Re: [PATCH v3, 11/27] drm/mediatek: add mmsys private data for ddp path config

From: CK Hu
Date: Thu Jun 13 2019 - 23:33:32 EST

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Hi, Yongqiang:

On Wed, 2019-06-05 at 19:42 +0800, yongqiang.niu@xxxxxxxxxxxx wrote:
> From: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
>
> This patch add mmsys private data for ddp path config
> all these register offset and value will be different in future SOC
> add these define into mmsys private data
> u32 ovl0_mout_en;
> u32 rdma0_sout_sel_in;
> u32 rdma0_sout_color0;
> u32 rdma1_sout_sel_in;
> u32 rdma1_sout_dpi0;
> u32 rdma1_sout_dsi0;
> u32 dpi0_sel_in;
> u32 dpi0_sel_in_rdma1;
> u32 dsi0_sel_in;
> u32 dsi0_sel_in_rdma1;
>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++
> drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 100 ++++++++++++++++++++++++--------
> drivers/gpu/drm/mediatek/mtk_drm_ddp.h | 5 ++
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 5 ++
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 4 ++
> 5 files changed, 93 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index acad088..11e3404 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -50,6 +50,7 @@ struct mtk_drm_crtc {
> bool pending_planes;
>
> void __iomem *config_regs;
> + const struct mtk_mmsys_reg_data *mmsys_reg_data;
> struct mtk_disp_mutex *mutex;
> unsigned int ddp_comp_nr;
> struct mtk_ddp_comp **ddp_comp;
> @@ -271,6 +272,7 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
> DRM_DEBUG_DRIVER("mediatek_ddp_ddp_path_setup\n");
> for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
> mtk_ddp_add_comp_to_path(mtk_crtc->config_regs,
> + mtk_crtc->mmsys_reg_data,
> mtk_crtc->ddp_comp[i]->id,
> mtk_crtc->ddp_comp[i + 1]->id);
> mtk_disp_mutex_add_comp(mtk_crtc->mutex,
> @@ -319,6 +321,7 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
> mtk_disp_mutex_disable(mtk_crtc->mutex);
> for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
> mtk_ddp_remove_comp_from_path(mtk_crtc->config_regs,
> + mtk_crtc->mmsys_reg_data,
> mtk_crtc->ddp_comp[i]->id,
> mtk_crtc->ddp_comp[i + 1]->id);
> mtk_disp_mutex_remove_comp(mtk_crtc->mutex,
> @@ -561,6 +564,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
> return -ENOMEM;
>
> mtk_crtc->config_regs = priv->config_regs;
> + mtk_crtc->mmsys_reg_data = priv->reg_data;
> mtk_crtc->ddp_comp_nr = path_len;
> mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr,
> sizeof(*mtk_crtc->ddp_comp),
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index 1bbabe6..c8ac892 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -145,6 +145,17 @@
> #define DPI_SEL_IN_BLS 0x0
> #define DSI_SEL_IN_RDMA 0x1
>
> +#define DISP_REG_OVL0_MOUT_EN(data) ((data)->ovl0_mout_en)
> +#define DISP_REG_DPI0_SEL_IN(data) ((data)->dpi0_sel_in)
> +#define DISP_REG_DPI0_SEL_IN_RDMA1(data) ((data)->dpi0_sel_in_rdma1)
> +#define DISP_REG_DSI0_SEL_IN(data) ((data)->dsi0_sel_in)
> +#define DISP_REG_DSI0_SEL_IN_RDMA1(data) ((data)->dsi0_sel_in_rdma1)
> +#define DISP_REG_RDMA0_SOUT_SEL_IN(data) ((data)->rdma0_sout_sel_in)
> +#define DISP_REG_RDMA0_SOUT_COLOR0(data) ((data)->rdma0_sout_color0)
> +#define DISP_REG_RDMA1_SOUT_SEL_IN(data) ((data)->rdma1_sout_sel_in)
> +#define DISP_REG_RDMA1_SOUT_DPI0(data) ((data)->rdma1_sout_dpi0)
> +#define DISP_REG_RDMA1_SOUT_DSI0(data) ((data)->rdma1_sout_dsi0)

I does not see any benefit to invent these macro, caller could directly
use data->xxx.

rdma0_sout_sel_in, rdma0_sout_color0, and rdma1_sout_dsi0 are not used
in this patch, so remove from this patch.

