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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
174 lines
5.3 KiB
Diff
174 lines
5.3 KiB
Diff
From 0435c03e212129e384cd49b19fca7a55dbf1ec50 Mon Sep 17 00:00:00 2001
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From: Aaron Shaw <shawaj@gmail.com>
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Date: Thu, 7 Apr 2016 21:26:21 +0100
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Subject: [PATCH] Add Support for JustBoom Audio boards
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justboom-dac: Adjust for ALSA API change
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As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card *
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rather than a struct snd_soc_codec *.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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ASoC: justboom-dac: fix S24_LE format
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Remove set_bclk_ratio call so 24-bit data is transmitted in
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24 bclk cycles.
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Also remove hw_params as it's no longer needed.
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Signed-off-by: Matthias Reichl <hias@horus.com>
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---
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sound/soc/bcm/justboom-dac.c | 145 +++++++++++++++++++++++++++++++++++
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1 file changed, 145 insertions(+)
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create mode 100644 sound/soc/bcm/justboom-dac.c
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--- /dev/null
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+++ b/sound/soc/bcm/justboom-dac.c
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@@ -0,0 +1,145 @@
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+/*
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+ * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card
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+ *
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+ * Author: Milan Neskovic
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+ * Copyright 2016
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+ * based on code by Daniel Matuschek <info@crazy-audio.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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+
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+#include "../codecs/pcm512x.h"
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+
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+static bool digital_gain_0db_limit = true;
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+
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+static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ struct snd_soc_component *component = rtd->codec_dai->component;
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+ snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
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+ snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
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+ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
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+
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+ if (digital_gain_0db_limit)
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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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+
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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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+ }
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+
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+ return 0;
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+}
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+
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+static int snd_rpi_justboom_dac_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_component *component = rtd->codec_dai->component;
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+ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
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+ return 0;
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+}
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+
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+static void snd_rpi_justboom_dac_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_component *component = rtd->codec_dai->component;
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+ snd_soc_component_update_bits(component, 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_justboom_dac_ops = {
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+ .startup = snd_rpi_justboom_dac_startup,
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+ .shutdown = snd_rpi_justboom_dac_shutdown,
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+};
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+
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+static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = {
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+{
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+ .name = "JustBoom DAC",
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+ .stream_name = "JustBoom DAC 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.1-004d",
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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_justboom_dac_ops,
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+ .init = snd_rpi_justboom_dac_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_justboom_dac = {
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+ .name = "snd_rpi_justboom_dac",
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+ .driver_name = "JustBoomDac",
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+ .owner = THIS_MODULE,
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+ .dai_link = snd_rpi_justboom_dac_dai,
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+ .num_links = ARRAY_SIZE(snd_rpi_justboom_dac_dai),
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+};
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+
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+static int snd_rpi_justboom_dac_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_justboom_dac.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_justboom_dac_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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+ digital_gain_0db_limit = !of_property_read_bool(
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+ pdev->dev.of_node, "justboom,24db_digital_gain");
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+ }
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+
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+ ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_justboom_dac);
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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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+static const struct of_device_id snd_rpi_justboom_dac_of_match[] = {
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+ { .compatible = "justboom,justboom-dac", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match);
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+
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+static struct platform_driver snd_rpi_justboom_dac_driver = {
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+ .driver = {
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+ .name = "snd-rpi-justboom-dac",
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+ .owner = THIS_MODULE,
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+ .of_match_table = snd_rpi_justboom_dac_of_match,
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+ },
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+ .probe = snd_rpi_justboom_dac_probe,
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+};
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+
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+module_platform_driver(snd_rpi_justboom_dac_driver);
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+
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+MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
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+MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card");
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+MODULE_LICENSE("GPL v2");
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