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> | 2024-01-08 10:30:11 +0000 |
| commit | 531a43d0ba3339fc35e0ac2108dac1dc57bc5ee4 (patch) | |
| tree | 87a3bfa7f93c72cc6b22f1cfa16eb676ac6ba1e0 | |
| parent | d95863254cdebccab66e770184d992f2898d5b97 (diff) | |
add sa11x0 uart clocks
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| -rw-r--r-- | arch/arm/mach-sa1100/clock.c | 3 | ||||
| -rw-r--r-- | drivers/tty/serial/sa1100.c | 16 |
2 files changed, 18 insertions, 1 deletions
diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c index a104cfa4b123..d40ce6b0ae05 100644 --- a/arch/arm/mach-sa1100/clock.c +++ b/arch/arm/mach-sa1100/clock.c @@ -107,6 +107,9 @@ int __init sa11xx_clk_init(void) return PTR_ERR(hw); clk_hw_register_clkdev(hw, "OSTIMER0", NULL); + clk_hw_register_clkdev(hw, NULL, "sa11x0-uart.1"); + clk_hw_register_clkdev(hw, NULL, "sa11x0-uart.2"); + clk_hw_register_clkdev(hw, NULL, "sa11x0-uart.3"); hw = kzalloc(sizeof(*hw), GFP_KERNEL); if (!hw) diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c index 5d6e2fab2826..d85ec04f200e 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; @@ -340,13 +342,19 @@ 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 @@ -383,6 +391,8 @@ 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 @@ -938,6 +948,10 @@ 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); |