diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch b/target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch new file mode 100644 index 0000000000..f6a23f91f4 --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch @@ -0,0 +1,295 @@ +From 5d70e6012f390d6292ea8017cebb947a003fce00 Mon Sep 17 00:00:00 2001 +From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk> +Date: Thu, 30 Jun 2016 18:38:42 +0100 +Subject: [PATCH] Add IQAudIO Digi WM8804 board support + +Support IQAudIO Digi board with iqaudio_digi machine driver and + iqaudio-digi-wm8804-audio overlay. + +NB. Machine driver is a cut and paste of hifiberry_digi code, with format + and general cleanup to comply with kernel coding standards. + +Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk> +--- + sound/soc/bcm/Kconfig | 7 ++ + sound/soc/bcm/Makefile | 2 + + sound/soc/bcm/iqaudio_digi.c | 239 +++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 248 insertions(+) + create mode 100644 sound/soc/bcm/iqaudio_digi.c + +--- a/sound/soc/bcm/Kconfig ++++ b/sound/soc/bcm/Kconfig +@@ -80,6 +80,13 @@ config SND_BCM2708_SOC_IQAUDIO_DAC + help + Say Y or M if you want to add support for IQaudIO-DAC. + ++config SND_BCM2708_SOC_IQAUDIO_DIGI ++ tristate "Support for IQAudIO 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 IQAudIO Digital IO board. ++ + config SND_BCM2708_SOC_RASPIDAC3 + tristate "Support for RaspiDAC Rev.3x" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S +--- a/sound/soc/bcm/Makefile ++++ b/sound/soc/bcm/Makefile +@@ -19,6 +19,7 @@ snd-soc-justboom-digi-objs := justboom-d + 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-iqaudio-digi-objs := iqaudio_digi.o + snd-soc-raspidac3-objs := raspidac3.o + snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o + +@@ -32,6 +33,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DI + obj-$(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-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI) += snd-soc-iqaudio-digi.o + obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o + obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o + +--- /dev/null ++++ b/sound/soc/bcm/iqaudio_digi.c +@@ -0,0 +1,239 @@ ++/* ++ * ASoC Driver for IQAudIO WM8804 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; ++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 snd_rpi_iqaudio_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_iqaudio_digi_startup(struct snd_pcm_substream *substream) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_codec *codec = rtd->codec; ++ ++ /* turn on digital output */ ++ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00); ++ ++ return 0; ++} ++ ++static void snd_rpi_iqaudio_digi_shutdown(struct snd_pcm_substream *substream) ++{ ++ if (auto_shutdown_output) { ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_codec *codec = rtd->codec; ++ ++ /* turn off digital output */ ++ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c); ++ } ++} ++ ++ ++static int snd_rpi_iqaudio_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; ++ ++ int 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_iqaudio_digi_ops = { ++ .hw_params = snd_rpi_iqaudio_digi_hw_params, ++ .startup = snd_rpi_iqaudio_digi_startup, ++ .shutdown = snd_rpi_iqaudio_digi_shutdown, ++}; ++ ++static struct snd_soc_dai_link snd_rpi_iqaudio_digi_dai[] = { ++{ ++ .name = "IQAudIO Digi", ++ .stream_name = "IQAudIO 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_iqaudio_digi_ops, ++ .init = snd_rpi_iqaudio_digi_init, ++}, ++}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_rpi_iqaudio_digi = { ++ .name = "IQAudIODigi", ++ .owner = THIS_MODULE, ++ .dai_link = snd_rpi_iqaudio_digi_dai, ++ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_digi_dai), ++}; ++ ++static int snd_rpi_iqaudio_digi_probe(struct platform_device *pdev) ++{ ++ struct snd_soc_card *card = &snd_rpi_iqaudio_digi; ++ char *prefix = "wm8804-digi,"; ++ char prop[128]; ++ struct device_node *np; ++ int ret = 0; ++ ++ snd_rpi_iqaudio_digi.dev = &pdev->dev; ++ ++ np = pdev->dev.of_node; ++ if (np) { ++ struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_digi_dai[0]; ++ struct device_node *i2s_node; ++ ++ i2s_node = of_parse_phandle(np, "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; ++ } ++ ++ snprintf(prop, sizeof(prop), "%scard-name", prefix); ++ of_property_read_string(np, prop, &card->name); ++ ++ snprintf(prop, sizeof(prop), "%sdai-name", prefix); ++ of_property_read_string(np, prop, &dai->name); ++ ++ snprintf(prop, sizeof(prop), "%sdai-stream-name", prefix); ++ of_property_read_string(np, prop, &dai->stream_name); ++ } ++ ++ ret = snd_soc_register_card(card); ++ if (ret) ++ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ++ ret); ++ ++ return ret; ++} ++ ++static int snd_rpi_iqaudio_digi_remove(struct platform_device *pdev) ++{ ++ return snd_soc_unregister_card(&snd_rpi_iqaudio_digi); ++} ++ ++static const struct of_device_id snd_rpi_iqaudio_digi_of_match[] = { ++ { .compatible = "iqaudio,wm8804-digi", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, snd_rpi_iqaudio_digi_of_match); ++ ++static struct platform_driver snd_rpi_iqaudio_digi_driver = { ++ .driver = { ++ .name = "IQAudIODigi", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_rpi_iqaudio_digi_of_match, ++ }, ++ .probe = snd_rpi_iqaudio_digi_probe, ++ .remove = snd_rpi_iqaudio_digi_remove, ++}; ++ ++module_platform_driver(snd_rpi_iqaudio_digi_driver); ++ ++MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>"); ++MODULE_DESCRIPTION("ASoC Driver for IQAudIO WM8804 Digi"); ++MODULE_LICENSE("GPL v2"); |