[GitHub/mt8127/android_kernel_alcatel_ttab.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 <linux/of_device.h>

#include <asm/io.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;
}

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

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

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

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

	spin_lock_init(&par->lock);

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

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

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

	par->tec = of_ioremap(&op->resource[7], 0,
				  sizeof(struct tcx_tec), "tcx tec");
	par->thc = of_ioremap(&op->resource[9], 0,
				  sizeof(struct tcx_thc), "tcx thc");
	par->bt = of_ioremap(&op->resource[8], 0,
				 sizeof(struct bt_regs), "tcx dac");
	info->screen_base = of_ioremap(&op->resource[0], 0,
					   par->fbsize, "tcx ram");
	if (!par->tec || !par->thc ||
	    !par->bt || !info->screen_base)
		goto out_unmap_regs;

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

	par->physbase = op->resource[0].start;
	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;
		};
		par->mmap_map[i].poff = op->resource[j].start;
	}

	info->flags = FBINFO_DEFAULT;
	info->fbops = &tcx_ops;

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

	tcx_reset(info);

	tcx_blank(FB_BLANK_UNBLANK, info);

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

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

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

	dev_set_drvdata(&op->dev, info);

	printk(KERN_INFO "%s: TCX at %lx:%lx, %s\n",
	       dp->full_name,
	       par->which_io,
	       par->physbase,
	       par->lowdepth ? "8-bit only" : "24-bit depth");

	return 0;

out_dealloc_cmap:
	fb_dealloc_cmap(&info->cmap);

out_unmap_regs:
	tcx_unmap_regs(op, info, par);

out_err:
	return err;
}

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

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

	tcx_unmap_regs(op, info, par);

	framebuffer_release(info);

	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),
};

