blob: 082759447bf6d16ab9c881fee230f66b9841e7ea [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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/tty.h>
52#include <linux/slab.h>
53#include <linux/delay.h>
54#include <linux/fb.h>
55#include <linux/init.h>
56#include <linux/ioport.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010057#include <linux/platform_device.h>
58
Linus Torvalds1da177e2005-04-16 15:20:36 -070059#include <asm/types.h>
60#include <asm/io.h>
61#include <asm/uaccess.h>
62
63#include <video/epson1355.h>
64
65struct epson1355_par {
66 unsigned long reg_addr;
67};
68
69/* ------------------------------------------------------------------------- */
70
71#ifdef CONFIG_SUPERH
72
73static inline u8 epson1355_read_reg(int index)
74{
75 return ctrl_inb(par.reg_addr + index);
76}
77
78static inline void epson1355_write_reg(u8 data, int index)
79{
80 ctrl_outb(data, par.reg_addr + index);
81}
82
83#elif defined(CONFIG_ARM)
84
85# ifdef CONFIG_ARCH_CEIVA
86# include <asm/arch/hardware.h>
87# define EPSON1355FB_BASE_PHYS (CEIVA_PHYS_SED1355)
88# endif
89
90static inline u8 epson1355_read_reg(struct epson1355_par *par, int index)
91{
92 return __raw_readb(par->reg_addr + index);
93}
94
95static inline void epson1355_write_reg(struct epson1355_par *par, u8 data, int index)
96{
97 __raw_writeb(data, par->reg_addr + index);
98}
99
100#else
101# error "no architecture-specific epson1355_{read,write}_reg"
102#endif
103
104#ifndef EPSON1355FB_BASE_PHYS
105# error "EPSON1355FB_BASE_PHYS is not defined"
106#endif
107
108#define EPSON1355FB_REGS_OFS (0)
109#define EPSON1355FB_REGS_PHYS (EPSON1355FB_BASE_PHYS + EPSON1355FB_REGS_OFS)
110#define EPSON1355FB_REGS_LEN (64)
111
112#define EPSON1355FB_FB_OFS (0x00200000)
113#define EPSON1355FB_FB_PHYS (EPSON1355FB_BASE_PHYS + EPSON1355FB_FB_OFS)
114#define EPSON1355FB_FB_LEN (2 * 1024 * 1024)
115
116/* ------------------------------------------------------------------------- */
117
118static inline u16 epson1355_read_reg16(struct epson1355_par *par, int index)
119{
120 u8 lo = epson1355_read_reg(par, index);
121 u8 hi = epson1355_read_reg(par, index + 1);
122
123 return (hi << 8) | lo;
124}
125
126static inline void epson1355_write_reg16(struct epson1355_par *par, u16 data, int index)
127{
128 u8 lo = data & 0xff;
129 u8 hi = (data >> 8) & 0xff;
130
131 epson1355_write_reg(par, lo, index);
132 epson1355_write_reg(par, hi, index + 1);
133}
134
135static inline u32 epson1355_read_reg20(struct epson1355_par *par, int index)
136{
137 u8 b0 = epson1355_read_reg(par, index);
138 u8 b1 = epson1355_read_reg(par, index + 1);
139 u8 b2 = epson1355_read_reg(par, index + 2);
140
141 return (b2 & 0x0f) << 16 | (b1 << 8) | b0;
142}
143
144static inline void epson1355_write_reg20(struct epson1355_par *par, u32 data, int index)
145{
146 u8 b0 = data & 0xff;
147 u8 b1 = (data >> 8) & 0xff;
148 u8 b2 = (data >> 16) & 0x0f;
149
150 epson1355_write_reg(par, b0, index);
151 epson1355_write_reg(par, b1, index + 1);
152 epson1355_write_reg(par, b2, index + 2);
153}
154
155/* ------------------------------------------------------------------------- */
156
157static void set_lut(struct epson1355_par *par, u8 index, u8 r, u8 g, u8 b)
158{
159 epson1355_write_reg(par, index, REG_LUT_ADDR);
160 epson1355_write_reg(par, r, REG_LUT_DATA);
161 epson1355_write_reg(par, g, REG_LUT_DATA);
162 epson1355_write_reg(par, b, REG_LUT_DATA);
163}
164
165
166/**
167 * epson1355fb_setcolreg - sets a color register.
