blob: ffa1c399e1418d797084012580f0d8c3e4dabea2 [file] [log] [blame]
* Driver for AMBA PrimeCell CLCD
* Copyright (C) 2009 Alessandro Rubini
* See file CREDITS for list of people who contributed to this
* project.
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
#include <common.h>
#include <asm/io.h>
#include <lcd.h>
#include <amba_clcd.h>
/* These variables are required by lcd.c -- although it sets them by itself */
int lcd_line_length;
int lcd_color_fg;
int lcd_color_bg;
void *lcd_base;
void *lcd_console_address;
short console_col;
short console_row;
* To use this driver you need to provide the following in board files:
* a panel_info definition
* an lcd_enable function (can't define a weak default with current code)
/* There is nothing to do with color registers, we use true color */
void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
/* Low level initialization of the logic cell: depends on panel_info */
void lcd_ctrl_init(void *lcdbase)
struct clcd_config *config;
struct clcd_registers *regs;
u32 cntl;
config = panel_info.priv;
regs = config->address;
cntl = config->cntl & ~CNTL_LCDEN;
/* Lazily, just copy the registers over: first control with disable */
writel(cntl, &regs->cntl);
writel(config->tim0, &regs->tim0);
writel(config->tim1, &regs->tim1);
writel(config->tim2, &regs->tim2);
writel(config->tim3, &regs->tim3);
writel((u32)lcdbase, &regs->ubas);
/* finally, enable */
writel(cntl | CNTL_LCDEN, &regs->cntl);
/* This is trivial, and copied from atmel_lcdfb.c */
ulong calc_fbsize(void)
return ((panel_info.vl_col * panel_info.vl_row *
NBITS(panel_info.vl_bpix)) / 8) + PAGE_SIZE;