drivers/gpu/ipu-v3/ipu-ic.c

   1 /*
   2  * Copyright (C) 2012-2014 Mentor Graphics Inc.
   3  * Copyright 2005-2012 Freescale Semiconductor, Inc. All Rights Reserved.
   4  *
   5  * The code contained herein is licensed under the GNU General Public
   6  * License. You may obtain a copy of the GNU General Public License
   7  * Version 2 or later at the following locations:
   8  *
   9  * http://www.opensource.org/licenses/gpl-license.html
  10  * http://www.gnu.org/copyleft/gpl.html
  11  */
  12
  13 #include <linux/types.h>
  14 #include <linux/init.h>
  15 #include <linux/errno.h>
  16 #include <linux/spinlock.h>
  17 #include <linux/bitrev.h>
  18 #include <linux/io.h>
  19 #include <linux/err.h>
  20 #include "ipu-prv.h"
  21
  22 /* IC Register Offsets */
  23 #define IC_CONF                 0x0000
  24 #define IC_PRP_ENC_RSC          0x0004
  25 #define IC_PRP_VF_RSC           0x0008
  26 #define IC_PP_RSC               0x000C
  27 #define IC_CMBP_1               0x0010
  28 #define IC_CMBP_2               0x0014
  29 #define IC_IDMAC_1              0x0018
  30 #define IC_IDMAC_2              0x001C
  31 #define IC_IDMAC_3              0x0020
  32 #define IC_IDMAC_4              0x0024
  33
  34 /* IC Register Fields */
  35 #define IC_CONF_PRPENC_EN       (1 << 0)
  36 #define IC_CONF_PRPENC_CSC1     (1 << 1)
  37 #define IC_CONF_PRPENC_ROT_EN   (1 << 2)
  38 #define IC_CONF_PRPVF_EN        (1 << 8)
  39 #define IC_CONF_PRPVF_CSC1      (1 << 9)
  40 #define IC_CONF_PRPVF_CSC2      (1 << 10)
  41 #define IC_CONF_PRPVF_CMB       (1 << 11)
  42 #define IC_CONF_PRPVF_ROT_EN    (1 << 12)
  43 #define IC_CONF_PP_EN           (1 << 16)
  44 #define IC_CONF_PP_CSC1         (1 << 17)
  45 #define IC_CONF_PP_CSC2         (1 << 18)
  46 #define IC_CONF_PP_CMB          (1 << 19)
  47 #define IC_CONF_PP_ROT_EN       (1 << 20)
  48 #define IC_CONF_IC_GLB_LOC_A    (1 << 28)
  49 #define IC_CONF_KEY_COLOR_EN    (1 << 29)
  50 #define IC_CONF_RWS_EN          (1 << 30)
  51 #define IC_CONF_CSI_MEM_WR_EN   (1 << 31)
  52
  53 #define IC_IDMAC_1_CB0_BURST_16         (1 << 0)
  54 #define IC_IDMAC_1_CB1_BURST_16         (1 << 1)
  55 #define IC_IDMAC_1_CB2_BURST_16         (1 << 2)
  56 #define IC_IDMAC_1_CB3_BURST_16         (1 << 3)
  57 #define IC_IDMAC_1_CB4_BURST_16         (1 << 4)
  58 #define IC_IDMAC_1_CB5_BURST_16         (1 << 5)
  59 #define IC_IDMAC_1_CB6_BURST_16         (1 << 6)
  60 #define IC_IDMAC_1_CB7_BURST_16         (1 << 7)
  61 #define IC_IDMAC_1_PRPENC_ROT_MASK      (0x7 << 11)
  62 #define IC_IDMAC_1_PRPENC_ROT_OFFSET    11
  63 #define IC_IDMAC_1_PRPVF_ROT_MASK       (0x7 << 14)
  64 #define IC_IDMAC_1_PRPVF_ROT_OFFSET     14
  65 #define IC_IDMAC_1_PP_ROT_MASK          (0x7 << 17)
  66 #define IC_IDMAC_1_PP_ROT_OFFSET        17
  67 #define IC_IDMAC_1_PP_FLIP_RS           (1 << 22)
  68 #define IC_IDMAC_1_PRPVF_FLIP_RS        (1 << 21)
  69 #define IC_IDMAC_1_PRPENC_FLIP_RS       (1 << 20)
  70
  71 #define IC_IDMAC_2_PRPENC_HEIGHT_MASK   (0x3ff << 0)
  72 #define IC_IDMAC_2_PRPENC_HEIGHT_OFFSET 0
  73 #define IC_IDMAC_2_PRPVF_HEIGHT_MASK    (0x3ff << 10)
  74 #define IC_IDMAC_2_PRPVF_HEIGHT_OFFSET  10
  75 #define IC_IDMAC_2_PP_HEIGHT_MASK       (0x3ff << 20)
  76 #define IC_IDMAC_2_PP_HEIGHT_OFFSET     20
  77
  78 #define IC_IDMAC_3_PRPENC_WIDTH_MASK    (0x3ff << 0)
  79 #define IC_IDMAC_3_PRPENC_WIDTH_OFFSET  0
  80 #define IC_IDMAC_3_PRPVF_WIDTH_MASK     (0x3ff << 10)
  81 #define IC_IDMAC_3_PRPVF_WIDTH_OFFSET   10
  82 #define IC_IDMAC_3_PP_WIDTH_MASK        (0x3ff << 20)
  83 #define IC_IDMAC_3_PP_WIDTH_OFFSET      20
  84
  85 struct ic_task_regoffs {
  86         u32 rsc;
