From: Dmitry Osipenko <digetx@gmail.com>
To: 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>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Peter Geis <pgwipeout@gmail.com>,
Nicolas Chauvet <kwizart@gmail.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
"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>,
Michael Turquette <mturquette@baylibre.com>
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-media@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-clk@vger.kernel.org
Subject: [PATCH v2 10/48] opp: Add dev_pm_opp_set_voltage()
Date: Thu, 17 Dec 2020 21:06:00 +0300 [thread overview]
Message-ID: <20201217180638.22748-11-digetx@gmail.com> (raw)
In-Reply-To: <20201217180638.22748-1-digetx@gmail.com>
Add dev_pm_opp_set_voltage() which allows OPP table users to set voltage
in accordance to a given OPP. In particular this is needed for driving
voltage of a generic power domain which uses OPPs and doesn't have a
clock.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/opp/core.c | 52 ++++++++++++++++++++++++++++++++++++++++++
include/linux/pm_opp.h | 11 +++++----
2 files changed, 58 insertions(+), 5 deletions(-)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 500d6c716283..eab37b3a27bb 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -2541,3 +2541,55 @@ int dev_pm_opp_sync_regulators(struct device *dev)
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_sync_regulators);
+
+/**
+ * dev_pm_opp_set_voltage() - Change voltage of regulators
+ * @dev: device for which we do this operation
+ * @opp: opp based on which the voltages are to be configured
+ *
+ * Change voltage of the OPP table regulators.
+ *
+ * Return: 0 on success or a negative error value.
+ */
+int dev_pm_opp_set_voltage(struct device *dev, struct dev_pm_opp *opp)
+{
+ struct opp_table *opp_table;
+ struct regulator *reg;
+ int ret = 0;
+
+ /* Device may not have OPP table */
+ opp_table = _find_opp_table(dev);
+ if (IS_ERR(opp_table))
+ return 0;
+
+ /* Regulator may not be required for the device */
+ if (!opp_table->regulators)
+ goto put_table;
+
+ /* This function only supports single regulator per device */
+ if (WARN_ON(opp_table->regulator_count > 1)) {
+ dev_err(dev, "multiple regulators are not supported\n");
+ ret = -EINVAL;
+ goto put_table;
+ }
+
+ reg = opp_table->regulators[0];
+ ret = _set_opp_voltage(dev, reg, opp->supplies);
+
+ if (!opp_table->enabled) {
+ ret = regulator_enable(reg);
+ if (ret < 0) {
+ dev_warn(dev, "Failed to enable regulator: %d", ret);
+ goto put_table;
+ }
+
+ opp_table->enabled = true;
+ }
+
+put_table:
+ /* Drop reference taken by _find_opp_table() */
+ dev_pm_opp_put_opp_table(opp_table);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_set_voltage);
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 4c79faa2025e..f311a8b2ca04 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -157,6 +157,7 @@ int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
void dev_pm_opp_remove_table(struct device *dev);
void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
int dev_pm_opp_sync_regulators(struct device *dev);
+int dev_pm_opp_set_voltage(struct device *dev, struct dev_pm_opp *opp);
#else
static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
{
@@ -372,6 +373,11 @@ static inline int dev_pm_opp_sync_regulators(struct device *dev)
return -ENOTSUPP;
}
+static inline int dev_pm_opp_set_voltage(struct device *dev, struct dev_pm_opp *opp)
+{
+ return -ENOTSUPP;
+}
+
#endif /* CONFIG_PM_OPP */
#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
@@ -448,11 +454,6 @@ static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_ta
{
return -ENOTSUPP;
}
-
-static inline int dev_pm_opp_sync_regulators(struct device *dev)
-{
- return -ENOTSUPP;
-}
#endif
#endif /* __LINUX_OPP_H__ */
--
2.29.2
next prev parent reply other threads:[~2020-12-17 18:14 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-17 18:05 [PATCH v2 00/48] Introduce core voltage scaling for NVIDIA Tegra20/30 SoCs Dmitry Osipenko
2020-12-17 18:05 ` [PATCH v2 01/48] dt-bindings: memory: tegra20: emc: Replace core regulator with power domain Dmitry Osipenko
2020-12-21 22:53 ` Rob Herring
2020-12-17 18:05 ` [PATCH v2 02/48] dt-bindings: memory: tegra30: " Dmitry Osipenko
