drivers/video/omap2/dss/dispc.c

   1 /*
   2  * linux/drivers/video/omap2/dss/dispc.c
   3  *
   4  * Copyright (C) 2009 Nokia Corporation
   5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   6  *
   7  * Some code and ideas taken from drivers/video/omap/ driver
   8  * by Imre Deak.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published by
  12  * the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #define DSS_SUBSYS_NAME "DISPC"
  24
  25 #include <linux/kernel.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/vmalloc.h>
  28 #include <linux/clk.h>
  29 #include <linux/io.h>
  30 #include <linux/jiffies.h>
  31 #include <linux/seq_file.h>
  32 #include <linux/delay.h>
  33 #include <linux/workqueue.h>
  34 #include <linux/hardirq.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/platform_device.h>
  37 #include <linux/pm_runtime.h>
  38
  39 #include <plat/sram.h>
  40 #include <plat/clock.h>
  41
  42 #include <video/omapdss.h>
  43
  44 #include "dss.h"
  45 #include "dss_features.h"
  46 #include "dispc.h"
  47
  48 /* DISPC */
  49 #define DISPC_SZ_REGS                   SZ_4K
  50
  51 #define DISPC_IRQ_MASK_ERROR            (DISPC_IRQ_GFX_FIFO_UNDERFLOW | \
  52                                          DISPC_IRQ_OCP_ERR | \
  53                                          DISPC_IRQ_VID1_FIFO_UNDERFLOW | \
  54                                          DISPC_IRQ_VID2_FIFO_UNDERFLOW | \
  55                                          DISPC_IRQ_SYNC_LOST | \
  56                                          DISPC_IRQ_SYNC_LOST_DIGIT)
  57
  58 #define DISPC_MAX_NR_ISRS               8
  59
  60 struct omap_dispc_isr_data {
  61         omap_dispc_isr_t        isr;
  62         void                    *arg;
  63         u32                     mask;
  64 };
  65
  66 struct dispc_h_coef {
  67         s8 hc4;
  68         s8 hc3;
  69         u8 hc2;
  70         s8 hc1;
  71         s8 hc0;
  72 };
  73
  74 struct dispc_v_coef {
  75         s8 vc22;
  76         s8 vc2;
  77         u8 vc1;
  78         s8 vc0;
  79         s8 vc00;
  80 };
  81
  82 enum omap_burst_size {
  83         BURST_SIZE_X2 = 0,
  84         BURST_SIZE_X4 = 1,
  85         BURST_SIZE_X8 = 2,
  86 };
  87
  88 #define REG_GET(idx, start, end) \
  89         FLD_GET(dispc_read_reg(idx), start, end)
  90
  91 #define REG_FLD_MOD(idx, val, start, end)                               \
  92         dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end))
  93
  94 struct dispc_irq_stats {
  95         unsigned long last_reset;
  96         unsigned irq_count;
  97         unsigned irqs[32];
  98 };
  99
 100 static struct {
 101         struct platform_device *pdev;
 102         void __iomem    *base;
 103
 104         int             ctx_loss_cnt;
 105
 106         int irq;
 107         struct clk *dss_clk;
 108
 109         u32     fifo_size[3];
 110
 111         spinlock_t irq_lock;
 112         u32 irq_error_mask;
 113         struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
 114         u32 error_irqs;
 115         struct work_struct error_work;
 116
 117         bool            ctx_valid;
 118         u32             ctx[DISPC_SZ_REGS / sizeof(u32)];
 119
 120 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
 121         spinlock_t irq_stats_lock;
 122         struct dispc_irq_stats irq_stats;
 123 #endif
 124 } dispc;
 125
 126 enum omap_color_component {
 127         /* used for all color formats for OMAP3 and earlier
 128          * and for RGB and Y color component on OMAP4
 129          */
 130         DISPC_COLOR_COMPONENT_RGB_Y             = 1 << 0,
 131         /* used for UV component for
 132          * OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12
 133          * color formats on OMAP4
 134          */
 135         DISPC_COLOR_COMPONENT_UV                = 1 << 1,
 136 };
 137
 138 static void _omap_dispc_set_irqs(void);
 139
 140 static inline void dispc_write_reg(const u16 idx, u32 val)
 141 {
 142         __raw_writel(val, dispc.base + idx);
 143 }
 144
 145 static inline u32 dispc_read_reg(const u16 idx)
 146 {
 147         return __raw_readl(dispc.base + idx);
 148 }
 149
 150 static int dispc_get_ctx_loss_count(void)
 151 {
 152         struct device *dev = &dispc.pdev->dev;
 153         struct omap_display_platform_data *pdata = dev->platform_data;
 154         struct omap_dss_board_info *board_data = pdata->board_data;
 155         int cnt;
 156
 157         if (!board_data->get_context_loss_count)
 158                 return -ENOENT;
 159
 160         cnt = board_data->get_context_loss_count(dev);
 161
 162         WARN_ONCE(cnt < 0, "get_context_loss_count failed: %d\n", cnt);
 163
 164         return cnt;
 165 }
 166
 167 #define SR(reg) \
 168         dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg)
 169 #define RR(reg) \
 170         dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)])
 171
 172 static void dispc_save_context(void)
 173 {
 174         int i;
 175
 176         DSSDBG("dispc_save_context\n");
 177
 178         SR(IRQENABLE);
 179         SR(CONTROL);
 180         SR(CONFIG);
 181         SR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_LCD));
 182         SR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_DIGIT));
 183         SR(TRANS_COLOR(OMAP_DSS_CHANNEL_LCD));
 184         SR(TRANS_COLOR(OMAP_DSS_CHANNEL_DIGIT));
 185         SR(LINE_NUMBER);
 186         SR(TIMING_H(OMAP_DSS_CHANNEL_LCD));
 187         SR(TIMING_V(OMAP_DSS_CHANNEL_LCD));
 188         SR(POL_FREQ(OMAP_DSS_CHANNEL_LCD));
 189         SR(DIVISORo(OMAP_DSS_CHANNEL_LCD));
 190         if (dss_has_feature(FEAT_GLOBAL_ALPHA))
 191                 SR(GLOBAL_ALPHA);
 192         SR(SIZE_MGR(OMAP_DSS_CHANNEL_DIGIT));
 193         SR(SIZE_MGR(OMAP_DSS_CHANNEL_LCD));
 194         if (dss_has_feature(FEAT_MGR_LCD2)) {
 195                 SR(CONTROL2);
 196                 SR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_LCD2));
 197                 SR(TRANS_COLOR(OMAP_DSS_CHANNEL_LCD2));
 198                 SR(SIZE_MGR(OMAP_DSS_CHANNEL_LCD2));
 199                 SR(TIMING_H(OMAP_DSS_CHANNEL_LCD2));
 200                 SR(TIMING_V(OMAP_DSS_CHANNEL_LCD2));
 201                 SR(POL_FREQ(OMAP_DSS_CHANNEL_LCD2));
 202                 SR(DIVISORo(OMAP_DSS_CHANNEL_LCD2));
 203                 SR(CONFIG2);
 204         }
 205
 206         SR(OVL_BA0(OMAP_DSS_GFX));
 207         SR(OVL_BA1(OMAP_DSS_GFX));
 208         SR(OVL_POSITION(OMAP_DSS_GFX));
 209         SR(OVL_SIZE(OMAP_DSS_GFX));
 210         SR(OVL_ATTRIBUTES(OMAP_DSS_GFX));
 211         SR(OVL_FIFO_THRESHOLD(OMAP_DSS_GFX));
 212         SR(OVL_ROW_INC(OMAP_DSS_GFX));
 213         SR(OVL_PIXEL_INC(OMAP_DSS_GFX));
 214         SR(OVL_WINDOW_SKIP(OMAP_DSS_GFX));
 215         SR(OVL_TABLE_BA(OMAP_DSS_GFX));
 216
 217         SR(DATA_CYCLE1(OMAP_DSS_CHANNEL_LCD));
 218         SR(DATA_CYCLE2(OMAP_DSS_CHANNEL_LCD));
 219         SR(DATA_CYCLE3(OMAP_DSS_CHANNEL_LCD));
 220
 221         if (dss_has_feature(FEAT_CPR)) {
 222                 SR(CPR_COEF_R(OMAP_DSS_CHANNEL_LCD));
 223                 SR(CPR_COEF_G(OMAP_DSS_CHANNEL_LCD));
 224                 SR(CPR_COEF_B(OMAP_DSS_CHANNEL_LCD));
 225         }
 226         if (dss_has_feature(FEAT_MGR_LCD2)) {
 227                 if (dss_has_feature(FEAT_CPR)) {
 228                         SR(CPR_COEF_B(OMAP_DSS_CHANNEL_LCD2));
 229                         SR(CPR_COEF_G(OMAP_DSS_CHANNEL_LCD2));
 230                         SR(CPR_COEF_R(OMAP_DSS_CHANNEL_LCD2));
 231                 }
 232
 233                 SR(DATA_CYCLE1(OMAP_DSS_CHANNEL_LCD2));
 234                 SR(DATA_CYCLE2(OMAP_DSS_CHANNEL_LCD2));
 235                 SR(DATA_CYCLE3(OMAP_DSS_CHANNEL_LCD2));
 236         }
 237
 238         if (dss_has_feature(FEAT_PRELOAD))
 239                 SR(OVL_PRELOAD(OMAP_DSS_GFX));
 240
 241         /* VID1 */
 242         SR(OVL_BA0(OMAP_DSS_VIDEO1));
 243         SR(OVL_BA1(OMAP_DSS_VIDEO1));
 244         SR(OVL_POSITION(OMAP_DSS_VIDEO1));
 245         SR(OVL_SIZE(OMAP_DSS_VIDEO1));
 246         SR(OVL_ATTRIBUTES(OMAP_DSS_VIDEO1));
 247         SR(OVL_FIFO_THRESHOLD(OMAP_DSS_VIDEO1));
 248         SR(OVL_ROW_INC(OMAP_DSS_VIDEO1));
 249         SR(OVL_PIXEL_INC(OMAP_DSS_VIDEO1));
 250         SR(OVL_FIR(OMAP_DSS_VIDEO1));
 251         SR(OVL_PICTURE_SIZE(OMAP_DSS_VIDEO1));
 252         SR(OVL_ACCU0(OMAP_DSS_VIDEO1));
 253         SR(OVL_ACCU1(OMAP_DSS_VIDEO1));
 254
 255         for (i = 0; i < 8; i++)
 256                 SR(OVL_FIR_COEF_H(OMAP_DSS_VIDEO1, i));
 257
 258         for (i = 0; i < 8; i++)
 259                 SR(OVL_FIR_COEF_HV(OMAP_DSS_VIDEO1, i));
 260
 261         for (i = 0; i < 5; i++)
 262                 SR(OVL_CONV_COEF(OMAP_DSS_VIDEO1, i));
 263
 264         if (dss_has_feature(FEAT_FIR_COEF_V)) {
 265                 for (i = 0; i < 8; i++)
 266                         SR(OVL_FIR_COEF_V(OMAP_DSS_VIDEO1, i));
 267         }
 268
 269         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
 270                 SR(OVL_BA0_UV(OMAP_DSS_VIDEO1));
 271                 SR(OVL_BA1_UV(OMAP_DSS_VIDEO1));
 272                 SR(OVL_FIR2(OMAP_DSS_VIDEO1));
 273                 SR(OVL_ACCU2_0(OMAP_DSS_VIDEO1));
 274                 SR(OVL_ACCU2_1(OMAP_DSS_VIDEO1));
 275
 276                 for (i = 0; i < 8; i++)
 277                         SR(OVL_FIR_COEF_H2(OMAP_DSS_VIDEO1, i));
 278
 279                 for (i = 0; i < 8; i++)
 280                         SR(OVL_FIR_COEF_HV2(OMAP_DSS_VIDEO1, i));
 281
 282                 for (i = 0; i < 8; i++)
 283                         SR(OVL_FIR_COEF_V2(OMAP_DSS_VIDEO1, i));
 284         }
 285         if (dss_has_feature(FEAT_ATTR2))
 286                 SR(OVL_ATTRIBUTES2(OMAP_DSS_VIDEO1));
 287
 288         if (dss_has_feature(FEAT_PRELOAD))
 289                 SR(OVL_PRELOAD(OMAP_DSS_VIDEO1));
 290
 291         /* VID2 */
 292         SR(OVL_BA0(OMAP_DSS_VIDEO2));
 293         SR(OVL_BA1(OMAP_DSS_VIDEO2));
 294         SR(OVL_POSITION(OMAP_DSS_VIDEO2));
 295         SR(OVL_SIZE(OMAP_DSS_VIDEO2));
 296         SR(OVL_ATTRIBUTES(OMAP_DSS_VIDEO2));
 297         SR(OVL_FIFO_THRESHOLD(OMAP_DSS_VIDEO2));
 298         SR(OVL_ROW_INC(OMAP_DSS_VIDEO2));
 299         SR(OVL_PIXEL_INC(OMAP_DSS_VIDEO2));
 300         SR(OVL_FIR(OMAP_DSS_VIDEO2));
 301         SR(OVL_PICTURE_SIZE(OMAP_DSS_VIDEO2));
 302         SR(OVL_ACCU0(OMAP_DSS_VIDEO2));
 303         SR(OVL_ACCU1(OMAP_DSS_VIDEO2));
 304
 305         for (i = 0; i < 8; i++)
 306                 SR(OVL_FIR_COEF_H(OMAP_DSS_VIDEO2, i));
 307
 308         for (i = 0; i < 8; i++)
 309                 SR(OVL_FIR_COEF_HV(OMAP_DSS_VIDEO2, i));
 310
 311         for (i = 0; i < 5; i++)
 312                 SR(OVL_CONV_COEF(OMAP_DSS_VIDEO2, i));
 313
 314         if (dss_has_feature(FEAT_FIR_COEF_V)) {
 315                 for (i = 0; i < 8; i++)
 316                         SR(OVL_FIR_COEF_V(OMAP_DSS_VIDEO2, i));
 317         }
 318
 319         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
 320                 SR(OVL_BA0_UV(OMAP_DSS_VIDEO2));
 321                 SR(OVL_BA1_UV(OMAP_DSS_VIDEO2));
 322                 SR(OVL_FIR2(OMAP_DSS_VIDEO2));
 323                 SR(OVL_ACCU2_0(OMAP_DSS_VIDEO2));
 324                 SR(OVL_ACCU2_1(OMAP_DSS_VIDEO2));
 325
 326                 for (i = 0; i < 8; i++)
 327                         SR(OVL_FIR_COEF_H2(OMAP_DSS_VIDEO2, i));
 328
 329                 for (i = 0; i < 8; i++)
 330                         SR(OVL_FIR_COEF_HV2(OMAP_DSS_VIDEO2, i));
 331
 332                 for (i = 0; i < 8; i++)
 333                         SR(OVL_FIR_COEF_V2(OMAP_DSS_VIDEO2, i));
 334         }
 335         if (dss_has_feature(FEAT_ATTR2))
 336                 SR(OVL_ATTRIBUTES2(OMAP_DSS_VIDEO2));
 337
 338         if (dss_has_feature(FEAT_PRELOAD))
 339                 SR(OVL_PRELOAD(OMAP_DSS_VIDEO2));
 340
 341         if (dss_has_feature(FEAT_CORE_CLK_DIV))
 342                 SR(DIVISOR);
 343
 344         dispc.ctx_loss_cnt = dispc_get_ctx_loss_count();
 345         dispc.ctx_valid = true;
 346
 347         DSSDBG("context saved, ctx_loss_count %d\n", dispc.ctx_loss_cnt);
 348 }
 349
 350 static void dispc_restore_context(void)
 351 {
 352         int i, ctx;
 353
 354         DSSDBG("dispc_restore_context\n");
 355
 356         if (!dispc.ctx_valid)
 357                 return;
 358
 359         ctx = dispc_get_ctx_loss_count();
 360
 361         if (ctx >= 0 && ctx == dispc.ctx_loss_cnt)
 362                 return;
 363
 364         DSSDBG("ctx_loss_count: saved %d, current %d\n",
 365                         dispc.ctx_loss_cnt, ctx);
 366
 367         /*RR(IRQENABLE);*/
 368         /*RR(CONTROL);*/
 369         RR(CONFIG);
 370         RR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_LCD));
 371         RR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_DIGIT));
 372         RR(TRANS_COLOR(OMAP_DSS_CHANNEL_LCD));
 373         RR(TRANS_COLOR(OMAP_DSS_CHANNEL_DIGIT));
 374         RR(LINE_NUMBER);
 375         RR(TIMING_H(OMAP_DSS_CHANNEL_LCD));
 376         RR(TIMING_V(OMAP_DSS_CHANNEL_LCD));
 377         RR(POL_FREQ(OMAP_DSS_CHANNEL_LCD));
 378         RR(DIVISORo(OMAP_DSS_CHANNEL_LCD));
 379         if (dss_has_feature(FEAT_GLOBAL_ALPHA))
 380                 RR(GLOBAL_ALPHA);
 381         RR(SIZE_MGR(OMAP_DSS_CHANNEL_DIGIT));
 382         RR(SIZE_MGR(OMAP_DSS_CHANNEL_LCD));
 383         if (dss_has_feature(FEAT_MGR_LCD2)) {
