1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Driver for Cirrus Logic CS35L56 smart amp
4 //
5 // Copyright (C) 2023 Cirrus Logic, Inc. and
6 // Cirrus Logic International Semiconductor Ltd.
7
8 #include <linux/acpi.h>
9 #include <linux/array_size.h>
10 #include <linux/completion.h>
11 #include <linux/debugfs.h>
12 #include <linux/delay.h>
13 #include <linux/err.h>
14 #include <linux/gpio/consumer.h>
15 #include <linux/interrupt.h>
16 #include <linux/math.h>
17 #include <linux/module.h>
18 #include <linux/pm.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/property.h>
21 #include <linux/regmap.h>
22 #include <linux/regulator/consumer.h>
23 #include <linux/slab.h>
24 #include <linux/soundwire/sdw.h>
25 #include <linux/types.h>
26 #include <linux/workqueue.h>
27 #include <sound/cs-amp-lib.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/soc.h>
31 #include <sound/soc-dapm.h>
32 #include <sound/tlv.h>
33
34 #include "wm_adsp.h"
35 #include "cs35l56.h"
36
37 static int cs35l56_dsp_event(struct snd_soc_dapm_widget *w,
38 struct snd_kcontrol *kcontrol, int event);
39
cs35l56_wait_dsp_ready(struct cs35l56_private * cs35l56)40 static void cs35l56_wait_dsp_ready(struct cs35l56_private *cs35l56)
41 {
42 /* Wait for patching to complete */
43 flush_work(&cs35l56->dsp_work);
44 }
45
cs35l56_dspwait_get_volsw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)46 static int cs35l56_dspwait_get_volsw(struct snd_kcontrol *kcontrol,
47 struct snd_ctl_elem_value *ucontrol)
48 {
49 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
50 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component);
51
52 cs35l56_wait_dsp_ready(cs35l56);
53 return snd_soc_get_volsw(kcontrol, ucontrol);
54 }
55
cs35l56_dspwait_put_volsw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)56 static int cs35l56_dspwait_put_volsw(struct snd_kcontrol *kcontrol,
57 struct snd_ctl_elem_value *ucontrol)
58 {
59 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
60 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component);
61
62 cs35l56_wait_dsp_ready(cs35l56);
63 return snd_soc_put_volsw(kcontrol, ucontrol);
64 }
65
66 static DECLARE_TLV_DB_SCALE(vol_tlv, -10000, 25, 0);
67
68 static const struct snd_kcontrol_new cs35l56_controls[] = {
69 SOC_SINGLE_EXT("Speaker Switch",
70 CS35L56_MAIN_RENDER_USER_MUTE, 0, 1, 1,
71 cs35l56_dspwait_get_volsw, cs35l56_dspwait_put_volsw),
72 SOC_SINGLE_S_EXT_TLV("Speaker Volume",
73 CS35L56_MAIN_RENDER_USER_VOLUME,
74 CS35L56_MAIN_RENDER_USER_VOLUME_SHIFT,
75 CS35L56_MAIN_RENDER_USER_VOLUME_MIN,
76 CS35L56_MAIN_RENDER_USER_VOLUME_MAX,
77 CS35L56_MAIN_RENDER_USER_VOLUME_SIGNBIT,
78 0,
79 cs35l56_dspwait_get_volsw,
80 cs35l56_dspwait_put_volsw,
81 vol_tlv),
82 SOC_SINGLE_EXT("Posture Number", CS35L56_MAIN_POSTURE_NUMBER,
83 0, 255, 0,
84 cs35l56_dspwait_get_volsw, cs35l56_dspwait_put_volsw),
85 };
86
87 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_asp1tx1_enum,
88 CS35L56_ASP1TX1_INPUT,
89 0, CS35L56_ASP_TXn_SRC_MASK,
90 cs35l56_tx_input_texts,
91 cs35l56_tx_input_values);
92
93 static const struct snd_kcontrol_new asp1_tx1_mux =
94 SOC_DAPM_ENUM("ASP1TX1 SRC", cs35l56_asp1tx1_enum);
95
96 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_asp1tx2_enum,
97 CS35L56_ASP1TX2_INPUT,
98 0, CS35L56_ASP_TXn_SRC_MASK,
99 cs35l56_tx_input_texts,
100 cs35l56_tx_input_values);
101
102 static const struct snd_kcontrol_new asp1_tx2_mux =
103 SOC_DAPM_ENUM("ASP1TX2 SRC", cs35l56_asp1tx2_enum);
104
105 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_asp1tx3_enum,
106 CS35L56_ASP1TX3_INPUT,
107 0, CS35L56_ASP_TXn_SRC_MASK,
108 cs35l56_tx_input_texts,
109 cs35l56_tx_input_values);
110
111 static const struct snd_kcontrol_new asp1_tx3_mux =
112 SOC_DAPM_ENUM("ASP1TX3 SRC", cs35l56_asp1tx3_enum);
113
114 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_asp1tx4_enum,
115 CS35L56_ASP1TX4_INPUT,
116 0, CS35L56_ASP_TXn_SRC_MASK,
117 cs35l56_tx_input_texts,
118 cs35l56_tx_input_values);
119
120 static const struct snd_kcontrol_new asp1_tx4_mux =
121 SOC_DAPM_ENUM("ASP1TX4 SRC", cs35l56_asp1tx4_enum);
122
123 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_sdw1tx1_enum,
124 CS35L56_SWIRE_DP3_CH1_INPUT,
125 0, CS35L56_SWIRETXn_SRC_MASK,
126 cs35l56_tx_input_texts,
127 cs35l56_tx_input_values);
128
129 static const struct snd_kcontrol_new sdw1_tx1_mux =
130 SOC_DAPM_ENUM("SDW1TX1 SRC", cs35l56_sdw1tx1_enum);
131
132 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_sdw1tx2_enum,
133 CS35L56_SWIRE_DP3_CH2_INPUT,
134 0, CS35L56_SWIRETXn_SRC_MASK,
135 cs35l56_tx_input_texts,
136 cs35l56_tx_input_values);
137
138 static const struct snd_kcontrol_new sdw1_tx2_mux =
139 SOC_DAPM_ENUM("SDW1TX2 SRC", cs35l56_sdw1tx2_enum);
140
141 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_sdw1tx3_enum,
142 CS35L56_SWIRE_DP3_CH3_INPUT,
143 0, CS35L56_SWIRETXn_SRC_MASK,
144 cs35l56_tx_input_texts,
145 cs35l56_tx_input_values);
146
147 static const struct snd_kcontrol_new sdw1_tx3_mux =
148 SOC_DAPM_ENUM("SDW1TX3 SRC", cs35l56_sdw1tx3_enum);
149
150 static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_sdw1tx4_enum,
151 CS35L56_SWIRE_DP3_CH4_INPUT,
152 0, CS35L56_SWIRETXn_SRC_MASK,
153 cs35l56_tx_input_texts,
154 cs35l56_tx_input_values);
155
156 static const struct snd_kcontrol_new sdw1_tx4_mux =
157 SOC_DAPM_ENUM("SDW1TX4 SRC", cs35l56_sdw1tx4_enum);
158
cs35l56_play_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)159 static int cs35l56_play_event(struct snd_soc_dapm_widget *w,
160 struct snd_kcontrol *kcontrol, int event)
161 {
162 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
163 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component);
164 unsigned int val;
165 int ret;
166
167 dev_dbg(cs35l56->base.dev, "play: %d\n", event);
168
169 switch (event) {
170 case SND_SOC_DAPM_PRE_PMU:
171 /* Don't wait for ACK, we check in POST_PMU that it completed */
172 return regmap_write(cs35l56->base.regmap, CS35L56_DSP_VIRTUAL1_MBOX_1,
