[deliverable/linux.git] / drivers / video / p9100.c

/* p9100.c: P9100 frame buffer driver
 *
 * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
 * Copyright 1999 Derrick J Brashear (shadow@dementia.org)
 *
 * 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 p9100_setcolreg(unsigned, unsigned, unsigned, unsigned,
			   unsigned, struct fb_info *);
static int p9100_blank(int, struct fb_info *);

static int p9100_mmap(struct fb_info *, struct vm_area_struct *);
static int p9100_ioctl(struct fb_info *, unsigned int, unsigned long);

/*
 *  Frame buffer operations
 */

static struct fb_ops p9100_ops = {
	.owner			= THIS_MODULE,
	.fb_setcolreg		= p9100_setcolreg,
	.fb_blank		= p9100_blank,
	.fb_fillrect		= cfb_fillrect,
	.fb_copyarea		= cfb_copyarea,
	.fb_imageblit		= cfb_imageblit,
	.fb_mmap		= p9100_mmap,
	.fb_ioctl		= p9100_ioctl,
#ifdef CONFIG_COMPAT
	.fb_compat_ioctl	= sbusfb_compat_ioctl,
#endif
};

/* P9100 control registers */
#define P9100_SYSCTL_OFF	0x0UL
#define P9100_VIDEOCTL_OFF	0x100UL
#define P9100_VRAMCTL_OFF 	0x180UL
#define P9100_RAMDAC_OFF 	0x200UL
#define P9100_VIDEOCOPROC_OFF 	0x400UL

/* P9100 command registers */
#define P9100_CMD_OFF 0x0UL

/* P9100 framebuffer memory */
#define P9100_FB_OFF 0x0UL

/* 3 bits: 2=8bpp 3=16bpp 5=32bpp 7=24bpp */
#define SYS_CONFIG_PIXELSIZE_SHIFT 26 

#define SCREENPAINT_TIMECTL1_ENABLE_VIDEO 0x20 /* 0 = off, 1 = on */

struct p9100_regs {
	/* Registers for the system control */
	u32 sys_base;
	u32 sys_config;
	u32 sys_intr;
	u32 sys_int_ena;
	u32 sys_alt_rd;
	u32 sys_alt_wr;
	u32 sys_xxx[58];

	/* Registers for the video control */
	u32 vid_base;
	u32 vid_hcnt;
	u32 vid_htotal;
	u32 vid_hsync_rise;
	u32 vid_hblank_rise;
	u32 vid_hblank_fall;
	u32 vid_hcnt_preload;
	u32 vid_vcnt;
	u32 vid_vlen;
	u32 vid_vsync_rise;
	u32 vid_vblank_rise;
	u32 vid_vblank_fall;
	u32 vid_vcnt_preload;
	u32 vid_screenpaint_addr;
	u32 vid_screenpaint_timectl1;
	u32 vid_screenpaint_qsfcnt;
	u32 vid_screenpaint_timectl2;
	u32 vid_xxx[15];

	/* Registers for the video control */
	u32 vram_base;
	u32 vram_memcfg;
	u32 vram_refresh_pd;
	u32 vram_refresh_cnt;
	u32 vram_raslo_max;
	u32 vram_raslo_cur;
	u32 pwrup_cfg;
	u32 vram_xxx[25];

	/* Registers for IBM RGB528 Palette */
	u32 ramdac_cmap_wridx; 
	u32 ramdac_palette_data;
	u32 ramdac_pixel_mask;
	u32 ramdac_palette_rdaddr;
	u32 ramdac_idx_lo;
	u32 ramdac_idx_hi;
	u32 ramdac_idx_data;
	u32 ramdac_idx_ctl;
	u32 ramdac_xxx[1784];
};

struct p9100_cmd_parameng {
	u32 parameng_status;
	u32 parameng_bltcmd;
	u32 parameng_quadcmd;
};

struct p9100_par {
	spinlock_t		lock;
	struct p9100_regs	__iomem *regs;

	u32			flags;
#define P9100_FLAG_BLANKED	0x00000001

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

/**
 *      p9100_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 p9100_setcolreg(unsigned regno,
			   unsigned red, unsigned green, unsigned blue,
			   unsigned transp, struct fb_info *info)
{
	struct p9100_par *par = (struct p9100_par *) info->par;
	struct p9100_regs __iomem *regs = par->regs;
	unsigned long flags;

	if (regno >= 256)
		return 1;

