Guennadi Liakhovetski <g.liakhovetski <at> gmx.de> writes: > On Wed, 27 Oct 2010, Baruch Siach wrote: > > When SOCAM_PCLK_SAMPLE_FALLING, just leave CSICR1_REDGE unset, > > otherwise we get > > the inverted behaviour. > Seems logical to me, that if this is true, then you need the inverse: > > if (!(common_flags & SOCAM_PCLK_SAMPLE_FALLING)) > csicr1 |= CSICR1_INV_PCLK;
No. Doing so you'll get the inverted behaviour of SAMPLE_RISING. When common_flags have SAMPLE_RISING set and SAMPLE_FALLING unset you get CSICR1_REDGE set, which triggers on the rising edge, and then also CSICR1_INV_PCLK set, which invert this. Thus you get the expected behaviour of SAMPLE_FALLING. Currently you get the inverted behaviour only for SAMPLE_FALLING. IMO, we should just use CSICR1_REDGE to set the sample timing, and leave CSICR1_INV_PCLK alone. baruch > > if (common_flags & SOCAM_PCLK_SAMPLE_RISING) > > csicr1 |= CSICR1_REDGE; > > - if (common_flags & SOCAM_PCLK_SAMPLE_FALLING) > > - csicr1 |= CSICR1_INV_PCLK; > > if (common_flags & SOCAM_VSYNC_ACTIVE_HIGH) > > csicr1 |= CSICR1_SOF_POL; > > if (common_flags & SOCAM_HSYNC_ACTIVE_HIGH) -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
