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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / video / msm / mdp_ppp.c
blob2b6564e8bfeaa37e7f785904af2604ac847b4493
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_RGBX_8888] = 4,
73 [MDP_Y_CBCR_H2V1] = 1,
74 [MDP_Y_CBCR_H2V2] = 1,
75 [MDP_Y_CRCB_H2V1] = 1,
76 [MDP_Y_CRCB_H2V2] = 1,
77 [MDP_YCRYCB_H2V1] = 2
78 };
79
80 static uint32_t dst_op_chroma[] = {
81 PPP_ARRAY1(CHROMA_SAMP, DST)
82 };
83
84 static uint32_t src_op_chroma[] = {
85 PPP_ARRAY1(CHROMA_SAMP, SRC)
86 };
87
88 static uint32_t bg_op_chroma[] = {
89 PPP_ARRAY1(CHROMA_SAMP, BG)
90 };
91
92 static void rotate_dst_addr_x(struct mdp_blit_req *req, struct mdp_regs *regs)
93 {
94 regs->dst0 += (req->dst_rect.w -
95 min((uint32_t)16, req->dst_rect.w)) * regs->dst_bpp;
96 regs->dst1 += (req->dst_rect.w -
97 min((uint32_t)16, req->dst_rect.w)) * regs->dst_bpp;
98 }
99
100 static void rotate_dst_addr_y(struct mdp_blit_req *req, struct mdp_regs *regs)
101 {
102 regs->dst0 += (req->dst_rect.h -
103 min((uint32_t)16, req->dst_rect.h)) *
104 regs->dst_ystride;
105 regs->dst1 += (req->dst_rect.h -
106 min((uint32_t)16, req->dst_rect.h)) *
107 regs->dst_ystride;
108 }
109
110 static void blit_rotate(struct mdp_blit_req *req,
111 struct mdp_regs *regs)
112 {
113 if (req->flags == MDP_ROT_NOP)
114 return;
115
116 regs->op |= PPP_OP_ROT_ON;
117 if ((req->flags & MDP_ROT_90 || req->flags & MDP_FLIP_LR) &&
118 !(req->flags & MDP_ROT_90 && req->flags & MDP_FLIP_LR))
119 rotate_dst_addr_x(req, regs);
120 if (req->flags & MDP_ROT_90)
121 regs->op |= PPP_OP_ROT_90;
122 if (req->flags & MDP_FLIP_UD) {
123 regs->op |= PPP_OP_FLIP_UD;
124 rotate_dst_addr_y(req, regs);
125 }
126 if (req->flags & MDP_FLIP_LR)
127 regs->op |= PPP_OP_FLIP_LR;
128 }
129
130 static void blit_convert(struct mdp_blit_req *req, struct mdp_regs *regs)
131 {
132 if (req->src.format == req->dst.format)
133 return;
134 if (IS_RGB(req->src.format) && IS_YCRCB(req->dst.format)) {
135 regs->op |= PPP_OP_CONVERT_RGB2YCBCR | PPP_OP_CONVERT_ON;
136 } else if (IS_YCRCB(req->src.format) && IS_RGB(req->dst.format)) {
137 regs->op |= PPP_OP_CONVERT_YCBCR2RGB | PPP_OP_CONVERT_ON;
138 if (req->dst.format == MDP_RGB_565)
139 regs->op |= PPP_OP_CONVERT_MATRIX_SECONDARY;
140 }
141 }
142
143 #define GET_BIT_RANGE(value, high, low) \
144 (((1 << (high - low + 1)) - 1) & (value >> low))
145 static uint32_t transp_convert(struct mdp_blit_req *req)
146 {
147 uint32_t transp = 0;
148 if (req->src.format == MDP_RGB_565) {
149 /* pad each value to 8 bits by copying the high bits into the
150 * low end, convert RGB to RBG by switching low 2 components */
151 transp |= ((GET_BIT_RANGE(req->transp_mask, 15, 11) << 3) |
152 (GET_BIT_RANGE(req->transp_mask, 15, 13))) << 16;
