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Merge "dwc3: Add usb_get_remote_wakeup_status() API()"

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This commit is contained in:
qctecmdr 2020-12-19 19:39:59 -08:00 • committed by Gerrit - the friendly Code Review server
commit aeed5e92e5
5 changed files with 35 additions and 0 deletions
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2
drivers/usb/dwc3/core.h
View file

@ -1150,6 +1150,7 @@ struct dwc3_scratchpad_array {
* @bh_handled_evt_cnt: no. of events handled by tasklet per interrupt
* @bh_dbg_index: index for capturing bh_completion_time and bh_handled_evt_cnt
* @last_run_stop: timestamp denoting the last run_stop update
* @is_remote_wakeup_enabled: remote wakeup status from host perspective
*/
struct dwc3 {
struct work_struct drd_work;
@ -1395,6 +1396,7 @@ struct dwc3 {
u32 gen2_tx_de_emph2;
u32 gen2_tx_de_emph3;
ktime_t last_run_stop;
bool is_remote_wakeup_enabled;
};
#define INCRX_BURST_MODE 0

15
drivers/usb/dwc3/dwc3-msm.c
View file

@ -1838,6 +1838,21 @@ int usb_gsi_ep_op(struct usb_ep *ep, void *op_data, enum gsi_ep_op op)
}
EXPORT_SYMBOL(usb_gsi_ep_op);
/* Return true if host is supporting remote wakeup functionality. */
bool usb_get_remote_wakeup_status(struct usb_gadget *gadget)
{
struct dwc3 *dwc = gadget_to_dwc(gadget);
unsigned long flags;
bool rw = false;
spin_lock_irqsave(&dwc->lock, flags);
rw = dwc->is_remote_wakeup_enabled ? true : false;
spin_unlock_irqrestore(&dwc->lock, flags);
return rw;
}
EXPORT_SYMBOL(usb_get_remote_wakeup_status);
/**
* Configure a USB DBM ep to work in BAM mode.
*

6
drivers/usb/dwc3/ep0.c
View file

@ -340,6 +340,9 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc,
usb_status |= 1 << USB_DEV_STAT_U1_ENABLED;
if (reg & DWC3_DCTL_INITU2ENA)
usb_status |= 1 << USB_DEV_STAT_U2_ENABLED;
} else {
usb_status |= dwc->is_remote_wakeup_enabled <<
USB_DEVICE_REMOTE_WAKEUP;
}
break;
@ -460,6 +463,9 @@ static int dwc3_ep0_handle_device(struct dwc3 *dwc,
switch (wValue) {
case USB_DEVICE_REMOTE_WAKEUP:
dbg_log_string("remote wakeup :%s",
(set ? "enabled" : "disabled"));
dwc->is_remote_wakeup_enabled = set;
break;
/*
* 9.4.1 says only only for SS, in AddressState only for

9
drivers/usb/dwc3/gadget.c
View file

@ -1993,6 +1993,12 @@ static int dwc3_gadget_wakeup(struct usb_gadget *g)
int ret;
spin_lock_irqsave(&dwc->lock, flags);
if (!dwc->is_remote_wakeup_enabled) {
spin_unlock_irqrestore(&dwc->lock, flags);
dbg_log_string("remote wakeup not supported\n");
return -EINVAL;
}
ret = __dwc3_gadget_wakeup(dwc);
spin_unlock_irqrestore(&dwc->lock, flags);
@ -2508,6 +2514,7 @@ static int dwc3_gadget_start(struct usb_gadget *g,
}
dwc->gadget_driver = driver;
dwc->is_remote_wakeup_enabled = false;
/*
* For DRD, this might get called by gadget driver during bootup
@ -2539,6 +2546,7 @@ static int dwc3_gadget_stop(struct usb_gadget *g)
spin_lock_irqsave(&dwc->lock, flags);
dwc->gadget_driver = NULL;
dwc->is_remote_wakeup_enabled = false;
spin_unlock_irqrestore(&dwc->lock, flags);
dbg_event(0xFF, "fwq_started", 0);
@ -3362,6 +3370,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
dwc->gadget.speed = USB_SPEED_UNKNOWN;
dwc->link_state = DWC3_LINK_STATE_U0;
dwc->is_remote_wakeup_enabled = false;
}
static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)

3
include/linux/usb/dwc3-msm.h
View file

@ -136,6 +136,7 @@ int msm_data_fifo_config(struct usb_ep *ep, unsigned long addr, u32 size,
bool msm_dwc3_reset_ep_after_lpm(struct usb_gadget *gadget);
int msm_dwc3_reset_dbm_ep(struct usb_ep *ep);
int dwc3_msm_release_ss_lane(struct device *dev);
bool usb_get_remote_wakeup_status(struct usb_gadget *gadget);
#else
static inline struct usb_ep *usb_ep_autoconfig_by_name(
struct usb_gadget *gadget, struct usb_endpoint_descriptor *desc,
@ -163,6 +164,8 @@ static inline int msm_dwc3_reset_dbm_ep(struct usb_ep *ep)
{ return -ENODEV; }
static inline int dwc3_msm_release_ss_lane(struct device *dev)
{ return -ENODEV; }
static bool __maybe_unused usb_get_remote_wakeup_status(struct usb_gadget *gadget)
{ return false; }
#endif
#endif /* __LINUX_USB_DWC3_MSM_H */