  87         u32 tpmem_csc[2];
  88 };
  89
  90 struct ic_task_bitfields {
  91         u32 ic_conf_en;
  92         u32 ic_conf_rot_en;
  93         u32 ic_conf_cmb_en;
  94         u32 ic_conf_csc1_en;
  95         u32 ic_conf_csc2_en;
  96         u32 ic_cmb_galpha_bit;
  97 };
  98
  99 static const struct ic_task_regoffs ic_task_reg[IC_NUM_TASKS] = {
 100         [IC_TASK_ENCODER] = {
 101                 .rsc = IC_PRP_ENC_RSC,
 102                 .tpmem_csc = {0x2008, 0},
 103         },
 104         [IC_TASK_VIEWFINDER] = {
 105                 .rsc = IC_PRP_VF_RSC,
 106                 .tpmem_csc = {0x4028, 0x4040},
 107         },
 108         [IC_TASK_POST_PROCESSOR] = {
 109                 .rsc = IC_PP_RSC,
 110                 .tpmem_csc = {0x6060, 0x6078},
 111         },
 112 };
 113
 114 static const struct ic_task_bitfields ic_task_bit[IC_NUM_TASKS] = {
 115         [IC_TASK_ENCODER] = {
 116                 .ic_conf_en = IC_CONF_PRPENC_EN,
 117                 .ic_conf_rot_en = IC_CONF_PRPENC_ROT_EN,
 118                 .ic_conf_cmb_en = 0,    /* NA */
 119                 .ic_conf_csc1_en = IC_CONF_PRPENC_CSC1,
 120                 .ic_conf_csc2_en = 0,   /* NA */
 121                 .ic_cmb_galpha_bit = 0, /* NA */
 122         },
 123         [IC_TASK_VIEWFINDER] = {
 124                 .ic_conf_en = IC_CONF_PRPVF_EN,
 125                 .ic_conf_rot_en = IC_CONF_PRPVF_ROT_EN,
 126                 .ic_conf_cmb_en = IC_CONF_PRPVF_CMB,
 127                 .ic_conf_csc1_en = IC_CONF_PRPVF_CSC1,
 128                 .ic_conf_csc2_en = IC_CONF_PRPVF_CSC2,
 129                 .ic_cmb_galpha_bit = 0,
 130         },
 131         [IC_TASK_POST_PROCESSOR] = {
 132                 .ic_conf_en = IC_CONF_PP_EN,
 133                 .ic_conf_rot_en = IC_CONF_PP_ROT_EN,
 134                 .ic_conf_cmb_en = IC_CONF_PP_CMB,
 135                 .ic_conf_csc1_en = IC_CONF_PP_CSC1,
 136                 .ic_conf_csc2_en = IC_CONF_PP_CSC2,
 137                 .ic_cmb_galpha_bit = 8,
 138         },
 139 };
 140
 141 struct ipu_ic_priv;
 142
 143 struct ipu_ic {
 144         enum ipu_ic_task task;
 145         const struct ic_task_regoffs *reg;
 146         const struct ic_task_bitfields *bit;
 147
 148         enum ipu_color_space in_cs, g_in_cs;
 149         enum ipu_color_space out_cs;
 150         bool graphics;
 151         bool rotation;
 152         bool in_use;
 153
 154         struct ipu_ic_priv *priv;
 155 };
 156
 157 struct ipu_ic_priv {
 158         void __iomem *base;
 159         void __iomem *tpmem_base;
 160         spinlock_t lock;
 161         struct ipu_soc *ipu;
 162         int use_count;
 163         int irt_use_count;
 164         struct ipu_ic task[IC_NUM_TASKS];
 165 };
 166
 167 static inline u32 ipu_ic_read(struct ipu_ic *ic, unsigned offset)
 168 {
 169         return readl(ic->priv->base + offset);
 170 }
 171
 172 static inline void ipu_ic_write(struct ipu_ic *ic, u32 value, unsigned offset)
 173 {
 174         writel(value, ic->priv->base + offset);
 175 }
 176
 177 struct ic_csc_params {
 178         s16 coeff[3][3];        /* signed 9-bit integer coefficients */
 179         s16 offset[3];          /* signed 11+2-bit fixed point offset */
 180         u8 scale:2;             /* scale coefficients * 2^(scale-1) */
 181         bool sat:1;             /* saturate to (16, 235(Y) / 240(U, V)) */
 182 };
 183
 184 /*
 185  * Y = R *  .299 + G *  .587 + B *  .114;
 186  * U = R * -.169 + G * -.332 + B *  .500 + 128.;
 187  * V = R *  .500 + G * -.419 + B * -.0813 + 128.;
 188  */
 189 static const struct ic_csc_params ic_csc_rgb2ycbcr = {
 190         .coeff = {
