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239 lines
7.4 KiB
Diff
239 lines
7.4 KiB
Diff
From 478195495a0753278414ad5f7ecdfd9b50432c6b Mon Sep 17 00:00:00 2001
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From: Jan Grulich <jan@grulich.eu>
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Date: Mon, 24 Aug 2015 16:03:47 +0100
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Subject: [PATCH 072/454] RaspiDAC3 support
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Signed-off-by: Jan Grulich <jan@grulich.eu>
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config: fix RaspiDAC Rev.3x dependencies
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Change depends to SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
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like the other I2S soundcard drivers.
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Signed-off-by: Matthias Reichl <hias@horus.com>
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---
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sound/soc/bcm/Kconfig | 8 ++
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sound/soc/bcm/Makefile | 2 +
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sound/soc/bcm/raspidac3.c | 186 ++++++++++++++++++++++++++++++++++++++
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3 files changed, 196 insertions(+)
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create mode 100644 sound/soc/bcm/raspidac3.c
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--- a/sound/soc/bcm/Kconfig
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+++ b/sound/soc/bcm/Kconfig
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@@ -66,3 +66,11 @@ config SND_BCM2708_SOC_IQAUDIO_DAC
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select SND_SOC_PCM512x_I2C
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help
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Say Y or M if you want to add support for IQaudIO-DAC.
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+
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+config SND_BCM2708_SOC_RASPIDAC3
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+ tristate "Support for RaspiDAC Rev.3x"
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+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
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+ select SND_SOC_PCM512x_I2C
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+ select SND_SOC_TPA6130A2
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+ help
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+ Say Y or M if you want to add support for RaspiDAC Rev.3x.
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--- a/sound/soc/bcm/Makefile
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+++ b/sound/soc/bcm/Makefile
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@@ -16,6 +16,7 @@ snd-soc-hifiberry-digi-objs := hifiberry
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snd-soc-rpi-dac-objs := rpi-dac.o
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snd-soc-rpi-proto-objs := rpi-proto.o
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snd-soc-iqaudio-dac-objs := iqaudio-dac.o
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+snd-soc-raspidac3-objs := raspidac3.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
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@@ -24,3 +25,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D
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obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
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obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
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obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
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+obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
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--- /dev/null
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+++ b/sound/soc/bcm/raspidac3.c
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@@ -0,0 +1,186 @@
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+/*
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+ * ASoC Driver for RaspiDAC v3
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+ *
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+ * Author: Jan Grulich <jan@grulich.eu>
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+ * Copyright 2015
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+ * based on code by Daniel Matuschek <daniel@hifiberry.com>
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+ * based on code by Florian Meier <florian.meier@koalo.de>
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * version 2 as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+#include <sound/pcm_params.h>
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+#include <sound/soc.h>
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+#include <sound/jack.h>
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+#include <sound/soc-dapm.h>
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+
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+#include "../codecs/pcm512x.h"
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+#include "../codecs/tpa6130a2.h"
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+
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+/* sound card init */
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+static int snd_rpi_raspidac3_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ int ret;
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+ struct snd_soc_card *card = rtd->card;
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+ struct snd_soc_codec *codec = rtd->codec;
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+ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
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+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
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+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
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+
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+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
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+ if (ret < 0)
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+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
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+ else {
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+ struct snd_kcontrol *kctl;
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+
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+ ret = snd_soc_limit_volume(card,
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+ "TPA6130A2 Headphone Playback Volume",
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+ 54);
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+ if (ret < 0)
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+ dev_warn(card->dev, "Failed to set TPA6130A2 volume limit: %d\n",
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+ ret);
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+ kctl = snd_soc_card_get_kcontrol(card,
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+ "TPA6130A2 Headphone Playback Volume");
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+ if (kctl) {
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+ strcpy(kctl->id.name, "Headphones Playback Volume");
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+ /* disable the volume dB scale so alsamixer works */
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+ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
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+ }
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+
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+ kctl = snd_soc_card_get_kcontrol(card,
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+ "TPA6130A2 Headphone Playback Switch");
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+ if (kctl)
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+ strcpy(kctl->id.name, "Headphones Playback Switch");
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+ }
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+
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+ return 0;
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+}
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+
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+/* set hw parameters */
