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);
50 int bmp_display(ulong addr, int x, int y);
53 * Set whether we need to flush the dcache when changing the LCD image. This
56 * @param flush non-zero to flush cache after update, 0 to skip
58 void lcd_set_flush_dcache(int flush);
60 #if defined CONFIG_MPC823
62 * LCD controller stucture for MPC823 CPU
64 typedef struct vidinfo {
65 ushort vl_col; /* Number of columns (i.e. 640) */
66 ushort vl_row; /* Number of rows (i.e. 480) */
67 ushort vl_width; /* Width of display area in millimeters */
68 ushort vl_height; /* Height of display area in millimeters */
70 /* LCD configuration register */
71 u_char vl_clkp; /* Clock polarity */
72 u_char vl_oep; /* Output Enable polarity */
73 u_char vl_hsp; /* Horizontal Sync polarity */
74 u_char vl_vsp; /* Vertical Sync polarity */
75 u_char vl_dp; /* Data polarity */
76 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
77 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
78 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
79 u_char vl_clor; /* Color, 0 = mono, 1 = color */
80 u_char vl_tft; /* 0 = passive, 1 = TFT */
82 /* Horizontal control register. Timing from data sheet */
83 ushort vl_wbl; /* Wait between lines */
85 /* Vertical control register */
86 u_char vl_vpw; /* Vertical sync pulse width */
87 u_char vl_lcdac; /* LCD AC timing */
88 u_char vl_wbf; /* Wait between frames */
91 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
92 defined CONFIG_CPU_MONAHANS
94 * PXA LCD DMA descriptor
96 struct pxafb_dma_descriptor {
97 u_long fdadr; /* Frame descriptor address register */
98 u_long fsadr; /* Frame source address register */
99 u_long fidr; /* Frame ID register */
100 u_long ldcmd; /* Command register */
116 /* DMA descriptors */
117 struct pxafb_dma_descriptor * dmadesc_fblow;
118 struct pxafb_dma_descriptor * dmadesc_fbhigh;
119 struct pxafb_dma_descriptor * dmadesc_palette;
121 u_long screen; /* physical address of frame buffer */
122 u_long palette; /* physical address of palette memory */
127 * LCD controller stucture for PXA CPU
129 typedef struct vidinfo {
130 ushort vl_col; /* Number of columns (i.e. 640) */
131 ushort vl_row; /* Number of rows (i.e. 480) */
132 ushort vl_width; /* Width of display area in millimeters */
133 ushort vl_height; /* Height of display area in millimeters */
135 /* LCD configuration register */
136 u_char vl_clkp; /* Clock polarity */
137 u_char vl_oep; /* Output Enable polarity */
138 u_char vl_hsp; /* Horizontal Sync polarity */
139 u_char vl_vsp; /* Vertical Sync polarity */
140 u_char vl_dp; /* Data polarity */
141 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
142 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
143 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
144 u_char vl_clor; /* Color, 0 = mono, 1 = color */
145 u_char vl_tft; /* 0 = passive, 1 = TFT */
147 /* Horizontal control register. Timing from data sheet */
148 ushort vl_hpw; /* Horz sync pulse width */
149 u_char vl_blw; /* Wait before of line */
150 u_char vl_elw; /* Wait end of line */
152 /* Vertical control register. */
153 u_char vl_vpw; /* Vertical sync pulse width */
154 u_char vl_bfw; /* Wait before of frame */
155 u_char vl_efw; /* Wait end of frame */
157 /* PXA LCD controller params */
158 struct pxafb_info pxa;
161 #elif defined(CONFIG_ATMEL_LCD) || defined(CONFIG_ATMEL_HLCD)
163 typedef struct vidinfo {
164 ushort vl_col; /* Number of columns (i.e. 640) */
165 ushort vl_row; /* Number of rows (i.e. 480) */
166 u_long vl_clk; /* pixel clock in ps */
168 /* LCD configuration register */
169 u_long vl_sync; /* Horizontal / vertical sync */
170 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
171 u_long vl_tft; /* 0 = passive, 1 = TFT */
172 u_long vl_cont_pol_low; /* contrast polarity is low */
173 u_long vl_clk_pol; /* clock polarity */
175 /* Horizontal control register. */
176 u_long vl_hsync_len; /* Length of horizontal sync */
177 u_long vl_left_margin; /* Time from sync to picture */
178 u_long vl_right_margin; /* Time from picture to sync */
180 /* Vertical control register. */
181 u_long vl_vsync_len; /* Length of vertical sync */
182 u_long vl_upper_margin; /* Time from sync to picture */
183 u_long vl_lower_margin; /* Time from picture to sync */
185 u_long mmio; /* Memory mapped registers */
188 #elif defined(CONFIG_EXYNOS_FB)
191 FIMD_RGB_INTERFACE = 1,
192 FIMD_CPU_INTERFACE = 2,
195 enum exynos_fb_rgb_mode_t {
202 typedef struct vidinfo {
203 ushort vl_col; /* Number of columns (i.e. 640) */
204 ushort vl_row; /* Number of rows (i.e. 480) */
205 ushort vl_width; /* Width of display area in millimeters */
206 ushort vl_height; /* Height of display area in millimeters */
208 /* LCD configuration register */
209 u_char vl_freq; /* Frequency */
210 u_char vl_clkp; /* Clock polarity */
211 u_char vl_oep; /* Output Enable polarity */
212 u_char vl_hsp; /* Horizontal Sync polarity */
213 u_char vl_vsp; /* Vertical Sync polarity */
214 u_char vl_dp; /* Data polarity */
215 u_char vl_bpix; /* Bits per pixel */
217 /* Horizontal control register. Timing from data sheet */
218 u_char vl_hspw; /* Horz sync pulse width */
219 u_char vl_hfpd; /* Wait before of line */
220 u_char vl_hbpd; /* Wait end of line */
