diff options
Diffstat (limited to 'drivers/video/fbdev/msm/msm_fb.c')
-rw-r--r-- | drivers/video/fbdev/msm/msm_fb.c | 638 |
1 files changed, 638 insertions, 0 deletions
diff --git a/drivers/video/fbdev/msm/msm_fb.c b/drivers/video/fbdev/msm/msm_fb.c new file mode 100644 index 000000000000..1374803fbcd9 --- /dev/null +++ b/drivers/video/fbdev/msm/msm_fb.c | |||
@@ -0,0 +1,638 @@ | |||
1 | /* drivers/video/msm/msm_fb.c | ||
2 | * | ||
3 | * Core MSM framebuffer driver. | ||
4 | * | ||
5 | * Copyright (C) 2007 Google Incorporated | ||
6 | * | ||
7 | * This software is licensed under the terms of the GNU General Public | ||
8 | * License version 2, as published by the Free Software Foundation, and | ||
9 | * may be copied, distributed, and modified under those terms. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | */ | ||
16 | |||
17 | #include <linux/platform_device.h> | ||
18 | #include <linux/module.h> | ||
19 | #include <linux/fb.h> | ||
20 | #include <linux/slab.h> | ||
21 | #include <linux/delay.h> | ||
22 | |||
23 | #include <linux/freezer.h> | ||
24 | #include <linux/wait.h> | ||
25 | #include <linux/msm_mdp.h> | ||
26 | #include <linux/io.h> | ||
27 | #include <linux/uaccess.h> | ||
28 | #include <linux/platform_data/video-msm_fb.h> | ||
29 | #include <linux/workqueue.h> | ||
30 | #include <linux/clk.h> | ||
31 | #include <linux/debugfs.h> | ||
32 | #include <linux/dma-mapping.h> | ||
33 | |||
34 | #define PRINT_FPS 0 | ||
35 | #define PRINT_BLIT_TIME 0 | ||
36 | |||
37 | #define SLEEPING 0x4 | ||
38 | #define UPDATING 0x3 | ||
39 | #define FULL_UPDATE_DONE 0x2 | ||
40 | #define WAKING 0x1 | ||
41 | #define AWAKE 0x0 | ||
42 | |||
43 | #define NONE 0 | ||
44 | #define SUSPEND_RESUME 0x1 | ||
45 | #define FPS 0x2 | ||
46 | #define BLIT_TIME 0x4 | ||
47 | #define SHOW_UPDATES 0x8 | ||
48 | |||
49 | #define DLOG(mask, fmt, args...) \ | ||
50 | do { \ | ||
51 | if (msmfb_debug_mask & mask) \ | ||
52 | printk(KERN_INFO "msmfb: "fmt, ##args); \ | ||
53 | } while (0) | ||
54 | |||
55 | static int msmfb_debug_mask; | ||
56 | module_param_named(msmfb_debug_mask, msmfb_debug_mask, int, | ||
57 | S_IRUGO | S_IWUSR | S_IWGRP); | ||
58 | |||
59 | struct mdp_device *mdp; | ||
60 | |||
61 | struct msmfb_info { | ||
62 | struct fb_info *fb; | ||
63 | struct msm_panel_data *panel; | ||
64 | int xres; | ||
65 | int yres; | ||
66 | unsigned output_format; | ||
67 | unsigned yoffset; | ||
68 | unsigned frame_requested; | ||
69 | unsigned frame_done; | ||
70 | int sleeping; | ||
71 | unsigned update_frame; | ||
72 | struct { | ||
73 | int left; | ||
74 | int top; | ||
75 | int eright; /* exclusive */ | ||
76 | int ebottom; /* exclusive */ | ||
77 | } update_info; | ||
78 | char *black; | ||
79 | |||
80 | spinlock_t update_lock; | ||
81 | struct mutex panel_init_lock; | ||
82 | wait_queue_head_t frame_wq; | ||
83 | struct work_struct resume_work; | ||
84 | struct msmfb_callback dma_callback; | ||
85 | struct msmfb_callback vsync_callback; | ||
86 | struct hrtimer fake_vsync; | ||
87 | ktime_t vsync_request_time; | ||
88 | }; | ||
89 | |||
90 | static int msmfb_open(struct fb_info *info, int user) | ||
91 | { | ||
92 | return 0; | ||
93 | } | ||
94 | |||
95 | static int msmfb_release(struct fb_info *info, int user) | ||
96 | { | ||
97 | return 0; | ||
98 | } | ||
99 | |||
