284 lines
8.4 KiB
C
284 lines
8.4 KiB
C
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/*
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* MPC823 and PXA LCD Controller
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*
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* Modeled after video interface by Paolo Scaffardi
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*
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*
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* (C) Copyright 2001
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef _LCD_H_
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#define _LCD_H_
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extern char lcd_is_enabled;
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extern int lcd_line_length;
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extern int lcd_color_fg;
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extern int lcd_color_bg;
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/*
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* Frame buffer memory information
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*/
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extern void *lcd_base; /* Start of framebuffer memory */
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extern void *lcd_console_address; /* Start of console buffer */
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extern short console_col;
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extern short console_row;
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#if defined CONFIG_MPC823
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/*
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* LCD controller stucture for MPC823 CPU
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*/
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typedef struct vidinfo {
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ushort vl_col; /* Number of columns (i.e. 640) */
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ushort vl_row; /* Number of rows (i.e. 480) */
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ushort vl_width; /* Width of display area in millimeters */
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ushort vl_height; /* Height of display area in millimeters */
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/* LCD configuration register */
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u_char vl_clkp; /* Clock polarity */
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u_char vl_oep; /* Output Enable polarity */
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u_char vl_hsp; /* Horizontal Sync polarity */
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u_char vl_vsp; /* Vertical Sync polarity */
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u_char vl_dp; /* Data polarity */
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u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
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u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
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u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
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u_char vl_clor; /* Color, 0 = mono, 1 = color */
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u_char vl_tft; /* 0 = passive, 1 = TFT */
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/* Horizontal control register. Timing from data sheet */
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ushort vl_wbl; /* Wait between lines */
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/* Vertical control register */
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u_char vl_vpw; /* Vertical sync pulse width */
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u_char vl_lcdac; /* LCD AC timing */
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u_char vl_wbf; /* Wait between frames */
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} vidinfo_t;
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extern vidinfo_t panel_info;
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#elif defined CONFIG_PXA250
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/*
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* PXA LCD DMA descriptor
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*/
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struct pxafb_dma_descriptor {
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u_long fdadr; /* Frame descriptor address register */
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u_long fsadr; /* Frame source address register */
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u_long fidr; /* Frame ID register */
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u_long ldcmd; /* Command register */
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};
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/*
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* PXA LCD info
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*/
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struct pxafb_info {
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/* Misc registers */
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u_long reg_lccr3;
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u_long reg_lccr2;
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u_long reg_lccr1;
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u_long reg_lccr0;
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u_long fdadr0;
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u_long fdadr1;
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/* DMA descriptors */
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struct pxafb_dma_descriptor * dmadesc_fblow;
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struct pxafb_dma_descriptor * dmadesc_fbhigh;
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struct pxafb_dma_descriptor * dmadesc_palette;
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u_long screen; /* physical address of frame buffer */
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u_long palette; /* physical address of palette memory */
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u_int palette_size;
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};
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/*
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* LCD controller stucture for PXA CPU
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*/
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typedef struct vidinfo {
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ushort vl_col; /* Number of columns (i.e. 640) */
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ushort vl_row; /* Number of rows (i.e. 480) */
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ushort vl_width; /* Width of display area in millimeters */
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ushort vl_height; /* Height of display area in millimeters */
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/* LCD configuration register */
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u_char vl_clkp; /* Clock polarity */
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u_char vl_oep; /* Output Enable polarity */
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u_char vl_hsp; /* Horizontal Sync polarity */
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u_char vl_vsp; /* Vertical Sync polarity */
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u_char vl_dp; /* Data polarity */
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u_char vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
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u_char vl_lbw; /* LCD Bus width, 0 = 4, 1 = 8 */
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u_char vl_splt; /* Split display, 0 = single-scan, 1 = dual-scan */
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u_char vl_clor; /* Color, 0 = mono, 1 = color */
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u_char vl_tft; /* 0 = passive, 1 = TFT */
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/* Horizontal control register. Timing from data sheet */
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ushort vl_hpw; /* Horz sync pulse width */
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u_char vl_blw; /* Wait before of line */
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u_char vl_elw; /* Wait end of line */
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/* Vertical control register. */
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u_char vl_vpw; /* Vertical sync pulse width */
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u_char vl_bfw; /* Wait before of frame */
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u_char vl_efw; /* Wait end of frame */
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/* PXA LCD controller params */
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struct pxafb_info pxa;
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} vidinfo_t;
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extern vidinfo_t panel_info;
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#endif /* CONFIG_MPC823 or CONFIG_PXA250 */
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/* Video functions */
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#if defined(CONFIG_RBC823)
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void lcd_disable (void);
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#endif
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/* int lcd_init (void *lcdbase); */
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void lcd_putc (const char c);
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void lcd_puts (const char *s);
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void lcd_printf (const char *fmt, ...);
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/************************************************************************/
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/* ** BITMAP DISPLAY SUPPORT */
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/************************************************************************/
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#if (CONFIG_COMMANDS & CFG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
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# include <bmp_layout.h>
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# include <asm/byteorder.h>
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#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) || CONFIG_SPLASH_SCREEN */
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/*
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* Information about displays we are using. This is for configuring
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* the LCD controller and memory allocation. Someone has to know what
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* is connected, as we can't autodetect anything.
