diff mbox series

[v2] media: mtk-vcodec: fix builds when remoteproc is disabled

Message ID 20201004122234.802044-1-acourbot@chromium.org (mailing list archive)
State New
Headers show
Series [v2] media: mtk-vcodec: fix builds when remoteproc is disabled | expand

Commit Message

Alexandre Courbot Oct. 4, 2020, 12:22 p.m. UTC
The addition of MT8183 support added a dependency on the SCP remoteproc
module. However the initial patch used the "select" Kconfig directive,
which may result in the SCP module to not be compiled if remoteproc was
disabled. In such a case, mtk-vcodec would try to link against
non-existent SCP symbols. "select" was clearly misused here as explained
in kconfig-language.txt.

Replace this by a "depends" directive on at least one of the VPU and
SCP modules, to allow the driver to be compiled as long as one of these
is enabled, and adapt the code to support this new scenario.

Also adapt the Kconfig text to explain the extra requirements for MT8173
and MT8183.

Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
---
 drivers/media/platform/Kconfig                | 10 +--
 .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 72 ++++++++++++-------
 2 files changed, 54 insertions(+), 28 deletions(-)

Comments

Alexandre Courbot Oct. 5, 2020, 3:32 a.m. UTC | #1
On Sun, Oct 4, 2020 at 9:22 PM Alexandre Courbot <acourbot@chromium.org> wrote:
>
> The addition of MT8183 support added a dependency on the SCP remoteproc
> module. However the initial patch used the "select" Kconfig directive,
> which may result in the SCP module to not be compiled if remoteproc was
> disabled. In such a case, mtk-vcodec would try to link against
> non-existent SCP symbols. "select" was clearly misused here as explained
> in kconfig-language.txt.
>
> Replace this by a "depends" directive on at least one of the VPU and
> SCP modules, to allow the driver to be compiled as long as one of these
> is enabled, and adapt the code to support this new scenario.
>
> Also adapt the Kconfig text to explain the extra requirements for MT8173
> and MT8183.
>
> Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested

Forgot to send the changelog, so here it is:

Changes since v1:
* Added Acked-by from Randy.
* Fixed typo in Kconfig description.

