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WIP FPC-III support
[linux/fpc-iii.git] / sound / soc / codecs / sta32x.c
blob86528b930de891b7d4051092c16ee289e1f20048
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system
4 *
5 * Copyright: 2011 Raumfeld GmbH
6 * Author: Johannes Stezenbach <js@sig21.net>
7 *
8 * based on code from:
9 * Wolfson Microelectronics PLC.
10 * Mark Brown <broonie@opensource.wolfsonmicro.com>
11 * Freescale Semiconductor, Inc.
12 * Timur Tabi <timur@freescale.com>
13 */
14
15 #define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__
16
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/init.h>
20 #include <linux/clk.h>
21 #include <linux/delay.h>
22 #include <linux/pm.h>
23 #include <linux/i2c.h>
24 #include <linux/of_device.h>
25 #include <linux/of_gpio.h>
26 #include <linux/regmap.h>
27 #include <linux/regulator/consumer.h>
28 #include <linux/gpio/consumer.h>
29 #include <linux/slab.h>
30 #include <linux/workqueue.h>
31 #include <sound/core.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #include <sound/soc.h>
35 #include <sound/soc-dapm.h>
36 #include <sound/initval.h>
37 #include <sound/tlv.h>
38
39 #include <sound/sta32x.h>
40 #include "sta32x.h"
41
42 #define STA32X_RATES (SNDRV_PCM_RATE_32000 | \
43 SNDRV_PCM_RATE_44100 | \
44 SNDRV_PCM_RATE_48000 | \
45 SNDRV_PCM_RATE_88200 | \
46 SNDRV_PCM_RATE_96000 | \
47 SNDRV_PCM_RATE_176400 | \
48 SNDRV_PCM_RATE_192000)
49
50 #define STA32X_FORMATS \
51 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
52 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
53 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
54 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
55 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \
56 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
57
58 /* Power-up register defaults */
59 static const struct reg_default sta32x_regs[] = {
60 { 0x0, 0x63 },
61 { 0x1, 0x80 },
62 { 0x2, 0xc2 },
63 { 0x3, 0x40 },
64 { 0x4, 0xc2 },
65 { 0x5, 0x5c },
66 { 0x6, 0x10 },
67 { 0x7, 0xff },
68 { 0x8, 0x60 },
69 { 0x9, 0x60 },
70 { 0xa, 0x60 },
71 { 0xb, 0x80 },
72 { 0xc, 0x00 },
73 { 0xd, 0x00 },
74 { 0xe, 0x00 },
75 { 0xf, 0x40 },
76 { 0x10, 0x80 },
77 { 0x11, 0x77 },
78 { 0x12, 0x6a },
79 { 0x13, 0x69 },
80 { 0x14, 0x6a },
81 { 0x15, 0x69 },
82 { 0x16, 0x00 },
83 { 0x17, 0x00 },
84 { 0x18, 0x00 },
85 { 0x19, 0x00 },
86 { 0x1a, 0x00 },
87 { 0x1b, 0x00 },
88 { 0x1c, 0x00 },
89 { 0x1d, 0x00 },
90 { 0x1e, 0x00 },
91 { 0x1f, 0x00 },
92 { 0x20, 0x00 },
93 { 0x21, 0x00 },
94 { 0x22, 0x00 },
95 { 0x23, 0x00 },
96 { 0x24, 0x00 },
97 { 0x25, 0x00 },
98 { 0x26, 0x00 },
99 { 0x27, 0x2d },
100 { 0x28, 0xc0 },
101 { 0x2b, 0x00 },
102 { 0x2c, 0x0c },
103 };
104
105 static const struct regmap_range sta32x_write_regs_range[] = {
106 regmap_reg_range(STA32X_CONFA, STA32X_FDRC2),
107 };
108
109 static const struct regmap_range sta32x_read_regs_range[] = {
110 regmap_reg_range(STA32X_CONFA, STA32X_FDRC2),
111 };
112
113 static const struct regmap_range sta32x_volatile_regs_range[] = {
114 regmap_reg_range(STA32X_CFADDR2, STA32X_CFUD),
115 };
116
117 static const struct regmap_access_table sta32x_write_regs = {
118 .yes_ranges = sta32x_write_regs_range,
119 .n_yes_ranges = ARRAY_SIZE(sta32x_write_regs_range),
120 };
121
122 static const struct regmap_access_table sta32x_read_regs = {
123 .yes_ranges = sta32x_read_regs_range,
124 .n_yes_ranges = ARRAY_SIZE(sta32x_read_regs_range),
125 };
126
127 static const struct regmap_access_table sta32x_volatile_regs = {
128 .yes_ranges = sta32x_volatile_regs_range,
129 .n_yes_ranges = ARRAY_SIZE(sta32x_volatile_regs_range),
130 };
131
132 /* regulator power supply names */
133 static const char *sta32x_supply_names[] = {
134 "Vdda", /* analog supply, 3.3VV */
135 "Vdd3", /* digital supply, 3.3V */
136 "Vcc" /* power amp spply, 10V - 36V */
137 };
138
139 /* codec private data */
140 struct sta32x_priv {
141 struct regmap *regmap;
142 struct clk *xti_clk;
143 struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)];
144 struct snd_soc_component *component;
145 struct sta32x_platform_data *pdata;
146
147 unsigned int mclk;
148 unsigned int format;
149
150 u32 coef_shadow[STA32X_COEF_COUNT];
151 struct delayed_work watchdog_work;
152 int shutdown;
153 struct gpio_desc *gpiod_nreset;
154 struct mutex coeff_lock;
155 };
156
157 static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
158 static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1);
159 static const DECLARE_TLV_DB_SCALE(tone_tlv, -120, 200, 0);
160
161 static const char *sta32x_drc_ac[] = {
162 "Anti-Clipping", "Dynamic Range Compression" };
163 static const char *sta32x_auto_eq_mode[] = {
164 "User", "Preset", "Loudness" };