 191                 { 77, 150, 29 },
 192                 { 469, 427, 128 },
 193                 { 128, 405, 491 },
 194         },
 195         .offset = { 0, 512, 512 },
 196         .scale = 1,
 197 };
 198
 199 /* transparent RGB->RGB matrix for graphics combining */
 200 static const struct ic_csc_params ic_csc_rgb2rgb = {
 201         .coeff = {
 202                 { 128, 0, 0 },
 203                 { 0, 128, 0 },
 204                 { 0, 0, 128 },
 205         },
 206         .scale = 2,
 207 };
 208
 209 /*
 210  * R = (1.164 * (Y - 16)) + (1.596 * (Cr - 128));
 211  * G = (1.164 * (Y - 16)) - (0.392 * (Cb - 128)) - (0.813 * (Cr - 128));
 212  * B = (1.164 * (Y - 16)) + (2.017 * (Cb - 128);
 213  */
 214 static const struct ic_csc_params ic_csc_ycbcr2rgb = {
 215         .coeff = {
 216                 { 149, 0, 204 },
 217                 { 149, 462, 408 },
 218                 { 149, 255, 0 },
 219         },
 220         .offset = { -446, 266, -554 },
 221         .scale = 2,
 222 };
 223
 224 static int init_csc(struct ipu_ic *ic,
 225                     enum ipu_color_space inf,
 226                     enum ipu_color_space outf,
 227                     int csc_index)
 228 {
 229         struct ipu_ic_priv *priv = ic->priv;
 230         const struct ic_csc_params *params;
 231         u32 __iomem *base;
 232         const u16 (*c)[3];
 233         const u16 *a;
 234         u32 param;
 235
 236         base = (u32 __iomem *)
 237                 (priv->tpmem_base + ic->reg->tpmem_csc[csc_index]);
 238
 239         if (inf == IPUV3_COLORSPACE_YUV && outf == IPUV3_COLORSPACE_RGB)
 240                 params = &ic_csc_ycbcr2rgb;
 241         else if (inf == IPUV3_COLORSPACE_RGB && outf == IPUV3_COLORSPACE_YUV)
 242                 params = &ic_csc_rgb2ycbcr;
 243         else if (inf == IPUV3_COLORSPACE_RGB && outf == IPUV3_COLORSPACE_RGB)
 244                 params = &ic_csc_rgb2rgb;
 245         else {
 246                 dev_err(priv->ipu->dev, "Unsupported color space conversion\n");
 247                 return -EINVAL;
 248         }
 249
 250         /* Cast to unsigned */
 251         c = (const u16 (*)[3])params->coeff;
 252         a = (const u16 *)params->offset;
 253
 254         param = ((a[0] & 0x1f) << 27) | ((c[0][0] & 0x1ff) << 18) |
 255                 ((c[1][1] & 0x1ff) << 9) | (c[2][2] & 0x1ff);
 256         writel(param, base++);
 257
 258         param = ((a[0] & 0x1fe0) >> 5) | (params->scale << 8) |
 259                 (params->sat << 9);
 260         writel(param, base++);
 261
 262         param = ((a[1] & 0x1f) << 27) | ((c[0][1] & 0x1ff) << 18) |
 263                 ((c[1][0] & 0x1ff) << 9) | (c[2][0] & 0x1ff);
 264         writel(param, base++);
 265
 266         param = ((a[1] & 0x1fe0) >> 5);
 267         writel(param, base++);
 268
 269         param = ((a[2] & 0x1f) << 27) | ((c[0][2] & 0x1ff) << 18) |
 270                 ((c[1][2] & 0x1ff) << 9) | (c[2][1] & 0x1ff);
 271         writel(param, base++);
 272
 273         param = ((a[2] & 0x1fe0) >> 5);
 274         writel(param, base++);
 275
 276         return 0;
 277 }
 278
 279 static int calc_resize_coeffs(struct ipu_ic *ic,
 280                               u32 in_size, u32 out_size,
 281                               u32 *resize_coeff,
 282                               u32 *downsize_coeff)
 283 {
 284         struct ipu_ic_priv *priv = ic->priv;
 285         struct ipu_soc *ipu = priv->ipu;
 286         u32 temp_size, temp_downsize;
 287
 288         /*
 289          * Input size cannot be more than 4096, and output size cannot
 290          * be more than 1024
 291          */
