linux-kernel - Re: [PATCH v3 18/23] media: iris: Add a comment to explain usage of MBPS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <68aa8c09-233e-4997-b2f8-7db4cd411351@linaro.org>
Date: Fri, 2 May 2025 17:20:02 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>,
 Vikash Garodia <quic_vgarodia@...cinc.com>,
 Abhinav Kumar <quic_abhinavk@...cinc.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Stefan Schmidt <stefan.schmidt@...aro.org>, Hans Verkuil
 <hverkuil@...all.nl>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
 Neil Armstrong <neil.armstrong@...aro.org>,
 Nicolas Dufresne <nicolas.dufresne@...labora.com>,
 linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 20250417-topic-sm8x50-iris-v10-v7-0-f020cb1d0e98@...aro.org,
 20250424-qcs8300_iris-v5-0-f118f505c300@...cinc.com
Subject: Re: [PATCH v3 18/23] media: iris: Add a comment to explain usage of
 MBPS

On 01/05/2025 20:13, Dikshita Agarwal wrote:
> Add a comment to explain usage of MBPS and define a macro for 8K
> resolution for better readability
> 
> Acked-by: Vikash Garodia <quic_vgarodia@...cinc.com>
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
>   drivers/media/platform/qcom/iris/iris_platform_common.h | 2 ++
>   drivers/media/platform/qcom/iris/iris_platform_gen2.c   | 4 ++--
>   drivers/media/platform/qcom/iris/iris_platform_sm8250.c | 2 +-
>   3 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h b/drivers/media/platform/qcom/iris/iris_platform_common.h
> index 1dab276431c7..3e0ae87526a0 100644
> --- a/drivers/media/platform/qcom/iris/iris_platform_common.h
> +++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
> @@ -21,6 +21,7 @@ struct iris_inst;
>   #define DEFAULT_MAX_HOST_BUF_COUNT		64
>   #define DEFAULT_MAX_HOST_BURST_BUF_COUNT	256
>   #define DEFAULT_FPS				30
> +#define NUM_MBS_8K				((8192 * 4352) / 256)
>   
>   enum stage_type {
>   	STAGE_1 = 1,
> @@ -172,6 +173,7 @@ struct iris_platform_data {
>   	struct ubwc_config_data *ubwc_config;
>   	u32 num_vpp_pipe;
>   	u32 max_session_count;
> +	/* max number of macroblocks per frame supported */
>   	u32 max_core_mbpf;
>   	const u32 *input_config_params;
>   	unsigned int input_config_params_size;
> diff --git a/drivers/media/platform/qcom/iris/iris_platform_gen2.c b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
> index 1e69ba15db0f..deb7037e8e86 100644
> --- a/drivers/media/platform/qcom/iris/iris_platform_gen2.c
> +++ b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
> @@ -248,7 +248,7 @@ struct iris_platform_data sm8550_data = {
>   	.ubwc_config = &ubwc_config_sm8550,
>   	.num_vpp_pipe = 4,
>   	.max_session_count = 16,
> -	.max_core_mbpf = ((8192 * 4352) / 256) * 2,
> +	.max_core_mbpf = NUM_MBS_8K * 2,
>   	.input_config_params =
>   		sm8550_vdec_input_config_params,
>   	.input_config_params_size =
> @@ -308,7 +308,7 @@ struct iris_platform_data sm8650_data = {
>   	.ubwc_config = &ubwc_config_sm8550,
>   	.num_vpp_pipe = 4,
>   	.max_session_count = 16,
> -	.max_core_mbpf = ((8192 * 4352) / 256) * 2,
> +	.max_core_mbpf = NUM_MBS_8K * 2,
>   	.input_config_params =
>   		sm8550_vdec_input_config_params,
>   	.input_config_params_size =
> diff --git a/drivers/media/platform/qcom/iris/iris_platform_sm8250.c b/drivers/media/platform/qcom/iris/iris_platform_sm8250.c
> index 543fa2661539..8183e4e95fa4 100644
> --- a/drivers/media/platform/qcom/iris/iris_platform_sm8250.c
> +++ b/drivers/media/platform/qcom/iris/iris_platform_sm8250.c
> @@ -127,7 +127,7 @@ struct iris_platform_data sm8250_data = {
>   	.hw_response_timeout = HW_RESPONSE_TIMEOUT_VALUE,
>   	.num_vpp_pipe = 4,
>   	.max_session_count = 16,
> -	.max_core_mbpf = (8192 * 4352) / 256,
> +	.max_core_mbpf = NUM_MBS_8K,
>   	.input_config_params =
>   		sm8250_vdec_input_config_param_default,
>   	.input_config_params_size =
> 

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