1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Framebuffer driver for TI OMAP boards |
4 | * |
5 | * Copyright (C) 2004 Nokia Corporation |
6 | * Author: Imre Deak <imre.deak@nokia.com> |
7 | * |
8 | * Acknowledgements: |
9 | * Alex McMains <aam@ridgerun.com> - Original driver |
10 | * Juha Yrjola <juha.yrjola@nokia.com> - Original driver and improvements |
11 | * Dirk Behme <dirk.behme@de.bosch.com> - changes for 2.6 kernel API |
12 | * Texas Instruments - H3 support |
13 | */ |
14 | #include <linux/platform_device.h> |
15 | #include <linux/mm.h> |
16 | #include <linux/slab.h> |
17 | #include <linux/uaccess.h> |
18 | #include <linux/module.h> |
19 | #include <linux/sysfs.h> |
20 | |
21 | #include <linux/omap-dma.h> |
22 | |
23 | #include <linux/soc/ti/omap1-soc.h> |
24 | #include "omapfb.h" |
25 | #include "lcdc.h" |
26 | |
27 | #define MODULE_NAME "omapfb" |
28 | |
29 | static unsigned int def_accel; |
30 | static unsigned long def_vram[OMAPFB_PLANE_NUM]; |
31 | static unsigned int def_vram_cnt; |
32 | static unsigned long def_vxres; |
33 | static unsigned long def_vyres; |
34 | static unsigned int def_rotate; |
35 | static unsigned int def_mirror; |
36 | |
37 | static bool manual_update = IS_BUILTIN(CONFIG_FB_OMAP_MANUAL_UPDATE); |
38 | |
39 | static struct platform_device *fbdev_pdev; |
40 | static struct lcd_panel *fbdev_panel; |
41 | static struct omapfb_device *omapfb_dev; |
42 | |
43 | struct caps_table_struct { |
44 | unsigned long flag; |
45 | const char *name; |
46 | }; |
47 | |
48 | static const struct caps_table_struct ctrl_caps[] = { |
49 | { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" }, |
50 | { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" }, |
51 | { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" }, |
52 | { OMAPFB_CAPS_PLANE_SCALE, "scale plane" }, |
53 | { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" }, |
54 | { OMAPFB_CAPS_WINDOW_SCALE, "scale window" }, |
55 | { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" }, |
56 | { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" }, |
57 | { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" }, |
58 | }; |
59 | |
60 | static const struct caps_table_struct color_caps[] = { |
61 | { 1 << OMAPFB_COLOR_RGB565, "RGB565" , }, |
62 | { 1 << OMAPFB_COLOR_YUV422, "YUV422" , }, |
63 | { 1 << OMAPFB_COLOR_YUV420, "YUV420" , }, |
64 | { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8" , }, |
65 | { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4" , }, |
66 | { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2" , }, |
67 | { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1" , }, |
68 | { 1 << OMAPFB_COLOR_RGB444, "RGB444" , }, |
69 | { 1 << OMAPFB_COLOR_YUY422, "YUY422" , }, |
70 | }; |
71 | |
72 | static void omapdss_release(struct device *dev) |
73 | { |
74 | } |
75 | |
76 | /* dummy device for clocks */ |
77 | static struct platform_device omapdss_device = { |
78 | .name = "omapdss_dss" , |
79 | .id = -1, |
80 | .dev = { |
81 | .release = omapdss_release, |
82 | }, |
83 | }; |
84 | |
85 | /* |
86 | * --------------------------------------------------------------------------- |
87 | * LCD panel |
88 | * --------------------------------------------------------------------------- |
89 | */ |
90 | extern struct lcd_ctrl hwa742_ctrl; |
91 | |
92 | static const struct lcd_ctrl *ctrls[] = { |
93 | &omap1_int_ctrl, |
94 | |
95 | #ifdef CONFIG_FB_OMAP_LCDC_HWA742 |
96 | &hwa742_ctrl, |
97 | #endif |
98 | }; |
99 | |
100 | #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL |
101 | extern struct lcd_ctrl_extif omap1_ext_if; |
102 | #endif |
103 | |
104 | static void omapfb_rqueue_lock(struct omapfb_device *fbdev) |
105 | { |
106 | mutex_lock(&fbdev->rqueue_mutex); |
107 | } |
108 | |
109 | static void omapfb_rqueue_unlock(struct omapfb_device *fbdev) |
110 | { |
111 | mutex_unlock(lock: &fbdev->rqueue_mutex); |
112 | } |
113 | |
114 | /* |
115 | * --------------------------------------------------------------------------- |
116 | * LCD controller and LCD DMA |
117 | * --------------------------------------------------------------------------- |
118 | */ |
119 | /* |
120 | * Allocate resources needed for LCD controller and LCD DMA operations. Video |
121 | * memory is allocated from system memory according to the virtual display |
122 | * size, except if a bigger memory size is specified explicitly as a kernel |
123 | * parameter. |
124 | */ |
125 | static int ctrl_init(struct omapfb_device *fbdev) |
126 | { |
127 | int r; |
128 | int i; |
129 | |
130 | /* kernel/module vram parameters override boot tags/board config */ |
131 | if (def_vram_cnt) { |
132 | for (i = 0; i < def_vram_cnt; i++) |
133 | fbdev->mem_desc.region[i].size = |
134 | PAGE_ALIGN(def_vram[i]); |
135 | fbdev->mem_desc.region_cnt = i; |
136 | } |
137 | |
138 | if (!fbdev->mem_desc.region_cnt) { |
139 | struct lcd_panel *panel = fbdev->panel; |
140 | int def_size; |
141 | int bpp = panel->bpp; |
142 | |
143 | /* 12 bpp is packed in 16 bits */ |
144 | if (bpp == 12) |
145 | bpp = 16; |
146 | def_size = def_vxres * def_vyres * bpp / 8; |
147 | fbdev->mem_desc.region_cnt = 1; |
148 | fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size); |
149 | } |
150 | r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc); |
151 | if (r < 0) { |
152 | dev_err(fbdev->dev, "controller initialization failed (%d)\n" , |
153 | r); |
154 | return r; |
155 | } |
156 | |
157 | #ifdef DEBUG |
158 | for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { |
159 | dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n" , |
160 | i, |
161 | fbdev->mem_desc.region[i].paddr, |
162 | fbdev->mem_desc.region[i].vaddr, |
163 | fbdev->mem_desc.region[i].size); |
164 | } |
165 | #endif |
166 | return 0; |
167 | } |
168 | |
169 | static void ctrl_cleanup(struct omapfb_device *fbdev) |
170 | { |
171 | fbdev->ctrl->cleanup(); |
172 | } |
173 | |
174 | /* Must be called with fbdev->rqueue_mutex held. */ |
175 | static int ctrl_change_mode(struct fb_info *fbi) |
176 | { |
177 | int r; |
178 | unsigned long offset; |
179 | struct omapfb_plane_struct *plane = fbi->par; |
180 | struct omapfb_device *fbdev = plane->fbdev; |
181 | struct fb_var_screeninfo *var = &fbi->var; |
182 | |
183 | offset = var->yoffset * fbi->fix.line_length + |
184 | var->xoffset * var->bits_per_pixel / 8; |
185 | |
186 | if (fbdev->ctrl->sync) |
187 | fbdev->ctrl->sync(); |
188 | r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out, |
189 | offset, var->xres_virtual, |
190 | plane->info.pos_x, plane->info.pos_y, |
191 | var->xres, var->yres, plane->color_mode); |
192 | if (r < 0) |
193 | return r; |
194 | |
195 | if (fbdev->ctrl->set_rotate != NULL) { |
196 | r = fbdev->ctrl->set_rotate(var->rotate); |
197 | if (r < 0) |
198 | return r; |
199 | } |
200 | |
201 | if (fbdev->ctrl->set_scale != NULL) |
202 | r = fbdev->ctrl->set_scale(plane->idx, |
203 | var->xres, var->yres, |
204 | plane->info.out_width, |
205 | plane->info.out_height); |
206 | |
207 | return r; |
208 | } |
209 | |
210 | /* |
211 | * --------------------------------------------------------------------------- |
212 | * fbdev framework callbacks and the ioctl interface |
213 | * --------------------------------------------------------------------------- |
214 | */ |
215 | /* Called each time the omapfb device is opened */ |
216 | static int omapfb_open(struct fb_info *info, int user) |
217 | { |
218 | return 0; |
219 | } |
220 | |
221 | static void omapfb_sync(struct fb_info *info); |
222 | |
223 | /* Called when the omapfb device is closed. We make sure that any pending |
224 | * gfx DMA operations are ended, before we return. */ |
