[linux-2.6-block.git] / drivers / video / leo.c

/* leo.c: LEO frame buffer driver
 *
 * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
 * Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz)
 * Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz)
 *
 * 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/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/fb.h>
#include <linux/mm.h>

#include <asm/io.h>
#include <asm/prom.h>
#include <asm/of_device.h>
#include <asm/fbio.h>

#include "sbuslib.h"

/*
 * Local functions.
 */

static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
			 unsigned, struct fb_info *);
static int leo_blank(int, struct fb_info *);

static int leo_mmap(struct fb_info *, struct vm_area_struct *);
static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);

/*
 *  Frame buffer operations
 */

static struct fb_ops leo_ops = {
	.owner			= THIS_MODULE,
	.fb_setcolreg		= leo_setcolreg,
	.fb_blank		= leo_blank,
	.fb_pan_display		= leo_pan_display,
	.fb_fillrect		= cfb_fillrect,
	.fb_copyarea		= cfb_copyarea,
	.fb_imageblit		= cfb_imageblit,
	.fb_mmap		= leo_mmap,
	.fb_ioctl		= leo_ioctl,
#ifdef CONFIG_COMPAT
	.fb_compat_ioctl	= sbusfb_compat_ioctl,
#endif
};

#define LEO_OFF_LC_SS0_KRN	0x00200000UL
#define LEO_OFF_LC_SS0_USR	0x00201000UL
#define LEO_OFF_LC_SS1_KRN	0x01200000UL
#define LEO_OFF_LC_SS1_USR	0x01201000UL
#define LEO_OFF_LD_SS0		0x00400000UL
#define LEO_OFF_LD_SS1		0x01400000UL
#define LEO_OFF_LD_GBL		0x00401000UL
#define LEO_OFF_LX_KRN		0x00600000UL
#define LEO_OFF_LX_CURSOR	0x00601000UL
#define LEO_OFF_SS0		0x00800000UL
#define LEO_OFF_SS1		0x01800000UL
#define LEO_OFF_UNK		0x00602000UL
#define LEO_OFF_UNK2		0x00000000UL

#define LEO_CUR_ENABLE		0x00000080
#define LEO_CUR_UPDATE		0x00000030
#define LEO_CUR_PROGRESS	0x00000006
#define LEO_CUR_UPDATECMAP	0x00000003

#define LEO_CUR_TYPE_MASK	0x00000000
#define LEO_CUR_TYPE_IMAGE	0x00000020
#define LEO_CUR_TYPE_CMAP	0x00000050

struct leo_cursor {
	u8		xxx0[16];
	u32	cur_type;
	u32	cur_misc;
	u32	cur_cursxy;
	u32	cur_data;
};

#define LEO_KRN_TYPE_CLUT0	0x00001000
#define LEO_KRN_TYPE_CLUT1	0x00001001
#define LEO_KRN_TYPE_CLUT2	0x00001002
#define LEO_KRN_TYPE_WID	0x00001003
#define LEO_KRN_TYPE_UNK	0x00001006
#define LEO_KRN_TYPE_VIDEO	0x00002003
#define LEO_KRN_TYPE_CLUTDATA	0x00004000
#define LEO_KRN_CSR_ENABLE	0x00000008
#define LEO_KRN_CSR_PROGRESS	0x00000004
#define LEO_KRN_CSR_UNK		0x00000002
#define LEO_KRN_CSR_UNK2	0x00000001

struct leo_lx_krn {
	u32	krn_type;
	u32	krn_csr;
	u32	krn_value;
};

struct leo_lc_ss0_krn {
	u32 	misc;
	u8		xxx0[0x800-4];
	u32	rev;
};

struct leo_lc_ss0_usr {
	u32	csr;
	u32	addrspace;
	u32 	fontmsk;
	u32	fontt;
	u32	extent;
	u32	src;
	u32		dst;
	u32	copy;
	u32	fill;
};

struct leo_lc_ss1_krn {
	u8	unknown;
};

struct leo_lc_ss1_usr {
	u8	unknown;
};

struct leo_ld {
	u8		xxx0[0xe00];
	u32	csr;
	u32	wid;
	u32	wmask;
	u32	widclip;
	u32	vclipmin;
	u32	vclipmax;
	u32	pickmin;	/* SS1 only */
	u32	pickmax;	/* SS1 only */
	u32	fg;
	u32	bg;
	u32	src;		/* Copy/Scroll (SS0 only) */
	u32	dst;		/* Copy/Scroll/Fill (SS0 only) */
	u32	extent;		/* Copy/Scroll/Fill size (SS0 only) */
	u32		xxx1[3];
	u32	setsem;		/* SS1 only */
	u32	clrsem;		/* SS1 only */
	u32	clrpick;	/* SS1 only */
	u32	clrdat;		/* SS1 only */
	u32	alpha;		/* SS1 only */
	u8		xxx2[0x2c];
	u32	winbg;
	u32	planemask;
	u32	rop;
	u32	z;
	u32	dczf;		/* SS1 only */
	u32	dczb;		/* SS1 only */
	u32	dcs;		/* SS1 only */
	u32	dczs;		/* SS1 only */
	u32	pickfb;		/* SS1 only */
	u32	pickbb;		/* SS1 only */
	u32	dcfc;		/* SS1 only */
	u32	forcecol;	/* SS1 only */
	u32	door[8];	/* SS1 only */
	u32	pick[5];	/* SS1 only */
};

