V4L/DVB (11046): bttv: convert to v4l2_device.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 45 insertions, 22 deletions

diff --git a/drivers/media/dvb/bt8xx/dvb-bt8xx.c b/drivers/media/dvb/bt8xx/dvb-bt8xx.c
index 48762a2b9e42..b1857c19bbd2 100644
--- a/drivers/media/dvb/bt8xx/dvb-bt8xx.c
+++ b/drivers/media/dvb/bt8xx/dvb-bt8xx.c
@@ -814,7 +814,7 @@ static int __devinit dvb_bt8xx_probe(struct bttv_sub_device *sub)
 
         mutex_init(&card->lock);
         card->bttv_nr = sub->core->nr;
-        strncpy(card->card_name, sub->core->name, sizeof(sub->core->name));
+        strlcpy(card->card_name, sub->core->v4l2_dev.name, sizeof(card->card_name));
         card->i2c_adapter = &sub->core->i2c_adap;
 
         switch(sub->core->type) {
diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index b5fc3cc61888..3079d925e4cf 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -167,7 +167,7 @@ static ssize_t show_card(struct device *cd,
                          struct device_attribute *attr, char *buf)
 {
         struct video_device *vfd = container_of(cd, struct video_device, dev);
-        struct bttv *btv = dev_get_drvdata(vfd->parent);
+        struct bttv *btv = video_get_drvdata(vfd);
         return sprintf(buf, "%d\n", btv ? btv->c.type : UNSET);
 }
 static DEVICE_ATTR(card, S_IRUGO, show_card, NULL);
@@ -3692,14 +3692,14 @@ static void bttv_risc_disasm(struct bttv *btv,
         unsigned int i,j,n;
 
         printk("%s: risc disasm: %p [dma=0x%08lx]\n",
-               btv->c.name, risc->cpu, (unsigned long)risc->dma);
+               btv->c.v4l2_dev.name, risc->cpu, (unsigned long)risc->dma);
         for (i = 0; i < (risc->size >> 2); i += n) {
-                printk("%s:   0x%lx: ", btv->c.name,
+                printk("%s:   0x%lx: ", btv->c.v4l2_dev.name,
                        (unsigned long)(risc->dma + (i<<2)));
                 n = bttv_risc_decode(le32_to_cpu(risc->cpu[i]));
                 for (j = 1; j < n; j++)
                         printk("%s:   0x%lx: 0x%08x [ arg #%d ]\n",
-                               btv->c.name, (unsigned long)(risc->dma + ((i+j)<<2)),
+                               btv->c.v4l2_dev.name, (unsigned long)(risc->dma + ((i+j)<<2)),
                                risc->cpu[i+j], j);
                 if (0 == risc->cpu[i])
                         break;
@@ -4175,7 +4175,7 @@ static struct video_device *vdev_init(struct bttv *btv,
                 return NULL;
         *vfd = *template;
         vfd->minor   = -1;
-        vfd->parent  = &btv->c.pci->dev;
+        vfd->v4l2_dev = &btv->c.v4l2_dev;
         vfd->release = video_device_release;
         vfd->debug   = bttv_debug;
         video_set_drvdata(vfd, btv);
@@ -4289,8 +4289,13 @@ static int __devinit bttv_probe(struct pci_dev *dev,
                 return -ENOMEM;
         printk(KERN_INFO "bttv: Bt8xx card found (%d).\n", bttv_num);
         bttvs[bttv_num] = btv = kzalloc(sizeof(*btv), GFP_KERNEL);
+        if (btv == NULL) {
+                printk(KERN_ERR "bttv: out of memory.\n");
+                return -ENOMEM;
+        }
         btv->c.nr  = bttv_num;
-        sprintf(btv->c.name,"bttv%d",btv->c.nr);
+        snprintf(btv->c.v4l2_dev.name, sizeof(btv->c.v4l2_dev.name),
+                        "bttv%d", btv->c.nr);
 
