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/*
* (C) Copyright 2012 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <lcd.h>
#include <memalign.h>
#include <phys2bus.h>
#include <asm/arch/mbox.h>
#include <asm/arch/msg.h>
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
/* Global variables that lcd.c expects to exist */
vidinfo_t panel_info;
static int bcm2835_pitch;
void lcd_ctrl_init(void *lcdbase)
{
int ret;
int w, h;
ulong fb_base, fb_size, fb_start, fb_end;
debug("bcm2835: Query resolution...\n");
ret = bcm2835_get_video_size(&w, &h);
if (ret) {
/* FIXME: How to disable the LCD to prevent errors? hang()? */
return;
}
debug("bcm2835: Setting up display for %d x %d\n", w, h);
ret = bcm2835_set_video_params(&w, &h, 32, BCM2835_MBOX_PIXEL_ORDER_RGB,
BCM2835_MBOX_ALPHA_MODE_IGNORED,
&fb_base, &fb_size, &bcm2835_pitch);
debug("bcm2835: Final resolution is %d x %d\n", w, h);
panel_info.vl_col = w;
panel_info.vl_row = h;
panel_info.vl_bpix = LCD_COLOR32;
gd->fb_base = fb_base;
/* Enable dcache for the frame buffer */
fb_start = fb_base & ~(MMU_SECTION_SIZE - 1);
fb_end = fb_base + fb_size;
fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
DCACHE_WRITEBACK);
lcd_set_flush_dcache(1);
}
void lcd_enable(void)
{
}
int lcd_get_size(int *line_length)
{
*line_length = bcm2835_pitch;
return *line_length * panel_info.vl_row;
}
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