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);
59 #if defined CONFIG_MPC823
61 * LCD controller stucture for MPC823 CPU
63 typedef struct vidinfo {
64 ushort vl_col; /* Number of columns (i.e. 640) */
65 ushort vl_row; /* Number of rows (i.e. 480) */
66 ushort vl_width; /* Width of display area in millimeters */
67 ushort vl_height; /* Height of display area in millimeters */
69 /* LCD configuration register */
70 u_char vl_clkp; /* Clock polarity */
71 u_char vl_oep; /* Output Enable polarity */
72 u_char vl_hsp; /* Horizontal Sync polarity */
73 u_char vl_vsp; /* Vertical Sync polarity */
74 u_char vl_dp; /* Data polarity */
75 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
76 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
77 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
78 u_char vl_clor; /* Color, 0 = mono, 1 = color */
79 u_char vl_tft; /* 0 = passive, 1 = TFT */
81 /* Horizontal control register. Timing from data sheet */
82 ushort vl_wbl; /* Wait between lines */
84 /* Vertical control register */
85 u_char vl_vpw; /* Vertical sync pulse width */
86 u_char vl_lcdac; /* LCD AC timing */
87 u_char vl_wbf; /* Wait between frames */
90 #elif defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS
92 * PXA LCD DMA descriptor
94 struct pxafb_dma_descriptor {
95 u_long fdadr; /* Frame descriptor address register */
96 u_long fsadr; /* Frame source address register */
97 u_long fidr; /* Frame ID register */
98 u_long ldcmd; /* Command register */
114 /* DMA descriptors */
115 struct pxafb_dma_descriptor * dmadesc_fblow;
116 struct pxafb_dma_descriptor * dmadesc_fbhigh;
117 struct pxafb_dma_descriptor * dmadesc_palette;
119 u_long screen; /* physical address of frame buffer */
120 u_long palette; /* physical address of palette memory */
125 * LCD controller stucture for PXA CPU
127 typedef struct vidinfo {
128 ushort vl_col; /* Number of columns (i.e. 640) */
129 ushort vl_row; /* Number of rows (i.e. 480) */
130 ushort vl_width; /* Width of display area in millimeters */
131 ushort vl_height; /* Height of display area in millimeters */
133 /* LCD configuration register */
134 u_char vl_clkp; /* Clock polarity */
135 u_char vl_oep; /* Output Enable polarity */
136 u_char vl_hsp; /* Horizontal Sync polarity */
137 u_char vl_vsp; /* Vertical Sync polarity */
138 u_char vl_dp; /* Data polarity */
139 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
140 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
141 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
142 u_char vl_clor; /* Color, 0 = mono, 1 = color */
143 u_char vl_tft; /* 0 = passive, 1 = TFT */
145 /* Horizontal control register. Timing from data sheet */
146 ushort vl_hpw; /* Horz sync pulse width */
147 u_char vl_blw; /* Wait before of line */
148 u_char vl_elw; /* Wait end of line */
150 /* Vertical control register. */
151 u_char vl_vpw; /* Vertical sync pulse width */
152 u_char vl_bfw; /* Wait before of frame */
153 u_char vl_efw; /* Wait end of frame */
155 /* PXA LCD controller params */
156 struct pxafb_info pxa;
159 #elif defined(CONFIG_ATMEL_LCD)
161 typedef struct vidinfo {
162 ushort vl_col; /* Number of columns (i.e. 640) */
163 ushort vl_row; /* Number of rows (i.e. 480) */
164 u_long vl_clk; /* pixel clock in ps */
166 /* LCD configuration register */
167 u_long vl_sync; /* Horizontal / vertical sync */
168 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
169 u_long vl_tft; /* 0 = passive, 1 = TFT */
170 u_long vl_cont_pol_low; /* contrast polarity is low */
172 /* Horizontal control register. */
173 u_long vl_hsync_len; /* Length of horizontal sync */
174 u_long vl_left_margin; /* Time from sync to picture */
175 u_long vl_right_margin; /* Time from picture to sync */
177 /* Vertical control register. */
178 u_long vl_vsync_len; /* Length of vertical sync */
179 u_long vl_upper_margin; /* Time from sync to picture */
180 u_long vl_lower_margin; /* Time from picture to sync */
182 u_long mmio; /* Memory mapped registers */
187 typedef struct vidinfo {
188 ushort vl_col; /* Number of columns (i.e. 160) */
189 ushort vl_row; /* Number of rows (i.e. 100) */
191 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
