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Diffstat (limited to 'include/video.h')
| -rw-r--r-- | include/video.h | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/include/video.h b/include/video.h new file mode 100644 index 0000000..485071d --- /dev/null +++ b/include/video.h @@ -0,0 +1,279 @@ +/* + * Video uclass and legacy implementation + * + * Copyright (c) 2015 Google, Inc + * + * MPC823 Video Controller + * ======================= + * (C) 2000 by Paolo Scaffardi (arsenio@tin.it) + * AIRVENT SAM s.p.a - RIMINI(ITALY) + * + */ + +#ifndef _VIDEO_H_ +#define _VIDEO_H_ + +#ifdef CONFIG_DM_VIDEO + +#include <stdio_dev.h> + +struct video_uc_platdata { + uint align; + uint size; + ulong base; +}; + +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)) + +/** + * 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) + * @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 + * @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 + * @cmap: Colour map for 8-bit-per-pixel displays + * @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; + 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; + int line_length; + u32 colour_fg; + u32 colour_bg; + bool flush_dcache; + ushort *cmap; + u8 fg_col_idx; + u8 bg_col_idx; +}; + +/* Placeholder - there are no video operations at present */ +struct video_ops { +}; + +#define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops) + +/** + * video_reserve() - Reserve frame-buffer memory for video devices + * + * Note: This function is for internal use. + * + * This uses the uclass platdata'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 color. + * + * @dev: Device to clear + * @return 0 + */ +int video_clear(struct udevice *dev); + +/** + * video_sync() - Sync a device's frame buffer with its hardware + * + * 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. + * + * @dev: Device to sync + * @force: True to force a sync even if there was one recently (this is + * very expensive on sandbox) + */ +void 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_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 unchnaged. + * @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); + +#endif /* CONFIG_DM_VIDEO */ + +#ifndef CONFIG_DM_VIDEO + +/* Video functions */ + +/** + * Display a BMP format bitmap on the screen + * + * @param bmp_image Address of BMP image + * @param x X position to draw image + * @param y Y position to draw image + */ +int video_display_bitmap(ulong bmp_image, int x, int y); + +/** + * Get the width of the screen in pixels + * + * @return width of screen in pixels + */ +int video_get_pixel_width(void); + +/** + * Get the height of the screen in pixels + * + * @return height of screen in pixels + */ +int video_get_pixel_height(void); + +/** + * Get the number of text lines/rows on the screen + * + * @return number of rows + */ +int video_get_screen_rows(void); + +/** + * Get the number of text columns on the screen + * + * @return number of columns + */ +int video_get_screen_columns(void); + +/** + * Set the position of the text cursor + * + * @param col Column to place cursor (0 = left side) + * @param row Row to place cursor (0 = top line) + */ +void video_position_cursor(unsigned col, unsigned row); + +/* Clear the display */ +void video_clear(void); + +#if defined(CONFIG_FORMIKE) +int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int spi_mode); +#endif +#if defined(CONFIG_LG4573) +int lg4573_spi_startup(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int spi_mode); +#endif + +/* + * video_get_info_str() - obtain a board string: type, speed, etc. + * + * This is called if CONFIG_CONSOLE_EXTRA_INFO is enabled. + * + * line_number: location to place info string beside logo + * info: buffer for info string (empty if nothing to display on this + * line) + */ +void video_get_info_str(int line_number, char *info); + +#endif /* !CONFIG_DM_VIDEO */ + +#endif |