#include <socks/tty.h>
#include "fbcon.h"

#define CELL_WIDTH 8
#define CELL_HEIGHT 16

static void fbcon_init(struct device *dev)
{

}

static void fbcon_deinit(struct device *dev)
{

}

static void fbcon_clear(struct device *dev, int x, int y, int width, int height)
{

}

static void fbcon_putc(struct device *dev, int c, int xpos, int ypos, tty_attrib_t attrib)
{

}

static void fbcon_set_cursor(struct device *dev, enum tty_cursor cur)
{

}

static void fbcon_move_cursor(struct device *dev, int x, int y)
{

}

static void fbcon_scroll(struct device *dev, enum tty_scroll_dir dir, int lines)
{

}


static struct tty_driver_ops fbcon_ops = {
	.tty_init = fbcon_init,
	.tty_deinit = fbcon_deinit,
	.tty_clear = fbcon_clear,
	.tty_putc = fbcon_putc,
	.tty_set_cursor = fbcon_set_cursor,
	.tty_move_cursor = fbcon_move_cursor,
	.tty_scroll = fbcon_scroll,
};

kern_status_t init_fbcon_console(struct device *tty, struct device *fb)
{
	struct char_device *cdev = CHAR_DEVICE(tty);
	struct framebuffer_varinfo fb_mode;
	struct framebuffer_fixedinfo fixedinfo;
	struct tty_device *ttydev = cdev->c_tty;

	struct fbcon_priv *priv = kmalloc(sizeof *priv, VM_NORMAL);
	if (!priv) {
		return KERN_NO_MEMORY;
	}

	kern_status_t status = framebuffer_get_varinfo(fb, &fb_mode);

	if (status != KERN_OK) {
		kfree(priv);
		return status;
	}

	status = framebuffer_get_fixedinfo(fb, &fixedinfo);

	if (status != KERN_OK) {
		kfree(priv);
		return status;
	}

	ttydev->tty_xcells = fb_mode.fb_xres / CELL_WIDTH;
	ttydev->tty_ycells = fb_mode.fb_yres / CELL_HEIGHT;
	ttydev->tty_xcur = 0;
	ttydev->tty_ycur = 0;

	priv->fbdev = fb;
	priv->fb_pitch = fb_mode.fb_stride;
	priv->fb_pixels = vm_phys_to_virt(fixedinfo.fb_baseptr);
	priv->tty_ops = &fbcon_ops;
	tty->dev_priv = priv;

	return KERN_OK;
}