[linux.git] / drivers / video / tcx.c

/* tcx.c: TCX frame buffer driver
 *
 * Copyright (C) 2003, 2006 David S. Miller ([email protected])
 * Copyright (C) 1996,1998 Jakub Jelinek ([email protected])
 * Copyright (C) 1996 Miguel de Icaza ([email protected])
 * Copyright (C) 1996 Eddie C. Dost ([email protected])
 *
 * 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 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		which_io;

	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 fb_info *info)
{
	struct tcx_par *par = info->par;
	u32 __iomem *p, *pend;

	if (par->lowdepth)
		return;

	p = par->cplane;
	if (p == NULL)
		return;
	for (pend = p + info->fix.smem_len; 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(info);
	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,
				  info->fix.smem_start, info->fix.smem_len,
				  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),
				   info->fix.smem_len);
}

/*
 *  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 platform_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, info->fix.smem_len * sizeof(u32));
	if (info->screen_base)
		of_iounmap(&op->resource[0],
			   info->screen_base, info->fix.smem_len);
}

static int __devinit tcx_probe(struct platform_device *op)
{
	struct device_node *dp = op->dev.of_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);
	info->fix.smem_len = 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,
					   info->fix.smem_len, "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,
					     info->fix.smem_len * 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;
	}

	info->fix.smem_start = 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,
	       info->fix.smem_start,
	       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);
	framebuffer_release(info);

out_err:
	return err;
}

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

static struct platform_driver tcx_driver = {
	.driver = {
		.name = "tcx",
		.owner = THIS_MODULE,
		.of_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 platform_driver_register(&tcx_driver);
}

static void __exit tcx_exit(void)
{
	platform_driver_unregister(&tcx_driver);
}

module_init(tcx_init);
module_exit(tcx_exit);

MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
MODULE_AUTHOR("David S. Miller <[email protected]>");
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 ([email protected])
1da177e4 LT	4	* Copyright (C) 1996,1998 Jakub Jelinek ([email protected])
	5	* Copyright (C) 1996 Miguel de Icaza ([email protected])
	6	* Copyright (C) 1996 Eddie C. Dost ([email protected])
	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>
1da177e4 LT	15	#include <linux/delay.h>
	16	#include <linux/init.h>
	17	#include <linux/fb.h>
	18	#include <linux/mm.h>
6cd5a86b	19	#include <linux/of_device.h>
1da177e4 LT	20
1da177e4 LT	21	#include <asm/io.h>
1da177e4 LT	22	#include <asm/fbio.h>
	23
	24	#include "sbuslib.h"
	25
	26	/*
	27	* Local functions.
	28	*/
	29
	30	static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
	31	unsigned, struct fb_info *);
	32	static int tcx_blank(int, struct fb_info *);
	33
216d526c	34	static int tcx_mmap(struct fb_info , struct vm_area_struct );
67a6680d	35	static int tcx_ioctl(struct fb_info *, unsigned int, unsigned long);
6ee7c152	36	static int tcx_pan_display(struct fb_var_screeninfo , struct fb_info );
1da177e4 LT	37
	38	/*
	39	* Frame buffer operations
	40	*/
	41
	42	static struct fb_ops tcx_ops = {
	43	.owner = THIS_MODULE,
	44	.fb_setcolreg = tcx_setcolreg,
	45	.fb_blank = tcx_blank,
6ee7c152	46	.fb_pan_display = tcx_pan_display,
1da177e4 LT	47	.fb_fillrect = cfb_fillrect,
	48	.fb_copyarea = cfb_copyarea,
	49	.fb_imageblit = cfb_imageblit,
	50	.fb_mmap = tcx_mmap,
	51	.fb_ioctl = tcx_ioctl,
9ffb83bc CH	52	#ifdef CONFIG_COMPAT
	53	.fb_compat_ioctl = sbusfb_compat_ioctl,
	54	#endif
1da177e4 LT	55	};
	56
	57	/* THC definitions */
	58	#define TCX_THC_MISC_REV_SHIFT 16
	59	#define TCX_THC_MISC_REV_MASK 15
	60	#define TCX_THC_MISC_VSYNC_DIS (1 << 25)
	61	#define TCX_THC_MISC_HSYNC_DIS (1 << 24)
	62	#define TCX_THC_MISC_RESET (1 << 12)
	63	#define TCX_THC_MISC_VIDEO (1 << 10)
	64	#define TCX_THC_MISC_SYNC (1 << 9)
	65	#define TCX_THC_MISC_VSYNC (1 << 8)
	66	#define TCX_THC_MISC_SYNC_ENAB (1 << 7)
	67	#define TCX_THC_MISC_CURS_RES (1 << 6)
	68	#define TCX_THC_MISC_INT_ENAB (1 << 5)
	69	#define TCX_THC_MISC_INT (1 << 4)
	70	#define TCX_THC_MISC_INIT 0x9f
	71	#define TCX_THC_REV_REV_SHIFT 20
	72	#define TCX_THC_REV_REV_MASK 15
	73	#define TCX_THC_REV_MINREV_SHIFT 28
	74	#define TCX_THC_REV_MINREV_MASK 15
	75
	76	/* The contents are unknown */
	77	struct tcx_tec {
50312ce9 DM	78	u32 tec_matrix;
	79	u32 tec_clip;
	80	u32 tec_vdc;
1da177e4 LT	81	};
	82
	83	struct tcx_thc {
50312ce9	84	u32 thc_rev;
5b81d689	85	u32 thc_pad0[511];
50312ce9 DM	86	u32 thc_hs; /* hsync timing */
	87	u32 thc_hsdvs;
	88	u32 thc_hd;
	89	u32 thc_vs; /* vsync timing */
	90	u32 thc_vd;
	91	u32 thc_refresh;
	92	u32 thc_misc;
1da177e4	93	u32 thc_pad1[56];
50312ce9 DM	94	u32 thc_cursxy; /* cursor x,y position (16 bits each) */
	95	u32 thc_cursmask[32]; /* cursor mask bits */
	96	u32 thc_cursbits[32]; /* what to show where mask enabled */
1da177e4 LT	97	};
	98
	99	struct bt_regs {
50312ce9 DM	100	u32 addr;
	101	u32 color_map;
	102	u32 control;
	103	u32 cursor;
1da177e4 LT	104	};
