diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0780-Allow-simultaneous-use-of-JustBoom-DAC-and-Digi.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0780-Allow-simultaneous-use-of-JustBoom-DAC-and-Digi.patch | 435 |
1 files changed, 435 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0780-Allow-simultaneous-use-of-JustBoom-DAC-and-Digi.patch b/target/linux/brcm2708/patches-4.19/950-0780-Allow-simultaneous-use-of-JustBoom-DAC-and-Digi.patch new file mode 100644 index 0000000000..c8b4820c93 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0780-Allow-simultaneous-use-of-JustBoom-DAC-and-Digi.patch @@ -0,0 +1,435 @@ +From 8f11db84e124da59b8a717d66fc424ef070f4be0 Mon Sep 17 00:00:00 2001 +From: Johannes Krude <johannes@krude.de> +Date: Sat, 16 Nov 2019 13:14:43 +0100 +Subject: [PATCH] Allow simultaneous use of JustBoom DAC and Digi + +Signed-off-by: Johannes Krude <johannes@krude.de> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 20 ++ + .../dts/overlays/justboom-both-overlay.dts | 65 +++++ + sound/soc/bcm/Kconfig | 12 + + sound/soc/bcm/Makefile | 2 + + sound/soc/bcm/justboom-both.c | 269 ++++++++++++++++++ + 11 files changed, 374 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/justboom-both-overlay.dts + create mode 100644 sound/soc/bcm/justboom-both.c + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -86,6 +86,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + iqaudio-digi-wm8804-audio.dtbo \ + irs1125.dtbo \ + jedec-spi-nor.dtbo \ ++ justboom-both.dtbo \ + justboom-dac.dtbo \ + justboom-digi.dtbo \ + ltc294x.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -1388,6 +1388,26 @@ Params: flash-spi<n>-<m> Enables + on SPI<n>, CS#<m>. + + ++Name: justboom-both ++Info: Simultaneous usage of an justboom-dac and justboom-digi based ++ card ++Load: dtoverlay=justboom-both,<param>=<val> ++Params: 24db_digital_gain Allow gain to be applied via the PCM512x codec ++ Digital volume control. Enable with ++ "dtoverlay=justboom-dac,24db_digital_gain" ++ (The default behaviour is that the Digital ++ volume control is limited to a maximum of ++ 0dB. ie. it can attenuate but not provide ++ gain. For most users, this will be desired ++ as it will prevent clipping. By appending ++ the 24dB_digital_gain parameter, the Digital ++ volume control will allow up to 24dB of ++ gain. If this parameter is enabled, it is the ++ responsibility of the user to ensure that ++ the Digital volume control is set to a value ++ that does not result in clipping/distortion!) ++ ++ + Name: justboom-dac + Info: Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio + cards +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/justboom-both-overlay.dts +@@ -0,0 +1,65 @@ ++// SPDX-License-Identifier: GPL-2.0 ++// Definitions for JustBoom Both (Digi+DAC) ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ target = <&i2s>; ++ __overlay__ { ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&i2c1>; ++ __overlay__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ status = "okay"; ++ ++ wm8804@3b { ++ #sound-dai-cells = <0>; ++ compatible = "wlf,wm8804"; ++ reg = <0x3b>; ++ PVDD-supply = <&vdd_3v3_reg>; ++ DVDD-supply = <&vdd_3v3_reg>; ++ status = "okay"; ++ }; ++ }; ++ }; ++ ++ fragment@2 { ++ target = <&i2c1>; ++ __overlay__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ status = "okay"; ++ ++ pcm5122@4d { ++ #sound-dai-cells = <0>; ++ compatible = "ti,pcm5122"; ++ reg = <0x4d>; ++ AVDD-supply = <&vdd_3v3_reg>; ++ DVDD-supply = <&vdd_3v3_reg>; ++ CPVDD-supply = <&vdd_3v3_reg>; ++ status = "okay"; ++ }; ++ }; ++ }; ++ ++ fragment@3 { ++ target = <&sound>; ++ frag3: __overlay__ { ++ compatible = "justboom,justboom-both"; ++ i2s-controller = <&i2s>; ++ status = "okay"; ++ }; ++ }; ++ ++ __overrides__ { ++ 24db_digital_gain = <&frag3>,"justboom,24db_digital_gain?"; ++ }; ++}; +--- a/sound/soc/bcm/Kconfig ++++ b/sound/soc/bcm/Kconfig +@@ -102,6 +102,18 @@ config SND_BCM2708_SOC_RPI_PROTO + help + Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731). + ++config SND_BCM2708_SOC_JUSTBOOM_BOTH ++ tristate "Support for simultaneous JustBoom Digi and JustBoom DAC" ++ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S ++ select SND_SOC_WM8804 ++ select SND_SOC_PCM512x ++ help ++ Say Y or M if you want to add support for simultaneous ++ JustBoom Digi and JustBoom DAC. ++ ++ This is not the right choice if you only have one but both of ++ these cards. ++ + config SND_BCM2708_SOC_JUSTBOOM_DAC + tristate "Support for JustBoom DAC" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S +--- a/sound/soc/bcm/Makefile ++++ b/sound/soc/bcm/Makefile +@@ -16,6 +16,7 @@ snd-soc-hifiberry-dacplus-objs := hifibe + snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o + snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o + snd-soc-hifiberry-dacplusdsp-objs := hifiberry_dacplusdsp.o ++snd-soc-justboom-both-objs := justboom-both.o + snd-soc-justboom-dac-objs := justboom-dac.o + snd-soc-rpi-cirrus-objs := rpi-cirrus.o + snd-soc-rpi-proto-objs := rpi-proto.o +@@ -42,6 +43,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP) += snd-soc-hifiberry-dacplusdsp.o ++obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH) += snd-soc-justboom-both.o + obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o + obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o + obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o +--- /dev/null ++++ b/sound/soc/bcm/justboom-both.c +@@ -0,0 +1,269 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* ++ * rpi--wm8804.c -- ALSA SoC Raspberry Pi soundcard. ++ * ++ * Authors: Johannes Krude <johannes@krude.de ++ * ++ * Driver for when connecting simultaneously justboom-digi and justboom-dac ++ * ++ * Based upon code from: ++ * justboom-digi.c ++ * by Milan Neskovic <info@justboom.co> ++ * justboom-dac.c ++ * by Milan Neskovic <info@justboom.co> ++ * ++ * 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" ++#include "../codecs/pcm512x.h" ++ ++ ++static bool digital_gain_0db_limit = true; ++ ++static int snd_rpi_justboom_both_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ struct snd_soc_component *digi = rtd->codec_dais[0]->component; ++ struct snd_soc_component *dac = rtd->codec_dais[1]->component; ++ ++ /* enable TX output */ ++ snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x4, 0x0); ++ ++ snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08); ++ snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02); ++ snd_soc_component_update_bits(dac, 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_both_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_component *digi = rtd->codec_dais[0]->component; ++ 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(rtd->card->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(rtd->card->dev, ++ "Failed to set WM8804 SYSCLK: %d\n", ret); ++ return ret; ++ } ++ ++ /* Enable TX output */ ++ snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x4, 0x0); ++ ++ /* Power on */ ++ snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x9, 0); ++ ++ /* set sampling frequency status bits */ ++ snd_soc_component_update_bits(digi, WM8804_SPDTX4, 0x0f, sampling_freq); ++ ++ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64); ++} ++ ++static int snd_rpi_justboom_both_startup(struct snd_pcm_substream *substream) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_component *digi = rtd->codec_dais[0]->component; ++ struct snd_soc_component *dac = rtd->codec_dais[1]->component; ++ ++ /* turn on digital output */ ++ snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x3c, 0x00); ++ ++ snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08); ++ ++ return 0; ++} ++ ++static void snd_rpi_justboom_both_shutdown(struct snd_pcm_substream *substream) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_component *digi = rtd->codec_dais[0]->component; ++ struct snd_soc_component *dac = rtd->codec_dais[1]->component; ++ ++ snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00); ++ ++ /* turn off output */ ++ snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x3c, 0x3c); ++} ++ ++/* machine stream operations */ ++static struct snd_soc_ops snd_rpi_justboom_both_ops = { ++ .hw_params = snd_rpi_justboom_both_hw_params, ++ .startup = snd_rpi_justboom_both_startup, ++ .shutdown = snd_rpi_justboom_both_shutdown, ++}; ++ ++static struct snd_soc_dai_link_component justboom_both_codecs[] = { ++{ ++ .dai_name = "wm8804-spdif", ++ .name = "wm8804.1-003b", ++}, ++{ ++ .dai_name = "pcm512x-hifi", ++ .name = "pcm512x.1-004d", ++}, ++}; ++ ++static struct snd_soc_dai_link snd_rpi_justboom_both_dai[] = { ++{ ++ .name = "JustBoom Digi", ++ .stream_name = "JustBoom Digi HiFi", ++ .cpu_dai_name = "bcm2708-i2s.0", ++ .platform_name = "bcm2708-i2s.0", ++ .codecs = justboom_both_codecs, ++ .num_codecs = ARRAY_SIZE(justboom_both_codecs), ++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBM_CFM, ++ .ops = &snd_rpi_justboom_both_ops, ++ .init = snd_rpi_justboom_both_init, ++}, ++}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_rpi_justboom_both = { ++ .name = "snd_rpi_justboom_both", ++ .driver_name = "JustBoomBoth", ++ .owner = THIS_MODULE, ++ .dai_link = snd_rpi_justboom_both_dai, ++ .num_links = ARRAY_SIZE(snd_rpi_justboom_both_dai), ++}; ++ ++static int snd_rpi_justboom_both_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ ++ snd_rpi_justboom_both.dev = &pdev->dev; ++ ++ if (pdev->dev.of_node) { ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai = &snd_rpi_justboom_both_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 = snd_soc_register_card(&snd_rpi_justboom_both); ++ if (ret && ret != -EPROBE_DEFER) { ++ dev_err(&pdev->dev, ++ "snd_soc_register_card() failed: %d\n", ret); ++ } ++ ++ return ret; ++} ++ ++static int snd_rpi_justboom_both_remove(struct platform_device *pdev) ++{ ++ return snd_soc_unregister_card(&snd_rpi_justboom_both); ++} ++ ++static const struct of_device_id snd_rpi_justboom_both_of_match[] = { ++ { .compatible = "justboom,justboom-both", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, snd_rpi_justboom_both_of_match); ++ ++static struct platform_driver snd_rpi_justboom_both_driver = { ++ .driver = { ++ .name = "snd-rpi-justboom-both", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_rpi_justboom_both_of_match, ++ }, ++ .probe = snd_rpi_justboom_both_probe, ++ .remove = snd_rpi_justboom_both_remove, ++}; ++ ++module_platform_driver(snd_rpi_justboom_both_driver); ++ ++MODULE_AUTHOR("Johannes Krude <johannes@krude.de>"); ++MODULE_DESCRIPTION("ASoC Driver for simultaneous use of JustBoom PI Digi & DAC HAT Sound Cards"); ++MODULE_LICENSE("GPL v2"); |