linux-kernel - [PATCH] pda_power: add function callbacks for suspend and resume

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Message-Id: <1271108002-15574-1-git-send-email-daniel@caiaq.de>
Date:	Mon, 12 Apr 2010 23:33:22 +0200
From:	Daniel Mack <daniel@...aq.de>
To:	linux-kernel@...r.kernel.org
Cc:	Daniel Mack <daniel@...aq.de>,
	Dmitry Baryshkov <dbaryshkov@...il.com>,
	Anton Vorontsov <cbou@...l.ru>,
	David Woodhouse <dwmw2@...radead.org>
Subject: [PATCH] pda_power: add function callbacks for suspend and resume

Add function prototypes for power management events so they can be
handled and used by platform implementations.

Signed-off-by: Daniel Mack <daniel@...aq.de>
Cc: Dmitry Baryshkov <dbaryshkov@...il.com>
Cc: Anton Vorontsov <cbou@...l.ru>
Cc: David Woodhouse <dwmw2@...radead.org>
---
 drivers/power/pda_power.c |    9 +++++++++
 include/linux/pda_power.h |    2 ++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
index a232de6..0b27b9d 100644
--- a/drivers/power/pda_power.c
+++ b/drivers/power/pda_power.c
@@ -404,6 +404,12 @@ static int usb_wakeup_enabled;
 
 static int pda_power_suspend(struct platform_device *pdev, pm_message_t state)
 {
+	if (pdata->suspend) {
+		int ret = pdata->suspend(state);
+		if (ret)
+			return ret;
+	}
+
 	if (device_may_wakeup(&pdev->dev)) {
 		if (ac_irq)
 			ac_wakeup_enabled = !enable_irq_wake(ac_irq->start);
@@ -423,6 +429,9 @@ static int pda_power_resume(struct platform_device *pdev)
 			disable_irq_wake(ac_irq->start);
 	}
 
+	if (pdata->resume)
+		return pdata->resume();
+
 	return 0;
 }
 #else
diff --git a/include/linux/pda_power.h b/include/linux/pda_power.h
index d4cf7a2..c9e4d81 100644
--- a/include/linux/pda_power.h
+++ b/include/linux/pda_power.h
@@ -24,6 +24,8 @@ struct pda_power_pdata {
 	int (*is_usb_online)(void);
 	void (*set_charge)(int flags);
 	void (*exit)(struct device *dev);
+	int (*suspend)(pm_message_t state);
+	int (*resume)(void);
 
 	char **supplied_to;
 	size_t num_supplicants;
-- 
1.7.0.3

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