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+
15 #include <lcd_console.h>
17 extern char lcd_is_enabled;
19 extern int lcd_line_length;
21 extern struct vidinfo panel_info;
23 void lcd_ctrl_init(void *lcdbase);
24 void lcd_enable(void);
26 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
27 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue);
28 void lcd_initcolregs(void);
30 /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
31 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
33 int bmp_display(ulong addr, int x, int y);
36 * Set whether we need to flush the dcache when changing the LCD image. This
39 * @param flush non-zero to flush cache after update, 0 to skip
41 void lcd_set_flush_dcache(int flush);
43 #if defined CONFIG_MPC823
45 * LCD controller stucture for MPC823 CPU
47 typedef struct vidinfo {
48 ushort vl_col; /* Number of columns (i.e. 640) */
49 ushort vl_row; /* Number of rows (i.e. 480) */
50 ushort vl_width; /* Width of display area in millimeters */
51 ushort vl_height; /* Height of display area in millimeters */
53 /* LCD configuration register */
54 u_char vl_clkp; /* Clock polarity */
55 u_char vl_oep; /* Output Enable polarity */
56 u_char vl_hsp; /* Horizontal Sync polarity */
57 u_char vl_vsp; /* Vertical Sync polarity */
58 u_char vl_dp; /* Data polarity */
59 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
60 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
61 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
62 u_char vl_clor; /* Color, 0 = mono, 1 = color */
63 u_char vl_tft; /* 0 = passive, 1 = TFT */
65 /* Horizontal control register. Timing from data sheet */
66 ushort vl_wbl; /* Wait between lines */
68 /* Vertical control register */
69 u_char vl_vpw; /* Vertical sync pulse width */
70 u_char vl_lcdac; /* LCD AC timing */
71 u_char vl_wbf; /* Wait between frames */
74 #elif defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
75 defined CONFIG_CPU_MONAHANS
77 * PXA LCD DMA descriptor
79 struct pxafb_dma_descriptor {
80 u_long fdadr; /* Frame descriptor address register */
81 u_long fsadr; /* Frame source address register */
82 u_long fidr; /* Frame ID register */
83 u_long ldcmd; /* Command register */
100 struct pxafb_dma_descriptor * dmadesc_fblow;
101 struct pxafb_dma_descriptor * dmadesc_fbhigh;
102 struct pxafb_dma_descriptor * dmadesc_palette;
104 u_long screen; /* physical address of frame buffer */
105 u_long palette; /* physical address of palette memory */
110 * LCD controller stucture for PXA CPU
112 typedef struct vidinfo {
113 ushort vl_col; /* Number of columns (i.e. 640) */
114 ushort vl_row; /* Number of rows (i.e. 480) */
115 ushort vl_width; /* Width of display area in millimeters */
116 ushort vl_height; /* Height of display area in millimeters */
118 /* LCD configuration register */
119 u_char vl_clkp; /* Clock polarity */
120 u_char vl_oep; /* Output Enable polarity */
121 u_char vl_hsp; /* Horizontal Sync polarity */
122 u_char vl_vsp; /* Vertical Sync polarity */
123 u_char vl_dp; /* Data polarity */
124 u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
125 u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
126 u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
127 u_char vl_clor; /* Color, 0 = mono, 1 = color */
128 u_char vl_tft; /* 0 = passive, 1 = TFT */
130 /* Horizontal control register. Timing from data sheet */
131 ushort vl_hpw; /* Horz sync pulse width */
132 u_char vl_blw; /* Wait before of line */
133 u_char vl_elw; /* Wait end of line */
135 /* Vertical control register. */
136 u_char vl_vpw; /* Vertical sync pulse width */
137 u_char vl_bfw; /* Wait before of frame */
138 u_char vl_efw; /* Wait end of frame */
140 /* PXA LCD controller params */
141 struct pxafb_info pxa;
