[media] media:davinci: clk - {prepare/unprepare} for common clk

As a first step towards migrating davinci platforms to use common clock
framework, replace all instances of clk_enable() with clk_prepare_enable()
and clk_disable() with clk_disable_unprepare().
Also fixes some issues related to clk clean up in the driver

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Acked-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Tested-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
index 69d7a58c92c3..7f5cf9b347b2 100644
--- a/drivers/media/platform/davinci/vpbe.c
+++ b/drivers/media/platform/davinci/vpbe.c
@@ -612,7 +612,7 @@ static int vpbe_initialize(struct device *dev, struct vpbe_device *vpbe_dev)
                         ret =  PTR_ERR(vpbe_dev->dac_clk);
                         goto fail_mutex_unlock;
                 }
-                if (clk_enable(vpbe_dev->dac_clk)) {
+                if (clk_prepare_enable(vpbe_dev->dac_clk)) {
                         ret =  -ENODEV;
                         goto fail_mutex_unlock;
                 }
@@ -759,8 +759,10 @@ fail_kfree_encoders:
 fail_dev_unregister:
         v4l2_device_unregister(&vpbe_dev->v4l2_dev);
 fail_clk_put:
-        if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0)
+        if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
+                clk_disable_unprepare(vpbe_dev->dac_clk);
                 clk_put(vpbe_dev->dac_clk);
+        }
 fail_mutex_unlock:
         mutex_unlock(&vpbe_dev->lock);
         return ret;
@@ -777,8 +779,10 @@ fail_mutex_unlock:
 static void vpbe_deinitialize(struct device *dev, struct vpbe_device *vpbe_dev)
 {
         v4l2_device_unregister(&vpbe_dev->v4l2_dev);
-        if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0)
+        if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
+                clk_disable_unprepare(vpbe_dev->dac_clk);
                 clk_put(vpbe_dev->dac_clk);
+        }
 
         kfree(vpbe_dev->amp);
         kfree(vpbe_dev->encoders);