 384                 RR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_LCD2));
 385                 RR(TRANS_COLOR(OMAP_DSS_CHANNEL_LCD2));
 386                 RR(SIZE_MGR(OMAP_DSS_CHANNEL_LCD2));
 387                 RR(TIMING_H(OMAP_DSS_CHANNEL_LCD2));
 388                 RR(TIMING_V(OMAP_DSS_CHANNEL_LCD2));
 389                 RR(POL_FREQ(OMAP_DSS_CHANNEL_LCD2));
 390                 RR(DIVISORo(OMAP_DSS_CHANNEL_LCD2));
 391                 RR(CONFIG2);
 392         }
 393
 394         RR(OVL_BA0(OMAP_DSS_GFX));
 395         RR(OVL_BA1(OMAP_DSS_GFX));
 396         RR(OVL_POSITION(OMAP_DSS_GFX));
 397         RR(OVL_SIZE(OMAP_DSS_GFX));
 398         RR(OVL_ATTRIBUTES(OMAP_DSS_GFX));
 399         RR(OVL_FIFO_THRESHOLD(OMAP_DSS_GFX));
 400         RR(OVL_ROW_INC(OMAP_DSS_GFX));
 401         RR(OVL_PIXEL_INC(OMAP_DSS_GFX));
 402         RR(OVL_WINDOW_SKIP(OMAP_DSS_GFX));
 403         RR(OVL_TABLE_BA(OMAP_DSS_GFX));
 404
 405
 406         RR(DATA_CYCLE1(OMAP_DSS_CHANNEL_LCD));
 407         RR(DATA_CYCLE2(OMAP_DSS_CHANNEL_LCD));
 408         RR(DATA_CYCLE3(OMAP_DSS_CHANNEL_LCD));
 409
 410         if (dss_has_feature(FEAT_CPR)) {
 411                 RR(CPR_COEF_R(OMAP_DSS_CHANNEL_LCD));
 412                 RR(CPR_COEF_G(OMAP_DSS_CHANNEL_LCD));
 413                 RR(CPR_COEF_B(OMAP_DSS_CHANNEL_LCD));
 414         }
 415         if (dss_has_feature(FEAT_MGR_LCD2)) {
 416                 RR(DATA_CYCLE1(OMAP_DSS_CHANNEL_LCD2));
 417                 RR(DATA_CYCLE2(OMAP_DSS_CHANNEL_LCD2));
 418                 RR(DATA_CYCLE3(OMAP_DSS_CHANNEL_LCD2));
 419
 420                 if (dss_has_feature(FEAT_CPR)) {
 421                         RR(CPR_COEF_B(OMAP_DSS_CHANNEL_LCD2));
 422                         RR(CPR_COEF_G(OMAP_DSS_CHANNEL_LCD2));
 423                         RR(CPR_COEF_R(OMAP_DSS_CHANNEL_LCD2));
 424                 }
 425         }
 426
 427         if (dss_has_feature(FEAT_PRELOAD))
 428                 RR(OVL_PRELOAD(OMAP_DSS_GFX));
 429
 430         /* VID1 */
 431         RR(OVL_BA0(OMAP_DSS_VIDEO1));
 432         RR(OVL_BA1(OMAP_DSS_VIDEO1));
 433         RR(OVL_POSITION(OMAP_DSS_VIDEO1));
 434         RR(OVL_SIZE(OMAP_DSS_VIDEO1));
 435         RR(OVL_ATTRIBUTES(OMAP_DSS_VIDEO1));
 436         RR(OVL_FIFO_THRESHOLD(OMAP_DSS_VIDEO1));
 437         RR(OVL_ROW_INC(OMAP_DSS_VIDEO1));
 438         RR(OVL_PIXEL_INC(OMAP_DSS_VIDEO1));
 439         RR(OVL_FIR(OMAP_DSS_VIDEO1));
 440         RR(OVL_PICTURE_SIZE(OMAP_DSS_VIDEO1));
 441         RR(OVL_ACCU0(OMAP_DSS_VIDEO1));
 442         RR(OVL_ACCU1(OMAP_DSS_VIDEO1));
 443
 444         for (i = 0; i < 8; i++)
 445                 RR(OVL_FIR_COEF_H(OMAP_DSS_VIDEO1, i));
 446
 447         for (i = 0; i < 8; i++)
 448                 RR(OVL_FIR_COEF_HV(OMAP_DSS_VIDEO1, i));
 449
 450         for (i = 0; i < 5; i++)
 451                 RR(OVL_CONV_COEF(OMAP_DSS_VIDEO1, i));
 452
 453         if (dss_has_feature(FEAT_FIR_COEF_V)) {
 454                 for (i = 0; i < 8; i++)
 455                         RR(OVL_FIR_COEF_V(OMAP_DSS_VIDEO1, i));
 456         }
 457
 458         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
 459                 RR(OVL_BA0_UV(OMAP_DSS_VIDEO1));
 460                 RR(OVL_BA1_UV(OMAP_DSS_VIDEO1));
 461                 RR(OVL_FIR2(OMAP_DSS_VIDEO1));
 462                 RR(OVL_ACCU2_0(OMAP_DSS_VIDEO1));
 463                 RR(OVL_ACCU2_1(OMAP_DSS_VIDEO1));
 464
 465                 for (i = 0; i < 8; i++)
 466                         RR(OVL_FIR_COEF_H2(OMAP_DSS_VIDEO1, i));
 467
 468                 for (i = 0; i < 8; i++)
 469                         RR(OVL_FIR_COEF_HV2(OMAP_DSS_VIDEO1, i));
 470
 471                 for (i = 0; i < 8; i++)
 472                         RR(OVL_FIR_COEF_V2(OMAP_DSS_VIDEO1, i));
 473         }
 474         if (dss_has_feature(FEAT_ATTR2))
 475                 RR(OVL_ATTRIBUTES2(OMAP_DSS_VIDEO1));
 476
 477         if (dss_has_feature(FEAT_PRELOAD))
 478                 RR(OVL_PRELOAD(OMAP_DSS_VIDEO1));
 479
 480         /* VID2 */
 481         RR(OVL_BA0(OMAP_DSS_VIDEO2));
 482         RR(OVL_BA1(OMAP_DSS_VIDEO2));
 483         RR(OVL_POSITION(OMAP_DSS_VIDEO2));
 484         RR(OVL_SIZE(OMAP_DSS_VIDEO2));
 485         RR(OVL_ATTRIBUTES(OMAP_DSS_VIDEO2));
 486         RR(OVL_FIFO_THRESHOLD(OMAP_DSS_VIDEO2));
 487         RR(OVL_ROW_INC(OMAP_DSS_VIDEO2));
 488         RR(OVL_PIXEL_INC(OMAP_DSS_VIDEO2));
 489         RR(OVL_FIR(OMAP_DSS_VIDEO2));
 490         RR(OVL_PICTURE_SIZE(OMAP_DSS_VIDEO2));
 491         RR(OVL_ACCU0(OMAP_DSS_VIDEO2));
 492         RR(OVL_ACCU1(OMAP_DSS_VIDEO2));
 493
 494         for (i = 0; i < 8; i++)
 495                 RR(OVL_FIR_COEF_H(OMAP_DSS_VIDEO2, i));
 496
 497         for (i = 0; i < 8; i++)
 498                 RR(OVL_FIR_COEF_HV(OMAP_DSS_VIDEO2, i));
 499
 500         for (i = 0; i < 5; i++)
 501                 RR(OVL_CONV_COEF(OMAP_DSS_VIDEO2, i));
 502
 503         if (dss_has_feature(FEAT_FIR_COEF_V)) {
 504                 for (i = 0; i < 8; i++)
 505                         RR(OVL_FIR_COEF_V(OMAP_DSS_VIDEO2, i));
 506         }
 507
 508         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
 509                 RR(OVL_BA0_UV(OMAP_DSS_VIDEO2));
 510                 RR(OVL_BA1_UV(OMAP_DSS_VIDEO2));
 511                 RR(OVL_FIR2(OMAP_DSS_VIDEO2));
 512                 RR(OVL_ACCU2_0(OMAP_DSS_VIDEO2));
 513                 RR(OVL_ACCU2_1(OMAP_DSS_VIDEO2));
 514
 515                 for (i = 0; i < 8; i++)
 516                         RR(OVL_FIR_COEF_H2(OMAP_DSS_VIDEO2, i));
 517
 518                 for (i = 0; i < 8; i++)
 519                         RR(OVL_FIR_COEF_HV2(OMAP_DSS_VIDEO2, i));
 520
 521                 for (i = 0; i < 8; i++)
 522                         RR(OVL_FIR_COEF_V2(OMAP_DSS_VIDEO2, i));
 523         }
 524         if (dss_has_feature(FEAT_ATTR2))
 525                 RR(OVL_ATTRIBUTES2(OMAP_DSS_VIDEO2));
 526
 527         if (dss_has_feature(FEAT_PRELOAD))
 528                 RR(OVL_PRELOAD(OMAP_DSS_VIDEO2));
 529
 530         if (dss_has_feature(FEAT_CORE_CLK_DIV))
 531                 RR(DIVISOR);
 532
 533         /* enable last, because LCD & DIGIT enable are here */
 534         RR(CONTROL);
 535         if (dss_has_feature(FEAT_MGR_LCD2))
 536                 RR(CONTROL2);
 537         /* clear spurious SYNC_LOST_DIGIT interrupts */
 538         dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
 539
 540         /*
 541          * enable last so IRQs won't trigger before
 542          * the context is fully restored
 543          */
 544         RR(IRQENABLE);
 545
 546         DSSDBG("context restored\n");
 547 }
 548
 549 #undef SR
 550 #undef RR
 551
 552 int dispc_runtime_get(void)
 553 {
 554         int r;
 555
 556         DSSDBG("dispc_runtime_get\n");
 557
 558         r = pm_runtime_get_sync(&dispc.pdev->dev);
 559         WARN_ON(r < 0);
 560         return r < 0 ? r : 0;
 561 }
 562
 563 void dispc_runtime_put(void)
 564 {
 565         int r;
 566
 567         DSSDBG("dispc_runtime_put\n");
 568
 569         r = pm_runtime_put(&dispc.pdev->dev);
 570         WARN_ON(r < 0);
 571 }
 572
 573
 574 bool dispc_go_busy(enum omap_channel channel)
 575 {
 576         int bit;
 577
 578         if (channel == OMAP_DSS_CHANNEL_LCD ||
 579                         channel == OMAP_DSS_CHANNEL_LCD2)
 580                 bit = 5; /* GOLCD */
 581         else
 582                 bit = 6; /* GODIGIT */
 583
 584         if (channel == OMAP_DSS_CHANNEL_LCD2)
 585                 return REG_GET(DISPC_CONTROL2, bit, bit) == 1;
 586         else
 587                 return REG_GET(DISPC_CONTROL, bit, bit) == 1;
 588 }
 589
 590 void dispc_go(enum omap_channel channel)
 591 {
 592         int bit;
 593         bool enable_bit, go_bit;
 594
 595         if (channel == OMAP_DSS_CHANNEL_LCD ||
 596                         channel == OMAP_DSS_CHANNEL_LCD2)
 597                 bit = 0; /* LCDENABLE */
 598         else
 599                 bit = 1; /* DIGITALENABLE */
 600
 601         /* if the channel is not enabled, we don't need GO */
 602         if (channel == OMAP_DSS_CHANNEL_LCD2)
 603                 enable_bit = REG_GET(DISPC_CONTROL2, bit, bit) == 1;
 604         else
 605                 enable_bit = REG_GET(DISPC_CONTROL, bit, bit) == 1;
 606
 607         if (!enable_bit)
 608                 return;
 609
 610         if (channel == OMAP_DSS_CHANNEL_LCD ||
 611                         channel == OMAP_DSS_CHANNEL_LCD2)
 612                 bit = 5; /* GOLCD */
 613         else
 614                 bit = 6; /* GODIGIT */
 615
 616         if (channel == OMAP_DSS_CHANNEL_LCD2)
 617                 go_bit = REG_GET(DISPC_CONTROL2, bit, bit) == 1;
 618         else
 619                 go_bit = REG_GET(DISPC_CONTROL, bit, bit) == 1;
 620
 621         if (go_bit) {
 622                 DSSERR("GO bit not down for channel %d\n", channel);
 623                 return;
 624         }
 625
 626         DSSDBG("GO %s\n", channel == OMAP_DSS_CHANNEL_LCD ? "LCD" :
 627                 (channel == OMAP_DSS_CHANNEL_LCD2 ? "LCD2" : "DIGIT"));
 628
 629         if (channel == OMAP_DSS_CHANNEL_LCD2)
 630                 REG_FLD_MOD(DISPC_CONTROL2, 1, bit, bit);
 631         else
 632                 REG_FLD_MOD(DISPC_CONTROL, 1, bit, bit);
 633 }
 634
 635 static void _dispc_write_firh_reg(enum omap_plane plane, int reg, u32 value)
 636 {
 637         dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value);
 638 }
 639
 640 static void _dispc_write_firhv_reg(enum omap_plane plane, int reg, u32 value)
 641 {
 642         dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value);
 643 }
 644
 645 static void _dispc_write_firv_reg(enum omap_plane plane, int reg, u32 value)
 646 {
 647         dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value);
 648 }
 649
 650 static void _dispc_write_firh2_reg(enum omap_plane plane, int reg, u32 value)
 651 {
 652         BUG_ON(plane == OMAP_DSS_GFX);
 653
 654         dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value);
 655 }
 656
 657 static void _dispc_write_firhv2_reg(enum omap_plane plane, int reg, u32 value)
 658 {
 659         BUG_ON(plane == OMAP_DSS_GFX);
 660
 661         dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
 662 }
 663
 664 static void _dispc_write_firv2_reg(enum omap_plane plane, int reg, u32 value)
 665 {
 666         BUG_ON(plane == OMAP_DSS_GFX);
 667
 668         dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value);
 669 }
 670
 671 static void _dispc_set_scale_coef(enum omap_plane plane, int hscaleup,
 672                                   int vscaleup, int five_taps,
 673                                   enum omap_color_component color_comp)
 674 {
 675         /* Coefficients for horizontal up-sampling */
 676         static const struct dispc_h_coef coef_hup[8] = {
 677                 {  0,   0, 128,   0,  0 },
 678                 { -1,  13, 124,  -8,  0 },
 679                 { -2,  30, 112, -11, -1 },
 680                 { -5,  51,  95, -11, -2 },
 681                 {  0,  -9,  73,  73, -9 },
 682                 { -2, -11,  95,  51, -5 },
 683                 { -1, -11, 112,  30, -2 },
 684                 {  0,  -8, 124,  13, -1 },
 685         };
 686
 687         /* Coefficients for vertical up-sampling */
 688         static const struct dispc_v_coef coef_vup_3tap[8] = {
 689                 { 0,  0, 128,  0, 0 },
 690                 { 0,  3, 123,  2, 0 },
 691                 { 0, 12, 111,  5, 0 },
 692                 { 0, 32,  89,  7, 0 },
 693                 { 0,  0,  64, 64, 0 },
 694                 { 0,  7,  89, 32, 0 },
 695                 { 0,  5, 111, 12, 0 },
 696                 { 0,  2, 123,  3, 0 },
 697         };
 698
 699         static const struct dispc_v_coef coef_vup_5tap[8] = {
 700                 {  0,   0, 128,   0,  0 },
 701                 { -1,  13, 124,  -8,  0 },
 702                 { -2,  30, 112, -11, -1 },
 703                 { -5,  51,  95, -11, -2 },
 704                 {  0,  -9,  73,  73, -9 },
 705                 { -2, -11,  95,  51, -5 },
 706                 { -1, -11, 112,  30, -2 },
 707                 {  0,  -8, 124,  13, -1 },
 708         };
 709
 710         /* Coefficients for horizontal down-sampling */
 711         static const struct dispc_h_coef coef_hdown[8] = {
 712                 {   0, 36, 56, 36,  0 },
 713                 {   4, 40, 55, 31, -2 },
 714                 {   8, 44, 54, 27, -5 },
 715                 {  12, 48, 53, 22, -7 },
 716                 {  -9, 17, 52, 51, 17 },
 717                 {  -7, 22, 53, 48, 12 },
 718                 {  -5, 27, 54, 44,  8 },
 719                 {  -2, 31, 55, 40,  4 },
 720         };
 721
 722         /* Coefficients for vertical down-sampling */
 723         static const struct dispc_v_coef coef_vdown_3tap[8] = {
 724                 { 0, 36, 56, 36, 0 },
 725                 { 0, 40, 57, 31, 0 },
 726                 { 0, 45, 56, 27, 0 },
 727                 { 0, 50, 55, 23, 0 },
 728                 { 0, 18, 55, 55, 0 },
 729                 { 0, 23, 55, 50, 0 },
 730                 { 0, 27, 56, 45, 0 },
 731                 { 0, 31, 57, 40, 0 },
 732         };
 733
 734         static const struct dispc_v_coef coef_vdown_5tap[8] = {
 735                 {   0, 36, 56, 36,  0 },
 736                 {   4, 40, 55, 31, -2 },
 737                 {   8, 44, 54, 27, -5 },
 738                 {  12, 48, 53, 22, -7 },