 292         if (in_size > 4096) {
 293                 dev_err(ipu->dev, "Unsupported resize (in_size > 4096)\n");
 294                 return -EINVAL;
 295         }
 296         if (out_size > 1024) {
 297                 dev_err(ipu->dev, "Unsupported resize (out_size > 1024)\n");
 298                 return -EINVAL;
 299         }
 300
 301         /* Cannot downsize more than 4:1 */
 302         if ((out_size << 2) < in_size) {
 303                 dev_err(ipu->dev, "Unsupported downsize\n");
 304                 return -EINVAL;
 305         }
 306
 307         /* Compute downsizing coefficient */
 308         temp_downsize = 0;
 309         temp_size = in_size;
 310         while (((temp_size > 1024) || (temp_size >= out_size * 2)) &&
 311                (temp_downsize < 2)) {
 312                 temp_size >>= 1;
 313                 temp_downsize++;
 314         }
 315         *downsize_coeff = temp_downsize;
 316
 317         /*
 318          * compute resizing coefficient using the following equation:
 319          * resize_coeff = M * (SI - 1) / (SO - 1)
 320          * where M = 2^13, SI = input size, SO = output size
 321          */
 322         *resize_coeff = (8192L * (temp_size - 1)) / (out_size - 1);
 323         if (*resize_coeff >= 16384L) {
 324                 dev_err(ipu->dev, "Warning! Overflow on resize coeff.\n");
 325                 *resize_coeff = 0x3FFF;
 326         }
 327
 328         return 0;
 329 }
 330
 331 void ipu_ic_task_enable(struct ipu_ic *ic)
 332 {
 333         struct ipu_ic_priv *priv = ic->priv;
 334         unsigned long flags;
 335         u32 ic_conf;
 336
 337         spin_lock_irqsave(&priv->lock, flags);
 338
 339         ic_conf = ipu_ic_read(ic, IC_CONF);
 340
 341         ic_conf |= ic->bit->ic_conf_en;
 342
 343         if (ic->rotation)
 344                 ic_conf |= ic->bit->ic_conf_rot_en;
 345
 346         if (ic->in_cs != ic->out_cs)
 347                 ic_conf |= ic->bit->ic_conf_csc1_en;
 348
 349         if (ic->graphics) {
 350                 ic_conf |= ic->bit->ic_conf_cmb_en;
 351                 ic_conf |= ic->bit->ic_conf_csc1_en;
 352
 353                 if (ic->g_in_cs != ic->out_cs)
 354                         ic_conf |= ic->bit->ic_conf_csc2_en;
 355         }
 356
 357         ipu_ic_write(ic, ic_conf, IC_CONF);
 358
 359         spin_unlock_irqrestore(&priv->lock, flags);
 360 }
 361 EXPORT_SYMBOL_GPL(ipu_ic_task_enable);
 362
 363 void ipu_ic_task_disable(struct ipu_ic *ic)
 364 {
 365         struct ipu_ic_priv *priv = ic->priv;
 366         unsigned long flags;
 367         u32 ic_conf;
 368
 369         spin_lock_irqsave(&priv->lock, flags);
 370
 371         ic_conf = ipu_ic_read(ic, IC_CONF);
 372
 373         ic_conf &= ~(ic->bit->ic_conf_en |
 374                      ic->bit->ic_conf_csc1_en |
 375                      ic->bit->ic_conf_rot_en);
 376         if (ic->bit->ic_conf_csc2_en)
 377                 ic_conf &= ~ic->bit->ic_conf_csc2_en;
 378         if (ic->bit->ic_conf_cmb_en)
 379                 ic_conf &= ~ic->bit->ic_conf_cmb_en;
 380
 381         ipu_ic_write(ic, ic_conf, IC_CONF);
 382
 383         spin_unlock_irqrestore(&priv->lock, flags);
 384 }
 385 EXPORT_SYMBOL_GPL(ipu_ic_task_disable);
 386
 387 int ipu_ic_task_graphics_init(struct ipu_ic *ic,
 388                               enum ipu_color_space in_g_cs,
 389                               bool galpha_en, u32 galpha,
 390                               bool colorkey_en, u32 colorkey)
 391 {
 392         struct ipu_ic_priv *priv = ic->priv;
 393         unsigned long flags;
 394         u32 reg, ic_conf;
 395         int ret = 0;
