Get the fifo size from device tree because each rdma in the same SoC may have different fifo size
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 e04319f..794acc5 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c @@ -63,6 +63,7 @@ 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) @@ -131,12 +132,18 @@ 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 @@ -145,7 +152,7 @@ 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); } @@ -291,6 +298,16 @@ 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) {