第一次发帖好紧张。请问全志的 /dev/disp 用来干嘛的？
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typedef enum tag_DISP_CMD {
/* ----disp global---- */
DISP_CMD_VERSION = 0x00,
DISP_CMD_RESERVE1 = 0x01,
/* fail when the value is 0x02 in linux,why??? */
DISP_CMD_SET_BKCOLOR = 0x3f,
DISP_CMD_GET_BKCOLOR = 0x03,
DISP_CMD_SET_COLORKEY = 0x04,
DISP_CMD_GET_COLORKEY = 0x05,
DISP_CMD_SET_PALETTE_TBL = 0x06,
DISP_CMD_GET_PALETTE_TBL = 0x07,
DISP_CMD_SCN_GET_WIDTH = 0x08,
DISP_CMD_SCN_GET_HEIGHT = 0x09,
DISP_CMD_GET_OUTPUT_TYPE = 0x0a,
DISP_CMD_SET_EXIT_MODE = 0x0c,
DISP_CMD_SET_GAMMA_TABLE = 0x0d,
DISP_CMD_GAMMA_CORRECTION_ON = 0x0e,
DISP_CMD_GAMMA_CORRECTION_OFF = 0x0f,
DISP_CMD_START_CMD_CACHE = 0x10,
DISP_CMD_EXECUTE_CMD_AND_STOP_CACHE = 0x11,
DISP_CMD_SET_BRIGHT = 0x12,
DISP_CMD_SET_CONTRAST = 0x13,
DISP_CMD_SET_SATURATION = 0x14,
DISP_CMD_GET_BRIGHT = 0x16,
DISP_CMD_GET_CONTRAST = 0x17,
DISP_CMD_GET_SATURATION = 0x18,
DISP_CMD_ENHANCE_ON = 0x1a,
DISP_CMD_ENHANCE_OFF = 0x1b,
DISP_CMD_GET_ENHANCE_EN = 0x1c,
DISP_CMD_CLK_ON = 0x1d,
DISP_CMD_CLK_OFF = 0x1e,
/*
* when the screen is not used to display(lcd/tv/vga/hdmi) directly,
* maybe capture the screen and scaler to dram, or as a layer of
* another screen
*/
DISP_CMD_SET_SCREEN_SIZE = 0x1f,
DISP_CMD_CAPTURE_SCREEN = 0x20, /* caputre screen and scaler to dram */
DISP_CMD_DE_FLICKER_ON = 0x21,
DISP_CMD_DE_FLICKER_OFF = 0x22,
DISP_CMD_SET_HUE = 0x23,
DISP_CMD_GET_HUE = 0x24,
DISP_CMD_DRC_OFF = 0x25,
DISP_CMD_GET_DRC_EN = 0x26,
DISP_CMD_DE_FLICKER_SET_WINDOW = 0x27,
DISP_CMD_DRC_SET_WINDOW = 0x28,
DISP_CMD_DRC_ON = 0x29,
DISP_CMD_GET_DE_FLICKER_EN = 0x2a,
/* ----layer---- */
DISP_CMD_LAYER_REQUEST = 0x40,
DISP_CMD_LAYER_RELEASE = 0x41,
DISP_CMD_LAYER_OPEN = 0x42,
DISP_CMD_LAYER_CLOSE = 0x43,
DISP_CMD_LAYER_SET_FB = 0x44,
DISP_CMD_LAYER_GET_FB = 0x45,
DISP_CMD_LAYER_SET_SRC_WINDOW = 0x46,
DISP_CMD_LAYER_GET_SRC_WINDOW = 0x47,
DISP_CMD_LAYER_SET_SCN_WINDOW = 0x48,
DISP_CMD_LAYER_GET_SCN_WINDOW = 0x49,
DISP_CMD_LAYER_SET_PARA = 0x4a,
DISP_CMD_LAYER_GET_PARA = 0x4b,
DISP_CMD_LAYER_ALPHA_ON = 0x4c,
DISP_CMD_LAYER_ALPHA_OFF = 0x4d,
DISP_CMD_LAYER_GET_ALPHA_EN = 0x4e,
DISP_CMD_LAYER_SET_ALPHA_VALUE = 0x4f,
DISP_CMD_LAYER_GET_ALPHA_VALUE = 0x50,
DISP_CMD_LAYER_CK_ON = 0x51,
DISP_CMD_LAYER_CK_OFF = 0x52,
DISP_CMD_LAYER_GET_CK_EN = 0x53,
DISP_CMD_LAYER_SET_PIPE = 0x54,
DISP_CMD_LAYER_GET_PIPE = 0x55,
