On Tue, Oct 13, 2020 at 12:00 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>
> On 10/11/20 10:35 PM, 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@xxxxxxxxxxxxxxx>
> > Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
> > Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested
>
> That Ack applied to v2. I have not tested nor acked this version of the patch.
Sorry about that - I was careless and left it in the log.
>
> > Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
> > ---
> > drivers/media/platform/Kconfig | 22 +++++++++++++++----
> > drivers/media/platform/mtk-vcodec/Makefile | 10 +++++++--
> > .../platform/mtk-vcodec/mtk_vcodec_fw_priv.h | 18 +++++++++++++++
> > 3 files changed, 44 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> > index a3cb104956d5..457b6c39ddc0 100644
> > --- a/drivers/media/platform/Kconfig
> > +++ b/drivers/media/platform/Kconfig
> > @@ -253,18 +253,32 @@ 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
> > + # The two following lines ensure we have the same state ("m" or "y") as
> > + # our dependencies, to avoid missing symbols during link.
> > + depends on VIDEO_MEDIATEK_VPU || !VIDEO_MEDIATEK_VPU
> > + depends on MTK_SCP || !MTK_SCP
> > select VIDEOBUF2_DMA_CONTIG
> > select V4L2_MEM2MEM_DEV
> > - select VIDEO_MEDIATEK_VPU
> > - select MTK_SCP
> > + select VIDEO_MEDIATEK_VCODEC_VPU if VIDEO_MEDIATEK_VPU
> > + select VIDEO_MEDIATEK_VCODEC_SCP if 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.
> >
> > +config VIDEO_MEDIATEK_VCODEC_VPU
> > + bool
> > +
> > +config VIDEO_MEDIATEK_VCODEC_SCP
> > + bool
> > +
> > config VIDEO_MEM2MEM_DEINTERLACE
> > tristate "Deinterlace support"
> > depends on VIDEO_DEV && VIDEO_V4L2
> > diff --git a/drivers/media/platform/mtk-vcodec/Makefile b/drivers/media/platform/mtk-vcodec/Makefile
> > index 6e1ea3a9f052..4618d43dbbc8 100644
> > --- a/drivers/media/platform/mtk-vcodec/Makefile
> > +++ b/drivers/media/platform/mtk-vcodec/Makefile
> > @@ -25,5 +25,11 @@ mtk-vcodec-enc-y := venc/venc_vp8_if.o \
> > mtk-vcodec-common-y := mtk_vcodec_intr.o \
> > mtk_vcodec_util.o \
> > mtk_vcodec_fw.o \
> > - mtk_vcodec_fw_vpu.o \
> > - mtk_vcodec_fw_scp.o
> > +
> > +ifneq ($(CONFIG_VIDEO_MEDIATEK_VCODEC_VPU),)
> > +mtk-vcodec-common-y += mtk_vcodec_fw_vpu.o
> > +endif
> > +
> > +ifneq ($(CONFIG_VIDEO_MEDIATEK_VCODEC_SCP),)
> > +mtk-vcodec-common-y += mtk_vcodec_fw_scp.o
> > +endif
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_priv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_priv.h
> > index 51f1694a7c7d..b41e66185cec 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_priv.h
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_priv.h
> > @@ -27,8 +27,26 @@ struct mtk_vcodec_fw_ops {
> > void (*release)(struct mtk_vcodec_fw *fw);
> > };
> >
> > +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VCODEC_VPU)
> > struct mtk_vcodec_fw *mtk_vcodec_fw_vpu_init(struct mtk_vcodec_dev *dev,
> > enum mtk_vcodec_fw_use fw_use);
> > +#else
> > +static inline struct mtk_vcodec_fw *
> > +mtk_vcodec_fw_vpu_init(struct mtk_vcodec_dev *dev,
> > + enum mtk_vcodec_fw_use fw_use)
> > +{
> > + return ERR_PTR(-ENODEV);
> > +}
> > +#endif /* CONFIG_VIDEO_MEDIATEK_VCODEC_VPU */
> > +
> > +#if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VCODEC_SCP)
> > struct mtk_vcodec_fw *mtk_vcodec_fw_scp_init(struct mtk_vcodec_dev *dev);
> > +#else
> > +static inline struct mtk_vcodec_fw *
> > +mtk_vcodec_fw_scp_init(struct mtk_vcodec_dev *dev)
> > +{
> > + return ERR_PTR(-ENODEV);
> > +}
> > +#endif /* CONFIG_VIDEO_MEDIATEK_VCODEC_SCP */
> >
> > #endif /* _MTK_VCODEC_FW_PRIV_H_ */
> >
>
>
> --
> ~Randy
> Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
