linux-kernel - [PATCH 2/2] ASoC: Codec: wm8962: declare ALC Coefficients as 4 separate registers

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Message-ID: <1444115215-4388-3-git-send-email-jiada_wang@mentor.com>
Date:	Tue, 6 Oct 2015 16:06:55 +0900
From:	Jiada Wang <jiada_wang@...tor.com>
To:	<lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
	<tiwai@...e.com>, <patches@...nsource.wolfsonmicro.com>,
	<alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
CC:	<jiada_wang@...tor.com>
Subject: [PATCH 2/2] ASoC: Codec: wm8962: declare ALC Coefficients as 4 separate registers

As ALC2 register is volatile, declare it as one of ALC Coefficients
register together with other non-volatile registers will cause issue,
in case wm8962 has enter suspend mode, and cache_only flag is set,
any attempt to read from ALC2 will fail.

Instead of declaring one ALC Coefficients register which contains
ALC1 ~ ALC3 and Noise Gate, this patch declares 4 separate registers,
so that regmap can handle these registers differently based on their
classification.

Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
---
 sound/soc/codecs/wm8962.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 319ee38..1201efd 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -1782,8 +1782,11 @@ SND_SOC_BYTES("HD Bass Coefficients", WM8962_HDBASS_AI_1, 30),
 
 SOC_DOUBLE("ALC Switch", WM8962_ALC1, WM8962_ALCL_ENA_SHIFT,
 		WM8962_ALCR_ENA_SHIFT, 1, 0),
-SND_SOC_BYTES_MASK("ALC Coefficients", WM8962_ALC1, 4,
+SND_SOC_BYTES_MASK("ALC1", WM8962_ALC1, 1,
 		WM8962_ALCL_ENA_MASK | WM8962_ALCR_ENA_MASK),
+SND_SOC_BYTES("ALC2", WM8962_ALC2, 1),
+SND_SOC_BYTES("ALC3", WM8962_ALC3, 1),
+SND_SOC_BYTES("Noise Gate", WM8962_NOISE_GATE, 1),
 };
 
 static const struct snd_kcontrol_new wm8962_spk_mono_controls[] = {
-- 
2.4.5

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