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Date: Tue, 14 Dec 2021 00:55:44 +0200
From: Stanimir Varbanov <stanimir.varbanov@...aro.org>
To: John Stultz <john.stultz@...aro.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Tadeusz Struk <tadeusz.struk@...aro.org>,
Andy Gross <agross@...nel.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Lee Jones <lee.jones@...aro.org>,
Amit Pundir <amit.pundir@...aro.org>,
linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] media: venus: Synchronize probe() between venus_core
and enc/dec
On 12/14/21 12:50 AM, Stanimir Varbanov wrote:
> From 9bfb69026374fa010d36680554e2634d5d435681 Mon Sep 17 00:00:00 2001
> From: Stanimir Varbanov <stanimir.varbanov@...aro.org>
> Date: Tue, 14 Dec 2021 00:45:18 +0200
> Subject: [PATCH] venus: WIP: Rework and reorder firmware load
>
> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
> ---
> drivers/media/platform/qcom/venus/core.c | 8 +++----
> drivers/media/platform/qcom/venus/core.h | 2 ++
> drivers/media/platform/qcom/venus/firmware.c | 22 +++++++++++++++++++-
> drivers/media/platform/qcom/venus/vdec.c | 3 ++-
> drivers/media/platform/qcom/venus/venc.c | 3 ++-
> 5 files changed, 31 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/venus/core.c
> b/drivers/media/platform/qcom/venus/core.c
> index 877eca125803..7f65b08b2bac 100644
> --- a/drivers/media/platform/qcom/venus/core.c
> +++ b/drivers/media/platform/qcom/venus/core.c
> @@ -344,10 +344,6 @@ static int venus_probe(struct platform_device *pdev)
> if (ret < 0)
> goto err_runtime_disable;
>
> - ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
> - if (ret)
> - goto err_runtime_disable;
> -
> ret = venus_firmware_init(core);
> if (ret)
> goto err_of_depopulate;
> @@ -372,6 +368,10 @@ static int venus_probe(struct platform_device *pdev)
> if (ret)
> goto err_venus_shutdown;
>
> + ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
> + if (ret)
> + goto err_venus_shutdown;
> +
> ret = pm_runtime_put_sync(dev);
> if (ret) {
> pm_runtime_get_noresume(dev);
> diff --git a/drivers/media/platform/qcom/venus/core.h
> b/drivers/media/platform/qcom/venus/core.h
> index 7c3bac01cd49..6455efb35168 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -182,6 +182,8 @@ struct venus_core {
> atomic_t insts_count;
> unsigned int state;
> struct completion done;
> + struct completion fwload_done;
> + bool fwload_success;
> unsigned int error;
> unsigned long sys_error;
> wait_queue_head_t sys_err_done;
> diff --git a/drivers/media/platform/qcom/venus/firmware.c
> b/drivers/media/platform/qcom/venus/firmware.c
> index 14b6f1d05991..d523fbeb9d56 100644
> --- a/drivers/media/platform/qcom/venus/firmware.c
> +++ b/drivers/media/platform/qcom/venus/firmware.c
> @@ -76,6 +76,14 @@ int venus_set_hw_state(struct venus_core *core, bool
> resume)
> return 0;
> }
>
> +static void firmware_async_load(const struct firmware *fw, void *context)
> +{
> + struct venus_core *core = context;
> +
> + core->fwload_success = true;
this should be
if (fw)
core->fwload_success = true;
> + complete(&core->fwload_done);
> +}
> +
> static int venus_load_fw(struct venus_core *core, const char *fwname,
> phys_addr_t *mem_phys, size_t *mem_size)
> {
> @@ -101,10 +109,22 @@ static int venus_load_fw(struct venus_core *core,
> const char *fwname,
> if (ret)
> goto err_put_node;
>
> - ret = request_firmware(&mdt, fwname, dev);
> + init_completion(&core->fwload_done);
> + core->fwload_success = false;
> +
> + ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOUEVENT, fwname,
> + dev, GFP_KERNEL, core,
> + firmware_async_load);
> if (ret < 0)
> goto err_put_node;
>
> + wait_for_completion(&core->fwload_done);
> +
> + if (!core->fwload_success) {
> + ret = -ENOENT;
> + goto err_put_node;
> + }
> +
> fw_size = qcom_mdt_get_size(mdt);
> if (fw_size < 0) {
> ret = fw_size;
> diff --git a/drivers/media/platform/qcom/venus/vdec.c
> b/drivers/media/platform/qcom/venus/vdec.c
> index 91da3f509724..0e718d24a3b3 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -1718,6 +1718,8 @@ static int vdec_probe(struct platform_device *pdev)
> if (!vdev)
> return -ENOMEM;
>
> + core->dev_dec = dev;
> +
> strscpy(vdev->name, "qcom-venus-decoder", sizeof(vdev->name));
> vdev->release = video_device_release;
> vdev->fops = &vdec_fops;
> @@ -1731,7 +1733,6 @@ static int vdec_probe(struct platform_device *pdev)
> goto err_vdev_release;
>
> core->vdev_dec = vdev;
> - core->dev_dec = dev;
>
> video_set_drvdata(vdev, core);
> pm_runtime_set_autosuspend_delay(dev, 2000);
> diff --git a/drivers/media/platform/qcom/venus/venc.c
> b/drivers/media/platform/qcom/venus/venc.c
> index 84bafc3118cc..1b3fb927eb16 100644
> --- a/drivers/media/platform/qcom/venus/venc.c
> +++ b/drivers/media/platform/qcom/venus/venc.c
> @@ -1448,6 +1448,8 @@ static int venc_probe(struct platform_device *pdev)
> if (!vdev)
> return -ENOMEM;
>
> + core->dev_enc = dev;
> +
> strscpy(vdev->name, "qcom-venus-encoder", sizeof(vdev->name));
> vdev->release = video_device_release;
> vdev->fops = &venc_fops;
> @@ -1461,7 +1463,6 @@ static int venc_probe(struct platform_device *pdev)
> goto err_vdev_release;
>
> core->vdev_enc = vdev;
> - core->dev_enc = dev;
>
> video_set_drvdata(vdev, core);
> pm_runtime_set_autosuspend_delay(dev, 2000);
> -- 2.25.1
--
regards,
Stan
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