blob: 4142861d002eabeb9ee4adb5598fb88a99af285b [file] [log] [blame]
b.liue9582032025-04-17 19:18:16 +08001From 1deb712a4899ba8f394908b75274943e12a6d65a Mon Sep 17 00:00:00 2001
2From: b-ak <anur.bhargav@gmail.com>
3Date: Thu, 3 Jan 2019 00:01:08 +0530
4Subject: [PATCH] ASoC: Add support for AudioSense-Pi add-on soundcard
5
6AudioSense-Pi is a RPi HAT based on a TI's TLV320AIC32x4 stereo codec
7
8This hardware provides multiple audio I/O capabilities to the RPi.
9The codec connects to the RPi's SoC through the I2S Bus.
10
11The following devices can be connected through a 3.5mm jack
12 1. Line-In: Plain old audio in from mobile phones, PCs, etc.,
13 2. Mic-In: Connect a microphone
14 3. Line-Out: Connect the output to a speaker
15 4. Headphones: Connect a Headphone w or w/o microphones
16
17Multiple Inputs:
18 It supports the following combinations
19 1. Two stereo Line-Inputs and a microphone
20 2. One stereo Line-Input and two microphones
21 3. Two stereo Line-Inputs, a microphone and
22 one mono line-input (with h/w hack)
23 4. One stereo Line-Input, two microphones and
24 one mono line-input (with h/w hack)
25
26Multiple Outputs:
27 Audio output can be routed to the headphones or
28 speakers (with additional hardware)
29
30Signed-off-by: b-ak <anur.bhargav@gmail.com>
31
32ASoC: audiosense-pi: use modern dai_link style
33
34Signed-off-by: Hui Wang <hui.wang@canonical.com>
35---
36 sound/soc/bcm/Kconfig | 7 +
37 sound/soc/bcm/Makefile | 2 +
38 sound/soc/bcm/audiosense-pi.c | 248 ++++++++++++++++++++++++++++++++++
39 3 files changed, 257 insertions(+)
40 create mode 100644 sound/soc/bcm/audiosense-pi.c
41
42--- a/sound/soc/bcm/Kconfig
43+++ b/sound/soc/bcm/Kconfig
44@@ -132,6 +132,13 @@ config SND_AUDIOINJECTOR_OCTO_SOUNDCARD
45 help
46 Say Y or M if you want to add support for audioinjector.net octo add on
47
48+config SND_AUDIOSENSE_PI
49+ tristate "Support for AudioSense Add-On Soundcard"
50+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
51+ select SND_SOC_TLV320AIC32X4_I2C
52+ help
53+ Say Y or M if you want to add support for tlv320aic32x4 add-on
54+
55 config SND_DIGIDAC1_SOUNDCARD
56 tristate "Support for Red Rocks Audio DigiDAC1"
57 depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
58--- a/sound/soc/bcm/Makefile
59+++ b/sound/soc/bcm/Makefile
60@@ -20,6 +20,7 @@ snd-soc-rpi-proto-objs := rpi-proto.o
61 snd-soc-iqaudio-dac-objs := iqaudio-dac.o
62 snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
63 snd-soc-audioinjector-octo-soundcard-objs := audioinjector-octo-soundcard.o
64+snd-soc-audiosense-pi-objs := audiosense-pi.o
65 snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
66 snd-soc-dionaudio-loco-objs := dionaudio_loco.o
67 snd-soc-dionaudio-loco-v2-objs := dionaudio_loco-v2.o
68@@ -40,6 +41,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO)
69 obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
70 obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
71 obj-$(CONFIG_SND_AUDIOINJECTOR_OCTO_SOUNDCARD) += snd-soc-audioinjector-octo-soundcard.o
72+obj-$(CONFIG_SND_AUDIOSENSE_PI) += snd-soc-audiosense-pi.o
73 obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
74 obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
75 obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2) += snd-soc-dionaudio-loco-v2.o
76--- /dev/null
77+++ b/sound/soc/bcm/audiosense-pi.c
78@@ -0,0 +1,248 @@
79+/*
80+ * ASoC Driver for AudioSense add on soundcard
81+ * Author:
82+ * Bhargav A K <anur.bhargav@gmail.com>
83+ * Copyright 2017
84+ *
85+ * This program is free software; you can redistribute it and/or
86+ * modify it under the terms of the GNU General Public License
87+ * version 2 as published by the Free Software Foundation.
88+ *
89+ * This program is distributed in the hope that it will be useful, but
90+ * WITHOUT ANY WARRANTY; without even the implied warranty of
91+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
92+ * General Public License for more details.
