Commit | Line | Data |
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4a25e418 NI |
1 | /* |
2 | * SH7760/SH7763 LCDC Framebuffer driver. | |
3 | * | |
4 | * (c) 2006-2008 MSC Vertriebsges.m.b.H., | |
5 | * Manuel Lauss <mano@roarinelk.homelinux.net> | |
6 | * (c) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> | |
7 | * | |
8 | * This file is subject to the terms and conditions of the GNU General | |
9 | * Public License. See the file COPYING in the main directory of this | |
10 | * archive for more details. | |
11 | * | |
12 | * PLEASE HAVE A LOOK AT Documentation/fb/sh7760fb.txt! | |
13 | * | |
14 | * Thanks to Siegfried Schaefer <s.schaefer at schaefer-edv.de> | |
15 | * for his original source and testing! | |
679dc3c9 NI |
16 | * |
17 | * sh7760_setcolreg get from drivers/video/sh_mobile_lcdcfb.c | |
4a25e418 NI |
18 | */ |
19 | ||
20 | #include <linux/completion.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/dma-mapping.h> | |
23 | #include <linux/fb.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/io.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/platform_device.h> | |
29 | ||
30 | #include <asm/sh7760fb.h> | |
31 | ||
32 | struct sh7760fb_par { | |
33 | void __iomem *base; | |
34 | int irq; | |
35 | ||
36 | struct sh7760fb_platdata *pd; /* display information */ | |
37 | ||
38 | dma_addr_t fbdma; /* physical address */ | |
39 | ||
40 | int rot; /* rotation enabled? */ | |
41 | ||
42 | u32 pseudo_palette[16]; | |
43 | ||
44 | struct platform_device *dev; | |
45 | struct resource *ioarea; | |
46 | struct completion vsync; /* vsync irq event */ | |
47 | }; | |
48 | ||
49 | static irqreturn_t sh7760fb_irq(int irq, void *data) | |
50 | { | |
51 | struct completion *c = data; | |
52 | ||
53 | complete(c); | |
54 | ||
55 | return IRQ_HANDLED; | |
56 | } | |
57 | ||
4a25e418 NI |
58 | /* wait_for_lps - wait until power supply has reached a certain state. */ |
59 | static int wait_for_lps(struct sh7760fb_par *par, int val) | |
60 | { | |
61 | int i = 100; | |
62 | while (--i && ((ioread16(par->base + LDPMMR) & 3) != val)) | |
63 | msleep(1); | |
64 | ||
65 | if (i <= 0) | |
66 | return -ETIMEDOUT; | |
67 | ||
68 | return 0; | |
69 | } | |
70 | ||
71 | /* en/disable the LCDC */ | |
72 | static int sh7760fb_blank(int blank, struct fb_info *info) | |
73 | { | |
74 | struct sh7760fb_par *par = info->par; | |
75 | struct sh7760fb_platdata *pd = par->pd; | |
76 | unsigned short cntr = ioread16(par->base + LDCNTR); | |
77 | unsigned short intr = ioread16(par->base + LDINTR); | |
78 | int lps; | |
79 | ||
80 | if (blank == FB_BLANK_UNBLANK) { | |
81 | intr |= VINT_START; | |
82 | cntr = LDCNTR_DON2 | LDCNTR_DON; | |
83 | lps = 3; | |
84 | } else { | |
85 | intr &= ~VINT_START; | |
86 | cntr = LDCNTR_DON2; | |
87 | lps = 0; | |
88 | } | |
89 | ||
90 | if (pd->blank) | |
91 | pd->blank(blank); | |
92 | ||
93 | iowrite16(intr, par->base + LDINTR); | |
94 | iowrite16(cntr, par->base + LDCNTR); | |
95 | ||
96 | return wait_for_lps(par, lps); | |
97 | } | |
98 | ||
679dc3c9 NI |
99 | static int sh7760_setcolreg (u_int regno, |
100 | u_int red, u_int green, u_int blue, | |
101 | u_int transp, struct fb_info *info) | |
4a25e418 | 102 | { |
679dc3c9 | 103 | u32 *palette = info->pseudo_palette; |
4a25e418 | 104 | |
679dc3c9 NI |
105 | if (regno >= 16) |
106 | return -EINVAL; | |
