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drm/mediatek: Add fifo_size into rdma private data

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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>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Yongqiang Niu 2021-01-07 11:11:15 +08:00 committed by Chun-Kuang Hu
parent 71dcadba34
commit 4d2598223d
1 changed files with 18 additions and 1 deletions
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19
drivers/gpu/drm/mediatek/mtk_disp_rdma.c
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@ -68,6 +68,7 @@ struct mtk_disp_rdma {
const struct mtk_disp_rdma_data *data;
void (*vblank_cb)(void *data);
void *vblank_cb_data;
u32 fifo_size;
};
static irqreturn_t mtk_disp_rdma_irq_handler(int irq, void *dev_id)
@ -148,12 +149,18 @@ void mtk_rdma_config(struct device *dev, unsigned int width,
unsigned int threshold;
unsigned int reg;
struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);
u32 rdma_fifo_size;
mtk_ddp_write_mask(cmdq_pkt, width, &rdma->cmdq_reg, rdma->regs,
DISP_REG_RDMA_SIZE_CON_0, 0xfff);
mtk_ddp_write_mask(cmdq_pkt, height, &rdma->cmdq_reg, rdma->regs,
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
@ -162,7 +169,7 @@ void mtk_rdma_config(struct device *dev, 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, &rdma->cmdq_reg, rdma->regs, DISP_REG_RDMA_FIFO_CON);
}
@ -297,6 +304,16 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
#endif
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;
}
}
/* Disable and clear pending interrupts */
writel(0x0, priv->regs + DISP_REG_RDMA_INT_ENABLE);
writel(0x0, priv->regs + DISP_REG_RDMA_INT_STATUS);