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*/
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#define CFG_HIGH 0 /* Pins are active high */
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#define CFG_LOW 1 /* Pins are active low */
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#define LCD_MONOCHROME 0
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#define LCD_COLOR2 1
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#define LCD_COLOR4 2
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#define LCD_COLOR8 3
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#define LCD_COLOR16 4
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/*----------------------------------------------------------------------*/
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#if defined(CONFIG_LCD_INFO_BELOW_LOGO)
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# define LCD_INFO_X 0
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# define LCD_INFO_Y (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
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#elif defined(CONFIG_LCD_LOGO)
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# define LCD_INFO_X (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
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# define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
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#else
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# define LCD_INFO_X (VIDEO_FONT_WIDTH)
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# define LCD_INFO_Y (VIDEO_FONT_HEIGHT)
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#endif
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/* Default to 8bpp if bit depth not specified */
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#ifndef LCD_BPP
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# define LCD_BPP LCD_COLOR8
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#endif
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#ifndef LCD_DF
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# define LCD_DF 1
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#endif
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/* Calculate nr. of bits per pixel and nr. of colors */
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#define NBITS(bit_code) (1 << (bit_code))
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#define NCOLORS(bit_code) (1 << NBITS(bit_code))
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/************************************************************************/
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/* ** CONSOLE CONSTANTS */
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/************************************************************************/
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#if LCD_BPP == LCD_MONOCHROME
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/*
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* Simple black/white definitions
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*/
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# define CONSOLE_COLOR_BLACK 0
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# define CONSOLE_COLOR_WHITE 1 /* Must remain last / highest */
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#elif LCD_BPP == LCD_COLOR8
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/*
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* 8bpp color definitions
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*/
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# define CONSOLE_COLOR_BLACK 0
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# define CONSOLE_COLOR_RED 1
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# define CONSOLE_COLOR_GREEN 2
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# define CONSOLE_COLOR_YELLOW 3
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# define CONSOLE_COLOR_BLUE 4
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# define CONSOLE_COLOR_MAGENTA 5
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# define CONSOLE_COLOR_CYAN 6
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# define CONSOLE_COLOR_GREY 14
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# define CONSOLE_COLOR_WHITE 15 /* Must remain last / highest */
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#else
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/*
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* 16bpp color definitions
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*/
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# define CONSOLE_COLOR_BLACK 0x0000
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# define CONSOLE_COLOR_WHITE 0xffff /* Must remain last / highest */
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#endif /* color definitions */
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/************************************************************************/
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#ifndef PAGE_SIZE
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# define PAGE_SIZE 4096
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#endif
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/************************************************************************/
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/* ** CONSOLE DEFINITIONS & FUNCTIONS */
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/************************************************************************/
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#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
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# define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
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/ VIDEO_FONT_HEIGHT)
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#else
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# define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
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#endif
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#define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
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#define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
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#define CONSOLE_ROW_FIRST (lcd_console_address)
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#define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
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#define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
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- CONSOLE_ROW_SIZE)
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#define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
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#define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
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#if LCD_BPP == LCD_MONOCHROME
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# define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
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(c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
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#elif LCD_BPP == LCD_COLOR8
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# define COLOR_MASK(c) (c)
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#else
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# error Unsupported LCD BPP.
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#endif
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/************************************************************************/
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#endif /* _LCD_H_ */
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