From 91e89097b86f566636ea5a7329c79d5521be46d2 Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Wed, 16 Sep 2020 17:01:45 +0200 Subject: [PATCH] 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 [Steven: Fix typo in commit log] Reviewed-by: Steven Price Reviewed-by: Alyssa Rosenzweig Signed-off-by: Steven Price Link: https://patchwork.freedesktop.org/patch/msgid/20200916150147.25753-2-narmstrong@baylibre.com --- 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 953f7536a773..2e9cbd1c4a58 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 -- 2.17.1