V4L/DVB (3344c): Pci probing for stradis driver

- Pci probing functions added, some functions were rewritten.

- Use PCI_DEVICE macro.

- dev_ used for printing when pci_dev available.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 113 insertions, 84 deletions

diff --git a/drivers/media/video/stradis.c b/drivers/media/video/stradis.c
index 6ee54a45411f..ad6646c7da03 100644
--- a/drivers/media/video/stradis.c
+++ b/drivers/media/video/stradis.c
@@ -1991,12 +1991,10 @@ static struct video_device saa_template =
         .minor          = -1,
 };
 
-static int configure_saa7146(struct pci_dev *dev, int num)
+static int __devinit configure_saa7146(struct pci_dev *pdev, int num)
 {
         int result;
-        struct saa7146 *saa;
-
-        saa = &saa7146s[num];
+        struct saa7146 *saa = &saa7146s[num];
         
         saa->endmarkhead = saa->endmarktail = 0;
         saa->win.x = saa->win.y = 0;
@@ -2013,7 +2011,6 @@ static int configure_saa7146(struct pci_dev *dev, int num)
         saa->picture.contrast = 38768;
         saa->picture.colour = 32768;
         saa->cap = 0;
-        saa->dev = dev;
         saa->nr = num;
         saa->playmode = VID_PLAY_NORMAL;
         memset(saa->boardcfg, 0, 64);   /* clear board config area */
@@ -2033,14 +2030,14 @@ static int configure_saa7146(struct pci_dev *dev, int num)
         init_waitqueue_head(&saa->vidq);
         spin_lock_init(&saa->lock);
 
-        if (pci_enable_device(dev))
+        if (pci_enable_device(pdev))
                 return -EIO;
         
-        saa->id = dev->device;
-        saa->irq = dev->irq;
+        saa->id = pdev->device;
+        saa->irq = pdev->irq;
         saa->video_dev.minor = -1;
-        saa->saa7146_adr = pci_resource_start(dev, 0);
-        pci_read_config_byte(dev, PCI_CLASS_REVISION, &saa->revision);
+        saa->saa7146_adr = pci_resource_start(pdev, 0);
+        pci_read_config_byte(pdev, PCI_CLASS_REVISION, &saa->revision);
 
         saa->saa7146_mem = ioremap(saa->saa7146_adr, 0x200);
         if (!saa->saa7146_mem)
@@ -2051,16 +2048,15 @@ static int configure_saa7146(struct pci_dev *dev, int num)
         result = request_irq(saa->irq, saa7146_irq,
                        SA_SHIRQ | SA_INTERRUPT, "stradis", (void *) saa);
         if (result == -EINVAL)
-                printk(KERN_ERR "stradis%d: Bad irq number or handler\n",
-                       num);
+                dev_err(&pdev->dev, "%d: Bad irq number or handler\n", num);
         if (result == -EBUSY)
-                printk(KERN_ERR "stradis%d: IRQ %ld busy, change your PnP"
-                       " config in BIOS\n", num, saa->irq);
+                dev_err(&pdev->dev, "%d: IRQ %ld busy, change your PnP config "
+                        "in BIOS\n", num, saa->irq);
         if (result < 0) {
                 iounmap(saa->saa7146_mem);
                 return result;
         }
-        pci_set_master(dev);
+        pci_set_master(pdev);
         if (video_register_device(&saa->video_dev, VFL_TYPE_GRABBER, video_nr) < 0) {
                 iounmap(saa->saa7146_mem);
                 return -1;
@@ -2068,10 +2064,11 @@ static int configure_saa7146(struct pci_dev *dev, int num)
         return 0;
 }
 
-static int init_saa7146(int i)
+static int __devinit init_saa7146(int i, struct device *dev)
 {
         struct saa7146 *saa = &saa7146s[i];
 
+        memset(saa, 0, sizeof(*saa));
         saa->user = 0;
         /* reset the saa7146 */
         saawrite(0xffff0000, SAA7146_MC1);
@@ -2104,7 +2101,7 @@ static int init_saa7146(int i)
 