173 CS35L56_MBOX_CMD_AUDIO_PLAY);
174 case SND_SOC_DAPM_POST_PMU:
175 /* Wait for firmware to enter PS0 power state */
176 ret = regmap_read_poll_timeout(cs35l56->base.regmap,
177 CS35L56_TRANSDUCER_ACTUAL_PS,
178 val, (val == CS35L56_PS0),
179 CS35L56_PS0_POLL_US,
180 CS35L56_PS0_TIMEOUT_US);
181 if (ret)
182 dev_err(cs35l56->base.dev, "PS0 wait failed: %d\n", ret);
183 return ret;
184 case SND_SOC_DAPM_POST_PMD:
185 return cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_AUDIO_PAUSE);
186 default:
187 return 0;
188 }
189 }
190
191 static const struct snd_soc_dapm_widget cs35l56_dapm_widgets[] = {
192 SND_SOC_DAPM_REGULATOR_SUPPLY("VDD_B", 0, 0),
193 SND_SOC_DAPM_REGULATOR_SUPPLY("VDD_AMP", 0, 0),
194
195 SND_SOC_DAPM_SUPPLY("PLAY", SND_SOC_NOPM, 0, 0, cs35l56_play_event,
196 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
197
198 SND_SOC_DAPM_OUT_DRV("AMP", SND_SOC_NOPM, 0, 0, NULL, 0),
199 SND_SOC_DAPM_OUTPUT("SPK"),
200
201 SND_SOC_DAPM_PGA_E("DSP1", SND_SOC_NOPM, 0, 0, NULL, 0, cs35l56_dsp_event,
202 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
203
204 SND_SOC_DAPM_AIF_IN("ASP1RX1", NULL, 0, CS35L56_ASP1_ENABLES1,
205 CS35L56_ASP_RX1_EN_SHIFT, 0),
206 SND_SOC_DAPM_AIF_IN("ASP1RX2", NULL, 1, CS35L56_ASP1_ENABLES1,
207 CS35L56_ASP_RX2_EN_SHIFT, 0),
208 SND_SOC_DAPM_AIF_OUT("ASP1TX1", NULL, 0, CS35L56_ASP1_ENABLES1,
209 CS35L56_ASP_TX1_EN_SHIFT, 0),
210 SND_SOC_DAPM_AIF_OUT("ASP1TX2", NULL, 1, CS35L56_ASP1_ENABLES1,
211 CS35L56_ASP_TX2_EN_SHIFT, 0),
212 SND_SOC_DAPM_AIF_OUT("ASP1TX3", NULL, 2, CS35L56_ASP1_ENABLES1,
213 CS35L56_ASP_TX3_EN_SHIFT, 0),
214 SND_SOC_DAPM_AIF_OUT("ASP1TX4", NULL, 3, CS35L56_ASP1_ENABLES1,
215 CS35L56_ASP_TX4_EN_SHIFT, 0),
216
217 SND_SOC_DAPM_MUX("ASP1 TX1 Source", SND_SOC_NOPM, 0, 0, &asp1_tx1_mux),
218 SND_SOC_DAPM_MUX("ASP1 TX2 Source", SND_SOC_NOPM, 0, 0, &asp1_tx2_mux),
219 SND_SOC_DAPM_MUX("ASP1 TX3 Source", SND_SOC_NOPM, 0, 0, &asp1_tx3_mux),
220 SND_SOC_DAPM_MUX("ASP1 TX4 Source", SND_SOC_NOPM, 0, 0, &asp1_tx4_mux),
221
222 SND_SOC_DAPM_MUX("SDW1 TX1 Source", SND_SOC_NOPM, 0, 0, &sdw1_tx1_mux),
223 SND_SOC_DAPM_MUX("SDW1 TX2 Source", SND_SOC_NOPM, 0, 0, &sdw1_tx2_mux),
224 SND_SOC_DAPM_MUX("SDW1 TX3 Source", SND_SOC_NOPM, 0, 0, &sdw1_tx3_mux),
225 SND_SOC_DAPM_MUX("SDW1 TX4 Source", SND_SOC_NOPM, 0, 0, &sdw1_tx4_mux),
226
227 SND_SOC_DAPM_SIGGEN("VMON ADC"),
228 SND_SOC_DAPM_SIGGEN("IMON ADC"),
229 SND_SOC_DAPM_SIGGEN("ERRVOL ADC"),
230 SND_SOC_DAPM_SIGGEN("CLASSH ADC"),
231 SND_SOC_DAPM_SIGGEN("VDDBMON ADC"),
232 SND_SOC_DAPM_SIGGEN("VBSTMON ADC"),
233 SND_SOC_DAPM_SIGGEN("TEMPMON ADC"),
234 };
235
236 #define CS35L56_SRC_ROUTE(name) \
237 { name" Source", "ASP1RX1", "ASP1RX1" }, \
238 { name" Source", "ASP1RX2", "ASP1RX2" }, \
239 { name" Source", "VMON", "VMON ADC" }, \
240 { name" Source", "IMON", "IMON ADC" }, \
241 { name" Source", "ERRVOL", "ERRVOL ADC" }, \
242 { name" Source", "CLASSH", "CLASSH ADC" }, \
243 { name" Source", "VDDBMON", "VDDBMON ADC" }, \
244 { name" Source", "VBSTMON", "VBSTMON ADC" }, \
245 { name" Source", "DSP1TX1", "DSP1" }, \
246 { name" Source", "DSP1TX2", "DSP1" }, \
247 { name" Source", "DSP1TX3", "DSP1" }, \
248 { name" Source", "DSP1TX4", "DSP1" }, \
249 { name" Source", "DSP1TX5", "DSP1" }, \
250 { name" Source", "DSP1TX6", "DSP1" }, \
251 { name" Source", "DSP1TX7", "DSP1" }, \
252 { name" Source", "DSP1TX8", "DSP1" }, \
253 { name" Source", "TEMPMON", "TEMPMON ADC" }, \
254 { name" Source", "INTERPOLATOR", "AMP" }, \
255 { name" Source", "SDW1RX1", "SDW1 Playback" }, \
256 { name" Source", "SDW1RX2", "SDW1 Playback" },
257
258 static const struct snd_soc_dapm_route cs35l56_audio_map[] = {
259 { "AMP", NULL, "VDD_B" },
260 { "AMP", NULL, "VDD_AMP" },
261
262 { "ASP1 Playback", NULL, "PLAY" },
263 { "SDW1 Playback", NULL, "PLAY" },
264
265 { "ASP1RX1", NULL, "ASP1 Playback" },
266 { "ASP1RX2", NULL, "ASP1 Playback" },
267 { "DSP1", NULL, "ASP1RX1" },
268 { "DSP1", NULL, "ASP1RX2" },
269 { "DSP1", NULL, "SDW1 Playback" },
270 { "AMP", NULL, "DSP1" },
271 { "SPK", NULL, "AMP" },
272
273 CS35L56_SRC_ROUTE("ASP1 TX1")
274 CS35L56_SRC_ROUTE("ASP1 TX2")
275 CS35L56_SRC_ROUTE("ASP1 TX3")
276 CS35L56_SRC_ROUTE("ASP1 TX4")
277
278 { "ASP1TX1", NULL, "ASP1 TX1 Source" },
279 { "ASP1TX2", NULL, "ASP1 TX2 Source" },
280 { "ASP1TX3", NULL, "ASP1 TX3 Source" },
281 { "ASP1TX4", NULL, "ASP1 TX4 Source" },
282 { "ASP1 Capture", NULL, "ASP1TX1" },
283 { "ASP1 Capture", NULL, "ASP1TX2" },
284 { "ASP1 Capture", NULL, "ASP1TX3" },
285 { "ASP1 Capture", NULL, "ASP1TX4" },
286
287 CS35L56_SRC_ROUTE("SDW1 TX1")
288 CS35L56_SRC_ROUTE("SDW1 TX2")
289 CS35L56_SRC_ROUTE("SDW1 TX3")
290 CS35L56_SRC_ROUTE("SDW1 TX4")
291 { "SDW1 Capture", NULL, "SDW1 TX1 Source" },
292 { "SDW1 Capture", NULL, "SDW1 TX2 Source" },
293 { "SDW1 Capture", NULL, "SDW1 TX3 Source" },
294 { "SDW1 Capture", NULL, "SDW1 TX4 Source" },
295 };
296
cs35l56_dsp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)297 static int cs35l56_dsp_event(struct snd_soc_dapm_widget *w,
298 struct snd_kcontrol *kcontrol, int event)
299 {
300 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
301 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component);
302
303 dev_dbg(cs35l56->base.dev, "%s: %d\n", __func__, event);
304
305 return wm_adsp_event(w, kcontrol, event);
306 }
307
cs35l56_asp_dai_set_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)308 static int cs35l56_asp_dai_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
309 {
310 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(codec_dai->component);
311 unsigned int val;
312
313 dev_dbg(cs35l56->base.dev, "%s: %#x\n", __func__, fmt);
314
315 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
316 case SND_SOC_DAIFMT_CBC_CFC:
317 break;
318 default:
319 dev_err(cs35l56->base.dev, "Unsupported clock source mode\n");
320 return -EINVAL;
321 }
322
323 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
324 case SND_SOC_DAIFMT_DSP_A:
