This document is a google translated, asciified version of
A10_linux_display_driver_interface.xls and
A13_linux_display_driver_interface.xls.

It documents all the ioctls available for the sunxi disp driver,
although most are very self-explanatory.

-- Libv.

A) FB engine.


1) FBIOGET_VSCREENINFO

1) FBIOGET_VSCREENINFO

Args:
	* var screen information（struct fb_var_screeninfo*）
Returns:
	Success: 0;
	Failed: errno.

Get framebuffer var screen information.

2) FBIOPUT_VSCREENINFO

Args:
	* var screen information(struct fb_var_screeninfo*）

Returns:
	Success: 0;
	Failed: errno.

Set framebuffer var screen information.

3) FBIOGET_FSCREENINFO

Args:
	* fix screen information(struct fb_fix_screeninfo *)

Returns:
	Success: 0;
	Failed: errno.

Get framebuffer fix screen information.

4) FBIOPUTCMAP

Args:
	* Palette(struct fb_cmap_user*)

Returns:
	Success: 0;
	Failed: errno.

Set framebuffer Palette.

5) FBIOGETCMAP

Args:
	* Palette(struct fb_cmap_user*)

Returns:
	Success: 0;
	Failed: errno.

Get framebuffer Palette.

6) FBIOPAN_DISPLAY

Args:
	* var screen information(struct fb_var_screeninfo*）
Returns:
	Success: 0;
	Failed: errno.

pan display, adjustment var.xoffset, var.yoffset, var.xres, var.yres.

7) FBIOBLANK

Args:
	* blank mode
Returns:
	Success: 0;
	Failed: errno.

Currently defined for the framebuffer the corresponding layers switch??? (todo)

8) FBIOGET_LAYER_HDL_0

Args:
	* Back the Layers handle （unsigned int*）

Returns:
	Success: 0;
	Failed: errno.

Get framebuffer handle corresponding layers on the screen 0.


9) FBIOGET_LAYER_HDL_1

Args:
	* Back the Layers handle （unsigned int*）

Returns:
	Success: 0;
	Failed: errno.

Get framebuffer handle corresponding layers on the screen 1.

B) Disp engine.

1) framebuffer:
---------------

1.1) DISP_CMD_FB_REQUEST

Args:
	* framebuffer id(0~7)
	* the framebuffer to apply parameters （__disp_fb_create_para_t *）

Returns:
	Success: framebuffer handle.
	Failed: errno.

Application framebuffer, the framebuffer operation must apply.

1.2) DISP_CMD_FB_RELEASE

Args:
	framebuffer_handle

Returns:
	Success: 0;
	Failed: errno.

Release framebuffer

2) global:
----------

2.1) DISP_CMD_START_CMD_CACHE

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Start cache. Behind the IO command will not be executed immediately, but wait
until call DISP_CMD_EXECUTE_CMD_AND_STOP_CACHE after execution in conjunction.

2.2) DISP_CMD_EXECUTE_CMD_AND_STOP_CACHE

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Execute commands and stop the cache.

2.3) DISP_CMD_SET_BKCOLOR

Args:
	* screen [0, 1]
	* background colour (__disp_color_t *)

Returns:
	Success: 0;
	Failed: errno.

Set the background colour.

2.4) DISP_CMD_GET_BKCOLOR

Args:
	* screen [0, 1]
	* Background colour (__disp_color_t *)

Returns:
	Success: 0;
	Failed: errno.

Get the background colour.

5) DISP_CMD_SET_COLORKEY

Args:
	* screen [0, 1]
	* color key parameter (__disp_colorkey_t *)

Returns:
	Success: 0;
	Failed: errno.

Set color key.

6) DISP_CMD_GET_COLORKEY

Args:
	* screen [0, 1]
	* color key parameter (__disp_colorkey_t *)

Returns:
	Success: 0;
	Failed: errno.

Get color key.

7) DISP_CMD_SET_PALETTE_TBL

Args:
	* screen id (0/1)
	* Address (__u32 *)
	* offset (__u32, 4bytes alignment)
	* size (4bytes alignment, unit byte)

Returns:
	Success: 0;
	Failed: errno.

Set the palette, the total size of the system palette is 256 * 4 byte, and can
be set to any period of continuous regional palette.

