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thp: add debug checks for mapcount related invariants
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / video / msm / mdp_ppp.c
blob4ff001f4cbbdd9f33a98803bf70755f562c2c1a7
1 /* drivers/video/msm/mdp_ppp.c
2 *
3 * Copyright (C) 2007 QUALCOMM Incorporated
4 * Copyright (C) 2007 Google Incorporated
5 *
6 * This software is licensed under the terms of the GNU General Public
7 * License version 2, as published by the Free Software Foundation, and
8 * may be copied, distributed, and modified under those terms.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15 #include <linux/fb.h>
16 #include <linux/file.h>
17 #include <linux/delay.h>
18 #include <linux/msm_mdp.h>
19 #include <mach/msm_fb.h>
20
21 #include "mdp_hw.h"
22 #include "mdp_scale_tables.h"
23
24 #define DLOG(x...) do {} while (0)
25
26 #define MDP_DOWNSCALE_BLUR (MDP_DOWNSCALE_MAX + 1)
27 static int downscale_y_table = MDP_DOWNSCALE_MAX;
28 static int downscale_x_table = MDP_DOWNSCALE_MAX;
29
30 struct mdp_regs {
31 uint32_t src0;
32 uint32_t src1;
33 uint32_t dst0;
34 uint32_t dst1;
35 uint32_t src_cfg;
36 uint32_t dst_cfg;
37 uint32_t src_pack;
38 uint32_t dst_pack;
39 uint32_t src_rect;
40 uint32_t dst_rect;
41 uint32_t src_ystride;
42 uint32_t dst_ystride;
43 uint32_t op;
44 uint32_t src_bpp;
45 uint32_t dst_bpp;
46 uint32_t edge;
47 uint32_t phasex_init;
48 uint32_t phasey_init;
49 uint32_t phasex_step;
50 uint32_t phasey_step;
51 };
52
53 static uint32_t pack_pattern[] = {
54 PPP_ARRAY0(PACK_PATTERN)
55 };
56
57 static uint32_t src_img_cfg[] = {
58 PPP_ARRAY1(CFG, SRC)
59 };
60
61 static uint32_t dst_img_cfg[] = {
62 PPP_ARRAY1(CFG, DST)
63 };
64
65 static uint32_t bytes_per_pixel[] = {
66 [MDP_RGB_565] = 2,
67 [MDP_RGB_888] = 3,
68 [MDP_XRGB_8888] = 4,
69 [MDP_ARGB_8888] = 4,
70 [MDP_RGBA_8888] = 4,
71 [MDP_BGRA_8888] = 4,
72 [MDP_Y_CBCR_H2V1] = 1,
73 [MDP_Y_CBCR_H2V2] = 1,
74 [MDP_Y_CRCB_H2V1] = 1,
75 [MDP_Y_CRCB_H2V2] = 1,
76 [MDP_YCRYCB_H2V1] = 2
77 };
78
79 static uint32_t dst_op_chroma[] = {
80 PPP_ARRAY1(CHROMA_SAMP, DST)
81 };
82
83 static uint32_t src_op_chroma[] = {
84 PPP_ARRAY1(CHROMA_SAMP, SRC)
85 };
86
87 static uint32_t bg_op_chroma[] = {
88 PPP_ARRAY1(CHROMA_SAMP, BG)
89 };
90
91 static void rotate_dst_addr_x(struct mdp_blit_req *req, struct mdp_regs *regs)
92 {
93 regs->dst0 += (req->dst_rect.w -
94 min((uint32_t)16, req->dst_rect.w)) * regs->dst_bpp;
95 regs->dst1 += (req->dst_rect.w -
96 min((uint32_t)16, req->dst_rect.w)) * regs->dst_bpp;
97 }
98
99 static void rotate_dst_addr_y(struct mdp_blit_req *req, struct mdp_regs *regs)
100 {
101 regs->dst0 += (req->dst_rect.h -
102 min((uint32_t)16, req->dst_rect.h)) *
103 regs->dst_ystride;
104 regs->dst1 += (req->dst_rect.h -
105 min((uint32_t)16, req->dst_rect.h)) *
106 regs->dst_ystride;
107 }
108
109 static void blit_rotate(struct mdp_blit_req *req,
110 struct mdp_regs *regs)
111 {
112 if (req->flags == MDP_ROT_NOP)