 739                 {  -9, 17, 52, 51, 17 },
 740                 {  -7, 22, 53, 48, 12 },
 741                 {  -5, 27, 54, 44,  8 },
 742                 {  -2, 31, 55, 40,  4 },
 743         };
 744
 745         const struct dispc_h_coef *h_coef;
 746         const struct dispc_v_coef *v_coef;
 747         int i;
 748
 749         if (hscaleup)
 750                 h_coef = coef_hup;
 751         else
 752                 h_coef = coef_hdown;
 753
 754         if (vscaleup)
 755                 v_coef = five_taps ? coef_vup_5tap : coef_vup_3tap;
 756         else
 757                 v_coef = five_taps ? coef_vdown_5tap : coef_vdown_3tap;
 758
 759         for (i = 0; i < 8; i++) {
 760                 u32 h, hv;
 761
 762                 h = FLD_VAL(h_coef[i].hc0, 7, 0)
 763                         | FLD_VAL(h_coef[i].hc1, 15, 8)
 764                         | FLD_VAL(h_coef[i].hc2, 23, 16)
 765                         | FLD_VAL(h_coef[i].hc3, 31, 24);
 766                 hv = FLD_VAL(h_coef[i].hc4, 7, 0)
 767                         | FLD_VAL(v_coef[i].vc0, 15, 8)
 768                         | FLD_VAL(v_coef[i].vc1, 23, 16)
 769                         | FLD_VAL(v_coef[i].vc2, 31, 24);
 770
 771                 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
 772                         _dispc_write_firh_reg(plane, i, h);
 773                         _dispc_write_firhv_reg(plane, i, hv);
 774                 } else {
 775                         _dispc_write_firh2_reg(plane, i, h);
 776                         _dispc_write_firhv2_reg(plane, i, hv);
 777                 }
 778
 779         }
 780
 781         if (five_taps) {
 782                 for (i = 0; i < 8; i++) {
 783                         u32 v;
 784                         v = FLD_VAL(v_coef[i].vc00, 7, 0)
 785                                 | FLD_VAL(v_coef[i].vc22, 15, 8);
 786                         if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
 787                                 _dispc_write_firv_reg(plane, i, v);
 788                         else
 789                                 _dispc_write_firv2_reg(plane, i, v);
 790                 }
 791         }
 792 }
 793
 794 static void _dispc_setup_color_conv_coef(void)
 795 {
 796         const struct color_conv_coef {
 797                 int  ry,  rcr,  rcb,   gy,  gcr,  gcb,   by,  bcr,  bcb;
 798                 int  full_range;
 799         }  ctbl_bt601_5 = {
 800                 298,  409,    0,  298, -208, -100,  298,    0,  517, 0,
 801         };
 802
 803         const struct color_conv_coef *ct;
 804
 805 #define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
 806
 807         ct = &ctbl_bt601_5;
 808
 809         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO1, 0),
 810                 CVAL(ct->rcr, ct->ry));
 811         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO1, 1),
 812                 CVAL(ct->gy,  ct->rcb));
 813         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO1, 2),
 814                 CVAL(ct->gcb, ct->gcr));
 815         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO1, 3),
 816                 CVAL(ct->bcr, ct->by));
 817         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO1, 4),
 818                 CVAL(0, ct->bcb));
 819
 820         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO2, 0),
 821                 CVAL(ct->rcr, ct->ry));
 822         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO2, 1),
 823                 CVAL(ct->gy, ct->rcb));
 824         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO2, 2),
 825                 CVAL(ct->gcb, ct->gcr));
 826         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO2, 3),
 827                 CVAL(ct->bcr, ct->by));
 828         dispc_write_reg(DISPC_OVL_CONV_COEF(OMAP_DSS_VIDEO2, 4),
 829                 CVAL(0, ct->bcb));
 830
 831 #undef CVAL
 832
 833         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(OMAP_DSS_VIDEO1),
 834                 ct->full_range, 11, 11);
 835         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(OMAP_DSS_VIDEO2),
 836                 ct->full_range, 11, 11);
 837 }
 838
 839
 840 static void _dispc_set_plane_ba0(enum omap_plane plane, u32 paddr)
 841 {
 842         dispc_write_reg(DISPC_OVL_BA0(plane), paddr);
 843 }
 844
 845 static void _dispc_set_plane_ba1(enum omap_plane plane, u32 paddr)
 846 {
 847         dispc_write_reg(DISPC_OVL_BA1(plane), paddr);
 848 }
 849
 850 static void _dispc_set_plane_ba0_uv(enum omap_plane plane, u32 paddr)
 851 {
 852         dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr);
 853 }
 854
 855 static void _dispc_set_plane_ba1_uv(enum omap_plane plane, u32 paddr)
 856 {
 857         dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr);
 858 }
 859
 860 static void _dispc_set_plane_pos(enum omap_plane plane, int x, int y)
 861 {
 862         u32 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
 863
 864         dispc_write_reg(DISPC_OVL_POSITION(plane), val);
 865 }
 866
 867 static void _dispc_set_pic_size(enum omap_plane plane, int width, int height)
 868 {
 869         u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
 870
 871         if (plane == OMAP_DSS_GFX)
 872                 dispc_write_reg(DISPC_OVL_SIZE(plane), val);
 873         else
 874                 dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
 875 }
 876
 877 static void _dispc_set_vid_size(enum omap_plane plane, int width, int height)
 878 {
 879         u32 val;
 880
 881         BUG_ON(plane == OMAP_DSS_GFX);
 882
 883         val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
 884
 885         dispc_write_reg(DISPC_OVL_SIZE(plane), val);
 886 }
 887
 888 static void _dispc_set_pre_mult_alpha(enum omap_plane plane, bool enable)
 889 {
 890         if (!dss_has_feature(FEAT_PRE_MULT_ALPHA))
 891                 return;
 892
 893         if (!dss_has_feature(FEAT_GLOBAL_ALPHA_VID1) &&
 894                 plane == OMAP_DSS_VIDEO1)
 895                 return;
 896
 897         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
 898 }
 899
 900 static void _dispc_setup_global_alpha(enum omap_plane plane, u8 global_alpha)
 901 {
 902         if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
 903                 return;
 904
 905         if (!dss_has_feature(FEAT_GLOBAL_ALPHA_VID1) &&
 906                 plane == OMAP_DSS_VIDEO1)
 907                 return;
 908
 909         if (plane == OMAP_DSS_GFX)
 910                 REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, 7, 0);
 911         else if (plane == OMAP_DSS_VIDEO2)
 912                 REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, 23, 16);
 913 }
 914
 915 static void _dispc_set_pix_inc(enum omap_plane plane, s32 inc)
 916 {
 917         dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc);
 918 }
 919
 920 static void _dispc_set_row_inc(enum omap_plane plane, s32 inc)
 921 {
 922         dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc);
 923 }
 924
 925 static void _dispc_set_color_mode(enum omap_plane plane,
 926                 enum omap_color_mode color_mode)
 927 {
 928         u32 m = 0;
 929         if (plane != OMAP_DSS_GFX) {
 930                 switch (color_mode) {
 931                 case OMAP_DSS_COLOR_NV12:
 932                         m = 0x0; break;
 933                 case OMAP_DSS_COLOR_RGB12U:
 934                         m = 0x1; break;
 935                 case OMAP_DSS_COLOR_RGBA16:
 936                         m = 0x2; break;
 937                 case OMAP_DSS_COLOR_RGBX16:
 938                         m = 0x4; break;
 939                 case OMAP_DSS_COLOR_ARGB16:
 940                         m = 0x5; break;
 941                 case OMAP_DSS_COLOR_RGB16:
 942                         m = 0x6; break;
 943                 case OMAP_DSS_COLOR_ARGB16_1555:
 944                         m = 0x7; break;
 945                 case OMAP_DSS_COLOR_RGB24U:
 946                         m = 0x8; break;
 947                 case OMAP_DSS_COLOR_RGB24P:
 948                         m = 0x9; break;
 949                 case OMAP_DSS_COLOR_YUV2:
 950                         m = 0xa; break;
 951                 case OMAP_DSS_COLOR_UYVY:
 952                         m = 0xb; break;
 953                 case OMAP_DSS_COLOR_ARGB32:
 954                         m = 0xc; break;
 955                 case OMAP_DSS_COLOR_RGBA32:
 956                         m = 0xd; break;
 957                 case OMAP_DSS_COLOR_RGBX32:
 958                         m = 0xe; break;
 959                 case OMAP_DSS_COLOR_XRGB16_1555:
 960                         m = 0xf; break;
 961                 default:
 962                         BUG(); break;
 963                 }
 964         } else {
 965                 switch (color_mode) {
 966                 case OMAP_DSS_COLOR_CLUT1:
 967                         m = 0x0; break;
 968                 case OMAP_DSS_COLOR_CLUT2:
 969                         m = 0x1; break;
 970                 case OMAP_DSS_COLOR_CLUT4:
 971                         m = 0x2; break;
 972                 case OMAP_DSS_COLOR_CLUT8:
 973                         m = 0x3; break;
 974                 case OMAP_DSS_COLOR_RGB12U:
 975                         m = 0x4; break;
 976                 case OMAP_DSS_COLOR_ARGB16:
 977                         m = 0x5; break;
 978                 case OMAP_DSS_COLOR_RGB16:
 979                         m = 0x6; break;
 980                 case OMAP_DSS_COLOR_ARGB16_1555:
 981                         m = 0x7; break;
 982                 case OMAP_DSS_COLOR_RGB24U:
 983                         m = 0x8; break;
 984                 case OMAP_DSS_COLOR_RGB24P:
 985                         m = 0x9; break;
 986                 case OMAP_DSS_COLOR_YUV2:
 987                         m = 0xa; break;
 988                 case OMAP_DSS_COLOR_UYVY:
 989                         m = 0xb; break;
 990                 case OMAP_DSS_COLOR_ARGB32:
 991                         m = 0xc; break;
 992                 case OMAP_DSS_COLOR_RGBA32:
 993                         m = 0xd; break;
 994                 case OMAP_DSS_COLOR_RGBX32:
 995                         m = 0xe; break;
 996                 case OMAP_DSS_COLOR_XRGB16_1555:
 997                         m = 0xf; break;
 998                 default:
 999                         BUG(); break;
1000                 }
1001         }
1002
1003         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
1004 }
1005
1006 void dispc_set_channel_out(enum omap_plane plane,
1007                 enum omap_channel channel)
1008 {
1009         int shift;
1010         u32 val;
1011         int chan = 0, chan2 = 0;
1012
1013         switch (plane) {
1014         case OMAP_DSS_GFX:
1015                 shift = 8;
1016                 break;
1017         case OMAP_DSS_VIDEO1:
1018         case OMAP_DSS_VIDEO2:
1019                 shift = 16;
1020                 break;
1021         default:
1022                 BUG();
1023                 return;
1024         }
1025
1026         val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1027         if (dss_has_feature(FEAT_MGR_LCD2)) {
1028                 switch (channel) {
1029                 case OMAP_DSS_CHANNEL_LCD:
1030                         chan = 0;
1031                         chan2 = 0;
1032                         break;
1033                 case OMAP_DSS_CHANNEL_DIGIT:
1034                         chan = 1;
1035                         chan2 = 0;
1036                         break;
1037                 case OMAP_DSS_CHANNEL_LCD2:
1038                         chan = 0;
1039                         chan2 = 1;
1040                         break;
1041                 default:
1042                         BUG();
1043                 }
1044
1045                 val = FLD_MOD(val, chan, shift, shift);
1046                 val = FLD_MOD(val, chan2, 31, 30);
1047         } else {
1048                 val = FLD_MOD(val, channel, shift, shift);
1049         }
1050         dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
1051 }
1052
1053 static void dispc_set_burst_size(enum omap_plane plane,
1054                 enum omap_burst_size burst_size)
1055 {
1056         int shift;
1057
1058         switch (plane) {
1059         case OMAP_DSS_GFX:
1060                 shift = 6;
1061                 break;
1062         case OMAP_DSS_VIDEO1:
1063         case OMAP_DSS_VIDEO2:
1064                 shift = 14;
1065                 break;
1066         default:
1067                 BUG();
1068                 return;
1069         }
1070
1071         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift);
1072 }
1073
1074 static void dispc_configure_burst_sizes(void)
1075 {
1076         int i;
1077         const int burst_size = BURST_SIZE_X8;
1078
1079         /* Configure burst size always to maximum size */
1080         for (i = 0; i < omap_dss_get_num_overlays(); ++i)
1081                 dispc_set_burst_size(i, burst_size);
1082 }
1083
1084 u32 dispc_get_burst_size(enum omap_plane plane)
1085 {
1086         unsigned unit = dss_feat_get_burst_size_unit();
1087         /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
1088         return unit * 8;
1089 }
1090
1091 void dispc_enable_gamma_table(bool enable)
1092 {
1093         /*
1094          * This is partially implemented to support only disabling of
1095          * the gamma table.
