V4L/DVB (10281): cx18: Conversion to new V4L2 framework: use v4l2_device object

First step in conversion to the new V4L2 framework.  Added per cx18 device
instance of the v4l2_device and its registration.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 19 insertions, 7 deletions

diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 52d04f640b73..450c48dd995a 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -797,21 +797,28 @@ static int __devinit cx18_probe(struct pci_dev *pci_dev,
                 return -ENOMEM;
         }
         cx18_cards[cx18_cards_active] = cx;
-        cx->pci_dev = pci_dev;
         cx->num = cx18_cards_active++;
         snprintf(cx->name, sizeof(cx->name), "cx18-%d", cx->num);
         CX18_INFO("Initializing card #%d\n", cx->num);
 
         spin_unlock(&cx18_cards_lock);
 
+        cx->pci_dev = pci_dev;
+        retval = v4l2_device_register(&pci_dev->dev, &cx->v4l2_dev);
+        if (retval) {
+                CX18_ERR("Call to v4l2_device_register() failed\n");
+                goto err;
+        }
+        CX18_DEBUG_INFO("registered v4l2_device name: %s\n", cx->v4l2_dev.name);
+
         cx18_process_options(cx);
         if (cx->options.cardtype == -1) {
                 retval = -ENODEV;
-                goto err;
+                goto unregister_v4l2;
         }
         if (cx18_init_struct1(cx)) {
                 retval = -ENOMEM;
-                goto err;
+                goto unregister_v4l2;
         }
 
         CX18_DEBUG_INFO("base addr: 0x%08x\n", cx->base_addr);
@@ -821,9 +828,6 @@ static int __devinit cx18_probe(struct pci_dev *pci_dev,
         if (retval != 0)
                 goto free_workqueue;
 
-        /* save cx in the pci struct for later use */
-        pci_set_drvdata(pci_dev, cx);
-
         /* map io memory */
         CX18_DEBUG_INFO("attempting ioremap at 0x%08x len 0x%08x\n",
                    cx->base_addr + CX18_MEM_OFFSET, CX18_MEM_SIZE);
@@ -1002,6 +1006,8 @@ free_mem:
         release_mem_region(cx->base_addr, CX18_MEM_SIZE);
 free_workqueue:
         destroy_workqueue(cx->work_queue);
+unregister_v4l2:
+        v4l2_device_unregister(&cx->v4l2_dev);
 err:
         if (retval == 0)
                 retval = -ENODEV;
@@ -1106,7 +1112,8 @@ static void cx18_cancel_epu_work_orders(struct cx18 *cx)
 
 static void cx18_remove(struct pci_dev *pci_dev)
 {
-        struct cx18 *cx = pci_get_drvdata(pci_dev);
+        struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
+        struct cx18 *cx = container_of(v4l2_dev, struct cx18, v4l2_dev);
 
         CX18_DEBUG_INFO("Removing Card #%d\n", cx->num);
 
@@ -1137,6 +1144,8 @@ static void cx18_remove(struct pci_dev *pci_dev)
 
         pci_disable_device(cx->pci_dev);
 
+        v4l2_device_unregister(v4l2_dev);
+
         CX18_INFO("Removed %s, card #%d\n", cx->card_name, cx->num);
 }
 
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index 316ff333d4a5..2d5bcbf1b236 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -48,6 +48,7 @@
 #include <linux/dvb/audio.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
 #include <media/tuner.h>
 #include "cx18-mailbox.h"
 #include "cx18-av-core.h"
@@ -386,6 +387,8 @@ struct cx18 {
         int num;                /* board number, -1 during init! */
         char name[8];           /* board name for printk and interrupts (e.g. 'cx180') */
         struct pci_dev *pci_dev;
+        struct v4l2_device v4l2_dev;
+
         const struct cx18_card *card;   /* card information */
         const char *card_name;  /* full name of the card */
         const struct cx18_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */