mirror of
https://github.com/brain-hackers/u-boot-brain
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39cf480484
This patch adds support for the ATMEL LCDC driver which is used on some AT91 and AVR platforms. Is has been tested with the AT91CAP9ADK, AT91SAM9261EK, AT91SAM9263EK and AT91SAM9RLEK boards. Adaptation for AVR32 should probably be easy. Signed-off-by: Stelian Pop <stelian@popies.net> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
319 lines
9.4 KiB
C
319 lines
9.4 KiB
C
/*
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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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#elif defined(CONFIG_MCC200)
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typedef struct vidinfo {
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ushort vl_col; /* Number of columns (i.e. 160) */
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ushort vl_row; /* Number of rows (i.e. 100) */
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u_char vl_bpix; /* Bits per pixel, 0 = 1 */
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} vidinfo_t;
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#elif defined(CONFIG_ATMEL_LCD)
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typedef struct vidinfo {
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u_long vl_col; /* Number of columns (i.e. 640) */
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u_long vl_row; /* Number of rows (i.e. 480) */
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u_long vl_clk; /* pixel clock in ps */
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/* LCD configuration register */
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u_long vl_sync; /* Horizontal / vertical sync */
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u_long vl_bpix; /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
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u_long vl_tft; /* 0 = passive, 1 = TFT */
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/* Horizontal control register. */
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u_long vl_hsync_len; /* Length of horizontal sync */
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u_long vl_left_margin; /* Time from sync to picture */
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u_long vl_right_margin; /* Time from picture to sync */
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/* Vertical control register. */
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u_long vl_vsync_len; /* Length of vertical sync */
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u_long vl_upper_margin; /* Time from sync to picture */
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u_long vl_lower_margin; /* Time from picture to sync */
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u_long mmio; /* Memory mapped registers */
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} vidinfo_t;
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extern vidinfo_t panel_info;
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#endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 or CONFIG_ATMEL_LCD */
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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 defined(CONFIG_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
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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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