* @vbus_draw: current to be drawn from USB
* @imod_interval: set the interrupt moderation interval in 250ns
* increments or 0 to disable.
+ * @create_reg_debugfs: create debugfs entry to allow dwc3 register dump
*/
struct dwc3 {
struct usb_ctrlrequest *ctrl_req;
unsigned long l1_remote_wakeup_cnt;
wait_queue_head_t wait_linkstate;
+ bool create_reg_debugfs;
};
/* -------------------------------------------------------------------------- */
unsigned long flags;
u32 reg;
+ if (atomic_read(&dwc->in_lpm)) {
+ seq_puts(s, "USB device is powered off\n");
+ return 0;
+ }
+
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
spin_unlock_irqrestore(&dwc->lock, flags);
u32 mode = 0;
char buf[32] = {};
+ if (atomic_read(&dwc->in_lpm)) {
+ dev_err(dwc->dev, "USB device is powered off\n");
+ return count;
+ }
+
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
unsigned long flags;
u32 reg;
+
+ if (atomic_read(&dwc->in_lpm)) {
+ seq_puts(s, "USB device is powered off\n");
+ return 0;
+ }
+
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= DWC3_DCTL_TSTCTRL_MASK;
u32 testmode = 0;
char buf[32] = {};
+ if (atomic_read(&dwc->in_lpm)) {
+ seq_puts(s, "USB device is powered off\n");
+ return count;
+ }
+
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
enum dwc3_link_state state;
u32 reg;
+ if (atomic_read(&dwc->in_lpm)) {
+ seq_puts(s, "USB device is powered off\n");
+ return 0;
+ }
+
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
state = DWC3_DSTS_USBLNKST(reg);
enum dwc3_link_state state = 0;
char buf[32] = {};
+ if (atomic_read(&dwc->in_lpm)) {
+ seq_puts(s, "USB device is powered off\n");
+ return count;
+ }
+
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
dwc->regset->base = dwc->regs;
- file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
+ if (dwc->create_reg_debugfs) {
+ file = debugfs_create_regset32("regdump", 0444,
+ root, dwc->regset);
+ if (!file) {
+ dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
+ ret = -ENOMEM;
+ goto err1;
+ }
}
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {