Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
interconnect: qcom: icc-rpm: Separate out clock rate calulcations
In preparation for also setting per-node clock rates, separate out the
logic that computes it.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-2-c04b60caa467@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
authored by
Konrad Dybcio
and committed by
Georgi Djakov
db8fc100
dd014803
+30
-23
+30
-23
drivers/interconnect/qcom/icc-rpm.c
+30
-23
drivers/interconnect/qcom/icc-rpm.c
···
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return 0;
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}
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static u64 qcom_icc_calc_rate(struct qcom_icc_provider *qp, struct qcom_icc_node *qn, int ctx)
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{
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u64 agg_avg_rate, agg_peak_rate, agg_rate;
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+
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if (qn->channels)
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agg_avg_rate = div_u64(qn->sum_avg[ctx], qn->channels);
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else
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agg_avg_rate = qn->sum_avg[ctx];
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+
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if (qp->ab_coeff) {
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agg_avg_rate = agg_avg_rate * qp->ab_coeff;
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agg_avg_rate = div_u64(agg_avg_rate, 100);
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}
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if (qp->ib_coeff) {
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agg_peak_rate = qn->max_peak[ctx] * 100;
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agg_peak_rate = div_u64(qn->max_peak[ctx], qp->ib_coeff);
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} else {
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agg_peak_rate = qn->max_peak[ctx];
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}
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agg_rate = max_t(u64, agg_avg_rate, agg_peak_rate);
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return div_u64(agg_rate, qn->buswidth);
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}
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/**
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* qcom_icc_bus_aggregate - calculate bus clock rates by traversing all nodes
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* @provider: generic interconnect provider
···
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static void qcom_icc_bus_aggregate(struct icc_provider *provider, u64 *agg_clk_rate)
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{
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struct qcom_icc_provider *qp = to_qcom_provider(provider);
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u64 agg_avg_rate, agg_peak_rate, agg_rate;
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struct qcom_icc_node *qn;
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struct icc_node *node;
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int i;
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int ctx;
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/*
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* Iterate nodes on the provider, aggregate bandwidth requests for
···
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*/
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list_for_each_entry(node, &provider->nodes, node_list) {
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qn = node->data;
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for (i = 0; i < QCOM_SMD_RPM_STATE_NUM; i++) {
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if (qn->channels)
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agg_avg_rate = div_u64(qn->sum_avg[i], qn->channels);
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else
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agg_avg_rate = qn->sum_avg[i];
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if (qp->ab_coeff) {
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agg_avg_rate = agg_avg_rate * qp->ab_coeff;
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agg_avg_rate = div_u64(agg_avg_rate, 100);
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}
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if (qp->ib_coeff) {
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agg_peak_rate = qn->max_peak[i] * 100;
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agg_peak_rate = div_u64(qn->max_peak[i], qp->ib_coeff);
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} else {
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agg_peak_rate = qn->max_peak[i];
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}
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agg_rate = max_t(u64, agg_avg_rate, agg_peak_rate);
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agg_clk_rate[i] = max_t(u64, agg_clk_rate[i], agg_rate);
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for (ctx = 0; ctx < QCOM_SMD_RPM_STATE_NUM; ctx++) {
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agg_clk_rate[ctx] = max_t(u64, agg_clk_rate[ctx],
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qcom_icc_calc_rate(qp, qn, ctx));
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}
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}
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}