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Message-ID: <b4b7463e72f20480fbdcc5b90a4036d8c39835d9.camel@mediatek.com>
Date: Mon, 23 Oct 2023 03:15:12 +0000
From: Yunfei Dong (董云飞)
<Yunfei.Dong@...iatek.com>
To: "sebastian.fricke@...labora.com" <sebastian.fricke@...labora.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
"frkoenig@...omium.org" <frkoenig@...omium.org>,
"stevecho@...omium.org" <stevecho@...omium.org>,
"wenst@...omium.org" <wenst@...omium.org>,
"nhebert@...omium.org" <nhebert@...omium.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"nicolas.dufresne@...labora.com" <nicolas.dufresne@...labora.com>,
"daniel@...ll.ch" <daniel@...ll.ch>,
Project_Global_Chrome_Upstream_Group
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
"benjamin.gaignard@...labora.com" <benjamin.gaignard@...labora.com>,
"hverkuil-cisco@...all.nl" <hverkuil-cisco@...all.nl>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"hsinyi@...omium.org" <hsinyi@...omium.org>,
"angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>,
"nfraprado@...labora.com" <nfraprado@...labora.com>
Subject: Re: [PATCH 1/7] media: mediatek: vcodec: Getting the chip name of
each platform
Hi Sebastian,
Thanks for your advice.
Send the patch v2 to fix the below items:
Fix the commit message for some patches.
Fix the level of mt8195 and mt8192.
Best Regards,
Yunfei Dong
On Sat, 2023-10-21 at 10:30 +0200, Sebastian Fricke wrote:
> Hey Yunfei,
>
> Thanks for your patches!
>
> Could you provide a cover-letter for the next version please?
> This will help to get a good context of why we need these changes and
> to
> store the changelog in a helpful manner.
> Thanks.
>
> On 16.10.2023 14:43, Yunfei Dong wrote:
> > Getting the chip name of each platform according to the device
> > compatible to set different parameter.
>
> I would reword this commit description slightly, basically what you
> change is that you store the chip name in context permanently and
> that
> you utilize a enum to be more descriptive.
>
> So how about:
>
> """
> Store the name of the chip in the context of the driver in order to
> be
> able to choose the correct configuration values for the different
> codecs.
> Use a enum value instead of an integer to store a more descriptive
> name.
> """
>
> A few more comments below.
>
> >
> > Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
> > ---
> > .../mediatek/vcodec/decoder/mtk_vcodec_dec.c | 24 +---------------
> > -
> > .../vcodec/decoder/mtk_vcodec_dec_drv.c | 26
> > +++++++++++++++++++
> > .../vcodec/decoder/mtk_vcodec_dec_drv.h | 17 ++++++++++++
> > 3 files changed, 44 insertions(+), 23 deletions(-)
> >
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > index 91ed576d6821..ba742f0e391d 100644
> > ---
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > +++
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
> > @@ -208,36 +208,14 @@ static int vidioc_vdec_dqbuf(struct file
> > *file, void *priv,
> > return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
> > }
> >
> > -static int mtk_vcodec_dec_get_chip_name(void *priv)
> > -{
> > - struct mtk_vcodec_dec_ctx *ctx = fh_to_dec_ctx(priv);
> > - struct device *dev = &ctx->dev->plat_dev->dev;
> > -
> > - if (of_device_is_compatible(dev->of_node, "mediatek,mt8173-
> > vcodec-dec"))
> > - return 8173;
> > - else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8183-vcodec-dec"))
> > - return 8183;
> > - else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8192-vcodec-dec"))
> > - return 8192;
> > - else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8195-vcodec-dec"))
> > - return 8195;
> > - else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8186-vcodec-dec"))
> > - return 8186;
> > - else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8188-vcodec-dec"))
> > - return 8188;
> > - else
> > - return 8173;
> > -}
> > -
> > static int vidioc_vdec_querycap(struct file *file, void *priv,
> > struct v4l2_capability *cap)
> > {
> > struct mtk_vcodec_dec_ctx *ctx = fh_to_dec_ctx(priv);
> > struct device *dev = &ctx->dev->plat_dev->dev;
> > - int platform_name = mtk_vcodec_dec_get_chip_name(priv);
> >
> > strscpy(cap->driver, dev->driver->name, sizeof(cap->driver));
> > - snprintf(cap->card, sizeof(cap->card), "MT%d video decoder",
> > platform_name);
> > + snprintf(cap->card, sizeof(cap->card), "MT%d video decoder",