165 static const char *sta32x_auto_gc_mode[] = {
166 "User", "AC no clipping", "AC limited clipping (10%)",
167 "DRC nighttime listening mode" };
168 static const char *sta32x_auto_xo_mode[] = {
169 "User", "80Hz", "100Hz", "120Hz", "140Hz", "160Hz", "180Hz", "200Hz",
170 "220Hz", "240Hz", "260Hz", "280Hz", "300Hz", "320Hz", "340Hz", "360Hz" };
171 static const char *sta32x_preset_eq_mode[] = {
172 "Flat", "Rock", "Soft Rock", "Jazz", "Classical", "Dance", "Pop", "Soft",
173 "Hard", "Party", "Vocal", "Hip-Hop", "Dialog", "Bass-boost #1",
174 "Bass-boost #2", "Bass-boost #3", "Loudness 1", "Loudness 2",
175 "Loudness 3", "Loudness 4", "Loudness 5", "Loudness 6", "Loudness 7",
176 "Loudness 8", "Loudness 9", "Loudness 10", "Loudness 11", "Loudness 12",
177 "Loudness 13", "Loudness 14", "Loudness 15", "Loudness 16" };
178 static const char *sta32x_limiter_select[] = {
179 "Limiter Disabled", "Limiter #1", "Limiter #2" };
180 static const char *sta32x_limiter_attack_rate[] = {
181 "3.1584", "2.7072", "2.2560", "1.8048", "1.3536", "0.9024",
182 "0.4512", "0.2256", "0.1504", "0.1123", "0.0902", "0.0752",
183 "0.0645", "0.0564", "0.0501", "0.0451" };
184 static const char *sta32x_limiter_release_rate[] = {
185 "0.5116", "0.1370", "0.0744", "0.0499", "0.0360", "0.0299",
186 "0.0264", "0.0208", "0.0198", "0.0172", "0.0147", "0.0137",
187 "0.0134", "0.0117", "0.0110", "0.0104" };
188 static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_attack_tlv,
189 0, 7, TLV_DB_SCALE_ITEM(-1200, 200, 0),
190 8, 16, TLV_DB_SCALE_ITEM(300, 100, 0),
191 );
192
193 static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_release_tlv,
194 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
195 1, 1, TLV_DB_SCALE_ITEM(-2900, 0, 0),
196 2, 2, TLV_DB_SCALE_ITEM(-2000, 0, 0),
197 3, 8, TLV_DB_SCALE_ITEM(-1400, 200, 0),
198 8, 16, TLV_DB_SCALE_ITEM(-700, 100, 0),
199 );
200
201 static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_attack_tlv,
202 0, 7, TLV_DB_SCALE_ITEM(-3100, 200, 0),
203 8, 13, TLV_DB_SCALE_ITEM(-1600, 100, 0),
204 14, 16, TLV_DB_SCALE_ITEM(-1000, 300, 0),
205 );
206
207 static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_release_tlv,
208 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
209 1, 2, TLV_DB_SCALE_ITEM(-3800, 200, 0),
210 3, 4, TLV_DB_SCALE_ITEM(-3300, 200, 0),
211 5, 12, TLV_DB_SCALE_ITEM(-3000, 200, 0),
212 13, 16, TLV_DB_SCALE_ITEM(-1500, 300, 0),
213 );
214
215 static SOC_ENUM_SINGLE_DECL(sta32x_drc_ac_enum,
216 STA32X_CONFD, STA32X_CONFD_DRC_SHIFT,
217 sta32x_drc_ac);
218 static SOC_ENUM_SINGLE_DECL(sta32x_auto_eq_enum,
219 STA32X_AUTO1, STA32X_AUTO1_AMEQ_SHIFT,
220 sta32x_auto_eq_mode);
221 static SOC_ENUM_SINGLE_DECL(sta32x_auto_gc_enum,
222 STA32X_AUTO1, STA32X_AUTO1_AMGC_SHIFT,
223 sta32x_auto_gc_mode);
224 static SOC_ENUM_SINGLE_DECL(sta32x_auto_xo_enum,
225 STA32X_AUTO2, STA32X_AUTO2_XO_SHIFT,
226 sta32x_auto_xo_mode);
227 static SOC_ENUM_SINGLE_DECL(sta32x_preset_eq_enum,
228 STA32X_AUTO3, STA32X_AUTO3_PEQ_SHIFT,
229 sta32x_preset_eq_mode);
230 static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch1_enum,
231 STA32X_C1CFG, STA32X_CxCFG_LS_SHIFT,
232 sta32x_limiter_select);
233 static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch2_enum,
234 STA32X_C2CFG, STA32X_CxCFG_LS_SHIFT,
235 sta32x_limiter_select);
236 static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch3_enum,
237 STA32X_C3CFG, STA32X_CxCFG_LS_SHIFT,
238 sta32x_limiter_select);
239 static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_attack_rate_enum,
240 STA32X_L1AR, STA32X_LxA_SHIFT,
241 sta32x_limiter_attack_rate);
242 static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_attack_rate_enum,
243 STA32X_L2AR, STA32X_LxA_SHIFT,
244 sta32x_limiter_attack_rate);
245 static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_release_rate_enum,
246 STA32X_L1AR, STA32X_LxR_SHIFT,
247 sta32x_limiter_release_rate);
248 static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_release_rate_enum,
249 STA32X_L2AR, STA32X_LxR_SHIFT,
250 sta32x_limiter_release_rate);
251
252 /* byte array controls for setting biquad, mixer, scaling coefficients;
253 * for biquads all five coefficients need to be set in one go,
254 * mixer and pre/postscale coefs can be set individually;
255 * each coef is 24bit, the bytes are ordered in the same way
256 * as given in the STA32x data sheet (big endian; b1, b2, a1, a2, b0)
257 */
258
259 static int sta32x_coefficient_info(struct snd_kcontrol *kcontrol,
260 struct snd_ctl_elem_info *uinfo)
261 {
262 int numcoef = kcontrol->private_value >> 16;
263 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
264 uinfo->count = 3 * numcoef;
265 return 0;
266 }
267
