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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / video / omap / blizzard.c
blob4d8ad9cd0e19701c0b8c15135ac08610680f107d
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 <asm/arch/dma.h>
30 #include <asm/arch/omapfb.h>
31 #include <asm/arch/blizzard.h>
32
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_HDISP 0x2a
48 #define BLIZZARD_HNDP 0x2c
49 #define BLIZZARD_VDISP0 0x2e
50 #define BLIZZARD_VDISP1 0x30
51 #define BLIZZARD_VNDP 0x32
52 #define BLIZZARD_HSW 0x34
53 #define BLIZZARD_VSW 0x38
54 #define BLIZZARD_DISPLAY_MODE 0x68
55 #define BLIZZARD_INPUT_WIN_X_START_0 0x6c
56 #define BLIZZARD_DATA_SOURCE_SELECT 0x8e
57 #define BLIZZARD_DISP_MEM_DATA_PORT 0x90
58 #define BLIZZARD_DISP_MEM_READ_ADDR0 0x92
59 #define BLIZZARD_POWER_SAVE 0xE6
60 #define BLIZZARD_NDISP_CTRL_STATUS 0xE8
61
62 /* Data source select */
63 /* For S1D13745 */
64 #define BLIZZARD_SRC_WRITE_LCD_BACKGROUND 0x00
65 #define BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE 0x01
66 #define BLIZZARD_SRC_WRITE_OVERLAY_ENABLE 0x04
67 #define BLIZZARD_SRC_DISABLE_OVERLAY 0x05
68 /* For S1D13744 */
69 #define BLIZZARD_SRC_WRITE_LCD 0x00
70 #define BLIZZARD_SRC_BLT_LCD 0x06
71
72 #define BLIZZARD_COLOR_RGB565 0x01
73 #define BLIZZARD_COLOR_YUV420 0x09
74
75 #define BLIZZARD_VERSION_S1D13745 0x01 /* Hailstorm */
76 #define BLIZZARD_VERSION_S1D13744 0x02 /* Blizzard */
77
78 #define BLIZZARD_AUTO_UPDATE_TIME (HZ / 20)
79
80 /* Reserve 4 request slots for requests in irq context */
81 #define REQ_POOL_SIZE 24
82 #define IRQ_REQ_POOL_SIZE 4
83
84 #define REQ_FROM_IRQ_POOL 0x01
85
86 #define REQ_COMPLETE 0
87 #define REQ_PENDING 1
88
89 struct blizzard_reg_list {
90 int start;
91 int end;
92 };
93
94 /* These need to be saved / restored separately from the rest. */
95 static struct blizzard_reg_list blizzard_pll_regs[] = {
96 {
97 .start = 0x04, /* Don't save PLL ctrl (0x0C) */
98 .end = 0x0a,
99 },
100 {
101 .start = 0x0e, /* Clock configuration */
102 .end = 0x0e,
103 },
104 };
105
106 static struct blizzard_reg_list blizzard_gen_regs[] = {
107 {
108 .start = 0x18, /* SDRAM control */
109 .end = 0x20,
110 },
111 {
112 .start = 0x28, /* LCD Panel configuration */
113 .end = 0x5a, /* HSSI interface, TV configuration */
114 },
115 };
116
117 static u8 blizzard_reg_cache[0x5a / 2];
118
119 struct update_param {
120 int plane;
121 int x, y, width, height;
122 int out_x, out_y;
123 int out_width, out_height;
124 int color_mode;
125 int bpp;
126 int flags;
127 };
128
129 struct blizzard_request {
130 struct list_head entry;
131 unsigned int flags;
132
133 int (*handler)(struct blizzard_request *req);
134 void (*complete)(void *data);
135 void *complete_data;
136
137 union {
138 struct update_param update;
139 struct completion *sync;
140 } par;
141 };
142
143 struct plane_info {
144 unsigned long offset;
145 int pos_x, pos_y;
146 int width, height;
147 int out_width, out_height;
148 int scr_width;
149 int color_mode;
150 int bpp;
151 };
152
153 struct blizzard_struct {
154 enum omapfb_update_mode update_mode;
155 enum omapfb_update_mode update_mode_before_suspend;
156
157 struct timer_list auto_update_timer;
158 int stop_auto_update;
159 struct omapfb_update_window auto_update_window;
160 int enabled_planes;
161 int vid_nonstd_color;
162 int vid_scaled;
163 int last_color_mode;
164 int zoom_on;
165 int screen_width;
166 int screen_height;
167 unsigned te_connected:1;
168 unsigned vsync_only:1;
169
170 struct plane_info plane[OMAPFB_PLANE_NUM];
171
172 struct blizzard_request req_pool[REQ_POOL_SIZE];
173 struct list_head pending_req_list;
174 struct list_head free_req_list;
175 struct semaphore req_sema;
176 spinlock_t req_lock;
177
178 unsigned long sys_ck_rate;
179 struct extif_timings reg_timings, lut_timings;
180
181 u32 max_transmit_size;
182 u32 extif_clk_period;
183 int extif_clk_div;
184 unsigned long pix_tx_time;
185 unsigned long line_upd_time;
186
187 struct omapfb_device *fbdev;
188 struct lcd_ctrl_extif *extif;
189 struct lcd_ctrl *int_ctrl;
190
191 void (*power_up)(struct device *dev);
192 void (*power_down)(struct device *dev);
193
194 int version;
195 } blizzard;
196
197 struct lcd_ctrl blizzard_ctrl;
198
199 static u8 blizzard_read_reg(u8 reg)
200 {
201 u8 data;
202
203 blizzard.extif->set_bits_per_cycle(8);
204 blizzard.extif->write_command(&reg, 1);
205 blizzard.extif->read_data(&data, 1);
206
207 return data;
208 }
209
210 static void blizzard_write_reg(u8 reg, u8 val)
211 {
212 blizzard.extif->set_bits_per_cycle(8);
213 blizzard.extif->write_command(&reg, 1);
214 blizzard.extif->write_data(&val, 1);
215 }
216
217 static void blizzard_restart_sdram(void)
218 {
219 unsigned long tmo;
220
221 blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
222 udelay(50);
223 blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 1);
224 tmo = jiffies + msecs_to_jiffies(200);
225 while (!(blizzard_read_reg(BLIZZARD_MEM_BANK0_STATUS) & 0x01)) {
226 if (time_after(jiffies, tmo)) {
227 dev_err(blizzard.fbdev->dev,
228 "s1d1374x: SDRAM not ready\n");
229 break;
230 }
231 msleep(1);
232 }
233 }
234
235 static void blizzard_stop_sdram(void)
236 {
237 blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
238 }
239
240 /* Wait until the last window was completely written into the controllers
241 * SDRAM and we can start transferring the next window.
