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opp: Reduce code duplication in _set_required_opps()
Move call to dev_pm_genpd_set_performance_state() to a separate function so we can avoid duplicating the code for the single and multiple genpd case. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> [ Viresh: Validate virtual device before use ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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@ -779,6 +779,24 @@ static int _set_opp_custom(const struct opp_table *opp_table,
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return opp_table->set_opp(data);
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}
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static int _set_required_opp(struct device *dev, struct device *pd_dev,
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struct dev_pm_opp *opp, int i)
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{
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unsigned int pstate = likely(opp) ? opp->required_opps[i]->pstate : 0;
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int ret;
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if (!pd_dev)
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return 0;
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ret = dev_pm_genpd_set_performance_state(pd_dev, pstate);
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if (ret) {
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dev_err(dev, "Failed to set performance rate of %s: %d (%d)\n",
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dev_name(pd_dev), pstate, ret);
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}
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return ret;
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}
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/* This is only called for PM domain for now */
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static int _set_required_opps(struct device *dev,
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struct opp_table *opp_table,
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@ -786,22 +804,14 @@ static int _set_required_opps(struct device *dev,
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{
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struct opp_table **required_opp_tables = opp_table->required_opp_tables;
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struct device **genpd_virt_devs = opp_table->genpd_virt_devs;
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unsigned int pstate;
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int i, ret = 0;
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if (!required_opp_tables)
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return 0;
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/* Single genpd case */
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if (!genpd_virt_devs) {
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pstate = likely(opp) ? opp->required_opps[0]->pstate : 0;
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ret = dev_pm_genpd_set_performance_state(dev, pstate);
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if (ret) {
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dev_err(dev, "Failed to set performance state of %s: %d (%d)\n",
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dev_name(dev), pstate, ret);
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}
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return ret;
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}
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if (!genpd_virt_devs)
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return _set_required_opp(dev, dev, opp, 0);
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/* Multiple genpd case */
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@ -810,19 +820,10 @@ static int _set_required_opps(struct device *dev,
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* after it is freed from another thread.
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*/
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mutex_lock(&opp_table->genpd_virt_dev_lock);
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for (i = 0; i < opp_table->required_opp_count; i++) {
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pstate = likely(opp) ? opp->required_opps[i]->pstate : 0;
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if (!genpd_virt_devs[i])
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continue;
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ret = dev_pm_genpd_set_performance_state(genpd_virt_devs[i], pstate);
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if (ret) {
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dev_err(dev, "Failed to set performance rate of %s: %d (%d)\n",
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dev_name(genpd_virt_devs[i]), pstate, ret);
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ret = _set_required_opp(dev, genpd_virt_devs[i], opp, i);
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if (ret)
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break;
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}
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}
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mutex_unlock(&opp_table->genpd_virt_dev_lock);
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