1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // tegra210_mixer.c - Tegra210 MIXER driver
4 //
5 // Copyright (c) 2021 NVIDIA CORPORATION. All rights reserved.
6
7 #include <linux/clk.h>
8 #include <linux/device.h>
9 #include <linux/io.h>
10 #include <linux/mod_devicetable.h>
11 #include <linux/module.h>
12 #include <linux/platform_device.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/regmap.h>
15 #include <sound/core.h>
16 #include <sound/pcm.h>
17 #include <sound/pcm_params.h>
18 #include <sound/soc.h>
19
20 #include "tegra210_mixer.h"
21 #include "tegra_cif.h"
22
23 #define MIXER_REG(reg, id) ((reg) + ((id) * TEGRA210_MIXER_REG_STRIDE))
24 #define MIXER_REG_BASE(reg) ((reg) % TEGRA210_MIXER_REG_STRIDE)
25
26 #define MIXER_GAIN_CFG_RAM_ADDR(id) \
27 (TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0 + \
28 ((id) * TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE))
29
30 #define MIXER_RX_REG_DEFAULTS(id) \
31 { MIXER_REG(TEGRA210_MIXER_RX1_CIF_CTRL, id), 0x00007700}, \
32 { MIXER_REG(TEGRA210_MIXER_RX1_CTRL, id), 0x00010823}, \
33 { MIXER_REG(TEGRA210_MIXER_RX1_PEAK_CTRL, id), 0x000012c0}
34
35 #define MIXER_TX_REG_DEFAULTS(id) \
36 { MIXER_REG(TEGRA210_MIXER_TX1_INT_MASK, (id)), 0x00000001}, \
37 { MIXER_REG(TEGRA210_MIXER_TX1_CIF_CTRL, (id)), 0x00007700}
38
39 #define REG_DURATION_PARAM(reg, i) ((reg) + NUM_GAIN_POLY_COEFFS + 1 + (i))
40
41 static const struct reg_default tegra210_mixer_reg_defaults[] = {
42 /* Inputs */
43 MIXER_RX_REG_DEFAULTS(0),
44 MIXER_RX_REG_DEFAULTS(1),
45 MIXER_RX_REG_DEFAULTS(2),
46 MIXER_RX_REG_DEFAULTS(3),
47 MIXER_RX_REG_DEFAULTS(4),
48 MIXER_RX_REG_DEFAULTS(5),
49 MIXER_RX_REG_DEFAULTS(6),
50 MIXER_RX_REG_DEFAULTS(7),
51 MIXER_RX_REG_DEFAULTS(8),
52 MIXER_RX_REG_DEFAULTS(9),
53 /* Outputs */
54 MIXER_TX_REG_DEFAULTS(0),
55 MIXER_TX_REG_DEFAULTS(1),
56 MIXER_TX_REG_DEFAULTS(2),
57 MIXER_TX_REG_DEFAULTS(3),
58 MIXER_TX_REG_DEFAULTS(4),
59
60 { TEGRA210_MIXER_CG, 0x00000001},
61 { TEGRA210_MIXER_GAIN_CFG_RAM_CTRL, 0x00004000},
62 { TEGRA210_MIXER_PEAKM_RAM_CTRL, 0x00004000},
63 { TEGRA210_MIXER_ENABLE, 0x1 },
64 };
65
66 /* Default gain parameters */
67 static const struct tegra210_mixer_gain_params gain_params = {
68 /* Polynomial coefficients */
69 { 0, 0, 0, 0, 0, 0, 0, 0x1000000, 0 },
70 /* Gain value */
71 0x10000,
72 /* Duration Parameters */
73 { 0, 0, 0x400, 0x8000000 },
74 };
75
tegra210_mixer_runtime_suspend(struct device * dev)76 static int __maybe_unused tegra210_mixer_runtime_suspend(struct device *dev)
77 {
78 struct tegra210_mixer *mixer = dev_get_drvdata(dev);
79
80 regcache_cache_only(mixer->regmap, true);
81 regcache_mark_dirty(mixer->regmap);
82
83 return 0;
84 }
85
tegra210_mixer_runtime_resume(struct device * dev)86 static int __maybe_unused tegra210_mixer_runtime_resume(struct device *dev)