113 return;
114
115 regs->op |= PPP_OP_ROT_ON;
116 if ((req->flags & MDP_ROT_90 || req->flags & MDP_FLIP_LR) &&
117 !(req->flags & MDP_ROT_90 && req->flags & MDP_FLIP_LR))
118 rotate_dst_addr_x(req, regs);
119 if (req->flags & MDP_ROT_90)
120 regs->op |= PPP_OP_ROT_90;
121 if (req->flags & MDP_FLIP_UD) {
122 regs->op |= PPP_OP_FLIP_UD;
123 rotate_dst_addr_y(req, regs);
124 }
125 if (req->flags & MDP_FLIP_LR)
126 regs->op |= PPP_OP_FLIP_LR;
127 }
128
129 static void blit_convert(struct mdp_blit_req *req, struct mdp_regs *regs)
130 {
131 if (req->src.format == req->dst.format)
132 return;
133 if (IS_RGB(req->src.format) && IS_YCRCB(req->dst.format)) {
134 regs->op |= PPP_OP_CONVERT_RGB2YCBCR | PPP_OP_CONVERT_ON;
135 } else if (IS_YCRCB(req->src.format) && IS_RGB(req->dst.format)) {
136 regs->op |= PPP_OP_CONVERT_YCBCR2RGB | PPP_OP_CONVERT_ON;
137 if (req->dst.format == MDP_RGB_565)
138 regs->op |= PPP_OP_CONVERT_MATRIX_SECONDARY;
139 }
140 }
141
142 #define GET_BIT_RANGE(value, high, low) \
143 (((1 << (high - low + 1)) - 1) & (value >> low))
144 static uint32_t transp_convert(struct mdp_blit_req *req)
145 {
146 uint32_t transp = 0;
147 if (req->src.format == MDP_RGB_565) {
148 /* pad each value to 8 bits by copying the high bits into the
149 * low end, convert RGB to RBG by switching low 2 components */
150 transp |= ((GET_BIT_RANGE(req->transp_mask, 15, 11) << 3) |
151 (GET_BIT_RANGE(req->transp_mask, 15, 13))) << 16;
152
153 transp |= ((GET_BIT_RANGE(req->transp_mask, 4, 0) << 3) |
154 (GET_BIT_RANGE(req->transp_mask, 4, 2))) << 8;
155
156 transp |= (GET_BIT_RANGE(req->transp_mask, 10, 5) << 2) |
157 (GET_BIT_RANGE(req->transp_mask, 10, 9));
158 } else {
159 /* convert RGB to RBG */
160 transp |= (GET_BIT_RANGE(req->transp_mask, 15, 8)) |
161 (GET_BIT_RANGE(req->transp_mask, 23, 16) << 16) |
162 (GET_BIT_RANGE(req->transp_mask, 7, 0) << 8);
163 }
164 return transp;
165 }
166 #undef GET_BIT_RANGE
167
168 static void blit_blend(struct mdp_blit_req *req, struct mdp_regs *regs)
169 {
170 /* TRANSP BLEND */
171 if (req->transp_mask != MDP_TRANSP_NOP) {
172 req->transp_mask = transp_convert(req);
173 if (req->alpha != MDP_ALPHA_NOP) {
174 /* use blended transparancy mode
175 * pixel = (src == transp) ? dst : blend
176 * blend is combo of blend_eq_sel and
177 * blend_alpha_sel */
178 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
179 PPP_OP_BLEND_ALPHA_BLEND_NORMAL |
180 PPP_OP_BLEND_CONSTANT_ALPHA |
181 PPP_BLEND_ALPHA_TRANSP;
182 } else {
183 /* simple transparancy mode
184 * pixel = (src == transp) ? dst : src */
185 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
186 PPP_OP_BLEND_SRCPIXEL_TRANSP;
187 }
188 }
189
190 req->alpha &= 0xff;
191 /* ALPHA BLEND */
192 if (HAS_ALPHA(req->src.format)) {
193 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
194 PPP_OP_BLEND_SRCPIXEL_ALPHA;
195 } else if (req->alpha < MDP_ALPHA_NOP) {
196 /* just blend by alpha */
197 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