1096          */
1097         if (enable) {
1098                 DSSWARN("Gamma table enabling for TV not yet supported");
1099                 return;
1100         }
1101
1102         REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9);
1103 }
1104
1105 void dispc_enable_cpr(enum omap_channel channel, bool enable)
1106 {
1107         u16 reg;
1108
1109         if (channel == OMAP_DSS_CHANNEL_LCD)
1110                 reg = DISPC_CONFIG;
1111         else if (channel == OMAP_DSS_CHANNEL_LCD2)
1112                 reg = DISPC_CONFIG2;
1113         else
1114                 return;
1115
1116         REG_FLD_MOD(reg, enable, 15, 15);
1117 }
1118
1119 void dispc_set_cpr_coef(enum omap_channel channel,
1120                 struct omap_dss_cpr_coefs *coefs)
1121 {
1122         u32 coef_r, coef_g, coef_b;
1123
1124         if (channel != OMAP_DSS_CHANNEL_LCD && channel != OMAP_DSS_CHANNEL_LCD2)
1125                 return;
1126
1127         coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
1128                 FLD_VAL(coefs->rb, 9, 0);
1129         coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
1130                 FLD_VAL(coefs->gb, 9, 0);
1131         coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
1132                 FLD_VAL(coefs->bb, 9, 0);
1133
1134         dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r);
1135         dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g);
1136         dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b);
1137 }
1138
1139 static void _dispc_set_vid_color_conv(enum omap_plane plane, bool enable)
1140 {
1141         u32 val;
1142
1143         BUG_ON(plane == OMAP_DSS_GFX);
1144
1145         val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1146         val = FLD_MOD(val, enable, 9, 9);
1147         dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
1148 }
1149
1150 void dispc_enable_replication(enum omap_plane plane, bool enable)
1151 {
1152         int bit;
1153
1154         if (plane == OMAP_DSS_GFX)
1155                 bit = 5;
1156         else
1157                 bit = 10;
1158
1159         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, bit, bit);
1160 }
1161
1162 void dispc_set_lcd_size(enum omap_channel channel, u16 width, u16 height)
1163 {
1164         u32 val;
1165         BUG_ON((width > (1 << 11)) || (height > (1 << 11)));
1166         val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
1167         dispc_write_reg(DISPC_SIZE_MGR(channel), val);
1168 }
1169
1170 void dispc_set_digit_size(u16 width, u16 height)
1171 {
1172         u32 val;
1173         BUG_ON((width > (1 << 11)) || (height > (1 << 11)));
1174         val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
1175         dispc_write_reg(DISPC_SIZE_MGR(OMAP_DSS_CHANNEL_DIGIT), val);
1176 }
1177
1178 static void dispc_read_plane_fifo_sizes(void)
1179 {
1180         u32 size;
1181         int plane;
1182         u8 start, end;
1183         u32 unit;
1184
1185         unit = dss_feat_get_buffer_size_unit();
1186
1187         dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
1188
1189         for (plane = 0; plane < ARRAY_SIZE(dispc.fifo_size); ++plane) {
1190                 size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(plane), start, end);
1191                 size *= unit;
1192                 dispc.fifo_size[plane] = size;
1193         }
1194 }
1195
1196 u32 dispc_get_plane_fifo_size(enum omap_plane plane)
1197 {
1198         return dispc.fifo_size[plane];
1199 }
1200
1201 void dispc_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high)
1202 {
1203         u8 hi_start, hi_end, lo_start, lo_end;
1204         u32 unit;
1205
1206         unit = dss_feat_get_buffer_size_unit();
1207
1208         WARN_ON(low % unit != 0);
1209         WARN_ON(high % unit != 0);
1210
1211         low /= unit;
1212         high /= unit;
1213
1214         dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
1215         dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
1216
1217         DSSDBG("fifo(%d) low/high old %u/%u, new %u/%u\n",
1218                         plane,
1219                         REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1220                                 lo_start, lo_end),
1221                         REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1222                                 hi_start, hi_end),
1223                         low, high);
1224
1225         dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane),
1226                         FLD_VAL(high, hi_start, hi_end) |
1227                         FLD_VAL(low, lo_start, lo_end));
1228 }
1229
1230 void dispc_enable_fifomerge(bool enable)
1231 {
1232         DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
1233         REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
1234 }
1235
1236 static void _dispc_set_fir(enum omap_plane plane,
1237                                 int hinc, int vinc,
1238                                 enum omap_color_component color_comp)
1239 {
1240         u32 val;
1241
1242         if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
1243                 u8 hinc_start, hinc_end, vinc_start, vinc_end;
1244
1245                 dss_feat_get_reg_field(FEAT_REG_FIRHINC,
1246                                         &hinc_start, &hinc_end);
1247                 dss_feat_get_reg_field(FEAT_REG_FIRVINC,
1248                                         &vinc_start, &vinc_end);
1249                 val = FLD_VAL(vinc, vinc_start, vinc_end) |
1250                                 FLD_VAL(hinc, hinc_start, hinc_end);
1251
1252                 dispc_write_reg(DISPC_OVL_FIR(plane), val);
1253         } else {
1254                 val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
1255                 dispc_write_reg(DISPC_OVL_FIR2(plane), val);
1256         }
1257 }
1258
1259 static void _dispc_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu)
1260 {
1261         u32 val;
1262         u8 hor_start, hor_end, vert_start, vert_end;
1263
1264         dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1265         dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1266
1267         val = FLD_VAL(vaccu, vert_start, vert_end) |
1268                         FLD_VAL(haccu, hor_start, hor_end);
1269
1270         dispc_write_reg(DISPC_OVL_ACCU0(plane), val);
1271 }
1272
1273 static void _dispc_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
1274 {
1275         u32 val;
1276         u8 hor_start, hor_end, vert_start, vert_end;
1277
1278         dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1279         dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1280
1281         val = FLD_VAL(vaccu, vert_start, vert_end) |
1282                         FLD_VAL(haccu, hor_start, hor_end);
1283
1284         dispc_write_reg(DISPC_OVL_ACCU1(plane), val);
1285 }
1286
1287 static void _dispc_set_vid_accu2_0(enum omap_plane plane, int haccu, int vaccu)
1288 {
1289         u32 val;
1290
1291         val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1292         dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val);
1293 }
1294
1295 static void _dispc_set_vid_accu2_1(enum omap_plane plane, int haccu, int vaccu)
1296 {
1297         u32 val;
1298
1299         val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1300         dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val);
1301 }
1302
1303 static void _dispc_set_scale_param(enum omap_plane plane,
1304                 u16 orig_width, u16 orig_height,
1305                 u16 out_width, u16 out_height,
1306                 bool five_taps, u8 rotation,
1307                 enum omap_color_component color_comp)
1308 {
1309         int fir_hinc, fir_vinc;
1310         int hscaleup, vscaleup;
1311
1312         hscaleup = orig_width <= out_width;
1313         vscaleup = orig_height <= out_height;
1314
1315         _dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps, color_comp);
1316
1317         fir_hinc = 1024 * orig_width / out_width;
1318         fir_vinc = 1024 * orig_height / out_height;
1319
1320         _dispc_set_fir(plane, fir_hinc, fir_vinc, color_comp);
1321 }
1322
1323 static void _dispc_set_scaling_common(enum omap_plane plane,
1324                 u16 orig_width, u16 orig_height,
1325                 u16 out_width, u16 out_height,
1326                 bool ilace, bool five_taps,
1327                 bool fieldmode, enum omap_color_mode color_mode,
1328                 u8 rotation)
1329 {
1330         int accu0 = 0;
1331         int accu1 = 0;
1332         u32 l;
1333
1334         _dispc_set_scale_param(plane, orig_width, orig_height,
1335                                 out_width, out_height, five_taps,
1336                                 rotation, DISPC_COLOR_COMPONENT_RGB_Y);
1337         l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1338
1339         /* RESIZEENABLE and VERTICALTAPS */
1340         l &= ~((0x3 << 5) | (0x1 << 21));
1341         l |= (orig_width != out_width) ? (1 << 5) : 0;
1342         l |= (orig_height != out_height) ? (1 << 6) : 0;
1343         l |= five_taps ? (1 << 21) : 0;
1344
1345         /* VRESIZECONF and HRESIZECONF */
1346         if (dss_has_feature(FEAT_RESIZECONF)) {
1347                 l &= ~(0x3 << 7);
1348                 l |= (orig_width <= out_width) ? 0 : (1 << 7);
1349                 l |= (orig_height <= out_height) ? 0 : (1 << 8);
1350         }
1351
1352         /* LINEBUFFERSPLIT */
1353         if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) {
1354                 l &= ~(0x1 << 22);
1355                 l |= five_taps ? (1 << 22) : 0;
1356         }
1357
1358         dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
1359
1360         /*
1361          * field 0 = even field = bottom field
1362          * field 1 = odd field = top field
1363          */
1364         if (ilace && !fieldmode) {
1365                 accu1 = 0;
1366                 accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
1367                 if (accu0 >= 1024/2) {
1368                         accu1 = 1024/2;
1369                         accu0 -= accu1;
1370                 }
1371         }
1372
1373         _dispc_set_vid_accu0(plane, 0, accu0);
1374         _dispc_set_vid_accu1(plane, 0, accu1);
1375 }
1376
1377 static void _dispc_set_scaling_uv(enum omap_plane plane,
1378                 u16 orig_width, u16 orig_height,
1379                 u16 out_width, u16 out_height,
1380                 bool ilace, bool five_taps,
1381                 bool fieldmode, enum omap_color_mode color_mode,
1382                 u8 rotation)
1383 {
1384         int scale_x = out_width != orig_width;
1385         int scale_y = out_height != orig_height;
1386
1387         if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE))
1388                 return;
1389         if ((color_mode != OMAP_DSS_COLOR_YUV2 &&
1390                         color_mode != OMAP_DSS_COLOR_UYVY &&
1391                         color_mode != OMAP_DSS_COLOR_NV12)) {
1392                 /* reset chroma resampling for RGB formats  */
1393                 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8);
1394                 return;
1395         }
1396         switch (color_mode) {
1397         case OMAP_DSS_COLOR_NV12:
1398                 /* UV is subsampled by 2 vertically*/
1399                 orig_height >>= 1;
1400                 /* UV is subsampled by 2 horz.*/
1401                 orig_width >>= 1;
1402                 break;
1403         case OMAP_DSS_COLOR_YUV2:
1404         case OMAP_DSS_COLOR_UYVY:
1405                 /*For YUV422 with 90/270 rotation,
1406                  *we don't upsample chroma
1407                  */
1408                 if (rotation == OMAP_DSS_ROT_0 ||
1409                         rotation == OMAP_DSS_ROT_180)
1410                         /* UV is subsampled by 2 hrz*/
1411                         orig_width >>= 1;
1412                 /* must use FIR for YUV422 if rotated */
1413                 if (rotation != OMAP_DSS_ROT_0)
1414                         scale_x = scale_y = true;
1415                 break;
1416         default:
1417                 BUG();
1418         }
1419
1420         if (out_width != orig_width)
1421                 scale_x = true;
1422         if (out_height != orig_height)
1423                 scale_y = true;
1424
1425         _dispc_set_scale_param(plane, orig_width, orig_height,
1426                         out_width, out_height, five_taps,
1427                                 rotation, DISPC_COLOR_COMPONENT_UV);
1428
1429         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane),
1430                 (scale_x || scale_y) ? 1 : 0, 8, 8);
1431         /* set H scaling */
1432         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
1433         /* set V scaling */
1434         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
1435
1436         _dispc_set_vid_accu2_0(plane, 0x80, 0);
1437         _dispc_set_vid_accu2_1(plane, 0x80, 0);
1438 }
1439
1440 static void _dispc_set_scaling(enum omap_plane plane,
1441                 u16 orig_width, u16 orig_height,
1442                 u16 out_width, u16 out_height,
1443                 bool ilace, bool five_taps,
1444                 bool fieldmode, enum omap_color_mode color_mode,
1445                 u8 rotation)
1446 {
1447         BUG_ON(plane == OMAP_DSS_GFX);
1448
1449         _dispc_set_scaling_common(plane,
1450                         orig_width, orig_height,
1451                         out_width, out_height,
1452                         ilace, five_taps,
1453                         fieldmode, color_mode,
1454                         rotation);
1455
1456         _dispc_set_scaling_uv(plane,
1457                 orig_width, orig_height,
1458                 out_width, out_height,
1459                 ilace, five_taps,
1460                 fieldmode, color_mode,
1461                 rotation);
1462 }
1463
1464 static void _dispc_set_rotation_attrs(enum omap_plane plane, u8 rotation,
1465                 bool mirroring, enum omap_color_mode color_mode)
1466 {
1467         bool row_repeat = false;
1468         int vidrot = 0;
1469
1470         if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1471                         color_mode == OMAP_DSS_COLOR_UYVY) {
1472
1473                 if (mirroring) {
1474                         switch (rotation) {
1475                         case OMAP_DSS_ROT_0:
1476                                 vidrot = 2;
1477                                 break;
1478                         case OMAP_DSS_ROT_90:
1479                                 vidrot = 1;
1480                                 break;
1481                         case OMAP_DSS_ROT_180:
1482                                 vidrot = 0;
1483                                 break;
1484                         case OMAP_DSS_ROT_270:
1485                                 vidrot = 3;
1486                                 break;
1487                         }
1488                 } else {
1489                         switch (rotation) {
1490                         case OMAP_DSS_ROT_0:
1491                                 vidrot = 0;
1492                                 break;
1493                         case OMAP_DSS_ROT_90:
1494                                 vidrot = 1;
1495                                 break;
1496                         case OMAP_DSS_ROT_180:
1497                                 vidrot = 2;
1498                                 break;
1499                         case OMAP_DSS_ROT_270:
1500                                 vidrot = 3;
1501                                 break;
1502                         }
1503                 }
1504
1505                 if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
1506                         row_repeat = true;
1507                 else
1508                         row_repeat = false;
1509         }
1510
1511         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
1512         if (dss_has_feature(FEAT_ROWREPEATENABLE))
1513                 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane),
1514                         row_repeat ? 1 : 0, 18, 18);
1515 }
1516
1517 static int color_mode_to_bpp(enum omap_color_mode color_mode)
1518 {
1519         switch (color_mode) {
1520         case OMAP_DSS_COLOR_CLUT1:
1521                 return 1;
1522         case OMAP_DSS_COLOR_CLUT2:
1523                 return 2;
1524         case OMAP_DSS_COLOR_CLUT4:
1525                 return 4;
1526         case OMAP_DSS_COLOR_CLUT8:
1527         case OMAP_DSS_COLOR_NV12:
1528                 return 8;
1529         case OMAP_DSS_COLOR_RGB12U:
1530         case OMAP_DSS_COLOR_RGB16:
1531         case OMAP_DSS_COLOR_ARGB16:
1532         case OMAP_DSS_COLOR_YUV2:
1533         case OMAP_DSS_COLOR_UYVY:
1534         case OMAP_DSS_COLOR_RGBA16:
1535         case OMAP_DSS_COLOR_RGBX16:
1536         case OMAP_DSS_COLOR_ARGB16_1555:
1537         case OMAP_DSS_COLOR_XRGB16_1555:
1538                 return 16;
1539         case OMAP_DSS_COLOR_RGB24P:
1540                 return 24;
1541         case OMAP_DSS_COLOR_RGB24U:
1542         case OMAP_DSS_COLOR_ARGB32:
1543         case OMAP_DSS_COLOR_RGBA32:
1544         case OMAP_DSS_COLOR_RGBX32:
1545                 return 32;
1546         default:
1547                 BUG();
1548         }
1549 }
1550
1551 static s32 pixinc(int pixels, u8 ps)
1552 {
1553         if (pixels == 1)
1554                 return 1;
1555         else if (pixels > 1)
1556                 return 1 + (pixels - 1) * ps;
1557         else if (pixels < 0)
1558                 return 1 - (-pixels + 1) * ps;
1559         else
1560                 BUG();
1561 }
1562
1563 static void calc_vrfb_rotation_offset(u8 rotation, bool mirror,
1564                 u16 screen_width,
1565                 u16 width, u16 height,
1566                 enum omap_color_mode color_mode, bool fieldmode,
1567                 unsigned int field_offset,
1568                 unsigned *offset0, unsigned *offset1,
1569                 s32 *row_inc, s32 *pix_inc)
1570 {
1571         u8 ps;
1572
1573         /* FIXME CLUT formats */
1574         switch (color_mode) {
1575         case OMAP_DSS_COLOR_CLUT1:
1576         case OMAP_DSS_COLOR_CLUT2:
1577         case OMAP_DSS_COLOR_CLUT4:
1578         case OMAP_DSS_COLOR_CLUT8:
1579                 BUG();
1580                 return;
1581         case OMAP_DSS_COLOR_YUV2:
1582         case OMAP_DSS_COLOR_UYVY:
1583                 ps = 4;
1584                 break;
1585         default:
1586                 ps = color_mode_to_bpp(color_mode) / 8;
1587                 break;
1588         }
1589
1590         DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1591                         width, height);
1592
1593         /*
1594          * field 0 = even field = bottom field
1595          * field 1 = odd field = top field
1596          */
1597         switch (rotation + mirror * 4) {
1598         case OMAP_DSS_ROT_0:
1599         case OMAP_DSS_ROT_180:
1600                 /*
1601                  * If the pixel format is YUV or UYVY divide the width
1602                  * of the image by 2 for 0 and 180 degree rotation.