	105
	106	#define TCX_MMAP_ENTRIES 14
	107
	108	struct tcx_par {
	109	spinlock_t lock;
	110	struct bt_regs __iomem *bt;
	111	struct tcx_thc __iomem *thc;
	112	struct tcx_tec __iomem *tec;
50312ce9	113	u32 __iomem *cplane;
1da177e4 LT	114
	115	u32 flags;
	116	#define TCX_FLAG_BLANKED 0x00000001
	117
50312ce9	118	unsigned long which_io;
1da177e4 LT	119
	120	struct sbus_mmap_map mmap_map[TCX_MMAP_ENTRIES];
	121	int lowdepth;
1da177e4 LT	122	};
	123
	124	/* Reset control plane so that WID is 8-bit plane. */
fe3a1aa2	125	static void __tcx_set_control_plane(struct fb_info *info)
1da177e4	126	{
fe3a1aa2	127	struct tcx_par *par = info->par;
50312ce9	128	u32 __iomem p, pend;
5b81d689	129
1da177e4 LT	130	if (par->lowdepth)
	131	return;
	132
	133	p = par->cplane;
	134	if (p == NULL)
	135	return;
fe3a1aa2	136	for (pend = p + info->fix.smem_len; p < pend; p++) {
1da177e4 LT	137	u32 tmp = sbus_readl(p);
	138
	139	tmp &= 0xffffff;
	140	sbus_writel(tmp, p);
	141	}
	142	}
5b81d689 RR	143
5b81d689 RR	144	static void tcx_reset(struct fb_info *info)
1da177e4 LT	145	{
	146	struct tcx_par par = (struct tcx_par ) info->par;
	147	unsigned long flags;
	148
	149	spin_lock_irqsave(&par->lock, flags);
fe3a1aa2	150	__tcx_set_control_plane(info);
1da177e4 LT	151	spin_unlock_irqrestore(&par->lock, flags);
	152	}
	153
6ee7c152 TC	154	static int tcx_pan_display(struct fb_var_screeninfo var, struct fb_info info)
	155	{
	156	tcx_reset(info);
	157	return 0;
	158	}
	159
1da177e4 LT	160	/**
	161	* tcx_setcolreg - Optional function. Sets a color register.
	162	* @regno: boolean, 0 copy local, 1 get_user() function
	163	* @red: frame buffer colormap structure
	164	* @green: The green value which can be up to 16 bits wide
	165	* @blue: The blue value which can be up to 16 bits wide.
	166	* @transp: If supported the alpha value which can be up to 16 bits wide.
	167	* @info: frame buffer info structure
	168	*/
	169	static int tcx_setcolreg(unsigned regno,
	170	unsigned red, unsigned green, unsigned blue,
	171	unsigned transp, struct fb_info *info)
	172	{
	173	struct tcx_par par = (struct tcx_par ) info->par;
	174	struct bt_regs __iomem *bt = par->bt;
	175	unsigned long flags;
	176
	177	if (regno >= 256)
	178	return 1;
	179
	180	red >>= 8;
	181	green >>= 8;
	182	blue >>= 8;
	183
	184	spin_lock_irqsave(&par->lock, flags);
	185
	186	sbus_writel(regno << 24, &bt->addr);
	187	sbus_writel(red << 24, &bt->color_map);
	188	sbus_writel(green << 24, &bt->color_map);
	189	sbus_writel(blue << 24, &bt->color_map);
	190
	191	spin_unlock_irqrestore(&par->lock, flags);
	192
	193	return 0;
	194	}
	195
	196	/**
	197	* tcx_blank - Optional function. Blanks the display.
	198	* @blank_mode: the blank mode we want.
	199	* @info: frame buffer structure that represents a single frame buffer
	200	*/
	201	static int
	202	tcx_blank(int blank, struct fb_info *info)
	203	{
	204	struct tcx_par par = (struct tcx_par ) info->par;
	205	struct tcx_thc __iomem *thc = par->thc;
	206	unsigned long flags;
	207	u32 val;
	208
	209	spin_lock_irqsave(&par->lock, flags);
	210
	211	val = sbus_readl(&thc->thc_misc);
	212
	213	switch (blank) {
