2 * MPC823 and PXA LCD Controller
4 * Modeled after video interface by Paolo Scaffardi
8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
10 * SPDX-License-Identifier: GPL-2.0+
16 extern char lcd_is_enabled;
18 extern int lcd_line_length;
20 extern struct vidinfo panel_info;
22 void lcd_ctrl_init(void *lcdbase);
23 void lcd_enable(void);
25 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
26 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue);
27 void lcd_initcolregs(void);
29 /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
30 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
32 int bmp_display(ulong addr, int x, int y);
35 * Set whether we need to flush the dcache when changing the LCD image. This
38 * @param flush non-zero to flush cache after update, 0 to skip
40 void lcd_set_flush_dcache(int flush);
42 #if defined CONFIG_MPC823
44 * LCD controller stucture for MPC823 CPU
46 typedef struct vidinfo {
47 ushort vl_col; /* Number of columns (i.e. 640) */
48 ushort vl_row; /* Number of rows (i.e. 480) */
49 ushort vl_width; /* Width of display area in millimeters */
50 ushort vl_height; /* Height of display area in millimeters */
52 /* LCD configuration register */
53 u_char vl_clkp; /* Clock polarity */
54 u_char vl_oep; /* Output Enable polarity */
55 u_char vl_hsp; /* Horizontal Sync polarity */
56 u_char vl_vsp; /* Vertical Sync polarity */
57 u_char vl_dp; /* Data polarity */
58 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
59 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
60 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
61 u_char vl_clor; /* Color, 0 = mono, 1 = color */
62 u_char vl_tft; /* 0 = passive, 1 = TFT */
64 /* Horizontal control register. Timing from data sheet */
65 ushort vl_wbl; /* Wait between lines */
67 /* Vertical control register */
68 u_char vl_vpw; /* Vertical sync pulse width */
69 u_char vl_lcdac; /* LCD AC timing */
70 u_char vl_wbf; /* Wait between frames */
73 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
74 defined CONFIG_CPU_MONAHANS
76 * PXA LCD DMA descriptor
78 struct pxafb_dma_descriptor {
79 u_long fdadr; /* Frame descriptor address register */
80 u_long fsadr; /* Frame source address register */
81 u_long fidr; /* Frame ID register */
82 u_long ldcmd; /* Command register */
99 struct pxafb_dma_descriptor * dmadesc_fblow;
100 struct pxafb_dma_descriptor * dmadesc_fbhigh;
101 struct pxafb_dma_descriptor * dmadesc_palette;
103 u_long screen; /* physical address of frame buffer */
104 u_long palette; /* physical address of palette memory */
109 * LCD controller stucture for PXA CPU
111 typedef struct vidinfo {
112 ushort vl_col; /* Number of columns (i.e. 640) */
113 ushort vl_row; /* Number of rows (i.e. 480) */
114 ushort vl_width; /* Width of display area in millimeters */
115 ushort vl_height; /* Height of display area in millimeters */
117 /* LCD configuration register */
118 u_char vl_clkp; /* Clock polarity */
119 u_char vl_oep; /* Output Enable polarity */
120 u_char vl_hsp; /* Horizontal Sync polarity */
121 u_char vl_vsp; /* Vertical Sync polarity */
122 u_char vl_dp; /* Data polarity */
123 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
124 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
125 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
126 u_char vl_clor; /* Color, 0 = mono, 1 = color */
127 u_char vl_tft; /* 0 = passive, 1 = TFT */
129 /* Horizontal control register. Timing from data sheet */
130 ushort vl_hpw; /* Horz sync pulse width */
131 u_char vl_blw; /* Wait before of line */
132 u_char vl_elw; /* Wait end of line */
134 /* Vertical control register. */
135 u_char vl_vpw; /* Vertical sync pulse width */
136 u_char vl_bfw; /* Wait before of frame */
137 u_char vl_efw; /* Wait end of frame */
139 /* PXA LCD controller params */