> ---
>  drivers/media/platform/Kconfig                | 10 +--
>  .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 72 ++++++++++++-------
>  2 files changed, 54 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index a3cb104956d5..98eb62e49ec2 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -253,14 +253,16 @@ config VIDEO_MEDIATEK_VCODEC
>         depends on MTK_IOMMU || COMPILE_TEST
>         depends on VIDEO_DEV && VIDEO_V4L2
>         depends on ARCH_MEDIATEK || COMPILE_TEST
> +       depends on VIDEO_MEDIATEK_VPU || MTK_SCP
>         select VIDEOBUF2_DMA_CONTIG
>         select V4L2_MEM2MEM_DEV
> -       select VIDEO_MEDIATEK_VPU
> -       select MTK_SCP
>         help
>             Mediatek video codec driver provides HW capability to
> -           encode and decode in a range of video formats
> -           This driver rely on VPU driver to communicate with VPU.
> +           encode and decode in a range of video formats on MT8173
> +           and MT8183.
> +
> +           Note that support for MT8173 requires VIDEO_MEDIATEK_VPU to
> +           also be selected. Support for MT8183 depends on MTK_SCP.
>
>             To compile this driver as modules, choose M here: the
>             modules will be called mtk-vcodec-dec and mtk-vcodec-enc.
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
> index 6c2a2568d844..23a80027a8fb 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
> @@ -13,6 +13,7 @@ struct mtk_vcodec_fw_ops {
>                             mtk_vcodec_ipi_handler handler, const char *name, void *priv);
>         int (*ipi_send)(struct mtk_vcodec_fw *fw, int id, void *buf,
>                         unsigned int len, unsigned int wait);
> +       void (*release)(struct mtk_vcodec_fw *fw);
>  };
>
>  struct mtk_vcodec_fw {
> @@ -22,6 +23,8 @@ struct mtk_vcodec_fw {
>         struct mtk_scp *scp;
>  };
>
> +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
> +
>  static int mtk_vcodec_vpu_load_firmware(struct mtk_vcodec_fw *fw)
>  {
>         return vpu_load_firmware(fw->pdev);
> @@ -64,6 +67,27 @@ static int mtk_vcodec_vpu_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
>         return vpu_ipi_send(fw->pdev, id, buf, len);
>  }
>
> +static void mtk_vcodec_vpu_release(struct mtk_vcodec_fw *fw)
> +{
> +       put_device(&fw->pdev->dev);
> +}
> +
> +static void mtk_vcodec_vpu_reset_handler(void *priv)
> +{
> +       struct mtk_vcodec_dev *dev = priv;
> +       struct mtk_vcodec_ctx *ctx;
> +
> +       mtk_v4l2_err("Watchdog timeout!!");
> +
> +       mutex_lock(&dev->dev_mutex);
> +       list_for_each_entry(ctx, &dev->ctx_list, list) {
> +               ctx->state = MTK_STATE_ABORT;
> +               mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
> +                              ctx->id);
> +       }
> +       mutex_unlock(&dev->dev_mutex);
> +}
> +
>  static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
>         .load_firmware = mtk_vcodec_vpu_load_firmware,
>         .get_vdec_capa = mtk_vcodec_vpu_get_vdec_capa,
> @@ -71,8 +95,13 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
>         .map_dm_addr = mtk_vcodec_vpu_map_dm_addr,
>         .ipi_register = mtk_vcodec_vpu_set_ipi_register,
>         .ipi_send = mtk_vcodec_vpu_ipi_send,
> +       .release = mtk_vcodec_vpu_release,
>  };
>
> +#endif  /* IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU) */
> +
> +#if IS_ENABLED(CONFIG_MTK_SCP)
> +
>  static int mtk_vcodec_scp_load_firmware(struct mtk_vcodec_fw *fw)
>  {
>         return rproc_boot(scp_get_rproc(fw->scp));
> @@ -107,6 +136,11 @@ static int mtk_vcodec_scp_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
>         return scp_ipi_send(fw->scp, id, buf, len, wait);
>  }
>
> +static void mtk_vcodec_scp_release(struct mtk_vcodec_fw *fw)
> +{
> +       scp_put(fw->scp);
> +}
> +
>  static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
>         .load_firmware = mtk_vcodec_scp_load_firmware,
>         .get_vdec_capa = mtk_vcodec_scp_get_vdec_capa,
> @@ -114,23 +148,10 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
>         .map_dm_addr = mtk_vcodec_vpu_scp_dm_addr,
>         .ipi_register = mtk_vcodec_scp_set_ipi_register,
>         .ipi_send = mtk_vcodec_scp_ipi_send,
> +       .release = mtk_vcodec_scp_release,
>  };
>
> -static void mtk_vcodec_reset_handler(void *priv)
> -{
> -       struct mtk_vcodec_dev *dev = priv;
> -       struct mtk_vcodec_ctx *ctx;
> -
> -       mtk_v4l2_err("Watchdog timeout!!");
> -
> -       mutex_lock(&dev->dev_mutex);
> -       list_for_each_entry(ctx, &dev->ctx_list, list) {
> -               ctx->state = MTK_STATE_ABORT;
> -               mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
> -                              ctx->id);
> -       }
> -       mutex_unlock(&dev->dev_mutex);
> -}
> +#endif  /* IS_ENABLED(CONFIG_MTK_SCP) */
>
>  struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>                                            enum mtk_vcodec_fw_type type,
> @@ -143,16 +164,22 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>
>         switch (type) {
>         case VPU:
> +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
>                 ops = &mtk_vcodec_vpu_msg;
>                 fw_pdev = vpu_get_plat_device(dev->plat_dev);
>                 if (!fw_pdev) {
>                         mtk_v4l2_err("firmware device is not ready");
>                         return ERR_PTR(-EINVAL);
>                 }
> -               vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_reset_handler,
> +               vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_vpu_reset_handler,
>                                     dev, rst_id);
>                 break;
> +#else
> +               mtk_v4l2_err("no VPU support in this kernel");
> +               return ERR_PTR(-ENODEV);
> +#endif
>         case SCP:
> +#if IS_ENABLED(CONFIG_MTK_SCP)
>                 ops = &mtk_vcodec_rproc_msg;
>                 scp = scp_get(dev->plat_dev);
>                 if (!scp) {
> @@ -160,6 +187,10 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>                         return ERR_PTR(-EPROBE_DEFER);
>                 }
>                 break;
> +#else
> +               mtk_v4l2_err("no SCP support in this kernel");
> +               return ERR_PTR(-ENODEV);
> +#endif
>         default:
>                 mtk_v4l2_err("invalid vcodec fw type");
>                 return ERR_PTR(-EINVAL);
> @@ -180,14 +211,7 @@ EXPORT_SYMBOL_GPL(mtk_vcodec_fw_select);
>
>  void mtk_vcodec_fw_release(struct mtk_vcodec_fw *fw)
>  {
> -       switch (fw->type) {
> -       case VPU:
> -               put_device(&fw->pdev->dev);
> -               break;
> -       case SCP:
> -               scp_put(fw->scp);
> -               break;
> -       }
> +       fw->ops->release(fw);
>  }
>  EXPORT_SYMBOL_GPL(mtk_vcodec_fw_release);
>
> --
> 2.28.0.806.g8561365e88-goog
>
Sakari Ailus Oct. 5, 2020, 8:48 a.m. UTC | #2
Hi Alexandre,

On Sun, Oct 04, 2020 at 09:22:34PM +0900, Alexandre Courbot wrote:
> The addition of MT8183 support added a dependency on the SCP remoteproc
> module. However the initial patch used the "select" Kconfig directive,
> which may result in the SCP module to not be compiled if remoteproc was
> disabled. In such a case, mtk-vcodec would try to link against
> non-existent SCP symbols. "select" was clearly misused here as explained
> in kconfig-language.txt.
> 
> Replace this by a "depends" directive on at least one of the VPU and
> SCP modules, to allow the driver to be compiled as long as one of these
> is enabled, and adapt the code to support this new scenario.
> 
> Also adapt the Kconfig text to explain the extra requirements for MT8173
> and MT8183.
> 
> Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested

Thanks for the patch!

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>

I wonder if this driver suffers from similar object lifetime management
issues than V4L2 and MC do, albeit not related to either. Say, what happens
if you unbind the other device while mtk-vcodec is in use?
Alexandre Courbot Oct. 5, 2020, 11:29 a.m. UTC | #3
On Mon, Oct 5, 2020 at 5:49 PM Sakari Ailus
<sakari.ailus@linux.intel.com> wrote:
>
> Hi Alexandre,
>
> On Sun, Oct 04, 2020 at 09:22:34PM +0900, Alexandre Courbot wrote:
> > The addition of MT8183 support added a dependency on the SCP remoteproc
> > module. However the initial patch used the "select" Kconfig directive,
> > which may result in the SCP module to not be compiled if remoteproc was
> > disabled. In such a case, mtk-vcodec would try to link against
> > non-existent SCP symbols. "select" was clearly misused here as explained
> > in kconfig-language.txt.
> >
> > Replace this by a "depends" directive on at least one of the VPU and
> > SCP modules, to allow the driver to be compiled as long as one of these
> > is enabled, and adapt the code to support this new scenario.
> >
> > Also adapt the Kconfig text to explain the extra requirements for MT8173
> > and MT8183.
> >
> > Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> > Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
> > Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
>
> Thanks for the patch!
>
> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>

Thanks!

