linux-kernel - [PATCH 08/15] drm/panfrost: move devfreq

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Message-Id: <20200510165538.19720-9-peron.clem@gmail.com>
Date:   Sun, 10 May 2020 18:55:31 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Rob Herring <robh@...nel.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Steven Price <steven.price@....com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Clément Péron <peron.clem@...il.com>
Subject: [PATCH 08/15] drm/panfrost: move devfreq_init()/fini() in device

Later we will introduce devfreq probing regulator if they
are present. As regulator should be probe only one time we
need to get this logic in the device_init().

panfrost_device is already taking care of devfreq_resume()
and devfreq_suspend(), so it's not totally illogic to move
the devfreq_init() and devfreq_fini() here.

Signed-off-by: Clément Péron <peron.clem@...il.com>
---
 drivers/gpu/drm/panfrost/panfrost_device.c | 37 ++++++++++++++--------
 drivers/gpu/drm/panfrost/panfrost_drv.c    | 15 ++-------
 2 files changed, 25 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c
index 8136babd3ba9..f480127205d6 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.c
+++ b/drivers/gpu/drm/panfrost/panfrost_device.c
@@ -212,59 +212,67 @@ int panfrost_device_init(struct panfrost_device *pfdev)
 		return err;
 	}
 
+	err = panfrost_devfreq_init(pfdev);
+	if (err) {
+		dev_err(pfdev->dev, "devfreq init failed %d\n", err);
+		goto err_out0;
+	}
+
 	err = panfrost_regulator_init(pfdev);
 	if (err) {
 		dev_err(pfdev->dev, "regulator init failed %d\n", err);
-		goto err_out0;
+		goto err_out1;
 	}
 
 	err = panfrost_reset_init(pfdev);
 	if (err) {
 		dev_err(pfdev->dev, "reset init failed %d\n", err);
-		goto err_out1;
+		goto err_out2;
 	}
 
 	err = panfrost_pm_domain_init(pfdev);
 	if (err)
-		goto err_out2;
+		goto err_out3;
 
 	res = platform_get_resource(pfdev->pdev, IORESOURCE_MEM, 0);
 	pfdev->iomem = devm_ioremap_resource(pfdev->dev, res);
 	if (IS_ERR(pfdev->iomem)) {
 		dev_err(pfdev->dev, "failed to ioremap iomem\n");
 		err = PTR_ERR(pfdev->iomem);
-		goto err_out3;
+		goto err_out4;
 	}
 
 	err = panfrost_gpu_init(pfdev);
 	if (err)
-		goto err_out3;
+		goto err_out4;
 
 	err = panfrost_mmu_init(pfdev);
 	if (err)
-		goto err_out4;
+		goto err_out5;
 
 	err = panfrost_job_init(pfdev);
 	if (err)
-		goto err_out5;
+		goto err_out6;
 
 	err = panfrost_perfcnt_init(pfdev);
 	if (err)
-		goto err_out6;
+		goto err_out7;
 
 	return 0;
-err_out6:
+err_out7:
 	panfrost_job_fini(pfdev);
-err_out5:
+err_out6:
 	panfrost_mmu_fini(pfdev);
-err_out4:
+err_out5:
 	panfrost_gpu_fini(pfdev);
-err_out3:
+err_out4:
 	panfrost_pm_domain_fini(pfdev);
-err_out2:
+err_out3:
 	panfrost_reset_fini(pfdev);
-err_out1:
+err_out2:
 	panfrost_regulator_fini(pfdev);
+err_out1:
+	panfrost_devfreq_fini(pfdev);
 err_out0:
 	panfrost_clk_fini(pfdev);
 	return err;
@@ -278,6 +286,7 @@ void panfrost_device_fini(struct panfrost_device *pfdev)
 	panfrost_gpu_fini(pfdev);
 	panfrost_pm_domain_fini(pfdev);
 	panfrost_reset_fini(pfdev);
+	panfrost_devfreq_fini(pfdev);
 	panfrost_regulator_fini(pfdev);
 	panfrost_clk_fini(pfdev);
 }
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 882fecc33fdb..4dda68689015 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -14,7 +14,6 @@
 #include <drm/drm_utils.h>
 
 #include "panfrost_device.h"
-#include "panfrost_devfreq.h"
 #include "panfrost_gem.h"
 #include "panfrost_mmu.h"
 #include "panfrost_job.h"
@@ -606,13 +605,6 @@ static int panfrost_probe(struct platform_device *pdev)
 		goto err_out0;
 	}
 
-	err = panfrost_devfreq_init(pfdev);
-	if (err) {
-		if (err != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "Fatal error during devfreq init\n");
-		goto err_out1;
-	}
-
 	pm_runtime_set_active(pfdev->dev);
 	pm_runtime_mark_last_busy(pfdev->dev);
 	pm_runtime_enable(pfdev->dev);
@@ -625,16 +617,14 @@ static int panfrost_probe(struct platform_device *pdev)
 	 */
 	err = drm_dev_register(ddev, 0);
 	if (err < 0)
-		goto err_out2;
+		goto err_out1;
 
 	panfrost_gem_shrinker_init(ddev);
 
 	return 0;
 
-err_out2:
-	pm_runtime_disable(pfdev->dev);
-	panfrost_devfreq_fini(pfdev);
 err_out1:
+	pm_runtime_disable(pfdev->dev);
 	panfrost_device_fini(pfdev);
 err_out0:
 	drm_dev_put(ddev);
@@ -650,7 +640,6 @@ static int panfrost_remove(struct platform_device *pdev)
 	panfrost_gem_shrinker_cleanup(ddev);
 
 	pm_runtime_get_sync(pfdev->dev);
-	panfrost_devfreq_fini(pfdev);
 	panfrost_device_fini(pfdev);
 	pm_runtime_put_sync_suspend(pfdev->dev);
 	pm_runtime_disable(pfdev->dev);
-- 
2.20.1