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@xxxxxxxxxxxx>
---
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
