56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
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#include <framebuffer.h>
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typedef unsigned int uint32;
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#define PL110_CR_EN 0x001
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#define PL110_CR_PWR 0x800
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#define PL110_IOBASE 0xc0000000
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#define PL110_PALBASE (PL110_IOBASE + 0x200)
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#define PL110_FB_BASE 0x200000;
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struct pl110_control {
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uint32 volatile timing0; //0
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uint32 volatile timing1; //4
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uint32 volatile timing2; //8
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uint32 volatile timing3; //c
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uint32 volatile upbase; //10
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uint32 volatile lpbase; //14
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uint32 volatile intrenable; //18
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uint32 volatile control; //1c
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};
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struct fbdev pl110_fb_device;
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int pl110_init(struct fb *f, unsigned int color_depth) {
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struct pl110_control *plio = (struct pl110_control*)PL110_IOBASE;
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/* 640x480 pixels */
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plio->timing0 = 0x3f1f3f9c;
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plio->timing1 = 0x080b61df;
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plio->upbase = PL110_FB_BASE;
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if (color_depth == FB_COLOR_DEPTH_8) {
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plio->control = 0x1827;
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} else if (color_depth == FB_COLOR_DEPTH_16) {
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plio->control = 0x1829;
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} else if (color_depth == FB_COLOR_DEPTH_24) {
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plio->control = 0x182B;
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} else {
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//assume 16 if nothing else fit
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color_depth = 16;
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plio->control = 0x1829;
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}
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f->device = &pl110_fb_device;
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f->device->fbaddr = (void*)PL110_FB_BASE;
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f->width = 640;
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f->device->pixelwidth = 640;
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f->height = 480;
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f->device->pixelheight = 480;
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f->color_depth = color_depth;
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f->device->color_depth = color_depth;
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return 0;
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}
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