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Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch')
-rw-r--r--target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch260
1 files changed, 0 insertions, 260 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch b/target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch
deleted file mode 100644
index 0ab156cc2a..0000000000
--- a/target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch
+++ /dev/null
@@ -1,260 +0,0 @@
-From 7f20637bc503f262245743a9bbe496e457e32ec1 Mon Sep 17 00:00:00 2001
-From: Daniel Matuschek <info@crazy-audio.com>
-Date: Wed, 15 Jan 2014 21:42:08 +0100
-Subject: [PATCH 041/222] ASoC: BCM:Add support for HiFiBerry Digi. Driver is
- based on the patched WM8804 driver.
-
-Signed-off-by: Daniel Matuschek <daniel@matuschek.net>
-
-Add a parameter to turn off SPDIF output if no audio is playing
-
-This patch adds the paramater auto_shutdown_output to the kernel module.
-Default behaviour of the module is the same, but when auto_shutdown_output
-is set to 1, the SPDIF oputput will shutdown if no stream is playing.
-
-bugfix for 32kHz sample rate, was missing
-
-HiFiBerry Digi: set SPDIF status bits for sample rate
-
-The HiFiBerry Digi driver did not signal the sample rate in the SPDIF status bits.
-While this is optional, some DACs and receivers do not accept this signal. This patch
-adds the sample rate bits in the SPDIF status block.
----
- sound/soc/bcm/Kconfig | 7 ++
- sound/soc/bcm/Makefile | 2 +
- sound/soc/bcm/hifiberry_digi.c | 201 +++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 210 insertions(+)
- create mode 100644 sound/soc/bcm/hifiberry_digi.c
-
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -26,6 +26,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
- help
- Say Y or M if you want to add support for HifiBerry DAC.
-
-+config SND_BCM2708_SOC_HIFIBERRY_DIGI
-+ tristate "Support for HifiBerry Digi"
-+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+ select SND_SOC_WM8804
-+ help
-+ Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
-+
- config SND_BCM2708_SOC_RPI_DAC
- tristate "Support for RPi-DAC"
- depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
---- a/sound/soc/bcm/Makefile
-+++ b/sound/soc/bcm/Makefile
-@@ -10,7 +10,9 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd
-
- # BCM2708 Machine Support
- snd-soc-hifiberry-dac-objs := hifiberry_dac.o
-+snd-soc-hifiberry-digi-objs := hifiberry_digi.o
- snd-soc-rpi-dac-objs := rpi-dac.o
-
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
-+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
- obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
---- /dev/null
-+++ b/sound/soc/bcm/hifiberry_digi.c
-@@ -0,0 +1,201 @@
-+/*
-+ * ASoC Driver for HifiBerry Digi
-+ *
-+ * Author: Daniel Matuschek <info@crazy-audio.com>
-+ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
-+ * Copyright 2013
-+ *
-+ * 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/wm8804.h"
-+
-+static short int auto_shutdown_output = 0;
-+module_param(auto_shutdown_output, short, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
-+MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped");
-+
-+
-+static int samplerate=44100;
-+
-+static int snd_rpi_hifiberry_digi_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+ struct snd_soc_codec *codec = rtd->codec;
-+
-+ /* enable TX output */
-+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
-+
-+ return 0;
-+}
-+
-+static int snd_rpi_hifiberry_digi_startup(struct snd_pcm_substream *substream) {
-+ /* turn on digital output */
-+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+ struct snd_soc_codec *codec = rtd->codec;
-+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
-+ return 0;
-+}
-+
-+static void snd_rpi_hifiberry_digi_shutdown(struct snd_pcm_substream *substream) {
