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From: "Clément Péron" <peron.clem@gmail.com>
To: Rob Herring <robh@kernel.org>,
	Tomeu Vizoso <tomeu.vizoso@collabora.com>,
	Steven Price <steven.price@arm.com>,
	Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
	Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
	Stephen Boyd <sboyd@kernel.org>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	"Clément Péron" <peron.clem@gmail.com>
Subject: [PATCH v2 2/2] drm/panfrost: add devfreq regulator support
Date: Mon, 13 Apr 2020 19:33:38 +0200	[thread overview]
Message-ID: <20200413173338.8294-2-peron.clem@gmail.com> (raw)
In-Reply-To: <20200413173338.8294-1-peron.clem@gmail.com>

OPP table can defined both frequency and voltage.

Register mali regulators to OPP driver.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
---
 drivers/gpu/drm/panfrost/panfrost_devfreq.c | 34 ++++++++++++++++++---
 drivers/gpu/drm/panfrost/panfrost_device.h  |  1 +
 2 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 62541f4edd81..54a109bbdc18 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -78,12 +78,26 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 	struct device *dev = &pfdev->pdev->dev;
 	struct devfreq *devfreq;
 	struct thermal_cooling_device *cooling;
+	struct opp_table *opp_table;
+
+	/* Regulator is optional */
+	opp_table = dev_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
+					      pfdev->comp->num_supplies);
+	if (IS_ERR(opp_table)) {
+		ret = PTR_ERR(opp_table);
+		if (ret != -ENODEV) {
+			DRM_DEV_ERROR(dev, "Failed to set regulator: %d\n", ret);
+			return ret;
+		}
+	}
+	pfdev->devfreq.opp_table = opp_table;
 
 	ret = dev_pm_opp_of_add_table(dev);
-	if (ret == -ENODEV) /* Optional, continue without devfreq */
-		return 0;
-	else if (ret)
-		return ret;
+	if (ret) {
+		if (ret == -ENODEV) /* Optional, continue without devfreq */
+			ret = 0;
+		goto err_opp_reg;
+	}
 
 	panfrost_devfreq_reset(pfdev);
 
@@ -119,6 +133,12 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 err_opp:
 	dev_pm_opp_of_remove_table(dev);
 
+err_opp_reg:
+	if (pfdev->devfreq.opp_table) {
+		dev_pm_opp_put_regulators(pfdev->devfreq.opp_table);
+		pfdev->devfreq.opp_table = NULL;
+	}
+
 	return ret;
 }
 
@@ -126,7 +146,13 @@ void panfrost_devfreq_fini(struct panfrost_device *pfdev)
 {
 	if (pfdev->devfreq.cooling)
 		devfreq_cooling_unregister(pfdev->devfreq.cooling);
+
 	dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
+
+	if (pfdev->devfreq.opp_table) {
+		dev_pm_opp_put_regulators(pfdev->devfreq.opp_table);
+		pfdev->devfreq.opp_table = NULL;
+	}
 }
 
 void panfrost_devfreq_resume(struct panfrost_device *pfdev)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index c30c719a8059..c11d19430c0f 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -110,6 +110,7 @@ struct panfrost_device {
 	struct {
 		struct devfreq *devfreq;
 		struct thermal_cooling_device *cooling;
+		struct opp_table *opp_table;
 		ktime_t busy_time;
 		ktime_t idle_time;
 		ktime_t time_last_update;
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
From: "Clément Péron" <peron.clem@gmail.com>
To: Rob Herring <robh@kernel.org>,
	Tomeu Vizoso <tomeu.vizoso@collabora.com>,
	Steven Price <steven.price@arm.com>,
	Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
	Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
	Stephen Boyd <sboyd@kernel.org>
Cc: "Clément Péron" <peron.clem@gmail.com>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH v2 2/2] drm/panfrost: add devfreq regulator support
Date: Mon, 13 Apr 2020 19:33:38 +0200	[thread overview]
Message-ID: <20200413173338.8294-2-peron.clem@gmail.com> (raw)
In-Reply-To: <20200413173338.8294-1-peron.clem@gmail.com>

OPP table can defined both frequency and voltage.

Register mali regulators to OPP driver.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
---
 drivers/gpu/drm/panfrost/panfrost_devfreq.c | 34 ++++++++++++++++++---
 drivers/gpu/drm/panfrost/panfrost_device.h  |  1 +
 2 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 62541f4edd81..54a109bbdc18 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -78,12 +78,26 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 	struct device *dev = &pfdev->pdev->dev;
 	struct devfreq *devfreq;
 	struct thermal_cooling_device *cooling;
+	struct opp_table *opp_table;
+
+	/* Regulator is optional */
+	opp_table = dev_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
+					      pfdev->comp->num_supplies);
+	if (IS_ERR(opp_table)) {
+		ret = PTR_ERR(opp_table);
+		if (ret != -ENODEV) {
+			DRM_DEV_ERROR(dev, "Failed to set regulator: %d\n", ret);
+			return ret;
+		}
+	}
+	pfdev->devfreq.opp_table = opp_table;
 
 	ret = dev_pm_opp_of_add_table(dev);
-	if (ret == -ENODEV) /* Optional, continue without devfreq */
-		return 0;
-	else if (ret)
-		return ret;
+	if (ret) {
+		if (ret == -ENODEV) /* Optional, continue without devfreq */
+			ret = 0;
+		goto err_opp_reg;
+	}
 
 	panfrost_devfreq_reset(pfdev);
 
@@ -119,6 +133,12 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 err_opp:
 	dev_pm_opp_of_remove_table(dev);
 
+err_opp_reg:
+	if (pfdev->devfreq.opp_table) {
+		dev_pm_opp_put_regulators(pfdev->devfreq.opp_table);
+		pfdev->devfreq.opp_table = NULL;
+	}
+
 	return ret;
 }
 
@@ -126,7 +146,13 @@ void panfrost_devfreq_fini(struct panfrost_device *pfdev)
 {
 	if (pfdev->devfreq.cooling)
 		devfreq_cooling_unregister(pfdev->devfreq.cooling);
+
 	dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
+
+	if (pfdev->devfreq.opp_table) {
+		dev_pm_opp_put_regulators(pfdev->devfreq.opp_table);
+		pfdev->devfreq.opp_table = NULL;
+	}
 }
 
 void panfrost_devfreq_resume(struct panfrost_device *pfdev)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index c30c719a8059..c11d19430c0f 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -110,6 +110,7 @@ struct panfrost_device {
 	struct {
 		struct devfreq *devfreq;
 		struct thermal_cooling_device *cooling;
+		struct opp_table *opp_table;
 		ktime_t busy_time;
 		ktime_t idle_time;
 		ktime_t time_last_update;
-- 
2.20.1

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  reply	other threads:[~2020-04-13 17:33 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-13 17:33 [PATCH v2 1/2] drm/panfrost: missing remove opp table in case of failure Clément Péron
2020-04-13 17:33 ` Clément Péron
2020-04-13 17:33 ` Clément Péron [this message]
2020-04-13 17:33   ` [PATCH v2 2/2] drm/panfrost: add devfreq regulator support Clément Péron

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