225 | static int omapfb_release(struct fb_info *info, int user) |
226 | { |
227 | omapfb_sync(info); |
228 | return 0; |
229 | } |
230 | |
231 | /* Store a single color palette entry into a pseudo palette or the hardware |
232 | * palette if one is available. For now we support only 16bpp and thus store |
233 | * the entry only to the pseudo palette. |
234 | */ |
235 | static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green, |
236 | u_int blue, u_int transp, int update_hw_pal) |
237 | { |
238 | struct omapfb_plane_struct *plane = info->par; |
239 | struct omapfb_device *fbdev = plane->fbdev; |
240 | struct fb_var_screeninfo *var = &info->var; |
241 | int r = 0; |
242 | |
243 | switch (plane->color_mode) { |
244 | case OMAPFB_COLOR_YUV422: |
245 | case OMAPFB_COLOR_YUV420: |
246 | case OMAPFB_COLOR_YUY422: |
247 | r = -EINVAL; |
248 | break; |
249 | case OMAPFB_COLOR_CLUT_8BPP: |
250 | case OMAPFB_COLOR_CLUT_4BPP: |
251 | case OMAPFB_COLOR_CLUT_2BPP: |
252 | case OMAPFB_COLOR_CLUT_1BPP: |
253 | if (fbdev->ctrl->setcolreg) |
254 | r = fbdev->ctrl->setcolreg(regno, red, green, blue, |
255 | transp, update_hw_pal); |
256 | fallthrough; |
257 | case OMAPFB_COLOR_RGB565: |
258 | case OMAPFB_COLOR_RGB444: |
259 | if (r != 0) |
260 | break; |
261 | |
262 | if (regno < 16) { |
263 | u16 pal; |
264 | pal = ((red >> (16 - var->red.length)) << |
265 | var->red.offset) | |
266 | ((green >> (16 - var->green.length)) << |
267 | var->green.offset) | |
268 | (blue >> (16 - var->blue.length)); |
269 | ((u32 *)(info->pseudo_palette))[regno] = pal; |
270 | } |
271 | break; |
272 | default: |
273 | BUG(); |
274 | } |
275 | return r; |
276 | } |
277 | |
278 | static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
279 | u_int transp, struct fb_info *info) |
280 | { |
281 | return _setcolreg(info, regno, red, green, blue, transp, update_hw_pal: 1); |
282 | } |
283 | |
284 | static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
285 | { |
286 | int count, index, r; |
287 | u16 *red, *green, *blue, *transp; |
288 | u16 trans = 0xffff; |
289 | |
290 | red = cmap->red; |
291 | green = cmap->green; |
292 | blue = cmap->blue; |
293 | transp = cmap->transp; |
294 | index = cmap->start; |
295 | |
296 | for (count = 0; count < cmap->len; count++) { |
297 | if (transp) |
298 | trans = *transp++; |
299 | r = _setcolreg(info, regno: index++, red: *red++, green: *green++, blue: *blue++, transp: trans, |
300 | update_hw_pal: count == cmap->len - 1); |
301 | if (r != 0) |
302 | return r; |
303 | } |
304 | |
305 | return 0; |
306 | } |
307 | |
308 | static int omapfb_update_full_screen(struct fb_info *fbi); |
309 | |
310 | static int omapfb_blank(int blank, struct fb_info *fbi) |
311 | { |
312 | struct omapfb_plane_struct *plane = fbi->par; |
313 | struct omapfb_device *fbdev = plane->fbdev; |
314 | int do_update = 0; |
315 | int r = 0; |
316 | |
317 | omapfb_rqueue_lock(fbdev); |
318 | switch (blank) { |
319 | case FB_BLANK_UNBLANK: |
320 | if (fbdev->state == OMAPFB_SUSPENDED) { |
321 | if (fbdev->ctrl->resume) |
322 | fbdev->ctrl->resume(); |
323 | if (fbdev->panel->enable) |
324 | fbdev->panel->enable(fbdev->panel); |
325 | fbdev->state = OMAPFB_ACTIVE; |
326 | if (fbdev->ctrl->get_update_mode() == |
327 | OMAPFB_MANUAL_UPDATE) |
328 | do_update = 1; |
329 | } |
330 | break; |
331 | case FB_BLANK_POWERDOWN: |
332 | if (fbdev->state == OMAPFB_ACTIVE) { |
333 | if (fbdev->panel->disable) |
334 | fbdev->panel->disable(fbdev->panel); |
335 | if (fbdev->ctrl->suspend) |
336 | fbdev->ctrl->suspend(); |
337 | fbdev->state = OMAPFB_SUSPENDED; |
338 | } |
339 | break; |
340 | default: |
341 | r = -EINVAL; |
342 | } |
343 | omapfb_rqueue_unlock(fbdev); |
344 | |
345 | if (r == 0 && do_update) |
346 | r = omapfb_update_full_screen(fbi); |
347 | |
348 | return r; |
349 | } |
350 | |
351 | static void omapfb_sync(struct fb_info *fbi) |
352 | { |
353 | struct omapfb_plane_struct *plane = fbi->par; |
354 | struct omapfb_device *fbdev = plane->fbdev; |
355 | |
356 | omapfb_rqueue_lock(fbdev); |
357 | if (fbdev->ctrl->sync) |
358 | fbdev->ctrl->sync(); |
359 | omapfb_rqueue_unlock(fbdev); |
360 | } |
361 | |
362 | /* |
363 | * Set fb_info.fix fields and also updates fbdev. |
364 | * When calling this fb_info.var must be set up already. |
365 | */ |
366 | static void set_fb_fix(struct fb_info *fbi, int from_init) |
367 | { |
368 | struct fb_fix_screeninfo *fix = &fbi->fix; |
369 | struct fb_var_screeninfo *var = &fbi->var; |
370 | struct omapfb_plane_struct *plane = fbi->par; |
371 | struct omapfb_mem_region *rg; |
372 | int bpp; |
373 | |
374 | rg = &plane->fbdev->mem_desc.region[plane->idx]; |
375 | fbi->screen_base = rg->vaddr; |
376 | |
377 | if (!from_init) { |
378 | mutex_lock(&fbi->mm_lock); |
379 | fix->smem_start = rg->paddr; |
380 | fix->smem_len = rg->size; |
381 | mutex_unlock(lock: &fbi->mm_lock); |
382 | } else { |
383 | fix->smem_start = rg->paddr; |
384 | fix->smem_len = rg->size; |
385 | } |
386 | |
387 | fix->type = FB_TYPE_PACKED_PIXELS; |
388 | bpp = var->bits_per_pixel; |
389 | if (var->nonstd) |
390 | fix->visual = FB_VISUAL_PSEUDOCOLOR; |
391 | else switch (var->bits_per_pixel) { |
392 | case 16: |
393 | case 12: |
394 | fix->visual = FB_VISUAL_TRUECOLOR; |
395 | /* 12bpp is stored in 16 bits */ |
396 | bpp = 16; |
397 | break; |
398 | case 1: |
399 | case 2: |
400 | case 4: |
401 | case 8: |
402 | fix->visual = FB_VISUAL_PSEUDOCOLOR; |
403 | break; |
404 | } |
405 | fix->accel = FB_ACCEL_OMAP1610; |
406 | fix->line_length = var->xres_virtual * bpp / 8; |
407 | } |
408 | |
409 | static int set_color_mode(struct omapfb_plane_struct *plane, |
410 | struct fb_var_screeninfo *var) |
411 | { |
412 | switch (var->nonstd) { |
413 | case 0: |
414 | break; |
415 | case OMAPFB_COLOR_YUV422: |
416 | var->bits_per_pixel = 16; |
417 | plane->color_mode = var->nonstd; |
418 | return 0; |
419 | case OMAPFB_COLOR_YUV420: |
420 | var->bits_per_pixel = 12; |
421 | plane->color_mode = var->nonstd; |
422 | return 0; |
423 | case OMAPFB_COLOR_YUY422: |
424 | var->bits_per_pixel = 16; |
425 | plane->color_mode = var->nonstd; |
426 | return 0; |
427 | default: |
428 | return -EINVAL; |
429 | } |
430 | |
431 | switch (var->bits_per_pixel) { |
432 | case 1: |
433 | plane->color_mode = OMAPFB_COLOR_CLUT_1BPP; |
434 | return 0; |
435 | case 2: |
436 | plane->color_mode = OMAPFB_COLOR_CLUT_2BPP; |
437 | return 0; |
438 | case 4: |
439 | plane->color_mode = OMAPFB_COLOR_CLUT_4BPP; |
440 | return 0; |
441 | case 8: |
442 | plane->color_mode = OMAPFB_COLOR_CLUT_8BPP; |
443 | return 0; |
444 | case 12: |
445 | var->bits_per_pixel = 16; |
446 | fallthrough; |
447 | case 16: |
448 | if (plane->fbdev->panel->bpp == 12) |
449 | plane->color_mode = OMAPFB_COLOR_RGB444; |
450 | else |
451 | plane->color_mode = OMAPFB_COLOR_RGB565; |
452 | return 0; |
453 | default: |
454 | return -EINVAL; |
455 | } |
456 | } |
457 | |
458 | /* |
459 | * Check the values in var against our capabilities and in case of out of |
460 | * bound values try to adjust them. |
461 | */ |
462 | static int set_fb_var(struct fb_info *fbi, |
463 | struct fb_var_screeninfo *var) |
464 | { |
465 | int bpp; |
466 | unsigned long max_frame_size; |
467 | unsigned long line_size; |
468 | int xres_min, xres_max; |
469 | int yres_min, yres_max; |
470 | struct omapfb_plane_struct *plane = fbi->par; |
471 | struct omapfb_device *fbdev = plane->fbdev; |
472 | struct lcd_panel *panel = fbdev->panel; |
473 | |
474 | if (set_color_mode(plane, var) < 0) |
475 | return -EINVAL; |
476 | |
477 | bpp = var->bits_per_pixel; |
478 | if (plane->color_mode == OMAPFB_COLOR_RGB444) |
479 | bpp = 16; |
480 | |
