1/*
2 * linux/drivers/video/epson1355fb.c -- Epson S1D13505 frame buffer for 2.5.
3 *
4 * Epson Research S1D13505 Embedded RAMDAC LCD/CRT Controller
5 *   (previously known as SED1355)
6 *
7 * Cf. http://www.erd.epson.com/vdc/html/S1D13505.html
8 *
9 *
10 * Copyright (C) Hewlett-Packard Company.  All rights reserved.
11 *
12 * Written by Christopher Hoover <ch@hpl.hp.com>
13 *
14 * Adapted from:
15 *
16 *  linux/drivers/video/skeletonfb.c
17 *  Modified to new api Jan 2001 by James Simmons (jsimmons@infradead.org)
18 *  Created 28 Dec 1997 by Geert Uytterhoeven
19 *
20 *  linux/drivers/video/epson1355fb.c (2.4 driver)
21 *  Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
22 *
23 * This file is subject to the terms and conditions of the GNU General Public
24 * License. See the file COPYING in the main directory of this archive for
25 * more details.
26 *
27 *
28 * Noteworthy Issues
29 * -----------------
30 *
31 * This driver is complicated by the fact that this is a 16-bit chip
32 * and, on at least one platform (ceiva), we can only do 16-bit reads
33 * and writes to the framebuffer.  We hide this from user space
34 * except in the case of mmap().
35 *
36 *
37 * To Do
38 * -----
39 *
40 * - Test 8-bit pseudocolor mode
41 * - Allow setting bpp, virtual resolution
42 * - Implement horizontal panning
43 * - (maybe) Implement hardware cursor
44 */
45
46#include <linux/module.h>
47#include <linux/kernel.h>
48#include <linux/errno.h>
49#include <linux/string.h>
50#include <linux/mm.h>
51#include <linux/slab.h>
52#include <linux/delay.h>
53#include <linux/fb.h>
54#include <linux/init.h>
55#include <linux/ioport.h>
56#include <linux/platform_device.h>
57
58#include <asm/types.h>
59#include <asm/io.h>
60#include <asm/uaccess.h>
61
62#include <video/epson1355.h>
63
64struct epson1355_par {
65	unsigned long reg_addr;
66};
67
68/* ------------------------------------------------------------------------- */
69
70#ifdef CONFIG_SUPERH
71
72static inline u8 epson1355_read_reg(int index)
73{
74	return ctrl_inb(par.reg_addr + index);
75}
76
77static inline void epson1355_write_reg(u8 data, int index)
78{
79	ctrl_outb(data, par.reg_addr + index);
80}
81
82#elif defined(CONFIG_ARM)
83
84# ifdef CONFIG_ARCH_CEIVA
85#  include <asm/arch/hardware.h>
86#  define EPSON1355FB_BASE_PHYS	(CEIVA_PHYS_SED1355)
87# endif
88
89static inline u8 epson1355_read_reg(struct epson1355_par *par, int index)
90{
91	return __raw_readb(par->reg_addr + index);
92}
93
94static inline void epson1355_write_reg(struct epson1355_par *par, u8 data, int index)
95{
96	__raw_writeb(data, par->reg_addr + index);
97}
98
99#else
100# error "no architecture-specific epson1355_{read,write}_reg"
101#endif
102
103#ifndef EPSON1355FB_BASE_PHYS
104# error  "EPSON1355FB_BASE_PHYS is not defined"
105#endif
106
107#define EPSON1355FB_REGS_OFS	(0)
108#define EPSON1355FB_REGS_PHYS	(EPSON1355FB_BASE_PHYS + EPSON1355FB_REGS_OFS)
109#define EPSON1355FB_REGS_LEN	(64)
110
111#define EPSON1355FB_FB_OFS	(0x00200000)
112#define EPSON1355FB_FB_PHYS	(EPSON1355FB_BASE_PHYS + EPSON1355FB_FB_OFS)
113#define EPSON1355FB_FB_LEN	(2 * 1024 * 1024)
114
115/* ------------------------------------------------------------------------- */
116
