/*
-You need to know the following:
-" RX1 is connected to ground.
-" TX1 is not connected.
-" CLKO is not connected.
-" Setting the OCR register to 0xDA is a good idea.
- This means normal output mode , push-pull and the correct polarity.
-" In the CDR register, you should set CBP to 1.
+You need to know the following:
+" RX1 is connected to ground.
+" TX1 is not connected.
+" CLKO is not connected.
+" Setting the OCR register to 0xDA is a good idea.
+ This means normal output mode , push-pull and the correct polarity.
+" In the CDR register, you should set CBP to 1.
You will probably also want to set the clock divider value to 0 (meaning divide-by-2),
the Pelican bit, and the clock-off bit (you have no need for CLKOUT anyway.)
error_io:
pci_release_region(candev->sysdevptr.pcidev, 0);
#endif /*(LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))*/
-
+
return -ENODEV;
}
void kv_pcican_write_register(unsigned data, can_ioptr_t address)
{
- can_outb(data,address);
+ can_outb(data,address);
}
unsigned kv_pcican_read_register(can_ioptr_t address)
kv_pcican_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR);
kv_pcican_write_register(0, chip->chip_base_addr+SJAIER);
-
+
kv_pcican_read_register(chip->chip_base_addr+SJAIR);
}
-
+
kv_pcican_connect_irq(candev);
return 0;
-}
+}
int kv_pcican_init_hw_data(struct candevice_t *candev)
{
- struct pci_dev *pcidev = NULL;
+ struct pci_dev *pcidev;
int i;
- do {
- pcidev = pci_find_device(KV_PCICAN_PCICAN_VENDOR, KV_PCICAN_PCICAN_ID, pcidev);
- if(pcidev == NULL) return -ENODEV;
- } while(can_check_dev_taken(pcidev));
-
+ pcidev = can_pci_get_next_untaken_device(KV_PCICAN_PCICAN_VENDOR, KV_PCICAN_PCICAN_ID);
+ if(pcidev == NULL)
+ return -ENODEV;
+
if (pci_enable_device (pcidev)){
printk(KERN_CRIT "Setup of PCICAN failed\n");
+ can_pci_dev_put(pcidev);
return -EIO;
}
candev->sysdevptr.pcidev=pcidev;
-
+
for(i=0;i<3;i++){
if(!(pci_resource_flags(pcidev,i)&IORESOURCE_IO)){
printk(KERN_CRIT "PCICAN region %d is not IO\n",i);
+ can_pci_dev_put(pcidev);
return -EIO;
}
}
candev->dev_base_addr=pci_resource_start(pcidev,0); /*S5920*/
candev->io_addr=pci_resource_start(pcidev,1); /*IO window for SJA1000 chips*/
candev->res_addr=pci_resource_start(pcidev,2); /*XILINX board wide address*/
-
+
/*candev->flags |= CANDEV_PROGRAMMABLE_IRQ;*/
if (!strcmp(candev->hwname,"pcican-s")) {
return 0;
}
+void kv_pcican_done_hw_data(struct candevice_t *candev)
+{
+ struct pci_dev *pcidev = candev->sysdevptr.pcidev;
+ can_pci_dev_put(pcidev);
+}
+
int kv_pcican_init_chip_data(struct candevice_t *candev, int chipnr)
{
if(candev->sysdevptr.pcidev==NULL)
return -ENODEV;
-
+
candev->chip[chipnr]->chip_irq=candev->sysdevptr.pcidev->irq;
sja1000p_fill_chipspecops(candev->chip[chipnr]);
candev->chip[chipnr]->flags |= CHIP_IRQ_PCI;
return 0;
-}
+}
int kv_pcican_init_obj_data(struct canchip_t *chip, int objnr)
{
hwspecops->release_io = kv_pcican_release_io;
hwspecops->reset = kv_pcican_reset;
hwspecops->init_hw_data = kv_pcican_init_hw_data;
+ hwspecops->done_hw_data = kv_pcican_done_hw_data;
hwspecops->init_chip_data = kv_pcican_init_chip_data;
hwspecops->init_obj_data = kv_pcican_init_obj_data;
hwspecops->write_register = kv_pcican_write_register;