168 * @regno: Which register in the CLUT we are programming
169 * @red: The red value which can be up to 16 bits wide
170 * @green: The green value which can be up to 16 bits wide
171 * @blue: The blue value which can be up to 16 bits wide.
172 * @transp: If supported the alpha value which can be up to 16 bits wide.
173 * @info: frame buffer info structure
174 *
175 * Returns negative errno on error, or zero on success.
176 */
177static int epson1355fb_setcolreg(unsigned regno, unsigned r, unsigned g,
178 unsigned b, unsigned transp,
179 struct fb_info *info)
180{
181 struct epson1355_par *par = info->par;
182
183 if (info->var.grayscale)
184 r = g = b = (19595 * r + 38470 * g + 7471 * b) >> 16;
185
186 switch (info->fix.visual) {
187 case FB_VISUAL_TRUECOLOR:
188 if (regno >= 16)
189 return -EINVAL;
190
191 ((u32 *) info->pseudo_palette)[regno] =
192 (r & 0xf800) | (g & 0xfc00) >> 5 | (b & 0xf800) >> 11;
193
194 break;
195 case FB_VISUAL_PSEUDOCOLOR:
196 if (regno >= 256)
197 return -EINVAL;
198
199 set_lut(par, regno, r >> 8, g >> 8, b >> 8);
200
201 break;
202 default:
203 return -ENOSYS;
204 }
205 return 0;
206}
207
208/* ------------------------------------------------------------------------- */
209
210/**
211 * epson1355fb_pan_display - Pans the display.
212 * @var: frame buffer variable screen structure
213 * @info: frame buffer structure that represents a single frame buffer
214 *
215 * Pan (or wrap, depending on the `vmode' field) the display using the
216 * `xoffset' and `yoffset' fields of the `var' structure.
217 * If the values don't fit, return -EINVAL.
218 *
219 * Returns negative errno on error, or zero on success.
220 */
221static int epson1355fb_pan_display(struct fb_var_screeninfo *var,
222 struct fb_info *info)
223{
224 struct epson1355_par *par = info->par;
225 u32 start;
226
227 if (var->xoffset != 0) /* not yet ... */
228 return -EINVAL;
229
230 if (var->yoffset + info->var.yres > info->var.yres_virtual)
231 return -EINVAL;
232
233 start = (info->fix.line_length >> 1) * var->yoffset;
234
235 epson1355_write_reg20(par, start, REG_SCRN1_DISP_START_ADDR0);
236
237 return 0;
238}
239
240/* ------------------------------------------------------------------------- */
241
242static void lcd_enable(struct epson1355_par *par, int enable)
243{
244 u8 mode = epson1355_read_reg(par, REG_DISPLAY_MODE);
245
246 if (enable)
247 mode |= 1;
248 else
249 mode &= ~1;
250
251 epson1355_write_reg(par, mode, REG_DISPLAY_MODE);
252}
253
254#if defined(CONFIG_ARCH_CEIVA)
255static void backlight_enable(int enable)
256{
257 /* ### this should be protected by a spinlock ... */
258 u8 pddr = clps_readb(PDDR);
259 if (enable)
260 pddr |= (1 << 5);
261 else
262 pddr &= ~(1 << 5);
263 clps_writeb(pddr, PDDR);
264}
265#else
266static void backlight_enable(int enable)
267{
268}
269#endif
270
271
272/**
273 * epson1355fb_blank - blanks the display.
274 * @blank_mode: the blank mode we want.
275 * @info: frame buffer structure that represents a single frame buffer
276 *
277 * Blank the screen if blank_mode != 0, else unblank. Return 0 if
278 * blanking succeeded, != 0 if un-/blanking failed due to e.g. a
279 * video mode which doesn't support it. Implements VESA suspend
280 * and powerdown modes on hardware that supports disabling hsync/vsync:
281 * blank_mode == 2: suspend vsync
282 * blank_mode == 3: suspend hsync
283 * blank_mode == 4: powerdown
284 *
285 * Returns negative errno on error, or zero on success.
