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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / video / omap / blizzard.c
blob2ffb34af4c59ed2c7ea342c1a627aa1b0a5f1832
1 /*
2 * Epson Blizzard LCD controller driver
3 *
4 * Copyright (C) 2004-2005 Nokia Corporation
5 * Authors: Juha Yrjola <juha.yrjola@nokia.com>
6 * Imre Deak <imre.deak@nokia.com>
7 * YUV support: Jussi Laako <jussi.laako@nokia.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 */
23 #include <linux/module.h>
24 #include <linux/mm.h>
25 #include <linux/fb.h>
26 #include <linux/delay.h>
27 #include <linux/clk.h>
28
29 #include <plat/dma.h>
30 #include <plat/blizzard.h>
31
32 #include "omapfb.h"
33 #include "dispc.h"
34
35 #define MODULE_NAME "blizzard"
36
37 #define BLIZZARD_REV_CODE 0x00
38 #define BLIZZARD_CONFIG 0x02
39 #define BLIZZARD_PLL_DIV 0x04
40 #define BLIZZARD_PLL_LOCK_RANGE 0x06
41 #define BLIZZARD_PLL_CLOCK_SYNTH_0 0x08
42 #define BLIZZARD_PLL_CLOCK_SYNTH_1 0x0a
43 #define BLIZZARD_PLL_MODE 0x0c
44 #define BLIZZARD_CLK_SRC 0x0e
45 #define BLIZZARD_MEM_BANK0_ACTIVATE 0x10
46 #define BLIZZARD_MEM_BANK0_STATUS 0x14
47 #define BLIZZARD_PANEL_CONFIGURATION 0x28
48 #define BLIZZARD_HDISP 0x2a
49 #define BLIZZARD_HNDP 0x2c
50 #define BLIZZARD_VDISP0 0x2e
51 #define BLIZZARD_VDISP1 0x30
52 #define BLIZZARD_VNDP 0x32
53 #define BLIZZARD_HSW 0x34
54 #define BLIZZARD_VSW 0x38
55 #define BLIZZARD_DISPLAY_MODE 0x68
56 #define BLIZZARD_INPUT_WIN_X_START_0 0x6c
57 #define BLIZZARD_DATA_SOURCE_SELECT 0x8e
58 #define BLIZZARD_DISP_MEM_DATA_PORT 0x90
59 #define BLIZZARD_DISP_MEM_READ_ADDR0 0x92
60 #define BLIZZARD_POWER_SAVE 0xE6
61 #define BLIZZARD_NDISP_CTRL_STATUS 0xE8
62
63 /* Data source select */
64 /* For S1D13745 */
65 #define BLIZZARD_SRC_WRITE_LCD_BACKGROUND 0x00
66 #define BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE 0x01
67 #define BLIZZARD_SRC_WRITE_OVERLAY_ENABLE 0x04
68 #define BLIZZARD_SRC_DISABLE_OVERLAY 0x05
69 /* For S1D13744 */
70 #define BLIZZARD_SRC_WRITE_LCD 0x00
71 #define BLIZZARD_SRC_BLT_LCD 0x06
72
73 #define BLIZZARD_COLOR_RGB565 0x01
74 #define BLIZZARD_COLOR_YUV420 0x09
75
76 #define BLIZZARD_VERSION_S1D13745 0x01 /* Hailstorm */
77 #define BLIZZARD_VERSION_S1D13744 0x02 /* Blizzard */
78
79 #define BLIZZARD_AUTO_UPDATE_TIME (HZ / 20)
80
81 /* Reserve 4 request slots for requests in irq context */
82 #define REQ_POOL_SIZE 24
83 #define IRQ_REQ_POOL_SIZE 4
84
85 #define REQ_FROM_IRQ_POOL 0x01
86
87 #define REQ_COMPLETE 0
88 #define REQ_PENDING 1
89
90 struct blizzard_reg_list {
91 int start;
92 int end;
93 };
94
95 /* These need to be saved / restored separately from the rest. */
96 static const struct blizzard_reg_list blizzard_pll_regs[] = {
97 {
98 .start = 0x04, /* Don't save PLL ctrl (0x0C) */
99 .end = 0x0a,
100 },
101 {
102 .start = 0x0e, /* Clock configuration */
103 .end = 0x0e,
104 },
105 };
106
107 static const struct blizzard_reg_list blizzard_gen_regs[] = {
108 {
109 .start = 0x18, /* SDRAM control */
110 .end = 0x20,
111 },
112 {
113 .start = 0x28, /* LCD Panel configuration */
114 .end = 0x5a, /* HSSI interface, TV configuration */
115 },
116 };
117
118 static u8 blizzard_reg_cache[0x5a / 2];
119
120 struct update_param {
121 int plane;
122 int x, y, width, height;
123 int out_x, out_y;
124 int out_width, out_height;
125 int color_mode;
126 int bpp;
127 int flags;
128 };
129
130 struct blizzard_request {
131 struct list_head entry;
132 unsigned int flags;
133
134 int (*handler)(struct blizzard_request *req);
135 void (*complete)(void *data);
136 void *complete_data;
137
138 union {
139 struct update_param update;
140 struct completion *sync;
141 } par;
142 };
143
144 struct plane_info {
145 unsigned long offset;
146 int pos_x, pos_y;
147 int width, height;
148 int out_width, out_height;
149 int scr_width;
150 int color_mode;
151 int bpp;
152 };
153
154 struct blizzard_struct {
155 enum omapfb_update_mode update_mode;
156 enum omapfb_update_mode update_mode_before_suspend;
157
158 struct timer_list auto_update_timer;
159 int stop_auto_update;
160 struct omapfb_update_window auto_update_window;
161 int enabled_planes;
162 int vid_nonstd_color;
163 int vid_scaled;
164 int last_color_mode;
165 int zoom_on;
166 int zoom_area_gx1;
167 int zoom_area_gx2;
168 int zoom_area_gy1;
169 int zoom_area_gy2;
170 int screen_width;
171 int screen_height;
172 unsigned te_connected:1;
173 unsigned vsync_only:1;
174
175 struct plane_info plane[OMAPFB_PLANE_NUM];
176
177 struct blizzard_request req_pool[REQ_POOL_SIZE];
178 struct list_head pending_req_list;
179 struct list_head free_req_list;
180 struct semaphore req_sema;
181 spinlock_t req_lock;
182
183 unsigned long sys_ck_rate;
184 struct extif_timings reg_timings, lut_timings;
185
186 u32 max_transmit_size;
187 u32 extif_clk_period;
188 int extif_clk_div;
189 unsigned long pix_tx_time;
190 unsigned long line_upd_time;
191
192 struct omapfb_device *fbdev;
193 struct lcd_ctrl_extif *extif;
194 const struct lcd_ctrl *int_ctrl;
195
196 void (*power_up)(struct device *dev);
197 void (*power_down)(struct device *dev);
198
199 int version;
200 } blizzard;
201
202 struct lcd_ctrl blizzard_ctrl;
203
204 static u8 blizzard_read_reg(u8 reg)
205 {
206 u8 data;
207
208 blizzard.extif->set_bits_per_cycle(8);
209 blizzard.extif->write_command(&reg, 1);
210 blizzard.extif->read_data(&data, 1);
211
212 return data;
213 }
214
215 static void blizzard_write_reg(u8 reg, u8 val)
216 {
217 blizzard.extif->set_bits_per_cycle(8);
218 blizzard.extif->write_command(&reg, 1);
219 blizzard.extif->write_data(&val, 1);
220 }
221
222 static void blizzard_restart_sdram(void)
223 {
224 unsigned long tmo;
225
226 blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
227 udelay(50);
228 blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 1);
229 tmo = jiffies + msecs_to_jiffies(200);
230 while (!(blizzard_read_reg(BLIZZARD_MEM_BANK0_STATUS) & 0x01)) {
231 if (time_after(jiffies, tmo)) {
232 dev_err(blizzard.fbdev->dev,
233 "s1d1374x: SDRAM not ready\n");
234 break;
235 }
236 msleep(1);
237 }
238 }
239
240 static void blizzard_stop_sdram(void)
241 {
242 blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
243 }
244
245 /* Wait until the last window was completely written into the controllers
246 * SDRAM and we can start transferring the next window.