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

	return of_register_driver(&tcx_driver, &of_bus_type);
}

static 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>
6cd5a86b	20	#include <linux/of_device.h>
1da177e4 LT	21
1da177e4 LT	22	#include <asm/io.h>
1da177e4 LT	23	#include <asm/fbio.h>
	24
	25	#include "sbuslib.h"
	26
	27	/*
	28	* Local functions.
	29	*/
	30
	31	static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
	32	unsigned, struct fb_info *);
	33	static int tcx_blank(int, struct fb_info *);
	34
216d526c	35	static int tcx_mmap(struct fb_info , struct vm_area_struct );
67a6680d	36	static int tcx_ioctl(struct fb_info *, unsigned int, unsigned long);
6ee7c152	37	static int tcx_pan_display(struct fb_var_screeninfo , struct fb_info );
1da177e4 LT	38
	39	/*
	40	* Frame buffer operations
	41	*/
	42
	43	static struct fb_ops tcx_ops = {
	44	.owner = THIS_MODULE,
	45	.fb_setcolreg = tcx_setcolreg,
	46	.fb_blank = tcx_blank,
6ee7c152	47	.fb_pan_display = tcx_pan_display,
1da177e4 LT	48	.fb_fillrect = cfb_fillrect,
	49	.fb_copyarea = cfb_copyarea,
	50	.fb_imageblit = cfb_imageblit,
	51	.fb_mmap = tcx_mmap,
	52	.fb_ioctl = tcx_ioctl,
9ffb83bc CH	53	#ifdef CONFIG_COMPAT
	54	.fb_compat_ioctl = sbusfb_compat_ioctl,
	55	#endif
1da177e4 LT	56	};
	57
	58	/* THC definitions */
	59	#define TCX_THC_MISC_REV_SHIFT 16
	60	#define TCX_THC_MISC_REV_MASK 15
	61	#define TCX_THC_MISC_VSYNC_DIS (1 << 25)
	62	#define TCX_THC_MISC_HSYNC_DIS (1 << 24)
	63	#define TCX_THC_MISC_RESET (1 << 12)
	64	#define TCX_THC_MISC_VIDEO (1 << 10)
	65	#define TCX_THC_MISC_SYNC (1 << 9)
	66	#define TCX_THC_MISC_VSYNC (1 << 8)
	67	#define TCX_THC_MISC_SYNC_ENAB (1 << 7)
	68	#define TCX_THC_MISC_CURS_RES (1 << 6)
	69	#define TCX_THC_MISC_INT_ENAB (1 << 5)
	70	#define TCX_THC_MISC_INT (1 << 4)
	71	#define TCX_THC_MISC_INIT 0x9f
	72	#define TCX_THC_REV_REV_SHIFT 20
	73	#define TCX_THC_REV_REV_MASK 15
	74	#define TCX_THC_REV_MINREV_SHIFT 28
	75	#define TCX_THC_REV_MINREV_MASK 15
	76
	77	/* The contents are unknown */
	78	struct tcx_tec {
50312ce9 DM	79	u32 tec_matrix;
	80	u32 tec_clip;
	81	u32 tec_vdc;
1da177e4 LT	82	};
	83
	84	struct tcx_thc {
50312ce9	85	u32 thc_rev;
5b81d689	86	u32 thc_pad0[511];
50312ce9 DM	87	u32 thc_hs; /* hsync timing */
	88	u32 thc_hsdvs;
	89	u32 thc_hd;
	90	u32 thc_vs; /* vsync timing */
	91	u32 thc_vd;
	92	u32 thc_refresh;
	93	u32 thc_misc;
1da177e4	94	u32 thc_pad1[56];
50312ce9 DM	95	u32 thc_cursxy; /* cursor x,y position (16 bits each) */
	96	u32 thc_cursmask[32]; /* cursor mask bits */
	97	u32 thc_cursbits[32]; /* what to show where mask enabled */
1da177e4 LT	98	};
	99
	100	struct bt_regs {
50312ce9 DM	101	u32 addr;
	102	u32 color_map;
	103	u32 control;
	104	u32 cursor;
1da177e4 LT	105	};
	106
	107	#define TCX_MMAP_ENTRIES 14
	108
	109	struct tcx_par {
	110	spinlock_t lock;
	111	struct bt_regs __iomem *bt;
	112	struct tcx_thc __iomem *thc;
	113	struct tcx_tec __iomem *tec;
50312ce9	114	u32 __iomem *cplane;
1da177e4 LT	115
	116	u32 flags;
	117	#define TCX_FLAG_BLANKED 0x00000001
	118
	119	unsigned long physbase;
50312ce9	120	unsigned long which_io;
1da177e4 LT	121	unsigned long fbsize;
	122
	123	struct sbus_mmap_map mmap_map[TCX_MMAP_ENTRIES];
	124	int lowdepth;
1da177e4 LT	125	};
	126
	127	/* Reset control plane so that WID is 8-bit plane. */
5b81d689	128	static void __tcx_set_control_plane(struct tcx_par *par)
1da177e4	129	{
50312ce9	130	u32 __iomem p, pend;
5b81d689	131
1da177e4 LT	132	if (par->lowdepth)
	133	return;
	134
	135	p = par->cplane;
	136	if (p == NULL)
	137	return;
	138	for (pend = p + par->fbsize; p < pend; p++) {
	139	u32 tmp = sbus_readl(p);
	140
	141	tmp &= 0xffffff;
	142	sbus_writel(tmp, p);
	143	}
	144	}
5b81d689 RR	145
5b81d689 RR	146	static void tcx_reset(struct fb_info *info)