325 val = CS35L56_ASP_FMT_DSP_A << CS35L56_ASP_FMT_SHIFT;
326 cs35l56->tdm_mode = true;
327 break;
328 case SND_SOC_DAIFMT_I2S:
329 val = CS35L56_ASP_FMT_I2S << CS35L56_ASP_FMT_SHIFT;
330 cs35l56->tdm_mode = false;
331 break;
332 default:
333 dev_err(cs35l56->base.dev, "Unsupported DAI format\n");
334 return -EINVAL;
335 }
336
337 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
338 case SND_SOC_DAIFMT_NB_IF:
339 val |= CS35L56_ASP_FSYNC_INV_MASK;
340 break;
341 case SND_SOC_DAIFMT_IB_NF:
342 val |= CS35L56_ASP_BCLK_INV_MASK;
343 break;
344 case SND_SOC_DAIFMT_IB_IF:
345 val |= CS35L56_ASP_BCLK_INV_MASK | CS35L56_ASP_FSYNC_INV_MASK;
346 break;
347 case SND_SOC_DAIFMT_NB_NF:
348 break;
349 default:
350 dev_err(cs35l56->base.dev, "Invalid clock invert\n");
351 return -EINVAL;
352 }
353
354 regmap_update_bits(cs35l56->base.regmap,
355 CS35L56_ASP1_CONTROL2,
356 CS35L56_ASP_FMT_MASK |
357 CS35L56_ASP_BCLK_INV_MASK | CS35L56_ASP_FSYNC_INV_MASK,
358 val);
359
360 /* Hi-Z DOUT in unused slots and when all TX are disabled */
361 regmap_update_bits(cs35l56->base.regmap, CS35L56_ASP1_CONTROL3,
362 CS35L56_ASP1_DOUT_HIZ_CTRL_MASK,
363 CS35L56_ASP_UNUSED_HIZ_OFF_HIZ);
364
365 return 0;
366 }
367
cs35l56_make_tdm_config_word(unsigned int reg_val,unsigned long mask)368 static unsigned int cs35l56_make_tdm_config_word(unsigned int reg_val, unsigned long mask)
369 {
370 unsigned int channel_shift;
371 int bit_num;
372
373 /* Enable consecutive TX1..TXn for each of the slots set in mask */
374 channel_shift = 0;
375 for_each_set_bit(bit_num, &mask, 32) {
376 reg_val &= ~(0x3f << channel_shift);
377 reg_val |= bit_num << channel_shift;
378 channel_shift += 8;
379 }
380
381 return reg_val;
382 }
383
cs35l56_asp_dai_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)384 static int cs35l56_asp_dai_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
385 unsigned int rx_mask, int slots, int slot_width)
386 {
387 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(dai->component);
388
389 if ((slots == 0) || (slot_width == 0)) {
390 dev_dbg(cs35l56->base.dev, "tdm config cleared\n");
391 cs35l56->asp_slot_width = 0;
392 cs35l56->asp_slot_count = 0;
393 return 0;
394 }
395
396 if (slot_width > (CS35L56_ASP_RX_WIDTH_MASK >> CS35L56_ASP_RX_WIDTH_SHIFT)) {
397 dev_err(cs35l56->base.dev, "tdm invalid slot width %d\n", slot_width);
398 return -EINVAL;
399 }
400
401 /* More than 32 slots would give an unsupportable BCLK frequency */
402 if (slots > 32) {
403 dev_err(cs35l56->base.dev, "tdm invalid slot count %d\n", slots);
404 return -EINVAL;
405 }
406
407 cs35l56->asp_slot_width = (u8)slot_width;
408 cs35l56->asp_slot_count = (u8)slots;
409
410 // Note: rx/tx is from point of view of the CPU end
411 if (tx_mask == 0)
412 tx_mask = 0x3; // ASPRX1/RX2 in slots 0 and 1
413
414 if (rx_mask == 0)
415 rx_mask = 0xf; // ASPTX1..TX4 in slots 0..3
416
417 /* Default unused slots to 63 */
418 regmap_write(cs35l56->base.regmap, CS35L56_ASP1_FRAME_CONTROL1,
419 cs35l56_make_tdm_config_word(0x3f3f3f3f, rx_mask));
420 regmap_write(cs35l56->base.regmap, CS35L56_ASP1_FRAME_CONTROL5,
421 cs35l56_make_tdm_config_word(0x3f3f3f, tx_mask));
422
423 dev_dbg(cs35l56->base.dev, "tdm slot width: %u count: %u tx_mask: %#x rx_mask: %#x\n",
424 cs35l56->asp_slot_width, cs35l56->asp_slot_count, tx_mask, rx_mask);
425
426 return 0;
427 }
428
cs35l56_asp_dai_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)429 static int cs35l56_asp_dai_hw_params(struct snd_pcm_substream *substream,
430 struct snd_pcm_hw_params *params,
431 struct snd_soc_dai *dai)
432 {
433 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(dai->component);
434 unsigned int rate = params_rate(params);
435 u8 asp_width, asp_wl;
436
437 asp_wl = params_width(params);
438 if (cs35l56->asp_slot_width)
439 asp_width = cs35l56->asp_slot_width;
440 else
441 asp_width = asp_wl;
442
443 dev_dbg(cs35l56->base.dev, "%s: wl=%d, width=%d, rate=%d",
444 __func__, asp_wl, asp_width, rate);
445
446 if (!cs35l56->sysclk_set) {
447 unsigned int slots = cs35l56->asp_slot_count;
448 unsigned int bclk_freq;
449 int freq_id;
450
451 if (slots == 0) {
452 slots = params_channels(params);
453
454 /* I2S always has an even number of slots */
455 if (!cs35l56->tdm_mode)
456 slots = round_up(slots, 2);
457 }
458
459 bclk_freq = asp_width * slots * rate;
460 freq_id = cs35l56_get_bclk_freq_id(bclk_freq);
461 if (freq_id < 0) {
462 dev_err(cs35l56->base.dev, "%s: Invalid BCLK %u\n", __func__, bclk_freq);
463 return -EINVAL;
464 }
465
466 regmap_update_bits(cs35l56->base.regmap, CS35L56_ASP1_CONTROL1,
467 CS35L56_ASP_BCLK_FREQ_MASK,
468 freq_id << CS35L56_ASP_BCLK_FREQ_SHIFT);
469 }
470
471 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
472 regmap_update_bits(cs35l56->base.regmap, CS35L56_ASP1_CONTROL2,
473 CS35L56_ASP_RX_WIDTH_MASK, asp_width <<
474 CS35L56_ASP_RX_WIDTH_SHIFT);
475 regmap_update_bits(cs35l56->base.regmap, CS35L56_ASP1_DATA_CONTROL5,
476 CS35L56_ASP_RX_WL_MASK, asp_wl);
477 } else {
478 regmap_update_bits(cs35l56->base.regmap, CS35L56_ASP1_CONTROL2,
479 CS35L56_ASP_TX_WIDTH_MASK, asp_width <<
480 CS35L56_ASP_TX_WIDTH_SHIFT);
481 regmap_update_bits(cs35l56->base.regmap, CS35L56_ASP1_DATA_CONTROL1,
482 CS35L56_ASP_TX_WL_MASK, asp_wl);
483 }
484
485 return 0;
486 }
487
cs35l56_asp_dai_set_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)488 static int cs35l56_asp_dai_set_sysclk(struct snd_soc_dai *dai,
489 int clk_id, unsigned int freq, int dir)
490 {
491 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(dai->component);
492 int freq_id;
493
494 if (freq == 0) {
495 cs35l56->sysclk_set = false;
496 return 0;
497 }
498
499 freq_id = cs35l56_get_bclk_freq_id(freq);
500 if (freq_id < 0)
501 return freq_id;
502
503 regmap_update_bits(cs35l56->base.regmap, CS35L56_ASP1_CONTROL1,
504 CS35L56_ASP_BCLK_FREQ_MASK,
505 freq_id << CS35L56_ASP_BCLK_FREQ_SHIFT);
506 cs35l56->sysclk_set = true;
507
508 return 0;
509 }
510
511 static const struct snd_soc_dai_ops cs35l56_ops = {
