From: CK Hu <ck.hu@mediatek.com>
To: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Devicetree List <devicetree@vger.kernel.org>,
Yongqiang Niu <yongqiang.niu@mediatek.com>,
David Airlie <airlied@linux.ie>,
lkml <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
Project_Global_Chrome_Upstream_Group@mediatek.com,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@lists.infradead.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v10 4/9] drm/mediatek: generalize mtk_dither_set() function
Date: Thu, 28 Jan 2021 13:21:50 +0800 [thread overview]
Message-ID: <1611811310.25395.4.camel@mtksdaap41> (raw)
In-Reply-To: <CAJMQK-jeBBsxZ1RnFJfT5ouNJsBwEkLbZ_+6T+VUFZ_xDQ7rpQ@mail.gmail.com>
On Thu, 2021-01-28 at 13:09 +0800, Hsin-Yi Wang wrote:
> On Thu, Jan 28, 2021 at 12:39 PM CK Hu <ck.hu@mediatek.com> wrote:
> >
> > Hi, Hsin-Yi:
> >
> > On Wed, 2021-01-27 at 12:54 +0800, Hsin-Yi Wang wrote:
> > > There may be data structure other than mtk_ddp_comp_dev that would call
> > > mtk_dither_set(), so use regs as parameter instead of device.
> >
> > You does not change the interface of mtk_dither_set(). You move the
> > common part in mtk_dither_set() to a new function which could be called
> > by another caller.
> >
> > Regards,
> > CK.
> >
> Current mtk_dither_set() cast dev data to struct mtk_ddp_comp_dev. But
> mtk_disp_gamma in next patch would also call this function. But it's
> dev data is struct mtk_disp_gamma, which is different, so we can't
> cast to mtk_ddp_comp_dev. I separate the necessary parameters (regs,
> cmdq_reg) out, so both component dither and gamma can both call this
> separated function.
I know this. This patch looks good to me but the description would
confuse me.From the description, it seems that you modify the interface
of mtk_dither_set(). So please modify the description to be more clear.
Regards,
CK
>
> This is similar to the mtk_gamma_set_common() in the next patch, which
> gamma and aal both used.
>
> > >
> > > Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
> > > ---
> > > drivers/gpu/drm/mediatek/mtk_disp_drv.h | 4 ++++
> > > drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 25 +++++++++++++--------
> > > 2 files changed, 20 insertions(+), 9 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > > index 46d199b7b4a29..c50d5fc9fd349 100644
> > > --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > > +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > > @@ -17,6 +17,10 @@ void mtk_color_config(struct device *dev, unsigned int w,
> > > unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
> > > void mtk_color_start(struct device *dev);
> > >
> > > +void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
> > > + unsigned int bpc, unsigned int CFG,
> > > + struct cmdq_pkt *cmdq_pkt);
> > > +
> > > void mtk_dpi_start(struct device *dev);
> > > void mtk_dpi_stop(struct device *dev);
> > >
> > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > > index 7b5293429426d..53d25823a37cc 100644
> > > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > > @@ -151,33 +151,40 @@ static void mtk_ddp_clk_disable(struct device *dev)
> > > clk_disable_unprepare(priv->clk);
> > > }
> > >
> > > -static void mtk_dither_set(struct device *dev, unsigned int bpc,
> > > - unsigned int CFG, struct cmdq_pkt *cmdq_pkt)
> > > -{
> > > - struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> > >
> > > +void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
> > > + unsigned int bpc, unsigned int CFG, struct cmdq_pkt *cmdq_pkt)
> > > +{
> > > /* If bpc equal to 0, the dithering function didn't be enabled */
> > > if (bpc == 0)
> > > return;
> > >
> > > if (bpc >= MTK_MIN_BPC) {
> > > - mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_DITHER_5);
> > > - mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_DITHER_7);
> > > + mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_5);
> > > + mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_7);
> > > mtk_ddp_write(cmdq_pkt,
> > > DITHER_LSB_ERR_SHIFT_R(MTK_MAX_BPC - bpc) |
> > > DITHER_ADD_LSHIFT_R(MTK_MAX_BPC - bpc) |
> > > DITHER_NEW_BIT_MODE,
> > > - &priv->cmdq_reg, priv->regs, DISP_DITHER_15);
> > > + cmdq_reg, regs, DISP_DITHER_15);
> > > mtk_ddp_write(cmdq_pkt,
> > > DITHER_LSB_ERR_SHIFT_B(MTK_MAX_BPC - bpc) |
> > > DITHER_ADD_LSHIFT_B(MTK_MAX_BPC - bpc) |
> > > DITHER_LSB_ERR_SHIFT_G(MTK_MAX_BPC - bpc) |
> > > DITHER_ADD_LSHIFT_G(MTK_MAX_BPC - bpc),
> > > - &priv->cmdq_reg, priv->regs, DISP_DITHER_16);
> > > - mtk_ddp_write(cmdq_pkt, DISP_DITHERING, &priv->cmdq_reg, priv->regs, CFG);
> > > + cmdq_reg, regs, DISP_DITHER_16);
> > > + mtk_ddp_write(cmdq_pkt, DISP_DITHERING, cmdq_reg, regs, CFG);
> > > }
> > > }
> > >
> > > +static void mtk_dither_set(struct device *dev, unsigned int bpc,
> > > + unsigned int CFG, struct cmdq_pkt *cmdq_pkt)
> > > +{
> > > + struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> > > +
> > > + mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, CFG, cmdq_pkt);
> > > +}
> > > +
> > > static void mtk_od_config(struct device *dev, unsigned int w,
> > > unsigned int h, unsigned int vrefresh,
> > > unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
> >
>
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2021-01-28 5:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 4:54 [PATCH v10 0/9] drm/mediatek: add support for mediatek SOC MT8183 Hsin-Yi Wang
2021-01-27 4:54 ` [PATCH v10 1/9] arm64: dts: mt8183: rename rdma fifo size Hsin-Yi Wang
2021-01-27 4:54 ` [PATCH v10 2/9] arm64: dts: mt8183: refine gamma compatible name Hsin-Yi Wang
2021-01-27 4:54 ` [PATCH v10 3/9] drm/mediatek: add RDMA fifo size error handle Hsin-Yi Wang
2021-01-27 7:59 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 4/9] drm/mediatek: generalize mtk_dither_set() function Hsin-Yi Wang
2021-01-28 4:39 ` CK Hu
2021-01-28 5:09 ` Hsin-Yi Wang
2021-01-28 5:21 ` CK Hu [this message]
2021-01-27 4:54 ` [PATCH v10 5/9] drm/mediatek: separate gamma module Hsin-Yi Wang
2021-01-28 5:33 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 6/9] drm/mediatek: add has_dither private data for gamma Hsin-Yi Wang
2021-01-28 5:34 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 7/9] drm/mediatek: enable dither function Hsin-Yi Wang
2021-01-28 6:01 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 8/9] drm/mediatek: add DDP support for MT8183 Hsin-Yi Wang
2021-01-28 6:13 ` CK Hu
2021-01-28 6:15 ` Hsin-Yi Wang
2021-01-28 7:00 ` CK Hu
2021-01-28 6:19 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 9/9] drm/mediatek: add support for mediatek SOC MT8183 Hsin-Yi Wang
2021-01-28 6:17 ` CK Hu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1611811310.25395.4.camel@mtksdaap41 \
--to=ck.hu@mediatek.com \
--cc=Project_Global_Chrome_Upstream_Group@mediatek.com \
--cc=airlied@linux.ie \
--cc=devicetree@vger.kernel.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=hsinyi@chromium.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=mark.rutland@arm.com \
--cc=matthias.bgg@gmail.com \
--cc=yongqiang.niu@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).