2 * Copyright (C) 2004-2010 Freescale Semiconductor, Inc.
4 * MPC823 and PXA LCD Controller
6 * Modeled after video interface by Paolo Scaffardi
10 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
12 * SPDX-License-Identifier: GPL-2.0+
18 extern char lcd_is_enabled;
20 extern int lcd_line_length;
22 extern struct vidinfo panel_info;
24 void lcd_ctrl_init(void *lcdbase);
25 void lcd_enable(void);
27 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
28 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue);
29 void lcd_initcolregs(void);
31 /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
32 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
34 int bmp_display(ulong addr, int x, int y);
37 * Set whether we need to flush the dcache when changing the LCD image. This
40 * @param flush non-zero to flush cache after update, 0 to skip
42 void lcd_set_flush_dcache(int flush);
44 #if defined CONFIG_MPC823
46 * LCD controller stucture for MPC823 CPU
48 typedef struct vidinfo {
49 ushort vl_col; /* Number of columns (i.e. 640) */
50 ushort vl_row; /* Number of rows (i.e. 480) */
51 ushort vl_width; /* Width of display area in millimeters */
52 ushort vl_height; /* Height of display area in millimeters */
54 /* LCD configuration register */
55 u_char vl_clkp; /* Clock polarity */
56 u_char vl_oep; /* Output Enable polarity */
57 u_char vl_hsp; /* Horizontal Sync polarity */
58 u_char vl_vsp; /* Vertical Sync polarity */
59 u_char vl_dp; /* Data polarity */
60 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
61 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
62 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
63 u_char vl_clor; /* Color, 0 = mono, 1 = color */
64 u_char vl_tft; /* 0 = passive, 1 = TFT */
66 /* Horizontal control register. Timing from data sheet */
67 ushort vl_wbl; /* Wait between lines */
69 /* Vertical control register */
70 u_char vl_vpw; /* Vertical sync pulse width */
71 u_char vl_lcdac; /* LCD AC timing */
72 u_char vl_wbf; /* Wait between frames */
75 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
76 defined CONFIG_CPU_MONAHANS
78 * PXA LCD DMA descriptor
80 struct pxafb_dma_descriptor {
81 u_long fdadr; /* Frame descriptor address register */
82 u_long fsadr; /* Frame source address register */
83 u_long fidr; /* Frame ID register */
84 u_long ldcmd; /* Command register */
100 /* DMA descriptors */
101 struct pxafb_dma_descriptor * dmadesc_fblow;
102 struct pxafb_dma_descriptor * dmadesc_fbhigh;
103 struct pxafb_dma_descriptor * dmadesc_palette;
105 u_long screen; /* physical address of frame buffer */
106 u_long palette; /* physical address of palette memory */
111 * LCD controller stucture for PXA CPU
113 typedef struct vidinfo {
114 ushort vl_col; /* Number of columns (i.e. 640) */
115 ushort vl_row; /* Number of rows (i.e. 480) */
116 ushort vl_width; /* Width of display area in millimeters */
117 ushort vl_height; /* Height of display area in millimeters */
119 /* LCD configuration register */
120 u_char vl_clkp; /* Clock polarity */
121 u_char vl_oep; /* Output Enable polarity */
122 u_char vl_hsp; /* Horizontal Sync polarity */
123 u_char vl_vsp; /* Vertical Sync polarity */
124 u_char vl_dp; /* Data polarity */
125 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
126 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
127 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
128 u_char vl_clor; /* Color, 0 = mono, 1 = color */
129 u_char vl_tft; /* 0 = passive, 1 = TFT */
131 /* Horizontal control register. Timing from data sheet */
132 ushort vl_hpw; /* Horz sync pulse width */
133 u_char vl_blw; /* Wait before of line */
134 u_char vl_elw; /* Wait end of line */
136 /* Vertical control register. */
137 u_char vl_vpw; /* Vertical sync pulse width */
138 u_char vl_bfw; /* Wait before of frame */
139 u_char vl_efw; /* Wait end of frame */
141 /* PXA LCD controller params */
142 struct pxafb_info pxa;
145 #elif defined(CONFIG_ATMEL_LCD) || defined(CONFIG_ATMEL_HLCD)
147 typedef struct vidinfo {
148 ushort vl_col; /* Number of columns (i.e. 640) */
149 ushort vl_row; /* Number of rows (i.e. 480) */
150 u_long vl_clk; /* pixel clock in ps */
152 /* LCD configuration register */
153 u_long vl_sync; /* Horizontal / vertical sync */
154 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
155 u_long vl_tft; /* 0 = passive, 1 = TFT */
156 u_long vl_cont_pol_low; /* contrast polarity is low */
157 u_long vl_clk_pol; /* clock polarity */
159 /* Horizontal control register. */