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+static int snd_rpi_raspidac3_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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+
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+ unsigned int sample_bits =
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+ snd_pcm_format_physical_width(params_format(params));
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+
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+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
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+}
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+
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+/* startup */
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+static int snd_rpi_raspidac3_startup(struct snd_pcm_substream *substream) {
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_codec *codec = rtd->codec;
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+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
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+ return 0;
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+}
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+
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+/* shutdown */
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+static void snd_rpi_raspidac3_shutdown(struct snd_pcm_substream *substream) {
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_codec *codec = rtd->codec;
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+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
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+}
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+
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+/* machine stream operations */
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+static struct snd_soc_ops snd_rpi_raspidac3_ops = {
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+ .hw_params = snd_rpi_raspidac3_hw_params,
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+ .startup = snd_rpi_raspidac3_startup,
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+ .shutdown = snd_rpi_raspidac3_shutdown,
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+};
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+
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+/* interface setup */
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+static struct snd_soc_dai_link snd_rpi_raspidac3_dai[] = {
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+{
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+ .name = "RaspiDAC Rev.3x",
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+ .stream_name = "RaspiDAC HiFi",
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+ .cpu_dai_name = "bcm2708-i2s.0",
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+ .codec_dai_name = "pcm512x-hifi",
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+ .platform_name = "bcm2708-i2s.0",
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+ .codec_name = "pcm512x.1-004c",
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+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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+ SND_SOC_DAIFMT_CBS_CFS,
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+ .ops = &snd_rpi_raspidac3_ops,
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+ .init = snd_rpi_raspidac3_init,
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+},
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+};
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+
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+/* audio machine driver */
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+static struct snd_soc_card snd_rpi_raspidac3 = {
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+ .name = "RaspiDAC Rev.3x HiFi Audio Card",
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+ .owner = THIS_MODULE,
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+ .dai_link = snd_rpi_raspidac3_dai,
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+ .num_links = ARRAY_SIZE(snd_rpi_raspidac3_dai),
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+};
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+
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+/* sound card test */
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+static int snd_rpi_raspidac3_probe(struct platform_device *pdev)
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+{
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+ int ret = 0;
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+
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+ snd_rpi_raspidac3.dev = &pdev->dev;
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+
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+ if (pdev->dev.of_node) {
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+ struct device_node *i2s_node;
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+ struct snd_soc_dai_link *dai = &snd_rpi_raspidac3_dai[0];
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+ i2s_node = of_parse_phandle(pdev->dev.of_node,
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+ "i2s-controller", 0);
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+
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+ if (i2s_node) {
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+ dai->cpu_dai_name = NULL;
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+ dai->cpu_of_node = i2s_node;
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+ dai->platform_name = NULL;
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+ dai->platform_of_node = i2s_node;
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+ }
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+ }
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+
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+ ret = snd_soc_register_card(&snd_rpi_raspidac3);
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+ if (ret && ret != -EPROBE_DEFER)
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+ dev_err(&pdev->dev,
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+ "snd_soc_register_card() failed: %d\n", ret);
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+
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+ return ret;
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+}
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+
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+/* sound card disconnect */
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+static int snd_rpi_raspidac3_remove(struct platform_device *pdev)
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+{
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+ return snd_soc_unregister_card(&snd_rpi_raspidac3);
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+}
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+
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+static const struct of_device_id raspidac3_of_match[] = {
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+ { .compatible = "jg,raspidacv3", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, raspidac3_of_match);
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+
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+/* sound card platform driver */
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+static struct platform_driver snd_rpi_raspidac3_driver = {
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+ .driver = {
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+ .name = "snd-rpi-raspidac3",
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+ .owner = THIS_MODULE,
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+ .of_match_table = raspidac3_of_match,
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+ },
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+ .probe = snd_rpi_raspidac3_probe,
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+ .remove = snd_rpi_raspidac3_remove,
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+};
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+
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+module_platform_driver(snd_rpi_raspidac3_driver);
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+
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+MODULE_AUTHOR("Jan Grulich <jan@grulich.eu>");
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+MODULE_DESCRIPTION("ASoC Driver for RaspiDAC Rev.3x");
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+MODULE_LICENSE("GPL v2");
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