117static inline u16 epson1355_read_reg16(struct epson1355_par *par, int index)
118{
119	u8 lo = epson1355_read_reg(par, index);
120	u8 hi = epson1355_read_reg(par, index + 1);
121
122	return (hi << 8) | lo;
123}
124
125static inline void epson1355_write_reg16(struct epson1355_par *par, u16 data, int index)
126{
127	u8 lo = data & 0xff;
128	u8 hi = (data >> 8) & 0xff;
129
130	epson1355_write_reg(par, lo, index);
131	epson1355_write_reg(par, hi, index + 1);
132}
133
134static inline u32 epson1355_read_reg20(struct epson1355_par *par, int index)
135{
136	u8 b0 = epson1355_read_reg(par, index);
137	u8 b1 = epson1355_read_reg(par, index + 1);
138	u8 b2 = epson1355_read_reg(par, index + 2);
139
140	return (b2 & 0x0f) << 16 | (b1 << 8) | b0;
141}
142
143static inline void epson1355_write_reg20(struct epson1355_par *par, u32 data, int index)
144{
145	u8 b0 = data & 0xff;
146	u8 b1 = (data >> 8) & 0xff;
147	u8 b2 = (data >> 16) & 0x0f;
148
149	epson1355_write_reg(par, b0, index);
150	epson1355_write_reg(par, b1, index + 1);
151	epson1355_write_reg(par, b2, index + 2);
152}
153
154/* ------------------------------------------------------------------------- */
155
156static void set_lut(struct epson1355_par *par, u8 index, u8 r, u8 g, u8 b)
157{
158	epson1355_write_reg(par, index, REG_LUT_ADDR);
159	epson1355_write_reg(par, r, REG_LUT_DATA);
160	epson1355_write_reg(par, g, REG_LUT_DATA);
161	epson1355_write_reg(par, b, REG_LUT_DATA);
162}
163
164
165/**
166 *  	epson1355fb_setcolreg - sets a color register.
167 *      @regno: Which register in the CLUT we are programming
168 *      @red: The red value which can be up to 16 bits wide
169 *	@green: The green value which can be up to 16 bits wide
170 *	@blue:  The blue value which can be up to 16 bits wide.
171 *	@transp: If supported the alpha value which can be up to 16 bits wide.
172 *      @info: frame buffer info structure
173 *
174 *	Returns negative errno on error, or zero on success.
175 */
176static int epson1355fb_setcolreg(unsigned regno, unsigned r, unsigned g,
177				 unsigned b, unsigned transp,
178				 struct fb_info *info)
179{
180	struct epson1355_par *par = info->par;
181
182	if (info->var.grayscale)
183		r = g = b = (19595 * r + 38470 * g + 7471 * b) >> 16;
184
185	switch (info->fix.visual) {
186	case FB_VISUAL_TRUECOLOR:
187		if (regno >= 16)
188			return -EINVAL;
189
190		((u32 *) info->pseudo_palette)[regno] =
191		    (r & 0xf800) | (g & 0xfc00) >> 5 | (b & 0xf800) >> 11;
192
193		break;
194	case FB_VISUAL_PSEUDOCOLOR:
195		if (regno >= 256)
196			return -EINVAL;
197
198		set_lut(par, regno, r >> 8, g >> 8, b >> 8);
199
200		break;
201	default:
202		return -ENOSYS;
203	}
204	return 0;
205}
206
207/* ------------------------------------------------------------------------- */
208
209/**
210 *      epson1355fb_pan_display - Pans the display.
211 *      @var: frame buffer variable screen structure
212 *      @info: frame buffer structure that represents a single frame buffer
213 *
214 *	Pan (or wrap, depending on the `vmode' field) the display using the
215 *  	`xoffset' and `yoffset' fields of the `var' structure.
216 *  	If the values don't fit, return -EINVAL.
217 *
218 *      Returns negative errno on error, or zero on success.
