[thirdparty/linux.git] / drivers / video / fbdev / p9100.c

// SPDX-License-Identifier: GPL-2.0-only
/* 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/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 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		which_io;
};

/**
 *      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,
				  info->fix.smem_start, info->fix.smem_len,
				  par->which_io, vma);
}

static int p9100_ioctl(struct fb_info *info, unsigned int cmd,
		       unsigned long arg)
{
	/* Make it look like a cg3. */
	return sbusfb_ioctl_helper(cmd, arg, info,
				   FBTYPE_SUN3COLOR, 8, info->fix.smem_len);
}

/*
 *  Initialisation
 */

static void p9100_init_fix(struct fb_info *info, int linebytes, struct device_node *dp)
{
	snprintf(info->fix.id, sizeof(info->fix.id), "%pOFn", dp);

	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 p9100_probe(struct platform_device *op)
{
	struct device_node *dp = op->dev.of_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.  */
	info->fix.smem_start = op->resource[2].start;
	par->which_io = op->resource[2].flags & IORESOURCE_BITS;

	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->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,
				       info->fix.smem_len, "p9100 ram");
	if (!info->screen_base)
		goto out_unmap_regs;

	p9100_blank(FB_BLANK_UNBLANK, 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(KERN_INFO "%pOF: p9100 at %lx:%lx\n",
	       dp,
	       par->which_io, info->fix.smem_start);

	return 0;

out_dealloc_cmap:
	fb_dealloc_cmap(&info->cmap);

out_unmap_screen:
	of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);

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 p9100_remove(struct platform_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, info->fix.smem_len);

	framebuffer_release(info);

	return 0;
}

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

static struct platform_driver p9100_driver = {
	.driver = {
		.name = "p9100",
		.of_match_table = p9100_match,
	},
	.probe		= p9100_probe,
	.remove		= p9100_remove,
};

