[mirror_ubuntu-artful-kernel.git] / drivers / video / tcx.c

/* tcx.c: TCX 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) 1996 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/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 tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
			 unsigned, struct fb_info *);
static int tcx_blank(int, struct fb_info *);

static int tcx_mmap(struct fb_info *, struct vm_area_struct *);
static int tcx_ioctl(struct fb_info *, unsigned int, unsigned long);
static int tcx_pan_display(struct fb_var_screeninfo *, struct fb_info *);

/*
 *  Frame buffer operations
 */

static struct fb_ops tcx_ops = {
	.owner			= THIS_MODULE,
	.fb_setcolreg		= tcx_setcolreg,
	.fb_blank		= tcx_blank,
	.fb_pan_display		= tcx_pan_display,
	.fb_fillrect		= cfb_fillrect,
	.fb_copyarea		= cfb_copyarea,
	.fb_imageblit		= cfb_imageblit,
	.fb_mmap		= tcx_mmap,
	.fb_ioctl		= tcx_ioctl,
#ifdef CONFIG_COMPAT
	.fb_compat_ioctl	= sbusfb_compat_ioctl,
#endif
};

/* THC definitions */
#define TCX_THC_MISC_REV_SHIFT       16
#define TCX_THC_MISC_REV_MASK        15
#define TCX_THC_MISC_VSYNC_DIS       (1 << 25)
#define TCX_THC_MISC_HSYNC_DIS       (1 << 24)
#define TCX_THC_MISC_RESET           (1 << 12)
#define TCX_THC_MISC_VIDEO           (1 << 10)
#define TCX_THC_MISC_SYNC            (1 << 9)
#define TCX_THC_MISC_VSYNC           (1 << 8)
#define TCX_THC_MISC_SYNC_ENAB       (1 << 7)
#define TCX_THC_MISC_CURS_RES        (1 << 6)
#define TCX_THC_MISC_INT_ENAB        (1 << 5)
#define TCX_THC_MISC_INT             (1 << 4)
#define TCX_THC_MISC_INIT            0x9f
#define TCX_THC_REV_REV_SHIFT        20
#define TCX_THC_REV_REV_MASK         15
#define TCX_THC_REV_MINREV_SHIFT     28
#define TCX_THC_REV_MINREV_MASK      15

/* The contents are unknown */
struct tcx_tec {
	u32 tec_matrix;
	u32 tec_clip;
	u32 tec_vdc;
};

struct tcx_thc {
	u32 thc_rev;
        u32 thc_pad0[511];
	u32 thc_hs;		/* hsync timing */
	u32 thc_hsdvs;
	u32 thc_hd;
	u32 thc_vs;		/* vsync timing */
	u32 thc_vd;
	u32 thc_refresh;
	u32 thc_misc;
	u32 thc_pad1[56];
	u32 thc_cursxy;	/* cursor x,y position (16 bits each) */
	u32 thc_cursmask[32];	/* cursor mask bits */
	u32 thc_cursbits[32];	/* what to show where mask enabled */
};

struct bt_regs {
	u32 addr;
	u32 color_map;
	u32 control;
	u32 cursor;
};

#define TCX_MMAP_ENTRIES 14

struct tcx_par {
	spinlock_t		lock;
	struct bt_regs		__iomem *bt;
	struct tcx_thc		__iomem *thc;
	struct tcx_tec		__iomem *tec;
	u32			__iomem *cplane;

	u32			flags;
#define TCX_FLAG_BLANKED	0x00000001

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

	struct sbus_mmap_map	mmap_map[TCX_MMAP_ENTRIES];
	int			lowdepth;
};

/* Reset control plane so that WID is 8-bit plane. */
static void __tcx_set_control_plane (struct tcx_par *par)
{
	u32 __iomem *p, *pend;
        
	if (par->lowdepth)
		return;

	p = par->cplane;
	if (p == NULL)
		return;
	for (pend = p + par->fbsize; p < pend; p++) {
		u32 tmp = sbus_readl(p);

		tmp &= 0xffffff;
		sbus_writel(tmp, p);
	}
}
                                                
static void tcx_reset (struct fb_info *info)
{
	struct tcx_par *par = (struct tcx_par *) info->par;
	unsigned long flags;

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

static int tcx_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
	tcx_reset(info);
	return 0;
}

