mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
56 lines
2.0 KiB
Diff
56 lines
2.0 KiB
Diff
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);
|
|
}
|
|
}
|
|
|