286 *
287 */
288static int epson1355fb_blank(int blank_mode, struct fb_info *info)
289{
290 struct epson1355_par *par = info->par;
291
292 switch (blank_mode) {
293 case FB_BLANK_UNBLANKING:
294 case FB_BLANK_NORMAL:
295 lcd_enable(par, 1);
296 backlight_enable(1);
297 break;
298 case FB_BLANK_VSYNC_SUSPEND:
299 case FB_BLANK_HSYNC_SUSPEND:
300 backlight_enable(0);
301 break;
302 case FB_BLANK_POWERDOWN:
303 backlight_enable(0);
304 lcd_enable(par, 0);
305 break;
306 default:
307 return -EINVAL;
308 }
309
310 /* let fbcon do a soft blank for us */
311 return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
312}
313
314/* ------------------------------------------------------------------------- */
315
316/*
317 * We can't use the cfb generic routines, as we have to limit
318 * ourselves to 16-bit or 8-bit loads and stores to this 16-bit
319 * chip.
320 */
321
322static inline void epson1355fb_fb_writel(unsigned long v, unsigned long *a)
323{
324 u16 *p = (u16 *) a;
325 u16 l = v & 0xffff;
326 u16 h = v >> 16;
327
328 fb_writew(l, p);
329 fb_writew(h, p + 1);
330}
331
332static inline unsigned long epson1355fb_fb_readl(const unsigned long *a)
333{
334 const u16 *p = (u16 *) a;
335 u16 l = fb_readw(p);
336 u16 h = fb_readw(p + 1);
337
338 return (h << 16) | l;
339}
340
341#define FB_READL epson1355fb_fb_readl
342#define FB_WRITEL epson1355fb_fb_writel
343
344/* ------------------------------------------------------------------------- */
345
346static inline unsigned long copy_from_user16(void *to, const void *from,
347 unsigned long n)
348{
349 u16 *dst = (u16 *) to;
350 u16 *src = (u16 *) from;
351
352 if (!access_ok(VERIFY_READ, from, n))
353 return n;
354
355 while (n > 1) {
356 u16 v;
357 if (__get_user(v, src))
358 return n;
359
360 fb_writew(v, dst);
361
362 src++, dst++;
363 n -= 2;
364 }
365
366 if (n) {
367 u8 v;
368
369 if (__get_user(v, ((u8 *) src)))
370 return n;
371
372 fb_writeb(v, dst);
373 }
374 return 0;
375}
376
377static inline unsigned long copy_to_user16(void *to, const void *from,
378 unsigned long n)
379{
380 u16 *dst = (u16 *) to;
381 u16 *src = (u16 *) from;
382
383 if (!access_ok(VERIFY_WRITE, to, n))
384 return n;
385
386 while (n > 1) {
387 u16 v = fb_readw(src);
388
389 if (__put_user(v, dst))
390 return n;
391
392 src++, dst++;
393 n -= 2;
394 }
395
396 if (n) {
397 u8 v = fb_readb(src);
398
399 if (__put_user(v, ((u8 *) dst)))
400 return n;
401 }
402 return 0;
403}
404
405
406static ssize_t
407epson1355fb_read(struct file *file, char *buf, size_t count, loff_t * ppos)
408{
409 struct inode *inode = file->f_dentry->d_inode;
410 int fbidx = iminor(inode);
411 struct fb_info *info = registered_fb[fbidx];
412 unsigned long p = *ppos;
413
414 /* from fbmem.c except for our own copy_*_user */
415 if (!info || !info->screen_base)
416 return -ENODEV;
417
418 if (p >= info->fix.smem_len)
419 return 0;
420 if (count >= info->fix.smem_len)
421 count = info->fix.smem_len;
422 if (count + p > info->fix.smem_len)
423 count = info->fix.smem_len - p;
424
425 if (count) {
426 char *base_addr;
427
428 base_addr = info->screen_base;
429 count -= copy_to_user16(buf, base_addr + p, count);
430 if (!count)
431 return -EFAULT;
432 *ppos += count;
433 }
434 return count;
435}
436
437static ssize_t
438epson1355fb_write(struct file *file, const char *buf,
439 size_t count, loff_t * ppos)
440{
441 struct inode *inode = file->f_dentry->d_inode;