/**
 *      tcx_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 tcx_setcolreg(unsigned regno,
			 unsigned red, unsigned green, unsigned blue,
			 unsigned transp, struct fb_info *info)
{
	struct tcx_par *par = (struct tcx_par *) info->par;
	struct bt_regs __iomem *bt = par->bt;
	unsigned long flags;

	if (regno >= 256)
		return 1;

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

	spin_lock_irqsave(&par->lock, flags);

	sbus_writel(regno << 24, &bt->addr);
	sbus_writel(red << 24, &bt->color_map);
	sbus_writel(green << 24, &bt->color_map);
	sbus_writel(blue << 24, &bt->color_map);

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

/**
 *      tcx_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
tcx_blank(int blank, struct fb_info *info)
{
	struct tcx_par *par = (struct tcx_par *) info->par;
	struct tcx_thc __iomem *thc = par->thc;
	unsigned long flags;
	u32 val;

	spin_lock_irqsave(&par->lock, flags);

	val = sbus_readl(&thc->thc_misc);

	switch (blank) {
	case FB_BLANK_UNBLANK: /* Unblanking */
		val &= ~(TCX_THC_MISC_VSYNC_DIS |
			 TCX_THC_MISC_HSYNC_DIS);
		val |= TCX_THC_MISC_VIDEO;
		par->flags &= ~TCX_FLAG_BLANKED;
		break;

	case FB_BLANK_NORMAL: /* Normal blanking */
		val &= ~TCX_THC_MISC_VIDEO;
		par->flags |= TCX_FLAG_BLANKED;
		break;

	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
		val |= TCX_THC_MISC_VSYNC_DIS;
		break;
	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
		val |= TCX_THC_MISC_HSYNC_DIS;
		break;

	case FB_BLANK_POWERDOWN: /* Poweroff */
		break;
	};

	sbus_writel(val, &thc->thc_misc);

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
	{
		.voff	= TCX_RAM8BIT,
		.size	= SBUS_MMAP_FBSIZE(1)
	},
	{
		.voff	= TCX_RAM24BIT,
		.size	= SBUS_MMAP_FBSIZE(4)
	},
	{
		.voff	= TCX_UNK3,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_UNK4,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_CONTROLPLANE,
		.size	= SBUS_MMAP_FBSIZE(4)
	},
	{
		.voff	= TCX_UNK6,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_UNK7,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_TEC,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_BTREGS,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_THC,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_DHC,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_ALT,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_UNK2,
		.size	= 0x20000
	},
	{ .size = 0 }
};

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

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

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

	return sbusfb_ioctl_helper(cmd, arg, info,
				   FBTYPE_TCXCOLOR,
				   (par->lowdepth ? 8 : 24),
				   par->fbsize);
}

/*
 *  Initialisation
 */

static void
tcx_init_fix(struct fb_info *info, int linebytes)
{
	struct tcx_par *par = (struct tcx_par *)info->par;
	const char *tcx_name;

	if (par->lowdepth)
		tcx_name = "TCX8";
	else
		tcx_name = "TCX24";

	strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));

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

	info->fix.line_length = linebytes;

	info->fix.accel = FB_ACCEL_SUN_TCX;
}

struct all_info {
	struct fb_info info;
	struct tcx_par par;
};

static void tcx_unmap_regs(struct of_device *op, struct all_info *all)
{
	if (all->par.tec)
		of_iounmap(&op->resource[7],
			   all->par.tec, sizeof(struct tcx_tec));
	if (all->par.thc)
		of_iounmap(&op->resource[9],
			   all->par.thc, sizeof(struct tcx_thc));
	if (all->par.bt)
		of_iounmap(&op->resource[8],
			   all->par.bt, sizeof(struct bt_regs));
	if (all->par.cplane)
		of_iounmap(&op->resource[4],
			   all->par.cplane, all->par.fbsize * sizeof(u32));
	if (all->info.screen_base)
		of_iounmap(&op->resource[0],
			   all->info.screen_base, all->par.fbsize);
}

static int __devinit tcx_init_one(struct of_device *op)
{
	struct device_node *dp = op->node;
	struct all_info *all;
	int linebytes, i, err;

	all = kzalloc(sizeof(*all), GFP_KERNEL);
	if (!all)
		return -ENOMEM;

	spin_lock_init(&all->par.lock);

	all->par.lowdepth =
		(of_find_property(dp, "tcx-8-bit", NULL) != NULL);

	sbusfb_fill_var(&all->info.var, dp->node, 8);
	all->info.var.red.length = 8;
	all->info.var.green.length = 8;
	all->info.var.blue.length = 8;

