linux-kernel - Re: [PATCH v1 06/10] media: platform: mediatek: add isp

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Message-ID: <f8dcac951608baf5b563a0094f8e320ba7ae0243.camel@mediatek.com>
Date: Wed, 20 Nov 2024 06:03:36 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: "sumit.semwal@...aro.org" <sumit.semwal@...aro.org>,
	"christian.koenig@....com" <christian.koenig@....com>, "mchehab@...nel.org"
	<mchehab@...nel.org>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
	"robh@...nel.org" <robh@...nel.org>, "matthias.bgg@...il.com"
	<matthias.bgg@...il.com>, "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Shu-hsiang Yang (楊舒翔)
	<Shu-hsiang.Yang@...iatek.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"yunkec@...omium.org" <yunkec@...omium.org>, "linaro-mm-sig@...ts.linaro.org"
	<linaro-mm-sig@...ts.linaro.org>, "linux-media@...r.kernel.org"
	<linux-media@...r.kernel.org>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, Yaya Chang (張雅清)
	<Yaya.Chang@...iatek.com>, Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	Teddy Chen (陳乾元) <Teddy.Chen@...iatek.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "hidenorik@...omium.org"
	<hidenorik@...omium.org>, Shun-Yi Wang (王順億)
	<Shun-Yi.Wang@...iatek.com>
Subject: Re: [PATCH v1 06/10] media: platform: mediatek: add isp_7x utility

Hi, Shu-hsiang:

On Wed, 2024-11-20 at 10:21 +0800, CK Hu wrote:
> Hi, Shu-hsiang:
> 
> On Wed, 2024-10-09 at 19:15 +0800, Shu-hsiang Yang wrote:
> > Introduces utility files for the MediaTek ISP7.x camsys driver. These
> > utilities provide essential platform definitions, debugging tools, and
> > management functions to support ISP operations and SCP communication.
> > Key functionalities include:
> > 1.Hardware pipeline and register definitions for managing image
> > processing modules.
> > 2.DMA debugging utilities and buffer management functions.
> > 3.Definitions of supported image formats for proper data handling.
> > 4.IPI and SCP communication structures for module state management and
> > configuring ISP.
> > 5.Metadata parameters for configuring image processing.
> > 
> > Signed-off-by: Shu-hsiang Yang <Shu-hsiang.Yang@...iatek.com>
> > ---
> 
> [snip]
> 
> > +
> > +enum mtkcam_ipi_raw_video_id {
> 
> It's better to use 'scp' instead of 'ipi'.
> The interface is provided by scp.
> ipi just transfer data between mtkcam and scp and ipi does not care the data content.

Forget my previous comment.
I find the scp command is SCP_IPI_ISP_CMD or SCP_IPI_ISP_FRAME.
So maybe the prefix should be scp_ipi_isp so some shorter symbol like isp.

Regards,
CK

> 
> > +	MTKCAM_IPI_RAW_ID_UNKNOWN	= 0,
> 
> Ditto.
> 
> > +	MTKCAM_IPI_RAW_RAWI_2,		/* RAWI_R2 */
> 
> Ditto.
> 
> > +	MTKCAM_IPI_RAW_RAWI_3,		/* RAWI_R3 */
> 
> Ditto.
> 
> > +	MTKCAM_IPI_RAW_RAWI_5,		/* RAWI_R5 */
> 
> Ditto.
> 
> > +	MTKCAM_IPI_RAW_RAWI_6,		/* RAWI_R6 */
> > +	MTKCAM_IPI_RAW_IMGO,		/* IMGO_R1 */
> > +	MTKCAM_IPI_RAW_UFEO,		/* UFEO_R1 */
> > +	MTKCAM_IPI_RAW_RRZO,		/* RRZO_R1 */
> > +	MTKCAM_IPI_RAW_UFGO,		/* UFGO_R1 */
> > +	MTKCAM_IPI_RAW_YUVO_1,		/* YUVO_R1 */
> > +	MTKCAM_IPI_RAW_YUVO_2,		/* YUVO_R2 */
> > +	MTKCAM_IPI_RAW_YUVO_3,		/* YUVO_R3 */
> > +	MTKCAM_IPI_RAW_YUVO_4,		/* YUVO_R4 */
> > +	MTKCAM_IPI_RAW_YUVO_5,		/* YUVO_R5 */
> > +	MTKCAM_IPI_RAW_RZH1N2TO_2,	/* RZH1N2TO_R2 */
> > +	MTKCAM_IPI_RAW_DRZS4NO_1,	/* DRZS4NO_R1 */
> > +	MTKCAM_IPI_RAW_DRZS4NO_2,	/* DRZS4NO_R2 */
> > +	MTKCAM_IPI_RAW_DRZS4NO_3,	/* DRZS4NO_R3 */
> > +	MTKCAM_IPI_RAW_RZH1N2TO_3,	/* RZH1N2TO_R3 */
> > +	MTKCAM_IPI_RAW_RZH1N2TO_1,	/* RZH1N2TO_R1 */
> > +	MTKCAM_IPI_RAW_META_STATS_CFG,	/* All settings */
> > +	MTKCAM_IPI_RAW_META_STATS_0,	/* statistics */
> > +
> > +	/*
> > +	 * MTKCAM_IPI_RAW_META_STATS_1 is for AFO only, the buffer can be
> > +	 * dequeued once we got the  dma done.
> > +	 */
> > +	MTKCAM_IPI_RAW_META_STATS_1,
> > +
> > +	/* statistics may be pass to DIP */
> > +	MTKCAM_IPI_RAW_META_STATS_2,
> > +	MTKCAM_IPI_RAW_ID_MAX,
> > +};
> > +
> > +/* Supported bayer pixel order */
> > +enum mtkcam_ipi_bayer_pxl_id {
> 
> Ditto.
> 
> Regards,
> CK
> 
> > +	MTKCAM_IPI_BAYER_PXL_ID_B		= 0,
> > +	MTKCAM_IPI_BAYER_PXL_ID_GB		= 1,
> > +	MTKCAM_IPI_BAYER_PXL_ID_GR		= 2,
> > +	MTKCAM_IPI_BAYER_PXL_ID_R		= 3,
> > +	MTKCAM_IPI_BAYER_PXL_ID_UNKNOWN		= 4,
> > +};
> > +
> 
>