diff options
| author | Lina Iyer <ilina@codeaurora.org> | 2022-10-18 18:28:33 +0300 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2022-11-10 06:14:21 +0300 |
| commit | 25092e6100acd7fcc72deed2583e63db683bb872 (patch) | |
| tree | 3a67c095901c61a2d0513ca725fb136851dda1a9 /drivers/soc/qcom/rpmh-internal.h | |
| parent | 144560b070121d7b368a3c8da60c3c84484fc218 (diff) | |
| download | linux-25092e6100acd7fcc72deed2583e63db683bb872.tar.xz | |
soc: qcom: rpmh-rsc: Attach RSC to cluster PM domain
RSC is part the CPU subsystem and powers off the CPU domains when all
the CPUs and no RPMH transactions are pending from any of the drivers.
The RSC needs to flush the 'sleep' and 'wake' votes that are critical
for saving power when all the CPUs are in idle.
Let's make RSC part of the CPU PM domains, by attaching it to the
cluster power domain. Registering for PM domain notifications, RSC
driver can be notified that the last CPU is powering down. When the last
CPU is powering down the domain, let's flush the 'sleep' and 'wake'
votes that are stored in the data buffers into the hardware and also
write next wakeup in CONTROL_TCS.
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # SM8450
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221018152837.619426-3-ulf.hansson@linaro.org
Diffstat (limited to 'drivers/soc/qcom/rpmh-internal.h')
| -rw-r--r-- | drivers/soc/qcom/rpmh-internal.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/soc/qcom/rpmh-internal.h b/drivers/soc/qcom/rpmh-internal.h index 344ba687c13b..cd3d6ce137e3 100644 --- a/drivers/soc/qcom/rpmh-internal.h +++ b/drivers/soc/qcom/rpmh-internal.h @@ -97,7 +97,8 @@ struct rpmh_ctrlr { * @rsc_pm: CPU PM notifier for controller. * Used when solver mode is not present. * @cpus_in_pm: Number of CPUs not in idle power collapse. - * Used when solver mode is not present. + * Used when solver mode and "power-domains" is not present. + * @genpd_nb: PM Domain notifier for cluster genpd notifications. * @tcs: TCS groups. * @tcs_in_use: S/W state of the TCS; only set for ACTIVE_ONLY * transfers, but might show a sleep/wake TCS in use if @@ -117,6 +118,7 @@ struct rsc_drv { int id; int num_tcs; struct notifier_block rsc_pm; + struct notifier_block genpd_nb; atomic_t cpus_in_pm; struct tcs_group tcs[TCS_TYPE_NR]; DECLARE_BITMAP(tcs_in_use, MAX_TCS_NR); |