From: Jianqun Xu <jay.xu@rock-chips.com>
Date: Wed, 24 Dec 2014 09:37:00 +0000 (+0800)
Subject: ASoC: rockchip: i2s: fix error defination of transmit data level
X-Git-Tag: fixes-v4.0-rc1~347^2~1^2^4~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4db9c4a9b27f2b3c7df0d75b16078322447dc87a;p=pandora-kernel.git

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>
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