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Merge branch 'for-linus' of git://git.infradead.org/users/sameo/mfd-2.6
[linux-btrfs-devel.git] / drivers / media / video / davinci / vpbe_osd.c
blob5352884998f5bb7542157ee0d938ae262815617e
1 /*
2 * Copyright (C) 2007-2010 Texas Instruments Inc
3 * Copyright (C) 2007 MontaVista Software, Inc.
4 *
5 * Andy Lowe (alowe@mvista.com), MontaVista Software
6 * - Initial version
7 * Murali Karicheri (mkaricheri@gmail.com), Texas Instruments Ltd.
8 * - ported to sub device interface
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation version 2.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24 #include <linux/module.h>
25 #include <linux/kernel.h>
26 #include <linux/interrupt.h>
27 #include <linux/platform_device.h>
28 #include <linux/clk.h>
29 #include <linux/slab.h>
30
31 #include <mach/io.h>
32 #include <mach/cputype.h>
33 #include <mach/hardware.h>
34
35 #include <media/davinci/vpss.h>
36 #include <media/v4l2-device.h>
37 #include <media/davinci/vpbe_types.h>
38 #include <media/davinci/vpbe_osd.h>
39
40 #include <linux/io.h>
41 #include "vpbe_osd_regs.h"
42
43 #define MODULE_NAME VPBE_OSD_SUBDEV_NAME
44
45 /* register access routines */
46 static inline u32 osd_read(struct osd_state *sd, u32 offset)
47 {
48 struct osd_state *osd = sd;
49
50 return readl(osd->osd_base + offset);
51 }
52
53 static inline u32 osd_write(struct osd_state *sd, u32 val, u32 offset)
54 {
55 struct osd_state *osd = sd;
56
57 writel(val, osd->osd_base + offset);
58
59 return val;
60 }
61
62 static inline u32 osd_set(struct osd_state *sd, u32 mask, u32 offset)
63 {
64 struct osd_state *osd = sd;
65
66 u32 addr = osd->osd_base + offset;
67 u32 val = readl(addr) | mask;
68
69 writel(val, addr);
70
71 return val;
72 }
73
74 static inline u32 osd_clear(struct osd_state *sd, u32 mask, u32 offset)
75 {
76 struct osd_state *osd = sd;
77
78 u32 addr = osd->osd_base + offset;
79 u32 val = readl(addr) & ~mask;
80
81 writel(val, addr);
82
83 return val;
84 }
85
86 static inline u32 osd_modify(struct osd_state *sd, u32 mask, u32 val,
87 u32 offset)
88 {
89 struct osd_state *osd = sd;
90
91 u32 addr = osd->osd_base + offset;
92 u32 new_val = (readl(addr) & ~mask) | (val & mask);
93
94 writel(new_val, addr);
95
96 return new_val;
97 }
98
99 /* define some macros for layer and pixfmt classification */
100 #define is_osd_win(layer) (((layer) == WIN_OSD0) || ((layer) == WIN_OSD1))
101 #define is_vid_win(layer) (((layer) == WIN_VID0) || ((layer) == WIN_VID1))
102 #define is_rgb_pixfmt(pixfmt) \
103 (((pixfmt) == PIXFMT_RGB565) || ((pixfmt) == PIXFMT_RGB888))
104 #define is_yc_pixfmt(pixfmt) \
105 (((pixfmt) == PIXFMT_YCbCrI) || ((pixfmt) == PIXFMT_YCrCbI) || \
106 ((pixfmt) == PIXFMT_NV12))
107 #define MAX_WIN_SIZE OSD_VIDWIN0XP_V0X
108 #define MAX_LINE_LENGTH (OSD_VIDWIN0OFST_V0LO << 5)
109
110 /**
111 * _osd_dm6446_vid0_pingpong() - field inversion fix for DM6446
112 * @sd - ptr to struct osd_state
113 * @field_inversion - inversion flag
114 * @fb_base_phys - frame buffer address
115 * @lconfig - ptr to layer config
116 *
117 * This routine implements a workaround for the field signal inversion silicon
118 * erratum described in Advisory 1.3.8 for the DM6446. The fb_base_phys and
119 * lconfig parameters apply to the vid0 window. This routine should be called
120 * whenever the vid0 layer configuration or start address is modified, or when
121 * the OSD field inversion setting is modified.
