diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2016-09-13 18:51:55 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-05-23 16:02:21 +0100 |
| commit | 4523046a2389c6ee03f4b468a41cb5e5024b617c (patch) | |
| tree | 03d9b5d4b9bb98d172e5c953ba0ba9e4aaa69f33 /drivers | |
| parent | 185844cfa72f5ec1395be77528ca4003f2cbb21a (diff) | |
add sa11x0 uart clocks
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/sa1100.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c index 3aba89ab4796..48dfefdb5568 100644 --- a/drivers/tty/serial/sa1100.c +++ b/drivers/tty/serial/sa1100.c @@ -8,6 +8,7 @@ */ #include <linux/module.h> +#include <linux/clk.h> #include <linux/gpio/consumer.h> #include <linux/ioport.h> #include <linux/init.h> @@ -76,6 +77,7 @@ struct sa1100_port { struct uart_port port; struct timer_list timer; unsigned int old_status; + struct clk *clk; struct mctrl_gpios *gpios; struct gpio_desc *xcvr_enable; unsigned wake; @@ -365,13 +367,19 @@ static int sa1100_startup(struct uart_port *port) container_of(port, struct sa1100_port, port); int retval; + retval = clk_prepare_enable(sport->clk); + if (retval) + return retval; + /* * Allocate the IRQ */ retval = request_irq(sport->port.irq, sa1100_int, 0, "sa11x0-uart", sport); - if (retval) + if (retval) { + clk_disable_unprepare(sport->clk); return retval; + } /* * Finally, clear and enable interrupts @@ -408,6 +416,8 @@ static void sa1100_shutdown(struct uart_port *port) * Disable all interrupts, port and break condition. */ UART_PUT_UTCR3(sport, 0); + + clk_disable_unprepare(sport->clk); } static void @@ -963,6 +973,10 @@ static int sa1100_serial_add_one_port(struct sa1100_port *sport, struct platform sport->xcvr_enable = NULL; } + sport->clk = devm_clk_get(sport->port.dev, NULL); + if (IS_ERR(sport->clk)) + return PTR_ERR(sport->clk); + device_init_wakeup(sport->port.dev, !!sport->wake); platform_set_drvdata(dev, sport); |