512 .set_fmt = cs35l56_asp_dai_set_fmt,
513 .set_tdm_slot = cs35l56_asp_dai_set_tdm_slot,
514 .hw_params = cs35l56_asp_dai_hw_params,
515 .set_sysclk = cs35l56_asp_dai_set_sysclk,
516 };
517
cs35l56_sdw_dai_shutdown(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)518 static void cs35l56_sdw_dai_shutdown(struct snd_pcm_substream *substream,
519 struct snd_soc_dai *dai)
520 {
521 snd_soc_dai_set_dma_data(dai, substream, NULL);
522 }
523
cs35l56_sdw_dai_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)524 static int cs35l56_sdw_dai_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
525 unsigned int rx_mask, int slots, int slot_width)
526 {
527 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(dai->component);
528
529 /* rx/tx are from point of view of the CPU end so opposite to our rx/tx */
530 cs35l56->rx_mask = tx_mask;
531 cs35l56->tx_mask = rx_mask;
532
533 return 0;
534 }
535
cs35l56_sdw_dai_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)536 static int cs35l56_sdw_dai_hw_params(struct snd_pcm_substream *substream,
537 struct snd_pcm_hw_params *params,
538 struct snd_soc_dai *dai)
539 {
540 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(dai->component);
541 struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
542 struct sdw_stream_config sconfig;
543 struct sdw_port_config pconfig;
544 int ret;
545
546 dev_dbg(cs35l56->base.dev, "%s: rate %d\n", __func__, params_rate(params));
547
548 if (!cs35l56->base.init_done)
549 return -ENODEV;
550
551 if (!sdw_stream)
552 return -EINVAL;
553
554 memset(&sconfig, 0, sizeof(sconfig));
555 memset(&pconfig, 0, sizeof(pconfig));
556
557 sconfig.frame_rate = params_rate(params);
558 sconfig.bps = snd_pcm_format_width(params_format(params));
559
560 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
561 sconfig.direction = SDW_DATA_DIR_RX;
562 pconfig.num = CS35L56_SDW1_PLAYBACK_PORT;
563 pconfig.ch_mask = cs35l56->rx_mask;
564 } else {
565 sconfig.direction = SDW_DATA_DIR_TX;
566 pconfig.num = CS35L56_SDW1_CAPTURE_PORT;
567 pconfig.ch_mask = cs35l56->tx_mask;
568 }
569
570 if (pconfig.ch_mask == 0) {
571 sconfig.ch_count = params_channels(params);
572 pconfig.ch_mask = GENMASK(sconfig.ch_count - 1, 0);
573 } else {
574 sconfig.ch_count = hweight32(pconfig.ch_mask);
575 }
576
577 ret = sdw_stream_add_slave(cs35l56->sdw_peripheral, &sconfig, &pconfig,
578 1, sdw_stream);
579 if (ret) {
580 dev_err(dai->dev, "Failed to add sdw stream: %d\n", ret);
581 return ret;
582 }
583
584 return 0;
585 }
586
cs35l56_sdw_dai_hw_free(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)587 static int cs35l56_sdw_dai_hw_free(struct snd_pcm_substream *substream,
588 struct snd_soc_dai *dai)
589 {
590 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(dai->component);
591 struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
592
593 if (!cs35l56->sdw_peripheral)
594 return -EINVAL;
595
596 sdw_stream_remove_slave(cs35l56->sdw_peripheral, sdw_stream);
597
598 return 0;
599 }
600
cs35l56_sdw_dai_set_stream(struct snd_soc_dai * dai,void * sdw_stream,int direction)601 static int cs35l56_sdw_dai_set_stream(struct snd_soc_dai *dai,
602 void *sdw_stream, int direction)
603 {
604 snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
605
606 return 0;
607 }
608
609 static const struct snd_soc_dai_ops cs35l56_sdw_dai_ops = {
610 .set_tdm_slot = cs35l56_sdw_dai_set_tdm_slot,
611 .shutdown = cs35l56_sdw_dai_shutdown,
612 .hw_params = cs35l56_sdw_dai_hw_params,
613 .hw_free = cs35l56_sdw_dai_hw_free,
614 .set_stream = cs35l56_sdw_dai_set_stream,
615 };
616
617 static struct snd_soc_dai_driver cs35l56_dai[] = {
618 {
619 .name = "cs35l56-asp1",
620 .id = 0,
621 .playback = {
622 .stream_name = "ASP1 Playback",
623 .channels_min = 1,
624 .channels_max = 2,
625 .rates = CS35L56_RATES,
626 .formats = CS35L56_RX_FORMATS,
627 },
628 .capture = {
629 .stream_name = "ASP1 Capture",
630 .channels_min = 1,
631 .channels_max = 4,
632 .rates = CS35L56_RATES,
633 .formats = CS35L56_TX_FORMATS,
634 },
635 .ops = &cs35l56_ops,
636 .symmetric_rate = 1,
637 .symmetric_sample_bits = 1,
638 },
639 {
640 .name = "cs35l56-sdw1",
641 .id = 1,
642 .playback = {
643 .stream_name = "SDW1 Playback",
644 .channels_min = 1,
645 .channels_max = 2,
646 .rates = CS35L56_RATES,
647 .formats = CS35L56_RX_FORMATS,
648 },
649 .capture = {
650 .stream_name = "SDW1 Capture",
651 .channels_min = 1,
652 .channels_max = 4,
653 .rates = CS35L56_RATES,
654 .formats = CS35L56_TX_FORMATS,
655 },
656 .symmetric_rate = 1,
657 .ops = &cs35l56_sdw_dai_ops,
658 }
659 };
660
cs35l56_write_cal(struct cs35l56_private * cs35l56)661 static int cs35l56_write_cal(struct cs35l56_private *cs35l56)
662 {
663 int ret;
664
665 if (cs35l56->base.secured || !cs35l56->base.cal_data_valid)
666 return -ENODATA;
667
668 ret = wm_adsp_run(&cs35l56->dsp);
669 if (ret)
670 return ret;
671
672 ret = cs_amp_write_cal_coeffs(&cs35l56->dsp.cs_dsp,
673 &cs35l56_calibration_controls,
674 &cs35l56->base.cal_data);
675
676 wm_adsp_stop(&cs35l56->dsp);
677
678 if (ret == 0)
679 dev_info(cs35l56->base.dev, "Calibration applied\n");
680
681 return ret;
682 }
683
cs35l56_reinit_patch(struct cs35l56_private * cs35l56)684 static void cs35l56_reinit_patch(struct cs35l56_private *cs35l56)
685 {
686 int ret;
687
688 /* Use wm_adsp to load and apply the firmware patch and coefficient files */
689 ret = wm_adsp_power_up(&cs35l56->dsp, true);
690 if (ret) {
691 dev_dbg(cs35l56->base.dev, "%s: wm_adsp_power_up ret %d\n", __func__, ret);
692 return;
693 }
694
695 cs35l56_write_cal(cs35l56);
696
697 /* Always REINIT after applying patch or coefficients */
698 cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_AUDIO_REINIT);
699 }
700
cs35l56_patch(struct cs35l56_private * cs35l56,bool firmware_missing)701 static void cs35l56_patch(struct cs35l56_private *cs35l56, bool firmware_missing)
702 {
703 int ret;
704
705 /*
706 * Disable SoundWire interrupts to prevent race with IRQ work.
