linux-kernel - [PATCH 2/2] asoc: soc-core: use regmap's parse

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Date:	Wed, 19 Feb 2014 18:44:58 +0800
From:	Nenghua Cao <nhcao@...vell.com>
To:	Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
	Mark Brown <broonie@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-kernel@...r.kernel.org>
CC:	Nenghua Cao <nhcao@...vell.com>
Subject: [PATCH 2/2] asoc: soc-core: use regmap's parse_val to do endian translation

From: Nenghua Cao <nhcao@...vell.com>

    In snd_soc_bytes_put function, it forces cpu to do cpu_to_be translation,
but for mmio bus which uses REGMAP_ENDIAN_NATIVE, it doesn't need to do
endian translation. So it is better to use regmap's api which can decide
if this translation is needed according to bus configuration.

Signed-off-by: Nenghua Cao <nhcao@...vell.com>
---
 sound/soc/soc-core.c |   34 +++++++++++++++++++++++++++++-----
 1 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index fe1df50..fb598cb 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3234,7 +3234,7 @@ int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
 	struct soc_bytes *params = (void *)kcontrol->private_value;
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 	int ret, len;
-	unsigned int val;
+	unsigned int val, mask;
 	void *data;
 
 	if (!codec->using_regmap)
@@ -3264,12 +3264,36 @@ int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
 			((u8 *)data)[0] |= val;
 			break;
 		case 2:
-			((u16 *)data)[0] &= cpu_to_be16(~params->mask);
-			((u16 *)data)[0] |= cpu_to_be16(val);
+			mask = ~params->mask;
+			ret = regmap_parse_val(codec->control_data,
+							&mask, &mask);
+			if (ret != 0)
+				goto out;
+
+			((u16 *)data)[0] &= mask;
+
+			ret = regmap_parse_val(codec->control_data,
+							&val, &val);
+			if (ret != 0)
+				goto out;
+
+			((u16 *)data)[0] |= val;
 			break;
 		case 4:
-			((u32 *)data)[0] &= cpu_to_be32(~params->mask);
-			((u32 *)data)[0] |= cpu_to_be32(val);
+			mask = ~params->mask;
+			ret = regmap_parse_val(codec->control_data,
+							&mask, &mask);
+			if (ret != 0)
+				goto out;
+
+			((u32 *)data)[0] &= mask;
+
+			ret = regmap_parse_val(codec->control_data,
+							&val, &val);
+			if (ret != 0)
+				goto out;
+
+			((u32 *)data)[0] |= val;
 			break;
 		default:
 			ret = -EINVAL;
-- 
1.7.0.4

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