linux-kernel - Re: [PATCH] venus: helper: do not set constrained format for UBWC

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Date:   Mon, 14 Jun 2021 11:55:25 +0530
From:   mansur@...eaurora.org
To:     Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc:     Bryan O'Donoghue <pure.logic@...us-software.ie>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, vgarodia@...eaurora.org,
        dikshita@...eaurora.org
Subject: Re: [PATCH] venus: helper: do not set constrained format for UBWC

On 2021-06-02 15:23, Stanimir Varbanov wrote:
> Mansur, could you answer to Bryan's comments?
> 
>> On 5/28/21 8:23 PM, Bryan O'Donoghue wrote:
>>> On 28/05/2021 10:48, Mansur Alisha Shaik wrote:
>>>> Do not set constrained format explicitly for UBWC
>>>> 
>>>> Signed-off-by: Mansur Alisha Shaik <mansur@...eaurora.org>
>>> 
>>> Could you give a little bit more detail on why, what the side effects 
>>> are ?
>>> 
	Sorry for late response, by default for NV12_UBWC is 128x32

>>> Should this be a Fixes: ?
>>> 
	without this fix on V6, firmware throws below SFR
	qcom-venus aa00000.video-codec: SFR message from FW: 
QC_IMAGE_VERSION_STRING=video-firmware.1.0-df9cb37cf8e507a4468265658702247652351a49
	Err_Fatal - 
/local/mnt/workspace/pkg/builds/dynamic_timely/tree2/vendor/qcom/proprietary/video-firmware-noship/venus_proc/venus/decoders/common/src/video_decoder.c:6644:2fef3
	which result in playback happens through Software codec.
>>>> ---
>>>>   drivers/media/platform/qcom/venus/helpers.c | 4 ++++
>>>>   1 file changed, 4 insertions(+)
>>>> 
>>>> diff --git a/drivers/media/platform/qcom/venus/helpers.c
>>>> b/drivers/media/platform/qcom/venus/helpers.c
>>>> index b813d6dba..e4b8a2a 100644
>>>> --- a/drivers/media/platform/qcom/venus/helpers.c
>>>> +++ b/drivers/media/platform/qcom/venus/helpers.c
>>>> @@ -1138,8 +1138,12 @@ int 
>>>> venus_helper_set_format_constraints(struct
>>>> venus_inst *inst)
>>>>       if (!IS_V6(inst->core))
>>>>           return 0;
>>>>   +    if (inst->opb_fmt == HFI_COLOR_FORMAT_NV12_UBWC)
>>>> +        return 0;
>>>> +
>>>>       pconstraint.buffer_type = HFI_BUFFER_OUTPUT2;
>>>>       pconstraint.num_planes = 2;
>>>> +
>>> 
>>> Additional newline should be removed.
>>> 
>>>>       pconstraint.plane_format[0].stride_multiples = 128;
>>>>       pconstraint.plane_format[0].max_stride = 8192;
>>>>       pconstraint.plane_format[0].min_plane_buffer_height_multiple = 
>>>> 32;
>>>> 
>>> 
>>> ---
>>> bod