[PATCH v2 12/14] drm/panfrost: Convert to use resource-managed OPP API

Dmitry Osipenko
2021-03-11T19:22:55Z

Use resource-managed OPP API to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 33 +++++----------------
drivers/gpu/drm/panfrost/panfrost_devfreq.h | 1 -
2 files changed, 8 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 56b3f5935703..eeb50c55c472 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -93,25 +93,23 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
struct thermal_cooling_device *cooling;
struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;

- opp_table = dev_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
- pfdev->comp->num_supplies);
+ opp_table = devm_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
+ pfdev->comp->num_supplies);
if (IS_ERR(opp_table)) {
ret = PTR_ERR(opp_table);
/* Continue if the optional regulator is missing */
if (ret != -ENODEV) {
DRM_DEV_ERROR(dev, "Couldn't set OPP regulators\n");
- goto err_fini;
+ return ret;
}
- } else {
- pfdevfreq->regulators_opp_table = opp_table;
}

- ret = dev_pm_opp_of_add_table(dev);
+ ret = devm_pm_opp_of_add_table(dev);
if (ret) {
/* Optional, continue without devfreq */
if (ret == -ENODEV)
ret = 0;
- goto err_fini;
+ return ret;
}
pfdevfreq->opp_of_table_added = true;

@@ -122,10 +120,8 @@ 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)) {
- ret = PTR_ERR(opp);
- goto err_fini;
- }
+ if (IS_ERR(opp))
+ return PTR_ERR(opp);

panfrost_devfreq_profile.initial_freq = cur_freq;
dev_pm_opp_put(opp);
@@ -134,8 +130,7 @@ 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");
- ret = PTR_ERR(devfreq);
- goto err_fini;
+ return PTR_ERR(devfreq);
}
pfdevfreq->devfreq = devfreq;

@@ -146,10 +141,6 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
pfdevfreq->cooling = cooling;

return 0;
-
-err_fini:
- panfrost_devfreq_fini(pfdev);
- return ret;
}

void panfrost_devfreq_fini(struct panfrost_device *pfdev)
@@ -160,14 +151,6 @@ void panfrost_devfreq_fini(struct panfrost_device *pfdev)
devfreq_cooling_unregister(pfdevfreq->cooling);
pfdevfreq->cooling = NULL;
}
-
- if (pfdevfreq->opp_of_table_added) {
- dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
- pfdevfreq->opp_of_table_added = false;
- }
-
- dev_pm_opp_put_regulators(pfdevfreq->regulators_opp_table);
- pfdevfreq->regulators_opp_table = NULL;
}

void panfrost_devfreq_resume(struct panfrost_device *pfdev)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index db6ea48e21f9..a51854cc8c06 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -15,7 +15,6 @@ struct panfrost_device;

struct panfrost_devfreq {
struct devfreq *devfreq;
- struct opp_table *regulators_opp_table;
struct thermal_cooling_device *cooling;
bool opp_of_table_added;

--
2.29.2