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phy: rockchip-inno-usb2: add wake_lock function

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Prevent the system from entering suspend when usb cable is connecetd.

Change-Id: I50c4a09d9142ebeb2d4e2a0ab2df59f98ef99737
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
This commit is contained in:
Frank Wang 2019-03-07 14:40:40 +08:00 committed by Tao Huang
parent 153538b270
commit 9f2fb93354
1 changed files with 7 additions and 0 deletions
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7
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
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@ -36,6 +36,7 @@
#include <linux/mfd/syscon.h>
#include <linux/usb/of.h>
#include <linux/usb/otg.h>
#include <linux/wakelock.h>
#define BIT_WRITEABLE_SHIFT 16
#define SCHEDULE_DELAY (60 * HZ)
@ -255,6 +256,7 @@ struct rockchip_usb2phy_port {
struct regulator *vbus;
const struct rockchip_usb2phy_port_cfg *port_cfg;
struct notifier_block event_nb;
struct wake_lock wakelock;
enum usb_otg_state state;
enum usb_dr_mode mode;
};
@ -1022,6 +1024,7 @@ static void rockchip_usb2phy_otg_sm_work(struct work_struct *work)
switch (rphy->chg_type) {
case POWER_SUPPLY_TYPE_USB:
dev_dbg(&rport->phy->dev, "sdp cable is connected\n");
wake_lock(&rport->wakelock);
cable = EXTCON_CHG_USB_SDP;
mutex_unlock(&rport->mutex);
rockchip_usb2phy_power_on(rport->phy);
@ -1037,6 +1040,7 @@ static void rockchip_usb2phy_otg_sm_work(struct work_struct *work)
break;
case POWER_SUPPLY_TYPE_USB_CDP:
dev_dbg(&rport->phy->dev, "cdp cable is connected\n");
wake_lock(&rport->wakelock);
cable = EXTCON_CHG_USB_CDP;
mutex_unlock(&rport->mutex);
rockchip_usb2phy_power_on(rport->phy);
@ -1072,6 +1076,7 @@ static void rockchip_usb2phy_otg_sm_work(struct work_struct *work)
rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN;
rport->perip_connected = false;
sch_work = false;
wake_unlock(&rport->wakelock);
} else if (!rport->vbus_attached) {
dev_dbg(&rport->phy->dev, "usb disconnect\n");
rport->state = OTG_STATE_B_IDLE;
@ -1079,6 +1084,7 @@ static void rockchip_usb2phy_otg_sm_work(struct work_struct *work)
rphy->chg_state = USB_CHG_STATE_UNDEFINED;
rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN;
delay = OTG_SCHEDULE_DELAY;
wake_unlock(&rport->wakelock);
}
break;
case OTG_STATE_A_HOST:
@ -1614,6 +1620,7 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy,
if (rport->vbus_always_on)
goto out;
wake_lock_init(&rport->wakelock, WAKE_LOCK_SUSPEND, "rockchip_otg");
INIT_DELAYED_WORK(&rport->bypass_uart_work,
rockchip_usb_bypass_uart_work);
INIT_DELAYED_WORK(&rport->chg_work, rockchip_chg_detect_work);