linux-kernel - Re: [PATCH v8 08/19] drm/mediatek: dpi: move dimension mask to board config

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Date:   Mon, 21 Feb 2022 10:42:01 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>
Cc:     Guillaume Ranquet <granquet@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>, deller@....de,
        CK Hu <ck.hu@...iatek.com>, Jitao Shi <jitao.shi@...iatek.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        DTML <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-phy@...ts.infradead.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v8 08/19] drm/mediatek: dpi: move dimension mask to board config

Hi, Guillaume:

Chun-Kuang Hu <chunkuang.hu@...nel.org> 於 2022年2月21日 週一 上午10:40寫道：
>
> HI, Guillaume:
>
> Guillaume Ranquet <granquet@...libre.com> 於 2022年2月18日 週五 下午10:56寫道：
> >
> > Add flexibility by moving the dimension mask to the board config
>
> After change 'board' to 'SoC',
>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
>
> >
> > Signed-off-by: Guillaume Ranquet <granquet@...libre.com>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_dpi.c | 26 ++++++++++++++++----------
> >  1 file changed, 16 insertions(+), 10 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > index 454f8563efae4..8ca3455ed64ee 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > @@ -127,6 +127,8 @@ struct mtk_dpi_conf {
> >         u32 num_output_fmts;
> >         bool is_ck_de_pol;
> >         bool swap_input_support;
> > +       // Mask used for HWIDTH, HPORCH, VSYNC_WIDTH and VSYNC_PORCH (no shift)

Sorry, this should be /* ... */

Regards,
Chun-Kuang.

> > +       u32 dimension_mask;
> >         const struct mtk_dpi_yc_limit *limit;
> >  };
> >
> > @@ -156,30 +158,30 @@ static void mtk_dpi_disable(struct mtk_dpi *dpi)
> >  static void mtk_dpi_config_hsync(struct mtk_dpi *dpi,
> >                                  struct mtk_dpi_sync_param *sync)
> >  {
> > -       mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH,
> > -                    sync->sync_width << HPW, HPW_MASK);
> > -       mtk_dpi_mask(dpi, DPI_TGEN_HPORCH,
> > -                    sync->back_porch << HBP, HBP_MASK);
> > +       mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH, sync->sync_width << HPW,
> > +                    dpi->conf->dimension_mask << HPW);
> > +       mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->back_porch << HBP,
> > +                    dpi->conf->dimension_mask << HBP);
> >         mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,
> > -                    HFP_MASK);
> > +                    dpi->conf->dimension_mask << HFP);
> >  }
> >
> >  static void mtk_dpi_config_vsync(struct mtk_dpi *dpi,
> >                                  struct mtk_dpi_sync_param *sync,
> >                                  u32 width_addr, u32 porch_addr)
> >  {
> > -       mtk_dpi_mask(dpi, width_addr,
> > -                    sync->sync_width << VSYNC_WIDTH_SHIFT,
> > -                    VSYNC_WIDTH_MASK);
> >         mtk_dpi_mask(dpi, width_addr,
> >                      sync->shift_half_line << VSYNC_HALF_LINE_SHIFT,
> >                      VSYNC_HALF_LINE_MASK);
> > +       mtk_dpi_mask(dpi, width_addr,
> > +                    sync->sync_width << VSYNC_WIDTH_SHIFT,
> > +                    dpi->conf->dimension_mask << VSYNC_WIDTH_SHIFT);
> >         mtk_dpi_mask(dpi, porch_addr,
> >                      sync->back_porch << VSYNC_BACK_PORCH_SHIFT,
> > -                    VSYNC_BACK_PORCH_MASK);
> > +                    dpi->conf->dimension_mask << VSYNC_BACK_PORCH_SHIFT);
> >         mtk_dpi_mask(dpi, porch_addr,
> >                      sync->front_porch << VSYNC_FRONT_PORCH_SHIFT,
> > -                    VSYNC_FRONT_PORCH_MASK);
> > +                    dpi->conf->dimension_mask << VSYNC_FRONT_PORCH_SHIFT);
> >  }
> >
> >  static void mtk_dpi_config_vsync_lodd(struct mtk_dpi *dpi,
> > @@ -813,6 +815,7 @@ static const struct mtk_dpi_conf mt8173_conf = {
> >         .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> >         .is_ck_de_pol = true,
> >         .swap_input_support = true,
> > +       .dimension_mask = HPW_MASK,
> >         .limit = &mtk_dpi_limit,
> >  };
> >
> > @@ -825,6 +828,7 @@ static const struct mtk_dpi_conf mt2701_conf = {
> >         .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> >         .is_ck_de_pol = true,
> >         .swap_input_support = true,
> > +       .dimension_mask = HPW_MASK,
> >         .limit = &mtk_dpi_limit,
> >  };
> >
> > @@ -836,6 +840,7 @@ static const struct mtk_dpi_conf mt8183_conf = {
> >         .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
> >         .is_ck_de_pol = true,
> >         .swap_input_support = true,
> > +       .dimension_mask = HPW_MASK,
> >         .limit = &mtk_dpi_limit,
> >  };
> >
> > @@ -847,6 +852,7 @@ static const struct mtk_dpi_conf mt8192_conf = {
> >         .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> >         .is_ck_de_pol = true,
> >         .swap_input_support = true,
> > +       .dimension_mask = HPW_MASK,
> >         .limit = &mtk_dpi_limit,
> >  };
> >
> > --
> > 2.34.1
> >