87 {
88 struct tegra210_mixer *mixer = dev_get_drvdata(dev);
89
90 regcache_cache_only(mixer->regmap, false);
91 regcache_sync(mixer->regmap);
92
93 return 0;
94 }
95
tegra210_mixer_write_ram(struct tegra210_mixer * mixer,unsigned int addr,unsigned int coef)96 static int tegra210_mixer_write_ram(struct tegra210_mixer *mixer,
97 unsigned int addr,
98 unsigned int coef)
99 {
100 unsigned int reg, val;
101 int err;
102
103 /* Check if busy */
104 err = regmap_read_poll_timeout(mixer->regmap,
105 TEGRA210_MIXER_GAIN_CFG_RAM_CTRL,
106 val, !(val & 0x80000000), 10, 10000);
107 if (err < 0)
108 return err;
109
110 reg = (addr << TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_SHIFT) &
111 TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_MASK;
112 reg |= TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_INIT_EN;
113 reg |= TEGRA210_MIXER_GAIN_CFG_RAM_RW_WRITE;
114 reg |= TEGRA210_MIXER_GAIN_CFG_RAM_SEQ_ACCESS_EN;
115
116 regmap_write(mixer->regmap,
117 TEGRA210_MIXER_GAIN_CFG_RAM_CTRL,
118 reg);
119 regmap_write(mixer->regmap,
120 TEGRA210_MIXER_GAIN_CFG_RAM_DATA,
121 coef);
122
123 return 0;
124 }
125
tegra210_mixer_configure_gain(struct snd_soc_component * cmpnt,unsigned int id,bool instant_gain)126 static int tegra210_mixer_configure_gain(struct snd_soc_component *cmpnt,
127 unsigned int id, bool instant_gain)
128 {
129 struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
130 unsigned int reg = MIXER_GAIN_CFG_RAM_ADDR(id);
131 int err, i;
132
133 pm_runtime_get_sync(cmpnt->dev);
134
135 /* Write default gain poly coefficients */
136 for (i = 0; i < NUM_GAIN_POLY_COEFFS; i++) {
137 err = tegra210_mixer_write_ram(mixer, reg + i,
138 gain_params.poly_coeff[i]);
139
140 if (err < 0)
141 goto rpm_put;
142 }
143
144 /* Write stored gain value */
145 err = tegra210_mixer_write_ram(mixer, reg + NUM_GAIN_POLY_COEFFS,
146 mixer->gain_value[id]);
147 if (err < 0)
148 goto rpm_put;
149
150 /* Write duration parameters */
151 for (i = 0; i < NUM_DURATION_PARMS; i++) {
152 int val;
153
154 if (instant_gain)
155 val = 1;
156 else
157 val = gain_params.duration[i];
158
159 err = tegra210_mixer_write_ram(mixer,
160 REG_DURATION_PARAM(reg, i),
161 val);
162 if (err < 0)
163 goto rpm_put;
164 }
165
166 /* Trigger to apply gain configurations */
167 err = tegra210_mixer_write_ram(mixer, reg + REG_CFG_DONE_TRIGGER,
168 VAL_CFG_DONE_TRIGGER);
169
170 rpm_put:
171 pm_runtime_put(cmpnt->dev);
172
173 return err;
174 }
175
tegra210_mixer_get_gain(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)176 static int tegra210_mixer_get_gain(struct snd_kcontrol *kcontrol,
177 struct snd_ctl_elem_value *ucontrol)
178 {
179 struct soc_mixer_control *mc =