160 u_long vl_hsync_len; /* Length of horizontal sync */
161 u_long vl_left_margin; /* Time from sync to picture */
162 u_long vl_right_margin; /* Time from picture to sync */
164 /* Vertical control register. */
165 u_long vl_vsync_len; /* Length of vertical sync */
166 u_long vl_upper_margin; /* Time from sync to picture */
167 u_long vl_lower_margin; /* Time from picture to sync */
169 u_long mmio; /* Memory mapped registers */
172 #elif defined(CONFIG_EXYNOS_FB)
175 FIMD_RGB_INTERFACE = 1,
176 FIMD_CPU_INTERFACE = 2,
179 enum exynos_fb_rgb_mode_t {
186 typedef struct vidinfo {
187 ushort vl_col; /* Number of columns (i.e. 640) */
188 ushort vl_row; /* Number of rows (i.e. 480) */
189 ushort vl_width; /* Width of display area in millimeters */
190 ushort vl_height; /* Height of display area in millimeters */
192 /* LCD configuration register */
193 u_char vl_freq; /* Frequency */
194 u_char vl_clkp; /* Clock polarity */
195 u_char vl_oep; /* Output Enable polarity */
196 u_char vl_hsp; /* Horizontal Sync polarity */
197 u_char vl_vsp; /* Vertical Sync polarity */
198 u_char vl_dp; /* Data polarity */
199 u_char vl_bpix; /* Bits per pixel */
201 /* Horizontal control register. Timing from data sheet */
202 u_char vl_hspw; /* Horz sync pulse width */
203 u_char vl_hfpd; /* Wait before of line */
204 u_char vl_hbpd; /* Wait end of line */
206 /* Vertical control register. */
207 u_char vl_vspw; /* Vertical sync pulse width */
208 u_char vl_vfpd; /* Wait before of frame */
209 u_char vl_vbpd; /* Wait end of frame */
210 u_char vl_cmd_allow_len; /* Wait end of frame */
213 unsigned int init_delay;
214 unsigned int power_on_delay;
215 unsigned int reset_delay;
216 unsigned int interface_mode;
217 unsigned int mipi_enabled;
218 unsigned int dp_enabled;
219 unsigned int cs_setup;
220 unsigned int wr_setup;
222 unsigned int wr_hold;
223 unsigned int logo_on;
224 unsigned int logo_width;
225 unsigned int logo_height;
228 unsigned long logo_addr;
229 unsigned int rgb_mode;
230 unsigned int resolution;
232 /* parent clock name(MPLL, EPLL or VPLL) */
233 unsigned int pclk_name;
234 /* ratio value for source clock from parent clock. */
235 unsigned int sclk_div;
237 unsigned int dual_lcd_enabled;
240 void init_panel_info(vidinfo_t *vid);
244 typedef struct vidinfo {
245 ushort vl_col; /* Number of columns (i.e. 160) */
246 ushort vl_row; /* Number of rows (i.e. 100) */
248 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
250 ushort *cmap; /* Pointer to the colormap */
252 void *priv; /* Pointer to driver-specific data */
255 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_ATMEL_LCD */
257 extern vidinfo_t panel_info;
259 /* Video functions */
261 void lcd_disable(void);
262 void lcd_panel_disable(void);
264 void lcd_putc(const char c);
265 void lcd_puts(const char *s);
266 void lcd_printf(const char *fmt, ...);
267 void lcd_clear(void);
268 int lcd_display_bitmap(ulong bmp_image, int x, int y);
271 * Get the width of the LCD in pixels
273 * @return width of LCD in pixels
275 int lcd_get_pixel_width(void);
278 * Get the height of the LCD in pixels
280 * @return height of LCD in pixels
282 int lcd_get_pixel_height(void);
285 * Get the number of text lines/rows on the LCD
287 * @return number of rows
289 int lcd_get_screen_rows(void);
292 * Get the number of text columns on the LCD
294 * @return number of columns
296 int lcd_get_screen_columns(void);
299 * Set the position of the text cursor
301 * @param col Column to place cursor (0 = left side)
302 * @param row Row to place cursor (0 = top line)
304 void lcd_position_cursor(unsigned col, unsigned row);
306 /* Allow boards to customize the information displayed */
307 void lcd_show_board_info(void);
309 /* Return the size of the LCD frame buffer, and the line length */
310 int lcd_get_size(int *line_length);
312 int lcd_dt_simplefb_add_node(void *blob);
313 int lcd_dt_simplefb_enable_existing_node(void *blob);
315 /* Update the LCD / flush the cache */
318 /************************************************************************/
319 /* ** BITMAP DISPLAY SUPPORT */
320 /************************************************************************/
321 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
322 # include <bmp_layout.h>
323 # include <asm/byteorder.h>
327 * Information about displays we are using. This is for configuring
328 * the LCD controller and memory allocation. Someone has to know what
329 * is connected, as we can't autodetect anything.
