bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0396-adds-LED-OFF-feature-to-HiFiBerry-DAC-DAC-PRO-sound-.patch b/target/linux/bcm27xx/patches-5.4/950-0396-adds-LED-OFF-feature-to-HiFiBerry-DAC-DAC-PRO-sound-.patch
new file mode 100644
index 0000000000..a5c3d40512
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0396-adds-LED-OFF-feature-to-HiFiBerry-DAC-DAC-PRO-sound-.patch
@@ -0,0 +1,77 @@
+From 4b3cdf84c4d8156c01fa02e4d511f7529cae488f Mon Sep 17 00:00:00 2001
+From: j-schambacher <joerg@i2audio.com>
+Date: Mon, 27 Jan 2020 20:58:24 +0100
+Subject: [PATCH] adds LED OFF feature to HiFiBerry DAC+/DAC+PRO sound
+ cards
+
+This adds a DT overlay parameter 'leds_off' which allows
+to switch off the onboard activity LEDs at all times
+which has been requested by some users.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+---
+ arch/arm/boot/dts/overlays/README                      |  2 ++
+ .../boot/dts/overlays/hifiberry-dacplus-overlay.dts    |  1 +
+ sound/soc/bcm/hifiberry_dacplus.c                      | 10 +++++++++-
+ 3 files changed, 12 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -906,6 +906,8 @@ Params: 24db_digital_gain       Allow ga
+                                 that does not result in clipping/distortion!)
+         slave                   Force DAC+ Pro into slave mode, using Pi as
+                                 master for bit clock and frame clock.
++        leds_off                If set to 'true' the onboard indicator LEDs
++                                are switched off at all times.
+ 
+ 
+ Name:   hifiberry-dacplusadc
+--- a/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
+@@ -55,5 +55,6 @@
+ 		24db_digital_gain =
+ 			<&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
+ 		slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?";
++		leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?";
+ 	};
+ };
+--- a/sound/soc/bcm/hifiberry_dacplus.c
++++ b/sound/soc/bcm/hifiberry_dacplus.c
+@@ -50,6 +50,7 @@ struct pcm512x_priv {
+ static bool slave;
+ static bool snd_rpi_hifiberry_is_dacpro;
+ static bool digital_gain_0db_limit = true;
++static bool leds_off;
+ 
+ static void snd_rpi_hifiberry_dacplus_select_clk(struct snd_soc_component *component,
+ 	int clk_id)
+@@ -171,7 +172,10 @@ static int snd_rpi_hifiberry_dacplus_ini
+ 
+ 	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
+ 	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
+-	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++	if (leds_off)
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++	else
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
+ 
+ 	if (digital_gain_0db_limit)
+ 	{
+@@ -249,6 +253,8 @@ static int snd_rpi_hifiberry_dacplus_sta
+ 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ 	struct snd_soc_component *component = rtd->codec_dai->component;
+ 
++	if (leds_off)
++		return 0;
+ 	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
+ 	return 0;
+ }
+@@ -319,6 +325,8 @@ static int snd_rpi_hifiberry_dacplus_pro
+ 			pdev->dev.of_node, "hifiberry,24db_digital_gain");
+ 		slave = of_property_read_bool(pdev->dev.of_node,
+ 						"hifiberry-dacplus,slave");
++		leds_off = of_property_read_bool(pdev->dev.of_node,
++						"hifiberry-dacplus,leds_off");
+ 	}
+ 
+ 	ret = devm_snd_soc_register_card(&pdev->dev,