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

	return platform_driver_register(&p9100_driver);
}

static void __exit p9100_exit(void)
{
	platform_driver_unregister(&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
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
1da177e4 LT	2	/* p9100.c: P9100 frame buffer driver
1da177e4 LT	3	*
50312ce9	4	* Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
1da177e4 LT	5	* Copyright 1999 Derrick J Brashear (shadow@dementia.org)
	6	*
	7	* Driver layout based loosely on tgafb.c, see that file for credits.
	8	*/
	9
	10	#include <linux/module.h>
	11	#include <linux/kernel.h>
	12	#include <linux/errno.h>
	13	#include <linux/string.h>
1da177e4 LT	14	#include <linux/delay.h>
	15	#include <linux/init.h>
	16	#include <linux/fb.h>
	17	#include <linux/mm.h>
6cd5a86b	18	#include <linux/of_device.h>
1da177e4 LT	19
1da177e4 LT	20	#include <asm/io.h>
1da177e4 LT	21	#include <asm/fbio.h>
	22
	23	#include "sbuslib.h"
	24
	25	/*
	26	* Local functions.
	27	*/
	28
	29	static int p9100_setcolreg(unsigned, unsigned, unsigned, unsigned,
	30	unsigned, struct fb_info *);
	31	static int p9100_blank(int, struct fb_info *);
	32
216d526c	33	static int p9100_mmap(struct fb_info , struct vm_area_struct );
67a6680d	34	static int p9100_ioctl(struct fb_info *, unsigned int, unsigned long);
1da177e4 LT	35
	36	/*
	37	* Frame buffer operations
	38	*/
	39
	40	static struct fb_ops p9100_ops = {
	41	.owner = THIS_MODULE,
	42	.fb_setcolreg = p9100_setcolreg,
	43	.fb_blank = p9100_blank,
	44	.fb_fillrect = cfb_fillrect,
	45	.fb_copyarea = cfb_copyarea,
	46	.fb_imageblit = cfb_imageblit,
	47	.fb_mmap = p9100_mmap,
	48	.fb_ioctl = p9100_ioctl,
9ffb83bc CH	49	#ifdef CONFIG_COMPAT
	50	.fb_compat_ioctl = sbusfb_compat_ioctl,
	51	#endif
1da177e4 LT	52	};
	53
	54	/* P9100 control registers */
	55	#define P9100_SYSCTL_OFF 0x0UL
	56	#define P9100_VIDEOCTL_OFF 0x100UL
	57	#define P9100_VRAMCTL_OFF 0x180UL
	58	#define P9100_RAMDAC_OFF 0x200UL
	59	#define P9100_VIDEOCOPROC_OFF 0x400UL
	60
	61	/* P9100 command registers */
	62	#define P9100_CMD_OFF 0x0UL
	63
	64	/* P9100 framebuffer memory */
	65	#define P9100_FB_OFF 0x0UL
	66
	67	/* 3 bits: 2=8bpp 3=16bpp 5=32bpp 7=24bpp */
	68	#define SYS_CONFIG_PIXELSIZE_SHIFT 26
	69
	70	#define SCREENPAINT_TIMECTL1_ENABLE_VIDEO 0x20 /* 0 = off, 1 = on */
	71
	72	struct p9100_regs {
	73	/* Registers for the system control */
50312ce9 DM	74	u32 sys_base;
	75	u32 sys_config;
	76	u32 sys_intr;
	77	u32 sys_int_ena;
	78	u32 sys_alt_rd;
	79	u32 sys_alt_wr;
	80	u32 sys_xxx[58];
1da177e4 LT	81
1da177e4 LT	82	/* Registers for the video control */
50312ce9 DM	83	u32 vid_base;
	84	u32 vid_hcnt;
	85	u32 vid_htotal;
	86	u32 vid_hsync_rise;
	87	u32 vid_hblank_rise;
	88	u32 vid_hblank_fall;
	89	u32 vid_hcnt_preload;
	90	u32 vid_vcnt;
	91	u32 vid_vlen;
	92	u32 vid_vsync_rise;
	93	u32 vid_vblank_rise;
	94	u32 vid_vblank_fall;
	95	u32 vid_vcnt_preload;
	96	u32 vid_screenpaint_addr;
	97	u32 vid_screenpaint_timectl1;
	98	u32 vid_screenpaint_qsfcnt;
	99	u32 vid_screenpaint_timectl2;
	100	u32 vid_xxx[15];
1da177e4 LT	101
1da177e4 LT	102	/* Registers for the video control */
50312ce9 DM	103	u32 vram_base;
	104	u32 vram_memcfg;
	105	u32 vram_refresh_pd;
	106	u32 vram_refresh_cnt;
	107	u32 vram_raslo_max;
	108	u32 vram_raslo_cur;
	109	u32 pwrup_cfg;
	110	u32 vram_xxx[25];
1da177e4 LT	111
1da177e4 LT	112	/* Registers for IBM RGB528 Palette */
50312ce9 DM	113	u32 ramdac_cmap_wridx;
	114	u32 ramdac_palette_data;
	115	u32 ramdac_pixel_mask;
	116	u32 ramdac_palette_rdaddr;
	117	u32 ramdac_idx_lo;
	118	u32 ramdac_idx_hi;
	119	u32 ramdac_idx_data;
	120	u32 ramdac_idx_ctl;
	121	u32 ramdac_xxx[1784];
1da177e4 LT	122	};
	123
	124	struct p9100_cmd_parameng {
50312ce9 DM	125	u32 parameng_status;
	126	u32 parameng_bltcmd;
	127	u32 parameng_quadcmd;
1da177e4 LT	128	};
	129
	130	struct p9100_par {
	131	spinlock_t lock;
	132	struct p9100_regs __iomem *regs;
	133
	134	u32 flags;
	135	#define P9100_FLAG_BLANKED 0x00000001
