w1: omap-hdq: support device probing with device-tree

This driver has no 'compatible' string and so is not found when
using device-tree.

Add one with value to match
		hdqw1w: 1w@480b2000 {
device in omap3.dtsi.

Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/Documentation/devicetree/bindings/w1/omap-hdq.txt b/Documentation/devicetree/bindings/w1/omap-hdq.txt
new file mode 100644 (file)
index 0000000..fef7947
--- /dev/null
+++ b/Documentation/devicetree/bindings/w1/omap-hdq.txt
@@ -0,0 +1,17 @@
+* OMAP HDQ One wire bus master controller
+
+Required properties:
+- compatible : should be "ti,omap3-1w"
+- reg : Address and length of the register set for the device
+- interrupts : interrupt line.
+- ti,hwmods : "hdq1w"
+
+Example:
+
+- From omap3.dtsi
+  hdqw1w: 1w@480b2000 {
+       compatible = "ti,omap3-1w";
+       reg = <0x480b2000 0x1000>;
+       interrupts = <58>;
+       ti,hwmods = "hdq1w";
+  };

diff --git a/drivers/w1/masters/omap_hdq.c b/drivers/w1/masters/omap_hdq.c
index 9900e8e..03321d6 100644 (file)
--- a/drivers/w1/masters/omap_hdq.c
+++ b/drivers/w1/masters/omap_hdq.c
@@ -72,11 +72,18 @@ struct hdq_data {
 static int omap_hdq_probe(struct platform_device *pdev);
 static int omap_hdq_remove(struct platform_device *pdev);
 
+static struct of_device_id omap_hdq_dt_ids[] = {
+       { .compatible = "ti,omap3-1w" },
+       {}
+};
+MODULE_DEVICE_TABLE(of, omap_hdq_dt_ids);
+
 static struct platform_driver omap_hdq_driver = {
        .probe =        omap_hdq_probe,
        .remove =       omap_hdq_remove,
        .driver =       {
                .name = "omap_hdq",
+               .of_match_table = omap_hdq_dt_ids,
        },
 };