1// SPDX-License-Identifier: GPL-2.0-only
2//
3// rt1316-sdw.c -- rt1316 SDCA ALSA SoC amplifier audio driver
4//
5// Copyright(c) 2021 Realtek Semiconductor Corp.
6//
7//
8#include <linux/delay.h>
9#include <linux/device.h>
10#include <linux/pm_runtime.h>
11#include <linux/mod_devicetable.h>
12#include <linux/module.h>
13#include <linux/regmap.h>
14#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/pcm_params.h>
17#include <sound/sdw.h>
18#include <sound/soc-dapm.h>
19#include <sound/initval.h>
20#include "rt1316-sdw.h"
21
22static const struct reg_default rt1316_reg_defaults[] = {
23 { 0x3004, 0x00 },
24 { 0x3005, 0x00 },
25 { 0x3206, 0x00 },
26 { 0xc001, 0x00 },
27 { 0xc002, 0x00 },
28 { 0xc003, 0x00 },
29 { 0xc004, 0x00 },
30 { 0xc005, 0x00 },
31 { 0xc006, 0x00 },
32 { 0xc007, 0x00 },
33 { 0xc008, 0x00 },
34 { 0xc009, 0x00 },
35 { 0xc00a, 0x00 },
36 { 0xc00b, 0x00 },
37 { 0xc00c, 0x00 },
38 { 0xc00d, 0x00 },
39 { 0xc00e, 0x00 },
40 { 0xc00f, 0x00 },
41 { 0xc010, 0xa5 },
42 { 0xc011, 0x00 },
43 { 0xc012, 0xff },
44 { 0xc013, 0xff },
45 { 0xc014, 0x40 },
46 { 0xc015, 0x00 },
47 { 0xc016, 0x00 },
48 { 0xc017, 0x00 },
49 { 0xc605, 0x30 },
50 { 0xc700, 0x0a },
51 { 0xc701, 0xaa },
52 { 0xc702, 0x1a },
53 { 0xc703, 0x0a },
54 { 0xc710, 0x80 },
55 { 0xc711, 0x00 },
56 { 0xc712, 0x3e },
57 { 0xc713, 0x80 },
58 { 0xc714, 0x80 },
59 { 0xc715, 0x06 },
60 { 0xd101, 0x00 },
61 { 0xd102, 0x30 },
62 { 0xd103, 0x00 },
63 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_UDMPU21, RT1316_SDCA_CTL_UDMPU_CLUSTER, 0), 0x00 },
64 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_L), 0x01 },
65 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_R), 0x01 },
66 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_XU24, RT1316_SDCA_CTL_BYPASS, 0), 0x01 },
67 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE23, RT1316_SDCA_CTL_REQ_POWER_STATE, 0), 0x03 },
68 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE22, RT1316_SDCA_CTL_REQ_POWER_STATE, 0), 0x03 },
69 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE24, RT1316_SDCA_CTL_REQ_POWER_STATE, 0), 0x03 },
70};
71
72static const struct reg_sequence rt1316_blind_write[] = {
73 { 0xc710, 0x17 },
74 { 0xc711, 0x80 },
75 { 0xc712, 0x26 },
76 { 0xc713, 0x06 },
77 { 0xc714, 0x80 },
78 { 0xc715, 0x06 },
79 { 0xc702, 0x0a },
80 { 0xc703, 0x0a },
81 { 0xc001, 0x45 },
82 { 0xc003, 0x00 },
83 { 0xc004, 0x11 },
84 { 0xc005, 0x00 },
85 { 0xc006, 0x00 },
86 { 0xc106, 0x00 },
87 { 0xc007, 0x11 },
88 { 0xc008, 0x11 },
89 { 0xc009, 0x00 },
90
91 { 0x2f0a, 0x00 },
92 { 0xd101, 0xf0 },
93 { 0xd103, 0x9b },
94 { 0x2f36, 0x8e },
95 { 0x3206, 0x80 },
96 { 0x3211, 0x0b },
97 { 0x3216, 0x06 },
98 { 0xc614, 0x20 },
99 { 0xc615, 0x0a },
100 { 0xc616, 0x02 },
101 { 0xc617, 0x00 },
102 { 0xc60b, 0x10 },
103 { 0xc60e, 0x05 },
104 { 0xc102, 0x00 },
105 { 0xc090, 0xb0 },
106 { 0xc00f, 0x01 },
107 { 0xc09c, 0x7b },
108
109 { 0xc602, 0x07 },
110 { 0xc603, 0x07 },
111 { 0xc0a3, 0x71 },
112 { 0xc00b, 0x30 },
113 { 0xc093, 0x80 },
114 { 0xc09d, 0x80 },
115 { 0xc0b0, 0x77 },
116 { 0xc010, 0xa5 },
117 { 0xc050, 0x83 },
118 { 0x2f55, 0x03 },
119 { 0x3217, 0xb5 },
120 { 0x3202, 0x02 },
121
122 { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_XU24, RT1316_SDCA_CTL_BYPASS, 0), 0x00 },
123
124 /* for IV sense */
125 { 0x2232, 0x80 },
126 { 0xc0b0, 0x77 },
127 { 0xc011, 0x00 },
128 { 0xc020, 0x00 },