242 */
243 static void blizzard_wait_line_buffer(void)
244 {
245 unsigned long tmo = jiffies + msecs_to_jiffies(30);
246
247 while (blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS) & (1 << 7)) {
248 if (time_after(jiffies, tmo)) {
249 if (printk_ratelimit())
250 dev_err(blizzard.fbdev->dev,
251 "s1d1374x: line buffer not ready\n");
252 break;
253 }
254 }
255 }
256
257 /* Wait until the YYC color space converter is idle. */
258 static void blizzard_wait_yyc(void)
259 {
260 unsigned long tmo = jiffies + msecs_to_jiffies(30);
261
262 while (blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS) & (1 << 4)) {
263 if (time_after(jiffies, tmo)) {
264 if (printk_ratelimit())
265 dev_err(blizzard.fbdev->dev,
266 "s1d1374x: YYC not ready\n");
267 break;
268 }
269 }
270 }
271
272 static void disable_overlay(void)
273 {
274 blizzard_write_reg(BLIZZARD_DATA_SOURCE_SELECT,
275 BLIZZARD_SRC_DISABLE_OVERLAY);
276 }
277
278 static void set_window_regs(int x_start, int y_start, int x_end, int y_end,
279 int x_out_start, int y_out_start,
280 int x_out_end, int y_out_end, int color_mode,
281 int zoom_off, int flags)
282 {
283 u8 tmp[18];
284 u8 cmd;
285
286 x_end--;
287 y_end--;
288 tmp[0] = x_start;
289 tmp[1] = x_start >> 8;
290 tmp[2] = y_start;
291 tmp[3] = y_start >> 8;
292 tmp[4] = x_end;
293 tmp[5] = x_end >> 8;
294 tmp[6] = y_end;
295 tmp[7] = y_end >> 8;
296
297 x_out_end--;
298 y_out_end--;
299 tmp[8] = x_out_start;
300 tmp[9] = x_out_start >> 8;
301 tmp[10] = y_out_start;
302 tmp[11] = y_out_start >> 8;
303 tmp[12] = x_out_end;
304 tmp[13] = x_out_end >> 8;
305 tmp[14] = y_out_end;
306 tmp[15] = y_out_end >> 8;
307
308 tmp[16] = color_mode;
309 if (zoom_off && blizzard.version == BLIZZARD_VERSION_S1D13745)
310 tmp[17] = BLIZZARD_SRC_WRITE_LCD_BACKGROUND;
311 else if (flags & OMAPFB_FORMAT_FLAG_ENABLE_OVERLAY)
312 tmp[17] = BLIZZARD_SRC_WRITE_OVERLAY_ENABLE;
313 else
314 tmp[17] = blizzard.version == BLIZZARD_VERSION_S1D13744 ?
315 BLIZZARD_SRC_WRITE_LCD :
316 BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE;
317
318 blizzard.extif->set_bits_per_cycle(8);
319 cmd = BLIZZARD_INPUT_WIN_X_START_0;
320 blizzard.extif->write_command(&cmd, 1);
321 blizzard.extif->write_data(tmp, 18);
322 }
323
324 static void enable_tearsync(int y, int width, int height, int screen_height,
325 int out_height, int force_vsync)
326 {
327 u8 b;
328
329 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
330 b |= 1 << 3;
331 blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
332
333 if (likely(blizzard.vsync_only || force_vsync)) {
334 blizzard.extif->enable_tearsync(1, 0);
335 return;
336 }
337
338 if (width * blizzard.pix_tx_time < blizzard.line_upd_time) {
339 blizzard.extif->enable_tearsync(1, 0);
340 return;
341 }
342
343 if ((width * blizzard.pix_tx_time / 1000) * height <
344 (y + out_height) * (blizzard.line_upd_time / 1000)) {
345 blizzard.extif->enable_tearsync(1, 0);
346 return;
347 }
348
349 blizzard.extif->enable_tearsync(1, y + 1);
350 }
351
352 static void disable_tearsync(void)
353 {
354 u8 b;
355
356 blizzard.extif->enable_tearsync(0, 0);
357 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
358 b &= ~(1 << 3);
359 blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
360 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
361 }
362
363 static inline void set_extif_timings(const struct extif_timings *t);
364
365 static inline struct blizzard_request *alloc_req(void)
366 {
367 unsigned long flags;
368 struct blizzard_request *req;
369 int req_flags = 0;
370
371 if (!in_interrupt())
372 down(&blizzard.req_sema);
373 else
374 req_flags = REQ_FROM_IRQ_POOL;
375
376 spin_lock_irqsave(&blizzard.req_lock, flags);
377 BUG_ON(list_empty(&blizzard.free_req_list));
378 req = list_entry(blizzard.free_req_list.next,
379 struct blizzard_request, entry);
380 list_del(&req->entry);
381 spin_unlock_irqrestore(&blizzard.req_lock, flags);
382
383 INIT_LIST_HEAD(&req->entry);
384 req->flags = req_flags;
385
386 return req;
387 }
388
389 static inline void free_req(struct blizzard_request *req)
390 {
391 unsigned long flags;
392
393 spin_lock_irqsave(&blizzard.req_lock, flags);
394
395 list_del(&req->entry);
396 list_add(&req->entry, &blizzard.free_req_list);
397 if (!(req->flags & REQ_FROM_IRQ_POOL))
398 up(&blizzard.req_sema);
399
400 spin_unlock_irqrestore(&blizzard.req_lock, flags);
401 }
402
403 static void process_pending_requests(void)
404 {
405 unsigned long flags;
406
407 spin_lock_irqsave(&blizzard.req_lock, flags);
408
409 while (!list_empty(&blizzard.pending_req_list)) {
410 struct blizzard_request *req;
411 void (*complete)(void *);
412 void *complete_data;
413
414 req = list_entry(blizzard.pending_req_list.next,
415 struct blizzard_request, entry);
416 spin_unlock_irqrestore(&blizzard.req_lock, flags);
417
418 if (req->handler(req) == REQ_PENDING)
419 return;
420
421 complete = req->complete;
422 complete_data = req->complete_data;
423 free_req(req);
424
425 if (complete)
426 complete(complete_data);
427
428 spin_lock_irqsave(&blizzard.req_lock, flags);
429 }
430
431 spin_unlock_irqrestore(&blizzard.req_lock, flags);
432 }
433
434 static void submit_req_list(struct list_head *head)
435 {
436 unsigned long flags;
437 int process = 1;
438
439 spin_lock_irqsave(&blizzard.req_lock, flags);
440 if (likely(!list_empty(&blizzard.pending_req_list)))
441 process = 0;
442 list_splice_init(head, blizzard.pending_req_list.prev);
443 spin_unlock_irqrestore(&blizzard.req_lock, flags);
444
445 if (process)
446 process_pending_requests();
447 }
448
449 static void request_complete(void *data)
450 {
451 struct blizzard_request *req = (struct blizzard_request *)data;
452 void (*complete)(void *);
453 void *complete_data;
454
455 complete = req->complete;
456 complete_data = req->complete_data;
457
458 free_req(req);
459
460 if (complete)
461 complete(complete_data);
462
463 process_pending_requests();
464 }
465
466
467 static int do_full_screen_update(struct blizzard_request *req)
468 {
469 int i;
470 int flags;
471
472 for (i = 0; i < 3; i++) {
473 struct plane_info *p = &blizzard.plane[i];
474 if (!(blizzard.enabled_planes & (1 << i))) {
475 blizzard.int_ctrl->enable_plane(i, 0);
476 continue;
477 }
478 dev_dbg(blizzard.fbdev->dev, "pw %d ph %d\n",
479 p->width, p->height);
480 blizzard.int_ctrl->setup_plane(i,
481 OMAPFB_CHANNEL_OUT_LCD, p->offset,
482 p->scr_width, p->pos_x, p->pos_y,
483 p->width, p->height,
484 p->color_mode);
485 blizzard.int_ctrl->enable_plane(i, 1);
486 }
487
488 dev_dbg(blizzard.fbdev->dev, "sw %d sh %d\n",
489 blizzard.screen_width, blizzard.screen_height);
490 blizzard_wait_line_buffer();
491 flags = req->par.update.flags;
492 if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
493 enable_tearsync(0, blizzard.screen_width,
494 blizzard.screen_height,
495 blizzard.screen_height,
496 blizzard.screen_height,
497 flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
498 else
499 disable_tearsync();
500
501 set_window_regs(0, 0, blizzard.screen_width, blizzard.screen_height,
502 0, 0, blizzard.screen_width, blizzard.screen_height,
503 BLIZZARD_COLOR_RGB565, blizzard.zoom_on, flags);
504 blizzard.zoom_on = 0;
505
506 blizzard.extif->set_bits_per_cycle(16);
507 /* set_window_regs has left the register index at the right
508 * place, so no need to set it here.
