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path: root/drivers/media/platform/vsp1/vsp1_drv.c
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Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_drv.c')
-rw-r--r--drivers/media/platform/vsp1/vsp1_drv.c40
1 files changed, 35 insertions, 5 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index aa8b9b288e61..1c9e771aa15c 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -290,6 +290,33 @@ static int vsp1_device_init(struct vsp1_device *vsp1)
return 0;
}
+static int vsp1_clocks_enable(struct vsp1_device *vsp1)
+{
+ int ret;
+
+ ret = clk_prepare_enable(vsp1->clock);
+ if (ret < 0)
+ return ret;
+
+ if (IS_ERR(vsp1->rt_clock))
+ return 0;
+
+ ret = clk_prepare_enable(vsp1->rt_clock);
+ if (ret < 0) {
+ clk_disable_unprepare(vsp1->clock);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void vsp1_clocks_disable(struct vsp1_device *vsp1)
+{
+ if (!IS_ERR(vsp1->rt_clock))
+ clk_disable_unprepare(vsp1->rt_clock);
+ clk_disable_unprepare(vsp1->clock);
+}
+
/*
* vsp1_device_get - Acquire the VSP1 device
*
@@ -307,7 +334,7 @@ struct vsp1_device *vsp1_device_get(struct vsp1_device *vsp1)
if (vsp1->ref_count > 0)
goto done;
- ret = clk_prepare_enable(vsp1->clock);
+ ret = vsp1_clocks_enable(vsp1);
if (ret < 0) {
__vsp1 = NULL;
goto done;
@@ -315,7 +342,7 @@ struct vsp1_device *vsp1_device_get(struct vsp1_device *vsp1)
ret = vsp1_device_init(vsp1);
if (ret < 0) {
- clk_disable_unprepare(vsp1->clock);
+ vsp1_clocks_disable(vsp1);
__vsp1 = NULL;
goto done;
}
@@ -339,7 +366,7 @@ void vsp1_device_put(struct vsp1_device *vsp1)
mutex_lock(&vsp1->lock);
if (--vsp1->ref_count == 0)
- clk_disable_unprepare(vsp1->clock);
+ vsp1_clocks_disable(vsp1);
mutex_unlock(&vsp1->lock);
}
@@ -358,7 +385,7 @@ static int vsp1_pm_suspend(struct device *dev)
if (vsp1->ref_count == 0)
return 0;
- clk_disable_unprepare(vsp1->clock);
+ vsp1_clocks_disable(vsp1);
return 0;
}
@@ -371,7 +398,7 @@ static int vsp1_pm_resume(struct device *dev)
if (vsp1->ref_count)
return 0;
- return clk_prepare_enable(vsp1->clock);
+ return vsp1_clocks_enable(vsp1);
}
#endif
@@ -445,6 +472,9 @@ static int vsp1_probe(struct platform_device *pdev)
return PTR_ERR(vsp1->clock);
}
+ /* The RT clock is optional */
+ vsp1->rt_clock = devm_clk_get(&pdev->dev, "rt");
+
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!irq) {
dev_err(&pdev->dev, "missing IRQ\n");