diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0070-Add-Support-for-JustBoom-Audio-boards.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0070-Add-Support-for-JustBoom-Audio-boards.patch | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0070-Add-Support-for-JustBoom-Audio-boards.patch b/target/linux/bcm27xx/patches-4.19/950-0070-Add-Support-for-JustBoom-Audio-boards.patch new file mode 100644 index 0000000000..68957f35db --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0070-Add-Support-for-JustBoom-Audio-boards.patch @@ -0,0 +1,173 @@ +From 0435c03e212129e384cd49b19fca7a55dbf1ec50 Mon Sep 17 00:00:00 2001 +From: Aaron Shaw <shawaj@gmail.com> +Date: Thu, 7 Apr 2016 21:26:21 +0100 +Subject: [PATCH] Add Support for JustBoom Audio boards + +justboom-dac: Adjust for ALSA API change + +As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card * +rather than a struct snd_soc_codec *. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> + +ASoC: justboom-dac: fix S24_LE format + +Remove set_bclk_ratio call so 24-bit data is transmitted in +24 bclk cycles. + +Also remove hw_params as it's no longer needed. + +Signed-off-by: Matthias Reichl <hias@horus.com> +--- + sound/soc/bcm/justboom-dac.c | 145 +++++++++++++++++++++++++++++++++++ + 1 file changed, 145 insertions(+) + create mode 100644 sound/soc/bcm/justboom-dac.c + +--- /dev/null ++++ b/sound/soc/bcm/justboom-dac.c +@@ -0,0 +1,145 @@ ++/* ++ * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card ++ * ++ * Author: Milan Neskovic ++ * Copyright 2016 ++ * based on code by Daniel Matuschek <info@crazy-audio.com> ++ * based on code by Florian Meier <florian.meier@koalo.de> ++ * ++ * 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/pcm512x.h" ++ ++static bool digital_gain_0db_limit = true; ++ ++static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08); ++ snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02); ++ snd_soc_component_update_bits(component, 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_dac_startup(struct snd_pcm_substream *substream) { ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08); ++ return 0; ++} ++ ++static void snd_rpi_justboom_dac_shutdown(struct snd_pcm_substream *substream) { ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x00); ++} ++ ++/* machine stream operations */ ++static struct snd_soc_ops snd_rpi_justboom_dac_ops = { ++ .startup = snd_rpi_justboom_dac_startup, ++ .shutdown = snd_rpi_justboom_dac_shutdown, ++}; ++ ++static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = { ++{ ++ .name = "JustBoom DAC", ++ .stream_name = "JustBoom DAC HiFi", ++ .cpu_dai_name = "bcm2708-i2s.0", ++ .codec_dai_name = "pcm512x-hifi", ++ .platform_name = "bcm2708-i2s.0", ++ .codec_name = "pcm512x.1-004d", ++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBS_CFS, ++ .ops = &snd_rpi_justboom_dac_ops, ++ .init = snd_rpi_justboom_dac_init, ++}, ++}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_rpi_justboom_dac = { ++ .name = "snd_rpi_justboom_dac", ++ .driver_name = "JustBoomDac", ++ .owner = THIS_MODULE, ++ .dai_link = snd_rpi_justboom_dac_dai, ++ .num_links = ARRAY_SIZE(snd_rpi_justboom_dac_dai), ++}; ++ ++static int snd_rpi_justboom_dac_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ ++ snd_rpi_justboom_dac.dev = &pdev->dev; ++ ++ if (pdev->dev.of_node) { ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai = &snd_rpi_justboom_dac_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 = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_justboom_dac); ++ if (ret && ret != -EPROBE_DEFER) ++ dev_err(&pdev->dev, ++ "snd_soc_register_card() failed: %d\n", ret); ++ ++ return ret; ++} ++ ++static const struct of_device_id snd_rpi_justboom_dac_of_match[] = { ++ { .compatible = "justboom,justboom-dac", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match); ++ ++static struct platform_driver snd_rpi_justboom_dac_driver = { ++ .driver = { ++ .name = "snd-rpi-justboom-dac", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_rpi_justboom_dac_of_match, ++ }, ++ .probe = snd_rpi_justboom_dac_probe, ++}; ++ ++module_platform_driver(snd_rpi_justboom_dac_driver); ++ ++MODULE_AUTHOR("Milan Neskovic <info@justboom.co>"); ++MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card"); ++MODULE_LICENSE("GPL v2"); |