+++ /dev/null
-From 8b344be12a4fce4565784ca77ffa55efed01cac4 Mon Sep 17 00:00:00 2001
-From: Jan Grulich <jan@grulich.eu>
-Date: Mon, 24 Aug 2015 16:03:47 +0100
-Subject: [PATCH] RaspiDAC3 support
-
-Signed-off-by: Jan Grulich <jan@grulich.eu>
-
-config: fix RaspiDAC Rev.3x dependencies
-
-Change depends to SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-like the other I2S soundcard drivers.
-
-Signed-off-by: Matthias Reichl <hias@horus.com>
----
- sound/soc/bcm/Kconfig | 8 ++
- sound/soc/bcm/Makefile | 2 +
- sound/soc/bcm/raspidac3.c | 191 ++++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 201 insertions(+)
- create mode 100644 sound/soc/bcm/raspidac3.c
-
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -56,3 +56,11 @@ config SND_BCM2708_SOC_IQAUDIO_DAC
- select SND_SOC_PCM512x_I2C
- help
- Say Y or M if you want to add support for IQaudIO-DAC.
-+
-+config SND_BCM2708_SOC_RASPIDAC3
-+ tristate "Support for RaspiDAC Rev.3x"
-+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+ select SND_SOC_PCM512x_I2C
-+ select SND_SOC_TPA6130A2
-+ help
-+ Say Y or M if you want to add support for RaspiDAC Rev.3x.
---- a/sound/soc/bcm/Makefile
-+++ b/sound/soc/bcm/Makefile
-@@ -11,6 +11,7 @@ snd-soc-hifiberry-amp-objs := hifiberry_
- snd-soc-rpi-dac-objs := rpi-dac.o
- snd-soc-rpi-proto-objs := rpi-proto.o
- snd-soc-iqaudio-dac-objs := iqaudio-dac.o
-+snd-soc-raspidac3-objs := raspidac3.o
-
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
-@@ -19,3 +20,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_A
- obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
- obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
- obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
-+obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
---- /dev/null
-+++ b/sound/soc/bcm/raspidac3.c
-@@ -0,0 +1,191 @@
-+/*
-+ * ASoC Driver for RaspiDAC v3
-+ *
-+ * Author: Jan Grulich <jan@grulich.eu>
-+ * Copyright 2015
-+ * based on code by Daniel Matuschek <daniel@hifiberry.com>
-+ * based on code by Florian Meier <florian.meier@koalo.de>
-+ *
-+ * 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/platform_device.h>
-+
-+#include <sound/core.h>
-+#include <sound/pcm.h>
-+#include <sound/pcm_params.h>
-+#include <sound/soc.h>
-+#include <sound/jack.h>
-+#include <sound/soc-dapm.h>
-+
-+#include "../codecs/pcm512x.h"
-+#include "../codecs/tpa6130a2.h"
-+
-+/* sound card init */
-+static int snd_rpi_raspidac3_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+ int ret;
-+ struct snd_soc_card *card = rtd->card;
-+ struct snd_soc_codec *codec = rtd->codec;
-+ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
-+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
-+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
-+
-+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
-+ if (ret < 0)
-+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
-+ else {
-+ struct snd_kcontrol *kctl;
-+
-+ ret = tpa6130a2_add_controls(codec);
-+ if (ret < 0)
-+ dev_warn(card->dev, "Failed to add TPA6130A2 controls: %d\n",
-+ ret);
-+ ret = snd_soc_limit_volume(card,
-+ "TPA6130A2 Headphone Playback Volume",
-+ 54);
-+ if (ret < 0)
-+ dev_warn(card->dev, "Failed to set TPA6130A2 volume limit: %d\n",
-+ ret);
-+ kctl = snd_soc_card_get_kcontrol(card,
-+ "TPA6130A2 Headphone Playback Volume");
-+ if (kctl) {
-+ strcpy(kctl->id.name, "Headphones Playback Volume");
-+ /* disable the volume dB scale so alsamixer works */
-+ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
-+ }
-+
-+ kctl = snd_soc_card_get_kcontrol(card,
