aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/brcm2708/patches-4.14/950-0086-Add-support-for-the-AudioInjector.net-Octo-sound-car.patch
blob: d3964839855bc3da20b464749348af769c7c0f00 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
From 9dc67d61a5cd72eb80482aa1540e08a51e37172c Mon Sep 17 00:00:00 2001
From: Matt Flax <flatmax@flatmax.org>
Date: Wed, 8 Mar 2017 20:04:13 +1100
Subject: [PATCH 086/454] Add support for the AudioInjector.net Octo sound card

AudioInjector Octo: sample rates, regulators, reset

This patch adds new sample rates to the Audioinjector Octo sound card. The
new supported rates are (in kHz) :
96, 48, 32, 24, 16, 8, 88.2, 44.1, 29.4, 22.05, 14.7

Reference the bcm270x DT regulators in the overlay.

This patch adds a reset GPIO for the AudioInjector.net octo sound card.

Audioinjector octo : Make the playback and capture symmetric

This patch ensures that the sample rate and channel count of the audioinjector
octo sound card are symmetric.
---
 sound/soc/bcm/Kconfig                        |   7 +
 sound/soc/bcm/Makefile                       |   2 +
 sound/soc/bcm/audioinjector-octo-soundcard.c | 341 +++++++++++++++++++
 3 files changed, 350 insertions(+)
 create mode 100644 sound/soc/bcm/audioinjector-octo-soundcard.c

--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -119,6 +119,13 @@ config SND_AUDIOINJECTOR_PI_SOUNDCARD
 	help
 	  Say Y or M if you want to add support for audioinjector.net Pi Hat
 
