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drm/i915: Use DIV_ROUND_CLOSEST()

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vlv_find_best_dpll() has an open coded DIV_ROUND_CLOSEST(). Replace it
with the real thing.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-24 21:26:19 +03:00 committed by Daniel Vetter
parent 43b0ac5317
commit 5de56df5c7
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/i915/intel_display.c
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@ -695,8 +695,7 @@ 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;