153
154 transp |= ((GET_BIT_RANGE(req->transp_mask, 4, 0) << 3) |
155 (GET_BIT_RANGE(req->transp_mask, 4, 2))) << 8;
156
157 transp |= (GET_BIT_RANGE(req->transp_mask, 10, 5) << 2) |
158 (GET_BIT_RANGE(req->transp_mask, 10, 9));
159 } else {
160 /* convert RGB to RBG */
161 transp |= (GET_BIT_RANGE(req->transp_mask, 15, 8)) |
162 (GET_BIT_RANGE(req->transp_mask, 23, 16) << 16) |
163 (GET_BIT_RANGE(req->transp_mask, 7, 0) << 8);
164 }
165 return transp;
166 }
167 #undef GET_BIT_RANGE
168
169 static void blit_blend(struct mdp_blit_req *req, struct mdp_regs *regs)
170 {
171 /* TRANSP BLEND */
172 if (req->transp_mask != MDP_TRANSP_NOP) {
173 req->transp_mask = transp_convert(req);
174 if (req->alpha != MDP_ALPHA_NOP) {
175 /* use blended transparancy mode
176 * pixel = (src == transp) ? dst : blend
177 * blend is combo of blend_eq_sel and
178 * blend_alpha_sel */
179 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
180 PPP_OP_BLEND_ALPHA_BLEND_NORMAL |
181 PPP_OP_BLEND_CONSTANT_ALPHA |
182 PPP_BLEND_ALPHA_TRANSP;
183 } else {
184 /* simple transparancy mode
185 * pixel = (src == transp) ? dst : src */
186 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
187 PPP_OP_BLEND_SRCPIXEL_TRANSP;
188 }
189 }
190
191 req->alpha &= 0xff;
192 /* ALPHA BLEND */
193 if (HAS_ALPHA(req->src.format)) {
194 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
195 PPP_OP_BLEND_SRCPIXEL_ALPHA;
196 } else if (req->alpha < MDP_ALPHA_NOP) {
197 /* just blend by alpha */
198 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
199 PPP_OP_BLEND_ALPHA_BLEND_NORMAL |
200 PPP_OP_BLEND_CONSTANT_ALPHA;
201 }
202
203 regs->op |= bg_op_chroma[req->dst.format];
204 }
205
206 #define ONE_HALF (1LL << 32)
207 #define ONE (1LL << 33)
208 #define TWO (2LL << 33)
209 #define THREE (3LL << 33)
210 #define FRAC_MASK (ONE - 1)
211 #define INT_MASK (~FRAC_MASK)
212
213 static int scale_params(uint32_t dim_in, uint32_t dim_out, uint32_t origin,
214 uint32_t *phase_init, uint32_t *phase_step)
215 {
216 /* to improve precicsion calculations are done in U31.33 and converted
217 * to U3.29 at the end */
218 int64_t k1, k2, k3, k4, tmp;
219 uint64_t n, d, os, os_p, od, od_p, oreq;
220 unsigned rpa = 0;
221 int64_t ip64, delta;
222
223 if (dim_out % 3 == 0)
224 rpa = !(dim_in % (dim_out / 3));
225
226 n = ((uint64_t)dim_out) << 34;
227 d = dim_in;
228 if (!d)
229 return -1;
230 do_div(n, d);
231 k3 = (n + 1) >> 1;
232 if ((k3 >> 4) < (1LL << 27) || (k3 >> 4) > (1LL << 31)) {
233 DLOG("crap bad scale\n");
234 return -1;
235 }
236 n = ((uint64_t)dim_in) << 34;
237 d = (uint64_t)dim_out;
238 if (!d)
239 return -1;
240 do_div(n, d);
241 k1 = (n + 1) >> 1;
242 k2 = (k1 - ONE) >> 1;
243
244 *phase_init = (int)(k2 >> 4);