247 */
248 static void blizzard_wait_line_buffer(void)
249 {
250 unsigned long tmo = jiffies + msecs_to_jiffies(30);
251
252 while (blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS) & (1 << 7)) {
253 if (time_after(jiffies, tmo)) {
254 if (printk_ratelimit())
255 dev_err(blizzard.fbdev->dev,
256 "s1d1374x: line buffer not ready\n");
257 break;
258 }
259 }
260 }
261
262 /* Wait until the YYC color space converter is idle. */
263 static void blizzard_wait_yyc(void)
264 {
265 unsigned long tmo = jiffies + msecs_to_jiffies(30);
266
267 while (blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS) & (1 << 4)) {
268 if (time_after(jiffies, tmo)) {
269 if (printk_ratelimit())
270 dev_err(blizzard.fbdev->dev,
271 "s1d1374x: YYC not ready\n");
272 break;
273 }
274 }
275 }
276
277 static void disable_overlay(void)
278 {
279 blizzard_write_reg(BLIZZARD_DATA_SOURCE_SELECT,
280 BLIZZARD_SRC_DISABLE_OVERLAY);
281 }
282
283 static void set_window_regs(int x_start, int y_start, int x_end, int y_end,
284 int x_out_start, int y_out_start,
285 int x_out_end, int y_out_end, int color_mode,
286 int zoom_off, int flags)
287 {
288 u8 tmp[18];
289 u8 cmd;
290
291 x_end--;
292 y_end--;
293 tmp[0] = x_start;
294 tmp[1] = x_start >> 8;
295 tmp[2] = y_start;
296 tmp[3] = y_start >> 8;
297 tmp[4] = x_end;
298 tmp[5] = x_end >> 8;
299 tmp[6] = y_end;
300 tmp[7] = y_end >> 8;
301
302 x_out_end--;
303 y_out_end--;
304 tmp[8] = x_out_start;
305 tmp[9] = x_out_start >> 8;
306 tmp[10] = y_out_start;
307 tmp[11] = y_out_start >> 8;
308 tmp[12] = x_out_end;
309 tmp[13] = x_out_end >> 8;
310 tmp[14] = y_out_end;
311 tmp[15] = y_out_end >> 8;
312
313 tmp[16] = color_mode;
314 if (zoom_off && blizzard.version == BLIZZARD_VERSION_S1D13745)
315 tmp[17] = BLIZZARD_SRC_WRITE_LCD_BACKGROUND;
316 else if (flags & OMAPFB_FORMAT_FLAG_ENABLE_OVERLAY)
317 tmp[17] = BLIZZARD_SRC_WRITE_OVERLAY_ENABLE;
318 else
319 tmp[17] = blizzard.version == BLIZZARD_VERSION_S1D13744 ?
320 BLIZZARD_SRC_WRITE_LCD :
321 BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE;
322
323 blizzard.extif->set_bits_per_cycle(8);
324 cmd = BLIZZARD_INPUT_WIN_X_START_0;
325 blizzard.extif->write_command(&cmd, 1);
326 blizzard.extif->write_data(tmp, 18);
327 }
328
329 static void enable_tearsync(int y, int width, int height, int screen_height,
330 int out_height, int force_vsync)
331 {
332 u8 b;
333
334 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
335 b |= 1 << 3;
336 blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
337
338 if (likely(blizzard.vsync_only || force_vsync)) {
339 blizzard.extif->enable_tearsync(1, 0);
340 return;
341 }
342
343 if (width * blizzard.pix_tx_time < blizzard.line_upd_time) {
344 blizzard.extif->enable_tearsync(1, 0);
345 return;
346 }
347
348 if ((width * blizzard.pix_tx_time / 1000) * height <
349 (y + out_height) * (blizzard.line_upd_time / 1000)) {
350 blizzard.extif->enable_tearsync(1, 0);
351 return;
352 }
353
354 blizzard.extif->enable_tearsync(1, y + 1);
355 }
356
357 static void disable_tearsync(void)
358 {
359 u8 b;
360
361 blizzard.extif->enable_tearsync(0, 0);
362 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
363 b &= ~(1 << 3);
364 blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
365 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
366 }
367
368 static inline void set_extif_timings(const struct extif_timings *t);
369
370 static inline struct blizzard_request *alloc_req(void)
371 {
372 unsigned long flags;
373 struct blizzard_request *req;
374 int req_flags = 0;
375
376 if (!in_interrupt())
377 down(&blizzard.req_sema);
378 else
379 req_flags = REQ_FROM_IRQ_POOL;
380
381 spin_lock_irqsave(&blizzard.req_lock, flags);
382 BUG_ON(list_empty(&blizzard.free_req_list));
383 req = list_entry(blizzard.free_req_list.next,
384 struct blizzard_request, entry);
385 list_del(&req->entry);
386 spin_unlock_irqrestore(&blizzard.req_lock, flags);
387
388 INIT_LIST_HEAD(&req->entry);
389 req->flags = req_flags;
390
391 return req;
392 }
393
394 static inline void free_req(struct blizzard_request *req)
395 {
396 unsigned long flags;
397
398 spin_lock_irqsave(&blizzard.req_lock, flags);
399
400 list_del(&req->entry);
401 list_add(&req->entry, &blizzard.free_req_list);
402 if (!(req->flags & REQ_FROM_IRQ_POOL))
403 up(&blizzard.req_sema);
404
405 spin_unlock_irqrestore(&blizzard.req_lock, flags);
406 }
407
408 static void process_pending_requests(void)
409 {
410 unsigned long flags;
411
412 spin_lock_irqsave(&blizzard.req_lock, flags);
413
414 while (!list_empty(&blizzard.pending_req_list)) {
415 struct blizzard_request *req;
416 void (*complete)(void *);
417 void *complete_data;
418
419 req = list_entry(blizzard.pending_req_list.next,
420 struct blizzard_request, entry);
421 spin_unlock_irqrestore(&blizzard.req_lock, flags);
422
423 if (req->handler(req) == REQ_PENDING)
424 return;
425
426 complete = req->complete;
427 complete_data = req->complete_data;
428 free_req(req);
429
430 if (complete)
431 complete(complete_data);
432
433 spin_lock_irqsave(&blizzard.req_lock, flags);
434 }
435
436 spin_unlock_irqrestore(&blizzard.req_lock, flags);
437 }
438
439 static void submit_req_list(struct list_head *head)
440 {
441 unsigned long flags;
442 int process = 1;
443
444 spin_lock_irqsave(&blizzard.req_lock, flags);
445 if (likely(!list_empty(&blizzard.pending_req_list)))
446 process = 0;
447 list_splice_init(head, blizzard.pending_req_list.prev);
448 spin_unlock_irqrestore(&blizzard.req_lock, flags);
449
450 if (process)
451 process_pending_requests();
452 }
453
454 static void request_complete(void *data)
455 {
456 struct blizzard_request *req = (struct blizzard_request *)data;
457 void (*complete)(void *);
458 void *complete_data;
459
460 complete = req->complete;
461 complete_data = req->complete_data;
462
463 free_req(req);
464
465 if (complete)
466 complete(complete_data);
467
468 process_pending_requests();
469 }
470
471
472 static int do_full_screen_update(struct blizzard_request *req)
473 {
474 int i;
475 int flags;
476
477 for (i = 0; i < 3; i++) {
478 struct plane_info *p = &blizzard.plane[i];
479 if (!(blizzard.enabled_planes & (1 << i))) {
480 blizzard.int_ctrl->enable_plane(i, 0);
481 continue;
482 }
483 dev_dbg(blizzard.fbdev->dev, "pw %d ph %d\n",
484 p->width, p->height);
485 blizzard.int_ctrl->setup_plane(i,
486 OMAPFB_CHANNEL_OUT_LCD, p->offset,
487 p->scr_width, p->pos_x, p->pos_y,
488 p->width, p->height,
489 p->color_mode);
490 blizzard.int_ctrl->enable_plane(i, 1);
491 }
492
493 dev_dbg(blizzard.fbdev->dev, "sw %d sh %d\n",
494 blizzard.screen_width, blizzard.screen_height);
495 blizzard_wait_line_buffer();
496 flags = req->par.update.flags;
497 if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
498 enable_tearsync(0, blizzard.screen_width,
499 blizzard.screen_height,
500 blizzard.screen_height,
501 blizzard.screen_height,
502 flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
503 else
504 disable_tearsync();
505
506 set_window_regs(0, 0, blizzard.screen_width, blizzard.screen_height,
507 0, 0, blizzard.screen_width, blizzard.screen_height,
508 BLIZZARD_COLOR_RGB565, blizzard.zoom_on, flags);
509 blizzard.zoom_on = 0;
510
511 blizzard.extif->set_bits_per_cycle(16);
512 /* set_window_regs has left the register index at the right
513 * place, so no need to set it here.