1603                  */
1604                 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1605                         color_mode == OMAP_DSS_COLOR_UYVY)
1606                         width = width >> 1;
1607         case OMAP_DSS_ROT_90:
1608         case OMAP_DSS_ROT_270:
1609                 *offset1 = 0;
1610                 if (field_offset)
1611                         *offset0 = field_offset * screen_width * ps;
1612                 else
1613                         *offset0 = 0;
1614
1615                 *row_inc = pixinc(1 + (screen_width - width) +
1616                                 (fieldmode ? screen_width : 0),
1617                                 ps);
1618                 *pix_inc = pixinc(1, ps);
1619                 break;
1620
1621         case OMAP_DSS_ROT_0 + 4:
1622         case OMAP_DSS_ROT_180 + 4:
1623                 /* If the pixel format is YUV or UYVY divide the width
1624                  * of the image by 2  for 0 degree and 180 degree
1625                  */
1626                 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1627                         color_mode == OMAP_DSS_COLOR_UYVY)
1628                         width = width >> 1;
1629         case OMAP_DSS_ROT_90 + 4:
1630         case OMAP_DSS_ROT_270 + 4:
1631                 *offset1 = 0;
1632                 if (field_offset)
1633                         *offset0 = field_offset * screen_width * ps;
1634                 else
1635                         *offset0 = 0;
1636                 *row_inc = pixinc(1 - (screen_width + width) -
1637                                 (fieldmode ? screen_width : 0),
1638                                 ps);
1639                 *pix_inc = pixinc(1, ps);
1640                 break;
1641
1642         default:
1643                 BUG();
1644         }
1645 }
1646
1647 static void calc_dma_rotation_offset(u8 rotation, bool mirror,
1648                 u16 screen_width,
1649                 u16 width, u16 height,
1650                 enum omap_color_mode color_mode, bool fieldmode,
1651                 unsigned int field_offset,
1652                 unsigned *offset0, unsigned *offset1,
1653                 s32 *row_inc, s32 *pix_inc)
1654 {
1655         u8 ps;
1656         u16 fbw, fbh;
1657
1658         /* FIXME CLUT formats */
1659         switch (color_mode) {
1660         case OMAP_DSS_COLOR_CLUT1:
1661         case OMAP_DSS_COLOR_CLUT2:
1662         case OMAP_DSS_COLOR_CLUT4:
1663         case OMAP_DSS_COLOR_CLUT8:
1664                 BUG();
1665                 return;
1666         default:
1667                 ps = color_mode_to_bpp(color_mode) / 8;
1668                 break;
1669         }
1670
1671         DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1672                         width, height);
1673
1674         /* width & height are overlay sizes, convert to fb sizes */
1675
1676         if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) {
1677                 fbw = width;
1678                 fbh = height;
1679         } else {
1680                 fbw = height;
1681                 fbh = width;
1682         }
1683
1684         /*
1685          * field 0 = even field = bottom field
1686          * field 1 = odd field = top field
1687          */
1688         switch (rotation + mirror * 4) {
1689         case OMAP_DSS_ROT_0:
1690                 *offset1 = 0;
1691                 if (field_offset)
1692                         *offset0 = *offset1 + field_offset * screen_width * ps;
1693                 else
1694                         *offset0 = *offset1;
1695                 *row_inc = pixinc(1 + (screen_width - fbw) +
1696                                 (fieldmode ? screen_width : 0),
1697                                 ps);
1698                 *pix_inc = pixinc(1, ps);
1699                 break;
1700         case OMAP_DSS_ROT_90:
1701                 *offset1 = screen_width * (fbh - 1) * ps;
1702                 if (field_offset)
1703                         *offset0 = *offset1 + field_offset * ps;
1704                 else
1705                         *offset0 = *offset1;
1706                 *row_inc = pixinc(screen_width * (fbh - 1) + 1 +
1707                                 (fieldmode ? 1 : 0), ps);
1708                 *pix_inc = pixinc(-screen_width, ps);
1709                 break;
1710         case OMAP_DSS_ROT_180:
1711                 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
1712                 if (field_offset)
1713                         *offset0 = *offset1 - field_offset * screen_width * ps;
1714                 else
1715                         *offset0 = *offset1;
1716                 *row_inc = pixinc(-1 -
1717                                 (screen_width - fbw) -
1718                                 (fieldmode ? screen_width : 0),
1719                                 ps);
1720                 *pix_inc = pixinc(-1, ps);
1721                 break;
1722         case OMAP_DSS_ROT_270:
1723                 *offset1 = (fbw - 1) * ps;
1724                 if (field_offset)
1725                         *offset0 = *offset1 - field_offset * ps;
1726                 else
1727                         *offset0 = *offset1;
1728                 *row_inc = pixinc(-screen_width * (fbh - 1) - 1 -
1729                                 (fieldmode ? 1 : 0), ps);
1730                 *pix_inc = pixinc(screen_width, ps);
1731                 break;
1732
1733         /* mirroring */
1734         case OMAP_DSS_ROT_0 + 4:
1735                 *offset1 = (fbw - 1) * ps;
1736                 if (field_offset)
1737                         *offset0 = *offset1 + field_offset * screen_width * ps;
1738                 else
1739                         *offset0 = *offset1;
1740                 *row_inc = pixinc(screen_width * 2 - 1 +
1741                                 (fieldmode ? screen_width : 0),
1742                                 ps);
1743                 *pix_inc = pixinc(-1, ps);
1744                 break;
1745
1746         case OMAP_DSS_ROT_90 + 4:
1747                 *offset1 = 0;
1748                 if (field_offset)
1749                         *offset0 = *offset1 + field_offset * ps;
1750                 else
1751                         *offset0 = *offset1;
1752                 *row_inc = pixinc(-screen_width * (fbh - 1) + 1 +
1753                                 (fieldmode ? 1 : 0),
1754                                 ps);
1755                 *pix_inc = pixinc(screen_width, ps);
1756                 break;
1757
1758         case OMAP_DSS_ROT_180 + 4:
1759                 *offset1 = screen_width * (fbh - 1) * ps;
1760                 if (field_offset)
1761                         *offset0 = *offset1 - field_offset * screen_width * ps;
1762                 else
1763                         *offset0 = *offset1;
1764                 *row_inc = pixinc(1 - screen_width * 2 -
1765                                 (fieldmode ? screen_width : 0),
1766                                 ps);
1767                 *pix_inc = pixinc(1, ps);
1768                 break;
1769
1770         case OMAP_DSS_ROT_270 + 4:
1771                 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
1772                 if (field_offset)
1773                         *offset0 = *offset1 - field_offset * ps;
1774                 else
1775                         *offset0 = *offset1;
1776                 *row_inc = pixinc(screen_width * (fbh - 1) - 1 -
1777                                 (fieldmode ? 1 : 0),
1778                                 ps);
1779                 *pix_inc = pixinc(-screen_width, ps);
1780                 break;
1781
1782         default:
1783                 BUG();
1784         }
1785 }
1786
1787 static unsigned long calc_fclk_five_taps(enum omap_channel channel, u16 width,
1788                 u16 height, u16 out_width, u16 out_height,
1789                 enum omap_color_mode color_mode)
1790 {
1791         u32 fclk = 0;
1792         /* FIXME venc pclk? */
1793         u64 tmp, pclk = dispc_pclk_rate(channel);
1794
1795         if (height > out_height) {
1796                 /* FIXME get real display PPL */
1797                 unsigned int ppl = 800;
1798
1799                 tmp = pclk * height * out_width;
1800                 do_div(tmp, 2 * out_height * ppl);
1801                 fclk = tmp;
1802
1803                 if (height > 2 * out_height) {
1804                         if (ppl == out_width)
1805                                 return 0;
1806
1807                         tmp = pclk * (height - 2 * out_height) * out_width;
1808                         do_div(tmp, 2 * out_height * (ppl - out_width));
1809                         fclk = max(fclk, (u32) tmp);
1810                 }
1811         }
1812
1813         if (width > out_width) {
1814                 tmp = pclk * width;
1815                 do_div(tmp, out_width);
1816                 fclk = max(fclk, (u32) tmp);
1817
1818                 if (color_mode == OMAP_DSS_COLOR_RGB24U)
1819                         fclk <<= 1;
1820         }
1821
1822         return fclk;
1823 }
1824
1825 static unsigned long calc_fclk(enum omap_channel channel, u16 width,
1826                 u16 height, u16 out_width, u16 out_height)
1827 {
1828         unsigned int hf, vf;
1829
1830         /*
1831          * FIXME how to determine the 'A' factor
1832          * for the no downscaling case ?
1833          */
1834
1835         if (width > 3 * out_width)
1836                 hf = 4;
1837         else if (width > 2 * out_width)
1838                 hf = 3;
1839         else if (width > out_width)
1840                 hf = 2;
1841         else
1842                 hf = 1;
1843
1844         if (height > out_height)
1845                 vf = 2;
1846         else
1847                 vf = 1;
1848
1849         /* FIXME venc pclk? */
1850         return dispc_pclk_rate(channel) * vf * hf;
1851 }
1852
1853 int dispc_setup_plane(enum omap_plane plane,
1854                 u32 paddr, u16 screen_width,
1855                 u16 pos_x, u16 pos_y,
1856                 u16 width, u16 height,
1857                 u16 out_width, u16 out_height,
1858                 enum omap_color_mode color_mode,
1859                 bool ilace,
1860                 enum omap_dss_rotation_type rotation_type,
1861                 u8 rotation, bool mirror,
1862                 u8 global_alpha, u8 pre_mult_alpha,
1863                 enum omap_channel channel, u32 puv_addr)
1864 {
1865         const int maxdownscale = cpu_is_omap34xx() ? 4 : 2;
1866         bool five_taps = 0;
1867         bool fieldmode = 0;
1868         int cconv = 0;
1869         unsigned offset0, offset1;
1870         s32 row_inc;
1871         s32 pix_inc;
1872         u16 frame_height = height;
1873         unsigned int field_offset = 0;
1874
1875         DSSDBG("dispc_setup_plane %d, pa %x, sw %d, %d,%d, %dx%d -> "
1876                "%dx%d, ilace %d, cmode %x, rot %d, mir %d chan %d\n",
1877                plane, paddr, screen_width, pos_x, pos_y,
1878                width, height,
1879                out_width, out_height,
1880                ilace, color_mode,
1881                rotation, mirror, channel);
1882
1883         if (paddr == 0)
1884                 return -EINVAL;
1885
1886         if (ilace && height == out_height)
1887                 fieldmode = 1;
1888
1889         if (ilace) {
1890                 if (fieldmode)
1891                         height /= 2;
1892                 pos_y /= 2;
1893                 out_height /= 2;
1894
1895                 DSSDBG("adjusting for ilace: height %d, pos_y %d, "
1896                                 "out_height %d\n",
1897                                 height, pos_y, out_height);
1898         }
1899
1900         if (!dss_feat_color_mode_supported(plane, color_mode))
1901                 return -EINVAL;
1902
1903         if (plane == OMAP_DSS_GFX) {
1904                 if (width != out_width || height != out_height)
1905                         return -EINVAL;
1906         } else {
1907                 /* video plane */
1908
1909                 unsigned long fclk = 0;
1910
1911                 if (out_width < width / maxdownscale ||
1912                    out_width > width * 8)
1913                         return -EINVAL;
1914
1915                 if (out_height < height / maxdownscale ||
1916                    out_height > height * 8)
1917                         return -EINVAL;
1918
1919                 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1920                         color_mode == OMAP_DSS_COLOR_UYVY ||
1921                         color_mode == OMAP_DSS_COLOR_NV12)
1922                         cconv = 1;
1923
1924                 /* Must use 5-tap filter? */
1925                 five_taps = height > out_height * 2;
1926
1927                 if (!five_taps) {
1928                         fclk = calc_fclk(channel, width, height, out_width,
1929                                         out_height);
1930
1931                         /* Try 5-tap filter if 3-tap fclk is too high */
1932                         if (cpu_is_omap34xx() && height > out_height &&
1933                                         fclk > dispc_fclk_rate())
1934                                 five_taps = true;
1935                 }
1936
1937                 if (width > (2048 >> five_taps)) {
1938                         DSSERR("failed to set up scaling, fclk too low\n");
1939                         return -EINVAL;
1940                 }
1941
1942                 if (five_taps)
1943                         fclk = calc_fclk_five_taps(channel, width, height,
1944                                         out_width, out_height, color_mode);
1945
1946                 DSSDBG("required fclk rate = %lu Hz\n", fclk);
1947                 DSSDBG("current fclk rate = %lu Hz\n", dispc_fclk_rate());
1948
1949                 if (!fclk || fclk > dispc_fclk_rate()) {
1950                         DSSERR("failed to set up scaling, "
1951                                         "required fclk rate = %lu Hz, "
1952                                         "current fclk rate = %lu Hz\n",
1953                                         fclk, dispc_fclk_rate());
1954                         return -EINVAL;
1955                 }
1956         }
1957
1958         if (ilace && !fieldmode) {
1959                 /*
1960                  * when downscaling the bottom field may have to start several
1961                  * source lines below the top field. Unfortunately ACCUI
1962                  * registers will only hold the fractional part of the offset
1963                  * so the integer part must be added to the base address of the
1964                  * bottom field.
1965                  */
1966                 if (!height || height == out_height)
1967                         field_offset = 0;
1968                 else
1969                         field_offset = height / out_height / 2;
1970         }
1971
1972         /* Fields are independent but interleaved in memory. */
1973         if (fieldmode)
1974                 field_offset = 1;
1975
1976         if (rotation_type == OMAP_DSS_ROT_DMA)
1977                 calc_dma_rotation_offset(rotation, mirror,
1978                                 screen_width, width, frame_height, color_mode,
1979                                 fieldmode, field_offset,
1980                                 &offset0, &offset1, &row_inc, &pix_inc);
1981         else
1982                 calc_vrfb_rotation_offset(rotation, mirror,
1983                                 screen_width, width, frame_height, color_mode,
1984                                 fieldmode, field_offset,
1985                                 &offset0, &offset1, &row_inc, &pix_inc);
1986
1987         DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
1988                         offset0, offset1, row_inc, pix_inc);
1989
1990         _dispc_set_color_mode(plane, color_mode);
1991
1992         _dispc_set_plane_ba0(plane, paddr + offset0);
1993         _dispc_set_plane_ba1(plane, paddr + offset1);
1994
1995         if (OMAP_DSS_COLOR_NV12 == color_mode) {
1996                 _dispc_set_plane_ba0_uv(plane, puv_addr + offset0);
1997                 _dispc_set_plane_ba1_uv(plane, puv_addr + offset1);
1998         }
1999
2000
2001         _dispc_set_row_inc(plane, row_inc);
2002         _dispc_set_pix_inc(plane, pix_inc);
2003
2004         DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, width, height,
2005                         out_width, out_height);
2006
2007         _dispc_set_plane_pos(plane, pos_x, pos_y);
2008
2009         _dispc_set_pic_size(plane, width, height);
2010
2011         if (plane != OMAP_DSS_GFX) {
2012                 _dispc_set_scaling(plane, width, height,
2013                                    out_width, out_height,
2014                                    ilace, five_taps, fieldmode,
2015                                    color_mode, rotation);
2016                 _dispc_set_vid_size(plane, out_width, out_height);
2017                 _dispc_set_vid_color_conv(plane, cconv);
2018         }
2019
2020         _dispc_set_rotation_attrs(plane, rotation, mirror, color_mode);
2021
2022         _dispc_set_pre_mult_alpha(plane, pre_mult_alpha);
2023         _dispc_setup_global_alpha(plane, global_alpha);
2024
2025         return 0;
2026 }
2027
2028 int dispc_enable_plane(enum omap_plane plane, bool enable)
2029 {
2030         DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
2031
2032         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
2033
2034         return 0;
2035 }
2036
2037 static void dispc_disable_isr(void *data, u32 mask)
2038 {
2039         struct completion *compl = data;
2040         complete(compl);
2041 }
2042
2043 static void _enable_lcd_out(enum omap_channel channel, bool enable)
2044 {
2045         if (channel == OMAP_DSS_CHANNEL_LCD2)
2046                 REG_FLD_MOD(DISPC_CONTROL2, enable ? 1 : 0, 0, 0);
2047         else
2048                 REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 0, 0);
2049 }
2050
2051 static void dispc_enable_lcd_out(enum omap_channel channel, bool enable)
2052 {
2053         struct completion frame_done_completion;
2054         bool is_on;
2055         int r;
2056         u32 irq;
2057
2058         /* When we disable LCD output, we need to wait until frame is done.
2059          * Otherwise the DSS is still working, and turning off the clocks
2060          * prevents DSS from going to OFF mode */
2061         is_on = channel == OMAP_DSS_CHANNEL_LCD2 ?
2062                         REG_GET(DISPC_CONTROL2, 0, 0) :
2063                         REG_GET(DISPC_CONTROL, 0, 0);
2064
2065         irq = channel == OMAP_DSS_CHANNEL_LCD2 ? DISPC_IRQ_FRAMEDONE2 :
2066                         DISPC_IRQ_FRAMEDONE;
2067
2068         if (!enable && is_on) {
2069                 init_completion(&frame_done_completion);
2070
2071                 r = omap_dispc_register_isr(dispc_disable_isr,
2072                                 &frame_done_completion, irq);
2073
2074                 if (r)
2075                         DSSERR("failed to register FRAMEDONE isr\n");
2076         }
2077
2078         _enable_lcd_out(channel, enable);
2079
2080         if (!enable && is_on) {
2081                 if (!wait_for_completion_timeout(&frame_done_completion,
2082                                         msecs_to_jiffies(100)))
2083                         DSSERR("timeout waiting for FRAME DONE\n");
2084
2085                 r = omap_dispc_unregister_isr(dispc_disable_isr,
2086                                 &frame_done_completion, irq);
2087
2088                 if (r)
2089                         DSSERR("failed to unregister FRAMEDONE isr\n");
2090         }
2091 }
2092
2093 static void _enable_digit_out(bool enable)
2094 {
2095         REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 1, 1);
2096 }
2097
2098 static void dispc_enable_digit_out(bool enable)
2099 {
2100         struct completion frame_done_completion;
2101         int r;
2102
2103         if (REG_GET(DISPC_CONTROL, 1, 1) == enable)
2104                 return;
2105
2106         if (enable) {
2107                 unsigned long flags;
2108                 /* When we enable digit output, we'll get an extra digit
2109                  * sync lost interrupt, that we need to ignore */
2110                 spin_lock_irqsave(&dispc.irq_lock, flags);
2111                 dispc.irq_error_mask &= ~DISPC_IRQ_SYNC_LOST_DIGIT;
2112                 _omap_dispc_set_irqs();
2113                 spin_unlock_irqrestore(&dispc.irq_lock, flags);
2114         }
2115
2116         /* When we disable digit output, we need to wait until fields are done.
