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SubjectRe: [PATCH v9, 05/11] drm/mediatek: add fifo_size into rdma private data
Hi, Yongqiang:

Chun-Kuang Hu <chunkuang.hu@kernel.org> 於 2021年1月7日 週四 下午6:05寫道:
>
> Hi, Yongqiang:
>
> Yongqiang Niu <yongqiang.niu@mediatek.com> 於 2021年1月7日 週四 上午11:12寫道:
> >
> > Get the fifo size from device tree
> > because each rdma in the same SoC may have different fifo size
>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Applied to mediatek-drm-next [1], thanks.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next

Regards,
Chun-Kuang.

>
> >
> > Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
> > ---
> > drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 19 ++++++++++++++++++-
> > 1 file changed, 18 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> > index d46b8ae..8c64d5c 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> > @@ -64,6 +64,7 @@ struct mtk_disp_rdma {
> > struct mtk_ddp_comp ddp_comp;
> > struct drm_crtc *crtc;
> > const struct mtk_disp_rdma_data *data;
> > + u32 fifo_size;
> > };
> >
> > static inline struct mtk_disp_rdma *comp_to_rdma(struct mtk_ddp_comp *comp)
> > @@ -132,12 +133,18 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width,
> > unsigned int threshold;
> > unsigned int reg;
> > struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
> > + u32 rdma_fifo_size;
> >
> > mtk_ddp_write_mask(cmdq_pkt, width, comp,
> > DISP_REG_RDMA_SIZE_CON_0, 0xfff);
> > mtk_ddp_write_mask(cmdq_pkt, height, comp,
> > DISP_REG_RDMA_SIZE_CON_1, 0xfffff);
> >
> > + if (rdma->fifo_size)
> > + rdma_fifo_size = rdma->fifo_size;
> > + else
> > + rdma_fifo_size = RDMA_FIFO_SIZE(rdma);
> > +
> > /*
> > * Enable FIFO underflow since DSI and DPI can't be blocked.
> > * Keep the FIFO pseudo size reset default of 8 KiB. Set the
> > @@ -146,7 +153,7 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width,
> > */
> > threshold = width * height * vrefresh * 4 * 7 / 1000000;
> > reg = RDMA_FIFO_UNDERFLOW_EN |
> > - RDMA_FIFO_PSEUDO_SIZE(RDMA_FIFO_SIZE(rdma)) |
> > + RDMA_FIFO_PSEUDO_SIZE(rdma_fifo_size) |
> > RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold);
> > mtk_ddp_write(cmdq_pkt, reg, comp, DISP_REG_RDMA_FIFO_CON);
> > }
> > @@ -292,6 +299,16 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
> > return comp_id;
> > }
> >
> > + if (of_find_property(dev->of_node, "mediatek,rdma-fifo-size", &ret)) {
> > + ret = of_property_read_u32(dev->of_node,
> > + "mediatek,rdma-fifo-size",
> > + &priv->fifo_size);
> > + if (ret) {
> > + dev_err(dev, "Failed to get rdma fifo size\n");
> > + return ret;
> > + }
> > + }
> > +
> > ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
> > &mtk_disp_rdma_funcs);
> > if (ret) {
> > --
> > 1.8.1.1.dirty
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek

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