268 static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol,
269 struct snd_ctl_elem_value *ucontrol)
270 {
271 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
272 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
273 int numcoef = kcontrol->private_value >> 16;
274 int index = kcontrol->private_value & 0xffff;
275 unsigned int cfud, val;
276 int i, ret = 0;
277
278 mutex_lock(&sta32x->coeff_lock);
279
280 /* preserve reserved bits in STA32X_CFUD */
281 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
282 cfud &= 0xf0;
283 /*
284 * chip documentation does not say if the bits are self clearing,
285 * so do it explicitly
286 */
287 regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
288
289 regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
290 if (numcoef == 1) {
291 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x04);
292 } else if (numcoef == 5) {
293 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x08);
294 } else {
295 ret = -EINVAL;
296 goto exit_unlock;
297 }
298
299 for (i = 0; i < 3 * numcoef; i++) {
300 regmap_read(sta32x->regmap, STA32X_B1CF1 + i, &val);
301 ucontrol->value.bytes.data[i] = val;
302 }
303
304 exit_unlock:
305 mutex_unlock(&sta32x->coeff_lock);
306
307 return ret;
308 }
309
310 static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
311 struct snd_ctl_elem_value *ucontrol)
312 {
313 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
314 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
315 int numcoef = kcontrol->private_value >> 16;
316 int index = kcontrol->private_value & 0xffff;
317 unsigned int cfud;
318 int i;
319
320 /* preserve reserved bits in STA32X_CFUD */
321 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
322 cfud &= 0xf0;
323 /*
324 * chip documentation does not say if the bits are self clearing,
325 * so do it explicitly
326 */
327 regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
328
329 regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
330 for (i = 0; i < numcoef && (index + i < STA32X_COEF_COUNT); i++)
331 sta32x->coef_shadow[index + i] =
332 (ucontrol->value.bytes.data[3 * i] << 16)
333 | (ucontrol->value.bytes.data[3 * i + 1] << 8)
334 | (ucontrol->value.bytes.data[3 * i + 2]);
335 for (i = 0; i < 3 * numcoef; i++)
336 regmap_write(sta32x->regmap, STA32X_B1CF1 + i,
337 ucontrol->value.bytes.data[i]);
338 if (numcoef == 1)
339 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
340 else if (numcoef == 5)
341 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x02);
342 else
343 return -EINVAL;
344
345 return 0;
346 }
347
348 static int sta32x_sync_coef_shadow(struct snd_soc_component *component)
349 {
350 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
351 unsigned int cfud;
352 int i;
353
354 /* preserve reserved bits in STA32X_CFUD */
355 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
356 cfud &= 0xf0;
357
358 for (i = 0; i < STA32X_COEF_COUNT; i++) {
359 regmap_write(sta32x->regmap, STA32X_CFADDR2, i);
360 regmap_write(sta32x->regmap, STA32X_B1CF1,
361 (sta32x->coef_shadow[i] >> 16) & 0xff);
362 regmap_write(sta32x->regmap, STA32X_B1CF2,
363 (sta32x->coef_shadow[i] >> 8) & 0xff);
364 regmap_write(sta32x->regmap, STA32X_B1CF3,
365 (sta32x->coef_shadow[i]) & 0xff);
366 /*
367 * chip documentation does not say if the bits are
368 * self-clearing, so do it explicitly
369 */
370 regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
371 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
372 }
373 return 0;
374 }
375
376 static int sta32x_cache_sync(struct snd_soc_component *component)
377 {
378 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
379 unsigned int mute;
380 int rc;
381
382 /* mute during register sync */
383 regmap_read(sta32x->regmap, STA32X_MMUTE, &mute);
384 regmap_write(sta32x->regmap, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE);
385 sta32x_sync_coef_shadow(component);
386 rc = regcache_sync(sta32x->regmap);
387 regmap_write(sta32x->regmap, STA32X_MMUTE, mute);
388 return rc;
389 }
390
391 /* work around ESD issue where sta32x resets and loses all configuration */
392 static void sta32x_watchdog(struct work_struct *work)
393 {
394 struct sta32x_priv *sta32x = container_of(work, struct sta32x_priv,
395 watchdog_work.work);
396 struct snd_soc_component *component = sta32x->component;
397 unsigned int confa, confa_cached;
398
399 /* check if sta32x has reset itself */
400 confa_cached = snd_soc_component_read(component, STA32X_CONFA);
401 regcache_cache_bypass(sta32x->regmap, true);
402 confa = snd_soc_component_read(component, STA32X_CONFA);
403 regcache_cache_bypass(sta32x->regmap, false);
404 if (confa != confa_cached) {
405 regcache_mark_dirty(sta32x->regmap);
