Re: [PATCH v4, 10/10] soc: mediatek: mmsys: add mt8192 mmsys support

From: Chun-Kuang Hu
Date: Wed Jan 06 2021 - 11:37:49 EST

Hi, Yongqiang:

Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> 於 2021年1月5日 週二 上午11:17寫道：
>
> add mt8192 mmsys support
>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> ---
> drivers/soc/mediatek/mmsys/Makefile | 1 +
> drivers/soc/mediatek/mmsys/mt8192-mmsys.c | 149 ++++++++++++++++++++++++++++++
> drivers/soc/mediatek/mmsys/mtk-mmsys.c | 9 ++
> include/linux/soc/mediatek/mtk-mmsys.h | 1 +
> 4 files changed, 160 insertions(+)
> create mode 100644 drivers/soc/mediatek/mmsys/mt8192-mmsys.c
>
> diff --git a/drivers/soc/mediatek/mmsys/Makefile b/drivers/soc/mediatek/mmsys/Makefile
> index 25eeb9e5..7508cd3 100644
> --- a/drivers/soc/mediatek/mmsys/Makefile
> +++ b/drivers/soc/mediatek/mmsys/Makefile
> @@ -1,4 +1,5 @@
> # SPDX-License-Identifier: GPL-2.0-only
> obj-$(CONFIG_MTK_MMSYS) += mt2701-mmsys.o
> obj-$(CONFIG_MTK_MMSYS) += mt8183-mmsys.o
> +obj-$(CONFIG_MTK_MMSYS) += mt8192-mmsys.o
> obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o
> diff --git a/drivers/soc/mediatek/mmsys/mt8192-mmsys.c b/drivers/soc/mediatek/mmsys/mt8192-mmsys.c
> new file mode 100644
> index 0000000..2e350d1
> --- /dev/null
> +++ b/drivers/soc/mediatek/mmsys/mt8192-mmsys.c
> @@ -0,0 +1,149 @@
> +// SPDX-License-Identifier: GPL-2.0
> +//
> +// Copyright (c) 2020 MediaTek Inc.
> +
> +#include <linux/device.h>
> +#include <linux/io.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/soc/mediatek/mtk-mmsys.h>
> +
> +#define MMSYS_OVL_MOUT_EN 0xf04
> +#define DISP_OVL0_GO_BLEND BIT(0)
> +#define DISP_OVL0_GO_BG BIT(1)
> +#define DISP_OVL0_2L_GO_BLEND BIT(2)
> +#define DISP_OVL0_2L_GO_BG BIT(3)
> +#define DISP_OVL1_2L_MOUT_EN 0xf08
> +#define OVL1_2L_MOUT_EN_RDMA1 BIT(4)
> +#define DISP_OVL0_2L_MOUT_EN 0xf18
> +#define DISP_OVL0_MOUT_EN 0xf1c
> +#define OVL0_MOUT_EN_DISP_RDMA0 BIT(0)
> +#define OVL0_MOUT_EN_OVL0_2L BIT(4)
> +#define DISP_RDMA0_SEL_IN 0xf2c
> +#define RDMA0_SEL_IN_OVL0_2L 0x3
> +#define DISP_RDMA0_SOUT_SEL 0xf30
> +#define RDMA0_SOUT_COLOR0 0x1
> +#define DISP_CCORR0_SOUT_SEL 0xf34
> +#define CCORR0_SOUT_AAL0 0x1
> +#define DISP_AAL0_SEL_IN 0xf38
> +#define AAL0_SEL_IN_CCORR0 0x1
> +#define DISP_DITHER0_MOUT_EN 0xf3c
> +#define DITHER0_MOUT_DSI0 BIT(0)
> +#define DISP_DSI0_SEL_IN 0xf40
> +#define DSI0_SEL_IN_DITHER0 0x1
> +#define DISP_OVL2_2L_MOUT_EN 0xf4c
> +#define OVL2_2L_MOUT_RDMA4 BIT(0)
> +
> +static void mtk_mmsys_ddp_mout_en(void __iomem *config_regs,
> + enum mtk_ddp_comp_id cur,
> + enum mtk_ddp_comp_id next,
> + bool enable)
> +{
> + unsigned int addr, value, reg;
> +
> + if (cur == DDP_COMPONENT_OVL_2L0 && next == DDP_COMPONENT_RDMA0) {
> + addr = DISP_OVL0_2L_MOUT_EN;
> + value = OVL0_MOUT_EN_DISP_RDMA0;
> + } else if (cur == DDP_COMPONENT_OVL_2L2 && next == DDP_COMPONENT_RDMA4) {
> + addr = DISP_OVL2_2L_MOUT_EN;
> + value = OVL2_2L_MOUT_RDMA4;
> + } else if (cur == DDP_COMPONENT_DITHER && next == DDP_COMPONENT_DSI0) {
> + addr = DISP_DITHER0_MOUT_EN;
> + value = DITHER0_MOUT_DSI0;
> + } else {
> + value = 0;
> + }
> +
> + if (value) {
> + reg = readl_relaxed(config_regs + addr);
> +
> + if (enable)
> + reg |= value;
> + else
> + reg &= ~value;
> +
> + writel_relaxed(reg, config_regs + addr);
> + }
> +}
> +
> +static void mtk_mmsys_ddp_sel_in(void __iomem *config_regs,
> + enum mtk_ddp_comp_id cur,
> + enum mtk_ddp_comp_id next,
> + bool enable)
> +{
> + unsigned int addr, value, reg;
> +
> + if (cur == DDP_COMPONENT_OVL_2L0 && next == DDP_COMPONENT_RDMA0) {
> + addr = DISP_RDMA0_SEL_IN;
> + value = RDMA0_SEL_IN_OVL0_2L;
> + } else if (cur == DDP_COMPONENT_CCORR && next == DDP_COMPONENT_AAL0) {
> + addr = DISP_AAL0_SEL_IN;
> + value = AAL0_SEL_IN_CCORR0;
> + } else if (cur == DDP_COMPONENT_DITHER && next == DDP_COMPONENT_DSI0) {
> + addr = DISP_DSI0_SEL_IN;
> + value = DSI0_SEL_IN_DITHER0;
> + } else {
> + value = 0;
> + }
> +
> + if (value) {
> + reg = readl_relaxed(config_regs + addr);
> +
> + if (enable)
> + reg |= value;
> + else
> + reg &= ~value;
> +
> + writel_relaxed(reg, config_regs + addr);
> + }
> +}
> +
> +static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
> + enum mtk_ddp_comp_id cur,
> + enum mtk_ddp_comp_id next)
> +{
> + if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_COLOR0) {
> + writel_relaxed(RDMA0_SOUT_COLOR0, config_regs + DISP_RDMA0_SOUT_SEL);
> + } else if (cur == DDP_COMPONENT_CCORR && next == DDP_COMPONENT_AAL0) {
> + writel_relaxed(CCORR0_SOUT_AAL0, config_regs + DISP_CCORR0_SOUT_SEL);
> + }
> +}
> +
> +static void mtk_mmsys_ovl_mout_en(void __iomem *config_regs,
> + enum mtk_ddp_comp_id cur,
> + enum mtk_ddp_comp_id next,
> + bool enable)
> +{
> + unsigned int addr, value, reg;
> +
> + addr = MMSYS_OVL_MOUT_EN;
> +
> + if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_OVL_2L0)
> + value = DISP_OVL0_GO_BG;
> + else if (cur == DDP_COMPONENT_OVL_2L0 && next == DDP_COMPONENT_OVL0)
> + value = DISP_OVL0_2L_GO_BG;
> + else if (cur == DDP_COMPONENT_OVL0)
> + value = DISP_OVL0_GO_BLEND;
> + else if (cur == DDP_COMPONENT_OVL_2L0)
> + value = DISP_OVL0_2L_GO_BLEND;
> + else
> + value = 0;
> +
> + if (value) {
> + reg = readl_relaxed(config_regs + addr);
> +
> + if (enable)
> + reg |= value;
> + else
> + reg &= ~value;
> +
> + writel_relaxed(reg, config_regs + addr);
> + }

