[media] mt9v032: Use the common clock framework

Configure the device external clock using the common clock framework
instead of a board code callback function.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

2 files changed, 11 insertions, 10 deletions

diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
index 60c6f6739560..2c50effaa334 100644
--- a/drivers/media/i2c/mt9v032.c
+++ b/drivers/media/i2c/mt9v032.c
@@ -12,6 +12,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/log2.h>
@@ -135,6 +136,8 @@ struct mt9v032 {
         struct mutex power_lock;
         int power_count;
 
+        struct clk *clk;
+
         struct mt9v032_platform_data *pdata;
 
         u32 sysclk;
@@ -219,10 +222,9 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032)
         struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
         int ret;
 
-        if (mt9v032->pdata->set_clock) {
-                mt9v032->pdata->set_clock(&mt9v032->subdev, mt9v032->sysclk);
-                udelay(1);
-        }
+        clk_set_rate(mt9v032->clk, mt9v032->sysclk);
+        clk_prepare_enable(mt9v032->clk);
+        udelay(1);
 
         /* Reset the chip and stop data read out */
         ret = mt9v032_write(client, MT9V032_RESET, 1);
@@ -238,8 +240,7 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032)
 
 static void mt9v032_power_off(struct mt9v032 *mt9v032)
 {
-        if (mt9v032->pdata->set_clock)
-                mt9v032->pdata->set_clock(&mt9v032->subdev, 0);
+        clk_disable_unprepare(mt9v032->clk);
 }
 
 static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on)
@@ -748,6 +749,10 @@ static int mt9v032_probe(struct i2c_client *client,
         if (!mt9v032)
                 return -ENOMEM;
 
+        mt9v032->clk = devm_clk_get(&client->dev, NULL);
+        if (IS_ERR(mt9v032->clk))
+                return PTR_ERR(mt9v032->clk);
+
         mutex_init(&mt9v032->power_lock);
         mt9v032->pdata = pdata;
 
diff --git a/include/media/mt9v032.h b/include/media/mt9v032.h
index 78fd39eac219..12175a63c5b2 100644
--- a/include/media/mt9v032.h
+++ b/include/media/mt9v032.h
@@ -1,13 +1,9 @@
 #ifndef _MEDIA_MT9V032_H
 #define _MEDIA_MT9V032_H
 
-struct v4l2_subdev;
-
 struct mt9v032_platform_data {
         unsigned int clk_pol:1;
 
-        void (*set_clock)(struct v4l2_subdev *subdev, unsigned int rate);
-
         const s64 *link_freqs;
         s64 link_def_freq;
 };