406 sta32x_cache_sync(component);
407 }
408
409 if (!sta32x->shutdown)
410 queue_delayed_work(system_power_efficient_wq,
411 &sta32x->watchdog_work,
412 round_jiffies_relative(HZ));
413 }
414
415 static void sta32x_watchdog_start(struct sta32x_priv *sta32x)
416 {
417 if (sta32x->pdata->needs_esd_watchdog) {
418 sta32x->shutdown = 0;
419 queue_delayed_work(system_power_efficient_wq,
420 &sta32x->watchdog_work,
421 round_jiffies_relative(HZ));
422 }
423 }
424
425 static void sta32x_watchdog_stop(struct sta32x_priv *sta32x)
426 {
427 if (sta32x->pdata->needs_esd_watchdog) {
428 sta32x->shutdown = 1;
429 cancel_delayed_work_sync(&sta32x->watchdog_work);
430 }
431 }
432
433 #define SINGLE_COEF(xname, index) \
434 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
435 .info = sta32x_coefficient_info, \
436 .get = sta32x_coefficient_get,\
437 .put = sta32x_coefficient_put, \
438 .private_value = index | (1 << 16) }
439
440 #define BIQUAD_COEFS(xname, index) \
441 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
442 .info = sta32x_coefficient_info, \
443 .get = sta32x_coefficient_get,\
444 .put = sta32x_coefficient_put, \
445 .private_value = index | (5 << 16) }
446
447 static const struct snd_kcontrol_new sta32x_snd_controls[] = {
448 SOC_SINGLE_TLV("Master Volume", STA32X_MVOL, 0, 0xff, 1, mvol_tlv),
449 SOC_SINGLE("Master Switch", STA32X_MMUTE, 0, 1, 1),
450 SOC_SINGLE("Ch1 Switch", STA32X_MMUTE, 1, 1, 1),
451 SOC_SINGLE("Ch2 Switch", STA32X_MMUTE, 2, 1, 1),
452 SOC_SINGLE("Ch3 Switch", STA32X_MMUTE, 3, 1, 1),
453 SOC_SINGLE_TLV("Ch1 Volume", STA32X_C1VOL, 0, 0xff, 1, chvol_tlv),
454 SOC_SINGLE_TLV("Ch2 Volume", STA32X_C2VOL, 0, 0xff, 1, chvol_tlv),
455 SOC_SINGLE_TLV("Ch3 Volume", STA32X_C3VOL, 0, 0xff, 1, chvol_tlv),
456 SOC_SINGLE("De-emphasis Filter Switch", STA32X_CONFD, STA32X_CONFD_DEMP_SHIFT, 1, 0),
457 SOC_ENUM("Compressor/Limiter Switch", sta32x_drc_ac_enum),
458 SOC_SINGLE("Miami Mode Switch", STA32X_CONFD, STA32X_CONFD_MME_SHIFT, 1, 0),
459 SOC_SINGLE("Zero Cross Switch", STA32X_CONFE, STA32X_CONFE_ZCE_SHIFT, 1, 0),
460 SOC_SINGLE("Soft Ramp Switch", STA32X_CONFE, STA32X_CONFE_SVE_SHIFT, 1, 0),
461 SOC_SINGLE("Auto-Mute Switch", STA32X_CONFF, STA32X_CONFF_IDE_SHIFT, 1, 0),
462 SOC_ENUM("Automode EQ", sta32x_auto_eq_enum),
463 SOC_ENUM("Automode GC", sta32x_auto_gc_enum),
464 SOC_ENUM("Automode XO", sta32x_auto_xo_enum),
465 SOC_ENUM("Preset EQ", sta32x_preset_eq_enum),
466 SOC_SINGLE("Ch1 Tone Control Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0),
467 SOC_SINGLE("Ch2 Tone Control Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0),
468 SOC_SINGLE("Ch1 EQ Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0),
469 SOC_SINGLE("Ch2 EQ Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0),
470 SOC_SINGLE("Ch1 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
471 SOC_SINGLE("Ch2 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
472 SOC_SINGLE("Ch3 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
473 SOC_ENUM("Ch1 Limiter Select", sta32x_limiter_ch1_enum),
474 SOC_ENUM("Ch2 Limiter Select", sta32x_limiter_ch2_enum),
475 SOC_ENUM("Ch3 Limiter Select", sta32x_limiter_ch3_enum),
476 SOC_SINGLE_TLV("Bass Tone Control", STA32X_TONE, STA32X_TONE_BTC_SHIFT, 15, 0, tone_tlv),
477 SOC_SINGLE_TLV("Treble Tone Control", STA32X_TONE, STA32X_TONE_TTC_SHIFT, 15, 0, tone_tlv),
478 SOC_ENUM("Limiter1 Attack Rate (dB/ms)", sta32x_limiter1_attack_rate_enum),
479 SOC_ENUM("Limiter2 Attack Rate (dB/ms)", sta32x_limiter2_attack_rate_enum),
480 SOC_ENUM("Limiter1 Release Rate (dB/ms)", sta32x_limiter1_release_rate_enum),
481 SOC_ENUM("Limiter2 Release Rate (dB/ms)", sta32x_limiter2_release_rate_enum),
482
483 /* depending on mode, the attack/release thresholds have
484 * two different enum definitions; provide both
485 */
486 SOC_SINGLE_TLV("Limiter1 Attack Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT,
487 16, 0, sta32x_limiter_ac_attack_tlv),
488 SOC_SINGLE_TLV("Limiter2 Attack Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT,
489 16, 0, sta32x_limiter_ac_attack_tlv),
490 SOC_SINGLE_TLV("Limiter1 Release Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT,
491 16, 0, sta32x_limiter_ac_release_tlv),
492 SOC_SINGLE_TLV("Limiter2 Release Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT,
493 16, 0, sta32x_limiter_ac_release_tlv),
494 SOC_SINGLE_TLV("Limiter1 Attack Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT,
495 16, 0, sta32x_limiter_drc_attack_tlv),
496 SOC_SINGLE_TLV("Limiter2 Attack Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT,
497 16, 0, sta32x_limiter_drc_attack_tlv),
498 SOC_SINGLE_TLV("Limiter1 Release Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT,
499 16, 0, sta32x_limiter_drc_release_tlv),
