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90 lines
3.7 KiB
Diff
90 lines
3.7 KiB
Diff
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From 4a773d6535c3386044490156264ebd2a3b1bc38b Mon Sep 17 00:00:00 2001
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From: j-schambacher <joerg@i2audio.com>
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Date: Mon, 27 Jan 2020 17:45:51 +0100
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Subject: [PATCH] adds LED OFF feature to HiFiBerry DAC+ADC PRO sound
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card
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This adds a DT overlay parameter 'leds_off' which allows
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to switch off the onboard activity LEDs at all times
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which has been requested by some users.
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Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
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---
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arch/arm/boot/dts/overlays/README | 2 ++
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.../overlays/hifiberry-dacplusadcpro-overlay.dts | 1 +
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sound/soc/bcm/hifiberry_dacplusadcpro.c | 15 +++++++++++++--
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3 files changed, 16 insertions(+), 2 deletions(-)
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -948,6 +948,8 @@ Params: 24db_digital_gain Allow ga
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that does not result in clipping/distortion!)
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slave Force DAC+ADC Pro into slave mode, using Pi as
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master for bit clock and frame clock.
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+ leds_off If set to 'true' the onboard indicator LEDs
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+ are switched off at all times.
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Name: hifiberry-dacplusdsp
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--- a/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
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@@ -60,5 +60,6 @@
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24db_digital_gain =
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<&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,24db_digital_gain?";
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slave = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,slave?";
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+ leds_off = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,leds_off?";
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};
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};
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--- a/sound/soc/bcm/hifiberry_dacplusadcpro.c
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+++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
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@@ -54,6 +54,7 @@ struct pcm512x_priv {
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static bool slave;
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static bool snd_rpi_hifiberry_is_dacpro;
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static bool digital_gain_0db_limit = true;
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+static bool leds_off;
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static const unsigned int pcm186x_adc_input_channel_sel_value[] = {
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0x00, 0x01, 0x02, 0x03, 0x10
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@@ -321,7 +322,10 @@ static int snd_rpi_hifiberry_dacplusadcp
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snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08);
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snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
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- snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
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+ if (leds_off)
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+ snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
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+ else
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+ snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
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ret = pcm1863_add_controls(adc);
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if (ret < 0)
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@@ -331,7 +335,10 @@ static int snd_rpi_hifiberry_dacplusadcp
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/* set GPIO2 to output, GPIO3 input */
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snd_soc_component_write(adc, PCM186X_GPIO3_2_CTRL, 0x00);
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snd_soc_component_write(adc, PCM186X_GPIO3_2_DIR_CTRL, 0x04);
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- snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
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+ if (leds_off)
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+ snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00);
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+ else
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+ snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
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if (digital_gain_0db_limit) {
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int ret;
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@@ -417,6 +424,8 @@ static int snd_rpi_hifiberry_dacplusadcp
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struct snd_soc_component *dac = rtd->codec_dais[0]->component;
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struct snd_soc_component *adc = rtd->codec_dais[1]->component;
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+ if (leds_off)
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+ return 0;
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/* switch on respective LED */
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if (!substream->stream)
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snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
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@@ -500,6 +509,8 @@ static int snd_rpi_hifiberry_dacplusadcp
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pdev->dev.of_node, "hifiberry-dacplusadcpro,24db_digital_gain");
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slave = of_property_read_bool(pdev->dev.of_node,
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"hifiberry-dacplusadcpro,slave");
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+ leds_off = of_property_read_bool(pdev->dev.of_node,
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+ "hifiberry-dacplusadcpro,leds_off");
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ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplusadcpro);
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if (ret && ret != -EPROBE_DEFER)
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dev_err(&pdev->dev,
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