From: Viresh Kumar <viresh.kumar@linaro.org>
To: Dmitry Osipenko <digetx@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Mark Brown <broonie@kernel.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Peter Geis <pgwipeout@gmail.com>,
Nicolas Chauvet <kwizart@gmail.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Kevin Hilman <khilman@kernel.org>,
Peter De Schrijver <pdeschrijver@nvidia.com>,
Viresh Kumar <vireshk@kernel.org>,
Stephen Boyd <sboyd@kernel.org>, Nishanth Menon <nm@ti.com>,
Yangtao Li <tiny.windzz@gmail.com>,
Matt Merhar <mattmerhar@protonmail.com>,
linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-pm@vger.kernel.org
Subject: Re: [PATCH v3 06/12] opp: Add dev_pm_opp_find_level_ceil()
Date: Mon, 18 Jan 2021 15:28:10 +0530 [thread overview]
Message-ID: <20210118095810.ta7cy7kjntalfnx7@vireshk-i7> (raw)
In-Reply-To: <20210118005524.27787-7-digetx@gmail.com>
On 18-01-21, 03:55, Dmitry Osipenko wrote:
> Add a ceil version of the dev_pm_opp_find_level(). It's handy to have if
> levels don't start from 0 in OPP table and zero usually means a minimal
> level.
>
> Tested-by: Peter Geis <pgwipeout@gmail.com>
> Tested-by: Nicolas Chauvet <kwizart@gmail.com>
> Tested-by: Matt Merhar <mattmerhar@protonmail.com>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
> drivers/opp/core.c | 49 ++++++++++++++++++++++++++++++++++++++++++
> include/linux/pm_opp.h | 8 +++++++
> 2 files changed, 57 insertions(+)
>
> diff --git a/drivers/opp/core.c b/drivers/opp/core.c
> index 341484d58e6c..df0969002555 100644
> --- a/drivers/opp/core.c
> +++ b/drivers/opp/core.c
> @@ -449,6 +449,55 @@ struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
> }
> EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact);
>
> +/**
> + * dev_pm_opp_find_level_ceil() - search for an rounded up level
> + * @dev: device for which we do this operation
> + * @level: level to search for
> + *
> + * Return: Searches for rounded up match in the opp table and returns pointer
> + * to the matching opp if found, else returns ERR_PTR in case of error and
> + * should be handled using IS_ERR. Error return values can be:
> + * EINVAL: for bad pointer
> + * ERANGE: no match found for search
> + * ENODEV: if device not found in list of registered devices
> + *
> + * The callers are required to call dev_pm_opp_put() for the returned OPP after
> + * use.
> + */
> +struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
> + unsigned int *level)
> +{
> + struct opp_table *opp_table;
> + struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
> +
> + opp_table = _find_opp_table(dev);
> + if (IS_ERR(opp_table)) {
> + int r = PTR_ERR(opp_table);
> +
> + dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
> + return ERR_PTR(r);
> + }
> +
> + mutex_lock(&opp_table->lock);
> +
> + list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
> + if (temp_opp->available && temp_opp->level >= *level) {
> + opp = temp_opp;
> + *level = opp->level;
> +
> + /* Increment the reference count of OPP */
> + dev_pm_opp_get(opp);
> + break;
> + }
> + }
> +
> + mutex_unlock(&opp_table->lock);
> + dev_pm_opp_put_opp_table(opp_table);
> +
> + return opp;
> +}
> +EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
> +
> static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
> unsigned long *freq)
> {
> diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
> index f344be844bde..b7dc993487c7 100644
> --- a/include/linux/pm_opp.h
> +++ b/include/linux/pm_opp.h
> @@ -111,6 +111,8 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
> bool available);
> struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
> unsigned int level);
> +struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
> + unsigned int *level);
>
> struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
> unsigned long *freq);
> @@ -234,6 +236,12 @@ static inline struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
> return ERR_PTR(-ENOTSUPP);
> }
>
> +static inline struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
> + unsigned int *level)
> +{
> + return ERR_PTR(-ENOTSUPP);
> +}
> +
> static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
> unsigned long *freq)
> {
Applied. Thanks.
