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, 89 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0394-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-PRO-sound-.patch b/target/linux/bcm27xx/patches-5.4/950-0394-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-PRO-sound-.patch
new file mode 100644
index 0000000000..397a2c3331
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0394-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-PRO-sound-.patch
@@ -0,0 +1,89 @@
+From 4a773d6535c3386044490156264ebd2a3b1bc38b Mon Sep 17 00:00:00 2001
+From: j-schambacher <joerg@i2audio.com>
+Date: Mon, 27 Jan 2020 17:45:51 +0100
+Subject: [PATCH] adds LED OFF feature to HiFiBerry DAC+ADC PRO sound
+ card
+
+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 ++
+ .../overlays/hifiberry-dacplusadcpro-overlay.dts  |  1 +
+ sound/soc/bcm/hifiberry_dacplusadcpro.c           | 15 +++++++++++++--
+ 3 files changed, 16 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -948,6 +948,8 @@ Params: 24db_digital_gain       Allow ga
+                                 that does not result in clipping/distortion!)
+         slave                   Force DAC+ADC 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-dacplusdsp
+--- a/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
+@@ -60,5 +60,6 @@
+ 		24db_digital_gain =
+ 			<&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,24db_digital_gain?";
+ 		slave = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,slave?";
++		leds_off = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,leds_off?";
+ 	};
+ };
+--- a/sound/soc/bcm/hifiberry_dacplusadcpro.c
++++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
+@@ -54,6 +54,7 @@ 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 const unsigned int pcm186x_adc_input_channel_sel_value[] = {
+ 	0x00, 0x01, 0x02, 0x03, 0x10
+@@ -321,7 +322,10 @@ static int snd_rpi_hifiberry_dacplusadcp
+ 
+ 	snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08);
+ 	snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
+-	snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++	if (leds_off)
++		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++	else
++		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
+ 
+ 	ret = pcm1863_add_controls(adc);
+ 	if (ret < 0)
+@@ -331,7 +335,10 @@ static int snd_rpi_hifiberry_dacplusadcp
+ 	/* set GPIO2 to output, GPIO3 input */
+ 	snd_soc_component_write(adc, PCM186X_GPIO3_2_CTRL, 0x00);
+ 	snd_soc_component_write(adc, PCM186X_GPIO3_2_DIR_CTRL, 0x04);
+-	snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
++	if (leds_off)
++		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00);
++	else
++		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
+ 
+ 	if (digital_gain_0db_limit) {
+ 		int ret;
+@@ -417,6 +424,8 @@ static int snd_rpi_hifiberry_dacplusadcp
+ 	struct snd_soc_component *dac = rtd->codec_dais[0]->component;
+ 	struct snd_soc_component *adc = rtd->codec_dais[1]->component;
+ 
++	if (leds_off)
++		return 0;
+ 	/* switch on respective LED */
+ 	if (!substream->stream)
+ 		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
+@@ -500,6 +509,8 @@ static int snd_rpi_hifiberry_dacplusadcp
+ 		pdev->dev.of_node, "hifiberry-dacplusadcpro,24db_digital_gain");
+ 	slave = of_property_read_bool(pdev->dev.of_node,
+ 					"hifiberry-dacplusadcpro,slave");
++	leds_off = of_property_read_bool(pdev->dev.of_node,
++					"hifiberry-dacplusadcpro,leds_off");
+ 	ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplusadcpro);
+ 	if (ret && ret != -EPROBE_DEFER)
+ 		dev_err(&pdev->dev,