target/linux/brcm2708/patches-4.4/0490-overlays-Add-swap_lr-and-enable_jack-to-audremap.patch

   1 From f8e026145de28acf5e36183f5c8b489bf172e9c8 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Fri, 19 Aug 2016 15:39:01 +0100
   4 Subject: [PATCH] overlays: Add swap_lr and enable_jack to audremap
   5
   6 swap_lr causes the channels to be reversed, and enable_jack prevents the
   7 headphone output from being disabled.
   8
   9 See: https://github.com/raspberrypi/linux/issues/1473
  10 ---
  11  arch/arm/boot/dts/overlays/README               | 9 ++++++---
  12  arch/arm/boot/dts/overlays/audremap-overlay.dts | 7 ++++++-
  13  2 files changed, 12 insertions(+), 4 deletions(-)
  14
  15 --- a/arch/arm/boot/dts/overlays/README
  16 +++ b/arch/arm/boot/dts/overlays/README
  17 @@ -254,9 +254,12 @@ Params: <None>
  18
  19
  20  Name:   audremap
  21 -Info:   Switches PWM sound output to pins 12 & 13
  22 -Load:   dtoverlay=audremap
  23 -Params: <None>
  24 +Info:   Switches PWM sound output to pins 12 (Right) & 13 (Left)
  25 +Load:   dtoverlay=audremap,<param>=<val>
  26 +Params: swap_lr                 Reverse the channel allocation, which will also
  27 +                                swap the audio jack outputs (default off)
  28 +        enable_jack             Don't switch off the audio jack output
  29 +                                (default off)
  30
  31
  32  Name:   bmp085_i2c-sensor
  33 --- a/arch/arm/boot/dts/overlays/audremap-overlay.dts
  34 +++ b/arch/arm/boot/dts/overlays/audremap-overlay.dts
  35 @@ -6,9 +6,14 @@
  36
  37          fragment@0 {
  38                  target = <&audio_pins>;
  39 -                __overlay__ {
  40 +                frag0: __overlay__ {
  41                          brcm,pins = < 12 13 >;
  42                          brcm,function = < 4 >; /* alt0 alt0 */
  43                  };
  44          };
  45 +
  46 +       __overrides__ {
  47 +               swap_lr = <&frag0>, "swap_lr?";
  48 +               enable_jack = <&frag0>, "enable_jack?";
  49 +       };
  50  };