>
> I wonder if this driver suffers from similar object lifetime management
> issues than V4L2 and MC do, albeit not related to either. Say, what happens
> if you unbind the other device while mtk-vcodec is in use?

That's a question that maybe the driver maintainers can answer, but
from my experience during development I have been able to unload one
of the two mtk-vcodec-* modules while keeping the other one active.
Hans Verkuil Oct. 8, 2020, 1:07 p.m. UTC | #4
Hi Alexandre,

On 04/10/2020 14:22, Alexandre Courbot wrote:
> The addition of MT8183 support added a dependency on the SCP remoteproc
> module. However the initial patch used the "select" Kconfig directive,
> which may result in the SCP module to not be compiled if remoteproc was
> disabled. In such a case, mtk-vcodec would try to link against
> non-existent SCP symbols. "select" was clearly misused here as explained
> in kconfig-language.txt.
> 
> Replace this by a "depends" directive on at least one of the VPU and
> SCP modules, to allow the driver to be compiled as long as one of these
> is enabled, and adapt the code to support this new scenario.
> 
> Also adapt the Kconfig text to explain the extra requirements for MT8173
> and MT8183.
> 
> Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
> ---
>  drivers/media/platform/Kconfig                | 10 +--
>  .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 72 ++++++++++++-------
>  2 files changed, 54 insertions(+), 28 deletions(-)
> 
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index a3cb104956d5..98eb62e49ec2 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -253,14 +253,16 @@ config VIDEO_MEDIATEK_VCODEC
>  	depends on MTK_IOMMU || COMPILE_TEST
>  	depends on VIDEO_DEV && VIDEO_V4L2
>  	depends on ARCH_MEDIATEK || COMPILE_TEST
> +	depends on VIDEO_MEDIATEK_VPU || MTK_SCP

Close, but no cigar.

If VIDEO_MEDIATEK_VPU=y and MTK_SCP=m, then VIDEO_MEDIATEK_VCODEC can be configured
to y, and then it won't be able to find the scp_ functions.

To be honest, I'm not sure how to solve this.