219 */
220static int epson1355fb_pan_display(struct fb_var_screeninfo *var,
221				   struct fb_info *info)
222{
223	struct epson1355_par *par = info->par;
224	u32 start;
225
226	if (var->xoffset != 0)	/* not yet ... */
227		return -EINVAL;
228
229	if (var->yoffset + info->var.yres > info->var.yres_virtual)
230		return -EINVAL;
231
232	start = (info->fix.line_length >> 1) * var->yoffset;
233
234	epson1355_write_reg20(par, start, REG_SCRN1_DISP_START_ADDR0);
235
236	return 0;
237}
238
239/* ------------------------------------------------------------------------- */
240
241static void lcd_enable(struct epson1355_par *par, int enable)
242{
243	u8 mode = epson1355_read_reg(par, REG_DISPLAY_MODE);
244
245	if (enable)
246		mode |= 1;
247	else
248		mode &= ~1;
249
250	epson1355_write_reg(par, mode, REG_DISPLAY_MODE);
251}
252
253#if defined(CONFIG_ARCH_CEIVA)
254static void backlight_enable(int enable)
255{
256	/* ### this should be protected by a spinlock ... */
257	u8 pddr = clps_readb(PDDR);
258	if (enable)
259		pddr |= (1 << 5);
260	else
261		pddr &= ~(1 << 5);
262	clps_writeb(pddr, PDDR);
263}
264#else
265static void backlight_enable(int enable)
266{
267}
268#endif
269
270
271/**
272 *      epson1355fb_blank - blanks the display.
273 *      @blank_mode: the blank mode we want.
274 *      @info: frame buffer structure that represents a single frame buffer
275 *
276 *      Blank the screen if blank_mode != 0, else unblank. Return 0 if
277 *      blanking succeeded, != 0 if un-/blanking failed due to e.g. a
278 *      video mode which doesn't support it. Implements VESA suspend
279 *      and powerdown modes on hardware that supports disabling hsync/vsync:
280 *      blank_mode == 2: suspend vsync
281 *      blank_mode == 3: suspend hsync
282 *      blank_mode == 4: powerdown
283 *
284 *      Returns negative errno on error, or zero on success.
285 *
286 */
287static int epson1355fb_blank(int blank_mode, struct fb_info *info)
288{
289	struct epson1355_par *par = info->par;
290
291	switch (blank_mode) {
292	case FB_BLANK_UNBLANKING:
293	case FB_BLANK_NORMAL:
294		lcd_enable(par, 1);
295		backlight_enable(1);
296		break;
297	case FB_BLANK_VSYNC_SUSPEND:
298	case FB_BLANK_HSYNC_SUSPEND:
299		backlight_enable(0);
300		break;
301	case FB_BLANK_POWERDOWN:
302		backlight_enable(0);
303		lcd_enable(par, 0);
304		break;
305	default:
306		return -EINVAL;
307	}
308
309	/* let fbcon do a soft blank for us */
310	return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
311}
312
313/* ------------------------------------------------------------------------- */
314
315/*
316 * We can't use the cfb generic routines, as we have to limit
317 * ourselves to 16-bit or 8-bit loads and stores to this 16-bit
318 * chip.
319 */
320
321static inline void epson1355fb_fb_writel(unsigned long v, unsigned long *a)
322{
323	u16 *p = (u16 *) a;
324	u16 l = v & 0xffff;
325	u16 h = v >> 16;
326
327	fb_writew(l, p);
328	fb_writew(h, p + 1);
329}
330
331static inline unsigned long epson1355fb_fb_readl(const unsigned long *a)
332{
333	const u16 *p = (u16 *) a;
334	u16 l = fb_readw(p);
335	u16 h = fb_readw(p + 1);
336
337	return (h << 16) | l;
338}
339
340#define FB_READL epson1355fb_fb_readl
341#define FB_WRITEL epson1355fb_fb_writel
342
343/* ------------------------------------------------------------------------- */
344
345static inline unsigned long copy_from_user16(void *to, const void *from,
346					     unsigned long n)
347{
348	u16 *dst = (u16 *) to;
349	u16 *src = (u16 *) from;
350
351	if (!access_ok(VERIFY_READ, from, n))
