| /* |
| * Video uclass to support displays (see also vidconsole for text) |
| * |
| * Copyright (c) 2015 Google, Inc |
| */ |
| |
| #ifndef _VIDEO_H_ |
| #define _VIDEO_H_ |
| |
| #include <stdio_dev.h> |
| |
| struct udevice; |
| |
| /** |
| * struct video_uc_plat - uclass platform data for a video device |
| * |
| * This holds information that the uclass needs to know about each device. It |
| * is accessed using dev_get_uclass_plat(dev). See 'Theory of operation' at |
| * the top of video-uclass.c for details on how this information is set. |
| * |
| * @align: Frame-buffer alignment, indicating the memory boundary the frame |
| * buffer should start on. If 0, 1MB is assumed |
| * @size: Frame-buffer size, in bytes |
| * @base: Base address of frame buffer, 0 if not yet known |
| * @copy_base: Base address of a hardware copy of the frame buffer. See |
| * CONFIG_VIDEO_COPY. |
| * @copy_size: Size of copy framebuffer, used if @size is 0 |
| * @hide_logo: Hide the logo (used for testing) |
| */ |
| struct video_uc_plat { |
| uint align; |
| uint size; |
| ulong base; |
| ulong copy_base; |
| ulong copy_size; |
| bool hide_logo; |
| }; |
| |
| enum video_polarity { |
| VIDEO_ACTIVE_HIGH, /* Pins are active high */ |
| VIDEO_ACTIVE_LOW, /* Pins are active low */ |
| }; |
| |
| /* |
| * Bits per pixel selector. Each value n is such that the bits-per-pixel is |
| * 2 ^ n |
| */ |
| enum video_log2_bpp { |
| VIDEO_BPP1 = 0, |
| VIDEO_BPP2, |
| VIDEO_BPP4, |
| VIDEO_BPP8, |
| VIDEO_BPP16, |
| VIDEO_BPP32, |
| }; |
| |
| /* |
| * Convert enum video_log2_bpp to bytes and bits. Note we omit the outer |
| * brackets to allow multiplication by fractional pixels. |
| */ |
| #define VNBYTES(bpix) (1 << (bpix)) / 8 |
| |
| #define VNBITS(bpix) (1 << (bpix)) |
| |
| enum video_format { |
| VIDEO_UNKNOWN, |
| VIDEO_RGBA8888, |
| VIDEO_X8B8G8R8, |
| VIDEO_X8R8G8B8, |
| VIDEO_X2R10G10B10, |
| }; |
| |
| /** |
| * struct video_priv - Device information used by the video uclass |
| * |
| * @xsize: Number of pixel columns (e.g. 1366) |
| * @ysize: Number of pixels rows (e.g.. 768) |
| * @rot: Display rotation (0=none, 1=90 degrees clockwise, etc.) |
| * @bpix: Encoded bits per pixel (enum video_log2_bpp) |
| * @format: Pixel format (enum video_format) |
| * @vidconsole_drv_name: Driver to use for the text console, NULL to |
| * select automatically |
| * @font_size: Font size in pixels (0 to use a default value) |
| * @fb: Frame buffer |
| * @fb_size: Frame buffer size |
| * @copy_fb: Copy of the frame buffer to keep up to date; see struct |
| * video_uc_plat |
| * @line_length: Length of each frame buffer line, in bytes. This can be |
| * set by the driver, but if not, the uclass will set it after |
| * probing |
| * @colour_fg: Foreground colour (pixel value) |
| * @colour_bg: Background colour (pixel value) |
| * @flush_dcache: true to enable flushing of the data cache after |
| * the LCD is updated |
| * @fg_col_idx: Foreground color code (bit 3 = bold, bit 0-2 = color) |
| * @bg_col_idx: Background color code (bit 3 = bold, bit 0-2 = color) |
| */ |
| struct video_priv { |
| /* Things set up by the driver: */ |
| ushort xsize; |
| ushort ysize; |
| ushort rot; |
| enum video_log2_bpp bpix; |
| enum video_format format; |
| const char *vidconsole_drv_name; |
| int font_size; |
| |
| /* |
| * Things that are private to the uclass: don't use these in the |
| * driver |
| */ |
| void *fb; |
| int fb_size; |
| void *copy_fb; |
| int line_length; |
| u32 colour_fg; |
| u32 colour_bg; |
| bool flush_dcache; |
| u8 fg_col_idx; |
| u8 bg_col_idx; |
| }; |
| |
| /** |
| * struct video_ops - structure for keeping video operations |
| * @video_sync: Synchronize FB with device. Some device like SPI based LCD |
| * displays needs synchronization when data in an FB is available. |
| * For these devices implement video_sync hook to call a sync |
