linux-kernel - [PATCH v2 07/15] pinctrl-sx150x: Improve sx150x_init

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Message-Id: <1478537603-23653-8-git-send-email-andrew.smirnov@gmail.com>
Date:   Mon,  7 Nov 2016 08:53:15 -0800
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     linux-gpio@...r.kernel.org
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        linus.walleij@...aro.org, narmstrong@...libre.com,
        linux-kernel@...r.kernel.org, cphealy@...il.com
Subject: [PATCH v2 07/15] pinctrl-sx150x: Improve sx150x_init_misc for SX1504/5/6

For Sx1504/5/6 only SX1506 has RegAdvanced, so put some code in place to
account for that.

Tested-by: Neil Armstrong <narmstrong@...libre.com>
Acked-by: Neil Armstrong <narmstrong@...libre.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
---
 drivers/pinctrl/pinctrl-sx150x.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-sx150x.c b/drivers/pinctrl/pinctrl-sx150x.c
index 27194e7..d51ec73 100644
--- a/drivers/pinctrl/pinctrl-sx150x.c
+++ b/drivers/pinctrl/pinctrl-sx150x.c
@@ -936,6 +936,13 @@ static int sx150x_init_misc(struct sx150x_pinctrl *pctl)
 	case SX150X_456:
 		reg   = pctl->data->pri.x456.reg_advance;
 		value = 0x00;
+
+		/*
+		 * Only SX1506 has RegAdvanced, SX1504/5 are expected
+		 * to initialize this offset to zero
+		 */
+		if (!reg)
+			return 0;
 		break;
 	case SX150X_123:
 		reg   = pctl->data->pri.x123.reg_advance;
-- 
2.5.5