+config SND_AUDIOINJECTOR_OCTO_SOUNDCARD
+	tristate "Support for audioinjector.net Octo channel (Hat) soundcard"
+	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+	select SND_SOC_CS42XX8_I2C
+	help
+	  Say Y or M if you want to add support for audioinjector.net octo add on
+
 config SND_DIGIDAC1_SOUNDCARD
         tristate "Support for Red Rocks Audio DigiDAC1"
         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -23,6 +23,7 @@ snd-soc-iqaudio-dac-objs := iqaudio-dac.
 snd-soc-iqaudio-digi-objs := iqaudio_digi.o
 snd-soc-raspidac3-objs := raspidac3.o
 snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
+snd-soc-audioinjector-octo-soundcard-objs := audioinjector-octo-soundcard.o
 snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
 snd-soc-dionaudio-loco-objs := dionaudio_loco.o
 snd-soc-dionaudio-loco-v2-objs := dionaudio_loco-v2.o
@@ -46,6 +47,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC
 obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI) += snd-soc-iqaudio-digi.o
 obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
 obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
+obj-$(CONFIG_SND_AUDIOINJECTOR_OCTO_SOUNDCARD) += snd-soc-audioinjector-octo-soundcard.o
 obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
 obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
 obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2) += snd-soc-dionaudio-loco-v2.o
--- /dev/null
+++ b/sound/soc/bcm/audioinjector-octo-soundcard.c
@@ -0,0 +1,341 @@
+/*
+ * ASoC Driver for AudioInjector Pi octo channel soundcard (hat)
+ *
+ *  Created on: 27-October-2016
+ *      Author: flatmax@flatmax.org
+ *              based on audioinjector-pi-soundcard.c
+ *
+ * Copyright (C) 2016 Flatmax Pty. Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/gpio/consumer.h>
+
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include <sound/control.h>
+
+static struct gpio_descs *mult_gpios;
+static struct gpio_desc *codec_rst_gpio;
+static unsigned int audioinjector_octo_rate;
+
+static const unsigned int audioinjector_octo_rates[] = {
+	96000, 48000, 32000, 24000, 16000, 8000, 88200, 44100, 29400, 22050, 14700,
+};
+
+static struct snd_pcm_hw_constraint_list audioinjector_octo_constraints = {
+	.list = audioinjector_octo_rates,
+	.count = ARRAY_SIZE(audioinjector_octo_rates),
+};
+
+static int audioinjector_octo_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+	return snd_soc_dai_set_bclk_ratio(rtd->cpu_dai, 64);
+}
+
+static int audioinjector_octo_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	rtd->cpu_dai->driver->playback.channels_min = 8;
+	rtd->cpu_dai->driver->playback.channels_max = 8;
+	rtd->cpu_dai->driver->capture.channels_min = 8;
+	rtd->cpu_dai->driver->capture.channels_max = 8;
+	rtd->codec_dai->driver->capture.channels_max = 8;
+	
+	snd_pcm_hw_constraint_list(substream->runtime, 0,
+				SNDRV_PCM_HW_PARAM_RATE,
+				&audioinjector_octo_constraints);
+
+	return 0;
+}
+
+static void audioinjector_octo_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	rtd->cpu_dai->driver->playback.channels_min = 2;
+	rtd->cpu_dai->driver->playback.channels_max = 2;
+	rtd->cpu_dai->driver->capture.channels_min = 2;
+	rtd->cpu_dai->driver->capture.channels_max = 2;
+	rtd->codec_dai->driver->capture.channels_max = 6;
+}
+
+static int audioinjector_octo_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+
+	// set codec DAI configuration
+	int ret = snd_soc_dai_set_fmt(rtd->codec_dai,
+			SND_SOC_DAIFMT_CBS_CFS|SND_SOC_DAIFMT_DSP_A|
+			SND_SOC_DAIFMT_NB_NF);
+	if (ret < 0)
+		return ret;
+
+	// set cpu DAI configuration
+	ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
+			SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|
+			SND_SOC_DAIFMT_NB_NF);
+	if (ret < 0)
+		return ret;
+
+	audioinjector_octo_rate = params_rate(params);
+
+	// Set the correct sysclock for the codec
+	switch (audioinjector_octo_rate) {
+	case 96000:
+	case 48000:
+		return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000,
+									0);
+		break;
+	case 24000:
+		return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/2,
+									0);
+		break;
+	case 32000:
+	case 16000:
+		return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/3,
+									0);
+		break;
+	case 8000:
+		return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/6,
+									0);
+		break;
+	case 88200:
+	case 44100:
+		return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400,
+									0);
+		break;
+	case 22050:
+		return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/2,
+									0);
+		break;
+	case 29400:
+	case 14700:
+		return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/3,
+									0);
+		break;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int audioinjector_octo_trigger(struct snd_pcm_substream *substream,
+								int cmd){
+	int mult[4];
+	mult[0] = 0;
+	mult[1] = 0;
+	mult[2] = 0;
+	mult[3] = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		switch (audioinjector_octo_rate) {