144 #elif defined(CONFIG_ATMEL_LCD) || defined(CONFIG_ATMEL_HLCD)
146 typedef struct vidinfo {
147 ushort vl_col; /* Number of columns (i.e. 640) */
148 ushort vl_row; /* Number of rows (i.e. 480) */
149 u_long vl_clk; /* pixel clock in ps */
151 /* LCD configuration register */
152 u_long vl_sync; /* Horizontal / vertical sync */
153 u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
154 u_long vl_tft; /* 0 = passive, 1 = TFT */
155 u_long vl_cont_pol_low; /* contrast polarity is low */
156 u_long vl_clk_pol; /* clock polarity */
158 /* Horizontal control register. */
159 u_long vl_hsync_len; /* Length of horizontal sync */
160 u_long vl_left_margin; /* Time from sync to picture */
161 u_long vl_right_margin; /* Time from picture to sync */
163 /* Vertical control register. */
164 u_long vl_vsync_len; /* Length of vertical sync */
165 u_long vl_upper_margin; /* Time from sync to picture */
166 u_long vl_lower_margin; /* Time from picture to sync */
168 u_long mmio; /* Memory mapped registers */
171 #elif defined(CONFIG_EXYNOS_FB)
174 FIMD_RGB_INTERFACE = 1,
175 FIMD_CPU_INTERFACE = 2,
178 enum exynos_fb_rgb_mode_t {
185 typedef struct vidinfo {
186 ushort vl_col; /* Number of columns (i.e. 640) */
187 ushort vl_row; /* Number of rows (i.e. 480) */
188 ushort vl_width; /* Width of display area in millimeters */
189 ushort vl_height; /* Height of display area in millimeters */
191 /* LCD configuration register */
192 u_char vl_freq; /* Frequency */
193 u_char vl_clkp; /* Clock polarity */
194 u_char vl_oep; /* Output Enable polarity */
195 u_char vl_hsp; /* Horizontal Sync polarity */
196 u_char vl_vsp; /* Vertical Sync polarity */
197 u_char vl_dp; /* Data polarity */
198 u_char vl_bpix; /* Bits per pixel */
200 /* Horizontal control register. Timing from data sheet */
201 u_char vl_hspw; /* Horz sync pulse width */
202 u_char vl_hfpd; /* Wait before of line */
203 u_char vl_hbpd; /* Wait end of line */
205 /* Vertical control register. */
206 u_char vl_vspw; /* Vertical sync pulse width */
207 u_char vl_vfpd; /* Wait before of frame */
208 u_char vl_vbpd; /* Wait end of frame */
209 u_char vl_cmd_allow_len; /* Wait end of frame */
212 unsigned int init_delay;
213 unsigned int power_on_delay;
214 unsigned int reset_delay;
215 unsigned int interface_mode;
216 unsigned int mipi_enabled;
217 unsigned int dp_enabled;
218 unsigned int cs_setup;
219 unsigned int wr_setup;
221 unsigned int wr_hold;
222 unsigned int logo_on;
223 unsigned int logo_width;
224 unsigned int logo_height;
227 unsigned long logo_addr;
228 unsigned int rgb_mode;
229 unsigned int resolution;
231 /* parent clock name(MPLL, EPLL or VPLL) */
232 unsigned int pclk_name;
233 /* ratio value for source clock from parent clock. */
234 unsigned int sclk_div;
236 unsigned int dual_lcd_enabled;
239 void init_panel_info(vidinfo_t *vid);
243 typedef struct vidinfo {
244 ushort vl_col; /* Number of columns (i.e. 160) */
245 ushort vl_row; /* Number of rows (i.e. 100) */
247 u_char vl_bpix; /* Bits per pixel, 0 = 1 */
249 ushort *cmap; /* Pointer to the colormap */
251 void *priv; /* Pointer to driver-specific data */
254 #endif /* CONFIG_MPC823, CONFIG_CPU_PXA25X, CONFIG_ATMEL_LCD */
256 extern vidinfo_t panel_info;
258 /* Video functions */
260 void lcd_putc(const char c);
261 void lcd_puts(const char *s);
262 void lcd_printf(const char *fmt, ...);
263 void lcd_clear(void);
264 int lcd_display_bitmap(ulong bmp_image, int x, int y);
267 * Get the width of the LCD in pixels
269 * @return width of LCD in pixels
271 int lcd_get_pixel_width(void);
274 * Get the height of the LCD in pixels
276 * @return height of LCD in pixels
278 int lcd_get_pixel_height(void);
281 * Get the number of text lines/rows on the LCD
283 * @return number of rows
285 int lcd_get_screen_rows(void);