180 (struct soc_mixer_control *)kcontrol->private_value;
181 struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
182 struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
183 unsigned int reg = mc->reg;
184 unsigned int i;
185
186 i = (reg - TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0) /
187 TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE;
188
189 ucontrol->value.integer.value[0] = mixer->gain_value[i];
190
191 return 0;
192 }
193
tegra210_mixer_apply_gain(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol,bool instant_gain)194 static int tegra210_mixer_apply_gain(struct snd_kcontrol *kcontrol,
195 struct snd_ctl_elem_value *ucontrol,
196 bool instant_gain)
197 {
198 struct soc_mixer_control *mc =
199 (struct soc_mixer_control *)kcontrol->private_value;
200 struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
201 struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
202 unsigned int reg = mc->reg, id;
203 int err;
204
205 /* Save gain value for specific MIXER input */
206 id = (reg - TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0) /
207 TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE;
208
209 if (mixer->gain_value[id] == ucontrol->value.integer.value[0])
210 return 0;
211
212 mixer->gain_value[id] = ucontrol->value.integer.value[0];
213
214 err = tegra210_mixer_configure_gain(cmpnt, id, instant_gain);
215 if (err) {
216 dev_err(cmpnt->dev, "Failed to apply gain\n");
217 return err;
218 }
219
220 return 1;
221 }
222
tegra210_mixer_put_gain(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)223 static int tegra210_mixer_put_gain(struct snd_kcontrol *kcontrol,
224 struct snd_ctl_elem_value *ucontrol)
225 {
226 return tegra210_mixer_apply_gain(kcontrol, ucontrol, false);
227 }
228
tegra210_mixer_put_instant_gain(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)229 static int tegra210_mixer_put_instant_gain(struct snd_kcontrol *kcontrol,
230 struct snd_ctl_elem_value *ucontrol)
231 {
232 return tegra210_mixer_apply_gain(kcontrol, ucontrol, true);
233 }
234
tegra210_mixer_set_audio_cif(struct tegra210_mixer * mixer,struct snd_pcm_hw_params * params,unsigned int reg,unsigned int id)235 static int tegra210_mixer_set_audio_cif(struct tegra210_mixer *mixer,
236 struct snd_pcm_hw_params *params,
237 unsigned int reg,
238 unsigned int id)
239 {
240 unsigned int channels, audio_bits;
241 struct tegra_cif_conf cif_conf;
242
243 memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
244
245 channels = params_channels(params);
246
247 switch (params_format(params)) {
248 case SNDRV_PCM_FORMAT_S16_LE:
249 audio_bits = TEGRA_ACIF_BITS_16;
250 break;
251 case SNDRV_PCM_FORMAT_S32_LE:
252 audio_bits = TEGRA_ACIF_BITS_32;
253 break;
254 default:
255 return -EINVAL;
256 }