500 SOC_SINGLE_TLV("Limiter2 Release Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT,
501 16, 0, sta32x_limiter_drc_release_tlv),
502
503 BIQUAD_COEFS("Ch1 - Biquad 1", 0),
504 BIQUAD_COEFS("Ch1 - Biquad 2", 5),
505 BIQUAD_COEFS("Ch1 - Biquad 3", 10),
506 BIQUAD_COEFS("Ch1 - Biquad 4", 15),
507 BIQUAD_COEFS("Ch2 - Biquad 1", 20),
508 BIQUAD_COEFS("Ch2 - Biquad 2", 25),
509 BIQUAD_COEFS("Ch2 - Biquad 3", 30),
510 BIQUAD_COEFS("Ch2 - Biquad 4", 35),
511 BIQUAD_COEFS("High-pass", 40),
512 BIQUAD_COEFS("Low-pass", 45),
513 SINGLE_COEF("Ch1 - Prescale", 50),
514 SINGLE_COEF("Ch2 - Prescale", 51),
515 SINGLE_COEF("Ch1 - Postscale", 52),
516 SINGLE_COEF("Ch2 - Postscale", 53),
517 SINGLE_COEF("Ch3 - Postscale", 54),
518 SINGLE_COEF("Thermal warning - Postscale", 55),
519 SINGLE_COEF("Ch1 - Mix 1", 56),
520 SINGLE_COEF("Ch1 - Mix 2", 57),
521 SINGLE_COEF("Ch2 - Mix 1", 58),
522 SINGLE_COEF("Ch2 - Mix 2", 59),
523 SINGLE_COEF("Ch3 - Mix 1", 60),
524 SINGLE_COEF("Ch3 - Mix 2", 61),
525 };
526
527 static const struct snd_soc_dapm_widget sta32x_dapm_widgets[] = {
528 SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
529 SND_SOC_DAPM_OUTPUT("LEFT"),
530 SND_SOC_DAPM_OUTPUT("RIGHT"),
531 SND_SOC_DAPM_OUTPUT("SUB"),
532 };
533
534 static const struct snd_soc_dapm_route sta32x_dapm_routes[] = {
535 { "LEFT", NULL, "DAC" },
536 { "RIGHT", NULL, "DAC" },
537 { "SUB", NULL, "DAC" },
538 };
539
540 /* MCLK interpolation ratio per fs */
541 static struct {
542 int fs;
543 int ir;
544 } interpolation_ratios[] = {
545 { 32000, 0 },
546 { 44100, 0 },
547 { 48000, 0 },
548 { 88200, 1 },
549 { 96000, 1 },
550 { 176400, 2 },
551 { 192000, 2 },
552 };
553
554 /* MCLK to fs clock ratios */
555 static int mcs_ratio_table[3][7] = {
556 { 768, 512, 384, 256, 128, 576, 0 },
557 { 384, 256, 192, 128, 64, 0 },
558 { 384, 256, 192, 128, 64, 0 },
559 };
560
561 /**
562 * sta32x_set_dai_sysclk - configure MCLK
563 * @codec_dai: the codec DAI
564 * @clk_id: the clock ID (ignored)
565 * @freq: the MCLK input frequency
566 * @dir: the clock direction (ignored)
567 *
568 * The value of MCLK is used to determine which sample rates are supported
569 * by the STA32X, based on the mclk_ratios table.
570 *
571 * This function must be called by the machine driver's 'startup' function,
572 * otherwise the list of supported sample rates will not be available in
573 * time for ALSA.
574 *
575 * For setups with variable MCLKs, pass 0 as 'freq' argument. This will cause
576 * theoretically possible sample rates to be enabled. Call it again with a
577 * proper value set one the external clock is set (most probably you would do
578 * that from a machine's driver 'hw_param' hook.
579 */
580 static int sta32x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
581 int clk_id, unsigned int freq, int dir)
582 {
583 struct snd_soc_component *component = codec_dai->component;
584 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
585
586 dev_dbg(component->dev, "mclk=%u\n", freq);
587 sta32x->mclk = freq;
588
589 return 0;
590 }
591
592 /**
593 * sta32x_set_dai_fmt - configure the codec for the selected audio format
594 * @codec_dai: the codec DAI
595 * @fmt: a SND_SOC_DAIFMT_x value indicating the data format
596 *
597 * This function takes a bitmask of SND_SOC_DAIFMT_x bits and programs the
598 * codec accordingly.
599 */
600 static int sta32x_set_dai_fmt(struct snd_soc_dai *codec_dai,
601 unsigned int fmt)
602 {
603 struct snd_soc_component *component = codec_dai->component;
604 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
605 u8 confb = 0;
606
607 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
608 case SND_SOC_DAIFMT_CBS_CFS:
609 break;
610 default:
611 return -EINVAL;
612 }
613
614 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
615 case SND_SOC_DAIFMT_I2S:
616 case SND_SOC_DAIFMT_RIGHT_J:
617 case SND_SOC_DAIFMT_LEFT_J:
618 sta32x->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
619 break;
620 default:
621 return -EINVAL;
622 }
623
624 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
625 case SND_SOC_DAIFMT_NB_NF:
626 confb |= STA32X_CONFB_C2IM;
627 break;
628 case SND_SOC_DAIFMT_NB_IF:
629 confb |= STA32X_CONFB_C1IM;
630 break;
631 default:
632 return -EINVAL;
633 }
634
635 return regmap_update_bits(sta32x->regmap, STA32X_CONFB,
636 STA32X_CONFB_C1IM | STA32X_CONFB_C2IM, confb);
637 }
638
639 /**
640 * sta32x_hw_params - program the STA32X with the given hardware parameters.
641 * @substream: the audio stream
642 * @params: the hardware parameters to set
643 * @dai: the SOC DAI (ignored)
644 *
645 * This function programs the hardware with the values provided.
646 * Specifically, the sample rate and the data format.