222 /* Vertical control register. */
223 u_char vl_vspw; /* Vertical sync pulse width */
224 u_char vl_vfpd; /* Wait before of frame */
225 u_char vl_vbpd; /* Wait end of frame */
226 u_char vl_cmd_allow_len; /* Wait end of frame */
228 void (*cfg_gpio)(void);
229 void (*backlight_on)(unsigned int onoff);
230 void (*reset_lcd)(void);
231 void (*lcd_power_on)(void);
232 void (*cfg_ldo)(void);
233 void (*enable_ldo)(unsigned int onoff);
234 void (*mipi_power)(void);
235 void (*backlight_reset)(void);
238 unsigned int init_delay;
239 unsigned int power_on_delay;
240 unsigned int reset_delay;
241 unsigned int interface_mode;
242 unsigned int mipi_enabled;
243 unsigned int dp_enabled;
244 unsigned int cs_setup;
245 unsigned int wr_setup;
247 unsigned int wr_hold;
248 unsigned int logo_on;
249 unsigned int logo_width;
250 unsigned int logo_height;
251 unsigned long logo_addr;
252 unsigned int rgb_mode;
253 unsigned int resolution;
255 /* parent clock name(MPLL, EPLL or VPLL) */
256 unsigned int pclk_name;
257 /* ratio value for source clock from parent clock. */
258 unsigned int sclk_div;
260 unsigned int dual_lcd_enabled;
263 void init_panel_info(vidinfo_t *vid);
267 typedef struct vidinfo {
268 ushort vl_col; /* Number of columns (i.e. 160) */
269 ushort vl_row; /* Number of rows (i.e. 100) */
271 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
273 ushort *cmap; /* Pointer to the colormap */
275 void *priv; /* Pointer to driver-specific data */
278 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_MCC200, CONFIG_ATMEL_LCD */
280 extern vidinfo_t panel_info;
282 /* Video functions */
284 #if defined(CONFIG_RBC823)
285 void lcd_disable(void);
288 void lcd_putc(const char c);
289 void lcd_puts(const char *s);
290 void lcd_printf(const char *fmt, ...);
291 void lcd_clear(void);
292 int lcd_display_bitmap(ulong bmp_image, int x, int y);
295 * Get the width of the LCD in pixels
297 * @return width of LCD in pixels
299 int lcd_get_pixel_width(void);
302 * Get the height of the LCD in pixels
304 * @return height of LCD in pixels
306 int lcd_get_pixel_height(void);
309 * Get the number of text lines/rows on the LCD
311 * @return number of rows
313 int lcd_get_screen_rows(void);
316 * Get the number of text columns on the LCD
318 * @return number of columns
320 int lcd_get_screen_columns(void);
323 * Set the position of the text cursor
325 * @param col Column to place cursor (0 = left side)
326 * @param row Row to place cursor (0 = top line)
328 void lcd_position_cursor(unsigned col, unsigned row);
330 /* Allow boards to customize the information displayed */
331 void lcd_show_board_info(void);
333 /* Return the size of the LCD frame buffer, and the line length */
334 int lcd_get_size(int *line_length);
336 /************************************************************************/
337 /* ** BITMAP DISPLAY SUPPORT */
338 /************************************************************************/
339 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
340 # include <bmp_layout.h>
341 # include <asm/byteorder.h>
345 * Information about displays we are using. This is for configuring
346 * the LCD controller and memory allocation. Someone has to know what
347 * is connected, as we can't autodetect anything.
349 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
350 #define CONFIG_SYS_LOW 1 /* Pins are active low */
352 #define LCD_MONOCHROME 0
356 #define LCD_COLOR16 4
358 /*----------------------------------------------------------------------*/
359 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
360 # define LCD_INFO_X 0
361 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
362 #elif defined(CONFIG_LCD_LOGO)
363 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
364 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
366 # define LCD_INFO_X VIDEO_FONT_WIDTH
367 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
370 /* Default to 8bpp if bit depth not specified */
372 # define LCD_BPP LCD_COLOR8
378 /* Calculate nr. of bits per pixel and nr. of colors */
379 #define NBITS(bit_code) (1 << (bit_code))
380 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
382 /************************************************************************/
383 /* ** CONSOLE CONSTANTS */
384 /************************************************************************/
385 #if LCD_BPP == LCD_MONOCHROME
388 * Simple black/white definitions
390 # define CONSOLE_COLOR_BLACK 0
391 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
393 #elif LCD_BPP == LCD_COLOR8
396 * 8bpp color definitions
398 # define CONSOLE_COLOR_BLACK 0
399 # define CONSOLE_COLOR_RED 1
400 # define CONSOLE_COLOR_GREEN 2
401 # define CONSOLE_COLOR_YELLOW 3
402 # define CONSOLE_COLOR_BLUE 4
403 # define CONSOLE_COLOR_MAGENTA 5
404 # define CONSOLE_COLOR_CYAN 6
405 # define CONSOLE_COLOR_GREY 14
406 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
411 * 16bpp color definitions
413 # define CONSOLE_COLOR_BLACK 0x0000
414 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
416 #endif /* color definitions */
418 /************************************************************************/
420 # define PAGE_SIZE 4096
423 /************************************************************************/