100 | /* Called from dma interrupt handler, must not sleep */ | ||
101 | static void msmfb_handle_dma_interrupt(struct msmfb_callback *callback) | ||
102 | { | ||
103 | unsigned long irq_flags; | ||
104 | struct msmfb_info *msmfb = container_of(callback, struct msmfb_info, | ||
105 | dma_callback); | ||
106 | |||
107 | spin_lock_irqsave(&msmfb->update_lock, irq_flags); | ||
108 | msmfb->frame_done = msmfb->frame_requested; | ||
109 | if (msmfb->sleeping == UPDATING && | ||
110 | msmfb->frame_done == msmfb->update_frame) { | ||
111 | DLOG(SUSPEND_RESUME, "full update completed\n"); | ||
112 | schedule_work(&msmfb->resume_work); | ||
113 | } | ||
114 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
115 | wake_up(&msmfb->frame_wq); | ||
116 | } | ||
117 | |||
118 | static int msmfb_start_dma(struct msmfb_info *msmfb) | ||
119 | { | ||
120 | uint32_t x, y, w, h; | ||
121 | unsigned addr; | ||
122 | unsigned long irq_flags; | ||
123 | uint32_t yoffset; | ||
124 | s64 time_since_request; | ||
125 | struct msm_panel_data *panel = msmfb->panel; | ||
126 | |||
127 | spin_lock_irqsave(&msmfb->update_lock, irq_flags); | ||
128 | time_since_request = ktime_to_ns(ktime_sub(ktime_get(), | ||
129 | msmfb->vsync_request_time)); | ||
130 | if (time_since_request > 20 * NSEC_PER_MSEC) { | ||
131 | uint32_t us; | ||
132 | us = do_div(time_since_request, NSEC_PER_MSEC) / NSEC_PER_USEC; | ||
133 | printk(KERN_WARNING "msmfb_start_dma %lld.%03u ms after vsync " | ||
134 | "request\n", time_since_request, us); | ||
135 | } | ||
136 | if (msmfb->frame_done == msmfb->frame_requested) { | ||
137 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
138 | return -1; | ||
139 | } | ||
140 | if (msmfb->sleeping == SLEEPING) { | ||
141 | DLOG(SUSPEND_RESUME, "tried to start dma while asleep\n"); | ||
142 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
143 | return -1; | ||
144 | } | ||
145 | x = msmfb->update_info.left; | ||
146 | y = msmfb->update_info.top; | ||
147 | w = msmfb->update_info.eright - x; | ||
148 | h = msmfb->update_info.ebottom - y; | ||
149 | yoffset = msmfb->yoffset; | ||
150 | msmfb->update_info.left = msmfb->xres + 1; | ||
151 | msmfb->update_info.top = msmfb->yres + 1; | ||
152 | msmfb->update_info.eright = 0; | ||
153 | msmfb->update_info.ebottom = 0; | ||
154 | if (unlikely(w > msmfb->xres || h > msmfb->yres || | ||
155 | w == 0 || h == 0)) { | ||
156 | printk(KERN_INFO "invalid update: %d %d %d " | ||
157 | "%d\n", x, y, w, h); | ||
158 | msmfb->frame_done = msmfb->frame_requested; | ||
159 | goto error; | ||
160 | } | ||
161 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
162 | |||
163 | addr = ((msmfb->xres * (yoffset + y) + x) * 2); | ||
164 | mdp->dma(mdp, addr + msmfb->fb->fix.smem_start, | ||
165 | msmfb->xres * 2, w, h, x, y, &msmfb->dma_callback, | ||
166 | panel->interface_type); | ||
167 | return 0; | ||
168 | error: | ||
169 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
170 | /* some clients need to clear their vsync interrupt */ | ||
171 | if (panel->clear_vsync) | ||
172 | panel->clear_vsync(panel); | ||
173 | wake_up(&msmfb->frame_wq); | ||
174 | return 0; | ||
175 | } | ||
176 | |||
177 | /* Called from esync interrupt handler, must not sleep */ | ||
178 | static void msmfb_handle_vsync_interrupt(struct msmfb_callback *callback) | ||