514 */
515 blizzard.extif->transfer_area(blizzard.screen_width,
516 blizzard.screen_height,
517 request_complete, req);
518 return REQ_PENDING;
519 }
520
521 static int check_1d_intersect(int a1, int a2, int b1, int b2)
522 {
523 if (a2 <= b1 || b2 <= a1)
524 return 0;
525 return 1;
526 }
527
528 /* Setup all planes with an overlapping area with the update window. */
529 static int do_partial_update(struct blizzard_request *req, int plane,
530 int x, int y, int w, int h,
531 int x_out, int y_out, int w_out, int h_out,
532 int wnd_color_mode, int bpp)
533 {
534 int i;
535 int gx1, gy1, gx2, gy2;
536 int gx1_out, gy1_out, gx2_out, gy2_out;
537 int color_mode;
538 int flags;
539 int zoom_off;
540 int have_zoom_for_this_update = 0;
541
542 /* Global coordinates, relative to pixel 0,0 of the LCD */
543 gx1 = x + blizzard.plane[plane].pos_x;
544 gy1 = y + blizzard.plane[plane].pos_y;
545 gx2 = gx1 + w;
546 gy2 = gy1 + h;
547
548 flags = req->par.update.flags;
549 if (flags & OMAPFB_FORMAT_FLAG_DOUBLE) {
550 gx1_out = gx1;
551 gy1_out = gy1;
552 gx2_out = gx1 + w * 2;
553 gy2_out = gy1 + h * 2;
554 } else {
555 gx1_out = x_out + blizzard.plane[plane].pos_x;
556 gy1_out = y_out + blizzard.plane[plane].pos_y;
557 gx2_out = gx1_out + w_out;
558 gy2_out = gy1_out + h_out;
559 }
560
561 for (i = 0; i < OMAPFB_PLANE_NUM; i++) {
562 struct plane_info *p = &blizzard.plane[i];
563 int px1, py1;
564 int px2, py2;
565 int pw, ph;
566 int pposx, pposy;
567 unsigned long offset;
568
569 if (!(blizzard.enabled_planes & (1 << i)) ||
570 (wnd_color_mode && i != plane)) {
571 blizzard.int_ctrl->enable_plane(i, 0);
572 continue;
573 }
574 /* Plane coordinates */
575 if (i == plane) {
576 /* Plane in which we are doing the update.
577 * Local coordinates are the one in the update
578 * request.
579 */
580 px1 = x;
581 py1 = y;
582 px2 = x + w;
583 py2 = y + h;
584 pposx = 0;
585 pposy = 0;
586 } else {
587 /* Check if this plane has an overlapping part */
588 px1 = gx1 - p->pos_x;
589 py1 = gy1 - p->pos_y;
590 px2 = gx2 - p->pos_x;
591 py2 = gy2 - p->pos_y;
592 if (px1 >= p->width || py1 >= p->height ||
593 px2 <= 0 || py2 <= 0) {
594 blizzard.int_ctrl->enable_plane(i, 0);
595 continue;
596 }
597 /* Calculate the coordinates for the overlapping
598 * part in the plane's local coordinates.
599 */
600 pposx = -px1;
601 pposy = -py1;
602 if (px1 < 0)
603 px1 = 0;
604 if (py1 < 0)
605 py1 = 0;
606 if (px2 > p->width)
607 px2 = p->width;
608 if (py2 > p->height)
609 py2 = p->height;
610 if (pposx < 0)
611 pposx = 0;
612 if (pposy < 0)
613 pposy = 0;
614 }
615 pw = px2 - px1;
616 ph = py2 - py1;
617 offset = p->offset + (p->scr_width * py1 + px1) * p->bpp / 8;
618 if (wnd_color_mode)
619 /* Window embedded in the plane with a differing
620 * color mode / bpp. Calculate the number of DMA
621 * transfer elements in terms of the plane's bpp.
622 */
623 pw = (pw + 1) * bpp / p->bpp;
624 #ifdef VERBOSE
625 dev_dbg(blizzard.fbdev->dev,
626 "plane %d offset %#08lx pposx %d pposy %d "
627 "px1 %d py1 %d pw %d ph %d\n",
628 i, offset, pposx, pposy, px1, py1, pw, ph);
629 #endif
630 blizzard.int_ctrl->setup_plane(i,
631 OMAPFB_CHANNEL_OUT_LCD, offset,
632 p->scr_width,
633 pposx, pposy, pw, ph,
634 p->color_mode);
635
636 blizzard.int_ctrl->enable_plane(i, 1);
637 }
638
639 switch (wnd_color_mode) {
640 case OMAPFB_COLOR_YUV420:
641 color_mode = BLIZZARD_COLOR_YUV420;
642 /* Currently only the 16 bits/pixel cycle format is
643 * supported on the external interface. Adjust the number
644 * of transfer elements per line for 12bpp format.
645 */
646 w = (w + 1) * 3 / 4;
647 break;
648 default:
649 color_mode = BLIZZARD_COLOR_RGB565;
650 break;
651 }
652
653 blizzard_wait_line_buffer();
654 if (blizzard.last_color_mode == BLIZZARD_COLOR_YUV420)
655 blizzard_wait_yyc();
656 blizzard.last_color_mode = color_mode;
657 if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
658 enable_tearsync(gy1, w, h,
659 blizzard.screen_height,
660 h_out,
661 flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
662 else
663 disable_tearsync();
664
665 if ((gx2_out - gx1_out) != (gx2 - gx1) ||
666 (gy2_out - gy1_out) != (gy2 - gy1))
667 have_zoom_for_this_update = 1;
668
669 /* 'background' type of screen update (as opposed to 'destructive')
670 can be used to disable scaling if scaling is active */
671 zoom_off = blizzard.zoom_on && !have_zoom_for_this_update &&
672 (gx1_out == 0) && (gx2_out == blizzard.screen_width) &&
673 (gy1_out == 0) && (gy2_out == blizzard.screen_height) &&
674 (gx1 == 0) && (gy1 == 0);
675
676 if (blizzard.zoom_on && !have_zoom_for_this_update && !zoom_off &&
677 check_1d_intersect(blizzard.zoom_area_gx1, blizzard.zoom_area_gx2,
678 gx1_out, gx2_out) &&
679 check_1d_intersect(blizzard.zoom_area_gy1, blizzard.zoom_area_gy2,
680 gy1_out, gy2_out)) {
681 /* Previous screen update was using scaling, current update
682 * is not using it. Additionally, current screen update is
683 * going to overlap with the scaled area. Scaling needs to be
684 * disabled in order to avoid 'magnifying glass' effect.