Regards,

	Hans

>  	select VIDEOBUF2_DMA_CONTIG
>  	select V4L2_MEM2MEM_DEV
> -	select VIDEO_MEDIATEK_VPU
> -	select MTK_SCP
>  	help
>  	    Mediatek video codec driver provides HW capability to
> -	    encode and decode in a range of video formats
> -	    This driver rely on VPU driver to communicate with VPU.
> +	    encode and decode in a range of video formats on MT8173
> +	    and MT8183.
> +
> +	    Note that support for MT8173 requires VIDEO_MEDIATEK_VPU to
> +	    also be selected. Support for MT8183 depends on MTK_SCP.
>  
>  	    To compile this driver as modules, choose M here: the
>  	    modules will be called mtk-vcodec-dec and mtk-vcodec-enc.
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
> index 6c2a2568d844..23a80027a8fb 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
> @@ -13,6 +13,7 @@ struct mtk_vcodec_fw_ops {
>  			    mtk_vcodec_ipi_handler handler, const char *name, void *priv);
>  	int (*ipi_send)(struct mtk_vcodec_fw *fw, int id, void *buf,
>  			unsigned int len, unsigned int wait);
> +	void (*release)(struct mtk_vcodec_fw *fw);
>  };
>  
>  struct mtk_vcodec_fw {
> @@ -22,6 +23,8 @@ struct mtk_vcodec_fw {
>  	struct mtk_scp *scp;
>  };
>  
> +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
> +
>  static int mtk_vcodec_vpu_load_firmware(struct mtk_vcodec_fw *fw)
>  {
>  	return vpu_load_firmware(fw->pdev);
> @@ -64,6 +67,27 @@ static int mtk_vcodec_vpu_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
>  	return vpu_ipi_send(fw->pdev, id, buf, len);
>  }
>  
> +static void mtk_vcodec_vpu_release(struct mtk_vcodec_fw *fw)
> +{
> +	put_device(&fw->pdev->dev);
> +}
> +
> +static void mtk_vcodec_vpu_reset_handler(void *priv)
> +{
> +	struct mtk_vcodec_dev *dev = priv;
> +	struct mtk_vcodec_ctx *ctx;
> +
> +	mtk_v4l2_err("Watchdog timeout!!");
> +
> +	mutex_lock(&dev->dev_mutex);
> +	list_for_each_entry(ctx, &dev->ctx_list, list) {
> +		ctx->state = MTK_STATE_ABORT;
> +		mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
> +			       ctx->id);
> +	}
> +	mutex_unlock(&dev->dev_mutex);
> +}
> +
>  static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
>  	.load_firmware = mtk_vcodec_vpu_load_firmware,
>  	.get_vdec_capa = mtk_vcodec_vpu_get_vdec_capa,
> @@ -71,8 +95,13 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
>  	.map_dm_addr = mtk_vcodec_vpu_map_dm_addr,
>  	.ipi_register = mtk_vcodec_vpu_set_ipi_register,
>  	.ipi_send = mtk_vcodec_vpu_ipi_send,
> +	.release = mtk_vcodec_vpu_release,
>  };
>  
> +#endif  /* IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU) */
> +
> +#if IS_ENABLED(CONFIG_MTK_SCP)
> +
>  static int mtk_vcodec_scp_load_firmware(struct mtk_vcodec_fw *fw)
>  {
>  	return rproc_boot(scp_get_rproc(fw->scp));
> @@ -107,6 +136,11 @@ static int mtk_vcodec_scp_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
>  	return scp_ipi_send(fw->scp, id, buf, len, wait);
>  }
>  
> +static void mtk_vcodec_scp_release(struct mtk_vcodec_fw *fw)
> +{
> +	scp_put(fw->scp);
> +}
> +
>  static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
>  	.load_firmware = mtk_vcodec_scp_load_firmware,
>  	.get_vdec_capa = mtk_vcodec_scp_get_vdec_capa,
> @@ -114,23 +148,10 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
>  	.map_dm_addr = mtk_vcodec_vpu_scp_dm_addr,
>  	.ipi_register = mtk_vcodec_scp_set_ipi_register,
>  	.ipi_send = mtk_vcodec_scp_ipi_send,
> +	.release = mtk_vcodec_scp_release,
>  };
>  
> -static void mtk_vcodec_reset_handler(void *priv)
> -{
> -	struct mtk_vcodec_dev *dev = priv;
> -	struct mtk_vcodec_ctx *ctx;
> -
> -	mtk_v4l2_err("Watchdog timeout!!");
> -
> -	mutex_lock(&dev->dev_mutex);
> -	list_for_each_entry(ctx, &dev->ctx_list, list) {
> -		ctx->state = MTK_STATE_ABORT;
> -		mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
> -			       ctx->id);
> -	}
> -	mutex_unlock(&dev->dev_mutex);
> -}
> +#endif  /* IS_ENABLED(CONFIG_MTK_SCP) */
>  
>  struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>  					   enum mtk_vcodec_fw_type type,
> @@ -143,16 +164,22 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>  
>  	switch (type) {
>  	case VPU:
> +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
>  		ops = &mtk_vcodec_vpu_msg;
>  		fw_pdev = vpu_get_plat_device(dev->plat_dev);
>  		if (!fw_pdev) {
>  			mtk_v4l2_err("firmware device is not ready");
>  			return ERR_PTR(-EINVAL);
>  		}
> -		vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_reset_handler,
> +		vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_vpu_reset_handler,
>  				    dev, rst_id);
>  		break;
> +#else
> +		mtk_v4l2_err("no VPU support in this kernel");
> +		return ERR_PTR(-ENODEV);
> +#endif
>  	case SCP:
> +#if IS_ENABLED(CONFIG_MTK_SCP)
>  		ops = &mtk_vcodec_rproc_msg;
>  		scp = scp_get(dev->plat_dev);
>  		if (!scp) {
> @@ -160,6 +187,10 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>  			return ERR_PTR(-EPROBE_DEFER);
>  		}
>  		break;
> +#else
> +		mtk_v4l2_err("no SCP support in this kernel");
> +		return ERR_PTR(-ENODEV);
> +#endif
>  	default:
>  		mtk_v4l2_err("invalid vcodec fw type");
>  		return ERR_PTR(-EINVAL);
> @@ -180,14 +211,7 @@ EXPORT_SYMBOL_GPL(mtk_vcodec_fw_select);
>  
>  void mtk_vcodec_fw_release(struct mtk_vcodec_fw *fw)
>  {
> -	switch (fw->type) {
> -	case VPU:
> -		put_device(&fw->pdev->dev);
> -		break;
> -	case SCP:
> -		scp_put(fw->scp);
> -		break;
> -	}
> +	fw->ops->release(fw);
>  }
>  EXPORT_SYMBOL_GPL(mtk_vcodec_fw_release);
>  
>
Hans Verkuil Oct. 8, 2020, 1:12 p.m. UTC | #5
On 08/10/2020 15:07, Hans Verkuil wrote:
> Hi Alexandre,
> 
> On 04/10/2020 14:22, Alexandre Courbot wrote:
>> The addition of MT8183 support added a dependency on the SCP remoteproc
>> module. However the initial patch used the "select" Kconfig directive,
>> which may result in the SCP module to not be compiled if remoteproc was
>> disabled. In such a case, mtk-vcodec would try to link against
>> non-existent SCP symbols. "select" was clearly misused here as explained
>> in kconfig-language.txt.
>>
>> Replace this by a "depends" directive on at least one of the VPU and
>> SCP modules, to allow the driver to be compiled as long as one of these
>> is enabled, and adapt the code to support this new scenario.
>>
>> Also adapt the Kconfig text to explain the extra requirements for MT8173
>> and MT8183.
>>
>> Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
>> Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
>> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
>> ---
>>  drivers/media/platform/Kconfig                | 10 +--
>>  .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 72 ++++++++++++-------
>>  2 files changed, 54 insertions(+), 28 deletions(-)
>>
>> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
>> index a3cb104956d5..98eb62e49ec2 100644
>> --- a/drivers/media/platform/Kconfig
>> +++ b/drivers/media/platform/Kconfig
>> @@ -253,14 +253,16 @@ config VIDEO_MEDIATEK_VCODEC
>>  	depends on MTK_IOMMU || COMPILE_TEST
>>  	depends on VIDEO_DEV && VIDEO_V4L2
>>  	depends on ARCH_MEDIATEK || COMPILE_TEST
>> +	depends on VIDEO_MEDIATEK_VPU || MTK_SCP
> 
> Close, but no cigar.
> 
> If VIDEO_MEDIATEK_VPU=y and MTK_SCP=m, then VIDEO_MEDIATEK_VCODEC can be configured
> to y, and then it won't be able to find the scp_ functions.
> 
> To be honest, I'm not sure how to solve this.

Found it. Add this:

        depends on MTK_SCP || !MTK_SCP
        depends on VIDEO_MEDIATEK_VPU || !VIDEO_MEDIATEK_VPU

Ugly as hell, but it appears to be the correct incantation for this.