257
258 cif_conf.audio_ch = channels;
259 cif_conf.client_ch = channels;
260 cif_conf.audio_bits = audio_bits;
261 cif_conf.client_bits = audio_bits;
262
263 tegra_set_cif(mixer->regmap,
264 reg + (id * TEGRA210_MIXER_REG_STRIDE),
265 &cif_conf);
266
267 return 0;
268 }
269
tegra210_mixer_in_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)270 static int tegra210_mixer_in_hw_params(struct snd_pcm_substream *substream,
271 struct snd_pcm_hw_params *params,
272 struct snd_soc_dai *dai)
273 {
274 struct tegra210_mixer *mixer = snd_soc_dai_get_drvdata(dai);
275 int err;
276
277 err = tegra210_mixer_set_audio_cif(mixer, params,
278 TEGRA210_MIXER_RX1_CIF_CTRL,
279 dai->id);
280 if (err < 0)
281 return err;
282
283 return tegra210_mixer_configure_gain(dai->component, dai->id, false);
284 }
285
tegra210_mixer_out_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)286 static int tegra210_mixer_out_hw_params(struct snd_pcm_substream *substream,
287 struct snd_pcm_hw_params *params,
288 struct snd_soc_dai *dai)
289 {
290 struct tegra210_mixer *mixer = snd_soc_dai_get_drvdata(dai);
291
292 return tegra210_mixer_set_audio_cif(mixer, params,
293 TEGRA210_MIXER_TX1_CIF_CTRL,
294 dai->id - TEGRA210_MIXER_RX_MAX);
295 }
296
297 static const struct snd_soc_dai_ops tegra210_mixer_out_dai_ops = {
298 .hw_params = tegra210_mixer_out_hw_params,
299 };
300
301 static const struct snd_soc_dai_ops tegra210_mixer_in_dai_ops = {
302 .hw_params = tegra210_mixer_in_hw_params,
303 };
304
305 #define IN_DAI(id) \
306 { \
307 .name = "MIXER-RX-CIF"#id, \
308 .playback = { \
309 .stream_name = "RX" #id "-CIF-Playback",\
310 .channels_min = 1, \
311 .channels_max = 8, \
312 .rates = SNDRV_PCM_RATE_8000_192000, \
313 .formats = SNDRV_PCM_FMTBIT_S8 | \
314 SNDRV_PCM_FMTBIT_S16_LE | \
315 SNDRV_PCM_FMTBIT_S32_LE, \
316 }, \
317 .capture = { \
318 .stream_name = "RX" #id "-CIF-Capture", \
319 .channels_min = 1, \
320 .channels_max = 8, \
321 .rates = SNDRV_PCM_RATE_8000_192000, \
322 .formats = SNDRV_PCM_FMTBIT_S8 | \
323 SNDRV_PCM_FMTBIT_S16_LE | \
324 SNDRV_PCM_FMTBIT_S32_LE, \
325 }, \
326 .ops = &tegra210_mixer_in_dai_ops, \
327 }
328
329 #define OUT_DAI(id) \
330 { \
331 .name = "MIXER-TX-CIF" #id, \
332 .playback = { \
333 .stream_name = "TX" #id "-CIF-Playback",\
334 .channels_min = 1, \
335 .channels_max = 8, \
336 .rates = SNDRV_PCM_RATE_8000_192000, \
337 .formats = SNDRV_PCM_FMTBIT_S8 | \
338 SNDRV_PCM_FMTBIT_S16_LE | \
339 SNDRV_PCM_FMTBIT_S32_LE, \
340 }, \
341 .capture = { \
342 .stream_name = "TX" #id "-CIF-Capture", \
343 .channels_min = 1, \
344 .channels_max = 8, \
345 .rates = SNDRV_PCM_RATE_8000_192000, \
346 .formats = SNDRV_PCM_FMTBIT_S8 | \
347 SNDRV_PCM_FMTBIT_S16_LE | \
348 SNDRV_PCM_FMTBIT_S32_LE, \
349 }, \