685 * Dummy setup of background window can be used for this.
686 */
687 set_window_regs(0, 0, blizzard.screen_width,
688 blizzard.screen_height,
689 0, 0, blizzard.screen_width,
690 blizzard.screen_height,
691 BLIZZARD_COLOR_RGB565, 1, flags);
692 blizzard.zoom_on = 0;
693 }
694
695 /* remember scaling settings if we have scaled update */
696 if (have_zoom_for_this_update) {
697 blizzard.zoom_on = 1;
698 blizzard.zoom_area_gx1 = gx1_out;
699 blizzard.zoom_area_gx2 = gx2_out;
700 blizzard.zoom_area_gy1 = gy1_out;
701 blizzard.zoom_area_gy2 = gy2_out;
702 }
703
704 set_window_regs(gx1, gy1, gx2, gy2, gx1_out, gy1_out, gx2_out, gy2_out,
705 color_mode, zoom_off, flags);
706 if (zoom_off)
707 blizzard.zoom_on = 0;
708
709 blizzard.extif->set_bits_per_cycle(16);
710 /* set_window_regs has left the register index at the right
711 * place, so no need to set it here.
712 */
713 blizzard.extif->transfer_area(w, h, request_complete, req);
714
715 return REQ_PENDING;
716 }
717
718 static int send_frame_handler(struct blizzard_request *req)
719 {
720 struct update_param *par = &req->par.update;
721 int plane = par->plane;
722
723 #ifdef VERBOSE
724 dev_dbg(blizzard.fbdev->dev,
725 "send_frame: x %d y %d w %d h %d "
726 "x_out %d y_out %d w_out %d h_out %d "
727 "color_mode %04x flags %04x planes %01x\n",
728 par->x, par->y, par->width, par->height,
729 par->out_x, par->out_y, par->out_width, par->out_height,
730 par->color_mode, par->flags, blizzard.enabled_planes);
731 #endif
732 if (par->flags & OMAPFB_FORMAT_FLAG_DISABLE_OVERLAY)
733 disable_overlay();
734
735 if ((blizzard.enabled_planes & blizzard.vid_nonstd_color) ||
736 (blizzard.enabled_planes & blizzard.vid_scaled))
737 return do_full_screen_update(req);
738
739 return do_partial_update(req, plane, par->x, par->y,
740 par->width, par->height,
741 par->out_x, par->out_y,
742 par->out_width, par->out_height,
743 par->color_mode, par->bpp);
744 }
745
746 static void send_frame_complete(void *data)
747 {
748 }
749
750 #define ADD_PREQ(_x, _y, _w, _h, _x_out, _y_out, _w_out, _h_out) do { \
751 req = alloc_req(); \
752 req->handler = send_frame_handler; \
753 req->complete = send_frame_complete; \
754 req->par.update.plane = plane_idx; \
755 req->par.update.x = _x; \
756 req->par.update.y = _y; \
757 req->par.update.width = _w; \
758 req->par.update.height = _h; \
759 req->par.update.out_x = _x_out; \
760 req->par.update.out_y = _y_out; \
761 req->par.update.out_width = _w_out; \
762 req->par.update.out_height = _h_out; \
763 req->par.update.bpp = bpp; \
764 req->par.update.color_mode = color_mode;\
765 req->par.update.flags = flags; \
766 list_add_tail(&req->entry, req_head); \
767 } while(0)
768
769 static void create_req_list(int plane_idx,
770 struct omapfb_update_window *win,
771 struct list_head *req_head)
772 {
773 struct blizzard_request *req;
774 int x = win->x;
775 int y = win->y;
776 int width = win->width;
777 int height = win->height;
778 int x_out = win->out_x;
779 int y_out = win->out_y;
780 int width_out = win->out_width;
781 int height_out = win->out_height;
782 int color_mode;
783 int bpp;
784 int flags;
785 unsigned int ystart = y;
786 unsigned int yspan = height;
787 unsigned int ystart_out = y_out;
788 unsigned int yspan_out = height_out;
789
790 flags = win->format & ~OMAPFB_FORMAT_MASK;
791 color_mode = win->format & OMAPFB_FORMAT_MASK;
792 switch (color_mode) {
793 case OMAPFB_COLOR_YUV420:
794 /* Embedded window with different color mode */
795 bpp = 12;
796 /* X, Y, height must be aligned at 2, width at 4 pixels */
797 x &= ~1;
798 y &= ~1;
799 height = yspan = height & ~1;
800 width = width & ~3;
801 break;
802 default:
803 /* Same as the plane color mode */
804 bpp = blizzard.plane[plane_idx].bpp;
805 break;
806 }
807 if (width * height * bpp / 8 > blizzard.max_transmit_size) {
808 yspan = blizzard.max_transmit_size / (width * bpp / 8);
809 yspan_out = yspan * height_out / height;
810 ADD_PREQ(x, ystart, width, yspan, x_out, ystart_out,
811 width_out, yspan_out);
812 ystart += yspan;
813 ystart_out += yspan_out;
814 yspan = height - yspan;
815 yspan_out = height_out - yspan_out;
816 flags &= ~OMAPFB_FORMAT_FLAG_TEARSYNC;
817 }
818
819 ADD_PREQ(x, ystart, width, yspan, x_out, ystart_out,
820 width_out, yspan_out);
821 }
822
823 static void auto_update_complete(void *data)
824 {
825 if (!blizzard.stop_auto_update)
826 mod_timer(&blizzard.auto_update_timer,
827 jiffies + BLIZZARD_AUTO_UPDATE_TIME);
828 }
829
830 static void blizzard_update_window_auto(unsigned long arg)
831 {
832 LIST_HEAD(req_list);
833 struct blizzard_request *last;
834 struct omapfb_plane_struct *plane;
835
836 plane = blizzard.fbdev->fb_info[0]->par;
837 create_req_list(plane->idx,
838 &blizzard.auto_update_window, &req_list);
839 last = list_entry(req_list.prev, struct blizzard_request, entry);
840
841 last->complete = auto_update_complete;
842 last->complete_data = NULL;
843
844 submit_req_list(&req_list);
845 }
846
847 int blizzard_update_window_async(struct fb_info *fbi,
848 struct omapfb_update_window *win,
849 void (*complete_callback)(void *arg),
850 void *complete_callback_data)
851 {
852 LIST_HEAD(req_list);
853 struct blizzard_request *last;
854 struct omapfb_plane_struct *plane = fbi->par;
855
856 if (unlikely(blizzard.update_mode != OMAPFB_MANUAL_UPDATE))
857 return -EINVAL;
858 if (unlikely(!blizzard.te_connected &&
859 (win->format & OMAPFB_FORMAT_FLAG_TEARSYNC)))
860 return -EINVAL;
861
862 create_req_list(plane->idx, win, &req_list);
863 last = list_entry(req_list.prev, struct blizzard_request, entry);
864
865 last->complete = complete_callback;
866 last->complete_data = (void *)complete_callback_data;
867
868 submit_req_list(&req_list);
869
870 return 0;
871 }
872 EXPORT_SYMBOL(blizzard_update_window_async);
873
874 static int update_full_screen(void)
875 {
876 return blizzard_update_window_async(blizzard.fbdev->fb_info[0],
877 &blizzard.auto_update_window, NULL, NULL);
878
879 }
880
