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/*
* Copyright © 2007 David Airlie
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* David Airlie
*/
/*
* Modularization
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include "drmP.h"
struct drmfb_par {
struct drm_device *dev;
struct drm_framebuffer *fb;
};
static int drmfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *info)
{
struct drmfb_par *par = info->par;
struct drm_framebuffer *fb = par->fb;
if (regno > 17)
return 1;
if (regno < 16) {
switch (fb->depth) {
case 15:
fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
((green & 0xf800) >> 6) |
((blue & 0xf800) >> 11);
break;
case 16:
fb->pseudo_palette[regno] = (red & 0xf800) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
break;
case 24:
case 32:
fb->pseudo_palette[regno] = ((red & 0xff00) << 8) |
(green & 0xff00) |
((blue & 0xff00) >> 8);
break;
}
}
return 0;
}
/* this will let fbcon do the mode init */
static int drmfb_set_par(struct fb_info *info)
{
struct drmfb_par *par = info->par;
struct drm_device *dev = par->dev;
drm_set_desired_modes(dev);
}
static struct fb_ops drmfb_ops = {
.owner = THIS_MODULE,
// .fb_open = drmfb_open,
// .fb_read = drmfb_read,
// .fb_write = drmfb_write,
// .fb_release = drmfb_release,
// .fb_ioctl = drmfb_ioctl,
.fb_set_par = drmfb_set_par,
.fb_setcolreg = drmfb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
int drmfb_probe(struct drm_device *dev, struct drm_framebuffer *fb)
{
struct fb_info *info;
struct drmfb_par *par;
struct device *device = &dev->pdev->dev;
struct fb_var_screeninfo *var_info;
unsigned long base, size;
int ret;
info = framebuffer_alloc(sizeof(struct drmfb_par), device);
if (!info){
return -EINVAL;
}
fb->fbdev = info;
par = info->par;
par->dev = dev;
par->fb = fb;
info->fbops = &drmfb_ops;
strcpy(info->fix.id, "drmfb");
info->fix.smem_start = fb->offset + dev->mode_config.fb_base;
info->fix.smem_len = (8*1024*1024);
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_DIRECTCOLOR;
info->fix.accel = FB_ACCEL_NONE;
info->fix.type_aux = 0;
info->fix.mmio_start = 0;
info->fix.mmio_len = 0;
info->fix.line_length = fb->pitch * ((fb->bits_per_pixel + 1) / 8);
info->flags = FBINFO_DEFAULT;
base = fb->bo->offset + dev->mode_config.fb_base;
size = (fb->bo->mem.num_pages * PAGE_SIZE);
DRM_DEBUG("remapping %08X %d\n", base, size);
ret = drm_mem_reg_ioremap(dev, &fb->bo->mem, &fb->virtual_base);
if (ret)
DRM_ERROR("error mapping fb: %d\n", ret);
info->screen_base = fb->virtual_base;
info->screen_size = size;
info->pseudo_palette = fb->pseudo_palette;
info->var.xres = fb->width;
info->var.xres_virtual = fb->pitch;
info->var.yres = fb->height;
info->var.yres_virtual = fb->height;
info->var.bits_per_pixel = fb->bits_per_pixel;
info->var.xoffset = 0;
info->var.yoffset = 0;
info->var.activate = FB_ACTIVATE_NOW;
info->var.height = -1;
info->var.width = -1;
info->var.vmode = FB_VMODE_NONINTERLACED;
DRM_DEBUG("fb depth is %d\n", fb->depth);
switch(fb->depth) {
case 8:
case 15:
case 16:
break;
default:
case 24:
case 32:
info->var.red.offset = 16;
info->var.green.offset = 8;
info->var.blue.offset = 0;
info->var.red.length = info->var.green.length =
info->var.blue.length = 8;
if (fb->depth == 32) {
info->var.transp.offset = 24;
info->var.transp.length = 8;
}
break;
}
if (register_framebuffer(info) < 0)
return -EINVAL;
printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
info->fix.id);
return 0;
}
EXPORT_SYMBOL(drmfb_probe);
int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
{
struct fb_info *info = fb->fbdev;
if (info) {
iounmap(fb->virtual_base);
unregister_framebuffer(info);
framebuffer_release(info);
}
return 0;
}
EXPORT_SYMBOL(drmfb_remove);
MODULE_LICENSE("GPL");
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