509 */
510 blizzard.extif->transfer_area(blizzard.screen_width,
511 blizzard.screen_height,
512 request_complete, req);
513 return REQ_PENDING;
514 }
515
516 /* Setup all planes with an overlapping area with the update window. */
517 static int do_partial_update(struct blizzard_request *req, int plane,
518 int x, int y, int w, int h,
519 int x_out, int y_out, int w_out, int h_out,
520 int wnd_color_mode, int bpp)
521 {
522 int i;
523 int gx1, gy1, gx2, gy2;
524 int gx1_out, gy1_out, gx2_out, gy2_out;
525 int color_mode;
526 int flags;
527 int zoom_off;
528
529 /* Global coordinates, relative to pixel 0,0 of the LCD */
530 gx1 = x + blizzard.plane[plane].pos_x;
531 gy1 = y + blizzard.plane[plane].pos_y;
532 gx2 = gx1 + w;
533 gy2 = gy1 + h;
534
535 flags = req->par.update.flags;
536 if (flags & OMAPFB_FORMAT_FLAG_DOUBLE) {
537 gx1_out = gx1;
538 gy1_out = gy1;
539 gx2_out = gx1 + w * 2;
540 gy2_out = gy1 + h * 2;
541 } else {
542 gx1_out = x_out + blizzard.plane[plane].pos_x;
543 gy1_out = y_out + blizzard.plane[plane].pos_y;
544 gx2_out = gx1_out + w_out;
545 gy2_out = gy1_out + h_out;
546 }
547 zoom_off = blizzard.zoom_on && gx1 == 0 && gy1 == 0 &&
548 w == blizzard.screen_width && h == blizzard.screen_height;
549 blizzard.zoom_on = (!zoom_off && blizzard.zoom_on) ||
550 (w < w_out || h < h_out);
551
552 for (i = 0; i < OMAPFB_PLANE_NUM; i++) {
553 struct plane_info *p = &blizzard.plane[i];
554 int px1, py1;
555 int px2, py2;
556 int pw, ph;
557 int pposx, pposy;
558 unsigned long offset;
559
560 if (!(blizzard.enabled_planes & (1 << i)) ||
561 (wnd_color_mode && i != plane)) {
562 blizzard.int_ctrl->enable_plane(i, 0);
563 continue;
564 }
565 /* Plane coordinates */
566 if (i == plane) {
567 /* Plane in which we are doing the update.
568 * Local coordinates are the one in the update
569 * request.
570 */
571 px1 = x;
572 py1 = y;
573 px2 = x + w;
574 py2 = y + h;
575 pposx = 0;
576 pposy = 0;
577 } else {
578 /* Check if this plane has an overlapping part */
579 px1 = gx1 - p->pos_x;
580 py1 = gy1 - p->pos_y;
581 px2 = gx2 - p->pos_x;
582 py2 = gy2 - p->pos_y;
583 if (px1 >= p->width || py1 >= p->height ||
584 px2 <= 0 || py2 <= 0) {
585 blizzard.int_ctrl->enable_plane(i, 0);
586 continue;
587 }
588 /* Calculate the coordinates for the overlapping
589 * part in the plane's local coordinates.
590 */
591 pposx = -px1;
592 pposy = -py1;
593 if (px1 < 0)
594 px1 = 0;
595 if (py1 < 0)
596 py1 = 0;
597 if (px2 > p->width)
598 px2 = p->width;
599 if (py2 > p->height)
600 py2 = p->height;
601 if (pposx < 0)
602 pposx = 0;
603 if (pposy < 0)
604 pposy = 0;
605 }
606 pw = px2 - px1;
607 ph = py2 - py1;
608 offset = p->offset + (p->scr_width * py1 + px1) * p->bpp / 8;
609 if (wnd_color_mode)
610 /* Window embedded in the plane with a differing
611 * color mode / bpp. Calculate the number of DMA
612 * transfer elements in terms of the plane's bpp.
613 */
614 pw = (pw + 1) * bpp / p->bpp;
615 #ifdef VERBOSE
616 dev_dbg(blizzard.fbdev->dev,
617 "plane %d offset %#08lx pposx %d pposy %d "
618 "px1 %d py1 %d pw %d ph %d\n",
619 i, offset, pposx, pposy, px1, py1, pw, ph);
620 #endif
621 blizzard.int_ctrl->setup_plane(i,
622 OMAPFB_CHANNEL_OUT_LCD, offset,
623 p->scr_width,
624 pposx, pposy, pw, ph,
625 p->color_mode);
626
627 blizzard.int_ctrl->enable_plane(i, 1);
628 }
629
630 switch (wnd_color_mode) {
631 case OMAPFB_COLOR_YUV420:
632 color_mode = BLIZZARD_COLOR_YUV420;
633 /* Currently only the 16 bits/pixel cycle format is
634 * supported on the external interface. Adjust the number
635 * of transfer elements per line for 12bpp format.
636 */
637 w = (w + 1) * 3 / 4;
638 break;
639 default:
640 color_mode = BLIZZARD_COLOR_RGB565;
641 break;
642 }
643
644 blizzard_wait_line_buffer();
645 if (blizzard.last_color_mode == BLIZZARD_COLOR_YUV420)
646 blizzard_wait_yyc();
647 blizzard.last_color_mode = color_mode;
648 if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
649 enable_tearsync(gy1, w, h,
650 blizzard.screen_height,
651 h_out,
652 flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
653 else
654 disable_tearsync();
655
656 set_window_regs(gx1, gy1, gx2, gy2, gx1_out, gy1_out, gx2_out, gy2_out,
657 color_mode, zoom_off, flags);
658
659 blizzard.extif->set_bits_per_cycle(16);
660 /* set_window_regs has left the register index at the right
661 * place, so no need to set it here.