122 * Returns: 1 if the ping-pong buffers need to be toggled in the vsync isr, or
123 * 0 otherwise
124 */
125 static int _osd_dm6446_vid0_pingpong(struct osd_state *sd,
126 int field_inversion,
127 unsigned long fb_base_phys,
128 const struct osd_layer_config *lconfig)
129 {
130 struct osd_platform_data *pdata;
131
132 pdata = (struct osd_platform_data *)sd->dev->platform_data;
133 if (pdata->field_inv_wa_enable) {
134
135 if (!field_inversion || !lconfig->interlaced) {
136 osd_write(sd, fb_base_phys & ~0x1F, OSD_VIDWIN0ADR);
137 osd_write(sd, fb_base_phys & ~0x1F, OSD_PPVWIN0ADR);
138 osd_modify(sd, OSD_MISCCTL_PPSW | OSD_MISCCTL_PPRV, 0,
139 OSD_MISCCTL);
140 return 0;
141 } else {
142 unsigned miscctl = OSD_MISCCTL_PPRV;
143
144 osd_write(sd,
145 (fb_base_phys & ~0x1F) - lconfig->line_length,
146 OSD_VIDWIN0ADR);
147 osd_write(sd,
148 (fb_base_phys & ~0x1F) + lconfig->line_length,
149 OSD_PPVWIN0ADR);
150 osd_modify(sd,
151 OSD_MISCCTL_PPSW | OSD_MISCCTL_PPRV, miscctl,
152 OSD_MISCCTL);
153
154 return 1;
155 }
156 }
157
158 return 0;
159 }
160
161 static void _osd_set_field_inversion(struct osd_state *sd, int enable)
162 {
163 unsigned fsinv = 0;
164
165 if (enable)
166 fsinv = OSD_MODE_FSINV;
167
168 osd_modify(sd, OSD_MODE_FSINV, fsinv, OSD_MODE);
169 }
170
171 static void _osd_set_blink_attribute(struct osd_state *sd, int enable,
172 enum osd_blink_interval blink)
173 {
174 u32 osdatrmd = 0;
175
176 if (enable) {
177 osdatrmd |= OSD_OSDATRMD_BLNK;
178 osdatrmd |= blink << OSD_OSDATRMD_BLNKINT_SHIFT;
179 }
180 /* caller must ensure that OSD1 is configured in attribute mode */
181 osd_modify(sd, OSD_OSDATRMD_BLNKINT | OSD_OSDATRMD_BLNK, osdatrmd,
182 OSD_OSDATRMD);
183 }
184
185 static void _osd_set_rom_clut(struct osd_state *sd,
186 enum osd_rom_clut rom_clut)
187 {
188 if (rom_clut == ROM_CLUT0)
189 osd_clear(sd, OSD_MISCCTL_RSEL, OSD_MISCCTL);
190 else
191 osd_set(sd, OSD_MISCCTL_RSEL, OSD_MISCCTL);
192 }
193
194 static void _osd_set_palette_map(struct osd_state *sd,
195 enum osd_win_layer osdwin,
196 unsigned char pixel_value,
197 unsigned char clut_index,
198 enum osd_pix_format pixfmt)
199 {
200 static const int map_2bpp[] = { 0, 5, 10, 15 };
201 static const int map_1bpp[] = { 0, 15 };
202 int bmp_offset;
203 int bmp_shift;
204 int bmp_mask;
205 int bmp_reg;
206
207 switch (pixfmt) {
208 case PIXFMT_1BPP:
209 bmp_reg = map_1bpp[pixel_value & 0x1];
210 break;
211 case PIXFMT_2BPP:
212 bmp_reg = map_2bpp[pixel_value & 0x3];
213 break;
214 case PIXFMT_4BPP:
215 bmp_reg = pixel_value & 0xf;
216 break;
217 default:
218 return;
219 }
220
221 switch (osdwin) {
222 case OSDWIN_OSD0:
223 bmp_offset = OSD_W0BMP01 + (bmp_reg >> 1) * sizeof(u32);
224 break;
225 case OSDWIN_OSD1:
226 bmp_offset = OSD_W1BMP01 + (bmp_reg >> 1) * sizeof(u32);
227 break;
228 default:
229 return;
230 }
231
232 if (bmp_reg & 1) {
233 bmp_shift = 8;
234 bmp_mask = 0xff << 8;
235 } else {
236 bmp_shift = 0;
237 bmp_mask = 0xff;
238 }
239
240 osd_modify(sd, bmp_mask, clut_index << bmp_shift, bmp_offset);
241 }
242
243 static void _osd_set_rec601_attenuation(struct osd_state *sd,
244 enum osd_win_layer osdwin, int enable)
245 {
246 switch (osdwin) {
247 case OSDWIN_OSD0:
248 osd_modify(sd, OSD_OSDWIN0MD_ATN0E,
249 enable ? OSD_OSDWIN0MD_ATN0E : 0,
250 OSD_OSDWIN0MD);
251 break;
252 case OSDWIN_OSD1:
253 osd_modify(sd, OSD_OSDWIN1MD_ATN1E,
254 enable ? OSD_OSDWIN1MD_ATN1E : 0,
255 OSD_OSDWIN1MD);
256 break;
257 }
258 }
259
260 static void _osd_set_blending_factor(struct osd_state *sd,
261 enum osd_win_layer osdwin,
262 enum osd_blending_factor blend)
263 {
264 switch (osdwin) {
265 case OSDWIN_OSD0:
266 osd_modify(sd, OSD_OSDWIN0MD_BLND0,
267 blend << OSD_OSDWIN0MD_BLND0_SHIFT, OSD_OSDWIN0MD);
268 break;
269 case OSDWIN_OSD1:
270 osd_modify(sd, OSD_OSDWIN1MD_BLND1,
271 blend << OSD_OSDWIN1MD_BLND1_SHIFT, OSD_OSDWIN1MD);
272 break;
273 }
274 }
275
276 static void _osd_enable_color_key(struct osd_state *sd,
277 enum osd_win_layer osdwin,
278 unsigned colorkey,
279 enum osd_pix_format pixfmt)
280 {
281 switch (pixfmt) {
282 case PIXFMT_RGB565:
283 osd_write(sd, colorkey & OSD_TRANSPVAL_RGBTRANS,
284 OSD_TRANSPVAL);
285 break;
286 default:
287 break;
288 }
289
290 switch (osdwin) {
291 case OSDWIN_OSD0:
292 osd_set(sd, OSD_OSDWIN0MD_TE0, OSD_OSDWIN0MD);
293 break;
294 case OSDWIN_OSD1:
295 osd_set(sd, OSD_OSDWIN1MD_TE1, OSD_OSDWIN1MD);
296 break;
297 }
298 }
299
300 static void _osd_disable_color_key(struct osd_state *sd,
301 enum osd_win_layer osdwin)
302 {
303 switch (osdwin) {
304 case OSDWIN_OSD0:
305 osd_clear(sd, OSD_OSDWIN0MD_TE0, OSD_OSDWIN0MD);
306 break;
307 case OSDWIN_OSD1:
308 osd_clear(sd, OSD_OSDWIN1MD_TE1, OSD_OSDWIN1MD);
309 break;
310 }
311 }
312
313 static void _osd_set_osd_clut(struct osd_state *sd,