245 k4 = (k3 - ONE) >> 1;
246
247 if (rpa) {
248 os = ((uint64_t)origin << 33) - ONE_HALF;
249 tmp = (dim_out * os) + ONE_HALF;
250 if (!dim_in)
251 return -1;
252 do_div(tmp, dim_in);
253 od = tmp - ONE_HALF;
254 } else {
255 os = ((uint64_t)origin << 1) - 1;
256 od = (((k3 * os) >> 1) + k4);
257 }
258
259 od_p = od & INT_MASK;
260 if (od_p != od)
261 od_p += ONE;
262
263 if (rpa) {
264 tmp = (dim_in * od_p) + ONE_HALF;
265 if (!dim_in)
266 return -1;
267 do_div(tmp, dim_in);
268 os_p = tmp - ONE_HALF;
269 } else {
270 os_p = ((k1 * (od_p >> 33)) + k2);
271 }
272
273 oreq = (os_p & INT_MASK) - ONE;
274
275 ip64 = os_p - oreq;
276 delta = ((int64_t)(origin) << 33) - oreq;
277 ip64 -= delta;
278 /* limit to valid range before the left shift */
279 delta = (ip64 & (1LL << 63)) ? 4 : -4;
280 delta <<= 33;
281 while (abs((int)(ip64 >> 33)) > 4)
282 ip64 += delta;
283 *phase_init = (int)(ip64 >> 4);
284 *phase_step = (uint32_t)(k1 >> 4);
285 return 0;
286 }
287
288 static void load_scale_table(const struct mdp_info *mdp,
289 struct mdp_table_entry *table, int len)
290 {
291 int i;
292 for (i = 0; i < len; i++)
293 mdp_writel(mdp, table[i].val, table[i].reg);
294 }
295
296 enum {
297 IMG_LEFT,
298 IMG_RIGHT,
299 IMG_TOP,
300 IMG_BOTTOM,
301 };
302
303 static void get_edge_info(uint32_t src, uint32_t src_coord, uint32_t dst,
304 uint32_t *interp1, uint32_t *interp2,
305 uint32_t *repeat1, uint32_t *repeat2) {
306 if (src > 3 * dst) {
307 *interp1 = 0;
308 *interp2 = src - 1;
309 *repeat1 = 0;
310 *repeat2 = 0;
311 } else if (src == 3 * dst) {
312 *interp1 = 0;
313 *interp2 = src;
314 *repeat1 = 0;
315 *repeat2 = 1;
316 } else if (src > dst && src < 3 * dst) {
317 *interp1 = -1;
318 *interp2 = src;
319 *repeat1 = 1;
320 *repeat2 = 1;
321 } else if (src == dst) {
322 *interp1 = -1;
323 *interp2 = src + 1;
324 *repeat1 = 1;
325 *repeat2 = 2;
326 } else {
327 *interp1 = -2;
328 *interp2 = src + 1;
329 *repeat1 = 2;
330 *repeat2 = 2;
331 }
332 *interp1 += src_coord;
333 *interp2 += src_coord;
334 }
335
336 static int get_edge_cond(struct mdp_blit_req *req, struct mdp_regs *regs)
337 {
338 int32_t luma_interp[4];
339 int32_t luma_repeat[4];
340 int32_t chroma_interp[4];
341 int32_t chroma_bound[4];
342 int32_t chroma_repeat[4];
343 uint32_t dst_w, dst_h;
344
345 memset(&luma_interp, 0, sizeof(int32_t) * 4);
346 memset(&luma_repeat, 0, sizeof(int32_t) * 4);
347 memset(&chroma_interp, 0, sizeof(int32_t) * 4);
348 memset(&chroma_bound, 0, sizeof(int32_t) * 4);
349 memset(&chroma_repeat, 0, sizeof(int32_t) * 4);
350 regs->edge = 0;
351
352 if (req->flags & MDP_ROT_90) {
353 dst_w = req->dst_rect.h;
354 dst_h = req->dst_rect.w;
355 } else {
356 dst_w = req->dst_rect.w;
357 dst_h = req->dst_rect.h;
358 }
359