2117          * Otherwise the DSS is still working, and turning off the clocks
2118          * prevents DSS from going to OFF mode. And when enabling, we need to
2119          * wait for the extra sync losts */
2120         init_completion(&frame_done_completion);
2121
2122         r = omap_dispc_register_isr(dispc_disable_isr, &frame_done_completion,
2123                         DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD);
2124         if (r)
2125                 DSSERR("failed to register EVSYNC isr\n");
2126
2127         _enable_digit_out(enable);
2128
2129         /* XXX I understand from TRM that we should only wait for the
2130          * current field to complete. But it seems we have to wait
2131          * for both fields */
2132         if (!wait_for_completion_timeout(&frame_done_completion,
2133                                 msecs_to_jiffies(100)))
2134                 DSSERR("timeout waiting for EVSYNC\n");
2135
2136         if (!wait_for_completion_timeout(&frame_done_completion,
2137                                 msecs_to_jiffies(100)))
2138                 DSSERR("timeout waiting for EVSYNC\n");
2139
2140         r = omap_dispc_unregister_isr(dispc_disable_isr,
2141                         &frame_done_completion,
2142                         DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD);
2143         if (r)
2144                 DSSERR("failed to unregister EVSYNC isr\n");
2145
2146         if (enable) {
2147                 unsigned long flags;
2148                 spin_lock_irqsave(&dispc.irq_lock, flags);
2149                 dispc.irq_error_mask = DISPC_IRQ_MASK_ERROR;
2150                 if (dss_has_feature(FEAT_MGR_LCD2))
2151                         dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST2;
2152                 dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
2153                 _omap_dispc_set_irqs();
2154                 spin_unlock_irqrestore(&dispc.irq_lock, flags);
2155         }
2156 }
2157
2158 bool dispc_is_channel_enabled(enum omap_channel channel)
2159 {
2160         if (channel == OMAP_DSS_CHANNEL_LCD)
2161                 return !!REG_GET(DISPC_CONTROL, 0, 0);
2162         else if (channel == OMAP_DSS_CHANNEL_DIGIT)
2163                 return !!REG_GET(DISPC_CONTROL, 1, 1);
2164         else if (channel == OMAP_DSS_CHANNEL_LCD2)
2165                 return !!REG_GET(DISPC_CONTROL2, 0, 0);
2166         else
2167                 BUG();
2168 }
2169
2170 void dispc_enable_channel(enum omap_channel channel, bool enable)
2171 {
2172         if (channel == OMAP_DSS_CHANNEL_LCD ||
2173                         channel == OMAP_DSS_CHANNEL_LCD2)
2174                 dispc_enable_lcd_out(channel, enable);
2175         else if (channel == OMAP_DSS_CHANNEL_DIGIT)
2176                 dispc_enable_digit_out(enable);
2177         else
2178                 BUG();
2179 }
2180
2181 void dispc_lcd_enable_signal_polarity(bool act_high)
2182 {
2183         if (!dss_has_feature(FEAT_LCDENABLEPOL))
2184                 return;
2185
2186         REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
2187 }
2188
2189 void dispc_lcd_enable_signal(bool enable)
2190 {
2191         if (!dss_has_feature(FEAT_LCDENABLESIGNAL))
2192                 return;
2193
2194         REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
2195 }
2196
2197 void dispc_pck_free_enable(bool enable)
2198 {
2199         if (!dss_has_feature(FEAT_PCKFREEENABLE))
2200                 return;
2201
2202         REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
2203 }
2204
2205 void dispc_enable_fifohandcheck(enum omap_channel channel, bool enable)
2206 {
2207         if (channel == OMAP_DSS_CHANNEL_LCD2)
2208                 REG_FLD_MOD(DISPC_CONFIG2, enable ? 1 : 0, 16, 16);
2209         else
2210                 REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 16, 16);
2211 }
2212
2213
2214 void dispc_set_lcd_display_type(enum omap_channel channel,
2215                 enum omap_lcd_display_type type)
2216 {
2217         int mode;
2218
2219         switch (type) {
2220         case OMAP_DSS_LCD_DISPLAY_STN:
2221                 mode = 0;
2222                 break;
2223
2224         case OMAP_DSS_LCD_DISPLAY_TFT:
2225                 mode = 1;
2226                 break;
2227
2228         default:
2229                 BUG();
2230                 return;
2231         }
2232
2233         if (channel == OMAP_DSS_CHANNEL_LCD2)
2234                 REG_FLD_MOD(DISPC_CONTROL2, mode, 3, 3);
2235         else
2236                 REG_FLD_MOD(DISPC_CONTROL, mode, 3, 3);
2237 }
2238
2239 void dispc_set_loadmode(enum omap_dss_load_mode mode)
2240 {
2241         REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1);
2242 }
2243
2244
2245 void dispc_set_default_color(enum omap_channel channel, u32 color)
2246 {
2247         dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color);
2248 }
2249
2250 u32 dispc_get_default_color(enum omap_channel channel)
2251 {
2252         u32 l;
2253
2254         BUG_ON(channel != OMAP_DSS_CHANNEL_DIGIT &&
2255                 channel != OMAP_DSS_CHANNEL_LCD &&
2256                 channel != OMAP_DSS_CHANNEL_LCD2);
2257
2258         l = dispc_read_reg(DISPC_DEFAULT_COLOR(channel));
2259
2260         return l;
2261 }
2262
2263 void dispc_set_trans_key(enum omap_channel ch,
2264                 enum omap_dss_trans_key_type type,
2265                 u32 trans_key)
2266 {
2267         if (ch == OMAP_DSS_CHANNEL_LCD)
2268                 REG_FLD_MOD(DISPC_CONFIG, type, 11, 11);
2269         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2270                 REG_FLD_MOD(DISPC_CONFIG, type, 13, 13);
2271         else /* OMAP_DSS_CHANNEL_LCD2 */
2272                 REG_FLD_MOD(DISPC_CONFIG2, type, 11, 11);
2273
2274         dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key);
2275 }
2276
2277 void dispc_get_trans_key(enum omap_channel ch,
2278                 enum omap_dss_trans_key_type *type,
2279                 u32 *trans_key)
2280 {
2281         if (type) {
2282                 if (ch == OMAP_DSS_CHANNEL_LCD)
2283                         *type = REG_GET(DISPC_CONFIG, 11, 11);
2284                 else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2285                         *type = REG_GET(DISPC_CONFIG, 13, 13);
2286                 else if (ch == OMAP_DSS_CHANNEL_LCD2)
2287                         *type = REG_GET(DISPC_CONFIG2, 11, 11);
2288                 else
2289                         BUG();
2290         }
2291
2292         if (trans_key)
2293                 *trans_key = dispc_read_reg(DISPC_TRANS_COLOR(ch));
2294 }
2295
2296 void dispc_enable_trans_key(enum omap_channel ch, bool enable)
2297 {
2298         if (ch == OMAP_DSS_CHANNEL_LCD)
2299                 REG_FLD_MOD(DISPC_CONFIG, enable, 10, 10);
2300         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2301                 REG_FLD_MOD(DISPC_CONFIG, enable, 12, 12);
2302         else /* OMAP_DSS_CHANNEL_LCD2 */
2303                 REG_FLD_MOD(DISPC_CONFIG2, enable, 10, 10);
2304 }
2305 void dispc_enable_alpha_blending(enum omap_channel ch, bool enable)
2306 {
2307         if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
2308                 return;
2309
2310         if (ch == OMAP_DSS_CHANNEL_LCD)
2311                 REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18);
2312         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2313                 REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19);
2314         else /* OMAP_DSS_CHANNEL_LCD2 */
2315                 REG_FLD_MOD(DISPC_CONFIG2, enable, 18, 18);
2316 }
2317 bool dispc_alpha_blending_enabled(enum omap_channel ch)
2318 {
2319         bool enabled;
2320
2321         if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
2322                 return false;
2323
2324         if (ch == OMAP_DSS_CHANNEL_LCD)
2325                 enabled = REG_GET(DISPC_CONFIG, 18, 18);
2326         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2327                 enabled = REG_GET(DISPC_CONFIG, 19, 19);
2328         else if (ch == OMAP_DSS_CHANNEL_LCD2)
2329                 enabled = REG_GET(DISPC_CONFIG2, 18, 18);
2330         else
2331                 BUG();
2332
2333         return enabled;
2334 }
2335
2336
2337 bool dispc_trans_key_enabled(enum omap_channel ch)
2338 {
2339         bool enabled;
2340
2341         if (ch == OMAP_DSS_CHANNEL_LCD)
2342                 enabled = REG_GET(DISPC_CONFIG, 10, 10);
2343         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2344                 enabled = REG_GET(DISPC_CONFIG, 12, 12);
2345         else if (ch == OMAP_DSS_CHANNEL_LCD2)
2346                 enabled = REG_GET(DISPC_CONFIG2, 10, 10);
2347         else
2348                 BUG();
2349
2350         return enabled;
2351 }
2352
2353
2354 void dispc_set_tft_data_lines(enum omap_channel channel, u8 data_lines)
2355 {
2356         int code;
2357
2358         switch (data_lines) {
2359         case 12:
2360                 code = 0;
2361                 break;
2362         case 16:
2363                 code = 1;
2364                 break;
2365         case 18:
2366                 code = 2;
2367                 break;
2368         case 24:
2369                 code = 3;
2370                 break;
2371         default:
2372                 BUG();
2373                 return;
2374         }
2375
2376         if (channel == OMAP_DSS_CHANNEL_LCD2)
2377                 REG_FLD_MOD(DISPC_CONTROL2, code, 9, 8);
2378         else
2379                 REG_FLD_MOD(DISPC_CONTROL, code, 9, 8);
2380 }
2381
2382 void dispc_set_parallel_interface_mode(enum omap_channel channel,
2383                 enum omap_parallel_interface_mode mode)
2384 {
2385         u32 l;
2386         int stallmode;
2387         int gpout0 = 1;
2388         int gpout1;
2389
2390         switch (mode) {
2391         case OMAP_DSS_PARALLELMODE_BYPASS:
2392                 stallmode = 0;
2393                 gpout1 = 1;
2394                 break;
2395
2396         case OMAP_DSS_PARALLELMODE_RFBI:
2397                 stallmode = 1;
2398                 gpout1 = 0;
2399                 break;
2400
2401         case OMAP_DSS_PARALLELMODE_DSI:
2402                 stallmode = 1;
2403                 gpout1 = 1;
2404                 break;
2405
2406         default:
2407                 BUG();
2408                 return;
2409         }
2410
2411         if (channel == OMAP_DSS_CHANNEL_LCD2) {
2412                 l = dispc_read_reg(DISPC_CONTROL2);
2413                 l = FLD_MOD(l, stallmode, 11, 11);
2414                 dispc_write_reg(DISPC_CONTROL2, l);
2415         } else {
2416                 l = dispc_read_reg(DISPC_CONTROL);
2417                 l = FLD_MOD(l, stallmode, 11, 11);
2418                 l = FLD_MOD(l, gpout0, 15, 15);
2419                 l = FLD_MOD(l, gpout1, 16, 16);
2420                 dispc_write_reg(DISPC_CONTROL, l);
2421         }
2422 }
2423
2424 static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp,
2425                 int vsw, int vfp, int vbp)
2426 {
2427         if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) {
2428                 if (hsw < 1 || hsw > 64 ||
2429                                 hfp < 1 || hfp > 256 ||
2430                                 hbp < 1 || hbp > 256 ||
2431                                 vsw < 1 || vsw > 64 ||
2432                                 vfp < 0 || vfp > 255 ||
2433                                 vbp < 0 || vbp > 255)
2434                         return false;
2435         } else {
2436                 if (hsw < 1 || hsw > 256 ||
2437                                 hfp < 1 || hfp > 4096 ||
2438                                 hbp < 1 || hbp > 4096 ||
2439                                 vsw < 1 || vsw > 256 ||
2440                                 vfp < 0 || vfp > 4095 ||
2441                                 vbp < 0 || vbp > 4095)
2442                         return false;
2443         }
2444
2445         return true;
2446 }
2447
2448 bool dispc_lcd_timings_ok(struct omap_video_timings *timings)
2449 {
2450         return _dispc_lcd_timings_ok(timings->hsw, timings->hfp,
2451                         timings->hbp, timings->vsw,
2452                         timings->vfp, timings->vbp);
2453 }
2454
2455 static void _dispc_set_lcd_timings(enum omap_channel channel, int hsw,
2456                 int hfp, int hbp, int vsw, int vfp, int vbp)
2457 {
2458         u32 timing_h, timing_v;
2459
2460         if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) {
2461                 timing_h = FLD_VAL(hsw-1, 5, 0) | FLD_VAL(hfp-1, 15, 8) |
2462                         FLD_VAL(hbp-1, 27, 20);
2463
2464                 timing_v = FLD_VAL(vsw-1, 5, 0) | FLD_VAL(vfp, 15, 8) |
2465                         FLD_VAL(vbp, 27, 20);
2466         } else {
2467                 timing_h = FLD_VAL(hsw-1, 7, 0) | FLD_VAL(hfp-1, 19, 8) |
2468                         FLD_VAL(hbp-1, 31, 20);
2469
2470                 timing_v = FLD_VAL(vsw-1, 7, 0) | FLD_VAL(vfp, 19, 8) |
2471                         FLD_VAL(vbp, 31, 20);
2472         }
2473
2474         dispc_write_reg(DISPC_TIMING_H(channel), timing_h);
2475         dispc_write_reg(DISPC_TIMING_V(channel), timing_v);
2476 }
2477
2478 /* change name to mode? */
2479 void dispc_set_lcd_timings(enum omap_channel channel,
2480                 struct omap_video_timings *timings)
2481 {
2482         unsigned xtot, ytot;
2483         unsigned long ht, vt;
2484
2485         if (!_dispc_lcd_timings_ok(timings->hsw, timings->hfp,
2486                                 timings->hbp, timings->vsw,
2487                                 timings->vfp, timings->vbp))
2488                 BUG();
2489
2490         _dispc_set_lcd_timings(channel, timings->hsw, timings->hfp,
2491                         timings->hbp, timings->vsw, timings->vfp,
2492                         timings->vbp);
2493
2494         dispc_set_lcd_size(channel, timings->x_res, timings->y_res);
2495
2496         xtot = timings->x_res + timings->hfp + timings->hsw + timings->hbp;
2497         ytot = timings->y_res + timings->vfp + timings->vsw + timings->vbp;
2498
2499         ht = (timings->pixel_clock * 1000) / xtot;
2500         vt = (timings->pixel_clock * 1000) / xtot / ytot;
2501
2502         DSSDBG("channel %d xres %u yres %u\n", channel, timings->x_res,
2503                         timings->y_res);
2504         DSSDBG("pck %u\n", timings->pixel_clock);
2505         DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
2506                         timings->hsw, timings->hfp, timings->hbp,
2507                         timings->vsw, timings->vfp, timings->vbp);
2508
2509         DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
2510 }
2511
2512 static void dispc_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
2513                 u16 pck_div)
2514 {
2515         BUG_ON(lck_div < 1);
2516         BUG_ON(pck_div < 2);
2517
2518         dispc_write_reg(DISPC_DIVISORo(channel),
2519                         FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
2520 }
2521
2522 static void dispc_get_lcd_divisor(enum omap_channel channel, int *lck_div,
2523                 int *pck_div)
2524 {
2525         u32 l;
2526         l = dispc_read_reg(DISPC_DIVISORo(channel));
2527         *lck_div = FLD_GET(l, 23, 16);
2528         *pck_div = FLD_GET(l, 7, 0);
2529 }
2530
2531 unsigned long dispc_fclk_rate(void)
2532 {
2533         struct platform_device *dsidev;
2534         unsigned long r = 0;
2535
2536         switch (dss_get_dispc_clk_source()) {
2537         case OMAP_DSS_CLK_SRC_FCK:
2538                 r = clk_get_rate(dispc.dss_clk);
2539                 break;
2540         case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
2541                 dsidev = dsi_get_dsidev_from_id(0);
2542                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2543                 break;
2544         case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
2545                 dsidev = dsi_get_dsidev_from_id(1);
2546                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2547                 break;
2548         default:
2549                 BUG();
2550         }
2551
2552         return r;
2553 }
2554
2555 unsigned long dispc_lclk_rate(enum omap_channel channel)
2556 {
2557         struct platform_device *dsidev;
2558         int lcd;
2559         unsigned long r;
2560         u32 l;
2561
2562         l = dispc_read_reg(DISPC_DIVISORo(channel));
2563
2564         lcd = FLD_GET(l, 23, 16);
2565
2566         switch (dss_get_lcd_clk_source(channel)) {
2567         case OMAP_DSS_CLK_SRC_FCK:
2568                 r = clk_get_rate(dispc.dss_clk);
2569                 break;
2570         case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
2571                 dsidev = dsi_get_dsidev_from_id(0);
2572                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2573                 break;
2574         case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
2575                 dsidev = dsi_get_dsidev_from_id(1);
2576                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2577                 break;
2578         default:
2579                 BUG();
2580         }
2581
2582         return r / lcd;
2583 }
2584
2585 unsigned long dispc_pclk_rate(enum omap_channel channel)
2586 {
2587         int pcd;
2588         unsigned long r;
2589         u32 l;
2590
2591         l = dispc_read_reg(DISPC_DIVISORo(channel));
2592
2593         pcd = FLD_GET(l, 7, 0);
2594
2595         r = dispc_lclk_rate(channel);
2596
2597         return r / pcd;
2598 }
2599
2600 void dispc_dump_clocks(struct seq_file *s)
2601 {
2602         int lcd, pcd;
2603         u32 l;
2604         enum omap_dss_clk_source dispc_clk_src = dss_get_dispc_clk_source();
2605         enum omap_dss_clk_source lcd_clk_src;
2606
2607         if (dispc_runtime_get())
2608                 return;
2609
2610         seq_printf(s, "- DISPC -\n");
2611
2612         seq_printf(s, "dispc fclk source = %s (%s)\n",
2613                         dss_get_generic_clk_source_name(dispc_clk_src),
2614                         dss_feat_get_clk_source_name(dispc_clk_src));
2615
2616         seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate());
2617
2618         if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
2619                 seq_printf(s, "- DISPC-CORE-CLK -\n");
2620                 l = dispc_read_reg(DISPC_DIVISOR);
2621                 lcd = FLD_GET(l, 23, 16);
2622
2623                 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
2624                                 (dispc_fclk_rate()/lcd), lcd);
2625         }
2626         seq_printf(s, "- LCD1 -\n");
2627
2628         lcd_clk_src = dss_get_lcd_clk_source(OMAP_DSS_CHANNEL_LCD);
2629
2630         seq_printf(s, "lcd1_clk source = %s (%s)\n",
2631                 dss_get_generic_clk_source_name(lcd_clk_src),
2632                 dss_feat_get_clk_source_name(lcd_clk_src));
2633
2634         dispc_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD, &lcd, &pcd);
2635
2636         seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
2637                         dispc_lclk_rate(OMAP_DSS_CHANNEL_LCD), lcd);
2638         seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
2639                         dispc_pclk_rate(OMAP_DSS_CHANNEL_LCD), pcd);
2640         if (dss_has_feature(FEAT_MGR_LCD2)) {
2641                 seq_printf(s, "- LCD2 -\n");
2642
2643                 lcd_clk_src = dss_get_lcd_clk_source(OMAP_DSS_CHANNEL_LCD2);
2644
2645                 seq_printf(s, "lcd2_clk source = %s (%s)\n",
2646                         dss_get_generic_clk_source_name(lcd_clk_src),