1da177e4 LT	147	{
	148	struct tcx_par par = (struct tcx_par ) info->par;
	149	unsigned long flags;
	150
	151	spin_lock_irqsave(&par->lock, flags);
	152	__tcx_set_control_plane(par);
	153	spin_unlock_irqrestore(&par->lock, flags);
	154	}
	155
6ee7c152 TC	156	static int tcx_pan_display(struct fb_var_screeninfo var, struct fb_info info)
	157	{
	158	tcx_reset(info);
	159	return 0;
	160	}
	161
1da177e4 LT	162	/**
	163	* tcx_setcolreg - Optional function. Sets a color register.
	164	* @regno: boolean, 0 copy local, 1 get_user() function
	165	* @red: frame buffer colormap structure
	166	* @green: The green value which can be up to 16 bits wide
	167	* @blue: The blue value which can be up to 16 bits wide.
	168	* @transp: If supported the alpha value which can be up to 16 bits wide.
	169	* @info: frame buffer info structure
	170	*/
	171	static int tcx_setcolreg(unsigned regno,
	172	unsigned red, unsigned green, unsigned blue,
	173	unsigned transp, struct fb_info *info)
	174	{
	175	struct tcx_par par = (struct tcx_par ) info->par;
	176	struct bt_regs __iomem *bt = par->bt;
	177	unsigned long flags;
	178
	179	if (regno >= 256)
	180	return 1;
	181
	182	red >>= 8;
	183	green >>= 8;
	184	blue >>= 8;
	185
	186	spin_lock_irqsave(&par->lock, flags);
	187
	188	sbus_writel(regno << 24, &bt->addr);
	189	sbus_writel(red << 24, &bt->color_map);
	190	sbus_writel(green << 24, &bt->color_map);
	191	sbus_writel(blue << 24, &bt->color_map);
	192
	193	spin_unlock_irqrestore(&par->lock, flags);
	194
	195	return 0;
	196	}
	197
	198	/**
	199	* tcx_blank - Optional function. Blanks the display.
	200	* @blank_mode: the blank mode we want.
	201	* @info: frame buffer structure that represents a single frame buffer
	202	*/
	203	static int
	204	tcx_blank(int blank, struct fb_info *info)
	205	{
	206	struct tcx_par par = (struct tcx_par ) info->par;
	207	struct tcx_thc __iomem *thc = par->thc;
	208	unsigned long flags;
	209	u32 val;
	210
	211	spin_lock_irqsave(&par->lock, flags);
	212
	213	val = sbus_readl(&thc->thc_misc);
	214
	215	switch (blank) {
	216	case FB_BLANK_UNBLANK: /* Unblanking */
	217	val &= ~(TCX_THC_MISC_VSYNC_DIS \|
	218	TCX_THC_MISC_HSYNC_DIS);
	219	val \|= TCX_THC_MISC_VIDEO;
	220	par->flags &= ~TCX_FLAG_BLANKED;
	221	break;
	222
	223	case FB_BLANK_NORMAL: /* Normal blanking */
	224	val &= ~TCX_THC_MISC_VIDEO;
	225	par->flags \|= TCX_FLAG_BLANKED;
226	break;
227
228	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
229	val \|= TCX_THC_MISC_VSYNC_DIS;
230	break;
231	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
232	val \|= TCX_THC_MISC_HSYNC_DIS;
233	break;
234
235	case FB_BLANK_POWERDOWN: /* Poweroff */
236	break;
237	};
238
239	sbus_writel(val, &thc->thc_misc);
240
241	spin_unlock_irqrestore(&par->lock, flags);
242
243	return 0;
244	}
245
246	static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
247	{
248	.voff = TCX_RAM8BIT,
249	.size = SBUS_MMAP_FBSIZE(1)
250	},
251	{
252	.voff = TCX_RAM24BIT,
253	.size = SBUS_MMAP_FBSIZE(4)
254	},
255	{
256	.voff = TCX_UNK3,
257	.size = SBUS_MMAP_FBSIZE(8)
258	},
259	{
260	.voff = TCX_UNK4,
261	.size = SBUS_MMAP_FBSIZE(8)
262	},
263	{
264	.voff = TCX_CONTROLPLANE,
265	.size = SBUS_MMAP_FBSIZE(4)
266	},
267	{
268	.voff = TCX_UNK6,
269	.size = SBUS_MMAP_FBSIZE(8)
270	},
271	{
272	.voff = TCX_UNK7,
273	.size = SBUS_MMAP_FBSIZE(8)
274	},
275	{
276	.voff = TCX_TEC,
277	.size = PAGE_SIZE
278	},
279	{
280	.voff = TCX_BTREGS,
281	.size = PAGE_SIZE
282	},
283	{
284	.voff = TCX_THC,
285	.size = PAGE_SIZE
286	},
287	{
288	.voff = TCX_DHC,
289	.size = PAGE_SIZE
290	},
291	{
292	.voff = TCX_ALT,
293	.size = PAGE_SIZE
294	},
295	{
296	.voff = TCX_UNK2,
297	.size = 0x20000
298	},
299	{ .size = 0 }
300	};
301