Regards,

	Hans

> 
> Regards,
> 
> 	Hans
> 
>>  	select VIDEOBUF2_DMA_CONTIG
>>  	select V4L2_MEM2MEM_DEV
>> -	select VIDEO_MEDIATEK_VPU
>> -	select MTK_SCP
>>  	help
>>  	    Mediatek video codec driver provides HW capability to
>> -	    encode and decode in a range of video formats
>> -	    This driver rely on VPU driver to communicate with VPU.
>> +	    encode and decode in a range of video formats on MT8173
>> +	    and MT8183.
>> +
>> +	    Note that support for MT8173 requires VIDEO_MEDIATEK_VPU to
>> +	    also be selected. Support for MT8183 depends on MTK_SCP.
>>  
>>  	    To compile this driver as modules, choose M here: the
>>  	    modules will be called mtk-vcodec-dec and mtk-vcodec-enc.
>> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
>> index 6c2a2568d844..23a80027a8fb 100644
>> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
>> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
>> @@ -13,6 +13,7 @@ struct mtk_vcodec_fw_ops {
>>  			    mtk_vcodec_ipi_handler handler, const char *name, void *priv);
>>  	int (*ipi_send)(struct mtk_vcodec_fw *fw, int id, void *buf,
>>  			unsigned int len, unsigned int wait);
>> +	void (*release)(struct mtk_vcodec_fw *fw);
>>  };
>>  
>>  struct mtk_vcodec_fw {
>> @@ -22,6 +23,8 @@ struct mtk_vcodec_fw {
>>  	struct mtk_scp *scp;
>>  };
>>  
>> +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
>> +
>>  static int mtk_vcodec_vpu_load_firmware(struct mtk_vcodec_fw *fw)
>>  {
>>  	return vpu_load_firmware(fw->pdev);
>> @@ -64,6 +67,27 @@ static int mtk_vcodec_vpu_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
>>  	return vpu_ipi_send(fw->pdev, id, buf, len);
>>  }
>>  
>> +static void mtk_vcodec_vpu_release(struct mtk_vcodec_fw *fw)
>> +{
>> +	put_device(&fw->pdev->dev);
>> +}
>> +
>> +static void mtk_vcodec_vpu_reset_handler(void *priv)
>> +{
>> +	struct mtk_vcodec_dev *dev = priv;
>> +	struct mtk_vcodec_ctx *ctx;
>> +
>> +	mtk_v4l2_err("Watchdog timeout!!");
>> +
>> +	mutex_lock(&dev->dev_mutex);
>> +	list_for_each_entry(ctx, &dev->ctx_list, list) {
>> +		ctx->state = MTK_STATE_ABORT;
>> +		mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
>> +			       ctx->id);
>> +	}
>> +	mutex_unlock(&dev->dev_mutex);
>> +}
>> +
>>  static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
>>  	.load_firmware = mtk_vcodec_vpu_load_firmware,
>>  	.get_vdec_capa = mtk_vcodec_vpu_get_vdec_capa,
>> @@ -71,8 +95,13 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
>>  	.map_dm_addr = mtk_vcodec_vpu_map_dm_addr,
>>  	.ipi_register = mtk_vcodec_vpu_set_ipi_register,
>>  	.ipi_send = mtk_vcodec_vpu_ipi_send,
>> +	.release = mtk_vcodec_vpu_release,
>>  };
>>  
>> +#endif  /* IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU) */
>> +
>> +#if IS_ENABLED(CONFIG_MTK_SCP)
>> +
>>  static int mtk_vcodec_scp_load_firmware(struct mtk_vcodec_fw *fw)
>>  {
>>  	return rproc_boot(scp_get_rproc(fw->scp));
>> @@ -107,6 +136,11 @@ static int mtk_vcodec_scp_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
>>  	return scp_ipi_send(fw->scp, id, buf, len, wait);
>>  }
>>  
>> +static void mtk_vcodec_scp_release(struct mtk_vcodec_fw *fw)
>> +{
>> +	scp_put(fw->scp);
>> +}
>> +
>>  static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
>>  	.load_firmware = mtk_vcodec_scp_load_firmware,
>>  	.get_vdec_capa = mtk_vcodec_scp_get_vdec_capa,
>> @@ -114,23 +148,10 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
>>  	.map_dm_addr = mtk_vcodec_vpu_scp_dm_addr,
>>  	.ipi_register = mtk_vcodec_scp_set_ipi_register,
>>  	.ipi_send = mtk_vcodec_scp_ipi_send,
>> +	.release = mtk_vcodec_scp_release,
>>  };
>>  
>> -static void mtk_vcodec_reset_handler(void *priv)
>> -{
>> -	struct mtk_vcodec_dev *dev = priv;
>> -	struct mtk_vcodec_ctx *ctx;
>> -
>> -	mtk_v4l2_err("Watchdog timeout!!");
>> -
>> -	mutex_lock(&dev->dev_mutex);
>> -	list_for_each_entry(ctx, &dev->ctx_list, list) {
>> -		ctx->state = MTK_STATE_ABORT;
>> -		mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
>> -			       ctx->id);
>> -	}
>> -	mutex_unlock(&dev->dev_mutex);
>> -}
>> +#endif  /* IS_ENABLED(CONFIG_MTK_SCP) */
>>  
>>  struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>>  					   enum mtk_vcodec_fw_type type,
>> @@ -143,16 +164,22 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>>  
>>  	switch (type) {
>>  	case VPU:
>> +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
>>  		ops = &mtk_vcodec_vpu_msg;
>>  		fw_pdev = vpu_get_plat_device(dev->plat_dev);
>>  		if (!fw_pdev) {
>>  			mtk_v4l2_err("firmware device is not ready");
>>  			return ERR_PTR(-EINVAL);
>>  		}
>> -		vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_reset_handler,
>> +		vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_vpu_reset_handler,
>>  				    dev, rst_id);
>>  		break;
>> +#else
>> +		mtk_v4l2_err("no VPU support in this kernel");
>> +		return ERR_PTR(-ENODEV);
>> +#endif
>>  	case SCP:
>> +#if IS_ENABLED(CONFIG_MTK_SCP)
>>  		ops = &mtk_vcodec_rproc_msg;
>>  		scp = scp_get(dev->plat_dev);
>>  		if (!scp) {
>> @@ -160,6 +187,10 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
>>  			return ERR_PTR(-EPROBE_DEFER);
>>  		}
>>  		break;
>> +#else
>> +		mtk_v4l2_err("no SCP support in this kernel");
>> +		return ERR_PTR(-ENODEV);
>> +#endif
>>  	default:
>>  		mtk_v4l2_err("invalid vcodec fw type");
>>  		return ERR_PTR(-EINVAL);
>> @@ -180,14 +211,7 @@ EXPORT_SYMBOL_GPL(mtk_vcodec_fw_select);
>>  
>>  void mtk_vcodec_fw_release(struct mtk_vcodec_fw *fw)
>>  {
>> -	switch (fw->type) {
>> -	case VPU:
>> -		put_device(&fw->pdev->dev);
>> -		break;
>> -	case SCP:
>> -		scp_put(fw->scp);
>> -		break;
>> -	}
>> +	fw->ops->release(fw);
>>  }
>>  EXPORT_SYMBOL_GPL(mtk_vcodec_fw_release);
>>  
>>
>
Alexandre Courbot Oct. 8, 2020, 2:02 p.m. UTC | #6
Hi Hans, thanks for taking the time to look at this!