DISP_CMD_LAYER_TOP = 0x56,
DISP_CMD_LAYER_BOTTOM = 0x57,
DISP_CMD_LAYER_GET_PRIO = 0x58,
DISP_CMD_LAYER_SET_SMOOTH = 0x59,
DISP_CMD_LAYER_GET_SMOOTH = 0x5a,
DISP_CMD_LAYER_SET_BRIGHT = 0x5b, /* brightness */
DISP_CMD_LAYER_SET_CONTRAST = 0x5c, /* contrast */
DISP_CMD_LAYER_SET_SATURATION = 0x5d, /* saturation */
DISP_CMD_LAYER_SET_HUE = 0x5e, /* hue, chroma */
DISP_CMD_LAYER_GET_BRIGHT = 0x5f,
DISP_CMD_LAYER_GET_CONTRAST = 0x60,
DISP_CMD_LAYER_GET_SATURATION = 0x61,
DISP_CMD_LAYER_GET_HUE = 0x62,
DISP_CMD_LAYER_ENHANCE_ON = 0x63,
DISP_CMD_LAYER_ENHANCE_OFF = 0x64,
DISP_CMD_LAYER_GET_ENHANCE_EN = 0x65,
DISP_CMD_LAYER_VPP_ON = 0x67,
DISP_CMD_LAYER_VPP_OFF = 0x68,
DISP_CMD_LAYER_GET_VPP_EN = 0x69,
DISP_CMD_LAYER_SET_LUMA_SHARP_LEVEL = 0x6a,
DISP_CMD_LAYER_GET_LUMA_SHARP_LEVEL = 0x6b,
DISP_CMD_LAYER_SET_CHROMA_SHARP_LEVEL = 0x6c,
DISP_CMD_LAYER_GET_CHROMA_SHARP_LEVEL = 0x6d,
DISP_CMD_LAYER_SET_WHITE_EXTEN_LEVEL = 0x6e,
DISP_CMD_LAYER_GET_WHITE_EXTEN_LEVEL = 0x6f,
DISP_CMD_LAYER_SET_BLACK_EXTEN_LEVEL = 0x70,
DISP_CMD_LAYER_GET_BLACK_EXTEN_LEVEL = 0x71,
/* ----scaler---- */
DISP_CMD_SCALER_REQUEST = 0x80,
DISP_CMD_SCALER_RELEASE = 0x81,
DISP_CMD_SCALER_EXECUTE = 0x82,
/* ----hwc---- */
DISP_CMD_HWC_OPEN = 0xc0,
DISP_CMD_HWC_CLOSE = 0xc1,
DISP_CMD_HWC_SET_POS = 0xc2,
DISP_CMD_HWC_GET_POS = 0xc3,
DISP_CMD_HWC_SET_FB = 0xc4,
DISP_CMD_HWC_SET_PALETTE_TABLE = 0xc5,
/* ----video---- */
DISP_CMD_VIDEO_START = 0x100,
DISP_CMD_VIDEO_STOP = 0x101,
DISP_CMD_VIDEO_SET_FB = 0x102,
DISP_CMD_VIDEO_GET_FRAME_ID = 0x103,
DISP_CMD_VIDEO_GET_DIT_INFO = 0x104,
/* ----lcd---- */
DISP_CMD_LCD_ON = 0x140,
DISP_CMD_LCD_OFF = 0x141,
DISP_CMD_LCD_SET_BRIGHTNESS = 0x142,
DISP_CMD_LCD_GET_BRIGHTNESS = 0x143,
DISP_CMD_LCD_CPUIF_XY_SWITCH = 0x146,
DISP_CMD_LCD_CHECK_OPEN_FINISH = 0x14a,
DISP_CMD_LCD_CHECK_CLOSE_FINISH = 0x14b,
DISP_CMD_LCD_SET_SRC = 0x14c,
DISP_CMD_LCD_USER_DEFINED_FUNC = 0x14d,
/* ----tv---- */
DISP_CMD_TV_ON = 0x180,
DISP_CMD_TV_OFF = 0x181,
DISP_CMD_TV_SET_MODE = 0x182,
DISP_CMD_TV_GET_MODE = 0x183,
DISP_CMD_TV_AUTOCHECK_ON = 0x184,
DISP_CMD_TV_AUTOCHECK_OFF = 0x185,
DISP_CMD_TV_GET_INTERFACE = 0x186,
DISP_CMD_TV_SET_SRC = 0x187,
DISP_CMD_TV_GET_DAC_STATUS = 0x188,
DISP_CMD_TV_SET_DAC_SOURCE = 0x189,
DISP_CMD_TV_GET_DAC_SOURCE = 0x18a,
/* ----hdmi---- */
DISP_CMD_HDMI_ON = 0x1c0,
DISP_CMD_HDMI_OFF = 0x1c1,
DISP_CMD_HDMI_SET_MODE = 0x1c2,