314 enum osd_win_layer osdwin,
315 enum osd_clut clut)
316 {
317 u32 winmd = 0;
318
319 switch (osdwin) {
320 case OSDWIN_OSD0:
321 if (clut == RAM_CLUT)
322 winmd |= OSD_OSDWIN0MD_CLUTS0;
323 osd_modify(sd, OSD_OSDWIN0MD_CLUTS0, winmd, OSD_OSDWIN0MD);
324 break;
325 case OSDWIN_OSD1:
326 if (clut == RAM_CLUT)
327 winmd |= OSD_OSDWIN1MD_CLUTS1;
328 osd_modify(sd, OSD_OSDWIN1MD_CLUTS1, winmd, OSD_OSDWIN1MD);
329 break;
330 }
331 }
332
333 static void _osd_set_zoom(struct osd_state *sd, enum osd_layer layer,
334 enum osd_zoom_factor h_zoom,
335 enum osd_zoom_factor v_zoom)
336 {
337 u32 winmd = 0;
338
339 switch (layer) {
340 case WIN_OSD0:
341 winmd |= (h_zoom << OSD_OSDWIN0MD_OHZ0_SHIFT);
342 winmd |= (v_zoom << OSD_OSDWIN0MD_OVZ0_SHIFT);
343 osd_modify(sd, OSD_OSDWIN0MD_OHZ0 | OSD_OSDWIN0MD_OVZ0, winmd,
344 OSD_OSDWIN0MD);
345 break;
346 case WIN_VID0:
347 winmd |= (h_zoom << OSD_VIDWINMD_VHZ0_SHIFT);
348 winmd |= (v_zoom << OSD_VIDWINMD_VVZ0_SHIFT);
349 osd_modify(sd, OSD_VIDWINMD_VHZ0 | OSD_VIDWINMD_VVZ0, winmd,
350 OSD_VIDWINMD);
351 break;
352 case WIN_OSD1:
353 winmd |= (h_zoom << OSD_OSDWIN1MD_OHZ1_SHIFT);
354 winmd |= (v_zoom << OSD_OSDWIN1MD_OVZ1_SHIFT);
355 osd_modify(sd, OSD_OSDWIN1MD_OHZ1 | OSD_OSDWIN1MD_OVZ1, winmd,
356 OSD_OSDWIN1MD);
357 break;
358 case WIN_VID1:
359 winmd |= (h_zoom << OSD_VIDWINMD_VHZ1_SHIFT);
360 winmd |= (v_zoom << OSD_VIDWINMD_VVZ1_SHIFT);
361 osd_modify(sd, OSD_VIDWINMD_VHZ1 | OSD_VIDWINMD_VVZ1, winmd,
362 OSD_VIDWINMD);
363 break;
364 }
365 }
366
367 static void _osd_disable_layer(struct osd_state *sd, enum osd_layer layer)
368 {
369 switch (layer) {
370 case WIN_OSD0:
371 osd_clear(sd, OSD_OSDWIN0MD_OACT0, OSD_OSDWIN0MD);
372 break;
373 case WIN_VID0:
374 osd_clear(sd, OSD_VIDWINMD_ACT0, OSD_VIDWINMD);
375 break;
376 case WIN_OSD1:
377 /* disable attribute mode as well as disabling the window */
378 osd_clear(sd, OSD_OSDWIN1MD_OASW | OSD_OSDWIN1MD_OACT1,
379 OSD_OSDWIN1MD);
380 break;
381 case WIN_VID1:
382 osd_clear(sd, OSD_VIDWINMD_ACT1, OSD_VIDWINMD);
383 break;
384 }
385 }
386
387 static void osd_disable_layer(struct osd_state *sd, enum osd_layer layer)
388 {
389 struct osd_state *osd = sd;
390 struct osd_window_state *win = &osd->win[layer];
391 unsigned long flags;
392
393 spin_lock_irqsave(&osd->lock, flags);
394
395 if (!win->is_enabled) {
396 spin_unlock_irqrestore(&osd->lock, flags);
397 return;
398 }
399 win->is_enabled = 0;
400
401 _osd_disable_layer(sd, layer);
402
403 spin_unlock_irqrestore(&osd->lock, flags);
404 }
405
406 static void _osd_enable_attribute_mode(struct osd_state *sd)
407 {
408 /* enable attribute mode for OSD1 */
409 osd_set(sd, OSD_OSDWIN1MD_OASW, OSD_OSDWIN1MD);
410 }
411
412 static void _osd_enable_layer(struct osd_state *sd, enum osd_layer layer)
413 {
414 switch (layer) {
415 case WIN_OSD0:
416 osd_set(sd, OSD_OSDWIN0MD_OACT0, OSD_OSDWIN0MD);
417 break;
418 case WIN_VID0:
419 osd_set(sd, OSD_VIDWINMD_ACT0, OSD_VIDWINMD);
420 break;
421 case WIN_OSD1:
422 /* enable OSD1 and disable attribute mode */
423 osd_modify(sd, OSD_OSDWIN1MD_OASW | OSD_OSDWIN1MD_OACT1,
424 OSD_OSDWIN1MD_OACT1, OSD_OSDWIN1MD);
425 break;
426 case WIN_VID1:
427 osd_set(sd, OSD_VIDWINMD_ACT1, OSD_VIDWINMD);
428 break;
429 }
430 }
431
432 static int osd_enable_layer(struct osd_state *sd, enum osd_layer layer,
433 int otherwin)
434 {
435 struct osd_state *osd = sd;
436 struct osd_window_state *win = &osd->win[layer];
437 struct osd_layer_config *cfg = &win->lconfig;
438 unsigned long flags;
439
440 spin_lock_irqsave(&osd->lock, flags);
441
442 /*
443 * use otherwin flag to know this is the other vid window
444 * in YUV420 mode, if is, skip this check
445 */
446 if (!otherwin && (!win->is_allocated ||
447 !win->fb_base_phys ||
448 !cfg->line_length ||
449 !cfg->xsize ||
450 !cfg->ysize)) {
451 spin_unlock_irqrestore(&osd->lock, flags);
452 return -1;
453 }
454
455 if (win->is_enabled) {
456 spin_unlock_irqrestore(&osd->lock, flags);
457 return 0;
458 }
459 win->is_enabled = 1;
460
461 if (cfg->pixfmt != PIXFMT_OSD_ATTR)
462 _osd_enable_layer(sd, layer);
463 else {
464 _osd_enable_attribute_mode(sd);
465 _osd_set_blink_attribute(sd, osd->is_blinking, osd->blink);
466 }
467
468 spin_unlock_irqrestore(&osd->lock, flags);
469
470 return 0;
471 }
472
473 static void _osd_start_layer(struct osd_state *sd, enum osd_layer layer,
474 unsigned long fb_base_phys,
475 unsigned long cbcr_ofst)
476 {
477 switch (layer) {
478 case WIN_OSD0:
479 osd_write(sd, fb_base_phys & ~0x1F, OSD_OSDWIN0ADR);
480 break;
481 case WIN_VID0:
482 osd_write(sd, fb_base_phys & ~0x1F, OSD_VIDWIN0ADR);
483 break;
484 case WIN_OSD1:
485 osd_write(sd, fb_base_phys & ~0x1F, OSD_OSDWIN1ADR);
486 break;
487 case WIN_VID1:
488 osd_write(sd, fb_base_phys & ~0x1F, OSD_VIDWIN1ADR);
489 break;
