drivers: misc: ti_dac7512: add support for DT matching

Only matching is done via DT, no other details can be passed.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/misc/ti,dac7512.txt b/Documentation/devicetree/bindings/misc/ti,dac7512.txt
new file mode 100644 (file)
index 0000000..1db4593
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/ti,dac7512.txt
@@ -0,0 +1,20 @@
+TI DAC7512 DEVICETREE BINDINGS
+
+Required properties:
+
+       - "compatible"          Must be set to "ti,dac7512"
+
+Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt
+apply. In particular, "reg" and "spi-max-frequency" properties must be given.
+
+
+Example:
+
+       spi_master {
+               dac7512: dac7512@0 {
+                       compatible = "ti,dac7512";
+                       reg = <0>; /* CS0 */
+                       spi-max-frequency = <1000000>;
+               };
+       };
+

diff --git a/drivers/misc/ti_dac7512.c b/drivers/misc/ti_dac7512.c
index 6393a68..83da711 100644 (file)
--- a/drivers/misc/ti_dac7512.c
+++ b/drivers/misc/ti_dac7512.c
@@ -22,6 +22,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/spi/spi.h>
+#include <linux/of.h>
 
 static ssize_t dac7512_store_val(struct device *dev,
                                 struct device_attribute *attr,
@@ -78,10 +79,19 @@ static const struct spi_device_id dac7512_id_table[] = {
 };
 MODULE_DEVICE_TABLE(spi, dac7512_id_table);
 
+#ifdef CONFIG_OF
+static const struct of_device_id dac7512_of_match[] = {
+       { .compatible = "ti,dac7512", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, dac7512_of_match);
+#endif
+
 static struct spi_driver dac7512_driver = {
        .driver = {
                .name   = "dac7512",
                .owner  = THIS_MODULE,
+               .of_match_table = of_match_ptr(dac7512_of_match),
        },
        .probe  = dac7512_probe,
        .remove = dac7512_remove,