360 if (regs->op & (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON)) {
361 get_edge_info(req->src_rect.h, req->src_rect.y, dst_h,
362 &luma_interp[IMG_TOP], &luma_interp[IMG_BOTTOM],
363 &luma_repeat[IMG_TOP], &luma_repeat[IMG_BOTTOM]);
364 get_edge_info(req->src_rect.w, req->src_rect.x, dst_w,
365 &luma_interp[IMG_LEFT], &luma_interp[IMG_RIGHT],
366 &luma_repeat[IMG_LEFT], &luma_repeat[IMG_RIGHT]);
367 } else {
368 luma_interp[IMG_LEFT] = req->src_rect.x;
369 luma_interp[IMG_RIGHT] = req->src_rect.x + req->src_rect.w - 1;
370 luma_interp[IMG_TOP] = req->src_rect.y;
371 luma_interp[IMG_BOTTOM] = req->src_rect.y + req->src_rect.h - 1;
372 luma_repeat[IMG_LEFT] = 0;
373 luma_repeat[IMG_TOP] = 0;
374 luma_repeat[IMG_RIGHT] = 0;
375 luma_repeat[IMG_BOTTOM] = 0;
376 }
377
378 chroma_interp[IMG_LEFT] = luma_interp[IMG_LEFT];
379 chroma_interp[IMG_RIGHT] = luma_interp[IMG_RIGHT];
380 chroma_interp[IMG_TOP] = luma_interp[IMG_TOP];
381 chroma_interp[IMG_BOTTOM] = luma_interp[IMG_BOTTOM];
382
383 chroma_bound[IMG_LEFT] = req->src_rect.x;
384 chroma_bound[IMG_RIGHT] = req->src_rect.x + req->src_rect.w - 1;
385 chroma_bound[IMG_TOP] = req->src_rect.y;
386 chroma_bound[IMG_BOTTOM] = req->src_rect.y + req->src_rect.h - 1;
387
388 if (IS_YCRCB(req->src.format)) {
389 chroma_interp[IMG_LEFT] = chroma_interp[IMG_LEFT] >> 1;
390 chroma_interp[IMG_RIGHT] = (chroma_interp[IMG_RIGHT] + 1) >> 1;
391
392 chroma_bound[IMG_LEFT] = chroma_bound[IMG_LEFT] >> 1;
393 chroma_bound[IMG_RIGHT] = chroma_bound[IMG_RIGHT] >> 1;
394 }
395
396 if (req->src.format == MDP_Y_CBCR_H2V2 ||
397 req->src.format == MDP_Y_CRCB_H2V2) {
398 chroma_interp[IMG_TOP] = (chroma_interp[IMG_TOP] - 1) >> 1;
399 chroma_interp[IMG_BOTTOM] = (chroma_interp[IMG_BOTTOM] + 1)
400 >> 1;
401 chroma_bound[IMG_TOP] = (chroma_bound[IMG_TOP] + 1) >> 1;
402 chroma_bound[IMG_BOTTOM] = chroma_bound[IMG_BOTTOM] >> 1;
403 }
404
405 chroma_repeat[IMG_LEFT] = chroma_bound[IMG_LEFT] -
406 chroma_interp[IMG_LEFT];
407 chroma_repeat[IMG_RIGHT] = chroma_interp[IMG_RIGHT] -
408 chroma_bound[IMG_RIGHT];
409 chroma_repeat[IMG_TOP] = chroma_bound[IMG_TOP] -
410 chroma_interp[IMG_TOP];
411 chroma_repeat[IMG_BOTTOM] = chroma_interp[IMG_BOTTOM] -
412 chroma_bound[IMG_BOTTOM];
413
414 if (chroma_repeat[IMG_LEFT] < 0 || chroma_repeat[IMG_LEFT] > 3 ||
415 chroma_repeat[IMG_RIGHT] < 0 || chroma_repeat[IMG_RIGHT] > 3 ||
416 chroma_repeat[IMG_TOP] < 0 || chroma_repeat[IMG_TOP] > 3 ||
417 chroma_repeat[IMG_BOTTOM] < 0 || chroma_repeat[IMG_BOTTOM] > 3 ||
418 luma_repeat[IMG_LEFT] < 0 || luma_repeat[IMG_LEFT] > 3 ||
419 luma_repeat[IMG_RIGHT] < 0 || luma_repeat[IMG_RIGHT] > 3 ||
420 luma_repeat[IMG_TOP] < 0 || luma_repeat[IMG_TOP] > 3 ||
421 luma_repeat[IMG_BOTTOM] < 0 || luma_repeat[IMG_BOTTOM] > 3)