#define LEO_SS1_MISC_ENABLE	0x00000001
#define LEO_SS1_MISC_STEREO	0x00000002
struct leo_ld_ss1 {
	u8	xxx0[0xef4];
	u32	ss1_misc;
};

struct leo_ld_gbl {
	u8	unknown;
};

struct leo_par {
	spinlock_t		lock;
	struct leo_lx_krn	__iomem *lx_krn;
	struct leo_lc_ss0_usr	__iomem *lc_ss0_usr;
	struct leo_ld_ss0	__iomem *ld_ss0;
	struct leo_ld_ss1	__iomem *ld_ss1;
	struct leo_cursor	__iomem *cursor;
	u32			extent;
	u32			clut_data[256];

	u32			flags;
#define LEO_FLAG_BLANKED	0x00000001

	unsigned long		physbase;
	unsigned long		which_io;
	unsigned long		fbsize;
};

static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
{
	int i;
	
	for (i = 0;
	     (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
	     i++)
		udelay (1); /* Busy wait at most 0.3 sec */
	return;
}

/**
 *      leo_setcolreg - Optional function. Sets a color register.
 *      @regno: boolean, 0 copy local, 1 get_user() function
 *      @red: frame buffer colormap structure
 *      @green: The green value which can be up to 16 bits wide
 *      @blue:  The blue value which can be up to 16 bits wide.
 *      @transp: If supported the alpha value which can be up to 16 bits wide.
 *      @info: frame buffer info structure
 */
static int leo_setcolreg(unsigned regno,
			 unsigned red, unsigned green, unsigned blue,
			 unsigned transp, struct fb_info *info)
{
	struct leo_par *par = (struct leo_par *) info->par;
        struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
	unsigned long flags;
	u32 val;
	int i;

	if (regno >= 256)
		return 1;

	red >>= 8;
	green >>= 8;
	blue >>= 8;

	par->clut_data[regno] = red | (green << 8) | (blue << 16);

	spin_lock_irqsave(&par->lock, flags);

	leo_wait(lx_krn);

	sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
	for (i = 0; i < 256; i++)
		sbus_writel(par->clut_data[i], &lx_krn->krn_value);
	sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);

	val = sbus_readl(&lx_krn->krn_csr);
	val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
	sbus_writel(val, &lx_krn->krn_csr);

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

/**
 *      leo_blank - Optional function.  Blanks the display.
 *      @blank_mode: the blank mode we want.
 *      @info: frame buffer structure that represents a single frame buffer
 */
static int leo_blank(int blank, struct fb_info *info)
{
	struct leo_par *par = (struct leo_par *) info->par;
	struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
	unsigned long flags;
	u32 val;

	spin_lock_irqsave(&par->lock, flags);

	switch (blank) {
	case FB_BLANK_UNBLANK: /* Unblanking */
		val = sbus_readl(&lx_krn->krn_csr);
		val |= LEO_KRN_CSR_ENABLE;
		sbus_writel(val, &lx_krn->krn_csr);
		par->flags &= ~LEO_FLAG_BLANKED;
		break;

	case FB_BLANK_NORMAL: /* Normal blanking */
	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
	case FB_BLANK_POWERDOWN: /* Poweroff */
		val = sbus_readl(&lx_krn->krn_csr);
		val &= ~LEO_KRN_CSR_ENABLE;
		sbus_writel(val, &lx_krn->krn_csr);
		par->flags |= LEO_FLAG_BLANKED;
		break;
	}

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

static struct sbus_mmap_map leo_mmap_map[] = {
	{
		.voff	= LEO_SS0_MAP,
		.poff	= LEO_OFF_SS0,
		.size	= 0x800000
	},
	{
		.voff	= LEO_LC_SS0_USR_MAP,
		.poff	= LEO_OFF_LC_SS0_USR,
		.size	= 0x1000
	},
	{
		.voff	= LEO_LD_SS0_MAP,
		.poff	= LEO_OFF_LD_SS0,
		.size	= 0x1000
	},
	{
		.voff	= LEO_LX_CURSOR_MAP,
		.poff	= LEO_OFF_LX_CURSOR,
		.size	= 0x1000
	},
	{
		.voff	= LEO_SS1_MAP,
		.poff	= LEO_OFF_SS1,
		.size	= 0x800000
	},
	{
		.voff	= LEO_LC_SS1_USR_MAP,
		.poff	= LEO_OFF_LC_SS1_USR,
		.size	= 0x1000
	},
	{
		.voff	= LEO_LD_SS1_MAP,
		.poff	= LEO_OFF_LD_SS1,
		.size	= 0x1000
	},
	{
		.voff	= LEO_UNK_MAP,
		.poff	= LEO_OFF_UNK,
		.size	= 0x1000
	},
	{
		.voff	= LEO_LX_KRN_MAP,
		.poff	= LEO_OFF_LX_KRN,
		.size	= 0x1000
	},
	{
		.voff	= LEO_LC_SS0_KRN_MAP,
		.poff	= LEO_OFF_LC_SS0_KRN,
		.size	= 0x1000
	},
	{
		.voff	= LEO_LC_SS1_KRN_MAP,
		.poff	= LEO_OFF_LC_SS1_KRN,
		.size	= 0x1000
	},
	{
		.voff	= LEO_LD_GBL_MAP,
		.poff	= LEO_OFF_LD_GBL,
		.size	= 0x1000
	},
	{
		.voff	= LEO_UNK2_MAP,
		.poff	= LEO_OFF_UNK2,
		.size	= 0x100000
	},
	{ .size = 0 }
};

static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
	struct leo_par *par = (struct leo_par *)info->par;

	return sbusfb_mmap_helper(leo_mmap_map,
				  par->physbase, par->fbsize,
				  par->which_io, vma);
}

static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
{
	struct leo_par *par = (struct leo_par *) info->par;

	return sbusfb_ioctl_helper(cmd, arg, info,
				   FBTYPE_SUNLEO, 32, par->fbsize);
}

