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;
37 * Frame buffer memory information
39 extern void *lcd_base; /* Start of framebuffer memory */
41 extern struct vidinfo panel_info;
43 extern void lcd_ctrl_init (void *lcdbase);
44 extern void lcd_enable (void);
45 extern int board_splash_screen_prepare(void);
47 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
48 extern void lcd_setcolreg (ushort regno,
49 ushort red, ushort green, ushort blue);
50 extern void lcd_initcolregs (void);
52 extern int lcd_getfgcolor(void);
54 /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
55 extern struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp);
56 extern int bmp_display(ulong addr, int x, int y);
59 * Set whether we need to flush the dcache when changing the LCD image. This
62 * @param flush non-zero to flush cache after update, 0 to skip
64 void lcd_set_flush_dcache(int flush);
66 #if defined CONFIG_MPC823
68 * LCD controller stucture for MPC823 CPU
70 typedef struct vidinfo {
71 ushort vl_col; /* Number of columns (i.e. 640) */
72 ushort vl_row; /* Number of rows (i.e. 480) */
73 ushort vl_width; /* Width of display area in millimeters */
74 ushort vl_height; /* Height of display area in millimeters */
76 /* LCD configuration register */
77 u_char vl_clkp; /* Clock polarity */
78 u_char vl_oep; /* Output Enable polarity */
79 u_char vl_hsp; /* Horizontal Sync polarity */
80 u_char vl_vsp; /* Vertical Sync polarity */
81 u_char vl_dp; /* Data polarity */
82 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
83 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
84 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
85 u_char vl_clor; /* Color, 0 = mono, 1 = color */
86 u_char vl_tft; /* 0 = passive, 1 = TFT */
88 /* Horizontal control register. Timing from data sheet */
89 ushort vl_wbl; /* Wait between lines */
91 /* Vertical control register */
92 u_char vl_vpw; /* Vertical sync pulse width */
93 u_char vl_lcdac; /* LCD AC timing */
94 u_char vl_wbf; /* Wait between frames */
97 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
98 defined CONFIG_CPU_MONAHANS
100 * PXA LCD DMA descriptor
102 struct pxafb_dma_descriptor {
103 u_long fdadr; /* Frame descriptor address register */
104 u_long fsadr; /* Frame source address register */
105 u_long fidr; /* Frame ID register */
106 u_long ldcmd; /* Command register */
122 /* DMA descriptors */
123 struct pxafb_dma_descriptor * dmadesc_fblow;
124 struct pxafb_dma_descriptor * dmadesc_fbhigh;
125 struct pxafb_dma_descriptor * dmadesc_palette;
127 u_long screen; /* physical address of frame buffer */
128 u_long palette; /* physical address of palette memory */
133 * LCD controller stucture for PXA CPU
135 typedef struct vidinfo {
136 ushort vl_col; /* Number of columns (i.e. 640) */
137 ushort vl_row; /* Number of rows (i.e. 480) */
138 ushort vl_width; /* Width of display area in millimeters */
139 ushort vl_height; /* Height of display area in millimeters */
141 /* LCD configuration register */
142 u_char vl_clkp; /* Clock polarity */
143 u_char vl_oep; /* Output Enable polarity */
144 u_char vl_hsp; /* Horizontal Sync polarity */
145 u_char vl_vsp; /* Vertical Sync polarity */
146 u_char vl_dp; /* Data polarity */
147 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
148 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
149 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
150 u_char vl_clor; /* Color, 0 = mono, 1 = color */
151 u_char vl_tft; /* 0 = passive, 1 = TFT */
153 /* Horizontal control register. Timing from data sheet */
154 ushort vl_hpw; /* Horz sync pulse width */
155 u_char vl_blw; /* Wait before of line */
156 u_char vl_elw; /* Wait end of line */
158 /* Vertical control register. */
159 u_char vl_vpw; /* Vertical sync pulse width */
160 u_char vl_bfw; /* Wait before of frame */
161 u_char vl_efw; /* Wait end of frame */
163 /* PXA LCD controller params */
164 struct pxafb_info pxa;