352		return n;
353
354	while (n > 1) {
355		u16 v;
356		if (__get_user(v, src))
357			return n;
358
359		fb_writew(v, dst);
360
361		src++, dst++;
362		n -= 2;
363	}
364
365	if (n) {
366		u8 v;
367
368		if (__get_user(v, ((u8 *) src)))
369			return n;
370
371		fb_writeb(v, dst);
372	}
373	return 0;
374}
375
376static inline unsigned long copy_to_user16(void *to, const void *from,
377					   unsigned long n)
378{
379	u16 *dst = (u16 *) to;
380	u16 *src = (u16 *) from;
381
382	if (!access_ok(VERIFY_WRITE, to, n))
383		return n;
384
385	while (n > 1) {
386		u16 v = fb_readw(src);
387
388		if (__put_user(v, dst))
389			return n;
390
391		src++, dst++;
392		n -= 2;
393	}
394
395	if (n) {
396		u8 v = fb_readb(src);
397
398		if (__put_user(v, ((u8 *) dst)))
399			return n;
400	}
401	return 0;
402}
403
404
405static ssize_t
406epson1355fb_read(struct fb_info *info, char *buf, size_t count, loff_t * ppos)
407{
408	unsigned long p = *ppos;
409
410	if (p >= info->fix.smem_len)
411		return 0;
412	if (count >= info->fix.smem_len)
413		count = info->fix.smem_len;
414	if (count + p > info->fix.smem_len)
415		count = info->fix.smem_len - p;
416
417	if (count) {
418		char *base_addr;
419
420		base_addr = info->screen_base;
421		count -= copy_to_user16(buf, base_addr + p, count);
422		if (!count)
423			return -EFAULT;
424		*ppos += count;
425	}
426	return count;
427}
428
429static ssize_t
430epson1355fb_write(struct fb_info *info, const char *buf,
431		  size_t count, loff_t * ppos)
432{
433	unsigned long p = *ppos;
434	int err;
435
436	/* from fbmem.c except for our own copy_*_user */
437	if (p > info->fix.smem_len)
438		return -ENOSPC;
439	if (count >= info->fix.smem_len)
440		count = info->fix.smem_len;
441	err = 0;
442	if (count + p > info->fix.smem_len) {
443		count = info->fix.smem_len - p;
444		err = -ENOSPC;
445	}
446
447	if (count) {
448		char *base_addr;
449
450		base_addr = info->screen_base;
451		count -= copy_from_user16(base_addr + p, buf, count);
452		*ppos += count;
453		err = -EFAULT;
454	}
455	if (count)
456		return count;
457	return err;
458}
459
460/* ------------------------------------------------------------------------- */
461
462static struct fb_ops epson1355fb_fbops = {
463	.owner 		= THIS_MODULE,
464	.fb_setcolreg 	= epson1355fb_setcolreg,
465	.fb_pan_display = epson1355fb_pan_display,
466	.fb_blank 	= epson1355fb_blank,
467	.fb_fillrect 	= cfb_fillrect,
468	.fb_copyarea 	= cfb_copyarea,
469	.fb_imageblit 	= cfb_imageblit,
470	.fb_read 	= epson1355fb_read,
471	.fb_write 	= epson1355fb_write,
472};
473
474/* ------------------------------------------------------------------------- */
475
476static __init unsigned int get_fb_size(struct fb_info *info)
477{
478	unsigned int size = 2 * 1024 * 1024;
479	char *p = info->screen_base;
480
481	/* the 512k framebuffer is aliased at start + 0x80000 * n */
482	fb_writeb(1, p);
483	fb_writeb(0, p + 0x80000);
484	if (!fb_readb(p))
485		size = 512 * 1024;
486
487	fb_writeb(0, p);
488
489	return size;
490}
491
492static int epson1355_width_tab[2][4] __initdata =
493    { {4, 8, 16, -1}, {9, 12, 16, -1} };
494static int epson1355_bpp_tab[8] __initdata = { 1, 2, 4, 8, 15, 16 };
495
496static void __init fetch_hw_state(struct fb_info *info, struct epson1355_par *par)
497{
498	struct fb_var_screeninfo *var = &info->var;
499	struct fb_fix_screeninfo *fix = &info->fix;
500	u8 panel, display;
501	u16 offset;
502	u32 xres, yres;
503	u32 xres_virtual, yres_virtual;
504	int bpp, lcd_bpp;
505	int is_color, is_dual, is_tft;
506	int lcd_enabled, crt_enabled;