+		case 96000:
+			mult[3] = 1;
+		case 88200:
+			mult[1] = 1;
+			mult[2] = 1;
+			break;
+		case 48000:
+			mult[3] = 1;
+		case 44100:
+			mult[2] = 1;
+			break;
+		case 32000:
+			mult[3] = 1;
+		case 29400:
+			mult[0] = 1;
+			mult[1] = 1;
+			break;
+		case 24000:
+			mult[3] = 1;
+		case 22050:
+			mult[1] = 1;
+			break;
+		case 16000:
+			mult[3] = 1;
+		case 14700:
+			mult[0] = 1;
+			break;
+		case 8000:
+			mult[3] = 1;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		break;
+	default:
+		return -EINVAL;
+	}
+	gpiod_set_array_value_cansleep(mult_gpios->ndescs, mult_gpios->desc,
+									mult);
+
+	return 0;
+}
+
+static struct snd_soc_ops audioinjector_octo_ops = {
+	.startup	= audioinjector_octo_startup,
+	.shutdown	= audioinjector_octo_shutdown,
+	.hw_params = audioinjector_octo_hw_params,
+	.trigger = audioinjector_octo_trigger,
+};
+
+static struct snd_soc_dai_link audioinjector_octo_dai[] = {
+	{
+		.name = "AudioInjector Octo",
+		.stream_name = "AudioInject-HIFI",
+		.codec_dai_name = "cs42448",
+		.ops = &audioinjector_octo_ops,
+		.init = audioinjector_octo_dai_init,
+		.symmetric_rates = 1,
+		.symmetric_channels = 1,
+	},
+};
+
+static const struct snd_soc_dapm_widget audioinjector_octo_widgets[] = {
+	SND_SOC_DAPM_OUTPUT("OUTPUTS0"),
+	SND_SOC_DAPM_OUTPUT("OUTPUTS1"),
+	SND_SOC_DAPM_OUTPUT("OUTPUTS2"),
+	SND_SOC_DAPM_OUTPUT("OUTPUTS3"),
+	SND_SOC_DAPM_INPUT("INPUTS0"),
+	SND_SOC_DAPM_INPUT("INPUTS1"),
+	SND_SOC_DAPM_INPUT("INPUTS2"),
+};
+
+static const struct snd_soc_dapm_route audioinjector_octo_route[] = {
+	/* Balanced outputs */
+	{"OUTPUTS0", NULL, "AOUT1L"},
+	{"OUTPUTS0", NULL, "AOUT1R"},
+	{"OUTPUTS1", NULL, "AOUT2L"},
+	{"OUTPUTS1", NULL, "AOUT2R"},
+	{"OUTPUTS2", NULL, "AOUT3L"},
+	{"OUTPUTS2", NULL, "AOUT3R"},
+	{"OUTPUTS3", NULL, "AOUT4L"},
+	{"OUTPUTS3", NULL, "AOUT4R"},
+
+	/* Balanced inputs */
+	{"AIN1L", NULL, "INPUTS0"},
+	{"AIN1R", NULL, "INPUTS0"},
+	{"AIN2L", NULL, "INPUTS1"},
+	{"AIN2R", NULL, "INPUTS1"},
+	{"AIN3L", NULL, "INPUTS2"},
+	{"AIN3R", NULL, "INPUTS2"},
+};
+
+static struct snd_soc_card snd_soc_audioinjector_octo = {
+	.name = "audioinjector-octo-soundcard",
+	.dai_link = audioinjector_octo_dai,
+	.num_links = ARRAY_SIZE(audioinjector_octo_dai),
+
+	.dapm_widgets = audioinjector_octo_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(audioinjector_octo_widgets),
+	.dapm_routes = audioinjector_octo_route,
+	.num_dapm_routes = ARRAY_SIZE(audioinjector_octo_route),
+};
+
+static int audioinjector_octo_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &snd_soc_audioinjector_octo;
+	int ret;
+
+	card->dev = &pdev->dev;
+
+	if (pdev->dev.of_node) {
+		struct snd_soc_dai_link *dai = &audioinjector_octo_dai[0];
+		struct device_node *i2s_node =
+					of_parse_phandle(pdev->dev.of_node,
+							"i2s-controller", 0);
+		struct device_node *codec_node =
+					of_parse_phandle(pdev->dev.of_node,
+								"codec", 0);
+
+		mult_gpios = devm_gpiod_get_array_optional(&pdev->dev, "mult",
+								GPIOD_OUT_LOW);
+		if (IS_ERR(mult_gpios))
+			return PTR_ERR(mult_gpios);
+
+		codec_rst_gpio = devm_gpiod_get_optional(&pdev->dev, "reset",
+								GPIOD_OUT_LOW);
+		if (IS_ERR(codec_rst_gpio))
+			return PTR_ERR(codec_rst_gpio);
+
+		if (codec_rst_gpio)
+			gpiod_set_value(codec_rst_gpio, 1);
+		msleep(500);
+		if (codec_rst_gpio)
+			gpiod_set_value(codec_rst_gpio, 0);
+		msleep(500);
+		if (codec_rst_gpio)
+			gpiod_set_value(codec_rst_gpio, 1);
+		msleep(500);
+
+		if (i2s_node && codec_node) {
+			dai->cpu_dai_name = NULL;
+			dai->cpu_of_node = i2s_node;
+			dai->platform_name = NULL;
+			dai->platform_of_node = i2s_node;
+			dai->codec_name = NULL;
+			dai->codec_of_node = codec_node;
+		} else
+			if (!dai->cpu_of_node) {
+				dev_err(&pdev->dev,
+				"i2s-controller missing or invalid in DT\n");
+				return -EINVAL;
+			} else {
+				dev_err(&pdev->dev,
+				"Property 'codec' missing or invalid\n");
+				return -EINVAL;
+			}
+	}
+
+	ret = snd_soc_register_card(card);
+	if (ret != 0)
+		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+	return ret;
+}
+
+static int audioinjector_octo_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+	return snd_soc_unregister_card(card);
+}
+
+static const struct of_device_id audioinjector_octo_of_match[] = {
+	{ .compatible = "ai,audioinjector-octo-soundcard", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, audioinjector_octo_of_match);
+
+static struct platform_driver audioinjector_octo_driver = {
+	.driver	= {
+		.name			= "audioinjector-octo",
+		.owner			= THIS_MODULE,
+		.of_match_table = audioinjector_octo_of_match,
+	},
+	.probe	= audioinjector_octo_probe,
+	.remove	= audioinjector_octo_remove,
+};
+
+module_platform_driver(audioinjector_octo_driver);
+MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
+MODULE_DESCRIPTION("AudioInjector.net octo Soundcard");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:audioinjector-octo-soundcard");