mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 07:22:33 +00:00
20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
144 lines
4.4 KiB
Diff
144 lines
4.4 KiB
Diff
From 74de23a947ad5964b25e9f9f15329d3174488fea Mon Sep 17 00:00:00 2001
|
|
From: Joerg Schambacher <joerg@hifiberry.com>
|
|
Date: Wed, 6 Oct 2021 17:21:07 +0200
|
|
Subject: [PATCH] Hifiberry DAC+ADCPro: adding optional headphone amp
|
|
control
|
|
|
|
This is a copy of the code and approach from our DAC+ driver.
|
|
It allows to probe (and activate) an optional TPA6130A2 headphone
|
|
amplifier. Updated email address.
|
|
|
|
Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
|
|
---
|
|
sound/soc/bcm/Kconfig | 3 +-
|
|
sound/soc/bcm/hifiberry_dacplusadcpro.c | 74 ++++++++++++++++++++++++-
|
|
2 files changed, 73 insertions(+), 4 deletions(-)
|
|
|
|
--- a/sound/soc/bcm/Kconfig
|
|
+++ b/sound/soc/bcm/Kconfig
|
|
@@ -79,7 +79,8 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
|
|
tristate "Support for HifiBerry DAC+ADC PRO"
|
|
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
|
|
select SND_SOC_PCM512x_I2C
|
|
- select SND_SOC_PCM186X_I2C
|
|
+ select SND_SOC_PCM186X_I2C
|
|
+ select SND_SOC_TPA6130A2
|
|
select COMMON_CLK_HIFIBERRY_DACPRO
|
|
help
|
|
Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
|
|
--- a/sound/soc/bcm/hifiberry_dacplusadcpro.c
|
|
+++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
|
|
@@ -4,8 +4,8 @@
|
|
* Author: Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
|
|
* Copyright 2014-2015
|
|
* based on code by Florian Meier <florian.meier@koalo.de>
|
|
- * ADC added by Joerg Schambacher <joerg@i2audio.com>
|
|
- * Copyright 2018-19
|
|
+ * ADC, HP added by Joerg Schambacher <joerg@hifiberry.com>
|
|
+ * Copyright 2018-21
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
@@ -26,6 +26,7 @@
|
|
#include <linux/of.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/delay.h>
|
|
+#include <linux/i2c.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
@@ -468,6 +469,15 @@ static struct snd_soc_dai_link snd_rpi_h
|
|
},
|
|
};
|
|
|
|
+/* aux device for optional headphone amp */
|
|
+static struct snd_soc_aux_dev hifiberry_dacplusadcpro_aux_devs[] = {
|
|
+ {
|
|
+ .dlc = {
|
|
+ .name = "tpa6130a2.1-0060",
|
|
+ },
|
|
+ },
|
|
+};
|
|
+
|
|
/* audio machine driver */
|
|
static struct snd_soc_card snd_rpi_hifiberry_dacplusadcpro = {
|
|
.name = "snd_rpi_hifiberry_dacplusadcpro",
|
|
@@ -477,10 +487,68 @@ static struct snd_soc_card snd_rpi_hifib
|
|
.num_links = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadcpro_dai),
|
|
};
|
|
|
|
+static int hb_hp_detect(void)
|
|
+{
|
|
+ struct i2c_adapter *adap = i2c_get_adapter(1);
|
|
+ int ret;
|
|
+ struct i2c_client tpa_i2c_client = {
|
|
+ .addr = 0x60,
|
|
+ .adapter = adap,
|
|
+ };
|
|
+
|
|
+ if (!adap)
|
|
+ return -EPROBE_DEFER; /* I2C module not yet available */
|
|
+
|
|
+ ret = i2c_smbus_read_byte(&tpa_i2c_client) >= 0;
|
|
+ i2c_put_adapter(adap);
|
|
+ return ret;
|
|
+};
|
|
+
|
|
+static struct property tpa_enable_prop = {
|
|
+ .name = "status",
|
|
+ .length = 4 + 1, /* length 'okay' + 1 */
|
|
+ .value = "okay",
|
|
+ };
|
|
+
|
|
static int snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev)
|
|
{
|
|
int ret = 0, i = 0;
|
|
struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro;
|
|
+ struct device_node *tpa_node;
|
|
+ struct property *tpa_prop;
|
|
+ struct of_changeset ocs;
|
|
+ int len;
|
|
+
|
|
+ /* probe for head phone amp */
|
|
+ ret = hb_hp_detect();
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+ if (ret) {
|
|
+ card->aux_dev = hifiberry_dacplusadcpro_aux_devs;
|
|
+ card->num_aux_devs =
|
|
+ ARRAY_SIZE(hifiberry_dacplusadcpro_aux_devs);
|
|
+ tpa_node = of_find_compatible_node(NULL, NULL, "ti,tpa6130a2");
|
|
+ tpa_prop = of_find_property(tpa_node, "status", &len);
|
|
+
|
|
+ if (strcmp((char *)tpa_prop->value, "okay")) {
|
|
+ /* and activate headphone using change_sets */
|
|
+ dev_info(&pdev->dev, "activating headphone amplifier");
|
|
+ of_changeset_init(&ocs);
|
|
+ ret = of_changeset_update_property(&ocs, tpa_node,
|
|
+ &tpa_enable_prop);
|
|
+ if (ret) {
|
|
+ dev_err(&pdev->dev,
|
|
+ "cannot activate headphone amplifier\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
+ ret = of_changeset_apply(&ocs);
|
|
+ if (ret) {
|
|
+ dev_err(&pdev->dev,
|
|
+ "cannot activate headphone amplifier\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
|
|
snd_rpi_hifiberry_dacplusadcpro.dev = &pdev->dev;
|
|
if (pdev->dev.of_node) {
|
|
@@ -531,7 +599,7 @@ static struct platform_driver snd_rpi_hi
|
|
|
|
module_platform_driver(snd_rpi_hifiberry_dacplusadcpro_driver);
|
|
|
|
-MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
|
|
+MODULE_AUTHOR("Joerg Schambacher <joerg@hifiberry.com>");
|
|
MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
|
|
MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
|
|
MODULE_LICENSE("GPL v2");
|