350 .ops = &tegra210_mixer_out_dai_ops, \
351 }
352
353 static struct snd_soc_dai_driver tegra210_mixer_dais[] = {
354 /* Mixer Input */
355 IN_DAI(1),
356 IN_DAI(2),
357 IN_DAI(3),
358 IN_DAI(4),
359 IN_DAI(5),
360 IN_DAI(6),
361 IN_DAI(7),
362 IN_DAI(8),
363 IN_DAI(9),
364 IN_DAI(10),
365
366 /* Mixer Output */
367 OUT_DAI(1),
368 OUT_DAI(2),
369 OUT_DAI(3),
370 OUT_DAI(4),
371 OUT_DAI(5),
372 };
373
374 #define ADDER_CTRL_DECL(name, reg) \
375 static const struct snd_kcontrol_new name[] = { \
376 SOC_DAPM_SINGLE("RX1", reg, 0, 1, 0), \
377 SOC_DAPM_SINGLE("RX2", reg, 1, 1, 0), \
378 SOC_DAPM_SINGLE("RX3", reg, 2, 1, 0), \
379 SOC_DAPM_SINGLE("RX4", reg, 3, 1, 0), \
380 SOC_DAPM_SINGLE("RX5", reg, 4, 1, 0), \
381 SOC_DAPM_SINGLE("RX6", reg, 5, 1, 0), \
382 SOC_DAPM_SINGLE("RX7", reg, 6, 1, 0), \
383 SOC_DAPM_SINGLE("RX8", reg, 7, 1, 0), \
384 SOC_DAPM_SINGLE("RX9", reg, 8, 1, 0), \
385 SOC_DAPM_SINGLE("RX10", reg, 9, 1, 0), \
386 }
387
388 ADDER_CTRL_DECL(adder1, TEGRA210_MIXER_TX1_ADDER_CONFIG);
389 ADDER_CTRL_DECL(adder2, TEGRA210_MIXER_TX2_ADDER_CONFIG);
390 ADDER_CTRL_DECL(adder3, TEGRA210_MIXER_TX3_ADDER_CONFIG);
391 ADDER_CTRL_DECL(adder4, TEGRA210_MIXER_TX4_ADDER_CONFIG);
392 ADDER_CTRL_DECL(adder5, TEGRA210_MIXER_TX5_ADDER_CONFIG);
393
394 #define GAIN_CTRL(id) \
395 SOC_SINGLE_EXT("RX" #id " Gain Volume", \
396 MIXER_GAIN_CFG_RAM_ADDR((id) - 1), 0, \
397 0x20000, 0, tegra210_mixer_get_gain, \
398 tegra210_mixer_put_gain), \
399 SOC_SINGLE_EXT("RX" #id " Instant Gain Volume", \
400 MIXER_GAIN_CFG_RAM_ADDR((id) - 1), 0, \
401 0x20000, 0, tegra210_mixer_get_gain, \
402 tegra210_mixer_put_instant_gain),
403
404 /* Volume controls for all MIXER inputs */
405 static const struct snd_kcontrol_new tegra210_mixer_gain_ctls[] = {
406 GAIN_CTRL(1)
407 GAIN_CTRL(2)
408 GAIN_CTRL(3)
409 GAIN_CTRL(4)
410 GAIN_CTRL(5)
411 GAIN_CTRL(6)
412 GAIN_CTRL(7)
413 GAIN_CTRL(8)
414 GAIN_CTRL(9)
415 GAIN_CTRL(10)
416 };
417
418 static const struct snd_soc_dapm_widget tegra210_mixer_widgets[] = {
419 SND_SOC_DAPM_AIF_IN("RX1", NULL, 0, SND_SOC_NOPM, 0, 0),
420 SND_SOC_DAPM_AIF_IN("RX2", NULL, 0, SND_SOC_NOPM, 0, 0),
421 SND_SOC_DAPM_AIF_IN("RX3", NULL, 0, SND_SOC_NOPM, 0, 0),
422 SND_SOC_DAPM_AIF_IN("RX4", NULL, 0, SND_SOC_NOPM, 0, 0),
423 SND_SOC_DAPM_AIF_IN("RX5", NULL, 0, SND_SOC_NOPM, 0, 0),
424 SND_SOC_DAPM_AIF_IN("RX6", NULL, 0, SND_SOC_NOPM, 0, 0),
425 SND_SOC_DAPM_AIF_IN("RX7", NULL, 0, SND_SOC_NOPM, 0, 0),
426 SND_SOC_DAPM_AIF_IN("RX8", NULL, 0, SND_SOC_NOPM, 0, 0),
427 SND_SOC_DAPM_AIF_IN("RX9", NULL, 0, SND_SOC_NOPM, 0, 0),
428 SND_SOC_DAPM_AIF_IN("RX10", NULL, 0, SND_SOC_NOPM, 0, 0),
429 SND_SOC_DAPM_AIF_OUT("TX1", NULL, 0, TEGRA210_MIXER_TX1_ENABLE, 0, 0),
430 SND_SOC_DAPM_AIF_OUT("TX2", NULL, 0, TEGRA210_MIXER_TX2_ENABLE, 0, 0),