881 static int blizzard_setup_plane(int plane, int channel_out,
882 unsigned long offset, int screen_width,
883 int pos_x, int pos_y, int width, int height,
884 int color_mode)
885 {
886 struct plane_info *p;
887
888 #ifdef VERBOSE
889 dev_dbg(blizzard.fbdev->dev,
890 "plane %d ch_out %d offset %#08lx scr_width %d "
891 "pos_x %d pos_y %d width %d height %d color_mode %d\n",
892 plane, channel_out, offset, screen_width,
893 pos_x, pos_y, width, height, color_mode);
894 #endif
895 if ((unsigned)plane > OMAPFB_PLANE_NUM)
896 return -EINVAL;
897 p = &blizzard.plane[plane];
898
899 switch (color_mode) {
900 case OMAPFB_COLOR_YUV422:
901 case OMAPFB_COLOR_YUY422:
902 p->bpp = 16;
903 blizzard.vid_nonstd_color &= ~(1 << plane);
904 break;
905 case OMAPFB_COLOR_YUV420:
906 p->bpp = 12;
907 blizzard.vid_nonstd_color |= 1 << plane;
908 break;
909 case OMAPFB_COLOR_RGB565:
910 p->bpp = 16;
911 blizzard.vid_nonstd_color &= ~(1 << plane);
912 break;
913 default:
914 return -EINVAL;
915 }
916
917 p->offset = offset;
918 p->pos_x = pos_x;
919 p->pos_y = pos_y;
920 p->width = width;
921 p->height = height;
922 p->scr_width = screen_width;
923 if (!p->out_width)
924 p->out_width = width;
925 if (!p->out_height)
926 p->out_height = height;
927
928 p->color_mode = color_mode;
929
930 return 0;
931 }
932
933 static int blizzard_set_scale(int plane, int orig_w, int orig_h,
934 int out_w, int out_h)
935 {
936 struct plane_info *p = &blizzard.plane[plane];
937 int r;
938
939 dev_dbg(blizzard.fbdev->dev,
940 "plane %d orig_w %d orig_h %d out_w %d out_h %d\n",
941 plane, orig_w, orig_h, out_w, out_h);
942 if ((unsigned)plane > OMAPFB_PLANE_NUM)
943 return -ENODEV;
944
945 r = blizzard.int_ctrl->set_scale(plane, orig_w, orig_h, out_w, out_h);
946 if (r < 0)
947 return r;
948
949 p->width = orig_w;
950 p->height = orig_h;
951 p->out_width = out_w;
952 p->out_height = out_h;
953 if (orig_w == out_w && orig_h == out_h)
954 blizzard.vid_scaled &= ~(1 << plane);
955 else
956 blizzard.vid_scaled |= 1 << plane;
957
958 return 0;
959 }
960
961 static int blizzard_set_rotate(int angle)
962 {
963 u32 l;
964
965 l = blizzard_read_reg(BLIZZARD_PANEL_CONFIGURATION);
966 l &= ~0x03;
967
968 switch (angle) {
969 case 0:
970 l = l | 0x00;
971 break;
972 case 90:
973 l = l | 0x03;
974 break;
975 case 180:
976 l = l | 0x02;
977 break;
978 case 270:
979 l = l | 0x01;
980 break;
981 default:
982 return -EINVAL;
983 }
984
985 blizzard_write_reg(BLIZZARD_PANEL_CONFIGURATION, l);
986
987 return 0;
988 }
989
990 static int blizzard_enable_plane(int plane, int enable)
991 {
992 if (enable)
993 blizzard.enabled_planes |= 1 << plane;
994 else
995 blizzard.enabled_planes &= ~(1 << plane);
996
997 return 0;
998 }
999
1000 static int sync_handler(struct blizzard_request *req)
1001 {
1002 complete(req->par.sync);
1003 return REQ_COMPLETE;
1004 }
1005
1006 static void blizzard_sync(void)
1007 {
1008 LIST_HEAD(req_list);
1009 struct blizzard_request *req;
1010 struct completion comp;
1011
1012 req = alloc_req();
1013
1014 req->handler = sync_handler;
1015 req->complete = NULL;
1016 init_completion(&comp);
1017 req->par.sync = &comp;
1018
1019 list_add(&req->entry, &req_list);
1020 submit_req_list(&req_list);
1021
1022 wait_for_completion(&comp);
1023 }
1024
1025
1026 static void blizzard_bind_client(struct omapfb_notifier_block *nb)
1027 {
1028 if (blizzard.update_mode == OMAPFB_MANUAL_UPDATE) {
1029 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
1030 }
1031 }
1032
1033 static int blizzard_set_update_mode(enum omapfb_update_mode mode)
1034 {
1035 if (unlikely(mode != OMAPFB_MANUAL_UPDATE &&
1036 mode != OMAPFB_AUTO_UPDATE &&
1037 mode != OMAPFB_UPDATE_DISABLED))
1038 return -EINVAL;
1039
1040 if (mode == blizzard.update_mode)
1041 return 0;
1042
1043 dev_info(blizzard.fbdev->dev, "s1d1374x: setting update mode to %s\n",
1044 mode == OMAPFB_UPDATE_DISABLED ? "disabled" :
1045 (mode == OMAPFB_AUTO_UPDATE ? "auto" : "manual"));
1046
1047 switch (blizzard.update_mode) {
1048 case OMAPFB_MANUAL_UPDATE:
1049 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_DISABLED);
1050 break;
1051 case OMAPFB_AUTO_UPDATE:
1052 blizzard.stop_auto_update = 1;
1053 del_timer_sync(&blizzard.auto_update_timer);
1054 break;
1055 case OMAPFB_UPDATE_DISABLED:
1056 break;
1057 }
1058
1059 blizzard.update_mode = mode;
1060 blizzard_sync();
1061 blizzard.stop_auto_update = 0;
1062
1063 switch (mode) {
1064 case OMAPFB_MANUAL_UPDATE:
1065 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
1066 break;
1067 case OMAPFB_AUTO_UPDATE:
1068 blizzard_update_window_auto(0);
1069 break;
1070 case OMAPFB_UPDATE_DISABLED:
1071 break;
1072 }
1073
1074 return 0;
1075 }
1076
1077 static enum omapfb_update_mode blizzard_get_update_mode(void)
1078 {
1079 return blizzard.update_mode;
1080 }
1081
1082 static inline void set_extif_timings(const struct extif_timings *t)
1083 {
1084 blizzard.extif->set_timings(t);
1085 }
1086
1087 static inline unsigned long round_to_extif_ticks(unsigned long ps, int div)
1088 {
1089 int bus_tick = blizzard.extif_clk_period * div;
1090 return (ps + bus_tick - 1) / bus_tick * bus_tick;
1091 }
1092
1093 static int calc_reg_timing(unsigned long sysclk, int div)
1094 {
1095 struct extif_timings *t;
1096 unsigned long systim;
1097
1098 /* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
1099 * AccessTime 2 ns + 12.2 ns (regs),
1100 * WEOffTime = WEOnTime + 1 ns,
1101 * REOffTime = REOnTime + 12 ns (regs),
1102 * CSOffTime = REOffTime + 1 ns
1103 * ReadCycle = 2ns + 2*SYSCLK (regs),
1104 * WriteCycle = 2*SYSCLK + 2 ns,
1105 * CSPulseWidth = 10 ns */
1106
1107 systim = 1000000000 / (sysclk / 1000);
1108 dev_dbg(blizzard.fbdev->dev,
1109 "Blizzard systim %lu ps extif_clk_period %u div %d\n",
1110 systim, blizzard.extif_clk_period, div);
1111
1112 t = &blizzard.reg_timings;
1113 memset(t, 0, sizeof(*t));
1114
1115 t->clk_div = div;
1116
1117 t->cs_on_time = 0;
