brcm2708: update linux 4.4 patches to latest version

[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.4 / 0548-Audioinjector-Fix-bit-offsets-for-equal-volume-and-a.patch

diff --git a/target/linux/brcm2708/patches-4.4/0548-Audioinjector-Fix-bit-offsets-for-equal-volume-and-a.patch b/target/linux/brcm2708/patches-4.4/0548-Audioinjector-Fix-bit-offsets-for-equal-volume-and-a.patch
new file mode 100644 (file)
index 0000000..ed2a5d6
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0548-Audioinjector-Fix-bit-offsets-for-equal-volume-and-a.patch
@@ -0,0 +1,55 @@
+From 80531f433182a0db5da749045a6e3f48bf4277db Mon Sep 17 00:00:00 2001
+From: Matt Flax <flatmax@flatmax.org>
+Date: Sun, 20 Nov 2016 19:15:24 +1100
+Subject: [PATCH] [Audioinjector] Fix bit offsets for equal volume and add 8
+ kHz operation (#1727)
+
+Applying to the audioinjector sound card only. This patch offsets channel
+2 correctly from the LR clock. This ensures that channel 2 doesn't loose
+any bits during capture. It also results in both channels 1 and 2 having
+the same volume. This commit also adds 8 kHz operation.
+
+Signed-off-by: Matt Flax <flatmax@flatmax.org>
+---
+ sound/soc/bcm/audioinjector-pi-soundcard.c | 16 +++++++++-------
+ 1 file changed, 9 insertions(+), 7 deletions(-)
+
+--- a/sound/soc/bcm/audioinjector-pi-soundcard.c
++++ b/sound/soc/bcm/audioinjector-pi-soundcard.c
+@@ -30,7 +30,7 @@
+ #include "../codecs/wm8731.h"
+ 
+ static const unsigned int bcm2835_rates_12000000[] = {
+-      32000, 44100, 48000, 96000, 88200,
++      8000, 16000, 32000, 44100, 48000, 96000, 88200,
+ };
+ 
+ static struct snd_pcm_hw_constraint_list bcm2835_constraints_12000000 = {
+@@ -55,19 +55,21 @@ static int snd_audioinjector_pi_soundcar
+ 
+       switch (params_rate(params)){
+               case 8000:
+-                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 1508);
++                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 1);
++              case 16000:
++                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 750);
+               case 32000:
+-                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 378);
++                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 375);
+               case 44100:
+-                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 274);
++                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 272);
+               case 48000:
+-                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 252);
++                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 250);
+               case 88200:
+                       return snd_soc_dai_set_bclk_ratio(cpu_dai, 136);
+               case 96000:
+-                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 126);
++                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 125);
+               default:
+-                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 126);
++                      return snd_soc_dai_set_bclk_ratio(cpu_dai, 125);
+       }
+ }
+