/*
 *  Initialisation
 */

static void
leo_init_fix(struct fb_info *info, struct device_node *dp)
{
	strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));

	info->fix.type = FB_TYPE_PACKED_PIXELS;
	info->fix.visual = FB_VISUAL_TRUECOLOR;

	info->fix.line_length = 8192;

	info->fix.accel = FB_ACCEL_SUN_LEO;
}

static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
{
	struct leo_par *par = (struct leo_par *) info->par;
	struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
	struct fb_wid_item *wi;
	unsigned long flags;
	u32 val;
	int i, j;

	spin_lock_irqsave(&par->lock, flags);

	leo_wait(lx_krn);

	for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
		switch(wi->wi_type) {
		case FB_WID_DBL_8:
			j = (wi->wi_index & 0xf) + 0x40;
			break;

		case FB_WID_DBL_24:
			j = wi->wi_index & 0x3f;
			break;

		default:
			continue;
		};
		sbus_writel(0x5800 + j, &lx_krn->krn_type);
		sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
	}
	sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);

	val = sbus_readl(&lx_krn->krn_csr);
	val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
	sbus_writel(val, &lx_krn->krn_csr);

	spin_unlock_irqrestore(&par->lock, flags);
}

static void leo_init_wids(struct fb_info *info)
{
	struct fb_wid_item wi;
	struct fb_wid_list wl;

	wl.wl_count = 1;
	wl.wl_list = &wi;
	wi.wi_type = FB_WID_DBL_8;
	wi.wi_index = 0;
	wi.wi_values [0] = 0x2c0;
	leo_wid_put(info, &wl);
	wi.wi_index = 1;
	wi.wi_values [0] = 0x30;
	leo_wid_put(info, &wl);
	wi.wi_index = 2;
	wi.wi_values [0] = 0x20;
	leo_wid_put(info, &wl);
	wi.wi_type = FB_WID_DBL_24;
	wi.wi_index = 1;
	wi.wi_values [0] = 0x30;
	leo_wid_put(info, &wl);

}

static void leo_switch_from_graph(struct fb_info *info)
{
	struct leo_par *par = (struct leo_par *) info->par;
	struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
	unsigned long flags;
	u32 val;

	spin_lock_irqsave(&par->lock, flags);

	par->extent = ((info->var.xres - 1) |
		       ((info->var.yres - 1) << 16));

	sbus_writel(0xffffffff, &ss->wid);
	sbus_writel(0xffff, &ss->wmask);
	sbus_writel(0, &ss->vclipmin);
	sbus_writel(par->extent, &ss->vclipmax);
	sbus_writel(0, &ss->fg);
	sbus_writel(0xff000000, &ss->planemask);
	sbus_writel(0x310850, &ss->rop);
	sbus_writel(0, &ss->widclip);
	sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
		    &par->lc_ss0_usr->extent);
	sbus_writel(4, &par->lc_ss0_usr->addrspace);
	sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
	sbus_writel(0, &par->lc_ss0_usr->fontt);
	do {
		val = sbus_readl(&par->lc_ss0_usr->csr);
	} while (val & 0x20000000);

	spin_unlock_irqrestore(&par->lock, flags);
}

static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
	/* We just use this to catch switches out of
	 * graphics mode.
	 */
	leo_switch_from_graph(info);

	if (var->xoffset || var->yoffset || var->vmode)
		return -EINVAL;
	return 0;
}

static void leo_init_hw(struct fb_info *info)
{
	struct leo_par *par = (struct leo_par *) info->par;
	u32 val;

	val = sbus_readl(&par->ld_ss1->ss1_misc);
	val |= LEO_SS1_MISC_ENABLE;
	sbus_writel(val, &par->ld_ss1->ss1_misc);

	leo_switch_from_graph(info);
}

static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
{
	var->red.offset = 0;
	var->red.length = 8;
	var->green.offset = 8;
	var->green.length = 8;
	var->blue.offset = 16;
	var->blue.length = 8;
	var->transp.offset = 0;
	var->transp.length = 0;
}

static void leo_unmap_regs(struct of_device *op, struct fb_info *info,
			   struct leo_par *par)
{
	if (par->lc_ss0_usr)
		of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
	if (par->ld_ss0)
		of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
	if (par->ld_ss1)
		of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
	if (par->lx_krn)
		of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
	if (par->cursor)
		of_iounmap(&op->resource[0],
			   par->cursor, sizeof(struct leo_cursor));
	if (info->screen_base)
		of_iounmap(&op->resource[0], info->screen_base, 0x800000);
}

static int __devinit leo_probe(struct of_device *op, const struct of_device_id *match)
{
	struct device_node *dp = op->node;
	struct fb_info *info;
	struct leo_par *par;
	int linebytes, err;

	info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);

	err = -ENOMEM;
	if (!info)
		goto out_err;
	par = info->par;

	spin_lock_init(&par->lock);

	par->physbase = op->resource[0].start;
	par->which_io = op->resource[0].flags & IORESOURCE_BITS;

	sbusfb_fill_var(&info->var, dp->node, 32);
	leo_fixup_var_rgb(&info->var);

	linebytes = of_getintprop_default(dp, "linebytes",
					  info->var.xres);
	par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);

	par->lc_ss0_usr =
		of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
			   0x1000, "leolc ss0usr");
	par->ld_ss0 =
		of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
			   0x1000, "leold ss0");
	par->ld_ss1 =
		of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
			   0x1000, "leold ss1");
	par->lx_krn =
		of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
			   0x1000, "leolx krn");
	par->cursor =
		of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
			   sizeof(struct leo_cursor), "leolx cursor");
	info->screen_base =
		of_ioremap(&op->resource[0], LEO_OFF_SS0,
			   0x800000, "leo ram");
	if (!par->lc_ss0_usr ||
	    !par->ld_ss0 ||
	    !par->ld_ss1 ||
	    !par->lx_krn ||
	    !par->cursor ||
	    !info->screen_base)
		goto out_unmap_regs;