647 */
648 static int sta32x_hw_params(struct snd_pcm_substream *substream,
649 struct snd_pcm_hw_params *params,
650 struct snd_soc_dai *dai)
651 {
652 struct snd_soc_component *component = dai->component;
653 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
654 int i, mcs = -EINVAL, ir = -EINVAL;
655 unsigned int confa, confb;
656 unsigned int rate, ratio;
657 int ret;
658
659 if (!sta32x->mclk) {
660 dev_err(component->dev,
661 "sta32x->mclk is unset. Unable to determine ratio\n");
662 return -EIO;
663 }
664
665 rate = params_rate(params);
666 ratio = sta32x->mclk / rate;
667 dev_dbg(component->dev, "rate: %u, ratio: %u\n", rate, ratio);
668
669 for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) {
670 if (interpolation_ratios[i].fs == rate) {
671 ir = interpolation_ratios[i].ir;
672 break;
673 }
674 }
675
676 if (ir < 0) {
677 dev_err(component->dev, "Unsupported samplerate: %u\n", rate);
678 return -EINVAL;
679 }
680
681 for (i = 0; i < 6; i++) {
682 if (mcs_ratio_table[ir][i] == ratio) {
683 mcs = i;
684 break;
685 }
686 }
687
688 if (mcs < 0) {
689 dev_err(component->dev, "Unresolvable ratio: %u\n", ratio);
690 return -EINVAL;
691 }
692
693 confa = (ir << STA32X_CONFA_IR_SHIFT) |
694 (mcs << STA32X_CONFA_MCS_SHIFT);
695 confb = 0;
696
697 switch (params_width(params)) {
698 case 24:
699 dev_dbg(component->dev, "24bit\n");
700 fallthrough;
701 case 32:
702 dev_dbg(component->dev, "24bit or 32bit\n");
703 switch (sta32x->format) {
704 case SND_SOC_DAIFMT_I2S:
705 confb |= 0x0;
706 break;
707 case SND_SOC_DAIFMT_LEFT_J:
708 confb |= 0x1;
709 break;
710 case SND_SOC_DAIFMT_RIGHT_J:
711 confb |= 0x2;
712 break;
713 }
714
715 break;
716 case 20:
717 dev_dbg(component->dev, "20bit\n");
718 switch (sta32x->format) {
719 case SND_SOC_DAIFMT_I2S:
720 confb |= 0x4;
721 break;
722 case SND_SOC_DAIFMT_LEFT_J:
723 confb |= 0x5;
724 break;
725 case SND_SOC_DAIFMT_RIGHT_J:
726 confb |= 0x6;
727 break;
728 }
729
730 break;
731 case 18:
732 dev_dbg(component->dev, "18bit\n");
733 switch (sta32x->format) {
734 case SND_SOC_DAIFMT_I2S:
735 confb |= 0x8;
736 break;
737 case SND_SOC_DAIFMT_LEFT_J:
738 confb |= 0x9;
739 break;
740 case SND_SOC_DAIFMT_RIGHT_J:
741 confb |= 0xa;
742 break;
743 }
744
745 break;
746 case 16:
747 dev_dbg(component->dev, "16bit\n");
748 switch (sta32x->format) {
749 case SND_SOC_DAIFMT_I2S:
750 confb |= 0x0;
751 break;
752 case SND_SOC_DAIFMT_LEFT_J:
753 confb |= 0xd;
754 break;
755 case SND_SOC_DAIFMT_RIGHT_J:
756 confb |= 0xe;
757 break;
758 }
759
760 break;
761 default:
762 return -EINVAL;
763 }
764
765 ret = regmap_update_bits(sta32x->regmap, STA32X_CONFA,
766 STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK,
767 confa);
768 if (ret < 0)
769 return ret;
770
771 ret = regmap_update_bits(sta32x->regmap, STA32X_CONFB,
772 STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB,
773 confb);
774 if (ret < 0)
775 return ret;
776
777 return 0;
778 }
779
780 static int sta32x_startup_sequence(struct sta32x_priv *sta32x)
781 {
782 if (sta32x->gpiod_nreset) {
783 gpiod_set_value(sta32x->gpiod_nreset, 0);
784 mdelay(1);
785 gpiod_set_value(sta32x->gpiod_nreset, 1);
786 mdelay(1);
787 }
788
789 return 0;
790 }
791
792 /**
793 * sta32x_set_bias_level - DAPM callback
794 * @component: the component device
795 * @level: DAPM power level
796 *
797 * This is called by ALSA to put the component into low power mode
798 * or to wake it up. If the component is powered off completely
799 * all registers must be restored after power on.
800 */
801 static int sta32x_set_bias_level(struct snd_soc_component *component,
802 enum snd_soc_bias_level level)
803 {
804 int ret;
805 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
806
807 dev_dbg(component->dev, "level = %d\n", level);
808 switch (level) {
809 case SND_SOC_BIAS_ON:
810 break;
811
812 case SND_SOC_BIAS_PREPARE:
813 /* Full power on */
814 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
815 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
816 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD);
817 break;
818
819 case SND_SOC_BIAS_STANDBY:
820 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
821 ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
822 sta32x->supplies);
823 if (ret != 0) {
824 dev_err(component->dev,
825 "Failed to enable supplies: %d\n", ret);
826 return ret;
827 }
828
829 sta32x_startup_sequence(sta32x);
830 sta32x_cache_sync(component);
831 sta32x_watchdog_start(sta32x);
832 }
833
834 /* Power down */
835 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
836 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
837 0);
838
839 break;
840
841 case SND_SOC_BIAS_OFF:
842 /* The chip runs through the power down sequence for us. */
843 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
844 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 0);
845 msleep(300);
846 sta32x_watchdog_stop(sta32x);
847
848 gpiod_set_value(sta32x->gpiod_nreset, 0);
849
850 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies),
851 sta32x->supplies);
852 break;
853 }
854 return 0;
855 }
856
857 static const struct snd_soc_dai_ops sta32x_dai_ops = {
858 .hw_params = sta32x_hw_params,
859 .set_sysclk = sta32x_set_dai_sysclk,
860 .set_fmt = sta32x_set_dai_fmt,
861 };
862
863 static struct snd_soc_dai_driver sta32x_dai = {
864 .name = "sta32x-hifi",
865 .playback = {
866 .stream_name = "Playback",
867 .channels_min = 2,
868 .channels_max = 2,
869 .rates = STA32X_RATES,
870 .formats = STA32X_FORMATS,
871 },
872 .ops = &sta32x_dai_ops,
873 };
874
875 static int sta32x_probe(struct snd_soc_component *component)
876 {
877 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
878 struct sta32x_platform_data *pdata = sta32x->pdata;
879 int i, ret = 0, thermal = 0;
880
881 sta32x->component = component;
882
883 if (sta32x->xti_clk) {
884 ret = clk_prepare_enable(sta32x->xti_clk);
885 if (ret != 0) {
886 dev_err(component->dev,
887 "Failed to enable clock: %d\n", ret);
888 return ret;
889 }
890 }
891
892 ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
893 sta32x->supplies);
894 if (ret != 0) {
895 dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
896 goto err_clk_disable_unprepare;
897 }
898
899 ret = sta32x_startup_sequence(sta32x);
900 if (ret < 0) {
901 dev_err(component->dev, "Failed to startup device\n");
902 goto err_regulator_bulk_disable;
903 }
904
905 /* CONFA */
906 if (!pdata->thermal_warning_recovery)
907 thermal |= STA32X_CONFA_TWAB;
908 if (!pdata->thermal_warning_adjustment)
909 thermal |= STA32X_CONFA_TWRB;
910 if (!pdata->fault_detect_recovery)
911 thermal |= STA32X_CONFA_FDRB;
912 regmap_update_bits(sta32x->regmap, STA32X_CONFA,
913 STA32X_CONFA_TWAB | STA32X_CONFA_TWRB |
914 STA32X_CONFA_FDRB,
915 thermal);
916
917 /* CONFC */
918 regmap_update_bits(sta32x->regmap, STA32X_CONFC,
919 STA32X_CONFC_CSZ_MASK,
920 pdata->drop_compensation_ns
921 << STA32X_CONFC_CSZ_SHIFT);
922
923 /* CONFE */
924 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
925 STA32X_CONFE_MPCV,
926 pdata->max_power_use_mpcc ?
