[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>

5 files changed, 31 insertions, 16 deletions

diff --git a/drivers/media/platform/davinci/dm355_ccdc.c b/drivers/media/platform/davinci/dm355_ccdc.c
index ce0e4131c067..030950dcfb16 100644
--- a/drivers/media/platform/davinci/dm355_ccdc.c
+++ b/drivers/media/platform/davinci/dm355_ccdc.c
@@ -1003,7 +1003,7 @@ static int __devinit dm355_ccdc_probe(struct platform_device *pdev)
                 status = PTR_ERR(ccdc_cfg.mclk);
                 goto fail_nomap;
         }
-        if (clk_enable(ccdc_cfg.mclk)) {
+        if (clk_prepare_enable(ccdc_cfg.mclk)) {
                 status = -ENODEV;
                 goto fail_mclk;
         }
@@ -1014,7 +1014,7 @@ static int __devinit dm355_ccdc_probe(struct platform_device *pdev)
                 status = PTR_ERR(ccdc_cfg.sclk);
                 goto fail_mclk;
         }
-        if (clk_enable(ccdc_cfg.sclk)) {
+        if (clk_prepare_enable(ccdc_cfg.sclk)) {
                 status = -ENODEV;
                 goto fail_sclk;
         }
@@ -1034,8 +1034,10 @@ static int __devinit dm355_ccdc_probe(struct platform_device *pdev)
         printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
         return 0;
 fail_sclk:
+        clk_disable_unprepare(ccdc_cfg.sclk);
         clk_put(ccdc_cfg.sclk);
 fail_mclk:
+        clk_disable_unprepare(ccdc_cfg.mclk);
         clk_put(ccdc_cfg.mclk);
 fail_nomap:
         iounmap(ccdc_cfg.base_addr);
@@ -1050,6 +1052,8 @@ static int dm355_ccdc_remove(struct platform_device *pdev)
 {
         struct resource *res;
 
+        clk_disable_unprepare(ccdc_cfg.sclk);
+        clk_disable_unprepare(ccdc_cfg.mclk);
         clk_put(ccdc_cfg.mclk);
         clk_put(ccdc_cfg.sclk);
         iounmap(ccdc_cfg.base_addr);
diff --git a/drivers/media/platform/davinci/dm644x_ccdc.c b/drivers/media/platform/davinci/dm644x_ccdc.c
index ee7942b1996e..0215ab6ebc90 100644
--- a/drivers/media/platform/davinci/dm644x_ccdc.c
+++ b/drivers/media/platform/davinci/dm644x_ccdc.c
@@ -994,7 +994,7 @@ static int __devinit dm644x_ccdc_probe(struct platform_device *pdev)
                 status = PTR_ERR(ccdc_cfg.mclk);
                 goto fail_nomap;
         }
-        if (clk_enable(ccdc_cfg.mclk)) {
+        if (clk_prepare_enable(ccdc_cfg.mclk)) {
                 status = -ENODEV;
                 goto fail_mclk;
         }
@@ -1005,7 +1005,7 @@ static int __devinit dm644x_ccdc_probe(struct platform_device *pdev)
                 status = PTR_ERR(ccdc_cfg.sclk);
                 goto fail_mclk;
         }
-        if (clk_enable(ccdc_cfg.sclk)) {
+        if (clk_prepare_enable(ccdc_cfg.sclk)) {
                 status = -ENODEV;
                 goto fail_sclk;
         }
@@ -1013,8 +1013,10 @@ static int __devinit dm644x_ccdc_probe(struct platform_device *pdev)
         printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
         return 0;
 fail_sclk:
+        clk_disable_unprepare(ccdc_cfg.sclk);
         clk_put(ccdc_cfg.sclk);
 fail_mclk:
+        clk_disable_unprepare(ccdc_cfg.mclk);
         clk_put(ccdc_cfg.mclk);
 fail_nomap:
         iounmap(ccdc_cfg.base_addr);
@@ -1029,6 +1031,8 @@ static int dm644x_ccdc_remove(struct platform_device *pdev)
 {
         struct resource *res;
 