179 | { | ||
180 | struct msmfb_info *msmfb = container_of(callback, struct msmfb_info, | ||
181 | vsync_callback); | ||
182 | msmfb_start_dma(msmfb); | ||
183 | } | ||
184 | |||
185 | static enum hrtimer_restart msmfb_fake_vsync(struct hrtimer *timer) | ||
186 | { | ||
187 | struct msmfb_info *msmfb = container_of(timer, struct msmfb_info, | ||
188 | fake_vsync); | ||
189 | msmfb_start_dma(msmfb); | ||
190 | return HRTIMER_NORESTART; | ||
191 | } | ||
192 | |||
193 | static void msmfb_pan_update(struct fb_info *info, uint32_t left, uint32_t top, | ||
194 | uint32_t eright, uint32_t ebottom, | ||
195 | uint32_t yoffset, int pan_display) | ||
196 | { | ||
197 | struct msmfb_info *msmfb = info->par; | ||
198 | struct msm_panel_data *panel = msmfb->panel; | ||
199 | unsigned long irq_flags; | ||
200 | int sleeping; | ||
201 | int retry = 1; | ||
202 | |||
203 | DLOG(SHOW_UPDATES, "update %d %d %d %d %d %d\n", | ||
204 | left, top, eright, ebottom, yoffset, pan_display); | ||
205 | restart: | ||
206 | spin_lock_irqsave(&msmfb->update_lock, irq_flags); | ||
207 | |||
208 | /* if we are sleeping, on a pan_display wait 10ms (to throttle back | ||
209 | * drawing otherwise return */ | ||
210 | if (msmfb->sleeping == SLEEPING) { | ||
211 | DLOG(SUSPEND_RESUME, "drawing while asleep\n"); | ||
212 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
213 | if (pan_display) | ||
214 | wait_event_interruptible_timeout(msmfb->frame_wq, | ||
215 | msmfb->sleeping != SLEEPING, HZ/10); | ||
216 | return; | ||
217 | } | ||
218 | |||
219 | sleeping = msmfb->sleeping; | ||
220 | /* on a full update, if the last frame has not completed, wait for it */ | ||
221 | if ((pan_display && msmfb->frame_requested != msmfb->frame_done) || | ||
222 | sleeping == UPDATING) { | ||
223 | int ret; | ||
224 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
225 | ret = wait_event_interruptible_timeout(msmfb->frame_wq, | ||
226 | msmfb->frame_done == msmfb->frame_requested && | ||
227 | msmfb->sleeping != UPDATING, 5 * HZ); | ||
228 | if (ret <= 0 && (msmfb->frame_requested != msmfb->frame_done || | ||
229 | msmfb->sleeping == UPDATING)) { | ||
230 | if (retry && panel->request_vsync && | ||
231 | (sleeping == AWAKE)) { | ||
232 | panel->request_vsync(panel, | ||
233 | &msmfb->vsync_callback); | ||
234 | retry = 0; | ||
235 | printk(KERN_WARNING "msmfb_pan_display timeout " | ||
236 | "rerequest vsync\n"); | ||
237 | } else { | ||
238 | printk(KERN_WARNING "msmfb_pan_display timeout " | ||
239 | "waiting for frame start, %d %d\n", | ||
240 | msmfb->frame_requested, | ||
241 | msmfb->frame_done); | ||
242 | return; | ||
243 | } | ||
244 | } | ||
245 | goto restart; | ||
246 | } | ||
247 | |||
248 | |||
249 | msmfb->frame_requested++; | ||
250 | /* if necessary, update the y offset, if this is the | ||
251 | * first full update on resume, set the sleeping state */ | ||
252 | if (pan_display) { | ||
253 | msmfb->yoffset = yoffset; | ||
254 | if (left == 0 && top == 0 && eright == info->var.xres && | ||
255 | ebottom == info->var.yres) { | ||
256 | if (sleeping == WAKING) { | ||
257 | msmfb->update_frame = msmfb->frame_requested; | ||
258 | DLOG(SUSPEND_RESUME, "full update starting\n"); | ||
259 | msmfb->sleeping = UPDATING; | ||
260 | } | ||
261 | } | ||
262 | } | ||
263 | |||