2647                         dss_feat_get_clk_source_name(lcd_clk_src));
2648
2649                 dispc_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD2, &lcd, &pcd);
2650
2651                 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
2652                                 dispc_lclk_rate(OMAP_DSS_CHANNEL_LCD2), lcd);
2653                 seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
2654                                 dispc_pclk_rate(OMAP_DSS_CHANNEL_LCD2), pcd);
2655         }
2656
2657         dispc_runtime_put();
2658 }
2659
2660 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
2661 void dispc_dump_irqs(struct seq_file *s)
2662 {
2663         unsigned long flags;
2664         struct dispc_irq_stats stats;
2665
2666         spin_lock_irqsave(&dispc.irq_stats_lock, flags);
2667
2668         stats = dispc.irq_stats;
2669         memset(&dispc.irq_stats, 0, sizeof(dispc.irq_stats));
2670         dispc.irq_stats.last_reset = jiffies;
2671
2672         spin_unlock_irqrestore(&dispc.irq_stats_lock, flags);
2673
2674         seq_printf(s, "period %u ms\n",
2675                         jiffies_to_msecs(jiffies - stats.last_reset));
2676
2677         seq_printf(s, "irqs %d\n", stats.irq_count);
2678 #define PIS(x) \
2679         seq_printf(s, "%-20s %10d\n", #x, stats.irqs[ffs(DISPC_IRQ_##x)-1]);
2680
2681         PIS(FRAMEDONE);
2682         PIS(VSYNC);
2683         PIS(EVSYNC_EVEN);
2684         PIS(EVSYNC_ODD);
2685         PIS(ACBIAS_COUNT_STAT);
2686         PIS(PROG_LINE_NUM);
2687         PIS(GFX_FIFO_UNDERFLOW);
2688         PIS(GFX_END_WIN);
2689         PIS(PAL_GAMMA_MASK);
2690         PIS(OCP_ERR);
2691         PIS(VID1_FIFO_UNDERFLOW);
2692         PIS(VID1_END_WIN);
2693         PIS(VID2_FIFO_UNDERFLOW);
2694         PIS(VID2_END_WIN);
2695         PIS(SYNC_LOST);
2696         PIS(SYNC_LOST_DIGIT);
2697         PIS(WAKEUP);
2698         if (dss_has_feature(FEAT_MGR_LCD2)) {
2699                 PIS(FRAMEDONE2);
2700                 PIS(VSYNC2);
2701                 PIS(ACBIAS_COUNT_STAT2);
2702                 PIS(SYNC_LOST2);
2703         }
2704 #undef PIS
2705 }
2706 #endif
2707
2708 void dispc_dump_regs(struct seq_file *s)
2709 {
2710 #define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r))
2711
2712         if (dispc_runtime_get())
2713                 return;
2714
2715         /* DISPC common registers */
2716         DUMPREG(DISPC_REVISION);
2717         DUMPREG(DISPC_SYSCONFIG);
2718         DUMPREG(DISPC_SYSSTATUS);
2719         DUMPREG(DISPC_IRQSTATUS);
2720         DUMPREG(DISPC_IRQENABLE);
2721         DUMPREG(DISPC_CONTROL);
2722         DUMPREG(DISPC_CONFIG);
2723         DUMPREG(DISPC_CAPABLE);
2724         DUMPREG(DISPC_LINE_STATUS);
2725         DUMPREG(DISPC_LINE_NUMBER);
2726         if (dss_has_feature(FEAT_GLOBAL_ALPHA))
2727                 DUMPREG(DISPC_GLOBAL_ALPHA);
2728         if (dss_has_feature(FEAT_MGR_LCD2)) {
2729                 DUMPREG(DISPC_CONTROL2);
2730                 DUMPREG(DISPC_CONFIG2);
2731         }
2732
2733 #undef DUMPREG
2734
2735 #define DISPC_REG(i, name) name(i)
2736 #define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, #i, \
2737         48 - strlen(#r) - strlen(#i), " ", \
2738         dispc_read_reg(DISPC_REG(i, r)))
2739
2740         /* LCD registers */
2741         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_DEFAULT_COLOR);
2742         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_TRANS_COLOR);
2743         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_TIMING_H);
2744         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_TIMING_V);
2745         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_POL_FREQ);
2746         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_DIVISORo);
2747         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_SIZE_MGR);
2748
2749         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_DATA_CYCLE1);
2750         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_DATA_CYCLE2);
2751         DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_DATA_CYCLE3);
2752
2753         if (dss_has_feature(FEAT_CPR)) {
2754                 DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_CPR_COEF_R);
2755                 DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_CPR_COEF_G);
2756                 DUMPREG(OMAP_DSS_CHANNEL_LCD, DISPC_CPR_COEF_B);
2757         }
2758
2759         /* DIGIT registers */
2760         DUMPREG(OMAP_DSS_CHANNEL_DIGIT, DISPC_DEFAULT_COLOR);
2761         DUMPREG(OMAP_DSS_CHANNEL_DIGIT, DISPC_TRANS_COLOR);
2762         DUMPREG(OMAP_DSS_CHANNEL_DIGIT, DISPC_SIZE_MGR);
2763
2764         /* LCD2 registers */
2765         if (dss_has_feature(FEAT_MGR_LCD2)) {
2766                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_DEFAULT_COLOR);
2767                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_TRANS_COLOR);
2768                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_TIMING_H);
2769                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_TIMING_V);
2770                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_POL_FREQ);
2771                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_DIVISORo);
2772                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_SIZE_MGR);
2773
2774                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_DATA_CYCLE1);
2775                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_DATA_CYCLE2);
2776                 DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_DATA_CYCLE3);
2777
2778                 if (dss_has_feature(FEAT_CPR)) {
2779                         DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_CPR_COEF_R);
2780                         DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_CPR_COEF_G);
2781                         DUMPREG(OMAP_DSS_CHANNEL_LCD2, DISPC_CPR_COEF_B);
2782                 }
2783         }
2784
2785         /* GFX registers */
2786         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_BA0);
2787         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_BA1);
2788         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_POSITION);
2789         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_SIZE);
2790         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_ATTRIBUTES);
2791         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_FIFO_THRESHOLD);
2792         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_FIFO_SIZE_STATUS);
2793         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_ROW_INC);
2794         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_PIXEL_INC);
2795         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_WINDOW_SKIP);
2796         DUMPREG(OMAP_DSS_GFX, DISPC_OVL_TABLE_BA);
2797         if (dss_has_feature(FEAT_PRELOAD))
2798                 DUMPREG(OMAP_DSS_GFX, DISPC_OVL_PRELOAD);
2799
2800         /* VIDEO1 registers */
2801         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_BA0);
2802         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_BA1);
2803         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_POSITION);
2804         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_SIZE);
2805         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_ATTRIBUTES);
2806         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIFO_THRESHOLD);
2807         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIFO_SIZE_STATUS);
2808         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_ROW_INC);
2809         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_PIXEL_INC);
2810         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR);
2811         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_PICTURE_SIZE);
2812         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_ACCU0);
2813         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_ACCU1);
2814         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
2815                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_BA0_UV);
2816                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_BA1_UV);
2817                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR2);
2818                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_ACCU2_0);
2819                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_ACCU2_1);
2820         }
2821         if (dss_has_feature(FEAT_ATTR2))
2822                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_ATTRIBUTES2);
2823         if (dss_has_feature(FEAT_PRELOAD))
2824                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_PRELOAD);
2825
2826         /* VIDEO2 registers */
2827         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_BA0);
2828         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_BA1);
2829         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_POSITION);
2830         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_SIZE);
2831         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_ATTRIBUTES);
2832         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIFO_THRESHOLD);
2833         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIFO_SIZE_STATUS);
2834         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_ROW_INC);
2835         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_PIXEL_INC);
2836         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR);
2837         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_PICTURE_SIZE);
2838         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_ACCU0);
2839         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_ACCU1);
2840         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
2841                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_BA0_UV);
2842                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_BA1_UV);
2843                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR2);
2844                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_ACCU2_0);
2845                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_ACCU2_1);
2846         }
2847         if (dss_has_feature(FEAT_ATTR2))
2848                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_ATTRIBUTES2);
2849         if (dss_has_feature(FEAT_PRELOAD))
2850                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_PRELOAD);
2851
2852 #undef DISPC_REG
2853 #undef DUMPREG
2854
2855 #define DISPC_REG(plane, name, i) name(plane, i)
2856 #define DUMPREG(plane, name, i) \
2857         seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, #plane, \
2858         46 - strlen(#name) - strlen(#plane), " ", \
2859         dispc_read_reg(DISPC_REG(plane, name, i)))
2860
2861         /* VIDEO1 coefficient registers */
2862         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 0);
2863         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 1);
2864         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 2);
2865         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 3);
2866         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 4);
2867         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 5);
2868         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 6);
2869         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H, 7);
2870
2871         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 0);
2872         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 1);
2873         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 2);
2874         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 3);
2875         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 4);
2876         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 5);
2877         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 6);
2878         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV, 7);
2879
2880         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_CONV_COEF, 0);
2881         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_CONV_COEF, 1);
2882         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_CONV_COEF, 2);
2883         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_CONV_COEF, 3);
2884         DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_CONV_COEF, 4);
2885
2886         if (dss_has_feature(FEAT_FIR_COEF_V)) {
2887                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 0);
2888                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 1);
2889                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 2);
2890                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 3);
2891                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 4);
2892                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 5);
2893                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 6);
2894                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V, 7);
2895         }
2896
2897         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
2898                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 0);
2899                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 1);
2900                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 2);
2901                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 3);
2902                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 4);
2903                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 5);
2904                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 6);
2905                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_H2, 7);
2906
2907                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 0);
2908                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 1);
2909                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 2);
2910                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 3);
2911                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 4);
2912                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 5);
2913                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 6);
2914                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_HV2, 7);
2915
2916                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 0);
2917                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 1);
2918                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 2);
2919                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 3);
2920                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 4);
2921                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 5);
2922                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 6);
2923                 DUMPREG(OMAP_DSS_VIDEO1, DISPC_OVL_FIR_COEF_V2, 7);
2924         }
2925
2926         /* VIDEO2 coefficient registers */
2927         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 0);
2928         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 1);
2929         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 2);
2930         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 3);
2931         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 4);
2932         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 5);
2933         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 6);
2934         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H, 7);
2935
2936         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 0);
2937         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 1);
2938         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 2);
2939         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 3);
2940         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 4);
2941         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 5);
2942         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 6);
2943         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV, 7);
2944
2945         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_CONV_COEF, 0);
2946         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_CONV_COEF, 1);
2947         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_CONV_COEF, 2);
2948         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_CONV_COEF, 3);
2949         DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_CONV_COEF, 4);
2950         if (dss_has_feature(FEAT_FIR_COEF_V)) {
2951                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 0);
2952                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 1);
2953                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 2);
2954                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 3);
2955                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 4);
2956                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 5);
2957                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 6);
2958                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V, 7);
2959         }
2960
2961         if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
2962                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 0);
2963                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 1);
2964                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 2);
2965                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 3);
2966                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 4);
2967                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 5);
2968                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 6);
2969                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_H2, 7);
2970
2971                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 0);
2972                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 1);
2973                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 2);
2974                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 3);
2975                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 4);
2976                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 5);
2977                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 6);
2978                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_HV2, 7);
2979
2980                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 0);
2981                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 1);
2982                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 2);
2983                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 3);
2984                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 4);
2985                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 5);
2986                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 6);
2987                 DUMPREG(OMAP_DSS_VIDEO2, DISPC_OVL_FIR_COEF_V2, 7);
2988         }
2989
2990         dispc_runtime_put();
2991
2992 #undef DISPC_REG
2993 #undef DUMPREG
2994 }
2995
2996 static void _dispc_set_pol_freq(enum omap_channel channel, bool onoff, bool rf,
2997                 bool ieo, bool ipc, bool ihs, bool ivs, u8 acbi, u8 acb)
2998 {
2999         u32 l = 0;
3000