707 * Setting sdw_irq_no_unmask prevents the handler re-enabling
708 * the SoundWire interrupt.
709 */
710 if (cs35l56->sdw_peripheral) {
711 cs35l56->sdw_irq_no_unmask = true;
712 flush_work(&cs35l56->sdw_irq_work);
713 sdw_write_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_MASK_1, 0);
714 sdw_read_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_STAT_1);
715 sdw_write_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_STAT_1, 0xFF);
716 flush_work(&cs35l56->sdw_irq_work);
717 }
718
719 ret = cs35l56_firmware_shutdown(&cs35l56->base);
720 if (ret)
721 goto err;
722
723 /*
724 * Use wm_adsp to load and apply the firmware patch and coefficient files,
725 * but only if firmware is missing. If firmware is already patched just
726 * power-up wm_adsp without downloading firmware.
727 */
728 ret = wm_adsp_power_up(&cs35l56->dsp, !!firmware_missing);
729 if (ret) {
730 dev_dbg(cs35l56->base.dev, "%s: wm_adsp_power_up ret %d\n", __func__, ret);
731 goto err;
732 }
733
734 mutex_lock(&cs35l56->base.irq_lock);
735
736 reinit_completion(&cs35l56->init_completion);
737
738 cs35l56->soft_resetting = true;
739 cs35l56_system_reset(&cs35l56->base, !!cs35l56->sdw_peripheral);
740
741 if (cs35l56->sdw_peripheral) {
742 /*
743 * The system-reset causes the CS35L56 to detach from the bus.
744 * Wait for the manager to re-enumerate the CS35L56 and
745 * cs35l56_init() to run again.
746 */
747 if (!wait_for_completion_timeout(&cs35l56->init_completion,
748 msecs_to_jiffies(5000))) {
749 dev_err(cs35l56->base.dev, "%s: init_completion timed out (SDW)\n",
750 __func__);
751 goto err_unlock;
752 }
753 } else if (cs35l56_init(cs35l56)) {
754 goto err_unlock;
755 }
756
757 regmap_clear_bits(cs35l56->base.regmap, CS35L56_PROTECTION_STATUS,
758 CS35L56_FIRMWARE_MISSING);
759 cs35l56->base.fw_patched = true;
760
761 if (cs35l56_write_cal(cs35l56) == 0)
762 cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_AUDIO_REINIT);
763
764 err_unlock:
765 mutex_unlock(&cs35l56->base.irq_lock);
766 err:
767 /* Re-enable SoundWire interrupts */
768 if (cs35l56->sdw_peripheral) {
769 cs35l56->sdw_irq_no_unmask = false;
770 sdw_write_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_MASK_1,
771 CS35L56_SDW_INT_MASK_CODEC_IRQ);
772 }
773 }
774
cs35l56_dsp_work(struct work_struct * work)775 static void cs35l56_dsp_work(struct work_struct *work)
776 {
777 struct cs35l56_private *cs35l56 = container_of(work,
778 struct cs35l56_private,
779 dsp_work);
780 unsigned int firmware_version;
781 bool firmware_missing;
782 int ret;
783
784 if (!cs35l56->base.init_done)
785 return;
786
787 pm_runtime_get_sync(cs35l56->base.dev);
788
789 ret = cs35l56_read_prot_status(&cs35l56->base, &firmware_missing, &firmware_version);
790 if (ret)
791 goto err;
792
793 /* Populate fw file qualifier with the revision and security state */
794 kfree(cs35l56->dsp.fwf_name);
795 if (firmware_missing) {
796 cs35l56->dsp.fwf_name = kasprintf(GFP_KERNEL, "%02x-dsp1", cs35l56->base.rev);
797 } else {
798 /* Firmware files must match the running firmware version */
799 cs35l56->dsp.fwf_name = kasprintf(GFP_KERNEL,
800 "%02x%s-%06x-dsp1",
801 cs35l56->base.rev,
802 cs35l56->base.secured ? "-s" : "",
803 firmware_version);
804 }
805
806 if (!cs35l56->dsp.fwf_name)
807 goto err;
808
809 dev_dbg(cs35l56->base.dev, "DSP fwf name: '%s' system name: '%s'\n",
810 cs35l56->dsp.fwf_name, cs35l56->dsp.system_name);
811
812 /*
813 * The firmware cannot be patched if it is already running from
814 * patch RAM. In this case the firmware files are versioned to
815 * match the running firmware version and will only contain
816 * tunings. We do not need to shutdown the firmware to apply
817 * tunings so can use the lower cost reinit sequence instead.
818 */
819 if (!firmware_missing)
820 cs35l56_reinit_patch(cs35l56);
821 else
822 cs35l56_patch(cs35l56, firmware_missing);
823
824 err:
825 pm_runtime_mark_last_busy(cs35l56->base.dev);
826 pm_runtime_put_autosuspend(cs35l56->base.dev);
827 }
828
cs35l56_component_probe(struct snd_soc_component * component)829 static int cs35l56_component_probe(struct snd_soc_component *component)
830 {
831 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component);
832 struct dentry *debugfs_root = component->debugfs_root;
833 unsigned short vendor, device;
834
835 BUILD_BUG_ON(ARRAY_SIZE(cs35l56_tx_input_texts) != ARRAY_SIZE(cs35l56_tx_input_values));
836
837 if (!cs35l56->dsp.system_name &&
838 (snd_soc_card_get_pci_ssid(component->card, &vendor, &device) == 0)) {
839 /* Append a speaker qualifier if there is a speaker ID */
840 if (cs35l56->speaker_id >= 0) {
841 cs35l56->dsp.system_name = devm_kasprintf(cs35l56->base.dev,
842 GFP_KERNEL,
843 "%04x%04x-spkid%d",
844 vendor, device,
845 cs35l56->speaker_id);
846 } else {
847 cs35l56->dsp.system_name = devm_kasprintf(cs35l56->base.dev,
848 GFP_KERNEL,
849 "%04x%04x",
850 vendor, device);
851 }
852 if (!cs35l56->dsp.system_name)
853 return -ENOMEM;
854 }
855
856 if (!wait_for_completion_timeout(&cs35l56->init_completion,
857 msecs_to_jiffies(5000))) {
858 dev_err(cs35l56->base.dev, "%s: init_completion timed out\n", __func__);
859 return -ENODEV;
860 }
861
862 cs35l56->dsp.part = kasprintf(GFP_KERNEL, "cs35l%02x", cs35l56->base.type);
863 if (!cs35l56->dsp.part)
864 return -ENOMEM;
865
866 cs35l56->component = component;
867 wm_adsp2_component_probe(&cs35l56->dsp, component);
868
869 debugfs_create_bool("init_done", 0444, debugfs_root, &cs35l56->base.init_done);
870 debugfs_create_bool("can_hibernate", 0444, debugfs_root, &cs35l56->base.can_hibernate);
871 debugfs_create_bool("fw_patched", 0444, debugfs_root, &cs35l56->base.fw_patched);
872
873 queue_work(cs35l56->dsp_wq, &cs35l56->dsp_work);
874
875 return 0;
876 }
877
cs35l56_component_remove(struct snd_soc_component * component)878 static void cs35l56_component_remove(struct snd_soc_component *component)
879 {
880 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component);
881
882 cancel_work_sync(&cs35l56->dsp_work);
883
884 if (cs35l56->dsp.cs_dsp.booted)
885 wm_adsp_power_down(&cs35l56->dsp);
886
887 wm_adsp2_component_remove(&cs35l56->dsp, component);
888
889 kfree(cs35l56->dsp.part);
890 cs35l56->dsp.part = NULL;
891
892 kfree(cs35l56->dsp.fwf_name);
893 cs35l56->dsp.fwf_name = NULL;
894
895 cs35l56->component = NULL;
896 }
897
cs35l56_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)898 static int cs35l56_set_bias_level(struct snd_soc_component *component,
899 enum snd_soc_bias_level level)
900 {
901 struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component);
902
903 switch (level) {
904 case SND_SOC_BIAS_STANDBY:
905 /*
906 * Wait for patching to complete when transitioning from
907 * BIAS_OFF to BIAS_STANDBY
908 */
909 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
910 cs35l56_wait_dsp_ready(cs35l56);
911
912 break;
913 default:
914 break;
915 }
916
917 return 0;
918 }
919
920 static const struct snd_soc_component_driver soc_component_dev_cs35l56 = {
921 .probe = cs35l56_component_probe,
922 .remove = cs35l56_component_remove,
923
924 .dapm_widgets = cs35l56_dapm_widgets,
925 .num_dapm_widgets = ARRAY_SIZE(cs35l56_dapm_widgets),
926 .dapm_routes = cs35l56_audio_map,
927 .num_dapm_routes = ARRAY_SIZE(cs35l56_audio_map),
928 .controls = cs35l56_controls,
929 .num_controls = ARRAY_SIZE(cs35l56_controls),
930
931 .set_bias_level = cs35l56_set_bias_level,
932
933 .suspend_bias_off = 1, /* see cs35l56_system_resume() */
934 };
935
cs35l56_runtime_suspend_i2c_spi(struct device * dev)936 static int __maybe_unused cs35l56_runtime_suspend_i2c_spi(struct device *dev)
937 {
938 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
939
940 return cs35l56_runtime_suspend_common(&cs35l56->base);
941 }
942
cs35l56_runtime_resume_i2c_spi(struct device * dev)943 static int __maybe_unused cs35l56_runtime_resume_i2c_spi(struct device *dev)
944 {
945 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
946
947 return cs35l56_runtime_resume_common(&cs35l56->base, false);
948 }
949
cs35l56_system_suspend(struct device * dev)950 int cs35l56_system_suspend(struct device *dev)
951 {
952 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
953
954 dev_dbg(dev, "system_suspend\n");
955
956 if (cs35l56->component)
957 flush_work(&cs35l56->dsp_work);
958
959 /*
960 * The interrupt line is normally shared, but after we start suspending
961 * we can't check if our device is the source of an interrupt, and can't
962 * clear it. Prevent this race by temporarily disabling the parent irq
963 * until we reach _no_irq.