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

	all->par.tec = of_ioremap(&op->resource[7], 0,
				  sizeof(struct tcx_tec), "tcx tec");
	all->par.thc = of_ioremap(&op->resource[9], 0,
				  sizeof(struct tcx_thc), "tcx thc");
	all->par.bt = of_ioremap(&op->resource[8], 0,
				 sizeof(struct bt_regs), "tcx dac");
	all->info.screen_base = of_ioremap(&op->resource[0], 0,
					   all->par.fbsize, "tcx ram");
	if (!all->par.tec || !all->par.thc ||
	    !all->par.bt || !all->info.screen_base) {
		tcx_unmap_regs(op, all);
		kfree(all);
		return -ENOMEM;
	}

	memcpy(&all->par.mmap_map, &__tcx_mmap_map, sizeof(all->par.mmap_map));
	if (!all->par.lowdepth) {
		all->par.cplane = of_ioremap(&op->resource[4], 0,
					     all->par.fbsize * sizeof(u32),
					     "tcx cplane");
		if (!all->par.cplane) {
			tcx_unmap_regs(op, all);
			kfree(all);
			return -ENOMEM;
		}
	} else {
		all->par.mmap_map[1].size = SBUS_MMAP_EMPTY;
		all->par.mmap_map[4].size = SBUS_MMAP_EMPTY;
		all->par.mmap_map[5].size = SBUS_MMAP_EMPTY;
		all->par.mmap_map[6].size = SBUS_MMAP_EMPTY;
	}

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

	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
		int j;

		switch (i) {
		case 10:
			j = 12;
			break;

		case 11: case 12:
			j = i - 1;
			break;

		default:
			j = i;
			break;
		};
		all->par.mmap_map[i].poff = op->resource[j].start;
	}

	all->info.flags = FBINFO_DEFAULT;
	all->info.fbops = &tcx_ops;
	all->info.par = &all->par;

	/* Initialize brooktree DAC. */
	sbus_writel(0x04 << 24, &all->par.bt->addr);         /* color planes */
	sbus_writel(0xff << 24, &all->par.bt->control);
	sbus_writel(0x05 << 24, &all->par.bt->addr);
	sbus_writel(0x00 << 24, &all->par.bt->control);
	sbus_writel(0x06 << 24, &all->par.bt->addr);         /* overlay plane */
	sbus_writel(0x73 << 24, &all->par.bt->control);
	sbus_writel(0x07 << 24, &all->par.bt->addr);
	sbus_writel(0x00 << 24, &all->par.bt->control);

	tcx_reset(&all->info);

	tcx_blank(FB_BLANK_UNBLANK, &all->info);

	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
		tcx_unmap_regs(op, all);
		kfree(all);
		return -ENOMEM;
	}

	fb_set_cmap(&all->info.cmap, &all->info);
	tcx_init_fix(&all->info, linebytes);

	err = register_framebuffer(&all->info);
	if (err < 0) {
		fb_dealloc_cmap(&all->info.cmap);
		tcx_unmap_regs(op, all);
		kfree(all);
		return err;
	}

	dev_set_drvdata(&op->dev, all);

	printk("%s: TCX at %lx:%lx, %s\n",
	       dp->full_name,
	       all->par.which_io,
	       op->resource[0].start,
	       all->par.lowdepth ? "8-bit only" : "24-bit depth");

	return 0;
}

static int __devinit tcx_probe(struct of_device *dev, const struct of_device_id *match)
{
	struct of_device *op = to_of_device(&dev->dev);

	return tcx_init_one(op);
}

static int __devexit tcx_remove(struct of_device *op)
{
	struct all_info *all = dev_get_drvdata(&op->dev);

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

	tcx_unmap_regs(op, all);

	kfree(all);

	dev_set_drvdata(&op->dev, NULL);

	return 0;
}

static struct of_device_id tcx_match[] = {
	{
		.name = "SUNW,tcx",
	},
	{},
};
MODULE_DEVICE_TABLE(of, tcx_match);

static struct of_platform_driver tcx_driver = {
	.name		= "tcx",
	.match_table	= tcx_match,
	.probe		= tcx_probe,
	.remove		= __devexit_p(tcx_remove),
};

int __init tcx_init(void)
{
	if (fb_get_options("tcxfb", NULL))
		return -ENODEV;

	return of_register_driver(&tcx_driver, &of_bus_type);
}

void __exit tcx_exit(void)
{
	of_unregister_driver(&tcx_driver);
}

module_init(tcx_init);
module_exit(tcx_exit);

MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/* tcx.c: TCX frame buffer driver
1da177e4 LT	2	*
50312ce9	3	* Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
1da177e4 LT	4	* Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
	5	* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
	6	* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
	7	*
	8	* Driver layout based loosely on tgafb.c, see that file for credits.
	9	*/
	10
	11	#include <linux/module.h>
	12	#include <linux/kernel.h>
	13	#include <linux/errno.h>
	14	#include <linux/string.h>
	15	#include <linux/slab.h>
	16	#include <linux/delay.h>
	17	#include <linux/init.h>
	18	#include <linux/fb.h>
	19	#include <linux/mm.h>
	20
	21	#include <asm/io.h>
50312ce9 DM	22	#include <asm/prom.h>
50312ce9 DM	23	#include <asm/of_device.h>
1da177e4 LT	24	#include <asm/fbio.h>
	25
	26	#include "sbuslib.h"
	27
	28	/*
	29	* Local functions.
	30	*/
	31
	32	static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
	33	unsigned, struct fb_info *);
	34	static int tcx_blank(int, struct fb_info *);
	35
216d526c	36	static int tcx_mmap(struct fb_info , struct vm_area_struct );
67a6680d	37	static int tcx_ioctl(struct fb_info *, unsigned int, unsigned long);
6ee7c152	38	static int tcx_pan_display(struct fb_var_screeninfo , struct fb_info );
1da177e4 LT	39
	40	/*
	41	* Frame buffer operations
	42	*/
	43
	44	static struct fb_ops tcx_ops = {
	45	.owner = THIS_MODULE,
	46	.fb_setcolreg = tcx_setcolreg,
	47	.fb_blank = tcx_blank,
6ee7c152	48	.fb_pan_display = tcx_pan_display,
1da177e4 LT	49	.fb_fillrect = cfb_fillrect,
	50	.fb_copyarea = cfb_copyarea,
	51	.fb_imageblit = cfb_imageblit,
	52	.fb_mmap = tcx_mmap,
	53	.fb_ioctl = tcx_ioctl,
9ffb83bc CH	54	#ifdef CONFIG_COMPAT
	55	.fb_compat_ioctl = sbusfb_compat_ioctl,
	56	#endif
1da177e4 LT	57	};
	58
	59	/* THC definitions */
	60	#define TCX_THC_MISC_REV_SHIFT 16
	61	#define TCX_THC_MISC_REV_MASK 15
	62	#define TCX_THC_MISC_VSYNC_DIS (1 << 25)
	63	#define TCX_THC_MISC_HSYNC_DIS (1 << 24)
	64	#define TCX_THC_MISC_RESET (1 << 12)
	65	#define TCX_THC_MISC_VIDEO (1 << 10)
	66	#define TCX_THC_MISC_SYNC (1 << 9)
	67	#define TCX_THC_MISC_VSYNC (1 << 8)
	68	#define TCX_THC_MISC_SYNC_ENAB (1 << 7)
	69	#define TCX_THC_MISC_CURS_RES (1 << 6)
	70	#define TCX_THC_MISC_INT_ENAB (1 << 5)
	71	#define TCX_THC_MISC_INT (1 << 4)
	72	#define TCX_THC_MISC_INIT 0x9f
	73	#define TCX_THC_REV_REV_SHIFT 20
	74	#define TCX_THC_REV_REV_MASK 15
	75	#define TCX_THC_REV_MINREV_SHIFT 28
	76	#define TCX_THC_REV_MINREV_MASK 15
	77
	78	/* The contents are unknown */
	79	struct tcx_tec {
50312ce9 DM	80	u32 tec_matrix;
	81	u32 tec_clip;
	82	u32 tec_vdc;
1da177e4 LT	83	};
	84
	85	struct tcx_thc {
50312ce9	86	u32 thc_rev;
1da177e4	87	u32 thc_pad0[511];
50312ce9 DM	88	u32 thc_hs; /* hsync timing */
	89	u32 thc_hsdvs;
	90	u32 thc_hd;
	91	u32 thc_vs; /* vsync timing */
	92	u32 thc_vd;
	93	u32 thc_refresh;
	94	u32 thc_misc;
1da177e4	95	u32 thc_pad1[56];
50312ce9 DM	96	u32 thc_cursxy; /* cursor x,y position (16 bits each) */
	97	u32 thc_cursmask[32]; /* cursor mask bits */
	98	u32 thc_cursbits[32]; /* what to show where mask enabled */
1da177e4 LT	99	};
	100
	101	struct bt_regs {
