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#include <common.h>
#include <fb.h>
#include <errno.h>
#include <command.h>
#include <getopt.h>
#include <fcntl.h>
#include <fs.h>
#include <init.h>
static int fb_ioctl(struct cdev* cdev, int req, void *data)
{
struct fb_info *info = cdev->priv;
switch (req) {
case FBIOGET_SCREENINFO:
memcpy(data, info, sizeof(*info));
break;
case FBIO_ENABLE:
info->fbops->fb_enable(info);
break;
case FBIO_DISABLE:
info->fbops->fb_disable(info);
break;
default:
return -ENOSYS;
}
return 0;
}
static int fb_enable_set(struct device_d *dev, struct param_d *param,
const char *val)
{
struct fb_info *info = dev->priv;
int enable;
char *new;
if (!val)
return dev_param_set_generic(dev, param, NULL);
enable = simple_strtoul(val, NULL, 0);
if (enable) {
if (!info->enabled)
info->fbops->fb_enable(info);
new = "1";
} else {
if (info->enabled)
info->fbops->fb_disable(info);
new = "0";
}
dev_param_set_generic(dev, param, new);
info->enabled = !!enable;
return 0;
}
static int fb_setup_mode(struct device_d *dev, struct param_d *param,
const char *val)
{
struct fb_info *info = dev->priv;
int mode, ret;
if (info->enabled != 0)
return -EPERM;
if (!val)
return dev_param_set_generic(dev, param, NULL);
for (mode = 0; mode < info->num_modes; mode++) {
if (!strcmp(info->mode_list[mode].name, val))
break;
}
if (mode >= info->num_modes)
return -EINVAL;
info->mode = &info->mode_list[mode];
info->xres = info->mode->xres;
info->yres = info->mode->yres;
ret = info->fbops->fb_activate_var(info);
if (!ret) {
dev->resource[0].start = (resource_size_t)info->screen_base;
info->cdev.size = info->xres * info->yres * (info->bits_per_pixel >> 3);
dev->resource[0].end = info->cdev.size - 1;
dev_param_set_generic(dev, param, val);
} else
info->cdev.size = 0;
return ret;
}
static struct file_operations fb_ops = {
.read = mem_read,
.write = mem_write,
.memmap = generic_memmap_rw,
.lseek = dev_lseek_default,
.ioctl = fb_ioctl,
};
int register_framebuffer(struct fb_info *info)
{
int id = get_free_deviceid("fb");
struct device_d *dev;
dev = &info->dev;
info->cdev.ops = &fb_ops;
info->cdev.name = asprintf("fb%d", id);
info->cdev.size = info->xres * info->yres * (info->bits_per_pixel >> 3);
info->cdev.dev = dev;
info->cdev.priv = info;
dev->resource = xzalloc(sizeof(struct resource));
dev->resource[0].start = (resource_size_t)info->screen_base;
dev->resource[0].end = info->cdev.size - 1;
dev->resource[0].flags = IORESOURCE_MEM;
dev->num_resources = 1;
dev->priv = info;
dev->id = id;
sprintf(dev->name, "fb");
register_device(&info->dev);
dev_add_param(dev, "enable", fb_enable_set, NULL, 0);
dev_set_param(dev, "enable", "0");
if (info->num_modes && (info->mode_list != NULL) &&
(info->fbops->fb_activate_var != NULL)) {
dev_add_param(dev, "mode_name", fb_setup_mode, NULL, 0);
dev_set_param(dev, "mode_name", info->mode_list[0].name);
}
devfs_create(&info->cdev);
return 0;
}
static void fb_info(struct device_d *dev)
{
struct fb_info *info = dev->priv;
int i;
if (!info->num_modes)
return;
printf("available modes:\n");
for (i = 0; i < info->num_modes; i++) {
struct fb_videomode *mode = &info->mode_list[i];
printf("%-10s %dx%d@%d\n", mode->name,
mode->xres, mode->yres, mode->refresh);
}
printf("\n");
}
static int fb_probe(struct device_d *hw_dev)
{
return 0;
}
static struct driver_d fb_driver = {
.name = "fb",
.probe = fb_probe,
.info = fb_info,
};
static int fb_init_driver(void)
{
register_driver(&fb_driver);
return 0;
}
device_initcall(fb_init_driver);
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