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sigdoc SSU_DRM私有属性及接口说明

DRM私有属性
及接口说明

1. 客制化properties¶

1.1. CRTC¶

Name	type	Description	R/W
preferred	range	在DTS中设置的值，app优先选择带有`preferred`属性的CRTC	R

1.2. Plane¶

Name	type	Description	R/W
sstar type	enum	Plane所在的layer，GOP UI/Cursor或MOPG、MOPS	R
colorkey	range	通过这个property设置colorkey，只有`sstar type`为GOP的plane会带这个property	R/W
mop_layer_id	range	MOPG/S的layerid，当使用mop merge功能时通过这个ID来确认plane所属的layer	R
realtime_mode	range	是否使用realtime mode，设置此属性的话创建mop layer时将选择realtime模式，用于接收前级HVP的输出。可在dts中设置disp是否支持realtime mode，支持的话该disp上的某个`sstar type`为MOPS的plane将带有这个property	R/W

1.3. Connector¶

Name	type	Description	R/W
preferred	range	在DTS中设置的值，app优先选择带有`preferred`属性的Connector	R
backlight brightness	range	背光亮度，通过此property设置屏的背光亮度	R/W

2. 客制化modifiers¶

User通过modifier设置一张framebuffer的属性，kernel中原生已定义了一些modifier（如ARM的afbc压缩的格式AFBC_FORMAT_MOD_YTR等）。各个厂商可按照这套模式定义自己的modifier，为了支持MOP特有的tile mode跟compress mode功能我们定义了一些私有的modifier，客户使用时需include我们的头文件sstar_drm.h。这里将新增的modifier列举如下：

Vendor code：

#deifne DRM_FORMAT_MOD_VENDOR_SSTAR 0x0b

Mode	Option
Tile mode	SSTAR_MOP_TILE_MODE_16x16 SSTAR_MOP_TILE_MODE_16x32 SSTAR_MOP_TILE_MODE_32x16 SSTAR_MOP_TILE_MODE_32x32
Compress mode	SSTAR_MOP_COMPRESS_MODE_SEG SSTAR_MOP_COMPRESS_MODE_LINE SSTAR_MOP_COMPRESS_MODE_FRAME SSTAR_MOP_COMPRESS_MODE_TO_8BIT SSTAR_MOP_COMPRESS_MODE_TO_6BIT SSTAR_MOP_COMPRESS_MODE_IFC SSTAR_MOP_COMPRESS_MODE_SFBC0 SSTAR_MOP_COMPRESS_MODE__SFBC1 SSTAR_MOP_COMPRESS_MODE__SFBC2 SSTAR_MOP_COMPRESS_MODE_BUTT

3. 客制化IOCTL接口¶

IOCTL定义

#define DRM_SSTAR_TUNNEL_UPDATE       0x00
#define DRM_SSTAR_SET_SSC             0x01
#define DRM_SSTAR_LOAD_PQ             0x02
#define DRM_SSTAR_SET_COLOR_TEMPETURE 0x03
#define DRM_SSTAR_OUTPUT_PARAM        0x04

#define DRM_IOCTL_SSTAR_TUNNEL_UPDATE     \
    DRM_IOWR(DRM_COMMAND_BASE + DRM_SSTAR_TUNNEL_UPDATE, struct drm_sstar_tunnel_update)
#define DRM_IOCTL_SSTAR_SET_SSC DRM_IOWR(DRM_COMMAND_BASE + DRM_SSTAR_SET_SSC, struct drm_sstar_set_ssc)
#define DRM_IOCTL_SSTAR_LOAD_PQ DRM_IOWR(DRM_COMMAND_BASE + DRM_SSTAR_LOAD_PQ, struct drm_sstar_load_pq)
#define DRM_IOCTL_SSTAR_SET_COLOR_TEMPETURE     \
    DRM_IOWR(DRM_COMMAND_BASE + DRM_SSTAR_SET_COLOR_TEMPETURE, struct drm_sstar_set_color_tempeture)
#define DRM_IOCTL_SSTAR_OUTPUT_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_SSTAR_OUTPUT_PARAM, struct drm_sstar_output_param)

