tty: serial: bcm63xx_uart: add support for DT probing

Add a matching table for the the bcm63xx_uart driver on the compatible
string "brcm,bcm6345-uart" which covers all BCM63xx implementations and
reflects the fact that this block was first introduced with the BCM6345
SoC.  Also make sure that we convert the id based on the uart aliases
provided by the relevant Device Tree.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index 37e7e336f70a54e54d8bb2a64a108dcde814b9b0..a47421e4627c5b7c0796bd72c42db572e1b8f938 100644 (file)
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -31,6 +31,7 @@
 #include <linux/serial_core.h>
 #include <linux/serial_bcm63xx.h>
 #include <linux/io.h>
+#include <linux/of.h>
 
 #define BCM63XX_NR_UARTS       2
 
@@ -806,6 +807,9 @@ static int bcm_uart_probe(struct platform_device *pdev)
        struct clk *clk;
        int ret;
 
+       if (pdev->dev.of_node)
+               pdev->id = of_alias_get_id(pdev->dev.of_node, "uart");
+
        if (pdev->id < 0 || pdev->id >= BCM63XX_NR_UARTS)
                return -EINVAL;
 
@@ -857,6 +861,12 @@ static int bcm_uart_remove(struct platform_device *pdev)
        return 0;
 }
 
+static const struct of_device_id bcm63xx_of_match[] = {
+       { .compatible = "brcm,bcm6345-uart" },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, bcm63xx_of_match);
+
 /*
  * platform driver stuff
  */
@@ -866,6 +876,7 @@ static struct platform_driver bcm_uart_platform_driver = {
        .driver = {
                .owner = THIS_MODULE,
                .name  = "bcm63xx_uart",
+               .of_match_table = bcm63xx_of_match,
        },
 };