linux-kernel - Re: [PATCH v2 07/29] venus: hfi_venus: add halt AXI support for Venus 4xx

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Message-ID: <642a4a69-70fb-c72d-5700-1c55755d3073@linaro.org>
Date:   Mon, 21 May 2018 15:17:09 +0300
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     Tomasz Figa <tfiga@...gle.com>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        vgarodia@...eaurora.org
Subject: Re: [PATCH v2 07/29] venus: hfi_venus: add halt AXI support for Venus
 4xx

Hi Tomasz,

On 05/18/2018 05:23 PM, Tomasz Figa wrote:
> On Tue, May 15, 2018 at 5:12 PM Stanimir Varbanov <
> stanimir.varbanov@...aro.org> wrote:
> 
>> Add AXI halt support for version 4xx by using venus wrapper
>> registers.
> 
>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
>> ---
>>   drivers/media/platform/qcom/venus/hfi_venus.c | 17 +++++++++++++++++
>>   1 file changed, 17 insertions(+)
> 
>> diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c
> b/drivers/media/platform/qcom/venus/hfi_venus.c
>> index 734ce11b0ed0..53546174aab8 100644
>> --- a/drivers/media/platform/qcom/venus/hfi_venus.c
>> +++ b/drivers/media/platform/qcom/venus/hfi_venus.c
>> @@ -532,6 +532,23 @@ static int venus_halt_axi(struct venus_hfi_device
> *hdev)
>>          u32 val;
>>          int ret;
> 
>> +       if (hdev->core->res->hfi_version == HFI_VERSION_4XX) {
>> +               val = venus_readl(hdev, WRAPPER_CPU_AXI_HALT);
>> +               val |= BIT(16);
> 
> Can we have the bit defined?
> 
>> +               venus_writel(hdev, WRAPPER_CPU_AXI_HALT, val);
>> +
>> +               ret = readl_poll_timeout(base +
> WRAPPER_CPU_AXI_HALT_STATUS,
>> +                                        val, val & BIT(24),
> 
> Ditto.

Sure will add defines.

-- 
regards,
Stan