431 SND_SOC_DAPM_AIF_OUT("TX3", NULL, 0, TEGRA210_MIXER_TX3_ENABLE, 0, 0),
432 SND_SOC_DAPM_AIF_OUT("TX4", NULL, 0, TEGRA210_MIXER_TX4_ENABLE, 0, 0),
433 SND_SOC_DAPM_AIF_OUT("TX5", NULL, 0, TEGRA210_MIXER_TX5_ENABLE, 0, 0),
434 SND_SOC_DAPM_MIXER("Adder1", SND_SOC_NOPM, 1, 0, adder1,
435 ARRAY_SIZE(adder1)),
436 SND_SOC_DAPM_MIXER("Adder2", SND_SOC_NOPM, 1, 0, adder2,
437 ARRAY_SIZE(adder2)),
438 SND_SOC_DAPM_MIXER("Adder3", SND_SOC_NOPM, 1, 0, adder3,
439 ARRAY_SIZE(adder3)),
440 SND_SOC_DAPM_MIXER("Adder4", SND_SOC_NOPM, 1, 0, adder4,
441 ARRAY_SIZE(adder4)),
442 SND_SOC_DAPM_MIXER("Adder5", SND_SOC_NOPM, 1, 0, adder5,
443 ARRAY_SIZE(adder5)),
444 };
445
446 #define RX_ROUTES(id, sname) \
447 { "RX" #id " XBAR-" sname, NULL, "RX" #id " XBAR-TX" }, \
448 { "RX" #id "-CIF-" sname, NULL, "RX" #id " XBAR-" sname }, \
449 { "RX" #id, NULL, "RX" #id "-CIF-" sname }
450
451 #define MIXER_RX_ROUTES(id) \
452 RX_ROUTES(id, "Playback"), \
453 RX_ROUTES(id, "Capture")
454
455 #define ADDER_ROUTES(id, sname) \
456 { "Adder" #id, "RX1", "RX1" }, \
457 { "Adder" #id, "RX2", "RX2" }, \
458 { "Adder" #id, "RX3", "RX3" }, \
459 { "Adder" #id, "RX4", "RX4" }, \
460 { "Adder" #id, "RX5", "RX5" }, \
461 { "Adder" #id, "RX6", "RX6" }, \
462 { "Adder" #id, "RX7", "RX7" }, \
463 { "Adder" #id, "RX8", "RX8" }, \
464 { "Adder" #id, "RX9", "RX9" }, \
465 { "Adder" #id, "RX10", "RX10" }, \
466 { "TX" #id, NULL, "Adder" #id }, \
467 { "TX" #id "-CIF-" sname, NULL, "TX" #id }, \
468 { "TX" #id " XBAR-" sname, NULL, "TX" #id "-CIF-" sname }, \
469 { "TX" #id " XBAR-RX", NULL, "TX" #id " XBAR-" sname } \
470
471 #define TX_ROUTES(id, sname) \
472 ADDER_ROUTES(1, sname), \
473 ADDER_ROUTES(2, sname), \
474 ADDER_ROUTES(3, sname), \
475 ADDER_ROUTES(4, sname), \
476 ADDER_ROUTES(5, sname)
477
478 #define MIXER_TX_ROUTES(id) \
479 TX_ROUTES(id, "Playback"), \
480 TX_ROUTES(id, "Capture")
481
482 static const struct snd_soc_dapm_route tegra210_mixer_routes[] = {
483 /* Input */
484 MIXER_RX_ROUTES(1),
485 MIXER_RX_ROUTES(2),
486 MIXER_RX_ROUTES(3),
487 MIXER_RX_ROUTES(4),
488 MIXER_RX_ROUTES(5),
489 MIXER_RX_ROUTES(6),
490 MIXER_RX_ROUTES(7),
491 MIXER_RX_ROUTES(8),
492 MIXER_RX_ROUTES(9),
493 MIXER_RX_ROUTES(10),
494 /* Output */
495 MIXER_TX_ROUTES(1),
496 MIXER_TX_ROUTES(2),
497 MIXER_TX_ROUTES(3),
498 MIXER_TX_ROUTES(4),
499 MIXER_TX_ROUTES(5),
500 };
501
502 static const struct snd_soc_component_driver tegra210_mixer_cmpnt = {
503 .dapm_widgets = tegra210_mixer_widgets,
504 .num_dapm_widgets = ARRAY_SIZE(tegra210_mixer_widgets),
505 .dapm_routes = tegra210_mixer_routes,
506 .num_dapm_routes = ARRAY_SIZE(tegra210_mixer_routes),
507 .controls = tegra210_mixer_gain_ctls,
508 .num_controls = ARRAY_SIZE(tegra210_mixer_gain_ctls),