198 PPP_OP_BLEND_ALPHA_BLEND_NORMAL |
199 PPP_OP_BLEND_CONSTANT_ALPHA;
200 }
201
202 regs->op |= bg_op_chroma[req->dst.format];
203 }
204
205 #define ONE_HALF (1LL << 32)
206 #define ONE (1LL << 33)
207 #define TWO (2LL << 33)
208 #define THREE (3LL << 33)
209 #define FRAC_MASK (ONE - 1)
210 #define INT_MASK (~FRAC_MASK)
211
212 static int scale_params(uint32_t dim_in, uint32_t dim_out, uint32_t origin,
213 uint32_t *phase_init, uint32_t *phase_step)
214 {
215 /* to improve precicsion calculations are done in U31.33 and converted
216 * to U3.29 at the end */
217 int64_t k1, k2, k3, k4, tmp;
218 uint64_t n, d, os, os_p, od, od_p, oreq;
219 unsigned rpa = 0;
220 int64_t ip64, delta;
221
222 if (dim_out % 3 == 0)
223 rpa = !(dim_in % (dim_out / 3));
224
225 n = ((uint64_t)dim_out) << 34;
226 d = dim_in;
227 if (!d)
228 return -1;
229 do_div(n, d);
230 k3 = (n + 1) >> 1;
231 if ((k3 >> 4) < (1LL << 27) || (k3 >> 4) > (1LL << 31)) {
232 DLOG("crap bad scale\n");
233 return -1;
234 }
235 n = ((uint64_t)dim_in) << 34;
236 d = (uint64_t)dim_out;
237 if (!d)
238 return -1;
239 do_div(n, d);
240 k1 = (n + 1) >> 1;
241 k2 = (k1 - ONE) >> 1;
242
243 *phase_init = (int)(k2 >> 4);
244 k4 = (k3 - ONE) >> 1;
245
246 if (rpa) {
247 os = ((uint64_t)origin << 33) - ONE_HALF;
248 tmp = (dim_out * os) + ONE_HALF;
249 if (!dim_in)
250 return -1;
251 do_div(tmp, dim_in);
252 od = tmp - ONE_HALF;
253 } else {
254 os = ((uint64_t)origin << 1) - 1;
255 od = (((k3 * os) >> 1) + k4);
256 }
257
258 od_p = od & INT_MASK;
259 if (od_p != od)
260 od_p += ONE;
261
262 if (rpa) {
263 tmp = (dim_in * od_p) + ONE_HALF;
264 if (!dim_in)
265 return -1;
266 do_div(tmp, dim_in);
267 os_p = tmp - ONE_HALF;
268 } else {
269 os_p = ((k1 * (od_p >> 33)) + k2);
270 }
271
272 oreq = (os_p & INT_MASK) - ONE;
273
274 ip64 = os_p - oreq;
275 delta = ((int64_t)(origin) << 33) - oreq;
276 ip64 -= delta;
277 /* limit to valid range before the left shift */
278 delta = (ip64 & (1LL << 63)) ? 4 : -4;
279 delta <<= 33;
280 while (abs((int)(ip64 >> 33)) > 4)
281 ip64 += delta;
282 *phase_init = (int)(ip64 >> 4);
283 *phase_step = (uint32_t)(k1 >> 4);
284 return 0;
285 }
286
287 static void load_scale_table(const struct mdp_info *mdp,
288 struct mdp_table_entry *table, int len)
289 {
290 int i;
291 for (i = 0; i < len; i++)
292 mdp_writel(mdp, table[i].val, table[i].reg);
293 }
294
295 enum {
296 IMG_LEFT,
297 IMG_RIGHT,
298 IMG_TOP,
299 IMG_BOTTOM,
300 };
301
302 static void get_edge_info(uint32_t src, uint32_t src_coord, uint32_t dst,
303 uint32_t *interp1, uint32_t *interp2,
304 uint32_t *repeat1, uint32_t *repeat2) {
305 if (src > 3 * dst) {
306 *interp1 = 0;
307 *interp2 = src - 1;
308 *repeat1 = 0;
309 *repeat2 = 0;
310 } else if (src == 3 * dst) {
311 *interp1 = 0;
312 *interp2 = src;
313 *repeat1 = 0;
314 *repeat2 = 1;
315 } else if (src > dst && src < 3 * dst) {
316 *interp1 = -1;
317 *interp2 = src;
318 *repeat1 = 1;