相应的数据结构定义

///< Define sstar op type
typedef enum
{
    SSTAR_OP_GET = 0,
    SSTAR_OP_SET = 1,
} SSTAR_OP_T;

struct drm_sstar_tunnel_update
{
    // fenceId / buffer address ...
    uint32_t crtcId;
    uint32_t planeId;
};

struct drm_sstar_set_ssc
{
    bool     bEn;    ///< 1 : enable, 0 : disalbe
    uint32_t crtcId; ///< crtc id
    uint16_t step;   ///< step of SSC
    uint16_t span;   ///< span of SSC
};

///< Define the flag of PQ
typedef enum
{
    SSTAR_PQ_FLAG_NONE                  = 0x0000, ///< No action
    SSTAR_PQ_FLAG_LOAD_BIN              = 0x0001, ///< Load binary file
    SSTAR_PQ_FLAG_SET_SRC_ID            = 0x0002, ///< Set source ID
    SSTAR_PQ_FLAG_PROCESS               = 0x0003, ///< Aplly PQ Setting
    SSTAR_PQ_FLAG_SET_LOAD_SETTING_TYPE = 0x0004, ///< Set load type
    SSTAR_PQ_FLAG_FREE_BIN              = 0x0005, ///< Free binary file
    SSTAR_PQ_FLAG_BYPASS                = 0x0006, ///< OFF device pq setting.
} SSTAR_PQFLAG_E;

struct drm_sstar_load_pq
{
    uint32_t       crtcId;   ///< crtc id
    SSTAR_PQFLAG_E pqFlags;  ///< The flag of pq action
    uint32_t       dataSize; ///< size of PQ binary
    uint64_t       data;     ///< Data of PQ binary
};

struct drm_sstar_set_color_tempeture
{
    uint32_t crtcId;      ///< crtc id
    uint16_t redOffset;   ///< Offset of color R
    uint16_t greenOffset; ///< Offset of color G
    uint16_t blueOffset;  ///< Offset of color B
    uint16_t redColor;    ///< Gain of Color R
    uint16_t greenColor;  ///< Gain of Color G
    uint16_t blueColor;   ///< Gain of Color B
};

///< Define CSC matrix type
typedef enum
{
    SSTAR_CSC_MATRIX_BYPASS = 0, ///< Do not change color space

    SSTAR_CSC_MATRIX_BT601_TO_BT709, ///< Change color space from BT.601 to BT.709
    SSTAR_CSC_MATRIX_BT709_TO_BT601, ///< Change color space from BT.709 to BT.601

    SSTAR_CSC_MATRIX_BT601_TO_RGB_PC, ///< Change color space from BT.601 to RGB
    SSTAR_CSC_MATRIX_BT709_TO_RGB_PC, ///< Change color space from BT.709 to RGB

    SSTAR_CSC_MATRIX_RGB_TO_BT601_PC, ///< Change color space from RGB to BT.601
    SSTAR_CSC_MATRIX_RGB_TO_BT709_PC, ///< Change color space from RGB to BT.709
    SSTAR_CSC_MATRIX_USER,

    SSTAR_CSC_MATRIX_MAX
} SSTAR_CSC_MATRIX_E;

///< Define color space transform inforamtion
typedef struct
{
    SSTAR_CSC_MATRIX_E cscMatrix;  ///< CSC matrix type
    uint32_t           luma;       ///< Adjustment of luminance, Range: 0 ~ 100
    uint32_t           contrast;   ///< Adjustment of contrast, Range:   0 ~ 100
    uint32_t           hue;        ///< Adjustment of Hue, Range: 0 ~ 100
    uint32_t           saturation; ///< Adjustment of saturation, Range: 0 ~ 100
} SSTAR_CSC_T;

struct drm_sstar_output_param
{
    uint32_t    crtcId;      ///< crtc id
    uint32_t    connectorId; ///< connector id
    SSTAR_OP_T  op;          ///< get or set parameter
    SSTAR_CSC_T csc;         ///< Adjustment of CSC
    uint32_t    sharpness;   ///< Adjustment of sharpness
    uint32_t    gain;        ///< Adjustment of driving current, only for VGA
};