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;
36 extern struct vidinfo panel_info;
38 void lcd_ctrl_init(void *lcdbase);
39 void lcd_enable(void);
40 int board_splash_screen_prepare(void);
42 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
43 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue);
44 void lcd_initcolregs(void);
46 int lcd_getfgcolor(void);
48 /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
49 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
51 int bmp_display(ulong addr, int x, int y);
54 * Set whether we need to flush the dcache when changing the LCD image. This
57 * @param flush non-zero to flush cache after update, 0 to skip
59 void lcd_set_flush_dcache(int flush);
61 #if defined CONFIG_MPC823
63 * LCD controller stucture for MPC823 CPU
65 typedef struct vidinfo {
66 ushort vl_col; /* Number of columns (i.e. 640) */
67 ushort vl_row; /* Number of rows (i.e. 480) */
68 ushort vl_width; /* Width of display area in millimeters */
69 ushort vl_height; /* Height of display area in millimeters */
71 /* LCD configuration register */
72 u_char vl_clkp; /* Clock polarity */
73 u_char vl_oep; /* Output Enable polarity */
74 u_char vl_hsp; /* Horizontal Sync polarity */
75 u_char vl_vsp; /* Vertical Sync polarity */
76 u_char vl_dp; /* Data polarity */
77 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
78 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
79 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
80 u_char vl_clor; /* Color, 0 = mono, 1 = color */
81 u_char vl_tft; /* 0 = passive, 1 = TFT */
83 /* Horizontal control register. Timing from data sheet */
84 ushort vl_wbl; /* Wait between lines */
86 /* Vertical control register */
87 u_char vl_vpw; /* Vertical sync pulse width */
88 u_char vl_lcdac; /* LCD AC timing */
89 u_char vl_wbf; /* Wait between frames */
92 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
93 defined CONFIG_CPU_MONAHANS
95 * PXA LCD DMA descriptor
97 struct pxafb_dma_descriptor {
98 u_long fdadr; /* Frame descriptor address register */
99 u_long fsadr; /* Frame source address register */
100 u_long fidr; /* Frame ID register */
101 u_long ldcmd; /* Command register */
117 /* DMA descriptors */
118 struct pxafb_dma_descriptor * dmadesc_fblow;
119 struct pxafb_dma_descriptor * dmadesc_fbhigh;
120 struct pxafb_dma_descriptor * dmadesc_palette;
122 u_long screen; /* physical address of frame buffer */
123 u_long palette; /* physical address of palette memory */
128 * LCD controller stucture for PXA CPU
130 typedef struct vidinfo {
131 ushort vl_col; /* Number of columns (i.e. 640) */
132 ushort vl_row; /* Number of rows (i.e. 480) */
133 ushort vl_width; /* Width of display area in millimeters */
134 ushort vl_height; /* Height of display area in millimeters */
136 /* LCD configuration register */
137 u_char vl_clkp; /* Clock polarity */
138 u_char vl_oep; /* Output Enable polarity */
139 u_char vl_hsp; /* Horizontal Sync polarity */
140 u_char vl_vsp; /* Vertical Sync polarity */
141 u_char vl_dp; /* Data polarity */
142 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
143 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
144 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
145 u_char vl_clor; /* Color, 0 = mono, 1 = color */
146 u_char vl_tft; /* 0 = passive, 1 = TFT */
148 /* Horizontal control register. Timing from data sheet */
149 ushort vl_hpw; /* Horz sync pulse width */
150 u_char vl_blw; /* Wait before of line */
151 u_char vl_elw; /* Wait end of line */
153 /* Vertical control register. */
154 u_char vl_vpw; /* Vertical sync pulse width */
155 u_char vl_bfw; /* Wait before of frame */
156 u_char vl_efw; /* Wait end of frame */
158 /* PXA LCD controller params */
159 struct pxafb_info pxa;
162 #elif defined(CONFIG_ATMEL_LCD) || defined(CONFIG_ATMEL_HLCD)
164 typedef struct vidinfo {
165 ushort vl_col; /* Number of columns (i.e. 640) */
166 ushort vl_row; /* Number of rows (i.e. 480) */
167 u_long vl_clk; /* pixel clock in ps */
169 /* LCD configuration register */
170 u_long vl_sync; /* Horizontal / vertical sync */
171 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
172 u_long vl_tft; /* 0 = passive, 1 = TFT */
173 u_long vl_cont_pol_low; /* contrast polarity is low */
174 u_long vl_clk_pol; /* clock polarity */
176 /* Horizontal control register. */
177 u_long vl_hsync_len; /* Length of horizontal sync */
178 u_long vl_left_margin; /* Time from sync to picture */
179 u_long vl_right_margin; /* Time from picture to sync */
181 /* Vertical control register. */
182 u_long vl_vsync_len; /* Length of vertical sync */
183 u_long vl_upper_margin; /* Time from sync to picture */
184 u_long vl_lower_margin; /* Time from picture to sync */
186 u_long mmio; /* Memory mapped registers */
189 #elif defined(CONFIG_EXYNOS_FB)
192 FIMD_RGB_INTERFACE = 1,
193 FIMD_CPU_INTERFACE = 2,
196 enum exynos_fb_rgb_mode_t {
203 typedef struct vidinfo {
204 ushort vl_col; /* Number of columns (i.e. 640) */
205 ushort vl_row; /* Number of rows (i.e. 480) */
206 ushort vl_width; /* Width of display area in millimeters */
207 ushort vl_height; /* Height of display area in millimeters */
209 /* LCD configuration register */
210 u_char vl_freq; /* Frequency */
211 u_char vl_clkp; /* Clock polarity */
212 u_char vl_oep; /* Output Enable polarity */
213 u_char vl_hsp; /* Horizontal Sync polarity */