 396
 397         if (ic->task == IC_TASK_ENCODER)
 398                 return -EINVAL;
 399
 400         spin_lock_irqsave(&priv->lock, flags);
 401
 402         ic_conf = ipu_ic_read(ic, IC_CONF);
 403
 404         if (!(ic_conf & ic->bit->ic_conf_csc1_en)) {
 405                 /* need transparent CSC1 conversion */
 406                 ret = init_csc(ic, IPUV3_COLORSPACE_RGB,
 407                                IPUV3_COLORSPACE_RGB, 0);
 408                 if (ret)
 409                         goto unlock;
 410         }
 411
 412         ic->g_in_cs = in_g_cs;
 413
 414         if (ic->g_in_cs != ic->out_cs) {
 415                 ret = init_csc(ic, ic->g_in_cs, ic->out_cs, 1);
 416                 if (ret)
 417                         goto unlock;
 418         }
 419
 420         if (galpha_en) {
 421                 ic_conf |= IC_CONF_IC_GLB_LOC_A;
 422                 reg = ipu_ic_read(ic, IC_CMBP_1);
 423                 reg &= ~(0xff << ic->bit->ic_cmb_galpha_bit);
 424                 reg |= (galpha << ic->bit->ic_cmb_galpha_bit);
 425                 ipu_ic_write(ic, reg, IC_CMBP_1);
 426         } else
 427                 ic_conf &= ~IC_CONF_IC_GLB_LOC_A;
 428
 429         if (colorkey_en) {
 430                 ic_conf |= IC_CONF_KEY_COLOR_EN;
 431                 ipu_ic_write(ic, colorkey, IC_CMBP_2);
 432         } else
 433                 ic_conf &= ~IC_CONF_KEY_COLOR_EN;
 434
 435         ipu_ic_write(ic, ic_conf, IC_CONF);
 436
 437         ic->graphics = true;
 438 unlock:
 439         spin_unlock_irqrestore(&priv->lock, flags);
 440         return ret;
 441 }
 442 EXPORT_SYMBOL_GPL(ipu_ic_task_graphics_init);
 443
 444 int ipu_ic_task_init(struct ipu_ic *ic,
 445                      int in_width, int in_height,
 446                      int out_width, int out_height,
 447                      enum ipu_color_space in_cs,
 448                      enum ipu_color_space out_cs)
 449 {
 450         struct ipu_ic_priv *priv = ic->priv;
 451         u32 reg, downsize_coeff, resize_coeff;
 452         unsigned long flags;
 453         int ret = 0;
 454
 455         /* Setup vertical resizing */
 456         ret = calc_resize_coeffs(ic, in_height, out_height,
 457                                  &resize_coeff, &downsize_coeff);
 458         if (ret)
 459                 return ret;
 460
 461         reg = (downsize_coeff << 30) | (resize_coeff << 16);
 462
 463         /* Setup horizontal resizing */
 464         ret = calc_resize_coeffs(ic, in_width, out_width,
 465                                  &resize_coeff, &downsize_coeff);
 466         if (ret)
 467                 return ret;
 468
 469         reg |= (downsize_coeff << 14) | resize_coeff;
 470
 471         spin_lock_irqsave(&priv->lock, flags);
 472
 473         ipu_ic_write(ic, reg, ic->reg->rsc);
 474
 475         /* Setup color space conversion */
 476         ic->in_cs = in_cs;
 477         ic->out_cs = out_cs;
 478
 479         if (ic->in_cs != ic->out_cs) {
 480                 ret = init_csc(ic, ic->in_cs, ic->out_cs, 0);
 481                 if (ret)
 482                         goto unlock;
 483         }
 484
 485 unlock:
 486         spin_unlock_irqrestore(&priv->lock, flags);
 487         return ret;
 488 }
 489 EXPORT_SYMBOL_GPL(ipu_ic_task_init);
 490
 491 int ipu_ic_task_idma_init(struct ipu_ic *ic, struct ipuv3_channel *channel,
 492                           u32 width, u32 height, int burst_size,
 493                           enum ipu_rotate_mode rot)
 494 {
 495         struct ipu_ic_priv *priv = ic->priv;
 496         struct ipu_soc *ipu = priv->ipu;
 497         u32 ic_idmac_1, ic_idmac_2, ic_idmac_3;
