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| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2023-08-25 17:38:25 +0200 |
|---|---|---|
| committer | Georgi Djakov <djakov@kernel.org> | 2023-10-09 15:07:43 +0300 |
| commit | 919791d82d3b878094e9edc39b0d9a4eafcc0860 (patch) | |
| tree | a8bc7f9dfb91e86968904fd373d1befa91cabad8 /drivers/interconnect/qcom/icc-rpm.c | |
| parent | db8fc1002c53bc17a3ca6fad2c524de42b77c146 (diff) | |
| download | linux-919791d82d3b878094e9edc39b0d9a4eafcc0860.tar.gz linux-919791d82d3b878094e9edc39b0d9a4eafcc0860.tar.bz2 linux-919791d82d3b878094e9edc39b0d9a4eafcc0860.zip | |
interconnect: qcom: icc-rpm: Let nodes drive their own bus clock
If this hardware couldn't get messier, some nodes are supposed to drive
their own bus clock.. Presumably to connect to some intermediate
interface between the node itself and the bus it's (supposed to be)
connected to.
Expand the node struct with the necessary data and hook up the
allocations & calculations.
Note that the node-specific AB/IB coefficients contribute (by design)
to both the node-level and the bus-level aggregation.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-3-c04b60caa467@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Diffstat (limited to 'drivers/interconnect/qcom/icc-rpm.c')
| -rw-r--r-- | drivers/interconnect/qcom/icc-rpm.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index 8c1bfd65d774..1d3af4e9ead8 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -414,6 +414,33 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) qp->bus_clk_rate[QCOM_SMD_RPM_SLEEP_STATE] = sleep_rate; } + /* Handle the node-specific clock */ + if (!src_qn->bus_clk_desc) + return 0; + + active_rate = qcom_icc_calc_rate(qp, src_qn, QCOM_SMD_RPM_ACTIVE_STATE); + sleep_rate = qcom_icc_calc_rate(qp, src_qn, QCOM_SMD_RPM_SLEEP_STATE); + + if (active_rate != src_qn->bus_clk_rate[QCOM_SMD_RPM_ACTIVE_STATE]) { + ret = qcom_icc_rpm_set_bus_rate(src_qn->bus_clk_desc, QCOM_SMD_RPM_ACTIVE_STATE, + active_rate); + if (ret) + return ret; + + /* Cache the rate after we've successfully committed it to RPM */ + src_qn->bus_clk_rate[QCOM_SMD_RPM_ACTIVE_STATE] = active_rate; + } + + if (sleep_rate != src_qn->bus_clk_rate[QCOM_SMD_RPM_SLEEP_STATE]) { + ret = qcom_icc_rpm_set_bus_rate(src_qn->bus_clk_desc, QCOM_SMD_RPM_SLEEP_STATE, + sleep_rate); + if (ret) + return ret; + + /* Cache the rate after we've successfully committed it to RPM */ + src_qn->bus_clk_rate[QCOM_SMD_RPM_SLEEP_STATE] = sleep_rate; + } + return 0; } |