releases/3.1.1/asoc-remove-direct-register-cache-accesses-from-wm8962.patch

From 38f3f31a0a797bdbcc0cdb12553bbecc2f9a91c4 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Fri, 23 Sep 2011 21:26:33 +0100
Subject: ASoC: Remove direct register cache accesses from WM8962 driver

From: Mark Brown <broonie@opensource.wolfsonmicro.com>

commit 38f3f31a0a797bdbcc0cdb12553bbecc2f9a91c4 upstream.

Also fix return values for speaker switch updates.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 sound/soc/codecs/wm8962.c |   21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -2021,7 +2021,6 @@ static int wm8962_put_spk_sw(struct snd_
 			    struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
-	u16 *reg_cache = codec->reg_cache;
 	int ret;
 
 	/* Apply the update (if any) */
@@ -2030,16 +2029,19 @@ static int wm8962_put_spk_sw(struct snd_
 		return 0;
 
 	/* If the left PGA is enabled hit that VU bit... */
-	if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_SPKOUTL_PGA_ENA)
-		return snd_soc_write(codec, WM8962_SPKOUTL_VOLUME,
-				     reg_cache[WM8962_SPKOUTL_VOLUME]);
+	ret = snd_soc_read(codec, WM8962_PWR_MGMT_2);
+	if (ret & WM8962_SPKOUTL_PGA_ENA) {
+		snd_soc_write(codec, WM8962_SPKOUTL_VOLUME,
+			      snd_soc_read(codec, WM8962_SPKOUTL_VOLUME));
+		return 1;
+	}
 
 	/* ...otherwise the right.  The VU is stereo. */
-	if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_SPKOUTR_PGA_ENA)
-		return snd_soc_write(codec, WM8962_SPKOUTR_VOLUME,
-				     reg_cache[WM8962_SPKOUTR_VOLUME]);
+	if (ret & WM8962_SPKOUTR_PGA_ENA)
+		snd_soc_write(codec, WM8962_SPKOUTR_VOLUME,
+			      snd_soc_read(codec, WM8962_SPKOUTR_VOLUME));
 
-	return 0;
+	return 1;
 }
 
 static const char *cap_hpf_mode_text[] = {
@@ -2365,7 +2367,6 @@ static int out_pga_event(struct snd_soc_
 			 struct snd_kcontrol *kcontrol, int event)
 {
 	struct snd_soc_codec *codec = w->codec;
-	u16 *reg_cache = codec->reg_cache;
 	int reg;
 
 	switch (w->shift) {
@@ -2388,7 +2389,7 @@ static int out_pga_event(struct snd_soc_
 
 	switch (event) {
 	case SND_SOC_DAPM_POST_PMU:
-		return snd_soc_write(codec, reg, reg_cache[reg]);
+		return snd_soc_write(codec, reg, snd_soc_read(codec, reg));
 	default:
 		BUG();
 		return -EINVAL;