481 | switch (var->rotate) { |
482 | case 0: |
483 | case 180: |
484 | xres_min = OMAPFB_PLANE_XRES_MIN; |
485 | xres_max = panel->x_res; |
486 | yres_min = OMAPFB_PLANE_YRES_MIN; |
487 | yres_max = panel->y_res; |
488 | if (cpu_is_omap15xx()) { |
489 | var->xres = panel->x_res; |
490 | var->yres = panel->y_res; |
491 | } |
492 | break; |
493 | case 90: |
494 | case 270: |
495 | xres_min = OMAPFB_PLANE_YRES_MIN; |
496 | xres_max = panel->y_res; |
497 | yres_min = OMAPFB_PLANE_XRES_MIN; |
498 | yres_max = panel->x_res; |
499 | if (cpu_is_omap15xx()) { |
500 | var->xres = panel->y_res; |
501 | var->yres = panel->x_res; |
502 | } |
503 | break; |
504 | default: |
505 | return -EINVAL; |
506 | } |
507 | |
508 | if (var->xres < xres_min) |
509 | var->xres = xres_min; |
510 | if (var->yres < yres_min) |
511 | var->yres = yres_min; |
512 | if (var->xres > xres_max) |
513 | var->xres = xres_max; |
514 | if (var->yres > yres_max) |
515 | var->yres = yres_max; |
516 | |
517 | if (var->xres_virtual < var->xres) |
518 | var->xres_virtual = var->xres; |
519 | if (var->yres_virtual < var->yres) |
520 | var->yres_virtual = var->yres; |
521 | max_frame_size = fbdev->mem_desc.region[plane->idx].size; |
522 | line_size = var->xres_virtual * bpp / 8; |
523 | if (line_size * var->yres_virtual > max_frame_size) { |
524 | /* Try to keep yres_virtual first */ |
525 | line_size = max_frame_size / var->yres_virtual; |
526 | var->xres_virtual = line_size * 8 / bpp; |
527 | if (var->xres_virtual < var->xres) { |
528 | /* Still doesn't fit. Shrink yres_virtual too */ |
529 | var->xres_virtual = var->xres; |
530 | line_size = var->xres * bpp / 8; |
531 | var->yres_virtual = max_frame_size / line_size; |
532 | } |
533 | /* Recheck this, as the virtual size changed. */ |
534 | if (var->xres_virtual < var->xres) |
535 | var->xres = var->xres_virtual; |
536 | if (var->yres_virtual < var->yres) |
537 | var->yres = var->yres_virtual; |
538 | if (var->xres < xres_min || var->yres < yres_min) |
539 | return -EINVAL; |
540 | } |
541 | if (var->xres + var->xoffset > var->xres_virtual) |
542 | var->xoffset = var->xres_virtual - var->xres; |
543 | if (var->yres + var->yoffset > var->yres_virtual) |
544 | var->yoffset = var->yres_virtual - var->yres; |
545 | |
546 | if (plane->color_mode == OMAPFB_COLOR_RGB444) { |
547 | var->red.offset = 8; |
548 | var->red.length = 4; |
549 | var->red.msb_right = 0; |
550 | var->green.offset = 4; |
551 | var->green.length = 4; |
552 | var->green.msb_right = 0; |
553 | var->blue.offset = 0; |
554 | var->blue.length = 4; |
555 | var->blue.msb_right = 0; |
556 | } else { |
557 | var->red.offset = 11; |
558 | var->red.length = 5; |
559 | var->red.msb_right = 0; |
560 | var->green.offset = 5; |
561 | var->green.length = 6; |
562 | var->green.msb_right = 0; |
563 | var->blue.offset = 0; |
564 | var->blue.length = 5; |
565 | var->blue.msb_right = 0; |
566 | } |
567 | |
568 | var->height = -1; |
569 | var->width = -1; |
570 | var->grayscale = 0; |
571 | |
572 | /* pixclock in ps, the rest in pixclock */ |
573 | var->pixclock = 10000000 / (panel->pixel_clock / 100); |
574 | var->left_margin = panel->hfp; |
575 | var->right_margin = panel->hbp; |
576 | var->upper_margin = panel->vfp; |
577 | var->lower_margin = panel->vbp; |
578 | var->hsync_len = panel->hsw; |
579 | var->vsync_len = panel->vsw; |
580 | |
581 | /* TODO: get these from panel->config */ |
582 | var->vmode = FB_VMODE_NONINTERLACED; |
583 | var->sync = 0; |
584 | |
585 | return 0; |
586 | } |
587 | |
588 | |
589 | /* |
590 | * Set new x,y offsets in the virtual display for the visible area and switch |
591 | * to the new mode. |
592 | */ |
593 | static int omapfb_pan_display(struct fb_var_screeninfo *var, |
594 | struct fb_info *fbi) |
595 | { |
596 | struct omapfb_plane_struct *plane = fbi->par; |
597 | struct omapfb_device *fbdev = plane->fbdev; |
598 | int r = 0; |
599 | |
600 | omapfb_rqueue_lock(fbdev); |
601 | if (var->xoffset != fbi->var.xoffset || |
602 | var->yoffset != fbi->var.yoffset) { |
603 | struct fb_var_screeninfo *new_var = &fbdev->new_var; |
604 | |
605 | memcpy(new_var, &fbi->var, sizeof(*new_var)); |
606 | new_var->xoffset = var->xoffset; |
607 | new_var->yoffset = var->yoffset; |
608 | if (set_fb_var(fbi, var: new_var)) |
609 | r = -EINVAL; |
610 | else { |
611 | memcpy(&fbi->var, new_var, sizeof(*new_var)); |
612 | ctrl_change_mode(fbi); |
613 | } |
614 | } |
615 | omapfb_rqueue_unlock(fbdev); |
616 | |
617 | return r; |
618 | } |
619 | |
620 | /* Set mirror to vertical axis and switch to the new mode. */ |
621 | static int omapfb_mirror(struct fb_info *fbi, int mirror) |
622 | { |
623 | struct omapfb_plane_struct *plane = fbi->par; |
624 | struct omapfb_device *fbdev = plane->fbdev; |
625 | int r = 0; |
626 | |
627 | omapfb_rqueue_lock(fbdev); |
628 | mirror = mirror ? 1 : 0; |
629 | if (cpu_is_omap15xx()) |
630 | r = -EINVAL; |
631 | else if (mirror != plane->info.mirror) { |
632 | plane->info.mirror = mirror; |
633 | r = ctrl_change_mode(fbi); |
634 | } |
635 | omapfb_rqueue_unlock(fbdev); |
636 | |
637 | return r; |
638 | } |
639 | |
640 | /* |
641 | * Check values in var, try to adjust them in case of out of bound values if |
642 | * possible, or return error. |
643 | */ |
644 | static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) |
645 | { |
646 | struct omapfb_plane_struct *plane = fbi->par; |
647 | struct omapfb_device *fbdev = plane->fbdev; |
648 | int r; |
649 | |
650 | omapfb_rqueue_lock(fbdev); |
651 | if (fbdev->ctrl->sync != NULL) |
652 | fbdev->ctrl->sync(); |
653 | r = set_fb_var(fbi, var); |
654 | omapfb_rqueue_unlock(fbdev); |
655 | |
656 | return r; |
657 | } |
658 | |
659 | /* |
660 | * Switch to a new mode. The parameters for it has been check already by |
661 | * omapfb_check_var. |
662 | */ |
663 | static int omapfb_set_par(struct fb_info *fbi) |
664 | { |
665 | struct omapfb_plane_struct *plane = fbi->par; |
666 | struct omapfb_device *fbdev = plane->fbdev; |
667 | int r = 0; |
668 | |
669 | omapfb_rqueue_lock(fbdev); |
670 | set_fb_fix(fbi, from_init: 0); |
671 | r = ctrl_change_mode(fbi); |
672 | omapfb_rqueue_unlock(fbdev); |
673 | |
674 | return r; |
675 | } |
676 | |
677 | static int omapfb_update_window_async(struct fb_info *fbi, |
678 | struct omapfb_update_window *win, |
679 | void (*callback)(void *), |
680 | void *callback_data) |
681 | { |
682 | int xres, yres; |
683 | struct omapfb_plane_struct *plane = fbi->par; |
684 | struct omapfb_device *fbdev = plane->fbdev; |
685 | struct fb_var_screeninfo *var = &fbi->var; |
686 | |
687 | switch (var->rotate) { |
688 | case 0: |
689 | case 180: |
690 | xres = fbdev->panel->x_res; |
691 | yres = fbdev->panel->y_res; |
692 | break; |
693 | case 90: |
694 | case 270: |
695 | xres = fbdev->panel->y_res; |
696 | yres = fbdev->panel->x_res; |
697 | break; |
698 | default: |
699 | return -EINVAL; |
700 | } |
701 | |
702 | if (win->x >= xres || win->y >= yres || |
703 | win->out_x > xres || win->out_y > yres) |
704 | return -EINVAL; |
705 | |
706 | if (!fbdev->ctrl->update_window || |
707 | fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) |
708 | return -ENODEV; |
709 | |
710 | if (win->x + win->width > xres) |
711 | win->width = xres - win->x; |
712 | if (win->y + win->height > yres) |
713 | win->height = yres - win->y; |
714 | if (win->out_x + win->out_width > xres) |
715 | win->out_width = xres - win->out_x; |
716 | if (win->out_y + win->out_height > yres) |
717 | win->out_height = yres - win->out_y; |
718 | if (!win->width || !win->height || !win->out_width || !win->out_height) |
719 | return 0; |
720 | |
721 | return fbdev->ctrl->update_window(fbi, win, callback, callback_data); |