	info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
	info->fbops = &leo_ops;

	leo_init_wids(info);
	leo_init_hw(info);

	leo_blank(0, info);

	if (fb_alloc_cmap(&info->cmap, 256, 0))
		goto out_unmap_regs;

	leo_init_fix(info, dp);

	err = register_framebuffer(info);
	if (err < 0)
		goto out_dealloc_cmap;

	dev_set_drvdata(&op->dev, info);

	printk("%s: leo at %lx:%lx\n",
	       dp->full_name,
	       par->which_io, par->physbase);

	return 0;

out_dealloc_cmap:
	fb_dealloc_cmap(&info->cmap);

out_unmap_regs:
	leo_unmap_regs(op, info, par);
	framebuffer_release(info);

out_err:
	return err;
}

static int __devexit leo_remove(struct of_device *op)
{
	struct fb_info *info = dev_get_drvdata(&op->dev);
	struct leo_par *par = info->par;

	unregister_framebuffer(info);
	fb_dealloc_cmap(&info->cmap);

	leo_unmap_regs(op, info, par);

	framebuffer_release(info);

	dev_set_drvdata(&op->dev, NULL);

	return 0;
}

static struct of_device_id leo_match[] = {
	{
		.name = "leo",
	},
	{},
};
MODULE_DEVICE_TABLE(of, leo_match);

static struct of_platform_driver leo_driver = {
	.name		= "leo",
	.match_table	= leo_match,
	.probe		= leo_probe,
	.remove		= __devexit_p(leo_remove),
};

static int __init leo_init(void)
{
	if (fb_get_options("leofb", NULL))
		return -ENODEV;

	return of_register_driver(&leo_driver, &of_bus_type);
}

static void __exit leo_exit(void)
{
	of_unregister_driver(&leo_driver);
}

module_init(leo_init);
module_exit(leo_exit);

MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/* leo.c: LEO frame buffer driver
1da177e4 LT	2	*
50312ce9	3	* Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
1da177e4 LT	4	* Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz)
	5	* Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz)
	6	*
	7	* Driver layout based loosely on tgafb.c, see that file for credits.
	8	*/
	9
	10	#include <linux/module.h>
	11	#include <linux/kernel.h>
	12	#include <linux/errno.h>
	13	#include <linux/string.h>
	14	#include <linux/slab.h>
	15	#include <linux/delay.h>
	16	#include <linux/init.h>
	17	#include <linux/fb.h>
	18	#include <linux/mm.h>
	19
	20	#include <asm/io.h>
50312ce9 DM	21	#include <asm/prom.h>
50312ce9 DM	22	#include <asm/of_device.h>
1da177e4 LT	23	#include <asm/fbio.h>
	24
	25	#include "sbuslib.h"
	26
	27	/*
	28	* Local functions.
	29	*/
	30
	31	static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
	32	unsigned, struct fb_info *);
	33	static int leo_blank(int, struct fb_info *);
	34
216d526c	35	static int leo_mmap(struct fb_info , struct vm_area_struct );
67a6680d	36	static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
1da177e4 LT	37	static int leo_pan_display(struct fb_var_screeninfo , struct fb_info );
	38
	39	/*
	40	* Frame buffer operations
	41	*/
	42
	43	static struct fb_ops leo_ops = {
	44	.owner = THIS_MODULE,
	45	.fb_setcolreg = leo_setcolreg,
	46	.fb_blank = leo_blank,
	47	.fb_pan_display = leo_pan_display,
	48	.fb_fillrect = cfb_fillrect,
	49	.fb_copyarea = cfb_copyarea,
	50	.fb_imageblit = cfb_imageblit,
	51	.fb_mmap = leo_mmap,
	52	.fb_ioctl = leo_ioctl,
9ffb83bc CH	53	#ifdef CONFIG_COMPAT
	54	.fb_compat_ioctl = sbusfb_compat_ioctl,
	55	#endif
1da177e4 LT	56	};
	57
	58	#define LEO_OFF_LC_SS0_KRN 0x00200000UL
	59	#define LEO_OFF_LC_SS0_USR 0x00201000UL
	60	#define LEO_OFF_LC_SS1_KRN 0x01200000UL
	61	#define LEO_OFF_LC_SS1_USR 0x01201000UL
	62	#define LEO_OFF_LD_SS0 0x00400000UL
	63	#define LEO_OFF_LD_SS1 0x01400000UL
	64	#define LEO_OFF_LD_GBL 0x00401000UL
	65	#define LEO_OFF_LX_KRN 0x00600000UL
	66	#define LEO_OFF_LX_CURSOR 0x00601000UL
	67	#define LEO_OFF_SS0 0x00800000UL
	68	#define LEO_OFF_SS1 0x01800000UL
	69	#define LEO_OFF_UNK 0x00602000UL
	70	#define LEO_OFF_UNK2 0x00000000UL
	71
	72	#define LEO_CUR_ENABLE 0x00000080
	73	#define LEO_CUR_UPDATE 0x00000030
	74	#define LEO_CUR_PROGRESS 0x00000006
	75	#define LEO_CUR_UPDATECMAP 0x00000003
	76
	77	#define LEO_CUR_TYPE_MASK 0x00000000
	78	#define LEO_CUR_TYPE_IMAGE 0x00000020
	79	#define LEO_CUR_TYPE_CMAP 0x00000050
	80
	81	struct leo_cursor {
	82	u8 xxx0[16];
50312ce9 DM	83	u32 cur_type;
	84	u32 cur_misc;
	85	u32 cur_cursxy;
	86	u32 cur_data;
1da177e4 LT	87	};
	88
	89	#define LEO_KRN_TYPE_CLUT0 0x00001000
	90	#define LEO_KRN_TYPE_CLUT1 0x00001001
	91	#define LEO_KRN_TYPE_CLUT2 0x00001002
	92	#define LEO_KRN_TYPE_WID 0x00001003
	93	#define LEO_KRN_TYPE_UNK 0x00001006
	94	#define LEO_KRN_TYPE_VIDEO 0x00002003
	95	#define LEO_KRN_TYPE_CLUTDATA 0x00004000
	96	#define LEO_KRN_CSR_ENABLE 0x00000008
	97	#define LEO_KRN_CSR_PROGRESS 0x00000004
	98	#define LEO_KRN_CSR_UNK 0x00000002
	99	#define LEO_KRN_CSR_UNK2 0x00000001
	100
	101	struct leo_lx_krn {
50312ce9 DM	102	u32 krn_type;
	103	u32 krn_csr;
	104	u32 krn_value;
1da177e4 LT	105	};
	106
	107	struct leo_lc_ss0_krn {
50312ce9	108	u32 misc;
1da177e4	109	u8 xxx0[0x800-4];
50312ce9	110	u32 rev;
1da177e4 LT	111	};
	112
	113	struct leo_lc_ss0_usr {
50312ce9 DM	114	u32 csr;
	115	u32 addrspace;
	116	u32 fontmsk;
	117	u32 fontt;
	118	u32 extent;
	119	u32 src;
1da177e4	120	u32 dst;
50312ce9 DM	121	u32 copy;
50312ce9 DM	122	u32 fill;
1da177e4 LT	123	};
	124
	125	struct leo_lc_ss1_krn {
	126	u8 unknown;
	127	};
	128
	129	struct leo_lc_ss1_usr {
	130	u8 unknown;
	131	};
	132
	133	struct leo_ld {
	134	u8 xxx0[0xe00];
50312ce9 DM	135	u32 csr;
	136	u32 wid;
	137	u32 wmask;
	138	u32 widclip;
	139	u32 vclipmin;
	140	u32 vclipmax;
	141	u32 pickmin; /* SS1 only */
	142	u32 pickmax; /* SS1 only */
	143	u32 fg;
	144	u32 bg;
	145	u32 src; /* Copy/Scroll (SS0 only) */
	146	u32 dst; /* Copy/Scroll/Fill (SS0 only) */
	147	u32 extent; /* Copy/Scroll/Fill size (SS0 only) */
1da177e4	148	u32 xxx1[3];
50312ce9 DM	149	u32 setsem; /* SS1 only */
	150	u32 clrsem; /* SS1 only */
	151	u32 clrpick; /* SS1 only */
	152	u32 clrdat; /* SS1 only */
	153	u32 alpha; /* SS1 only */
1da177e4	154	u8 xxx2[0x2c];
50312ce9 DM	155	u32 winbg;
	156	u32 planemask;
	157	u32 rop;
	158	u32 z;
	159	u32 dczf; /* SS1 only */
	160	u32 dczb; /* SS1 only */
	161	u32 dcs; /* SS1 only */
	162	u32 dczs; /* SS1 only */
	163	u32 pickfb; /* SS1 only */
	164	u32 pickbb; /* SS1 only */
	165	u32 dcfc; /* SS1 only */
	166	u32 forcecol; /* SS1 only */
	167	u32 door[8]; /* SS1 only */
	168	u32 pick[5]; /* SS1 only */
1da177e4 LT	169	};
	170
	171	#define LEO_SS1_MISC_ENABLE 0x00000001
