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authorJianqun Xu <jay.xu@rock-chips.com>2014-12-24 10:37:00 +0100
committerMark Brown <broonie@kernel.org>2014-12-24 13:42:55 +0100
commit4db9c4a9b27f2b3c7df0d75b16078322447dc87a (patch)
treebacf780726818f99923570284247cb4ba1f69fa3 /sound
parentLinux 3.19-rc1 (diff)
downloadlinux-4db9c4a9b27f2b3c7df0d75b16078322447dc87a.tar.xz
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.h2
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)
/*