509 };
510
tegra210_mixer_wr_reg(struct device * dev,unsigned int reg)511 static bool tegra210_mixer_wr_reg(struct device *dev,
512 unsigned int reg)
513 {
514 if (reg < TEGRA210_MIXER_RX_LIMIT)
515 reg = MIXER_REG_BASE(reg);
516 else if (reg < TEGRA210_MIXER_TX_LIMIT)
517 reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
518
519 switch (reg) {
520 case TEGRA210_MIXER_RX1_SOFT_RESET:
521 case TEGRA210_MIXER_RX1_CIF_CTRL ... TEGRA210_MIXER_RX1_PEAK_CTRL:
522
523 case TEGRA210_MIXER_TX1_ENABLE:
524 case TEGRA210_MIXER_TX1_SOFT_RESET:
525 case TEGRA210_MIXER_TX1_INT_MASK ... TEGRA210_MIXER_TX1_ADDER_CONFIG:
526
527 case TEGRA210_MIXER_ENABLE ... TEGRA210_MIXER_CG:
528 case TEGRA210_MIXER_GAIN_CFG_RAM_CTRL ... TEGRA210_MIXER_CTRL:
529 return true;
530 default:
531 return false;
532 }
533 }
534
tegra210_mixer_rd_reg(struct device * dev,unsigned int reg)535 static bool tegra210_mixer_rd_reg(struct device *dev,
536 unsigned int reg)
537 {
538 if (reg < TEGRA210_MIXER_RX_LIMIT)
539 reg = MIXER_REG_BASE(reg);
540 else if (reg < TEGRA210_MIXER_TX_LIMIT)
541 reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
542
543 switch (reg) {
544 case TEGRA210_MIXER_RX1_SOFT_RESET ... TEGRA210_MIXER_RX1_SAMPLE_COUNT:
545 case TEGRA210_MIXER_TX1_ENABLE ... TEGRA210_MIXER_TX1_ADDER_CONFIG:
546 case TEGRA210_MIXER_ENABLE ... TEGRA210_MIXER_CTRL:
547 return true;
548 default:
549 return false;
550 }
551 }
552
tegra210_mixer_volatile_reg(struct device * dev,unsigned int reg)553 static bool tegra210_mixer_volatile_reg(struct device *dev,
554 unsigned int reg)
555 {
556 if (reg < TEGRA210_MIXER_RX_LIMIT)
557 reg = MIXER_REG_BASE(reg);
558 else if (reg < TEGRA210_MIXER_TX_LIMIT)
559 reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
560
561 switch (reg) {
562 case TEGRA210_MIXER_RX1_SOFT_RESET:
563 case TEGRA210_MIXER_RX1_STATUS:
564
565 case TEGRA210_MIXER_TX1_SOFT_RESET:
566 case TEGRA210_MIXER_TX1_STATUS:
567 case TEGRA210_MIXER_TX1_INT_STATUS:
568 case TEGRA210_MIXER_TX1_INT_SET:
569
570 case TEGRA210_MIXER_SOFT_RESET:
571 case TEGRA210_MIXER_STATUS:
572 case TEGRA210_MIXER_INT_STATUS:
573 case TEGRA210_MIXER_GAIN_CFG_RAM_CTRL:
574 case TEGRA210_MIXER_GAIN_CFG_RAM_DATA:
575 case TEGRA210_MIXER_PEAKM_RAM_CTRL:
576 case TEGRA210_MIXER_PEAKM_RAM_DATA:
577 return true;
578 default:
579 return false;
580 }
581 }
582
tegra210_mixer_precious_reg(struct device * dev,unsigned int reg)583 static bool tegra210_mixer_precious_reg(struct device *dev,
584 unsigned int reg)
585 {
586 switch (reg) {
587 case TEGRA210_MIXER_GAIN_CFG_RAM_DATA:
588 case TEGRA210_MIXER_PEAKM_RAM_DATA:
589 return true;
590 default:
591 return false;
592 }
593 }
594
595 static const struct regmap_config tegra210_mixer_regmap_config = {
596 .reg_bits = 32,
