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From: "Adrián Larumbe" <adrian.larumbe@collabora.com>
To: Boris Brezillon <boris.brezillon@collabora.com>,
	 Rob Herring <robh@kernel.org>,
	Steven Price <steven.price@arm.com>,
	 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	 Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	 David Airlie <airlied@gmail.com>,
	Simona Vetter <simona@ffwll.ch>,
	 Faith Ekstrand <faith.ekstrand@collabora.com>,
	 "Marty E. Plummer" <hanetzer@startmail.com>,
	 Tomeu Vizoso <tomeu@tomeuvizoso.net>,
	Eric Anholt <eric@anholt.net>,
	 Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
	 Robin Murphy <robin.murphy@arm.com>,
	Philipp Zabel <p.zabel@pengutronix.de>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	"Collabora Kernel Team" <kernel@collabora.com>,
	"Adrián Larumbe" <adrian.larumbe@collabora.com>,
	"Neil Armstrong" <neil.armstrong@linaro.org>
Subject: [PATCH v9 11/16] drm/panfrost: Move perfcnt GPU disable sequence into a helper
Date: Sat, 12 Sep 2026 00:28:12 +0100	[thread overview]
Message-ID: <20260912-claude-fixes-v9-11-e588feaa61ef@collabora.com> (raw)
In-Reply-To: <20260912-claude-fixes-v9-0-e588feaa61ef@collabora.com>

Just for the sake of avoiding repetition.

Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
---
 drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 31 ++++++++++++-----------------
 1 file changed, 13 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_perfcnt.c b/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
index 7020c0192e18..f71534e741b6 100644
--- a/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
+++ b/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
@@ -35,6 +35,16 @@ struct panfrost_perfcnt {
 	struct completion dump_comp;
 };
 
+static void panfrost_perfcnt_hw_disable(struct panfrost_device *pfdev)
+{
+	gpu_write(pfdev, GPU_PERFCNT_CFG,
+		  GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
+	gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0x0);
+	gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0x0);
+	gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0x0);
+	gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
+}
+
 void panfrost_perfcnt_clean_cache_done(struct panfrost_device *pfdev)
 {
 	complete(&pfdev->perfcnt->dump_comp);
@@ -193,12 +203,7 @@ static int panfrost_perfcnt_disable_locked(struct panfrost_device *pfdev,
 	if (user != perfcnt->user)
 		return -EINVAL;
 
-	gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0x0);
-	gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0x0);
-	gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0x0);
-	gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
-	gpu_write(pfdev, GPU_PERFCNT_CFG,
-		  GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
+	panfrost_perfcnt_hw_disable(pfdev);
 
 	perfcnt->user = NULL;
 	drm_gem_vunmap(&perfcnt->mapping->obj->base.base, &map);
@@ -327,12 +332,7 @@ int panfrost_perfcnt_init(struct panfrost_device *pfdev)
 	perfcnt->bosize = size;
 
 	/* Start with everything disabled. */
-	gpu_write(pfdev, GPU_PERFCNT_CFG,
-		  GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
-	gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0);
-	gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0);
-	gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0);
-	gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
+	panfrost_perfcnt_hw_disable(pfdev);
 
 	init_completion(&perfcnt->dump_comp);
 	mutex_init(&perfcnt->lock);
@@ -344,10 +344,5 @@ int panfrost_perfcnt_init(struct panfrost_device *pfdev)
 void panfrost_perfcnt_fini(struct panfrost_device *pfdev)
 {
 	/* Disable everything before leaving. */
-	gpu_write(pfdev, GPU_PERFCNT_CFG,
-		  GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
-	gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0);
-	gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0);
-	gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0);
-	gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
+	panfrost_perfcnt_hw_disable(pfdev);
 }

-- 
2.55.0


  parent reply	other threads:[~2026-09-11 23:29 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-11 23:28 [PATCH v9 00/16] Collection of fixes for Panfrost: Perfcnt, RPM, refactorings Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 01/16] drm/panfrost: Move shrinker initialization and unplug one level down Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 02/16] drm/panfrost: Move lock and modparam initialisations into their subsystems Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 03/16] drm/panfrost: Move debugfs initialisation to relevant subsystems Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 04/16] drm/panfrost: Skip NULL checks for clock enable/disabling Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 05/16] drm/panfrost: Consolidate device clock management and reset Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 06/16] drm/panfrost: Fix PM refcnt and autosuspend issues at device probe/remove Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 07/16] drm/panfrost: Explicitly enable MMU interrupts at device init Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 08/16] drm/panfrost: Move all DRM device initialisation into device_init() Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 09/16] drm/panfrost: Add warning messages to fatal error conditions Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 10/16] drm/panfrost: Add debugfs knob for manually triggering a GPU reset Adrián Larumbe
2026-09-11 23:28 ` Adrián Larumbe [this message]
2026-09-11 23:28 ` [PATCH v9 12/16] drm/panfrost: Skip cache flush/invalidate when enabling perfcnt Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 13/16] drm/panfrost: Avoid cache flush after perfcnt sample in fully coherent systems Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 14/16] drm/panfrost: Introduce a reset lock Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 15/16] drm/panfrost: Fix races between perfcnt and reset sequence Adrián Larumbe
2026-09-11 23:28 ` [PATCH v9 16/16] drm/panfrost: Bump driver minor to reflect new DUMP IOCTL req field Adrián Larumbe

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