diff options
Diffstat (limited to 'drivers/ct69000.c')
| -rw-r--r-- | drivers/ct69000.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/ct69000.c b/drivers/ct69000.c index 7962f74d6..563556285 100644 --- a/drivers/ct69000.c +++ b/drivers/ct69000.c @@ -830,6 +830,7 @@ FindAndSetPllParamIntoXrRegs (unsigned int pixelclock, unsigned int m, n, vld, pd, PD, fref, xr_cb; unsigned int fvcomin, fvcomax, pclckmin, pclckmax, pclk; unsigned int pfreq, fvco, new_pixclock; + unsigned int D,nback,mback; fref = VIDEO_FREF; pd = 1; @@ -850,10 +851,19 @@ FindAndSetPllParamIntoXrRegs (unsigned int pixelclock, PD++; } /* fvco is exactly pd * pixelclock and higher than the ninmal VCO frequency */ - vld = (param->vld_set > param->vld_not_set) ? - param->vld_not_set : param->vld_set; - /* start with lower VLD (higher VLD is NOT yet implemented */ - FindBestPQFittingMN (fvco / vld, fref, param->mn_min, param->mn_max, &m, &n); /* rds = 1 */ + /* first try */ + vld = param->vld_set; + D=FindBestPQFittingMN (fvco / vld, fref, param->mn_min, param->mn_max, &m, &n); /* rds = 1 */ + mback=m; + nback=n; + /* second try */ + vld = param->vld_not_set; + if(D<FindBestPQFittingMN (fvco / vld, fref, param->mn_min, param->mn_max, &m, &n)) { /* rds = 1 */ + /* first try was better */ + m=mback; + n=nback; + vld = param->vld_set; + } m += param->mn_diff; n += param->mn_diff; PRINTF ("VCO %d, pd %d, m %d n %d vld %d \n", fvco, pd, m, n, vld); |