107 | ||
108 | /* only FB_VISUAL_TRUECOLOR supported */ | |
109 | ||
110 | red >>= 16 - info->var.red.length; | |
111 | green >>= 16 - info->var.green.length; | |
112 | blue >>= 16 - info->var.blue.length; | |
113 | transp >>= 16 - info->var.transp.length; | |
114 | ||
115 | palette[regno] = (red << info->var.red.offset) | | |
116 | (green << info->var.green.offset) | | |
117 | (blue << info->var.blue.offset) | | |
118 | (transp << info->var.transp.offset); | |
119 | ||
120 | return 0; | |
4a25e418 NI |
121 | } |
122 | ||
123 | static void encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info, | |
124 | unsigned long stride) | |
125 | { | |
126 | memset(fix, 0, sizeof(struct fb_fix_screeninfo)); | |
127 | strcpy(fix->id, "sh7760-lcdc"); | |
128 | ||
129 | fix->smem_start = (unsigned long)info->screen_base; | |
130 | fix->smem_len = info->screen_size; | |
131 | ||
132 | fix->line_length = stride; | |
133 | } | |
134 | ||
135 | static int sh7760fb_get_color_info(struct device *dev, | |
136 | u16 lddfr, int *bpp, int *gray) | |
137 | { | |
138 | int lbpp, lgray; | |
139 | ||
140 | lgray = lbpp = 0; | |
141 | ||
142 | switch (lddfr & LDDFR_COLOR_MASK) { | |
143 | case LDDFR_1BPP_MONO: | |
144 | lgray = 1; | |
145 | lbpp = 1; | |
146 | break; | |
147 | case LDDFR_2BPP_MONO: | |
148 | lgray = 1; | |
149 | lbpp = 2; | |
150 | break; | |
151 | case LDDFR_4BPP_MONO: | |
152 | lgray = 1; | |
153 | case LDDFR_4BPP: | |
154 | lbpp = 4; | |
155 | break; | |
156 | case LDDFR_6BPP_MONO: | |
157 | lgray = 1; | |
158 | case LDDFR_8BPP: | |
159 | lbpp = 8; | |
160 | break; | |
161 | case LDDFR_16BPP_RGB555: | |
162 | case LDDFR_16BPP_RGB565: | |
163 | lbpp = 16; | |
164 | lgray = 0; | |
165 | break; | |
166 | default: | |
167 | dev_dbg(dev, "unsupported LDDFR bit depth.\n"); | |
168 | return -EINVAL; | |
169 | } | |
170 | ||
171 | if (bpp) | |
172 | *bpp = lbpp; | |
173 | if (gray) | |
174 | *gray = lgray; | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | static int sh7760fb_check_var(struct fb_var_screeninfo *var, | |
180 | struct fb_info *info) | |
181 | { | |
182 | struct fb_fix_screeninfo *fix = &info->fix; | |
183 | struct sh7760fb_par *par = info->par; | |
184 | int ret, bpp; | |
185 | ||
186 | /* get color info from register value */ | |
187 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL); | |
188 | if (ret) | |
189 | return ret; | |
190 | ||
191 | var->bits_per_pixel = bpp; | |
192 | ||
193 | if ((var->grayscale) && (var->bits_per_pixel == 1)) | |
194 | fix->visual = FB_VISUAL_MONO10; | |
195 | else if (var->bits_per_pixel >= 15) | |
196 | fix->visual = FB_VISUAL_TRUECOLOR; | |
197 | else | |
198 | fix->visual = FB_VISUAL_PSEUDOCOLOR; | |
199 | ||
200 | /* TODO: add some more validation here */ | |
201 | return 0; | |
202 | } | |
203 | ||
204 | /* | |
205 | * sh7760fb_set_par - set videomode. | |
206 | * | |
207 | * NOTE: The rotation, grayscale and DSTN codepaths are | |
208 | * totally untested! | |
209 | */ | |
210 | static int sh7760fb_set_par(struct fb_info *info) | |
211 | { | |
212 | struct sh7760fb_par *par = info->par; | |
213 | struct fb_videomode *vm = par->pd->def_mode; | |
214 | unsigned long sbase, dstn_off, ldsarl, stride; | |
215 | unsigned short hsynp, hsynw, htcn, hdcn; | |
216 | unsigned short vsynp, vsynw, vtln, vdln; | |
217 | unsigned short lddfr, ldmtr; | |
