[media] saa7164: mundane buffer debugging changes to track issues

Code is removed in future patches in this set.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/saa7164/saa7164-buffer.c

@@ -241,6 +241,7 @@ int saa7164_buffer_cfg_port(struct saa7164_port *port)
 
 	dprintk(DBGLVL_BUF, "%s(port=%d)\n", __func__, port->nr);
 
+	port->counter = 0;
 	saa7164_writel(port->bufcounter, 0);
 	saa7164_writel(port->pitch, params->pitch);
 	saa7164_writel(port->bufsize, params->pitch * params->numberoflines);

drivers/media/video/saa7164/saa7164-core.c

@@ -316,9 +316,9 @@ static void saa7164_work_enchandler(struct work_struct *w)
 		if (buf->idx == rp) {
 
 			crc = crc32(0, buf->cpu, buf->actual_size);
-			if (crc != port->shadow_crc[rp])
-				printk(KERN_ERR "%s crc didn't match shadow was 0x%x now 0x%x\n",
-					__func__, port->shadow_crc[rp], crc);
+//			if (crc != port->shadow_crc[rp])
+//				printk(KERN_ERR "%s crc didn't match shadow was 0x%x now 0x%x\n",
+//					__func__, port->shadow_crc[rp], crc);
 
 			/* Found the buffer, deal with it */
 			dprintk(DBGLVL_IRQ, "%s() wp: %d processing: %d crc32: 0x%x\n",
@@ -350,12 +350,6 @@ static void saa7164_work_enchandler(struct work_struct *w)
 					else
 						ok = 0;
 
-					if (ok == 0)
-						printk(KERN_ERR
-							"rp: %d dmacrc: 0x%08x shadcrc: 0x%08x ubufcrc: 0x%08x %s\n",
-							rp, buf->crc, port->shadow_crc[rp], ubuf->crc,
-							ok ? "crcgood" : "crcbad");
-
 					/* Requeue the buffer on the free list */
 					ubuf->pos = 0;
 
@@ -430,6 +424,7 @@ static irqreturn_t saa7164_irq_encoder(struct saa7164_port *port)
 	struct list_head *c, *n;
 	int wp, rp, i = 0;
 	u8 *p;
+	u32 *up, j;
 
 	/* Find the current write point from the hardware */
 	wp = saa7164_readl(port->bufcounter);
@@ -438,6 +433,8 @@ static irqreturn_t saa7164_irq_encoder(struct saa7164_port *port)
 		return 0;
 	}
 
+	printk(KERN_ERR "port %p wp = %d\n", port, wp);
+
 	/* Find the previous buffer to the current write point */
 	if (wp == 0)
 		rp = 7;
@@ -449,6 +446,11 @@ static irqreturn_t saa7164_irq_encoder(struct saa7164_port *port)
 		return 0;
 	}
 
+	if (rp == port->last_irq_rp) {
+		printk(KERN_ERR "%s() Duplicate rp = %d port %p\n",
+			__func__, rp, port);
+	}
+
 	if (rp != ((port->last_irq_rp + 1) % 8)) {
 		printk(KERN_ERR "%s() Multiple bufs on interrupt, port %p\n",
 			__func__, port);
@@ -503,16 +505,17 @@ static irqreturn_t saa7164_irq_encoder(struct saa7164_port *port)
 		}
 
 		if (buf->idx == rp) {
-
-			memcpy_fromio(port->shadow_buf[rp], buf->cpu, buf->actual_size);
-
+			up = (u32 *)port->shadow_buf[rp];
+			for (j = 0 ; j < (buf->actual_size / sizeof(u32)); j++) {
+				*(up + j) = (rp << 28) | port->counter++;
+			}
 			port->shadow_crc[rp] = crc32(0, port->shadow_buf[rp], buf->actual_size);
 
 			buf->crc = crc32(0, buf->cpu, buf->actual_size);
 
-			if (port->shadow_crc[rp] != buf->crc)
-				printk(KERN_ERR "%s() crc check failed 0x%x vs 0x%x\n",
-					__func__, port->shadow_crc[rp], buf->crc);
+//			if (port->shadow_crc[rp] != buf->crc)
+//				printk(KERN_ERR "%s() crc check failed 0x%x vs 0x%x\n",
+//					__func__, port->shadow_crc[rp], buf->crc);
 			break;
 		}
 

drivers/media/video/saa7164/saa7164-encoder.c

@@ -1008,6 +1008,7 @@ struct saa7164_user_buffer *saa7164_enc_next_buf(struct saa7164_port *port)
 	struct saa7164_user_buffer *buf = 0;
 	struct saa7164_dev *dev = port->dev;
 	u32 crc;
+	u32 *d;
 
 	mutex_lock(&port->dmaqueue_lock);
 	if (!list_empty(&port->list_buf_used.list)) {
@@ -1020,6 +1021,13 @@ struct saa7164_user_buffer *saa7164_enc_next_buf(struct saa7164_port *port)
 				buf, buf->crc, crc);
 		}
 
+		d = (u32 *)buf->data;
+
+		if ((*d & 0xffffff) > (port->read_counter + 0x2000))
+			printk(KERN_ERR "%s() *d 0x%x port %p\n", __func__, *d, port);
+
+		port->read_counter = *d;
+
 	}
 	mutex_unlock(&port->dmaqueue_lock);
 

drivers/media/video/saa7164/saa7164.h

@@ -395,7 +395,8 @@ struct saa7164_port {
 	u8 *shadow_buf[8];
 	u32 shadow_crc[8];
 
-	u32 dvd_pack_offset;
+	u32 counter;
+	u32 read_counter;
 };
 
 struct saa7164_dev {