129 { 0xc023, 0x00 },
130 { 0x3101, 0x00 },
131 { 0x3004, 0xa0 },
132 { 0x3005, 0xb1 },
133 { 0xc007, 0x11 },
134 { 0xc008, 0x11 },
135 { 0xc009, 0x00 },
136 { 0xc022, 0xd6 },
137 { 0xc025, 0xd6 },
138
139 { 0xd001, 0x03 },
140 { 0xd002, 0xbf },
141 { 0xd003, 0x03 },
142 { 0xd004, 0xbf },
143};
144
145static bool rt1316_readable_register(struct device *dev, unsigned int reg)
146{
147 switch (reg) {
148 case 0x2f0a:
149 case 0x2f36:
150 case 0x3203 ... 0x320e:
151 case 0xc000 ... 0xc7b4:
152 case 0xcf00 ... 0xcf03:
153 case 0xd101 ... 0xd103:
154 case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_UDMPU21, RT1316_SDCA_CTL_UDMPU_CLUSTER, 0):
155 case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_L):
156 case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_R):
157 case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE23, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
158 case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE27, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
159 case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE22, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
160 case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE24, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
161 return true;
162 default:
163 return false;
164 }
165}
166
167static bool rt1316_volatile_register(struct device *dev, unsigned int reg)
168{
169 switch (reg) {
170 case 0xc000:
171 case 0xc093:
172 case 0xc09d:
173 case 0xc0a3:
174 case 0xc201:
175 case 0xc427 ... 0xc428:
176 case 0xd102:
177 return true;
178 default:
179 return false;
180 }
181}
182
183static const struct regmap_config rt1316_sdw_regmap = {
184 .reg_bits = 32,
185 .val_bits = 8,
186 .readable_reg = rt1316_readable_register,
187 .volatile_reg = rt1316_volatile_register,
188 .max_register = 0x4108ffff,
189 .reg_defaults = rt1316_reg_defaults,
190 .num_reg_defaults = ARRAY_SIZE(rt1316_reg_defaults),
191 .cache_type = REGCACHE_MAPLE,
192 .use_single_read = true,
193 .use_single_write = true,
194};
195
196static int rt1316_read_prop(struct sdw_slave *slave)
197{
198 struct sdw_slave_prop *prop = &slave->prop;
199 int nval;
200 int i, j;
201 u32 bit;
202 unsigned long addr;
203 struct sdw_dpn_prop *dpn;
204
205 prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
206 prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
207
208 prop->paging_support = true;
209
210 /* first we need to allocate memory for set bits in port lists */
211 prop->source_ports = 0x04; /* BITMAP: 00000100 */
212 prop->sink_ports = 0x2; /* BITMAP: 00000010 */
213
214 nval = hweight32(prop->source_ports);
215 prop->src_dpn_prop = devm_kcalloc(dev: &slave->dev, n: nval,
216 size: sizeof(*prop->src_dpn_prop), GFP_KERNEL);
217 if (!prop->src_dpn_prop)
218 return -ENOMEM;
219
220 i = 0;
221 dpn = prop->src_dpn_prop;
222 addr = prop->source_ports;
223 for_each_set_bit(bit, &addr, 32) {
224 dpn[i].num = bit;
225 dpn[i].type = SDW_DPN_FULL;
226 dpn[i].simple_ch_prep_sm = true;
227 dpn[i].ch_prep_timeout = 10;
228 i++;
229 }
230
231 /* do this again for sink now */
232 nval = hweight32(prop->sink_ports);
233 prop->sink_dpn_prop = devm_kcalloc(dev: &slave->dev, n: nval,
234 size: sizeof(*prop->sink_dpn_prop), GFP_KERNEL);
235 if (!prop->sink_dpn_prop)
236 return -ENOMEM;
237
238 j = 0;
239 dpn = prop->sink_dpn_prop;
240 addr = prop->sink_ports;
