linux-kernel - Re: [PATCH 06/11] media: iris: don't specify ubwc

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Message-ID: <d204ad46-46b0-4b65-960e-ff63c98f3505@kernel.org>
Date: Sun, 11 Jan 2026 21:08:54 +0000
From: Bryan O'Donoghue <bod@...nel.org>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>,
 Rob Clark <robin.clark@....qualcomm.com>, Dmitry Baryshkov
 <lumag@...nel.org>, Abhinav Kumar <abhinav.kumar@...ux.dev>,
 Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>,
 Marijn Suijten <marijn.suijten@...ainline.org>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Akhil P Oommen <akhilpo@....qualcomm.com>,
 Vikash Garodia <vikash.garodia@....qualcomm.com>,
 Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
 linux-media@...r.kernel.org
Subject: Re: [PATCH 06/11] media: iris: don't specify ubwc_swizzle in the
 source code

On 10/01/2026 19:37, Dmitry Baryshkov wrote:
> The UBWC swizzle is specified both in the Iris driver and in the
> platform UBWC config. Use the platform UBWC configuration instead of
> specifying it directly in the source.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
>   drivers/media/platform/qcom/iris/iris_hfi_gen2_packet.c | 6 +++---
>   drivers/media/platform/qcom/iris/iris_platform_common.h | 3 ---
>   drivers/media/platform/qcom/iris/iris_platform_gen2.c   | 3 ---
>   3 files changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen2_packet.c b/drivers/media/platform/qcom/iris/iris_hfi_gen2_packet.c
> index a4e60e9d32a4..a880751107c7 100644
> --- a/drivers/media/platform/qcom/iris/iris_hfi_gen2_packet.c
> +++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2_packet.c
> @@ -169,7 +169,7 @@ void iris_hfi_gen2_packet_sys_init(struct iris_core *core, struct iris_hfi_heade
>   				    &payload,
>   				    sizeof(u32));
> 
> -	payload = core->iris_platform_data->ubwc_config->bank_swzl_level;
> +	payload = !!(ubwc->ubwc_swizzle & UBWC_SWIZZLE_ENABLE_LVL1);
>   	iris_hfi_gen2_create_packet(hdr,
>   				    HFI_PROP_UBWC_BANK_SWZL_LEVEL1,
>   				    HFI_HOST_FLAGS_NONE,
> @@ -179,7 +179,7 @@ void iris_hfi_gen2_packet_sys_init(struct iris_core *core, struct iris_hfi_heade
>   				    &payload,
>   				    sizeof(u32));
> 
> -	payload = core->iris_platform_data->ubwc_config->bank_swz2_level;
> +	payload = !!(ubwc->ubwc_swizzle & UBWC_SWIZZLE_ENABLE_LVL2);
>   	iris_hfi_gen2_create_packet(hdr,
>   				    HFI_PROP_UBWC_BANK_SWZL_LEVEL2,
>   				    HFI_HOST_FLAGS_NONE,
> @@ -189,7 +189,7 @@ void iris_hfi_gen2_packet_sys_init(struct iris_core *core, struct iris_hfi_heade
>   				    &payload,
>   				    sizeof(u32));
> 
> -	payload = core->iris_platform_data->ubwc_config->bank_swz3_level;
> +	payload = !!(ubwc->ubwc_swizzle & UBWC_SWIZZLE_ENABLE_LVL3);
>   	iris_hfi_gen2_create_packet(hdr,
>   				    HFI_PROP_UBWC_BANK_SWZL_LEVEL3,
>   				    HFI_HOST_FLAGS_NONE,
> diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h b/drivers/media/platform/qcom/iris/iris_platform_common.h
> index 8421711dbe60..9f9ee67e4732 100644
> --- a/drivers/media/platform/qcom/iris/iris_platform_common.h
> +++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
> @@ -73,9 +73,6 @@ struct tz_cp_config {
> 
>   struct ubwc_config_data {
>   	u32	max_channels;
> -	u32	bank_swzl_level;
> -	u32	bank_swz2_level;
> -	u32	bank_swz3_level;
>   	u32	bank_spreading;
>   };
> 
> diff --git a/drivers/media/platform/qcom/iris/iris_platform_gen2.c b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
> index 5ae996d19ffd..0f06066d814a 100644
> --- a/drivers/media/platform/qcom/iris/iris_platform_gen2.c
> +++ b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
> @@ -633,9 +633,6 @@ static const struct platform_clk_data sm8550_clk_table[] = {
> 
>   static struct ubwc_config_data ubwc_config_sm8550 = {
>   	.max_channels = 8,
> -	.bank_swzl_level = 0,
> -	.bank_swz2_level = 1,
> -	.bank_swz3_level = 1,
>   	.bank_spreading = 1,
>   };
> 
> 
> --
> 2.47.3
> 
> 

Nice.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>