964 */
965 if (cs35l56->base.irq)
966 disable_irq(cs35l56->base.irq);
967
968 return pm_runtime_force_suspend(dev);
969 }
970 EXPORT_SYMBOL_GPL(cs35l56_system_suspend);
971
cs35l56_system_suspend_late(struct device * dev)972 int cs35l56_system_suspend_late(struct device *dev)
973 {
974 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
975
976 dev_dbg(dev, "system_suspend_late\n");
977
978 /*
979 * Assert RESET before removing supplies.
980 * RESET is usually shared by all amps so it must not be asserted until
981 * all driver instances have done their suspend() stage.
982 */
983 if (cs35l56->base.reset_gpio) {
984 gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 0);
985 cs35l56_wait_min_reset_pulse();
986 }
987
988 regulator_bulk_disable(ARRAY_SIZE(cs35l56->supplies), cs35l56->supplies);
989
990 return 0;
991 }
992 EXPORT_SYMBOL_GPL(cs35l56_system_suspend_late);
993
cs35l56_system_suspend_no_irq(struct device * dev)994 int cs35l56_system_suspend_no_irq(struct device *dev)
995 {
996 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
997
998 dev_dbg(dev, "system_suspend_no_irq\n");
999
1000 /* Handlers are now disabled so the parent IRQ can safely be re-enabled. */
1001 if (cs35l56->base.irq)
1002 enable_irq(cs35l56->base.irq);
1003
1004 return 0;
1005 }
1006 EXPORT_SYMBOL_GPL(cs35l56_system_suspend_no_irq);
1007
cs35l56_system_resume_no_irq(struct device * dev)1008 int cs35l56_system_resume_no_irq(struct device *dev)
1009 {
1010 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
1011
1012 dev_dbg(dev, "system_resume_no_irq\n");
1013
1014 /*
1015 * WAKE interrupts unmask if the CS35L56 hibernates, which can cause
1016 * spurious interrupts, and the interrupt line is normally shared.
1017 * We can't check if our device is the source of an interrupt, and can't
1018 * clear it, until it has fully resumed. Prevent this race by temporarily
1019 * disabling the parent irq until we complete resume().
1020 */
1021 if (cs35l56->base.irq)
1022 disable_irq(cs35l56->base.irq);
1023
1024 return 0;
1025 }
1026 EXPORT_SYMBOL_GPL(cs35l56_system_resume_no_irq);
1027
cs35l56_system_resume_early(struct device * dev)1028 int cs35l56_system_resume_early(struct device *dev)
1029 {
1030 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
1031 int ret;
1032
1033 dev_dbg(dev, "system_resume_early\n");
1034
1035 /* Ensure a spec-compliant RESET pulse. */
1036 if (cs35l56->base.reset_gpio) {
1037 gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 0);
1038 cs35l56_wait_min_reset_pulse();
1039 }
1040
1041 /* Enable supplies before releasing RESET. */
1042 ret = regulator_bulk_enable(ARRAY_SIZE(cs35l56->supplies), cs35l56->supplies);
1043 if (ret) {
1044 dev_err(dev, "system_resume_early failed to enable supplies: %d\n", ret);
1045 return ret;
1046 }
1047
1048 /* Release shared RESET before drivers start resume(). */
1049 gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 1);
1050
1051 return 0;
1052 }
1053 EXPORT_SYMBOL_GPL(cs35l56_system_resume_early);
1054
cs35l56_system_resume(struct device * dev)1055 int cs35l56_system_resume(struct device *dev)
1056 {
1057 struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);
1058 int ret;
1059
1060 dev_dbg(dev, "system_resume\n");
1061
1062 /*
1063 * We might have done a hard reset or the CS35L56 was power-cycled
1064 * so wait for control port to be ready.
1065 */
1066 cs35l56_wait_control_port_ready();
1067
1068 /* Undo pm_runtime_force_suspend() before re-enabling the irq */
1069 ret = pm_runtime_force_resume(dev);
1070 if (cs35l56->base.irq)
1071 enable_irq(cs35l56->base.irq);
1072
1073 if (ret)
1074 return ret;
1075
1076 /* Firmware won't have been loaded if the component hasn't probed */
1077 if (!cs35l56->component)
1078 return 0;
1079
1080 ret = cs35l56_is_fw_reload_needed(&cs35l56->base);
1081 dev_dbg(cs35l56->base.dev, "fw_reload_needed: %d\n", ret);
1082 if (ret < 1)
1083 return ret;
1084
1085 cs35l56->base.fw_patched = false;
1086 wm_adsp_power_down(&cs35l56->dsp);
1087 queue_work(cs35l56->dsp_wq, &cs35l56->dsp_work);
1088
1089 /*
1090 * suspend_bias_off ensures we are now in BIAS_OFF so there will be
1091 * a BIAS_OFF->BIAS_STANDBY transition to complete dsp patching.
1092 */
1093
1094 return 0;
1095 }
1096 EXPORT_SYMBOL_GPL(cs35l56_system_resume);
1097
cs35l56_control_add_nop(struct wm_adsp * dsp,struct cs_dsp_coeff_ctl * cs_ctl)1098 static int cs35l56_control_add_nop(struct wm_adsp *dsp, struct cs_dsp_coeff_ctl *cs_ctl)
1099 {
1100 return 0;
1101 }
1102
cs35l56_dsp_init(struct cs35l56_private * cs35l56)1103 static int cs35l56_dsp_init(struct cs35l56_private *cs35l56)
1104 {
1105 struct wm_adsp *dsp;
1106 int ret;
1107
1108 cs35l56->dsp_wq = create_singlethread_workqueue("cs35l56-dsp");
1109 if (!cs35l56->dsp_wq)
1110 return -ENOMEM;
1111
1112 INIT_WORK(&cs35l56->dsp_work, cs35l56_dsp_work);
1113
1114 dsp = &cs35l56->dsp;
1115 cs35l56_init_cs_dsp(&cs35l56->base, &dsp->cs_dsp);
1116
1117 /*
1118 * dsp->part is filled in later as it is based on the DEVID. In a
1119 * SoundWire system that cannot be read until enumeration has occurred
1120 * and the device has attached.