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

	spin_lock_irqsave(&par->lock, flags);

	sbus_writel((regno << 16), &regs->ramdac_cmap_wridx);
	sbus_writel((red << 16), &regs->ramdac_palette_data);
	sbus_writel((green << 16), &regs->ramdac_palette_data);
	sbus_writel((blue << 16), &regs->ramdac_palette_data);

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

/**
 *      p9100_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
p9100_blank(int blank, struct fb_info *info)
{
	struct p9100_par *par = (struct p9100_par *) info->par;
	struct p9100_regs __iomem *regs = par->regs;
	unsigned long flags;
	u32 val;

	spin_lock_irqsave(&par->lock, flags);

	switch (blank) {
	case FB_BLANK_UNBLANK: /* Unblanking */
		val = sbus_readl(&regs->vid_screenpaint_timectl1);
		val |= SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
		sbus_writel(val, &regs->vid_screenpaint_timectl1);
		par->flags &= ~P9100_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(&regs->vid_screenpaint_timectl1);
		val &= ~SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
		sbus_writel(val, &regs->vid_screenpaint_timectl1);
		par->flags |= P9100_FLAG_BLANKED;
		break;
	}

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

static struct sbus_mmap_map p9100_mmap_map[] = {
	{ CG3_MMAP_OFFSET,	0,		SBUS_MMAP_FBSIZE(1) },
	{ 0,			0,		0		    }
};

static int p9100_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
	struct p9100_par *par = (struct p9100_par *)info->par;

	return sbusfb_mmap_helper(p9100_mmap_map,
				  par->physbase, par->fbsize,
				  par->which_io, vma);
}

static int p9100_ioctl(struct fb_info *info, unsigned int cmd,
		       unsigned long arg)
{
	struct p9100_par *par = (struct p9100_par *) info->par;

	/* Make it look like a cg3. */
	return sbusfb_ioctl_helper(cmd, arg, info,
				   FBTYPE_SUN3COLOR, 8, par->fbsize);
}

/*
 *  Initialisation
 */

static void p9100_init_fix(struct fb_info *info, int linebytes, 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_PSEUDOCOLOR;

	info->fix.line_length = linebytes;

	info->fix.accel = FB_ACCEL_SUN_CGTHREE;
}

static int __devinit p9100_probe(struct of_device *op, const struct of_device_id *match)
{
	struct device_node *dp = op->node;
	struct fb_info *info;
	struct p9100_par *par;
	int linebytes, err;

	info = framebuffer_alloc(sizeof(struct p9100_par), &op->dev);

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

	spin_lock_init(&par->lock);

	/* This is the framebuffer and the only resource apps can mmap.  */
	par->physbase = op->resource[2].start;
	par->which_io = op->resource[2].flags & IORESOURCE_BITS;

	sbusfb_fill_var(&info->var, dp->node, 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->regs = of_ioremap(&op->resource[0], 0,
			       sizeof(struct p9100_regs), "p9100 regs");
	if (!par->regs)
		goto out_release_fb;

	info->flags = FBINFO_DEFAULT;
	info->fbops = &p9100_ops;
	info->screen_base = of_ioremap(&op->resource[2], 0,
				       par->fbsize, "p9100 ram");
	if (!info->screen_base)
		goto out_unmap_regs;

	p9100_blank(0, info);

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

	p9100_init_fix(info, linebytes, dp);

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

	fb_set_cmap(&info->cmap, info);

	dev_set_drvdata(&op->dev, info);

	printk("%s: p9100 at %lx:%lx\n",
	       dp->full_name,
	       par->which_io, par->physbase);

	return 0;

out_dealloc_cmap:
	fb_dealloc_cmap(&info->cmap);

out_unmap_screen:
	of_iounmap(&op->resource[2], info->screen_base, par->fbsize);

out_unmap_regs:
	of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));

out_release_fb:
	framebuffer_release(info);

out_err:
	return err;
}

static int __devexit p9100_remove(struct of_device *op)
{
	struct fb_info *info = dev_get_drvdata(&op->dev);
	struct p9100_par *par = info->par;

