Merge "usb: dwc3: Add debugfs entry to toggle compliance pattern" (98ed1806) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/usb/dwc3/core.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -321,6 +321,7 @@

		/* Global USB3 PIPE Control Register */
		#define DWC3_GUSB3PIPECTL_PHYSOFTRST BIT(31)
		#define DWC3_GUSB3PIPECTL_HSTPRTCMPL BIT(30)
		#define DWC3_GUSB3PIPECTL_U2SSINP3OK BIT(29)
		#define DWC3_GUSB3PIPECTL_DISRXDETINP3 BIT(28)
		#define DWC3_GUSB3PIPECTL_UX_EXIT_PX BIT(27)

drivers/usb/dwc3/debugfs.c

+45 −0

Original line number	Diff line number	Diff line
		@@ -689,6 +689,49 @@ static const struct file_operations dwc3_link_state_fops = {
		.release = single_release,
		};

		static int dwc3_cp_toggle_open(struct inode inode, struct file file)
		{
		int (show)(struct seq_file , void *) = inode->i_private;

		return single_open(file, show, inode->i_private);
		}

		static ssize_t dwc3_cp_toggle_write(struct file *file,
		const char __user ubuf, size_t count, loff_t ppos)
		{
		struct seq_file *s = file->private_data;
		struct dwc3 *dwc = s->private;
		u32 reg;

		if (atomic_read(&dwc->in_lpm)) {
		pr_err("%s: USB device is powered off\n", __func__);
		return 0;
		}

		if (dwc3_gadget_get_link_state(dwc) != DWC3_LINK_STATE_CMPLY) {
		pr_err("%s: USB Device is not in compliance mode\n", __func__);
		return -EINVAL;
		}

		reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
		reg \|= DWC3_GUSB3PIPECTL_HSTPRTCMPL;
		dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
		msleep(200);
		reg &= ~DWC3_GUSB3PIPECTL_HSTPRTCMPL;
		dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
		msleep(200);

		return count;
		}

		static const struct file_operations dwc3_cp_toggle_fops = {
		.write = dwc3_cp_toggle_write,
		.open = dwc3_cp_toggle_open,
		.read = NULL,
		.llseek = seq_lseek,
		.release = single_release,
		};

		struct dwc3_ep_file_map {
		const char name[25];
		const struct file_operations *const fops;
		@@ -1224,6 +1267,8 @@ void dwc3_debugfs_init(struct dwc3 *dwc)
		&dwc3_testmode_fops);
		debugfs_create_file("link_state", S_IRUGO \| S_IWUSR, root, dwc,
		&dwc3_link_state_fops);
		debugfs_create_file("cp_toggle", 0200, root, dwc,
		&dwc3_cp_toggle_fops);
		dwc3_debugfs_create_endpoint_dirs(dwc, root);

		file = debugfs_create_file("int_events", 0644, root, dwc,