490 }
491 }
492
493 static void osd_start_layer(struct osd_state *sd, enum osd_layer layer,
494 unsigned long fb_base_phys,
495 unsigned long cbcr_ofst)
496 {
497 struct osd_state *osd = sd;
498 struct osd_window_state *win = &osd->win[layer];
499 struct osd_layer_config *cfg = &win->lconfig;
500 unsigned long flags;
501
502 spin_lock_irqsave(&osd->lock, flags);
503
504 win->fb_base_phys = fb_base_phys & ~0x1F;
505 _osd_start_layer(sd, layer, fb_base_phys, cbcr_ofst);
506
507 if (layer == WIN_VID0) {
508 osd->pingpong =
509 _osd_dm6446_vid0_pingpong(sd, osd->field_inversion,
510 win->fb_base_phys,
511 cfg);
512 }
513
514 spin_unlock_irqrestore(&osd->lock, flags);
515 }
516
517 static void osd_get_layer_config(struct osd_state *sd, enum osd_layer layer,
518 struct osd_layer_config *lconfig)
519 {
520 struct osd_state *osd = sd;
521 struct osd_window_state *win = &osd->win[layer];
522 unsigned long flags;
523
524 spin_lock_irqsave(&osd->lock, flags);
525
526 *lconfig = win->lconfig;
527
528 spin_unlock_irqrestore(&osd->lock, flags);
529 }
530
531 /**
532 * try_layer_config() - Try a specific configuration for the layer
533 * @sd - ptr to struct osd_state
534 * @layer - layer to configure
535 * @lconfig - layer configuration to try
536 *
537 * If the requested lconfig is completely rejected and the value of lconfig on
538 * exit is the current lconfig, then try_layer_config() returns 1. Otherwise,
539 * try_layer_config() returns 0. A return value of 0 does not necessarily mean
540 * that the value of lconfig on exit is identical to the value of lconfig on
541 * entry, but merely that it represents a change from the current lconfig.
542 */
543 static int try_layer_config(struct osd_state *sd, enum osd_layer layer,
544 struct osd_layer_config *lconfig)
545 {
546 struct osd_state *osd = sd;
547 struct osd_window_state *win = &osd->win[layer];
548 int bad_config;
549
550 /* verify that the pixel format is compatible with the layer */
551 switch (lconfig->pixfmt) {
552 case PIXFMT_1BPP:
553 case PIXFMT_2BPP:
554 case PIXFMT_4BPP:
555 case PIXFMT_8BPP:
556 case PIXFMT_RGB565:
557 bad_config = !is_osd_win(layer);
558 break;
559 case PIXFMT_YCbCrI:
560 case PIXFMT_YCrCbI:
561 bad_config = !is_vid_win(layer);
562 break;
563 case PIXFMT_RGB888:
564 bad_config = !is_vid_win(layer);
565 break;
566 case PIXFMT_NV12:
567 bad_config = 1;
568 break;
569 case PIXFMT_OSD_ATTR:
570 bad_config = (layer != WIN_OSD1);
571 break;
572 default:
573 bad_config = 1;
574 break;
575 }
576 if (bad_config) {
577 /*
578 * The requested pixel format is incompatible with the layer,
579 * so keep the current layer configuration.
580 */
581 *lconfig = win->lconfig;
582 return bad_config;
583 }
584
585 /* DM6446: */
586 /* only one OSD window at a time can use RGB pixel formats */
587 if (is_osd_win(layer) && is_rgb_pixfmt(lconfig->pixfmt)) {
588 enum osd_pix_format pixfmt;
589 if (layer == WIN_OSD0)
590 pixfmt = osd->win[WIN_OSD1].lconfig.pixfmt;
591 else
592 pixfmt = osd->win[WIN_OSD0].lconfig.pixfmt;
593
594 if (is_rgb_pixfmt(pixfmt)) {
595 /*
596 * The other OSD window is already configured for an
597 * RGB, so keep the current layer configuration.
598 */
599 *lconfig = win->lconfig;
600 return 1;
601 }
602 }
603
604 /* DM6446: only one video window at a time can use RGB888 */
605 if (is_vid_win(layer) && lconfig->pixfmt == PIXFMT_RGB888) {
606 enum osd_pix_format pixfmt;
607
608 if (layer == WIN_VID0)
609 pixfmt = osd->win[WIN_VID1].lconfig.pixfmt;
610 else
611 pixfmt = osd->win[WIN_VID0].lconfig.pixfmt;
612
613 if (pixfmt == PIXFMT_RGB888) {
614 /*
615 * The other video window is already configured for
616 * RGB888, so keep the current layer configuration.
617 */
618 *lconfig = win->lconfig;
619 return 1;
620 }
621 }
622
623 /* window dimensions must be non-zero */
624 if (!lconfig->line_length || !lconfig->xsize || !lconfig->ysize) {
625 *lconfig = win->lconfig;
626 return 1;
627 }
628
629 /* round line_length up to a multiple of 32 */
630 lconfig->line_length = ((lconfig->line_length + 31) / 32) * 32;
631 lconfig->line_length =
632 min(lconfig->line_length, (unsigned)MAX_LINE_LENGTH);
633 lconfig->xsize = min(lconfig->xsize, (unsigned)MAX_WIN_SIZE);
634 lconfig->ysize = min(lconfig->ysize, (unsigned)MAX_WIN_SIZE);
635 lconfig->xpos = min(lconfig->xpos, (unsigned)MAX_WIN_SIZE);
636 lconfig->ypos = min(lconfig->ypos, (unsigned)MAX_WIN_SIZE);
637 lconfig->interlaced = (lconfig->interlaced != 0);
638 if (lconfig->interlaced) {
639 /* ysize and ypos must be even for interlaced displays */
640 lconfig->ysize &= ~1;
641 lconfig->ypos &= ~1;
642 }
643
644 return 0;
645 }
646
647 static void _osd_disable_vid_rgb888(struct osd_state *sd)
648 {
649 /*
650 * The DM6446 supports RGB888 pixel format in a single video window.