241 for_each_set_bit(bit, &addr, 32) {
242 dpn[j].num = bit;
243 dpn[j].type = SDW_DPN_FULL;
244 dpn[j].simple_ch_prep_sm = true;
245 dpn[j].ch_prep_timeout = 10;
246 j++;
247 }
248
249 /* set the timeout values */
250 prop->clk_stop_timeout = 20;
251
252 dev_dbg(&slave->dev, "%s\n", __func__);
253
254 return 0;
255}
256
257static void rt1316_apply_bq_params(struct rt1316_sdw_priv *rt1316)
258{
259 unsigned int i, reg, data;
260
261 for (i = 0; i < rt1316->bq_params_cnt; i += 3) {
262 reg = rt1316->bq_params[i] | (rt1316->bq_params[i + 1] << 8);
263 data = rt1316->bq_params[i + 2];
264 regmap_write(map: rt1316->regmap, reg, val: data);
265 }
266}
267
268static int rt1316_io_init(struct device *dev, struct sdw_slave *slave)
269{
270 struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev);
271
272 if (rt1316->hw_init)
273 return 0;
274
275 regcache_cache_only(map: rt1316->regmap, enable: false);
276 if (rt1316->first_hw_init) {
277 regcache_cache_bypass(map: rt1316->regmap, enable: true);
278 } else {
279 /*
280 * PM runtime status is marked as 'active' only when a Slave reports as Attached
281 */
282
283 /* update count of parent 'active' children */
284 pm_runtime_set_active(dev: &slave->dev);
285 }
286
287 pm_runtime_get_noresume(dev: &slave->dev);
288
289 /* sw reset */
290 regmap_write(map: rt1316->regmap, reg: 0xc000, val: 0x02);
291
292 /* initial settings - blind write */
293 regmap_multi_reg_write(map: rt1316->regmap, regs: rt1316_blind_write,
294 ARRAY_SIZE(rt1316_blind_write));
295
296 if (rt1316->first_hw_init) {
297 regcache_cache_bypass(map: rt1316->regmap, enable: false);
298 regcache_mark_dirty(map: rt1316->regmap);
299 } else
300 rt1316->first_hw_init = true;
301
302 /* Mark Slave initialization complete */
303 rt1316->hw_init = true;
304
305 pm_runtime_mark_last_busy(dev: &slave->dev);
306 pm_runtime_put_autosuspend(dev: &slave->dev);
307
308 dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
309 return 0;
310}
311
312static int rt1316_update_status(struct sdw_slave *slave,
313 enum sdw_slave_status status)
314{
315 struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev: &slave->dev);
316
317 if (status == SDW_SLAVE_UNATTACHED)
318 rt1316->hw_init = false;
319
320 /*
321 * Perform initialization only if slave status is present and
322 * hw_init flag is false
323 */
324 if (rt1316->hw_init || status != SDW_SLAVE_ATTACHED)
325 return 0;
326
327 /* perform I/O transfers required for Slave initialization */
328 return rt1316_io_init(dev: &slave->dev, slave);
329}
330
331static int rt1316_classd_event(struct snd_soc_dapm_widget *w,
332 struct snd_kcontrol *kcontrol, int event)
333{
334 struct snd_soc_component *component =
335 snd_soc_dapm_to_component(dapm: w->dapm);
336 struct rt1316_sdw_priv *rt1316 = snd_soc_component_get_drvdata(c: component);
337 unsigned char ps0 = 0x0, ps3 = 0x3;
338
339 switch (event) {
340 case SND_SOC_DAPM_POST_PMU:
341 regmap_write(map: rt1316->regmap,
342 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE23,
343 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
344 val: ps0);
345 regmap_write(map: rt1316->regmap,
346 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE27,
347 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
348 val: ps0);
349 regmap_write(map: rt1316->regmap,
350 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE22,