> > ctx->dev->chip_name);
> >
> > return 0;
> > }
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .c
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .c
> > index 0a89ce452ac3..f47c98faf068 100644
> > ---
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .c
> > +++
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .c
> > @@ -326,6 +326,26 @@ static const struct v4l2_file_operations
> > mtk_vcodec_fops = {
> > .mmap = v4l2_m2m_fop_mmap,
> > };
> >
> > +static void mtk_vcodec_dec_get_chip_name(struct mtk_vcodec_dec_dev
> > *vdec_dev)
> > +{
> > + struct device *dev = &vdec_dev->plat_dev->dev;
> > +
> > + if (of_device_is_compatible(dev->of_node, "mediatek,mt8173-
> > vcodec-dec"))
> > + vdec_dev->chip_name = MTK_VDEC_MT8173;
> > + else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8183-vcodec-dec"))
> > + vdec_dev->chip_name = MTK_VDEC_MT8183;
> > + else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8192-vcodec-dec"))
> > + vdec_dev->chip_name = MTK_VDEC_MT8192;
> > + else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8195-vcodec-dec"))
> > + vdec_dev->chip_name = MTK_VDEC_MT8195;
> > + else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8186-vcodec-dec"))
> > + vdec_dev->chip_name = MTK_VDEC_MT8186;
> > + else if (of_device_is_compatible(dev->of_node,
> > "mediatek,mt8188-vcodec-dec"))
> > + vdec_dev->chip_name = MTK_VDEC_MT8188;
> > + else
> > + vdec_dev->chip_name = MTK_VDEC_INVAL;
> > +}
> > +
> > static int mtk_vcodec_probe(struct platform_device *pdev)
> > {
> > struct mtk_vcodec_dec_dev *dev;
> > @@ -341,6 +361,12 @@ static int mtk_vcodec_probe(struct
> > platform_device *pdev)
> > INIT_LIST_HEAD(&dev->ctx_list);
> > dev->plat_dev = pdev;
> >
> > + mtk_vcodec_dec_get_chip_name(dev);
> > + if (dev->chip_name == MTK_VDEC_INVAL) {
> > + dev_err(&pdev->dev, "Failed to get decoder chip name");
> > + return -EINVAL;
> > + }
> > +
> > dev->vdec_pdata = of_device_get_match_data(&pdev->dev);
> > if (!of_property_read_u32(pdev->dev.of_node, "mediatek,vpu",
> > &rproc_phandle)) {
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .h
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .h
> > index 7e36b2c69b7d..8f228ba9aa47 100644
> > ---
> > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .h
> > +++
> > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv
> > .h
> > @@ -18,6 +18,19 @@
> > #define IS_VDEC_LAT_ARCH(hw_arch) ((hw_arch) >=
> > MTK_VDEC_LAT_SINGLE_CORE)
> > #define IS_VDEC_INNER_RACING(capability) ((capability) &
> > MTK_VCODEC_INNER_RACING)
> >
> > +/*
> > + * enum mtk_vcodec_dec_chip_name - Structure used to separate
> > different platform
> > + */
>
> I don't feel like this comment is terribly helpful because it is
> pretty
> clear what the enum is about, I would just drop it.
>
> > +enum mtk_vcodec_dec_chip_name {
> > + MTK_VDEC_INVAL = 0,
> > + MTK_VDEC_MT8173 = 8173,
> > + MTK_VDEC_MT8183 = 8183,
> > + MTK_VDEC_MT8186 = 8186,
> > + MTK_VDEC_MT8188 = 8188,
> > + MTK_VDEC_MT8192 = 8192,
> > + MTK_VDEC_MT8195 = 8195,
> > +};
> > +
> > /*
> > * enum mtk_vdec_format_types - Structure used to get supported
> > * format types according to decoder capability
> > @@ -249,6 +262,8 @@ struct mtk_vcodec_dec_ctx {
> > * @vdec_racing_info: record register value
> > * @dec_racing_info_mutex: mutex lock used for inner racing mode
> > * @dbgfs: debug log related information
> > + *
> > + * @chip_name: the chip name used to separate different platform
>
> I wouldn't repeat chip name in the description and specify more
> concretely why we need to separate the platforms.
>
> My suggestion:
>
> * @chip_name: used to distinguish platforms and select the correct
> codec configuration values.
>
> > */
> > struct mtk_vcodec_dec_dev {
> > struct v4l2_device v4l2_dev;
> > @@ -289,6 +304,8 @@ struct mtk_vcodec_dec_dev {
> > /* Protects access to vdec_racing_info data */
> > struct mutex dec_racing_info_mutex;
> > struct mtk_vcodec_dbgfs dbgfs;
> > +
> > + enum mtk_vcodec_dec_chip_name chip_name;
> > };
> >
> > static inline struct mtk_vcodec_dec_ctx *fh_to_dec_ctx(struct
> > v4l2_fh *fh)
>
> Besides those small wording choices, the patch looks good.
>
> So with these issues resolved:
>
> Reviewed-by: Sebastian Fricke <sebastian.fricke@...labora.com>
>
> Regards,
> Sebastian
> > --
> > 2.18.0
> >
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