* [PATCH v2 1/2] drm/panfrost: missing remove opp table in case of failure
@ 2020-04-13 17:33 ` Clément Péron
0 siblings, 0 replies; 4+ messages in thread
From: Clément Péron @ 2020-04-13 17:33 UTC (permalink / raw)
To: Rob Herring, Tomeu Vizoso, Steven Price, Alyssa Rosenzweig,
Viresh Kumar, Nishanth Menon, Stephen Boyd
Cc: dri-devel, linux-kernel, Clément Péron
In case of failure we need to remove OPP table.
Use Linux classic error handling with goto usage.
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 413987038fbf..62541f4edd81 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -90,8 +90,11 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
cur_freq = clk_get_rate(pfdev->clock);
opp = devfreq_recommended_opp(dev, &cur_freq, 0);
- if (IS_ERR(opp))
- return PTR_ERR(opp);
+ if (IS_ERR(opp)) {
+ DRM_DEV_ERROR(dev, "Failed to set recommended OPP\n");
+ ret = PTR_ERR(opp);
+ goto err_opp;
+ }
panfrost_devfreq_profile.initial_freq = cur_freq;
dev_pm_opp_put(opp);
@@ -100,8 +103,8 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
DEVFREQ_GOV_SIMPLE_ONDEMAND, NULL);
if (IS_ERR(devfreq)) {
DRM_DEV_ERROR(dev, "Couldn't initialize GPU devfreq\n");
- dev_pm_opp_of_remove_table(dev);
- return PTR_ERR(devfreq);
+ ret = PTR_ERR(devfreq);
+ goto err_opp;
}
pfdev->devfreq.devfreq = devfreq;
@@ -112,6 +115,11 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
pfdev->devfreq.cooling = cooling;
return 0;
+
+err_opp:
+ dev_pm_opp_of_remove_table(dev);
+
+ return ret;
}
void panfrost_devfreq_fini(struct panfrost_device *pfdev)
--
2.20.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v2 1/2] drm/panfrost: missing remove opp table in case of failure
@ 2020-04-13 17:33 ` Clément Péron
0 siblings, 0 replies; 4+ messages in thread
From: Clément Péron @ 2020-04-13 17:33 UTC (permalink / raw)
To: Rob Herring, Tomeu Vizoso, Steven Price, Alyssa Rosenzweig,
Viresh Kumar, Nishanth Menon, Stephen Boyd
Cc: Clément Péron, linux-kernel, dri-devel
In case of failure we need to remove OPP table.
Use Linux classic error handling with goto usage.
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 413987038fbf..62541f4edd81 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -90,8 +90,11 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
cur_freq = clk_get_rate(pfdev->clock);
opp = devfreq_recommended_opp(dev, &cur_freq, 0);
- if (IS_ERR(opp))
- return PTR_ERR(opp);
+ if (IS_ERR(opp)) {
+ DRM_DEV_ERROR(dev, "Failed to set recommended OPP\n");
+ ret = PTR_ERR(opp);
+ goto err_opp;
+ }
panfrost_devfreq_profile.initial_freq = cur_freq;
dev_pm_opp_put(opp);
@@ -100,8 +103,8 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
DEVFREQ_GOV_SIMPLE_ONDEMAND, NULL);
if (IS_ERR(devfreq)) {
DRM_DEV_ERROR(dev, "Couldn't initialize GPU devfreq\n");
- dev_pm_opp_of_remove_table(dev);
- return PTR_ERR(devfreq);
+ ret = PTR_ERR(devfreq);
+ goto err_opp;
}
pfdev->devfreq.devfreq = devfreq;
@@ -112,6 +115,11 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
pfdev->devfreq.cooling = cooling;
return 0;
+
+err_opp:
+ dev_pm_opp_of_remove_table(dev);
+
+ return ret;
}
void panfrost_devfreq_fini(struct panfrost_device *pfdev)
--
2.20.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v2 2/2] drm/panfrost: add devfreq regulator support
2020-04-13 17:33 ` Clément Péron
@ 2020-04-13 17:33 ` Clément Péron
-1 siblings, 0 replies; 4+ messages in thread
From: Clément Péron @ 2020-04-13 17:33 UTC (permalink / raw)
To: Rob Herring, Tomeu Vizoso, Steven Price, Alyssa Rosenzweig,
Viresh Kumar, Nishanth Menon, Stephen Boyd
Cc: dri-devel, linux-kernel, Clément Péron
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
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v2 2/2] drm/panfrost: add devfreq regulator support
@ 2020-04-13 17:33 ` Clément Péron
0 siblings, 0 replies; 4+ messages in thread
From: Clément Péron @ 2020-04-13 17:33 UTC (permalink / raw)
To: Rob Herring, Tomeu Vizoso, Steven Price, Alyssa Rosenzweig,
Viresh Kumar, Nishanth Menon, Stephen Boyd
Cc: Clément Péron, linux-kernel, dri-devel
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
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-04-14 7:07 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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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 ` [PATCH v2 2/2] drm/panfrost: add devfreq regulator support Clément Péron
2020-04-13 17:33 ` Clément Péron
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