50312ce9 DM	102	u32 addr;
	103	u32 color_map;
	104	u32 control;
	105	u32 cursor;
1da177e4 LT	106	};
	107
	108	#define TCX_MMAP_ENTRIES 14
	109
	110	struct tcx_par {
	111	spinlock_t lock;
	112	struct bt_regs __iomem *bt;
	113	struct tcx_thc __iomem *thc;
	114	struct tcx_tec __iomem *tec;
50312ce9	115	u32 __iomem *cplane;
1da177e4 LT	116
	117	u32 flags;
	118	#define TCX_FLAG_BLANKED 0x00000001
	119
	120	unsigned long physbase;
50312ce9	121	unsigned long which_io;
1da177e4 LT	122	unsigned long fbsize;
	123
	124	struct sbus_mmap_map mmap_map[TCX_MMAP_ENTRIES];
	125	int lowdepth;
1da177e4 LT	126	};
	127
	128	/* Reset control plane so that WID is 8-bit plane. */
	129	static void __tcx_set_control_plane (struct tcx_par *par)
	130	{
50312ce9	131	u32 __iomem p, pend;
1da177e4 LT	132
	133	if (par->lowdepth)
	134	return;
	135
	136	p = par->cplane;
	137	if (p == NULL)
	138	return;
	139	for (pend = p + par->fbsize; p < pend; p++) {
	140	u32 tmp = sbus_readl(p);
	141
	142	tmp &= 0xffffff;
	143	sbus_writel(tmp, p);
	144	}
	145	}
	146
	147	static void tcx_reset (struct fb_info *info)
	148	{
	149	struct tcx_par par = (struct tcx_par ) info->par;
	150	unsigned long flags;
	151
	152	spin_lock_irqsave(&par->lock, flags);
	153	__tcx_set_control_plane(par);
	154	spin_unlock_irqrestore(&par->lock, flags);
	155	}
	156
6ee7c152 TC	157	static int tcx_pan_display(struct fb_var_screeninfo var, struct fb_info info)
	158	{
	159	tcx_reset(info);
	160	return 0;
	161	}
	162
1da177e4 LT	163	/**
	164	* tcx_setcolreg - Optional function. Sets a color register.
	165	* @regno: boolean, 0 copy local, 1 get_user() function
	166	* @red: frame buffer colormap structure
	167	* @green: The green value which can be up to 16 bits wide
	168	* @blue: The blue value which can be up to 16 bits wide.
	169	* @transp: If supported the alpha value which can be up to 16 bits wide.
	170	* @info: frame buffer info structure
	171	*/
	172	static int tcx_setcolreg(unsigned regno,
	173	unsigned red, unsigned green, unsigned blue,
	174	unsigned transp, struct fb_info *info)
	175	{
	176	struct tcx_par par = (struct tcx_par ) info->par;
	177	struct bt_regs __iomem *bt = par->bt;
	178	unsigned long flags;
	179
	180	if (regno >= 256)
	181	return 1;
	182
	183	red >>= 8;
	184	green >>= 8;
	185	blue >>= 8;
	186
	187	spin_lock_irqsave(&par->lock, flags);
	188
	189	sbus_writel(regno << 24, &bt->addr);
	190	sbus_writel(red << 24, &bt->color_map);
	191	sbus_writel(green << 24, &bt->color_map);
	192	sbus_writel(blue << 24, &bt->color_map);
	193
	194	spin_unlock_irqrestore(&par->lock, flags);
	195
	196	return 0;
	197	}
	198
	199	/**
	200	* tcx_blank - Optional function. Blanks the display.
	201	* @blank_mode: the blank mode we want.
	202	* @info: frame buffer structure that represents a single frame buffer
	203	*/
	204	static int
	205	tcx_blank(int blank, struct fb_info *info)
	206	{
	207	struct tcx_par par = (struct tcx_par ) info->par;
	208	struct tcx_thc __iomem *thc = par->thc;
	209	unsigned long flags;
	210	u32 val;
	211
	212	spin_lock_irqsave(&par->lock, flags);
	213
	214	val = sbus_readl(&thc->thc_misc);
	215
	216	switch (blank) {
	217	case FB_BLANK_UNBLANK: /* Unblanking */
