linux-kernel - [PATCH v6 4/4] PM / devfreq: lima: Use devfreq cooling device registration

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Date:   Mon,  8 Mar 2021 14:30:40 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     cwchoi00@...il.com
Cc:     lukasz.luba@....com, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, steven.price@....com,
        Qiang Yu <yuq825@...il.com>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS FOR LIMA),
        lima@...ts.freedesktop.org (moderated list:DRM DRIVERS FOR LIMA)
Subject: [PATCH v6 4/4] PM / devfreq: lima: Use devfreq cooling device registration

The devfreq core code is able to register the devfreq device as a
cooling device if the 'is_cooling_device' flag is set in the profile.

Use this flag and remove the cooling device registering code.

Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/gpu/drm/lima/lima_devfreq.c | 14 +-------------
 drivers/gpu/drm/lima/lima_devfreq.h |  2 --
 2 files changed, 1 insertion(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/lima/lima_devfreq.c b/drivers/gpu/drm/lima/lima_devfreq.c
index 5686ad4aaf7c..86aea1bdc4f4 100644
--- a/drivers/gpu/drm/lima/lima_devfreq.c
+++ b/drivers/gpu/drm/lima/lima_devfreq.c
@@ -7,7 +7,6 @@
  */
 #include <linux/clk.h>
 #include <linux/devfreq.h>
-#include <linux/devfreq_cooling.h>
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
@@ -84,17 +83,13 @@ static struct devfreq_dev_profile lima_devfreq_profile = {
 	.polling_ms = 50, /* ~3 frames */
 	.target = lima_devfreq_target,
 	.get_dev_status = lima_devfreq_get_dev_status,
+	.is_cooling_device = true,
 };
 
 void lima_devfreq_fini(struct lima_device *ldev)
 {
 	struct lima_devfreq *devfreq = &ldev->devfreq;
 
-	if (devfreq->cooling) {
-		devfreq_cooling_unregister(devfreq->cooling);
-		devfreq->cooling = NULL;
-	}
-
 	if (devfreq->devfreq) {
 		devm_devfreq_remove_device(ldev->dev, devfreq->devfreq);
 		devfreq->devfreq = NULL;
@@ -110,7 +105,6 @@ void lima_devfreq_fini(struct lima_device *ldev)
 
 int lima_devfreq_init(struct lima_device *ldev)
 {
-	struct thermal_cooling_device *cooling;
 	struct device *dev = ldev->dev;
 	struct opp_table *opp_table;
 	struct devfreq *devfreq;
@@ -173,12 +167,6 @@ int lima_devfreq_init(struct lima_device *ldev)
 
 	ldevfreq->devfreq = devfreq;
 
-	cooling = of_devfreq_cooling_register(dev->of_node, devfreq);
-	if (IS_ERR(cooling))
-		dev_info(dev, "Failed to register cooling device\n");
-	else
-		ldevfreq->cooling = cooling;
-
 	return 0;
 
 err_fini:
diff --git a/drivers/gpu/drm/lima/lima_devfreq.h b/drivers/gpu/drm/lima/lima_devfreq.h
index 2d9b3008ce77..c43a2069e5d3 100644
--- a/drivers/gpu/drm/lima/lima_devfreq.h
+++ b/drivers/gpu/drm/lima/lima_devfreq.h
@@ -9,7 +9,6 @@
 
 struct devfreq;
 struct opp_table;
-struct thermal_cooling_device;
 
 struct lima_device;
 
@@ -17,7 +16,6 @@ struct lima_devfreq {
 	struct devfreq *devfreq;
 	struct opp_table *clkname_opp_table;
 	struct opp_table *regulators_opp_table;
-	struct thermal_cooling_device *cooling;
 
 	ktime_t busy_time;
 	ktime_t idle_time;
-- 
2.17.1