On Thu, Oct 8, 2020 at 10:12 PM Hans Verkuil <hverkuil-cisco@xs4all.nl> wrote:
>
> On 08/10/2020 15:07, Hans Verkuil wrote:
> > Hi Alexandre,
> >
> > On 04/10/2020 14:22, Alexandre Courbot wrote:
> >> The addition of MT8183 support added a dependency on the SCP remoteproc
> >> module. However the initial patch used the "select" Kconfig directive,
> >> which may result in the SCP module to not be compiled if remoteproc was
> >> disabled. In such a case, mtk-vcodec would try to link against
> >> non-existent SCP symbols. "select" was clearly misused here as explained
> >> in kconfig-language.txt.
> >>
> >> Replace this by a "depends" directive on at least one of the VPU and
> >> SCP modules, to allow the driver to be compiled as long as one of these
> >> is enabled, and adapt the code to support this new scenario.
> >>
> >> Also adapt the Kconfig text to explain the extra requirements for MT8173
> >> and MT8183.
> >>
> >> Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> >> Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
> >> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
> >> ---
> >>  drivers/media/platform/Kconfig                | 10 +--
> >>  .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 72 ++++++++++++-------
> >>  2 files changed, 54 insertions(+), 28 deletions(-)
> >>
> >> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> >> index a3cb104956d5..98eb62e49ec2 100644
> >> --- a/drivers/media/platform/Kconfig
> >> +++ b/drivers/media/platform/Kconfig
> >> @@ -253,14 +253,16 @@ config VIDEO_MEDIATEK_VCODEC
> >>      depends on MTK_IOMMU || COMPILE_TEST
> >>      depends on VIDEO_DEV && VIDEO_V4L2
> >>      depends on ARCH_MEDIATEK || COMPILE_TEST
> >> +    depends on VIDEO_MEDIATEK_VPU || MTK_SCP
> >
> > Close, but no cigar.
> >
> > If VIDEO_MEDIATEK_VPU=y and MTK_SCP=m, then VIDEO_MEDIATEK_VCODEC can be configured
> > to y, and then it won't be able to find the scp_ functions.
> >
> > To be honest, I'm not sure how to solve this.
>
> Found it. Add this:
>
>         depends on MTK_SCP || !MTK_SCP
>         depends on VIDEO_MEDIATEK_VPU || !VIDEO_MEDIATEK_VPU
>
> Ugly as hell, but it appears to be the correct incantation for this.

But doesn't it mean that the driver can be compiled if !MTK_SCP and
!VIDEO_MEDIATEK_VPU? That's the one case we want to avoid.
Hans Verkuil Oct. 8, 2020, 4:13 p.m. UTC | #7
On 08/10/2020 16:02, Alexandre Courbot wrote:
> Hi Hans, thanks for taking the time to look at this!
> 
> On Thu, Oct 8, 2020 at 10:12 PM Hans Verkuil <hverkuil-cisco@xs4all.nl> wrote:
>>
>> On 08/10/2020 15:07, Hans Verkuil wrote:
>>> Hi Alexandre,
>>>
>>> On 04/10/2020 14:22, Alexandre Courbot wrote:
>>>> The addition of MT8183 support added a dependency on the SCP remoteproc
>>>> module. However the initial patch used the "select" Kconfig directive,
>>>> which may result in the SCP module to not be compiled if remoteproc was
>>>> disabled. In such a case, mtk-vcodec would try to link against
>>>> non-existent SCP symbols. "select" was clearly misused here as explained
>>>> in kconfig-language.txt.
>>>>
>>>> Replace this by a "depends" directive on at least one of the VPU and
>>>> SCP modules, to allow the driver to be compiled as long as one of these
>>>> is enabled, and adapt the code to support this new scenario.
>>>>
>>>> Also adapt the Kconfig text to explain the extra requirements for MT8173
>>>> and MT8183.
>>>>
>>>> Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
>>>> Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
>>>> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
>>>> ---
>>>>  drivers/media/platform/Kconfig                | 10 +--
>>>>  .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 72 ++++++++++++-------
>>>>  2 files changed, 54 insertions(+), 28 deletions(-)
>>>>
>>>> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
>>>> index a3cb104956d5..98eb62e49ec2 100644
>>>> --- a/drivers/media/platform/Kconfig
>>>> +++ b/drivers/media/platform/Kconfig
>>>> @@ -253,14 +253,16 @@ config VIDEO_MEDIATEK_VCODEC
>>>>      depends on MTK_IOMMU || COMPILE_TEST
>>>>      depends on VIDEO_DEV && VIDEO_V4L2
>>>>      depends on ARCH_MEDIATEK || COMPILE_TEST
>>>> +    depends on VIDEO_MEDIATEK_VPU || MTK_SCP
>>>
>>> Close, but no cigar.
>>>
>>> If VIDEO_MEDIATEK_VPU=y and MTK_SCP=m, then VIDEO_MEDIATEK_VCODEC can be configured
>>> to y, and then it won't be able to find the scp_ functions.
>>>
>>> To be honest, I'm not sure how to solve this.
>>
>> Found it. Add this:
>>
>>         depends on MTK_SCP || !MTK_SCP
>>         depends on VIDEO_MEDIATEK_VPU || !VIDEO_MEDIATEK_VPU
>>
>> Ugly as hell, but it appears to be the correct incantation for this.
> 
> But doesn't it mean that the driver can be compiled if !MTK_SCP and
> !VIDEO_MEDIATEK_VPU? That's the one case we want to avoid.