1118 t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1119 t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1120 t->access_time = round_to_extif_ticks(t->re_on_time + 12200, div);
1121 t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
1122 t->re_off_time = round_to_extif_ticks(t->re_on_time + 13000, div);
1123 t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
1124 t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
1125 if (t->we_cycle_time < t->we_off_time)
1126 t->we_cycle_time = t->we_off_time;
1127 t->re_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
1128 if (t->re_cycle_time < t->re_off_time)
1129 t->re_cycle_time = t->re_off_time;
1130 t->cs_pulse_width = 0;
1131
1132 dev_dbg(blizzard.fbdev->dev, "[reg]cson %d csoff %d reon %d reoff %d\n",
1133 t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
1134 dev_dbg(blizzard.fbdev->dev, "[reg]weon %d weoff %d recyc %d wecyc %d\n",
1135 t->we_on_time, t->we_off_time, t->re_cycle_time,
1136 t->we_cycle_time);
1137 dev_dbg(blizzard.fbdev->dev, "[reg]rdaccess %d cspulse %d\n",
1138 t->access_time, t->cs_pulse_width);
1139
1140 return blizzard.extif->convert_timings(t);
1141 }
1142
1143 static int calc_lut_timing(unsigned long sysclk, int div)
1144 {
1145 struct extif_timings *t;
1146 unsigned long systim;
1147
1148 /* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
1149 * AccessTime 2 ns + 4 * SYSCLK + 26 (lut),
1150 * WEOffTime = WEOnTime + 1 ns,
1151 * REOffTime = REOnTime + 4*SYSCLK + 26 ns (lut),
1152 * CSOffTime = REOffTime + 1 ns
1153 * ReadCycle = 2ns + 4*SYSCLK + 26 ns (lut),
1154 * WriteCycle = 2*SYSCLK + 2 ns,
1155 * CSPulseWidth = 10 ns */
1156
1157 systim = 1000000000 / (sysclk / 1000);
1158 dev_dbg(blizzard.fbdev->dev,
1159 "Blizzard systim %lu ps extif_clk_period %u div %d\n",
1160 systim, blizzard.extif_clk_period, div);
1161
1162 t = &blizzard.lut_timings;
1163 memset(t, 0, sizeof(*t));
1164
1165 t->clk_div = div;
1166
1167 t->cs_on_time = 0;
1168 t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1169 t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1170 t->access_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
1171 26000, div);
1172 t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
1173 t->re_off_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
1174 26000, div);
1175 t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
1176 t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
1177 if (t->we_cycle_time < t->we_off_time)
1178 t->we_cycle_time = t->we_off_time;
1179 t->re_cycle_time = round_to_extif_ticks(2000 + 4 * systim + 26000, div);
1180 if (t->re_cycle_time < t->re_off_time)
1181 t->re_cycle_time = t->re_off_time;
1182 t->cs_pulse_width = 0;
1183
1184 dev_dbg(blizzard.fbdev->dev,
1185 "[lut]cson %d csoff %d reon %d reoff %d\n",
1186 t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
1187 dev_dbg(blizzard.fbdev->dev,
1188 "[lut]weon %d weoff %d recyc %d wecyc %d\n",
1189 t->we_on_time, t->we_off_time, t->re_cycle_time,
1190 t->we_cycle_time);
1191 dev_dbg(blizzard.fbdev->dev, "[lut]rdaccess %d cspulse %d\n",
1192 t->access_time, t->cs_pulse_width);
1193
1194 return blizzard.extif->convert_timings(t);
1195 }
1196
1197 static int calc_extif_timings(unsigned long sysclk, int *extif_mem_div)
1198 {
1199 int max_clk_div;
1200 int div;
1201
1202 blizzard.extif->get_clk_info(&blizzard.extif_clk_period, &max_clk_div);
1203 for (div = 1; div <= max_clk_div; div++) {
1204 if (calc_reg_timing(sysclk, div) == 0)
1205 break;
1206 }
1207 if (div > max_clk_div) {
1208 dev_dbg(blizzard.fbdev->dev, "reg timing failed\n");
1209 goto err;
1210 }
1211 *extif_mem_div = div;
1212
1213 for (div = 1; div <= max_clk_div; div++) {
1214 if (calc_lut_timing(sysclk, div) == 0)
1215 break;
1216 }
1217
1218 if (div > max_clk_div)
1219 goto err;
1220
1221 blizzard.extif_clk_div = div;
1222
1223 return 0;
1224 err:
1225 dev_err(blizzard.fbdev->dev, "can't setup timings\n");
1226 return -1;
1227 }
1228
1229 static void calc_blizzard_clk_rates(unsigned long ext_clk,
1230 unsigned long *sys_clk, unsigned long *pix_clk)
1231 {
1232 int pix_clk_src;
1233 int sys_div = 0, sys_mul = 0;
1234 int pix_div;
1235
1236 pix_clk_src = blizzard_read_reg(BLIZZARD_CLK_SRC);
1237 pix_div = ((pix_clk_src >> 3) & 0x1f) + 1;
1238 if ((pix_clk_src & (0x3 << 1)) == 0) {
1239 /* Source is the PLL */
1240 sys_div = (blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x3f) + 1;
1241 sys_mul = blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_0);
1242 sys_mul |= ((blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_1)
1243 & 0x0f) << 11);
1244 *sys_clk = ext_clk * sys_mul / sys_div;
1245 } else /* else source is ext clk, or oscillator */
1246 *sys_clk = ext_clk;
1247
1248 *pix_clk = *sys_clk / pix_div; /* HZ */
1249 dev_dbg(blizzard.fbdev->dev,
1250 "ext_clk %ld pix_src %d pix_div %d sys_div %d sys_mul %d\n",
1251 ext_clk, pix_clk_src & (0x3 << 1), pix_div, sys_div, sys_mul);
1252 dev_dbg(blizzard.fbdev->dev, "sys_clk %ld pix_clk %ld\n",
1253 *sys_clk, *pix_clk);
1254 }
1255
1256 static int setup_tearsync(unsigned long pix_clk, int extif_div)
1257 {
1258 int hdisp, vdisp;
1259 int hndp, vndp;
1260 int hsw, vsw;
1261 int hs, vs;
1262 int hs_pol_inv, vs_pol_inv;
1263 int use_hsvs, use_ndp;
1264 u8 b;
1265
1266 hsw = blizzard_read_reg(BLIZZARD_HSW);
1267 vsw = blizzard_read_reg(BLIZZARD_VSW);
1268 hs_pol_inv = !(hsw & 0x80);
1269 vs_pol_inv = !(vsw & 0x80);
1270 hsw = hsw & 0x7f;
1271 vsw = vsw & 0x3f;
1272
1273 hdisp = blizzard_read_reg(BLIZZARD_HDISP) * 8;
1274 vdisp = blizzard_read_reg(BLIZZARD_VDISP0) +
1275 ((blizzard_read_reg(BLIZZARD_VDISP1) & 0x3) << 8);
1276
1277 hndp = blizzard_read_reg(BLIZZARD_HNDP) & 0x3f;
1278 vndp = blizzard_read_reg(BLIZZARD_VNDP);
1279
1280 /* time to transfer one pixel (16bpp) in ps */
1281 blizzard.pix_tx_time = blizzard.reg_timings.we_cycle_time;
1282 if (blizzard.extif->get_max_tx_rate != NULL) {
1283 /* The external interface might have a rate limitation,
1284 * if so, we have to maximize our transfer rate.
