On 11/21/2018 11:36 AM, Viresh Kumar wrote:
On 21-11-18, 10:47, Viresh Kumar wrote:
On 21-11-18, 10:34, Rajendra Nayak wrote:
On 11/5/2018 12:06 PM, Viresh Kumar wrote:
Introduce a new helper dev_pm_opp_xlate_performance_state() which will
be used to translate from pstate of a device to another one.
Initially this will be used by genpd to find pstate of a master domain
using its sub-domain's pstate.
Signed-off-by: Viresh Kumar <viresh.ku...@linaro.org>
---
drivers/opp/core.c | 49 ++++++++++++++++++++++++++++++++++++++++++
include/linux/pm_opp.h | 7 ++++++
2 files changed, 56 insertions(+)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 0eaa954b3f6c..010a4268e8dd 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1707,6 +1707,55 @@ void dev_pm_opp_put_genpd_virt_dev(struct opp_table
*opp_table,
dev_err(virt_dev, "Failed to find required device entry\n");
}
+/**
+ * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for
src_table.
+ * @src_table: OPP table which has dst_table as one of its required OPP table.
So I have a case where the src_table and dst_table are shared/same. Can you
explain how would
it work in such a case?
Can you give the example, as I am finding some issues with such shared
tables. Though the code may work just fine btw.
I may have found the problem you are facing here. Please try this diff
and tell me if you hitting it, check this in dmesg.
Yes, I do seem to be hitting this.
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index 3740822b4197..6c45774306b0 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -225,6 +225,7 @@ static void _opp_table_alloc_required_tables(struct
opp_table *opp_table,
free_required_tables:
_opp_table_free_required_tables(opp_table);
put_np:
+ dev_err(dev, "Failed to allocate required OPP tables\n");
of_node_put(np);
}