No, because you still have:

	depends on VIDEO_MEDIATEK_VPU || MTK_SCP

So at least one of these must be set.

Just try it :-)

Regards,

	Hans
Alexandre Courbot Oct. 9, 2020, 4:30 a.m. UTC | #8
On Fri, Oct 9, 2020 at 1:13 AM Hans Verkuil <hverkuil-cisco@xs4all.nl> wrote:
>
> On 08/10/2020 16:02, Alexandre Courbot wrote:
> > Hi Hans, thanks for taking the time to look at this!
> >
> > On Thu, Oct 8, 2020 at 10:12 PM Hans Verkuil <hverkuil-cisco@xs4all.nl> wrote:
> >>
> >> On 08/10/2020 15:07, Hans Verkuil wrote:
> >>> Hi Alexandre,
> >>>
> >>> On 04/10/2020 14:22, Alexandre Courbot wrote:
> >>>> The addition of MT8183 support added a dependency on the SCP remoteproc
> >>>> module. However the initial patch used the "select" Kconfig directive,
> >>>> which may result in the SCP module to not be compiled if remoteproc was
> >>>> disabled. In such a case, mtk-vcodec would try to link against
> >>>> non-existent SCP symbols. "select" was clearly misused here as explained
> >>>> in kconfig-language.txt.
> >>>>
> >>>> Replace this by a "depends" directive on at least one of the VPU and
> >>>> SCP modules, to allow the driver to be compiled as long as one of these
> >>>> is enabled, and adapt the code to support this new scenario.
> >>>>
> >>>> Also adapt the Kconfig text to explain the extra requirements for MT8173
> >>>> and MT8183.
> >>>>
> >>>> Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> >>>> Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
> >>>> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
> >>>> ---
> >>>>  drivers/media/platform/Kconfig                | 10 +--
> >>>>  .../media/platform/mtk-vcodec/mtk_vcodec_fw.c | 72 ++++++++++++-------
> >>>>  2 files changed, 54 insertions(+), 28 deletions(-)
> >>>>
> >>>> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> >>>> index a3cb104956d5..98eb62e49ec2 100644
> >>>> --- a/drivers/media/platform/Kconfig
> >>>> +++ b/drivers/media/platform/Kconfig
> >>>> @@ -253,14 +253,16 @@ config VIDEO_MEDIATEK_VCODEC
> >>>>      depends on MTK_IOMMU || COMPILE_TEST
> >>>>      depends on VIDEO_DEV && VIDEO_V4L2
> >>>>      depends on ARCH_MEDIATEK || COMPILE_TEST
> >>>> +    depends on VIDEO_MEDIATEK_VPU || MTK_SCP
> >>>
> >>> Close, but no cigar.
> >>>
> >>> If VIDEO_MEDIATEK_VPU=y and MTK_SCP=m, then VIDEO_MEDIATEK_VCODEC can be configured
> >>> to y, and then it won't be able to find the scp_ functions.
> >>>
> >>> To be honest, I'm not sure how to solve this.
> >>
> >> Found it. Add this:
> >>
> >>         depends on MTK_SCP || !MTK_SCP
> >>         depends on VIDEO_MEDIATEK_VPU || !VIDEO_MEDIATEK_VPU
> >>
> >> Ugly as hell, but it appears to be the correct incantation for this.
> >
> > But doesn't it mean that the driver can be compiled if !MTK_SCP and
> > !VIDEO_MEDIATEK_VPU? That's the one case we want to avoid.
>
> No, because you still have:
>
>         depends on VIDEO_MEDIATEK_VPU || MTK_SCP
>
> So at least one of these must be set.
>
> Just try it :-)

Aha, I misread your message and thought you suggested replacing the
dependencies with these two lines. In this case it would certainly
work! Thanks for the suggestion, I'll send a v3 soon.

>
> Regards,
>
>         Hans
diff mbox series

Patch

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index a3cb104956d5..98eb62e49ec2 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -253,14 +253,16 @@  config VIDEO_MEDIATEK_VCODEC
 	depends on MTK_IOMMU || COMPILE_TEST
 	depends on VIDEO_DEV && VIDEO_V4L2
 	depends on ARCH_MEDIATEK || COMPILE_TEST
+	depends on VIDEO_MEDIATEK_VPU || MTK_SCP
 	select VIDEOBUF2_DMA_CONTIG
 	select V4L2_MEM2MEM_DEV
-	select VIDEO_MEDIATEK_VPU
-	select MTK_SCP
 	help
 	    Mediatek video codec driver provides HW capability to
-	    encode and decode in a range of video formats
-	    This driver rely on VPU driver to communicate with VPU.
+	    encode and decode in a range of video formats on MT8173
+	    and MT8183.
+
+	    Note that support for MT8173 requires VIDEO_MEDIATEK_VPU to
+	    also be selected. Support for MT8183 depends on MTK_SCP.
 