662 */
663 blizzard.extif->transfer_area(w, h, request_complete, req);
664
665 return REQ_PENDING;
666 }
667
668 static int send_frame_handler(struct blizzard_request *req)
669 {
670 struct update_param *par = &req->par.update;
671 int plane = par->plane;
672
673 #ifdef VERBOSE
674 dev_dbg(blizzard.fbdev->dev,
675 "send_frame: x %d y %d w %d h %d "
676 "x_out %d y_out %d w_out %d h_out %d "
677 "color_mode %04x flags %04x planes %01x\n",
678 par->x, par->y, par->width, par->height,
679 par->out_x, par->out_y, par->out_width, par->out_height,
680 par->color_mode, par->flags, blizzard.enabled_planes);
681 #endif
682 if (par->flags & OMAPFB_FORMAT_FLAG_DISABLE_OVERLAY)
683 disable_overlay();
684
685 if ((blizzard.enabled_planes & blizzard.vid_nonstd_color) ||
686 (blizzard.enabled_planes & blizzard.vid_scaled))
687 return do_full_screen_update(req);
688
689 return do_partial_update(req, plane, par->x, par->y,
690 par->width, par->height,
691 par->out_x, par->out_y,
692 par->out_width, par->out_height,
693 par->color_mode, par->bpp);
694 }
695
696 static void send_frame_complete(void *data)
697 {
698 }
699
700 #define ADD_PREQ(_x, _y, _w, _h, _x_out, _y_out, _w_out, _h_out) do { \
701 req = alloc_req(); \
702 req->handler = send_frame_handler; \
703 req->complete = send_frame_complete; \
704 req->par.update.plane = plane_idx; \
705 req->par.update.x = _x; \
706 req->par.update.y = _y; \
707 req->par.update.width = _w; \
708 req->par.update.height = _h; \
709 req->par.update.out_x = _x_out; \
710 req->par.update.out_y = _y_out; \
711 req->par.update.out_width = _w_out; \
712 req->par.update.out_height = _h_out; \
713 req->par.update.bpp = bpp; \
714 req->par.update.color_mode = color_mode;\
715 req->par.update.flags = flags; \
716 list_add_tail(&req->entry, req_head); \
717 } while(0)
718
719 static void create_req_list(int plane_idx,
720 struct omapfb_update_window *win,
721 struct list_head *req_head)
722 {
723 struct blizzard_request *req;
724 int x = win->x;
725 int y = win->y;
726 int width = win->width;
727 int height = win->height;
728 int x_out = win->out_x;
729 int y_out = win->out_y;
730 int width_out = win->out_width;
731 int height_out = win->out_height;
732 int color_mode;
733 int bpp;
734 int flags;
735 unsigned int ystart = y;
736 unsigned int yspan = height;
737 unsigned int ystart_out = y_out;
738 unsigned int yspan_out = height_out;
739
740 flags = win->format & ~OMAPFB_FORMAT_MASK;
741 color_mode = win->format & OMAPFB_FORMAT_MASK;
742 switch (color_mode) {
743 case OMAPFB_COLOR_YUV420:
744 /* Embedded window with different color mode */
745 bpp = 12;
746 /* X, Y, height must be aligned at 2, width at 4 pixels */
747 x &= ~1;
748 y &= ~1;
749 height = yspan = height & ~1;
750 width = width & ~3;
751 break;
752 default:
753 /* Same as the plane color mode */
754 bpp = blizzard.plane[plane_idx].bpp;
755 break;
756 }
757 if (width * height * bpp / 8 > blizzard.max_transmit_size) {
758 yspan = blizzard.max_transmit_size / (width * bpp / 8);
759 yspan_out = yspan * height_out / height;
760 ADD_PREQ(x, ystart, width, yspan, x_out, ystart_out,
761 width_out, yspan_out);
762 ystart += yspan;
763 ystart_out += yspan_out;
764 yspan = height - yspan;
765 yspan_out = height_out - yspan_out;
766 flags &= ~OMAPFB_FORMAT_FLAG_TEARSYNC;
767 }
768
769 ADD_PREQ(x, ystart, width, yspan, x_out, ystart_out,
770 width_out, yspan_out);
771 }
772
773 static void auto_update_complete(void *data)
774 {
775 if (!blizzard.stop_auto_update)
776 mod_timer(&blizzard.auto_update_timer,
777 jiffies + BLIZZARD_AUTO_UPDATE_TIME);
778 }
779
780 static void blizzard_update_window_auto(unsigned long arg)
781 {
782 LIST_HEAD(req_list);
783 struct blizzard_request *last;
784 struct omapfb_plane_struct *plane;
785
786 plane = blizzard.fbdev->fb_info[0]->par;
787 create_req_list(plane->idx,
788 &blizzard.auto_update_window, &req_list);
789 last = list_entry(req_list.prev, struct blizzard_request, entry);
790
791 last->complete = auto_update_complete;
792 last->complete_data = NULL;
793
794 submit_req_list(&req_list);
795 }
796
797 int blizzard_update_window_async(struct fb_info *fbi,
798 struct omapfb_update_window *win,
799 void (*complete_callback)(void *arg),
800 void *complete_callback_data)
801 {
802 LIST_HEAD(req_list);
803 struct blizzard_request *last;
804 struct omapfb_plane_struct *plane = fbi->par;
805
806 if (unlikely(blizzard.update_mode != OMAPFB_MANUAL_UPDATE))
807 return -EINVAL;
808 if (unlikely(!blizzard.te_connected &&
809 (win->format & OMAPFB_FORMAT_FLAG_TEARSYNC)))
810 return -EINVAL;
811
812 create_req_list(plane->idx, win, &req_list);
813 last = list_entry(req_list.prev, struct blizzard_request, entry);
814
815 last->complete = complete_callback;
816 last->complete_data = (void *)complete_callback_data;
817
818 submit_req_list(&req_list);
819
820 return 0;
821 }
822 EXPORT_SYMBOL(blizzard_update_window_async);
823
824 static int update_full_screen(void)
825 {
826 return blizzard_update_window_async(blizzard.fbdev->fb_info[0],
827 &blizzard.auto_update_window, NULL, NULL);
828
829 }
830
831 static int blizzard_setup_plane(int plane, int channel_out,
832 unsigned long offset, int screen_width,
833 int pos_x, int pos_y, int width, int height,
834 int color_mode)
835 {
836 struct plane_info *p;
837
838 #ifdef VERBOSE
839 dev_dbg(blizzard.fbdev->dev,
840 "plane %d ch_out %d offset %#08lx scr_width %d "
841 "pos_x %d pos_y %d width %d height %d color_mode %d\n",
842 plane, channel_out, offset, screen_width,
