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#include <common.h>
#include <malloc.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 param_d *param, void *priv)
{
struct fb_info *info = priv;
int enable;
enable = info->p_enable;
if (enable == info->enabled)
return 0;
if (enable)
info->fbops->fb_enable(info);
else
info->fbops->fb_disable(info);
info->enabled = enable;
return 0;
}
static struct fb_videomode *fb_num_to_mode(struct fb_info *info, int num)
{
int num_modes;
num_modes = info->modes.num_modes + info->edid_modes.num_modes;
if (num >= num_modes)
return NULL;
if (num >= info->modes.num_modes)
return &info->edid_modes.modes[num - info->modes.num_modes];
return &info->modes.modes[num];
}
static int fb_setup_mode(struct fb_info *info)
{
struct device_d *dev = &info->dev;
int ret;
struct fb_videomode *mode;
if (info->enabled != 0)
return -EPERM;
mode = fb_num_to_mode(info, info->current_mode);
if (!mode)
return -EINVAL;
info->mode = mode;
info->xres = info->mode->xres;
info->yres = info->mode->yres;
info->line_length = 0;
if (info->fbops->fb_activate_var) {
ret = info->fbops->fb_activate_var(info);
if (ret) {
info->cdev.size = 0;
return ret;
}
}
if (!info->line_length)
info->line_length = info->xres * (info->bits_per_pixel >> 3);
if (!info->screen_size)
info->screen_size = info->line_length * info->yres;
dev->resource[0].start = (resource_size_t)info->screen_base;
info->cdev.size = info->line_length * info->yres;
dev->resource[0].end = dev->resource[0].start + info->cdev.size - 1;
return 0;
}
static int fb_set_modename(struct param_d *param, void *priv)
{
struct fb_info *info = priv;
int ret;
ret = fb_setup_mode(info);
if (ret)
return ret;
return 0;
}
static struct file_operations fb_ops = {
.read = mem_read,
.write = mem_write,
.memmap = generic_memmap_rw,
.lseek = dev_lseek_default,
.ioctl = fb_ioctl,
};
static void fb_print_mode(struct fb_videomode *mode)
{
printf("%-20s %dx%d@%d\n", mode->name,
mode->xres, mode->yres, mode->refresh);
}
static void fb_print_modes(struct display_timings *modes)
{
int i;
for (i = 0; i < modes->num_modes; i++)
fb_print_mode(&modes->modes[i]);
}
static void fb_info(struct device_d *dev)
{
struct fb_info *info = dev->priv;
printf("available modes:\n");
fb_print_modes(&info->modes);
fb_print_modes(&info->edid_modes);
printf("\n");
}
int register_framebuffer(struct fb_info *info)
{
int id = get_free_deviceid("fb");
struct device_d *dev;
int ret, num_modes, i;
const char **names;
dev = &info->dev;
/*
* If info->mode is set at this point it's the only mode
* the fb supports. move it over to the modes list.
*/
if (info->mode) {
info->modes.modes = info->mode;
info->modes.num_modes = 1;
}
if (!info->line_length)
info->line_length = info->xres * (info->bits_per_pixel >> 3);
info->cdev.ops = &fb_ops;
info->cdev.name = asprintf("fb%d", id);
info->cdev.size = info->line_length * info->yres;
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 = dev->resource[0].start + info->cdev.size - 1;
dev->resource[0].flags = IORESOURCE_MEM;
dev->num_resources = 1;
dev->priv = info;
dev->id = id;
dev->info = fb_info;
sprintf(dev->name, "fb");
ret = register_device(&info->dev);
if (ret)
goto err_free;
dev_add_param_bool(dev, "enable", fb_enable_set, NULL,
&info->p_enable, info);
if (IS_ENABLED(CONFIG_DRIVER_VIDEO_EDID))
fb_edid_add_modes(info);
num_modes = info->modes.num_modes + info->edid_modes.num_modes;
names = xzalloc(sizeof(char *) * num_modes);
for (i = 0; i < info->modes.num_modes; i++)
names[i] = info->modes.modes[i].name;
for (i = 0; i < info->edid_modes.num_modes; i++)
names[i + info->modes.num_modes] = info->edid_modes.modes[i].name;
dev_add_param_enum(dev, "mode_name", fb_set_modename, NULL, &info->current_mode, names, num_modes, info);
info->mode = fb_num_to_mode(info, 0);
fb_setup_mode(info);
ret = devfs_create(&info->cdev);
if (ret)
goto err_unregister;
if (IS_ENABLED(CONFIG_DRIVER_VIDEO_SIMPLEFB)) {
ret = fb_register_simplefb(info);
if (ret)
dev_err(&info->dev, "failed to register simplefb: %s\n",
strerror(-ret));
}
return 0;
err_unregister:
unregister_device(&info->dev);
err_free:
free(dev->resource);
return ret;
}
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