linux-kernel - Re: [PATCH 06/18] media: venus: hfi_venus: Write to VIDC_CTRL

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Date:   Tue, 28 Feb 2023 15:33:26 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Dikshita Agarwal <dikshita@....qualcomm.com>,
        Dikshita Agarwal <dikshita@...eaurora.org>,
        Mansur Alisha Shaik <mansur@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>
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,
        Vikash Garodia <vgarodia@...eaurora.org>
Subject: Re: [PATCH 06/18] media: venus: hfi_venus: Write to VIDC_CTRL_INIT
 after unmasking interrupts

On 28/02/2023 15:24, Konrad Dybcio wrote:
> The downstream driver signals the hardware to be enabled only after the
> interrupts are unmasked, which... makes sense. Follow suit.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   drivers/media/platform/qcom/venus/hfi_venus.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c
> index 772e5e9cf127..4d785e53aa0b 100644
> --- a/drivers/media/platform/qcom/venus/hfi_venus.c
> +++ b/drivers/media/platform/qcom/venus/hfi_venus.c
> @@ -454,7 +454,6 @@ static int venus_boot_core(struct venus_hfi_device *hdev)
>   	void __iomem *wrapper_base = hdev->core->wrapper_base;
>   	int ret = 0;
>   
> -	writel(BIT(VIDC_CTRL_INIT_CTRL_SHIFT), cpu_cs_base + VIDC_CTRL_INIT);
>   	if (IS_IRIS1(hdev->core) || IS_IRIS2(hdev->core) || IS_IRIS2_1(hdev->core)) {
>   		mask_val = readl(wrapper_base + WRAPPER_INTR_MASK);
>   		mask_val &= ~(WRAPPER_INTR_MASK_A2HWD_BASK_V6 |
> @@ -466,6 +465,7 @@ static int venus_boot_core(struct venus_hfi_device *hdev)
>   	writel(mask_val, wrapper_base + WRAPPER_INTR_MASK);
>   	writel(1, cpu_cs_base + CPU_CS_SCIACMDARG3);
>   
> +	writel(BIT(VIDC_CTRL_INIT_CTRL_SHIFT), cpu_cs_base + VIDC_CTRL_INIT);
>   	while (!ctrl_status && count < max_tries) {
>   		ctrl_status = readl(cpu_cs_base + CPU_CS_SCIACMDARG0);
>   		if ((ctrl_status & CPU_CS_SCIACMDARG0_ERROR_STATUS_MASK) == 4) {
> 

This should go before you add your new macros in-place of IS_V6() and it 
should have a fixes.

---
bod