597 .reg_stride = 4,
598 .val_bits = 32,
599 .max_register = TEGRA210_MIXER_CTRL,
600 .writeable_reg = tegra210_mixer_wr_reg,
601 .readable_reg = tegra210_mixer_rd_reg,
602 .volatile_reg = tegra210_mixer_volatile_reg,
603 .precious_reg = tegra210_mixer_precious_reg,
604 .reg_defaults = tegra210_mixer_reg_defaults,
605 .num_reg_defaults = ARRAY_SIZE(tegra210_mixer_reg_defaults),
606 .cache_type = REGCACHE_FLAT,
607 };
608
609 static const struct of_device_id tegra210_mixer_of_match[] = {
610 { .compatible = "nvidia,tegra210-amixer" },
611 {},
612 };
613 MODULE_DEVICE_TABLE(of, tegra210_mixer_of_match);
614
tegra210_mixer_platform_probe(struct platform_device * pdev)615 static int tegra210_mixer_platform_probe(struct platform_device *pdev)
616 {
617 struct device *dev = &pdev->dev;
618 struct tegra210_mixer *mixer;
619 void __iomem *regs;
620 int err, i;
621
622 mixer = devm_kzalloc(dev, sizeof(*mixer), GFP_KERNEL);
623 if (!mixer)
624 return -ENOMEM;
625
626 dev_set_drvdata(dev, mixer);
627
628 /* Use default gain value for all MIXER inputs */
629 for (i = 0; i < TEGRA210_MIXER_RX_MAX; i++)
630 mixer->gain_value[i] = gain_params.gain_value;
631
632 regs = devm_platform_ioremap_resource(pdev, 0);
633 if (IS_ERR(regs))
634 return PTR_ERR(regs);
635
636 mixer->regmap = devm_regmap_init_mmio(dev, regs,
637 &tegra210_mixer_regmap_config);
638 if (IS_ERR(mixer->regmap)) {
639 dev_err(dev, "regmap init failed\n");
640 return PTR_ERR(mixer->regmap);
641 }
642
643 regcache_cache_only(mixer->regmap, true);
644
645 err = devm_snd_soc_register_component(dev, &tegra210_mixer_cmpnt,
646 tegra210_mixer_dais,
647 ARRAY_SIZE(tegra210_mixer_dais));
648 if (err) {
649 dev_err(dev, "can't register MIXER component, err: %d\n", err);
650 return err;
651 }
652
653 pm_runtime_enable(dev);
654
655 return 0;
656 }
657
tegra210_mixer_platform_remove(struct platform_device * pdev)658 static void tegra210_mixer_platform_remove(struct platform_device *pdev)
659 {
660 pm_runtime_disable(&pdev->dev);
661 }
662
663 static const struct dev_pm_ops tegra210_mixer_pm_ops = {
664 SET_RUNTIME_PM_OPS(tegra210_mixer_runtime_suspend,
665 tegra210_mixer_runtime_resume, NULL)
666 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
667 pm_runtime_force_resume)
668 };
669
670 static struct platform_driver tegra210_mixer_driver = {
671 .driver = {
672 .name = "tegra210_mixer",
673 .of_match_table = tegra210_mixer_of_match,
674 .pm = &tegra210_mixer_pm_ops,
675 },
676 .probe = tegra210_mixer_platform_probe,
677 .remove = tegra210_mixer_platform_remove,
678 };
679 module_platform_driver(tegra210_mixer_driver);
680
681 MODULE_AUTHOR("Arun Shamanna Lakshmi <aruns@nvidia.com>");
682 MODULE_DESCRIPTION("Tegra210 MIXER ASoC driver");
683 MODULE_LICENSE("GPL v2");
684