From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001 From: James <> Date: Wed, 4 Nov 2015 11:49:21 +0000 Subject: trunk-47381 --- ...d-support-for-HiFiBerry-Digi.-Driver-is-b.patch | 260 +++++++++++++++++++++ 1 file changed, 260 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch (limited to 'target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch') 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 new file mode 100644 index 0000000..aff58e0 --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0041-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch @@ -0,0 +1,260 @@ +From dcb8a2f0beafb6bdf057ac2cf51efc9eb12afce5 Mon Sep 17 00:00:00 2001 +From: Daniel Matuschek +Date: Wed, 15 Jan 2014 21:42:08 +0100 +Subject: [PATCH 041/203] ASoC: BCM:Add support for HiFiBerry Digi. Driver is + based on the patched WM8804 driver. + +Signed-off-by: Daniel Matuschek + +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 ++ * based on the HifiBerry DAC driver by Florian Meier ++ * 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 ++#include ++ ++#include ++#include ++#include ++#include ++#include ++ ++#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 "); ++MODULE_DESCRIPTION("ASoC Driver for HifiBerry Digi"); ++MODULE_LICENSE("GPL v2"); -- cgit v1.2.3