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author | Stijn Tintel <stijn@linux-ipv6.be> | 2019-02-02 21:53:15 +0100 |
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committer | Stijn Tintel <stijn@linux-ipv6.be> | 2019-02-06 07:39:39 +0200 |
commit | c30f7f402f1be7a7917b3dd604ee32be8ed20716 (patch) | |
tree | c858e61a864a9409408cf3eb58b7e8800112c2e6 /target/linux/brcm2708/patches-4.9/950-0070-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch | |
parent | 12310f05b7b080b016ec515796be437f4cd30b62 (diff) | |
download | upstream-c30f7f402f1be7a7917b3dd604ee32be8ed20716.tar.gz upstream-c30f7f402f1be7a7917b3dd604ee32be8ed20716.tar.bz2 upstream-c30f7f402f1be7a7917b3dd604ee32be8ed20716.zip |
brcm2708: drop 4.9 support
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0070-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.9/950-0070-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch | 325 |
1 files changed, 0 insertions, 325 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0070-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch b/target/linux/brcm2708/patches-4.9/950-0070-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch deleted file mode 100644 index 08bf856c9f..0000000000 --- a/target/linux/brcm2708/patches-4.9/950-0070-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch +++ /dev/null @@ -1,325 +0,0 @@ -From fcfe9087b79176b5d8afd0ecc4c66013866ef239 Mon Sep 17 00:00:00 2001 -From: Gordon Garrity <gordon@iqaudio.com> -Date: Sat, 8 Mar 2014 16:56:57 +0000 -Subject: [PATCH] Add IQaudIO Sound Card support for Raspberry Pi - -Set a limit of 0dB on Digital Volume Control - -The main volume control in the PCM512x DAC has a range up to -+24dB. This is dangerously loud and can potentially cause massive -clipping in the output stages. Therefore this sets a sensible -limit of 0dB for this control. - -Allow up to 24dB digital gain to be applied when using IQAudIO DAC+ - -24db_digital_gain DT param can be used to specify that PCM512x -codec "Digital" volume control should not be limited to 0dB gain, -and if specified will allow the full 24dB gain. - -Modify IQAudIO DAC+ ASoC driver to set card/dai config from dt - -Add the ability to set the card name, dai name and dai stream name, from -dt config. - -Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk> - -IQaudIO: auto-mute for AMP+ and DigiAMP+ - -IQAudIO amplifier mute via GPIO22. Add dt params for "one-shot" unmute -and auto mute. - -Revision 2, auto mute implementing HiassofT suggestion to mute/unmute -using set_bias_level, rather than startup/shutdown.... -"By default DAPM waits 5 seconds (pmdown_time) before shutting down -playback streams so a close/stop immediately followed by open/start -doesn't trigger an amp mute+unmute." - -Tested on both AMP+ (via DAC+) and DigiAMP+, with both options... - -dtoverlay=iqaudio-dacplus,unmute_amp - "one-shot" unmute when kernel module loads. - -dtoverlay=iqaudio-dacplus,auto_mute_amp - Unmute amp when ALSA device opened by a client. Mute, with 5 second delay - when ALSA device closed. (Re-opening the device within the 5 second close - window, will cancel mute.) - -Revision 4, using gpiod. - -Revision 5, clean-up formatting before adding mute code. - - Convert