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From f8517e7d836269f5fa1e1049394104417d3a7357 Mon Sep 17 00:00:00 2001
From: "B.R. Oake" <broake@openmailbox.org>
Date: Sat, 6 Sep 2014 14:58:50 +0000
Subject: [PATCH] ASoC: sunxi-codec: Fix distortion on 16-bit mono
Patch to remove distortion on 16-bit mono, based on the linux-sunxi-3.4
code.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
sound/soc/sunxi/sunxi-codec.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/sound/soc/sunxi/sunxi-codec.c
+++ b/sound/soc/sunxi/sunxi-codec.c
@@ -215,9 +215,6 @@ static int sunxi_codec_prepare(struct sn
regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION);
}
- /* set TX FIFO MODE - 0 works for both 16 and 24 bits */
- regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_TX_FIFO_MODE, 0x0 << SUNXI_DAC_FIFOC_TX_FIFO_MODE);
-
/* send last sample when DAC FIFO under run */
regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_SEND_LASAT, 0x0 << SUNXI_DAC_FIFOC_SEND_LASAT);
} else {
@@ -329,6 +326,7 @@ static int sunxi_codec_hw_params(struct
regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 7 << SUNXI_DAC_FIFOC_DAC_FS, hwrate << SUNXI_DAC_FIFOC_DAC_FS);
regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_MONO_EN, is_mono << SUNXI_DAC_FIFOC_MONO_EN);
regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS, is_24bit << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS);
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_TX_FIFO_MODE, !is_24bit << SUNXI_DAC_FIFOC_TX_FIFO_MODE);
if (is_24bit)
priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
else
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