#include <linux/pci.h>
#include <linux/init.h>
#include <linux/slab.h>

static LIST_HEAD(cx878_pci_list);
static DEFINE_MUTEX(cx878_pci_list_lock);

struct pci_cx878_data {
	int cx878_counter;
	int id;
	struct list_head cx878_list;
};

// Pinnacle PCTVSAT, Avermedia AverTV DVB-T 771 and 761, TT 1.6 DVB-S FF, TwinHan DST and clones, all other bt8xx-based DVB cards equally
static struct pci_device_id pci_cx878_ids[]={
	{ 0x109e, 0x036e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, // function 0, video controller (I2C bus)
	{ 0x109e, 0x0878, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, // function 1, audio controller (RISC DMA engine)
	{}
};

static int __devinit pci_cx878_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
{
	struct list_head *list = NULL;
	struct pci_cx878_data *h = NULL, *dev = NULL;
	int id;

	id = (pdev->bus->number<<8) | PCI_SLOT(pdev->devfn);
	printk("ID: %04x\n",id);
	mutex_lock(&cx878_pci_list_lock);
	list_for_each(list, &cx878_pci_list) {
		h = list_entry(list, struct pci_cx878_data, cx878_list);
		if (h->id == id)
			dev=h;
	}

	if (h != NULL) {
		dev->cx878_counter++;
		printk("found cx878 list (ID: %04x)! : %d\n",dev->id,dev->cx878_counter);
	} else {
		h=kmalloc(sizeof(struct pci_cx878_data), GFP_KERNEL);
		h->cx878_counter=5;
		h->id=id;
		list_add_tail(&h->cx878_list, &cx878_pci_list);
		printk("no list available initializing new one (id: %04x): %d\n",h->id, h->cx878_counter);
	}
	mutex_unlock(&cx878_pci_list_lock);
	return 0;
}

static struct pci_driver driver = {
	.name = "cx878",
	.id_table = pci_cx878_ids,
	.probe = pci_cx878_probe,
};


static int __init pci_driver_init(void)
{
	printk("=============== LOADING MODULE ===============\n");
	return pci_register_driver(&driver);
}

static void __exit pci_driver_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(pci_driver_init);
module_exit(pci_driver_exit);