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References: <20220128120718.30545-1-yongqiang.niu@mediatek.com> <20220128120718.30545-4-yongqiang.niu@mediatek.com>
In-Reply-To: <20220128120718.30545-4-yongqiang.niu@mediatek.com>
From:   Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date:   Sat, 29 Jan 2022 00:34:18 +0800
Message-ID: <CAAOTY_-c8CoPpT=4E9iR0fDiWfg9my=B7Oz1r4Vro80uHaGszg@mail.gmail.com>
Subject: Re: [PATCH v1, 3/4] drm/mediatek: split postmask component
To:     Yongqiang Niu <yongqiang.niu@mediatek.com>
Cc:     Chun-Kuang Hu <chunkuang.hu@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Jassi Brar <jassisinghbrar@gmail.com>,
        Fabien Parent <fparent@baylibre.com>,
        Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>,
        DTML <devicetree@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        DRI Development <dri-devel@lists.freedesktop.org>,
        Project_Global_Chrome_Upstream_Group@mediatek.com,
        Hsin-Yi Wang <hsinyi@chromium.org>
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Hi, Yongqiang:

Yongqiang Niu <yongqiang.niu@mediatek.com> =E6=96=BC 2022=E5=B9=B41=E6=9C=
=8828=E6=97=A5 =E9=80=B1=E4=BA=94 =E4=B8=8B=E5=8D=888:07=E5=AF=AB=E9=81=93=
=EF=BC=9A
>
> add postmask private data for differnt soc support
>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/Makefile            |   1 +
>  drivers/gpu/drm/mediatek/mtk_disp_drv.h      |   8 +
>  drivers/gpu/drm/mediatek/mtk_disp_postmask.c | 155 +++++++++++++++++++
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c  |  30 +---
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c       |   2 +
>  drivers/gpu/drm/mediatek/mtk_drm_drv.h       |   1 +
>  6 files changed, 170 insertions(+), 27 deletions(-)
>  create mode 100644 drivers/gpu/drm/mediatek/mtk_disp_postmask.c
>
> diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek=
/Makefile
> index 29098d7c8307..f26fe646ee2a 100644
> --- a/drivers/gpu/drm/mediatek/Makefile
> +++ b/drivers/gpu/drm/mediatek/Makefile
> @@ -5,6 +5,7 @@ mediatek-drm-y :=3D mtk_disp_aal.o \
>                   mtk_disp_color.o \
>                   mtk_disp_gamma.o \
>                   mtk_disp_ovl.o \
> +                 mtk_disp_postmask.o \
>                   mtk_disp_rdma.o \
>                   mtk_drm_crtc.o \
>                   mtk_drm_ddp_comp.o \
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/me=
diatek/mtk_disp_drv.h
> index 86c3068894b1..f4c21195c3ea 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> @@ -81,6 +81,14 @@ void mtk_ovl_enable_vblank(struct device *dev,
>                            void *vblank_cb_data);
>  void mtk_ovl_disable_vblank(struct device *dev);
>
> +int mtk_postmask_clk_enable(struct device *dev);
> +void mtk_postmask_clk_disable(struct device *dev);
> +void mtk_postmask_config(struct device *dev, unsigned int w,
> +                               unsigned int h, unsigned int vrefresh,
> +                               unsigned int bpc, struct cmdq_pkt *cmdq_p=
kt);
> +void mtk_postmask_start(struct device *dev);
> +void mtk_postmask_stop(struct device *dev);
> +
>  void mtk_rdma_bypass_shadow(struct device *dev);
>  int mtk_rdma_clk_enable(struct device *dev);
>  void mtk_rdma_clk_disable(struct device *dev);
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_postmask.c b/drivers/gpu/d=
rm/mediatek/mtk_disp_postmask.c
> new file mode 100644
> index 000000000000..fc04b445c2ed
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_postmask.c
> @@ -0,0 +1,155 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2021 MediaTek Inc.

2022

> + */
> +
> +#include <linux/clk.h>
> +#include <linux/component.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/of_irq.h>
> +#include <linux/platform_device.h>
> +#include <linux/soc/mediatek/mtk-cmdq.h>
> +
> +#include "mtk_disp_drv.h"
> +#include "mtk_drm_crtc.h"
> +#include "mtk_drm_ddp_comp.h"
> +
> +#define DISP_POSTMASK_EN                       0x0000
> +#define POSTMASK_EN                                    BIT(0)
> +#define DISP_POSTMASK_CFG                      0x0020
> +#define POSTMASK_RELAY_MODE                            BIT(0)
> +#define DISP_POSTMASK_SIZE                     0x0030

I think you should 'move' these definition not 'copy' them, so
remember to remove them in mtk_drm_ddp_comp.c

Regards,
Chun-Kuang.

> +
> +struct mtk_disp_postmask_data {
> +       u32 reserved;
> +};
> +
> +/*
> + * struct mtk_disp_postmask - DISP_POSTMASK driver structure
> + */
> +struct mtk_disp_postmask {
> +       struct clk *clk;
> +       void __iomem *regs;
> +       struct cmdq_client_reg cmdq_reg;
> +       const struct mtk_disp_postmask_data *data;
> +};
> +