264 | /* set the update request */ | ||
265 | if (left < msmfb->update_info.left) | ||
266 | msmfb->update_info.left = left; | ||
267 | if (top < msmfb->update_info.top) | ||
268 | msmfb->update_info.top = top; | ||
269 | if (eright > msmfb->update_info.eright) | ||
270 | msmfb->update_info.eright = eright; | ||
271 | if (ebottom > msmfb->update_info.ebottom) | ||
272 | msmfb->update_info.ebottom = ebottom; | ||
273 | DLOG(SHOW_UPDATES, "update queued %d %d %d %d %d\n", | ||
274 | msmfb->update_info.left, msmfb->update_info.top, | ||
275 | msmfb->update_info.eright, msmfb->update_info.ebottom, | ||
276 | msmfb->yoffset); | ||
277 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
278 | |||
279 | /* if the panel is all the way on wait for vsync, otherwise sleep | ||
280 | * for 16 ms (long enough for the dma to panel) and then begin dma */ | ||
281 | msmfb->vsync_request_time = ktime_get(); | ||
282 | if (panel->request_vsync && (sleeping == AWAKE)) { | ||
283 | panel->request_vsync(panel, &msmfb->vsync_callback); | ||
284 | } else { | ||
285 | if (!hrtimer_active(&msmfb->fake_vsync)) { | ||
286 | hrtimer_start(&msmfb->fake_vsync, | ||
287 | ktime_set(0, NSEC_PER_SEC/60), | ||
288 | HRTIMER_MODE_REL); | ||
289 | } | ||
290 | } | ||
291 | } | ||
292 | |||
293 | static void msmfb_update(struct fb_info *info, uint32_t left, uint32_t top, | ||
294 | uint32_t eright, uint32_t ebottom) | ||
295 | { | ||
296 | msmfb_pan_update(info, left, top, eright, ebottom, 0, 0); | ||
297 | } | ||
298 | |||
299 | static void power_on_panel(struct work_struct *work) | ||
300 | { | ||
301 | struct msmfb_info *msmfb = | ||
302 | container_of(work, struct msmfb_info, resume_work); | ||
303 | struct msm_panel_data *panel = msmfb->panel; | ||
304 | unsigned long irq_flags; | ||
305 | |||
306 | mutex_lock(&msmfb->panel_init_lock); | ||
307 | DLOG(SUSPEND_RESUME, "turning on panel\n"); | ||
308 | if (msmfb->sleeping == UPDATING) { | ||
309 | if (panel->unblank(panel)) { | ||
310 | printk(KERN_INFO "msmfb: panel unblank failed," | ||
311 | "not starting drawing\n"); | ||
312 | goto error; | ||
313 | } | ||
314 | spin_lock_irqsave(&msmfb->update_lock, irq_flags); | ||
315 | msmfb->sleeping = AWAKE; | ||
316 | wake_up(&msmfb->frame_wq); | ||
317 | spin_unlock_irqrestore(&msmfb->update_lock, irq_flags); | ||
318 | } | ||
319 | error: | ||
320 | mutex_unlock(&msmfb->panel_init_lock); | ||
321 | } | ||
322 | |||
323 | |||
324 | static int msmfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | ||
325 | { | ||
326 | if ((var->xres != info->var.xres) || | ||
327 | (var->yres != info->var.yres) || | ||
328 | (var->xres_virtual != info->var.xres_virtual) || | ||
329 | (var->yres_virtual != info->var.yres_virtual) || | ||
330 | (var->xoffset != info->var.xoffset) || | ||
331 | (var->bits_per_pixel != info->var.bits_per_pixel) || | ||
332 | (var->grayscale != info->var.grayscale)) | ||
333 | return -EINVAL; | ||
334 | return 0; | ||
335 | } | ||
336 | |||
337 | int msmfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) | ||
338 | { | ||
339 | struct msmfb_info *msmfb = info->par; | ||
340 | struct msm_panel_data *panel = msmfb->panel; | ||
341 | |||
342 | /* "UPDT" */ | ||
343 | if ((panel->caps & MSMFB_CAP_PARTIAL_UPDATES) && | ||
344 | (var->reserved[0] == 0x54445055)) { | ||
