Commit fa7cc725 authored by David Heidelberg's avatar David Heidelberg Committed by Sebastian Reichel
Browse files

power: supply: smb347-charger: Add delay before getting IRQSTAT 



This delay-fix is picked up from downstream driver,
we measured that 25 - 35 ms delay ensure that we get required data.

Tested on SMB347 on Nexus 7 2012. Otherwise IRQSTAT_E fails to provide
correct information.

Signed-off-by: default avatarDmitry Osipenko <digetx@gmail.com>
Signed-off-by: default avatarDavid Heidelberg <david@ixit.cz>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent c32ea07a

drivers/power/supply/smb347-charger.c

+4 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
 *          Mika Westerberg <mika.westerberg@linux.intel.com>

 */



#include <linux/delay.h>

#include <linux/err.h>

#include <linux/gpio.h>

#include <linux/kernel.h>
@@ -708,6 +709,9 @@ static irqreturn_t smb347_interrupt(int irq, void *data) 
	bool handled = false;

	int ret;



	/* SMB347 it needs at least 20ms for setting IRQSTAT_E_*IN_UV_IRQ */

	usleep_range(25000, 35000);



	ret = regmap_read(smb->regmap, STAT_C, &stat_c);

	if (ret < 0) {

		dev_warn(smb->dev, "reading STAT_C failed\n");