8) DISP_CMD_GET_PALETTE_TBL

Args:
	* screen [0, 1]
	* Address (__u32 *)
	* offset (__u32, 4bytes alignment)
	* size (4bytes alignment, unit byte)

Returns:
	Success: 0;
	Failed: errno.

Get palette

9) DISP_CMD_SCN_GET_WIDTH

Args:
	screen [0, 1]

Returns:
	The width of the screen.

Get the current width of the screen.

10) DISP_CMD_SCN_GET_HEIGHT

Args:
	screen [0, 1]

Returns:
	The height of the screen.

Get the current height of the screen.

11) DISP_CMD_GET_OUTPUT_TYPE

Args:
	screen [0, 1]

Returns:
	Output type (__disp_output_type_t)

Get the current output type (LCD,TV,HDMI,VGA,NONE)

12) DISP_CMD_SET_GAMMA_TABLE

Args:
	* screen [0, 1]
	* Address(__u32 *)
	* N/A
	* size (4bytes alignment, unit byte)

Returns:
	Success: 0;
	Failed: errno.

Set the gamma correction coefficient table.

13) DISP_CMD_GAMMA_CORRECTION_ON

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Enabel gamma correction.

14) DISP_CMD_GAMMA_CORRECTION_OFF

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Disable gamma correction.

15) DISP_CMD_SET_BRIGHT

Args:
	* screen [0, 1]
	* brightness value ([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set the brightness of the screen.

16) DISP_CMD_GET_BRIGHT

Args:
	screen [0, 1]

Returns:
	The brightness of the screen.

Get the brightness of the screen.

17) DISP_CMD_SET_CONTRAST

Args:
	* screen [0, 1]
	* contrast values ([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set the contrast of the screen.

18) DISP_CMD_GET_CONTRAST

Args:
	screen [0, 1]

Returns
	The contrast of the screen.

Get the contrast of the screen.

19) DISP_CMD_SET_SATURATION

Args:
	* screen [0, 1]
	* saturation value ([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set screen saturation.

20) DISP_CMD_GET_SATURATION

Args:
	screen [0, 1]

Returns
	screen saturation

Get screen saturation.

21) DISP_CMD_SET_HUE (sun4i only)

Args:
	* screen [0, 1]
	* saturation value ([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set screen hue.

22) DISP_CMD_GET_HUE (sun4i only)

Args:
	* screen [0, 1]

Returns:
	* screen hue

Get screen hue.

23) DISP_CMD_ENHANCE_ON

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Enable screen enhance function.

24) DISP_CMD_ENHANCE_OFF

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Disable screen enhance function.

25) DISP_CMD_GET_ENHANCE_EN

Args:
	screen [0, 1]

Returns:
	0: disabled
	1: enabled

Query whether screen enhance function is enabled.

26) DISP_CMD_DE_FLICKER_ON

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Enable deflicker function （in the output interlace where used）.

27) DISP_CMD_DE_FLICKER_OFF

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Disable deflicker function.

3) layer:
---------

3.1) DISP_CMD_LAYER_REQUEST

Args:
	* screen [0, 1]
	* layers work mode (__disp_layer_work_mode_t)

Returns:
	Success :layer_handle
	Failed :NULL

The application layer, the drive will only be allocated to a layer out, did not
make any of the layers set, it is recommended to set this parameter layers call
DISP_CMD_LAYER_SET_PARA command immediately after the application layer.

3.2) DISP_CMD_LAYER_RELEASE

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

The release layer, after the release of the layers, all the layers registers
are cleared to the default of value, so if you want to re-think using the layer
must re-apply.

3.3) DISP_CMD_LAYER_OPEN

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Open the Layer, that can see the layers.

3.4) DISP_CMD_LAYER_CLOSE

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Close layer.

3.5) DISP_CMD_LAYER_SET_FB

Args:
	* screen [0, 1]
	* layer_handle
	* framebuffer information (__disp_fb_t *)

Returns:
	Success: 0;
	Failed: errno.

Set layer framebuffer, the original source window remains set.

3.6) DISP_CMD_LAYER_GET_FB

Args:
	* screen [0, 1]
	* layer_handle
	* framebuffer information (__disp_fb_t *)

Returns:
	Success: 0;
	Failed: errno.

Get the layers framebuffer.

3.7) DISP_CMD_LAYER_SET_SRC_WINDOW

Args:
	* screen [0, 1]
	* layer_handle
	* source window (__disp_rect *)

Returns:
	Success: 0;
	Failed: errno.

