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 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 65 * @colour_fg: Foreground colour (pixel value) 66 * @colour_bg: Background colour (pixel value) 67 * @flush_dcache: true to enable flushing of the data cache after 68 * the LCD is updated 69 * @cmap: Colour map for 8-bit-per-pixel displays 70 */ 71 struct video_priv { 72 /* Things set up by the driver: */ 73 ushort xsize; 74 ushort ysize; 75 ushort rot; 76 enum video_log2_bpp bpix; 77 const char *vidconsole_drv_name; 78 int font_size; 79 80 /* 81 * Things that are private to the uclass: don't use these in the 82 * driver 83 */ 84 void *fb; 85 int fb_size; 86 int line_length; 87 int colour_fg; 88 int colour_bg; 89 bool flush_dcache; 90 ushort *cmap; 91 }; 92 93 /* Placeholder - there are no video operations at present */ 94 struct video_ops { 95 }; 96 97 #define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops) 98 99 /** 100 * video_reserve() - Reserve frame-buffer memory for video devices 101 * 102 * Note: This function is for internal use. 103 * 104 * This uses the uclass platdata's @size and @align members to figure out 105 * a size and position for each frame buffer as part of the pre-relocation 106 * process of determining the post-relocation memory layout. 107 * 108 * gd->video_top is set to the initial value of *@addrp and gd->video_bottom 109 * is set to the final value. 110 * 111 * @addrp: On entry, the top of available memory. On exit, the new top, 112 * after allocating the required memory. 113 * @return 0 114 */ 115 int video_reserve(ulong *addrp); 116 117 /** 118 * video_sync() - Sync a device's frame buffer with its hardware 119 * 120 * Some frame buffers are cached or have a secondary frame buffer. This 121 * function syncs these up so that the current contents of the U-Boot frame 122 * buffer are displayed to the user. 123 * 124 * @dev: Device to sync 125 */ 126 void video_sync(struct udevice *vid); 127 128 /** 129 * video_sync_all() - Sync all devices' frame buffers with there hardware 130 * 131 * This calls video_sync() on all active video devices. 132 */ 133 void video_sync_all(void); 134 135 /** 136 * video_bmp_display() - Display a BMP file 137 * 138 * @dev: Device to display the bitmap on 139 * @bmp_image: Address of bitmap image to display 140 * @x: X position in pixels from the left 141 * @y: Y position in pixels from the top 142 * @align: true to adjust the coordinates to centre the image. If false 143 * the coordinates are used as is. If true: 144 * 145 * - if a coordinate is 0x7fff then the image will be centred in 146 * that direction 147 * - if a coordinate is -ve then it will be offset to the 148 * left/top of the centre by that many pixels 149 * - if a coordinate is positive it will be used unchnaged. 150 * @return 0 if OK, -ve on error 151 */ 152 int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y, 153 bool align); 154 155 /** 156 * video_get_xsize() - Get the width of the display in pixels 157 * 158 * @dev: Device to check 159 * @return device frame buffer width in pixels 160 */ 161 int video_get_xsize(struct udevice *dev); 162 163 /** 164 * video_get_ysize() - Get the height of the display in pixels 165 * 166 * @dev: Device to check 167 * @return device frame buffer height in pixels 168 */ 169 int video_get_ysize(struct udevice *dev); 170 171 /** 172 * Set whether we need to flush the dcache when changing the image. This 173 * defaults to off. 174 * 175 * @param flush non-zero to flush cache after update, 0 to skip 176 */ 177 void video_set_flush_dcache(struct udevice *dev, bool flush); 178 179 #endif /* CONFIG_DM_VIDEO */ 180 181 #ifndef CONFIG_DM_VIDEO 182 183 /* Video functions */ 184 185 struct stdio_dev; 186 187 int video_init(void *videobase); 188 void video_putc(struct stdio_dev *dev, const char c); 189 void video_puts(struct stdio_dev *dev, const char *s); 190 191 /** 192 * Display a BMP format bitmap on the screen 193 * 194 * @param bmp_image Address of BMP image 195 * @param x X position to draw image 196 * @param y Y position to draw image 197 */ 198 int video_display_bitmap(ulong bmp_image, int x, int y); 199 200 /** 201 * Get the width of the screen in pixels 202 * 203 * @return width of screen in pixels 204 */ 205 int video_get_pixel_width(void); 206 207 /** 208 * Get the height of the screen in pixels 209 * 210 * @return height of screen in pixels 211 */ 212 int video_get_pixel_height(void); 213 214 /** 215 * Get the number of text lines/rows on the screen 216 * 217 * @return number of rows 218 */ 219 int video_get_screen_rows(void); 220 221 /** 222 * Get the number of text columns on the screen 223 * 224 * @return number of columns 225 */ 226 int video_get_screen_columns(void); 227 228 /** 229 * Set the position of the text cursor 230 * 231 * @param col Column to place cursor (0 = left side) 232 * @param row Row to place cursor (0 = top line) 233 */ 234 void video_position_cursor(unsigned col, unsigned row); 235 236 /* Clear the display */ 237 void video_clear(void); 238 239 #if defined(CONFIG_FORMIKE) 240 int kwh043st20_f01_spi_startup(unsigned int bus, unsigned int cs, 241 unsigned int max_hz, unsigned int spi_mode); 242 #endif 243 #if defined(CONFIG_LG4573) 244 int lg4573_spi_startup(unsigned int bus, unsigned int cs, 245 unsigned int max_hz, unsigned int spi_mode); 246 #endif 247 248 /* 249 * video_get_info_str() - obtain a board string: type, speed, etc. 250 * 251 * This is called if CONFIG_CONSOLE_EXTRA_INFO is enabled. 252 * 253 * line_number: location to place info string beside logo 254 * info: buffer for info string (empty if nothing to display on this 255 * line) 256 */ 257 void video_get_info_str(int line_number, char *info); 258 259 #endif /* CONFIG_DM_VIDEO */ 260 261 #endif 262