linux-kernel - [PATCH 8/8] extcon: gpio: Always check state on resume

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Message-Id: <20170924145622.4031-9-linus.walleij@linaro.org>
Date:   Sun, 24 Sep 2017 16:56:22 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>
Cc:     linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        John Stultz <john.stultz@...aro.org>,
        Mike Lockwood <lockwood@...gle.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 8/8] extcon: gpio: Always check state on resume

It makes most sense to always check the state of the GPIO external
connector at system resume so just do this by default. Add a TODO
if people turn out to desire to parameterize this.

Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/extcon/extcon-gpio.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index b7353f5018b5..4f0ad5ad2722 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -83,6 +83,15 @@ static int gpio_extcon_probe(struct platform_device *pdev)
 	if (!data)
 		return -ENOMEM;
 
+	/*
+	 * Always checking connector state on resume makes most sense so do this
+	 * by default.
+	 *
+	 * TODO: if parameterization is needed, augment this to use proper device
+	 * properties or set it up from PM core.
+	 */
+	data->check_on_resume = true;
+
 	data->gpiod = devm_gpiod_get(dev, "extcon", GPIOD_IN);
 	if (IS_ERR(data->gpiod))
 		return PTR_ERR(data->gpiod);
-- 
2.13.5