93+ */
94+
95+#include <linux/module.h>
96+#include <linux/platform_device.h>
97+#include <linux/clk.h>
98+#include <linux/i2c.h>
99+#include <sound/core.h>
100+#include <sound/pcm.h>
101+#include <sound/pcm_params.h>
102+#include <sound/soc.h>
103+#include <sound/jack.h>
104+#include <sound/control.h>
105+
106+#include <sound/tlv320aic32x4.h>
107+#include "../codecs/tlv320aic32x4.h"
108+
109+#define AIC32X4_SYSCLK_XTAL 0x00
110+
111+/*
112+ * Setup Codec Sample Rates and Channels
113+ * Supported Rates:
114+ * 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, 88200, 96000,
115+ */
116+static const unsigned int audiosense_pi_rate[] = {
117+ 48000,
118+};
119+
120+static struct snd_pcm_hw_constraint_list audiosense_constraints_rates = {
121+ .list = audiosense_pi_rate,
122+ .count = ARRAY_SIZE(audiosense_pi_rate),
123+};
124+
125+static const unsigned int audiosense_pi_channels[] = {
126+ 2,
127+};
128+
129+static struct snd_pcm_hw_constraint_list audiosense_constraints_ch = {
130+ .count = ARRAY_SIZE(audiosense_pi_channels),
131+ .list = audiosense_pi_channels,
132+ .mask = 0,
133+};
134+
135+/* Setup DAPM widgets and paths */
136+static const struct snd_soc_dapm_widget audiosense_pi_dapm_widgets[] = {
137+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
138+ SND_SOC_DAPM_LINE("Line Out", NULL),
139+ SND_SOC_DAPM_LINE("Line In", NULL),
140+ SND_SOC_DAPM_INPUT("CM_L"),
141+ SND_SOC_DAPM_INPUT("CM_R"),
142+};
143+
144+static const struct snd_soc_dapm_route audiosense_pi_audio_map[] = {
145+ /* Line Inputs are connected to
146+ * (IN1_L | IN1_R)
147+ * (IN2_L | IN2_R)
148+ * (IN3_L | IN3_R)
149+ */
150+ {"IN1_L", NULL, "Line In"},
151+ {"IN1_R", NULL, "Line In"},
152+ {"IN2_L", NULL, "Line In"},
153+ {"IN2_R", NULL, "Line In"},
154+ {"IN3_L", NULL, "Line In"},
155+ {"IN3_R", NULL, "Line In"},
156+
157+ /* Mic is connected to IN2_L and IN2_R */
158+ {"Left ADC", NULL, "Mic Bias"},
159+ {"Right ADC", NULL, "Mic Bias"},
160+
161+ /* Headphone connected to HPL, HPR */
162+ {"Headphone Jack", NULL, "HPL"},
163+ {"Headphone Jack", NULL, "HPR"},
164+
165+ /* Speakers connected to LOL and LOR */
166+ {"Line Out", NULL, "LOL"},
167+ {"Line Out", NULL, "LOR"},
168+};
169+
170+static int audiosense_pi_card_init(struct snd_soc_pcm_runtime *rtd)
171+{
172+ /* TODO: init of the codec specific dapm data, ignore suspend/resume */
173+ struct snd_soc_component *component = rtd->codec_dai->component;
174+
175+ snd_soc_component_update_bits(component, AIC32X4_MICBIAS, 0x78,
176+ AIC32X4_MICBIAS_LDOIN |
177+ AIC32X4_MICBIAS_2075V);
178+ snd_soc_component_update_bits(component, AIC32X4_PWRCFG, 0x08,
179+ AIC32X4_AVDDWEAKDISABLE);
180+ snd_soc_component_update_bits(component, AIC32X4_LDOCTL, 0x01,
181+ AIC32X4_LDOCTLEN);
182+
183+ return 0;
184+}
185+
186+static int audiosense_pi_card_hw_params(
187+ struct snd_pcm_substream *substream,
188+ struct snd_pcm_hw_params *params)
189+{
190+ int ret = 0;
191+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
192+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
193+
194+ /* Set the codec system clock, there is a 12 MHz XTAL on the board */
195+ ret = snd_soc_dai_set_sysclk(codec_dai, AIC32X4_SYSCLK_XTAL,
196+ 12000000, SND_SOC_CLOCK_IN);
197+ if (ret) {
198+ dev_err(rtd->card->dev,
199+ "could not set codec driver clock params\n");
200+ return ret;
201+ }
202+ return 0;
203+}
204+
205+static int audiosense_pi_card_startup(struct snd_pcm_substream *substream)
206+{
207+ struct snd_pcm_runtime *runtime = substream->runtime;
208+
209+ /*
210+ * Set codec to 48Khz Sampling, Stereo I/O and 16 bit audio
211+ */