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

	of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
	of_iounmap(&op->resource[2], info->screen_base, par->fbsize);

	framebuffer_release(info);

	dev_set_drvdata(&op->dev, NULL);

	return 0;
}

static struct of_device_id p9100_match[] = {
	{
		.name = "p9100",
	},
	{},
};
MODULE_DEVICE_TABLE(of, p9100_match);

static struct of_platform_driver p9100_driver = {
	.name		= "p9100",
	.match_table	= p9100_match,
	.probe		= p9100_probe,
	.remove		= __devexit_p(p9100_remove),
};

static int __init p9100_init(void)
{
	if (fb_get_options("p9100fb", NULL))
		return -ENODEV;

	return of_register_driver(&p9100_driver, &of_bus_type);
}

static void __exit p9100_exit(void)
{
	of_unregister_driver(&p9100_driver);
}

module_init(p9100_init);
module_exit(p9100_exit);

MODULE_DESCRIPTION("framebuffer driver for P9100 chipsets");
MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/* p9100.c: P9100 frame buffer driver
1da177e4 LT	2	*
50312ce9	3	* Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
1da177e4 LT	4	* Copyright 1999 Derrick J Brashear (shadow@dementia.org)
	5	*
	6	* Driver layout based loosely on tgafb.c, see that file for credits.
	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/kernel.h>
	11	#include <linux/errno.h>
	12	#include <linux/string.h>
	13	#include <linux/slab.h>
	14	#include <linux/delay.h>
	15	#include <linux/init.h>
	16	#include <linux/fb.h>
	17	#include <linux/mm.h>
	18
	19	#include <asm/io.h>
50312ce9 DM	20	#include <asm/prom.h>
50312ce9 DM	21	#include <asm/of_device.h>
1da177e4 LT	22	#include <asm/fbio.h>
	23
	24	#include "sbuslib.h"
	25
	26	/*
	27	* Local functions.
	28	*/
	29
	30	static int p9100_setcolreg(unsigned, unsigned, unsigned, unsigned,
	31	unsigned, struct fb_info *);
	32	static int p9100_blank(int, struct fb_info *);
	33
216d526c	34	static int p9100_mmap(struct fb_info , struct vm_area_struct );
67a6680d	35	static int p9100_ioctl(struct fb_info *, unsigned int, unsigned long);
1da177e4 LT	36
	37	/*
	38	* Frame buffer operations
	39	*/
	40
	41	static struct fb_ops p9100_ops = {
	42	.owner = THIS_MODULE,
	43	.fb_setcolreg = p9100_setcolreg,
	44	.fb_blank = p9100_blank,
	45	.fb_fillrect = cfb_fillrect,
	46	.fb_copyarea = cfb_copyarea,
	47	.fb_imageblit = cfb_imageblit,
	48	.fb_mmap = p9100_mmap,
	49	.fb_ioctl = p9100_ioctl,
9ffb83bc CH	50	#ifdef CONFIG_COMPAT
	51	.fb_compat_ioctl = sbusfb_compat_ioctl,
	52	#endif
1da177e4 LT	53	};
	54
	55	/* P9100 control registers */
	56	#define P9100_SYSCTL_OFF 0x0UL
	57	#define P9100_VIDEOCTL_OFF 0x100UL
	58	#define P9100_VRAMCTL_OFF 0x180UL
	59	#define P9100_RAMDAC_OFF 0x200UL
	60	#define P9100_VIDEOCOPROC_OFF 0x400UL
	61
	62	/* P9100 command registers */
	63	#define P9100_CMD_OFF 0x0UL
	64
	65	/* P9100 framebuffer memory */
	66	#define P9100_FB_OFF 0x0UL
	67
	68	/* 3 bits: 2=8bpp 3=16bpp 5=32bpp 7=24bpp */
	69	#define SYS_CONFIG_PIXELSIZE_SHIFT 26
	70
	71	#define SCREENPAINT_TIMECTL1_ENABLE_VIDEO 0x20 /* 0 = off, 1 = on */
	72
	73	struct p9100_regs {
	74	/* Registers for the system control */
50312ce9 DM	75	u32 sys_base;
	76	u32 sys_config;
	77	u32 sys_intr;