722 | } |
723 | |
724 | static int omapfb_update_win(struct fb_info *fbi, |
725 | struct omapfb_update_window *win) |
726 | { |
727 | struct omapfb_plane_struct *plane = fbi->par; |
728 | int ret; |
729 | |
730 | omapfb_rqueue_lock(fbdev: plane->fbdev); |
731 | ret = omapfb_update_window_async(fbi, win, NULL, NULL); |
732 | omapfb_rqueue_unlock(fbdev: plane->fbdev); |
733 | |
734 | return ret; |
735 | } |
736 | |
737 | static int omapfb_update_full_screen(struct fb_info *fbi) |
738 | { |
739 | struct omapfb_plane_struct *plane = fbi->par; |
740 | struct omapfb_device *fbdev = plane->fbdev; |
741 | struct omapfb_update_window win; |
742 | int r; |
743 | |
744 | if (!fbdev->ctrl->update_window || |
745 | fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) |
746 | return -ENODEV; |
747 | |
748 | win.x = 0; |
749 | win.y = 0; |
750 | win.width = fbi->var.xres; |
751 | win.height = fbi->var.yres; |
752 | win.out_x = 0; |
753 | win.out_y = 0; |
754 | win.out_width = fbi->var.xres; |
755 | win.out_height = fbi->var.yres; |
756 | win.format = 0; |
757 | |
758 | omapfb_rqueue_lock(fbdev); |
759 | r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL); |
760 | omapfb_rqueue_unlock(fbdev); |
761 | |
762 | return r; |
763 | } |
764 | |
765 | static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) |
766 | { |
767 | struct omapfb_plane_struct *plane = fbi->par; |
768 | struct omapfb_device *fbdev = plane->fbdev; |
769 | struct lcd_panel *panel = fbdev->panel; |
770 | struct omapfb_plane_info old_info; |
771 | int r = 0; |
772 | |
773 | if (pi->pos_x + pi->out_width > panel->x_res || |
774 | pi->pos_y + pi->out_height > panel->y_res) |
775 | return -EINVAL; |
776 | |
777 | omapfb_rqueue_lock(fbdev); |
778 | if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) { |
779 | /* |
780 | * This plane's memory was freed, can't enable it |
781 | * until it's reallocated. |
782 | */ |
783 | r = -EINVAL; |
784 | goto out; |
785 | } |
786 | old_info = plane->info; |
787 | plane->info = *pi; |
788 | if (pi->enabled) { |
789 | r = ctrl_change_mode(fbi); |
790 | if (r < 0) { |
791 | plane->info = old_info; |
792 | goto out; |
793 | } |
794 | } |
795 | r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled); |
796 | if (r < 0) { |
797 | plane->info = old_info; |
798 | goto out; |
799 | } |
800 | out: |
801 | omapfb_rqueue_unlock(fbdev); |
802 | return r; |
803 | } |
804 | |
805 | static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) |
806 | { |
807 | struct omapfb_plane_struct *plane = fbi->par; |
808 | |
809 | *pi = plane->info; |
810 | return 0; |
811 | } |
812 | |
813 | static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) |
814 | { |
815 | struct omapfb_plane_struct *plane = fbi->par; |
816 | struct omapfb_device *fbdev = plane->fbdev; |
817 | struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx]; |
818 | size_t size; |
819 | int r = 0; |
820 | |
821 | if (fbdev->ctrl->setup_mem == NULL) |
822 | return -ENODEV; |
823 | if (mi->type != OMAPFB_MEMTYPE_SDRAM) |
824 | return -EINVAL; |
825 | |
826 | size = PAGE_ALIGN(mi->size); |
827 | omapfb_rqueue_lock(fbdev); |
828 | if (plane->info.enabled) { |
829 | r = -EBUSY; |
830 | goto out; |
831 | } |
832 | if (rg->size != size || rg->type != mi->type) { |
833 | struct fb_var_screeninfo *new_var = &fbdev->new_var; |
834 | unsigned long old_size = rg->size; |
835 | u8 old_type = rg->type; |
836 | unsigned long paddr; |
837 | |
838 | rg->size = size; |
839 | rg->type = mi->type; |
840 | /* |
841 | * size == 0 is a special case, for which we |
842 | * don't check / adjust the screen parameters. |
843 | * This isn't a problem since the plane can't |
844 | * be reenabled unless its size is > 0. |
845 | */ |
846 | if (old_size != size && size) { |
847 | if (size) { |
848 | memcpy(new_var, &fbi->var, sizeof(*new_var)); |
849 | r = set_fb_var(fbi, var: new_var); |
850 | if (r < 0) |
851 | goto out; |
852 | } |
853 | } |
854 | |
855 | if (fbdev->ctrl->sync) |
856 | fbdev->ctrl->sync(); |
857 | r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr); |
858 | if (r < 0) { |
859 | /* Revert changes. */ |
860 | rg->size = old_size; |
861 | rg->type = old_type; |
862 | goto out; |
863 | } |
864 | rg->paddr = paddr; |
865 | |
866 | if (old_size != size) { |
867 | if (size) { |
868 | memcpy(&fbi->var, new_var, sizeof(fbi->var)); |
869 | set_fb_fix(fbi, from_init: 0); |
870 | } else { |
871 | /* |
872 | * Set these explicitly to indicate that the |
873 | * plane memory is dealloce'd, the other |
874 | * screen parameters in var / fix are invalid. |
875 | */ |
876 | mutex_lock(&fbi->mm_lock); |
877 | fbi->fix.smem_start = 0; |
878 | fbi->fix.smem_len = 0; |
879 | mutex_unlock(lock: &fbi->mm_lock); |
880 | } |
881 | } |
882 | } |
883 | out: |
884 | omapfb_rqueue_unlock(fbdev); |
885 | |
886 | return r; |
887 | } |
888 | |
889 | static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) |
890 | { |
891 | struct omapfb_plane_struct *plane = fbi->par; |
892 | struct omapfb_device *fbdev = plane->fbdev; |
893 | struct omapfb_mem_region *rg; |
894 | |
895 | rg = &fbdev->mem_desc.region[plane->idx]; |
896 | memset(mi, 0, sizeof(*mi)); |
897 | mi->size = rg->size; |
898 | mi->type = rg->type; |
899 | |
900 | return 0; |
901 | } |
902 | |
903 | static int omapfb_set_color_key(struct omapfb_device *fbdev, |
904 | struct omapfb_color_key *ck) |
905 | { |
906 | int r; |
907 | |
908 | if (!fbdev->ctrl->set_color_key) |
909 | return -ENODEV; |
910 | |
911 | omapfb_rqueue_lock(fbdev); |
912 | r = fbdev->ctrl->set_color_key(ck); |
913 | omapfb_rqueue_unlock(fbdev); |
914 | |
915 | return r; |
916 | } |
917 | |
918 | static int omapfb_get_color_key(struct omapfb_device *fbdev, |
919 | struct omapfb_color_key *ck) |
920 | { |
921 | int r; |
922 | |
923 | if (!fbdev->ctrl->get_color_key) |
924 | return -ENODEV; |
925 | |
926 | omapfb_rqueue_lock(fbdev); |
927 | r = fbdev->ctrl->get_color_key(ck); |
928 | omapfb_rqueue_unlock(fbdev); |
929 | |
930 | return r; |
931 | } |
932 | |
933 | static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM]; |
934 | static int notifier_inited; |
935 | |
936 | static void omapfb_init_notifier(void) |
937 | { |
938 | int i; |
939 | |
940 | for (i = 0; i < OMAPFB_PLANE_NUM; i++) |
941 | BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]); |
942 | } |
943 | |
944 | int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb, |
945 | omapfb_notifier_callback_t callback, |
946 | void *callback_data) |
947 | { |
948 | int r; |
949 | |
950 | if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM) |
951 | return -EINVAL; |
952 | |
953 | if (!notifier_inited) { |
954 | omapfb_init_notifier(); |
955 | notifier_inited = 1; |
956 | } |
957 | |
958 | omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *, |
959 | unsigned long, void *))callback; |
960 | omapfb_nb->data = callback_data; |
961 | r = blocking_notifier_chain_register( |
962 | nh: &omapfb_client_list[omapfb_nb->plane_idx], |
963 | nb: &omapfb_nb->nb); |
964 | if (r) |
965 | return r; |
966 | if (omapfb_dev != NULL && |
967 | omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) { |
968 | omapfb_dev->ctrl->bind_client(omapfb_nb); |
969 | } |
970 | |
971 | return 0; |
972 | } |
973 | EXPORT_SYMBOL(omapfb_register_client); |
974 | |
975 | int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb) |
976 | { |
977 | return blocking_notifier_chain_unregister( |
978 | nh: &omapfb_client_list[omapfb_nb->plane_idx], nb: &omapfb_nb->nb); |
979 | } |
980 | EXPORT_SYMBOL(omapfb_unregister_client); |
981 | |
982 | void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event) |
983 | { |
984 | int i; |
985 | |