319 *repeat2 = 1;
320 } else if (src == dst) {
321 *interp1 = -1;
322 *interp2 = src + 1;
323 *repeat1 = 1;
324 *repeat2 = 2;
325 } else {
326 *interp1 = -2;
327 *interp2 = src + 1;
328 *repeat1 = 2;
329 *repeat2 = 2;
330 }
331 *interp1 += src_coord;
332 *interp2 += src_coord;
333 }
334
335 static int get_edge_cond(struct mdp_blit_req *req, struct mdp_regs *regs)
336 {
337 int32_t luma_interp[4];
338 int32_t luma_repeat[4];
339 int32_t chroma_interp[4];
340 int32_t chroma_bound[4];
341 int32_t chroma_repeat[4];
342 uint32_t dst_w, dst_h;
343
344 memset(&luma_interp, 0, sizeof(int32_t) * 4);
345 memset(&luma_repeat, 0, sizeof(int32_t) * 4);
346 memset(&chroma_interp, 0, sizeof(int32_t) * 4);
347 memset(&chroma_bound, 0, sizeof(int32_t) * 4);
348 memset(&chroma_repeat, 0, sizeof(int32_t) * 4);
349 regs->edge = 0;
350
351 if (req->flags & MDP_ROT_90) {
352 dst_w = req->dst_rect.h;
353 dst_h = req->dst_rect.w;
354 } else {
355 dst_w = req->dst_rect.w;
356 dst_h = req->dst_rect.h;
357 }
358
359 if (regs->op & (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON)) {
360 get_edge_info(req->src_rect.h, req->src_rect.y, dst_h,
361 &luma_interp[IMG_TOP], &luma_interp[IMG_BOTTOM],
362 &luma_repeat[IMG_TOP], &luma_repeat[IMG_BOTTOM]);
363 get_edge_info(req->src_rect.w, req->src_rect.x, dst_w,
364 &luma_interp[IMG_LEFT], &luma_interp[IMG_RIGHT],
365 &luma_repeat[IMG_LEFT], &luma_repeat[IMG_RIGHT]);
366 } else {
367 luma_interp[IMG_LEFT] = req->src_rect.x;
368 luma_interp[IMG_RIGHT] = req->src_rect.x + req->src_rect.w - 1;
369 luma_interp[IMG_TOP] = req->src_rect.y;
370 luma_interp[IMG_BOTTOM] = req->src_rect.y + req->src_rect.h - 1;
371 luma_repeat[IMG_LEFT] = 0;
372 luma_repeat[IMG_TOP] = 0;
373 luma_repeat[IMG_RIGHT] = 0;
374 luma_repeat[IMG_BOTTOM] = 0;
375 }
376
377 chroma_interp[IMG_LEFT] = luma_interp[IMG_LEFT];
378 chroma_interp[IMG_RIGHT] = luma_interp[IMG_RIGHT];
379 chroma_interp[IMG_TOP] = luma_interp[IMG_TOP];
380 chroma_interp[IMG_BOTTOM] = luma_interp[IMG_BOTTOM];
381
382 chroma_bound[IMG_LEFT] = req->src_rect.x;
383 chroma_bound[IMG_RIGHT] = req->src_rect.x + req->src_rect.w - 1;
384 chroma_bound[IMG_TOP] = req->src_rect.y;
385 chroma_bound[IMG_BOTTOM] = req->src_rect.y + req->src_rect.h - 1;
386
387 if (IS_YCRCB(req->src.format)) {
388 chroma_interp[IMG_LEFT] = chroma_interp[IMG_LEFT] >> 1;
389 chroma_interp[IMG_RIGHT] = (chroma_interp[IMG_RIGHT] + 1) >> 1;
390
391 chroma_bound[IMG_LEFT] = chroma_bound[IMG_LEFT] >> 1;
392 chroma_bound[IMG_RIGHT] = chroma_bound[IMG_RIGHT] >> 1;
393 }
394
395 if (req->src.format == MDP_Y_CBCR_H2V2 ||
396 req->src.format == MDP_Y_CRCB_H2V2) {
397 chroma_interp[IMG_TOP] = (chroma_interp[IMG_TOP] - 1) >> 1;
398 chroma_interp[IMG_BOTTOM] = (chroma_interp[IMG_BOTTOM] + 1)
399 >> 1;
400 chroma_bound[IMG_TOP] = (chroma_bound[IMG_TOP] + 1) >> 1;
401 chroma_bound[IMG_BOTTOM] = chroma_bound[IMG_BOTTOM] >> 1;
402 }
403
404 chroma_repeat[IMG_LEFT] = chroma_bound[IMG_LEFT] -
