On Mon, Jul 02, 2012 at 11:59:37AM +1000, Anton Blanchard wrote: > >When using my Logitech Harmony remote I get regular dropped events >(about 1 in every 3). Adjusting the sample frequency to 6us so we >sample at a multiple of an RC-6 pulse (444us) fixes it. Sounds weird. The in-kernel RC6 decoder already has margins of around 50% for most pulse/spaces (i.e. 444us +/- 222us). Changing the sample resolution from 10 to 6 us should have little to no effect on the RC6 decoding (also, the Windows driver uses a 50us resolution IIRC). Do you have a log of a successful and unsuccesful event (the timings that is)? >Signed-off-by: Anton Blanchard <anton@xxxxxxxxx> >--- > >Index: linux/drivers/media/rc/winbond-cir.c >=================================================================== >--- linux.orig/drivers/media/rc/winbond-cir.c 2012-07-01 14:54:28.993475033 +1000 >+++ linux/drivers/media/rc/winbond-cir.c 2012-07-01 14:55:50.500939910 +1000 >@@ -358,7 +358,7 @@ wbcir_irq_rx(struct wbcir_data *data, st > if (data->rxstate == WBCIR_RXSTATE_ERROR) > continue; > rawir.pulse = irdata & 0x80 ? false : true; >- rawir.duration = US_TO_NS((irdata & 0x7F) * 10); >+ rawir.duration = US_TO_NS((irdata & 0x7F) * 6); > ir_raw_event_store_with_filter(data->dev, &rawir); > } > >@@ -874,8 +874,8 @@ wbcir_init_hw(struct wbcir_data *data) > /* prescaler 1.0, tx/rx fifo lvl 16 */ > outb(0x30, data->sbase + WBCIR_REG_SP3_EXCR2); > >- /* Set baud divisor to sample every 10 us */ >- outb(0x0F, data->sbase + WBCIR_REG_SP3_BGDL); >+ /* Set baud divisor to sample every 6 us */ >+ outb(0x09, data->sbase + WBCIR_REG_SP3_BGDL); > outb(0x00, data->sbase + WBCIR_REG_SP3_BGDH); > > /* Set CEIR mode */ > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
