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usb: dwc3: add DWC3_CONTROLLER_PULLUP event

Browse source 
when gadget pullup, add this event allow redriver
do some operation according to the pullup state.

Change-Id: I9cbd3f9e95aae327e1f872aff7ebff7a8926e5a5
Signed-off-by: Linyu Yuan <linyyuan@codeaurora.org>
This commit is contained in:
Linyu Yuan 2020-11-16 18:42:26 +08:00 • committed by Gerrit - the friendly Code Review server
commit 163554e4c7
3 changed files with 14 additions and 4 deletions
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1
drivers/usb/dwc3/core.h
View file

@ -1694,6 +1694,7 @@ enum dwc3_notify_event {
DWC3_CONTROLLER_NOTIFY_OTG_EVENT,
DWC3_CONTROLLER_SET_CURRENT_DRAW_EVENT,
DWC3_CONTROLLER_NOTIFY_DISABLE_UPDXFER,
DWC3_CONTROLLER_PULLUP,
/* USB GSI event buffer related notification */
DWC3_GSI_EVT_BUF_ALLOC,

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

@ -498,6 +498,8 @@ struct dwc3_msm {
struct usb_role_switch *role_switch;
bool ss_release_called;
int orientation_override;
struct device_node *ss_redriver_node;
};
#define USB_HSPHY_3P3_VOL_MIN 3050000 /* uV */
@ -2381,6 +2383,10 @@ static void dwc3_msm_notify_event(struct dwc3 *dwc,
dev_dbg(mdwc->dev, "DWC3_CONTROLLER_SET_CURRENT_DRAW_EVENT received\n");
schedule_work(&mdwc->vbus_draw_work);
break;
case DWC3_CONTROLLER_PULLUP:
dev_dbg(mdwc->dev, "DWC3_CONTROLLER_PULLUP received\n");
redriver_gadget_pullup(mdwc->ss_redriver_node, value);
break;
case DWC3_GSI_EVT_BUF_ALLOC:
dev_dbg(mdwc->dev, "DWC3_GSI_EVT_BUF_ALLOC\n");
dwc3_gsi_event_buf_alloc(dwc);
@ -4108,7 +4114,6 @@ int dwc3_msm_release_ss_lane(struct device *dev)
{
struct dwc3_msm *mdwc = dev_get_drvdata(dev);
struct dwc3 *dwc = NULL;
struct device_node *ssusb_redriver_node;
if (mdwc == NULL) {
dev_err(dev, "dwc3-msm is not initialized yet.\n");
@ -4126,9 +4131,7 @@ int dwc3_msm_release_ss_lane(struct device *dev)
flush_work(&mdwc->resume_work);
drain_workqueue(mdwc->sm_usb_wq);
ssusb_redriver_node =
of_parse_phandle(mdwc->dev->of_node, "ssusb_redriver", 0);
redriver_release_usb_lanes(ssusb_redriver_node);
redriver_release_usb_lanes(mdwc->ss_redriver_node);
mdwc->ss_release_called = true;
if (mdwc->id_state == DWC3_ID_GROUND) {
@ -4444,6 +4447,8 @@ static int dwc3_msm_probe(struct platform_device *pdev)
mutex_init(&mdwc->suspend_resume_mutex);
mdwc->ss_redriver_node = of_parse_phandle(node, "ssusb_redriver", 0);
if (of_property_read_bool(node, "usb-role-switch")) {
role_desc.fwnode = dev_fwnode(&pdev->dev);
mdwc->role_switch = usb_role_switch_register(mdwc->dev,
@ -4527,6 +4532,7 @@ static int dwc3_msm_probe(struct platform_device *pdev)
put_dwc3:
usb_role_switch_unregister(mdwc->role_switch);
of_node_put(mdwc->ss_redriver_node);
platform_device_put(mdwc->dwc3);
for (i = 0; i < ARRAY_SIZE(mdwc->icc_paths); i++)
icc_put(mdwc->icc_paths[i]);
@ -4545,6 +4551,7 @@ static int dwc3_msm_remove(struct platform_device *pdev)
int i, ret_pm;
usb_role_switch_unregister(mdwc->role_switch);
of_node_put(mdwc->ss_redriver_node);
device_remove_file(&pdev->dev, &dev_attr_mode);
device_remove_file(&pdev->dev, &dev_attr_speed);
device_remove_file(&pdev->dev, &dev_attr_bus_vote);

2
drivers/usb/dwc3/gadget.c
View file

@ -2232,6 +2232,8 @@ static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)
if (is_on)
dwc3_device_core_soft_reset(dwc);
dwc3_notify_event(dwc, DWC3_CONTROLLER_PULLUP, is_on);
spin_lock_irqsave(&dwc->lock, flags);
if (dwc->ep0state != EP0_SETUP_PHASE)
dbg_event(0xFF, "EP0 is not in SETUP phase\n", dwc->ep0state);