	172	#define LEO_SS1_MISC_STEREO 0x00000002
	173	struct leo_ld_ss1 {
50312ce9 DM	174	u8 xxx0[0xef4];
50312ce9 DM	175	u32 ss1_misc;
1da177e4 LT	176	};
	177
	178	struct leo_ld_gbl {
	179	u8 unknown;
	180	};
	181
	182	struct leo_par {
	183	spinlock_t lock;
	184	struct leo_lx_krn __iomem *lx_krn;
	185	struct leo_lc_ss0_usr __iomem *lc_ss0_usr;
	186	struct leo_ld_ss0 __iomem *ld_ss0;
	187	struct leo_ld_ss1 __iomem *ld_ss1;
	188	struct leo_cursor __iomem *cursor;
	189	u32 extent;
	190	u32 clut_data[256];
	191
	192	u32 flags;
	193	#define LEO_FLAG_BLANKED 0x00000001
	194
	195	unsigned long physbase;
50312ce9	196	unsigned long which_io;
1da177e4	197	unsigned long fbsize;
1da177e4 LT	198	};
	199
	200	static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
	201	{
	202	int i;
	203
	204	for (i = 0;
	205	(sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
	206	i++)
	207	udelay (1); /* Busy wait at most 0.3 sec */
	208	return;
	209	}
	210
	211	/**
	212	* leo_setcolreg - Optional function. Sets a color register.
	213	* @regno: boolean, 0 copy local, 1 get_user() function
	214	* @red: frame buffer colormap structure
	215	* @green: The green value which can be up to 16 bits wide
	216	* @blue: The blue value which can be up to 16 bits wide.
	217	* @transp: If supported the alpha value which can be up to 16 bits wide.
	218	* @info: frame buffer info structure
	219	*/
	220	static int leo_setcolreg(unsigned regno,
	221	unsigned red, unsigned green, unsigned blue,
	222	unsigned transp, struct fb_info *info)
	223	{
	224	struct leo_par par = (struct leo_par ) info->par;
	225	struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
	226	unsigned long flags;
	227	u32 val;
	228	int i;
	229
	230	if (regno >= 256)
	231	return 1;
	232
	233	red >>= 8;
	234	green >>= 8;
	235	blue >>= 8;
	236
	237	par->clut_data[regno] = red \| (green << 8) \| (blue << 16);
	238
	239	spin_lock_irqsave(&par->lock, flags);
	240
	241	leo_wait(lx_krn);
	242
	243	sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
	244	for (i = 0; i < 256; i++)
	245	sbus_writel(par->clut_data[i], &lx_krn->krn_value);
	246	sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
	247
	248	val = sbus_readl(&lx_krn->krn_csr);
	249	val \|= (LEO_KRN_CSR_UNK \| LEO_KRN_CSR_UNK2);
	250	sbus_writel(val, &lx_krn->krn_csr);
	251
	252	spin_unlock_irqrestore(&par->lock, flags);
	253
	254	return 0;
	255	}
	256
	257	/**
	258	* leo_blank - Optional function. Blanks the display.
	259	* @blank_mode: the blank mode we want.
	260	* @info: frame buffer structure that represents a single frame buffer
	261	*/
262	static int leo_blank(int blank, struct fb_info *info)
263	{
264	struct leo_par par = (struct leo_par ) info->par;
265	struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
266	unsigned long flags;
267	u32 val;
268
269	spin_lock_irqsave(&par->lock, flags);
270
271	switch (blank) {
272	case FB_BLANK_UNBLANK: /* Unblanking */
273	val = sbus_readl(&lx_krn->krn_csr);
274	val \|= LEO_KRN_CSR_ENABLE;
275	sbus_writel(val, &lx_krn->krn_csr);
276	par->flags &= ~LEO_FLAG_BLANKED;
277	break;
278
279	case FB_BLANK_NORMAL: /* Normal blanking */
280	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
281	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
282	case FB_BLANK_POWERDOWN: /* Poweroff */
283	val = sbus_readl(&lx_krn->krn_csr);
284	val &= ~LEO_KRN_CSR_ENABLE;
285	sbus_writel(val, &lx_krn->krn_csr);
286	par->flags \|= LEO_FLAG_BLANKED;
287	break;
288	}
289
290	spin_unlock_irqrestore(&par->lock, flags);
291
292	return 0;
293	}
294
295	static struct sbus_mmap_map leo_mmap_map[] = {
296	{
297	.voff = LEO_SS0_MAP,
298	.poff = LEO_OFF_SS0,
299	.size = 0x800000
300	},
301	{
302	.voff = LEO_LC_SS0_USR_MAP,
303	.poff = LEO_OFF_LC_SS0_USR,
304	.size = 0x1000
305	},
306	{
307	.voff = LEO_LD_SS0_MAP,
308	.poff = LEO_OFF_LD_SS0,
309	.size = 0x1000
310	},
311	{
312	.voff = LEO_LX_CURSOR_MAP,
313	.poff = LEO_OFF_LX_CURSOR,
314	.size = 0x1000
315	},
316	{
317	.voff = LEO_SS1_MAP,
318	.poff = LEO_OFF_SS1,
319	.size = 0x800000
320	},
321	{
322	.voff = LEO_LC_SS1_USR_MAP,
323	.poff = LEO_OFF_LC_SS1_USR,
324	.size = 0x1000
325	},
326	{
327	.voff = LEO_LD_SS1_MAP,
328	.poff = LEO_OFF_LD_SS1,
329	.size = 0x1000
330	},
331	{
332	.voff = LEO_UNK_MAP,
333	.poff = LEO_OFF_UNK,
334	.size = 0x1000
335	},
336	{
337	.voff = LEO_LX_KRN_MAP,
338	.poff = LEO_OFF_LX_KRN,
339	.size = 0x1000
340	},
341	{
342	.voff = LEO_LC_SS0_KRN_MAP,
343	.poff = LEO_OFF_LC_SS0_KRN,
344	.size = 0x1000
345	},
346	{
347	.voff = LEO_LC_SS1_KRN_MAP,
348	.poff = LEO_OFF_LC_SS1_KRN,
349	.size = 0x1000
350	},
351	{
352	.voff = LEO_LD_GBL_MAP,
353	.poff = LEO_OFF_LD_GBL,
354	.size = 0x1000
355	},
356	{
357	.voff = LEO_UNK2_MAP,
358	.poff = LEO_OFF_UNK2,
359	.size = 0x100000
360	},
361	{ .size = 0 }
362	};
363
216d526c	364	static int leo_mmap(struct fb_info info, struct vm_area_struct vma)
