+++ /dev/null
-From 0435c03e212129e384cd49b19fca7a55dbf1ec50 Mon Sep 17 00:00:00 2001
-From: Aaron Shaw <shawaj@gmail.com>
-Date: Thu, 7 Apr 2016 21:26:21 +0100
-Subject: [PATCH] Add Support for JustBoom Audio boards
-
-justboom-dac: Adjust for ALSA API change
-
-As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card *
-rather than a struct snd_soc_codec *.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
-
-ASoC: justboom-dac: fix S24_LE format
-
-Remove set_bclk_ratio call so 24-bit data is transmitted in
-24 bclk cycles.
-
-Also remove hw_params as it's no longer needed.
-
-Signed-off-by: Matthias Reichl <hias@horus.com>
----
- sound/soc/bcm/justboom-dac.c | 145 +++++++++++++++++++++++++++++++++++
- 1 file changed, 145 insertions(+)
- create mode 100644 sound/soc/bcm/justboom-dac.c
-
---- /dev/null
-+++ b/sound/soc/bcm/justboom-dac.c
-@@ -0,0 +1,145 @@
-+/*
-+ * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card
-+ *
-+ * Author: Milan Neskovic
-+ * Copyright 2016
-+ * based on code by Daniel Matuschek <info@crazy-audio.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 "../codecs/pcm512x.h"
-+
-+static bool digital_gain_0db_limit = true;
-+
-+static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+ struct snd_soc_component *component = rtd->codec_dai->component;
-+ snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
-+ snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
-+ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
-+
-+ if (digital_gain_0db_limit)
-+ {
-+ int ret;
-+ struct snd_soc_card *card = rtd->card;
-+
-+ 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);
-+ }
-+
-+ return 0;
-+}
-+
-+static int snd_rpi_justboom_dac_startup(struct snd_pcm_substream *substream) {
-+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+ struct snd_soc_component *component = rtd->codec_dai->component;
-+ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
-+ return 0;
-+}
-+
-+static void snd_rpi_justboom_dac_shutdown(struct snd_pcm_substream *substream) {
-+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+ struct snd_soc_component *component = rtd->codec_dai->component;
-+ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
-+}
-+
-+/* machine stream operations */
-+static struct snd_soc_ops snd_rpi_justboom_dac_ops = {
-+ .startup = snd_rpi_justboom_dac_startup,
-+ .shutdown = snd_rpi_justboom_dac_shutdown,
-+};
-+
-+static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = {
-+{
-+ .name = "JustBoom DAC",
-+ .stream_name = "JustBoom DAC HiFi",
-+ .cpu_dai_name = "bcm2708-i2s.0",
-+ .codec_dai_name = "pcm512x-hifi",
-+ .platform_name = "bcm2708-i2s.0",
-+ .codec_name = "pcm512x.1-004d",
-+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+ SND_SOC_DAIFMT_CBS_CFS,
-+ .ops = &snd_rpi_justboom_dac_ops,
-+ .init = snd_rpi_justboom_dac_init,
-+},
-+};
-+
-+/* audio machine driver */
-+static struct snd_soc_card snd_rpi_justboom_dac = {
-+ .name = "snd_rpi_justboom_dac",
-+ .driver_name = "JustBoomDac",
-+ .owner = THIS_MODULE,
-+ .dai_link = snd_rpi_justboom_dac_dai,
-+ .num_links = ARRAY_SIZE(snd_rpi_justboom_dac_dai),
-+};
-+
-+static int snd_rpi_justboom_dac_probe(struct platform_device *pdev)
-+{
-+ int ret = 0;
-+
-+ snd_rpi_justboom_dac.dev = &pdev->dev;
-+
-+ if (pdev->dev.of_node) {
-+ struct device_node *i2s_node;
-+ struct snd_soc_dai_link *dai = &snd_rpi_justboom_dac_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;
-+ }
-+
-+ digital_gain_0db_limit = !of_property_read_bool(
-+ pdev->dev.of_node, "justboom,24db_digital_gain");
-+ }
-+
-+ ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_justboom_dac);
-+ if (ret && ret != -EPROBE_DEFER)
-+ dev_err(&pdev->dev,
-+ "snd_soc_register_card() failed: %d\n", ret);
-+
-+ return ret;
-+}
-+
-+static const struct of_device_id snd_rpi_justboom_dac_of_match[] = {
-+ { .compatible = "justboom,justboom-dac", },
-+ {},
-+};
-+MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match);
-+
-+static struct platform_driver snd_rpi_justboom_dac_driver = {
-+ .driver = {
-+ .name = "snd-rpi-justboom-dac",
-+ .owner = THIS_MODULE,
-+ .of_match_table = snd_rpi_justboom_dac_of_match,
-+ },
-+ .probe = snd_rpi_justboom_dac_probe,
-+};
-+
-+module_platform_driver(snd_rpi_justboom_dac_driver);
-+
-+MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
-+MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card");
-+MODULE_LICENSE("GPL v2");
projects / openwrt / staging / chunkeey.git / blobdiff