-+ /* turn off output */
-+ if (auto_shutdown_output) {
-+ /* turn off output */
-+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+ struct snd_soc_codec *codec = rtd->codec;
-+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
-+ }
-+}
-+
-+
-+static int snd_rpi_hifiberry_digi_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 *codec_dai = rtd->codec_dai;
-+ struct snd_soc_codec *codec = rtd->codec;
-+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-+
-+ int sysclk = 27000000; /* This is fixed on this board */
-+
-+ long mclk_freq=0;
-+ int mclk_div=1;
-+ int sampling_freq=1;
-+
-+ int ret;
-+
-+ samplerate = params_rate(params);
-+
-+ if (samplerate<=96000) {
-+ mclk_freq=samplerate*256;
-+ mclk_div=WM8804_MCLKDIV_256FS;
-+ } else {
-+ mclk_freq=samplerate*128;
-+ mclk_div=WM8804_MCLKDIV_128FS;
-+ }
-+
-+ switch (samplerate) {
-+ case 32000:
-+ sampling_freq=0x03;
-+ break;
-+ case 44100:
-+ sampling_freq=0x00;
-+ break;
-+ case 48000:
-+ sampling_freq=0x02;
-+ break;
-+ case 88200:
-+ sampling_freq=0x08;
-+ break;
-+ case 96000:
-+ sampling_freq=0x0a;
-+ break;
-+ case 176400:
-+ sampling_freq=0x0c;
-+ break;
-+ case 192000:
-+ sampling_freq=0x0e;
-+ break;
-+ default:
-+ dev_err(codec->dev,
-+ "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
-+ samplerate);
-+ }
-+
-+ snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
-+ snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
-+
-+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
-+ sysclk, SND_SOC_CLOCK_OUT);
-+ if (ret < 0) {
-+ dev_err(codec->dev,
-+ "Failed to set WM8804 SYSCLK: %d\n", ret);
-+ return ret;
-+ }
-+
-+ /* Enable TX output */
-+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
-+
-+ /* Power on */
-+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
-+
-+ /* set sampling frequency status bits */
-+ snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
-+
-+ return snd_soc_dai_set_bclk_ratio(cpu_dai,64);
-+}
-+
-+/* machine stream operations */
-+static struct snd_soc_ops snd_rpi_hifiberry_digi_ops = {
-+ .hw_params = snd_rpi_hifiberry_digi_hw_params,
-+ .startup = snd_rpi_hifiberry_digi_startup,
-+ .shutdown = snd_rpi_hifiberry_digi_shutdown,
-+};
-+
-+static struct snd_soc_dai_link snd_rpi_hifiberry_digi_dai[] = {
-+{
-+ .name = "HifiBerry Digi",
-+ .stream_name = "HifiBerry Digi HiFi",
-+ .cpu_dai_name = "bcm2708-i2s.0",
-+ .codec_dai_name = "wm8804-spdif",
-+ .platform_name = "bcm2708-i2s.0",
-+ .codec_name = "wm8804.1-003b",
-+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+ SND_SOC_DAIFMT_CBM_CFM,
-+ .ops = &snd_rpi_hifiberry_digi_ops,
-+ .init = snd_rpi_hifiberry_digi_init,
-+},
-+};
-+
-+/* audio machine driver */
-+static struct snd_soc_card snd_rpi_hifiberry_digi = {
-+ .name = "snd_rpi_hifiberry_digi",
-+ .dai_link = snd_rpi_hifiberry_digi_dai,
-+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_digi_dai),
-+};
-+
-+static int snd_rpi_hifiberry_digi_probe(struct platform_device *pdev)
-+{
-+ int ret = 0;
-+
-+ snd_rpi_hifiberry_digi.dev = &pdev->dev;
-+ ret = snd_soc_register_card(&snd_rpi_hifiberry_digi);
-+ if (ret)
-+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
-+
-+ return ret;
-+}
-+
-+static int snd_rpi_hifiberry_digi_remove(struct platform_device *pdev)
-+{
-+ return snd_soc_unregister_card(&snd_rpi_hifiberry_digi);
-+}
-+
-+static struct platform_driver snd_rpi_hifiberry_digi_driver = {
-+ .driver = {
-+ .name = "snd-hifiberry-digi",
-+ .owner = THIS_MODULE,
-+ },
-+ .probe = snd_rpi_hifiberry_digi_probe,
-+ .remove = snd_rpi_hifiberry_digi_remove,
-+};
-+
-+module_platform_driver(snd_rpi_hifiberry_digi_driver);
-+
-+MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>");
-+MODULE_DESCRIPTION("ASoC Driver for HifiBerry Digi");
-+MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-11 05:16:18 +0000