| * function. vid is pointer to video device udevice. Function |
| * should return 0 on success video_sync and error code otherwise |
| */ |
| struct video_ops { |
| int (*video_sync)(struct udevice *vid); |
| }; |
| |
| #define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops) |
| |
| /** enum colour_idx - the 16 colors supported by consoles */ |
| enum colour_idx { |
| VID_BLACK = 0, |
| VID_RED, |
| VID_GREEN, |
| VID_BROWN, |
| VID_BLUE, |
| VID_MAGENTA, |
| VID_CYAN, |
| VID_LIGHT_GRAY, |
| VID_GRAY, |
| VID_LIGHT_RED, |
| VID_LIGHT_GREEN, |
| VID_YELLOW, |
| VID_LIGHT_BLUE, |
| VID_LIGHT_MAGENTA, |
| VID_LIGHT_CYAN, |
| VID_WHITE, |
| |
| VID_COLOUR_COUNT |
| }; |
| |
| /** |
| * video_index_to_colour() - convert a color code to a pixel's internal |
| * representation |
| * |
| * The caller has to guarantee that the color index is less than |
| * VID_COLOR_COUNT. |
| * |
| * @priv private data of the video device (UCLASS_VIDEO) |
| * @idx color index (e.g. VID_YELLOW) |
| * Return: color value |
| */ |
| u32 video_index_to_colour(struct video_priv *priv, enum colour_idx idx); |
| |
| /** |
| * video_reserve() - Reserve frame-buffer memory for video devices |
| * |
| * Note: This function is for internal use. |
| * |
| * This uses the uclass plat's @size and @align members to figure out |
| * a size and position for each frame buffer as part of the pre-relocation |
| * process of determining the post-relocation memory layout. |
| * |
| * gd->video_top is set to the initial value of *@addrp and gd->video_bottom |
| * is set to the final value. |
| * |
| * @addrp: On entry, the top of available memory. On exit, the new top, |
| * after allocating the required memory. |
| * Return: 0 |
| */ |
| int video_reserve(ulong *addrp); |
| |
| /** |
| * video_clear() - Clear a device's frame buffer to background colour. |
| * |
| * @dev: Device to clear |
| * Return: 0 on success |
| */ |
| int video_clear(struct udevice *dev); |
| |
| /** |
| * video_fill() - Fill a device's frame buffer to a colour. |
| * |
| * @dev: Device to fill |
| * @colour: Colour to use, in the frame buffer's format |
| * Return: 0 on success |
| */ |
| int video_fill(struct udevice *dev, u32 colour); |
| |
| /** |
| * video_fill_part() - Erase a region |
| * |
| * Erase a rectangle of the display within the given bounds. |
| * |
| * @dev: Device to update |
| * @xstart: X start position in pixels from the left |
| * @ystart: Y start position in pixels from the top |
| * @xend: X end position in pixels from the left |
| * @yend: Y end position in pixels from the top |
| * @colour: Value to write |
| * Return: 0 if OK, -ENOSYS if the display depth is not supported |
| */ |
| int video_fill_part(struct udevice *dev, int xstart, int ystart, int xend, |
| int yend, u32 colour); |
| |
| /** |
| * video_sync() - Sync a device's frame buffer with its hardware |
| * |
| * @vid: Device to sync |
| * @force: True to force a sync even if there was one recently (this is |
| * very expensive on sandbox) |
| * |
| * @return: 0 on success, error code otherwise |
| * |
| * Some frame buffers are cached or have a secondary frame buffer. This |
| * function syncs these up so that the current contents of the U-Boot frame |
| * buffer are displayed to the user. |
| */ |
| int video_sync(struct udevice *vid, bool force); |
| |
| /** |
| * video_sync_all() - Sync all devices' frame buffers with there hardware |
| * |
| * This calls video_sync() on all active video devices. |
| */ |
| void video_sync_all(void); |
| |
| /** |
| * video_bmp_get_info() - Get information about a bitmap image |
| * |
| * @bmp_image: Pointer to BMP image to check |
| * @widthp: Returns width in pixels |
| * @heightp: Returns height in pixels |
| * @bpixp: Returns log2 of bits per pixel |
| */ |
| void video_bmp_get_info(void *bmp_image, ulong *widthp, ulong *heightp, |
| uint *bpixp); |
| |