405 chroma_interp[IMG_LEFT];
406 chroma_repeat[IMG_RIGHT] = chroma_interp[IMG_RIGHT] -
407 chroma_bound[IMG_RIGHT];
408 chroma_repeat[IMG_TOP] = chroma_bound[IMG_TOP] -
409 chroma_interp[IMG_TOP];
410 chroma_repeat[IMG_BOTTOM] = chroma_interp[IMG_BOTTOM] -
411 chroma_bound[IMG_BOTTOM];
412
413 if (chroma_repeat[IMG_LEFT] < 0 || chroma_repeat[IMG_LEFT] > 3 ||
414 chroma_repeat[IMG_RIGHT] < 0 || chroma_repeat[IMG_RIGHT] > 3 ||
415 chroma_repeat[IMG_TOP] < 0 || chroma_repeat[IMG_TOP] > 3 ||
416 chroma_repeat[IMG_BOTTOM] < 0 || chroma_repeat[IMG_BOTTOM] > 3 ||
417 luma_repeat[IMG_LEFT] < 0 || luma_repeat[IMG_LEFT] > 3 ||
418 luma_repeat[IMG_RIGHT] < 0 || luma_repeat[IMG_RIGHT] > 3 ||
419 luma_repeat[IMG_TOP] < 0 || luma_repeat[IMG_TOP] > 3 ||
420 luma_repeat[IMG_BOTTOM] < 0 || luma_repeat[IMG_BOTTOM] > 3)
421 return -1;
422
423 regs->edge |= (chroma_repeat[IMG_LEFT] & 3) << MDP_LEFT_CHROMA;
424 regs->edge |= (chroma_repeat[IMG_RIGHT] & 3) << MDP_RIGHT_CHROMA;
425 regs->edge |= (chroma_repeat[IMG_TOP] & 3) << MDP_TOP_CHROMA;
426 regs->edge |= (chroma_repeat[IMG_BOTTOM] & 3) << MDP_BOTTOM_CHROMA;
427 regs->edge |= (luma_repeat[IMG_LEFT] & 3) << MDP_LEFT_LUMA;
428 regs->edge |= (luma_repeat[IMG_RIGHT] & 3) << MDP_RIGHT_LUMA;
429 regs->edge |= (luma_repeat[IMG_TOP] & 3) << MDP_TOP_LUMA;
430 regs->edge |= (luma_repeat[IMG_BOTTOM] & 3) << MDP_BOTTOM_LUMA;
431 return 0;
432 }
433
434 static int blit_scale(const struct mdp_info *mdp, struct mdp_blit_req *req,
435 struct mdp_regs *regs)
436 {
437 uint32_t phase_init_x, phase_init_y, phase_step_x, phase_step_y;
438 uint32_t scale_factor_x, scale_factor_y;
439 uint32_t downscale;
440 uint32_t dst_w, dst_h;
441
442 if (req->flags & MDP_ROT_90) {
443 dst_w = req->dst_rect.h;
444 dst_h = req->dst_rect.w;
445 } else {
446 dst_w = req->dst_rect.w;
447 dst_h = req->dst_rect.h;
448 }
449 if ((req->src_rect.w == dst_w) && (req->src_rect.h == dst_h) &&
450 !(req->flags & MDP_BLUR)) {
451 regs->phasex_init = 0;
452 regs->phasey_init = 0;
453 regs->phasex_step = 0;
454 regs->phasey_step = 0;
455 return 0;
456 }
457
458 if (scale_params(req->src_rect.w, dst_w, 1, &phase_init_x,
459 &phase_step_x) ||
460 scale_params(req->src_rect.h, dst_h, 1, &phase_init_y,
461 &phase_step_y))
462 return -1;
463
464 scale_factor_x = (dst_w * 10) / req->src_rect.w;
465 scale_factor_y = (dst_h * 10) / req->src_rect.h;
466
467 if (scale_factor_x > 8)
468 downscale = MDP_DOWNSCALE_PT8TO1;
469 else if (scale_factor_x > 6)
470 downscale = MDP_DOWNSCALE_PT6TOPT8;
471 else if (scale_factor_x > 4)
472 downscale = MDP_DOWNSCALE_PT4TOPT6;
473 else
474 downscale = MDP_DOWNSCALE_PT2TOPT4;
475 if (downscale != downscale_x_table) {
476 load_scale_table(mdp, mdp_downscale_x_table[downscale], 64);
477 downscale_x_table = downscale;
478 }
479
480 if (scale_factor_y > 8)
481 downscale = MDP_DOWNSCALE_PT8TO1;
482 else if (scale_factor_y > 6)
483 downscale = MDP_DOWNSCALE_PT6TOPT8;
484 else if (scale_factor_y > 4)