193 ushort *cmap; /* Pointer to the colormap */
195 void *priv; /* Pointer to driver-specific data */
198 #endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 or CONFIG_ATMEL_LCD */
200 extern vidinfo_t panel_info;
202 /* Video functions */
204 #if defined(CONFIG_RBC823)
205 void lcd_disable (void);
209 /* int lcd_init (void *lcdbase); */
210 void lcd_putc (const char c);
211 void lcd_puts (const char *s);
212 void lcd_printf (const char *fmt, ...);
213 void lcd_clear(void);
214 int lcd_display_bitmap(ulong bmp_image, int x, int y);
216 /* Allow boards to customize the information displayed */
217 void lcd_show_board_info(void);
219 /************************************************************************/
220 /* ** BITMAP DISPLAY SUPPORT */
221 /************************************************************************/
222 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
223 # include <bmp_layout.h>
224 # include <asm/byteorder.h>
228 * Information about displays we are using. This is for configuring
229 * the LCD controller and memory allocation. Someone has to know what
230 * is connected, as we can't autodetect anything.
232 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
233 #define CONFIG_SYS_LOW 1 /* Pins are active low */
235 #define LCD_MONOCHROME 0
239 #define LCD_COLOR16 4
241 /*----------------------------------------------------------------------*/
242 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
243 # define LCD_INFO_X 0
244 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
245 #elif defined(CONFIG_LCD_LOGO)
246 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
247 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
249 # define LCD_INFO_X (VIDEO_FONT_WIDTH)
250 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
253 /* Default to 8bpp if bit depth not specified */
255 # define LCD_BPP LCD_COLOR8
261 /* Calculate nr. of bits per pixel and nr. of colors */
262 #define NBITS(bit_code) (1 << (bit_code))
263 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
265 /************************************************************************/
266 /* ** CONSOLE CONSTANTS */
267 /************************************************************************/
268 #if LCD_BPP == LCD_MONOCHROME
271 * Simple black/white definitions
273 # define CONSOLE_COLOR_BLACK 0
274 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
276 #elif LCD_BPP == LCD_COLOR8
279 * 8bpp color definitions
281 # define CONSOLE_COLOR_BLACK 0
282 # define CONSOLE_COLOR_RED 1
283 # define CONSOLE_COLOR_GREEN 2
284 # define CONSOLE_COLOR_YELLOW 3
285 # define CONSOLE_COLOR_BLUE 4
286 # define CONSOLE_COLOR_MAGENTA 5
287 # define CONSOLE_COLOR_CYAN 6
288 # define CONSOLE_COLOR_GREY 14
289 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
294 * 16bpp color definitions
296 # define CONSOLE_COLOR_BLACK 0x0000
297 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
299 #endif /* color definitions */
301 /************************************************************************/
303 # define PAGE_SIZE 4096
306 /************************************************************************/
307 /* ** CONSOLE DEFINITIONS & FUNCTIONS */
308 /************************************************************************/
309 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
310 # define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
313 # define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
316 #define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
317 #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
318 #define CONSOLE_ROW_FIRST (lcd_console_address)
319 #define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
320 #define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
322 #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
323 #define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
325 #if LCD_BPP == LCD_MONOCHROME
326 # define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
327 (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
328 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
329 # define COLOR_MASK(c) (c)
331 # error Unsupported LCD BPP.
334 /************************************************************************/