167 #elif defined(CONFIG_ATMEL_LCD) || defined(CONFIG_ATMEL_HLCD)
169 typedef struct vidinfo {
170 ushort vl_col; /* Number of columns (i.e. 640) */
171 ushort vl_row; /* Number of rows (i.e. 480) */
172 u_long vl_clk; /* pixel clock in ps */
174 /* LCD configuration register */
175 u_long vl_sync; /* Horizontal / vertical sync */
176 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
177 u_long vl_tft; /* 0 = passive, 1 = TFT */
178 u_long vl_cont_pol_low; /* contrast polarity is low */
179 u_long vl_clk_pol; /* clock polarity */
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 */
194 #elif defined(CONFIG_EXYNOS_FB)
197 FIMD_RGB_INTERFACE = 1,
198 FIMD_CPU_INTERFACE = 2,
201 enum exynos_fb_rgb_mode_t {
208 typedef struct vidinfo {
209 ushort vl_col; /* Number of columns (i.e. 640) */
210 ushort vl_row; /* Number of rows (i.e. 480) */
211 ushort vl_width; /* Width of display area in millimeters */
212 ushort vl_height; /* Height of display area in millimeters */
214 /* LCD configuration register */
215 u_char vl_freq; /* Frequency */
216 u_char vl_clkp; /* Clock polarity */
217 u_char vl_oep; /* Output Enable polarity */
218 u_char vl_hsp; /* Horizontal Sync polarity */
219 u_char vl_vsp; /* Vertical Sync polarity */
220 u_char vl_dp; /* Data polarity */
221 u_char vl_bpix; /* Bits per pixel */
223 /* Horizontal control register. Timing from data sheet */
224 u_char vl_hspw; /* Horz sync pulse width */
225 u_char vl_hfpd; /* Wait before of line */
226 u_char vl_hbpd; /* Wait end of line */
228 /* Vertical control register. */
229 u_char vl_vspw; /* Vertical sync pulse width */
230 u_char vl_vfpd; /* Wait before of frame */
231 u_char vl_vbpd; /* Wait end of frame */
232 u_char vl_cmd_allow_len; /* Wait end of frame */
234 void (*cfg_gpio)(void);
235 void (*backlight_on)(unsigned int onoff);
236 void (*reset_lcd)(void);
237 void (*lcd_power_on)(void);
238 void (*cfg_ldo)(void);
239 void (*enable_ldo)(unsigned int onoff);
240 void (*mipi_power)(void);
241 void (*backlight_reset)(void);
244 unsigned int init_delay;
245 unsigned int power_on_delay;
246 unsigned int reset_delay;
247 unsigned int interface_mode;
248 unsigned int mipi_enabled;
249 unsigned int dp_enabled;
250 unsigned int cs_setup;
251 unsigned int wr_setup;
253 unsigned int wr_hold;
254 unsigned int logo_on;
255 unsigned int logo_width;
256 unsigned int logo_height;
257 unsigned long logo_addr;
258 unsigned int rgb_mode;
259 unsigned int resolution;
261 /* parent clock name(MPLL, EPLL or VPLL) */
262 unsigned int pclk_name;
263 /* ratio value for source clock from parent clock. */
264 unsigned int sclk_div;
266 unsigned int dual_lcd_enabled;
270 void init_panel_info(vidinfo_t *vid);
274 typedef struct vidinfo {
275 ushort vl_col; /* Number of columns (i.e. 160) */
276 ushort vl_row; /* Number of rows (i.e. 100) */
278 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
280 ushort *cmap; /* Pointer to the colormap */
282 void *priv; /* Pointer to driver-specific data */
285 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_MCC200, CONFIG_ATMEL_LCD */
287 extern vidinfo_t panel_info;
289 /* Video functions */
291 #if defined(CONFIG_RBC823)
292 void lcd_disable (void);
296 /* int lcd_init (void *lcdbase); */
297 void lcd_putc (const char c);
298 void lcd_puts (const char *s);
299 void lcd_printf (const char *fmt, ...);
300 void lcd_clear(void);
301 int lcd_display_bitmap(ulong bmp_image, int x, int y);
304 * Get the width of the LCD in pixels
306 * @return width of LCD in pixels
308 int lcd_get_pixel_width(void);
311 * Get the height of the LCD in pixels
313 * @return height of LCD in pixels
315 int lcd_get_pixel_height(void);
318 * Get the number of text lines/rows on the LCD
320 * @return number of rows
322 int lcd_get_screen_rows(void);
325 * Get the number of text columns on the LCD
327 * @return number of columns
329 int lcd_get_screen_columns(void);
332 * Set the position of the text cursor