351 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
352 val: ps0);
353 break;
354 case SND_SOC_DAPM_PRE_PMD:
355 regmap_write(map: rt1316->regmap,
356 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE23,
357 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
358 val: ps3);
359 regmap_write(map: rt1316->regmap,
360 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE27,
361 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
362 val: ps3);
363 regmap_write(map: rt1316->regmap,
364 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE22,
365 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
366 val: ps3);
367 break;
368
369 default:
370 break;
371 }
372
373 return 0;
374}
375
376static int rt1316_pde24_event(struct snd_soc_dapm_widget *w,
377 struct snd_kcontrol *kcontrol, int event)
378{
379 struct snd_soc_component *component =
380 snd_soc_dapm_to_component(dapm: w->dapm);
381 struct rt1316_sdw_priv *rt1316 = snd_soc_component_get_drvdata(c: component);
382 unsigned char ps0 = 0x0, ps3 = 0x3;
383
384 switch (event) {
385 case SND_SOC_DAPM_POST_PMU:
386 regmap_write(map: rt1316->regmap,
387 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE24,
388 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
389 val: ps0);
390 break;
391 case SND_SOC_DAPM_PRE_PMD:
392 regmap_write(map: rt1316->regmap,
393 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_PDE24,
394 RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
395 val: ps3);
396 break;
397 }
398 return 0;
399}
400
401static const char * const rt1316_rx_data_ch_select[] = {
402 "L,R",
403 "L,L",
404 "L,R",
405 "L,L+R",
406 "R,L",
407 "R,R",
408 "R,L+R",
409 "L+R,L",
410 "L+R,R",
411 "L+R,L+R",
412};
413
414static SOC_ENUM_SINGLE_DECL(rt1316_rx_data_ch_enum,
415 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_UDMPU21, RT1316_SDCA_CTL_UDMPU_CLUSTER, 0), 0,
416 rt1316_rx_data_ch_select);
417
418static const char * const rt1316_dac_output_vol_select[] = {
419 "immediately",
420 "zero crossing",
421 "zero crossing with soft ramp",
422};
423
424static SOC_ENUM_SINGLE_DECL(rt1316_dac_vol_ctl_enum,
425 0xc010, 6, rt1316_dac_output_vol_select);
426
427static const struct snd_kcontrol_new rt1316_snd_controls[] = {
428
429 /* I2S Data Channel Selection */
430 SOC_ENUM("RX Channel Select", rt1316_rx_data_ch_enum),
431
432 /* XU24 Bypass Control */
433 SOC_SINGLE("XU24 Bypass Switch",
434 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_XU24, RT1316_SDCA_CTL_BYPASS, 0), 0, 1, 0),
435
436 /* Left/Right IV tag */
437 SOC_SINGLE("Left V Tag Select", 0x3004, 0, 7, 0),
438 SOC_SINGLE("Left I Tag Select", 0x3004, 4, 7, 0),
439 SOC_SINGLE("Right V Tag Select", 0x3005, 0, 7, 0),
440 SOC_SINGLE("Right I Tag Select", 0x3005, 4, 7, 0),
441
442 /* IV mixer Control */
443 SOC_DOUBLE("Isense Mixer Switch", 0xc605, 2, 0, 1, 1),
444 SOC_DOUBLE("Vsense Mixer Switch", 0xc605, 3, 1, 1, 1),
445
446 /* DAC Output Volume Control */
447 SOC_ENUM("DAC Output Vol Control", rt1316_dac_vol_ctl_enum),
448};
449
450static const struct snd_kcontrol_new rt1316_sto_dac =
451 SOC_DAPM_DOUBLE_R("Switch",
452 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_L),
453 SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_R),
454 0, 1, 1);
455
456static const struct snd_soc_dapm_widget rt1316_dapm_widgets[] = {
457 /* Audio Interface */
458 SND_SOC_DAPM_AIF_IN("DP1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