214 u_char vl_vsp; /* Vertical Sync polarity */
215 u_char vl_dp; /* Data polarity */
216 u_char vl_bpix; /* Bits per pixel */
218 /* Horizontal control register. Timing from data sheet */
219 u_char vl_hspw; /* Horz sync pulse width */
220 u_char vl_hfpd; /* Wait before of line */
221 u_char vl_hbpd; /* Wait end of line */
223 /* Vertical control register. */
224 u_char vl_vspw; /* Vertical sync pulse width */
225 u_char vl_vfpd; /* Wait before of frame */
226 u_char vl_vbpd; /* Wait end of frame */
227 u_char vl_cmd_allow_len; /* Wait end of frame */
230 unsigned int init_delay;
231 unsigned int power_on_delay;
232 unsigned int reset_delay;
233 unsigned int interface_mode;
234 unsigned int mipi_enabled;
235 unsigned int dp_enabled;
236 unsigned int cs_setup;
237 unsigned int wr_setup;
239 unsigned int wr_hold;
240 unsigned int logo_on;
241 unsigned int logo_width;
242 unsigned int logo_height;
243 unsigned long logo_addr;
244 unsigned int rgb_mode;
245 unsigned int resolution;
247 /* parent clock name(MPLL, EPLL or VPLL) */
248 unsigned int pclk_name;
249 /* ratio value for source clock from parent clock. */
250 unsigned int sclk_div;
252 unsigned int dual_lcd_enabled;
255 void init_panel_info(vidinfo_t *vid);
259 typedef struct vidinfo {
260 ushort vl_col; /* Number of columns (i.e. 160) */
261 ushort vl_row; /* Number of rows (i.e. 100) */
263 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
265 ushort *cmap; /* Pointer to the colormap */
267 void *priv; /* Pointer to driver-specific data */
270 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_MCC200, CONFIG_ATMEL_LCD */
272 extern vidinfo_t panel_info;
274 /* Video functions */
276 #if defined(CONFIG_RBC823)
277 void lcd_disable(void);
280 void lcd_putc(const char c);
281 void lcd_puts(const char *s);
282 void lcd_printf(const char *fmt, ...);
283 void lcd_clear(void);
284 int lcd_display_bitmap(ulong bmp_image, int x, int y);
287 * Get the width of the LCD in pixels
289 * @return width of LCD in pixels
291 int lcd_get_pixel_width(void);
294 * Get the height of the LCD in pixels
296 * @return height of LCD in pixels
298 int lcd_get_pixel_height(void);
301 * Get the number of text lines/rows on the LCD
303 * @return number of rows
305 int lcd_get_screen_rows(void);
308 * Get the number of text columns on the LCD
310 * @return number of columns
312 int lcd_get_screen_columns(void);
315 * Set the position of the text cursor
317 * @param col Column to place cursor (0 = left side)
318 * @param row Row to place cursor (0 = top line)
320 void lcd_position_cursor(unsigned col, unsigned row);
322 /* Allow boards to customize the information displayed */
323 void lcd_show_board_info(void);
325 /* Return the size of the LCD frame buffer, and the line length */
326 int lcd_get_size(int *line_length);
328 int lcd_dt_simplefb_add_node(void *blob);
329 int lcd_dt_simplefb_enable_existing_node(void *blob);
331 /************************************************************************/
332 /* ** BITMAP DISPLAY SUPPORT */
333 /************************************************************************/
334 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
335 # include <bmp_layout.h>
336 # include <asm/byteorder.h>
340 * Information about displays we are using. This is for configuring
341 * the LCD controller and memory allocation. Someone has to know what
342 * is connected, as we can't autodetect anything.
344 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
345 #define CONFIG_SYS_LOW 1 /* Pins are active low */
347 #define LCD_MONOCHROME 0
351 #define LCD_COLOR16 4
353 /*----------------------------------------------------------------------*/
354 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
355 # define LCD_INFO_X 0
356 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
357 #elif defined(CONFIG_LCD_LOGO)
358 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
359 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
361 # define LCD_INFO_X VIDEO_FONT_WIDTH
362 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
365 /* Default to 8bpp if bit depth not specified */
367 # define LCD_BPP LCD_COLOR8
373 /* Calculate nr. of bits per pixel and nr. of colors */
374 #define NBITS(bit_code) (1 << (bit_code))
375 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
377 /************************************************************************/
378 /* ** CONSOLE CONSTANTS */
379 /************************************************************************/
380 #if LCD_BPP == LCD_MONOCHROME
383 * Simple black/white definitions
385 # define CONSOLE_COLOR_BLACK 0
386 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
388 #elif LCD_BPP == LCD_COLOR8
391 * 8bpp color definitions
393 # define CONSOLE_COLOR_BLACK 0
394 # define CONSOLE_COLOR_RED 1
395 # define CONSOLE_COLOR_GREEN 2
396 # define CONSOLE_COLOR_YELLOW 3
397 # define CONSOLE_COLOR_BLUE 4
398 # define CONSOLE_COLOR_MAGENTA 5
399 # define CONSOLE_COLOR_CYAN 6
400 # define CONSOLE_COLOR_GREY 14
401 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
406 * 16bpp color definitions
408 # define CONSOLE_COLOR_BLACK 0x0000
409 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
411 #endif /* color definitions */
413 /************************************************************************/
415 # define PAGE_SIZE 4096
418 /************************************************************************/