422 return -1;
423
424 regs->edge |= (chroma_repeat[IMG_LEFT] & 3) << MDP_LEFT_CHROMA;
425 regs->edge |= (chroma_repeat[IMG_RIGHT] & 3) << MDP_RIGHT_CHROMA;
426 regs->edge |= (chroma_repeat[IMG_TOP] & 3) << MDP_TOP_CHROMA;
427 regs->edge |= (chroma_repeat[IMG_BOTTOM] & 3) << MDP_BOTTOM_CHROMA;
428 regs->edge |= (luma_repeat[IMG_LEFT] & 3) << MDP_LEFT_LUMA;
429 regs->edge |= (luma_repeat[IMG_RIGHT] & 3) << MDP_RIGHT_LUMA;
430 regs->edge |= (luma_repeat[IMG_TOP] & 3) << MDP_TOP_LUMA;
431 regs->edge |= (luma_repeat[IMG_BOTTOM] & 3) << MDP_BOTTOM_LUMA;
432 return 0;
433 }
434
435 static int blit_scale(const struct mdp_info *mdp, struct mdp_blit_req *req,
436 struct mdp_regs *regs)
437 {
438 uint32_t phase_init_x, phase_init_y, phase_step_x, phase_step_y;
439 uint32_t scale_factor_x, scale_factor_y;
440 uint32_t downscale;
441 uint32_t dst_w, dst_h;
442
443 if (req->flags & MDP_ROT_90) {
444 dst_w = req->dst_rect.h;
445 dst_h = req->dst_rect.w;
446 } else {
447 dst_w = req->dst_rect.w;
448 dst_h = req->dst_rect.h;
449 }
450 if ((req->src_rect.w == dst_w) && (req->src_rect.h == dst_h) &&
451 !(req->flags & MDP_BLUR)) {
452 regs->phasex_init = 0;
453 regs->phasey_init = 0;
454 regs->phasex_step = 0;
455 regs->phasey_step = 0;
456 return 0;
457 }
458
459 if (scale_params(req->src_rect.w, dst_w, 1, &phase_init_x,
460 &phase_step_x) ||
461 scale_params(req->src_rect.h, dst_h, 1, &phase_init_y,
462 &phase_step_y))
463 return -1;
464
465 scale_factor_x = (dst_w * 10) / req->src_rect.w;
466 scale_factor_y = (dst_h * 10) / req->src_rect.h;
467
468 if (scale_factor_x > 8)
469 downscale = MDP_DOWNSCALE_PT8TO1;
470 else if (scale_factor_x > 6)
471 downscale = MDP_DOWNSCALE_PT6TOPT8;
472 else if (scale_factor_x > 4)
473 downscale = MDP_DOWNSCALE_PT4TOPT6;
474 else
475 downscale = MDP_DOWNSCALE_PT2TOPT4;
476 if (downscale != downscale_x_table) {
477 load_scale_table(mdp, mdp_downscale_x_table[downscale], 64);
478 downscale_x_table = downscale;
479 }
480
481 if (scale_factor_y > 8)
482 downscale = MDP_DOWNSCALE_PT8TO1;
483 else if (scale_factor_y > 6)
484 downscale = MDP_DOWNSCALE_PT6TOPT8;
485 else if (scale_factor_y > 4)
486 downscale = MDP_DOWNSCALE_PT4TOPT6;
487 else
488 downscale = MDP_DOWNSCALE_PT2TOPT4;
489 if (downscale != downscale_y_table) {
490 load_scale_table(mdp, mdp_downscale_y_table[downscale], 64);
491 downscale_y_table = downscale;
492 }
493
494 regs->phasex_init = phase_init_x;
495 regs->phasey_init = phase_init_y;
496 regs->phasex_step = phase_step_x;
497 regs->phasey_step = phase_step_y;
498 regs->op |= (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON);
499 return 0;
500
501 }
502
503 static void blit_blur(const struct mdp_info *mdp, struct mdp_blit_req *req,