459 SND_SOC_DAPM_AIF_OUT("DP2TX", "DP2 Capture", 0, SND_SOC_NOPM, 0, 0),
460
461 /* Digital Interface */
462 SND_SOC_DAPM_SWITCH("DAC", SND_SOC_NOPM, 0, 0, &rt1316_sto_dac),
463
464 /* Output Lines */
465 SND_SOC_DAPM_PGA_E("CLASS D", SND_SOC_NOPM, 0, 0, NULL, 0,
466 rt1316_classd_event,
467 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
468 SND_SOC_DAPM_OUTPUT("SPOL"),
469 SND_SOC_DAPM_OUTPUT("SPOR"),
470
471 SND_SOC_DAPM_SUPPLY("PDE 24", SND_SOC_NOPM, 0, 0,
472 rt1316_pde24_event,
473 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
474 SND_SOC_DAPM_PGA("I Sense", SND_SOC_NOPM, 0, 0, NULL, 0),
475 SND_SOC_DAPM_PGA("V Sense", SND_SOC_NOPM, 0, 0, NULL, 0),
476 SND_SOC_DAPM_SIGGEN("I Gen"),
477 SND_SOC_DAPM_SIGGEN("V Gen"),
478};
479
480static const struct snd_soc_dapm_route rt1316_dapm_routes[] = {
481 { "DAC", "Switch", "DP1RX" },
482 { "CLASS D", NULL, "DAC" },
483 { "SPOL", NULL, "CLASS D" },
484 { "SPOR", NULL, "CLASS D" },
485
486 { "I Sense", NULL, "I Gen" },
487 { "V Sense", NULL, "V Gen" },
488 { "I Sense", NULL, "PDE 24" },
489 { "V Sense", NULL, "PDE 24" },
490 { "DP2TX", NULL, "I Sense" },
491 { "DP2TX", NULL, "V Sense" },
492};
493
494static int rt1316_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
495 int direction)
496{
497 snd_soc_dai_dma_data_set(dai, stream: direction, data: sdw_stream);
498
499 return 0;
500}
501
502static void rt1316_sdw_shutdown(struct snd_pcm_substream *substream,
503 struct snd_soc_dai *dai)
504{
505 snd_soc_dai_set_dma_data(dai, substream, NULL);
506}
507
508static int rt1316_sdw_hw_params(struct snd_pcm_substream *substream,
509 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
510{
511 struct snd_soc_component *component = dai->component;
512 struct rt1316_sdw_priv *rt1316 =
513 snd_soc_component_get_drvdata(c: component);
514 struct sdw_stream_config stream_config = {0};
515 struct sdw_port_config port_config = {0};
516 struct sdw_stream_runtime *sdw_stream;
517 int retval;
518
519 dev_dbg(dai->dev, "%s %s", __func__, dai->name);
520 sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
521
522 if (!sdw_stream)
523 return -EINVAL;
524
525 if (!rt1316->sdw_slave)
526 return -EINVAL;
527
528 /* SoundWire specific configuration */
529 snd_sdw_params_to_config(substream, params, stream_config: &stream_config, port_config: &port_config);
530
531 /* port 1 for playback */
532 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
533 port_config.num = 1;
534 else
535 port_config.num = 2;
536
537 retval = sdw_stream_add_slave(slave: rt1316->sdw_slave, stream_config: &stream_config,
538 port_config: &port_config, num_ports: 1, stream: sdw_stream);
539 if (retval) {
540 dev_err(dai->dev, "%s: Unable to configure port\n", __func__);
541 return retval;
542 }
543
544 return 0;
545}
546
547static int rt1316_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
548 struct snd_soc_dai *dai)
549{
550 struct snd_soc_component *component = dai->component;
551 struct rt1316_sdw_priv *rt1316 =
552 snd_soc_component_get_drvdata(c: component);
553 struct sdw_stream_runtime *sdw_stream =
554 snd_soc_dai_get_dma_data(dai, substream);
555
556 if (!rt1316->sdw_slave)
557 return -EINVAL;
558
559 sdw_stream_remove_slave(slave: rt1316->sdw_slave, stream: sdw_stream);
560 return 0;
561}
562
563/*
564 * slave_ops: callbacks for get_clock_stop_mode, clock_stop and
