[PATCH v6 12/16] drm/mediatek: add display merge api support for MT8195
Chun-Kuang Hu
chunkuang.hu at kernel.org
Thu Oct 21 08:02:44 PDT 2021
Hi, Nancy:
Nancy.Lin <nancy.lin at mediatek.com> 於 2021年10月4日 週一 下午2:21寫道：
>
> Add merge new API.
> 1. Vdosys1 merge1~merge4 support HW mute function, so add unmute API.
> 2. Add merge new advance config API. The original merge API is
> mtk_ddp_comp_funcs function prototype. The API interface parameters
> cannot be modified, so add a new config API for extension.
> 3. Add merge enable/disable API for cmdq support. The ovl_adaptor merges
> are configured with each drm plane update. Need to enable/disable
> merge with cmdq making sure all the settings taken effect in the
> same vblank.
Separate this patch into three patches.
>
> Signed-off-by: Nancy.Lin <nancy.lin at mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_disp_drv.h | 6 ++
> drivers/gpu/drm/mediatek/mtk_disp_merge.c | 86 ++++++++++++++++++++---
> 2 files changed, 82 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> index b3a372cab0bd..2446ad0a4977 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> @@ -63,6 +63,12 @@ void mtk_merge_config(struct device *dev, unsigned int width,
> unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
> void mtk_merge_start(struct device *dev);
> void mtk_merge_stop(struct device *dev);
> +void mtk_merge_advance_config(struct device *dev, unsigned int l_w, unsigned int r_w,
> + unsigned int h, unsigned int vrefresh, unsigned int bpc,
> + struct cmdq_pkt *cmdq_pkt);
> +void mtk_merge_unmute(struct device *dev, struct cmdq_pkt *cmdq_pkt);
> +void mtk_merge_enable(struct device *dev, struct cmdq_pkt *cmdq_pkt);
> +void mtk_merge_disable(struct device *dev, struct cmdq_pkt *cmdq_pkt);
>
> void mtk_ovl_bgclr_in_on(struct device *dev);
> void mtk_ovl_bgclr_in_off(struct device *dev);
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
> index b05e1df79c3d..696bb948352b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
> @@ -17,6 +17,7 @@
> #define DISP_REG_MERGE_CTRL 0x000
> #define MERGE_EN 1
> #define DISP_REG_MERGE_CFG_0 0x010
> +#define DISP_REG_MERGE_CFG_1 0x014
> #define DISP_REG_MERGE_CFG_4 0x020
> #define DISP_REG_MERGE_CFG_10 0x038
> /* no swap */
> @@ -25,9 +26,12 @@
> #define DISP_REG_MERGE_CFG_12 0x040
> #define CFG_10_10_1PI_2PO_BUF_MODE 6
> #define CFG_10_10_2PI_2PO_BUF_MODE 8
> +#define CFG_11_10_1PI_2PO_MERGE 18
> #define FLD_CFG_MERGE_MODE GENMASK(4, 0)
> #define DISP_REG_MERGE_CFG_24 0x070
> #define DISP_REG_MERGE_CFG_25 0x074
> +#define DISP_REG_MERGE_CFG_26 0x078
> +#define DISP_REG_MERGE_CFG_27 0x07c
> #define DISP_REG_MERGE_CFG_36 0x0a0
> #define ULTRA_EN BIT(0)
> #define PREULTRA_EN BIT(4)
> @@ -54,26 +58,52 @@
> #define FLD_PREULTRA_TH_LOW GENMASK(15, 0)
> #define FLD_PREULTRA_TH_HIGH GENMASK(31, 16)
>
> +#define DISP_REG_MERGE_MUTE_0 0xf00
> +
> struct mtk_disp_merge {
> void __iomem *regs;
> struct clk *clk;
> struct clk *async_clk;
> struct cmdq_client_reg cmdq_reg;
> bool fifo_en;
> + bool mute_support;
Align indent of members.
> };
>
> void mtk_merge_start(struct device *dev)
> +{
> + mtk_merge_enable(dev, NULL);
> +}
> +
> +void mtk_merge_stop(struct device *dev)
> {
> struct mtk_disp_merge *priv = dev_get_drvdata(dev);
>
> - writel(MERGE_EN, priv->regs + DISP_REG_MERGE_CTRL);
> + mtk_merge_disable(dev, NULL);
> }
>
> -void mtk_merge_stop(struct device *dev)
> +void mtk_merge_enable(struct device *dev, struct cmdq_pkt *cmdq_pkt)
The difference of mtk_merge_enable() and mtk_merge_start() is cmdq
support, but the naming make them so different. So I would like this
function name to be mtk_merge_start_cmdq().
> +{
> + struct mtk_disp_merge *priv = dev_get_drvdata(dev);
> +
> + mtk_ddp_write(cmdq_pkt, 1, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_CTRL);
> +}
> +
> +void mtk_merge_disable(struct device *dev, struct cmdq_pkt *cmdq_pkt)
Ditto.