345 | msmfb_pan_update(info, var->reserved[1] & 0xffff, | ||
346 | var->reserved[1] >> 16, | ||
347 | var->reserved[2] & 0xffff, | ||
348 | var->reserved[2] >> 16, var->yoffset, 1); | ||
349 | } else { | ||
350 | msmfb_pan_update(info, 0, 0, info->var.xres, info->var.yres, | ||
351 | var->yoffset, 1); | ||
352 | } | ||
353 | return 0; | ||
354 | } | ||
355 | |||
356 | static void msmfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect) | ||
357 | { | ||
358 | cfb_fillrect(p, rect); | ||
359 | msmfb_update(p, rect->dx, rect->dy, rect->dx + rect->width, | ||
360 | rect->dy + rect->height); | ||
361 | } | ||
362 | |||
363 | static void msmfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) | ||
364 | { | ||
365 | cfb_copyarea(p, area); | ||
366 | msmfb_update(p, area->dx, area->dy, area->dx + area->width, | ||
367 | area->dy + area->height); | ||
368 | } | ||
369 | |||
370 | static void msmfb_imageblit(struct fb_info *p, const struct fb_image *image) | ||
371 | { | ||
372 | cfb_imageblit(p, image); | ||
373 | msmfb_update(p, image->dx, image->dy, image->dx + image->width, | ||
374 | image->dy + image->height); | ||
375 | } | ||
376 | |||
377 | |||
378 | static int msmfb_blit(struct fb_info *info, | ||
379 | void __user *p) | ||
380 | { | ||
381 | struct mdp_blit_req req; | ||
382 | struct mdp_blit_req_list req_list; | ||
383 | int i; | ||
384 | int ret; | ||
385 | |||
386 | if (copy_from_user(&req_list, p, sizeof(req_list))) | ||
387 | return -EFAULT; | ||
388 | |||
389 | for (i = 0; i < req_list.count; i++) { | ||
390 | struct mdp_blit_req_list *list = | ||
391 | (struct mdp_blit_req_list *)p; | ||
392 | if (copy_from_user(&req, &list->req[i], sizeof(req))) | ||
393 | return -EFAULT; | ||
394 | ret = mdp->blit(mdp, info, &req); | ||
395 | if (ret) | ||
396 | return ret; | ||
397 | } | ||
398 | return 0; | ||
399 | } | ||
400 | |||
401 | |||
402 | DEFINE_MUTEX(mdp_ppp_lock); | ||
403 | |||
404 | static int msmfb_ioctl(struct fb_info *p, unsigned int cmd, unsigned long arg) | ||
405 | { | ||
406 | void __user *argp = (void __user *)arg; | ||
407 | int ret; | ||
408 | |||
409 | switch (cmd) { | ||
410 | case MSMFB_GRP_DISP: | ||
411 | mdp->set_grp_disp(mdp, arg); | ||
412 | break; | ||
413 | case MSMFB_BLIT: | ||
414 | ret = msmfb_blit(p, argp); | ||
415 | if (ret) | ||
416 | return ret; | ||
417 | break; | ||
418 | default: | ||
419 | printk(KERN_INFO "msmfb unknown ioctl: %d\n", cmd); | ||
420 | return -EINVAL; | ||
421 | } | ||
422 | return 0; | ||
423 | } | ||
424 | |||
425 | static struct fb_ops msmfb_ops = { | ||
426 | .owner = THIS_MODULE, | ||
427 | .fb_open = msmfb_open, | ||
428 | .fb_release = msmfb_release, | ||
429 | .fb_check_var = msmfb_check_var, | ||
430 | .fb_pan_display = msmfb_pan_display, | ||
431 | .fb_fillrect = msmfb_fillrect, | ||
432 | .fb_copyarea = msmfb_copyarea, | ||
433 | .fb_imageblit = msmfb_imageblit, | ||
434 | .fb_ioctl = msmfb_ioctl, | ||
435 | }; | ||
436 | |||
437 | static unsigned PP[16]; | ||
438 | |||
439 | |||
440 | |||
441 | #define BITS_PER_PIXEL 16 | ||
442 | |||
443 | static void setup_fb_info(struct msmfb_info *msmfb) | ||
444 | { | ||
445 | struct fb_info *fb_info = msmfb->fb; | ||
446 | int r; | ||
447 | |||
448 | /* finish setting up the fb_info struct */ | ||
449 | strncpy(fb_info->fix.id, "msmfb", 16); | ||
