From a1383655cfaa71609d6236ae0fcf3b6047462b98 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Sat, 29 Feb 2020 09:25:20 +0100 Subject: bcm27xx: add linux 5.4 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Tested on bcm2710 (Raspberry Pi 3B). Signed-off-by: Álvaro Fernández Rojas --- ...DAC-boards-Initial-2-channel-stereo-suppo.patch | 163 +++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.4/950-0068-Allo-Piano-DAC-boards-Initial-2-channel-stereo-suppo.patch (limited to 'target/linux/bcm27xx/patches-5.4/950-0068-Allo-Piano-DAC-boards-Initial-2-channel-stereo-suppo.patch') diff --git a/target/linux/bcm27xx/patches-5.4/950-0068-Allo-Piano-DAC-boards-Initial-2-channel-stereo-suppo.patch b/target/linux/bcm27xx/patches-5.4/950-0068-Allo-Piano-DAC-boards-Initial-2-channel-stereo-suppo.patch new file mode 100644 index 0000000000..bcb654c969 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0068-Allo-Piano-DAC-boards-Initial-2-channel-stereo-suppo.patch @@ -0,0 +1,163 @@ +From 9d9f0aa59569bf2aa826aea3a4a2d1ace3a155f4 Mon Sep 17 00:00:00 2001 +From: Clive Messer +Date: Mon, 19 Sep 2016 14:01:04 +0100 +Subject: [PATCH] Allo Piano DAC boards: Initial 2 channel (stereo) + support (#1645) + +Add initial 2 channel (stereo) support for Allo Piano DAC (2.0/2.1) boards, +using allo-piano-dac-pcm512x-audio overlay and allo-piano-dac ALSA ASoC +machine driver. + +NB. The initial support is 2 channel (stereo) ONLY! +(The Piano DAC 2.1 will only support 2 channel (stereo) left/right output, + pending an update to the upstream pcm512x codec driver, which will have + to be submitted via upstream. With the initial downstream support, + provided by this patch, the Piano DAC 2.1 subwoofer outputs will + not function.) + +Signed-off-by: Baswaraj K +Signed-off-by: Clive Messer +Tested-by: Clive Messer + +ASoC: allo-piano-dac: fix S24_LE format + +Remove set_bclk_ratio call so 24-bit data is transmitted in +24 bclk cycles. + +Also remove hw_params and ops as they are no longer needed. + +Signed-off-by: Matthias Reichl + +ASoC: allo-piano-dac: use modern dai_link style + +Signed-off-by: Hui Wang +--- + sound/soc/bcm/allo-piano-dac.c | 122 +++++++++++++++++++++++++++++++++ + 1 file changed, 122 insertions(+) + create mode 100644 sound/soc/bcm/allo-piano-dac.c + +--- /dev/null ++++ b/sound/soc/bcm/allo-piano-dac.c +@@ -0,0 +1,122 @@ ++/* ++ * ALSA ASoC Machine Driver for Allo Piano DAC ++ * ++ * Author: Baswaraj K ++ * Copyright 2016 ++ * based on code by Daniel Matuschek ++ * based on code by Florian Meier ++ * ++ * 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 ++ ++static bool digital_gain_0db_limit = true; ++ ++static int snd_allo_piano_dac_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ 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; ++} ++ ++SND_SOC_DAILINK_DEFS(allo_piano_dai, ++ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), ++ DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004c", "pcm512x-hifi")), ++ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0"))); ++ ++static struct snd_soc_dai_link snd_allo_piano_dac_dai[] = { ++{ ++ .name = "Piano DAC", ++ .stream_name = "Piano DAC HiFi", ++ .dai_fmt = SND_SOC_DAIFMT_I2S | ++ SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBS_CFS, ++ .init = snd_allo_piano_dac_init, ++ SND_SOC_DAILINK_REG(allo_piano_dai), ++}, ++}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_allo_piano_dac = { ++ .name = "PianoDAC", ++ .owner = THIS_MODULE, ++ .dai_link = snd_allo_piano_dac_dai, ++ .num_links = ARRAY_SIZE(snd_allo_piano_dac_dai), ++}; ++ ++static int snd_allo_piano_dac_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ ++ snd_allo_piano_dac.dev = &pdev->dev; ++ ++ if (pdev->dev.of_node) { ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai; ++ ++ dai = &snd_allo_piano_dac_dai[0]; ++ i2s_node = of_parse_phandle(pdev->dev.of_node, ++ "i2s-controller", 0); ++ ++ if (i2s_node) { ++ dai->cpus->dai_name = NULL; ++ dai->cpus->of_node = i2s_node; ++ dai->platforms->name = NULL; ++ dai->platforms->of_node = i2s_node; ++ } ++ ++ digital_gain_0db_limit = !of_property_read_bool( ++ pdev->dev.of_node, "allo,24db_digital_gain"); ++ } ++ ++ ret = devm_snd_soc_register_card(&pdev->dev, &snd_allo_piano_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_allo_piano_dac_of_match[] = { ++ { .compatible = "allo,piano-dac", }, ++ { /* sentinel */ }, ++}; ++MODULE_DEVICE_TABLE(of, snd_allo_piano_dac_of_match); ++ ++static struct platform_driver snd_allo_piano_dac_driver = { ++ .driver = { ++ .name = "snd-allo-piano-dac", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_allo_piano_dac_of_match, ++ }, ++ .probe = snd_allo_piano_dac_probe, ++}; ++ ++module_platform_driver(snd_allo_piano_dac_driver); ++ ++MODULE_AUTHOR("Baswaraj K "); ++MODULE_DESCRIPTION("ALSA ASoC Machine Driver for Allo Piano DAC"); ++MODULE_LICENSE("GPL v2"); -- cgit v1.2.3