	214	case FB_BLANK_UNBLANK: /* Unblanking */
	215	val &= ~(TCX_THC_MISC_VSYNC_DIS \|
	216	TCX_THC_MISC_HSYNC_DIS);
	217	val \|= TCX_THC_MISC_VIDEO;
	218	par->flags &= ~TCX_FLAG_BLANKED;
	219	break;
	220
	221	case FB_BLANK_NORMAL: /* Normal blanking */
	222	val &= ~TCX_THC_MISC_VIDEO;
	223	par->flags \|= TCX_FLAG_BLANKED;
224	break;
225
226	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
227	val \|= TCX_THC_MISC_VSYNC_DIS;
228	break;
229	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
230	val \|= TCX_THC_MISC_HSYNC_DIS;
231	break;
232
233	case FB_BLANK_POWERDOWN: /* Poweroff */
234	break;
235	};
236
237	sbus_writel(val, &thc->thc_misc);
238
239	spin_unlock_irqrestore(&par->lock, flags);
240
241	return 0;
242	}
243
244	static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
245	{
246	.voff = TCX_RAM8BIT,
247	.size = SBUS_MMAP_FBSIZE(1)
248	},
249	{
250	.voff = TCX_RAM24BIT,
251	.size = SBUS_MMAP_FBSIZE(4)
252	},
253	{
254	.voff = TCX_UNK3,
255	.size = SBUS_MMAP_FBSIZE(8)
256	},
257	{
258	.voff = TCX_UNK4,
259	.size = SBUS_MMAP_FBSIZE(8)
260	},
261	{
262	.voff = TCX_CONTROLPLANE,
263	.size = SBUS_MMAP_FBSIZE(4)
264	},
265	{
266	.voff = TCX_UNK6,
267	.size = SBUS_MMAP_FBSIZE(8)
268	},
269	{
270	.voff = TCX_UNK7,
271	.size = SBUS_MMAP_FBSIZE(8)
272	},
273	{
274	.voff = TCX_TEC,
275	.size = PAGE_SIZE
276	},
277	{
278	.voff = TCX_BTREGS,
279	.size = PAGE_SIZE
280	},
281	{
282	.voff = TCX_THC,
283	.size = PAGE_SIZE
284	},
285	{
286	.voff = TCX_DHC,
287	.size = PAGE_SIZE
288	},
289	{
290	.voff = TCX_ALT,
291	.size = PAGE_SIZE
292	},
293	{
294	.voff = TCX_UNK2,
295	.size = 0x20000
296	},
297	{ .size = 0 }
298	};
299
216d526c	300	static int tcx_mmap(struct fb_info info, struct vm_area_struct vma)
1da177e4 LT	301	{
	302	struct tcx_par par = (struct tcx_par )info->par;
	303
	304	return sbusfb_mmap_helper(par->mmap_map,
fe3a1aa2	305	info->fix.smem_start, info->fix.smem_len,
50312ce9	306	par->which_io, vma);
1da177e4 LT	307	}
1da177e4 LT	308
67a6680d CH	309	static int tcx_ioctl(struct fb_info *info, unsigned int cmd,
67a6680d CH	310	unsigned long arg)
1da177e4 LT	311	{
	312	struct tcx_par par = (struct tcx_par ) info->par;
	313
	314	return sbusfb_ioctl_helper(cmd, arg, info,
	315	FBTYPE_TCXCOLOR,
	316	(par->lowdepth ? 8 : 24),
fe3a1aa2	317	info->fix.smem_len);
1da177e4 LT	318	}
	319
	320	/*
	321	* Initialisation
	322	*/
	323
	324	static void
	325	tcx_init_fix(struct fb_info *info, int linebytes)
	326	{
	327	struct tcx_par par = (struct tcx_par )info->par;
	328	const char *tcx_name;
	329
	330	if (par->lowdepth)
	331	tcx_name = "TCX8";
	332	else
	333	tcx_name = "TCX24";
	334
	335	strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));
	336
	337	info->fix.type = FB_TYPE_PACKED_PIXELS;
	338	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
	339
	340	info->fix.line_length = linebytes;
	341
	342	info->fix.accel = FB_ACCEL_SUN_TCX;
	343	}
	344
2dc11581	345	static void tcx_unmap_regs(struct platform_device op, struct fb_info info,
c7f439b9	346	struct tcx_par *par)
1da177e4	347	{
c7f439b9	348	if (par->tec)
e3a411a3	349	of_iounmap(&op->resource[7],