         /* initialize structs / fill in defaults */
         mutex_init(&btv->lock);
@@ -4327,7 +4332,7 @@ static int __devinit bttv_probe(struct pci_dev *dev,
         }
         if (!request_mem_region(pci_resource_start(dev,0),
                                 pci_resource_len(dev,0),
-                                btv->c.name)) {
+                                btv->c.v4l2_dev.name)) {
                 printk(KERN_WARNING "bttv%d: can't request iomem (0x%llx).\n",
                        btv->c.nr,
                        (unsigned long long)pci_resource_start(dev,0));
@@ -4335,7 +4340,12 @@ static int __devinit bttv_probe(struct pci_dev *dev,
         }
         pci_set_master(dev);
         pci_set_command(dev);
-        pci_set_drvdata(dev,btv);
+
+        result = v4l2_device_register(&dev->dev, &btv->c.v4l2_dev);
+        if (result < 0) {
+                printk(KERN_WARNING "bttv%d: v4l2_device_register() failed\n", btv->c.nr);
+                goto fail0;
+        }
 
         pci_read_config_byte(dev, PCI_CLASS_REVISION, &btv->revision);
         pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
@@ -4359,7 +4369,7 @@ static int __devinit bttv_probe(struct pci_dev *dev,
         /* disable irqs, register irq handler */
         btwrite(0, BT848_INT_MASK);
         result = request_irq(btv->c.pci->irq, bttv_irq,
-                             IRQF_SHARED | IRQF_DISABLED,btv->c.name,(void *)btv);
+            IRQF_SHARED | IRQF_DISABLED, btv->c.v4l2_dev.name, (void *)btv);
         if (result < 0) {
                 printk(KERN_ERR "bttv%d: can't get IRQ %d\n",
                        bttv_num,btv->c.pci->irq);
@@ -4443,21 +4453,24 @@ static int __devinit bttv_probe(struct pci_dev *dev,
         bttv_num++;
         return 0;
 
- fail2:
+fail2:
         free_irq(btv->c.pci->irq,btv);
 
- fail1:
+fail1:
+        v4l2_device_unregister(&btv->c.v4l2_dev);
+
+fail0:
         if (btv->bt848_mmio)
                 iounmap(btv->bt848_mmio);
         release_mem_region(pci_resource_start(btv->c.pci,0),
                            pci_resource_len(btv->c.pci,0));
-        pci_set_drvdata(dev,NULL);
         return result;
 }
 
 static void __devexit bttv_remove(struct pci_dev *pci_dev)
 {
-        struct bttv *btv = pci_get_drvdata(pci_dev);
+        struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
+        struct bttv *btv = to_bttv(v4l2_dev);
 
         if (bttv_verbose)
                 printk("bttv%d: unloading\n",btv->c.nr);
@@ -4491,7 +4504,7 @@ static void __devexit bttv_remove(struct pci_dev *pci_dev)
         release_mem_region(pci_resource_start(btv->c.pci,0),
                            pci_resource_len(btv->c.pci,0));
 
-        pci_set_drvdata(pci_dev, NULL);
+        v4l2_device_unregister(&btv->c.v4l2_dev);
         bttvs[btv->c.nr] = NULL;
         kfree(btv);
 
@@ -4501,7 +4514,8 @@ static void __devexit bttv_remove(struct pci_dev *pci_dev)
 #ifdef CONFIG_PM
 static int bttv_suspend(struct pci_dev *pci_dev, pm_message_t state)
 {
-        struct bttv *btv = pci_get_drvdata(pci_dev);
+        struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
+        struct bttv *btv = to_bttv(v4l2_dev);
         struct bttv_buffer_set idle;
         unsigned long flags;
 