331 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
332 #define CONFIG_SYS_LOW 1 /* Pins are active low */
334 #define LCD_MONOCHROME 0
338 #define LCD_COLOR16 4
339 #define LCD_COLOR32 5
340 /*----------------------------------------------------------------------*/
341 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
342 # define LCD_INFO_X 0
343 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
344 #elif defined(CONFIG_LCD_LOGO)
345 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
346 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
348 # define LCD_INFO_X VIDEO_FONT_WIDTH
349 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
352 /* Default to 8bpp if bit depth not specified */
354 # define LCD_BPP LCD_COLOR8
360 /* Calculate nr. of bits per pixel and nr. of colors */
361 #define NBITS(bit_code) (1 << (bit_code))
362 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
364 /************************************************************************/
365 /* ** CONSOLE CONSTANTS */
366 /************************************************************************/
367 #if LCD_BPP == LCD_MONOCHROME
370 * Simple black/white definitions
372 # define CONSOLE_COLOR_BLACK 0
373 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
375 #elif LCD_BPP == LCD_COLOR8
378 * 8bpp color definitions
380 # define CONSOLE_COLOR_BLACK 0
381 # define CONSOLE_COLOR_RED 1
382 # define CONSOLE_COLOR_GREEN 2
383 # define CONSOLE_COLOR_YELLOW 3
384 # define CONSOLE_COLOR_BLUE 4
385 # define CONSOLE_COLOR_MAGENTA 5
386 # define CONSOLE_COLOR_CYAN 6
387 # define CONSOLE_COLOR_GREY 14
388 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
390 #elif LCD_BPP == LCD_COLOR32
392 * 32bpp color definitions
394 # define CONSOLE_COLOR_RED 0x00ff0000
395 # define CONSOLE_COLOR_GREEN 0x0000ff00
396 # define CONSOLE_COLOR_YELLOW 0x00ffff00
397 # define CONSOLE_COLOR_BLUE 0x000000ff
398 # define CONSOLE_COLOR_MAGENTA 0x00ff00ff
399 # define CONSOLE_COLOR_CYAN 0x0000ffff
400 # define CONSOLE_COLOR_GREY 0x00aaaaaa
401 # define CONSOLE_COLOR_BLACK 0x00000000
402 # define CONSOLE_COLOR_WHITE 0x00ffffff /* Must remain last / highest*/
403 # define NBYTES(bit_code) (NBITS(bit_code) >> 3)
405 #elif LCD_BPP == LCD_COLOR16
408 * 16bpp color definitions
410 # define CONSOLE_COLOR_BLACK 0x0000
411 # define CONSOLE_COLOR_RED 0xf800
412 # define CONSOLE_COLOR_GREEN 0x07e0
413 # define CONSOLE_COLOR_YELLOW 0xffe0
414 # define CONSOLE_COLOR_BLUE 0x001f
415 # define CONSOLE_COLOR_MAGENTA 0xf81f
416 # define CONSOLE_COLOR_CYAN 0x07ff
417 # define CONSOLE_COLOR_GREY 0xcccc
418 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
421 #error Invalid LCD_BPP setting
422 #endif /* color definitions */
424 /************************************************************************/
426 # define PAGE_SIZE 4096
429 /************************************************************************/