334 * @param col Column to place cursor (0 = left side)
335 * @param row Row to place cursor (0 = top line)
337 void lcd_position_cursor(unsigned col, unsigned row);
339 /* Allow boards to customize the information displayed */
340 void lcd_show_board_info(void);
342 /* Return the size of the LCD frame buffer, and the line length */
343 int lcd_get_size(int *line_length);
345 /************************************************************************/
346 /* ** BITMAP DISPLAY SUPPORT */
347 /************************************************************************/
348 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
349 # include <bmp_layout.h>
350 # include <asm/byteorder.h>
354 * Information about displays we are using. This is for configuring
355 * the LCD controller and memory allocation. Someone has to know what
356 * is connected, as we can't autodetect anything.
358 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
359 #define CONFIG_SYS_LOW 1 /* Pins are active low */
361 #define LCD_MONOCHROME 0
365 #define LCD_COLOR16 4
367 /*----------------------------------------------------------------------*/
368 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
369 # define LCD_INFO_X 0
370 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
371 #elif defined(CONFIG_LCD_LOGO)
372 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
373 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
375 # define LCD_INFO_X (VIDEO_FONT_WIDTH)
376 # define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
379 /* Default to 8bpp if bit depth not specified */
381 # define LCD_BPP LCD_COLOR8
387 /* Calculate nr. of bits per pixel and nr. of colors */
388 #define NBITS(bit_code) (1 << (bit_code))
389 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
391 /************************************************************************/
392 /* ** CONSOLE CONSTANTS */
393 /************************************************************************/
394 #if LCD_BPP == LCD_MONOCHROME
397 * Simple black/white definitions
399 # define CONSOLE_COLOR_BLACK 0
400 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
402 #elif LCD_BPP == LCD_COLOR8
405 * 8bpp color definitions
407 # define CONSOLE_COLOR_BLACK 0
408 # define CONSOLE_COLOR_RED 1
409 # define CONSOLE_COLOR_GREEN 2
410 # define CONSOLE_COLOR_YELLOW 3
411 # define CONSOLE_COLOR_BLUE 4
412 # define CONSOLE_COLOR_MAGENTA 5
413 # define CONSOLE_COLOR_CYAN 6
414 # define CONSOLE_COLOR_GREY 14
415 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
420 * 16bpp color definitions
422 # define CONSOLE_COLOR_BLACK 0x0000
423 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
425 #endif /* color definitions */
427 /************************************************************************/
429 # define PAGE_SIZE 4096
432 /************************************************************************/
433 /* ** CONSOLE DEFINITIONS & FUNCTIONS */
434 /************************************************************************/
435 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
436 # define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
439 # define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
442 #define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
443 #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
444 #define CONSOLE_ROW_FIRST (lcd_console_address)
445 #define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
446 #define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
448 #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
449 #define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
451 #if LCD_BPP == LCD_MONOCHROME
452 # define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
453 (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
454 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
455 # define COLOR_MASK(c) (c)
457 # error Unsupported LCD BPP.
460 /************************************************************************/