@@ -4536,7 +4550,8 @@ static int bttv_suspend(struct pci_dev *pci_dev, pm_message_t state)
 
 static int bttv_resume(struct pci_dev *pci_dev)
 {
-        struct bttv *btv = pci_get_drvdata(pci_dev);
+        struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
+        struct bttv *btv = to_bttv(v4l2_dev);
         unsigned long flags;
         int err;
 
diff --git a/drivers/media/video/bt8xx/bttv-i2c.c b/drivers/media/video/bt8xx/bttv-i2c.c
index 511d2bf176f1..9b66c5b09321 100644
--- a/drivers/media/video/bt8xx/bttv-i2c.c
+++ b/drivers/media/video/bt8xx/bttv-i2c.c
@@ -231,7 +231,8 @@ bttv_i2c_readbytes(struct bttv *btv, const struct i2c_msg *msg, int last)
 
 static int bttv_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
 {
-        struct bttv *btv = i2c_get_adapdata(i2c_adap);
+        struct v4l2_device *v4l2_dev = i2c_get_adapdata(i2c_adap);
+        struct bttv *btv = to_bttv(v4l2_dev);
         int retval = 0;
         int i;
 
@@ -267,7 +268,8 @@ static const struct i2c_algorithm bttv_algo = {
 
 static int attach_inform(struct i2c_client *client)
 {
-        struct bttv *btv = i2c_get_adapdata(client->adapter);
+        struct v4l2_device *v4l2_dev = i2c_get_adapdata(client->adapter);
+        struct bttv *btv = to_bttv(v4l2_dev);
         int addr=ADDR_UNSET;
 
 
@@ -423,7 +425,7 @@ int __devinit init_bttv_i2c(struct bttv *btv)
                  "bt%d #%d [%s]", btv->id, btv->c.nr,
                  btv->use_i2c_hw ? "hw" : "sw");
 
-        i2c_set_adapdata(&btv->c.i2c_adap, btv);
+        i2c_set_adapdata(&btv->c.i2c_adap, &btv->c.v4l2_dev);
         btv->i2c_client.adapter = &btv->c.i2c_adap;
 
         if (bttv_tvcards[btv->c.type].no_video)
@@ -439,7 +441,7 @@ int __devinit init_bttv_i2c(struct bttv *btv)
                 btv->i2c_rc = i2c_bit_add_bus(&btv->c.i2c_adap);
         }
         if (0 == btv->i2c_rc && i2c_scan)
-                do_i2c_scan(btv->c.name,&btv->i2c_client);
+                do_i2c_scan(btv->c.v4l2_dev.name, &btv->i2c_client);
         return btv->i2c_rc;
 }
 
diff --git a/drivers/media/video/bt8xx/bttv.h b/drivers/media/video/bt8xx/bttv.h
index e08719b378bd..85b0e3e9d382 100644
--- a/drivers/media/video/bt8xx/bttv.h
+++ b/drivers/media/video/bt8xx/bttv.h
@@ -16,6 +16,7 @@
 
 #include <linux/videodev2.h>
 #include <linux/i2c.h>
+#include <media/v4l2-device.h>
 #include <media/ir-common.h>
 #include <media/ir-kbd-i2c.h>
 #include <media/i2c-addr.h>
@@ -196,6 +197,7 @@
 
 struct bttv_core {
         /* device structs */
+        struct v4l2_device   v4l2_dev;
         struct pci_dev       *pci;
         struct i2c_adapter   i2c_adap;
         struct list_head     subs;     /* struct bttv_sub_device */
@@ -203,7 +205,6 @@ struct bttv_core {
         /* device config */
         unsigned int         nr;       /* dev nr (for printk("bttv%d: ...");  */
         unsigned int         type;     /* card type (pointer into tvcards[])  */
-        char                 name[8];  /* dev name */
 };
 
 struct bttv;
diff --git a/drivers/media/video/bt8xx/bttvp.h b/drivers/media/video/bt8xx/bttvp.h
index 2c0a2cc61d03..5755b407c0a2 100644
--- a/drivers/media/video/bt8xx/bttvp.h
+++ b/drivers/media/video/bt8xx/bttvp.h
@@ -458,6 +458,11 @@ struct bttv {
         __s32                   crop_start;
 };
 
+static inline struct bttv *to_bttv(struct v4l2_device *v4l2_dev)
+{
+        return container_of(v4l2_dev, struct bttv, c.v4l2_dev);
+}
+
 /* our devices */
 #define BTTV_MAX 32
 extern unsigned int bttv_num;