Set the layers source window

3.8) DISP_CMD_LAYER_GET_SRC_WINDOW

Args:
	* screen [0, 1]
	* layer_handle
	* source window(__disp_rect *)

Returns:
	Success: 0;
	Failed: errno.

Get the layers source window.

3.9) DISP_CMD_LAYER_SET_SCN_WINDOW

Args:
	* screen [0, 1]
	* layer_handle
	* screen window (__disp_rect *)

Returns:
	Success: 0;
	Failed: errno.

Set the layers screen window.

3.10) DISP_CMD_LAYER_GET_SCN_WINDOW

Args:
	* screen [0, 1]
	* layer_handle
	* screen window (__disp_rect *)

Returns:
	Success: 0;
	Failed: errno.

Get the layers screen window.

3.11) DISP_CMD_LAYER_SET_PARA

Args:
      * screen [0, 1]
      * layer_handle
      * layers parameter (__disp_layer_info_t *)

Returns:
	Success: 0;
	Failed: errno.

Set layer parameters, all the parameters of the layer are set by the command,
in addition to the priority (priority adjustment can only be implemented
through DISP_CMD_LAYER_TOP / DISP_CMD_LAYER_BOTTOM).

3.12) DISP_CMD_LAYER_GET_PARA

Args:
	* screen [0, 1]
	* layer_handle
	* layers parameter(__disp_layer_info_t *)

Returns:
	Success: 0;
	Failed: errno.

Get layer parameter.

3.13) DISP_CMD_LAYER_ALPHA_ON

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Open layers of global alpha function, that use surface alpha.

3.14) DISP_CMD_LAYER_ALPHA_OFF

Args:
	* screen [0, 1]
	* layer_handle
Returns:
	Success: 0;
	Failed: errno.

Open layers of global alpha function, that use surface alpha.

3.15) DISP_CMD_LAYER_GET_ALPHA_EN

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	0: disabled
	1: enabled

Query whether layer has global alpha enabled.

3.16) DISP_CMD_LAYER_SET_ALPHA_VALUE

Args:
	* screen [0, 1]
	* layer_handle
	* global alpha value (__u32)

Returns:
	Success: 0;
	Failed: errno.

Get a layers global alpha value.

3.17) DISP_CMD_LAYER_GET_ALPHA_VALUE

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	* global alpha value

Get a layers global alpha value.

3.18) DISP_CMD_LAYER_CK_ON

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Enable colour key on a layer.

3.19) DISP_CMD_LAYER_CK_OFF

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Disable a layers colour key.

3.20) DISP_CMD_LAYER_GET_CK_EN

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	0: colour key disabled.
	1: colour key enabled.

Enable a layers colour key.

3.21) DISP_CMD_LAYER_SET_PIPE

Args:
	* screen [0, 1]
	* layer_handle
	* pipe (__u32)

Returns:
	Success: 0;
	Failed: errno.

Set the layer pipe, a pipe layer can only be high priority coverage low
priority, rather than do alpha blending.

3.22) DISP_CMD_LAYER_GET_PIPE

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	pipe

Get the pipe associated with the layer.

3.23) DISP_CMD_LAYER_TOP

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Layer top, the relative relationship between the other layers priority remains
unchanged.

3.24) DISP_CMD_LAYER_BOTTOM

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Set bottom layer, the relative relationship between the other layers of the
priority remains the same.

3.25) DISP_CMD_LAYER_GET_PRIO

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	priority.

Get priority layers (layers from the bottom to the top priority from low to high).

3.26) DISP_CMD_LAYER_SET_SMOOTH

Args:
	* screen [0, 1]
	* layer_handle
	* smooth (__disp_video_smooth_t)

Returns:
	Success: 0;
	Failed: errno.

Set the layer of smooth (the layer must scaler layers).

3.27) DISP_CMD_LAYER_GET_SMOOTH

Args:
	* screen [0, 1]
	* layer_handle

Returns
	smooth (__disp_video_smooth_t)

Get the layers smooth (the layer must scaler layer).

3.28) DISP_CMD_LAYER_SET_BRIGHT

Args:
	* screen [0, 1]
	* layer_handle
	* brightness value([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set the brightness of the scaler layer.

3.29) DISP_CMD_LAYER_GET_BRIGHT

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	brightness level.

Get scaler layers brightness.

