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drm/panfrost: add support for vendor quirk 

The T820, G31 & G52 GPUs integrated 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 <narmstrong@baylibre.com>
[Steven: Fix typo in commit log]
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200916150147.25753-2-narmstrong@baylibre.com
This commit is contained in:
Neil Armstrong 2020-09-16 17:01:45 +02:00 committed by Steven Price
parent a7d39439f8
commit 91e89097b8
2 changed files with 7 additions and 0 deletions
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3
drivers/gpu/drm/panfrost/panfrost_device.h
View File

@ -70,6 +70,9 @@ struct panfrost_compatible {
int num_pm_domains; int num_pm_domains;
/* Only required if num_pm_domains > 1. */ /* Only required if num_pm_domains > 1. */
const char * const *pm_domain_names; const char * const *pm_domain_names;
/* Vendor implementation quirks callback */
void (*vendor_quirk)(struct panfrost_device *pfdev);
}; };
struct panfrost_device { struct panfrost_device {

4
drivers/gpu/drm/panfrost/panfrost_gpu.c
View File

@ -136,6 +136,10 @@ static void panfrost_gpu_init_quirks(struct panfrost_device *pfdev)
if (quirks) if (quirks)
gpu_write(pfdev, GPU_JM_CONFIG, 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 #define MAX_HW_REVS 6