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devices -> drivers

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This commit is contained in:
Aaron Lindsay
2012-10-03 23:30:19 -04:00
parent 9b66a78569
commit 3f624153e7
15 changed files with 7 additions and 7 deletions
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drivers/pl111.c Normal file
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/*
Copyright (C) 2012, Aaron Lindsay <aaron@aclindsay.com>
This file is part of Aedrix.
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <types.h>
#include <framebuffer.h>
#include <mm.h>
#include <math.h>
#define PL111_CR_EN 0x001
#define PL111_CR_PWR 0x800
#define PL111_IOBASE 0x10020000
#define PL111_PALBASE (PL111_IOBASE + 0x200)
struct pl111_control {
uint32 volatile timing0; //0
uint32 volatile timing1; //4
uint32 volatile timing2; //8
uint32 volatile timing3; //c
uint32 volatile upbase; //10
uint32 volatile lpbase; //14
uint32 volatile control; //18
};
struct fbdev pl111_fb_device;
int pl111_init(struct fb *f, unsigned int color_depth) {
unsigned int width, height;
unsigned int fb_size, power;
struct pl111_control *plio = (struct pl111_control*)PL111_IOBASE;
struct page *p;
/* 640x480 pixels */
width = 640;
height = 480;
plio->timing0 = 0x3f1f3f9c;
plio->timing1 = 0x080b61df;
/* Allocate memory for framebuffer */
fb_size = width * height * (color_depth / 8);
power = log(fb_size) - log(MM_PAGE_SIZE);
if ((unsigned int)1<<power < fb_size)
power++;
p = mm_get_free_pages(power);
if (!p)
return -1;
plio->upbase = (uint32)p->address;
if (color_depth == FB_COLOR_DEPTH_8) {
plio->control = 0x1827;
} else if (color_depth == FB_COLOR_DEPTH_16) {
plio->control = 0x1829;
} else if (color_depth == FB_COLOR_DEPTH_24) {
plio->control = 0x182B;
} else {
//assume 16 if nothing else fit
color_depth = 16;
plio->control = 0x1829;
}
f->device = &pl111_fb_device;
f->device->fbaddr = (void*)plio->upbase;
f->width = width;
f->device->pixelwidth = width;
f->height = height;
f->device->pixelheight = height;
f->color_depth = color_depth;
f->device->color_depth = color_depth;
return 0;
}