 	    To compile this driver as modules, choose M here: the
 	    modules will be called mtk-vcodec-dec and mtk-vcodec-enc.
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
index 6c2a2568d844..23a80027a8fb 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw.c
@@ -13,6 +13,7 @@  struct mtk_vcodec_fw_ops {
 			    mtk_vcodec_ipi_handler handler, const char *name, void *priv);
 	int (*ipi_send)(struct mtk_vcodec_fw *fw, int id, void *buf,
 			unsigned int len, unsigned int wait);
+	void (*release)(struct mtk_vcodec_fw *fw);
 };
 
 struct mtk_vcodec_fw {
@@ -22,6 +23,8 @@  struct mtk_vcodec_fw {
 	struct mtk_scp *scp;
 };
 
+#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
+
 static int mtk_vcodec_vpu_load_firmware(struct mtk_vcodec_fw *fw)
 {
 	return vpu_load_firmware(fw->pdev);
@@ -64,6 +67,27 @@  static int mtk_vcodec_vpu_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
 	return vpu_ipi_send(fw->pdev, id, buf, len);
 }
 
+static void mtk_vcodec_vpu_release(struct mtk_vcodec_fw *fw)
+{
+	put_device(&fw->pdev->dev);
+}
+
+static void mtk_vcodec_vpu_reset_handler(void *priv)
+{
+	struct mtk_vcodec_dev *dev = priv;
+	struct mtk_vcodec_ctx *ctx;
+
+	mtk_v4l2_err("Watchdog timeout!!");
+
+	mutex_lock(&dev->dev_mutex);
+	list_for_each_entry(ctx, &dev->ctx_list, list) {
+		ctx->state = MTK_STATE_ABORT;
+		mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
+			       ctx->id);
+	}
+	mutex_unlock(&dev->dev_mutex);
+}
+
 static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
 	.load_firmware = mtk_vcodec_vpu_load_firmware,
 	.get_vdec_capa = mtk_vcodec_vpu_get_vdec_capa,
@@ -71,8 +95,13 @@  static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
 	.map_dm_addr = mtk_vcodec_vpu_map_dm_addr,
 	.ipi_register = mtk_vcodec_vpu_set_ipi_register,
 	.ipi_send = mtk_vcodec_vpu_ipi_send,
+	.release = mtk_vcodec_vpu_release,
 };
 
+#endif  /* IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU) */
+
+#if IS_ENABLED(CONFIG_MTK_SCP)
+
 static int mtk_vcodec_scp_load_firmware(struct mtk_vcodec_fw *fw)
 {
 	return rproc_boot(scp_get_rproc(fw->scp));
@@ -107,6 +136,11 @@  static int mtk_vcodec_scp_ipi_send(struct mtk_vcodec_fw *fw, int id, void *buf,
 	return scp_ipi_send(fw->scp, id, buf, len, wait);
 }
 
+static void mtk_vcodec_scp_release(struct mtk_vcodec_fw *fw)
+{
+	scp_put(fw->scp);
+}
+
 static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
 	.load_firmware = mtk_vcodec_scp_load_firmware,
 	.get_vdec_capa = mtk_vcodec_scp_get_vdec_capa,
@@ -114,23 +148,10 @@  static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
 	.map_dm_addr = mtk_vcodec_vpu_scp_dm_addr,
 	.ipi_register = mtk_vcodec_scp_set_ipi_register,
 	.ipi_send = mtk_vcodec_scp_ipi_send,
+	.release = mtk_vcodec_scp_release,
 };
 
-static void mtk_vcodec_reset_handler(void *priv)
-{
-	struct mtk_vcodec_dev *dev = priv;
-	struct mtk_vcodec_ctx *ctx;
-
-	mtk_v4l2_err("Watchdog timeout!!");
-
-	mutex_lock(&dev->dev_mutex);
-	list_for_each_entry(ctx, &dev->ctx_list, list) {
-		ctx->state = MTK_STATE_ABORT;
-		mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ABORT",
-			       ctx->id);
-	}
-	mutex_unlock(&dev->dev_mutex);
-}
+#endif  /* IS_ENABLED(CONFIG_MTK_SCP) */
 
 struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
 					   enum mtk_vcodec_fw_type type,
@@ -143,16 +164,22 @@  struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
 
 	switch (type) {
 	case VPU:
+#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VPU)
 		ops = &mtk_vcodec_vpu_msg;
 		fw_pdev = vpu_get_plat_device(dev->plat_dev);
 		if (!fw_pdev) {
 			mtk_v4l2_err("firmware device is not ready");
 			return ERR_PTR(-EINVAL);
 		}
-		vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_reset_handler,
+		vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_vpu_reset_handler,
 				    dev, rst_id);
 		break;
+#else
+		mtk_v4l2_err("no VPU support in this kernel");
+		return ERR_PTR(-ENODEV);
+#endif
 	case SCP:
+#if IS_ENABLED(CONFIG_MTK_SCP)
 		ops = &mtk_vcodec_rproc_msg;
 		scp = scp_get(dev->plat_dev);
 		if (!scp) {
@@ -160,6 +187,10 @@  struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
 			return ERR_PTR(-EPROBE_DEFER);
 		}
 		break;
+#else
+		mtk_v4l2_err("no SCP support in this kernel");
+		return ERR_PTR(-ENODEV);
+#endif
 	default:
 		mtk_v4l2_err("invalid vcodec fw type");
 		return ERR_PTR(-EINVAL);
@@ -180,14 +211,7 @@  EXPORT_SYMBOL_GPL(mtk_vcodec_fw_select);
 
 void mtk_vcodec_fw_release(struct mtk_vcodec_fw *fw)
 {
-	switch (fw->type) {
-	case VPU:
-		put_device(&fw->pdev->dev);
-		break;
-	case SCP:
-		scp_put(fw->scp);
-		break;
-	}
+	fw->ops->release(fw);
 }
 EXPORT_SYMBOL_GPL(mtk_vcodec_fw_release);