hwrng: omap - Add device tree support

Add Device Tree suport to the omap-rng driver.
Currently, only support for OMAP2 and OMAP3 is
being added but support for OMAP4 and OMAP5 will
be added in a subsequent patch.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 5a2ab3b3cd78..3076c9de7a02 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -24,6 +24,9 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/pm_runtime.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
 
 #include <asm/io.h>
 
@@ -104,6 +107,14 @@ static struct hwrng omap_rng_ops = {
         .data_read      = omap_rng_data_read,
 };
 
+#if defined(CONFIG_OF)
+static const struct of_device_id omap_rng_of_match[] = {
+                { .compatible = "ti,omap2-rng" },
+                {},
+};
+MODULE_DEVICE_TABLE(of, omap_rng_of_match);
+#endif
+
 static int omap_rng_probe(struct platform_device *pdev)
 {
         struct omap_rng_private_data *priv;
@@ -197,6 +208,7 @@ static struct platform_driver omap_rng_driver = {
                 .name           = "omap_rng",
                 .owner          = THIS_MODULE,
                 .pm             = OMAP_RNG_PM,
+                .of_match_table = of_match_ptr(omap_rng_of_match),
         },
         .probe          = omap_rng_probe,
         .remove         = __exit_p(omap_rng_remove),