843 pos_x, pos_y, width, height, color_mode);
844 #endif
845 if ((unsigned)plane > OMAPFB_PLANE_NUM)
846 return -EINVAL;
847 p = &blizzard.plane[plane];
848
849 switch (color_mode) {
850 case OMAPFB_COLOR_YUV422:
851 case OMAPFB_COLOR_YUY422:
852 p->bpp = 16;
853 blizzard.vid_nonstd_color &= ~(1 << plane);
854 break;
855 case OMAPFB_COLOR_YUV420:
856 p->bpp = 12;
857 blizzard.vid_nonstd_color |= 1 << plane;
858 break;
859 case OMAPFB_COLOR_RGB565:
860 p->bpp = 16;
861 blizzard.vid_nonstd_color &= ~(1 << plane);
862 break;
863 default:
864 return -EINVAL;
865 }
866
867 p->offset = offset;
868 p->pos_x = pos_x;
869 p->pos_y = pos_y;
870 p->width = width;
871 p->height = height;
872 p->scr_width = screen_width;
873 if (!p->out_width)
874 p->out_width = width;
875 if (!p->out_height)
876 p->out_height = height;
877
878 p->color_mode = color_mode;
879
880 return 0;
881 }
882
883 static int blizzard_set_scale(int plane, int orig_w, int orig_h,
884 int out_w, int out_h)
885 {
886 struct plane_info *p = &blizzard.plane[plane];
887 int r;
888
889 dev_dbg(blizzard.fbdev->dev,
890 "plane %d orig_w %d orig_h %d out_w %d out_h %d\n",
891 plane, orig_w, orig_h, out_w, out_h);
892 if ((unsigned)plane > OMAPFB_PLANE_NUM)
893 return -ENODEV;
894
895 r = blizzard.int_ctrl->set_scale(plane, orig_w, orig_h, out_w, out_h);
896 if (r < 0)
897 return r;
898
899 p->width = orig_w;
900 p->height = orig_h;
901 p->out_width = out_w;
902 p->out_height = out_h;
903 if (orig_w == out_w && orig_h == out_h)
904 blizzard.vid_scaled &= ~(1 << plane);
905 else
906 blizzard.vid_scaled |= 1 << plane;
907
908 return 0;
909 }
910
911 static int blizzard_enable_plane(int plane, int enable)
912 {
913 if (enable)
914 blizzard.enabled_planes |= 1 << plane;
915 else
916 blizzard.enabled_planes &= ~(1 << plane);
917
918 return 0;
919 }
920
921 static int sync_handler(struct blizzard_request *req)
922 {
923 complete(req->par.sync);
924 return REQ_COMPLETE;
925 }
926
927 static void blizzard_sync(void)
928 {
929 LIST_HEAD(req_list);
930 struct blizzard_request *req;
931 struct completion comp;
932
933 req = alloc_req();
934
935 req->handler = sync_handler;
936 req->complete = NULL;
937 init_completion(&comp);
938 req->par.sync = &comp;
939
940 list_add(&req->entry, &req_list);
941 submit_req_list(&req_list);
942
943 wait_for_completion(&comp);
944 }
945
946
947 static void blizzard_bind_client(struct omapfb_notifier_block *nb)
948 {
949 if (blizzard.update_mode == OMAPFB_MANUAL_UPDATE) {
950 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
951 }
952 }
953
954 static int blizzard_set_update_mode(enum omapfb_update_mode mode)
955 {
956 if (unlikely(mode != OMAPFB_MANUAL_UPDATE &&
957 mode != OMAPFB_AUTO_UPDATE &&
958 mode != OMAPFB_UPDATE_DISABLED))
959 return -EINVAL;
960
961 if (mode == blizzard.update_mode)
962 return 0;
963
964 dev_info(blizzard.fbdev->dev, "s1d1374x: setting update mode to %s\n",
965 mode == OMAPFB_UPDATE_DISABLED ? "disabled" :
966 (mode == OMAPFB_AUTO_UPDATE ? "auto" : "manual"));
967
968 switch (blizzard.update_mode) {
969 case OMAPFB_MANUAL_UPDATE:
970 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_DISABLED);
971 break;
972 case OMAPFB_AUTO_UPDATE:
973 blizzard.stop_auto_update = 1;
974 del_timer_sync(&blizzard.auto_update_timer);
975 break;
976 case OMAPFB_UPDATE_DISABLED:
977 break;
978 }
979
980 blizzard.update_mode = mode;
981 blizzard_sync();
982 blizzard.stop_auto_update = 0;
983
984 switch (mode) {
985 case OMAPFB_MANUAL_UPDATE:
986 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
987 break;
988 case OMAPFB_AUTO_UPDATE:
989 blizzard_update_window_auto(0);
990 break;
991 case OMAPFB_UPDATE_DISABLED:
992 break;
993 }
994
995 return 0;
996 }
997
998 static enum omapfb_update_mode blizzard_get_update_mode(void)
999 {
1000 return blizzard.update_mode;
1001 }
1002
1003 static inline void set_extif_timings(const struct extif_timings *t)
1004 {
1005 blizzard.extif->set_timings(t);
1006 }
1007
1008 static inline unsigned long round_to_extif_ticks(unsigned long ps, int div)
1009 {
1010 int bus_tick = blizzard.extif_clk_period * div;
1011 return (ps + bus_tick - 1) / bus_tick * bus_tick;
1012 }
1013
1014 static int calc_reg_timing(unsigned long sysclk, int div)
1015 {
1016 struct extif_timings *t;
1017 unsigned long systim;
1018
1019 /* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
1020 * AccessTime 2 ns + 12.2 ns (regs),
1021 * WEOffTime = WEOnTime + 1 ns,
1022 * REOffTime = REOnTime + 12 ns (regs),
1023 * CSOffTime = REOffTime + 1 ns
1024 * ReadCycle = 2ns + 2*SYSCLK (regs),
1025 * WriteCycle = 2*SYSCLK + 2 ns,
1026 * CSPulseWidth = 10 ns */
1027
1028 systim = 1000000000 / (sysclk / 1000);
1029 dev_dbg(blizzard.fbdev->dev,
1030 "Blizzard systim %lu ps extif_clk_period %u div %d\n",
1031 systim, blizzard.extif_clk_period, div);
1032
1033 t = &blizzard.reg_timings;
1034 memset(t, 0, sizeof(*t));
1035
1036 t->clk_div = div;
1037
1038 t->cs_on_time = 0;
1039 t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1040 t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1041 t->access_time = round_to_extif_ticks(t->re_on_time + 12200, div);
1042 t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
1043 t->re_off_time = round_to_extif_ticks(t->re_on_time + 13000, div);
1044 t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
1045 t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
1046 if (t->we_cycle_time < t->we_off_time)
1047 t->we_cycle_time = t->we_off_time;
