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Commit a3a10614 authored by Shubhrajyoti Datta's avatar Shubhrajyoti Datta Committed by Greg Kroah-Hartman
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tty: serial: uartlite: Add support for suspend and resume 



Add suspend and resume handlers for uartlite

Signed-off-by: default avatarShubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 14288bef

drivers/tty/serial/uartlite.c

+36 −0
Original line number Diff line number Diff line
@@ -690,9 +690,44 @@ static int ulite_release(struct device *dev) 
	return rc;

}



/**

 * ulite_suspend - Stop the device.

 *

 * @dev: handle to the device structure.

 * Return: 0 always.

 */

static int __maybe_unused ulite_suspend(struct device *dev)

{

	struct uart_port *port = dev_get_drvdata(dev);



	if (port)

		uart_suspend_port(&ulite_uart_driver, port);



	return 0;

}



/**

 * ulite_resume - Resume the device.

 *

 * @dev: handle to the device structure.

 * Return: 0 on success, errno otherwise.

 */

static int __maybe_unused ulite_resume(struct device *dev)

{

	struct uart_port *port = dev_get_drvdata(dev);



	if (port)

		uart_resume_port(&ulite_uart_driver, port);



	return 0;

}



/* ---------------------------------------------------------------------

 * Platform bus binding

 */



static SIMPLE_DEV_PM_OPS(ulite_pm_ops, ulite_suspend, ulite_resume);



#if defined(CONFIG_OF)

/* Match table for of_platform binding */

static const struct of_device_id ulite_of_match[] = {
@@ -768,6 +803,7 @@ static struct platform_driver ulite_platform_driver = { 
	.driver = {

		.name  = "uartlite",

		.of_match_table = of_match_ptr(ulite_of_match),

		.pm = &ulite_pm_ops,

	},

};