	78	u32 sys_int_ena;
	79	u32 sys_alt_rd;
	80	u32 sys_alt_wr;
	81	u32 sys_xxx[58];
1da177e4 LT	82
1da177e4 LT	83	/* Registers for the video control */
50312ce9 DM	84	u32 vid_base;
	85	u32 vid_hcnt;
	86	u32 vid_htotal;
	87	u32 vid_hsync_rise;
	88	u32 vid_hblank_rise;
	89	u32 vid_hblank_fall;
	90	u32 vid_hcnt_preload;
	91	u32 vid_vcnt;
	92	u32 vid_vlen;
	93	u32 vid_vsync_rise;
	94	u32 vid_vblank_rise;
	95	u32 vid_vblank_fall;
	96	u32 vid_vcnt_preload;
	97	u32 vid_screenpaint_addr;
	98	u32 vid_screenpaint_timectl1;
	99	u32 vid_screenpaint_qsfcnt;
	100	u32 vid_screenpaint_timectl2;
	101	u32 vid_xxx[15];
1da177e4 LT	102
1da177e4 LT	103	/* Registers for the video control */
50312ce9 DM	104	u32 vram_base;
	105	u32 vram_memcfg;
	106	u32 vram_refresh_pd;
	107	u32 vram_refresh_cnt;
	108	u32 vram_raslo_max;
	109	u32 vram_raslo_cur;
	110	u32 pwrup_cfg;
	111	u32 vram_xxx[25];
1da177e4 LT	112
1da177e4 LT	113	/* Registers for IBM RGB528 Palette */
50312ce9 DM	114	u32 ramdac_cmap_wridx;
	115	u32 ramdac_palette_data;
	116	u32 ramdac_pixel_mask;
	117	u32 ramdac_palette_rdaddr;
	118	u32 ramdac_idx_lo;
	119	u32 ramdac_idx_hi;
	120	u32 ramdac_idx_data;
	121	u32 ramdac_idx_ctl;
	122	u32 ramdac_xxx[1784];
1da177e4 LT	123	};
	124
	125	struct p9100_cmd_parameng {
50312ce9 DM	126	u32 parameng_status;
	127	u32 parameng_bltcmd;
	128	u32 parameng_quadcmd;
1da177e4 LT	129	};
	130
	131	struct p9100_par {
	132	spinlock_t lock;
	133	struct p9100_regs __iomem *regs;
	134
	135	u32 flags;
	136	#define P9100_FLAG_BLANKED 0x00000001
	137
	138	unsigned long physbase;
50312ce9	139	unsigned long which_io;
1da177e4	140	unsigned long fbsize;
1da177e4 LT	141	};
	142
	143	/**
	144	* p9100_setcolreg - Optional function. Sets a color register.
	145	* @regno: boolean, 0 copy local, 1 get_user() function
	146	* @red: frame buffer colormap structure
	147	* @green: The green value which can be up to 16 bits wide
	148	* @blue: The blue value which can be up to 16 bits wide.
	149	* @transp: If supported the alpha value which can be up to 16 bits wide.
	150	* @info: frame buffer info structure
	151	*/
	152	static int p9100_setcolreg(unsigned regno,
	153	unsigned red, unsigned green, unsigned blue,
	154	unsigned transp, struct fb_info *info)
	155	{
	156	struct p9100_par par = (struct p9100_par ) info->par;
	157	struct p9100_regs __iomem *regs = par->regs;
	158	unsigned long flags;
	159
	160	if (regno >= 256)
	161	return 1;
	162
	163	red >>= 8;
	164	green >>= 8;
	165	blue >>= 8;
	166
	167	spin_lock_irqsave(&par->lock, flags);
	168
	169	sbus_writel((regno << 16), &regs->ramdac_cmap_wridx);
	170	sbus_writel((red << 16), &regs->ramdac_palette_data);
	171	sbus_writel((green << 16), &regs->ramdac_palette_data);
	172	sbus_writel((blue << 16), &regs->ramdac_palette_data);
	173
	174	spin_unlock_irqrestore(&par->lock, flags);
	175
	176	return 0;
	177	}
	178
	179	/**
	180	* p9100_blank - Optional function. Blanks the display.
	181	* @blank_mode: the blank mode we want.
	182	* @info: frame buffer structure that represents a single frame buffer
	183	*/
	184	static int
	185	p9100_blank(int blank, struct fb_info *info)
	186	{
	187	struct p9100_par par = (struct p9100_par ) info->par;