DISP_CMD_HDMI_GET_MODE = 0x1c3,
DISP_CMD_HDMI_SUPPORT_MODE = 0x1c4,
DISP_CMD_HDMI_GET_HPD_STATUS = 0x1c5,
DISP_CMD_HDMI_SET_SRC = 0x1c6,
/* ----vga---- */
DISP_CMD_VGA_ON = 0x200,
DISP_CMD_VGA_OFF = 0x201,
DISP_CMD_VGA_SET_MODE = 0x202,
DISP_CMD_VGA_GET_MODE = 0x203,
DISP_CMD_VGA_SET_SRC = 0x204,
/* ----sprite---- */
DISP_CMD_SPRITE_OPEN = 0x240,
DISP_CMD_SPRITE_CLOSE = 0x241,
DISP_CMD_SPRITE_SET_FORMAT = 0x242,
DISP_CMD_SPRITE_GLOBAL_ALPHA_ENABLE = 0x243,
DISP_CMD_SPRITE_GLOBAL_ALPHA_DISABLE = 0x244,
DISP_CMD_SPRITE_GET_GLOBAL_ALPHA_ENABLE = 0x252,
DISP_CMD_SPRITE_SET_GLOBAL_ALPHA_VALUE = 0x245,
DISP_CMD_SPRITE_GET_GLOBAL_ALPHA_VALUE = 0x253,
DISP_CMD_SPRITE_SET_ORDER = 0x246,
DISP_CMD_SPRITE_GET_TOP_BLOCK = 0x250,
DISP_CMD_SPRITE_GET_BOTTOM_BLOCK = 0x251,
DISP_CMD_SPRITE_SET_PALETTE_TBL = 0x247,
DISP_CMD_SPRITE_GET_BLOCK_NUM = 0x259,
DISP_CMD_SPRITE_BLOCK_REQUEST = 0x248,
DISP_CMD_SPRITE_BLOCK_RELEASE = 0x249,
DISP_CMD_SPRITE_BLOCK_OPEN = 0x257,
DISP_CMD_SPRITE_BLOCK_CLOSE = 0x258,
DISP_CMD_SPRITE_BLOCK_SET_SOURCE_WINDOW = 0x25a,
DISP_CMD_SPRITE_BLOCK_GET_SOURCE_WINDOW = 0x25b,
DISP_CMD_SPRITE_BLOCK_SET_SCREEN_WINDOW = 0x24a,
DISP_CMD_SPRITE_BLOCK_GET_SCREEN_WINDOW = 0x24c,
DISP_CMD_SPRITE_BLOCK_SET_FB = 0x24b,
DISP_CMD_SPRITE_BLOCK_GET_FB = 0x24d,
DISP_CMD_SPRITE_BLOCK_SET_PARA = 0x25c,
DISP_CMD_SPRITE_BLOCK_GET_PARA = 0x25d,
DISP_CMD_SPRITE_BLOCK_SET_TOP = 0x24e,
DISP_CMD_SPRITE_BLOCK_SET_BOTTOM = 0x24f,
DISP_CMD_SPRITE_BLOCK_GET_PREV_BLOCK = 0x254,
DISP_CMD_SPRITE_BLOCK_GET_NEXT_BLOCK = 0x255,
DISP_CMD_SPRITE_BLOCK_GET_PRIO = 0x256,
/* ----framebuffer---- */
DISP_CMD_FB_REQUEST = 0x280,
DISP_CMD_FB_RELEASE = 0x281,
DISP_CMD_FB_GET_PARA = 0x282,
DISP_CMD_GET_DISP_INIT_PARA = 0x283,
/* ---for Displayer Test -------- */
DISP_CMD_MEM_REQUEST = 0x2c0,
DISP_CMD_MEM_RELASE = 0x2c1,
DISP_CMD_MEM_GETADR = 0x2c2,
DISP_CMD_MEM_SELIDX = 0x2c3,
DISP_CMD_SUSPEND = 0x2d0,
DISP_CMD_RESUME = 0x2d1,
DISP_CMD_PRINT_REG = 0x2e0,
/* ---pwm -------- */
DISP_CMD_PWM_SET_PARA = 0x300,
DISP_CMD_PWM_GET_PARA = 0x301,
} __disp_cmd_t;从代码上看 sunxi_disp_ioctl.h，感觉就是显示控制的.
DISP_CMD_LCD_ON
DISP_CMD_LCD_OFF
从字面理解就是液晶的开和关.
DISP_CMD_TV_ON
DISP_CMD_TV_OFF
从字面理解就是CVBS输出的开和关.
从
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同问，这个玩意是干啥用的。
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相当于DRM
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