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);
58 extern int bmp_display(ulong addr, int x, int y);
61 * Set whether we need to flush the dcache when changing the LCD image. This
64 * @param flush non-zero to flush cache after update, 0 to skip
66 void lcd_set_flush_dcache(int flush);
68 #if defined CONFIG_MPC823
70 * LCD controller stucture for MPC823 CPU
72 typedef struct vidinfo {
73 ushort vl_col; /* Number of columns (i.e. 640) */
74 ushort vl_row; /* Number of rows (i.e. 480) */
75 ushort vl_width; /* Width of display area in millimeters */
76 ushort vl_height; /* Height of display area in millimeters */
78 /* LCD configuration register */
79 u_char vl_clkp; /* Clock polarity */
80 u_char vl_oep; /* Output Enable polarity */
81 u_char vl_hsp; /* Horizontal Sync polarity */
82 u_char vl_vsp; /* Vertical Sync polarity */
83 u_char vl_dp; /* Data polarity */
84 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
85 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
86 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
87 u_char vl_clor; /* Color, 0 = mono, 1 = color */
88 u_char vl_tft; /* 0 = passive, 1 = TFT */
90 /* Horizontal control register. Timing from data sheet */
91 ushort vl_wbl; /* Wait between lines */
93 /* Vertical control register */
94 u_char vl_vpw; /* Vertical sync pulse width */
95 u_char vl_lcdac; /* LCD AC timing */
96 u_char vl_wbf; /* Wait between frames */
99 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
100 defined CONFIG_CPU_MONAHANS
102 * PXA LCD DMA descriptor
104 struct pxafb_dma_descriptor {
105 u_long fdadr; /* Frame descriptor address register */
106 u_long fsadr; /* Frame source address register */
107 u_long fidr; /* Frame ID register */
108 u_long ldcmd; /* Command register */
124 /* DMA descriptors */
125 struct pxafb_dma_descriptor * dmadesc_fblow;
126 struct pxafb_dma_descriptor * dmadesc_fbhigh;
127 struct pxafb_dma_descriptor * dmadesc_palette;
129 u_long screen; /* physical address of frame buffer */
130 u_long palette; /* physical address of palette memory */
135 * LCD controller stucture for PXA CPU
137 typedef struct vidinfo {
138 ushort vl_col; /* Number of columns (i.e. 640) */
139 ushort vl_row; /* Number of rows (i.e. 480) */
140 ushort vl_width; /* Width of display area in millimeters */
141 ushort vl_height; /* Height of display area in millimeters */
143 /* LCD configuration register */
144 u_char vl_clkp; /* Clock polarity */
145 u_char vl_oep; /* Output Enable polarity */
146 u_char vl_hsp; /* Horizontal Sync polarity */
147 u_char vl_vsp; /* Vertical Sync polarity */
148 u_char vl_dp; /* Data polarity */
149 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
150 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
151 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
152 u_char vl_clor; /* Color, 0 = mono, 1 = color */
153 u_char vl_tft; /* 0 = passive, 1 = TFT */
155 /* Horizontal control register. Timing from data sheet */
156 ushort vl_hpw; /* Horz sync pulse width */
157 u_char vl_blw; /* Wait before of line */
158 u_char vl_elw; /* Wait end of line */
160 /* Vertical control register. */
161 u_char vl_vpw; /* Vertical sync pulse width */
162 u_char vl_bfw; /* Wait before of frame */
163 u_char vl_efw; /* Wait end of frame */
165 /* PXA LCD controller params */
166 struct pxafb_info pxa;
169 #elif defined(CONFIG_ATMEL_LCD) || defined(CONFIG_ATMEL_HLCD)
171 typedef struct vidinfo {
172 ushort vl_col; /* Number of columns (i.e. 640) */
173 ushort vl_row; /* Number of rows (i.e. 480) */
174 u_long vl_clk; /* pixel clock in ps */
176 /* LCD configuration register */
177 u_long vl_sync; /* Horizontal / vertical sync */
178 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
179 u_long vl_tft; /* 0 = passive, 1 = TFT */
180 u_long vl_cont_pol_low; /* contrast polarity is low */
181 u_long vl_clk_pol; /* clock polarity */