927 STA32X_CONFE_MPCV : 0);
928 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
929 STA32X_CONFE_MPC,
930 pdata->max_power_correction ?
931 STA32X_CONFE_MPC : 0);
932 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
933 STA32X_CONFE_AME,
934 pdata->am_reduction_mode ?
935 STA32X_CONFE_AME : 0);
936 regmap_update_bits(sta32x->regmap, STA32X_CONFE,
937 STA32X_CONFE_PWMS,
938 pdata->odd_pwm_speed_mode ?
939 STA32X_CONFE_PWMS : 0);
940
941 /* CONFF */
942 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
943 STA32X_CONFF_IDE,
944 pdata->invalid_input_detect_mute ?
945 STA32X_CONFF_IDE : 0);
946
947 /* select output configuration */
948 regmap_update_bits(sta32x->regmap, STA32X_CONFF,
949 STA32X_CONFF_OCFG_MASK,
950 pdata->output_conf
951 << STA32X_CONFF_OCFG_SHIFT);
952
953 /* channel to output mapping */
954 regmap_update_bits(sta32x->regmap, STA32X_C1CFG,
955 STA32X_CxCFG_OM_MASK,
956 pdata->ch1_output_mapping
957 << STA32X_CxCFG_OM_SHIFT);
958 regmap_update_bits(sta32x->regmap, STA32X_C2CFG,
959 STA32X_CxCFG_OM_MASK,
960 pdata->ch2_output_mapping
961 << STA32X_CxCFG_OM_SHIFT);
962 regmap_update_bits(sta32x->regmap, STA32X_C3CFG,
963 STA32X_CxCFG_OM_MASK,
964 pdata->ch3_output_mapping
965 << STA32X_CxCFG_OM_SHIFT);
966
967 /* initialize coefficient shadow RAM with reset values */
968 for (i = 4; i <= 49; i += 5)
969 sta32x->coef_shadow[i] = 0x400000;
970 for (i = 50; i <= 54; i++)
971 sta32x->coef_shadow[i] = 0x7fffff;
972 sta32x->coef_shadow[55] = 0x5a9df7;
973 sta32x->coef_shadow[56] = 0x7fffff;
974 sta32x->coef_shadow[59] = 0x7fffff;
975 sta32x->coef_shadow[60] = 0x400000;
976 sta32x->coef_shadow[61] = 0x400000;
977
978 if (sta32x->pdata->needs_esd_watchdog)
979 INIT_DELAYED_WORK(&sta32x->watchdog_work, sta32x_watchdog);
980
981 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
982 /* Bias level configuration will have done an extra enable */
983 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
984
985 return 0;
986
987 err_regulator_bulk_disable:
988 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
989 err_clk_disable_unprepare:
990 if (sta32x->xti_clk)
991 clk_disable_unprepare(sta32x->xti_clk);
992 return ret;
993 }
994
995 static void sta32x_remove(struct snd_soc_component *component)
996 {
997 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
998
999 sta32x_watchdog_stop(sta32x);
1000 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
1001
1002 if (sta32x->xti_clk)
1003 clk_disable_unprepare(sta32x->xti_clk);
1004 }
1005
1006 static const struct snd_soc_component_driver sta32x_component = {
1007 .probe = sta32x_probe,
1008 .remove = sta32x_remove,
1009 .set_bias_level = sta32x_set_bias_level,
1010 .controls = sta32x_snd_controls,
1011 .num_controls = ARRAY_SIZE(sta32x_snd_controls),
1012 .dapm_widgets = sta32x_dapm_widgets,
1013 .num_dapm_widgets = ARRAY_SIZE(sta32x_dapm_widgets),
1014 .dapm_routes = sta32x_dapm_routes,
1015 .num_dapm_routes = ARRAY_SIZE(sta32x_dapm_routes),
1016 .suspend_bias_off = 1,
1017 .idle_bias_on = 1,
1018 .use_pmdown_time = 1,
1019 .endianness = 1,
1020 .non_legacy_dai_naming = 1,
1021 };
1022
1023 static const struct regmap_config sta32x_regmap = {
1024 .reg_bits = 8,
1025 .val_bits = 8,
1026 .max_register = STA32X_FDRC2,
1027 .reg_defaults = sta32x_regs,
1028 .num_reg_defaults = ARRAY_SIZE(sta32x_regs),
1029 .cache_type = REGCACHE_RBTREE,
1030 .wr_table = &sta32x_write_regs,
1031 .rd_table = &sta32x_read_regs,
1032 .volatile_table = &sta32x_volatile_regs,
1033 };
1034
1035 #ifdef CONFIG_OF
1036 static const struct of_device_id st32x_dt_ids[] = {
1037 { .compatible = "st,sta32x", },
1038 { }
1039 };
1040 MODULE_DEVICE_TABLE(of, st32x_dt_ids);
1041
1042 static int sta32x_probe_dt(struct device *dev, struct sta32x_priv *sta32x)
1043 {
1044 struct device_node *np = dev->of_node;
1045 struct sta32x_platform_data *pdata;
1046 u16 tmp;
1047
1048 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
1049 if (!pdata)
1050 return -ENOMEM;
1051