	218	val &= ~(TCX_THC_MISC_VSYNC_DIS \|
	219	TCX_THC_MISC_HSYNC_DIS);
	220	val \|= TCX_THC_MISC_VIDEO;
	221	par->flags &= ~TCX_FLAG_BLANKED;
	222	break;
	223
	224	case FB_BLANK_NORMAL: /* Normal blanking */
	225	val &= ~TCX_THC_MISC_VIDEO;
	226	par->flags \|= TCX_FLAG_BLANKED;
227	break;
228
229	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
230	val \|= TCX_THC_MISC_VSYNC_DIS;
231	break;
232	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
233	val \|= TCX_THC_MISC_HSYNC_DIS;
234	break;
235
236	case FB_BLANK_POWERDOWN: /* Poweroff */
237	break;
238	};
239
240	sbus_writel(val, &thc->thc_misc);
241
242	spin_unlock_irqrestore(&par->lock, flags);
243
244	return 0;
245	}
246
247	static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
248	{
249	.voff = TCX_RAM8BIT,
250	.size = SBUS_MMAP_FBSIZE(1)
251	},
252	{
253	.voff = TCX_RAM24BIT,
254	.size = SBUS_MMAP_FBSIZE(4)
255	},
256	{
257	.voff = TCX_UNK3,
258	.size = SBUS_MMAP_FBSIZE(8)
259	},
260	{
261	.voff = TCX_UNK4,
262	.size = SBUS_MMAP_FBSIZE(8)
263	},
264	{
265	.voff = TCX_CONTROLPLANE,
266	.size = SBUS_MMAP_FBSIZE(4)
267	},
268	{
269	.voff = TCX_UNK6,
270	.size = SBUS_MMAP_FBSIZE(8)
271	},
272	{
273	.voff = TCX_UNK7,
274	.size = SBUS_MMAP_FBSIZE(8)
275	},
276	{
277	.voff = TCX_TEC,
278	.size = PAGE_SIZE
279	},
280	{
281	.voff = TCX_BTREGS,
282	.size = PAGE_SIZE
283	},
284	{
285	.voff = TCX_THC,
286	.size = PAGE_SIZE
287	},
288	{
289	.voff = TCX_DHC,
290	.size = PAGE_SIZE
291	},
292	{
293	.voff = TCX_ALT,
294	.size = PAGE_SIZE
295	},
296	{
297	.voff = TCX_UNK2,
298	.size = 0x20000
299	},
300	{ .size = 0 }
301	};
302
216d526c	303	static int tcx_mmap(struct fb_info info, struct vm_area_struct vma)
1da177e4 LT	304	{
	305	struct tcx_par par = (struct tcx_par )info->par;
	306
	307	return sbusfb_mmap_helper(par->mmap_map,
	308	par->physbase, par->fbsize,
50312ce9	309	par->which_io, vma);
1da177e4 LT	310	}
1da177e4 LT	311
67a6680d CH	312	static int tcx_ioctl(struct fb_info *info, unsigned int cmd,
67a6680d CH	313	unsigned long arg)
1da177e4 LT	314	{
	315	struct tcx_par par = (struct tcx_par ) info->par;
	316
	317	return sbusfb_ioctl_helper(cmd, arg, info,
	318	FBTYPE_TCXCOLOR,
	319	(par->lowdepth ? 8 : 24),
	320	par->fbsize);
	321	}
	322
	323	/*
	324	* Initialisation
	325	*/
	326
	327	static void
	328	tcx_init_fix(struct fb_info *info, int linebytes)
	329	{
	330	struct tcx_par par = (struct tcx_par )info->par;
	331	const char *tcx_name;
	332
	333	if (par->lowdepth)
	334	tcx_name = "TCX8";
	335	else
	336	tcx_name = "TCX24";
	337
	338	strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));
	339
	340	info->fix.type = FB_TYPE_PACKED_PIXELS;
	341	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
	342
	343	info->fix.line_length = linebytes;
	344
	345	info->fix.accel = FB_ACCEL_SUN_TCX;
	346	}
	347
	348	struct all_info {
	349	struct fb_info info;
	350	struct tcx_par par;
1da177e4	351	};
1da177e4	352
e3a411a3	353	static void tcx_unmap_regs(struct of_device op, struct all_info all)
1da177e4	354	{
50312ce9	355	if (all->par.tec)
e3a411a3 DM	356	of_iounmap(&op->resource[7],
e3a411a3 DM	357	all->par.tec, sizeof(struct tcx_tec));
50312ce9	358	if (all->par.thc)