1da177e4 LT	365	{
	366	struct leo_par par = (struct leo_par )info->par;
	367
	368	return sbusfb_mmap_helper(leo_mmap_map,
	369	par->physbase, par->fbsize,
50312ce9	370	par->which_io, vma);
1da177e4 LT	371	}
1da177e4 LT	372
67a6680d	373	static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1da177e4 LT	374	{
	375	struct leo_par par = (struct leo_par ) info->par;
	376
	377	return sbusfb_ioctl_helper(cmd, arg, info,
	378	FBTYPE_SUNLEO, 32, par->fbsize);
	379	}
	380
	381	/*
	382	* Initialisation
	383	*/
	384
	385	static void
50312ce9	386	leo_init_fix(struct fb_info info, struct device_node dp)
1da177e4	387	{
50312ce9	388	strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
1da177e4 LT	389
	390	info->fix.type = FB_TYPE_PACKED_PIXELS;
	391	info->fix.visual = FB_VISUAL_TRUECOLOR;
	392
	393	info->fix.line_length = 8192;
	394
	395	info->fix.accel = FB_ACCEL_SUN_LEO;
	396	}
	397
	398	static void leo_wid_put(struct fb_info info, struct fb_wid_list wl)
	399	{
	400	struct leo_par par = (struct leo_par ) info->par;
	401	struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
	402	struct fb_wid_item *wi;
	403	unsigned long flags;
	404	u32 val;
	405	int i, j;
	406
	407	spin_lock_irqsave(&par->lock, flags);
	408
	409	leo_wait(lx_krn);
	410
	411	for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
	412	switch(wi->wi_type) {
	413	case FB_WID_DBL_8:
	414	j = (wi->wi_index & 0xf) + 0x40;
	415	break;
	416
	417	case FB_WID_DBL_24:
	418	j = wi->wi_index & 0x3f;
	419	break;
	420
	421	default:
	422	continue;
	423	};
	424	sbus_writel(0x5800 + j, &lx_krn->krn_type);
	425	sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
	426	}
	427	sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
	428
	429	val = sbus_readl(&lx_krn->krn_csr);
	430	val \|= (LEO_KRN_CSR_UNK \| LEO_KRN_CSR_UNK2);
	431	sbus_writel(val, &lx_krn->krn_csr);
	432
	433	spin_unlock_irqrestore(&par->lock, flags);
	434	}
	435
	436	static void leo_init_wids(struct fb_info *info)
	437	{
	438	struct fb_wid_item wi;
	439	struct fb_wid_list wl;
	440
	441	wl.wl_count = 1;
	442	wl.wl_list = &wi;
	443	wi.wi_type = FB_WID_DBL_8;
	444	wi.wi_index = 0;
	445	wi.wi_values [0] = 0x2c0;
	446	leo_wid_put(info, &wl);
	447	wi.wi_index = 1;
	448	wi.wi_values [0] = 0x30;
	449	leo_wid_put(info, &wl);
	450	wi.wi_index = 2;
	451	wi.wi_values [0] = 0x20;
	452	leo_wid_put(info, &wl);
453	wi.wi_type = FB_WID_DBL_24;
454	wi.wi_index = 1;
455	wi.wi_values [0] = 0x30;
456	leo_wid_put(info, &wl);
457
458	}
459
460	static void leo_switch_from_graph(struct fb_info *info)
461	{
462	struct leo_par par = (struct leo_par ) info->par;
463	struct leo_ld __iomem ss = (struct leo_ld __iomem ) par->ld_ss0;
464	unsigned long flags;
465	u32 val;
466
467	spin_lock_irqsave(&par->lock, flags);
468
469	par->extent = ((info->var.xres - 1) \|
470	((info->var.yres - 1) << 16));
471
472	sbus_writel(0xffffffff, &ss->wid);
473	sbus_writel(0xffff, &ss->wmask);
474	sbus_writel(0, &ss->vclipmin);
475	sbus_writel(par->extent, &ss->vclipmax);
476	sbus_writel(0, &ss->fg);
477	sbus_writel(0xff000000, &ss->planemask);
478	sbus_writel(0x310850, &ss->rop);
479	sbus_writel(0, &ss->widclip);
480	sbus_writel((info->var.xres-1) \| ((info->var.yres-1) << 11),
481	&par->lc_ss0_usr->extent);
482	sbus_writel(4, &par->lc_ss0_usr->addrspace);
483	sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
484	sbus_writel(0, &par->lc_ss0_usr->fontt);
485	do {
486	val = sbus_readl(&par->lc_ss0_usr->csr);
487	} while (val & 0x20000000);
488
489	spin_unlock_irqrestore(&par->lock, flags);
490	}
491
492	static int leo_pan_display(struct fb_var_screeninfo var, struct fb_info info)
493	{
494	/* We just use this to catch switches out of
495	* graphics mode.
496	*/
497	leo_switch_from_graph(info);
498
499	if (var->xoffset \|\| var->yoffset \|\| var->vmode)
500	return -EINVAL;
501	return 0;
502	}
503
504	static void leo_init_hw(struct fb_info *info)
505	{
506	struct leo_par par = (struct leo_par ) info->par;
507	u32 val;
508
509	val = sbus_readl(&par->ld_ss1->ss1_misc);
510	val \|= LEO_SS1_MISC_ENABLE;
511	sbus_writel(val, &par->ld_ss1->ss1_misc);
512
513	leo_switch_from_graph(info);
514	}
515
516	static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
517	{
518	var->red.offset = 0;
519	var->red.length = 8;
520	var->green.offset = 8;
521	var->green.length = 8;
522	var->blue.offset = 16;
523	var->blue.length = 8;
524	var->transp.offset = 0;
525	var->transp.length = 0;
526	}
527
c7f439b9 DM	528	static void leo_unmap_regs(struct of_device op, struct fb_info info,
c7f439b9 DM	529	struct leo_par *par)
1da177e4	530	{
c7f439b9 DM	531	if (par->lc_ss0_usr)
	532	of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
	533	if (par->ld_ss0)
	534	of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
	535	if (par->ld_ss1)
	536	of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
