[PATCH v4] altera_ps2: Add devicetree support

[Thomas Chou <thomas@wytron.com.tw>]

From: Walter Goossens <waltergoossens@home.nl>

Signed-off-by: Walter Goossens <waltergoossens@home.nl>
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
---
v2 use const and add compat version.
v3 change compatible vendor to ALTR.
    add dts binding doc.
v4 condition module device table export for of.

Grant, please take it through your tree as Dmitry agreed.

 .../devicetree/bindings/serio/altera_ps2.txt       |    4 ++++
 drivers/input/serio/altera_ps2.c                   |   15 +++++++++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/serio/altera_ps2.txt

diff --git a/Documentation/devicetree/bindings/serio/altera_ps2.txt b/Documentation/devicetree/bindings/serio/altera_ps2.txt
new file mode 100644
index 0000000..4d9eecc
--- /dev/null
+++ b/Documentation/devicetree/bindings/serio/altera_ps2.txt
@@ -0,0 +1,4 @@
+Altera UP PS/2 controller
+
+Required properties:
+- compatible : should be "ALTR,ps2-1.0".
diff --git a/drivers/input/serio/altera_ps2.c b/drivers/input/serio/altera_ps2.c
index 7998560..3fee88b 100644
--- a/drivers/input/serio/altera_ps2.c
+++ b/drivers/input/serio/altera_ps2.c
@@ -19,6 +19,7 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/slab.h>
+#include <linux/of.h>
 
 #define DRV_NAME "altera_ps2"
 
@@ -173,6 +174,16 @@ static int __devexit altera_ps2_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id altera_ps2_match[] = {
+	{ .compatible = "ALTR,ps2-1.0", },
+	{},
+}
+MODULE_DEVICE_TABLE(of, altera_ps2_match);
+#else /* CONFIG_OF */
+#define altera_ps2_match NULL
+#endif /* CONFIG_OF */
+
 /*
  * Our device driver structure
  */
@@ -182,6 +193,7 @@ static struct platform_driver altera_ps2_driver = {
 	.driver	= {
 		.name	= DRV_NAME,
 		.owner	= THIS_MODULE,
+		.of_match_table = altera_ps2_match,
 	},
 };
 
@@ -189,13 +201,12 @@ static int __init altera_ps2_init(void)
 {
 	return platform_driver_register(&altera_ps2_driver);
 }
+module_init(altera_ps2_init);
 
 static void __exit altera_ps2_exit(void)
 {
 	platform_driver_unregister(&altera_ps2_driver);
 }
-
-module_init(altera_ps2_init);
 module_exit(altera_ps2_exit);
 
 MODULE_DESCRIPTION("Altera University Program PS2 controller driver");
-- 
1.7.4