V4L/DVB: V4L: vpfe_capture: Add call back function for interrupt clear for vpfe_cfg

For the devices like AM3517, it is expected that driver clears the
interrupt in ISR. Since this is device spcific, callback function
added to the platform_data.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Muralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 20 insertions, 4 deletions

diff --git a/drivers/media/video/davinci/vpfe_capture.c b/drivers/media/video/davinci/vpfe_capture.c
index 398dbe71cb82..caeac199d15b 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;
 }