3.30) DISP_CMD_LAYER_SET_CONTRAST

Args:
	* screen [0, 1]
	* layer_handle
	* contrast value ([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set scaler layers contrast.

3.31) DISP_CMD_LAYER_GET_CONTRAST

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	* contrast value.

Get scaler layers contrast.

3.32) DISP_CMD_LAYER_SET_SATURATION

Args:
	* screen [0, 1]
	* layer_handle
	* saturation value ([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set scaler layers saturation

3.33) DISP_CMD_LAYER_GET_SATURATION

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	saturation value.

Get scaler layers saturation.

3.34) DISP_CMD_LAYER_SET_HUE

Args:
	* screen [0, 1]
	* layer_handle
	* tone/hue value ([0-100], default: 50)

Returns:
	Success: 0;
	Failed: errno.

Set scaler layers tone/hue.

3.35) DISP_CMD_LAYER_GET_HUE

Args:
	* screen [0, 1]
	* layer_handle

Returns
	tone/hue value.

Get scaler layers tone/hue.

3.36) DISP_CMD_LAYER_ENHANCE_ON

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Enable scaler layers enhance function.

3.37) DISP_CMD_LAYER_ENHANCE_OFF

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Disable scaler layers enhance function.

3.38) DISP_CMD_LAYER_GET_ENHANCE_EN

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	0: disabled
	1: enabled.

Query whether a scaler layers enhance function is enabled.

3.39) DISP_CMD_LAYER_VPP_ON

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Enable video post-processing functions (only for scaler layers).

40) DISP_CMD_LAYER_VPP_OFF

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Disable video post-processing functions.

3.41) DISP_CMD_LAYER_GET_VPP_EN

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	0: disabled
	1: enabled

Query whether a layers vpp function is enabled.

3.42) DISP_CMD_LAYER_SET_LUMA_SHARP_LEVEL

Args:
	* screen [0, 1]
	* layer_handle
	* Luminance sharpening level [0-4]
		* 0: disabled.
		* 1-4: higher level, sharper.

Returns:
	Success: 0;
	Failed: errno.

Set luminance sharpening level.

3.43) DISP_CMD_LAYER_GET_LUMA_SHARP_LEVEL

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Luminance sharpening level.

Get luminance sharpening level.

3.44) DISP_CMD_LAYER_SET_CHROMA_SHARP_LEVEL

Args:
	* screen [0, 1]
	* layer_handle
	* hue sharpening level [0-4]
		* 0: disabled.
		* 1-4: higher level, sharper.

Returns:
	Success: 0;
	Failed: errno.

Set hue sharpening level.

3.45) DISP_CMD_LAYER_GET_CHROMA_SHARP_LEVEL

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	hue sharpening level.

Get hue sharpening level.

3.46) DISP_CMD_LAYER_SET_WHITE_EXTEN_LEVEL

Args:
	* screen [0, 1]
	* layer_handle
	* White level expansion value [0-4]
		* 0: disabled.
		* 1-4: higher level, sharper.

Returns:
	Success: 0;
	Failed: errno.

Set white level expansion value.

3.47) DISP_CMD_LAYER_GET_WHITE_EXTEN_LEVEL

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	white level expansion value.

Get white level expansion value.

3.48) DISP_CMD_LAYER_SET_BLACK_EXTEN_LEVEL

Args:
	* screen [0, 1]
	* layer_handle
	* Black level expansion value [0-4]
		* 0: disabled.
		* 1-4: higher level, sharper.

Returns:
	Success: 0;
	Failed: errno.

Set black level expansion value.

3.49) DISP_CMD_LAYER_GET_BLACK_EXTEN_LEVEL

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	black level expansion value.

Get black level expansion value.

4) scaler:
----------

4.1) DISP_CMD_SCALER_REQUEST

Args:
	screen [0, 1]

Returns:
	scaler handle

Application scaler is used to write-back.

4.2) DISP_CMD_SCALER_RELEASE

Args:
	* screen [0, 1]
	* scaler handle

Returns:
	Success: 0;
	Failed: errno.

Release scaler.

4.3) DISP_CMD_SCALER_EXECUTE

Args:
	* screen [0, 1]
	* scaler handle
	* scaler parameter (__disp_scaler_para_t *)

Returns:
	Success: 0;
	Failed: errno.

Perform scaler.

5) hwc:
-------

5.1) DISP_CMD_HWC_OPEN

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Open hw cursor.

