Hi
On Tue, May 12, 2015 at 6:58 PM, Hans de Goede hdegoede@redhat.com wrote:
The usb-kbd key repeat code assumes that reports get repeated every 40 ms, this is never true when using CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP, and does not always works for CONFIG_SYS_USB_EVENT_POLL and CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE since not all usb keyboards honor the usb_set_idle() command.
For CONFIG_SYS_USB_EVENT_POLL we must use usb_set_idle() since we do a blocking wait for the hid report, so if we do not tell the keyboard to send a hid report every 40ms even if nothing changes then we will block u-boot for 1s (the default u-boot usb interrupt packet timeout). Note that in this case on keyboards which do not support usb_set_idle() we loose and we actually get 1s latencies on other u-boot activities.
For the other poll-methods this commit stops using usb_set_idle() and instead repeats the last received hid-report every 40 ms as long as no new hid-report is received. This fixes key-repeat not working at all with CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP and fixes it not working with keyboards which do not implement usb_set_idle() when using CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE.
Signed-off-by: Hans de Goede hdegoede@redhat.com
common/usb_kbd.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/common/usb_kbd.c b/common/usb_kbd.c index 24a1a56..d4733b1 100644 --- a/common/usb_kbd.c +++ b/common/usb_kbd.c @@ -31,7 +31,7 @@ int overwrite_console(void) #endif
/* Keyboard sampling rate */ -#define REPEAT_RATE (40 / 4) /* 40msec -> 25cps */ +#define REPEAT_RATE 40 /* 40msec -> 25cps */ #define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */
#define NUM_LOCK 0x53 @@ -103,6 +103,7 @@ struct usb_kbd_pdata { unsigned long intpipe; int intpktsize; int intinterval;
int last_report; struct int_queue *intq; uint32_t repeat_delay;@@ -318,15 +319,16 @@ static inline void usb_kbd_poll_for_event(struct usb_device *dev) data->intinterval);
usb_kbd_irq_worker(dev);-#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) +#else +# if defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) struct usb_interface *iface; struct usb_kbd_pdata *data = dev->privptr; iface = &dev->config.if_desc[0]; usb_get_report(dev, iface->desc.bInterfaceNumber, 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE);
if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE))
if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE)) { usb_kbd_irq_worker(dev);-#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE) +# elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE) struct usb_kbd_pdata *data = dev->privptr; if (poll_int_queue(dev, data->intq)) { usb_kbd_irq_worker(dev); @@ -335,6 +337,13 @@ static inline void usb_kbd_poll_for_event(struct usb_device *dev) data->intq = create_int_queue(dev, data->intpipe, 1, USB_KBD_BOOT_REPORT_SIZE, data->new, data->intinterval); +# endif
With or without space?
data->last_report = get_timer(0);/* Repeat last usb hid report every REPEAT_RATE ms for keyrepeat */} else if (data->last_report != -1 &&get_timer(data->last_report) > REPEAT_RATE) {usb_kbd_irq_worker(dev);data->last_report = get_timer(0);
is int get_timer type?
}#endif } @@ -445,12 +454,15 @@ static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) data->intpktsize = min(usb_maxpacket(dev, data->intpipe), USB_KBD_BOOT_REPORT_SIZE); data->intinterval = ep->bInterval;
data->last_report = -1; /* We found a USB Keyboard, install it. */ usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);+#ifdef CONFIG_SYS_USB_EVENT_POLL debug("USB KBD: found set idle...\n");
usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0);
usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE / 4, 0);+#endif
debug("USB KBD: enable interrupt pipe...\n");#ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
2.3.6
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