ARM: at91/tc: add device tree support to atmel_tclib

[deliverable/linux.git] / drivers / misc / atmel_tclib.c

diff --git a/drivers/misc/atmel_tclib.c b/drivers/misc/atmel_tclib.c
index 7a6512a148d432c20e64be7f08944f4e63a00325..de6dea7c5d52e791f720df30dced9d4b8ec279b8 100644 (file)
--- a/drivers/misc/atmel_tclib.c
+++ b/drivers/misc/atmel_tclib.c
@@ -6,8 +6,10 @@
 #include <linux/ioport.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
+#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/export.h>
+#include <linux/of.h>
 
 /*
  * This is a thin library to solve the problem of how to portably allocate
@@ -48,7 +50,13 @@ struct atmel_tc *atmel_tc_alloc(unsigned block, const char *name)
 
        spin_lock(&tc_list_lock);
        list_for_each_entry(tc, &tc_list, node) {
-               if (tc->pdev->id == block) {
+               if (tc->pdev->dev.of_node) {
+                       if (of_alias_get_id(tc->pdev->dev.of_node, "tcb")
+                                       == block) {
+                               pdev = tc->pdev;
+                               break;
+                       }
+               } else if (tc->pdev->id == block) {
                        pdev = tc->pdev;
                        break;
                }
@@ -105,6 +113,18 @@ void atmel_tc_free(struct atmel_tc *tc)
 }
 EXPORT_SYMBOL_GPL(atmel_tc_free);
 
+#if defined(CONFIG_OF)
+static const struct of_device_id atmel_tcb_dt_ids[] = {
+       {
+               .compatible = "atmel,at91rm9200-tcb",
+       }, {
+               /* sentinel */
+       }
+};
+
+MODULE_DEVICE_TABLE(of, atmel_tcb_dt_ids);
+#endif
+
 static int __init tc_probe(struct platform_device *pdev)
 {
        struct atmel_tc *tc;
@@ -154,7 +174,10 @@ static int __init tc_probe(struct platform_device *pdev)
 }
 
 static struct platform_driver tc_driver = {
-       .driver.name    = "atmel_tcb",
+       .driver = {
+               .name   = "atmel_tcb",
+               .of_match_table = of_match_ptr(atmel_tcb_dt_ids),
+       },
 };
 
 static int __init tc_init(void)