This patch adds HNP polling operation function for OTG fsm.
Signed-off-by: Li Jun <b47624@xxxxxxxxxxxxx>
---
drivers/usb/phy/phy-fsm-usb.c | 2 ++
include/linux/usb/otg-fsm.h | 9 +++++++++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c
index c47e5a6..ef91961 100644
--- a/drivers/usb/phy/phy-fsm-usb.c
+++ b/drivers/usb/phy/phy-fsm-usb.c
@@ -169,6 +169,7 @@ static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
otg_set_protocol(fsm, PROTO_HOST);
usb_bus_start_enum(fsm->otg->host,
fsm->otg->host->otg_port);
+ otg_start_hnp_polling(fsm);
break;
case OTG_STATE_A_IDLE:
otg_drv_vbus(fsm, 0);
@@ -203,6 +204,7 @@ static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
*/
if (!fsm->a_bus_req || fsm->a_suspend_req_inf)
otg_add_timer(fsm, A_WAIT_ENUM);
+ otg_start_hnp_polling(fsm);
break;
case OTG_STATE_A_SUSPEND:
otg_drv_vbus(fsm, 1);
diff --git a/include/linux/usb/otg-fsm.h b/include/linux/usb/otg-fsm.h
index b6ba1bf..79c6ee8 100644
--- a/include/linux/usb/otg-fsm.h
+++ b/include/linux/usb/otg-fsm.h
@@ -127,6 +127,7 @@ struct otg_fsm_ops {
void (*start_pulse)(struct otg_fsm *fsm);
void (*start_adp_prb)(struct otg_fsm *fsm);
void (*start_adp_sns)(struct otg_fsm *fsm);
+ void (*start_hnp_polling)(struct otg_fsm *fsm);
void (*add_timer)(struct otg_fsm *fsm, enum otg_fsm_timer timer);
void (*del_timer)(struct otg_fsm *fsm, enum otg_fsm_timer timer);
int (*start_host)(struct otg_fsm *fsm, int on);
@@ -209,6 +210,14 @@ static inline int otg_start_adp_sns(struct otg_fsm *fsm)
return 0;
}
+static inline int otg_start_hnp_polling(struct otg_fsm *fsm)
+{
+ if (!fsm->ops->start_hnp_polling)
+ return -EOPNOTSUPP;
+ fsm->ops->start_hnp_polling(fsm);
+ return 0;
+}
+
static inline int otg_add_timer(struct otg_fsm *fsm, enum otg_fsm_timer timer)
{
if (!fsm->ops->add_timer)
--
1.7.8
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