288 * Get the number of text columns on the LCD
290 * @return number of columns
292 int lcd_get_screen_columns(void);
295 * Get the background color of the LCD
297 * @return background color value
299 int lcd_getbgcolor(void);
302 * Get the foreground color of the LCD
304 * @return foreground color value
306 int lcd_getfgcolor(void);
309 * Set the position of the text cursor
311 * @param col Column to place cursor (0 = left side)
312 * @param row Row to place cursor (0 = top line)
314 void lcd_position_cursor(unsigned col, unsigned row);
316 /* Allow boards to customize the information displayed */
317 void lcd_show_board_info(void);
319 /* Return the size of the LCD frame buffer, and the line length */
320 int lcd_get_size(int *line_length);
322 int lcd_dt_simplefb_add_node(void *blob);
323 int lcd_dt_simplefb_enable_existing_node(void *blob);
325 /* Update the LCD / flush the cache */
328 /************************************************************************/
329 /* ** BITMAP DISPLAY SUPPORT */
330 /************************************************************************/
331 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
332 # include <bmp_layout.h>
333 # include <asm/byteorder.h>
337 * Information about displays we are using. This is for configuring
338 * the LCD controller and memory allocation. Someone has to know what
339 * is connected, as we can't autodetect anything.
341 #define CONFIG_SYS_HIGH 0 /* Pins are active high */
342 #define CONFIG_SYS_LOW 1 /* Pins are active low */
344 #define LCD_MONOCHROME 0
348 #define LCD_COLOR16 4
349 #define LCD_COLOR32 5
350 /*----------------------------------------------------------------------*/
351 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
352 # define LCD_INFO_X 0
353 # define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
354 #elif defined(CONFIG_LCD_LOGO)
355 # define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
356 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
358 # define LCD_INFO_X VIDEO_FONT_WIDTH
359 # define LCD_INFO_Y VIDEO_FONT_HEIGHT
362 /* Default to 8bpp if bit depth not specified */
364 # define LCD_BPP LCD_COLOR8
370 /* Calculate nr. of bits per pixel and nr. of colors */
371 #define NBITS(bit_code) (1 << (bit_code))
372 #define NCOLORS(bit_code) (1 << NBITS(bit_code))
374 /************************************************************************/
375 /* ** CONSOLE CONSTANTS */
376 /************************************************************************/
377 #if LCD_BPP == LCD_COLOR8
380 * 8bpp color definitions
382 # define CONSOLE_COLOR_BLACK 0
383 # define CONSOLE_COLOR_RED 1
384 # define CONSOLE_COLOR_GREEN 2
385 # define CONSOLE_COLOR_YELLOW 3
386 # define CONSOLE_COLOR_BLUE 4
387 # define CONSOLE_COLOR_MAGENTA 5
388 # define CONSOLE_COLOR_CYAN 6
389 # define CONSOLE_COLOR_GREY 14
390 # define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
392 #elif LCD_BPP == LCD_COLOR32
394 * 32bpp color definitions
396 # define CONSOLE_COLOR_RED 0x00ff0000
397 # define CONSOLE_COLOR_GREEN 0x0000ff00
398 # define CONSOLE_COLOR_YELLOW 0x00ffff00
399 # define CONSOLE_COLOR_BLUE 0x000000ff
400 # define CONSOLE_COLOR_MAGENTA 0x00ff00ff
401 # define CONSOLE_COLOR_CYAN 0x0000ffff
402 # define CONSOLE_COLOR_GREY 0x00aaaaaa
403 # define CONSOLE_COLOR_BLACK 0x00000000
404 # define CONSOLE_COLOR_WHITE 0x00ffffff /* Must remain last / highest*/
405 # define NBYTES(bit_code) (NBITS(bit_code) >> 3)
410 * 16bpp color definitions
412 # define CONSOLE_COLOR_BLACK 0x0000
413 # define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
415 #endif /* color definitions */
417 /************************************************************************/
419 # define PAGE_SIZE 4096
422 /************************************************************************/