1121 */
1122 dsp->fw = 12;
1123 dsp->wmfw_optional = true;
1124
1125 /*
1126 * None of the firmware controls need to be exported so add a no-op
1127 * callback that suppresses creating an ALSA control.
1128 */
1129 dsp->control_add = &cs35l56_control_add_nop;
1130
1131 dev_dbg(cs35l56->base.dev, "DSP system name: '%s'\n", dsp->system_name);
1132
1133 ret = wm_halo_init(dsp);
1134 if (ret != 0) {
1135 dev_err(cs35l56->base.dev, "wm_halo_init failed\n");
1136 return ret;
1137 }
1138
1139 return 0;
1140 }
1141
cs35l56_get_firmware_uid(struct cs35l56_private * cs35l56)1142 static int cs35l56_get_firmware_uid(struct cs35l56_private *cs35l56)
1143 {
1144 struct device *dev = cs35l56->base.dev;
1145 const char *prop;
1146 int ret;
1147
1148 ret = device_property_read_string(dev, "cirrus,firmware-uid", &prop);
1149 /* If bad sw node property, return 0 and fallback to legacy firmware path */
1150 if (ret < 0)
1151 return 0;
1152
1153 /* Append a speaker qualifier if there is a speaker ID */
1154 if (cs35l56->speaker_id >= 0)
1155 cs35l56->dsp.system_name = devm_kasprintf(dev, GFP_KERNEL, "%s-spkid%d",
1156 prop, cs35l56->speaker_id);
1157 else
1158 cs35l56->dsp.system_name = devm_kstrdup(dev, prop, GFP_KERNEL);
1159
1160 if (cs35l56->dsp.system_name == NULL)
1161 return -ENOMEM;
1162
1163 dev_dbg(dev, "Firmware UID: %s\n", cs35l56->dsp.system_name);
1164
1165 return 0;
1166 }
1167
1168 /*
1169 * Some SoundWire laptops have a spk-id-gpios property but it points to
1170 * the wrong ACPI Device node so can't be used to get the GPIO. Try to
1171 * find the SDCA node containing the GpioIo resource and add a GPIO
1172 * mapping to it.
1173 */
1174 static const struct acpi_gpio_params cs35l56_af01_first_gpio = { 0, 0, false };
1175 static const struct acpi_gpio_mapping cs35l56_af01_spkid_gpios_mapping[] = {
1176 { "spk-id-gpios", &cs35l56_af01_first_gpio, 1 },
1177 { }
1178 };
1179
cs35l56_acpi_dev_release_driver_gpios(void * adev)1180 static void cs35l56_acpi_dev_release_driver_gpios(void *adev)
1181 {
1182 acpi_dev_remove_driver_gpios(adev);
1183 }
1184
cs35l56_try_get_broken_sdca_spkid_gpio(struct cs35l56_private * cs35l56)1185 static int cs35l56_try_get_broken_sdca_spkid_gpio(struct cs35l56_private *cs35l56)
1186 {
1187 struct fwnode_handle *af01_fwnode;
1188 const union acpi_object *obj;
1189 struct gpio_desc *desc;
1190 int ret;
1191
1192 /* Find the SDCA node containing the GpioIo */
1193 af01_fwnode = device_get_named_child_node(cs35l56->base.dev, "AF01");
1194 if (!af01_fwnode) {
1195 dev_dbg(cs35l56->base.dev, "No AF01 node\n");
1196 return -ENOENT;
1197 }
1198
1199 ret = acpi_dev_get_property(ACPI_COMPANION(cs35l56->base.dev),
1200 "spk-id-gpios", ACPI_TYPE_PACKAGE, &obj);
1201 if (ret) {
1202 dev_dbg(cs35l56->base.dev, "Could not get spk-id-gpios package: %d\n", ret);
1203 fwnode_handle_put(af01_fwnode);
1204 return -ENOENT;
1205 }
1206
1207 /* The broken properties we can handle are a 4-element package (one GPIO) */
1208 if (obj->package.count != 4) {
1209 dev_warn(cs35l56->base.dev, "Unexpected spk-id element count %d\n",
1210 obj->package.count);
1211 fwnode_handle_put(af01_fwnode);
1212 return -ENOENT;
1213 }
1214
1215 /* Add a GPIO mapping if it doesn't already have one */
1216 if (!fwnode_property_present(af01_fwnode, "spk-id-gpios")) {
1217 struct acpi_device *adev = to_acpi_device_node(af01_fwnode);
1218
1219 /*
1220 * Can't use devm_acpi_dev_add_driver_gpios() because the
1221 * mapping isn't being added to the node pointed to by
1222 * ACPI_COMPANION().
1223 */
1224 ret = acpi_dev_add_driver_gpios(adev, cs35l56_af01_spkid_gpios_mapping);
1225 if (ret) {
1226 fwnode_handle_put(af01_fwnode);
1227 return dev_err_probe(cs35l56->base.dev, ret,
1228 "Failed to add gpio mapping to AF01\n");
1229 }
1230
1231 ret = devm_add_action_or_reset(cs35l56->base.dev,
1232 cs35l56_acpi_dev_release_driver_gpios,
1233 adev);
1234 if (ret) {
1235 fwnode_handle_put(af01_fwnode);
1236 return ret;
1237 }
1238
1239 dev_dbg(cs35l56->base.dev, "Added spk-id-gpios mapping to AF01\n");
1240 }
1241
1242 desc = fwnode_gpiod_get_index(af01_fwnode, "spk-id", 0, GPIOD_IN, NULL);
1243 if (IS_ERR(desc)) {
1244 fwnode_handle_put(af01_fwnode);
1245 ret = PTR_ERR(desc);
1246 return dev_err_probe(cs35l56->base.dev, ret, "Get GPIO from AF01 failed\n");
1247 }
1248
1249 ret = gpiod_get_value_cansleep(desc);
1250 gpiod_put(desc);
1251
1252 if (ret < 0) {
1253 fwnode_handle_put(af01_fwnode);
1254 dev_err_probe(cs35l56->base.dev, ret, "Error reading spk-id GPIO\n");
1255 return ret;
1256 }
1257
1258 fwnode_handle_put(af01_fwnode);
1259
1260 dev_info(cs35l56->base.dev, "Got spk-id from AF01\n");
1261
1262 return ret;
1263 }
1264
cs35l56_common_probe(struct cs35l56_private * cs35l56)1265 int cs35l56_common_probe(struct cs35l56_private *cs35l56)
1266 {
1267 int ret;
1268
1269 init_completion(&cs35l56->init_completion);
1270 mutex_init(&cs35l56->base.irq_lock);
1271 cs35l56->base.cal_index = -1;
1272 cs35l56->speaker_id = -ENOENT;
1273
1274 dev_set_drvdata(cs35l56->base.dev, cs35l56);
1275
1276 cs35l56_fill_supply_names(cs35l56->supplies);
1277 ret = devm_regulator_bulk_get(cs35l56->base.dev, ARRAY_SIZE(cs35l56->supplies),
1278 cs35l56->supplies);
1279 if (ret != 0)
1280 return dev_err_probe(cs35l56->base.dev, ret, "Failed to request supplies\n");
1281
1282 /* Reset could be controlled by the BIOS or shared by multiple amps */
1283 cs35l56->base.reset_gpio = devm_gpiod_get_optional(cs35l56->base.dev, "reset",
1284 GPIOD_OUT_LOW);
1285 if (IS_ERR(cs35l56->base.reset_gpio)) {
1286 ret = PTR_ERR(cs35l56->base.reset_gpio);
1287 /*
1288 * If RESET is shared the first amp to probe will grab the reset
1289 * line and reset all the amps
1290 */
1291 if (ret != -EBUSY)
1292 return dev_err_probe(cs35l56->base.dev, ret, "Failed to get reset GPIO\n");
1293
1294 dev_info(cs35l56->base.dev, "Reset GPIO busy, assume shared reset\n");
1295 cs35l56->base.reset_gpio = NULL;