I think you could squash mtk_mmsys_ovl_mout_en() into
mtk_mmsys_ddp_mout_en() and directly read/write register in if-else
statement.

Regards,
Chun-Kuang.

> +}
> +
> +struct mtk_mmsys_conn_funcs mt8192_mmsys_funcs = {
> + .mout_en = mtk_mmsys_ddp_mout_en,
> + .ovl_mout_en = mtk_mmsys_ovl_mout_en,
> + .sel_in = mtk_mmsys_ddp_sel_in,
> + .sout_sel = mtk_mmsys_ddp_sout_sel,
> +};
> diff --git a/drivers/soc/mediatek/mmsys/mtk-mmsys.c b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
> index 34728ed..2c72607 100644
> --- a/drivers/soc/mediatek/mmsys/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
> @@ -50,6 +50,11 @@ struct mtk_mmsys {
> .funcs = &mt8183_mmsys_funcs,
> };
>
> +static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {
> + .clk_driver = "clk-mt8192-mm",
> + .funcs = &mt8192_mmsys_funcs,
> +};
> +
> void mtk_mmsys_ddp_connect(struct device *dev,
> enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next)
> @@ -157,6 +162,10 @@ static int mtk_mmsys_probe(struct platform_device *pdev)
> .compatible = "mediatek,mt8183-mmsys",
> .data = &mt8183_mmsys_driver_data,
> },
> + {
> + .compatible = "mediatek,mt8192-mmsys",
> + .data = &mt8192_mmsys_driver_data,
> + },
> { }
> };
>
> diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
> index 19318d2..eeec96a 100644
> --- a/include/linux/soc/mediatek/mtk-mmsys.h
> +++ b/include/linux/soc/mediatek/mtk-mmsys.h
> @@ -65,6 +65,7 @@ struct mtk_mmsys_conn_funcs {
>
> extern struct mtk_mmsys_conn_funcs mt2701_mmsys_funcs;
> extern struct mtk_mmsys_conn_funcs mt8183_mmsys_funcs;
> +extern struct mtk_mmsys_conn_funcs mt8192_mmsys_funcs;
>
> void mtk_mmsys_ddp_connect(struct device *dev,
> enum mtk_ddp_comp_id cur,
> --
> 1.8.1.1.dirty
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