216d526c	302	static int tcx_mmap(struct fb_info info, struct vm_area_struct vma)
1da177e4 LT	303	{
	304	struct tcx_par par = (struct tcx_par )info->par;
	305
	306	return sbusfb_mmap_helper(par->mmap_map,
	307	par->physbase, par->fbsize,
50312ce9	308	par->which_io, vma);
1da177e4 LT	309	}
1da177e4 LT	310
67a6680d CH	311	static int tcx_ioctl(struct fb_info *info, unsigned int cmd,
67a6680d CH	312	unsigned long arg)
1da177e4 LT	313	{
	314	struct tcx_par par = (struct tcx_par ) info->par;
	315
	316	return sbusfb_ioctl_helper(cmd, arg, info,
	317	FBTYPE_TCXCOLOR,
	318	(par->lowdepth ? 8 : 24),
	319	par->fbsize);
	320	}
	321
	322	/*
	323	* Initialisation
	324	*/
	325
	326	static void
	327	tcx_init_fix(struct fb_info *info, int linebytes)
	328	{
	329	struct tcx_par par = (struct tcx_par )info->par;
	330	const char *tcx_name;
	331
	332	if (par->lowdepth)
	333	tcx_name = "TCX8";
	334	else
	335	tcx_name = "TCX24";
	336
	337	strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));
	338
	339	info->fix.type = FB_TYPE_PACKED_PIXELS;
	340	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
	341
	342	info->fix.line_length = linebytes;
	343
	344	info->fix.accel = FB_ACCEL_SUN_TCX;
	345	}
	346
c7f439b9 DM	347	static void tcx_unmap_regs(struct of_device op, struct fb_info info,
c7f439b9 DM	348	struct tcx_par *par)
1da177e4	349	{
c7f439b9	350	if (par->tec)
e3a411a3	351	of_iounmap(&op->resource[7],
c7f439b9 DM	352	par->tec, sizeof(struct tcx_tec));
c7f439b9 DM	353	if (par->thc)
e3a411a3	354	of_iounmap(&op->resource[9],
c7f439b9 DM	355	par->thc, sizeof(struct tcx_thc));
c7f439b9 DM	356	if (par->bt)
e3a411a3	357	of_iounmap(&op->resource[8],
c7f439b9 DM	358	par->bt, sizeof(struct bt_regs));
c7f439b9 DM	359	if (par->cplane)
e3a411a3	360	of_iounmap(&op->resource[4],
c7f439b9 DM	361	par->cplane, par->fbsize * sizeof(u32));
c7f439b9 DM	362	if (info->screen_base)
e3a411a3	363	of_iounmap(&op->resource[0],
c7f439b9	364	info->screen_base, par->fbsize);
50312ce9	365	}
1da177e4	366
5b81d689 RR	367	static int __devinit tcx_probe(struct of_device *op,
5b81d689 RR	368	const struct of_device_id *match)
50312ce9 DM	369	{
50312ce9 DM	370	struct device_node *dp = op->node;
c7f439b9 DM	371	struct fb_info *info;
c7f439b9 DM	372	struct tcx_par *par;
50312ce9	373	int linebytes, i, err;
1da177e4	374
c7f439b9	375	info = framebuffer_alloc(sizeof(struct tcx_par), &op->dev);
1da177e4	376
c7f439b9 DM	377	err = -ENOMEM;
	378	if (!info)
	379	goto out_err;
	380	par = info->par;
1da177e4	381
c7f439b9 DM	382	spin_lock_init(&par->lock);
	383
	384	par->lowdepth =
50312ce9	385	(of_find_property(dp, "tcx-8-bit", NULL) != NULL);
1da177e4	386
6cd5a86b	387	sbusfb_fill_var(&info->var, dp, 8);
c7f439b9 DM	388	info->var.red.length = 8;
	389	info->var.green.length = 8;
	390	info->var.blue.length = 8;
1da177e4	391
50312ce9	392	linebytes = of_getintprop_default(dp, "linebytes",
c7f439b9 DM	393	info->var.xres);
c7f439b9 DM	394	par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);
1da177e4	395
c7f439b9	396	par->tec = of_ioremap(&op->resource[7], 0,
50312ce9	397	sizeof(struct tcx_tec), "tcx tec");
c7f439b9	398	par->thc = of_ioremap(&op->resource[9], 0,
50312ce9	399	sizeof(struct tcx_thc), "tcx thc");
c7f439b9	400	par->bt = of_ioremap(&op->resource[8], 0,
50312ce9	401	sizeof(struct bt_regs), "tcx dac");
c7f439b9 DM	402	info->screen_base = of_ioremap(&op->resource[0], 0,
	403	par->fbsize, "tcx ram");
	404	if (!par->tec \|\| !par->thc \|\|
	405	!par->bt \|\| !info->screen_base)
	406	goto out_unmap_regs;
	407
	408	memcpy(&par->mmap_map, &__tcx_mmap_map, sizeof(par->mmap_map));
	409	if (!par->lowdepth) {
	410	par->cplane = of_ioremap(&op->resource[4], 0,
	411	par->fbsize * sizeof(u32),
50312ce9	412	"tcx cplane");
c7f439b9 DM	413	if (!par->cplane)