565 * port_prep are not defined for now
566 */
567static const struct sdw_slave_ops rt1316_slave_ops = {
568 .read_prop = rt1316_read_prop,
569 .update_status = rt1316_update_status,
570};
571
572static int rt1316_sdw_parse_dt(struct rt1316_sdw_priv *rt1316, struct device *dev)
573{
574 int ret = 0;
575
576 device_property_read_u32(dev, propname: "realtek,bq-params-cnt", val: &rt1316->bq_params_cnt);
577 if (rt1316->bq_params_cnt) {
578 rt1316->bq_params = devm_kzalloc(dev, size: rt1316->bq_params_cnt, GFP_KERNEL);
579 if (!rt1316->bq_params) {
580 dev_err(dev, "%s: Could not allocate bq_params memory\n", __func__);
581 ret = -ENOMEM;
582 } else {
583 ret = device_property_read_u8_array(dev, propname: "realtek,bq-params", val: rt1316->bq_params, nval: rt1316->bq_params_cnt);
584 if (ret < 0)
585 dev_err(dev, "%s: Could not read list of realtek,bq-params\n", __func__);
586 }
587 }
588
589 dev_dbg(dev, "bq_params_cnt=%d\n", rt1316->bq_params_cnt);
590 return ret;
591}
592
593static int rt1316_sdw_component_probe(struct snd_soc_component *component)
594{
595 struct rt1316_sdw_priv *rt1316 = snd_soc_component_get_drvdata(c: component);
596 int ret;
597
598 rt1316->component = component;
599 rt1316_sdw_parse_dt(rt1316, dev: &rt1316->sdw_slave->dev);
600
601 if (!rt1316->first_hw_init)
602 return 0;
603
604 ret = pm_runtime_resume(dev: component->dev);
605 if (ret < 0 && ret != -EACCES)
606 return ret;
607
608 /* apply BQ params */
609 rt1316_apply_bq_params(rt1316);
610
611 return 0;
612}
613
614static const struct snd_soc_component_driver soc_component_sdw_rt1316 = {
615 .probe = rt1316_sdw_component_probe,
616 .controls = rt1316_snd_controls,
617 .num_controls = ARRAY_SIZE(rt1316_snd_controls),
618 .dapm_widgets = rt1316_dapm_widgets,
619 .num_dapm_widgets = ARRAY_SIZE(rt1316_dapm_widgets),
620 .dapm_routes = rt1316_dapm_routes,
621 .num_dapm_routes = ARRAY_SIZE(rt1316_dapm_routes),
622 .endianness = 1,
623};
624
625static const struct snd_soc_dai_ops rt1316_aif_dai_ops = {
626 .hw_params = rt1316_sdw_hw_params,
627 .hw_free = rt1316_sdw_pcm_hw_free,
628 .set_stream = rt1316_set_sdw_stream,
629 .shutdown = rt1316_sdw_shutdown,
630};
631
632#define RT1316_STEREO_RATES SNDRV_PCM_RATE_48000
633#define RT1316_FORMATS (SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE | \
634 SNDRV_PCM_FMTBIT_S24_LE)
635
636static struct snd_soc_dai_driver rt1316_sdw_dai[] = {
637 {
638 .name = "rt1316-aif",
639 .playback = {
640 .stream_name = "DP1 Playback",
641 .channels_min = 1,
642 .channels_max = 2,
643 .rates = RT1316_STEREO_RATES,
644 .formats = RT1316_FORMATS,
645 },
646 .capture = {
647 .stream_name = "DP2 Capture",
648 .channels_min = 1,
649 .channels_max = 2,
650 .rates = RT1316_STEREO_RATES,
651 .formats = RT1316_FORMATS,
652 },
653 .ops = &rt1316_aif_dai_ops,
654 },
655};
656
657static int rt1316_sdw_init(struct device *dev, struct regmap *regmap,
658 struct sdw_slave *slave)
659{
660 struct rt1316_sdw_priv *rt1316;
661 int ret;
662
663 rt1316 = devm_kzalloc(dev, size: sizeof(*rt1316), GFP_KERNEL);
664 if (!rt1316)
665 return -ENOMEM;
666
667 dev_set_drvdata(dev, data: rt1316);
668 rt1316->sdw_slave = slave;
669 rt1316->regmap = regmap;
670
671 regcache_cache_only(map: rt1316->regmap, enable: true);
672
673 /*
674 * Mark hw_init to false
675 * HW init will be performed when device reports present
676 */