986 | if (!notifier_inited) |
987 | /* no client registered yet */ |
988 | return; |
989 | |
990 | for (i = 0; i < OMAPFB_PLANE_NUM; i++) |
991 | blocking_notifier_call_chain(nh: &omapfb_client_list[i], val: event, |
992 | v: fbdev->fb_info[i]); |
993 | } |
994 | EXPORT_SYMBOL(omapfb_notify_clients); |
995 | |
996 | static int omapfb_set_update_mode(struct omapfb_device *fbdev, |
997 | enum omapfb_update_mode mode) |
998 | { |
999 | int r; |
1000 | |
1001 | omapfb_rqueue_lock(fbdev); |
1002 | r = fbdev->ctrl->set_update_mode(mode); |
1003 | omapfb_rqueue_unlock(fbdev); |
1004 | |
1005 | return r; |
1006 | } |
1007 | |
1008 | static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev) |
1009 | { |
1010 | int r; |
1011 | |
1012 | omapfb_rqueue_lock(fbdev); |
1013 | r = fbdev->ctrl->get_update_mode(); |
1014 | omapfb_rqueue_unlock(fbdev); |
1015 | |
1016 | return r; |
1017 | } |
1018 | |
1019 | static void omapfb_get_caps(struct omapfb_device *fbdev, int plane, |
1020 | struct omapfb_caps *caps) |
1021 | { |
1022 | memset(caps, 0, sizeof(*caps)); |
1023 | fbdev->ctrl->get_caps(plane, caps); |
1024 | if (fbdev->panel->get_caps) |
1025 | caps->ctrl |= fbdev->panel->get_caps(fbdev->panel); |
1026 | } |
1027 | |
1028 | /* For lcd testing */ |
1029 | void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval) |
1030 | { |
1031 | omapfb_rqueue_lock(fbdev); |
1032 | *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval; |
1033 | if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) { |
1034 | struct omapfb_update_window win; |
1035 | |
1036 | memset(&win, 0, sizeof(win)); |
1037 | win.width = 2; |
1038 | win.height = 2; |
1039 | win.out_width = 2; |
1040 | win.out_height = 2; |
1041 | fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL); |
1042 | } |
1043 | omapfb_rqueue_unlock(fbdev); |
1044 | } |
1045 | EXPORT_SYMBOL(omapfb_write_first_pixel); |
1046 | |
1047 | /* |
1048 | * Ioctl interface. Part of the kernel mode frame buffer API is duplicated |
1049 | * here to be accessible by user mode code. |
1050 | */ |
1051 | static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, |
1052 | unsigned long arg) |
1053 | { |
1054 | struct omapfb_plane_struct *plane = fbi->par; |
1055 | struct omapfb_device *fbdev = plane->fbdev; |
1056 | const struct fb_ops *ops = fbi->fbops; |
1057 | union { |
1058 | struct omapfb_update_window update_window; |
1059 | struct omapfb_plane_info plane_info; |
1060 | struct omapfb_mem_info mem_info; |
1061 | struct omapfb_color_key color_key; |
1062 | enum omapfb_update_mode update_mode; |
1063 | struct omapfb_caps caps; |
1064 | unsigned int mirror; |
1065 | int plane_out; |
1066 | int enable_plane; |
1067 | } p; |
1068 | int r = 0; |
1069 | |
1070 | BUG_ON(!ops); |
1071 | switch (cmd) { |
1072 | case OMAPFB_MIRROR: |
1073 | if (get_user(p.mirror, (int __user *)arg)) |
1074 | r = -EFAULT; |
1075 | else |
1076 | omapfb_mirror(fbi, mirror: p.mirror); |
1077 | break; |
1078 | case OMAPFB_SYNC_GFX: |
1079 | omapfb_sync(fbi); |
1080 | break; |
1081 | case OMAPFB_VSYNC: |
1082 | break; |
1083 | case OMAPFB_SET_UPDATE_MODE: |
1084 | if (get_user(p.update_mode, (int __user *)arg)) |
1085 | r = -EFAULT; |
1086 | else |
1087 | r = omapfb_set_update_mode(fbdev, mode: p.update_mode); |
1088 | break; |
1089 | case OMAPFB_GET_UPDATE_MODE: |
1090 | p.update_mode = omapfb_get_update_mode(fbdev); |
1091 | if (put_user(p.update_mode, |
1092 | (enum omapfb_update_mode __user *)arg)) |
1093 | r = -EFAULT; |
1094 | break; |
1095 | case OMAPFB_UPDATE_WINDOW_OLD: |
1096 | if (copy_from_user(to: &p.update_window, from: (void __user *)arg, |
1097 | n: sizeof(struct omapfb_update_window_old))) |
1098 | r = -EFAULT; |
1099 | else { |
1100 | struct omapfb_update_window *u = &p.update_window; |
1101 | u->out_x = u->x; |
1102 | u->out_y = u->y; |
1103 | u->out_width = u->width; |
1104 | u->out_height = u->height; |
1105 | memset(u->reserved, 0, sizeof(u->reserved)); |
1106 | r = omapfb_update_win(fbi, win: u); |
1107 | } |
1108 | break; |
1109 | case OMAPFB_UPDATE_WINDOW: |
1110 | if (copy_from_user(to: &p.update_window, from: (void __user *)arg, |
1111 | n: sizeof(p.update_window))) |
1112 | r = -EFAULT; |
1113 | else |
1114 | r = omapfb_update_win(fbi, win: &p.update_window); |
1115 | break; |
1116 | case OMAPFB_SETUP_PLANE: |
1117 | if (copy_from_user(to: &p.plane_info, from: (void __user *)arg, |
1118 | n: sizeof(p.plane_info))) |
1119 | r = -EFAULT; |
1120 | else |
1121 | r = omapfb_setup_plane(fbi, pi: &p.plane_info); |
1122 | break; |
1123 | case OMAPFB_QUERY_PLANE: |
1124 | if ((r = omapfb_query_plane(fbi, pi: &p.plane_info)) < 0) |
1125 | break; |
1126 | if (copy_to_user(to: (void __user *)arg, from: &p.plane_info, |
1127 | n: sizeof(p.plane_info))) |
1128 | r = -EFAULT; |
1129 | break; |
1130 | case OMAPFB_SETUP_MEM: |
1131 | if (copy_from_user(to: &p.mem_info, from: (void __user *)arg, |
1132 | n: sizeof(p.mem_info))) |
1133 | r = -EFAULT; |
1134 | else |
1135 | r = omapfb_setup_mem(fbi, mi: &p.mem_info); |
1136 | break; |
1137 | case OMAPFB_QUERY_MEM: |
1138 | if ((r = omapfb_query_mem(fbi, mi: &p.mem_info)) < 0) |
1139 | break; |
1140 | if (copy_to_user(to: (void __user *)arg, from: &p.mem_info, |
1141 | n: sizeof(p.mem_info))) |
1142 | r = -EFAULT; |
1143 | break; |
1144 | case OMAPFB_SET_COLOR_KEY: |
1145 | if (copy_from_user(to: &p.color_key, from: (void __user *)arg, |
1146 | n: sizeof(p.color_key))) |
1147 | r = -EFAULT; |
1148 | else |
1149 | r = omapfb_set_color_key(fbdev, ck: &p.color_key); |
1150 | break; |
1151 | case OMAPFB_GET_COLOR_KEY: |
1152 | if ((r = omapfb_get_color_key(fbdev, ck: &p.color_key)) < 0) |
1153 | break; |
1154 | if (copy_to_user(to: (void __user *)arg, from: &p.color_key, |
1155 | n: sizeof(p.color_key))) |
1156 | r = -EFAULT; |
1157 | break; |
1158 | case OMAPFB_GET_CAPS: |
1159 | omapfb_get_caps(fbdev, plane: plane->idx, caps: &p.caps); |
1160 | if (copy_to_user(to: (void __user *)arg, from: &p.caps, n: sizeof(p.caps))) |
1161 | r = -EFAULT; |
1162 | break; |
1163 | case OMAPFB_LCD_TEST: |
1164 | { |
1165 | int test_num; |
1166 | |
1167 | if (get_user(test_num, (int __user *)arg)) { |
1168 | r = -EFAULT; |
1169 | break; |
1170 | } |
1171 | if (!fbdev->panel->run_test) { |
1172 | r = -EINVAL; |
1173 | break; |
1174 | } |
1175 | r = fbdev->panel->run_test(fbdev->panel, test_num); |
1176 | break; |
1177 | } |
1178 | case OMAPFB_CTRL_TEST: |
1179 | { |
1180 | int test_num; |
1181 | |
1182 | if (get_user(test_num, (int __user *)arg)) { |
1183 | r = -EFAULT; |
1184 | break; |
1185 | } |
1186 | if (!fbdev->ctrl->run_test) { |
1187 | r = -EINVAL; |
1188 | break; |
1189 | } |
1190 | r = fbdev->ctrl->run_test(test_num); |
1191 | break; |
1192 | } |
1193 | default: |
1194 | r = -EINVAL; |
1195 | } |
1196 | |
1197 | return r; |
1198 | } |
1199 | |
1200 | static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma) |
1201 | { |
1202 | struct omapfb_plane_struct *plane = info->par; |
1203 | struct omapfb_device *fbdev = plane->fbdev; |
1204 | int r; |
1205 | |
1206 | vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); |
1207 | |
1208 | omapfb_rqueue_lock(fbdev); |
1209 | r = fbdev->ctrl->mmap(info, vma); |
1210 | omapfb_rqueue_unlock(fbdev); |
1211 | |
1212 | return r; |
1213 | } |
1214 | |
1215 | /* |
1216 | * Callback table for the frame buffer framework. Some of these pointers |
1217 | * will be changed according to the current setting of fb_info->accel_flags. |
1218 | */ |
1219 | static struct fb_ops omapfb_ops = { |
1220 | .owner = THIS_MODULE, |
1221 | FB_DEFAULT_IOMEM_OPS, |
1222 | .fb_open = omapfb_open, |
1223 | .fb_release = omapfb_release, |
1224 | .fb_setcolreg = omapfb_setcolreg, |