> +
> struct mtk_disp_mutex {
> int id;
> bool claimed;
> @@ -176,6 +187,19 @@ struct mtk_ddp {
> const struct mtk_ddp_data *data;
> };
>
> +struct mtk_mmsys_reg_data {
> + u32 ovl0_mout_en;
> + u32 rdma0_sout_sel_in;
> + u32 rdma0_sout_color0;
> + u32 rdma1_sout_sel_in;
> + u32 rdma1_sout_dpi0;
> + u32 rdma1_sout_dsi0;
> + u32 dpi0_sel_in;
> + u32 dpi0_sel_in_rdma1;
> + u32 dsi0_sel_in;
> + u32 dsi0_sel_in_rdma1;
> +};
> +
> static const unsigned int mt2701_mutex_mod[DDP_COMPONENT_ID_MAX] = {
> [DDP_COMPONENT_BLS] = MT2701_MUTEX_MOD_DISP_BLS,
> [DDP_COMPONENT_COLOR0] = MT2701_MUTEX_MOD_DISP_COLOR,
> @@ -254,17 +278,34 @@ struct mtk_ddp {
> .mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0,
> };
>
> -static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur,
> +const struct mtk_mmsys_reg_data mt2701_mmsys_reg_data = {
> + .ovl0_mout_en = DISP_REG_CONFIG_DISP_OVL_MOUT_EN,
> + .dsi0_sel_in = DISP_REG_CONFIG_DSI_SEL,
> + .dsi0_sel_in_rdma1 = DSI_SEL_IN_RDMA,
> +};
> +
> +const struct mtk_mmsys_reg_data mt8173_mmsys_reg_data = {
> + .ovl0_mout_en = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN,
> + .rdma1_sout_sel_in = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN,
> + .rdma1_sout_dpi0 = RDMA1_SOUT_DPI0,
> + .dpi0_sel_in = DISP_REG_CONFIG_DPI_SEL_IN,
> + .dpi0_sel_in_rdma1 = DPI0_SEL_IN_RDMA1,
> + .dsi0_sel_in = DISP_REG_CONFIG_DSIE_SEL_IN,
> + .dsi0_sel_in_rdma1 = DSI0_SEL_IN_RDMA1,
> +};
> +
> +static unsigned int mtk_ddp_mout_en(const struct mtk_mmsys_reg_data *data,
> + enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next,
> unsigned int *addr)
> {
> unsigned int value;
>
> if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
> - *addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN;
> + *addr = DISP_REG_OVL0_MOUT_EN(data);
> value = OVL0_MOUT_EN_COLOR0;
> } else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) {
> - *addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN;
> + *addr = DISP_REG_OVL0_MOUT_EN(data);
> value = OVL_MOUT_EN_RDMA;
> } else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) {
> *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
> @@ -306,8 +347,8 @@ static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur,
> *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
> value = RDMA1_SOUT_DSI3;
> } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
> - *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
> - value = RDMA1_SOUT_DPI0;
> + *addr = DISP_REG_RDMA1_SOUT_SEL_IN(data);
> + value = DISP_REG_RDMA1_SOUT_DPI0(data);
> } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
> *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
> value = RDMA1_SOUT_DPI1;
> @@ -333,7 +374,8 @@ static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur,
> return value;
> }
>
> -static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
> +static unsigned int mtk_ddp_sel_in(const struct mtk_mmsys_reg_data *data,
> + enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next,
> unsigned int *addr)
> {
> @@ -343,14 +385,14 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
> *addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN;
> value = COLOR0_SEL_IN_OVL0;
> } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
> - *addr = DISP_REG_CONFIG_DPI_SEL_IN;
> - value = DPI0_SEL_IN_RDMA1;
> + *addr = DISP_REG_DPI0_SEL_IN(data);
> + value = DISP_REG_DPI0_SEL_IN_RDMA1(data);
> } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
> *addr = DISP_REG_CONFIG_DPI_SEL_IN;
> value = DPI1_SEL_IN_RDMA1;
> } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
> - *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
> - value = DSI0_SEL_IN_RDMA1;
> + *addr = DISP_REG_DSI0_SEL_IN(data);
> + value = DISP_REG_DSI0_SEL_IN_RDMA1(data);
> } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
> *addr = DISP_REG_CONFIG_DSIO_SEL_IN;
> value = DSI1_SEL_IN_RDMA1;
> @@ -391,37 +433,44 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
> return value;
> }
>
> -static void mtk_ddp_sout_sel(void __iomem *config_regs,
> - enum mtk_ddp_comp_id cur,
> - enum mtk_ddp_comp_id next)
> +static unsigned int mtk_ddp_sout_sel(const struct mtk_mmsys_reg_data *data,
> + enum mtk_ddp_comp_id cur,
> + enum mtk_ddp_comp_id next,
> + unsigned int *addr)
> {
> + unsigned int value;
> +
> if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
> - writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
> - config_regs + DISP_REG_CONFIG_OUT_SEL);
> + *addr = DISP_REG_CONFIG_OUT_SEL;
> + value = BLS_TO_DSI_RDMA1_TO_DPI1;
> } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
> - writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
> - config_regs + DISP_REG_CONFIG_OUT_SEL);
> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
> - writel_relaxed(DSI_SEL_IN_RDMA,
> - config_regs + DISP_REG_CONFIG_DSI_SEL);
> + *addr = DISP_REG_CONFIG_OUT_SEL;
> + value = BLS_TO_DPI_RDMA1_TO_DSI;
> + } else {
> + value = 0;
> }
> +
> + return value;
> }
>
> void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
> + const struct mtk_mmsys_reg_data *reg_data,
> enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next)
> {
> unsigned int addr, value, reg;
>
> - value = mtk_ddp_mout_en(cur, next, &addr);
> + value = mtk_ddp_mout_en(reg_data, cur, next, &addr);
> if (value) {
> reg = readl_relaxed(config_regs + addr) | value;
> writel_relaxed(reg, config_regs + addr);
> }
>
> - mtk_ddp_sout_sel(config_regs, cur, next);
> + value = mtk_ddp_sout_sel(reg_data, cur, next, &addr);
> + if (value)
> + writel_relaxed(value, config_regs + addr);

