target/linux/bcm27xx/patches-5.15/950-0305-staging-bcm2835-audio-Add-disable-headphones-flag.patch

   1 From ff97c20aea1878155c3576516b689c6b3639d92a Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Mon, 26 Oct 2020 10:23:22 +0000
   4 Subject: [PATCH] staging: bcm2835-audio: Add disable-headphones flag
   5
   6 Add a property to allow the headphone output to be disabled. Use an
   7 integer property rather than a boolean so that an overlay can clear it.
   8
   9 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  10 ---
  11  drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 9 +++++++--
  12  1 file changed, 7 insertions(+), 2 deletions(-)
  13
  14 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
  15 +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
  16 @@ -381,11 +381,16 @@ static int snd_bcm2835_alsa_probe(struct
  17         }
  18
  19         if (!enable_compat_alsa) {
  20 +               // In this mode, enable analog output by default
  21 +               u32 disable_headphones = 0;
  22 +
  23                 if (!of_property_read_bool(dev->of_node, "brcm,disable-hdmi"))
  24                         set_hdmi_enables(dev);
  25
  26 -               // In this mode, always enable analog output
  27 -               enable_headphones = true;
  28 +               of_property_read_u32(dev->of_node,
  29 +                                    "brcm,disable-headphones",
  30 +                                    &disable_headphones);
  31 +               enable_headphones = !disable_headphones;
  32         } else {
  33                 enable_hdmi0 = enable_hdmi;
  34         }