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path: root/drivers/regulator/bd9571mwv-regulator.c
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Diffstat (limited to 'drivers/regulator/bd9571mwv-regulator.c')
-rw-r--r--drivers/regulator/bd9571mwv-regulator.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/regulator/bd9571mwv-regulator.c b/drivers/regulator/bd9571mwv-regulator.c
index 1da36a6590c8..c44613b9423b 100644
--- a/drivers/regulator/bd9571mwv-regulator.c
+++ b/drivers/regulator/bd9571mwv-regulator.c
@@ -185,6 +185,7 @@ static ssize_t backup_mode_store(struct device *dev,
const char *buf, size_t count)
{
struct bd9571mwv_reg *bdreg = dev_get_drvdata(dev);
+ unsigned int mode;
int ret;
if (!count)
@@ -194,6 +195,25 @@ static ssize_t backup_mode_store(struct device *dev,
if (ret)
return ret;
+ if (!bdreg->rstbmode_level)
+ return count;
+
+ /*
+ * Configure DDR Backup Mode, to change the role of the accessory power
+ * switch from a power switch to a wake-up switch, or vice versa
+ */
+ ret = bd9571mwv_bkup_mode_read(bdreg->bd, &mode);
+ if (ret)
+ return ret;
+
+ mode &= ~BD9571MWV_BKUP_MODE_CNT_KEEPON_MASK;
+ if (bdreg->bkup_mode_enabled)
+ mode |= bdreg->bkup_mode_cnt_keepon;
+
+ ret = bd9571mwv_bkup_mode_write(bdreg->bd, mode);
+ if (ret)
+ return ret;
+
return count;
}