5.2) DISP_CMD_HWC_CLOSE

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Close hw cursor.

5.3) DISP_CMD_HWC_SET_POS

Args:
	* screen [0, 1]
	* Starting coordinate on screen (__disp_pos_t *)

Returns:
	Success: 0;
	Failed: errno.

Set starting coordinates of the hw cursor on the screen.

5.4) DISP_CMD_HWC_GET_POS

Args:
	* screen [0, 1]
	* Starting coordinate on screen (__disp_pos_t *)

Returns:
	Success: 0;
	Failed: errno.

Get starting coordinates of the hw cursor on the screen.

5.5) DISP_CMD_HWC_SET_FB

Args:
	* screen [0, 1]
	* (__disp_hwc_pattern_t *)

Returns:
	Success: 0;
	Failed: errno.

Set hw cursor framebuffer information.

5.6) DISP_CMD_HWC_SET_PALETTE_TABLE

Args:
	* screen [0, 1]
	* Address (__u32 *)
	* N/A
	* size (4 bytes alignment, unit byte)

Returns:
	Success: 0;
	Failed: errno.

Set palette table for hw cursor.

6) video:
---------

6.1) DISP_CMD_VIDEO_START

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Start video playback.

6.2) DISP_CMD_VIDEO_STOP

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: 0;
	Failed: errno.

Stop video playback.

6.3) DISP_CMD_VIDEO_SET_FB

Args:
	* screen [0, 1]
	* layer_handle
	* framebuffer information (__disp_video_fb_t *)

Returns:
	Success: 0;
	Failed: errno.

Set video framebuffer information.

6.4) DISP_CMD_VIDEO_GET_DIT_INFO

Args:
     * screen [0, 1]
     * layer_handle
     * deinterlace information (__disp_dit_info_t *)

Returns:
	deinterlace information

The deinterlace information for video display.

6.5) DISP_CMD_VIDEO_GET_FRAME_ID

Args:
	* screen [0, 1]
	* layer_handle

Returns:
	Success: framebuffer id
	Failed: errno.

Get currently being displayed framebuffer id.

7) lcd:
-------

7.1) DISP_CMD_LCD_ON

Args:
	screen [0, 1]
Returns:
	Success: 0;
	Failed: errno.

Enable LCD

7.2) DISP_CMD_LCD_OFF

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Disable LCD.

7.3) DISP_CMD_LCD_SET_BRIGHTNESS

Args:
	* screen [0, 1]
	* brightness (__disp_lcd_bright_t)

Returns:
	Success: 0;
	Failed: errno.

Set LCD brightness.

7.4) DISP_CMD_LCD_GET_BRIGHTNESS

Args:
	* screen [0, 1]

Returns:
	LCD brightness (__disp_lcd_bright_t)

Get LCD brightness.

7.5) DISP_CMD_LCD_SET_SRC

Args:
	* screen [0, 1]
	* lcd source (__disp_lcdc_src_t)

Returns:
	Success: 0;
	Failed: errno.

Set source for LCD.

8) tv:
------

8.1) DISP_CMD_TV_ON

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Enable TV display.

8.2) DISP_CMD_TV_OFF

Args:
	* screen [0, 1]
Returns:
	Success: 0;
	Failed: errno.

Disable TV display.

8.3) DISP_CMD_TV_SET_MODE

Args:
	* screen [0, 1]
	* mode (__disp_tv_mode_t)

Returns:
	Success: 0;
	Failed: errno.

Set the mode on the TV display.

8.4) DISP_CMD_TV_GET_MODE

Args:
	screen [0, 1]

Returns:
	mode (__disp_tv_mode_t)

Get current TV mode.

8.4) DISP_CMD_TV_GET_INTERFACE

Args:
	screen [0, 1]

Returns:
	interface (disp_tv_output_t)

Get TV interface.

8.5) DISP_CMD_TV_SET_SRC

Args:
	* screen [0, 1]
	* source (__disp_lcdc_src_t)

Returns:
	Success: 0;
	Failed: errno.

Set TV source.

9) hdmi:
--------

9.1) DISP_CMD_HDMI_ON

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Enable HDMI display.

9.2) DISP_CMD_HDMI_OFF

Args:
	screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Disable HDMI display.

9.3) DISP_CMD_HDMI_SET_MODE

Args:
	* screen [0, 1]
	* mode (__disp_tv_mode_t)

Returns:
	Success: 0;
	Failed: errno.