	136
50312ce9	137	unsigned long which_io;
1da177e4 LT	138	};
	139
	140	/**
	141	* p9100_setcolreg - Optional function. Sets a color register.
	142	* @regno: boolean, 0 copy local, 1 get_user() function
	143	* @red: frame buffer colormap structure
	144	* @green: The green value which can be up to 16 bits wide
	145	* @blue: The blue value which can be up to 16 bits wide.
	146	* @transp: If supported the alpha value which can be up to 16 bits wide.
	147	* @info: frame buffer info structure
	148	*/
	149	static int p9100_setcolreg(unsigned regno,
	150	unsigned red, unsigned green, unsigned blue,
	151	unsigned transp, struct fb_info *info)
	152	{
	153	struct p9100_par par = (struct p9100_par ) info->par;
	154	struct p9100_regs __iomem *regs = par->regs;
	155	unsigned long flags;
	156
	157	if (regno >= 256)
	158	return 1;
	159
	160	red >>= 8;
	161	green >>= 8;
	162	blue >>= 8;
	163
	164	spin_lock_irqsave(&par->lock, flags);
	165
	166	sbus_writel((regno << 16), &regs->ramdac_cmap_wridx);
	167	sbus_writel((red << 16), &regs->ramdac_palette_data);
	168	sbus_writel((green << 16), &regs->ramdac_palette_data);
	169	sbus_writel((blue << 16), &regs->ramdac_palette_data);
	170
	171	spin_unlock_irqrestore(&par->lock, flags);
	172
	173	return 0;
	174	}
	175
	176	/**
	177	* p9100_blank - Optional function. Blanks the display.
	178	* @blank_mode: the blank mode we want.
	179	* @info: frame buffer structure that represents a single frame buffer
	180	*/
	181	static int
	182	p9100_blank(int blank, struct fb_info *info)
	183	{
	184	struct p9100_par par = (struct p9100_par ) info->par;
	185	struct p9100_regs __iomem *regs = par->regs;
	186	unsigned long flags;
	187	u32 val;
	188
	189	spin_lock_irqsave(&par->lock, flags);
	190
	191	switch (blank) {
	192	case FB_BLANK_UNBLANK: /* Unblanking */
	193	val = sbus_readl(&regs->vid_screenpaint_timectl1);
	194	val \|= SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
	195	sbus_writel(val, &regs->vid_screenpaint_timectl1);
	196	par->flags &= ~P9100_FLAG_BLANKED;
	197	break;
	198
	199	case FB_BLANK_NORMAL: /* Normal blanking */
	200	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
	201	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
202	case FB_BLANK_POWERDOWN: /* Poweroff */
203	val = sbus_readl(&regs->vid_screenpaint_timectl1);
204	val &= ~SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
205	sbus_writel(val, &regs->vid_screenpaint_timectl1);
206	par->flags \|= P9100_FLAG_BLANKED;
207	break;
208	}
209
210	spin_unlock_irqrestore(&par->lock, flags);
211
212	return 0;
213	}
214
215	static struct sbus_mmap_map p9100_mmap_map[] = {
216	{ CG3_MMAP_OFFSET, 0, SBUS_MMAP_FBSIZE(1) },
217	{ 0, 0, 0 }
218	};
219
216d526c	220	static int p9100_mmap(struct fb_info info, struct vm_area_struct vma)
1da177e4 LT	221	{
	222	struct p9100_par par = (struct p9100_par )info->par;
	223
	224	return sbusfb_mmap_helper(p9100_mmap_map,
0d76cb26	225	info->fix.smem_start, info->fix.smem_len,
50312ce9	226	par->which_io, vma);
1da177e4 LT	227	}
1da177e4 LT	228
67a6680d CH	229	static int p9100_ioctl(struct fb_info *info, unsigned int cmd,
67a6680d CH	230	unsigned long arg)
1da177e4	231	{
1da177e4 LT	232	/* Make it look like a cg3. */
1da177e4 LT	233	return sbusfb_ioctl_helper(cmd, arg, info,
0d76cb26	234	FBTYPE_SUN3COLOR, 8, info->fix.smem_len);
1da177e4 LT	235	}
	236
	237	/*
	238	* Initialisation
	239	*/
	240
50312ce9	241	static void p9100_init_fix(struct fb_info info, int linebytes, struct device_node dp)
1da177e4	242	{
5c63e407	243	snprintf(info->fix.id, sizeof(info->fix.id), "%pOFn", dp);
1da177e4 LT	244
	245	info->fix.type = FB_TYPE_PACKED_PIXELS;
	246	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
	247
	248	info->fix.line_length = linebytes;
	249
	250	info->fix.accel = FB_ACCEL_SUN_CGTHREE;
	251	}
	252
48c68c4f	253	static int p9100_probe(struct platform_device *op)
1da177e4	254	{
d4b8b2c2	255	struct device_node *dp = op->dev.of_node;
c7f439b9 DM	256	struct fb_info *info;
