Take advantage of the newly introduced LED trigger support for
serial ports by registering ports and calling uart_led_event()
in receive and transmit routines.
Signed-off-by: Tobias Doerffel <tobias.doerffel@xxxxxxxxxxxxxx>
---
drivers/tty/serial/imx.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 016e4be..c9559e4 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -30,6 +30,7 @@
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial_core.h>
+#include <linux/serial_leds.h>
#include <linux/serial.h>
#include <linux/clk.h>
#include <linux/delay.h>
@@ -441,6 +442,8 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
return;
}
+ uart_led_event(&sport->port, UART_LED_EVENT_TX);
+
if (sport->dma_is_enabled) {
/*
* We've just sent a X-char Ensure the TX DMA is enabled
@@ -650,6 +653,8 @@ static irqreturn_t imx_rxint(int irq, void *dev_id)
struct tty_port *port = &sport->port.state->port;
unsigned long flags, temp;
+ uart_led_event(&sport->port, UART_LED_EVENT_RX);
+
spin_lock_irqsave(&sport->port.lock, flags);
while (readl(sport->port.membase + USR2) & USR2_RDR) {
@@ -723,6 +728,8 @@ static void imx_dma_rxint(struct imx_port *sport)
unsigned long temp;
unsigned long flags;
+ uart_led_event(&sport->port, UART_LED_EVENT_RX);
+
spin_lock_irqsave(&sport->port.lock, flags);
temp = readl(sport->port.membase + USR2);
@@ -2002,6 +2009,9 @@ static int serial_imx_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, sport);
+ /* Register LED triggers for port */
+ uart_led_register(&imx_reg, &sport->port);
+
return uart_add_one_port(&imx_reg, &sport->port);
}
@@ -2009,6 +2019,9 @@ static int serial_imx_remove(struct platform_device *pdev)
{
struct imx_port *sport = platform_get_drvdata(pdev);
+ /* Unregister LED triggers for port */
+ uart_led_unregister(&sport->port);
+
return uart_remove_one_port(&imx_reg, &sport->port);
}
--
2.1.4
--
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