include/video.h

   1 /*
   2  * Video uclass and legacy implementation
   3  *
   4  * Copyright (c) 2015 Google, Inc
   5  *
   6  * MPC823 Video Controller
   7  * =======================
   8  * (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
   9  * AIRVENT SAM s.p.a - RIMINI(ITALY)
  10  *
  11  */
  12
  13 #ifndef _VIDEO_H_
  14 #define _VIDEO_H_
  15
  16 #ifdef CONFIG_DM_VIDEO
  17
  18 #include <stdio_dev.h>
  19
  20 struct video_uc_platdata {
  21         uint align;
  22         uint size;
  23         ulong base;
  24 };
  25
  26 enum video_polarity {
  27         VIDEO_ACTIVE_HIGH,      /* Pins are active high */
  28         VIDEO_ACTIVE_LOW,       /* Pins are active low */
  29 };
  30
  31 /*
  32  * Bits per pixel selector. Each value n is such that the bits-per-pixel is
  33  * 2 ^ n
  34  */
  35 enum video_log2_bpp {
  36         VIDEO_BPP1      = 0,
  37         VIDEO_BPP2,
  38         VIDEO_BPP4,
  39         VIDEO_BPP8,
  40         VIDEO_BPP16,
  41         VIDEO_BPP32,
  42 };
  43
  44 /*
  45  * Convert enum video_log2_bpp to bytes and bits. Note we omit the outer
  46  * brackets to allow multiplication by fractional pixels.
  47  */
  48 #define VNBYTES(bpix)   (1 << (bpix)) / 8
  49
  50 #define VNBITS(bpix)    (1 << (bpix))
  51
  52 /**
  53  * struct video_priv - Device information used by the video uclass
  54  *
  55  * @xsize:      Number of pixel columns (e.g. 1366)
  56  * @ysize:      Number of pixels rows (e.g.. 768)
  57  * @rot:        Display rotation (0=none, 1=90 degrees clockwise, etc.)
  58  * @bpix:       Encoded bits per pixel (enum video_log2_bpp)
  59  * @vidconsole_drv_name:        Driver to use for the text console, NULL to
  60  *              select automatically
  61  * @font_size:  Font size in pixels (0 to use a default value)
  62  * @fb:         Frame buffer
  63  * @fb_size:    Frame buffer size
  64  * @line_length:        Length of each frame buffer line, in bytes. This can be
  65  *              set by the driver, but if not, the uclass will set it after
  66  *              probing
  67  * @colour_fg:  Foreground colour (pixel value)
  68  * @colour_bg:  Background colour (pixel value)
  69  * @flush_dcache:       true to enable flushing of the data cache after
  70  *              the LCD is updated
  71  * @cmap:       Colour map for 8-bit-per-pixel displays
  72  * @fg_col_idx: Foreground color code (bit 3 = bold, bit 0-2 = color)
  73  * @bg_col_idx: Background color code (bit 3 = bold, bit 0-2 = color)
  74  */
  75 struct video_priv {
  76         /* Things set up by the driver: */
  77         ushort xsize;
  78         ushort ysize;
  79         ushort rot;
  80         enum video_log2_bpp bpix;
  81         const char *vidconsole_drv_name;
  82         int font_size;
  83
  84         /*
  85          * Things that are private to the uclass: don't use these in the
  86          * driver
  87          */
  88         void *fb;
  89         int fb_size;
  90         int line_length;
  91         u32 colour_fg;
  92         u32 colour_bg;
  93         bool flush_dcache;
  94         ushort *cmap;
  95         u8 fg_col_idx;
  96         u8 bg_col_idx;
  97 };
  98
  99 /* Placeholder - there are no video operations at present */
 100 struct video_ops {
 101 };
 102
 103 #define video_get_ops(dev)        ((struct video_ops *)(dev)->driver->ops)
 104
 105 /**
 106  * video_reserve() - Reserve frame-buffer memory for video devices
 107  *
 108  * Note: This function is for internal use.
 109  *
 110  * This uses the uclass platdata's @size and @align members to figure out
 111  * a size and position for each frame buffer as part of the pre-relocation
 112  * process of determining the post-relocation memory layout.
 113  *
 114  * gd->video_top is set to the initial value of *@addrp and gd->video_bottom
 115  * is set to the final value.
 116  *
 117  * @addrp:      On entry, the top of available memory. On exit, the new top,
 118  *              after allocating the required memory.
 119  * @return 0
 120  */
 121 int video_reserve(ulong *addrp);
 122
 123 /**
 124  * video_clear() - Clear a device's frame buffer to background color.