 498         u32 temp_rot = bitrev8(rot) >> 5;
 499         bool need_hor_flip = false;
 500         unsigned long flags;
 501         int ret = 0;
 502
 503         if ((burst_size != 8) && (burst_size != 16)) {
 504                 dev_err(ipu->dev, "Illegal burst length for IC\n");
 505                 return -EINVAL;
 506         }
 507
 508         width--;
 509         height--;
 510
 511         if (temp_rot & 0x2)     /* Need horizontal flip */
 512                 need_hor_flip = true;
 513
 514         spin_lock_irqsave(&priv->lock, flags);
 515
 516         ic_idmac_1 = ipu_ic_read(ic, IC_IDMAC_1);
 517         ic_idmac_2 = ipu_ic_read(ic, IC_IDMAC_2);
 518         ic_idmac_3 = ipu_ic_read(ic, IC_IDMAC_3);
 519
 520         switch (channel->num) {
 521         case IPUV3_CHANNEL_IC_PP_MEM:
 522                 if (burst_size == 16)
 523                         ic_idmac_1 |= IC_IDMAC_1_CB2_BURST_16;
 524                 else
 525                         ic_idmac_1 &= ~IC_IDMAC_1_CB2_BURST_16;
 526
 527                 if (need_hor_flip)
 528                         ic_idmac_1 |= IC_IDMAC_1_PP_FLIP_RS;
 529                 else
 530                         ic_idmac_1 &= ~IC_IDMAC_1_PP_FLIP_RS;
 531
 532                 ic_idmac_2 &= ~IC_IDMAC_2_PP_HEIGHT_MASK;
 533                 ic_idmac_2 |= height << IC_IDMAC_2_PP_HEIGHT_OFFSET;
 534
 535                 ic_idmac_3 &= ~IC_IDMAC_3_PP_WIDTH_MASK;
 536                 ic_idmac_3 |= width << IC_IDMAC_3_PP_WIDTH_OFFSET;
 537                 break;
 538         case IPUV3_CHANNEL_MEM_IC_PP:
 539                 if (burst_size == 16)
 540                         ic_idmac_1 |= IC_IDMAC_1_CB5_BURST_16;
 541                 else
 542                         ic_idmac_1 &= ~IC_IDMAC_1_CB5_BURST_16;
 543                 break;
 544         case IPUV3_CHANNEL_MEM_ROT_PP:
 545                 ic_idmac_1 &= ~IC_IDMAC_1_PP_ROT_MASK;
 546                 ic_idmac_1 |= temp_rot << IC_IDMAC_1_PP_ROT_OFFSET;
 547                 break;
 548         case IPUV3_CHANNEL_MEM_IC_PRP_VF:
 549                 if (burst_size == 16)
 550                         ic_idmac_1 |= IC_IDMAC_1_CB6_BURST_16;
 551                 else
 552                         ic_idmac_1 &= ~IC_IDMAC_1_CB6_BURST_16;
 553                 break;
 554         case IPUV3_CHANNEL_IC_PRP_ENC_MEM:
 555                 if (burst_size == 16)
 556                         ic_idmac_1 |= IC_IDMAC_1_CB0_BURST_16;
 557                 else
 558                         ic_idmac_1 &= ~IC_IDMAC_1_CB0_BURST_16;
 559
 560                 if (need_hor_flip)
 561                         ic_idmac_1 |= IC_IDMAC_1_PRPENC_FLIP_RS;
 562                 else
 563                         ic_idmac_1 &= ~IC_IDMAC_1_PRPENC_FLIP_RS;
 564
 565                 ic_idmac_2 &= ~IC_IDMAC_2_PRPENC_HEIGHT_MASK;
 566                 ic_idmac_2 |= height << IC_IDMAC_2_PRPENC_HEIGHT_OFFSET;
 567
 568                 ic_idmac_3 &= ~IC_IDMAC_3_PRPENC_WIDTH_MASK;
 569                 ic_idmac_3 |= width << IC_IDMAC_3_PRPENC_WIDTH_OFFSET;
 570                 break;
 571         case IPUV3_CHANNEL_MEM_ROT_ENC:
 572                 ic_idmac_1 &= ~IC_IDMAC_1_PRPENC_ROT_MASK;
 573                 ic_idmac_1 |= temp_rot << IC_IDMAC_1_PRPENC_ROT_OFFSET;
 574                 break;
 575         case IPUV3_CHANNEL_IC_PRP_VF_MEM:
 576                 if (burst_size == 16)
 577                         ic_idmac_1 |= IC_IDMAC_1_CB1_BURST_16;
 578                 else
 579                         ic_idmac_1 &= ~IC_IDMAC_1_CB1_BURST_16;
 580
 581                 if (need_hor_flip)
 582                         ic_idmac_1 |= IC_IDMAC_1_PRPVF_FLIP_RS;