218 | int ret, bpp, gray; | |
219 | ||
220 | par->rot = par->pd->rotate; | |
221 | ||
222 | /* rotate only works with xres <= 320 */ | |
223 | if (par->rot && (vm->xres > 320)) { | |
224 | dev_dbg(info->dev, "rotation disabled due to display size\n"); | |
225 | par->rot = 0; | |
226 | } | |
227 | ||
228 | /* calculate LCDC reg vals from display parameters */ | |
229 | hsynp = vm->right_margin + vm->xres; | |
230 | hsynw = vm->hsync_len; | |
231 | htcn = vm->left_margin + hsynp + hsynw; | |
232 | hdcn = vm->xres; | |
233 | vsynp = vm->lower_margin + vm->yres; | |
234 | vsynw = vm->vsync_len; | |
235 | vtln = vm->upper_margin + vsynp + vsynw; | |
236 | vdln = vm->yres; | |
237 | ||
238 | /* get color info from register value */ | |
239 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, &gray); | |
240 | if (ret) | |
241 | return ret; | |
242 | ||
243 | dev_dbg(info->dev, "%dx%d %dbpp %s (orientation %s)\n", hdcn, | |
244 | vdln, bpp, gray ? "grayscale" : "color", | |
245 | par->rot ? "rotated" : "normal"); | |
246 | ||
247 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
248 | lddfr = par->pd->lddfr | (1 << 8); | |
249 | #else | |
250 | lddfr = par->pd->lddfr & ~(1 << 8); | |
251 | #endif | |
252 | ||
253 | ldmtr = par->pd->ldmtr; | |
254 | ||
255 | if (!(vm->sync & FB_SYNC_HOR_HIGH_ACT)) | |
256 | ldmtr |= LDMTR_CL1POL; | |
257 | if (!(vm->sync & FB_SYNC_VERT_HIGH_ACT)) | |
258 | ldmtr |= LDMTR_FLMPOL; | |
259 | ||
260 | /* shut down LCDC before changing display parameters */ | |
261 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); | |
262 | ||
263 | iowrite16(par->pd->ldickr, par->base + LDICKR); /* pixclock */ | |
264 | iowrite16(ldmtr, par->base + LDMTR); /* polarities */ | |
265 | iowrite16(lddfr, par->base + LDDFR); /* color/depth */ | |
266 | iowrite16((par->rot ? 1 << 13 : 0), par->base + LDSMR); /* rotate */ | |
267 | iowrite16(par->pd->ldpmmr, par->base + LDPMMR); /* Power Management */ | |
268 | iowrite16(par->pd->ldpspr, par->base + LDPSPR); /* Power Supply Ctrl */ | |
269 | ||
270 | /* display resolution */ | |
271 | iowrite16(((htcn >> 3) - 1) | (((hdcn >> 3) - 1) << 8), | |
272 | par->base + LDHCNR); | |
273 | iowrite16(vdln - 1, par->base + LDVDLNR); | |
274 | iowrite16(vtln - 1, par->base + LDVTLNR); | |
275 | /* h/v sync signals */ | |
276 | iowrite16((vsynp - 1) | ((vsynw - 1) << 12), par->base + LDVSYNR); | |
277 | iowrite16(((hsynp >> 3) - 1) | (((hsynw >> 3) - 1) << 12), | |
278 | par->base + LDHSYNR); | |
279 | /* AC modulation sig */ | |
280 | iowrite16(par->pd->ldaclnr, par->base + LDACLNR); | |
281 | ||
282 | stride = (par->rot) ? vtln : hdcn; | |
283 | if (!gray) | |
284 | stride *= (bpp + 7) >> 3; | |
285 | else { | |
286 | if (bpp == 1) | |
287 | stride >>= 3; | |
288 | else if (bpp == 2) | |
289 | stride >>= 2; | |
290 | else if (bpp == 4) | |
291 | stride >>= 1; | |
292 | /* 6 bpp == 8 bpp */ | |
293 | } | |
294 | ||
295 | /* if rotated, stride must be power of 2 */ | |
296 | if (par->rot) { | |
297 | unsigned long bit = 1 << 31; | |
298 | while (bit) { | |
299 | if (stride & bit) | |
300 | break; | |
301 | bit >>= 1; | |
302 | } | |
303 | if (stride & ~bit) | |
304 | stride = bit << 1; /* not P-o-2, round up */ | |
305 | } | |
306 | iowrite16(stride, par->base + LDLAOR); | |
307 | ||
308 | /* set display mem start address */ | |