Set HDMI mode.

9.4) DISP_CMD_HDMI_GET_MODE

Args:
	screen [0, 1]

Returns:
	mode (__disp_tv_mode_t)

Get current HDMI mode.

9.5) DISP_CMD_HDMI_SUPPORT_MODE

Args:
     * screen [0, 1]
     * mode(__disp_tv_mode_t)


Returns:
	0: invalid
	1: supported.

Query whether a mode is supported on hdmi.

9.6) DISP_CMD_HDMI_GET_HPD_STATUS

Args
	screen [0, 1]

Returns:
	0: nothing attached
	1: hpd attached.

Query the current hdmi hpd status.

9.7) DISP_CMD_HDMI_SET_SRC

Args:
	* screen [0, 1]
	* source (__disp_lcdc_src_t)

Returns:
	Success: 0;
	Failed: errno.

Set hdmi source.

10) vga:
--------

10.1) DISP_CMD_VGA_ON

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Enable VGA display.

10.2) DISP_CMD_VGA_OFF

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Disable VGA display.

10.3) DISP_CMD_VGA_SET_MODE

Args:
	* screen [0, 1]
	* mode (__disp_vga_mode_t)

Returns:
	Success: 0;
	Failed: errno.

Set VGA mode.

10.4) DISP_CMD_VGA_GET_MODE

Args:
	* screen [0, 1]

Returns:
	* mode (__disp_vga_mode_t)

Get current VGA mode.

10.4) DISP_CMD_VGA_SET_SRC

Args:
	* screen [0, 1]
	* source (__disp_lcdc_src_t)

Returns:
	Success: 0;
	Failed: errno.

Set source of vga display.

11) sprite:
-----------

11.1) DISP_CMD_SPRITE_OPEN

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Global switch to open the sprite, sprite, each the sprite block of switch can be set.

11.2) DISP_CMD_SPRITE_CLOSE

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Close sprite.

11.3) DISP_CMD_SPRITE_SET_FORMAT

Args:
	* screen [0, 1]
	* format (__disp_pixel_fmt_t)
	* pixel sequence (__disp_pixel_seq_t)

Returns:
	Success: 0;
	Failed: errno.

Set the format of the sprite Note only sprite block format is the same, so the
format is valid for all block, each block can no longer separate set its
format.

11.4) DISP_CMD_SPRITE_GLOBAL_ALPHA_ENABLE

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Enable global alpha on sprite.

11.5) DISP_CMD_SPRITE_GLOBAL_ALPHA_DISABLE

Args:
	* screen [0, 1]

Returns:
	Success: 0;
	Failed: errno.

Disable global alpha on sprite.

11.6) DISP_CMD_SPRITE_GET_GLOBAL_ALPHA_ENABLE

Args:
	* screen [0, 1]

Returns:
	0: disabled
	1: enabled

Query the current state of global alpha on the sprite.

11.7) DISP_CMD_SPRITE_SET_GLOBAL_ALPHA_VALUE

Args:
	* screen [0, 1]
	* global alpha value

Returns:
	Success: 0;
	Failed: errno.

Set the value of global alpha on the sprite.

11.8) DISP_CMD_SPRITE_GET_GLOBAL_ALPHA_VALUE

Args:
	* screen [0, 1]

Returns:
	global alpha value

Get the value of global alpha on the sprite.

11.9) DISP_CMD_SPRITE_SET_ORDER

Args:
	* screen [0, 1]
	* block handle
	* target block handle

Returns:
	Success: 0;
	Failed: errno.

A block to the front of the target block.

11.10) DISP_CMD_SPRITE_GET_TOP_BLOCK

Args:
	* screen [0, 1]

Returns:
	* block handle

Get the handle of the top block.

11.11) DISP_CMD_SPRITE_GET_BOTTOM_BLOCK

Args:
	* screen [0, 1]

Returns:
	* block handle

Get the handle of the bottom block.

11.12) DISP_CMD_SPRITE_SET_PALETTE_TBL

Args:
	* screen [0, 1]
	* Address (__u32 *)
	* offset (__u32, 4 bytes alignment)
	* size (4 bytes alignment, unit byte)

Returns:
	Success: 0;
	Failed: errno.

Set sprite palette table.

11.13) DISP_CMD_SPRITE_GET_BLOCK_NUM

Args:
	* screen [0, 1]

Returns:
	Number of blocks used.