> {
> struct mtk_disp_merge *priv = dev_get_drvdata(dev);
>
> - writel(0x0, priv->regs + DISP_REG_MERGE_CTRL);
> + mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_CTRL);
> +}
> +
> +void mtk_merge_unmute(struct device *dev, struct cmdq_pkt *cmdq_pkt)
I'm not sure whether it's worth to have this function. It seems that
mtk_merge_enable() imply mtk_merge_unmute(). So I would like to move
this function into mtk_merge_enable().
And I would like to mute in mtk_merge_disable() to let register be restored.
Regards,
Chun-Kuang.
> +{
> + struct mtk_disp_merge *priv = dev_get_drvdata(dev);
> +
> + if (priv->mute_support)
> + mtk_ddp_write(cmdq_pkt, 0x0, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_MUTE_0);
> }
>
> static void mtk_merge_fifo_setting(struct mtk_disp_merge *priv,
> @@ -98,12 +128,19 @@ static void mtk_merge_fifo_setting(struct mtk_disp_merge *priv,
> void mtk_merge_config(struct device *dev, unsigned int w,
> unsigned int h, unsigned int vrefresh,
> unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
> +{
> + mtk_merge_advance_config(dev, w, 0, h, vrefresh, bpc, cmdq_pkt);
> +}
> +
> +void mtk_merge_advance_config(struct device *dev, unsigned int l_w, unsigned int r_w,
> + unsigned int h, unsigned int vrefresh, unsigned int bpc,
> + struct cmdq_pkt *cmdq_pkt)
> {
> struct mtk_disp_merge *priv = dev_get_drvdata(dev);
> unsigned int mode = CFG_10_10_1PI_2PO_BUF_MODE;
>
> - if (!h || !w) {
> - dev_err(dev, "%s: input width(%d) or height(%d) is invalid\n", __func__, w, h);
> + if (!h || !l_w) {
> + dev_err(dev, "%s: input width(%d) or height(%d) is invalid\n", __func__, l_w, h);
> return;
> }
>
> @@ -112,14 +149,41 @@ void mtk_merge_config(struct device *dev, unsigned int w,
> mode = CFG_10_10_2PI_2PO_BUF_MODE;
> }
>
> - mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs,
> + if (r_w)
> + mode = CFG_11_10_1PI_2PO_MERGE;
> +
> + mtk_ddp_write(cmdq_pkt, h << 16 | l_w, &priv->cmdq_reg, priv->regs,
> DISP_REG_MERGE_CFG_0);
> - mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs,
> + mtk_ddp_write(cmdq_pkt, h << 16 | r_w, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_CFG_1);
> + mtk_ddp_write(cmdq_pkt, h << 16 | (l_w + r_w), &priv->cmdq_reg, priv->regs,
> DISP_REG_MERGE_CFG_4);
> - mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs,
> + /*
> + * DISP_REG_MERGE_CFG_24 is merge SRAM0 w/h
> + * DISP_REG_MERGE_CFG_25 is merge SRAM1 w/h.
> + * If r_w > 0, the merge is in merge mode (input0 and input1 merge together),
> + * the input0 goes to SRAM0, and input1 goes to SRAM1.
> + * If r_w = 0, the merge is in buffer mode, the input goes through SRAM0 and
> + * then to SRAM1. Both SRAM0 and SRAM1 are set to the same size.
> + */
> + mtk_ddp_write(cmdq_pkt, h << 16 | l_w, &priv->cmdq_reg, priv->regs,
> DISP_REG_MERGE_CFG_24);
> - mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs,
> - DISP_REG_MERGE_CFG_25);
> + if (r_w)
> + mtk_ddp_write(cmdq_pkt, h << 16 | r_w, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_CFG_25);
> + else
> + mtk_ddp_write(cmdq_pkt, h << 16 | l_w, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_CFG_25);
> +
> + /*
> + * DISP_REG_MERGE_CFG_26 and DISP_REG_MERGE_CFG_27 is only used in LR merge.
> + * Only take effect when the merge is setting to merge mode.
> + */
> + mtk_ddp_write(cmdq_pkt, h << 16 | l_w, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_CFG_26);
> + mtk_ddp_write(cmdq_pkt, h << 16 | r_w, &priv->cmdq_reg, priv->regs,
> + DISP_REG_MERGE_CFG_27);
> +
> mtk_ddp_write_mask(cmdq_pkt, SWAP_MODE, &priv->cmdq_reg, priv->regs,
> DISP_REG_MERGE_CFG_10, FLD_SWAP_MODE);
> mtk_ddp_write_mask(cmdq_pkt, mode, &priv->cmdq_reg, priv->regs,
> @@ -205,6 +269,8 @@ static int mtk_disp_merge_probe(struct platform_device *pdev)
> priv->fifo_en = of_property_read_bool(dev->of_node,
> "mediatek,merge-fifo-en");
>
> + priv->mute_support = of_property_read_bool(dev->of_node,
> + "mediatek,merge-mute");
> platform_set_drvdata(pdev, priv);
>
> ret = component_add(dev, &mtk_disp_merge_component_ops);
> --
> 2.18.0
>
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