tab plus 4 space formatting to 2x tab - - Remove '// NOT USED' commented code - -Revision 6, don't attempt to "one-shot" unmute amp, unless card is -successfully registered. - -Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk> ---- - sound/soc/bcm/Kconfig | 7 ++ - sound/soc/bcm/Makefile | 2 + - sound/soc/bcm/iqaudio-dac.c | 234 ++++++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 243 insertions(+) - create mode 100644 sound/soc/bcm/iqaudio-dac.c - ---- a/sound/soc/bcm/Kconfig -+++ b/sound/soc/bcm/Kconfig -@@ -37,3 +37,10 @@ config SND_BCM2708_SOC_RPI_DAC - select SND_SOC_PCM1794A - help - Say Y or M if you want to add support for RPi-DAC. -+ -+config SND_BCM2708_SOC_IQAUDIO_DAC -+ tristate "Support for IQaudIO-DAC" -+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S -+ select SND_SOC_PCM512x_I2C -+ help -+ Say Y or M if you want to add support for IQaudIO-DAC. ---- a/sound/soc/bcm/Makefile -+++ b/sound/soc/bcm/Makefile -@@ -12,7 +12,9 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc- - snd-soc-hifiberry-dac-objs := hifiberry_dac.o - snd-soc-hifiberry-digi-objs := hifiberry_digi.o - snd-soc-rpi-dac-objs := rpi-dac.o -+snd-soc-iqaudio-dac-objs := iqaudio-dac.o - - obj-$(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 -+obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o ---- /dev/null -+++ b/sound/soc/bcm/iqaudio-dac.c -@@ -0,0 +1,234 @@ -+/* -+ * ASoC Driver for IQaudIO DAC -+ * -+ * Author: 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/gpio/consumer.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> -+ -+static bool digital_gain_0db_limit = true; -+ -+static struct gpio_desc *mute_gpio; -+ -+static int snd_rpi_iqaudio_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; -+} -+ -+static int snd_rpi_iqaudio_dac_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 *cpu_dai = rtd->cpu_dai; -+ -+ unsigned int sample_bits = -+ snd_pcm_format_physical_width(params_format(params)); -+ -+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2); -+} -+ -+static void snd_rpi_iqaudio_gpio_mute(struct snd_soc_card *card) -+{ -+ if (mute_gpio) { -+ dev_info(card->dev, "%s: muting amp using GPIO22\n", -+ __func__); -+ gpiod_set_value_cansleep(mute_gpio, 0); -+ } -+} -+ -+static void snd_rpi_iqaudio_gpio_unmute(struct snd_soc_card *card) -+{ -+ if (mute_gpio) { -+ dev_info(card->dev, "%s: un-muting amp using GPIO22\n", -+ __func__); -+ gpiod_set_value_cansleep(mute_gpio, 1); -+ } -+} -+ -+static int snd_rpi_iqaudio_set_bias_level(struct snd_soc_card *card, -+ struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) -+{ -+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; -+ -+ if (dapm->dev != codec_dai->dev) -+ return 0; -+ -+ switch (level) { -+ case SND_SOC_BIAS_PREPARE: -+ if (dapm->bias_level != SND_SOC_BIAS_STANDBY) -+ break; -+ -+ /* UNMUTE AMP */ -+ snd_rpi_iqaudio_gpio_unmute(card); -+ -+ break; -+ case SND_SOC_BIAS_STANDBY: -+ if (dapm->bias_level != SND_SOC_BIAS_PREPARE) -+ break; -+ -+ /* MUTE AMP */ -+ snd_rpi_iqaudio_gpio_mute(card); -+ -+ break; -+ default: -+ break; -+ } -+ -+ return 0; -+} -+ -+/* machine stream operations */ -+static struct snd_soc_ops snd_rpi_iqaudio_dac_ops = { -+ .hw_params = snd_rpi_iqaudio_dac_hw_params, -+}; -+ -+static struct snd_soc_dai_link snd_rpi_iqaudio_dac_dai[] = { -+{ -+ .cpu_dai_name = "bcm2708-i2s.0", -+ .codec_dai_name = "pcm512x-hifi", -+ .platform_name = "bcm2708-i2s.0", -+ .codec_name = "pcm512x.1-004c", -+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | -+ SND_SOC_DAIFMT_CBS_CFS, -+ .ops = &snd_rpi_iqaudio_dac_ops, -+ .init = snd_rpi_iqaudio_dac_init, -+}, -+}; -+ -+/* audio machine driver */ -+static struct snd_soc_card snd_rpi_iqaudio_dac = { -+ .owner = THIS_MODULE, -+ .dai_link = snd_rpi_iqaudio_dac_dai, -+ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_dac_dai), -+}; -+ -+static int snd_rpi_iqaudio_dac_probe(struct platform_device *pdev) -+{ -+ int ret = 0; -+ bool gpio_unmute = false; -+ -+ snd_rpi_iqaudio_dac.dev = &pdev->dev; -+ -+ if (pdev->dev.of_node) { -+ struct device_node *i2s_node; -+ struct snd_soc_card *card = &snd_rpi_iqaudio_dac; -+ struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_dac_dai[0]; -+ bool auto_gpio_mute = false; -+ -+ 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, "iqaudio,24db_digital_gain"); -+ -+ if (of_property_read_string(pdev->dev.of_node, "card_name", -+ &card->name)) -+ card->name = "IQaudIODAC"; -+ -+ if (of_property_read_string(pdev->dev.of_node, "dai_name", -+ &dai->name)) -+ dai->name = "IQaudIO DAC"; -+ -+ if (of_property_read_string(pdev->dev.of_node, -+ "dai_stream_name", &dai->stream_name)) -+ dai->stream_name = "IQaudIO DAC HiFi"; -+ -+ /* gpio_unmute - one time unmute amp using GPIO */ -+ gpio_unmute = of_property_read_bool(pdev->dev.of_node, -+ "iqaudio-dac,unmute-amp"); -+ -+ /* auto_gpio_mute - mute/unmute amp using GPIO */ -+ auto_gpio_mute = of_property_read_bool(pdev->dev.of_node, -+ "iqaudio-dac,auto-mute-amp"); -+ -+ if (auto_gpio_mute || gpio_unmute) { -+ mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute", -+ GPIOD_OUT_LOW); -+ if (IS_ERR(mute_gpio)) { -+ ret = PTR_ERR(mute_gpio); -+ dev_err(&pdev->dev, -+ "Failed to get mute gpio: %d\n", ret); -+ return ret; -+ } -+ -+ if (auto_gpio_mute && mute_gpio) -+ snd_rpi_iqaudio_dac.set_bias_level = -+ snd_rpi_iqaudio_set_bias_level; -+ } -+ } -+ -+ ret = snd_soc_register_card(&snd_rpi_iqaudio_dac); -+ if (ret) { -+ dev_err(&pdev->dev, -+ "snd_soc_register_card() failed: %d\n", ret); -+ return ret; -+ } -+ -+ if (gpio_unmute && mute_gpio) -+ snd_rpi_iqaudio_gpio_unmute(&snd_rpi_iqaudio_dac); -+ -+ return 0; -+} -+ -+static int snd_rpi_iqaudio_dac_remove(struct platform_device *pdev) -+{ -+ snd_rpi_iqaudio_gpio_mute(&snd_rpi_iqaudio_dac); -+ -+ return snd_soc_unregister_card(&snd_rpi_iqaudio_dac); -+} -+ -+static const struct of_device_id iqaudio_of_match[] = { -+ { .compatible = "iqaudio,iqaudio-dac", }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, iqaudio_of_match); -+ -+static struct platform_driver snd_rpi_iqaudio_dac_driver = { -+ .driver = { -+ .name = "snd-rpi-iqaudio-dac", -+ .owner = THIS_MODULE, -+ .of_match_table = iqaudio_of_match, -+ }, -+ .probe = snd_rpi_iqaudio_dac_probe, -+ .remove = snd_rpi_iqaudio_dac_remove, -+}; -+ -+module_platform_driver(snd_rpi_iqaudio_dac_driver); -+ -+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>"); -+MODULE_DESCRIPTION("ASoC Driver for IQAudio DAC"); -+MODULE_LICENSE("GPL v2"); |