c7f439b9 DM	414	goto out_unmap_regs;
1da177e4	415	} else {
c7f439b9 DM	416	par->mmap_map[1].size = SBUS_MMAP_EMPTY;
	417	par->mmap_map[4].size = SBUS_MMAP_EMPTY;
	418	par->mmap_map[5].size = SBUS_MMAP_EMPTY;
	419	par->mmap_map[6].size = SBUS_MMAP_EMPTY;
1da177e4 LT	420	}
1da177e4 LT	421
403ae52a	422	par->physbase = op->resource[0].start;
c7f439b9	423	par->which_io = op->resource[0].flags & IORESOURCE_BITS;
50312ce9	424
1da177e4 LT	425	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
	426	int j;
	427
	428	switch (i) {
	429	case 10:
	430	j = 12;
	431	break;
	432
	433	case 11: case 12:
	434	j = i - 1;
	435	break;
	436
	437	default:
	438	j = i;
	439	break;
	440	};
c7f439b9	441	par->mmap_map[i].poff = op->resource[j].start;
1da177e4 LT	442	}
1da177e4 LT	443
c7f439b9 DM	444	info->flags = FBINFO_DEFAULT;
c7f439b9 DM	445	info->fbops = &tcx_ops;
1da177e4 LT	446
1da177e4 LT	447	/* Initialize brooktree DAC. */
c7f439b9 DM	448	sbus_writel(0x04 << 24, &par->bt->addr); /* color planes */
	449	sbus_writel(0xff << 24, &par->bt->control);
	450	sbus_writel(0x05 << 24, &par->bt->addr);
	451	sbus_writel(0x00 << 24, &par->bt->control);
	452	sbus_writel(0x06 << 24, &par->bt->addr); /* overlay plane */
	453	sbus_writel(0x73 << 24, &par->bt->control);
	454	sbus_writel(0x07 << 24, &par->bt->addr);
	455	sbus_writel(0x00 << 24, &par->bt->control);
	456
	457	tcx_reset(info);
1da177e4	458
c7f439b9	459	tcx_blank(FB_BLANK_UNBLANK, info);
1da177e4	460
c7f439b9 DM	461	if (fb_alloc_cmap(&info->cmap, 256, 0))
	462	goto out_unmap_regs;
	463
	464	fb_set_cmap(&info->cmap, info);
	465	tcx_init_fix(info, linebytes);
	466
	467	err = register_framebuffer(info);
	468	if (err < 0)
	469	goto out_dealloc_cmap;
1da177e4	470
c7f439b9	471	dev_set_drvdata(&op->dev, info);
1da177e4	472
194f1a68	473	printk(KERN_INFO "%s: TCX at %lx:%lx, %s\n",
50312ce9	474	dp->full_name,
c7f439b9	475	par->which_io,
403ae52a	476	par->physbase,
c7f439b9	477	par->lowdepth ? "8-bit only" : "24-bit depth");
50312ce9 DM	478
50312ce9 DM	479	return 0;
c7f439b9 DM	480
	481	out_dealloc_cmap:
	482	fb_dealloc_cmap(&info->cmap);
	483
	484	out_unmap_regs:
	485	tcx_unmap_regs(op, info, par);
	486
	487	out_err:
	488	return err;
50312ce9	489	}
1da177e4	490
e3a411a3	491	static int __devexit tcx_remove(struct of_device *op)
50312ce9	492	{
c7f439b9 DM	493	struct fb_info *info = dev_get_drvdata(&op->dev);
c7f439b9 DM	494	struct tcx_par *par = info->par;
50312ce9	495
c7f439b9 DM	496	unregister_framebuffer(info);
c7f439b9 DM	497	fb_dealloc_cmap(&info->cmap);
50312ce9	498
c7f439b9	499	tcx_unmap_regs(op, info, par);
50312ce9	500
c7f439b9	501	framebuffer_release(info);
50312ce9	502
e3a411a3	503	dev_set_drvdata(&op->dev, NULL);
1da177e4 LT	504
	505	return 0;
	506	}
	507
50312ce9 DM	508	static struct of_device_id tcx_match[] = {
	509	{
	510	.name = "SUNW,tcx",
	511	},
	512	{},
	513	};
	514	MODULE_DEVICE_TABLE(of, tcx_match);
1da177e4	515
50312ce9 DM	516	static struct of_platform_driver tcx_driver = {
	517	.name = "tcx",
	518	.match_table = tcx_match,
	519	.probe = tcx_probe,
	520	.remove = __devexit_p(tcx_remove),
	521	};
1da177e4	522
f36861d5	523	static int __init tcx_init(void)
50312ce9 DM	524	{
	525	if (fb_get_options("tcxfb", NULL))
	526	return -ENODEV;
	527
	528	return of_register_driver(&tcx_driver, &of_bus_type);
1da177e4 LT	529	}
1da177e4 LT	530
f36861d5	531	static void __exit tcx_exit(void)
1da177e4	532	{
50312ce9	533	of_unregister_driver(&tcx_driver);
1da177e4 LT	534	}
	535
	536	module_init(tcx_init);
1da177e4	537	module_exit(tcx_exit);
1da177e4 LT	538
1da177e4 LT	539	MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
50312ce9 DM	540	MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
50312ce9 DM	541	MODULE_VERSION("2.0");
1da177e4	542	MODULE_LICENSE("GPL");