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[v2,1/3] drm/panfrost: add support for vendor quirk

Message ID 20200916150147.25753-2-narmstrong@baylibre.com
State New, archived
Headers show
Series drm/panfrost: add Amlogic integration quirks | expand

Commit Message

Neil Armstrong Sept. 16, 2020, 3:01 p.m. UTC
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 <narmstrong@baylibre.com>
---
 drivers/gpu/drm/panfrost/panfrost_device.h | 3 +++
 drivers/gpu/drm/panfrost/panfrost_gpu.c    | 4 ++++
 2 files changed, 7 insertions(+)

Comments

Steven Price Sept. 17, 2020, 10:29 a.m. UTC | #1
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 <narmstrong@baylibre.com>

Reviewed-by: Steven Price <steven.price@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
>
diff mbox series

Patch

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