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Altera_Forum's avatar
Altera_Forum
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20 years ago

should i write functions myself?

wentao and clansdown:

i want to use sl811hs,and select it in kernel ,should i write 4 functions myself??

1. char SL811Read (hci_t * hci, char offset)

{

hcipriv_t *hp = &hci->hp;

char data;

writeb (offset, hp->hcport);

wmb ();

data = readb (hp->hcport2);

rmb ();

return (data);

}

2.void SL811Write (hci_t * hci, char offset, char data)

3.void SL811BufRead (hci_t * hci, short offset, char *buf, short size)

4.void SL811BufWrite (hci_t * hci, short offset, char *buf, short size)

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    and when i build the kernel, here were some error:

    error: `GPDR' undeclared (first use in this function)[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux2.6.x/drivers/usb/host/hc_sl811.c] kernel_0416 line 1229

    error: `GPIO_RISING_EDGE' undeclared (first use in this function)[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/host/hc_sl811.c] kernel_0416 line 1230

    error: (Each undeclared identifier is reported only once[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/host/hc_sl811.c] kernel_0416 line 1229

    i find "GPIO_RISING_EDGE"and "GPDR" in sl811hs.c , but the program never defined them. why???
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    From what I gather from wentao, this driver takes a lot of work and is a dead end anyway because it's been superceded by the sl811-hcd driver from mainline 2.6.10. See the other thread for a basic idea of the steps to get that driver working.