651 * This routine disables RGB888 pixel format for both video windows.
652 * The caller must ensure that neither video window is currently
653 * configured for RGB888 pixel format.
654 */
655 osd_clear(sd, OSD_MISCCTL_RGBEN, OSD_MISCCTL);
656 }
657
658 static void _osd_enable_vid_rgb888(struct osd_state *sd,
659 enum osd_layer layer)
660 {
661 /*
662 * The DM6446 supports RGB888 pixel format in a single video window.
663 * This routine enables RGB888 pixel format for the specified video
664 * window. The caller must ensure that the other video window is not
665 * currently configured for RGB888 pixel format, as this routine will
666 * disable RGB888 pixel format for the other window.
667 */
668 if (layer == WIN_VID0) {
669 osd_modify(sd, OSD_MISCCTL_RGBEN | OSD_MISCCTL_RGBWIN,
670 OSD_MISCCTL_RGBEN, OSD_MISCCTL);
671 } else if (layer == WIN_VID1) {
672 osd_modify(sd, OSD_MISCCTL_RGBEN | OSD_MISCCTL_RGBWIN,
673 OSD_MISCCTL_RGBEN | OSD_MISCCTL_RGBWIN,
674 OSD_MISCCTL);
675 }
676 }
677
678 static void _osd_set_cbcr_order(struct osd_state *sd,
679 enum osd_pix_format pixfmt)
680 {
681 /*
682 * The caller must ensure that all windows using YC pixfmt use the same
683 * Cb/Cr order.
684 */
685 if (pixfmt == PIXFMT_YCbCrI)
686 osd_clear(sd, OSD_MODE_CS, OSD_MODE);
687 else if (pixfmt == PIXFMT_YCrCbI)
688 osd_set(sd, OSD_MODE_CS, OSD_MODE);
689 }
690
691 static void _osd_set_layer_config(struct osd_state *sd, enum osd_layer layer,
692 const struct osd_layer_config *lconfig)
693 {
694 u32 winmd = 0, winmd_mask = 0, bmw = 0;
695
696 _osd_set_cbcr_order(sd, lconfig->pixfmt);
697
698 switch (layer) {
699 case WIN_OSD0:
700 winmd_mask |= OSD_OSDWIN0MD_RGB0E;
701 if (lconfig->pixfmt == PIXFMT_RGB565)
702 winmd |= OSD_OSDWIN0MD_RGB0E;
703
704 winmd_mask |= OSD_OSDWIN0MD_BMW0 | OSD_OSDWIN0MD_OFF0;
705
706 switch (lconfig->pixfmt) {
707 case PIXFMT_1BPP:
708 bmw = 0;
709 break;
710 case PIXFMT_2BPP:
711 bmw = 1;
712 break;
713 case PIXFMT_4BPP:
714 bmw = 2;
715 break;
716 case PIXFMT_8BPP:
717 bmw = 3;
718 break;
719 default:
720 break;
721 }
722 winmd |= (bmw << OSD_OSDWIN0MD_BMW0_SHIFT);
723
724 if (lconfig->interlaced)
725 winmd |= OSD_OSDWIN0MD_OFF0;
726
727 osd_modify(sd, winmd_mask, winmd, OSD_OSDWIN0MD);
728 osd_write(sd, lconfig->line_length >> 5, OSD_OSDWIN0OFST);
729 osd_write(sd, lconfig->xpos, OSD_OSDWIN0XP);
730 osd_write(sd, lconfig->xsize, OSD_OSDWIN0XL);
731 if (lconfig->interlaced) {
732 osd_write(sd, lconfig->ypos >> 1, OSD_OSDWIN0YP);
733 osd_write(sd, lconfig->ysize >> 1, OSD_OSDWIN0YL);
734 } else {
735 osd_write(sd, lconfig->ypos, OSD_OSDWIN0YP);
736 osd_write(sd, lconfig->ysize, OSD_OSDWIN0YL);
737 }
738 break;
739 case WIN_VID0:
740 winmd_mask |= OSD_VIDWINMD_VFF0;
741 if (lconfig->interlaced)
742 winmd |= OSD_VIDWINMD_VFF0;
743
744 osd_modify(sd, winmd_mask, winmd, OSD_VIDWINMD);
745 osd_write(sd, lconfig->line_length >> 5, OSD_VIDWIN0OFST);
746 osd_write(sd, lconfig->xpos, OSD_VIDWIN0XP);
747 osd_write(sd, lconfig->xsize, OSD_VIDWIN0XL);
748 /*
749 * For YUV420P format the register contents are
750 * duplicated in both VID registers
751 */
752 if (lconfig->interlaced) {
753 osd_write(sd, lconfig->ypos >> 1, OSD_VIDWIN0YP);
754 osd_write(sd, lconfig->ysize >> 1, OSD_VIDWIN0YL);
755 } else {
756 osd_write(sd, lconfig->ypos, OSD_VIDWIN0YP);
757 osd_write(sd, lconfig->ysize, OSD_VIDWIN0YL);
758 }
759 break;
760 case WIN_OSD1:
761 /*
762 * The caller must ensure that OSD1 is disabled prior to
763 * switching from a normal mode to attribute mode or from
764 * attribute mode to a normal mode.