507
508	fix->type = FB_TYPE_PACKED_PIXELS;
509
510	display = epson1355_read_reg(par, REG_DISPLAY_MODE);
511	bpp = epson1355_bpp_tab[(display >> 2) & 7];
512
513	switch (bpp) {
514	case 8:
515		fix->visual = FB_VISUAL_PSEUDOCOLOR;
516		var->bits_per_pixel = 8;
517		var->red.offset = var->green.offset = var->blue.offset = 0;
518		var->red.length = var->green.length = var->blue.length = 8;
519		break;
520	case 16:
521		/* 5-6-5 RGB */
522		fix->visual = FB_VISUAL_TRUECOLOR;
523		var->bits_per_pixel = 16;
524		var->red.offset = 11;
525		var->red.length = 5;
526		var->green.offset = 5;
527		var->green.length = 6;
528		var->blue.offset = 0;
529		var->blue.length = 5;
530		break;
531	default:
532		BUG();
533	}
534	fb_alloc_cmap(&(info->cmap), 256, 0);
535
536	panel = epson1355_read_reg(par, REG_PANEL_TYPE);
537	is_color = (panel & 0x04) != 0;
538	is_dual = (panel & 0x02) != 0;
539	is_tft = (panel & 0x01) != 0;
540	crt_enabled = (display & 0x02) != 0;
541	lcd_enabled = (display & 0x01) != 0;
542	lcd_bpp = epson1355_width_tab[is_tft][(panel >> 4) & 3];
543
544	xres = (epson1355_read_reg(par, REG_HORZ_DISP_WIDTH) + 1) * 8;
545	yres = (epson1355_read_reg16(par, REG_VERT_DISP_HEIGHT0) + 1) *
546	    ((is_dual && !crt_enabled) ? 2 : 1);
547	offset = epson1355_read_reg16(par, REG_MEM_ADDR_OFFSET0) & 0x7ff;
548	xres_virtual = offset * 16 / bpp;
549	yres_virtual = fix->smem_len / (offset * 2);
550
551	var->xres = xres;
552	var->yres = yres;
553	var->xres_virtual = xres_virtual;
554	var->yres_virtual = yres_virtual;
555	var->xoffset = var->yoffset = 0;
556
557	fix->line_length = offset * 2;
558
559	fix->xpanstep = 0;	/* no pan yet */
560	fix->ypanstep = 1;
561	fix->ywrapstep = 0;
562	fix->accel = FB_ACCEL_NONE;
563
564	var->grayscale = !is_color;
565
566#ifdef DEBUG
567	printk(KERN_INFO
568	       "epson1355fb: xres=%d, yres=%d, "
569	       "is_color=%d, is_dual=%d, is_tft=%d\n",
570	       xres, yres, is_color, is_dual, is_tft);
571	printk(KERN_INFO
572	       "epson1355fb: bpp=%d, lcd_bpp=%d, "
573	       "crt_enabled=%d, lcd_enabled=%d\n",
574	       bpp, lcd_bpp, crt_enabled, lcd_enabled);
575#endif
576}
577
578
579static void clearfb16(struct fb_info *info)
580{
581	u16 *dst = (u16 *) info->screen_base;
582	unsigned long n = info->fix.smem_len;
583
584	while (n > 1) {
585		fb_writew(0, dst);
586		dst++, n -= 2;
587	}
588
589	if (n)
590		fb_writeb(0, dst);
591}
592
593static int epson1355fb_remove(struct platform_device *dev)
594{
595	struct fb_info *info = platform_get_drvdata(dev);
596	struct epson1355_par *par = info->par;
597
598	backlight_enable(0);
599	if (par) {
600		lcd_enable(par, 0);
601		if (par && par->reg_addr)
602			iounmap((void *) par->reg_addr);
603	}
604
605	if (info) {
606		fb_dealloc_cmap(&info->cmap);
607		if (info->screen_base)
608			iounmap(info->screen_base);
609		framebuffer_release(info);
610	}
611	release_mem_region(EPSON1355FB_FB_PHYS, EPSON1355FB_FB_LEN);
612	release_mem_region(EPSON1355FB_REGS_PHYS, EPSON1355FB_REGS_LEN);
613	return 0;
614}
615
616int __init epson1355fb_probe(struct platform_device *dev)
617{
618	struct epson1355_par *default_par;
619	struct fb_info *info;
620	u8 revision;
621	int rc = 0;
622
623	if (!request_mem_region(EPSON1355FB_REGS_PHYS, EPSON1355FB_REGS_LEN, "S1D13505 registers")) {
624		printk(KERN_ERR "epson1355fb: unable to reserve "
625		       "registers at 0x%0x\n", EPSON1355FB_REGS_PHYS);
626		rc = -EBUSY;
627		goto bail;
628	}
629
630	if (!request_mem_region(EPSON1355FB_FB_PHYS, EPSON1355FB_FB_LEN,
631				"S1D13505 framebuffer")) {