e3a411a3 DM	359	of_iounmap(&op->resource[9],
e3a411a3 DM	360	all->par.thc, sizeof(struct tcx_thc));
50312ce9	361	if (all->par.bt)
e3a411a3 DM	362	of_iounmap(&op->resource[8],
e3a411a3 DM	363	all->par.bt, sizeof(struct bt_regs));
50312ce9	364	if (all->par.cplane)
e3a411a3 DM	365	of_iounmap(&op->resource[4],
e3a411a3 DM	366	all->par.cplane, all->par.fbsize * sizeof(u32));
50312ce9	367	if (all->info.screen_base)
e3a411a3 DM	368	of_iounmap(&op->resource[0],
e3a411a3 DM	369	all->info.screen_base, all->par.fbsize);
50312ce9	370	}
1da177e4	371
50312ce9 DM	372	static int __devinit tcx_init_one(struct of_device *op)
	373	{
	374	struct device_node *dp = op->node;
	375	struct all_info *all;
	376	int linebytes, i, err;
1da177e4	377
50312ce9 DM	378	all = kzalloc(sizeof(*all), GFP_KERNEL);
	379	if (!all)
	380	return -ENOMEM;
1da177e4 LT	381
1da177e4 LT	382	spin_lock_init(&all->par.lock);
1da177e4	383
50312ce9 DM	384	all->par.lowdepth =
50312ce9 DM	385	(of_find_property(dp, "tcx-8-bit", NULL) != NULL);
1da177e4	386
50312ce9	387	sbusfb_fill_var(&all->info.var, dp->node, 8);
6ee7c152 TC	388	all->info.var.red.length = 8;
	389	all->info.var.green.length = 8;
	390	all->info.var.blue.length = 8;
1da177e4	391
50312ce9 DM	392	linebytes = of_getintprop_default(dp, "linebytes",
50312ce9 DM	393	all->info.var.xres);
1da177e4 LT	394	all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
1da177e4 LT	395
50312ce9 DM	396	all->par.tec = of_ioremap(&op->resource[7], 0,
	397	sizeof(struct tcx_tec), "tcx tec");
	398	all->par.thc = of_ioremap(&op->resource[9], 0,
	399	sizeof(struct tcx_thc), "tcx thc");
	400	all->par.bt = of_ioremap(&op->resource[8], 0,
	401	sizeof(struct bt_regs), "tcx dac");
	402	all->info.screen_base = of_ioremap(&op->resource[0], 0,
	403	all->par.fbsize, "tcx ram");
	404	if (!all->par.tec \|\| !all->par.thc \|\|
	405	!all->par.bt \|\| !all->info.screen_base) {
e3a411a3	406	tcx_unmap_regs(op, all);
50312ce9 DM	407	kfree(all);
	408	return -ENOMEM;
	409	}
	410
1da177e4 LT	411	memcpy(&all->par.mmap_map, &__tcx_mmap_map, sizeof(all->par.mmap_map));
1da177e4 LT	412	if (!all->par.lowdepth) {
50312ce9 DM	413	all->par.cplane = of_ioremap(&op->resource[4], 0,
	414	all->par.fbsize * sizeof(u32),
	415	"tcx cplane");
	416	if (!all->par.cplane) {
e3a411a3	417	tcx_unmap_regs(op, all);
50312ce9 DM	418	kfree(all);
	419	return -ENOMEM;
	420	}
1da177e4 LT	421	} else {
	422	all->par.mmap_map[1].size = SBUS_MMAP_EMPTY;
	423	all->par.mmap_map[4].size = SBUS_MMAP_EMPTY;
	424	all->par.mmap_map[5].size = SBUS_MMAP_EMPTY;
	425	all->par.mmap_map[6].size = SBUS_MMAP_EMPTY;
	426	}
	427
	428	all->par.physbase = 0;
50312ce9 DM	429	all->par.which_io = op->resource[0].flags & IORESOURCE_BITS;
50312ce9 DM	430
1da177e4 LT	431	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
	432	int j;
	433
	434	switch (i) {
	435	case 10:
	436	j = 12;
	437	break;
	438
	439	case 11: case 12:
	440	j = i - 1;
	441	break;
	442
	443	default:
	444	j = i;
	445	break;
	446	};
50312ce9	447	all->par.mmap_map[i].poff = op->resource[j].start;
1da177e4 LT	448	}
	449
	450	all->info.flags = FBINFO_DEFAULT;
	451	all->info.fbops = &tcx_ops;
1da177e4 LT	452	all->info.par = &all->par;