677 rt1316->hw_init = false;
678 rt1316->first_hw_init = false;
679
680 ret = devm_snd_soc_register_component(dev,
681 component_driver: &soc_component_sdw_rt1316,
682 dai_drv: rt1316_sdw_dai,
683 ARRAY_SIZE(rt1316_sdw_dai));
684 if (ret < 0)
685 return ret;
686
687 /* set autosuspend parameters */
688 pm_runtime_set_autosuspend_delay(dev, delay: 3000);
689 pm_runtime_use_autosuspend(dev);
690
691 /* make sure the device does not suspend immediately */
692 pm_runtime_mark_last_busy(dev);
693
694 pm_runtime_enable(dev);
695
696 /* important note: the device is NOT tagged as 'active' and will remain
697 * 'suspended' until the hardware is enumerated/initialized. This is required
698 * to make sure the ASoC framework use of pm_runtime_get_sync() does not silently
699 * fail with -EACCESS because of race conditions between card creation and enumeration
700 */
701
702 dev_dbg(dev, "%s\n", __func__);
703
704 return 0;
705}
706
707static int rt1316_sdw_probe(struct sdw_slave *slave,
708 const struct sdw_device_id *id)
709{
710 struct regmap *regmap;
711
712 /* Regmap Initialization */
713 regmap = devm_regmap_init_sdw(slave, &rt1316_sdw_regmap);
714 if (IS_ERR(ptr: regmap))
715 return PTR_ERR(ptr: regmap);
716
717 return rt1316_sdw_init(dev: &slave->dev, regmap, slave);
718}
719
720static int rt1316_sdw_remove(struct sdw_slave *slave)
721{
722 pm_runtime_disable(dev: &slave->dev);
723
724 return 0;
725}
726
727static const struct sdw_device_id rt1316_id[] = {
728 SDW_SLAVE_ENTRY_EXT(0x025d, 0x1316, 0x3, 0x1, 0),
729 {},
730};
731MODULE_DEVICE_TABLE(sdw, rt1316_id);
732
733static int rt1316_dev_suspend(struct device *dev)
734{
735 struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev);
736
737 if (!rt1316->hw_init)
738 return 0;
739
740 regcache_cache_only(map: rt1316->regmap, enable: true);
741
742 return 0;
743}
744
745#define RT1316_PROBE_TIMEOUT 5000
746
747static int rt1316_dev_resume(struct device *dev)
748{
749 struct sdw_slave *slave = dev_to_sdw_dev(dev);
750 struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev);
751 unsigned long time;
752
753 if (!rt1316->first_hw_init)
754 return 0;
755
756 if (!slave->unattach_request)
757 goto regmap_sync;
758
759 time = wait_for_completion_timeout(x: &slave->initialization_complete,
760 timeout: msecs_to_jiffies(RT1316_PROBE_TIMEOUT));
761 if (!time) {
762 dev_err(&slave->dev, "%s: Initialization not complete, timed out\n", __func__);
763 sdw_show_ping_status(bus: slave->bus, sync_delay: true);
764
765 return -ETIMEDOUT;
766 }
767
768regmap_sync:
769 slave->unattach_request = 0;
770 regcache_cache_only(map: rt1316->regmap, enable: false);
771 regcache_sync(map: rt1316->regmap);
772
773 return 0;
774}
775
776static const struct dev_pm_ops rt1316_pm = {
777 SYSTEM_SLEEP_PM_OPS(rt1316_dev_suspend, rt1316_dev_resume)
778 RUNTIME_PM_OPS(rt1316_dev_suspend, rt1316_dev_resume, NULL)
779};
780
781static struct sdw_driver rt1316_sdw_driver = {
782 .driver = {
783 .name = "rt1316-sdca",
784 .pm = pm_ptr(&rt1316_pm),
785 },
786 .probe = rt1316_sdw_probe,
787 .remove = rt1316_sdw_remove,
788 .ops = &rt1316_slave_ops,
789 .id_table = rt1316_id,
790};
791module_sdw_driver(rt1316_sdw_driver);
792
793MODULE_DESCRIPTION("ASoC RT1316 driver SDCA SDW");
794MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
795MODULE_LICENSE("GPL");
796

source code of linux/sound/soc/codecs/rt1316-sdw.c