1048 t->re_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
1049 if (t->re_cycle_time < t->re_off_time)
1050 t->re_cycle_time = t->re_off_time;
1051 t->cs_pulse_width = 0;
1052
1053 dev_dbg(blizzard.fbdev->dev, "[reg]cson %d csoff %d reon %d reoff %d\n",
1054 t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
1055 dev_dbg(blizzard.fbdev->dev, "[reg]weon %d weoff %d recyc %d wecyc %d\n",
1056 t->we_on_time, t->we_off_time, t->re_cycle_time,
1057 t->we_cycle_time);
1058 dev_dbg(blizzard.fbdev->dev, "[reg]rdaccess %d cspulse %d\n",
1059 t->access_time, t->cs_pulse_width);
1060
1061 return blizzard.extif->convert_timings(t);
1062 }
1063
1064 static int calc_lut_timing(unsigned long sysclk, int div)
1065 {
1066 struct extif_timings *t;
1067 unsigned long systim;
1068
1069 /* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
1070 * AccessTime 2 ns + 4 * SYSCLK + 26 (lut),
1071 * WEOffTime = WEOnTime + 1 ns,
1072 * REOffTime = REOnTime + 4*SYSCLK + 26 ns (lut),
1073 * CSOffTime = REOffTime + 1 ns
1074 * ReadCycle = 2ns + 4*SYSCLK + 26 ns (lut),
1075 * WriteCycle = 2*SYSCLK + 2 ns,
1076 * CSPulseWidth = 10 ns */
1077
1078 systim = 1000000000 / (sysclk / 1000);
1079 dev_dbg(blizzard.fbdev->dev,
1080 "Blizzard systim %lu ps extif_clk_period %u div %d\n",
1081 systim, blizzard.extif_clk_period, div);
1082
1083 t = &blizzard.lut_timings;
1084 memset(t, 0, sizeof(*t));
1085
1086 t->clk_div = div;
1087
1088 t->cs_on_time = 0;
1089 t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1090 t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
1091 t->access_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
1092 26000, div);
1093 t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
1094 t->re_off_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
1095 26000, div);
1096 t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
1097 t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
1098 if (t->we_cycle_time < t->we_off_time)
1099 t->we_cycle_time = t->we_off_time;
1100 t->re_cycle_time = round_to_extif_ticks(2000 + 4 * systim + 26000, div);
1101 if (t->re_cycle_time < t->re_off_time)
1102 t->re_cycle_time = t->re_off_time;
1103 t->cs_pulse_width = 0;
1104
1105 dev_dbg(blizzard.fbdev->dev,
1106 "[lut]cson %d csoff %d reon %d reoff %d\n",
1107 t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
1108 dev_dbg(blizzard.fbdev->dev,
1109 "[lut]weon %d weoff %d recyc %d wecyc %d\n",
1110 t->we_on_time, t->we_off_time, t->re_cycle_time,
1111 t->we_cycle_time);
1112 dev_dbg(blizzard.fbdev->dev, "[lut]rdaccess %d cspulse %d\n",
1113 t->access_time, t->cs_pulse_width);
1114
1115 return blizzard.extif->convert_timings(t);
1116 }
1117
1118 static int calc_extif_timings(unsigned long sysclk, int *extif_mem_div)
1119 {
1120 int max_clk_div;
1121 int div;
1122
1123 blizzard.extif->get_clk_info(&blizzard.extif_clk_period, &max_clk_div);
1124 for (div = 1; div <= max_clk_div; div++) {
1125 if (calc_reg_timing(sysclk, div) == 0)
1126 break;
1127 }
1128 if (div > max_clk_div) {
1129 dev_dbg(blizzard.fbdev->dev, "reg timing failed\n");
1130 goto err;
1131 }
1132 *extif_mem_div = div;
1133
1134 for (div = 1; div <= max_clk_div; div++) {
1135 if (calc_lut_timing(sysclk, div) == 0)
1136 break;
1137 }
1138
1139 if (div > max_clk_div)
1140 goto err;
1141
1142 blizzard.extif_clk_div = div;
1143
1144 return 0;
1145 err:
1146 dev_err(blizzard.fbdev->dev, "can't setup timings\n");
1147 return -1;
1148 }
1149
1150 static void calc_blizzard_clk_rates(unsigned long ext_clk,
1151 unsigned long *sys_clk, unsigned long *pix_clk)
1152 {
1153 int pix_clk_src;
1154 int sys_div = 0, sys_mul = 0;
1155 int pix_div;
1156
1157 pix_clk_src = blizzard_read_reg(BLIZZARD_CLK_SRC);
1158 pix_div = ((pix_clk_src >> 3) & 0x1f) + 1;
1159 if ((pix_clk_src & (0x3 << 1)) == 0) {
1160 /* Source is the PLL */
1161 sys_div = (blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x3f) + 1;
1162 sys_mul = blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_0);
1163 sys_mul |= ((blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_1)
1164 & 0x0f) << 11);
1165 *sys_clk = ext_clk * sys_mul / sys_div;
1166 } else /* else source is ext clk, or oscillator */
1167 *sys_clk = ext_clk;
1168
1169 *pix_clk = *sys_clk / pix_div; /* HZ */
1170 dev_dbg(blizzard.fbdev->dev,
1171 "ext_clk %ld pix_src %d pix_div %d sys_div %d sys_mul %d\n",
1172 ext_clk, pix_clk_src & (0x3 << 1), pix_div, sys_div, sys_mul);
1173 dev_dbg(blizzard.fbdev->dev, "sys_clk %ld pix_clk %ld\n",
1174 *sys_clk, *pix_clk);
1175 }
1176
1177 static int setup_tearsync(unsigned long pix_clk, int extif_div)
1178 {
1179 int hdisp, vdisp;
1180 int hndp, vndp;
1181 int hsw, vsw;
1182 int hs, vs;
1183 int hs_pol_inv, vs_pol_inv;
1184 int use_hsvs, use_ndp;
1185 u8 b;
1186
1187 hsw = blizzard_read_reg(BLIZZARD_HSW);
1188 vsw = blizzard_read_reg(BLIZZARD_VSW);
1189 hs_pol_inv = !(hsw & 0x80);
1190 vs_pol_inv = !(vsw & 0x80);
1191 hsw = hsw & 0x7f;
1192 vsw = vsw & 0x3f;
1193
1194 hdisp = blizzard_read_reg(BLIZZARD_HDISP) * 8;
1195 vdisp = blizzard_read_reg(BLIZZARD_VDISP0) +
1196 ((blizzard_read_reg(BLIZZARD_VDISP1) & 0x3) << 8);
1197
1198 hndp = blizzard_read_reg(BLIZZARD_HNDP) & 0x3f;
1199 vndp = blizzard_read_reg(BLIZZARD_VNDP);
1200
1201 /* time to transfer one pixel (16bpp) in ps */
1202 blizzard.pix_tx_time = blizzard.reg_timings.we_cycle_time;
1203 if (blizzard.extif->get_max_tx_rate != NULL) {
1204 /* The external interface might have a rate limitation,
1205 * if so, we have to maximize our transfer rate.