--
viresh
next prev parent reply other threads:[~2021-01-18 21:43 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 0:55 [PATCH v3 00/12] OPP API fixes and improvements Dmitry Osipenko
2021-01-18 0:55 ` [PATCH v3 01/12] opp: Fix adding OPP entries in a wrong order if rate is unavailable Dmitry Osipenko
2021-01-18 7:44 ` Viresh Kumar
2021-01-18 18:46 ` Dmitry Osipenko
2021-01-18 0:55 ` [PATCH v3 02/12] opp: Filter out OPPs based on availability of a required-OPP Dmitry Osipenko
2021-01-18 8:11 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 03/12] opp: Correct debug message in _opp_add_static_v2() Dmitry Osipenko
2021-01-18 8:14 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 04/12] opp: Add dev_pm_opp_sync_regulators() Dmitry Osipenko
2021-01-18 8:20 ` Viresh Kumar
2021-01-18 18:35 ` Dmitry Osipenko
2021-01-19 4:58 ` Viresh Kumar
2021-01-19 22:42 ` Dmitry Osipenko
2021-01-18 11:00 ` Viresh Kumar
2021-01-18 11:06 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 05/12] opp: Add dev_pm_opp_set_voltage() Dmitry Osipenko
2021-01-18 9:52 ` Viresh Kumar
2021-01-18 19:14 ` Dmitry Osipenko
2021-01-20 21:57 ` Dmitry Osipenko
2021-01-21 11:20 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 06/12] opp: Add dev_pm_opp_find_level_ceil() Dmitry Osipenko
2021-01-18 9:58 ` Viresh Kumar [this message]
2021-01-18 0:55 ` [PATCH v3 07/12] opp: Add dev_pm_opp_get_required_pstate() Dmitry Osipenko
2021-01-18 10:50 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 08/12] opp: Add devm_pm_opp_register_set_opp_helper Dmitry Osipenko
2021-01-18 11:07 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 09/12] opp: Add devm_pm_opp_attach_genpd Dmitry Osipenko
2021-01-18 11:14 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 10/12] opp: Support set_opp() customization without requiring to use regulators Dmitry Osipenko
2021-01-18 11:44 ` Viresh Kumar
2021-01-18 18:48 ` Dmitry Osipenko
2021-01-19 6:35 ` [PATCH] opp: Prepare for ->set_opp() helper to work without regulators Viresh Kumar
2021-01-19 17:16 ` Dmitry Osipenko
2021-01-20 7:39 ` Viresh Kumar
2021-01-20 14:50 ` Dmitry Osipenko
2021-01-21 11:25 ` Viresh Kumar
2021-01-19 17:18 ` Dmitry Osipenko
2021-01-20 8:08 ` Viresh Kumar
2021-01-21 11:28 ` Viresh Kumar
2021-01-19 6:36 ` [PATCH v3 10/12] opp: Support set_opp() customization without requiring to use regulators Viresh Kumar
2021-01-21 11:30 ` [PATCH V2] opp: Prepare for ->set_opp() helper to work without regulators Viresh Kumar
2021-01-21 21:02 ` Dmitry Osipenko
2021-01-22 3:05 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 11/12] opp: Handle missing OPP table in dev_pm_opp_xlate_performance_state() Dmitry Osipenko
2021-01-18 11:18 ` Viresh Kumar
2021-01-18 0:55 ` [PATCH v3 12/12] opp: Print OPP level in debug message of _opp_add_static_v2() Dmitry Osipenko
2021-01-18 11:18 ` Viresh Kumar
2021-01-18 11:46 ` [PATCH v3 00/12] OPP API fixes and improvements Viresh Kumar
2021-01-19 17:35 ` Dmitry Osipenko
2021-01-20 15:41 ` Dmitry Osipenko
2021-01-21 7:51 ` Viresh Kumar
2021-01-21 20:30 ` Dmitry Osipenko
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