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From 5da494c55b3ffcfed32ba0d8b4ad87540f783547 Mon Sep 17 00:00:00 2001
From: Jonghwa Lee <jonghwa3.lee@samsung.com>
Date: Mon, 7 Oct 2013 15:25:01 +0900
Subject: [PATCH 0829/1302] devfreq: exynos4: Support DT in exynos4 busfreq
driver.
This patch makes exynos4 busfreq driver to support device tree.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
---
drivers/devfreq/exynos4_bus.c | 31 +++++++++++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/drivers/devfreq/exynos4_bus.c b/drivers/devfreq/exynos4_bus.c
index 3f37f3b..7319e81 100644
--- a/drivers/devfreq/exynos4_bus.c
+++ b/drivers/devfreq/exynos4_bus.c
@@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/module.h>
+#include <linux/of.h>
/* Exynos4 ASV has been in the mailing list, but not upstreamed, yet. */
#ifdef CONFIG_EXYNOS_ASV
@@ -1016,12 +1017,28 @@ unlock:
return NOTIFY_DONE;
}
+#ifdef CONFIG_OF
+static const struct of_device_id exynos4_busfreq_match[] = {
+ {
+ .compatible = "samsung,exynos4210-busfreq",
+ .data = (void *)TYPE_BUSF_EXYNOS4210,
+ },
+ {
+ .compatible = "samsung,exynos4x12-busfreq",
+ .data = (void *)TYPE_BUSF_EXYNOS4x12,
+ },
+};
+MODULE_DEVICE_TABLE(of, exynos4_busfreq_match[]);
+#else
+#define exynos4_busfreq_match NULL
+#endif
+
static int exynos4_busfreq_probe(struct platform_device *pdev)
{
struct busfreq_data *data;
struct opp *opp;
struct device *dev = &pdev->dev;
- int err = 0;
+ int type, err = 0;
data = devm_kzalloc(&pdev->dev, sizeof(struct busfreq_data), GFP_KERNEL);
if (data == NULL) {
@@ -1029,11 +1046,20 @@ static int exynos4_busfreq_probe(struct platform_device *pdev)
return -ENOMEM;
}
- data->type = pdev->id_entry->driver_data;
+ if (dev->of_node) {
+ const struct of_device_id *match;
+ match = of_match_node(exynos4_busfreq_match, dev->of_node);
+ type = (int) match->data;
+ } else {
+ type = pdev->id_entry->driver_data;
+ }
+
+ data->type = type;
data->dmc[0].hw_base = S5P_VA_DMC0;
data->dmc[1].hw_base = S5P_VA_DMC1;
data->pm_notifier.notifier_call = exynos4_busfreq_pm_notifier_event;
data->dev = dev;
+
mutex_init(&data->lock);
switch (data->type) {
@@ -1133,6 +1159,7 @@ static struct platform_driver exynos4_busfreq_driver = {
.name = "exynos4-busfreq",
.owner = THIS_MODULE,
.pm = &exynos4_busfreq_pm,
+ .of_match_table = of_match_ptr(exynos4_busfreq_match),
},
};
--
1.8.3.2
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