-+ "TPA6130A2 Headphone Playback Switch");
-+ if (kctl)
-+ strcpy(kctl->id.name, "Headphones Playback Switch");
-+ }
-+
-+ return 0;
-+}
-+
-+/* set hw parameters */
-+static int snd_rpi_raspidac3_hw_params(struct snd_pcm_substream *substream,
-+ struct snd_pcm_hw_params *params)
-+{
-+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-+
-+ unsigned int sample_bits =
-+ snd_pcm_format_physical_width(params_format(params));
-+
-+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
-+}
-+
-+/* startup */
-+static int snd_rpi_raspidac3_startup(struct snd_pcm_substream *substream) {
-+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+ struct snd_soc_codec *codec = rtd->codec;
-+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
-+ tpa6130a2_stereo_enable(codec, 1);
-+ return 0;
-+}
-+
-+/* shutdown */
-+static void snd_rpi_raspidac3_shutdown(struct snd_pcm_substream *substream) {
-+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+ struct snd_soc_codec *codec = rtd->codec;
-+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
-+ tpa6130a2_stereo_enable(codec, 0);
-+}
-+
-+/* machine stream operations */
-+static struct snd_soc_ops snd_rpi_raspidac3_ops = {
-+ .hw_params = snd_rpi_raspidac3_hw_params,
-+ .startup = snd_rpi_raspidac3_startup,
-+ .shutdown = snd_rpi_raspidac3_shutdown,
-+};
-+
-+/* interface setup */
-+static struct snd_soc_dai_link snd_rpi_raspidac3_dai[] = {
-+{
-+ .name = "RaspiDAC Rev.3x",
-+ .stream_name = "RaspiDAC HiFi",
-+ .cpu_dai_name = "bcm2708-i2s.0",
-+ .codec_dai_name = "pcm512x-hifi",
-+ .platform_name = "bcm2708-i2s.0",
-+ .codec_name = "pcm512x.1-004c",
-+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+ SND_SOC_DAIFMT_CBS_CFS,
-+ .ops = &snd_rpi_raspidac3_ops,
-+ .init = snd_rpi_raspidac3_init,
-+},
-+};
-+
-+/* audio machine driver */
-+static struct snd_soc_card snd_rpi_raspidac3 = {
-+ .name = "RaspiDAC Rev.3x HiFi Audio Card",
-+ .dai_link = snd_rpi_raspidac3_dai,
-+ .num_links = ARRAY_SIZE(snd_rpi_raspidac3_dai),
-+};
-+
-+/* sound card test */
-+static int snd_rpi_raspidac3_probe(struct platform_device *pdev)
-+{
-+ int ret = 0;
-+
-+ snd_rpi_raspidac3.dev = &pdev->dev;
-+
-+ if (pdev->dev.of_node) {
-+ struct device_node *i2s_node;
-+ struct snd_soc_dai_link *dai = &snd_rpi_raspidac3_dai[0];
-+ i2s_node = of_parse_phandle(pdev->dev.of_node,
-+ "i2s-controller", 0);
-+
-+ if (i2s_node) {
-+ dai->cpu_dai_name = NULL;
-+ dai->cpu_of_node = i2s_node;
-+ dai->platform_name = NULL;
-+ dai->platform_of_node = i2s_node;
-+ }
-+ }
-+
-+ ret = snd_soc_register_card(&snd_rpi_raspidac3);
-+ if (ret)
-+ dev_err(&pdev->dev,
-+ "snd_soc_register_card() failed: %d\n", ret);
-+
-+ return ret;
-+}
-+
-+/* sound card disconnect */
-+static int snd_rpi_raspidac3_remove(struct platform_device *pdev)
-+{
-+ return snd_soc_unregister_card(&snd_rpi_raspidac3);
-+}
-+
-+static const struct of_device_id raspidac3_of_match[] = {
-+ { .compatible = "jg,raspidacv3", },
-+ {},
-+};
-+MODULE_DEVICE_TABLE(of, raspidac3_of_match);
-+
-+/* sound card platform driver */
-+static struct platform_driver snd_rpi_raspidac3_driver = {
-+ .driver = {
-+ .name = "snd-rpi-raspidac3",
-+ .owner = THIS_MODULE,
-+ .of_match_table = raspidac3_of_match,
-+ },
-+ .probe = snd_rpi_raspidac3_probe,
-+ .remove = snd_rpi_raspidac3_remove,
-+};
-+
-+module_platform_driver(snd_rpi_raspidac3_driver);
-+
-+MODULE_AUTHOR("Jan Grulich <jan@grulich.eu>");
-+MODULE_DESCRIPTION("ASoC Driver for RaspiDAC Rev.3x");
-+MODULE_LICENSE("GPL v2");
projects / openwrt / openwrt.git / blobdiff