linux-kernel - [PATCH] power: max8925 - Enable power change notifications

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Message-ID: <03653C9B-09A4-40D0-B63F-ABDDDC0124D9@marvell.com>
Date:	Mon, 29 Aug 2011 09:32:04 -0700
From:	Philip Rakity <prakity@...vell.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	"cbou@...l.ru" <cbou@...l.ru>,
	David Woodhouse <dwmw2@...radead.org>,
	Anton Vorontsov <cbouatmailru@...il.com>
Subject: [PATCH] power: max8925 - Enable power change notifications


The power core infrastructure allow external power change
events to be passed to drivers what are listed in the
supplied_to call back field.  Enable this feature by
allowing the supplied_to field to be passed to the driver.

This feature will enable drivers named in the supplied_to field that have a
external_power_changed callback to be notified when power
was been turned on or off.

Signed-off-by: Philip Rakity <prakity@...vell.com>
---
 drivers/power/max8925_power.c |    5 +++++
 include/linux/mfd/max8925.h   |    2 ++
 2 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c
index fd32c08..29b5d2c 100644
--- a/drivers/power/max8925_power.c
+++ b/drivers/power/max8925_power.c
@@ -455,6 +455,8 @@ static __devinit int max8925_power_probe(struct platform_device *pdev)
 	info->ac.properties = max8925_ac_props;
 	info->ac.num_properties = ARRAY_SIZE(max8925_ac_props);
 	info->ac.get_property = max8925_ac_get_prop;
+	info->ac.supplied_to = pdata->supplied_to;
+	info->ac.num_supplicants = pdata->num_supplicants;
 	ret = power_supply_register(&pdev->dev, &info->ac);
 	if (ret)
 		goto out;
@@ -465,6 +467,9 @@ static __devinit int max8925_power_probe(struct platform_device *pdev)
 	info->usb.properties = max8925_usb_props;
 	info->usb.num_properties = ARRAY_SIZE(max8925_usb_props);
 	info->usb.get_property = max8925_usb_get_prop;
+	info->usb.supplied_to = pdata->supplied_to;
+	info->usb.num_supplicants = pdata->num_supplicants;
+
 	ret = power_supply_register(&pdev->dev, &info->usb);
 	if (ret)
 		goto out_usb;
diff --git a/include/linux/mfd/max8925.h b/include/linux/mfd/max8925.h
index e742e04..008f807 100644
--- a/include/linux/mfd/max8925.h
+++ b/include/linux/mfd/max8925.h
@@ -225,6 +225,8 @@ struct max8925_power_pdata {
 	unsigned	fast_charge:3;	/* charge current */
 	unsigned	no_temp_support:1; /* set if no temperature detect */
 	unsigned	no_insert_detect:1; /* set if no ac insert detect */
+	char		**supplied_to;
+	int		num_supplicants;
 };
 
 /*
-- 
1.7.6


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