504 struct mdp_regs *regs)
505 {
506 if (!(req->flags & MDP_BLUR))
507 return;
508
509 if (!(downscale_x_table == MDP_DOWNSCALE_BLUR &&
510 downscale_y_table == MDP_DOWNSCALE_BLUR)) {
511 load_scale_table(mdp, mdp_gaussian_blur_table, 128);
512 downscale_x_table = MDP_DOWNSCALE_BLUR;
513 downscale_y_table = MDP_DOWNSCALE_BLUR;
514 }
515
516 regs->op |= (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON);
517 }
518
519
520 #define IMG_LEN(rect_h, w, rect_w, bpp) (((rect_h) * w) * bpp)
521
522 #define Y_TO_CRCB_RATIO(format) \
523 ((format == MDP_Y_CBCR_H2V2 || format == MDP_Y_CRCB_H2V2) ? 2 :\
524 (format == MDP_Y_CBCR_H2V1 || format == MDP_Y_CRCB_H2V1) ? 1 : 1)
525
526 static void get_len(struct mdp_img *img, struct mdp_rect *rect, uint32_t bpp,
527 uint32_t *len0, uint32_t *len1)
528 {
529 *len0 = IMG_LEN(rect->h, img->width, rect->w, bpp);
530 if (IS_PSEUDOPLNR(img->format))
531 *len1 = *len0/Y_TO_CRCB_RATIO(img->format);
532 else
533 *len1 = 0;
534 }
535
536 static int valid_src_dst(unsigned long src_start, unsigned long src_len,
537 unsigned long dst_start, unsigned long dst_len,
538 struct mdp_blit_req *req, struct mdp_regs *regs)
539 {
540 unsigned long src_min_ok = src_start;
541 unsigned long src_max_ok = src_start + src_len;
542 unsigned long dst_min_ok = dst_start;
543 unsigned long dst_max_ok = dst_start + dst_len;
544 uint32_t src0_len, src1_len, dst0_len, dst1_len;
545 get_len(&req->src, &req->src_rect, regs->src_bpp, &src0_len,
546 &src1_len);
547 get_len(&req->dst, &req->dst_rect, regs->dst_bpp, &dst0_len,
548 &dst1_len);
549
550 if (regs->src0 < src_min_ok || regs->src0 > src_max_ok ||
551 regs->src0 + src0_len > src_max_ok) {
552 DLOG("invalid_src %x %x %lx %lx\n", regs->src0,
553 src0_len, src_min_ok, src_max_ok);
554 return 0;
555 }
556 if (regs->src_cfg & PPP_SRC_PLANE_PSEUDOPLNR) {
557 if (regs->src1 < src_min_ok || regs->src1 > src_max_ok ||
558 regs->src1 + src1_len > src_max_ok) {
559 DLOG("invalid_src1");
560 return 0;
561 }
562 }
563 if (regs->dst0 < dst_min_ok || regs->dst0 > dst_max_ok ||
564 regs->dst0 + dst0_len > dst_max_ok) {
565 DLOG("invalid_dst");
566 return 0;
567 }
568 if (regs->dst_cfg & PPP_SRC_PLANE_PSEUDOPLNR) {
569 if (regs->dst1 < dst_min_ok || regs->dst1 > dst_max_ok ||
570 regs->dst1 + dst1_len > dst_max_ok) {
571 DLOG("invalid_dst1");
572 return 0;
573 }
574 }
575 return 1;
576 }
577
578
579 static void flush_imgs(struct mdp_blit_req *req, struct mdp_regs *regs,
580 struct file *src_file, struct file *dst_file)
581 {
582 }
583
584 static void get_chroma_addr(struct mdp_img *img, struct mdp_rect *rect,
585 uint32_t base, uint32_t bpp, uint32_t cfg,
586 uint32_t *addr, uint32_t *ystride)
587 {
588 uint32_t compress_v = Y_TO_CRCB_RATIO(img->format);
