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Subject[PATCH v2 2/3] usb: phy: Handle per-PHY event for connect and disconnect events
Date
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.

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>
[Original patch in Android from Todd]
Cc: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Kiran Raparthy <kiran.kumar@linaro.org>
---
drivers/usb/phy/phy-ab8500-usb.c | 15 +++++++++++++++
drivers/usb/phy/phy-gpio-vbus-usb.c | 2 ++
drivers/usb/phy/phy-mv-usb.c | 2 ++
drivers/usb/phy/phy-tahvo.c | 2 ++
4 files changed, 21 insertions(+)

diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c
index 30c96f0..8cd7d19 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:
diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c
index 9fcf19b..5451172 100644
--- a/drivers/usb/phy/phy-gpio-vbus-usb.c
+++ b/drivers/usb/phy/phy-gpio-vbus-usb.c
@@ -134,6 +134,7 @@ static void gpio_vbus_work(struct work_struct *work)

atomic_notifier_call_chain(&gpio_vbus->phy.notifier,
status, gpio_vbus->phy.otg->gadget);
+ usb_phy_set_event(&gpio_vbus->phy, USB_EVENT_ENUMERATED);
} else {
/* optionally disable D+ pullup */
if (gpio_is_valid(gpio))
@@ -148,6 +149,7 @@ static void gpio_vbus_work(struct work_struct *work)

atomic_notifier_call_chain(&gpio_vbus->phy.notifier,
status, gpio_vbus->phy.otg->gadget);
+ usb_phy_set_event(&gpio_vbus->phy, USB_EVENT_NONE);
}
}

diff --git a/drivers/usb/phy/phy-mv-usb.c b/drivers/usb/phy/phy-mv-usb.c
index 81d934f..b234d46 100644
--- a/drivers/usb/phy/phy-mv-usb.c
+++ b/drivers/usb/phy/phy-mv-usb.c
@@ -441,10 +441,12 @@ run:
mv_otg_start_periphrals(mvotg, 0);
mv_otg_reset(mvotg);
mv_otg_disable(mvotg);
+ usb_phy_set_event(&mvotg->phy, USB_EVENT_NONE);
break;
case OTG_STATE_B_PERIPHERAL:
mv_otg_enable(mvotg);
mv_otg_start_periphrals(mvotg, 1);
+ usb_phy_set_event(&mvotg->phy, USB_EVENT_ENUMERATED);
break;
case OTG_STATE_A_IDLE:
otg->default_a = 1;
diff --git a/drivers/usb/phy/phy-tahvo.c b/drivers/usb/phy/phy-tahvo.c
index 9cabc1a..d391c79 100644
--- a/drivers/usb/phy/phy-tahvo.c
+++ b/drivers/usb/phy/phy-tahvo.c
@@ -87,6 +87,7 @@ static void check_vbus_state(struct tahvo_usb *tu)
if (tu->phy.otg->gadget)
usb_gadget_vbus_connect(tu->phy.otg->gadget);
tu->phy.otg->state = OTG_STATE_B_PERIPHERAL;
+ usb_phy_set_event(&tu->phy, USB_EVENT_ENUMERATED);
break;
case OTG_STATE_A_IDLE:
/*
@@ -105,6 +106,7 @@ static void check_vbus_state(struct tahvo_usb *tu)
if (tu->phy.otg->gadget)
usb_gadget_vbus_disconnect(tu->phy.otg->gadget);
tu->phy.otg->state = OTG_STATE_B_IDLE;
+ usb_phy_set_event(&tu->phy, USB_EVENT_NONE);
break;
case OTG_STATE_A_HOST:
tu->phy.otg->state = OTG_STATE_A_IDLE;
--
1.9.1


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