Pavel Machek wrote:
> --- clean/drivers/usb/uhci.c Thu Apr 27 10:05:49 2000
> +++ linux/drivers/usb/uhci.c Fri May 5 12:21:58 2000
> @@ -2357,10 +2357,14 @@
>
> static int handle_pm_event(struct pm_dev *dev, pm_request_t rqst, void *data)
> {
> + struct uhci *uhci = dev->data;
> switch (rqst) {
> case PM_SUSPEND:
> + reset_hc(uhci);
> break;
> case PM_RESUME:
> + reset_hc(uhci);
> + start_hc(uhci);
> break;
> }
> return 0;
I don't doubt that this is better than the existing arrangement, but it
doesn't look complete.
>From my reading of the UHCI spec, I think that the following should
occur:
On initialisation of the HC, we Set bit 1 in the USBINTR register.
On getting an interrupt, we check the USBSTS register to see if bit 2 is
set, and if it is, we wake up the machine, then Clear bit 4 in the
USBSTS register.
On getting PM_SUSPEND, we Clear bit 0 in the USBCMD register, then Set
bit 3 in the USBCMD register.
On getting PM_RESUME, we Set bit 4 and Clear bit 3 in the USBCMD
register, wait 20ms, then Clear bit 4 in the USBCMD register. We might
need to Set bit 0 in the USBCMD register as well.
Only one problem - I can't do this, just don't know enough to code it.
Anyone, Bueller?
Brad
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