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| author | Jianqun Xu <jay.xu@rock-chips.com> | 2014-12-24 17:37:00 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-12-24 12:42:55 +0000 |
| commit | 4db9c4a9b27f2b3c7df0d75b16078322447dc87a (patch) | |
| tree | bacf780726818f99923570284247cb4ba1f69fa3 /sound | |
| parent | 97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff) | |
| download | linux-4db9c4a9b27f2b3c7df0d75b16078322447dc87a.tar.gz linux-4db9c4a9b27f2b3c7df0d75b16078322447dc87a.tar.bz2 linux-4db9c4a9b27f2b3c7df0d75b16078322447dc87a.zip | |
ASoC: rockchip: i2s: fix error defination of transmit data level
According to description about "Transmit Data Level",
This bit field controls the level at which a DMA request
is made by the transmit logic.
It is equal to the watermark level.
That is, the dma_tx_req signal is generated when the number
of valid data entries in the TXFIFO
(TXFIFO0 if CSR=00
TXFIFO1 if CSR=01
TXFIFO2 if CSR=10
TXFIFO3 if CSR=11)
is equal to or below this field value.
Different to receive data level, transmit data level does not need
to "-1".
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/rockchip/rockchip_i2s.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/rockchip/rockchip_i2s.h b/sound/soc/rockchip/rockchip_i2s.h index 89a5d8bc6ee7..93f456f518a9 100644 --- a/sound/soc/rockchip/rockchip_i2s.h +++ b/sound/soc/rockchip/rockchip_i2s.h @@ -127,7 +127,7 @@ #define I2S_DMACR_TDE_DISABLE (0 << I2S_DMACR_TDE_SHIFT) #define I2S_DMACR_TDE_ENABLE (1 << I2S_DMACR_TDE_SHIFT) #define I2S_DMACR_TDL_SHIFT 0 -#define I2S_DMACR_TDL(x) ((x - 1) << I2S_DMACR_TDL_SHIFT) +#define I2S_DMACR_TDL(x) ((x) << I2S_DMACR_TDL_SHIFT) #define I2S_DMACR_TDL_MASK (0x1f << I2S_DMACR_TDL_SHIFT) /* |