442 int fbidx = iminor(inode);
443 struct fb_info *info = registered_fb[fbidx];
444 unsigned long p = *ppos;
445 int err;
446
447 /* from fbmem.c except for our own copy_*_user */
448 if (!info || !info->screen_base)
449 return -ENODEV;
450
451 /* from fbmem.c except for our own copy_*_user */
452 if (p > info->fix.smem_len)
453 return -ENOSPC;
454 if (count >= info->fix.smem_len)
455 count = info->fix.smem_len;
456 err = 0;
457 if (count + p > info->fix.smem_len) {
458 count = info->fix.smem_len - p;
459 err = -ENOSPC;
460 }
461
462 if (count) {
463 char *base_addr;
464
465 base_addr = info->screen_base;
466 count -= copy_from_user16(base_addr + p, buf, count);
467 *ppos += count;
468 err = -EFAULT;
469 }
470 if (count)
471 return count;
472 return err;
473}
474
475/* ------------------------------------------------------------------------- */
476
477static struct fb_ops epson1355fb_fbops = {
478 .owner = THIS_MODULE,
479 .fb_setcolreg = epson1355fb_setcolreg,
480 .fb_pan_display = epson1355fb_pan_display,
481 .fb_blank = epson1355fb_blank,
482 .fb_fillrect = cfb_fillrect,
483 .fb_copyarea = cfb_copyarea,
484 .fb_imageblit = cfb_imageblit,
485 .fb_read = epson1355fb_read,
486 .fb_write = epson1355fb_write,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487};
488
489/* ------------------------------------------------------------------------- */
490
491static __init unsigned int get_fb_size(struct fb_info *info)
492{
493 unsigned int size = 2 * 1024 * 1024;
494 char *p = info->screen_base;
495
496 /* the 512k framebuffer is aliased at start + 0x80000 * n */
497 fb_writeb(1, p);
498 fb_writeb(0, p + 0x80000);
499 if (!fb_readb(p))
500 size = 512 * 1024;
501
502 fb_writeb(0, p);
503
504 return size;
505}
506
507static int epson1355_width_tab[2][4] __initdata =
508 { {4, 8, 16, -1}, {9, 12, 16, -1} };
509static int epson1355_bpp_tab[8] __initdata = { 1, 2, 4, 8, 15, 16 };
510
511static void __init fetch_hw_state(struct fb_info *info, struct epson1355_par *par)
512{
513 struct fb_var_screeninfo *var = &info->var;
514 struct fb_fix_screeninfo *fix = &info->fix;
515 u8 panel, display;
516 u16 offset;
517 u32 xres, yres;
518 u32 xres_virtual, yres_virtual;
519 int bpp, lcd_bpp;
520 int is_color, is_dual, is_tft;
521 int lcd_enabled, crt_enabled;
522
523 fix->type = FB_TYPE_PACKED_PIXELS;
524
525 display = epson1355_read_reg(par, REG_DISPLAY_MODE);
526 bpp = epson1355_bpp_tab[(display >> 2) & 7];
527
528 switch (bpp) {
529 case 8:
530 fix->visual = FB_VISUAL_PSEUDOCOLOR;
531 var->bits_per_pixel = 8;
532 var->red.offset = var->green.offset = var->blue.offset = 0;
533 var->red.length = var->green.length = var->blue.length = 8;
534 break;
535 case 16:
536 /* 5-6-5 RGB */
537 fix->visual = FB_VISUAL_TRUECOLOR;
538 var->bits_per_pixel = 16;
539 var->red.offset = 11;
540 var->red.length = 5;
541 var->green.offset = 5;
542 var->green.length = 6;
543 var->blue.offset = 0;
544 var->blue.length = 5;
545 break;
546 default:
547 BUG();
548 }
549 fb_alloc_cmap(&(info->cmap), 256, 0);
550
551 panel = epson1355_read_reg(par, REG_PANEL_TYPE);
552 is_color = (panel & 0x04) != 0;
553 is_dual = (panel & 0x02) != 0;
554 is_tft = (panel & 0x01) != 0;
555 crt_enabled = (display & 0x02) != 0;
556 lcd_enabled = (display & 0x01) != 0;
557 lcd_bpp = epson1355_width_tab[is_tft][(panel >> 4) & 3];
558
559 xres = (epson1355_read_reg(par, REG_HORZ_DISP_WIDTH) + 1) * 8;
