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drm/i915/icl: keep track of unused pll while looping 

Instead of looping again on the range of plls, just keep track of one
unused one and use it later.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190125222444.19926-5-lucas.demarchi@intel.com
This commit is contained in:
Lucas De Marchi 2019-01-25 14:24:44 -08:00
parent 20fd2ab7be
commit 5b0bd14dcc
1 changed files with 9 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/i915/intel_dpll_mgr.c
View File

@ -247,7 +247,7 @@ intel_find_shared_dpll(struct intel_crtc *crtc,
enum intel_dpll_id range_max)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_shared_dpll *pll;
struct intel_shared_dpll *pll, *unused_pll = NULL;
struct intel_shared_dpll_state *shared_dpll;
enum intel_dpll_id i;
@ -257,8 +257,10 @@ intel_find_shared_dpll(struct intel_crtc *crtc,
pll = &dev_priv->shared_dplls[i];
/* Only want to check enabled timings first */
if (shared_dpll[i].crtc_mask == 0)
if (shared_dpll[i].crtc_mask == 0) {
unused_pll = pll;
continue;
}
if (memcmp(&crtc_state->dpll_hw_state,
&shared_dpll[i].hw_state,
@ -273,14 +275,11 @@ intel_find_shared_dpll(struct intel_crtc *crtc,
}
/* Ok no matching timings, maybe there's a free one? */
for (i = range_min; i <= range_max; i++) {
pll = &dev_priv->shared_dplls[i];
if (shared_dpll[i].crtc_mask == 0) {
DRM_DEBUG_KMS("[CRTC:%d:%s] allocated %s\n",
crtc->base.base.id, crtc->base.name,
pll->info->name);
return pll;
}
if (unused_pll) {
DRM_DEBUG_KMS("[CRTC:%d:%s] allocated %s\n",
crtc->base.base.id, crtc->base.name,
unused_pll->info->name);
return unused_pll;
}
return NULL;