From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Mark Brown <broonie@kernel.org>, Takashi Iwai <tiwai@suse.com>,
Jaroslav Kysela <perex@perex.cz>,
Philipp Zabel <p.zabel@pengutronix.de>,
Paul Fertser <fercerpav@gmail.com>
Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1 1/5] reset: Allow devm_reset_control_array_get() to get resets in a released state
Date: Tue, 2 Mar 2021 14:21:19 +0300 [thread overview]
Message-ID: <20210302112123.24161-2-digetx@gmail.com> (raw)
In-Reply-To: <20210302112123.24161-1-digetx@gmail.com>
Allow devm_reset_control_array_get() to get resets in a released state
in order to make it possible to extend reset-API with resource-managed
variants of retrieving resets array in a released state. In particular
this is needed by NVIDIA Tegra drivers.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/reset/core.c | 8 ++++++--
include/linux/reset.h | 14 ++++++++------
2 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index dbf881b586d9..f36de3d3849b 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -985,6 +985,8 @@ EXPORT_SYMBOL_GPL(of_reset_control_array_get);
* @dev: device that requests the list of reset controls
* @shared: whether reset controls are shared or not
* @optional: whether it is optional to get the reset controls
+ * @acquired: only one reset control may be acquired for a given controller
+ * and ID
*
* The reset control array APIs are intended for a list of resets
* that just have to be asserted or deasserted, without any
@@ -993,7 +995,8 @@ EXPORT_SYMBOL_GPL(of_reset_control_array_get);
* Returns pointer to allocated reset_control on success or error on failure
*/
struct reset_control *
-devm_reset_control_array_get(struct device *dev, bool shared, bool optional)
+devm_reset_control_array_get(struct device *dev, bool shared, bool optional,
+ bool acquired)
{
struct reset_control **ptr, *rstc;
@@ -1002,7 +1005,8 @@ devm_reset_control_array_get(struct device *dev, bool shared, bool optional)
if (!ptr)
return ERR_PTR(-ENOMEM);
- rstc = of_reset_control_array_get(dev->of_node, shared, optional, true);
+ rstc = of_reset_control_array_get(dev->of_node, shared, optional,
+ acquired);
if (IS_ERR_OR_NULL(rstc)) {
devres_free(ptr);
return rstc;
diff --git a/include/linux/reset.h b/include/linux/reset.h
index b9109efa2a5c..3bee086f1f06 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -33,7 +33,8 @@ struct reset_control *__devm_reset_control_get(struct device *dev,
bool optional, bool acquired);
struct reset_control *devm_reset_control_array_get(struct device *dev,
- bool shared, bool optional);
+ bool shared, bool optional,
+ bool acquired);
struct reset_control *of_reset_control_array_get(struct device_node *np,
bool shared, bool optional,
bool acquired);
@@ -105,7 +106,8 @@ static inline struct reset_control *__devm_reset_control_get(
}
static inline struct reset_control *
-devm_reset_control_array_get(struct device *dev, bool shared, bool optional)
+devm_reset_control_array_get(struct device *dev, bool shared, bool optional,
+ bool acquired)
{
return optional ? NULL : ERR_PTR(-ENOTSUPP);
}
@@ -511,25 +513,25 @@ static inline struct reset_control *devm_reset_control_get_by_index(
static inline struct reset_control *
devm_reset_control_array_get_exclusive(struct device *dev)
{
- return devm_reset_control_array_get(dev, false, false);
+ return devm_reset_control_array_get(dev, false, false, true);
}
static inline struct reset_control *
devm_reset_control_array_get_shared(struct device *dev)
{
- return devm_reset_control_array_get(dev, true, false);
+ return devm_reset_control_array_get(dev, true, false, true);
}
static inline struct reset_control *
devm_reset_control_array_get_optional_exclusive(struct device *dev)
{
- return devm_reset_control_array_get(dev, false, true);
+ return devm_reset_control_array_get(dev, false, true, true);
}
static inline struct reset_control *
devm_reset_control_array_get_optional_shared(struct device *dev)
{
- return devm_reset_control_array_get(dev, true, true);
+ return devm_reset_control_array_get(dev, true, true, true);
}
static inline struct reset_control *
--
2.29.2
next prev parent reply other threads:[~2021-03-02 20:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-02 11:21 [PATCH v1 0/5] Add missing reset controls to NVIDIA Tegra ASoC drivers Dmitry Osipenko
2021-03-02 11:21 ` Dmitry Osipenko [this message]
2021-03-02 11:21 ` [PATCH v1 2/5] reset: Add devm_reset_control_array_get_exclusive_released() Dmitry Osipenko
2021-03-02 11:21 ` [PATCH v1 3/5] ASoC: tegra20: ac97: Add reset control Dmitry Osipenko
2021-03-02 11:21 ` [PATCH v1 4/5] ASoC: tegra20: i2s: " Dmitry Osipenko
2021-03-02 11:21 ` [PATCH v1 5/5] ASoC: tegra30: " Dmitry Osipenko
2021-03-03 8:28 ` Dmitry Osipenko
2021-03-03 12:09 ` Philipp Zabel
2021-03-04 9:42 ` Dmitry Osipenko
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