560 yres = (epson1355_read_reg16(par, REG_VERT_DISP_HEIGHT0) + 1) *
561 ((is_dual && !crt_enabled) ? 2 : 1);
562 offset = epson1355_read_reg16(par, REG_MEM_ADDR_OFFSET0) & 0x7ff;
563 xres_virtual = offset * 16 / bpp;
564 yres_virtual = fix->smem_len / (offset * 2);
565
566 var->xres = xres;
567 var->yres = yres;
568 var->xres_virtual = xres_virtual;
569 var->yres_virtual = yres_virtual;
570 var->xoffset = var->yoffset = 0;
571
572 fix->line_length = offset * 2;
573
574 fix->xpanstep = 0; /* no pan yet */
575 fix->ypanstep = 1;
576 fix->ywrapstep = 0;
577 fix->accel = FB_ACCEL_NONE;
578
579 var->grayscale = !is_color;
580
581#ifdef DEBUG
582 printk(KERN_INFO
583 "epson1355fb: xres=%d, yres=%d, "
584 "is_color=%d, is_dual=%d, is_tft=%d\n",
585 xres, yres, is_color, is_dual, is_tft);
586 printk(KERN_INFO
587 "epson1355fb: bpp=%d, lcd_bpp=%d, "
588 "crt_enabled=%d, lcd_enabled=%d\n",
589 bpp, lcd_bpp, crt_enabled, lcd_enabled);
590#endif
591}
592
593
594static void clearfb16(struct fb_info *info)
595{
596 u16 *dst = (u16 *) info->screen_base;
597 unsigned long n = info->fix.smem_len;
598
599 while (n > 1) {
600 fb_writew(0, dst);
601 dst++, n -= 2;
602 }
603
604 if (n)
605 fb_writeb(0, dst);
606}
607
608static void epson1355fb_platform_release(struct device *device)
609{
Greg Kroah-Hartman972de6c2006-03-20 13:17:13 -0800610 dev_err(device, "This driver is broken, please bug the authors so they will fix it.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611}
612
Russell King3ae5eae2005-11-09 22:32:44 +0000613static int epson1355fb_remove(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614{
Russell King3ae5eae2005-11-09 22:32:44 +0000615 struct fb_info *info = platform_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 struct epson1355_par *par = info->par;
617
618 backlight_enable(0);
619 if (par) {
620 lcd_enable(par, 0);
621 if (par && par->reg_addr)
622 iounmap((void *) par->reg_addr);
623 }
624
625 if (info) {
626 fb_dealloc_cmap(&info->cmap);
627 if (info->screen_base)
628 iounmap(info->screen_base);
629 framebuffer_release(info);
630 }
631 release_mem_region(EPSON1355FB_FB_PHYS, EPSON1355FB_FB_LEN);
632 release_mem_region(EPSON1355FB_REGS_PHYS, EPSON1355FB_REGS_LEN);
633 return 0;
634}
635
Russell King3ae5eae2005-11-09 22:32:44 +0000636int __init epson1355fb_probe(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 struct epson1355_par *default_par;
639 struct fb_info *info;
640 u8 revision;
641 int rc = 0;
642
643 if (!request_mem_region(EPSON1355FB_REGS_PHYS, EPSON1355FB_REGS_LEN, "S1D13505 registers")) {
644 printk(KERN_ERR "epson1355fb: unable to reserve "
645 "registers at 0x%0x\n", EPSON1355FB_REGS_PHYS);
646 rc = -EBUSY;
647 goto bail;
648 }
649
650 if (!request_mem_region(EPSON1355FB_FB_PHYS, EPSON1355FB_FB_LEN,
651 "S1D13505 framebuffer")) {
652 printk(KERN_ERR "epson1355fb: unable to reserve "
653 "framebuffer at 0x%0x\n", EPSON1355FB_FB_PHYS);
654 rc = -EBUSY;
655 goto bail;
656 }
657
658 info = framebuffer_alloc(sizeof(struct epson1355_par) + sizeof(u32) * 256, &dev->dev);
659 if (!info)
660 rc = -ENOMEM;
661 goto bail;
662
663 default_par = info->par;
664 default_par->reg_addr = (unsigned long) ioremap(EPSON1355FB_REGS_PHYS, EPSON1355FB_REGS_LEN);
665 if (!default_par->reg_addr) {
666 printk(KERN_ERR "epson1355fb: unable to map registers\n");
667 rc = -ENOMEM;
668 goto bail;
669 }
670 info->pseudo_palette = (void *)(default_par + 1);
671
