diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-PRO-sound-.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-PRO-sound-.patch | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0400-adds-LED-OFF-feature-to-HiFiBerry-DAC-ADC-PRO-sound-.patch b/target/linux/bcm27xx/patches-5.4/950-0400-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-5.4/950-0400-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, |