1225 | .fb_setcmap = omapfb_setcmap, |
1226 | .fb_blank = omapfb_blank, |
1227 | .fb_ioctl = omapfb_ioctl, |
1228 | .fb_check_var = omapfb_check_var, |
1229 | .fb_set_par = omapfb_set_par, |
1230 | .fb_pan_display = omapfb_pan_display, |
1231 | }; |
1232 | |
1233 | /* |
1234 | * --------------------------------------------------------------------------- |
1235 | * Sysfs interface |
1236 | * --------------------------------------------------------------------------- |
1237 | */ |
1238 | /* omapfbX sysfs entries */ |
1239 | static ssize_t omapfb_show_caps_num(struct device *dev, |
1240 | struct device_attribute *attr, char *buf) |
1241 | { |
1242 | struct omapfb_device *fbdev = dev_get_drvdata(dev); |
1243 | int plane; |
1244 | size_t size; |
1245 | struct omapfb_caps caps; |
1246 | |
1247 | plane = 0; |
1248 | size = 0; |
1249 | while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { |
1250 | omapfb_get_caps(fbdev, plane, caps: &caps); |
1251 | size += scnprintf(buf: &buf[size], PAGE_SIZE - size, |
1252 | fmt: "plane#%d %#010x %#010x %#010x\n" , |
1253 | plane, caps.ctrl, caps.plane_color, caps.wnd_color); |
1254 | plane++; |
1255 | } |
1256 | return size; |
1257 | } |
1258 | |
1259 | static ssize_t omapfb_show_caps_text(struct device *dev, |
1260 | struct device_attribute *attr, char *buf) |
1261 | { |
1262 | struct omapfb_device *fbdev = dev_get_drvdata(dev); |
1263 | int i; |
1264 | struct omapfb_caps caps; |
1265 | int plane; |
1266 | size_t size; |
1267 | |
1268 | plane = 0; |
1269 | size = 0; |
1270 | while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { |
1271 | omapfb_get_caps(fbdev, plane, caps: &caps); |
1272 | size += scnprintf(buf: &buf[size], PAGE_SIZE - size, |
1273 | fmt: "plane#%d:\n" , plane); |
1274 | for (i = 0; i < ARRAY_SIZE(ctrl_caps) && |
1275 | size < PAGE_SIZE; i++) { |
1276 | if (ctrl_caps[i].flag & caps.ctrl) |
1277 | size += scnprintf(buf: &buf[size], PAGE_SIZE - size, |
1278 | fmt: " %s\n" , ctrl_caps[i].name); |
1279 | } |
1280 | size += scnprintf(buf: &buf[size], PAGE_SIZE - size, |
1281 | fmt: " plane colors:\n" ); |
1282 | for (i = 0; i < ARRAY_SIZE(color_caps) && |
1283 | size < PAGE_SIZE; i++) { |
1284 | if (color_caps[i].flag & caps.plane_color) |
1285 | size += scnprintf(buf: &buf[size], PAGE_SIZE - size, |
1286 | fmt: " %s\n" , color_caps[i].name); |
1287 | } |
1288 | size += scnprintf(buf: &buf[size], PAGE_SIZE - size, |
1289 | fmt: " window colors:\n" ); |
1290 | for (i = 0; i < ARRAY_SIZE(color_caps) && |
1291 | size < PAGE_SIZE; i++) { |
1292 | if (color_caps[i].flag & caps.wnd_color) |
1293 | size += scnprintf(buf: &buf[size], PAGE_SIZE - size, |
1294 | fmt: " %s\n" , color_caps[i].name); |
1295 | } |
1296 | |
1297 | plane++; |
1298 | } |
1299 | return size; |
1300 | } |
1301 | |
1302 | static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL); |
1303 | static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL); |
1304 | |
1305 | /* panel sysfs entries */ |
1306 | static ssize_t omapfb_show_panel_name(struct device *dev, |
1307 | struct device_attribute *attr, char *buf) |
1308 | { |
1309 | struct omapfb_device *fbdev = dev_get_drvdata(dev); |
1310 | |
1311 | return sysfs_emit(buf, fmt: "%s\n" , fbdev->panel->name); |
1312 | } |
1313 | |
1314 | static ssize_t omapfb_show_bklight_level(struct device *dev, |
1315 | struct device_attribute *attr, |
1316 | char *buf) |
1317 | { |
1318 | struct omapfb_device *fbdev = dev_get_drvdata(dev); |
1319 | int r; |
1320 | |
1321 | if (fbdev->panel->get_bklight_level) { |
1322 | r = sysfs_emit(buf, fmt: "%d\n" , |
1323 | fbdev->panel->get_bklight_level(fbdev->panel)); |
1324 | } else |
1325 | r = -ENODEV; |
1326 | return r; |
1327 | } |
1328 | |
1329 | static ssize_t omapfb_store_bklight_level(struct device *dev, |
1330 | struct device_attribute *attr, |
1331 | const char *buf, size_t size) |
1332 | { |
1333 | struct omapfb_device *fbdev = dev_get_drvdata(dev); |
1334 | int r; |
1335 | |
1336 | if (fbdev->panel->set_bklight_level) { |
1337 | unsigned int level; |
1338 | |
1339 | if (sscanf(buf, "%10d" , &level) == 1) { |
1340 | r = fbdev->panel->set_bklight_level(fbdev->panel, |
1341 | level); |
1342 | } else |
1343 | r = -EINVAL; |
1344 | } else |
1345 | r = -ENODEV; |
1346 | return r ? r : size; |
1347 | } |
1348 | |
1349 | static ssize_t omapfb_show_bklight_max(struct device *dev, |
1350 | struct device_attribute *attr, char *buf) |
1351 | { |
1352 | struct omapfb_device *fbdev = dev_get_drvdata(dev); |
1353 | int r; |
1354 | |
1355 | if (fbdev->panel->get_bklight_level) { |
1356 | r = sysfs_emit(buf, fmt: "%d\n" , |
1357 | fbdev->panel->get_bklight_max(fbdev->panel)); |
1358 | } else |
1359 | r = -ENODEV; |
1360 | return r; |
1361 | } |
1362 | |
1363 | static struct device_attribute dev_attr_panel_name = |
1364 | __ATTR(name, 0444, omapfb_show_panel_name, NULL); |
1365 | static DEVICE_ATTR(backlight_level, 0664, |
1366 | omapfb_show_bklight_level, omapfb_store_bklight_level); |
1367 | static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL); |
1368 | |
1369 | static struct attribute *panel_attrs[] = { |
1370 | &dev_attr_panel_name.attr, |
1371 | &dev_attr_backlight_level.attr, |
1372 | &dev_attr_backlight_max.attr, |
1373 | NULL, |
1374 | }; |
1375 | |
1376 | static const struct attribute_group panel_attr_grp = { |
1377 | .name = "panel" , |
1378 | .attrs = panel_attrs, |
1379 | }; |
1380 | |
1381 | /* ctrl sysfs entries */ |
1382 | static ssize_t omapfb_show_ctrl_name(struct device *dev, |
1383 | struct device_attribute *attr, char *buf) |
1384 | { |
1385 | struct omapfb_device *fbdev = dev_get_drvdata(dev); |
1386 | |
1387 | return sysfs_emit(buf, fmt: "%s\n" , fbdev->ctrl->name); |
1388 | } |
1389 | |
1390 | static struct device_attribute dev_attr_ctrl_name = |
1391 | __ATTR(name, 0444, omapfb_show_ctrl_name, NULL); |
1392 | |
1393 | static struct attribute *ctrl_attrs[] = { |
1394 | &dev_attr_ctrl_name.attr, |
1395 | NULL, |
1396 | }; |
1397 | |
1398 | static const struct attribute_group ctrl_attr_grp = { |
1399 | .name = "ctrl" , |
1400 | .attrs = ctrl_attrs, |
1401 | }; |
1402 | |
1403 | static int omapfb_register_sysfs(struct omapfb_device *fbdev) |
1404 | { |
1405 | int r; |
1406 | |
1407 | if ((r = device_create_file(device: fbdev->dev, entry: &dev_attr_caps_num))) |
1408 | goto fail0; |
1409 | |
1410 | if ((r = device_create_file(device: fbdev->dev, entry: &dev_attr_caps_text))) |
1411 | goto fail1; |
1412 | |
1413 | if ((r = sysfs_create_group(kobj: &fbdev->dev->kobj, grp: &panel_attr_grp))) |
1414 | goto fail2; |
1415 | |
1416 | if ((r = sysfs_create_group(kobj: &fbdev->dev->kobj, grp: &ctrl_attr_grp))) |
1417 | goto fail3; |
1418 | |
1419 | return 0; |
1420 | fail3: |
1421 | sysfs_remove_group(kobj: &fbdev->dev->kobj, grp: &panel_attr_grp); |
1422 | fail2: |
1423 | device_remove_file(dev: fbdev->dev, attr: &dev_attr_caps_text); |
1424 | fail1: |
1425 | device_remove_file(dev: fbdev->dev, attr: &dev_attr_caps_num); |
1426 | fail0: |
1427 | dev_err(fbdev->dev, "unable to register sysfs interface\n" ); |
1428 | return r; |
1429 | } |
1430 | |
1431 | static void omapfb_unregister_sysfs(struct omapfb_device *fbdev) |
1432 | { |
1433 | sysfs_remove_group(kobj: &fbdev->dev->kobj, grp: &ctrl_attr_grp); |
1434 | sysfs_remove_group(kobj: &fbdev->dev->kobj, grp: &panel_attr_grp); |
1435 | device_remove_file(dev: fbdev->dev, attr: &dev_attr_caps_num); |
1436 | device_remove_file(dev: fbdev->dev, attr: &dev_attr_caps_text); |
1437 | } |
1438 | |
1439 | /* |
1440 | * --------------------------------------------------------------------------- |
1441 | * LDM callbacks |
1442 | * --------------------------------------------------------------------------- |
