linux-kernel - [PATCH 01/11] pinctrl: single: adopt pinctrl sleep mode management

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Date:	Fri, 31 May 2013 15:43:01 +0530
From:	Hebbar Gururaja <gururaja.hebbar@...com>
To:	<khilman@...aro.org>, <grant.likely@...aro.org>,
	<linus.walleij@...aro.org>, <rob.herring@...xeda.com>
CC:	<davinci-linux-open-source@...ux.davincidsp.com>,
	<devicetree-discuss@...ts.ozlabs.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux@....linux.org.uk>,
	<linux-kernel@...r.kernel.org>, <vaibhav.bedia@...com>,
	<sudhakar.raj@...com>, <gururaja.hebbar@...com>
Subject: [PATCH 01/11] pinctrl: single: adopt pinctrl sleep mode management

Make pinctrl-single able to handle suspend/resume events and change
hogged pins states accordingly.

Signed-off-by: Hebbar Gururaja <gururaja.hebbar@...com>
Cc: Linus Walleij <linus.walleij@...aro.org>
---
:100644 100644 b9fa046... bfd4f6a... M	drivers/pinctrl/pinctrl-single.c
 drivers/pinctrl/pinctrl-single.c |   27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index b9fa046..bfd4f6a 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -1346,6 +1346,29 @@ static int pcs_add_gpio_func(struct device_node *node, struct pcs_device *pcs)
 	return ret;
 }
 
+static int pinctrl_single_suspend(struct platform_device *pdev,
+					pm_message_t state)
+{
+	struct pcs_device *pcs;
+
+	pcs = platform_get_drvdata(pdev);
+	if (!pcs)
+		return -EINVAL;
+
+	return pinctrl_force_sleep(pcs->pctl);
+}
+
+static int pinctrl_single_resume(struct platform_device *pdev)
+{
+	struct pcs_device *pcs;
+
+	pcs = platform_get_drvdata(pdev);
+	if (!pcs)
+		return -EINVAL;
+
+	return pinctrl_force_default(pcs->pctl);
+}
+
 static int pcs_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
@@ -1494,6 +1517,10 @@ static struct platform_driver pcs_driver = {
 		.name		= DRIVER_NAME,
 		.of_match_table	= pcs_of_match,
 	},
+#ifdef CONFIG_PM
+	.suspend = pinctrl_single_suspend,
+	.resume = pinctrl_single_resume,
+#endif
 };
 
 module_platform_driver(pcs_driver);
-- 
1.7.9.5

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