	537	if (par->lx_krn)
	538	of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
	539	if (par->cursor)
e3a411a3	540	of_iounmap(&op->resource[0],
c7f439b9 DM	541	par->cursor, sizeof(struct leo_cursor));
	542	if (info->screen_base)
	543	of_iounmap(&op->resource[0], info->screen_base, 0x800000);
50312ce9	544	}
1da177e4	545
c7f439b9	546	static int __devinit leo_probe(struct of_device op, const struct of_device_id match)
50312ce9 DM	547	{
50312ce9 DM	548	struct device_node *dp = op->node;
c7f439b9 DM	549	struct fb_info *info;
c7f439b9 DM	550	struct leo_par *par;
50312ce9	551	int linebytes, err;
1da177e4	552
c7f439b9 DM	553	info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
	554
	555	err = -ENOMEM;
	556	if (!info)
	557	goto out_err;
	558	par = info->par;
1da177e4	559
c7f439b9	560	spin_lock_init(&par->lock);
1da177e4	561
c7f439b9 DM	562	par->physbase = op->resource[0].start;
c7f439b9 DM	563	par->which_io = op->resource[0].flags & IORESOURCE_BITS;
1da177e4	564
c7f439b9 DM	565	sbusfb_fill_var(&info->var, dp->node, 32);
c7f439b9 DM	566	leo_fixup_var_rgb(&info->var);
1da177e4	567
50312ce9	568	linebytes = of_getintprop_default(dp, "linebytes",
c7f439b9 DM	569	info->var.xres);
c7f439b9 DM	570	par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);
1da177e4	571
c7f439b9	572	par->lc_ss0_usr =
50312ce9 DM	573	of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
50312ce9 DM	574	0x1000, "leolc ss0usr");
c7f439b9	575	par->ld_ss0 =
50312ce9 DM	576	of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
50312ce9 DM	577	0x1000, "leold ss0");
c7f439b9	578	par->ld_ss1 =
50312ce9 DM	579	of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
50312ce9 DM	580	0x1000, "leold ss1");
c7f439b9	581	par->lx_krn =
50312ce9 DM	582	of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
50312ce9 DM	583	0x1000, "leolx krn");
c7f439b9	584	par->cursor =
50312ce9 DM	585	of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
50312ce9 DM	586	sizeof(struct leo_cursor), "leolx cursor");
c7f439b9	587	info->screen_base =
50312ce9 DM	588	of_ioremap(&op->resource[0], LEO_OFF_SS0,
50312ce9 DM	589	0x800000, "leo ram");
c7f439b9 DM	590	if (!par->lc_ss0_usr \|\|
	591	!par->ld_ss0 \|\|
	592	!par->ld_ss1 \|\|
	593	!par->lx_krn \|\|
	594	!par->cursor \|\|
	595	!info->screen_base)
	596	goto out_unmap_regs;
1da177e4	597
c7f439b9 DM	598	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_YPAN;
c7f439b9 DM	599	info->fbops = &leo_ops;
1da177e4	600
c7f439b9 DM	601	leo_init_wids(info);
c7f439b9 DM	602	leo_init_hw(info);
1da177e4	603
c7f439b9	604	leo_blank(0, info);
1da177e4	605
c7f439b9 DM	606	if (fb_alloc_cmap(&info->cmap, 256, 0))
c7f439b9 DM	607	goto out_unmap_regs;
1da177e4	608
c7f439b9	609	leo_init_fix(info, dp);
1da177e4	610
c7f439b9 DM	611	err = register_framebuffer(info);
	612	if (err < 0)
	613	goto out_dealloc_cmap;
1da177e4	614
c7f439b9	615	dev_set_drvdata(&op->dev, info);
50312ce9 DM	616
	617	printk("%s: leo at %lx:%lx\n",
	618	dp->full_name,
c7f439b9	619	par->which_io, par->physbase);
1da177e4	620
50312ce9	621	return 0;
1da177e4	622
c7f439b9 DM	623	out_dealloc_cmap:
	624	fb_dealloc_cmap(&info->cmap);
	625
	626	out_unmap_regs:
	627	leo_unmap_regs(op, info, par);
	628	framebuffer_release(info);
1da177e4	629
c7f439b9 DM	630	out_err:
c7f439b9 DM	631	return err;
50312ce9	632	}
1da177e4	633
e3a411a3	634	static int __devexit leo_remove(struct of_device *op)
50312ce9	635	{
c7f439b9 DM	636	struct fb_info *info = dev_get_drvdata(&op->dev);
c7f439b9 DM	637	struct leo_par *par = info->par;
50312ce9	638
c7f439b9 DM	639	unregister_framebuffer(info);
c7f439b9 DM	640	fb_dealloc_cmap(&info->cmap);
50312ce9	641
c7f439b9	642	leo_unmap_regs(op, info, par);
50312ce9	643
c7f439b9	644	framebuffer_release(info);
50312ce9	645
e3a411a3	646	dev_set_drvdata(&op->dev, NULL);
1da177e4 LT	647
	648	return 0;
	649	}
	650
50312ce9 DM	651	static struct of_device_id leo_match[] = {
	652	{
	653	.name = "leo",
	654	},
	655	{},
	656	};
	657	MODULE_DEVICE_TABLE(of, leo_match);
	658
	659	static struct of_platform_driver leo_driver = {
	660	.name = "leo",
	661	.match_table = leo_match,
	662	.probe = leo_probe,
	663	.remove = __devexit_p(leo_remove),
	664	};
1da177e4	665
50312ce9 DM	666	static int __init leo_init(void)
	667	{
	668	if (fb_get_options("leofb", NULL))
	669	return -ENODEV;
1da177e4	670
50312ce9	671	return of_register_driver(&leo_driver, &of_bus_type);
1da177e4 LT	672	}
1da177e4 LT	673
50312ce9	674	static void __exit leo_exit(void)
1da177e4	675	{
50312ce9	676	of_unregister_driver(&leo_driver);
1da177e4 LT	677	}
	678
	679	module_init(leo_init);
1da177e4	680	module_exit(leo_exit);
1da177e4 LT	681
1da177e4 LT	682	MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
50312ce9 DM	683	MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
50312ce9 DM	684	MODULE_VERSION("2.0");
1da177e4	685	MODULE_LICENSE("GPL");