2 * MPC823 and PXA LCD Controller
4 * Modeled after video interface by Paolo Scaffardi
8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
10 * See file CREDITS for list of people who contributed to this
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.
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.
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,
32 extern char lcd_is_enabled;
34 extern int lcd_line_length;
35 extern int lcd_color_fg;
36 extern int lcd_color_bg;
39 * Frame buffer memory information
41 extern void *lcd_base; /* Start of framebuffer memory */
42 extern void *lcd_console_address; /* Start of console buffer */
44 extern short console_col;
45 extern short console_row;
46 extern struct vidinfo panel_info;
48 extern void lcd_ctrl_init (void *lcdbase);
49 extern void lcd_enable (void);
51 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
52 extern void lcd_setcolreg (ushort regno,
53 ushort red, ushort green, ushort blue);
54 extern void lcd_initcolregs (void);
56 /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
57 extern struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp);
60 * Set whether we need to flush the dcache when changing the LCD image. This
63 * @param flush non-zero to flush cache after update, 0 to skip
65 void lcd_set_flush_dcache(int flush);
67 #if defined CONFIG_MPC823
69 * LCD controller stucture for MPC823 CPU
71 typedef struct vidinfo {
72 ushort vl_col; /* Number of columns (i.e. 640) */
73 ushort vl_row; /* Number of rows (i.e. 480) */
74 ushort vl_width; /* Width of display area in millimeters */
75 ushort vl_height; /* Height of display area in millimeters */
77 /* LCD configuration register */
78 u_char vl_clkp; /* Clock polarity */
79 u_char vl_oep; /* Output Enable polarity */
80 u_char vl_hsp; /* Horizontal Sync polarity */
81 u_char vl_vsp; /* Vertical Sync polarity */
82 u_char vl_dp; /* Data polarity */
83 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
84 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
85 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
86 u_char vl_clor; /* Color, 0 = mono, 1 = color */
87 u_char vl_tft; /* 0 = passive, 1 = TFT */
89 /* Horizontal control register. Timing from data sheet */
90 ushort vl_wbl; /* Wait between lines */
92 /* Vertical control register */
93 u_char vl_vpw; /* Vertical sync pulse width */
94 u_char vl_lcdac; /* LCD AC timing */
95 u_char vl_wbf; /* Wait between frames */
98 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
99 defined CONFIG_CPU_MONAHANS
101 * PXA LCD DMA descriptor
103 struct pxafb_dma_descriptor {
104 u_long fdadr; /* Frame descriptor address register */
105 u_long fsadr; /* Frame source address register */
106 u_long fidr; /* Frame ID register */
107 u_long ldcmd; /* Command register */
123 /* DMA descriptors */
124 struct pxafb_dma_descriptor * dmadesc_fblow;
125 struct pxafb_dma_descriptor * dmadesc_fbhigh;
126 struct pxafb_dma_descriptor * dmadesc_palette;
128 u_long screen; /* physical address of frame buffer */
129 u_long palette; /* physical address of palette memory */
134 * LCD controller stucture for PXA CPU
136 typedef struct vidinfo {
137 ushort vl_col; /* Number of columns (i.e. 640) */
138 ushort vl_row; /* Number of rows (i.e. 480) */
139 ushort vl_width; /* Width of display area in millimeters */
140 ushort vl_height; /* Height of display area in millimeters */
142 /* LCD configuration register */
143 u_char vl_clkp; /* Clock polarity */
144 u_char vl_oep; /* Output Enable polarity */
145 u_char vl_hsp; /* Horizontal Sync polarity */
146 u_char vl_vsp; /* Vertical Sync polarity */
147 u_char vl_dp; /* Data polarity */
148 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
149 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
150 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
151 u_char vl_clor; /* Color, 0 = mono, 1 = color */
152 u_char vl_tft; /* 0 = passive, 1 = TFT */
154 /* Horizontal control register. Timing from data sheet */
155 ushort vl_hpw; /* Horz sync pulse width */
156 u_char vl_blw; /* Wait before of line */
157 u_char vl_elw; /* Wait end of line */
159 /* Vertical control register. */
160 u_char vl_vpw; /* Vertical sync pulse width */
161 u_char vl_bfw; /* Wait before of frame */
162 u_char vl_efw; /* Wait end of frame */
164 /* PXA LCD controller params */
165 struct pxafb_info pxa;
168 #elif defined(CONFIG_ATMEL_LCD)
170 typedef struct vidinfo {
171 ushort vl_col; /* Number of columns (i.e. 640) */
172 ushort vl_row; /* Number of rows (i.e. 480) */
173 u_long vl_clk; /* pixel clock in ps */
175 /* LCD configuration register */
176 u_long vl_sync; /* Horizontal / vertical sync */
177 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
178 u_long vl_tft; /* 0 = passive, 1 = TFT */
179 u_long vl_cont_pol_low; /* contrast polarity is low */
181 /* Horizontal control register. */
182 u_long vl_hsync_len; /* Length of horizontal sync */
183 u_long vl_left_margin; /* Time from sync to picture */
184 u_long vl_right_margin; /* Time from picture to sync */
