[PATCH v2 1/3] drm/panfrost: add support for vendor quirk
From: Neil Armstrong <hidden>
Date: 2020-09-16 21:02:00
Also in:
dri-devel, linux-amlogic, lkml
Subsystem:
arm mali panfrost drm driver, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Boris Brezillon, Rob Herring, Steven Price, Adrián Larumbe, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
The T820, G31 & G52 GPUs integratewd by Amlogic in the respective GXM, G12A/SM1 & G12B SoCs needs a quirk in the PWR registers after each reset. This adds a callback in the device compatible struct of permit this. Signed-off-by: Neil Armstrong <redacted> --- drivers/gpu/drm/panfrost/panfrost_device.h | 3 +++ drivers/gpu/drm/panfrost/panfrost_gpu.c | 4 ++++ 2 files changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index abfc78db193a..140e004a3790 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h@@ -70,6 +70,9 @@ struct panfrost_compatible { int num_pm_domains; /* Only required if num_pm_domains > 1. */ const char * const *pm_domain_names; + + /* Vendor implementation quirks callback */ + void (*vendor_quirk)(struct panfrost_device *pfdev); }; struct panfrost_device {
diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c
index c7c5da5a31d4..a6de78bc1fa8 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c@@ -136,6 +136,10 @@ static void panfrost_gpu_init_quirks(struct panfrost_device *pfdev) if (quirks) gpu_write(pfdev, GPU_JM_CONFIG, quirks); + + /* Here goes platform specific quirks */ + if (pfdev->comp->vendor_quirk) + pfdev->comp->vendor_quirk(pfdev); } #define MAX_HW_REVS 6
--
2.22.0
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