diff options
Diffstat (limited to 'include/video.h')
| -rw-r--r-- | include/video.h | 168 |
1 files changed, 162 insertions, 6 deletions
diff --git a/include/video.h b/include/video.h index 65e4ec1e1a..b20f06f335 100644 --- a/include/video.h +++ b/include/video.h @@ -1,14 +1,167 @@ /* -** MPC823 Video Controller -** ======================= -** (C) 2000 by Paolo Scaffardi (arsenio@tin.it) -** AIRVENT SAM s.p.a - RIMINI(ITALY) -** -*/ + * 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; +}; + +/* + * 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) + * @tor: Display rotation (0=none, 1=90 degrees clockwise, etc.) + * @bpix: Encoded bits per pixel + * @fb: Frame buffer + * @fb_size: Frame buffer size + * @line_length: Length of each frame buffer line, in bytes + * @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 + */ +struct video_priv { + /* Things set up by the driver: */ + ushort xsize; + ushort ysize; + ushort rot; + enum video_log2_bpp bpix; + + /* + * Things that are private to the uclass: don't use these in the + * driver + */ + void *fb; + int fb_size; + int line_length; + int colour_fg; + int colour_bg; + bool flush_dcache; + ushort *cmap; +}; + +/* 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_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 + */ +void video_sync(struct udevice *vid); + +/** + * 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); + +#endif /* CONFIG_DM_VIDEO */ + +#ifndef CONFIG_DM_VIDEO + /* Video functions */ struct stdio_dev; @@ -73,4 +226,7 @@ int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs, int lg4573_spi_startup(unsigned int bus, unsigned int cs, unsigned int max_hz, unsigned int spi_mode); #endif + +#endif /* CONFIG_DM_VIDEO */ + #endif |