c7f439b9 DM	350	par->tec, sizeof(struct tcx_tec));
c7f439b9 DM	351	if (par->thc)
e3a411a3	352	of_iounmap(&op->resource[9],
c7f439b9 DM	353	par->thc, sizeof(struct tcx_thc));
c7f439b9 DM	354	if (par->bt)
e3a411a3	355	of_iounmap(&op->resource[8],
c7f439b9 DM	356	par->bt, sizeof(struct bt_regs));
c7f439b9 DM	357	if (par->cplane)
e3a411a3	358	of_iounmap(&op->resource[4],
fe3a1aa2	359	par->cplane, info->fix.smem_len * sizeof(u32));
c7f439b9	360	if (info->screen_base)
e3a411a3	361	of_iounmap(&op->resource[0],
fe3a1aa2	362	info->screen_base, info->fix.smem_len);
50312ce9	363	}
1da177e4	364
28541d0f	365	static int __devinit tcx_probe(struct platform_device *op)
50312ce9	366	{
d4b8b2c2	367	struct device_node *dp = op->dev.of_node;
c7f439b9 DM	368	struct fb_info *info;
c7f439b9 DM	369	struct tcx_par *par;
50312ce9	370	int linebytes, i, err;
1da177e4	371
c7f439b9	372	info = framebuffer_alloc(sizeof(struct tcx_par), &op->dev);
1da177e4	373
c7f439b9 DM	374	err = -ENOMEM;
	375	if (!info)
	376	goto out_err;
	377	par = info->par;
1da177e4	378
c7f439b9 DM	379	spin_lock_init(&par->lock);
	380
	381	par->lowdepth =
50312ce9	382	(of_find_property(dp, "tcx-8-bit", NULL) != NULL);
1da177e4	383
6cd5a86b	384	sbusfb_fill_var(&info->var, dp, 8);
c7f439b9 DM	385	info->var.red.length = 8;
	386	info->var.green.length = 8;
	387	info->var.blue.length = 8;
1da177e4	388
50312ce9	389	linebytes = of_getintprop_default(dp, "linebytes",
c7f439b9	390	info->var.xres);
fe3a1aa2	391	info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
1da177e4	392
c7f439b9	393	par->tec = of_ioremap(&op->resource[7], 0,
50312ce9	394	sizeof(struct tcx_tec), "tcx tec");
c7f439b9	395	par->thc = of_ioremap(&op->resource[9], 0,
50312ce9	396	sizeof(struct tcx_thc), "tcx thc");
c7f439b9	397	par->bt = of_ioremap(&op->resource[8], 0,
50312ce9	398	sizeof(struct bt_regs), "tcx dac");
c7f439b9	399	info->screen_base = of_ioremap(&op->resource[0], 0,
fe3a1aa2	400	info->fix.smem_len, "tcx ram");
c7f439b9 DM	401	if (!par->tec \|\| !par->thc \|\|
	402	!par->bt \|\| !info->screen_base)
	403	goto out_unmap_regs;
	404
	405	memcpy(&par->mmap_map, &__tcx_mmap_map, sizeof(par->mmap_map));
	406	if (!par->lowdepth) {
	407	par->cplane = of_ioremap(&op->resource[4], 0,
fe3a1aa2	408	info->fix.smem_len * sizeof(u32),
50312ce9	409	"tcx cplane");
c7f439b9 DM	410	if (!par->cplane)
c7f439b9 DM	411	goto out_unmap_regs;
1da177e4	412	} else {
c7f439b9 DM	413	par->mmap_map[1].size = SBUS_MMAP_EMPTY;
	414	par->mmap_map[4].size = SBUS_MMAP_EMPTY;
	415	par->mmap_map[5].size = SBUS_MMAP_EMPTY;
	416	par->mmap_map[6].size = SBUS_MMAP_EMPTY;
1da177e4 LT	417	}
1da177e4 LT	418
fe3a1aa2	419	info->fix.smem_start = op->resource[0].start;
c7f439b9	420	par->which_io = op->resource[0].flags & IORESOURCE_BITS;
50312ce9	421
1da177e4 LT	422	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
	423	int j;
	424
	425	switch (i) {
	426	case 10:
	427	j = 12;
	428	break;
	429
	430	case 11: case 12:
	431	j = i - 1;
	432	break;
	433
	434	default:
	435	j = i;
	436	break;
	437	};
c7f439b9	438	par->mmap_map[i].poff = op->resource[j].start;
1da177e4 LT	439	}
1da177e4 LT	440