450 | fb_info->fix.ypanstep = 1; | ||
451 | |||
452 | fb_info->fbops = &msmfb_ops; | ||
453 | fb_info->flags = FBINFO_DEFAULT; | ||
454 | |||
455 | fb_info->fix.type = FB_TYPE_PACKED_PIXELS; | ||
456 | fb_info->fix.visual = FB_VISUAL_TRUECOLOR; | ||
457 | fb_info->fix.line_length = msmfb->xres * 2; | ||
458 | |||
459 | fb_info->var.xres = msmfb->xres; | ||
460 | fb_info->var.yres = msmfb->yres; | ||
461 | fb_info->var.width = msmfb->panel->fb_data->width; | ||
462 | fb_info->var.height = msmfb->panel->fb_data->height; | ||
463 | fb_info->var.xres_virtual = msmfb->xres; | ||
464 | fb_info->var.yres_virtual = msmfb->yres * 2; | ||
465 | fb_info->var.bits_per_pixel = BITS_PER_PIXEL; | ||
466 | fb_info->var.accel_flags = 0; | ||
467 | |||
468 | fb_info->var.yoffset = 0; | ||
469 | |||
470 | if (msmfb->panel->caps & MSMFB_CAP_PARTIAL_UPDATES) { | ||
471 | /* | ||
472 | * Set the param in the fixed screen, so userspace can't | ||
473 | * change it. This will be used to check for the | ||
474 | * capability. | ||
475 | */ | ||
476 | fb_info->fix.reserved[0] = 0x5444; | ||
477 | fb_info->fix.reserved[1] = 0x5055; | ||
478 | |||
479 | /* | ||
480 | * This preloads the value so that if userspace doesn't | ||
481 | * change it, it will be a full update | ||
482 | */ | ||
483 | fb_info->var.reserved[0] = 0x54445055; | ||
484 | fb_info->var.reserved[1] = 0; | ||
485 | fb_info->var.reserved[2] = (uint16_t)msmfb->xres | | ||
486 | ((uint32_t)msmfb->yres << 16); | ||
487 | } | ||
488 | |||
489 | fb_info->var.red.offset = 11; | ||
490 | fb_info->var.red.length = 5; | ||
491 | fb_info->var.red.msb_right = 0; | ||
492 | fb_info->var.green.offset = 5; | ||
493 | fb_info->var.green.length = 6; | ||
494 | fb_info->var.green.msb_right = 0; | ||
495 | fb_info->var.blue.offset = 0; | ||
496 | fb_info->var.blue.length = 5; | ||
497 | fb_info->var.blue.msb_right = 0; | ||
498 | |||
499 | r = fb_alloc_cmap(&fb_info->cmap, 16, 0); | ||
500 | fb_info->pseudo_palette = PP; | ||
501 | |||
502 | PP[0] = 0; | ||
503 | for (r = 1; r < 16; r++) | ||
504 | PP[r] = 0xffffffff; | ||
505 | } | ||
506 | |||
507 | static int setup_fbmem(struct msmfb_info *msmfb, struct platform_device *pdev) | ||
508 | { | ||
509 | struct fb_info *fb = msmfb->fb; | ||
510 | struct resource *resource; | ||
511 | unsigned long size = msmfb->xres * msmfb->yres * | ||
512 | (BITS_PER_PIXEL >> 3) * 2; | ||
513 | unsigned char *fbram; | ||
514 | |||
515 | /* board file might have attached a resource describing an fb */ | ||
516 | resource = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
517 | if (!resource) | ||
518 | return -EINVAL; | ||
519 | |||
520 | /* check the resource is large enough to fit the fb */ | ||
521 | if (resource->end - resource->start < size) { | ||
522 | printk(KERN_ERR "allocated resource is too small for " | ||
523 | "fb\n"); | ||
524 | return -ENOMEM; | ||
525 | } | ||
526 | fb->fix.smem_start = resource->start; | ||
527 | fb->fix.smem_len = resource_size(resource); | ||
528 | fbram = ioremap(resource->start, resource_size(resource)); | ||
529 | if (fbram == NULL) { | ||
530 | printk(KERN_ERR "msmfb: cannot allocate fbram!\n"); | ||
531 | return -ENOMEM; | ||
532 | } | ||
533 | fb->screen_base = fbram; | ||
534 | return 0; | ||
535 | } | ||
536 | |||
537 | static int msmfb_probe(struct platform_device *pdev) | ||