	188	struct p9100_regs __iomem *regs = par->regs;
	189	unsigned long flags;
	190	u32 val;
	191
	192	spin_lock_irqsave(&par->lock, flags);
	193
	194	switch (blank) {
	195	case FB_BLANK_UNBLANK: /* Unblanking */
	196	val = sbus_readl(&regs->vid_screenpaint_timectl1);
	197	val \|= SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
	198	sbus_writel(val, &regs->vid_screenpaint_timectl1);
	199	par->flags &= ~P9100_FLAG_BLANKED;
	200	break;
	201
	202	case FB_BLANK_NORMAL: /* Normal blanking */
	203	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
	204	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
205	case FB_BLANK_POWERDOWN: /* Poweroff */
206	val = sbus_readl(&regs->vid_screenpaint_timectl1);
207	val &= ~SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
208	sbus_writel(val, &regs->vid_screenpaint_timectl1);
209	par->flags \|= P9100_FLAG_BLANKED;
210	break;
211	}
212
213	spin_unlock_irqrestore(&par->lock, flags);
214
215	return 0;
216	}
217
218	static struct sbus_mmap_map p9100_mmap_map[] = {
219	{ CG3_MMAP_OFFSET, 0, SBUS_MMAP_FBSIZE(1) },
220	{ 0, 0, 0 }
221	};
222
216d526c	223	static int p9100_mmap(struct fb_info info, struct vm_area_struct vma)
1da177e4 LT	224	{
	225	struct p9100_par par = (struct p9100_par )info->par;
	226
	227	return sbusfb_mmap_helper(p9100_mmap_map,
	228	par->physbase, par->fbsize,
50312ce9	229	par->which_io, vma);
1da177e4 LT	230	}
1da177e4 LT	231
67a6680d CH	232	static int p9100_ioctl(struct fb_info *info, unsigned int cmd,
67a6680d CH	233	unsigned long arg)
1da177e4 LT	234	{
	235	struct p9100_par par = (struct p9100_par ) info->par;
	236
	237	/* Make it look like a cg3. */
	238	return sbusfb_ioctl_helper(cmd, arg, info,
	239	FBTYPE_SUN3COLOR, 8, par->fbsize);
	240	}
	241
	242	/*
	243	* Initialisation
	244	*/
	245
50312ce9	246	static void p9100_init_fix(struct fb_info info, int linebytes, struct device_node dp)
1da177e4	247	{
50312ce9	248	strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
1da177e4 LT	249
	250	info->fix.type = FB_TYPE_PACKED_PIXELS;
	251	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
	252
	253	info->fix.line_length = linebytes;
	254
	255	info->fix.accel = FB_ACCEL_SUN_CGTHREE;
	256	}
	257
c7f439b9	258	static int __devinit p9100_probe(struct of_device op, const struct of_device_id match)
1da177e4	259	{
50312ce9	260	struct device_node *dp = op->node;
c7f439b9 DM	261	struct fb_info *info;
c7f439b9 DM	262	struct p9100_par *par;
50312ce9	263	int linebytes, err;
1da177e4	264
c7f439b9 DM	265	info = framebuffer_alloc(sizeof(struct p9100_par), &op->dev);
	266
	267	err = -ENOMEM;
	268	if (!info)
	269	goto out_err;
	270	par = info->par;
1da177e4	271
c7f439b9	272	spin_lock_init(&par->lock);
1da177e4 LT	273
1da177e4 LT	274	/* This is the framebuffer and the only resource apps can mmap. */
c7f439b9 DM	275	par->physbase = op->resource[2].start;
c7f439b9 DM	276	par->which_io = op->resource[2].flags & IORESOURCE_BITS;
1da177e4	277
c7f439b9 DM	278	sbusfb_fill_var(&info->var, dp->node, 8);
	279	info->var.red.length = 8;
	280	info->var.green.length = 8;
	281	info->var.blue.length = 8;
1da177e4	282
c7f439b9 DM	283	linebytes = of_getintprop_default(dp, "linebytes", info->var.xres);
c7f439b9 DM	284	par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);
1da177e4	285
c7f439b9 DM	286	par->regs = of_ioremap(&op->resource[0], 0,
	287	sizeof(struct p9100_regs), "p9100 regs");
	288	if (!par->regs)
	289	goto out_release_fb;
1da177e4	290
c7f439b9 DM	291	info->flags = FBINFO_DEFAULT;
	292	info->fbops = &p9100_ops;
	293	info->screen_base = of_ioremap(&op->resource[2], 0,
	294	par->fbsize, "p9100 ram");
	295	if (!info->screen_base)
	296	goto out_unmap_regs;
	297
	298	p9100_blank(0, info);
	299
	300	if (fb_alloc_cmap(&info->cmap, 256, 0))
	301	goto out_unmap_screen;
1da177e4	302
c7f439b9 DM	303	p9100_init_fix(info, linebytes, dp);
	304
	305	err = register_framebuffer(info);
	306	if (err < 0)
	307	goto out_dealloc_cmap;
	308
	309	fb_set_cmap(&info->cmap, info);
	310
	311	dev_set_drvdata(&op->dev, info);
50312ce9 DM	312
	313	printk("%s: p9100 at %lx:%lx\n",
	314	dp->full_name,
c7f439b9	315	par->which_io, par->physbase);
1da177e4	316
50312ce9	317	return 0;
1da177e4	318
c7f439b9 DM	319	out_dealloc_cmap:
	320	fb_dealloc_cmap(&info->cmap);
	321
	322	out_unmap_screen:
	323	of_iounmap(&op->resource[2], info->screen_base, par->fbsize);
	324
	325	out_unmap_regs:
	326	of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
	327
	328	out_release_fb:
	329	framebuffer_release(info);
1da177e4	330
c7f439b9 DM	331	out_err:
c7f439b9 DM	332	return err;
50312ce9	333	}
1da177e4	334
e3a411a3	335	static int __devexit p9100_remove(struct of_device *op)
50312ce9	336	{
c7f439b9 DM	337	struct fb_info *info = dev_get_drvdata(&op->dev);
c7f439b9 DM	338	struct p9100_par *par = info->par;
50312ce9	339
c7f439b9 DM	340	unregister_framebuffer(info);
c7f439b9 DM	341	fb_dealloc_cmap(&info->cmap);
50312ce9	342
c7f439b9 DM	343	of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
c7f439b9 DM	344	of_iounmap(&op->resource[2], info->screen_base, par->fbsize);
50312ce9	345
c7f439b9	346	framebuffer_release(info);
50312ce9	347
e3a411a3	348	dev_set_drvdata(&op->dev, NULL);
1da177e4 LT	349
	350	return 0;
	351	}
	352
50312ce9 DM	353	static struct of_device_id p9100_match[] = {
	354	{
	355	.name = "p9100",
	356	},
	357	{},
	358	};
	359	MODULE_DEVICE_TABLE(of, p9100_match);
1da177e4	360
50312ce9 DM	361	static struct of_platform_driver p9100_driver = {
	362	.name = "p9100",
	363	.match_table = p9100_match,
	364	.probe = p9100_probe,
	365	.remove = __devexit_p(p9100_remove),
	366	};
1da177e4	367
50312ce9 DM	368	static int __init p9100_init(void)
	369	{
	370	if (fb_get_options("p9100fb", NULL))
	371	return -ENODEV;
	372
	373	return of_register_driver(&p9100_driver, &of_bus_type);
1da177e4 LT	374	}
1da177e4 LT	375
50312ce9	376	static void __exit p9100_exit(void)
1da177e4	377	{
50312ce9	378	of_unregister_driver(&p9100_driver);
1da177e4 LT	379	}
	380
	381	module_init(p9100_init);
1da177e4	382	module_exit(p9100_exit);
1da177e4 LT	383
1da177e4 LT	384	MODULE_DESCRIPTION("framebuffer driver for P9100 chipsets");
50312ce9 DM	385	MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
50312ce9 DM	386	MODULE_VERSION("2.0");
1da177e4	387	MODULE_LICENSE("GPL");