	453
	454	/* Initialize brooktree DAC. */
	455	sbus_writel(0x04 << 24, &all->par.bt->addr); /* color planes */
	456	sbus_writel(0xff << 24, &all->par.bt->control);
	457	sbus_writel(0x05 << 24, &all->par.bt->addr);
	458	sbus_writel(0x00 << 24, &all->par.bt->control);
	459	sbus_writel(0x06 << 24, &all->par.bt->addr); /* overlay plane */
	460	sbus_writel(0x73 << 24, &all->par.bt->control);
	461	sbus_writel(0x07 << 24, &all->par.bt->addr);
	462	sbus_writel(0x00 << 24, &all->par.bt->control);
	463
	464	tcx_reset(&all->info);
	465
2c27d4e5	466	tcx_blank(FB_BLANK_UNBLANK, &all->info);
1da177e4 LT	467
1da177e4 LT	468	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
e3a411a3	469	tcx_unmap_regs(op, all);
1da177e4	470	kfree(all);
50312ce9	471	return -ENOMEM;
1da177e4 LT	472	}
1da177e4 LT	473
6ee7c152	474	fb_set_cmap(&all->info.cmap, &all->info);
1da177e4 LT	475	tcx_init_fix(&all->info, linebytes);
1da177e4 LT	476
50312ce9 DM	477	err = register_framebuffer(&all->info);
50312ce9 DM	478	if (err < 0) {
1da177e4	479	fb_dealloc_cmap(&all->info.cmap);
e3a411a3	480	tcx_unmap_regs(op, all);
1da177e4	481	kfree(all);
50312ce9	482	return err;
1da177e4 LT	483	}
1da177e4 LT	484
50312ce9	485	dev_set_drvdata(&op->dev, all);
1da177e4	486
50312ce9 DM	487	printk("%s: TCX at %lx:%lx, %s\n",
	488	dp->full_name,
	489	all->par.which_io,
	490	op->resource[0].start,
1da177e4	491	all->par.lowdepth ? "8-bit only" : "24-bit depth");
50312ce9 DM	492
50312ce9 DM	493	return 0;
1da177e4 LT	494	}
1da177e4 LT	495
50312ce9	496	static int __devinit tcx_probe(struct of_device dev, const struct of_device_id match)
1da177e4	497	{
50312ce9	498	struct of_device *op = to_of_device(&dev->dev);
1da177e4	499
50312ce9 DM	500	return tcx_init_one(op);
50312ce9 DM	501	}
1da177e4	502
e3a411a3	503	static int __devexit tcx_remove(struct of_device *op)
50312ce9	504	{
e3a411a3	505	struct all_info *all = dev_get_drvdata(&op->dev);
50312ce9 DM	506
	507	unregister_framebuffer(&all->info);
	508	fb_dealloc_cmap(&all->info.cmap);
	509
e3a411a3	510	tcx_unmap_regs(op, all);
50312ce9 DM	511
	512	kfree(all);
	513
e3a411a3	514	dev_set_drvdata(&op->dev, NULL);
1da177e4 LT	515
	516	return 0;
	517	}
	518
50312ce9 DM	519	static struct of_device_id tcx_match[] = {
	520	{
	521	.name = "SUNW,tcx",
	522	},
	523	{},
	524	};
	525	MODULE_DEVICE_TABLE(of, tcx_match);
1da177e4	526
50312ce9 DM	527	static struct of_platform_driver tcx_driver = {
	528	.name = "tcx",
	529	.match_table = tcx_match,
	530	.probe = tcx_probe,
	531	.remove = __devexit_p(tcx_remove),
	532	};
1da177e4	533
50312ce9 DM	534	int __init tcx_init(void)
	535	{
	536	if (fb_get_options("tcxfb", NULL))
	537	return -ENODEV;
	538
	539	return of_register_driver(&tcx_driver, &of_bus_type);
1da177e4 LT	540	}
1da177e4 LT	541
50312ce9	542	void __exit tcx_exit(void)
1da177e4	543	{
50312ce9	544	of_unregister_driver(&tcx_driver);
1da177e4 LT	545	}
	546
	547	module_init(tcx_init);
1da177e4	548	module_exit(tcx_exit);
1da177e4 LT	549
1da177e4 LT	550	MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
50312ce9 DM	551	MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
50312ce9 DM	552	MODULE_VERSION("2.0");
1da177e4	553	MODULE_LICENSE("GPL");