diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0548-Audioinjector-Fix-bit-offsets-for-equal-volume-and-a.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0548-Audioinjector-Fix-bit-offsets-for-equal-volume-and-a.patch | 55 |
1 files changed, 55 insertions, 0 deletions
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 index 0000000000..ed2a5d6619 --- /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); + } + } + |