From b44aa40f875b06b1986a18251d601ee1832c4476 Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Mon, 27 Jan 2014 13:03:05 +0100 Subject: ASoC: tlv320aic32x4: Fix mono playback Playback of a mono stream should output the same stream on both channels. At the moment only the left analog signal is valid, the right one is just noise. This patch maps the left digital channel onto both DACs when receiving a mono stream. Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown --- sound/soc/codecs/tlv320aic32x4.c | 18 +++++++++++------- sound/soc/codecs/tlv320aic32x4.h | 1 + 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index 385dec1..ee9ad05 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -450,6 +450,17 @@ static int aic32x4_hw_params(struct snd_pcm_substream *substream, } snd_soc_write(codec, AIC32X4_IFACE1, data); + if (params_channels(params) == 1) { + data = AIC32X4_RDAC2LCHN | AIC32X4_LDAC2LCHN; + } else { + if (aic32x4->swapdacs) + data = AIC32X4_RDAC2LCHN | AIC32X4_LDAC2RCHN; + else + data = AIC32X4_LDAC2LCHN | AIC32X4_RDAC2RCHN; + } + snd_soc_update_bits(codec, AIC32X4_DACSETUP, AIC32X4_DAC_CHAN_MASK, + data); + return 0; } @@ -606,13 +617,6 @@ static int aic32x4_probe(struct snd_soc_codec *codec) } snd_soc_write(codec, AIC32X4_CMMODE, tmp_reg); - /* Do DACs need to be swapped? */ - if (aic32x4->swapdacs) { - snd_soc_write(codec, AIC32X4_DACSETUP, AIC32X4_LDAC2RCHN | AIC32X4_RDAC2LCHN); - } else { - snd_soc_write(codec, AIC32X4_DACSETUP, AIC32X4_LDAC2LCHN | AIC32X4_RDAC2RCHN); - } - /* Mic PGA routing */ if (aic32x4->micpga_routing & AIC32X4_MICPGA_ROUTE_LMIC_IN2R_10K) { snd_soc_write(codec, AIC32X4_LMICPGANIN, AIC32X4_LMICPGANIN_IN2R_10K); diff --git a/sound/soc/codecs/tlv320aic32x4.h b/sound/soc/codecs/tlv320aic32x4.h index 3577422..83795af 100644 --- a/sound/soc/codecs/tlv320aic32x4.h +++ b/sound/soc/codecs/tlv320aic32x4.h @@ -138,6 +138,7 @@ #define AIC32X4_LDAC2RCHN (0x02 << 4) #define AIC32X4_LDAC2LCHN (0x01 << 4) #define AIC32X4_RDAC2RCHN (0x01 << 2) +#define AIC32X4_DAC_CHAN_MASK 0x3c #define AIC32X4_SSTEP2WCLK 0x01 #define AIC32X4_MUTEON 0x0C -- cgit v1.1