212+ runtime->hw.channels_max = 2;
213+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
214+ &audiosense_constraints_ch);
215+
216+ runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
217+ snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
218+
219+
220+ snd_pcm_hw_constraint_list(substream->runtime, 0,
221+ SNDRV_PCM_HW_PARAM_RATE,
222+ &audiosense_constraints_rates);
223+ return 0;
224+}
225+
226+static struct snd_soc_ops audiosense_pi_card_ops = {
227+ .startup = audiosense_pi_card_startup,
228+ .hw_params = audiosense_pi_card_hw_params,
229+};
230+
231+SND_SOC_DAILINK_DEFS(audiosense_pi,
232+ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
233+ DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic32x4.1-0018", "tlv320aic32x4-hifi")),
234+ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
235+
236+static struct snd_soc_dai_link audiosense_pi_card_dai[] = {
237+ {
238+ .name = "TLV320AIC3204 Audio",
239+ .stream_name = "TLV320AIC3204 Hifi Audio",
240+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
241+ SND_SOC_DAIFMT_CBM_CFM,
242+ .ops = &audiosense_pi_card_ops,
243+ .init = audiosense_pi_card_init,
244+ SND_SOC_DAILINK_REG(audiosense_pi),
245+ },
246+};
247+
248+static struct snd_soc_card audiosense_pi_card = {
249+ .name = "audiosense-pi",
250+ .driver_name = "audiosense-pi",
251+ .dai_link = audiosense_pi_card_dai,
252+ .owner = THIS_MODULE,
253+ .num_links = ARRAY_SIZE(audiosense_pi_card_dai),
254+ .dapm_widgets = audiosense_pi_dapm_widgets,
255+ .num_dapm_widgets = ARRAY_SIZE(audiosense_pi_dapm_widgets),
256+ .dapm_routes = audiosense_pi_audio_map,
257+ .num_dapm_routes = ARRAY_SIZE(audiosense_pi_audio_map),
258+};
259+
260+static int audiosense_pi_card_probe(struct platform_device *pdev)
261+{
262+ int ret = 0;
263+ struct snd_soc_card *card = &audiosense_pi_card;
264+ struct snd_soc_dai_link *dai = &audiosense_pi_card_dai[0];
265+ struct device_node *i2s_node = pdev->dev.of_node;
266+
267+ card->dev = &pdev->dev;
268+
269+ if (!dai) {
270+ dev_err(&pdev->dev, "DAI not found. Missing or Invalid\n");
271+ return -EINVAL;
272+ }
273+
274+ i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
275+ if (!i2s_node) {
276+ dev_err(&pdev->dev,
277+ "Property 'i2s-controller' missing or invalid\n");
278+ return -EINVAL;
279+ }
280+
281+ dai->cpus->dai_name = NULL;
282+ dai->cpus->of_node = i2s_node;
283+ dai->platforms->name = NULL;
284+ dai->platforms->of_node = i2s_node;
285+
286+ of_node_put(i2s_node);
287+
288+ ret = snd_soc_register_card(card);
289+ if (ret && ret != -EPROBE_DEFER)
290+ dev_err(&pdev->dev,
291+ "snd_soc_register_card() failed: %d\n", ret);
292+
293+ return ret;
294+}
295+
296+static int audiosense_pi_card_remove(struct platform_device *pdev)
297+{
298+ struct snd_soc_card *card = platform_get_drvdata(pdev);
299+
300+ return snd_soc_unregister_card(card);
301+
302+}
303+
304+static const struct of_device_id audiosense_pi_card_of_match[] = {
305+ { .compatible = "as,audiosense-pi", },
306+ {},
307+};
308+MODULE_DEVICE_TABLE(of, audiosense_pi_card_of_match);
309+
310+static struct platform_driver audiosense_pi_card_driver = {
311+ .driver = {
312+ .name = "audiosense-snd-card",
313+ .owner = THIS_MODULE,
314+ .of_match_table = audiosense_pi_card_of_match,
315+ },
316+ .probe = audiosense_pi_card_probe,
317+ .remove = audiosense_pi_card_remove,
318+};
319+
320+module_platform_driver(audiosense_pi_card_driver);
321+
322+MODULE_AUTHOR("Bhargav AK <anur.bhargav@gmail.com>");
323+MODULE_DESCRIPTION("ASoC Driver for TLV320AIC3204 Audio");
324+MODULE_LICENSE("GPL v2");
325+MODULE_ALIAS("platform:audiosense-pi");
326+