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mdp_ppp.c
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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 <linux/platform_data/video-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 }
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