765 */
766 if (lconfig->pixfmt == PIXFMT_OSD_ATTR) {
767 winmd_mask |=
768 OSD_OSDWIN1MD_ATN1E | OSD_OSDWIN1MD_RGB1E |
769 OSD_OSDWIN1MD_CLUTS1 |
770 OSD_OSDWIN1MD_BLND1 | OSD_OSDWIN1MD_TE1;
771 } else {
772 winmd_mask |= OSD_OSDWIN1MD_RGB1E;
773 if (lconfig->pixfmt == PIXFMT_RGB565)
774 winmd |= OSD_OSDWIN1MD_RGB1E;
775
776 winmd_mask |= OSD_OSDWIN1MD_BMW1;
777 switch (lconfig->pixfmt) {
778 case PIXFMT_1BPP:
779 bmw = 0;
780 break;
781 case PIXFMT_2BPP:
782 bmw = 1;
783 break;
784 case PIXFMT_4BPP:
785 bmw = 2;
786 break;
787 case PIXFMT_8BPP:
788 bmw = 3;
789 break;
790 default:
791 break;
792 }
793 winmd |= (bmw << OSD_OSDWIN1MD_BMW1_SHIFT);
794 }
795
796 winmd_mask |= OSD_OSDWIN1MD_OFF1;
797 if (lconfig->interlaced)
798 winmd |= OSD_OSDWIN1MD_OFF1;
799
800 osd_modify(sd, winmd_mask, winmd, OSD_OSDWIN1MD);
801 osd_write(sd, lconfig->line_length >> 5, OSD_OSDWIN1OFST);
802 osd_write(sd, lconfig->xpos, OSD_OSDWIN1XP);
803 osd_write(sd, lconfig->xsize, OSD_OSDWIN1XL);
804 if (lconfig->interlaced) {
805 osd_write(sd, lconfig->ypos >> 1, OSD_OSDWIN1YP);
806 osd_write(sd, lconfig->ysize >> 1, OSD_OSDWIN1YL);
807 } else {
808 osd_write(sd, lconfig->ypos, OSD_OSDWIN1YP);
809 osd_write(sd, lconfig->ysize, OSD_OSDWIN1YL);
810 }
811 break;
812 case WIN_VID1:
813 winmd_mask |= OSD_VIDWINMD_VFF1;
814 if (lconfig->interlaced)
815 winmd |= OSD_VIDWINMD_VFF1;
816
817 osd_modify(sd, winmd_mask, winmd, OSD_VIDWINMD);
818 osd_write(sd, lconfig->line_length >> 5, OSD_VIDWIN1OFST);
819 osd_write(sd, lconfig->xpos, OSD_VIDWIN1XP);
820 osd_write(sd, lconfig->xsize, OSD_VIDWIN1XL);
821 /*
822 * For YUV420P format the register contents are
823 * duplicated in both VID registers
824 */
825 osd_modify(sd, OSD_MISCCTL_S420D, ~OSD_MISCCTL_S420D,
826 OSD_MISCCTL);
827
828 if (lconfig->interlaced) {
829 osd_write(sd, lconfig->ypos >> 1, OSD_VIDWIN1YP);
830 osd_write(sd, lconfig->ysize >> 1, OSD_VIDWIN1YL);
831 } else {
832 osd_write(sd, lconfig->ypos, OSD_VIDWIN1YP);
833 osd_write(sd, lconfig->ysize, OSD_VIDWIN1YL);
834 }
835 break;
836 }
837 }
838
839 static int osd_set_layer_config(struct osd_state *sd, enum osd_layer layer,
840 struct osd_layer_config *lconfig)
841 {
842 struct osd_state *osd = sd;
843 struct osd_window_state *win = &osd->win[layer];
844 struct osd_layer_config *cfg = &win->lconfig;
845 unsigned long flags;
846 int reject_config;
847
848 spin_lock_irqsave(&osd->lock, flags);
849
850 reject_config = try_layer_config(sd, layer, lconfig);
851 if (reject_config) {
852 spin_unlock_irqrestore(&osd->lock, flags);
853 return reject_config;
854 }
855
856 /* update the current Cb/Cr order */
857 if (is_yc_pixfmt(lconfig->pixfmt))
858 osd->yc_pixfmt = lconfig->pixfmt;
859
860 /*
861 * If we are switching OSD1 from normal mode to attribute mode or from
862 * attribute mode to normal mode, then we must disable the window.
863 */
864 if (layer == WIN_OSD1) {
865 if (((lconfig->pixfmt == PIXFMT_OSD_ATTR) &&
866 (cfg->pixfmt != PIXFMT_OSD_ATTR)) ||
867 ((lconfig->pixfmt != PIXFMT_OSD_ATTR) &&
868 (cfg->pixfmt == PIXFMT_OSD_ATTR))) {
869 win->is_enabled = 0;
870 _osd_disable_layer(sd, layer);
871 }
872 }
873
874 _osd_set_layer_config(sd, layer, lconfig);
875
876 if (layer == WIN_OSD1) {
877 struct osd_osdwin_state *osdwin_state =
878 &osd->osdwin[OSDWIN_OSD1];
879
880 if ((lconfig->pixfmt != PIXFMT_OSD_ATTR) &&
881 (cfg->pixfmt == PIXFMT_OSD_ATTR)) {
882 /*
883 * We just switched OSD1 from attribute mode to normal
884 * mode, so we must initialize the CLUT select, the
885 * blend factor, transparency colorkey enable, and
886 * attenuation enable (DM6446 only) bits in the
887 * OSDWIN1MD register.
888 */
889 _osd_set_osd_clut(sd, OSDWIN_OSD1,
890 osdwin_state->clut);
891 _osd_set_blending_factor(sd, OSDWIN_OSD1,
892 osdwin_state->blend);
893 if (osdwin_state->colorkey_blending) {
894 _osd_enable_color_key(sd, OSDWIN_OSD1,
895 osdwin_state->
896 colorkey,
897 lconfig->pixfmt);
898 } else
899 _osd_disable_color_key(sd, OSDWIN_OSD1);
900 _osd_set_rec601_attenuation(sd, OSDWIN_OSD1,
901 osdwin_state->
902 rec601_attenuation);
903 } else if ((lconfig->pixfmt == PIXFMT_OSD_ATTR) &&
904 (cfg->pixfmt != PIXFMT_OSD_ATTR)) {
905 /*
906 * We just switched OSD1 from normal mode to attribute
907 * mode, so we must initialize the blink enable and
908 * blink interval bits in the OSDATRMD register.
