Commit 4db9c4a9 authored Dec 24, 2014 by Jianqun Xu Committed by Mark Brown Dec 24, 2014

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>

parent 97bf6af1

sound/soc/rockchip/rockchip_i2s.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)

		/*