Merge "usb: dwc3: debugfs: Add suppot for Enabling L1 in HS through debugfs" (fb84cc3a) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/usb/dwc3/debugfs.c

+47 −0

Original line number	Diff line number	Diff line
		@@ -1227,6 +1227,51 @@ static const struct file_operations dwc3_gadget_int_events_fops = {
		.release = single_release,
		};

		static ssize_t dwc3_gadget_l1_store(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;
		bool enable_l1;
		int ret;

		ret = kstrtobool_from_user(ubuf, count, &enable_l1);
		if (ret < 0) {
		dev_err(dwc->dev, "%s: can't get entered value: %d\n",
		__func__, ret);
		return ret;
		}

		dwc->gadget.lpm_capable = enable_l1;
		dwc->usb2_gadget_lpm_disable = !enable_l1;

		pr_info("dwc3 gadget lpm : %s. Perform a plugout/plugin\n",
		enable_l1 ? "enabled" : "disabled");

		return count;
		}

		static int dwc3_gadget_l1_status_show(struct seq_file s, void unused)
		{
		struct dwc3 *dwc = s->private;

		seq_printf(s, "%d\n", dwc->gadget.lpm_capable);
		return 0;
		}

		static int dwc3_gadget_l1_open(struct inode inode, struct file f)
		{
		return single_open(f, dwc3_gadget_l1_status_show, inode->i_private);
		}

		static const struct file_operations dwc3_l1_enable_ops = {
		.open = dwc3_gadget_l1_open,
		.write = dwc3_gadget_l1_store,
		.read = seq_read,
		.llseek = seq_lseek,
		.release = single_release,
		};

		void dwc3_debugfs_init(struct dwc3 *dwc)
		{
		struct dentry *root;
		@@ -1255,6 +1300,8 @@ void dwc3_debugfs_init(struct dwc3 *dwc)

		debugfs_create_file("lsp_dump", S_IRUGO \| S_IWUSR, root, dwc,
		&dwc3_lsp_fops);
		debugfs_create_file("enable_l1_suspend", 0644, root, dwc,
		&dwc3_l1_enable_ops);

		if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
		debugfs_create_file("mode", S_IRUGO \| S_IWUSR, root, dwc,