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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-sound-card.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-sound-card.patch76
1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-sound-card.patch b/target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-sound-card.patch
new file mode 100644
index 0000000000..bd8f405ef8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-sound-card.patch
@@ -0,0 +1,76 @@
+From 36949b2ea78d5782faed2fb00a037f37789fa85d Mon Sep 17 00:00:00 2001
+From: j-schambacher <joerg@i2audio.com>
+Date: Mon, 27 Jan 2020 20:37:34 +0100
+Subject: [PATCH] adds LED OFF feature to HiFiBerry DAC+ADC 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 ++
+ .../boot/dts/overlays/hifiberry-dacplusadc-overlay.dts | 1 +
+ sound/soc/bcm/hifiberry_dacplusadc.c | 10 +++++++++-
+ 3 files changed, 12 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -927,6 +927,8 @@ 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-dacplusadcpro
+--- a/arch/arm/boot/dts/overlays/hifiberry-dacplusadc-overlay.dts
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadc-overlay.dts
+@@ -67,5 +67,6 @@
+ 24db_digital_gain =
+ <&hifiberry_dacplusadc>,"hifiberry,24db_digital_gain?";
+ slave = <&hifiberry_dacplusadc>,"hifiberry-dacplusadc,slave?";
++ leds_off = <&hifiberry_dacplusadc>,"hifiberry-dacplusadc,leds_off?";
+ };
+ };
+--- a/sound/soc/bcm/hifiberry_dacplusadc.c
++++ b/sound/soc/bcm/hifiberry_dacplusadc.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 void snd_rpi_hifiberry_dacplusadc_select_clk(struct snd_soc_component *component,
+ int clk_id)
+@@ -175,7 +176,10 @@ static int snd_rpi_hifiberry_dacplusadc_
+
+ 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) {
+ int ret;
+@@ -254,6 +258,8 @@ static int snd_rpi_hifiberry_dacplusadc_
+ 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);
+ hifiberry_dacplusadc_LED_cnt++;
+@@ -330,6 +336,8 @@ static int snd_rpi_hifiberry_dacplusadc_
+ pdev->dev.of_node, "hifiberry,24db_digital_gain");
+ slave = of_property_read_bool(pdev->dev.of_node,
+ "hifiberry-dacplusadc,slave");
++ leds_off = of_property_read_bool(pdev->dev.of_node,
++ "hifiberry-dacplusadc,leds_off");
+
+ ret = devm_snd_soc_register_card(&pdev->dev,
+ &snd_rpi_hifiberry_dacplusadc);