From: Ferry Toth <ftoth@xxxxxxxxxxxxxx>
commit ecb5bdff901139850fb3ca3ae2d0cccac045bc52 upstream.
extcon driver for Basin Cove PMIC shadows the switch status used for dwc3
DRD to detect a change in the switch position. This change initializes the
status at probe time.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 492929c54791 ("extcon: mrfld: Introduce extcon driver for Basin Cove PMIC")
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Ferry Toth <ftoth@xxxxxxxxxxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/extcon/extcon-intel-mrfld.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/extcon/extcon-intel-mrfld.c
+++ b/drivers/extcon/extcon-intel-mrfld.c
@@ -197,6 +197,7 @@ static int mrfld_extcon_probe(struct pla
struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent);
struct regmap *regmap = pmic->regmap;
struct mrfld_extcon_data *data;
+ unsigned int status;
unsigned int id;
int irq, ret;
@@ -244,6 +245,14 @@ static int mrfld_extcon_probe(struct pla
/* Get initial state */
mrfld_extcon_role_detect(data);
+ /*
+ * Cached status value is used for cable detection, see comments
+ * in mrfld_extcon_cable_detect(), we need to sync cached value
+ * with a real state of the hardware.
+ */
+ regmap_read(regmap, BCOVE_SCHGRIRQ1, &status);
+ data->status = status;
+
mrfld_extcon_clear(data, BCOVE_MIRQLVL1, BCOVE_LVL1_CHGR);
mrfld_extcon_clear(data, BCOVE_MCHGRIRQ1, BCOVE_CHGRIRQ_ALL);