183 /* Horizontal control register. */
184 u_long vl_hsync_len; /* Length of horizontal sync */
185 u_long vl_left_margin; /* Time from sync to picture */
186 u_long vl_right_margin; /* Time from picture to sync */
188 /* Vertical control register. */
189 u_long vl_vsync_len; /* Length of vertical sync */
190 u_long vl_upper_margin; /* Time from sync to picture */
191 u_long vl_lower_margin; /* Time from picture to sync */
193 u_long mmio; /* Memory mapped registers */
196 #elif defined(CONFIG_EXYNOS_FB)
199 FIMD_RGB_INTERFACE = 1,
200 FIMD_CPU_INTERFACE = 2,
203 enum exynos_fb_rgb_mode_t {
210 typedef struct vidinfo {
211 ushort vl_col; /* Number of columns (i.e. 640) */
212 ushort vl_row; /* Number of rows (i.e. 480) */
213 ushort vl_width; /* Width of display area in millimeters */
214 ushort vl_height; /* Height of display area in millimeters */
216 /* LCD configuration register */
217 u_char vl_freq; /* Frequency */
218 u_char vl_clkp; /* Clock polarity */
219 u_char vl_oep; /* Output Enable polarity */
220 u_char vl_hsp; /* Horizontal Sync polarity */
221 u_char vl_vsp; /* Vertical Sync polarity */
222 u_char vl_dp; /* Data polarity */
223 u_char vl_bpix; /* Bits per pixel */
225 /* Horizontal control register. Timing from data sheet */
226 u_char vl_hspw; /* Horz sync pulse width */
227 u_char vl_hfpd; /* Wait before of line */
228 u_char vl_hbpd; /* Wait end of line */
230 /* Vertical control register. */
231 u_char vl_vspw; /* Vertical sync pulse width */
232 u_char vl_vfpd; /* Wait before of frame */
233 u_char vl_vbpd; /* Wait end of frame */
234 u_char vl_cmd_allow_len; /* Wait end of frame */
236 void (*cfg_gpio)(void);
237 void (*backlight_on)(unsigned int onoff);
238 void (*reset_lcd)(void);
239 void (*lcd_power_on)(void);
240 void (*cfg_ldo)(void);
241 void (*enable_ldo)(unsigned int onoff);
242 void (*mipi_power)(void);
243 void (*backlight_reset)(void);
246 unsigned int init_delay;
247 unsigned int power_on_delay;
248 unsigned int reset_delay;
249 unsigned int interface_mode;
250 unsigned int mipi_enabled;
251 unsigned int dp_enabled;
252 unsigned int cs_setup;
253 unsigned int wr_setup;
255 unsigned int wr_hold;
256 unsigned int logo_on;
257 unsigned int logo_width;
258 unsigned int logo_height;
259 unsigned long logo_addr;
260 unsigned int rgb_mode;
261 unsigned int resolution;
263 /* parent clock name(MPLL, EPLL or VPLL) */
264 unsigned int pclk_name;
265 /* ratio value for source clock from parent clock. */
266 unsigned int sclk_div;
268 unsigned int dual_lcd_enabled;
272 void init_panel_info(vidinfo_t *vid);
276 typedef struct vidinfo {
277 ushort vl_col; /* Number of columns (i.e. 160) */
278 ushort vl_row; /* Number of rows (i.e. 100) */
280 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
282 ushort *cmap; /* Pointer to the colormap */
284 void *priv; /* Pointer to driver-specific data */
287 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_MCC200, CONFIG_ATMEL_LCD */
289 extern vidinfo_t panel_info;
291 /* Video functions */
293 #if defined(CONFIG_RBC823)
294 void lcd_disable (void);
298 /* int lcd_init (void *lcdbase); */
299 void lcd_putc (const char c);
300 void lcd_puts (const char *s);
301 void lcd_printf (const char *fmt, ...);
302 void lcd_clear(void);
303 int lcd_display_bitmap(ulong bmp_image, int x, int y);
306 * Get the width of the LCD in pixels
308 * @return width of LCD in pixels
310 int lcd_get_pixel_width(void);
313 * Get the height of the LCD in pixels
315 * @return height of LCD in pixels
317 int lcd_get_pixel_height(void);
320 * Get the number of text lines/rows on the LCD
322 * @return number of rows
324 int lcd_get_screen_rows(void);
327 * Get the number of text columns on the LCD
329 * @return number of columns
331 int lcd_get_screen_columns(void);
334 * Set the position of the text cursor
336 * @param col Column to place cursor (0 = left side)
337 * @param row Row to place cursor (0 = top line)
339 void lcd_position_cursor(unsigned col, unsigned row);
341 /* Allow boards to customize the information displayed */
342 void lcd_show_board_info(void);
344 /* Return the size of the LCD frame buffer, and the line length */
345 int lcd_get_size(int *line_length);
347 /************************************************************************/
348 /* ** BITMAP DISPLAY SUPPORT */
349 /************************************************************************/
350 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
351 # include <bmp_layout.h>
352 # include <asm/byteorder.h>
356 * Information about displays we are using. This is for configuring
357 * the LCD controller and memory allocation. Someone has to know what
358 * is connected, as we can't autodetect anything.
360 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
361 #define CONFIG_SYS_LOW 1 /* Pins are active low */
363 #define LCD_MONOCHROME 0
367 #define LCD_COLOR16 4
369 /*----------------------------------------------------------------------*/
370 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
371 # define LCD_INFO_X 0
372 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
373 #elif defined(CONFIG_LCD_LOGO)
374 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
375 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
377 # define LCD_INFO_X (VIDEO_FONT_WIDTH)
378 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
381 /* Default to 8bpp if bit depth not specified */
383 # define LCD_BPP LCD_COLOR8
389 /* Calculate nr. of bits per pixel and nr. of colors */
390 #define NBITS(bit_code) (1 << (bit_code))
391 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
393 /************************************************************************/
394 /* ** CONSOLE CONSTANTS */
395 /************************************************************************/
396 #if LCD_BPP == LCD_MONOCHROME
399 * Simple black/white definitions
401 # define CONSOLE_COLOR_BLACK 0
402 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
404 #elif LCD_BPP == LCD_COLOR8
407 * 8bpp color definitions
409 # define CONSOLE_COLOR_BLACK 0
410 # define CONSOLE_COLOR_RED 1
411 # define CONSOLE_COLOR_GREEN 2
412 # define CONSOLE_COLOR_YELLOW 3
413 # define CONSOLE_COLOR_BLUE 4
414 # define CONSOLE_COLOR_MAGENTA 5
415 # define CONSOLE_COLOR_CYAN 6
416 # define CONSOLE_COLOR_GREY 14
417 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
422 * 16bpp color definitions
424 # define CONSOLE_COLOR_BLACK 0x0000
425 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
427 #endif /* color definitions */
429 /************************************************************************/
431 # define PAGE_SIZE 4096
434 /************************************************************************/
435 /* ** CONSOLE DEFINITIONS & FUNCTIONS */
436 /************************************************************************/
437 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
438 # define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
441 # define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
444 #define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
445 #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
446 #define CONSOLE_ROW_FIRST (lcd_console_address)
447 #define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
448 #define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
450 #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
451 #define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
453 #if LCD_BPP == LCD_MONOCHROME
454 # define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
455 (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
456 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
457 # define COLOR_MASK(c) (c)
459 # error Unsupported LCD BPP.
462 /************************************************************************/