| /** |
| * video_bmp_display() - Display a BMP file |
| * |
| * @dev: Device to display the bitmap on |
| * @bmp_image: Address of bitmap image to display |
| * @x: X position in pixels from the left |
| * @y: Y position in pixels from the top |
| * @align: true to adjust the coordinates to centre the image. If false |
| * the coordinates are used as is. If true: |
| * |
| * - if a coordinate is 0x7fff then the image will be centred in |
| * that direction |
| * - if a coordinate is -ve then it will be offset to the |
| * left/top of the centre by that many pixels |
| * - if a coordinate is positive it will be used unchanged. |
| * Return: 0 if OK, -ve on error |
| */ |
| int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y, |
| bool align); |
| |
| /** |
| * video_get_xsize() - Get the width of the display in pixels |
| * |
| * @dev: Device to check |
| * Return: device frame buffer width in pixels |
| */ |
| int video_get_xsize(struct udevice *dev); |
| |
| /** |
| * video_get_ysize() - Get the height of the display in pixels |
| * |
| * @dev: Device to check |
| * Return: device frame buffer height in pixels |
| */ |
| int video_get_ysize(struct udevice *dev); |
| |
| /** |
| * Set whether we need to flush the dcache when changing the image. This |
| * defaults to off. |
| * |
| * @param flush non-zero to flush cache after update, 0 to skip |
| */ |
| void video_set_flush_dcache(struct udevice *dev, bool flush); |
| |
| /** |
| * Set default colors and attributes |
| * |
| * @dev: video device |
| * @invert true to invert colours |
| */ |
| void video_set_default_colors(struct udevice *dev, bool invert); |
| |
| /** |
| * video_default_font_height() - Get the default font height |
| * |
| * @dev: video device |
| * Returns: Default font height in pixels, which depends on which console driver |
| * is in use |
| */ |
| int video_default_font_height(struct udevice *dev); |
| |
| #ifdef CONFIG_VIDEO_COPY |
| /** |
| * vidconsole_sync_copy() - Sync back to the copy framebuffer |
| * |
| * This ensures that the copy framebuffer has the same data as the framebuffer |
| * for a particular region. It should be called after the framebuffer is updated |
| * |
| * @from and @to can be in either order. The region between them is synced. |
| * |
| * @dev: Vidconsole device being updated |
| * @from: Start/end address within the framebuffer (->fb) |
| * @to: Other address within the frame buffer |
| * Return: 0 if OK, -EFAULT if the start address is before the start of the |
| * frame buffer start |
| */ |
| int video_sync_copy(struct udevice *dev, void *from, void *to); |
| |
| /** |
| * video_sync_copy_all() - Sync the entire framebuffer to the copy |
| * |
| * @dev: Vidconsole device being updated |
| * Return: 0 (always) |
| */ |
| int video_sync_copy_all(struct udevice *dev); |
| #else |
| static inline int video_sync_copy(struct udevice *dev, void *from, void *to) |
| { |
| return 0; |
| } |
| |
| static inline int video_sync_copy_all(struct udevice *dev) |
| { |
| return 0; |
| } |
| |
| #endif |
| |
| /** |
| * video_is_active() - Test if one video device it active |
| * |
| * Return: true if at least one video device is active, else false. |
| */ |
| bool video_is_active(void); |
| |
| /** |
| * video_get_u_boot_logo() - Get a pointer to the U-Boot logo |
| * |
| * Returns: Pointer to logo |
| */ |
| void *video_get_u_boot_logo(void); |
| |
| /* |
| * bmp_display() - Display BMP (bitmap) data located in memory |
| * |
| * @addr: address of the bmp data |
| * @x: Position of bitmap from the left side, in pixels |
| * @y: Position of bitmap from the top, in pixels |
| */ |
| int bmp_display(ulong addr, int x, int y); |
| |
| /* |
| * bmp_info() - Show information about bmp file |
| * |
| * @addr: address of bmp file |
| * Returns: 0 if OK, else 1 if bmp image not found |
| */ |
| int bmp_info(ulong addr); |
| |
| #endif |