309 | sbase = (unsigned long)par->fbdma; | |
310 | if (par->rot) | |
311 | sbase += (hdcn - 1) * stride; | |
312 | ||
313 | iowrite32(sbase, par->base + LDSARU); | |
314 | ||
315 | /* | |
316 | * for DSTN need to set address for lower half. | |
317 | * I (mlau) don't know which address to set it to, | |
318 | * so I guessed at (stride * yres/2). | |
319 | */ | |
320 | if (((ldmtr & 0x003f) >= LDMTR_DSTN_MONO_8) && | |
321 | ((ldmtr & 0x003f) <= LDMTR_DSTN_COLOR_16)) { | |
322 | ||
323 | dev_dbg(info->dev, " ***** DSTN untested! *****\n"); | |
324 | ||
325 | dstn_off = stride; | |
326 | if (par->rot) | |
327 | dstn_off *= hdcn >> 1; | |
328 | else | |
329 | dstn_off *= vdln >> 1; | |
330 | ||
331 | ldsarl = sbase + dstn_off; | |
332 | } else | |
333 | ldsarl = 0; | |
334 | ||
335 | iowrite32(ldsarl, par->base + LDSARL); /* mem for lower half of DSTN */ | |
336 | ||
337 | encode_fix(&info->fix, info, stride); | |
338 | sh7760fb_check_var(&info->var, info); | |
339 | ||
340 | sh7760fb_blank(FB_BLANK_UNBLANK, info); /* panel on! */ | |
341 | ||
342 | dev_dbg(info->dev, "hdcn : %6d htcn : %6d\n", hdcn, htcn); | |
343 | dev_dbg(info->dev, "hsynw : %6d hsynp : %6d\n", hsynw, hsynp); | |
344 | dev_dbg(info->dev, "vdln : %6d vtln : %6d\n", vdln, vtln); | |
345 | dev_dbg(info->dev, "vsynw : %6d vsynp : %6d\n", vsynw, vsynp); | |
346 | dev_dbg(info->dev, "clksrc: %6d clkdiv: %6d\n", | |
347 | (par->pd->ldickr >> 12) & 3, par->pd->ldickr & 0x1f); | |
348 | dev_dbg(info->dev, "ldpmmr: 0x%04x ldpspr: 0x%04x\n", par->pd->ldpmmr, | |
349 | par->pd->ldpspr); | |
350 | dev_dbg(info->dev, "ldmtr : 0x%04x lddfr : 0x%04x\n", ldmtr, lddfr); | |
351 | dev_dbg(info->dev, "ldlaor: %ld\n", stride); | |
352 | dev_dbg(info->dev, "ldsaru: 0x%08lx ldsarl: 0x%08lx\n", sbase, ldsarl); | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | static struct fb_ops sh7760fb_ops = { | |
358 | .owner = THIS_MODULE, | |
359 | .fb_blank = sh7760fb_blank, | |
360 | .fb_check_var = sh7760fb_check_var, | |
679dc3c9 | 361 | .fb_setcolreg = sh7760_setcolreg, |
4a25e418 NI |
362 | .fb_set_par = sh7760fb_set_par, |
363 | .fb_fillrect = cfb_fillrect, | |
364 | .fb_copyarea = cfb_copyarea, | |
365 | .fb_imageblit = cfb_imageblit, | |
366 | }; | |
367 | ||
368 | static void sh7760fb_free_mem(struct fb_info *info) | |
369 | { | |
370 | struct sh7760fb_par *par = info->par; | |
371 | ||
372 | if (!info->screen_base) | |
373 | return; | |
374 | ||
375 | dma_free_coherent(info->dev, info->screen_size, | |
376 | info->screen_base, par->fbdma); | |
377 | ||
378 | par->fbdma = 0; | |
379 | info->screen_base = NULL; | |
380 | info->screen_size = 0; | |
381 | } | |
382 | ||
383 | /* allocate the framebuffer memory. This memory must be in Area3, | |
384 | * (dictated by the DMA engine) and contiguous, at a 512 byte boundary. | |
385 | */ | |
386 | static int sh7760fb_alloc_mem(struct fb_info *info) | |
387 | { | |
388 | struct sh7760fb_par *par = info->par; | |
389 | void *fbmem; | |
390 | unsigned long vram; | |
391 | int ret, bpp; | |
392 | ||
393 | if (info->screen_base) | |
394 | return 0; | |
395 | ||
396 | /* get color info from register value */ | |
397 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL); | |
398 | if (ret) { | |
399 | printk(KERN_ERR "colinfo\n"); | |
400 | return ret; | |
401 | } | |
402 | ||
