80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
/*
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* Driver for AMBA PrimeCell CLCD
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*
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* Copyright (C) 2009 Alessandro Rubini
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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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#include <common.h>
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#include <asm/io.h>
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#include <lcd.h>
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#include <amba_clcd.h>
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/* These variables are required by lcd.c -- although it sets them by itself */
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int lcd_line_length;
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int lcd_color_fg;
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int lcd_color_bg;
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void *lcd_base;
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void *lcd_console_address;
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short console_col;
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short console_row;
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/*
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* To use this driver you need to provide the following in board files:
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* a panel_info definition
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* an lcd_enable function (can't define a weak default with current code)
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*/
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/* There is nothing to do with color registers, we use true color */
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void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
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{
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return;
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}
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/* Low level initialization of the logic cell: depends on panel_info */
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void lcd_ctrl_init(void *lcdbase)
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{
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struct clcd_config *config;
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struct clcd_registers *regs;
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u32 cntl;
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config = panel_info.priv;
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regs = config->address;
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cntl = config->cntl & ~CNTL_LCDEN;
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/* Lazily, just copy the registers over: first control with disable */
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writel(cntl, ®s->cntl);
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writel(config->tim0, ®s->tim0);
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writel(config->tim1, ®s->tim1);
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writel(config->tim2, ®s->tim2);
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writel(config->tim3, ®s->tim3);
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writel((u32)lcdbase, ®s->ubas);
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/* finally, enable */
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writel(cntl | CNTL_LCDEN, ®s->cntl);
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}
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/* This is trivial, and copied from atmel_lcdfb.c */
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ulong calc_fbsize(void)
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{
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return ((panel_info.vl_col * panel_info.vl_row *
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NBITS(panel_info.vl_bpix)) / 8) + PAGE_SIZE;
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}
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