mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 05:04:26 +00:00
3e446cbdf3
This adds support for the CLCD logic cell. It accepts precompiled register values for specific configuration through a board-supplied data structure. It is used by the Nomadik nhk8815, added by a later patch in this series. Signed-off-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/*
|
|
* 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
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* 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)
|
|
{
|
|
return;
|
|
}
|
|
|
|
/* 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, ®s->cntl);
|
|
|
|
writel(config->tim0, ®s->tim0);
|
|
writel(config->tim1, ®s->tim1);
|
|
writel(config->tim2, ®s->tim2);
|
|
writel(config->tim3, ®s->tim3);
|
|
writel((u32)lcdbase, ®s->ubas);
|
|
/* finally, enable */
|
|
writel(cntl | CNTL_LCDEN, ®s->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;
|
|
}
|