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path: root/drivers/tty/serial/of_serial.c
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Diffstat (limited to 'drivers/tty/serial/of_serial.c')
-rw-r--r--drivers/tty/serial/of_serial.c75
1 files changed, 74 insertions, 1 deletions
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index bf355050eab6..6dbd34c4f9e7 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -9,6 +9,7 @@
* 2 of the License, or (at your option) any later version.
*
*/
+#include <linux/console.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
@@ -129,8 +130,15 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
port->dev = &ofdev->dev;
- if (type == PORT_TEGRA)
+ switch (type) {
+ case PORT_TEGRA:
port->handle_break = tegra_serial_handle_break;
+ break;
+
+ case PORT_RT2880:
+ port->iotype = UPIO_AU;
+ break;
+ }
return 0;
out:
@@ -240,6 +248,70 @@ static int of_platform_serial_remove(struct platform_device *ofdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_SERIAL_8250
+static void of_serial_suspend_8250(struct of_serial_info *info)
+{
+ struct uart_8250_port *port8250 = serial8250_get_port(info->line);
+ struct uart_port *port = &port8250->port;
+
+ serial8250_suspend_port(info->line);
+ if (info->clk && (!uart_console(port) || console_suspend_enabled))
+ clk_disable_unprepare(info->clk);
+}
+
+static void of_serial_resume_8250(struct of_serial_info *info)
+{
+ struct uart_8250_port *port8250 = serial8250_get_port(info->line);
+ struct uart_port *port = &port8250->port;
+
+ if (info->clk && (!uart_console(port) || console_suspend_enabled))
+ clk_prepare_enable(info->clk);
+
+ serial8250_resume_port(info->line);
+}
+#else
+static inline void of_serial_suspend_8250(struct of_serial_info *info)
+{
+}
+
+static inline void of_serial_resume_8250(struct of_serial_info *info)
+{
+}
+#endif
+
+static int of_serial_suspend(struct device *dev)
+{
+ struct of_serial_info *info = dev_get_drvdata(dev);
+
+ switch (info->type) {
+ case PORT_8250 ... PORT_MAX_8250:
+ of_serial_suspend_8250(info);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int of_serial_resume(struct device *dev)
+{
+ struct of_serial_info *info = dev_get_drvdata(dev);
+
+ switch (info->type) {
+ case PORT_8250 ... PORT_MAX_8250:
+ of_serial_resume_8250(info);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+#endif
+static SIMPLE_DEV_PM_OPS(of_serial_pm_ops, of_serial_suspend, of_serial_resume);
+
/*
* A few common types, add more as needed.
*/
@@ -252,6 +324,7 @@ static struct of_device_id of_platform_serial_table[] = {
{ .compatible = "ns16850", .data = (void *)PORT_16850, },
{ .compatible = "nvidia,tegra20-uart", .data = (void *)PORT_TEGRA, },
{ .compatible = "nxp,lpc3220-uart", .data = (void *)PORT_LPC3220, },
+ { .compatible = "ralink,rt2880-uart", .data = (void *)PORT_RT2880, },
{ .compatible = "altr,16550-FIFO32",
.data = (void *)PORT_ALTR_16550_F32, },
{ .compatible = "altr,16550-FIFO64",