bcm27xx: remove obsolete kernel 5.4

With the upgrade to kernel 5.10 per default the old version is no
longer required to be in tree.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 134 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0883-Enhances-the-DAC-driver-to-control-the-optional-head.patch b/target/linux/bcm27xx/patches-5.4/950-0883-Enhances-the-DAC-driver-to-control-the-optional-head.patch
deleted file mode 100644
index 128906026d..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0883-Enhances-the-DAC-driver-to-control-the-optional-head.patch
+++ /dev/null
@@ -1,134 +0,0 @@
-From defa915bf0acf6ab5e56997a6733546c33f87682 Mon Sep 17 00:00:00 2001
-From: Joerg Schambacher <joerg@i2audio.com>
-Date: Tue, 7 Jul 2020 15:09:06 +0200
-Subject: [PATCH] Enhances the DAC+ driver to control the optional
- headphone amplifier
-
-Probes on the I2C bus for TPA6130A2, if successful, it sets DT-parameter
-'status' from 'disabled' to 'okay' using change_sets to enable
-the headphone control.
-
-Signed-off-by: Joerg Schambacher joerg@i2audio.com
----
- sound/soc/bcm/Kconfig             |  1 +
- sound/soc/bcm/hifiberry_dacplus.c | 68 ++++++++++++++++++++++++++++++-
- 2 files changed, 67 insertions(+), 2 deletions(-)
-
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -38,6 +38,7 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
-         tristate "Support for HifiBerry DAC+"
-         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-         select SND_SOC_PCM512x
-+        select SND_SOC_TPA6130A2
-         select COMMON_CLK_HIFIBERRY_DACPRO
-         help
-          Say Y or M if you want to add support for HifiBerry DAC+.
---- a/sound/soc/bcm/hifiberry_dacplus.c
-+++ b/sound/soc/bcm/hifiberry_dacplus.c
-@@ -4,6 +4,7 @@
-  * Author:	Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
-  *		Copyright 2014-2015
-  *		based on code by Florian Meier <florian.meier@koalo.de>
-+ *		Headphone added by Joerg Schambacher, joerg@i2audio.com
-  *
-  * This program is free software; you can redistribute it and/or
-  * modify it under the terms of the GNU General Public License
-@@ -24,6 +25,7 @@
- #include <linux/of.h>
- #include <linux/slab.h>
- #include <linux/delay.h>
-+#include <linux/i2c.h>
- 
- #include <sound/core.h>
- #include <sound/pcm.h>
-@@ -177,8 +179,7 @@ static int snd_rpi_hifiberry_dacplus_ini
- 	else
- 		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
- 
--	if (digital_gain_0db_limit)
--	{
-+	if (digital_gain_0db_limit) {
- 		int ret;
- 		struct snd_soc_card *card = rtd->card;
- 
-@@ -292,6 +293,15 @@ static struct snd_soc_dai_link snd_rpi_h
- },
- };
- 
-+/* aux device for optional headphone amp */
-+static struct snd_soc_aux_dev hifiberry_dacplus_aux_devs[] = {
-+	{
-+		.dlc = {
-+			.name = "tpa6130a2.1-0060",
-+		},
-+	},
-+};
-+
- /* audio machine driver */
- static struct snd_soc_card snd_rpi_hifiberry_dacplus = {
- 	.name         = "snd_rpi_hifiberry_dacplus",
-@@ -301,9 +311,63 @@ static struct snd_soc_card snd_rpi_hifib
- 	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_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,
-+	};
-+
-+	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_dacplus_probe(struct platform_device *pdev)
- {
- 	int ret = 0;
-+	struct snd_soc_card *card = &snd_rpi_hifiberry_dacplus;
-+	int len;
-+	struct device_node *tpa_node;
-+	struct property *tpa_prop;
-+	struct of_changeset ocs;
-+
-+	/* probe for head phone amp */
-+	if (hb_hp_detect()) {
-+		card->aux_dev = hifiberry_dacplus_aux_devs;
-+		card->num_aux_devs =
-+				ARRAY_SIZE(hifiberry_dacplus_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_dacplus.dev = &pdev->dev;
- 	if (pdev->dev.of_node) {