[PATCH-V2,2/7] VPFE Capture: Add call back function for interrupt clear to vpfe_cfg

Commit Message

Vaibhav Hiremath March 19, 2010, 6:04 a.m. UTC

None

Patch

diff --git a/drivers/media/video/davinci/vpfe_capture.c b/drivers/media/video/davinci/vpfe_capture.c
index 885cd54..2219460 100644
--- a/drivers/media/video/davinci/vpfe_capture.c
+++ b/drivers/media/video/davinci/vpfe_capture.c
@@ -475,6 +475,11 @@  static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
 	ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev);
 	if (!ret)
 		vpfe_dev->initialized = 1;
+
+	/* Clear all VPFE/CCDC interrupts */
+	if (vpfe_dev->cfg->clr_intr)
+		vpfe_dev->cfg->clr_intr(-1);
+
 unlock:
 	mutex_unlock(&ccdc_lock);
 	return ret;
@@ -562,7 +567,7 @@  static irqreturn_t vpfe_isr(int irq, void *dev_id)

 	/* if streaming not started, don't do anything */
 	if (!vpfe_dev->started)
-		return IRQ_HANDLED;
+		goto clear_intr;

 	/* only for 6446 this will be applicable */
 	if (NULL != ccdc_dev->hw_ops.reset)
@@ -574,7 +579,7 @@  static irqreturn_t vpfe_isr(int irq, void *dev_id)
 			"frame format is progressive...\n");
 		if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
 			vpfe_process_buffer_complete(vpfe_dev);
-		return IRQ_HANDLED;
+		goto clear_intr;
 	}

 	/* interlaced or TB capture check which field we are in hardware */
@@ -604,7 +609,7 @@  static irqreturn_t vpfe_isr(int irq, void *dev_id)
 				addr += vpfe_dev->field_off;
 				ccdc_dev->hw_ops.setfbaddr(addr);
 			}
-			return IRQ_HANDLED;
+			goto clear_intr;
 		}
 		/*
 		 * if one field is just being captured configure
@@ -624,6 +629,10 @@  static irqreturn_t vpfe_isr(int irq, void *dev_id)
 		 */
 		vpfe_dev->field_id = fid;
 	}
+clear_intr:
+	if (vpfe_dev->cfg->clr_intr)
+		vpfe_dev->cfg->clr_intr(irq);
+
 	return IRQ_HANDLED;
 }

@@ -635,8 +644,11 @@  static irqreturn_t vdint1_isr(int irq, void *dev_id)
 	v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n");

 	/* if streaming not started, don't do anything */
-	if (!vpfe_dev->started)
+	if (!vpfe_dev->started) {
+		if (vpfe_dev->cfg->clr_intr)
+			vpfe_dev->cfg->clr_intr(irq);
 		return IRQ_HANDLED;
+	}

 	spin_lock(&vpfe_dev->dma_queue_lock);
 	if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
@@ -644,6 +656,10 @@  static irqreturn_t vdint1_isr(int irq, void *dev_id)
 	    vpfe_dev->cur_frm == vpfe_dev->next_frm)
 		vpfe_schedule_next_buffer(vpfe_dev);
 	spin_unlock(&vpfe_dev->dma_queue_lock);
+
+	if (vpfe_dev->cfg->clr_intr)
+		vpfe_dev->cfg->clr_intr(irq);
+
 	return IRQ_HANDLED;
 }

diff --git a/include/media/davinci/vpfe_capture.h b/include/media/davinci/vpfe_capture.h
index d863e5e..dc0dd5b 100644
--- a/include/media/davinci/vpfe_capture.h
+++ b/include/media/davinci/vpfe_capture.h
@@ -94,6 +94,8 @@  struct vpfe_config {
 	/* vpfe clock */
 	struct clk *vpssclk;
 	struct clk *slaveclk;
+	/* Function for Clearing the interrupt */
+	void (*clr_intr)(int vdint);
 };

 struct vpfe_device {