| Message ID | 1607746317-4696-15-git-send-email-yongqiang.niu@mediatek.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | drm/mediatek: add support for mediatek SOC MT8192 | expand |
On Tue, 2020-12-15 at 21:42 +0800, Nicolas Boichat wrote: > On Sat, Dec 12, 2020 at 12:13 PM Yongqiang Niu > <yongqiang.niu@mediatek.com> wrote: > > > > Use function call for setting mmsys ovl mout register > > > > Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> > > --- > > drivers/soc/mediatek/mmsys/mtk-mmsys.c | 18 ++++++++++++++++++ > > include/linux/soc/mediatek/mtk-mmsys.h | 3 +++ > > 2 files changed, 21 insertions(+) > > > > diff --git a/drivers/soc/mediatek/mmsys/mtk-mmsys.c b/drivers/soc/mediatek/mmsys/mtk-mmsys.c > > index cb76e64..2558b42 100644 > > --- a/drivers/soc/mediatek/mmsys/mtk-mmsys.c > > +++ b/drivers/soc/mediatek/mmsys/mtk-mmsys.c > > @@ -78,6 +78,15 @@ void mtk_mmsys_ddp_connect(struct device *dev, > > reg = readl_relaxed(mmsys->regs + addr) | value; > > writel_relaxed(reg, mmsys->regs + addr); > > } > > + > > + if (!funcs->ovl_mout_en) > > + return; > > + > > + value = funcs->ovl_mout_en(cur, next, &addr); > > + if (value) { > > + reg = readl_relaxed(mmsys->regs + addr) | value; > > + writel_relaxed(reg, mmsys->regs + addr); > > + } > > This is technically correct, but I'm afraid this may become and issue > later if we have another function like ovl_mout_en. > > So maybe it's better to do: > if (funcs->ovl_mout_en) { > value = funcs->ovl_mout_en(cur, next, &addr); > ... > } will be improved like this in next version > > Or another option: Create a new function > static unsigned int mtk_mmsys_ovl_mout_en(...) { > if (!funcs->ovl_mout_en) > return 0; > } > > and call that, following the same pattern as > mtk_mmsys_ddp_mout_en/mtk_mmsys_ddp_sel_in? > > > } > > EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect); > > > > @@ -103,6 +112,15 @@ void mtk_mmsys_ddp_disconnect(struct device *dev, > > reg = readl_relaxed(mmsys->regs + addr) & ~value; > > writel_relaxed(reg, mmsys->regs + addr); > > } > > + > > + if (!funcs->ovl_mout_en) > > + return; > > + > > + value = funcs->ovl_mout_en(cur, next, &addr); > > + if (value) { > > + reg = readl_relaxed(mmsys->regs + addr) & ~value; > > + writel_relaxed(reg, mmsys->regs + addr); > > + } > > } > > EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect); > > > > diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h > > index aa4f60e..220203d 100644 > > --- a/include/linux/soc/mediatek/mtk-mmsys.h > > +++ b/include/linux/soc/mediatek/mtk-mmsys.h > > @@ -49,6 +49,9 @@ struct mtk_mmsys_conn_funcs { > > u32 (*mout_en)(enum mtk_ddp_comp_id cur, > > enum mtk_ddp_comp_id next, > > unsigned int *addr); > > + u32 (*ovl_mout_en)(enum mtk_ddp_comp_id cur, > > + enum mtk_ddp_comp_id next, > > + unsigned int *addr); > > u32 (*sel_in)(enum mtk_ddp_comp_id cur, > > enum mtk_ddp_comp_id next, > > unsigned int *addr); > > -- > > 1.8.1.1.dirty > > _______________________________________________ > > Linux-mediatek mailing list > > Linux-mediatek@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-mediatek
diff --git a/drivers/soc/mediatek/mmsys/mtk-mmsys.c b/drivers/soc/mediatek/mmsys/mtk-mmsys.c index cb76e64..2558b42 100644 --- a/drivers/soc/mediatek/mmsys/mtk-mmsys.c +++ b/drivers/soc/mediatek/mmsys/mtk-mmsys.c @@ -78,6 +78,15 @@ void mtk_mmsys_ddp_connect(struct device *dev, reg = readl_relaxed(mmsys->regs + addr) | value; writel_relaxed(reg, mmsys->regs + addr); } + + if (!funcs->ovl_mout_en) + return; + + value = funcs->ovl_mout_en(cur, next, &addr); + if (value) { + reg = readl_relaxed(mmsys->regs + addr) | value; + writel_relaxed(reg, mmsys->regs + addr); + } } EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect); @@ -103,6 +112,15 @@ void mtk_mmsys_ddp_disconnect(struct device *dev, reg = readl_relaxed(mmsys->regs + addr) & ~value; writel_relaxed(reg, mmsys->regs + addr); } + + if (!funcs->ovl_mout_en) + return; + + value = funcs->ovl_mout_en(cur, next, &addr); + if (value) { + reg = readl_relaxed(mmsys->regs + addr) & ~value; + writel_relaxed(reg, mmsys->regs + addr); + } } EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect); diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h index aa4f60e..220203d 100644 --- a/include/linux/soc/mediatek/mtk-mmsys.h +++ b/include/linux/soc/mediatek/mtk-mmsys.h @@ -49,6 +49,9 @@ struct mtk_mmsys_conn_funcs { u32 (*mout_en)(enum mtk_ddp_comp_id cur, enum mtk_ddp_comp_id next, unsigned int *addr); + u32 (*ovl_mout_en)(enum mtk_ddp_comp_id cur, + enum mtk_ddp_comp_id next, + unsigned int *addr); u32 (*sel_in)(enum mtk_ddp_comp_id cur, enum mtk_ddp_comp_id next, unsigned int *addr);
Use function call for setting mmsys ovl mout register Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> --- drivers/soc/mediatek/mmsys/mtk-mmsys.c | 18 ++++++++++++++++++ include/linux/soc/mediatek/mtk-mmsys.h | 3 +++ 2 files changed, 21 insertions(+)