 583                 else
 584                         ic_idmac_1 &= ~IC_IDMAC_1_PRPVF_FLIP_RS;
 585
 586                 ic_idmac_2 &= ~IC_IDMAC_2_PRPVF_HEIGHT_MASK;
 587                 ic_idmac_2 |= height << IC_IDMAC_2_PRPVF_HEIGHT_OFFSET;
 588
 589                 ic_idmac_3 &= ~IC_IDMAC_3_PRPVF_WIDTH_MASK;
 590                 ic_idmac_3 |= width << IC_IDMAC_3_PRPVF_WIDTH_OFFSET;
 591                 break;
 592         case IPUV3_CHANNEL_MEM_ROT_VF:
 593                 ic_idmac_1 &= ~IC_IDMAC_1_PRPVF_ROT_MASK;
 594                 ic_idmac_1 |= temp_rot << IC_IDMAC_1_PRPVF_ROT_OFFSET;
 595                 break;
 596         case IPUV3_CHANNEL_G_MEM_IC_PRP_VF:
 597                 if (burst_size == 16)
 598                         ic_idmac_1 |= IC_IDMAC_1_CB3_BURST_16;
 599                 else
 600                         ic_idmac_1 &= ~IC_IDMAC_1_CB3_BURST_16;
 601                 break;
 602         case IPUV3_CHANNEL_G_MEM_IC_PP:
 603                 if (burst_size == 16)
 604                         ic_idmac_1 |= IC_IDMAC_1_CB4_BURST_16;
 605                 else
 606                         ic_idmac_1 &= ~IC_IDMAC_1_CB4_BURST_16;
 607                 break;
 608         case IPUV3_CHANNEL_VDI_MEM_IC_VF:
 609                 if (burst_size == 16)
 610                         ic_idmac_1 |= IC_IDMAC_1_CB7_BURST_16;
 611                 else
 612                         ic_idmac_1 &= ~IC_IDMAC_1_CB7_BURST_16;
 613                 break;
 614         default:
 615                 goto unlock;
 616         }
 617
 618         ipu_ic_write(ic, ic_idmac_1, IC_IDMAC_1);
 619         ipu_ic_write(ic, ic_idmac_2, IC_IDMAC_2);
 620         ipu_ic_write(ic, ic_idmac_3, IC_IDMAC_3);
 621
 622         if (ipu_rot_mode_is_irt(rot))
 623                 ic->rotation = true;
 624
 625 unlock:
 626         spin_unlock_irqrestore(&priv->lock, flags);
 627         return ret;
 628 }
 629 EXPORT_SYMBOL_GPL(ipu_ic_task_idma_init);
 630
 631 static void ipu_irt_enable(struct ipu_ic *ic)
 632 {
 633         struct ipu_ic_priv *priv = ic->priv;
 634
 635         if (!priv->irt_use_count)
 636                 ipu_module_enable(priv->ipu, IPU_CONF_ROT_EN);
 637
 638         priv->irt_use_count++;
 639 }
 640
 641 static void ipu_irt_disable(struct ipu_ic *ic)
 642 {
 643         struct ipu_ic_priv *priv = ic->priv;
 644
 645         if (priv->irt_use_count) {
 646                 if (!--priv->irt_use_count)
 647                         ipu_module_disable(priv->ipu, IPU_CONF_ROT_EN);
 648         }
 649 }
 650
 651 int ipu_ic_enable(struct ipu_ic *ic)
 652 {
 653         struct ipu_ic_priv *priv = ic->priv;
 654         unsigned long flags;
 655
 656         spin_lock_irqsave(&priv->lock, flags);
 657
 658         if (!priv->use_count)
 659                 ipu_module_enable(priv->ipu, IPU_CONF_IC_EN);
 660
 661         priv->use_count++;
 662
 663         if (ic->rotation)
 664                 ipu_irt_enable(ic);
 665
 666         spin_unlock_irqrestore(&priv->lock, flags);
 667
 668         return 0;
 669 }
 670 EXPORT_SYMBOL_GPL(ipu_ic_enable);
 671
 672 int ipu_ic_disable(struct ipu_ic *ic)
 673 {
 674         struct ipu_ic_priv *priv = ic->priv;
 675         unsigned long flags;
 676
 677         spin_lock_irqsave(&priv->lock, flags);
 678
 679         priv->use_count--;
 680
 681         if (!priv->use_count)
 682                 ipu_module_disable(priv->ipu, IPU_CONF_IC_EN);
 683
 684         if (priv->use_count < 0)
 685                 priv->use_count = 0;
 686
 687         if (ic->rotation)
 688                 ipu_irt_disable(ic);
 689
 690         ic->rotation = ic->graphics = false;
 691