1206 */
1207 unsigned long min_tx_time;
1208 unsigned long max_tx_rate = blizzard.extif->get_max_tx_rate();
1209
1210 dev_dbg(blizzard.fbdev->dev, "max_tx_rate %ld HZ\n",
1211 max_tx_rate);
1212 min_tx_time = 1000000000 / (max_tx_rate / 1000); /* ps */
1213 if (blizzard.pix_tx_time < min_tx_time)
1214 blizzard.pix_tx_time = min_tx_time;
1215 }
1216
1217 /* time to update one line in ps */
1218 blizzard.line_upd_time = (hdisp + hndp) * 1000000 / (pix_clk / 1000);
1219 blizzard.line_upd_time *= 1000;
1220 if (hdisp * blizzard.pix_tx_time > blizzard.line_upd_time)
1221 /* transfer speed too low, we might have to use both
1222 * HS and VS */
1223 use_hsvs = 1;
1224 else
1225 /* decent transfer speed, we'll always use only VS */
1226 use_hsvs = 0;
1227
1228 if (use_hsvs && (hs_pol_inv || vs_pol_inv)) {
1229 /* HS or'ed with VS doesn't work, use the active high
1230 * TE signal based on HNDP / VNDP */
1231 use_ndp = 1;
1232 hs_pol_inv = 0;
1233 vs_pol_inv = 0;
1234 hs = hndp;
1235 vs = vndp;
1236 } else {
1237 /* Use HS or'ed with VS as a TE signal if both are needed
1238 * or VNDP if only vsync is needed. */
1239 use_ndp = 0;
1240 hs = hsw;
1241 vs = vsw;
1242 if (!use_hsvs) {
1243 hs_pol_inv = 0;
1244 vs_pol_inv = 0;
1245 }
1246 }
1247
1248 hs = hs * 1000000 / (pix_clk / 1000); /* ps */
1249 hs *= 1000;
1250
1251 vs = vs * (hdisp + hndp) * 1000000 / (pix_clk / 1000); /* ps */
1252 vs *= 1000;
1253
1254 if (vs <= hs)
1255 return -EDOM;
1256 /* set VS to 120% of HS to minimize VS detection time */
1257 vs = hs * 12 / 10;
1258 /* minimize HS too */
1259 if (hs > 10000)
1260 hs = 10000;
1261
1262 b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
1263 b &= ~0x3;
1264 b |= use_hsvs ? 1 : 0;
1265 b |= (use_ndp && use_hsvs) ? 0 : 2;
1266 blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
1267
1268 blizzard.vsync_only = !use_hsvs;
1269
1270 dev_dbg(blizzard.fbdev->dev,
1271 "pix_clk %ld HZ pix_tx_time %ld ps line_upd_time %ld ps\n",
1272 pix_clk, blizzard.pix_tx_time, blizzard.line_upd_time);
1273 dev_dbg(blizzard.fbdev->dev,
1274 "hs %d ps vs %d ps mode %d vsync_only %d\n",
1275 hs, vs, b & 0x3, !use_hsvs);
1276
1277 return blizzard.extif->setup_tearsync(1, hs, vs,
1278 hs_pol_inv, vs_pol_inv,
1279 extif_div);
1280 }
1281
1282 static void blizzard_get_caps(int plane, struct omapfb_caps *caps)
1283 {
1284 blizzard.int_ctrl->get_caps(plane, caps);
1285 caps->ctrl |= OMAPFB_CAPS_MANUAL_UPDATE |
1286 OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE |
1287 OMAPFB_CAPS_WINDOW_SCALE |
1288 OMAPFB_CAPS_WINDOW_OVERLAY;
1289 if (blizzard.te_connected)
1290 caps->ctrl |= OMAPFB_CAPS_TEARSYNC;
1291 caps->wnd_color |= (1 << OMAPFB_COLOR_RGB565) |
1292 (1 << OMAPFB_COLOR_YUV420);
1293 }
1294
1295 static void _save_regs(struct blizzard_reg_list *list, int cnt)
1296 {
1297 int i;
1298
1299 for (i = 0; i < cnt; i++, list++) {
1300 int reg;
1301 for (reg = list->start; reg <= list->end; reg += 2)
1302 blizzard_reg_cache[reg / 2] = blizzard_read_reg(reg);
1303 }
1304 }
1305
1306 static void _restore_regs(struct blizzard_reg_list *list, int cnt)
1307 {
1308 int i;
1309
1310 for (i = 0; i < cnt; i++, list++) {
1311 int reg;
1312 for (reg = list->start; reg <= list->end; reg += 2)
1313 blizzard_write_reg(reg, blizzard_reg_cache[reg / 2]);
1314 }
1315 }
1316
1317 static void blizzard_save_all_regs(void)
1318 {
1319 _save_regs(blizzard_pll_regs, ARRAY_SIZE(blizzard_pll_regs));
1320 _save_regs(blizzard_gen_regs, ARRAY_SIZE(blizzard_gen_regs));
1321 }
1322
1323 static void blizzard_restore_pll_regs(void)
1324 {
1325 _restore_regs(blizzard_pll_regs, ARRAY_SIZE(blizzard_pll_regs));
1326 }
1327
1328 static void blizzard_restore_gen_regs(void)
1329 {
1330 _restore_regs(blizzard_gen_regs, ARRAY_SIZE(blizzard_gen_regs));
1331 }
1332
1333 static void blizzard_suspend(void)
1334 {
1335 u32 l;
1336 unsigned long tmo;
1337
1338 if (blizzard.last_color_mode) {
1339 update_full_screen();
1340 blizzard_sync();
1341 }
1342 blizzard.update_mode_before_suspend = blizzard.update_mode;
1343 /* the following will disable clocks as well */
1344 blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
1345
1346 blizzard_save_all_regs();
1347
1348 blizzard_stop_sdram();
1349
1350 l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
1351 /* Standby, Sleep. We assume we use an external clock. */
1352 l |= 0x03;
1353 blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
1354
1355 tmo = jiffies + msecs_to_jiffies(100);
1356 while (!(blizzard_read_reg(BLIZZARD_PLL_MODE) & (1 << 1))) {
1357 if (time_after(jiffies, tmo)) {
1358 dev_err(blizzard.fbdev->dev,
1359 "s1d1374x: sleep timeout, stopping PLL manually\n");
1360 l = blizzard_read_reg(BLIZZARD_PLL_MODE);
1361 l &= ~0x03;
1362 /* Disable PLL, counter function */
1363 l |= 0x2;
1364 blizzard_write_reg(BLIZZARD_PLL_MODE, l);
1365 break;
1366 }
1367 msleep(1);
1368 }
1369
1370 if (blizzard.power_down != NULL)
1371 blizzard.power_down(blizzard.fbdev->dev);
1372 }
1373
1374 static void blizzard_resume(void)
1375 {
1376 u32 l;
1377
1378 if (blizzard.power_up != NULL)
1379 blizzard.power_up(blizzard.fbdev->dev);
1380
1381 l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
1382 /* Standby, Sleep */
1383 l &= ~0x03;
1384 blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
1385
1386 blizzard_restore_pll_regs();
1387 l = blizzard_read_reg(BLIZZARD_PLL_MODE);
1388 l &= ~0x03;
1389 /* Enable PLL, counter function */
1390 l |= 0x1;
1391 blizzard_write_reg(BLIZZARD_PLL_MODE, l);
1392
1393 while (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & (1 << 7)))
1394 msleep(1);
