diff options
Diffstat (limited to 'drivers/interconnect')
| -rw-r--r-- | drivers/interconnect/qcom/icc-rpm.c | 59 |
1 files changed, 19 insertions, 40 deletions
diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index 5733261d9407..3209d8de709b 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -292,58 +292,44 @@ static int qcom_icc_bw_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, } /** - * qcom_icc_bus_aggregate - aggregate bandwidth by traversing all nodes + * qcom_icc_bus_aggregate - calculate bus clock rates by traversing all nodes * @provider: generic interconnect provider - * @agg_avg: an array for aggregated average bandwidth of buckets - * @agg_peak: an array for aggregated peak bandwidth of buckets - * @max_agg_avg: pointer to max value of aggregated average bandwidth + * @agg_clk_rate: array containing the aggregated clock rates in kHz */ -static void qcom_icc_bus_aggregate(struct icc_provider *provider, - u64 *agg_avg, u64 *agg_peak, - u64 *max_agg_avg) +static void qcom_icc_bus_aggregate(struct icc_provider *provider, u64 *agg_clk_rate) { - struct icc_node *node; + u64 agg_avg_rate, agg_rate; struct qcom_icc_node *qn; - u64 sum_avg[QCOM_SMD_RPM_STATE_NUM]; + struct icc_node *node; int i; - /* Initialise aggregate values */ - for (i = 0; i < QCOM_SMD_RPM_STATE_NUM; i++) { - agg_avg[i] = 0; - agg_peak[i] = 0; - } - - *max_agg_avg = 0; - /* - * Iterate nodes on the interconnect and aggregate bandwidth - * requests for every bucket. + * Iterate nodes on the provider, aggregate bandwidth requests for + * every bucket and convert them into bus clock rates. */ list_for_each_entry(node, &provider->nodes, node_list) { qn = node->data; for (i = 0; i < QCOM_SMD_RPM_STATE_NUM; i++) { if (qn->channels) - sum_avg[i] = div_u64(qn->sum_avg[i], qn->channels); + agg_avg_rate = div_u64(qn->sum_avg[i], qn->channels); else - sum_avg[i] = qn->sum_avg[i]; - agg_avg[i] += sum_avg[i]; - agg_peak[i] = max_t(u64, agg_peak[i], qn->max_peak[i]); + agg_avg_rate = qn->sum_avg[i]; + + agg_rate = max_t(u64, agg_avg_rate, qn->max_peak[i]); + do_div(agg_rate, qn->buswidth); + + agg_clk_rate[i] = max_t(u64, agg_clk_rate[i], agg_rate); } } - - /* Find maximum values across all buckets */ - for (i = 0; i < QCOM_SMD_RPM_STATE_NUM; i++) - *max_agg_avg = max_t(u64, *max_agg_avg, agg_avg[i]); } static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) { - struct qcom_icc_provider *qp; struct qcom_icc_node *src_qn = NULL, *dst_qn = NULL; + u64 agg_clk_rate[QCOM_SMD_RPM_STATE_NUM] = { 0 }; struct icc_provider *provider; + struct qcom_icc_provider *qp; u64 active_rate, sleep_rate; - u64 agg_avg[QCOM_SMD_RPM_STATE_NUM], agg_peak[QCOM_SMD_RPM_STATE_NUM]; - u64 max_agg_avg; int ret; src_qn = src->data; @@ -352,7 +338,9 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) provider = src->provider; qp = to_qcom_provider(provider); - qcom_icc_bus_aggregate(provider, agg_avg, agg_peak, &max_agg_avg); + qcom_icc_bus_aggregate(provider, agg_clk_rate); + active_rate = agg_clk_rate[QCOM_SMD_RPM_ACTIVE_STATE]; + sleep_rate = agg_clk_rate[QCOM_SMD_RPM_SLEEP_STATE]; ret = qcom_icc_rpm_set(src_qn, src_qn->sum_avg); if (ret) @@ -368,15 +356,6 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) if (!qp->bus_clk_desc && !qp->bus_clk) return 0; - /* Intentionally keep the rates in kHz as that's what RPM accepts */ - active_rate = max(agg_avg[QCOM_SMD_RPM_ACTIVE_STATE], - agg_peak[QCOM_SMD_RPM_ACTIVE_STATE]); - do_div(active_rate, src_qn->buswidth); - - sleep_rate = max(agg_avg[QCOM_SMD_RPM_SLEEP_STATE], - agg_peak[QCOM_SMD_RPM_SLEEP_STATE]); - do_div(sleep_rate, src_qn->buswidth); - /* * Downstream checks whether the requested rate is zero, but it makes little sense * to vote for a value that's below the lower threshold, so let's not do so. |