UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
David Heidelberg 2020-03-29 18:15:45 +02:00 committed by Sebastian Reichel
parent c32ea07a30
commit fa7cc725a3
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/power/supply/smb347-charger.c
View File

@ -8,6 +8,7 @@
* Mika Westerberg <mika.westerberg@linux.intel.com> * Mika Westerberg <mika.westerberg@linux.intel.com>
*/ */
#include <linux/delay.h>
#include <linux/err.h> #include <linux/err.h>
#include <linux/gpio.h> #include <linux/gpio.h>
#include <linux/kernel.h> #include <linux/kernel.h>
@ -708,6 +709,9 @@ static irqreturn_t smb347_interrupt(int irq, void *data)
bool handled = false; bool handled = false;
int ret; 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); ret = regmap_read(smb->regmap, STAT_C, &stat_c);
if (ret < 0) { if (ret < 0) {
dev_warn(smb->dev, "reading STAT_C failed\n"); dev_warn(smb->dev, "reading STAT_C failed\n");