909 */
910 _osd_set_blink_attribute(sd, osd->is_blinking,
911 osd->blink);
912 }
913 }
914
915 /*
916 * If we just switched to a 1-, 2-, or 4-bits-per-pixel bitmap format
917 * then configure a default palette map.
918 */
919 if ((lconfig->pixfmt != cfg->pixfmt) &&
920 ((lconfig->pixfmt == PIXFMT_1BPP) ||
921 (lconfig->pixfmt == PIXFMT_2BPP) ||
922 (lconfig->pixfmt == PIXFMT_4BPP))) {
923 enum osd_win_layer osdwin =
924 ((layer == WIN_OSD0) ? OSDWIN_OSD0 : OSDWIN_OSD1);
925 struct osd_osdwin_state *osdwin_state =
926 &osd->osdwin[osdwin];
927 unsigned char clut_index;
928 unsigned char clut_entries = 0;
929
930 switch (lconfig->pixfmt) {
931 case PIXFMT_1BPP:
932 clut_entries = 2;
933 break;
934 case PIXFMT_2BPP:
935 clut_entries = 4;
936 break;
937 case PIXFMT_4BPP:
938 clut_entries = 16;
939 break;
940 default:
941 break;
942 }
943 /*
944 * The default palette map maps the pixel value to the clut
945 * index, i.e. pixel value 0 maps to clut entry 0, pixel value
946 * 1 maps to clut entry 1, etc.
947 */
948 for (clut_index = 0; clut_index < 16; clut_index++) {
949 osdwin_state->palette_map[clut_index] = clut_index;
950 if (clut_index < clut_entries) {
951 _osd_set_palette_map(sd, osdwin, clut_index,
952 clut_index,
953 lconfig->pixfmt);
954 }
955 }
956 }
957
958 *cfg = *lconfig;
959 /* DM6446: configure the RGB888 enable and window selection */
960 if (osd->win[WIN_VID0].lconfig.pixfmt == PIXFMT_RGB888)
961 _osd_enable_vid_rgb888(sd, WIN_VID0);
962 else if (osd->win[WIN_VID1].lconfig.pixfmt == PIXFMT_RGB888)
963 _osd_enable_vid_rgb888(sd, WIN_VID1);
964 else
965 _osd_disable_vid_rgb888(sd);
966
967 if (layer == WIN_VID0) {
968 osd->pingpong =
969 _osd_dm6446_vid0_pingpong(sd, osd->field_inversion,
970 win->fb_base_phys,
971 cfg);
972 }
973
974 spin_unlock_irqrestore(&osd->lock, flags);
975
976 return 0;
977 }
978
979 static void osd_init_layer(struct osd_state *sd, enum osd_layer layer)
980 {
981 struct osd_state *osd = sd;
982 struct osd_window_state *win = &osd->win[layer];
983 enum osd_win_layer osdwin;
984 struct osd_osdwin_state *osdwin_state;
985 struct osd_layer_config *cfg = &win->lconfig;
986 unsigned long flags;
987
988 spin_lock_irqsave(&osd->lock, flags);
989
990 win->is_enabled = 0;
991 _osd_disable_layer(sd, layer);
992
993 win->h_zoom = ZOOM_X1;
994 win->v_zoom = ZOOM_X1;
995 _osd_set_zoom(sd, layer, win->h_zoom, win->v_zoom);
996
997 win->fb_base_phys = 0;
998 _osd_start_layer(sd, layer, win->fb_base_phys, 0);
999
1000 cfg->line_length = 0;
1001 cfg->xsize = 0;
1002 cfg->ysize = 0;
1003 cfg->xpos = 0;
1004 cfg->ypos = 0;
1005 cfg->interlaced = 0;
1006 switch (layer) {
1007 case WIN_OSD0:
1008 case WIN_OSD1:
1009 osdwin = (layer == WIN_OSD0) ? OSDWIN_OSD0 : OSDWIN_OSD1;
1010 osdwin_state = &osd->osdwin[osdwin];
1011 /*
1012 * Other code relies on the fact that OSD windows default to a
1013 * bitmap pixel format when they are deallocated, so don't
1014 * change this default pixel format.
1015 */
1016 cfg->pixfmt = PIXFMT_8BPP;
1017 _osd_set_layer_config(sd, layer, cfg);
1018 osdwin_state->clut = RAM_CLUT;
1019 _osd_set_osd_clut(sd, osdwin, osdwin_state->clut);
1020 osdwin_state->colorkey_blending = 0;
1021 _osd_disable_color_key(sd, osdwin);
1022 osdwin_state->blend = OSD_8_VID_0;
1023 _osd_set_blending_factor(sd, osdwin, osdwin_state->blend);
1024 osdwin_state->rec601_attenuation = 0;
1025 _osd_set_rec601_attenuation(sd, osdwin,
1026 osdwin_state->
1027 rec601_attenuation);
1028 if (osdwin == OSDWIN_OSD1) {
1029 osd->is_blinking = 0;
1030 osd->blink = BLINK_X1;
1031 }
1032 break;
1033 case WIN_VID0:
1034 case WIN_VID1:
1035 cfg->pixfmt = osd->yc_pixfmt;
1036 _osd_set_layer_config(sd, layer, cfg);
1037 break;
1038 }
1039
1040 spin_unlock_irqrestore(&osd->lock, flags);
1041 }
1042
1043 static void osd_release_layer(struct osd_state *sd, enum osd_layer layer)
1044 {
1045 struct osd_state *osd = sd;
1046 struct osd_window_state *win = &osd->win[layer];
1047 unsigned long flags;
1048
1049 spin_lock_irqsave(&osd->lock, flags);
1050
1051 if (!win->is_allocated) {
1052 spin_unlock_irqrestore(&osd->lock, flags);
1053 return;
1054 }
1055
1056 spin_unlock_irqrestore(&osd->lock, flags);
1057 osd_init_layer(sd, layer);
1058 spin_lock_irqsave(&osd->lock, flags);
1059
1060 win->is_allocated = 0;
1061
1062 spin_unlock_irqrestore(&osd->lock, flags);
1063 }
1064
1065 static int osd_request_layer(struct osd_state *sd, enum osd_layer layer)
1066 {
1067 struct osd_state *osd = sd;
