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;
47 #if defined CONFIG_MPC823
49 * LCD controller stucture for MPC823 CPU
51 typedef struct vidinfo {
52 ushort vl_col; /* Number of columns (i.e. 640) */
53 ushort vl_row; /* Number of rows (i.e. 480) */
54 ushort vl_width; /* Width of display area in millimeters */
55 ushort vl_height; /* Height of display area in millimeters */
57 /* LCD configuration register */
58 u_char vl_clkp; /* Clock polarity */
59 u_char vl_oep; /* Output Enable polarity */
60 u_char vl_hsp; /* Horizontal Sync polarity */
61 u_char vl_vsp; /* Vertical Sync polarity */
62 u_char vl_dp; /* Data polarity */
63 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
64 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
65 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
66 u_char vl_clor; /* Color, 0 = mono, 1 = color */
67 u_char vl_tft; /* 0 = passive, 1 = TFT */
69 /* Horizontal control register. Timing from data sheet */
70 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 */
78 extern vidinfo_t panel_info;
80 #elif defined CONFIG_PXA250
82 * PXA LCD DMA descriptor
84 struct pxafb_dma_descriptor {
85 u_long fdadr; /* Frame descriptor address register */
86 u_long fsadr; /* Frame source address register */
87 u_long fidr; /* Frame ID register */
88 u_long ldcmd; /* Command register */
104 /* DMA descriptors */
105 struct pxafb_dma_descriptor * dmadesc_fblow;
106 struct pxafb_dma_descriptor * dmadesc_fbhigh;
107 struct pxafb_dma_descriptor * dmadesc_palette;
109 u_long screen; /* physical address of frame buffer */
110 u_long palette; /* physical address of palette memory */
115 * LCD controller stucture for PXA CPU
117 typedef struct vidinfo {
118 ushort vl_col; /* Number of columns (i.e. 640) */
119 ushort vl_row; /* Number of rows (i.e. 480) */
120 ushort vl_width; /* Width of display area in millimeters */
121 ushort vl_height; /* Height of display area in millimeters */
123 /* LCD configuration register */
124 u_char vl_clkp; /* Clock polarity */
125 u_char vl_oep; /* Output Enable polarity */
126 u_char vl_hsp; /* Horizontal Sync polarity */
127 u_char vl_vsp; /* Vertical Sync polarity */
128 u_char vl_dp; /* Data polarity */
129 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
130 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
131 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
132 u_char vl_clor; /* Color, 0 = mono, 1 = color */
133 u_char vl_tft; /* 0 = passive, 1 = TFT */
135 /* Horizontal control register. Timing from data sheet */
136 ushort vl_hpw; /* Horz sync pulse width */
137 u_char vl_blw; /* Wait before of line */
138 u_char vl_elw; /* Wait end of line */
140 /* Vertical control register. */
141 u_char vl_vpw; /* Vertical sync pulse width */
142 u_char vl_bfw; /* Wait before of frame */
143 u_char vl_efw; /* Wait end of frame */
145 /* PXA LCD controller params */
146 struct pxafb_info pxa;
149 extern vidinfo_t panel_info;
151 #elif defined(CONFIG_MCC200)
152 typedef struct vidinfo {
153 ushort vl_col; /* Number of columns (i.e. 160) */
154 ushort vl_row; /* Number of rows (i.e. 100) */
156 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
158 #endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 */
160 /* Video functions */
162 #if defined(CONFIG_RBC823)
163 void lcd_disable (void);
167 /* int lcd_init (void *lcdbase); */
168 void lcd_putc (const char c);
169 void lcd_puts (const char *s);
170 void lcd_printf (const char *fmt, ...);
173 /************************************************************************/
174 /* ** BITMAP DISPLAY SUPPORT */
175 /************************************************************************/
176 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
177 # include <bmp_layout.h>
178 # include <asm/byteorder.h>
182 * Information about displays we are using. This is for configuring
183 * the LCD controller and memory allocation. Someone has to know what
184 * is connected, as we can't autodetect anything.
186 #define CFG_HIGH 0 /* Pins are active high */
187 #define CFG_LOW 1 /* Pins are active low */
189 #define LCD_MONOCHROME 0
193 #define LCD_COLOR16 4
195 /*----------------------------------------------------------------------*/
196 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
197 # define LCD_INFO_X 0
198 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
199 #elif defined(CONFIG_LCD_LOGO)
200 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
201 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
203 # define LCD_INFO_X (VIDEO_FONT_WIDTH)
204 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
207 /* Default to 8bpp if bit depth not specified */
209 # define LCD_BPP LCD_COLOR8
215 /* Calculate nr. of bits per pixel and nr. of colors */
216 #define NBITS(bit_code) (1 << (bit_code))
217 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
219 /************************************************************************/
220 /* ** CONSOLE CONSTANTS */
221 /************************************************************************/
222 #if LCD_BPP == LCD_MONOCHROME
225 * Simple black/white definitions
227 # define CONSOLE_COLOR_BLACK 0
228 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
230 #elif LCD_BPP == LCD_COLOR8
233 * 8bpp color definitions
235 # define CONSOLE_COLOR_BLACK 0
236 # define CONSOLE_COLOR_RED 1
237 # define CONSOLE_COLOR_GREEN 2
238 # define CONSOLE_COLOR_YELLOW 3
239 # define CONSOLE_COLOR_BLUE 4
240 # define CONSOLE_COLOR_MAGENTA 5
241 # define CONSOLE_COLOR_CYAN 6
242 # define CONSOLE_COLOR_GREY 14
243 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
248 * 16bpp color definitions
250 # define CONSOLE_COLOR_BLACK 0x0000
251 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
253 #endif /* color definitions */
255 /************************************************************************/
257 # define PAGE_SIZE 4096
260 /************************************************************************/
261 /* ** CONSOLE DEFINITIONS & FUNCTIONS */
262 /************************************************************************/
263 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
264 # define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
267 # define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
270 #define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
271 #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
272 #define CONSOLE_ROW_FIRST (lcd_console_address)
273 #define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
274 #define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
276 #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
277 #define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
279 #if LCD_BPP == LCD_MONOCHROME
280 # define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
281 (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
282 #elif LCD_BPP == LCD_COLOR8
283 # define COLOR_MASK(c) (c)
285 # error Unsupported LCD BPP.
288 /************************************************************************/