lcd.h 10.0 KB

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  1. /*
  2. * MPC823 and PXA LCD Controller
  3. *
  4. * Modeled after video interface by Paolo Scaffardi
  5. *
  6. *
  7. * (C) Copyright 2001
  8. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  9. *
  10. * See file CREDITS for list of people who contributed to this
  11. * project.
  12. *
  13. * This program is free software; you can redistribute it and/or
  14. * modify it under the terms of the GNU General Public License as
  15. * published by the Free Software Foundation; either version 2 of
  16. * the License, or (at your option) any later version.
  17. *
  18. * This program is distributed in the hope that it will be useful,
  19. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  21. * GNU General Public License for more details.
  22. *
  23. * You should have received a copy of the GNU General Public License
  24. * along with this program; if not, write to the Free Software
  25. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  26. * MA 02111-1307 USA
  27. */
  28. #ifndef _LCD_H_
  29. #define _LCD_H_
  30. extern char lcd_is_enabled;
  31. extern int lcd_line_length;
  32. extern int lcd_color_fg;
  33. extern int lcd_color_bg;
  34. /*
  35. * Frame buffer memory information
  36. */
  37. extern void *lcd_base; /* Start of framebuffer memory */
  38. extern void *lcd_console_address; /* Start of console buffer */
  39. extern short console_col;
  40. extern short console_row;
  41. extern struct vidinfo panel_info;
  42. extern void lcd_ctrl_init (void *lcdbase);
  43. extern void lcd_enable (void);
  44. /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
  45. extern void lcd_setcolreg (ushort regno,
  46. ushort red, ushort green, ushort blue);
  47. extern void lcd_initcolregs (void);
  48. /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
  49. extern struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp);
  50. #if defined CONFIG_MPC823
  51. /*
  52. * LCD controller stucture for MPC823 CPU
  53. */
  54. typedef struct vidinfo {
  55. ushort vl_col; /* Number of columns (i.e. 640) */
  56. ushort vl_row; /* Number of rows (i.e. 480) */
  57. ushort vl_width; /* Width of display area in millimeters */
  58. ushort vl_height; /* Height of display area in millimeters */
  59. /* LCD configuration register */
  60. u_char vl_clkp; /* Clock polarity */
  61. u_char vl_oep; /* Output Enable polarity */
  62. u_char vl_hsp; /* Horizontal Sync polarity */
  63. u_char vl_vsp; /* Vertical Sync polarity */
  64. u_char vl_dp; /* Data polarity */
  65. u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
  66. u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
  67. u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
  68. u_char vl_clor; /* Color, 0 = mono, 1 = color */
  69. u_char vl_tft; /* 0 = passive, 1 = TFT */
  70. /* Horizontal control register. Timing from data sheet */
  71. ushort vl_wbl; /* Wait between lines */
  72. /* Vertical control register */
  73. u_char vl_vpw; /* Vertical sync pulse width */
  74. u_char vl_lcdac; /* LCD AC timing */
  75. u_char vl_wbf; /* Wait between frames */
  76. } vidinfo_t;
  77. #elif defined CONFIG_PXA250
  78. /*
  79. * PXA LCD DMA descriptor
  80. */
  81. struct pxafb_dma_descriptor {
  82. u_long fdadr; /* Frame descriptor address register */
  83. u_long fsadr; /* Frame source address register */
  84. u_long fidr; /* Frame ID register */
  85. u_long ldcmd; /* Command register */
  86. };
  87. /*
  88. * PXA LCD info
  89. */
  90. struct pxafb_info {
  91. /* Misc registers */
  92. u_long reg_lccr3;
  93. u_long reg_lccr2;
  94. u_long reg_lccr1;
  95. u_long reg_lccr0;
  96. u_long fdadr0;
  97. u_long fdadr1;
  98. /* DMA descriptors */
  99. struct pxafb_dma_descriptor * dmadesc_fblow;
  100. struct pxafb_dma_descriptor * dmadesc_fbhigh;
  101. struct pxafb_dma_descriptor * dmadesc_palette;
  102. u_long screen; /* physical address of frame buffer */
  103. u_long palette; /* physical address of palette memory */
  104. u_int palette_size;
  105. };
  106. /*
  107. * LCD controller stucture for PXA CPU
  108. */
  109. typedef struct vidinfo {
  110. ushort vl_col; /* Number of columns (i.e. 640) */
  111. ushort vl_row; /* Number of rows (i.e. 480) */
  112. ushort vl_width; /* Width of display area in millimeters */
  113. ushort vl_height; /* Height of display area in millimeters */
  114. /* LCD configuration register */
  115. u_char vl_clkp; /* Clock polarity */
  116. u_char vl_oep; /* Output Enable polarity */
  117. u_char vl_hsp; /* Horizontal Sync polarity */
  118. u_char vl_vsp; /* Vertical Sync polarity */
  119. u_char vl_dp; /* Data polarity */
  120. u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
  121. u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
  122. u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
  123. u_char vl_clor; /* Color, 0 = mono, 1 = color */
  124. u_char vl_tft; /* 0 = passive, 1 = TFT */
  125. /* Horizontal control register. Timing from data sheet */
  126. ushort vl_hpw; /* Horz sync pulse width */
  127. u_char vl_blw; /* Wait before of line */
  128. u_char vl_elw; /* Wait end of line */
  129. /* Vertical control register. */
  130. u_char vl_vpw; /* Vertical sync pulse width */
  131. u_char vl_bfw; /* Wait before of frame */
  132. u_char vl_efw; /* Wait end of frame */
  133. /* PXA LCD controller params */
  134. struct pxafb_info pxa;
  135. } vidinfo_t;
  136. #elif defined(CONFIG_ATMEL_LCD)
  137. typedef struct vidinfo {
  138. u_long vl_col; /* Number of columns (i.e. 640) */
  139. u_long vl_row; /* Number of rows (i.e. 480) */
  140. u_long vl_clk; /* pixel clock in ps */
  141. /* LCD configuration register */