485 downscale = MDP_DOWNSCALE_PT4TOPT6;
486 else
487 downscale = MDP_DOWNSCALE_PT2TOPT4;
488 if (downscale != downscale_y_table) {
489 load_scale_table(mdp, mdp_downscale_y_table[downscale], 64);
490 downscale_y_table = downscale;
491 }
492
493 regs->phasex_init = phase_init_x;
494 regs->phasey_init = phase_init_y;
495 regs->phasex_step = phase_step_x;
496 regs->phasey_step = phase_step_y;
497 regs->op |= (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON);
498 return 0;
499
500 }
501
502 static void blit_blur(const struct mdp_info *mdp, struct mdp_blit_req *req,
503 struct mdp_regs *regs)
504 {
505 if (!(req->flags & MDP_BLUR))
506 return;
507
508 if (!(downscale_x_table == MDP_DOWNSCALE_BLUR &&
509 downscale_y_table == MDP_DOWNSCALE_BLUR)) {
510 load_scale_table(mdp, mdp_gaussian_blur_table, 128);
511 downscale_x_table = MDP_DOWNSCALE_BLUR;
512 downscale_y_table = MDP_DOWNSCALE_BLUR;
513 }
514
515 regs->op |= (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON);
516 }
517
518
519 #define IMG_LEN(rect_h, w, rect_w, bpp) (((rect_h) * w) * bpp)
520
521 #define Y_TO_CRCB_RATIO(format) \
522 ((format == MDP_Y_CBCR_H2V2 || format == MDP_Y_CRCB_H2V2) ? 2 :\
523 (format == MDP_Y_CBCR_H2V1 || format == MDP_Y_CRCB_H2V1) ? 1 : 1)
524
525 static void get_len(struct mdp_img *img, struct mdp_rect *rect, uint32_t bpp,
526 uint32_t *len0, uint32_t *len1)
527 {
528 *len0 = IMG_LEN(rect->h, img->width, rect->w, bpp);
529 if (IS_PSEUDOPLNR(img->format))
530 *len1 = *len0/Y_TO_CRCB_RATIO(img->format);
531 else
532 *len1 = 0;
533 }
534
535 static int valid_src_dst(unsigned long src_start, unsigned long src_len,
536 unsigned long dst_start, unsigned long dst_len,
537 struct mdp_blit_req *req, struct mdp_regs *regs)
538 {
539 unsigned long src_min_ok = src_start;
540 unsigned long src_max_ok = src_start + src_len;
541 unsigned long dst_min_ok = dst_start;
542 unsigned long dst_max_ok = dst_start + dst_len;
543 uint32_t src0_len, src1_len, dst0_len, dst1_len;
544 get_len(&req->src, &req->src_rect, regs->src_bpp, &src0_len,
545 &src1_len);
546 get_len(&req->dst, &req->dst_rect, regs->dst_bpp, &dst0_len,
547 &dst1_len);
548
549 if (regs->src0 < src_min_ok || regs->src0 > src_max_ok ||
550 regs->src0 + src0_len > src_max_ok) {
551 DLOG("invalid_src %x %x %lx %lx\n", regs->src0,
552 src0_len, src_min_ok, src_max_ok);
553 return 0;
554 }
555 if (regs->src_cfg & PPP_SRC_PLANE_PSEUDOPLNR) {
556 if (regs->src1 < src_min_ok || regs->src1 > src_max_ok ||
557 regs->src1 + src1_len > src_max_ok) {
558 DLOG("invalid_src1");
559 return 0;
560 }
561 }
562 if (regs->dst0 < dst_min_ok || regs->dst0 > dst_max_ok ||
563 regs->dst0 + dst0_len > dst_max_ok) {
564 DLOG("invalid_dst");
565 return 0;
566 }
567 if (regs->dst_cfg & PPP_SRC_PLANE_PSEUDOPLNR) {
568 if (regs->dst1 < dst_min_ok || regs->dst1 > dst_max_ok ||
569 regs->dst1 + dst1_len > dst_max_ok) {
570 DLOG("invalid_dst1");
571 return 0;
572 }
573 }
574 return 1;
575 }
576
577
