 0) {
1110 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
1111 return ret;
1112 }
1113
1114 sta32x->regmap = devm_regmap_init_i2c(i2c, &sta32x_regmap);
1115 if (IS_ERR(sta32x->regmap)) {
1116 ret = PTR_ERR(sta32x->regmap);
1117 dev_err(dev, "Failed to init regmap: %d\n", ret);
1118 return ret;
1119 }
1120
1121 i2c_set_clientdata(i2c, sta32x);
1122
1123 ret = snd_soc_register_codec(dev, &sta32x_codec, &sta32x_dai, 1);
1124 if (ret < 0)
1125 dev_err(dev, "Failed to register codec (%d)\n", ret);
1126
1127 return ret;
1128 }
1129
1130 static int sta32x_i2c_remove(struct i2c_client *client)
1131 {
1132 snd_soc_unregister_codec(&client->dev);
1133 return 0;
1134 }
1135
1136 static const struct i2c_device_id sta32x_i2c_id[] = {
1137 { "sta326", 0 },
1138 { "sta328", 0 },
1139 { "sta329", 0 },
1140 { }
1141 };
1142 MODULE_DEVICE_TABLE(i2c, sta32x_i2c_id);
1143
1144 static struct i2c_driver sta32x_i2c_driver = {
1145 .driver = {
1146 .name = "sta32x",
1147 .of_match_table = of_match_ptr(st32x_dt_ids),
1148 },
1149 .probe = sta32x_i2c_probe,
1150 .remove = sta32x_i2c_remove,
1151 .id_table = sta32x_i2c_id,
1152 };
1153
1154 module_i2c_driver(sta32x_i2c_driver);
1155
1156 MODULE_DESCRIPTION("ASoC STA32X driver");
1157 MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
1158 MODULE_LICENSE("GPL");
Linux with added FPC-III support