186 /* Vertical control register. */
187 u_long vl_vsync_len; /* Length of vertical sync */
188 u_long vl_upper_margin; /* Time from sync to picture */
189 u_long vl_lower_margin; /* Time from picture to sync */
191 u_long mmio; /* Memory mapped registers */
196 typedef struct vidinfo {
197 ushort vl_col; /* Number of columns (i.e. 160) */
198 ushort vl_row; /* Number of rows (i.e. 100) */
200 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
202 ushort *cmap; /* Pointer to the colormap */
204 void *priv; /* Pointer to driver-specific data */
207 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_MCC200, CONFIG_ATMEL_LCD */
209 extern vidinfo_t panel_info;
211 /* Video functions */
213 #if defined(CONFIG_RBC823)
214 void lcd_disable (void);
218 /* int lcd_init (void *lcdbase); */
219 void lcd_putc (const char c);
220 void lcd_puts (const char *s);
221 void lcd_printf (const char *fmt, ...);
222 void lcd_clear(void);
223 int lcd_display_bitmap(ulong bmp_image, int x, int y);
224 int lcd_get_pixel_width(void);
225 int lcd_get_pixel_height(void);
226 int lcd_get_screen_rows(void);
227 int lcd_get_screen_columns(void);
228 void lcd_position_cursor(unsigned col, unsigned row);
230 /* Allow boards to customize the information displayed */
231 void lcd_show_board_info(void);
233 /* Return the size of the LCD frame buffer, and the line length */
234 int lcd_get_size(int *line_length);
236 /************************************************************************/
237 /* ** BITMAP DISPLAY SUPPORT */
238 /************************************************************************/
239 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
240 # include <bmp_layout.h>
241 # include <asm/byteorder.h>
245 * Information about displays we are using. This is for configuring
246 * the LCD controller and memory allocation. Someone has to know what
247 * is connected, as we can't autodetect anything.
249 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
250 #define CONFIG_SYS_LOW 1 /* Pins are active low */
252 #define LCD_MONOCHROME 0
256 #define LCD_COLOR16 4
258 /*----------------------------------------------------------------------*/
259 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
260 # define LCD_INFO_X 0
261 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
262 #elif defined(CONFIG_LCD_LOGO)
263 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
264 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
266 # define LCD_INFO_X (VIDEO_FONT_WIDTH)
267 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
270 /* Default to 8bpp if bit depth not specified */
272 # define LCD_BPP LCD_COLOR8
278 /* Calculate nr. of bits per pixel and nr. of colors */
279 #define NBITS(bit_code) (1 << (bit_code))
280 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
282 /************************************************************************/
283 /* ** CONSOLE CONSTANTS */
284 /************************************************************************/
285 #if LCD_BPP == LCD_MONOCHROME
288 * Simple black/white definitions
290 # define CONSOLE_COLOR_BLACK 0
291 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
293 #elif LCD_BPP == LCD_COLOR8
296 * 8bpp color definitions
298 # define CONSOLE_COLOR_BLACK 0
299 # define CONSOLE_COLOR_RED 1
300 # define CONSOLE_COLOR_GREEN 2
301 # define CONSOLE_COLOR_YELLOW 3
302 # define CONSOLE_COLOR_BLUE 4
303 # define CONSOLE_COLOR_MAGENTA 5
304 # define CONSOLE_COLOR_CYAN 6
305 # define CONSOLE_COLOR_GREY 14
306 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
311 * 16bpp color definitions
313 # define CONSOLE_COLOR_BLACK 0x0000
314 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
316 #endif /* color definitions */
318 /************************************************************************/
320 # define PAGE_SIZE 4096
323 /************************************************************************/
324 /* ** CONSOLE DEFINITIONS & FUNCTIONS */
325 /************************************************************************/
326 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
327 # define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
330 # define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
333 #define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
334 #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
335 #define CONSOLE_ROW_FIRST (lcd_console_address)
336 #define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
337 #define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
339 #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
340 #define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
342 #if LCD_BPP == LCD_MONOCHROME
343 # define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
344 (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
345 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
346 # define COLOR_MASK(c) (c)
348 # error Unsupported LCD BPP.
351 /************************************************************************/