Hello. On 28-04-2011 12:01, Pavankumar Kondeti wrote:
From: Anji jonnala <anjir@xxxxxxxxxxxxxx>
ITC (Interrupt Threshold Control) field is to set the maximum rate at which the device controller will issue interrupts. The maximum interrupt interval is measured in micro frames. Valid values are 0, 1, 2, 4, 8, 16, 32, 64. The default value is 8 micro frames. Set ITC to zero for MSM to gain performance.
Signed-off-by: Anji jonnala<anjir@xxxxxxxxxxxxxx> Signed-off-by: Pavankumar Kondeti<pkondeti@xxxxxxxxxxxxxx> --- drivers/usb/gadget/ci13xxx_msm.c | 3 ++- drivers/usb/gadget/ci13xxx_udc.c | 11 +++++++++++ drivers/usb/gadget/ci13xxx_udc.h | 3 +++ 3 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c index e09178b..bd1a059 100644 --- a/drivers/usb/gadget/ci13xxx_udc.c +++ b/drivers/usb/gadget/ci13xxx_udc.c @@ -318,6 +318,17 @@ static int hw_device_reset(struct ci13xxx *udc) hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_DEVICE); hw_cwrite(CAP_USBMODE, USBMODE_SLOM, USBMODE_SLOM); /* HW>= 2.3 */ + /* + * ITC (Interrupt Threshold Control) field is to set the maximum + * rate at which the device controller will issue interrupts. + * The maximum interrupt interval measured in micro frames. + * Valid values are 0, 1, 2, 4, 8, 16, 32, 64. The default value is + * 8 micro frames. If CPU can handle interrupts at faster rate, ITC + * can be set to lesser value to gain performance. + */ + if (udc->udc_driver->flags && CI13XXX_ZERO_ITC)
I think you meant bitwise AND (&) here. WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