403 | /* min VRAM: xres_min = 16, yres_min = 1, bpp = 1: 2byte -> 1 page | |
404 | max VRAM: xres_max = 1024, yres_max = 1024, bpp = 16: 2MB */ | |
405 | ||
406 | vram = info->var.xres * info->var.yres; | |
407 | if (info->var.grayscale) { | |
408 | if (bpp == 1) | |
409 | vram >>= 3; | |
410 | else if (bpp == 2) | |
411 | vram >>= 2; | |
412 | else if (bpp == 4) | |
413 | vram >>= 1; | |
414 | } else if (bpp > 8) | |
415 | vram *= 2; | |
416 | if ((vram < 1) || (vram > 1024 * 2048)) { | |
417 | dev_dbg(info->dev, "too much VRAM required. Check settings\n"); | |
418 | return -ENODEV; | |
419 | } | |
420 | ||
421 | if (vram < PAGE_SIZE) | |
422 | vram = PAGE_SIZE; | |
423 | ||
424 | fbmem = dma_alloc_coherent(info->dev, vram, &par->fbdma, GFP_KERNEL); | |
425 | ||
426 | if (!fbmem) | |
427 | return -ENOMEM; | |
428 | ||
429 | if ((par->fbdma & SH7760FB_DMA_MASK) != SH7760FB_DMA_MASK) { | |
430 | sh7760fb_free_mem(info); | |
431 | dev_err(info->dev, "kernel gave me memory at 0x%08lx, which is" | |
432 | "unusable for the LCDC\n", (unsigned long)par->fbdma); | |
433 | return -ENOMEM; | |
434 | } | |
435 | ||
436 | info->screen_base = fbmem; | |
437 | info->screen_size = vram; | |
438 | ||
439 | return 0; | |
440 | } | |
441 | ||
442 | static int __devinit sh7760fb_probe(struct platform_device *pdev) | |
443 | { | |
444 | struct fb_info *info; | |
445 | struct resource *res; | |
446 | struct sh7760fb_par *par; | |
447 | int ret; | |
448 | ||
449 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
450 | if (unlikely(res == NULL)) { | |
451 | dev_err(&pdev->dev, "invalid resource\n"); | |
452 | return -EINVAL; | |
453 | } | |
454 | ||
455 | info = framebuffer_alloc(sizeof(struct sh7760fb_par), &pdev->dev); | |
456 | if (!info) | |
457 | return -ENOMEM; | |
458 | ||
459 | par = info->par; | |
460 | par->dev = pdev; | |
461 | ||
462 | par->pd = pdev->dev.platform_data; | |
463 | if (!par->pd) { | |
464 | dev_dbg(info->dev, "no display setup data!\n"); | |
465 | ret = -ENODEV; | |
466 | goto out_fb; | |
467 | } | |
468 | ||
469 | par->ioarea = request_mem_region(res->start, | |
470 | (res->end - res->start), pdev->name); | |
471 | if (!par->ioarea) { | |
472 | dev_err(&pdev->dev, "mmio area busy\n"); | |
473 | ret = -EBUSY; | |
474 | goto out_fb; | |
475 | } | |
476 | ||
477 | par->base = ioremap_nocache(res->start, res->end - res->start + 1); | |
478 | if (!par->base) { | |
479 | dev_err(&pdev->dev, "cannot remap\n"); | |
480 | ret = -ENODEV; | |
481 | goto out_res; | |
482 | } | |
483 | ||
484 | iowrite16(0, par->base + LDINTR); /* disable vsync irq */ | |
485 | par->irq = platform_get_irq(pdev, 0); | |
486 | if (par->irq >= 0) { | |
487 | ret = request_irq(par->irq, sh7760fb_irq, 0, | |
488 | "sh7760-lcdc", &par->vsync); | |
489 | if (ret) { | |
490 | dev_err(&pdev->dev, "cannot grab IRQ\n"); | |
491 | par->irq = -ENXIO; | |
492 | } else | |
493 | disable_irq_nosync(par->irq); | |
494 | } | |
495 | ||
496 | fb_videomode_to_var(&info->var, par->pd->def_mode); | |
497 | ||
498 | ret = sh7760fb_alloc_mem(info); | |
499 | if (ret) { | |
500 | dev_dbg(info->dev, "framebuffer memory allocation failed!\n"); | |
501 | goto out_unmap; | |
502 | } | |
503 | ||
504 | info->pseudo_palette = par->pseudo_palette; | |
505 | ||
506 | /* fixup color register bitpositions. These are fixed by hardware */ | |
507 | info->var.red.offset = 11; | |