c7f439b9 DM	441	info->flags = FBINFO_DEFAULT;
c7f439b9 DM	442	info->fbops = &tcx_ops;
1da177e4 LT	443
1da177e4 LT	444	/* Initialize brooktree DAC. */
c7f439b9 DM	445	sbus_writel(0x04 << 24, &par->bt->addr); /* color planes */
	446	sbus_writel(0xff << 24, &par->bt->control);
	447	sbus_writel(0x05 << 24, &par->bt->addr);
	448	sbus_writel(0x00 << 24, &par->bt->control);
	449	sbus_writel(0x06 << 24, &par->bt->addr); /* overlay plane */
	450	sbus_writel(0x73 << 24, &par->bt->control);
	451	sbus_writel(0x07 << 24, &par->bt->addr);
	452	sbus_writel(0x00 << 24, &par->bt->control);
	453
	454	tcx_reset(info);
1da177e4	455
c7f439b9	456	tcx_blank(FB_BLANK_UNBLANK, info);
1da177e4	457
c7f439b9 DM	458	if (fb_alloc_cmap(&info->cmap, 256, 0))
	459	goto out_unmap_regs;
	460
	461	fb_set_cmap(&info->cmap, info);
	462	tcx_init_fix(info, linebytes);
	463
	464	err = register_framebuffer(info);
	465	if (err < 0)
	466	goto out_dealloc_cmap;
1da177e4	467
c7f439b9	468	dev_set_drvdata(&op->dev, info);
1da177e4	469
194f1a68	470	printk(KERN_INFO "%s: TCX at %lx:%lx, %s\n",
50312ce9	471	dp->full_name,
c7f439b9	472	par->which_io,
fe3a1aa2	473	info->fix.smem_start,
c7f439b9	474	par->lowdepth ? "8-bit only" : "24-bit depth");
50312ce9 DM	475
50312ce9 DM	476	return 0;
c7f439b9 DM	477
	478	out_dealloc_cmap:
	479	fb_dealloc_cmap(&info->cmap);
	480
	481	out_unmap_regs:
	482	tcx_unmap_regs(op, info, par);
6359691d	483	framebuffer_release(info);
c7f439b9 DM	484
	485	out_err:
	486	return err;
50312ce9	487	}
1da177e4	488
2dc11581	489	static int __devexit tcx_remove(struct platform_device *op)
50312ce9	490	{
c7f439b9 DM	491	struct fb_info *info = dev_get_drvdata(&op->dev);
c7f439b9 DM	492	struct tcx_par *par = info->par;
50312ce9	493
c7f439b9 DM	494	unregister_framebuffer(info);
c7f439b9 DM	495	fb_dealloc_cmap(&info->cmap);
50312ce9	496
c7f439b9	497	tcx_unmap_regs(op, info, par);
50312ce9	498
c7f439b9	499	framebuffer_release(info);
50312ce9	500
e3a411a3	501	dev_set_drvdata(&op->dev, NULL);
1da177e4 LT	502
	503	return 0;
	504	}
	505
fd098316	506	static const struct of_device_id tcx_match[] = {
50312ce9 DM	507	{
	508	.name = "SUNW,tcx",
	509	},
	510	{},
	511	};
	512	MODULE_DEVICE_TABLE(of, tcx_match);
1da177e4	513
28541d0f	514	static struct platform_driver tcx_driver = {
4018294b GL	515	.driver = {
	516	.name = "tcx",
	517	.owner = THIS_MODULE,
	518	.of_match_table = tcx_match,
	519	},
50312ce9 DM	520	.probe = tcx_probe,
	521	.remove = __devexit_p(tcx_remove),
	522	};
1da177e4	523
f36861d5	524	static int __init tcx_init(void)
50312ce9 DM	525	{
	526	if (fb_get_options("tcxfb", NULL))
	527	return -ENODEV;
	528
28541d0f	529	return platform_driver_register(&tcx_driver);
1da177e4 LT	530	}
1da177e4 LT	531
f36861d5	532	static void __exit tcx_exit(void)
1da177e4	533	{
28541d0f	534	platform_driver_unregister(&tcx_driver);
1da177e4 LT	535	}
	536
	537	module_init(tcx_init);
1da177e4	538	module_exit(tcx_exit);
1da177e4 LT	539
1da177e4 LT	540	MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
50312ce9 DM	541	MODULE_AUTHOR("David S. Miller <[email protected]>");
50312ce9 DM	542	MODULE_VERSION("2.0");
1da177e4	543	MODULE_LICENSE("GPL");