On 16/09/2020 16:01, Neil Armstrong wrote:
The T820, G31 & G52 GPUs integratewd by Amlogic in the respective GXM, G12A/SM1
& G12B
NIT: s/integratewd/integrated/
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 <narmstr...@baylibre.com>
Reviewed-by: Steven Price <steven.pr...@arm.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 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
