usb: phy: Handle per-PHY event for connnect and disconnect events

When usb is connected and enumerated in device mode or when
usb is disconnected, call usb_phy_set_event() from phy drivers
to handle per-PHY event.

[ toddpoynor@google.com : Original patch in Android ]

Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: Android Kernel Team <kernel-team@android.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Benoit Goby <benoit@android.com>
Cc: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Kiran Raparthy <kiran.kumar@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c
index 30c96f08308b..8cd7d193c2ca 100644
--- a/drivers/usb/phy/phy-ab8500-usb.c
+++ b/drivers/usb/phy/phy-ab8500-usb.c
@@ -445,6 +445,7 @@ static int ab9540_usb_link_status_update(struct ab8500_usb *ab,
                         event = UX500_MUSB_NONE;
                 /* Fallback to default B_IDLE as nothing is connected. */
                 ab->phy.otg->state = OTG_STATE_B_IDLE;
+                usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
                 break;
 
         case USB_LINK_ACA_RID_C_NM_9540:
@@ -459,12 +460,14 @@ static int ab9540_usb_link_status_update(struct ab8500_usb *ab,
                         ab8500_usb_peri_phy_en(ab);
                         atomic_notifier_call_chain(&ab->phy.notifier,
                                         UX500_MUSB_PREPARE, &ab->vbus_draw);
+                        usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED);
                 }
                 if (ab->mode == USB_IDLE) {
                         ab->mode = USB_PERIPHERAL;
                         ab8500_usb_peri_phy_en(ab);
                         atomic_notifier_call_chain(&ab->phy.notifier,
                                         UX500_MUSB_PREPARE, &ab->vbus_draw);
+                        usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED);
                 }
                 if (event != UX500_MUSB_RIDC)
                         event = UX500_MUSB_VBUS;
@@ -500,6 +503,7 @@ static int ab9540_usb_link_status_update(struct ab8500_usb *ab,
                 event = UX500_MUSB_CHARGER;
                 atomic_notifier_call_chain(&ab->phy.notifier,
                                 event, &ab->vbus_draw);
+                usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER);
                 break;
 
         case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540:
@@ -524,6 +528,7 @@ static int ab9540_usb_link_status_update(struct ab8500_usb *ab,
                                 ab->mode = USB_IDLE;
                                 ab->phy.otg->default_a = false;
                                 ab->vbus_draw = 0;
+                                usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
                         }
                 }
                 break;
@@ -583,6 +588,7 @@ static int ab8540_usb_link_status_update(struct ab8500_usb *ab,
                  * is connected
                  */
                 ab->phy.otg->state = OTG_STATE_B_IDLE;
+                usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
                 break;
 
         case USB_LINK_ACA_RID_C_NM_8540:
@@ -596,6 +602,7 @@ static int ab8540_usb_link_status_update(struct ab8500_usb *ab,
                         ab8500_usb_peri_phy_en(ab);
                         atomic_notifier_call_chain(&ab->phy.notifier,
                                         UX500_MUSB_PREPARE, &ab->vbus_draw);
+                        usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED);
                 }
                 if (event != UX500_MUSB_RIDC)
                         event = UX500_MUSB_VBUS;
@@ -624,6 +631,7 @@ static int ab8540_usb_link_status_update(struct ab8500_usb *ab,
                 event = UX500_MUSB_CHARGER;
                 atomic_notifier_call_chain(&ab->phy.notifier,
                                 event, &ab->vbus_draw);
+                usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER);
                 break;
 
         case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540:
@@ -646,6 +654,7 @@ static int ab8540_usb_link_status_update(struct ab8500_usb *ab,
                         ab->mode = USB_IDLE;
                         ab->phy.otg->default_a = false;
                         ab->vbus_draw = 0;
+                usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
                 }
                 break;
 
@@ -692,6 +701,7 @@ static int ab8505_usb_link_status_update(struct ab8500_usb *ab,
                  * is connected
                  */
                 ab->phy.otg->state = OTG_STATE_B_IDLE;
+                usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
                 break;
 
         case USB_LINK_ACA_RID_C_NM_8505:
@@ -705,6 +715,7 @@ static int ab8505_usb_link_status_update(struct ab8500_usb *ab,
                         ab8500_usb_peri_phy_en(ab);
                         atomic_notifier_call_chain(&ab->phy.notifier,
                                         UX500_MUSB_PREPARE, &ab->vbus_draw);
+                        usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED);
                 }
                 if (event != UX500_MUSB_RIDC)
                         event = UX500_MUSB_VBUS;
@@ -732,6 +743,7 @@ static int ab8505_usb_link_status_update(struct ab8500_usb *ab,
                 event = UX500_MUSB_CHARGER;
                 atomic_notifier_call_chain(&ab->phy.notifier,
                                 event, &ab->vbus_draw);
+                usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER);
                 break;
 
         default:
@@ -775,6 +787,7 @@ static int ab8500_usb_link_status_update(struct ab8500_usb *ab,
                         event = UX500_MUSB_NONE;
                 /* Fallback to default B_IDLE as nothing is connected */
                 ab->phy.otg->state = OTG_STATE_B_IDLE;
+                usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
                 break;
 
         case USB_LINK_ACA_RID_C_NM_8500:
@@ -792,6 +805,7 @@ static int ab8500_usb_link_status_update(struct ab8500_usb *ab,
                         ab8500_usb_peri_phy_en(ab);
                         atomic_notifier_call_chain(&ab->phy.notifier,
                                         UX500_MUSB_PREPARE, &ab->vbus_draw);
+                        usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED);
                 }
                 if (event != UX500_MUSB_RIDC)
                         event = UX500_MUSB_VBUS;
@@ -818,6 +832,7 @@ static int ab8500_usb_link_status_update(struct ab8500_usb *ab,
                 event = UX500_MUSB_CHARGER;
                 atomic_notifier_call_chain(&ab->phy.notifier,
                                 event, &ab->vbus_draw);
+                usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER);
                 break;
 
         case USB_LINK_RESERVED_8500: