[PATCH v3 7/7] soc: qcom: rpmpd/rpmhpd: Add a max vote on all corners at init

Rajendra Nayak
2018-06-12T04:41:50Z

As we move from no clients/consumers in kernel voting on corners,
to *some* voting and some not voting, we might end up in a situation
where the clients which remove votes can adversly impact others
who still don't have a way to vote.

To avoid this situation, have a max vote on all corners at init.
This should/can be removed once we have all clients moved to
be able to vote/unvote for themselves.

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/soc/qcom/rpmhpd.c | 12 +++++++++++-
drivers/soc/qcom/rpmpd.c | 9 +++++++++
2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/rpmhpd.c b/drivers/soc/qcom/rpmhpd.c
index 7083ec1590ff..3c753d33aeee 100644
--- a/drivers/soc/qcom/rpmhpd.c
+++ b/drivers/soc/qcom/rpmhpd.c
@@ -329,7 +329,7 @@ static int rpmhpd_update_level_mapping(struct rpmhpd *rpmhpd)

static int rpmhpd_probe(struct platform_device *pdev)
{
- int i, ret;
+ int i, ret, max_level;
size_t num;
struct genpd_onecell_data *data;
struct rpmhpd **rpmhpds;
@@ -390,6 +390,16 @@ static int rpmhpd_probe(struct platform_device *pdev)
pm_genpd_init(&rpmhpds[i]->pd, NULL, true);

data->domains[i] = &rpmhpds[i]->pd;
+
+ /*
+ * Until we have all consumers voting on corners
+ * just vote the max corner on all PDs
+ * This should ideally be *removed* once we have
+ * all (most) consumers being able to vote
+ */
+ max_level = rpmhpds[i]->level_count - 1;
+ rpmhpd_set_performance(&rpmhpds[i]->pd, rpmhpds[i]->level[max_level]);
+ rpmhpd_power_on(&rpmhpds[i]->pd);
}

return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
diff --git a/drivers/soc/qcom/rpmpd.c b/drivers/soc/qcom/rpmpd.c
index 53209454c1f3..6440163305e3 100644
--- a/drivers/soc/qcom/rpmpd.c
+++ b/drivers/soc/qcom/rpmpd.c
@@ -310,6 +310,15 @@ static int rpmpd_probe(struct platform_device *pdev)
pm_genpd_init(&rpmpds[i]->pd, NULL, true);

data->domains[i] = &rpmpds[i]->pd;
+
+ /*
+ * Until we have all consumers voting on corners
+ * just vote the max corner on all PDs
+ * This should ideally be *removed* once we have
+ * all (most) consumers being able to vote
+ */
+ rpmpd_set_performance(&rpmpds[i]->pd, MAX_RPMPD_STATE);
+ rpmpd_power_on(&rpmpds[i]->pd);
}

return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
--
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