1052 of_property_read_u8(np, "st,output-conf",
1053 &pdata->output_conf);
1054 of_property_read_u8(np, "st,ch1-output-mapping",
1055 &pdata->ch1_output_mapping);
1056 of_property_read_u8(np, "st,ch2-output-mapping",
1057 &pdata->ch2_output_mapping);
1058 of_property_read_u8(np, "st,ch3-output-mapping",
1059 &pdata->ch3_output_mapping);
1060
1061 if (of_get_property(np, "st,fault-detect-recovery", NULL))
1062 pdata->fault_detect_recovery = 1;
1063 if (of_get_property(np, "st,thermal-warning-recovery", NULL))
1064 pdata->thermal_warning_recovery = 1;
1065 if (of_get_property(np, "st,thermal-warning-adjustment", NULL))
1066 pdata->thermal_warning_adjustment = 1;
1067 if (of_get_property(np, "st,needs_esd_watchdog", NULL))
1068 pdata->needs_esd_watchdog = 1;
1069
1070 tmp = 140;
1071 of_property_read_u16(np, "st,drop-compensation-ns", &tmp);
1072 pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20;
1073
1074 /* CONFE */
1075 if (of_get_property(np, "st,max-power-use-mpcc", NULL))
1076 pdata->max_power_use_mpcc = 1;
1077
1078 if (of_get_property(np, "st,max-power-correction", NULL))
1079 pdata->max_power_correction = 1;
1080
1081 if (of_get_property(np, "st,am-reduction-mode", NULL))
1082 pdata->am_reduction_mode = 1;
1083
1084 if (of_get_property(np, "st,odd-pwm-speed-mode", NULL))
1085 pdata->odd_pwm_speed_mode = 1;
1086
1087 /* CONFF */
1088 if (of_get_property(np, "st,invalid-input-detect-mute", NULL))
1089 pdata->invalid_input_detect_mute = 1;
1090
1091 sta32x->pdata = pdata;
1092
1093 return 0;
1094 }
1095 #endif
1096
1097 static int sta32x_i2c_probe(struct i2c_client *i2c,
1098 const struct i2c_device_id *id)
1099 {
1100 struct device *dev = &i2c->dev;
1101 struct sta32x_priv *sta32x;
1102 int ret, i;
1103
1104 sta32x = devm_kzalloc(&i2c->dev, sizeof(struct sta32x_priv),
1105 GFP_KERNEL);
1106 if (!sta32x)
1107 return -ENOMEM;
1108
1109 mutex_init(&sta32x->coeff_lock);
1110 sta32x->pdata = dev_get_platdata(dev);
1111
1112 #ifdef CONFIG_OF
1113 if (dev->of_node) {
1114 ret = sta32x_probe_dt(dev, sta32x);
1115 if (ret < 0)
1116 return ret;
1117 }
1118 #endif
1119
1120 /* Clock */
1121 sta32x->xti_clk = devm_clk_get(dev, "xti");
1122 if (IS_ERR(sta32x->xti_clk)) {
1123 ret = PTR_ERR(sta32x->xti_clk);
1124
1125 if (ret == -EPROBE_DEFER)
1126 return ret;
1127
1128 sta32x->xti_clk = NULL;
1129 }
1130
1131 /* GPIOs */
1132 sta32x->gpiod_nreset = devm_gpiod_get_optional(dev, "reset",
1133 GPIOD_OUT_LOW);
1134 if (IS_ERR(sta32x->gpiod_nreset))
1135 return PTR_ERR(sta32x->gpiod_nreset);
1136
1137 /* regulators */
1138 for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++)
1139 sta32x->supplies[i].supply = sta32x_supply_names[i];
1140
1141 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(sta32x->supplies),
1142 sta32x->supplies);
1143 if (ret != 0) {
1144 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
1145 return ret;
1146 }
1147
1148 sta32x->regmap = devm_regmap_init_i2c(i2c, &sta32x_regmap);
1149 if (IS_ERR(sta32x->regmap)) {
1150 ret = PTR_ERR(sta32x->regmap);
1151 dev_err(dev, "Failed to init regmap: %d\n", ret);
1152 return ret;
1153 }
1154
1155 i2c_set_clientdata(i2c, sta32x);
1156
1157 ret = devm_snd_soc_register_component(dev, &sta32x_component,
1158 &sta32x_dai, 1);
1159 if (ret < 0)
1160 dev_err(dev, "Failed to register component (%d)\n", ret);
1161
1162 return ret;
1163 }
1164
1165 static const struct i2c_device_id sta32x_i2c_id[] = {
1166 { "sta326", 0 },
1167 { "sta328", 0 },
1168 { "sta329", 0 },
1169 { }
1170 };
1171 MODULE_DEVICE_TABLE(i2c, sta32x_i2c_id);
1172
1173 static struct i2c_driver sta32x_i2c_driver = {
1174 .driver = {
1175 .name = "sta32x",
1176 .of_match_table = of_match_ptr(st32x_dt_ids),
1177 },
1178 .probe = sta32x_i2c_probe,
1179 .id_table = sta32x_i2c_id,
1180 };
1181
1182 module_i2c_driver(sta32x_i2c_driver);
1183
1184 MODULE_DESCRIPTION("ASoC STA32X driver");
1185 MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
1186 MODULE_LICENSE("GPL");
Linux with added FPC-III support