         /* allocate 32k dma buffer + 4k for page table */
         if ((saa->dmadebi = kmalloc(32768 + 4096, GFP_KERNEL)) == NULL) {
-                printk(KERN_ERR "stradis%d: debi kmalloc failed\n", i);
+                dev_err(dev, "%d: debi kmalloc failed\n", i);
                 return -1;
         }
 #if 0
@@ -2117,19 +2114,19 @@ static int init_saa7146(int i)
         saa->audtail = saa->vidtail = saa->osdtail = 0;
         if (saa->vidbuf == NULL)
                 if ((saa->vidbuf = vmalloc(524288)) == NULL) {
-                        printk(KERN_ERR "stradis%d: malloc failed\n", saa->nr);
+                        dev_err(dev, "%d: malloc failed\n", saa->nr);
                         return -ENOMEM;
                 }
         if (saa->audbuf == NULL)
                 if ((saa->audbuf = vmalloc(65536)) == NULL) {
-                        printk(KERN_ERR "stradis%d: malloc failed\n", saa->nr);
+                        dev_err(dev, "%d: malloc failed\n", saa->nr);
                         vfree(saa->vidbuf);
                         saa->vidbuf = NULL;
                         return -ENOMEM;
                 }
         if (saa->osdbuf == NULL)
                 if ((saa->osdbuf = vmalloc(131072)) == NULL) {
-                        printk(KERN_ERR "stradis%d: malloc failed\n", saa->nr);
+                        dev_err(dev, "%d: malloc failed\n", saa->nr);
                         vfree(saa->vidbuf);
                         vfree(saa->audbuf);
                         saa->vidbuf = saa->audbuf = NULL;
@@ -2137,7 +2134,7 @@ static int init_saa7146(int i)
                 }
         /* allocate 81920 byte buffer for clipping */
         if ((saa->dmavid2 = kmalloc(VIDEO_CLIPMAP_SIZE, GFP_KERNEL)) == NULL) {
-                printk(KERN_ERR "stradis%d: clip kmalloc failed\n", saa->nr);
+                dev_err(dev, "%d: clip kmalloc failed\n", saa->nr);
                 vfree(saa->vidbuf);
                 vfree(saa->audbuf);
                 vfree(saa->osdbuf);
@@ -2159,89 +2156,121 @@ static int init_saa7146(int i)
         return 0;
 }
 
-static void release_saa(void)
+static void stradis_release_saa(struct pci_dev *pdev)
 {
         u8 command;
-        int i;
-        struct saa7146 *saa;
+        int i = (int)pci_get_drvdata(pdev);
+        struct saa7146 *saa = &saa7146s[i];
 
-        for (i = 0; i < saa_num; i++) {
-                saa = &saa7146s[i];
+        /* turn off all capturing, DMA and IRQs */
+        saawrite(0xffff0000, SAA7146_MC1);      /* reset chip */
+        saawrite(0, SAA7146_MC2);
+        saawrite(0, SAA7146_IER);
+        saawrite(0xffffffffUL, SAA7146_ISR);
+
+        /* disable PCI bus-mastering */
+        pci_read_config_byte(pdev, PCI_COMMAND, &command);
+        command &= ~PCI_COMMAND_MASTER;
+        pci_write_config_byte(pdev, PCI_COMMAND, command);
+
+        /* unmap and free memory */
+        saa->audhead = saa->audtail = saa->osdhead = 0;
+        saa->vidhead = saa->vidtail = saa->osdtail = 0;
+        vfree(saa->vidbuf);
+        vfree(saa->audbuf);
+        vfree(saa->osdbuf);
+        kfree(saa->dmavid2);
+        saa->audbuf = saa->vidbuf = saa->osdbuf = NULL;
+        saa->dmavid2 = NULL;
+        kfree(saa->dmadebi);
+        kfree(saa->dmavid1);
+        kfree(saa->dmavid3);
+        kfree(saa->dmaa1in);
+        kfree(saa->dmaa1out);
+        kfree(saa->dmaa2in);
+        kfree(saa->dmaa2out);
+        kfree(saa->dmaRPS1);
+        kfree(saa->dmaRPS2);
+        free_irq(saa->irq, saa);
+        if (saa->saa7146_mem)
+                iounmap(saa->saa7146_mem);
+        if (saa->video_dev.minor != -1)
+                video_unregister_device(&saa->video_dev);
+}
 
-                /* turn off all capturing, DMA and IRQs */
-                saawrite(0xffff0000, SAA7146_MC1);      /* reset chip */
-                saawrite(0, SAA7146_MC2);
-                saawrite(0, SAA7146_IER);
-                saawrite(0xffffffffUL, SAA7146_ISR);
+static int __devinit stradis_probe(struct pci_dev *pdev,
+        const struct pci_device_id *ent)
+{
+        int retval = -EINVAL;
 