2020-12-21 22:54 ` Rob Herring
2020-12-22 19:16 ` Dmitry Osipenko
2020-12-17 18:05 ` [PATCH v2 03/48] dt-bindings: memory: tegra124: " Dmitry Osipenko
2020-12-17 18:05 ` [PATCH v2 04/48] dt-bindings: host1x: Document OPP and power domain properties Dmitry Osipenko
2020-12-22 0:09 ` Rob Herring
2020-12-17 18:05 ` [PATCH v2 05/48] media: dt: bindings: tegra-vde: " Dmitry Osipenko
2020-12-22 0:09 ` Rob Herring
2020-12-17 18:05 ` [PATCH v2 06/48] dt-bindings: clock: tegra: Document clocks sub-node Dmitry Osipenko
2020-12-22 0:14 ` Rob Herring
2020-12-22 19:16 ` Dmitry Osipenko
2020-12-17 18:05 ` [PATCH v2 07/48] dt-bindings: arm: tegra: Add binding for core power domain Dmitry Osipenko
2020-12-19 10:57 ` Krzysztof Kozlowski
2020-12-20 18:26 ` Dmitry Osipenko
2020-12-17 18:05 ` [PATCH v2 08/48] regulator: Make regulator_sync_voltage() usable by coupled regulators Dmitry Osipenko
2020-12-17 18:05 ` [PATCH v2 09/48] opp: Add dev_pm_opp_sync_regulators() Dmitry Osipenko
2020-12-22 6:41 ` Viresh Kumar
2020-12-17 18:06 ` Dmitry Osipenko [this message]
2020-12-22 6:41 ` [PATCH v2 10/48] opp: Add dev_pm_opp_set_voltage() Viresh Kumar
2020-12-17 18:06 ` [PATCH v2 11/48] opp: Add dev_pm_opp_find_level_ceil() Dmitry Osipenko
2020-12-22 6:42 ` Viresh Kumar
2020-12-22 19:15 ` Dmitry Osipenko
2020-12-23 4:19 ` Viresh Kumar
2020-12-23 20:37 ` Dmitry Osipenko
2020-12-24 6:43 ` Viresh Kumar
2020-12-24 13:00 ` Dmitry Osipenko
2020-12-28 6:22 ` Viresh Kumar
2020-12-28 14:03 ` Dmitry Osipenko
2020-12-30 4:46 ` Viresh Kumar
2020-12-30 14:02 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 12/48] opp: Add dev_pm_opp_get_required_pstate() Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 13/48] opp: Add resource-managed versions of OPP API functions Dmitry Osipenko
2020-12-22 8:55 ` Viresh Kumar
2020-12-22 19:14 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 14/48] opp: Filter out OPPs based on availability of a required-OPP Dmitry Osipenko
2020-12-22 8:59 ` Viresh Kumar
2020-12-22 19:17 ` Dmitry Osipenko
2020-12-23 4:22 ` Viresh Kumar
2020-12-23 20:48 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 15/48] opp: Support set_opp() customization without requiring to use regulators Dmitry Osipenko
2020-12-22 9:01 ` Viresh Kumar
2020-12-22 19:18 ` Dmitry Osipenko
2020-12-23 6:01 ` Viresh Kumar
2020-12-23 20:38 ` Dmitry Osipenko
2020-12-24 4:10 ` Viresh Kumar
2020-12-24 12:16 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 16/48] opp: Handle missing OPP table in dev_pm_opp_xlate_performance_state() Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 17/48] opp: Correct debug message in _opp_add_static_v2() Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 18/48] opp: Print OPP level in debug message of _opp_add_static_v2() Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 19/48] opp: Fix adding OPP entries in a wrong order if rate is unavailable Dmitry Osipenko
2020-12-22 9:12 ` Viresh Kumar
2020-12-22 19:19 ` Dmitry Osipenko
2020-12-23 4:34 ` Viresh Kumar
2020-12-23 20:36 ` Dmitry Osipenko
2020-12-24 6:28 ` Viresh Kumar
2020-12-24 12:14 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 20/48] PM: domains: Make set_performance_state() callback optional Dmitry Osipenko
2021-01-11 9:10 ` Ulf Hansson
2020-12-17 18:06 ` [PATCH v2 21/48] PM: domains: Add "performance" column to debug summary Dmitry Osipenko
2021-01-11 9:13 ` Ulf Hansson
2021-01-11 11:28 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 22/48] soc/tegra: pmc: Fix imbalanced clock disabling in error code path Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 23/48] soc/tegra: pmc: Pulse resets after removing power clamp Dmitry Osipenko
2020-12-30 14:56 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 24/48] soc/tegra: pmc: Ensure that clock rates aren't too high Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 25/48] soc/tegra: pmc: Print out domain name when reset fails to acquire Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 26/48] soc/tegra: Add devm_tegra_core_dev_init_opp_table() Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 27/48] soc/tegra: Add CONFIG_SOC_TEGRA_COMMON and select PM_OPP by default Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 28/48] soc/tegra: Introduce core power domain driver Dmitry Osipenko
