mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-25 19:38:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
At present the 'bdinfo' command shows the framebuffer address, but not the address of the copy framebuffer, if present. Add support for this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
321 lines
8.4 KiB
C
321 lines
8.4 KiB
C
/*
|
|
* 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_
|
|
|
|
#include <stdio_dev.h>
|
|
|
|
struct udevice;
|
|
|
|
/**
|
|
* struct video_uc_platdata - 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_platdata(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.
|
|
*/
|
|
struct video_uc_platdata {
|
|
uint align;
|
|
uint size;
|
|
ulong base;
|
|
ulong copy_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
|
|
* @copy_fb: Copy of the frame buffer to keep up to date; see struct
|
|
* video_uc_platdata
|
|
* @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;
|
|
void *copy_fb;
|
|
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);
|
|
|
|
#ifdef CONFIG_DM_VIDEO
|
|
/**
|
|
* video_clear() - Clear a device's frame buffer to background color.
|
|
*
|
|
* @dev: Device to clear
|
|
* @return 0
|
|
*/
|
|
int video_clear(struct udevice *dev);
|
|
#endif /* CONFIG_DM_VIDEO */
|
|
|
|
/**
|
|
* 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);
|
|
|
|
#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);
|
|
#else
|
|
static inline int video_sync_copy(struct udevice *dev, void *from, void *to)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#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
|