672 info->screen_base = ioremap(EPSON1355FB_FB_PHYS, EPSON1355FB_FB_LEN);
673 if (!info->screen_base) {
674 printk(KERN_ERR "epson1355fb: unable to map framebuffer\n");
675 rc = -ENOMEM;
676 goto bail;
677 }
678
679 revision = epson1355_read_reg(default_par, REG_REVISION_CODE);
680 if ((revision >> 2) != 3) {
681 printk(KERN_INFO "epson1355fb: epson1355 not found\n");
682 rc = -ENODEV;
683 goto bail;
684 }
685
686 info->fix.mmio_start = EPSON1355FB_REGS_PHYS;
687 info->fix.mmio_len = EPSON1355FB_REGS_LEN;
688 info->fix.smem_start = EPSON1355FB_FB_PHYS;
689 info->fix.smem_len = get_fb_size(info);
690
691 printk(KERN_INFO "epson1355fb: regs mapped at 0x%lx, fb %d KiB mapped at 0x%p\n",
692 default_par->reg_addr, info->fix.smem_len / 1024, info->screen_base);
693
694 strcpy(info->fix.id, "S1D13505");
695 info->par = default_par;
696 info->fbops = &epson1355fb_fbops;
697 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
698
699 /* we expect the boot loader to have initialized the chip
700 with appropriate parameters from which we can determinte
701 the flavor of lcd panel attached */
702 fetch_hw_state(info, default_par);
703
704 /* turn this puppy on ... */
705 clearfb16(info);
706 backlight_enable(1);
707 lcd_enable(default_par, 1);
708
709 if (register_framebuffer(info) < 0) {
710 rc = -EINVAL;
711 goto bail;
712 }
713 /*
714 * Our driver data.
715 */
Russell King3ae5eae2005-11-09 22:32:44 +0000716 platform_set_drvdata(dev, info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
718 printk(KERN_INFO "fb%d: %s frame buffer device\n",
719 info->node, info->fix.id);
720
721 return 0;
722
723 bail:
Russell King3ae5eae2005-11-09 22:32:44 +0000724 epson1355fb_remove(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 return rc;
726}
727
Russell King3ae5eae2005-11-09 22:32:44 +0000728static struct platform_driver epson1355fb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 .probe = epson1355fb_probe,
730 .remove = epson1355fb_remove,
Russell King3ae5eae2005-11-09 22:32:44 +0000731 .driver = {
732 .name = "epson1355fb",
733 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734};
735
736static struct platform_device epson1355fb_device = {
737 .name = "epson1355fb",
738 .id = 0,
739 .dev = {
740 .release = epson1355fb_platform_release,
741 }
742};
743
744int __init epson1355fb_init(void)
745{
746 int ret = 0;
747
748 if (fb_get_options("epson1355fb", NULL))
749 return -ENODEV;
750
Russell King3ae5eae2005-11-09 22:32:44 +0000751 ret = platform_driver_register(&epson1355fb_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 if (!ret) {
753 ret = platform_device_register(&epson1355fb_device);
754 if (ret)
Russell King3ae5eae2005-11-09 22:32:44 +0000755 platform_driver_unregister(&epson1355fb_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 }
757 return ret;
758}
759
760module_init(epson1355fb_init);
761
762#ifdef MODULE
763static void __exit epson1355fb_exit(void)
764{
765 platform_device_unregister(&epson1355fb_device);
Russell King3ae5eae2005-11-09 22:32:44 +0000766 platform_driver_unregister(&epson1355fb_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767}
768
769/* ------------------------------------------------------------------------- */
770
771module_exit(epson1355fb_exit);
772#endif
773
774MODULE_AUTHOR("Christopher Hoover <ch@hpl.hp.com>");
775MODULE_DESCRIPTION("Framebuffer driver for Epson S1D13505");
776MODULE_LICENSE("GPL");