I think the register could be written inside mtk_ddp_sout_sel(), why do
you move out of that function?

>
> - value = mtk_ddp_sel_in(cur, next, &addr);
> + value = mtk_ddp_sel_in(reg_data, cur, next, &addr);
> if (value) {
> reg = readl_relaxed(config_regs + addr) | value;
> writel_relaxed(reg, config_regs + addr);
> @@ -429,18 +478,19 @@ void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
> }
>
> void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
> + const struct mtk_mmsys_reg_data *reg_data,
> enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next)
> {
> unsigned int addr, value, reg;
>
> - value = mtk_ddp_mout_en(cur, next, &addr);
> + value = mtk_ddp_mout_en(reg_data, cur, next, &addr);
> if (value) {
> reg = readl_relaxed(config_regs + addr) & ~value;
> writel_relaxed(reg, config_regs + addr);
> }
>
> - value = mtk_ddp_sel_in(cur, next, &addr);
> + value = mtk_ddp_sel_in(reg_data, cur, next, &addr);
> if (value) {
> reg = readl_relaxed(config_regs + addr) & ~value;
> writel_relaxed(reg, config_regs + addr);
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
> index f9a7991..43dabb6 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
> @@ -19,11 +19,16 @@
> struct regmap;
> struct device;
> struct mtk_disp_mutex;
> +struct mtk_mmsys_reg_data;
>
> +extern const struct mtk_mmsys_reg_data mt2701_mmsys_reg_data;
> +extern const struct mtk_mmsys_reg_data mt8173_mmsys_reg_data;
> void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
> + const struct mtk_mmsys_reg_data *reg_data,
> enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next);
> void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
> + const struct mtk_mmsys_reg_data *reg_data,
> enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next);
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 57ce470..f260aa7 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -197,6 +197,7 @@ static int mtk_atomic_commit(struct drm_device *drm,
> .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main),
> .ext_path = mt2701_mtk_ddp_ext,
> .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
> + .reg_data = &mt2701_mmsys_reg_data,
> .shadow_register = true,
> };
>
> @@ -207,6 +208,7 @@ static int mtk_atomic_commit(struct drm_device *drm,
> .ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext),
> .third_path = mt2712_mtk_ddp_third,
> .third_len = ARRAY_SIZE(mt2712_mtk_ddp_third),
> + .reg_data = &mt8173_mmsys_reg_data,
> };
>
> static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
> @@ -214,6 +216,7 @@ static int mtk_atomic_commit(struct drm_device *drm,
> .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
> .ext_path = mt8173_mtk_ddp_ext,
> .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
> + .reg_data = &mt8173_mmsys_reg_data,
> };
>
> static int mtk_drm_kms_init(struct drm_device *drm)
> @@ -468,6 +471,8 @@ static int mtk_drm_probe(struct platform_device *pdev)
> INIT_WORK(&private->commit.work, mtk_atomic_work);
> private->data = of_device_get_match_data(dev);
>
> + private->reg_data = private->data->reg_data;
> +
> mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> private->config_regs = devm_ioremap_resource(dev, mem);
> if (IS_ERR(private->config_regs)) {
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> index ecc00ca..b6544a2 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> @@ -15,6 +15,7 @@
> #define MTK_DRM_DRV_H
>
> #include <linux/io.h>
> +#include "mtk_drm_ddp.h"
> #include "mtk_drm_ddp_comp.h"
>
> #define MAX_CRTC 3
> @@ -36,6 +37,8 @@ struct mtk_mmsys_driver_data {
> const enum mtk_ddp_comp_id *third_path;
> unsigned int third_len;
>
> + const struct mtk_mmsys_reg_data *reg_data;
> +
> bool shadow_register;
> };
>
> @@ -48,6 +51,7 @@ struct mtk_drm_private {
> struct device_node *mutex_node;
> struct device *mutex_dev;
> void __iomem *config_regs;
> + const struct mtk_mmsys_reg_data *reg_data;

This is identical to the same one in struct mtk_mmsys_driver_data, so
you need not to create this one.

Regards,
CK

> struct device_node *comp_node[DDP_COMPONENT_ID_MAX];
> struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX];
> const struct mtk_mmsys_driver_data *data;

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