From: Jianqun <jay.xu@rock-chips.com>
Date: Sat, 13 Sep 2014 00:42:12 +0000 (+0800)
Subject: ASoC: rockchip-i2s: fix registers' property of rockchip i2s controller
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2f1e93f81cebfa99b668f27cdb14992ff23480a4;p=linux-beck.git

ASoC: rockchip-i2s: fix registers' property of rockchip i2s controller

Reference rockchip I2S controller TRM, modify some registers' property
I2S_FIFOLR: read / write, but not volatile, not precious
I2S_INTSR: read / write
I2S_CLR: volatile, register value will be cleared by read

Test on RK3288 with max98090.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 870a6645c782..fb9e05c9f471 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -362,6 +362,8 @@ static bool rockchip_i2s_rd_reg(struct device *dev, unsigned int reg)
 	case I2S_XFER:
 	case I2S_CLR:
 	case I2S_RXDR:
+	case I2S_FIFOLR:
+	case I2S_INTSR:
 		return true;
 	default:
 		return false;
@@ -371,8 +373,8 @@ static bool rockchip_i2s_rd_reg(struct device *dev, unsigned int reg)
 static bool rockchip_i2s_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
-	case I2S_FIFOLR:
 	case I2S_INTSR:
+	case I2S_CLR:
 		return true;
 	default:
 		return false;
@@ -382,8 +384,6 @@ static bool rockchip_i2s_volatile_reg(struct device *dev, unsigned int reg)
 static bool rockchip_i2s_precious_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
-	case I2S_FIFOLR:
-		return true;
 	default:
 		return false;
 	}