linux-imx

/* cg3.c: CGTHREE frame buffer driver

 *

 * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)

 * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)

 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)

 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)

 *

 * Driver layout based loosely on tgafb.c, see that file for credits.

 */

​

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/errno.h>

#include <linux/string.h>

#include <linux/delay.h>

#include <linux/init.h>

#include <linux/fb.h>

#include <linux/mm.h>

#include <linux/of_device.h>

​

#include <asm/io.h>

#include <asm/fbio.h>

​

#include "sbuslib.h"

​

/*

 * Local functions.

 */

​

static int cg3_setcolreg(unsigned, unsigned, unsigned, unsigned,

             unsigned, struct fb_info *);

static int cg3_blank(int, struct fb_info *);

​

static int cg3_mmap(struct fb_info *, struct vm_area_struct *);

static int cg3_ioctl(struct fb_info *, unsigned int, unsigned long);

​

/*

 *  Frame buffer operations

 */

​

static struct fb_ops cg3_ops = {

    .owner          = THIS_MODULE,

    .fb_setcolreg       = cg3_setcolreg,

    .fb_blank       = cg3_blank,

    .fb_fillrect        = cfb_fillrect,

    .fb_copyarea        = cfb_copyarea,

    .fb_imageblit       = cfb_imageblit,

    .fb_mmap        = cg3_mmap,

    .fb_ioctl       = cg3_ioctl,

#ifdef CONFIG_COMPAT

    .fb_compat_ioctl    = sbusfb_compat_ioctl,

#endif

};

​

​

/* Control Register Constants */

#define CG3_CR_ENABLE_INTS      0x80

#define CG3_CR_ENABLE_VIDEO     0x40

#define CG3_CR_ENABLE_TIMING    0x20

#define CG3_CR_ENABLE_CURCMP    0x10

#define CG3_CR_XTAL_MASK        0x0c

#define CG3_CR_DIVISOR_MASK     0x03

​