1296 }
1297
1298 ret = regulator_bulk_enable(ARRAY_SIZE(cs35l56->supplies), cs35l56->supplies);
1299 if (ret != 0)
1300 return dev_err_probe(cs35l56->base.dev, ret, "Failed to enable supplies\n");
1301
1302 if (cs35l56->base.reset_gpio) {
1303 /* ACPI can override GPIOD_OUT_LOW flag so force it to start low */
1304 gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 0);
1305 cs35l56_wait_min_reset_pulse();
1306 gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 1);
1307 }
1308
1309 ret = cs35l56_get_speaker_id(&cs35l56->base);
1310 if (ACPI_COMPANION(cs35l56->base.dev) && cs35l56->sdw_peripheral && (ret == -ENOENT))
1311 ret = cs35l56_try_get_broken_sdca_spkid_gpio(cs35l56);
1312
1313 if ((ret < 0) && (ret != -ENOENT))
1314 goto err;
1315
1316 cs35l56->speaker_id = ret;
1317
1318 ret = cs35l56_get_firmware_uid(cs35l56);
1319 if (ret != 0)
1320 goto err;
1321
1322 ret = cs35l56_dsp_init(cs35l56);
1323 if (ret < 0) {
1324 dev_err_probe(cs35l56->base.dev, ret, "DSP init failed\n");
1325 goto err;
1326 }
1327
1328 ret = devm_snd_soc_register_component(cs35l56->base.dev,
1329 &soc_component_dev_cs35l56,
1330 cs35l56_dai, ARRAY_SIZE(cs35l56_dai));
1331 if (ret < 0) {
1332 dev_err_probe(cs35l56->base.dev, ret, "Register codec failed\n");
1333 goto err;
1334 }
1335
1336 return 0;
1337
1338 err:
1339 gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 0);
1340 regulator_bulk_disable(ARRAY_SIZE(cs35l56->supplies), cs35l56->supplies);
1341
1342 return ret;
1343 }
1344 EXPORT_SYMBOL_NS_GPL(cs35l56_common_probe, SND_SOC_CS35L56_CORE);
1345
cs35l56_init(struct cs35l56_private * cs35l56)1346 int cs35l56_init(struct cs35l56_private *cs35l56)
1347 {
1348 int ret;
1349
1350 /*
1351 * Check whether the actions associated with soft reset or one time
1352 * init need to be performed.
1353 */
1354 if (cs35l56->soft_resetting)
1355 goto post_soft_reset;
1356
1357 if (cs35l56->base.init_done)
1358 return 0;
1359
1360 pm_runtime_set_autosuspend_delay(cs35l56->base.dev, 100);
1361 pm_runtime_use_autosuspend(cs35l56->base.dev);
1362 pm_runtime_set_active(cs35l56->base.dev);
1363 pm_runtime_enable(cs35l56->base.dev);
1364
1365 ret = cs35l56_hw_init(&cs35l56->base);
1366 if (ret < 0)
1367 return ret;
1368
1369 ret = cs35l56_set_patch(&cs35l56->base);
1370 if (ret)
1371 return ret;
1372
1373 ret = cs35l56_get_calibration(&cs35l56->base);
1374 if (ret)
1375 return ret;
1376
1377 if (!cs35l56->base.reset_gpio) {
1378 dev_dbg(cs35l56->base.dev, "No reset gpio: using soft reset\n");
1379 cs35l56->soft_resetting = true;
1380 cs35l56_system_reset(&cs35l56->base, !!cs35l56->sdw_peripheral);
1381 if (cs35l56->sdw_peripheral) {
1382 /* Keep alive while we wait for re-enumeration */
1383 pm_runtime_get_noresume(cs35l56->base.dev);
1384 return 0;
1385 }
1386 }
1387
1388 post_soft_reset:
1389 if (cs35l56->soft_resetting) {
1390 cs35l56->soft_resetting = false;
1391
1392 /* Done re-enumerating after one-time init so release the keep-alive */
1393 if (cs35l56->sdw_peripheral && !cs35l56->base.init_done)
1394 pm_runtime_put_noidle(cs35l56->base.dev);
1395
1396 regcache_mark_dirty(cs35l56->base.regmap);
1397 ret = cs35l56_wait_for_firmware_boot(&cs35l56->base);
1398 if (ret)
1399 return ret;
1400
1401 dev_dbg(cs35l56->base.dev, "Firmware rebooted after soft reset\n");
1402
1403 regcache_cache_only(cs35l56->base.regmap, false);
1404 }
1405
1406 /* Disable auto-hibernate so that runtime_pm has control */
1407 ret = cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_PREVENT_AUTO_HIBERNATE);
1408 if (ret)
1409 return ret;
1410
1411 /* Registers could be dirty after soft reset or SoundWire enumeration */
1412 regcache_sync(cs35l56->base.regmap);
1413
1414 /* Set ASP1 DOUT to high-impedance when it is not transmitting audio data. */
1415 ret = regmap_set_bits(cs35l56->base.regmap, CS35L56_ASP1_CONTROL3,
1416 CS35L56_ASP1_DOUT_HIZ_CTRL_MASK);
1417 if (ret)
1418 return dev_err_probe(cs35l56->base.dev, ret, "Failed to write ASP1_CONTROL3\n");
1419
1420 cs35l56->base.init_done = true;
1421 complete(&cs35l56->init_completion);
1422
1423 return 0;
1424 }
1425 EXPORT_SYMBOL_NS_GPL(cs35l56_init, SND_SOC_CS35L56_CORE);
1426
cs35l56_remove(struct cs35l56_private * cs35l56)1427 void cs35l56_remove(struct cs35l56_private *cs35l56)
1428 {
1429 cs35l56->base.init_done = false;
1430
1431 /*
1432 * WAKE IRQs unmask if CS35L56 hibernates so free the handler to
1433 * prevent it racing with remove().
1434 */
1435 if (cs35l56->base.irq)
1436 devm_free_irq(cs35l56->base.dev, cs35l56->base.irq, &cs35l56->base);
1437
1438 flush_workqueue(cs35l56->dsp_wq);
1439 destroy_workqueue(cs35l56->dsp_wq);
1440
1441 pm_runtime_dont_use_autosuspend(cs35l56->base.dev);
1442 pm_runtime_suspend(cs35l56->base.dev);
1443 pm_runtime_disable(cs35l56->base.dev);
1444
1445 regcache_cache_only(cs35l56->base.regmap, true);
1446
1447 gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 0);
1448 regulator_bulk_disable(ARRAY_SIZE(cs35l56->supplies), cs35l56->supplies);
1449 }
1450 EXPORT_SYMBOL_NS_GPL(cs35l56_remove, SND_SOC_CS35L56_CORE);
1451
1452 #if IS_ENABLED(CONFIG_SND_SOC_CS35L56_I2C) || IS_ENABLED(CONFIG_SND_SOC_CS35L56_SPI)
1453 EXPORT_NS_GPL_DEV_PM_OPS(cs35l56_pm_ops_i2c_spi, SND_SOC_CS35L56_CORE) = {
1454 SET_RUNTIME_PM_OPS(cs35l56_runtime_suspend_i2c_spi, cs35l56_runtime_resume_i2c_spi, NULL)
1455 SYSTEM_SLEEP_PM_OPS(cs35l56_system_suspend, cs35l56_system_resume)
1456 LATE_SYSTEM_SLEEP_PM_OPS(cs35l56_system_suspend_late, cs35l56_system_resume_early)
1457 NOIRQ_SYSTEM_SLEEP_PM_OPS(cs35l56_system_suspend_no_irq, cs35l56_system_resume_no_irq)
1458 };
1459 #endif
1460
1461 MODULE_DESCRIPTION("ASoC CS35L56 driver");
1462 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
1463 MODULE_IMPORT_NS(SND_SOC_CS_AMP_LIB);
1464 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
1465 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
1466 MODULE_LICENSE("GPL");
1467