diff options
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.patch | 76 |
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); |