c7f439b9 DM	257	struct p9100_par *par;
50312ce9	258	int linebytes, err;
1da177e4	259
c7f439b9 DM	260	info = framebuffer_alloc(sizeof(struct p9100_par), &op->dev);
	261
	262	err = -ENOMEM;
	263	if (!info)
	264	goto out_err;
	265	par = info->par;
1da177e4	266
c7f439b9	267	spin_lock_init(&par->lock);
1da177e4 LT	268
1da177e4 LT	269	/* This is the framebuffer and the only resource apps can mmap. */
0d76cb26	270	info->fix.smem_start = op->resource[2].start;
c7f439b9	271	par->which_io = op->resource[2].flags & IORESOURCE_BITS;
1da177e4	272
6cd5a86b	273	sbusfb_fill_var(&info->var, dp, 8);
c7f439b9 DM	274	info->var.red.length = 8;
	275	info->var.green.length = 8;
	276	info->var.blue.length = 8;
1da177e4	277
c7f439b9	278	linebytes = of_getintprop_default(dp, "linebytes", info->var.xres);
0d76cb26	279	info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
1da177e4	280
c7f439b9 DM	281	par->regs = of_ioremap(&op->resource[0], 0,
	282	sizeof(struct p9100_regs), "p9100 regs");
	283	if (!par->regs)
	284	goto out_release_fb;
1da177e4	285
c7f439b9 DM	286	info->flags = FBINFO_DEFAULT;
	287	info->fbops = &p9100_ops;
	288	info->screen_base = of_ioremap(&op->resource[2], 0,
0d76cb26	289	info->fix.smem_len, "p9100 ram");
c7f439b9 DM	290	if (!info->screen_base)
	291	goto out_unmap_regs;
	292
59f7137a	293	p9100_blank(FB_BLANK_UNBLANK, info);
c7f439b9 DM	294
	295	if (fb_alloc_cmap(&info->cmap, 256, 0))
	296	goto out_unmap_screen;
1da177e4	297
c7f439b9 DM	298	p9100_init_fix(info, linebytes, dp);
	299
	300	err = register_framebuffer(info);
	301	if (err < 0)
	302	goto out_dealloc_cmap;
	303
	304	fb_set_cmap(&info->cmap, info);
	305
	306	dev_set_drvdata(&op->dev, info);
50312ce9	307
6d7e6533 RH	308	printk(KERN_INFO "%pOF: p9100 at %lx:%lx\n",
6d7e6533 RH	309	dp,
0d76cb26	310	par->which_io, info->fix.smem_start);
1da177e4	311
50312ce9	312	return 0;
1da177e4	313
c7f439b9 DM	314	out_dealloc_cmap:
	315	fb_dealloc_cmap(&info->cmap);
	316
	317	out_unmap_screen:
0d76cb26	318	of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
c7f439b9 DM	319
	320	out_unmap_regs:
	321	of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
	322
	323	out_release_fb:
	324	framebuffer_release(info);
1da177e4	325
c7f439b9 DM	326	out_err:
c7f439b9 DM	327	return err;
50312ce9	328	}
1da177e4	329
48c68c4f	330	static int p9100_remove(struct platform_device *op)
50312ce9	331	{
c7f439b9 DM	332	struct fb_info *info = dev_get_drvdata(&op->dev);
c7f439b9 DM	333	struct p9100_par *par = info->par;
50312ce9	334
c7f439b9 DM	335	unregister_framebuffer(info);
c7f439b9 DM	336	fb_dealloc_cmap(&info->cmap);
50312ce9	337
c7f439b9	338	of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
0d76cb26	339	of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
50312ce9	340
c7f439b9	341	framebuffer_release(info);
50312ce9	342
1da177e4 LT	343	return 0;
	344	}
	345
fd098316	346	static const struct of_device_id p9100_match[] = {
50312ce9 DM	347	{
	348	.name = "p9100",
	349	},
	350	{},
	351	};
	352	MODULE_DEVICE_TABLE(of, p9100_match);
1da177e4	353
28541d0f	354	static struct platform_driver p9100_driver = {
4018294b GL	355	.driver = {
4018294b GL	356	.name = "p9100",
4018294b GL	357	.of_match_table = p9100_match,
4018294b GL	358	},
50312ce9	359	.probe = p9100_probe,
48c68c4f	360	.remove = p9100_remove,
50312ce9	361	};
1da177e4	362
50312ce9 DM	363	static int __init p9100_init(void)
	364	{
	365	if (fb_get_options("p9100fb", NULL))
	366	return -ENODEV;
	367
28541d0f	368	return platform_driver_register(&p9100_driver);
1da177e4 LT	369	}
1da177e4 LT	370
50312ce9	371	static void __exit p9100_exit(void)
1da177e4	372	{
28541d0f	373	platform_driver_unregister(&p9100_driver);
1da177e4 LT	374	}
	375
	376	module_init(p9100_init);
1da177e4	377	module_exit(p9100_exit);
1da177e4 LT	378
1da177e4 LT	379	MODULE_DESCRIPTION("framebuffer driver for P9100 chipsets");
50312ce9 DM	380	MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
50312ce9 DM	381	MODULE_VERSION("2.0");
1da177e4	382	MODULE_LICENSE("GPL");