+        clk_disable_unprepare(ccdc_cfg.mclk);
+        clk_disable_unprepare(ccdc_cfg.sclk);
         clk_put(ccdc_cfg.mclk);
         clk_put(ccdc_cfg.sclk);
         iounmap(ccdc_cfg.base_addr);
@@ -1046,8 +1050,8 @@ static int dm644x_ccdc_suspend(struct device *dev)
         /* Disable CCDC */
         ccdc_enable(0);
         /* Disable both master and slave clock */
-        clk_disable(ccdc_cfg.mclk);
-        clk_disable(ccdc_cfg.sclk);
+        clk_disable_unprepare(ccdc_cfg.mclk);
+        clk_disable_unprepare(ccdc_cfg.sclk);
 
         return 0;
 }
@@ -1055,8 +1059,8 @@ static int dm644x_ccdc_suspend(struct device *dev)
 static int dm644x_ccdc_resume(struct device *dev)
 {
         /* Enable both master and slave clock */
-        clk_enable(ccdc_cfg.mclk);
-        clk_enable(ccdc_cfg.sclk);
+        clk_prepare_enable(ccdc_cfg.mclk);
+        clk_prepare_enable(ccdc_cfg.sclk);
         /* Restore CCDC context */
         ccdc_restore_context();
 
diff --git a/drivers/media/platform/davinci/isif.c b/drivers/media/platform/davinci/isif.c
index b99d5423e3a8..2c26c3e1837e 100644
--- a/drivers/media/platform/davinci/isif.c
+++ b/drivers/media/platform/davinci/isif.c
@@ -1053,7 +1053,7 @@ static int __devinit isif_probe(struct platform_device *pdev)
                 status = PTR_ERR(isif_cfg.mclk);
                 goto fail_mclk;
         }
-        if (clk_enable(isif_cfg.mclk)) {
+        if (clk_prepare_enable(isif_cfg.mclk)) {
                 status = -ENODEV;
                 goto fail_mclk;
         }
@@ -1125,6 +1125,7 @@ fail_nobase_res:
                 i--;
         }
 fail_mclk:
+        clk_disable_unprepare(isif_cfg.mclk);
         clk_put(isif_cfg.mclk);
         vpfe_unregister_ccdc_device(&isif_hw_dev);
         return status;
@@ -1145,6 +1146,8 @@ static int isif_remove(struct platform_device *pdev)
                 i++;
         }
         vpfe_unregister_ccdc_device(&isif_hw_dev);
+        clk_disable_unprepare(isif_cfg.mclk);
+        clk_put(isif_cfg.mclk);
         return 0;
 }
 
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);
diff --git a/drivers/media/platform/davinci/vpif.c b/drivers/media/platform/davinci/vpif.c
index cff3c0ab501f..0d6cc8e4deb2 100644
--- a/drivers/media/platform/davinci/vpif.c
+++ b/drivers/media/platform/davinci/vpif.c
@@ -444,7 +444,7 @@ static int __devinit vpif_probe(struct platform_device *pdev)
                 status = PTR_ERR(vpif_clk);
                 goto clk_fail;
         }
-        clk_enable(vpif_clk);
+        clk_prepare_enable(vpif_clk);
 
         spin_lock_init(&vpif_lock);
         dev_info(&pdev->dev, "vpif probe success\n");
@@ -460,7 +460,7 @@ fail:
 static int __devexit vpif_remove(struct platform_device *pdev)
 {
         if (vpif_clk) {
-                clk_disable(vpif_clk);
+                clk_disable_unprepare(vpif_clk);
                 clk_put(vpif_clk);
         }
 
@@ -472,13 +472,13 @@ static int __devexit vpif_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM
 static int vpif_suspend(struct device *dev)
 {
-        clk_disable(vpif_clk);
+        clk_disable_unprepare(vpif_clk);
         return 0;
 }
 
 static int vpif_resume(struct device *dev)
 {
-        clk_enable(vpif_clk);
+        clk_prepare_enable(vpif_clk);
         return 0;
 }