140 struct pxafb_info pxa;
143 #elif defined(CONFIG_ATMEL_LCD) || defined(CONFIG_ATMEL_HLCD)
145 typedef struct vidinfo {
146 ushort vl_col; /* Number of columns (i.e. 640) */
147 ushort vl_row; /* Number of rows (i.e. 480) */
148 u_long vl_clk; /* pixel clock in ps */
150 /* LCD configuration register */
151 u_long vl_sync; /* Horizontal / vertical sync */
152 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
153 u_long vl_tft; /* 0 = passive, 1 = TFT */
154 u_long vl_cont_pol_low; /* contrast polarity is low */
155 u_long vl_clk_pol; /* clock polarity */
157 /* Horizontal control register. */
158 u_long vl_hsync_len; /* Length of horizontal sync */
159 u_long vl_left_margin; /* Time from sync to picture */
160 u_long vl_right_margin; /* Time from picture to sync */
162 /* Vertical control register. */
163 u_long vl_vsync_len; /* Length of vertical sync */
164 u_long vl_upper_margin; /* Time from sync to picture */
165 u_long vl_lower_margin; /* Time from picture to sync */
167 u_long mmio; /* Memory mapped registers */
170 #elif defined(CONFIG_EXYNOS_FB)
173 FIMD_RGB_INTERFACE = 1,
174 FIMD_CPU_INTERFACE = 2,
177 enum exynos_fb_rgb_mode_t {
184 typedef struct vidinfo {
185 ushort vl_col; /* Number of columns (i.e. 640) */
186 ushort vl_row; /* Number of rows (i.e. 480) */
187 ushort vl_width; /* Width of display area in millimeters */
188 ushort vl_height; /* Height of display area in millimeters */
190 /* LCD configuration register */
191 u_char vl_freq; /* Frequency */
192 u_char vl_clkp; /* Clock polarity */
193 u_char vl_oep; /* Output Enable polarity */
194 u_char vl_hsp; /* Horizontal Sync polarity */
195 u_char vl_vsp; /* Vertical Sync polarity */
196 u_char vl_dp; /* Data polarity */
197 u_char vl_bpix; /* Bits per pixel */
199 /* Horizontal control register. Timing from data sheet */
200 u_char vl_hspw; /* Horz sync pulse width */
201 u_char vl_hfpd; /* Wait before of line */
202 u_char vl_hbpd; /* Wait end of line */
204 /* Vertical control register. */
205 u_char vl_vspw; /* Vertical sync pulse width */
206 u_char vl_vfpd; /* Wait before of frame */
207 u_char vl_vbpd; /* Wait end of frame */
208 u_char vl_cmd_allow_len; /* Wait end of frame */
211 unsigned int init_delay;
212 unsigned int power_on_delay;
213 unsigned int reset_delay;
214 unsigned int interface_mode;
215 unsigned int mipi_enabled;
216 unsigned int dp_enabled;
217 unsigned int cs_setup;
218 unsigned int wr_setup;
220 unsigned int wr_hold;
221 unsigned int logo_on;
222 unsigned int logo_width;
223 unsigned int logo_height;
226 unsigned long logo_addr;
227 unsigned int rgb_mode;
228 unsigned int resolution;
230 /* parent clock name(MPLL, EPLL or VPLL) */
231 unsigned int pclk_name;
232 /* ratio value for source clock from parent clock. */
233 unsigned int sclk_div;
235 unsigned int dual_lcd_enabled;
238 void init_panel_info(vidinfo_t *vid);
242 typedef struct vidinfo {
243 ushort vl_col; /* Number of columns (i.e. 160) */
244 ushort vl_row; /* Number of rows (i.e. 100) */
246 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
248 ushort *cmap; /* Pointer to the colormap */
250 void *priv; /* Pointer to driver-specific data */
253 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_MCC200, CONFIG_ATMEL_LCD */
255 extern vidinfo_t panel_info;
257 /* Video functions */
259 void lcd_putc(const char c);
260 void lcd_puts(const char *s);
261 void lcd_printf(const char *fmt, ...);
262 void lcd_clear(void);
263 int lcd_display_bitmap(ulong bmp_image, int x, int y);
266 * Get the width of the LCD in pixels
268 * @return width of LCD in pixels
270 int lcd_get_pixel_width(void);
273 * Get the height of the LCD in pixels
275 * @return height of LCD in pixels
277 int lcd_get_pixel_height(void);
280 * Get the number of text lines/rows on the LCD
