1 From 9698288ce060841ca673ed296cc931130a566a12 Mon Sep 17 00:00:00 2001
2 From: Miquel <miquelblauw@hotmail.com>
3 Date: Fri, 24 Feb 2017 20:51:06 +0100
4 Subject: [PATCH 084/454] sound: Support for Dion Audio LOCO-V2 DAC-AMP HAT
6 Signed-off-by: Miquel Blauw <info@dionaudio.nl>
8 sound/soc/bcm/Kconfig | 7 ++
9 sound/soc/bcm/Makefile | 2 +
10 sound/soc/bcm/dionaudio_loco-v2.c | 140 ++++++++++++++++++++++++++++++
11 3 files changed, 149 insertions(+)
12 create mode 100644 sound/soc/bcm/dionaudio_loco-v2.c
14 --- a/sound/soc/bcm/Kconfig
15 +++ b/sound/soc/bcm/Kconfig
16 @@ -134,6 +134,13 @@ config SND_BCM2708_SOC_DIONAUDIO_LOCO
18 Say Y or M if you want to add support for Dion Audio LOCO.
20 +config SND_BCM2708_SOC_DIONAUDIO_LOCO_V2
21 + tristate "Support for Dion Audio LOCO-V2 DAC-AMP"
22 + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
23 + select SND_SOC_PCM5122
25 + Say Y or M if you want to add support for Dion Audio LOCO-V2.
27 config SND_BCM2708_SOC_ALLO_PIANO_DAC
28 tristate "Support for Allo Piano DAC"
29 depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
30 --- a/sound/soc/bcm/Makefile
31 +++ b/sound/soc/bcm/Makefile
32 @@ -25,6 +25,7 @@ snd-soc-raspidac3-objs := raspidac3.o
33 snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
34 snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
35 snd-soc-dionaudio-loco-objs := dionaudio_loco.o
36 +snd-soc-dionaudio-loco-v2-objs := dionaudio_loco-v2.o
37 snd-soc-allo-boss-dac-objs := allo-boss-dac.o
38 snd-soc-allo-piano-dac-objs := allo-piano-dac.o
39 snd-soc-allo-piano-dac-plus-objs := allo-piano-dac-plus.o
40 @@ -46,6 +47,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3)
41 obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
42 obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
43 obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
44 +obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2) += snd-soc-dionaudio-loco-v2.o
45 obj-$(CONFIG_SND_BCM2708_SOC_ALLO_BOSS_DAC) += snd-soc-allo-boss-dac.o
46 obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC) += snd-soc-allo-piano-dac.o
47 obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS) += snd-soc-allo-piano-dac-plus.o
49 +++ b/sound/soc/bcm/dionaudio_loco-v2.c
52 + * ASoC Driver for Dion Audio LOCO-V2 DAC-AMP
54 + * Author: Miquel Blauw <info@dionaudio.nl>
57 + * Based on the software of the RPi-DAC writen by Florian Meier
59 + * This program is free software; you can redistribute it and/or
60 + * modify it under the terms of the GNU General Public License
61 + * version 2 as published by the Free Software Foundation.
63 + * This program is distributed in the hope that it will be useful, but
64 + * WITHOUT ANY WARRANTY; without even the implied warranty of
65 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
66 + * General Public License for more details.
69 +#include <linux/module.h>
70 +#include <linux/platform_device.h>
72 +#include <sound/core.h>
73 +#include <sound/pcm.h>
74 +#include <sound/pcm_params.h>
75 +#include <sound/soc.h>
76 +#include <sound/jack.h>
78 +static bool digital_gain_0db_limit = true;
80 +static int snd_rpi_dionaudio_loco_v2_init(struct snd_soc_pcm_runtime *rtd)
82 + if (digital_gain_0db_limit) {
84 + struct snd_soc_card *card = rtd->card;
86 + ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
88 + dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
94 +static int snd_rpi_dionaudio_loco_v2_hw_params(
95 + struct snd_pcm_substream *substream,
96 + struct snd_pcm_hw_params *params)
98 + struct snd_soc_pcm_runtime *rtd = substream->private_data;
99 + struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
101 + unsigned int sample_bits =
102 + snd_pcm_format_physical_width(params_format(params));
104 + return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
107 +/* machine stream operations */
108 +static struct snd_soc_ops snd_rpi_dionaudio_loco_v2_ops = {
109 + .hw_params = snd_rpi_dionaudio_loco_v2_hw_params,
112 +static struct snd_soc_dai_link snd_rpi_dionaudio_loco_v2_dai[] = {
114 + .name = "DionAudio LOCO-V2",
115 + .stream_name = "DionAudio LOCO-V2 DAC-AMP",
116 + .cpu_dai_name = "bcm2708-i2s.0",
117 + .codec_dai_name = "pcm512x-hifi",
118 + .platform_name = "bcm2708-i2s.0",
119 + .codec_name = "pcm512x.1-004d",
120 + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
121 + SND_SOC_DAIFMT_CBS_CFS,
122 + .ops = &snd_rpi_dionaudio_loco_v2_ops,
123 + .init = snd_rpi_dionaudio_loco_v2_init,
126 +/* audio machine driver */
127 +static struct snd_soc_card snd_rpi_dionaudio_loco_v2 = {
128 + .name = "Dion Audio LOCO-V2",
129 + .dai_link = snd_rpi_dionaudio_loco_v2_dai,
130 + .num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_v2_dai),
133 +static int snd_rpi_dionaudio_loco_v2_probe(struct platform_device *pdev)
137 + snd_rpi_dionaudio_loco_v2.dev = &pdev->dev;
139 + if (pdev->dev.of_node) {
140 + struct device_node *i2s_node;
141 + struct snd_soc_dai_link *dai =
142 + &snd_rpi_dionaudio_loco_v2_dai[0];
144 + i2s_node = of_parse_phandle(pdev->dev.of_node,
145 + "i2s-controller", 0);
147 + dai->cpu_dai_name = NULL;
148 + dai->cpu_of_node = i2s_node;
149 + dai->platform_name = NULL;
150 + dai->platform_of_node = i2s_node;
153 + digital_gain_0db_limit = !of_property_read_bool(
154 + pdev->dev.of_node, "dionaudio,24db_digital_gain");
157 + ret = snd_soc_register_card(&snd_rpi_dionaudio_loco_v2);
159 + dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
165 +static int snd_rpi_dionaudio_loco_v2_remove(struct platform_device *pdev)
167 + return snd_soc_unregister_card(&snd_rpi_dionaudio_loco_v2);
170 +static const struct of_device_id dionaudio_of_match[] = {
171 + { .compatible = "dionaudio,dionaudio-loco-v2", },
174 +MODULE_DEVICE_TABLE(of, dionaudio_of_match);
176 +static struct platform_driver snd_rpi_dionaudio_loco_v2_driver = {
178 + .name = "snd-rpi-dionaudio-loco-v2",
179 + .owner = THIS_MODULE,
180 + .of_match_table = dionaudio_of_match,
182 + .probe = snd_rpi_dionaudio_loco_v2_probe,
183 + .remove = snd_rpi_dionaudio_loco_v2_remove,
186 +module_platform_driver(snd_rpi_dionaudio_loco_v2_driver);
188 +MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
189 +MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO-V2");
190 +MODULE_LICENSE("GPL v2");