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| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2023-08-25 18:38:26 +0300 |
|---|---|---|
| committer | Georgi Djakov <djakov@kernel.org> | 2023-10-09 15:07:52 +0300 |
| commit | ba3f826639782587b70a684dae79d39f6d3c433e (patch) | |
| tree | 628a4d71b8bcaf2c359c757a0c373839fc930bf4 /drivers/interconnect | |
| parent | 919791d82d3b878094e9edc39b0d9a4eafcc0860 (diff) | |
| download | linux-ba3f826639782587b70a684dae79d39f6d3c433e.tar.xz | |
interconnect: qcom: icc-rpm: Check for node-specific rate coefficients
Some nodes may have different coefficients than the general values for
bus they're attached to. Check for that and use them if present. See
[1], [2] for reference.
[1] https://github.com/sonyxperiadev/kernel/commit/7456d9779af9ad6bb9c7ee6f33d5c5a8d3648e24
[2] https://github.com/artem/android_kernel_sony_msm8996/commit/bf7a8985dcaf0eab5bc2562d2d6775e7e29c0f30
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-4-c04b60caa467@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Diffstat (limited to 'drivers/interconnect')
| -rw-r--r-- | drivers/interconnect/qcom/icc-rpm.c | 14 | ||||
| -rw-r--r-- | drivers/interconnect/qcom/icc-rpm.h | 4 |
2 files changed, 14 insertions, 4 deletions
diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index 1d3af4e9ead8..9c40314e03b5 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -300,14 +300,14 @@ static u64 qcom_icc_calc_rate(struct qcom_icc_provider *qp, struct qcom_icc_node else agg_avg_rate = qn->sum_avg[ctx]; - if (qp->ab_coeff) { - agg_avg_rate = agg_avg_rate * qp->ab_coeff; + if (qn->ab_coeff) { + agg_avg_rate = agg_avg_rate * qn->ab_coeff; agg_avg_rate = div_u64(agg_avg_rate, 100); } - if (qp->ib_coeff) { + if (qn->ib_coeff) { agg_peak_rate = qn->max_peak[ctx] * 100; - agg_peak_rate = div_u64(qn->max_peak[ctx], qp->ib_coeff); + agg_peak_rate = div_u64(qn->max_peak[ctx], qn->ib_coeff); } else { agg_peak_rate = qn->max_peak[ctx]; } @@ -563,6 +563,12 @@ regmap_done: for (i = 0; i < num_nodes; i++) { size_t j; + if (!qnodes[i]->ab_coeff) + qnodes[i]->ab_coeff = qp->ab_coeff; + + if (!qnodes[i]->ib_coeff) + qnodes[i]->ib_coeff = qp->ib_coeff; + node = icc_node_create(qnodes[i]->id); if (IS_ERR(node)) { ret = PTR_ERR(node); diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h index 725e0d4840e4..4abf99ce2690 100644 --- a/drivers/interconnect/qcom/icc-rpm.h +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -103,6 +103,8 @@ struct qcom_icc_qos { * @mas_rpm_id: RPM id for devices that are bus masters * @slv_rpm_id: RPM id for devices that are bus slaves * @qos: NoC QoS setting parameters + * @ab_coeff: a percentage-based coefficient for compensating the AB calculations + * @ib_coeff: an inverse-percentage-based coefficient for compensating the IB calculations * @bus_clk_rate: a pointer to an array containing bus clock rates in Hz */ struct qcom_icc_node { @@ -118,6 +120,8 @@ struct qcom_icc_node { int mas_rpm_id; int slv_rpm_id; struct qcom_icc_qos qos; + u16 ab_coeff; + u16 ib_coeff; u32 bus_clk_rate[QCOM_SMD_RPM_STATE_NUM]; }; |