1443 | */ |
1444 | /* Initialize system fb_info object and set the default video mode. |
1445 | * The frame buffer memory already allocated by lcddma_init |
1446 | */ |
1447 | static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info) |
1448 | { |
1449 | struct fb_var_screeninfo *var = &info->var; |
1450 | struct fb_fix_screeninfo *fix = &info->fix; |
1451 | int r = 0; |
1452 | |
1453 | info->fbops = &omapfb_ops; |
1454 | |
1455 | strscpy(fix->id, MODULE_NAME, sizeof(fix->id)); |
1456 | |
1457 | info->pseudo_palette = fbdev->pseudo_palette; |
1458 | |
1459 | var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0; |
1460 | var->xres = def_vxres; |
1461 | var->yres = def_vyres; |
1462 | var->xres_virtual = def_vxres; |
1463 | var->yres_virtual = def_vyres; |
1464 | var->rotate = def_rotate; |
1465 | var->bits_per_pixel = fbdev->panel->bpp; |
1466 | |
1467 | set_fb_var(fbi: info, var); |
1468 | set_fb_fix(fbi: info, from_init: 1); |
1469 | |
1470 | r = fb_alloc_cmap(cmap: &info->cmap, len: 16, transp: 0); |
1471 | if (r != 0) |
1472 | dev_err(fbdev->dev, "unable to allocate color map memory\n" ); |
1473 | |
1474 | return r; |
1475 | } |
1476 | |
1477 | /* Release the fb_info object */ |
1478 | static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi) |
1479 | { |
1480 | fb_dealloc_cmap(cmap: &fbi->cmap); |
1481 | } |
1482 | |
1483 | static void planes_cleanup(struct omapfb_device *fbdev) |
1484 | { |
1485 | int i; |
1486 | |
1487 | for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { |
1488 | if (fbdev->fb_info[i] == NULL) |
1489 | break; |
1490 | fbinfo_cleanup(fbdev, fbi: fbdev->fb_info[i]); |
1491 | framebuffer_release(info: fbdev->fb_info[i]); |
1492 | } |
1493 | } |
1494 | |
1495 | static int planes_init(struct omapfb_device *fbdev) |
1496 | { |
1497 | struct fb_info *fbi; |
1498 | int i; |
1499 | int r; |
1500 | |
1501 | for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { |
1502 | struct omapfb_plane_struct *plane; |
1503 | fbi = framebuffer_alloc(size: sizeof(struct omapfb_plane_struct), |
1504 | dev: fbdev->dev); |
1505 | if (fbi == NULL) { |
1506 | planes_cleanup(fbdev); |
1507 | return -ENOMEM; |
1508 | } |
1509 | plane = fbi->par; |
1510 | plane->idx = i; |
1511 | plane->fbdev = fbdev; |
1512 | plane->info.mirror = def_mirror; |
1513 | fbdev->fb_info[i] = fbi; |
1514 | |
1515 | if ((r = fbinfo_init(fbdev, info: fbi)) < 0) { |
1516 | framebuffer_release(info: fbi); |
1517 | planes_cleanup(fbdev); |
1518 | return r; |
1519 | } |
1520 | plane->info.out_width = fbi->var.xres; |
1521 | plane->info.out_height = fbi->var.yres; |
1522 | } |
1523 | return 0; |
1524 | } |
1525 | |
1526 | /* |
1527 | * Free driver resources. Can be called to rollback an aborted initialization |
1528 | * sequence. |
1529 | */ |
1530 | static void omapfb_free_resources(struct omapfb_device *fbdev, int state) |
1531 | { |
1532 | int i; |
1533 | |
1534 | switch (state) { |
1535 | case OMAPFB_ACTIVE: |
1536 | for (i = 0; i < fbdev->mem_desc.region_cnt; i++) |
1537 | unregister_framebuffer(fb_info: fbdev->fb_info[i]); |
1538 | fallthrough; |
1539 | case 7: |
1540 | omapfb_unregister_sysfs(fbdev); |
1541 | fallthrough; |
1542 | case 6: |
1543 | if (fbdev->panel->disable) |
1544 | fbdev->panel->disable(fbdev->panel); |
1545 | fallthrough; |
1546 | case 5: |
1547 | omapfb_set_update_mode(fbdev, mode: OMAPFB_UPDATE_DISABLED); |
1548 | fallthrough; |
1549 | case 4: |
1550 | planes_cleanup(fbdev); |
1551 | fallthrough; |
1552 | case 3: |
1553 | ctrl_cleanup(fbdev); |
1554 | fallthrough; |
1555 | case 2: |
1556 | if (fbdev->panel->cleanup) |
1557 | fbdev->panel->cleanup(fbdev->panel); |
1558 | fallthrough; |
1559 | case 1: |
1560 | dev_set_drvdata(dev: fbdev->dev, NULL); |
1561 | kfree(objp: fbdev); |
1562 | break; |
1563 | case 0: |
1564 | /* nothing to free */ |
1565 | break; |
1566 | default: |
1567 | BUG(); |
1568 | } |
1569 | } |
1570 | |
1571 | static int omapfb_find_ctrl(struct omapfb_device *fbdev) |
1572 | { |
1573 | struct omapfb_platform_data *conf; |
1574 | char name[17]; |
1575 | int i; |
1576 | |
1577 | conf = dev_get_platdata(dev: fbdev->dev); |
1578 | |
1579 | fbdev->ctrl = NULL; |
1580 | |
1581 | strscpy(name, conf->lcd.ctrl_name, sizeof(name)); |
1582 | |
1583 | if (strcmp(name, "internal" ) == 0) { |
1584 | fbdev->ctrl = fbdev->int_ctrl; |
1585 | return 0; |
1586 | } |
1587 | |
1588 | for (i = 0; i < ARRAY_SIZE(ctrls); i++) { |
1589 | dev_dbg(fbdev->dev, "ctrl %s\n" , ctrls[i]->name); |
1590 | if (strcmp(ctrls[i]->name, name) == 0) { |
1591 | fbdev->ctrl = ctrls[i]; |
1592 | break; |
1593 | } |
1594 | } |
1595 | |
1596 | if (fbdev->ctrl == NULL) { |
1597 | dev_dbg(fbdev->dev, "ctrl %s not supported\n" , name); |
1598 | return -1; |
1599 | } |
1600 | |
1601 | return 0; |
1602 | } |
1603 | |
1604 | /* |
1605 | * Called by LDM binding to probe and attach a new device. |
1606 | * Initialization sequence: |
1607 | * 1. allocate system omapfb_device structure |
1608 | * 2. select controller type according to platform configuration |
1609 | * init LCD panel |
1610 | * 3. init LCD controller and LCD DMA |
1611 | * 4. init system fb_info structure for all planes |
1612 | * 5. setup video mode for first plane and enable it |
1613 | * 6. enable LCD panel |
1614 | * 7. register sysfs attributes |
1615 | * OMAPFB_ACTIVE: register system fb_info structure for all planes |
1616 | */ |
1617 | static int omapfb_do_probe(struct platform_device *pdev, |
1618 | struct lcd_panel *panel) |
1619 | { |
1620 | struct omapfb_device *fbdev = NULL; |
1621 | int init_state; |
1622 | unsigned long phz, hhz, vhz; |
1623 | unsigned long vram; |
1624 | int i; |
1625 | int r = 0; |
1626 | |
1627 | init_state = 0; |
1628 | |
1629 | if (pdev->num_resources != 2) { |
1630 | dev_err(&pdev->dev, "probed for an unknown device\n" ); |
1631 | r = -ENODEV; |
1632 | goto cleanup; |
1633 | } |
1634 | |
1635 | if (dev_get_platdata(dev: &pdev->dev) == NULL) { |
1636 | dev_err(&pdev->dev, "missing platform data\n" ); |
1637 | r = -ENOENT; |
1638 | goto cleanup; |
1639 | } |
1640 | |
1641 | fbdev = kzalloc(size: sizeof(*fbdev), GFP_KERNEL); |
1642 | if (fbdev == NULL) { |
1643 | dev_err(&pdev->dev, |
1644 | "unable to allocate memory for device info\n" ); |
1645 | r = -ENOMEM; |
1646 | goto cleanup; |
1647 | } |
1648 | |
1649 | r = platform_get_irq(pdev, 0); |
1650 | if (r < 0) |
1651 | goto cleanup; |
1652 | fbdev->int_irq = r; |
1653 | |
1654 | r = platform_get_irq(pdev, 1); |
1655 | if (r < 0) |
1656 | goto cleanup; |
1657 | fbdev->ext_irq = r; |
1658 | |
1659 | init_state++; |
1660 | |
1661 | fbdev->dev = &pdev->dev; |
1662 | fbdev->panel = panel; |
1663 | fbdev->dssdev = &omapdss_device; |
1664 | platform_set_drvdata(pdev, data: fbdev); |
1665 | |
1666 | mutex_init(&fbdev->rqueue_mutex); |
1667 | |
1668 | fbdev->int_ctrl = &omap1_int_ctrl; |
1669 | #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL |
1670 | fbdev->ext_if = &omap1_ext_if; |
1671 | #endif |
1672 | if (omapfb_find_ctrl(fbdev) < 0) { |
1673 | dev_err(fbdev->dev, |
1674 | "LCD controller not found, board not supported\n" ); |
1675 | r = -ENODEV; |
1676 | goto cleanup; |
1677 | } |
1678 | |
1679 | if (fbdev->panel->init) { |
1680 | r = fbdev->panel->init(fbdev->panel, fbdev); |
1681 | if (r) |
1682 | goto cleanup; |
1683 | } |
1684 | |
1685 | pr_info("omapfb: configured for panel %s\n" , fbdev->panel->name); |
1686 | |
1687 | def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res; |
1688 | def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res; |
1689 | |
1690 | init_state++; |
1691 | |
1692 | r = ctrl_init(fbdev); |
1693 | if (r) |
1694 | goto cleanup; |
