On Thu, Sep 26, 2013 at 01:09:26PM +0300, Mika Kuoppala wrote:
> ville.syrjala@xxxxxxxxxxxxxxx writes:
>
> > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> >
> > vlv_find_best_dpll() has an open coded DIV_ROUND_CLOSEST(). Replace it
> > with the real thing.
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/intel_display.c | 3 +--
> > 1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index fca56fc..4b1af94 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -696,8 +696,7 @@ vlv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
> > p = p1 * p2;
> > /* based on hardware requirement, prefer bigger m1,m2 values */
> > for (m1 = limit->m1.min; m1 <= limit->m1.max; m1++) {
> > - m2 = (((2*(fastclk * p * n / m1 )) +
> > - refclk) / (2*refclk));
> > + m2 = DIV_ROUND_CLOSEST(fastclk * p * n, refclk * m1);
> > m = m1 * m2;
> > vco = updrate * m;
> >
> > --
> > 1.8.1.5
>
> Not a problem with this patch but perhaps consideration for further
> cleanups: target and refclk should be u32 and further down the line
> the crtc_config.clock and xxx_get_refclk() also.
>
> Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Up to this all merged, thanks for patches&review.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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