578 static void flush_imgs(struct mdp_blit_req *req, struct mdp_regs *regs,
579 struct file *src_file, struct file *dst_file)
580 {
581 }
582
583 static void get_chroma_addr(struct mdp_img *img, struct mdp_rect *rect,
584 uint32_t base, uint32_t bpp, uint32_t cfg,
585 uint32_t *addr, uint32_t *ystride)
586 {
587 uint32_t compress_v = Y_TO_CRCB_RATIO(img->format);
588 uint32_t compress_h = 2;
589 uint32_t offset;
590
591 if (IS_PSEUDOPLNR(img->format)) {
592 offset = (rect->x / compress_h) * compress_h;
593 offset += rect->y == 0 ? 0 :
594 ((rect->y + 1) / compress_v) * img->width;
595 *addr = base + (img->width * img->height * bpp);
596 *addr += offset * bpp;
597 *ystride |= *ystride << 16;
598 } else {
599 *addr = 0;
600 }
601 }
602
603 static int send_blit(const struct mdp_info *mdp, struct mdp_blit_req *req,
604 struct mdp_regs *regs, struct file *src_file,
605 struct file *dst_file)
606 {
607 mdp_writel(mdp, 1, 0x060);
608 mdp_writel(mdp, regs->src_rect, PPP_ADDR_SRC_ROI);
609 mdp_writel(mdp, regs->src0, PPP_ADDR_SRC0);
610 mdp_writel(mdp, regs->src1, PPP_ADDR_SRC1);
611 mdp_writel(mdp, regs->src_ystride, PPP_ADDR_SRC_YSTRIDE);
612 mdp_writel(mdp, regs->src_cfg, PPP_ADDR_SRC_CFG);
613 mdp_writel(mdp, regs->src_pack, PPP_ADDR_SRC_PACK_PATTERN);
614
615 mdp_writel(mdp, regs->op, PPP_ADDR_OPERATION);
616 mdp_writel(mdp, regs->phasex_init, PPP_ADDR_PHASEX_INIT);
617 mdp_writel(mdp, regs->phasey_init, PPP_ADDR_PHASEY_INIT);
618 mdp_writel(mdp, regs->phasex_step, PPP_ADDR_PHASEX_STEP);
619 mdp_writel(mdp, regs->phasey_step, PPP_ADDR_PHASEY_STEP);
620
621 mdp_writel(mdp, (req->alpha << 24) | (req->transp_mask & 0xffffff),
622 PPP_ADDR_ALPHA_TRANSP);
623
624 mdp_writel(mdp, regs->dst_cfg, PPP_ADDR_DST_CFG);
625 mdp_writel(mdp, regs->dst_pack, PPP_ADDR_DST_PACK_PATTERN);
626 mdp_writel(mdp, regs->dst_rect, PPP_ADDR_DST_ROI);
627 mdp_writel(mdp, regs->dst0, PPP_ADDR_DST0);
628 mdp_writel(mdp, regs->dst1, PPP_ADDR_DST1);
629 mdp_writel(mdp, regs->dst_ystride, PPP_ADDR_DST_YSTRIDE);
630
631 mdp_writel(mdp, regs->edge, PPP_ADDR_EDGE);
632 if (regs->op & PPP_OP_BLEND_ON) {
633 mdp_writel(mdp, regs->dst0, PPP_ADDR_BG0);
634 mdp_writel(mdp, regs->dst1, PPP_ADDR_BG1);
635 mdp_writel(mdp, regs->dst_ystride, PPP_ADDR_BG_YSTRIDE);
636 mdp_writel(mdp, src_img_cfg[req->dst.format], PPP_ADDR_BG_CFG);
637 mdp_writel(mdp, pack_pattern[req->dst.format],
638 PPP_ADDR_BG_PACK_PATTERN);
639 }
640 flush_imgs(req, regs, src_file, dst_file);
641 mdp_writel(mdp, 0x1000, MDP_DISPLAY0_START);
642 return 0;
643 }
644
645 int mdp_ppp_blit(const struct mdp_info *mdp, struct mdp_blit_req *req,
646 struct file *src_file, unsigned long src_start, unsigned long src_len,
647 struct file *dst_file, unsigned long dst_start, unsigned long dst_len)
648 {
649 struct mdp_regs regs = {0};
650
651 if (unlikely(req->src.format >= MDP_IMGTYPE_LIMIT ||
652 req->dst.format >= MDP_IMGTYPE_LIMIT)) {
653 printk(KERN_ERR "mpd_ppp: img is of wrong format\n");
