Merge "usb: gsi: Add debugfs support for remote wakeup on each interface" (89e4bba3) · Commits · e / devices / android_kernel_xiaomi_sm6125

drivers/usb/gadget/function/f_gsi.c

+46 −43

Original line number	Diff line number	Diff line
		@@ -269,21 +269,15 @@ static void gsi_rw_timer_func(unsigned long arg)
		static struct f_gsi *get_connected_gsi(void)
		{
		struct f_gsi *connected_gsi;
		bool gsi_connected = false;
		int i;

		for (i = 0; i < IPA_USB_MAX_TETH_PROT_SIZE; i++) {
		for (i = 0; i < USB_PROT_MAX; i++) {
		connected_gsi = __gsi[i];
		if (connected_gsi && atomic_read(&connected_gsi->connected)) {
		gsi_connected = true;
		break;
		}
		if (connected_gsi && atomic_read(&connected_gsi->connected))
		return connected_gsi;
		}

		if (!gsi_connected)
		connected_gsi = NULL;

		return connected_gsi;
		return NULL;
		}

		#define DEFAULT_RW_TIMER_INTERVAL 500 /* in ms */
		@@ -291,15 +285,12 @@ static ssize_t usb_gsi_rw_write(struct file *file,
		const char __user ubuf, size_t count, loff_t ppos)
		{
		struct f_gsi *gsi;
		struct usb_function *func;
		struct usb_gadget *gadget;
		u8 input;
		int i;
		int ret;

		gsi = get_connected_gsi();
		if (!gsi) {
		log_event_dbg("%s: gsi not connected\n", __func__);
		goto err;
		}

		if (ubuf == NULL) {
		log_event_dbg("%s: buffer is Null.\n", __func__);
		goto err;
		@@ -311,25 +302,35 @@ static ssize_t usb_gsi_rw_write(struct file *file,
		goto err;
		}

		if (gsi->debugfs_rw_timer_enable == !!input) {
		if (!!input)
		log_event_dbg("%s: RW already enabled\n", __func__);
		else
		log_event_dbg("%s: RW already disabled\n", __func__);
		goto err;
		}

		for (i = 0; i < USB_PROT_MAX; i++) {
		gsi = __gsi[i];
		if (gsi && atomic_read(&gsi->connected)) {
		func = &gsi->function;
		gadget = func->config->cdev->gadget;
		gsi->debugfs_rw_timer_enable = !!input;
		if (gadget->speed >= USB_SPEED_SUPER &&
		!func->func_is_suspended) {
		gsi->debugfs_rw_timer_enable = 0;
		del_timer_sync(&gsi->gsi_rw_timer);
		continue;
		}

		if (gsi->debugfs_rw_timer_enable) {
		mod_timer(&gsi->gsi_rw_timer, jiffies +
		msecs_to_jiffies(gsi->gsi_rw_timer_interval));
		log_event_dbg("%s: timer initialized\n", __func__);
		log_event_dbg("%s: timer initialized\n",
		__func__);
		} else {
		del_timer_sync(&gsi->gsi_rw_timer);
		log_event_dbg("%s: timer deleted\n", __func__);
		}

		if (gadget->speed < USB_SPEED_SUPER)
		break;
		}
		}

		err:
		return count;
		}
		@@ -338,14 +339,16 @@ static int usb_gsi_rw_show(struct seq_file s, void unused)
		{

		struct f_gsi *gsi;
		int i;
		u8 enable = 0;

		gsi = get_connected_gsi();
		if (!gsi) {
		log_event_dbg("%s: gsi not connected\n", __func__);
		return 0;
		for (i = 0; i < USB_PROT_MAX; i++) {
		gsi = __gsi[i];
		if (gsi && atomic_read(&gsi->connected))
		enable \|= gsi->debugfs_rw_timer_enable;
		}

		seq_printf(s, "%d\n", gsi->debugfs_rw_timer_enable);
		seq_printf(s, "%d\n", enable);

		return 0;
		}
		@@ -369,14 +372,9 @@ static ssize_t usb_gsi_rw_timer_write(struct file *file,
		{
		struct f_gsi *gsi;
		u16 timer_val;
		int i;
		int ret;

		gsi = get_connected_gsi();
		if (!gsi) {
		log_event_dbg("%s: gsi not connected\n", __func__);
		goto err;
		}

		if (ubuf == NULL) {
		log_event_dbg("%s: buffer is NULL.\n", __func__);
		goto err;
		@@ -393,7 +391,12 @@ static ssize_t usb_gsi_rw_timer_write(struct file *file,
		goto err;
		}

		for (i = 0; i < USB_PROT_MAX; i++) {
		gsi = __gsi[i];
		if (gsi && atomic_read(&gsi->connected))
		gsi->gsi_rw_timer_interval = timer_val;
		}

		err:
		return count;
		}