538 | { | ||
539 | struct fb_info *fb; | ||
540 | struct msmfb_info *msmfb; | ||
541 | struct msm_panel_data *panel = pdev->dev.platform_data; | ||
542 | int ret; | ||
543 | |||
544 | if (!panel) { | ||
545 | pr_err("msmfb_probe: no platform data\n"); | ||
546 | return -EINVAL; | ||
547 | } | ||
548 | if (!panel->fb_data) { | ||
549 | pr_err("msmfb_probe: no fb_data\n"); | ||
550 | return -EINVAL; | ||
551 | } | ||
552 | |||
553 | fb = framebuffer_alloc(sizeof(struct msmfb_info), &pdev->dev); | ||
554 | if (!fb) | ||
555 | return -ENOMEM; | ||
556 | msmfb = fb->par; | ||
557 | msmfb->fb = fb; | ||
558 | msmfb->panel = panel; | ||
559 | msmfb->xres = panel->fb_data->xres; | ||
560 | msmfb->yres = panel->fb_data->yres; | ||
561 | |||
562 | ret = setup_fbmem(msmfb, pdev); | ||
563 | if (ret) | ||
564 | goto error_setup_fbmem; | ||
565 | |||
566 | setup_fb_info(msmfb); | ||
567 | |||
568 | spin_lock_init(&msmfb->update_lock); | ||
569 | mutex_init(&msmfb->panel_init_lock); | ||
570 | init_waitqueue_head(&msmfb->frame_wq); | ||
571 | INIT_WORK(&msmfb->resume_work, power_on_panel); | ||
572 | msmfb->black = kzalloc(msmfb->fb->var.bits_per_pixel*msmfb->xres, | ||
573 | GFP_KERNEL); | ||
574 | |||
575 | printk(KERN_INFO "msmfb_probe() installing %d x %d panel\n", | ||
576 | msmfb->xres, msmfb->yres); | ||
577 | |||
578 | msmfb->dma_callback.func = msmfb_handle_dma_interrupt; | ||
579 | msmfb->vsync_callback.func = msmfb_handle_vsync_interrupt; | ||
580 | hrtimer_init(&msmfb->fake_vsync, CLOCK_MONOTONIC, | ||
581 | HRTIMER_MODE_REL); | ||
582 | |||
583 | |||
584 | msmfb->fake_vsync.function = msmfb_fake_vsync; | ||
585 | |||
586 | ret = register_framebuffer(fb); | ||
587 | if (ret) | ||
588 | goto error_register_framebuffer; | ||
589 | |||
590 | msmfb->sleeping = WAKING; | ||
591 | |||
592 | return 0; | ||
593 | |||
594 | error_register_framebuffer: | ||
595 | iounmap(fb->screen_base); | ||
596 | error_setup_fbmem: | ||
597 | framebuffer_release(msmfb->fb); | ||
598 | return ret; | ||
599 | } | ||
600 | |||
601 | static struct platform_driver msm_panel_driver = { | ||
602 | /* need to write remove */ | ||
603 | .probe = msmfb_probe, | ||
604 | .driver = {.name = "msm_panel"}, | ||
605 | }; | ||
606 | |||
607 | |||
608 | static int msmfb_add_mdp_device(struct device *dev, | ||
609 | struct class_interface *class_intf) | ||
610 | { | ||
611 | /* might need locking if mulitple mdp devices */ | ||
612 | if (mdp) | ||
613 | return 0; | ||
614 | mdp = container_of(dev, struct mdp_device, dev); | ||
615 | return platform_driver_register(&msm_panel_driver); | ||
616 | } | ||
617 | |||
618 | static void msmfb_remove_mdp_device(struct device *dev, | ||
619 | struct class_interface *class_intf) | ||
620 | { | ||
621 | /* might need locking if mulitple mdp devices */ | ||
622 | if (dev != &mdp->dev) | ||
623 | return; | ||
624 | platform_driver_unregister(&msm_panel_driver); | ||
625 | mdp = NULL; | ||
626 | } | ||
627 | |||
628 | static struct class_interface msm_fb_interface = { | ||
629 | .add_dev = &msmfb_add_mdp_device, | ||
630 | .remove_dev = &msmfb_remove_mdp_device, | ||
631 | }; | ||
632 | |||
633 | static int __init msmfb_init(void) | ||
634 | { | ||
635 | return register_mdp_client(&msm_fb_interface); | ||
636 | } | ||
637 | |||
638 | module_init(msmfb_init); | ||