1285 */
1286 unsigned long min_tx_time;
1287 unsigned long max_tx_rate = blizzard.extif->get_max_tx_rate();
1288
1289 dev_dbg(blizzard.fbdev->dev, "max_tx_rate %ld HZ\n",
1290 max_tx_rate);
1291 min_tx_time = 1000000000 / (max_tx_rate / 1000); /* ps */
1292 if (blizzard.pix_tx_time < min_tx_time)
1293 blizzard.pix_tx_time = min_tx_time;
1294 }
1295
1296 /* time to update one line in ps */
1297 blizzard.line_upd_time = (hdisp + hndp) * 1000000 / (pix_clk / 1000);
1298 blizzard.line_upd_time *= 1000;
1299 if (hdisp * blizzard.pix_tx_time > blizzard.line_upd_time)
1300 /* transfer speed too low, we might have to use both
1301 * HS and VS */
1302 use_hsvs = 1;
1303 else
1304 /* decent transfer speed, we'll always use only VS */
1305 use_hsvs = 0;
1306
1307 if (use_hsvs && (hs_pol_inv || vs_pol_inv)) {
1308 /* HS or'ed with VS doesn't work, use the active high
1309 * TE signal based on HNDP / VNDP */
1310 use_ndp = 1;
1311 hs_pol_inv = 0;
1312 vs_pol_inv = 0;
1313 hs = hndp;
1314 vs = vndp;
1315 } else {
1316 /* Use HS or'ed with VS as a TE signal if both are needed
1317 * or VNDP if only vsync is needed. */
1318 use_ndp = 0;
1319 hs = hsw;
1320 vs = vsw;
1321 if (!use_hsvs) {
1322 hs_pol_inv = 0;
1323 vs_pol_inv = 0;
1324 }
1325 }
1326
1327 hs = hs * 1000000 / (pix_clk / 1000); /* ps */
1328 hs *= 1000;
1329
1330 vs = vs * (hdisp + hndp) * 1000000 / (pix_clk / 1000); /* ps */
1331 vs *= 1000;
1332
1333 if (vs <= hs)
1334 return -EDOM;
1335 /* set VS to 120% of HS to minimize VS detection time */
1336 vs = hs * 12 / 10;
1337 /* minimize HS too */
1338 if (hs > 10000)
1339 hs = 10000;
1340
1341 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
1342 b &= ~0x3;
1343 b |= use_hsvs ? 1 : 0;
1344 b |= (use_ndp && use_hsvs) ? 0 : 2;
1345 blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
1346
1347 blizzard.vsync_only = !use_hsvs;
1348
1349 dev_dbg(blizzard.fbdev->dev,
1350 "pix_clk %ld HZ pix_tx_time %ld ps line_upd_time %ld ps\n",
1351 pix_clk, blizzard.pix_tx_time, blizzard.line_upd_time);
1352 dev_dbg(blizzard.fbdev->dev,
1353 "hs %d ps vs %d ps mode %d vsync_only %d\n",
1354 hs, vs, b & 0x3, !use_hsvs);
1355
1356 return blizzard.extif->setup_tearsync(1, hs, vs,
1357 hs_pol_inv, vs_pol_inv,
1358 extif_div);
1359 }
1360
1361 static void blizzard_get_caps(int plane, struct omapfb_caps *caps)
1362 {
1363 blizzard.int_ctrl->get_caps(plane, caps);
1364 caps->ctrl |= OMAPFB_CAPS_MANUAL_UPDATE |
1365 OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE |
1366 OMAPFB_CAPS_WINDOW_SCALE |
1367 OMAPFB_CAPS_WINDOW_OVERLAY |
1368 OMAPFB_CAPS_WINDOW_ROTATE;
1369 if (blizzard.te_connected)
1370 caps->ctrl |= OMAPFB_CAPS_TEARSYNC;
1371 caps->wnd_color |= (1 << OMAPFB_COLOR_RGB565) |
1372 (1 << OMAPFB_COLOR_YUV420);
1373 }
1374
1375 static void _save_regs(const struct blizzard_reg_list *list, int cnt)
1376 {
1377 int i;
1378
1379 for (i = 0; i < cnt; i++, list++) {
1380 int reg;
1381 for (reg = list->start; reg <= list->end; reg += 2)
1382 blizzard_reg_cache[reg / 2] = blizzard_read_reg(reg);
1383 }
1384 }
1385
1386 static void _restore_regs(const struct blizzard_reg_list *list, int cnt)
1387 {
1388 int i;
1389
1390 for (i = 0; i < cnt; i++, list++) {
1391 int reg;
1392 for (reg = list->start; reg <= list->end; reg += 2)
1393 blizzard_write_reg(reg, blizzard_reg_cache[reg / 2]);
1394 }
1395 }
1396
1397 static void blizzard_save_all_regs(void)
1398 {
1399 _save_regs(blizzard_pll_regs, ARRAY_SIZE(blizzard_pll_regs));
1400 _save_regs(blizzard_gen_regs, ARRAY_SIZE(blizzard_gen_regs));
1401 }
1402
1403 static void blizzard_restore_pll_regs(void)
1404 {
1405 _restore_regs(blizzard_pll_regs, ARRAY_SIZE(blizzard_pll_regs));
1406 }
1407
1408 static void blizzard_restore_gen_regs(void)
1409 {
1410 _restore_regs(blizzard_gen_regs, ARRAY_SIZE(blizzard_gen_regs));
1411 }
1412
1413 static void blizzard_suspend(void)
1414 {
1415 u32 l;
1416 unsigned long tmo;
1417
1418 if (blizzard.last_color_mode) {
1419 update_full_screen();
1420 blizzard_sync();
1421 }
1422 blizzard.update_mode_before_suspend = blizzard.update_mode;
1423 /* the following will disable clocks as well */
1424 blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
1425
1426 blizzard_save_all_regs();
1427
1428 blizzard_stop_sdram();
1429
1430 l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
1431 /* Standby, Sleep. We assume we use an external clock. */
1432 l |= 0x03;
1433 blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
1434
1435 tmo = jiffies + msecs_to_jiffies(100);
1436 while (!(blizzard_read_reg(BLIZZARD_PLL_MODE) & (1 << 1))) {
1437 if (time_after(jiffies, tmo)) {
1438 dev_err(blizzard.fbdev->dev,
1439 "s1d1374x: sleep timeout, stopping PLL manually\n");
1440 l = blizzard_read_reg(BLIZZARD_PLL_MODE);
1441 l &= ~0x03;
1442 /* Disable PLL, counter function */
1443 l |= 0x2;
1444 blizzard_write_reg(BLIZZARD_PLL_MODE, l);
1445 break;
1446 }
1447 msleep(1);
1448 }
1449
1450 if (blizzard.power_down != NULL)
1451 blizzard.power_down(blizzard.fbdev->dev);
1452 }
1453
1454 static void blizzard_resume(void)
1455 {
1456 u32 l;
1457
1458 if (blizzard.power_up != NULL)
1459 blizzard.power_up(blizzard.fbdev->dev);
1460
1461 l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
1462 /* Standby, Sleep */
1463 l &= ~0x03;
1464 blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
1465
1466 blizzard_restore_pll_regs();
1467 l = blizzard_read_reg(BLIZZARD_PLL_MODE);
1468 l &= ~0x03;
1469 /* Enable PLL, counter function */
1470 l |= 0x1;
1471 blizzard_write_reg(BLIZZARD_PLL_MODE, l);
1472
1473 while (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & (1 << 7)))
