[PATCH RESEND] ASoC: wm8962: Do not access WM8962_GPIO_BASE

[Fabio Estevam]

According to the WM8962 datasheet, there is no register at address 0x200.

WM8962_GPIO_BASE is just a base address for the GPIO registers and not a
real register, so remove it from wm8962_readable_register().

Also, Register 515 (WM8962_GPIO_BASE + 3) does not exist, so skip
its access.

This fixes the following errors:

wm8962 0-001a: ASoC: error at soc_component_read_no_lock on wm8962.0-001a: -16
wm8962 0-001a: ASoC: error at soc_component_read_no_lock on wm8962.0-001a: -16

Signed-off-by: Fabio Estevam <festevam at gmail.com>
Acked-by: Charles Keepax <ckeepax at opensource.cirrus.com>
---
 sound/soc/codecs/wm8962.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index df8cdc71357d..8159a3866cde 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -956,7 +956,6 @@ static bool wm8962_readable_register(struct device *dev, unsigned int reg)
 	case WM8962_EQ39:
 	case WM8962_EQ40:
 	case WM8962_EQ41:
-	case WM8962_GPIO_BASE:
 	case WM8962_GPIO_2:
 	case WM8962_GPIO_3:
 	case WM8962_GPIO_5:
@@ -3437,7 +3436,13 @@ static int wm8962_probe(struct snd_soc_component *component)
 	/* Save boards having to disable DMIC when not in use */
 	dmicclk = false;
 	dmicdat = false;
-	for (i = 0; i < WM8962_MAX_GPIO; i++) {
+	for (i = 1; i < WM8962_MAX_GPIO; i++) {
+		/*
+		 * Register 515 (WM8962_GPIO_BASE + 3) does not exist,
+		 * so skip its access
+		 */
+		if (i == 3)
+			continue;
 		switch (snd_soc_component_read(component, WM8962_GPIO_BASE + i)
 			& WM8962_GP2_FN_MASK) {
 		case WM8962_GPIO_FN_DMICCLK:
-- 
2.17.1