508 | info->var.red.length = 5; | |
509 | info->var.red.msb_right = 0; | |
510 | ||
511 | info->var.green.offset = 5; | |
512 | info->var.green.length = 6; | |
513 | info->var.green.msb_right = 0; | |
514 | ||
515 | info->var.blue.offset = 0; | |
516 | info->var.blue.length = 5; | |
517 | info->var.blue.msb_right = 0; | |
518 | ||
519 | info->var.transp.offset = 0; | |
520 | info->var.transp.length = 0; | |
521 | info->var.transp.msb_right = 0; | |
522 | ||
523 | /* set the DON2 bit now, before cmap allocation, as it will randomize | |
524 | * palette memory. | |
525 | */ | |
526 | iowrite16(LDCNTR_DON2, par->base + LDCNTR); | |
527 | info->fbops = &sh7760fb_ops; | |
528 | ||
529 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
530 | if (ret) { | |
531 | dev_dbg(info->dev, "Unable to allocate cmap memory\n"); | |
532 | goto out_mem; | |
533 | } | |
534 | ||
535 | ret = register_framebuffer(info); | |
536 | if (ret < 0) { | |
537 | dev_dbg(info->dev, "cannot register fb!\n"); | |
538 | goto out_cmap; | |
539 | } | |
540 | platform_set_drvdata(pdev, info); | |
541 | ||
542 | printk(KERN_INFO "%s: memory at phys 0x%08lx-0x%08lx, size %ld KiB\n", | |
543 | pdev->name, | |
544 | (unsigned long)par->fbdma, | |
545 | (unsigned long)(par->fbdma + info->screen_size - 1), | |
546 | info->screen_size >> 10); | |
547 | ||
548 | return 0; | |
549 | ||
550 | out_cmap: | |
551 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); | |
552 | fb_dealloc_cmap(&info->cmap); | |
553 | out_mem: | |
554 | sh7760fb_free_mem(info); | |
555 | out_unmap: | |
556 | if (par->irq >= 0) | |
557 | free_irq(par->irq, &par->vsync); | |
558 | iounmap(par->base); | |
559 | out_res: | |
560 | release_resource(par->ioarea); | |
561 | kfree(par->ioarea); | |
562 | out_fb: | |
563 | framebuffer_release(info); | |
564 | return ret; | |
565 | } | |
566 | ||
567 | static int __devexit sh7760fb_remove(struct platform_device *dev) | |
568 | { | |
569 | struct fb_info *info = platform_get_drvdata(dev); | |
570 | struct sh7760fb_par *par = info->par; | |
571 | ||
572 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); | |
573 | unregister_framebuffer(info); | |
574 | fb_dealloc_cmap(&info->cmap); | |
575 | sh7760fb_free_mem(info); | |
576 | if (par->irq >= 0) | |
577 | free_irq(par->irq, par); | |
578 | iounmap(par->base); | |
579 | release_resource(par->ioarea); | |
580 | kfree(par->ioarea); | |
581 | framebuffer_release(info); | |
582 | platform_set_drvdata(dev, NULL); | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | static struct platform_driver sh7760_lcdc_driver = { | |
588 | .driver = { | |
589 | .name = "sh7760-lcdc", | |
590 | .owner = THIS_MODULE, | |
591 | }, | |
592 | .probe = sh7760fb_probe, | |
593 | .remove = __devexit_p(sh7760fb_remove), | |
594 | }; | |
595 | ||
596 | static int __init sh7760fb_init(void) | |
597 | { | |
598 | return platform_driver_register(&sh7760_lcdc_driver); | |
599 | } | |
600 | ||
601 | static void __exit sh7760fb_exit(void) | |
602 | { | |
603 | platform_driver_unregister(&sh7760_lcdc_driver); | |
604 | } | |
605 | ||
606 | module_init(sh7760fb_init); | |
607 | module_exit(sh7760fb_exit); | |
608 | ||
609 | MODULE_AUTHOR("Nobuhiro Iwamatsu, Manuel Lauss"); | |
610 | MODULE_DESCRIPTION("FBdev for SH7760/63 integrated LCD Controller"); | |
611 | MODULE_LICENSE("GPL"); |