1474 msleep(1);
1475
1476 blizzard_restart_sdram();
1477
1478 blizzard_restore_gen_regs();
1479
1480 /* Enable display */
1481 blizzard_write_reg(BLIZZARD_DISPLAY_MODE, 0x01);
1482
1483 /* the following will enable clocks as necessary */
1484 blizzard_set_update_mode(blizzard.update_mode_before_suspend);
1485
1486 /* Force a background update */
1487 blizzard.zoom_on = 1;
1488 update_full_screen();
1489 blizzard_sync();
1490 }
1491
1492 static int blizzard_init(struct omapfb_device *fbdev, int ext_mode,
1493 struct omapfb_mem_desc *req_vram)
1494 {
1495 int r = 0, i;
1496 u8 rev, conf;
1497 unsigned long ext_clk;
1498 int extif_div;
1499 unsigned long sys_clk, pix_clk;
1500 struct omapfb_platform_data *omapfb_conf;
1501 struct blizzard_platform_data *ctrl_conf;
1502
1503 blizzard.fbdev = fbdev;
1504
1505 BUG_ON(!fbdev->ext_if || !fbdev->int_ctrl);
1506
1507 blizzard.fbdev = fbdev;
1508 blizzard.extif = fbdev->ext_if;
1509 blizzard.int_ctrl = fbdev->int_ctrl;
1510
1511 omapfb_conf = fbdev->dev->platform_data;
1512 ctrl_conf = omapfb_conf->ctrl_platform_data;
1513 if (ctrl_conf == NULL || ctrl_conf->get_clock_rate == NULL) {
1514 dev_err(fbdev->dev, "s1d1374x: missing platform data\n");
1515 r = -ENOENT;
1516 goto err1;
1517 }
1518
1519 blizzard.power_down = ctrl_conf->power_down;
1520 blizzard.power_up = ctrl_conf->power_up;
1521
1522 spin_lock_init(&blizzard.req_lock);
1523
1524 if ((r = blizzard.int_ctrl->init(fbdev, 1, req_vram)) < 0)
1525 goto err1;
1526
1527 if ((r = blizzard.extif->init(fbdev)) < 0)
1528 goto err2;
1529
1530 blizzard_ctrl.set_color_key = blizzard.int_ctrl->set_color_key;
1531 blizzard_ctrl.get_color_key = blizzard.int_ctrl->get_color_key;
1532 blizzard_ctrl.setup_mem = blizzard.int_ctrl->setup_mem;
1533 blizzard_ctrl.mmap = blizzard.int_ctrl->mmap;
1534
1535 ext_clk = ctrl_conf->get_clock_rate(fbdev->dev);
1536 if ((r = calc_extif_timings(ext_clk, &extif_div)) < 0)
1537 goto err3;
1538
1539 set_extif_timings(&blizzard.reg_timings);
1540
1541 if (blizzard.power_up != NULL)
1542 blizzard.power_up(fbdev->dev);
1543
1544 calc_blizzard_clk_rates(ext_clk, &sys_clk, &pix_clk);
1545
1546 if ((r = calc_extif_timings(sys_clk, &extif_div)) < 0)
1547 goto err3;
1548 set_extif_timings(&blizzard.reg_timings);
1549
1550 if (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x80)) {
1551 dev_err(fbdev->dev,
1552 "controller not initialized by the bootloader\n");
1553 r = -ENODEV;
1554 goto err3;
1555 }
1556
1557 if (ctrl_conf->te_connected) {
1558 if ((r = setup_tearsync(pix_clk, extif_div)) < 0)
1559 goto err3;
1560 blizzard.te_connected = 1;
1561 }
1562
1563 rev = blizzard_read_reg(BLIZZARD_REV_CODE);
1564 conf = blizzard_read_reg(BLIZZARD_CONFIG);
1565
1566 switch (rev & 0xfc) {
1567 case 0x9c:
1568 blizzard.version = BLIZZARD_VERSION_S1D13744;
1569 pr_info("omapfb: s1d13744 LCD controller rev %d "
1570 "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
1571 break;
1572 case 0xa4:
1573 blizzard.version = BLIZZARD_VERSION_S1D13745;
1574 pr_info("omapfb: s1d13745 LCD controller rev %d "
1575 "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
1576 break;
1577 default:
1578 dev_err(fbdev->dev, "invalid s1d1374x revision %02x\n",
1579 rev);
1580 r = -ENODEV;
1581 goto err3;
1582 }
1583
1584 blizzard.max_transmit_size = blizzard.extif->max_transmit_size;
1585
1586 blizzard.update_mode = OMAPFB_UPDATE_DISABLED;
1587
1588 blizzard.auto_update_window.x = 0;
1589 blizzard.auto_update_window.y = 0;
1590 blizzard.auto_update_window.width = fbdev->panel->x_res;
1591 blizzard.auto_update_window.height = fbdev->panel->y_res;
1592 blizzard.auto_update_window.out_x = 0;
1593 blizzard.auto_update_window.out_x = 0;
1594 blizzard.auto_update_window.out_width = fbdev->panel->x_res;
1595 blizzard.auto_update_window.out_height = fbdev->panel->y_res;
1596 blizzard.auto_update_window.format = 0;
1597
1598 blizzard.screen_width = fbdev->panel->x_res;
1599 blizzard.screen_height = fbdev->panel->y_res;
1600
1601 init_timer(&blizzard.auto_update_timer);
1602 blizzard.auto_update_timer.function = blizzard_update_window_auto;
1603 blizzard.auto_update_timer.data = 0;
1604
1605 INIT_LIST_HEAD(&blizzard.free_req_list);
1606 INIT_LIST_HEAD(&blizzard.pending_req_list);
1607 for (i = 0; i < ARRAY_SIZE(blizzard.req_pool); i++)
1608 list_add(&blizzard.req_pool[i].entry, &blizzard.free_req_list);
1609 BUG_ON(i <= IRQ_REQ_POOL_SIZE);
1610 sema_init(&blizzard.req_sema, i - IRQ_REQ_POOL_SIZE);
1611
1612 return 0;
1613 err3:
1614 if (blizzard.power_down != NULL)
1615 blizzard.power_down(fbdev->dev);
1616 blizzard.extif->cleanup();
1617 err2:
1618 blizzard.int_ctrl->cleanup();
1619 err1:
1620 return r;
1621 }
1622
1623 static void blizzard_cleanup(void)
1624 {
1625 blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
1626 blizzard.extif->cleanup();
1627 blizzard.int_ctrl->cleanup();
1628 if (blizzard.power_down != NULL)
1629 blizzard.power_down(blizzard.fbdev->dev);
1630 }
1631
1632 struct lcd_ctrl blizzard_ctrl = {
1633 .name = "blizzard",
1634 .init = blizzard_init,
1635 .cleanup = blizzard_cleanup,
1636 .bind_client = blizzard_bind_client,
1637 .get_caps = blizzard_get_caps,
1638 .set_update_mode = blizzard_set_update_mode,
1639 .get_update_mode = blizzard_get_update_mode,
1640 .setup_plane = blizzard_setup_plane,
1641 .set_scale = blizzard_set_scale,
1642 .enable_plane = blizzard_enable_plane,
1643 .set_rotate = blizzard_set_rotate,
1644 .update_window = blizzard_update_window_async,
1645 .sync = blizzard_sync,
1646 .suspend = blizzard_suspend,
1647 .resume = blizzard_resume,
1648 };
1649