Add basic support for probing the ColdFire UARTS via a devicetree.
Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx>
---
drivers/tty/serial/mcf.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index fd8cf3399855..d83f05d9e150 100644
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -21,6 +21,7 @@
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
@@ -463,6 +464,7 @@ static const struct uart_ops mcf_uart_ops = {
};
static struct mcf_uart mcf_ports[10];
+static int mcf_numports;
#define MCF_MAXPORTS ARRAY_SIZE(mcf_ports)
@@ -573,6 +575,8 @@ static int mcf_probe(struct platform_device *pdev)
struct uart_port *port;
struct resource *res;
+ if (pdev->id == -1)
+ pdev->id = mcf_numports;
if (pdev->id >= MCF_MAXPORTS)
return -ENODEV;
port = &mcf_ports[pdev->id].port;
@@ -598,6 +602,8 @@ static int mcf_probe(struct platform_device *pdev)
port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_MCF_CONSOLE);
uart_add_one_port(&mcf_driver, port);
+
+ mcf_numports++;
return 0;
}
@@ -617,11 +623,17 @@ static void mcf_remove(struct platform_device *pdev)
/****************************************************************************/
+static const struct of_device_id mcf_uart_dt_ids[] = {
+ { .compatible = "fsl,mcfuart", },
+ { }
+};
+
static struct platform_driver mcf_platform_driver = {
.probe = mcf_probe,
.remove = mcf_remove,
.driver = {
.name = "mcfuart",
+ .of_match_table = mcf_uart_dt_ids,
},
};
--
2.43.0