 125  *
 126  * @dev:        Device to clear
 127  * @return 0
 128  */
 129 int video_clear(struct udevice *dev);
 130
 131 /**
 132  * video_sync() - Sync a device's frame buffer with its hardware
 133  *
 134  * Some frame buffers are cached or have a secondary frame buffer. This
 135  * function syncs these up so that the current contents of the U-Boot frame
 136  * buffer are displayed to the user.
 137  *
 138  * @dev:        Device to sync
 139  * @force:      True to force a sync even if there was one recently (this is
 140  *              very expensive on sandbox)
 141  */
 142 void video_sync(struct udevice *vid, bool force);
 143
 144 /**
 145  * video_sync_all() - Sync all devices' frame buffers with there hardware
 146  *
 147  * This calls video_sync() on all active video devices.
 148  */
 149 void video_sync_all(void);
 150
 151 /**
 152  * video_bmp_display() - Display a BMP file
 153  *
 154  * @dev:        Device to display the bitmap on
 155  * @bmp_image:  Address of bitmap image to display
 156  * @x:          X position in pixels from the left
 157  * @y:          Y position in pixels from the top
 158  * @align:      true to adjust the coordinates to centre the image. If false
 159  *              the coordinates are used as is. If true:
 160  *
 161  *              - if a coordinate is 0x7fff then the image will be centred in
 162  *                that direction
 163  *              - if a coordinate is -ve then it will be offset to the
 164  *                left/top of the centre by that many pixels
 165  *              - if a coordinate is positive it will be used unchnaged.
 166  * @return 0 if OK, -ve on error
 167  */
 168 int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
 169                       bool align);
 170
 171 /**
 172  * video_get_xsize() - Get the width of the display in pixels
 173  *
 174  * @dev:        Device to check
 175  * @return device frame buffer width in pixels
 176  */
 177 int video_get_xsize(struct udevice *dev);
 178
 179 /**
 180  * video_get_ysize() - Get the height of the display in pixels
 181  *
 182  * @dev:        Device to check
 183  * @return device frame buffer height in pixels
 184  */
 185 int video_get_ysize(struct udevice *dev);
 186
 187 /**
 188  * Set whether we need to flush the dcache when changing the image. This
 189  * defaults to off.
 190  *
 191  * @param flush         non-zero to flush cache after update, 0 to skip
 192  */
 193 void video_set_flush_dcache(struct udevice *dev, bool flush);
 194
 195 /**
 196  * Set default colors and attributes
 197  *
 198  * @dev:        video device
 199  * @invert      true to invert colours
 200  */
 201 void video_set_default_colors(struct udevice *dev, bool invert);
 202
 203 #endif /* CONFIG_DM_VIDEO */
 204
 205 #ifndef CONFIG_DM_VIDEO
 206
 207 /* Video functions */
 208
 209 /**
 210  * Display a BMP format bitmap on the screen
 211  *
 212  * @param bmp_image     Address of BMP image
 213  * @param x             X position to draw image
 214  * @param y             Y position to draw image
 215  */
 216 int video_display_bitmap(ulong bmp_image, int x, int y);
 217
 218 /**
 219  * Get the width of the screen in pixels
 220  *
 221  * @return width of screen in pixels
 222  */
 223 int video_get_pixel_width(void);
 224
 225 /**
 226  * Get the height of the screen in pixels
 227  *
 228  * @return height of screen in pixels
 229  */
 230 int video_get_pixel_height(void);
 231
 232 /**
 233  * Get the number of text lines/rows on the screen
 234  *
 235  * @return number of rows
 236  */
 237 int video_get_screen_rows(void);
 238
 239 /**
 240  * Get the number of text columns on the screen
 241  *
 242  * @return number of columns
 243  */
 244 int video_get_screen_columns(void);
 245
 246 /**
 247  * Set the position of the text cursor
 248  *
 249  * @param col   Column to place cursor (0 = left side)
 250  * @param row   Row to place cursor (0 = top line)
 251  */
 252 void video_position_cursor(unsigned col, unsigned row);
 253
 254 /* Clear the display */
 255 void video_clear(void);
 256
 257 #if defined(CONFIG_FORMIKE)
 258 int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs,
 259         unsigned int max_hz, unsigned int spi_mode);
 260 #endif
 261 #if defined(CONFIG_LG4573)
 262 int lg4573_spi_startup(unsigned int bus, unsigned int cs,
 263         unsigned int max_hz, unsigned int spi_mode);
 264 #endif
 265
 266 /*
 267  * video_get_info_str() - obtain a board string: type, speed, etc.
 268  *
 269  * This is called if CONFIG_CONSOLE_EXTRA_INFO is enabled.
 270  *
 271  * line_number: location to place info string beside logo
 272  * info:        buffer for info string (empty if nothing to display on this
 273  * line)
 274  */
 275 void video_get_info_str(int line_number, char *info);
 276
 277 #endif /* !CONFIG_DM_VIDEO */
 278
 279 #endif