589 uint32_t compress_h = 2;
590 uint32_t offset;
591
592 if (IS_PSEUDOPLNR(img->format)) {
593 offset = (rect->x / compress_h) * compress_h;
594 offset += rect->y == 0 ? 0 :
595 ((rect->y + 1) / compress_v) * img->width;
596 *addr = base + (img->width * img->height * bpp);
597 *addr += offset * bpp;
598 *ystride |= *ystride << 16;
599 } else {
600 *addr = 0;
601 }
602 }
603
604 static int send_blit(const struct mdp_info *mdp, struct mdp_blit_req *req,
605 struct mdp_regs *regs, struct file *src_file,
606 struct file *dst_file)
607 {
608 mdp_writel(mdp, 1, 0x060);
609 mdp_writel(mdp, regs->src_rect, PPP_ADDR_SRC_ROI);
610 mdp_writel(mdp, regs->src0, PPP_ADDR_SRC0);
611 mdp_writel(mdp, regs->src1, PPP_ADDR_SRC1);
612 mdp_writel(mdp, regs->src_ystride, PPP_ADDR_SRC_YSTRIDE);
613 mdp_writel(mdp, regs->src_cfg, PPP_ADDR_SRC_CFG);
614 mdp_writel(mdp, regs->src_pack, PPP_ADDR_SRC_PACK_PATTERN);
615
616 mdp_writel(mdp, regs->op, PPP_ADDR_OPERATION);
617 mdp_writel(mdp, regs->phasex_init, PPP_ADDR_PHASEX_INIT);
618 mdp_writel(mdp, regs->phasey_init, PPP_ADDR_PHASEY_INIT);
619 mdp_writel(mdp, regs->phasex_step, PPP_ADDR_PHASEX_STEP);
620 mdp_writel(mdp, regs->phasey_step, PPP_ADDR_PHASEY_STEP);
621
622 mdp_writel(mdp, (req->alpha << 24) | (req->transp_mask & 0xffffff),
623 PPP_ADDR_ALPHA_TRANSP);
624
625 mdp_writel(mdp, regs->dst_cfg, PPP_ADDR_DST_CFG);
626 mdp_writel(mdp, regs->dst_pack, PPP_ADDR_DST_PACK_PATTERN);
627 mdp_writel(mdp, regs->dst_rect, PPP_ADDR_DST_ROI);
628 mdp_writel(mdp, regs->dst0, PPP_ADDR_DST0);
629 mdp_writel(mdp, regs->dst1, PPP_ADDR_DST1);
630 mdp_writel(mdp, regs->dst_ystride, PPP_ADDR_DST_YSTRIDE);
631
632 mdp_writel(mdp, regs->edge, PPP_ADDR_EDGE);
633 if (regs->op & PPP_OP_BLEND_ON) {
634 mdp_writel(mdp, regs->dst0, PPP_ADDR_BG0);
635 mdp_writel(mdp, regs->dst1, PPP_ADDR_BG1);
636 mdp_writel(mdp, regs->dst_ystride, PPP_ADDR_BG_YSTRIDE);
637 mdp_writel(mdp, src_img_cfg[req->dst.format], PPP_ADDR_BG_CFG);
638 mdp_writel(mdp, pack_pattern[req->dst.format],
639 PPP_ADDR_BG_PACK_PATTERN);
640 }
641 flush_imgs(req, regs, src_file, dst_file);
642 mdp_writel(mdp, 0x1000, MDP_DISPLAY0_START);
643 return 0;
644 }
645
646 int mdp_ppp_blit(const struct mdp_info *mdp, struct mdp_blit_req *req,
647 struct file *src_file, unsigned long src_start, unsigned long src_len,
648 struct file *dst_file, unsigned long dst_start, unsigned long dst_len)
649 {
650 struct mdp_regs regs = {0};
651
652 if (unlikely(req->src.format >= MDP_IMGTYPE_LIMIT ||
653 req->dst.format >= MDP_IMGTYPE_LIMIT)) {
654 printk(KERN_ERR "mpd_ppp: img is of wrong format\n");
655 return -EINVAL;
656 }
657
658 if (unlikely(req->src_rect.x > req->src.width ||
659 req->src_rect.y > req->src.height ||
660 req->dst_rect.x > req->dst.width ||