654 return -EINVAL;
655 }
656
657 if (unlikely(req->src_rect.x > req->src.width ||
658 req->src_rect.y > req->src.height ||
659 req->dst_rect.x > req->dst.width ||
660 req->dst_rect.y > req->dst.height)) {
661 printk(KERN_ERR "mpd_ppp: img rect is outside of img!\n");
662 return -EINVAL;
663 }
664
665 /* set the src image configuration */
666 regs.src_cfg = src_img_cfg[req->src.format];
667 regs.src_cfg |= (req->src_rect.x & 0x1) ? PPP_SRC_BPP_ROI_ODD_X : 0;
668 regs.src_cfg |= (req->src_rect.y & 0x1) ? PPP_SRC_BPP_ROI_ODD_Y : 0;
669 regs.src_rect = (req->src_rect.h << 16) | req->src_rect.w;
670 regs.src_pack = pack_pattern[req->src.format];
671
672 /* set the dest image configuration */
673 regs.dst_cfg = dst_img_cfg[req->dst.format] | PPP_DST_OUT_SEL_AXI;
674 regs.dst_rect = (req->dst_rect.h << 16) | req->dst_rect.w;
675 regs.dst_pack = pack_pattern[req->dst.format];
676
677 /* set src, bpp, start pixel and ystride */
678 regs.src_bpp = bytes_per_pixel[req->src.format];
679 regs.src0 = src_start + req->src.offset;
680 regs.src_ystride = req->src.width * regs.src_bpp;
681 get_chroma_addr(&req->src, &req->src_rect, regs.src0, regs.src_bpp,
682 regs.src_cfg, &regs.src1, &regs.src_ystride);
683 regs.src0 += (req->src_rect.x + (req->src_rect.y * req->src.width)) *
684 regs.src_bpp;
685
686 /* set dst, bpp, start pixel and ystride */
687 regs.dst_bpp = bytes_per_pixel[req->dst.format];
688 regs.dst0 = dst_start + req->dst.offset;
689 regs.dst_ystride = req->dst.width * regs.dst_bpp;
690 get_chroma_addr(&req->dst, &req->dst_rect, regs.dst0, regs.dst_bpp,
691 regs.dst_cfg, &regs.dst1, &regs.dst_ystride);
692 regs.dst0 += (req->dst_rect.x + (req->dst_rect.y * req->dst.width)) *
693 regs.dst_bpp;
694
695 if (!valid_src_dst(src_start, src_len, dst_start, dst_len, req,
696 &regs)) {
697 printk(KERN_ERR "mpd_ppp: final src or dst location is "
698 "invalid, are you trying to make an image too large "
699 "or to place it outside the screen?\n");
700 return -EINVAL;
701 }
702
703 /* set up operation register */
704 regs.op = 0;
705 blit_rotate(req, &regs);
706 blit_convert(req, &regs);
707 if (req->flags & MDP_DITHER)
708 regs.op |= PPP_OP_DITHER_EN;
709 blit_blend(req, &regs);
710 if (blit_scale(mdp, req, &regs)) {
711 printk(KERN_ERR "mpd_ppp: error computing scale for img.\n");
712 return -EINVAL;
713 }
714 blit_blur(mdp, req, &regs);
715 regs.op |= dst_op_chroma[req->dst.format] |
716 src_op_chroma[req->src.format];
717
718 /* if the image is YCRYCB, the x and w must be even */
719 if (unlikely(req->src.format == MDP_YCRYCB_H2V1)) {
720 req->src_rect.x = req->src_rect.x & (~0x1);
721 req->src_rect.w = req->src_rect.w & (~0x1);
722 req->dst_rect.x = req->dst_rect.x & (~0x1);
723 req->dst_rect.w = req->dst_rect.w & (~0x1);
724 }
725 if (get_edge_cond(req, &regs))
726 return -EINVAL;
727
728 send_blit(mdp, req, &regs, src_file, dst_file);
729 return 0;
730 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree