linux-kernel - Re: [PATCH v2 10/18] media: venus: hfi_venus: Fix version checks in venus

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Date:   Fri, 5 May 2023 21:13:51 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Vikash Garodia <quic_vgarodia@...cinc.com>,
        Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Dikshita Agarwal <dikshita@....qualcomm.com>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Mansur Alisha Shaik <mansur@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Dikshita Agarwal <quic_dikshita@...cinc.com>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Marijn Suijten <marijn.suijten@...ainline.org>
Subject: Re: [PATCH v2 10/18] media: venus: hfi_venus: Fix version checks in
 venus_isr()



On 5.05.2023 15:29, Vikash Garodia wrote:
> 
> On 5/4/2023 1:31 PM, Konrad Dybcio wrote:
>> IS_V6 was used there IS_IRIS2(_1) should have been and the !IS_V6
>> condition was only correct by luck and for now. Replace them both
>> with VPU version checks.
> 
> Existing video driver supports IRIS2(_1) under V6 category. What is meant by
> 
> !IS_V6 condition was correct by luck ?
Right, I didn't quite think of it this way. I probably meant "it works
just because there are no other HFIv6 cores supported", but that might
have just as well been a design choice. I'll reword and drop fixes.

Konrad
> 
> -Vikash
> 
>> Fixes: 24fcc0522d87 ("media: venus: hfi: Add 6xx interrupt support")
>> Reviewed-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>> ---
>>   drivers/media/platform/qcom/venus/hfi_venus.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c
>> index ca56b1a8eb71..6d5906fab800 100644
>> --- a/drivers/media/platform/qcom/venus/hfi_venus.c
>> +++ b/drivers/media/platform/qcom/venus/hfi_venus.c
>> @@ -1130,7 +1130,7 @@ static irqreturn_t venus_isr(struct venus_core *core)
>>       wrapper_base = hdev->core->wrapper_base;
>>         status = readl(wrapper_base + WRAPPER_INTR_STATUS);
>> -    if (IS_V6(core)) {
>> +    if (IS_IRIS2(core) || IS_IRIS2_1(core)) {
>>           if (status & WRAPPER_INTR_STATUS_A2H_MASK ||
>>               status & WRAPPER_INTR_STATUS_A2HWD_MASK_V6 ||
>>               status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK)
>> @@ -1142,7 +1142,7 @@ static irqreturn_t venus_isr(struct venus_core *core)
>>               hdev->irq_status = status;
>>       }
>>       writel(1, cpu_cs_base + CPU_CS_A2HSOFTINTCLR);
>> -    if (!IS_V6(core))
>> +    if (!(IS_AR50_LITE(core) || IS_IRIS2(core) || IS_IRIS2_1(core)))
>>           writel(status, wrapper_base + WRAPPER_INTR_CLEAR);
>>         return IRQ_WAKE_THREAD;
>>