2020-12-22 6:40 ` Viresh Kumar
2020-12-22 19:21 ` Dmitry Osipenko
2020-12-22 19:39 ` Dmitry Osipenko
2020-12-23 5:57 ` Viresh Kumar
2020-12-23 20:37 ` Dmitry Osipenko
2020-12-23 20:59 ` Dmitry Osipenko
2020-12-24 6:51 ` Viresh Kumar
2020-12-24 12:14 ` Dmitry Osipenko
2021-01-12 13:57 ` Ulf Hansson
2020-12-17 18:06 ` [PATCH v2 29/48] soc/tegra: pmc: Link domains to the parent Core domain Dmitry Osipenko
2021-01-12 13:30 ` Ulf Hansson
2021-01-12 16:22 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 30/48] soc/tegra: regulators: Fix locking up when voltage-spread is out of range Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 31/48] soc/tegra: regulators: Support Core domain state syncing Dmitry Osipenko
2021-01-12 13:57 ` Ulf Hansson
2020-12-17 18:06 ` [PATCH v2 32/48] clk: tegra: Support runtime PM, power domain and OPP Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 33/48] gpu: host1x: Add host1x_channel_stop() Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 34/48] gpu: host1x: Support power management Dmitry Osipenko
2020-12-17 18:21 ` Mikko Perttunen
2020-12-17 18:45 ` Dmitry Osipenko
2020-12-17 20:58 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 35/48] drm/tegra: dc: Support OPP and SoC core voltage scaling Dmitry Osipenko
2021-01-12 14:16 ` Ulf Hansson
2020-12-17 18:06 ` [PATCH v2 36/48] drm/tegra: gr2d: Correct swapped device-tree compatibles Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 37/48] drm/tegra: gr2d: Support OPP and power management Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 38/48] drm/tegra: g3d: " Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 39/48] drm/tegra: vic: Stop channel before suspending Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 40/48] media: staging: tegra-vde: Support OPP and generic power domain Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 41/48] memory: tegra20-emc: Use devm_tegra_core_dev_init_opp_table() Dmitry Osipenko
2020-12-19 11:02 ` Krzysztof Kozlowski
2020-12-20 18:34 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 42/48] memory: tegra30-emc: " Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 43/48] ARM: tegra: Add OPP tables and power domains to Tegra20 device-tree Dmitry Osipenko
2020-12-22 5:47 ` Viresh Kumar
2020-12-22 19:24 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 44/48] ARM: tegra: Add OPP tables and power domains to Tegra30 device-tree Dmitry Osipenko
2020-12-22 9:14 ` Viresh Kumar
2020-12-22 19:25 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 45/48] ARM: tegra: acer-a500: Enable core voltage scaling Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 46/48] ARM: tegra: ventana: " Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 47/48] ARM: tegra: ventana: Support CPU voltage scaling and thermal throttling Dmitry Osipenko
2020-12-17 18:28 ` Daniel Lezcano
2020-12-17 19:01 ` Dmitry Osipenko
2020-12-17 19:36 ` Daniel Lezcano
2020-12-17 20:28 ` Dmitry Osipenko
2020-12-17 21:19 ` Daniel Lezcano
2020-12-17 21:56 ` Dmitry Osipenko
2020-12-17 18:06 ` [PATCH v2 48/48] ARM: tegra: cardhu: " Dmitry Osipenko
2020-12-17 18:28 ` Daniel Lezcano
2020-12-18 7:14 ` [PATCH v2 00/48] Introduce core voltage scaling for NVIDIA Tegra20/30 SoCs Viresh Kumar
2020-12-18 13:51 ` Dmitry Osipenko
2020-12-22 9:15 ` Viresh Kumar
2020-12-22 19:14 ` Dmitry Osipenko
2021-01-05 17:11 ` Krzysztof Kozlowski
2021-01-07 19:39 ` Dmitry Osipenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201217180638.22748-11-digetx@gmail.com \
--to=digetx@gmail.com \
--cc=broonie@kernel.org \
--cc=devel@driverdev.osuosl.org \
--cc=devicetree@vger.kernel.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=jonathanh@nvidia.com \
--cc=khilman@kernel.org \
--cc=krzk@kernel.org \
--cc=kwizart@gmail.com \
--cc=lgirdwood@gmail.com \
--cc=linux-clk@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=mchehab@kernel.org \
--cc=mturquette@baylibre.com \
--cc=pdeschrijver@nvidia.com \
--cc=pgwipeout@gmail.com \
--cc=rjw@rjwysocki.net \
--cc=robh+dt@kernel.org \
--cc=sboyd@kernel.org \
--cc=thierry.reding@gmail.com \
--cc=ulf.hansson@linaro.org \
--cc=vireshk@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).