1695 | if (fbdev->ctrl->mmap != NULL) |
1696 | omapfb_ops.fb_mmap = omapfb_mmap; |
1697 | init_state++; |
1698 | |
1699 | r = planes_init(fbdev); |
1700 | if (r) |
1701 | goto cleanup; |
1702 | init_state++; |
1703 | |
1704 | #ifdef CONFIG_FB_OMAP_DMA_TUNE |
1705 | /* Set DMA priority for EMIFF access to highest */ |
1706 | omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15); |
1707 | #endif |
1708 | |
1709 | r = ctrl_change_mode(fbi: fbdev->fb_info[0]); |
1710 | if (r) { |
1711 | dev_err(fbdev->dev, "mode setting failed\n" ); |
1712 | goto cleanup; |
1713 | } |
1714 | |
1715 | /* GFX plane is enabled by default */ |
1716 | r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1); |
1717 | if (r) |
1718 | goto cleanup; |
1719 | |
1720 | omapfb_set_update_mode(fbdev, mode: manual_update ? |
1721 | OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE); |
1722 | init_state++; |
1723 | |
1724 | if (fbdev->panel->enable) { |
1725 | r = fbdev->panel->enable(fbdev->panel); |
1726 | if (r) |
1727 | goto cleanup; |
1728 | } |
1729 | init_state++; |
1730 | |
1731 | r = omapfb_register_sysfs(fbdev); |
1732 | if (r) |
1733 | goto cleanup; |
1734 | init_state++; |
1735 | |
1736 | vram = 0; |
1737 | for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { |
1738 | r = register_framebuffer(fb_info: fbdev->fb_info[i]); |
1739 | if (r != 0) { |
1740 | dev_err(fbdev->dev, |
1741 | "registering framebuffer %d failed\n" , i); |
1742 | goto cleanup; |
1743 | } |
1744 | vram += fbdev->mem_desc.region[i].size; |
1745 | } |
1746 | |
1747 | fbdev->state = OMAPFB_ACTIVE; |
1748 | |
1749 | panel = fbdev->panel; |
1750 | phz = panel->pixel_clock * 1000; |
1751 | hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw); |
1752 | vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw); |
1753 | |
1754 | omapfb_dev = fbdev; |
1755 | |
1756 | pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n" , |
1757 | vram, fbdev->mem_desc.region_cnt); |
1758 | pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz " |
1759 | "vfreq %lu.%lu Hz\n" , |
1760 | phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10); |
1761 | |
1762 | return 0; |
1763 | |
1764 | cleanup: |
1765 | omapfb_free_resources(fbdev, state: init_state); |
1766 | |
1767 | return r; |
1768 | } |
1769 | |
1770 | static int omapfb_probe(struct platform_device *pdev) |
1771 | { |
1772 | int r; |
1773 | |
1774 | BUG_ON(fbdev_pdev != NULL); |
1775 | |
1776 | r = platform_device_register(&omapdss_device); |
1777 | if (r) { |
1778 | dev_err(&pdev->dev, "can't register omapdss device\n" ); |
1779 | return r; |
1780 | } |
1781 | |
1782 | /* Delay actual initialization until the LCD is registered */ |
1783 | fbdev_pdev = pdev; |
1784 | if (fbdev_panel != NULL) |
1785 | omapfb_do_probe(pdev: fbdev_pdev, panel: fbdev_panel); |
1786 | return 0; |
1787 | } |
1788 | |
1789 | void omapfb_register_panel(struct lcd_panel *panel) |
1790 | { |
1791 | BUG_ON(fbdev_panel != NULL); |
1792 | |
1793 | fbdev_panel = panel; |
1794 | if (fbdev_pdev != NULL) |
1795 | omapfb_do_probe(pdev: fbdev_pdev, panel: fbdev_panel); |
1796 | } |
1797 | EXPORT_SYMBOL_GPL(omapfb_register_panel); |
1798 | |
1799 | /* Called when the device is being detached from the driver */ |
1800 | static void omapfb_remove(struct platform_device *pdev) |
1801 | { |
1802 | struct omapfb_device *fbdev = platform_get_drvdata(pdev); |
1803 | enum omapfb_state saved_state = fbdev->state; |
1804 | |
1805 | /* FIXME: wait till completion of pending events */ |
1806 | |
1807 | fbdev->state = OMAPFB_DISABLED; |
1808 | omapfb_free_resources(fbdev, state: saved_state); |
1809 | |
1810 | platform_device_unregister(&omapdss_device); |
1811 | fbdev->dssdev = NULL; |
1812 | } |
1813 | |
1814 | /* PM suspend */ |
1815 | static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg) |
1816 | { |
1817 | struct omapfb_device *fbdev = platform_get_drvdata(pdev); |
1818 | |
1819 | if (fbdev != NULL) |
1820 | omapfb_blank(blank: FB_BLANK_POWERDOWN, fbi: fbdev->fb_info[0]); |
1821 | return 0; |
1822 | } |
1823 | |
1824 | /* PM resume */ |
1825 | static int omapfb_resume(struct platform_device *pdev) |
1826 | { |
1827 | struct omapfb_device *fbdev = platform_get_drvdata(pdev); |
1828 | |
1829 | if (fbdev != NULL) |
1830 | omapfb_blank(blank: FB_BLANK_UNBLANK, fbi: fbdev->fb_info[0]); |
1831 | return 0; |
1832 | } |
1833 | |
1834 | static struct platform_driver omapfb_driver = { |
1835 | .probe = omapfb_probe, |
1836 | .remove_new = omapfb_remove, |
1837 | .suspend = omapfb_suspend, |
1838 | .resume = omapfb_resume, |
1839 | .driver = { |
1840 | .name = MODULE_NAME, |
1841 | }, |
1842 | }; |
1843 | |
1844 | #ifndef MODULE |
1845 | |
1846 | /* Process kernel command line parameters */ |
1847 | static int __init omapfb_setup(char *options) |
1848 | { |
1849 | char *this_opt = NULL; |
1850 | int r = 0; |
1851 | |
1852 | pr_debug("omapfb: options %s\n" , options); |
1853 | |
1854 | if (!options || !*options) |
1855 | return 0; |
1856 | |
1857 | while (!r && (this_opt = strsep(&options, "," )) != NULL) { |
1858 | if (!strncmp(this_opt, "accel" , 5)) |
1859 | def_accel = 1; |
1860 | else if (!strncmp(this_opt, "vram:" , 5)) { |
1861 | unsigned long long vram; |
1862 | char *suffix; |
1863 | |
1864 | vram = memparse(ptr: this_opt + 5, retptr: &suffix); |
1865 | switch (suffix[0]) { |
1866 | case '\0': |
1867 | break; |
1868 | default: |
1869 | pr_debug("omapfb: invalid vram suffix %c\n" , |
1870 | suffix[0]); |
1871 | r = -1; |
1872 | } |
1873 | def_vram[def_vram_cnt++] = vram; |
1874 | } |
1875 | else if (!strncmp(this_opt, "vxres:" , 6)) |
1876 | def_vxres = simple_strtoul(this_opt + 6, NULL, 0); |
1877 | else if (!strncmp(this_opt, "vyres:" , 6)) |
1878 | def_vyres = simple_strtoul(this_opt + 6, NULL, 0); |
1879 | else if (!strncmp(this_opt, "rotate:" , 7)) |
1880 | def_rotate = (simple_strtoul(this_opt + 7, NULL, 0)); |
1881 | else if (!strncmp(this_opt, "mirror:" , 7)) |
1882 | def_mirror = (simple_strtoul(this_opt + 7, NULL, 0)); |
1883 | else if (!strncmp(this_opt, "manual_update" , 13)) |
1884 | manual_update = 1; |
1885 | else { |
1886 | pr_debug("omapfb: invalid option\n" ); |
1887 | r = -1; |
1888 | } |
1889 | } |
1890 | |
1891 | return r; |
1892 | } |
1893 | |
1894 | #endif |
1895 | |
1896 | /* Register both the driver and the device */ |
1897 | static int __init omapfb_init(void) |
1898 | { |
1899 | #ifndef MODULE |
1900 | char *option; |
1901 | |
1902 | if (fb_get_options(name: "omapfb" , option: &option)) |
1903 | return -ENODEV; |
1904 | omapfb_setup(options: option); |
1905 | #endif |
1906 | /* Register the driver with LDM */ |
1907 | if (platform_driver_register(&omapfb_driver)) { |
1908 | pr_debug("failed to register omapfb driver\n" ); |
1909 | return -ENODEV; |
1910 | } |
1911 | |
1912 | return 0; |
1913 | } |
1914 | |
1915 | static void __exit omapfb_cleanup(void) |
1916 | { |
1917 | platform_driver_unregister(&omapfb_driver); |
1918 | } |
1919 | |
1920 | module_param_named(accel, def_accel, uint, 0664); |
1921 | module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664); |
1922 | module_param_named(vxres, def_vxres, long, 0664); |
1923 | module_param_named(vyres, def_vyres, long, 0664); |
1924 | module_param_named(rotate, def_rotate, uint, 0664); |
1925 | module_param_named(mirror, def_mirror, uint, 0664); |
1926 | module_param_named(manual_update, manual_update, bool, 0664); |
1927 | |
1928 | module_init(omapfb_init); |
1929 | module_exit(omapfb_cleanup); |
1930 | |
1931 | MODULE_DESCRIPTION("TI OMAP framebuffer driver" ); |
1932 | MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>" ); |
1933 | MODULE_LICENSE("GPL" ); |
1934 | |