282 * @return number of rows
284 int lcd_get_screen_rows(void);
287 * Get the number of text columns on the LCD
289 * @return number of columns
291 int lcd_get_screen_columns(void);
294 * Set the position of the text cursor
296 * @param col Column to place cursor (0 = left side)
297 * @param row Row to place cursor (0 = top line)
299 void lcd_position_cursor(unsigned col, unsigned row);
301 /* Allow boards to customize the information displayed */
302 void lcd_show_board_info(void);
304 /* Return the size of the LCD frame buffer, and the line length */
305 int lcd_get_size(int *line_length);
307 int lcd_dt_simplefb_add_node(void *blob);
308 int lcd_dt_simplefb_enable_existing_node(void *blob);
310 /* Update the LCD / flush the cache */
313 /************************************************************************/
314 /* ** BITMAP DISPLAY SUPPORT */
315 /************************************************************************/
316 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
317 # include <bmp_layout.h>
318 # include <asm/byteorder.h>
322 * Information about displays we are using. This is for configuring
323 * the LCD controller and memory allocation. Someone has to know what
324 * is connected, as we can't autodetect anything.
326 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
327 #define CONFIG_SYS_LOW 1 /* Pins are active low */
329 #define LCD_MONOCHROME 0
333 #define LCD_COLOR16 4
334 #define LCD_COLOR32 5
335 /*----------------------------------------------------------------------*/
336 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
337 # define LCD_INFO_X 0
338 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
339 #elif defined(CONFIG_LCD_LOGO)
340 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
341 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
343 # define LCD_INFO_X VIDEO_FONT_WIDTH
344 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
347 /* Default to 8bpp if bit depth not specified */
349 # define LCD_BPP LCD_COLOR8
355 /* Calculate nr. of bits per pixel and nr. of colors */
356 #define NBITS(bit_code) (1 << (bit_code))
357 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
359 /************************************************************************/
360 /* ** CONSOLE CONSTANTS */
361 /************************************************************************/
362 #if LCD_BPP == LCD_MONOCHROME
365 * Simple black/white definitions
367 # define CONSOLE_COLOR_BLACK 0
368 # define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
370 #elif LCD_BPP == LCD_COLOR8
373 * 8bpp color definitions
375 # define CONSOLE_COLOR_BLACK 0
376 # define CONSOLE_COLOR_RED 1
377 # define CONSOLE_COLOR_GREEN 2
378 # define CONSOLE_COLOR_YELLOW 3
379 # define CONSOLE_COLOR_BLUE 4
380 # define CONSOLE_COLOR_MAGENTA 5
381 # define CONSOLE_COLOR_CYAN 6
382 # define CONSOLE_COLOR_GREY 14
383 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
385 #elif LCD_BPP == LCD_COLOR32
387 * 32bpp color definitions
389 # define CONSOLE_COLOR_RED 0x00ff0000
390 # define CONSOLE_COLOR_GREEN 0x0000ff00
391 # define CONSOLE_COLOR_YELLOW 0x00ffff00
392 # define CONSOLE_COLOR_BLUE 0x000000ff
393 # define CONSOLE_COLOR_MAGENTA 0x00ff00ff
394 # define CONSOLE_COLOR_CYAN 0x0000ffff
395 # define CONSOLE_COLOR_GREY 0x00aaaaaa
396 # define CONSOLE_COLOR_BLACK 0x00000000
397 # define CONSOLE_COLOR_WHITE 0x00ffffff /* Must remain last / highest*/
398 # define NBYTES(bit_code) (NBITS(bit_code) >> 3)
403 * 16bpp color definitions
405 # define CONSOLE_COLOR_BLACK 0x0000
406 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
408 #endif /* color definitions */
410 /************************************************************************/
412 # define PAGE_SIZE 4096
415 /************************************************************************/