  142. u_long vl_sync; /* Horizontal / vertical sync */
  143. u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
  144. u_long vl_tft; /* 0 = passive, 1 = TFT */
  145. /* Horizontal control register. */
  146. u_long vl_hsync_len; /* Length of horizontal sync */
  147. u_long vl_left_margin; /* Time from sync to picture */
  148. u_long vl_right_margin; /* Time from picture to sync */
  149. /* Vertical control register. */
  150. u_long vl_vsync_len; /* Length of vertical sync */
  151. u_long vl_upper_margin; /* Time from sync to picture */
  152. u_long vl_lower_margin; /* Time from picture to sync */
  153. u_long mmio; /* Memory mapped registers */
  154. } vidinfo_t;
  155. #else
  156. typedef struct vidinfo {
  157. ushort vl_col; /* Number of columns (i.e. 160) */
  158. ushort vl_row; /* Number of rows (i.e. 100) */
  159. u_char vl_bpix; /* Bits per pixel, 0 = 1 */
  160. ushort *cmap; /* Pointer to the colormap */
  161. void *priv; /* Pointer to driver-specific data */
  162. } vidinfo_t;
  163. #endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 or CONFIG_ATMEL_LCD */
  164. extern vidinfo_t panel_info;
  165. /* Video functions */
  166. #if defined(CONFIG_RBC823)
  167. void lcd_disable (void);
  168. #endif
  169. /* int lcd_init (void *lcdbase); */
  170. void lcd_putc (const char c);
  171. void lcd_puts (const char *s);
  172. void lcd_printf (const char *fmt, ...);
  173. /* Allow boards to customize the information displayed */
  174. void lcd_show_board_info(void);
  175. /************************************************************************/
  176. /* ** BITMAP DISPLAY SUPPORT */
  177. /************************************************************************/
  178. #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
  179. # include <bmp_layout.h>
  180. # include <asm/byteorder.h>
  181. #endif
  182. /*
  183. * Information about displays we are using. This is for configuring
  184. * the LCD controller and memory allocation. Someone has to know what
  185. * is connected, as we can't autodetect anything.
  186. */
  187. #define CONFIG_SYS_HIGH 0 /* Pins are active high */
  188. #define CONFIG_SYS_LOW 1 /* Pins are active low */
  189. #define LCD_MONOCHROME 0
  190. #define LCD_COLOR2 1
  191. #define LCD_COLOR4 2
  192. #define LCD_COLOR8 3
  193. #define LCD_COLOR16 4
  194. /*----------------------------------------------------------------------*/
  195. #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
  196. # define LCD_INFO_X 0
  197. # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
  198. #elif defined(CONFIG_LCD_LOGO)
  199. # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
  200. # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
  201. #else
  202. # define LCD_INFO_X (VIDEO_FONT_WIDTH)
  203. # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
  204. #endif
  205. /* Default to 8bpp if bit depth not specified */
  206. #ifndef LCD_BPP
  207. # define LCD_BPP LCD_COLOR8
  208. #endif
  209. #ifndef LCD_DF
  210. # define LCD_DF 1
  211. #endif
  212. /* Calculate nr. of bits per pixel and nr. of colors */
  213. #define NBITS(bit_code) (1 << (bit_code))
  214. #define NCOLORS(bit_code) (1 << NBITS(bit_code))
  215. /************************************************************************/
  216. /* ** CONSOLE CONSTANTS */
  217. /************************************************************************/
  218. #if LCD_BPP == LCD_MONOCHROME
  219. /*
  220. * Simple black/white definitions
  221. */
  222. # define CONSOLE_COLOR_BLACK 0
  223. # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
  224. #elif LCD_BPP == LCD_COLOR8
  225. /*
  226. * 8bpp color definitions
  227. */
  228. # define CONSOLE_COLOR_BLACK 0
  229. # define CONSOLE_COLOR_RED 1
  230. # define CONSOLE_COLOR_GREEN 2
  231. # define CONSOLE_COLOR_YELLOW 3
  232. # define CONSOLE_COLOR_BLUE 4
  233. # define CONSOLE_COLOR_MAGENTA 5
  234. # define CONSOLE_COLOR_CYAN 6
  235. # define CONSOLE_COLOR_GREY 14
  236. # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
  237. #else
  238. /*
  239. * 16bpp color definitions
  240. */
  241. # define CONSOLE_COLOR_BLACK 0x0000
  242. # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
  243. #endif /* color definitions */
  244. /************************************************************************/
  245. #ifndef PAGE_SIZE
  246. # define PAGE_SIZE 4096
  247. #endif
  248. /************************************************************************/
  249. /* ** CONSOLE DEFINITIONS & FUNCTIONS */
  250. /************************************************************************/
  251. #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  252. # define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  253. / VIDEO_FONT_HEIGHT)
  254. #else
  255. # define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  256. #endif
  257. #define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
  258. #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
  259. #define CONSOLE_ROW_FIRST (lcd_console_address)
  260. #define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
  261. #define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
  262. - CONSOLE_ROW_SIZE)
  263. #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
  264. #define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  265. #if LCD_BPP == LCD_MONOCHROME
  266. # define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
  267. (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
  268. #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
  269. # define COLOR_MASK(c) (c)
  270. #else
  271. # error Unsupported LCD BPP.
  272. #endif
  273. /************************************************************************/
  274. #endif /* _LCD_H_ */