-                /* disable PCI bus-mastering */
-                pci_read_config_byte(saa->dev, PCI_COMMAND, &command);
-                command &= ~PCI_COMMAND_MASTER;
-                pci_write_config_byte(saa->dev, PCI_COMMAND, command);
+        if (saa_num >= SAA7146_MAX)
+                goto err;
 
-                /* unmap and free memory */
-                saa->audhead = saa->audtail = saa->osdhead = 0;
-                saa->vidhead = saa->vidtail = saa->osdtail = 0;
-                vfree(saa->vidbuf);
-                vfree(saa->audbuf);
-                vfree(saa->osdbuf);
-                kfree(saa->dmavid2);
-                saa->audbuf = saa->vidbuf = saa->osdbuf = NULL;
-                saa->dmavid2 = NULL;
-                kfree(saa->dmadebi);
-                kfree(saa->dmavid1);
-                kfree(saa->dmavid3);
-                kfree(saa->dmaa1in);
-                kfree(saa->dmaa1out);
-                kfree(saa->dmaa2in);
-                kfree(saa->dmaa2out);
-                kfree(saa->dmaRPS1);
-                kfree(saa->dmaRPS2);
-                free_irq(saa->irq, saa);
-                if (saa->saa7146_mem)
-                        iounmap(saa->saa7146_mem);
-                if (saa->video_dev.minor != -1)
-                        video_unregister_device(&saa->video_dev);
+        if (!pdev->subsystem_vendor)
+                dev_info(&pdev->dev, "%d: rev1 decoder\n", saa_num);
+        else
+                dev_info(&pdev->dev, "%d: SDM2xx found\n", saa_num);
+
+        pci_set_drvdata(pdev, (void *)saa_num);
+
+        retval = configure_saa7146(pdev, saa_num);
+        if (retval) {
+                dev_err(&pdev->dev, "%d: error in configuring\n", saa_num);
+                goto err;
+        }
+
+        if (init_saa7146(saa_num, &pdev->dev) < 0) {
+                dev_err(&pdev->dev, "%d: error in initialization\n", saa_num);
+                retval = -EIO;
+                goto errrel;
         }
+
+        saa_num++;
+
+        return 0;
+errrel:
+        stradis_release_saa(pdev);
+err:
+        return retval;
 }
 
+static void __devexit stradis_remove(struct pci_dev *pdev)
+{
+        stradis_release_saa(pdev);
+}
+
+static struct pci_device_id stradis_pci_tbl[] = {
+        { PCI_DEVICE(PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146) },
+        { 0 }
+};
+MODULE_DEVICE_TABLE(pci, stradis_pci_tbl);
+
+static struct pci_driver stradis_driver = {
+        .name           = "stradis",
+        .id_table       = stradis_pci_tbl,
+        .probe          = stradis_probe,
+        .remove         = __devexit_p(stradis_remove)
+};
 
-static int __init stradis_init (void)
+int __init stradis_init(void)
 {
-        struct pci_dev *dev = NULL;
-        int result = 0, i;
+        int retval;
 
         saa_num = 0;
 
-        while ((dev = pci_find_device(PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, dev))) {
-                if (!dev->subsystem_vendor)
-                        printk(KERN_INFO "stradis%d: rev1 decoder\n", saa_num);
-                else
-                        printk(KERN_INFO "stradis%d: SDM2xx found\n", saa_num); 
-                result = configure_saa7146(dev, saa_num++);
-                if (result)
-                        return result;
-        }
-        if (saa_num)
-                printk(KERN_INFO "stradis: %d card(s) found.\n", saa_num);
-        else
-                return -EINVAL;
-        for (i = 0; i < saa_num; i++)
-                if (init_saa7146(i) < 0) {
-                        release_saa();
-                        return -EIO;
-                }
-        return 0;
+        retval = pci_register_driver(&stradis_driver);
+        if (retval)
+                printk(KERN_ERR "stradis: Unable to register pci driver.\n");
+
+        return retval;
 }
 
 
-static void __exit stradis_exit (void)
+void __exit stradis_exit(void)
 {
-        release_saa();
+        pci_unregister_driver(&stradis_driver);
         printk(KERN_INFO "stradis: module cleanup complete\n");
 }
 
-
 module_init(stradis_init);
 module_exit(stradis_exit);
-