linux-kernel - Re: [PATCH] opp: Prepare for ->set_opp() helper to work without regulators

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Message-ID: <20210120080833.bw4c5bh2wntmiaqi@vireshk-i7>
Date:   Wed, 20 Jan 2021 13:38:33 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Dmitry Osipenko <digetx@...il.com>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] opp: Prepare for ->set_opp() helper to work without
 regulators

On 19-01-21, 12:05, Viresh Kumar wrote:
> Until now the ->set_opp() helper (i.e. special implementation for
> setting the OPPs for platforms) was implemented only to take care of
> multiple regulators case, but going forward we would need that for other
> use cases as well.
> 
> This patch prepares for that by allocating the regulator specific part
> from dev_pm_opp_set_regulators() and the opp helper part from
> dev_pm_opp_register_set_opp_helper().
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
> Dmitry,
> 
> I haven't tested this patch, can you please help with that ?
> 
>  drivers/opp/core.c | 81 ++++++++++++++++++++++++----------------------
>  drivers/opp/opp.h  |  2 ++
>  2 files changed, 45 insertions(+), 38 deletions(-)

Pushed with this diff.

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 1ed673334565..1dc5ca3f6d26 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1939,7 +1939,6 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
                                            unsigned int count)
 {
        struct dev_pm_opp_supply *supplies;
-       struct dev_pm_set_opp_data *data;
        struct opp_table *opp_table;
        struct regulator *reg;
        int ret, i;
@@ -1990,9 +1989,8 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
        mutex_lock(&opp_table->lock);
        opp_table->sod_supplies = supplies;
        if (opp_table->set_opp_data) {
-               data = opp_table->set_opp_data;
-               data->old_opp.supplies = supplies;
-               data->new_opp.supplies = supplies + count;
+               opp_table->set_opp_data->old_opp.supplies = supplies;
+               opp_table->set_opp_data->new_opp.supplies = supplies + count;
        }
        mutex_unlock(&opp_table->lock);
 
@@ -2038,7 +2036,7 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table)
                regulator_put(opp_table->regulators[i]);
 
        mutex_lock(&opp_table->lock);
-       if (opp_table->sod_supplies) {
+       if (opp_table->set_opp_data) {
                opp_table->set_opp_data->old_opp.supplies = NULL;
                opp_table->set_opp_data->new_opp.supplies = NULL;
        }

-- 
viresh