Get the number of blocks in use.

11.14) DISP_CMD_SPRITE_BLOCK_REQUEST

Args:
	* screen [0, 1]
	* block parameter (__disp_sprite_block_para_t *)

Returns:
	Success: 0;
	Failed: errno.

Request a sprite block.

11.15) DISP_CMD_SPRITE_BLOCK_RELEASE

Args:
	* screen [0, 1]
	* block handle
Returns:
	Success: 0;
	Failed: errno.

Release a sprite block.

11.16) DISP_CMD_SPRITE_BLOCK_OPEN

Args:
	* screen [0, 1]
	* block handle

Returns:
	Success: 0;
	Failed: errno.

Open a sprite block.

11.17) DISP_CMD_SPRITE_BLOCK_CLOSE

Args:
	* screen [0, 1]
	* block handle

Returns:
	Success: 0;
	Failed: errno.

Close a sprite block.

11.18) DISP_CMD_SPRITE_BLOCK_SET_SOURCE_WINDOW

Args:
	* screen [0, 1]
	* block handle
	* block source window (__disp_rect_t *)

Returns:
	Success: 0;
	Failed: errno.

Set the sprite block the source window, because the sprite block without
scaling function, driven only concerned with x and y, while the width and
height of the width and height of the screen window.

11.19) DISP_CMD_SPRITE_BLOCK_GET_SOURCE_WINDOW

Args:
	* screen [0, 1]
	* block handle
	* block source window (__disp_rect_t *)

Returns:
	Success: 0;
	Failed: errno.

Get the source window of a sprite block.

11.20) DISP_CMD_SPRITE_BLOCK_SET_SCREEN_WINDOW

Args:
	* screen [0, 1]
	* block handle
	* block screen window (__disp_rect_t *)

Returns:
	Success: 0;
	Failed: errno.

Set screen window of a sprite block.

11.21) DISP_CMD_SPRITE_BLOCK_GET_SCREEN_WINDOW

Args:
	* screen [0, 1]
	* block handle
	* block screen window (__disp_rect_t *)

Returns:
	Success: 0;
	Failed: errno.

Get screen window of a sprite block.

11.22) DISP_CMD_SPRITE_BLOCK_SET_FB

Args:
	* screen [0, 1]
	* block handle
	* block framebuffer (__disp_fb_t *)

Returns:
	Success: 0;
	Failed: errno.

Set the framebuffer information for the sprite block, only cares about the
address and line width.

11.23) DISP_CMD_SPRITE_BLOCK_GET_FB

Args:
	* screen [0, 1]
	* block handle
	* block framebuffer(__disp_fb_t *)

Returns:
	Success: 0;
	Failed: errno.

Get framebuffer information of a sprite block.

11.24) DISP_CMD_SPRITE_BLOCK_SET_PARA

Args:
	* screen [0, 1]
	* block handle
	* block parameters (__disp_sprite_block_para_t *)

Returns:
	Success: 0;
	Failed: errno.

Set sprite block parameters.

11.25) DISP_CMD_SPRITE_BLOCK_GET_PARA

Args:
	* screen [0, 1]
	* block handle
	* block parameters (__disp_sprite_block_para_t *)

Returns:
	Success: 0;
	Failed: errno.

Get sprite block parameters

11.26) DISP_CMD_SPRITE_BLOCK_SET_TOP

Args:
	* screen [0, 1]
	* block handle

Returns:
	Success: 0;
	Failed: errno.

Move the sprite block to the top.

11.27) DISP_CMD_SPRITE_BLOCK_SET_BOTTOM

Args:
	* screen [0, 1]
	* block handle

Returns:
	Success: 0;
	Failed: errno.

Move the sprite block to the bottom.

11.28) DISP_CMD_SPRITE_BLOCK_GET_PREV_BLOCK

Args:
	* screen [0, 1]
	* block handle

Returns:
	block handle

Get the previous sprite block handle.

11.29) DISP_CMD_SPRITE_BLOCK_GET_NEXT_BLOCK

Args:
	* screen [0, 1]
	* block handle

Returns:
	* block handle

Get the next block handle.

11.30) DISP_CMD_SPRITE_BLOCK_GET_PRIO

Args:
	* screen [0, 1]
	* block handle

Returns:
	block priority.

Get the ordering of the sprite block (from bottom to top).