diff options
| author | Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> | 2018-07-21 17:19:06 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-02 10:08:43 +0200 |
| commit | a3a10614ca0fce423f80821881cfeb088f152d24 (patch) | |
| tree | f5c1eff18ed1b147f40daf43147667824f9a98a8 /drivers/tty | |
| parent | 14288befeb572b4d2155f3435dca5cdec799152c (diff) | |
| download | linux-a3a10614ca0fce423f80821881cfeb088f152d24.tar.bz2 | |
tty: serial: uartlite: Add support for suspend and resume
Add suspend and resume handlers for uartlite
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/uartlite.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index b3a12be45801..98d3eadd2fd0 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -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, }, }; |