 692         spin_unlock_irqrestore(&priv->lock, flags);
 693
 694         return 0;
 695 }
 696 EXPORT_SYMBOL_GPL(ipu_ic_disable);
 697
 698 struct ipu_ic *ipu_ic_get(struct ipu_soc *ipu, enum ipu_ic_task task)
 699 {
 700         struct ipu_ic_priv *priv = ipu->ic_priv;
 701         unsigned long flags;
 702         struct ipu_ic *ic, *ret;
 703
 704         if (task >= IC_NUM_TASKS)
 705                 return ERR_PTR(-EINVAL);
 706
 707         ic = &priv->task[task];
 708
 709         spin_lock_irqsave(&priv->lock, flags);
 710
 711         if (ic->in_use) {
 712                 ret = ERR_PTR(-EBUSY);
 713                 goto unlock;
 714         }
 715
 716         ic->in_use = true;
 717         ret = ic;
 718
 719 unlock:
 720         spin_unlock_irqrestore(&priv->lock, flags);
 721         return ret;
 722 }
 723 EXPORT_SYMBOL_GPL(ipu_ic_get);
 724
 725 void ipu_ic_put(struct ipu_ic *ic)
 726 {
 727         struct ipu_ic_priv *priv = ic->priv;
 728         unsigned long flags;
 729
 730         spin_lock_irqsave(&priv->lock, flags);
 731         ic->in_use = false;
 732         spin_unlock_irqrestore(&priv->lock, flags);
 733 }
 734 EXPORT_SYMBOL_GPL(ipu_ic_put);
 735
 736 int ipu_ic_init(struct ipu_soc *ipu, struct device *dev,
 737                 unsigned long base, unsigned long tpmem_base)
 738 {
 739         struct ipu_ic_priv *priv;
 740         int i;
 741
 742         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 743         if (!priv)
 744                 return -ENOMEM;
 745
 746         ipu->ic_priv = priv;
 747
 748         spin_lock_init(&priv->lock);
 749         priv->base = devm_ioremap(dev, base, PAGE_SIZE);
 750         if (!priv->base)
 751                 return -ENOMEM;
 752         priv->tpmem_base = devm_ioremap(dev, tpmem_base, SZ_64K);
 753         if (!priv->tpmem_base)
 754                 return -ENOMEM;
 755
 756         dev_dbg(dev, "IC base: 0x%08lx remapped to %p\n", base, priv->base);
 757
 758         priv->ipu = ipu;
 759
 760         for (i = 0; i < IC_NUM_TASKS; i++) {
 761                 priv->task[i].task = i;
 762                 priv->task[i].priv = priv;
 763                 priv->task[i].reg = &ic_task_reg[i];
 764                 priv->task[i].bit = &ic_task_bit[i];
 765         }
 766
 767         return 0;
 768 }
 769
 770 void ipu_ic_exit(struct ipu_soc *ipu)
 771 {
 772 }
 773
 774 void ipu_ic_dump(struct ipu_ic *ic)
 775 {
 776         struct ipu_ic_priv *priv = ic->priv;
 777         struct ipu_soc *ipu = priv->ipu;
 778
 779         dev_dbg(ipu->dev, "IC_CONF = \t0x%08X\n",
 780                 ipu_ic_read(ic, IC_CONF));
 781         dev_dbg(ipu->dev, "IC_PRP_ENC_RSC = \t0x%08X\n",
 782                 ipu_ic_read(ic, IC_PRP_ENC_RSC));
 783         dev_dbg(ipu->dev, "IC_PRP_VF_RSC = \t0x%08X\n",
 784                 ipu_ic_read(ic, IC_PRP_VF_RSC));
 785         dev_dbg(ipu->dev, "IC_PP_RSC = \t0x%08X\n",
 786                 ipu_ic_read(ic, IC_PP_RSC));
 787         dev_dbg(ipu->dev, "IC_CMBP_1 = \t0x%08X\n",
 788                 ipu_ic_read(ic, IC_CMBP_1));
 789         dev_dbg(ipu->dev, "IC_CMBP_2 = \t0x%08X\n",
 790                 ipu_ic_read(ic, IC_CMBP_2));
 791         dev_dbg(ipu->dev, "IC_IDMAC_1 = \t0x%08X\n",
 792                 ipu_ic_read(ic, IC_IDMAC_1));
 793         dev_dbg(ipu->dev, "IC_IDMAC_2 = \t0x%08X\n",
 794                 ipu_ic_read(ic, IC_IDMAC_2));
 795         dev_dbg(ipu->dev, "IC_IDMAC_3 = \t0x%08X\n",
 796                 ipu_ic_read(ic, IC_IDMAC_3));
 797         dev_dbg(ipu->dev, "IC_IDMAC_4 = \t0x%08X\n",
 798                 ipu_ic_read(ic, IC_IDMAC_4));
 799 }
 800 EXPORT_SYMBOL_GPL(ipu_ic_dump);