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/*
* 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
* @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
* @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;
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;
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);
/**
* 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);
#endif /* CONFIG_DM_VIDEO */
#ifndef CONFIG_DM_VIDEO
/* Video functions */
struct stdio_dev;
int video_init(void *videobase);
void video_putc(struct stdio_dev *dev, const char c);
void video_puts(struct stdio_dev *dev, const char *s);
/**
* 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
#endif /* CONFIG_DM_VIDEO */
#endif
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