661 req->dst_rect.y > req->dst.height)) {
662 printk(KERN_ERR "mpd_ppp: img rect is outside of img!\n");
663 return -EINVAL;
664 }
665
666 /* set the src image configuration */
667 regs.src_cfg = src_img_cfg[req->src.format];
668 regs.src_cfg |= (req->src_rect.x & 0x1) ? PPP_SRC_BPP_ROI_ODD_X : 0;
669 regs.src_cfg |= (req->src_rect.y & 0x1) ? PPP_SRC_BPP_ROI_ODD_Y : 0;
670 regs.src_rect = (req->src_rect.h << 16) | req->src_rect.w;
671 regs.src_pack = pack_pattern[req->src.format];
672
673 /* set the dest image configuration */
674 regs.dst_cfg = dst_img_cfg[req->dst.format] | PPP_DST_OUT_SEL_AXI;
675 regs.dst_rect = (req->dst_rect.h << 16) | req->dst_rect.w;
676 regs.dst_pack = pack_pattern[req->dst.format];
677
678 /* set src, bpp, start pixel and ystride */
679 regs.src_bpp = bytes_per_pixel[req->src.format];
680 regs.src0 = src_start + req->src.offset;
681 regs.src_ystride = req->src.width * regs.src_bpp;
682 get_chroma_addr(&req->src, &req->src_rect, regs.src0, regs.src_bpp,
683 regs.src_cfg, &regs.src1, &regs.src_ystride);
684 regs.src0 += (req->src_rect.x + (req->src_rect.y * req->src.width)) *
685 regs.src_bpp;
686
687 /* set dst, bpp, start pixel and ystride */
688 regs.dst_bpp = bytes_per_pixel[req->dst.format];
689 regs.dst0 = dst_start + req->dst.offset;
690 regs.dst_ystride = req->dst.width * regs.dst_bpp;
691 get_chroma_addr(&req->dst, &req->dst_rect, regs.dst0, regs.dst_bpp,
692 regs.dst_cfg, &regs.dst1, &regs.dst_ystride);
693 regs.dst0 += (req->dst_rect.x + (req->dst_rect.y * req->dst.width)) *
694 regs.dst_bpp;
695
696 if (!valid_src_dst(src_start, src_len, dst_start, dst_len, req,
697 &regs)) {
698 printk(KERN_ERR "mpd_ppp: final src or dst location is "
699 "invalid, are you trying to make an image too large "
700 "or to place it outside the screen?\n");
701 return -EINVAL;
702 }
703
704 /* set up operation register */
705 regs.op = 0;
706 blit_rotate(req, &regs);
707 blit_convert(req, &regs);
708 if (req->flags & MDP_DITHER)
709 regs.op |= PPP_OP_DITHER_EN;
710 blit_blend(req, &regs);
711 if (blit_scale(mdp, req, &regs)) {
712 printk(KERN_ERR "mpd_ppp: error computing scale for img.\n");
713 return -EINVAL;
714 }
715 blit_blur(mdp, req, &regs);
716 regs.op |= dst_op_chroma[req->dst.format] |
717 src_op_chroma[req->src.format];
718
719 /* if the image is YCRYCB, the x and w must be even */
720 if (unlikely(req->src.format == MDP_YCRYCB_H2V1)) {
721 req->src_rect.x = req->src_rect.x & (~0x1);
722 req->src_rect.w = req->src_rect.w & (~0x1);
723 req->dst_rect.x = req->dst_rect.x & (~0x1);
724 req->dst_rect.w = req->dst_rect.w & (~0x1);
725 }
726 if (get_edge_cond(req, &regs))
727 return -EINVAL;
728
729 send_blit(mdp, req, &regs, src_file, dst_file);
730 return 0;
731 }