632		printk(KERN_ERR "epson1355fb: unable to reserve "
633		       "framebuffer at 0x%0x\n", EPSON1355FB_FB_PHYS);
634		rc = -EBUSY;
635		goto bail;
636	}
637
638	info = framebuffer_alloc(sizeof(struct epson1355_par) + sizeof(u32) * 256, &dev->dev);
639	if (!info) {
640		rc = -ENOMEM;
641		goto bail;
642	}
643
644	default_par = info->par;
645	default_par->reg_addr = (unsigned long) ioremap(EPSON1355FB_REGS_PHYS, EPSON1355FB_REGS_LEN);
646	if (!default_par->reg_addr) {
647		printk(KERN_ERR "epson1355fb: unable to map registers\n");
648		rc = -ENOMEM;
649		goto bail;
650	}
651	info->pseudo_palette = (void *)(default_par + 1);
652
653	info->screen_base = ioremap(EPSON1355FB_FB_PHYS, EPSON1355FB_FB_LEN);
654	if (!info->screen_base) {
655		printk(KERN_ERR "epson1355fb: unable to map framebuffer\n");
656		rc = -ENOMEM;
657		goto bail;
658	}
659
660	revision = epson1355_read_reg(default_par, REG_REVISION_CODE);
661	if ((revision >> 2) != 3) {
662		printk(KERN_INFO "epson1355fb: epson1355 not found\n");
663		rc = -ENODEV;
664		goto bail;
665	}
666
667	info->fix.mmio_start = EPSON1355FB_REGS_PHYS;
668	info->fix.mmio_len = EPSON1355FB_REGS_LEN;
669	info->fix.smem_start = EPSON1355FB_FB_PHYS;
670	info->fix.smem_len = get_fb_size(info);
671
672	printk(KERN_INFO "epson1355fb: regs mapped at 0x%lx, fb %d KiB mapped at 0x%p\n",
673	       default_par->reg_addr, info->fix.smem_len / 1024, info->screen_base);
674
675	strcpy(info->fix.id, "S1D13505");
676	info->par = default_par;
677	info->fbops = &epson1355fb_fbops;
678	info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
679
680	/* we expect the boot loader to have initialized the chip
681	   with appropriate parameters from which we can determinte
682	   the flavor of lcd panel attached */
683	fetch_hw_state(info, default_par);
684
685	/* turn this puppy on ... */
686	clearfb16(info);
687	backlight_enable(1);
688	lcd_enable(default_par, 1);
689
690	if (register_framebuffer(info) < 0) {
691		rc = -EINVAL;
692		goto bail;
693	}
694	/*
695	 * Our driver data.
696	 */
697	platform_set_drvdata(dev, info);
698
699	printk(KERN_INFO "fb%d: %s frame buffer device\n",
700	       info->node, info->fix.id);
701
702	return 0;
703
704      bail:
705	epson1355fb_remove(dev);
706	return rc;
707}
708
709static struct platform_driver epson1355fb_driver = {
710	.probe	= epson1355fb_probe,
711	.remove	= epson1355fb_remove,
712	.driver	= {
713		.name	= "epson1355fb",
714	},
715};
716
717static struct platform_device *epson1355fb_device;
718
719int __init epson1355fb_init(void)
720{
721	int ret = 0;
722
723	if (fb_get_options("epson1355fb", NULL))
724		return -ENODEV;
725
726	ret = platform_driver_register(&epson1355fb_driver);
727
728	if (!ret) {
729		epson1355fb_device = platform_device_alloc("epson1355fb", 0);
730
731		if (epson1355fb_device)
732			ret = platform_device_add(epson1355fb_device);
733		else
734			ret = -ENOMEM;
735
736		if (ret) {
737			platform_device_put(epson1355fb_device);
738			platform_driver_unregister(&epson1355fb_driver);
739		}
740	}
741
742	return ret;
743}
744
745module_init(epson1355fb_init);
746
747#ifdef MODULE
748static void __exit epson1355fb_exit(void)
749{
750	platform_device_unregister(epson1355fb_device);
751	platform_driver_unregister(&epson1355fb_driver);
752}
753
754/* ------------------------------------------------------------------------- */
755
756module_exit(epson1355fb_exit);
757#endif
758
759MODULE_AUTHOR("Christopher Hoover <ch@hpl.hp.com>");
760MODULE_DESCRIPTION("Framebuffer driver for Epson S1D13505");
761MODULE_LICENSE("GPL");
762