| Message ID | 20230303-topic-rpmcc_sleep-v1-2-d9cfaf9b27a7@linaro.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | SMD RPMCC sleep preparations | expand |
On Sat, 4 Mar 2023 at 15:27, Konrad Dybcio <konrad.dybcio@linaro.org> wrote: > > From: Shawn Guo <shawn.guo@linaro.org> > > The RPM clocks are enabled/disabled through clk framework prepare/unprepare > hooks. Without .is_prepared hook, those unused RPM clocks will not be > disabled by core function clk_unprepare_unused_subtree(), because > clk_core_is_prepared() always returns 0. > > Add .is_prepared hook to clk_ops and return the clock prepare (enable) > state, so that those unused RPM clocks can be disabled by clk framework. Does it make any difference? Without this patch the clock framework depends on core->prepare_count to judge whether the clock should be unprepared. With this patch in place, it will depend on r->enabled, which is more or less the same thing. Probably there is one category, the prepared-but-not-enabled clocks. > > Signed-off-by: Shawn Guo <shawn.guo@linaro.org> > [Konrad: rebase, don't duplicate the enable func] > Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> > --- > drivers/clk/qcom/clk-smd-rpm.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/clk/qcom/clk-smd-rpm.c b/drivers/clk/qcom/clk-smd-rpm.c > index ecacfbc4a16c..cce7daa97c1e 100644 > --- a/drivers/clk/qcom/clk-smd-rpm.c > +++ b/drivers/clk/qcom/clk-smd-rpm.c > @@ -438,6 +438,7 @@ static const struct clk_ops clk_smd_rpm_ops = { > .round_rate = clk_smd_rpm_round_rate, > .recalc_rate = clk_smd_rpm_recalc_rate, > .is_enabled = clk_smd_rpm_is_enabled, > + .is_prepared = clk_smd_rpm_is_enabled, > }; > > static const struct clk_ops clk_smd_rpm_branch_ops = { > @@ -445,6 +446,7 @@ static const struct clk_ops clk_smd_rpm_branch_ops = { > .unprepare = clk_smd_rpm_unprepare, > .recalc_rate = clk_smd_rpm_recalc_rate, > .is_enabled = clk_smd_rpm_is_enabled, > + .is_prepared = clk_smd_rpm_is_enabled, > }; > > DEFINE_CLK_SMD_RPM_BRANCH_A(bi_tcxo, QCOM_SMD_RPM_MISC_CLK, 0, 19200000); > > -- > 2.39.2 >
diff --git a/drivers/clk/qcom/clk-smd-rpm.c b/drivers/clk/qcom/clk-smd-rpm.c index ecacfbc4a16c..cce7daa97c1e 100644 --- a/drivers/clk/qcom/clk-smd-rpm.c +++ b/drivers/clk/qcom/clk-smd-rpm.c @@ -438,6 +438,7 @@ static const struct clk_ops clk_smd_rpm_ops = { .round_rate = clk_smd_rpm_round_rate, .recalc_rate = clk_smd_rpm_recalc_rate, .is_enabled = clk_smd_rpm_is_enabled, + .is_prepared = clk_smd_rpm_is_enabled, }; static const struct clk_ops clk_smd_rpm_branch_ops = { @@ -445,6 +446,7 @@ static const struct clk_ops clk_smd_rpm_branch_ops = { .unprepare = clk_smd_rpm_unprepare, .recalc_rate = clk_smd_rpm_recalc_rate, .is_enabled = clk_smd_rpm_is_enabled, + .is_prepared = clk_smd_rpm_is_enabled, }; DEFINE_CLK_SMD_RPM_BRANCH_A(bi_tcxo, QCOM_SMD_RPM_MISC_CLK, 0, 19200000);