linux-kernel - [PATCH 07/22] lp8727_charger: clear interrrupts at inital time

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Message-ID: <A874F61F95741C4A9BA573A70FE3998F41EF1EBA@DQHE02.ent.ti.com>
Date:	Fri, 31 Aug 2012 09:24:09 +0000
From:	"Kim, Milo" <Milo.Kim@...com>
To:	Anton Vorontsov <anton.vorontsov@...aro.org>
CC:	David Woodhouse <dwmw2@...radead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 07/22] lp8727_charger: clear interrrupts at inital time

 To initialize the device, previous interrupts need to be cleared
 while loading the driver.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@...com>
---
 drivers/power/lp8727_charger.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/power/lp8727_charger.c b/drivers/power/lp8727_charger.c
index 134ed5c..b5567bc 100644
--- a/drivers/power/lp8727_charger.c
+++ b/drivers/power/lp8727_charger.c
@@ -17,6 +17,7 @@
 #include <linux/power_supply.h>
 #include <linux/platform_data/lp8727.h>
 
+#define LP8788_NUM_INTREGS	2
 #define DEFAULT_DEBOUNCE_MSEC	270
 
 /* Registers */
@@ -136,6 +137,13 @@ static int lp8727_init_device(struct lp8727_chg *pchg)
 {
 	u8 val;
 	int ret;
+	u8 intstat[LP8788_NUM_INTREGS];
+
+	/* clear interrupts */
+	ret = lp8727_read_bytes(pchg, INT1, intstat, LP8788_NUM_INTREGS);
+	if (ret)
+		return ret;
+
 
 	val = ID200_EN | ADC_EN | CP_EN;
 	ret = lp8727_write_byte(pchg, CTRL1, val);
-- 
1.7.9.5


Best Regards,
Milo


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