1395
1396 blizzard_restart_sdram();
1397
1398 blizzard_restore_gen_regs();
1399
1400 /* Enable display */
1401 blizzard_write_reg(BLIZZARD_DISPLAY_MODE, 0x01);
1402
1403 /* the following will enable clocks as necessary */
1404 blizzard_set_update_mode(blizzard.update_mode_before_suspend);
1405
1406 /* Force a background update */
1407 blizzard.zoom_on = 1;
1408 update_full_screen();
1409 blizzard_sync();
1410 }
1411
1412 static int blizzard_init(struct omapfb_device *fbdev, int ext_mode,
1413 struct omapfb_mem_desc *req_vram)
1414 {
1415 int r = 0, i;
1416 u8 rev, conf;
1417 unsigned long ext_clk;
1418 int extif_div;
1419 unsigned long sys_clk, pix_clk;
1420 struct omapfb_platform_data *omapfb_conf;
1421 struct blizzard_platform_data *ctrl_conf;
1422
1423 blizzard.fbdev = fbdev;
1424
1425 BUG_ON(!fbdev->ext_if || !fbdev->int_ctrl);
1426
1427 blizzard.fbdev = fbdev;
1428 blizzard.extif = fbdev->ext_if;
1429 blizzard.int_ctrl = fbdev->int_ctrl;
1430
1431 omapfb_conf = fbdev->dev->platform_data;
1432 ctrl_conf = omapfb_conf->ctrl_platform_data;
1433 if (ctrl_conf == NULL || ctrl_conf->get_clock_rate == NULL) {
1434 dev_err(fbdev->dev, "s1d1374x: missing platform data\n");
1435 r = -ENOENT;
1436 goto err1;
1437 }
1438
1439 blizzard.power_down = ctrl_conf->power_down;
1440 blizzard.power_up = ctrl_conf->power_up;
1441
1442 spin_lock_init(&blizzard.req_lock);
1443
1444 if ((r = blizzard.int_ctrl->init(fbdev, 1, req_vram)) < 0)
1445 goto err1;
1446
1447 if ((r = blizzard.extif->init(fbdev)) < 0)
1448 goto err2;
1449
1450 blizzard_ctrl.set_color_key = blizzard.int_ctrl->set_color_key;
1451 blizzard_ctrl.get_color_key = blizzard.int_ctrl->get_color_key;
1452 blizzard_ctrl.setup_mem = blizzard.int_ctrl->setup_mem;
1453 blizzard_ctrl.mmap = blizzard.int_ctrl->mmap;
1454
1455 ext_clk = ctrl_conf->get_clock_rate(fbdev->dev);
1456 if ((r = calc_extif_timings(ext_clk, &extif_div)) < 0)
1457 goto err3;
1458
1459 set_extif_timings(&blizzard.reg_timings);
1460
1461 if (blizzard.power_up != NULL)
1462 blizzard.power_up(fbdev->dev);
1463
1464 calc_blizzard_clk_rates(ext_clk, &sys_clk, &pix_clk);
1465
1466 if ((r = calc_extif_timings(sys_clk, &extif_div)) < 0)
1467 goto err3;
1468 set_extif_timings(&blizzard.reg_timings);
1469
1470 if (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x80)) {
1471 dev_err(fbdev->dev,
1472 "controller not initialized by the bootloader\n");
1473 r = -ENODEV;
1474 goto err3;
1475 }
1476
1477 if (ctrl_conf->te_connected) {
1478 if ((r = setup_tearsync(pix_clk, extif_div)) < 0)
1479 goto err3;
1480 blizzard.te_connected = 1;
1481 }
1482
1483 rev = blizzard_read_reg(BLIZZARD_REV_CODE);
1484 conf = blizzard_read_reg(BLIZZARD_CONFIG);
1485
1486 switch (rev & 0xfc) {
1487 case 0x9c:
1488 blizzard.version = BLIZZARD_VERSION_S1D13744;
1489 pr_info("omapfb: s1d13744 LCD controller rev %d "
1490 "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
1491 break;
1492 case 0xa4:
1493 blizzard.version = BLIZZARD_VERSION_S1D13745;
1494 pr_info("omapfb: s1d13745 LCD controller rev %d "
1495 "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
1496 break;
1497 default:
1498 dev_err(fbdev->dev, "invalid s1d1374x revision %02x\n",
1499 rev);
1500 r = -ENODEV;
1501 goto err3;
1502 }
1503
1504 blizzard.max_transmit_size = blizzard.extif->max_transmit_size;
1505
1506 blizzard.update_mode = OMAPFB_UPDATE_DISABLED;
1507
1508 blizzard.auto_update_window.x = 0;
1509 blizzard.auto_update_window.y = 0;
1510 blizzard.auto_update_window.width = fbdev->panel->x_res;
1511 blizzard.auto_update_window.height = fbdev->panel->y_res;
1512 blizzard.auto_update_window.out_x = 0;
1513 blizzard.auto_update_window.out_x = 0;
1514 blizzard.auto_update_window.out_width = fbdev->panel->x_res;
1515 blizzard.auto_update_window.out_height = fbdev->panel->y_res;
1516 blizzard.auto_update_window.format = 0;
1517
1518 blizzard.screen_width = fbdev->panel->x_res;
1519 blizzard.screen_height = fbdev->panel->y_res;
1520
1521 init_timer(&blizzard.auto_update_timer);
1522 blizzard.auto_update_timer.function = blizzard_update_window_auto;
1523 blizzard.auto_update_timer.data = 0;
1524
1525 INIT_LIST_HEAD(&blizzard.free_req_list);
1526 INIT_LIST_HEAD(&blizzard.pending_req_list);
1527 for (i = 0; i < ARRAY_SIZE(blizzard.req_pool); i++)
1528 list_add(&blizzard.req_pool[i].entry, &blizzard.free_req_list);
1529 BUG_ON(i <= IRQ_REQ_POOL_SIZE);
1530 sema_init(&blizzard.req_sema, i - IRQ_REQ_POOL_SIZE);
1531
1532 return 0;
1533 err3:
1534 if (blizzard.power_down != NULL)
1535 blizzard.power_down(fbdev->dev);
1536 blizzard.extif->cleanup();
1537 err2:
1538 blizzard.int_ctrl->cleanup();
1539 err1:
1540 return r;
1541 }
1542
1543 static void blizzard_cleanup(void)
1544 {
1545 blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
1546 blizzard.extif->cleanup();
1547 blizzard.int_ctrl->cleanup();
1548 if (blizzard.power_down != NULL)
1549 blizzard.power_down(blizzard.fbdev->dev);
1550 }
1551
1552 struct lcd_ctrl blizzard_ctrl = {
1553 .name = "blizzard",
1554 .init = blizzard_init,
1555 .cleanup = blizzard_cleanup,
1556 .bind_client = blizzard_bind_client,
1557 .get_caps = blizzard_get_caps,
1558 .set_update_mode = blizzard_set_update_mode,
1559 .get_update_mode = blizzard_get_update_mode,
1560 .setup_plane = blizzard_setup_plane,
1561 .set_scale = blizzard_set_scale,
1562 .enable_plane = blizzard_enable_plane,
1563 .update_window = blizzard_update_window_async,
1564 .sync = blizzard_sync,
1565 .suspend = blizzard_suspend,
1566 .resume = blizzard_resume,
1567 };
1568
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