1068 struct osd_window_state *win = &osd->win[layer];
1069 unsigned long flags;
1070
1071 spin_lock_irqsave(&osd->lock, flags);
1072
1073 if (win->is_allocated) {
1074 spin_unlock_irqrestore(&osd->lock, flags);
1075 return -1;
1076 }
1077 win->is_allocated = 1;
1078
1079 spin_unlock_irqrestore(&osd->lock, flags);
1080
1081 return 0;
1082 }
1083
1084 static void _osd_init(struct osd_state *sd)
1085 {
1086 osd_write(sd, 0, OSD_MODE);
1087 osd_write(sd, 0, OSD_VIDWINMD);
1088 osd_write(sd, 0, OSD_OSDWIN0MD);
1089 osd_write(sd, 0, OSD_OSDWIN1MD);
1090 osd_write(sd, 0, OSD_RECTCUR);
1091 osd_write(sd, 0, OSD_MISCCTL);
1092 }
1093
1094 static void osd_set_left_margin(struct osd_state *sd, u32 val)
1095 {
1096 osd_write(sd, val, OSD_BASEPX);
1097 }
1098
1099 static void osd_set_top_margin(struct osd_state *sd, u32 val)
1100 {
1101 osd_write(sd, val, OSD_BASEPY);
1102 }
1103
1104 static int osd_initialize(struct osd_state *osd)
1105 {
1106 if (osd == NULL)
1107 return -ENODEV;
1108 _osd_init(osd);
1109
1110 /* set default Cb/Cr order */
1111 osd->yc_pixfmt = PIXFMT_YCbCrI;
1112
1113 _osd_set_field_inversion(osd, osd->field_inversion);
1114 _osd_set_rom_clut(osd, osd->rom_clut);
1115
1116 osd_init_layer(osd, WIN_OSD0);
1117 osd_init_layer(osd, WIN_VID0);
1118 osd_init_layer(osd, WIN_OSD1);
1119 osd_init_layer(osd, WIN_VID1);
1120
1121 return 0;
1122 }
1123
1124 static const struct vpbe_osd_ops osd_ops = {
1125 .initialize = osd_initialize,
1126 .request_layer = osd_request_layer,
1127 .release_layer = osd_release_layer,
1128 .enable_layer = osd_enable_layer,
1129 .disable_layer = osd_disable_layer,
1130 .set_layer_config = osd_set_layer_config,
1131 .get_layer_config = osd_get_layer_config,
1132 .start_layer = osd_start_layer,
1133 .set_left_margin = osd_set_left_margin,
1134 .set_top_margin = osd_set_top_margin,
1135 };
1136
1137 static int osd_probe(struct platform_device *pdev)
1138 {
1139 struct osd_platform_data *pdata;
1140 struct osd_state *osd;
1141 struct resource *res;
1142 int ret = 0;
1143
1144 osd = kzalloc(sizeof(struct osd_state), GFP_KERNEL);
1145 if (osd == NULL)
1146 return -ENOMEM;
1147
1148 osd->dev = &pdev->dev;
1149 pdata = (struct osd_platform_data *)pdev->dev.platform_data;
1150 osd->vpbe_type = (enum vpbe_version)pdata->vpbe_type;
1151 if (NULL == pdev->dev.platform_data) {
1152 dev_err(osd->dev, "No platform data defined for OSD"
1153 " sub device\n");
1154 ret = -ENOENT;
1155 goto free_mem;
1156 }
1157
1158 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1159 if (!res) {
1160 dev_err(osd->dev, "Unable to get OSD register address map\n");
1161 ret = -ENODEV;
1162 goto free_mem;
1163 }
1164 osd->osd_base_phys = res->start;
1165 osd->osd_size = res->end - res->start + 1;
1166 if (!request_mem_region(osd->osd_base_phys, osd->osd_size,
1167 MODULE_NAME)) {
1168 dev_err(osd->dev, "Unable to reserve OSD MMIO region\n");
1169 ret = -ENODEV;
1170 goto free_mem;
1171 }
1172 osd->osd_base = (unsigned long)ioremap_nocache(res->start,
1173 osd->osd_size);
1174 if (!osd->osd_base) {
1175 dev_err(osd->dev, "Unable to map the OSD region\n");
1176 ret = -ENODEV;
1177 goto release_mem_region;
1178 }
1179 spin_lock_init(&osd->lock);
1180 osd->ops = osd_ops;
1181 platform_set_drvdata(pdev, osd);
1182 dev_notice(osd->dev, "OSD sub device probe success\n");
1183 return ret;
1184
1185 release_mem_region:
1186 release_mem_region(osd->osd_base_phys, osd->osd_size);
1187 free_mem:
1188 kfree(osd);
1189 return ret;
1190 }
1191
1192 static int osd_remove(struct platform_device *pdev)
1193 {
1194 struct osd_state *osd = platform_get_drvdata(pdev);
1195
1196 iounmap((void *)osd->osd_base);
1197 release_mem_region(osd->osd_base_phys, osd->osd_size);
1198 kfree(osd);
1199 return 0;
1200 }
1201
1202 static struct platform_driver osd_driver = {
1203 .probe = osd_probe,
1204 .remove = osd_remove,
1205 .driver = {
1206 .name = MODULE_NAME,
1207 .owner = THIS_MODULE,
1208 },
1209 };
1210
1211 static int osd_init(void)
1212 {
1213 if (platform_driver_register(&osd_driver)) {
1214 printk(KERN_ERR "Unable to register davinci osd driver\n");
1215 return -ENODEV;
1216 }
1217
1218 return 0;
1219 }
1220
1221 static void osd_exit(void)
1222 {
1223 platform_driver_unregister(&osd_driver);
1224 }
1225
1226 module_init(osd_init);
1227 module_exit(osd_exit);
1228
1229 MODULE_LICENSE("GPL");
1230 MODULE_DESCRIPTION("DaVinci OSD Manager Driver");
1231 MODULE_AUTHOR("Texas Instruments");
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