3001         DSSDBG("onoff %d rf %d ieo %d ipc %d ihs %d ivs %d acbi %d acb %d\n",
3002                         onoff, rf, ieo, ipc, ihs, ivs, acbi, acb);
3003
3004         l |= FLD_VAL(onoff, 17, 17);
3005         l |= FLD_VAL(rf, 16, 16);
3006         l |= FLD_VAL(ieo, 15, 15);
3007         l |= FLD_VAL(ipc, 14, 14);
3008         l |= FLD_VAL(ihs, 13, 13);
3009         l |= FLD_VAL(ivs, 12, 12);
3010         l |= FLD_VAL(acbi, 11, 8);
3011         l |= FLD_VAL(acb, 7, 0);
3012
3013         dispc_write_reg(DISPC_POL_FREQ(channel), l);
3014 }
3015
3016 void dispc_set_pol_freq(enum omap_channel channel,
3017                 enum omap_panel_config config, u8 acbi, u8 acb)
3018 {
3019         _dispc_set_pol_freq(channel, (config & OMAP_DSS_LCD_ONOFF) != 0,
3020                         (config & OMAP_DSS_LCD_RF) != 0,
3021                         (config & OMAP_DSS_LCD_IEO) != 0,
3022                         (config & OMAP_DSS_LCD_IPC) != 0,
3023                         (config & OMAP_DSS_LCD_IHS) != 0,
3024                         (config & OMAP_DSS_LCD_IVS) != 0,
3025                         acbi, acb);
3026 }
3027
3028 /* with fck as input clock rate, find dispc dividers that produce req_pck */
3029 void dispc_find_clk_divs(bool is_tft, unsigned long req_pck, unsigned long fck,
3030                 struct dispc_clock_info *cinfo)
3031 {
3032         u16 pcd_min = is_tft ? 2 : 3;
3033         unsigned long best_pck;
3034         u16 best_ld, cur_ld;
3035         u16 best_pd, cur_pd;
3036
3037         best_pck = 0;
3038         best_ld = 0;
3039         best_pd = 0;
3040
3041         for (cur_ld = 1; cur_ld <= 255; ++cur_ld) {
3042                 unsigned long lck = fck / cur_ld;
3043
3044                 for (cur_pd = pcd_min; cur_pd <= 255; ++cur_pd) {
3045                         unsigned long pck = lck / cur_pd;
3046                         long old_delta = abs(best_pck - req_pck);
3047                         long new_delta = abs(pck - req_pck);
3048
3049                         if (best_pck == 0 || new_delta < old_delta) {
3050                                 best_pck = pck;
3051                                 best_ld = cur_ld;
3052                                 best_pd = cur_pd;
3053
3054                                 if (pck == req_pck)
3055                                         goto found;
3056                         }
3057
3058                         if (pck < req_pck)
3059                                 break;
3060                 }
3061
3062                 if (lck / pcd_min < req_pck)
3063                         break;
3064         }
3065
3066 found:
3067         cinfo->lck_div = best_ld;
3068         cinfo->pck_div = best_pd;
3069         cinfo->lck = fck / cinfo->lck_div;
3070         cinfo->pck = cinfo->lck / cinfo->pck_div;
3071 }
3072
3073 /* calculate clock rates using dividers in cinfo */
3074 int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
3075                 struct dispc_clock_info *cinfo)
3076 {
3077         if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
3078                 return -EINVAL;
3079         if (cinfo->pck_div < 2 || cinfo->pck_div > 255)
3080                 return -EINVAL;
3081
3082         cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
3083         cinfo->pck = cinfo->lck / cinfo->pck_div;
3084
3085         return 0;
3086 }
3087
3088 int dispc_set_clock_div(enum omap_channel channel,
3089                 struct dispc_clock_info *cinfo)
3090 {
3091         DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
3092         DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
3093
3094         dispc_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div);
3095
3096         return 0;
3097 }
3098
3099 int dispc_get_clock_div(enum omap_channel channel,
3100                 struct dispc_clock_info *cinfo)
3101 {
3102         unsigned long fck;
3103
3104         fck = dispc_fclk_rate();
3105
3106         cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16);
3107         cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0);
3108
3109         cinfo->lck = fck / cinfo->lck_div;
3110         cinfo->pck = cinfo->lck / cinfo->pck_div;
3111
3112         return 0;
3113 }
3114
3115 /* dispc.irq_lock has to be locked by the caller */
3116 static void _omap_dispc_set_irqs(void)
3117 {
3118         u32 mask;
3119         u32 old_mask;
3120         int i;
3121         struct omap_dispc_isr_data *isr_data;
3122
3123         mask = dispc.irq_error_mask;
3124
3125         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
3126                 isr_data = &dispc.registered_isr[i];
3127
3128                 if (isr_data->isr == NULL)
3129                         continue;
3130
3131                 mask |= isr_data->mask;
3132         }
3133
3134         old_mask = dispc_read_reg(DISPC_IRQENABLE);
3135         /* clear the irqstatus for newly enabled irqs */
3136         dispc_write_reg(DISPC_IRQSTATUS, (mask ^ old_mask) & mask);
3137
3138         dispc_write_reg(DISPC_IRQENABLE, mask);
3139 }
3140
3141 int omap_dispc_register_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
3142 {
3143         int i;
3144         int ret;
3145         unsigned long flags;
3146         struct omap_dispc_isr_data *isr_data;
3147
3148         if (isr == NULL)
3149                 return -EINVAL;
3150
3151         spin_lock_irqsave(&dispc.irq_lock, flags);
3152
3153         /* check for duplicate entry */
3154         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
3155                 isr_data = &dispc.registered_isr[i];
3156                 if (isr_data->isr == isr && isr_data->arg == arg &&
3157                                 isr_data->mask == mask) {
3158                         ret = -EINVAL;
3159                         goto err;
3160                 }
3161         }
3162
3163         isr_data = NULL;
3164         ret = -EBUSY;
3165
3166         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
3167                 isr_data = &dispc.registered_isr[i];
3168
3169                 if (isr_data->isr != NULL)
3170                         continue;
3171
3172                 isr_data->isr = isr;
3173                 isr_data->arg = arg;
3174                 isr_data->mask = mask;
3175                 ret = 0;
3176
3177                 break;
3178         }
3179
3180         if (ret)
3181                 goto err;
3182
3183         _omap_dispc_set_irqs();
3184
3185         spin_unlock_irqrestore(&dispc.irq_lock, flags);
3186
3187         return 0;
3188 err:
3189         spin_unlock_irqrestore(&dispc.irq_lock, flags);
3190
3191         return ret;
3192 }
3193 EXPORT_SYMBOL(omap_dispc_register_isr);
3194
3195 int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
3196 {
3197         int i;
3198         unsigned long flags;
3199         int ret = -EINVAL;
3200         struct omap_dispc_isr_data *isr_data;
3201
3202         spin_lock_irqsave(&dispc.irq_lock, flags);
3203
3204         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
3205                 isr_data = &dispc.registered_isr[i];
3206                 if (isr_data->isr != isr || isr_data->arg != arg ||
3207                                 isr_data->mask != mask)
3208                         continue;
3209
3210                 /* found the correct isr */
3211
3212                 isr_data->isr = NULL;
3213                 isr_data->arg = NULL;
3214                 isr_data->mask = 0;
3215
3216                 ret = 0;
3217                 break;
3218         }
3219
3220         if (ret == 0)
3221                 _omap_dispc_set_irqs();
3222
3223         spin_unlock_irqrestore(&dispc.irq_lock, flags);
3224
3225         return ret;
3226 }
3227 EXPORT_SYMBOL(omap_dispc_unregister_isr);
3228
3229 #ifdef DEBUG
3230 static void print_irq_status(u32 status)
3231 {
3232         if ((status & dispc.irq_error_mask) == 0)
3233                 return;
3234
3235         printk(KERN_DEBUG "DISPC IRQ: 0x%x: ", status);
3236
3237 #define PIS(x) \
3238         if (status & DISPC_IRQ_##x) \
3239                 printk(#x " ");
3240         PIS(GFX_FIFO_UNDERFLOW);
3241         PIS(OCP_ERR);
3242         PIS(VID1_FIFO_UNDERFLOW);
3243         PIS(VID2_FIFO_UNDERFLOW);
3244         PIS(SYNC_LOST);
3245         PIS(SYNC_LOST_DIGIT);
3246         if (dss_has_feature(FEAT_MGR_LCD2))
3247                 PIS(SYNC_LOST2);
3248 #undef PIS
3249
3250         printk("\n");
3251 }
3252 #endif
3253
3254 /* Called from dss.c. Note that we don't touch clocks here,
3255  * but we presume they are on because we got an IRQ. However,
3256  * an irq handler may turn the clocks off, so we may not have
3257  * clock later in the function. */
3258 static irqreturn_t omap_dispc_irq_handler(int irq, void *arg)
3259 {
3260         int i;
3261         u32 irqstatus, irqenable;
3262         u32 handledirqs = 0;
3263         u32 unhandled_errors;
3264         struct omap_dispc_isr_data *isr_data;
3265         struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
3266
3267         spin_lock(&dispc.irq_lock);
3268
3269         irqstatus = dispc_read_reg(DISPC_IRQSTATUS);
3270         irqenable = dispc_read_reg(DISPC_IRQENABLE);
3271
3272         /* IRQ is not for us */
3273         if (!(irqstatus & irqenable)) {
3274                 spin_unlock(&dispc.irq_lock);
3275                 return IRQ_NONE;
3276         }
3277
3278 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
3279         spin_lock(&dispc.irq_stats_lock);
3280         dispc.irq_stats.irq_count++;
3281         dss_collect_irq_stats(irqstatus, dispc.irq_stats.irqs);
3282         spin_unlock(&dispc.irq_stats_lock);
3283 #endif
3284
3285 #ifdef DEBUG
3286         if (dss_debug)
3287                 print_irq_status(irqstatus);
3288 #endif
3289         /* Ack the interrupt. Do it here before clocks are possibly turned
3290          * off */
3291         dispc_write_reg(DISPC_IRQSTATUS, irqstatus);
3292         /* flush posted write */
3293         dispc_read_reg(DISPC_IRQSTATUS);
3294
3295         /* make a copy and unlock, so that isrs can unregister
3296          * themselves */
3297         memcpy(registered_isr, dispc.registered_isr,
3298                         sizeof(registered_isr));
3299
3300         spin_unlock(&dispc.irq_lock);
3301
3302         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
3303                 isr_data = &registered_isr[i];
3304
3305                 if (!isr_data->isr)
3306                         continue;
3307
3308                 if (isr_data->mask & irqstatus) {
3309                         isr_data->isr(isr_data->arg, irqstatus);
3310                         handledirqs |= isr_data->mask;
3311                 }
3312         }
3313
3314         spin_lock(&dispc.irq_lock);
3315
3316         unhandled_errors = irqstatus & ~handledirqs & dispc.irq_error_mask;
3317
3318         if (unhandled_errors) {
3319                 dispc.error_irqs |= unhandled_errors;
3320
3321                 dispc.irq_error_mask &= ~unhandled_errors;
3322                 _omap_dispc_set_irqs();
3323
3324                 schedule_work(&dispc.error_work);
3325         }
3326
3327         spin_unlock(&dispc.irq_lock);
3328
3329         return IRQ_HANDLED;
3330 }
3331
3332 static void dispc_error_worker(struct work_struct *work)
3333 {
3334         int i;
3335         u32 errors;
3336         unsigned long flags;
3337
3338         spin_lock_irqsave(&dispc.irq_lock, flags);
3339         errors = dispc.error_irqs;
3340         dispc.error_irqs = 0;
3341         spin_unlock_irqrestore(&dispc.irq_lock, flags);
3342
3343         dispc_runtime_get();
3344
3345         if (errors & DISPC_IRQ_GFX_FIFO_UNDERFLOW) {
3346                 DSSERR("GFX_FIFO_UNDERFLOW, disabling GFX\n");
3347                 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
3348                         struct omap_overlay *ovl;
3349                         ovl = omap_dss_get_overlay(i);
3350
3351                         if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
3352                                 continue;
3353
3354                         if (ovl->id == 0) {
3355                                 dispc_enable_plane(ovl->id, 0);
3356                                 dispc_go(ovl->manager->id);
3357                                 mdelay(50);
3358                                 break;
3359                         }
3360                 }
3361         }
3362
3363         if (errors & DISPC_IRQ_VID1_FIFO_UNDERFLOW) {
3364                 DSSERR("VID1_FIFO_UNDERFLOW, disabling VID1\n");
3365                 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
3366                         struct omap_overlay *ovl;
3367                         ovl = omap_dss_get_overlay(i);
3368
3369                         if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
3370                                 continue;
3371
3372                         if (ovl->id == 1) {
3373                                 dispc_enable_plane(ovl->id, 0);
3374                                 dispc_go(ovl->manager->id);
3375                                 mdelay(50);
3376                                 break;
3377                         }
3378                 }
3379         }
3380
3381         if (errors & DISPC_IRQ_VID2_FIFO_UNDERFLOW) {
3382                 DSSERR("VID2_FIFO_UNDERFLOW, disabling VID2\n");
3383                 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
3384                         struct omap_overlay *ovl;
3385                         ovl = omap_dss_get_overlay(i);
3386
3387                         if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
3388                                 continue;
3389
3390                         if (ovl->id == 2) {
3391                                 dispc_enable_plane(ovl->id, 0);
3392                                 dispc_go(ovl->manager->id);
3393                                 mdelay(50);
3394                                 break;
3395                         }
3396                 }
3397         }
3398
3399         if (errors & DISPC_IRQ_SYNC_LOST) {
3400                 struct omap_overlay_manager *manager = NULL;
3401                 bool enable = false;
3402
3403                 DSSERR("SYNC_LOST, disabling LCD\n");
3404
3405                 for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
3406                         struct omap_overlay_manager *mgr;
3407                         mgr = omap_dss_get_overlay_manager(i);
3408
3409                         if (mgr->id == OMAP_DSS_CHANNEL_LCD) {
3410                                 manager = mgr;
3411                                 enable = mgr->device->state ==
3412                                                 OMAP_DSS_DISPLAY_ACTIVE;
3413                                 mgr->device->driver->disable(mgr->device);
3414                                 break;
3415                         }
3416                 }
3417
3418                 if (manager) {
3419                         struct omap_dss_device *dssdev = manager->device;
3420                         for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
3421                                 struct omap_overlay *ovl;
3422                                 ovl = omap_dss_get_overlay(i);
3423
3424                                 if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
3425                                         continue;
3426
3427                                 if (ovl->id != 0 && ovl->manager == manager)
3428                                         dispc_enable_plane(ovl->id, 0);
3429                         }
3430
3431                         dispc_go(manager->id);
3432                         mdelay(50);
3433                         if (enable)
3434                                 dssdev->driver->enable(dssdev);
3435                 }
3436         }
3437
3438         if (errors & DISPC_IRQ_SYNC_LOST_DIGIT) {
3439                 struct omap_overlay_manager *manager = NULL;
3440                 bool enable = false;
3441
3442                 DSSERR("SYNC_LOST_DIGIT, disabling TV\n");
3443
3444                 for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
3445                         struct omap_overlay_manager *mgr;
3446                         mgr = omap_dss_get_overlay_manager(i);
3447
3448                         if (mgr->id == OMAP_DSS_CHANNEL_DIGIT) {
3449                                 manager = mgr;
3450                                 enable = mgr->device->state ==
3451                                                 OMAP_DSS_DISPLAY_ACTIVE;
3452                                 mgr->device->driver->disable(mgr->device);
3453                                 break;
3454                         }
3455                 }
3456
3457                 if (manager) {
3458                         struct omap_dss_device *dssdev = manager->device;
3459                         for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
3460                                 struct omap_overlay *ovl;
3461                                 ovl = omap_dss_get_overlay(i);
3462
3463                                 if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
3464                                         continue;
3465
3466                                 if (ovl->id != 0 && ovl->manager == manager)
3467                                         dispc_enable_plane(ovl->id, 0);
3468                         }
3469
3470                         dispc_go(manager->id);
3471                         mdelay(50);
3472                         if (enable)
3473                                 dssdev->driver->enable(dssdev);
3474                 }
3475         }
3476
3477         if (errors & DISPC_IRQ_SYNC_LOST2) {
3478                 struct omap_overlay_manager *manager = NULL;
3479                 bool enable = false;
3480
3481                 DSSERR("SYNC_LOST for LCD2, disabling LCD2\n");
3482
3483                 for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
3484                         struct omap_overlay_manager *mgr;
3485                         mgr = omap_dss_get_overlay_manager(i);
3486
3487                         if (mgr->id == OMAP_DSS_CHANNEL_LCD2) {
3488                                 manager = mgr;
3489                                 enable = mgr->device->state ==
3490                                                 OMAP_DSS_DISPLAY_ACTIVE;
3491                                 mgr->device->driver->disable(mgr->device);
3492                                 break;
3493                         }
3494                 }
3495
3496                 if (manager) {
3497                         struct omap_dss_device *dssdev = manager->device;
3498                         for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
3499                                 struct omap_overlay *ovl;
3500                                 ovl = omap_dss_get_overlay(i);
3501
3502                                 if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
3503                                         continue;
3504
3505                                 if (ovl->id != 0 && ovl->manager == manager)
3506                                         dispc_enable_plane(ovl->id, 0);
3507                         }
3508
3509                         dispc_go(manager->id);
3510                         mdelay(50);
3511                         if (enable)
3512                                 dssdev->driver->enable(dssdev);
3513                 }
3514         }
3515
3516         if (errors & DISPC_IRQ_OCP_ERR) {
3517                 DSSERR("OCP_ERR\n");
3518                 for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
3519                         struct omap_overlay_manager *mgr;
3520                         mgr = omap_dss_get_overlay_manager(i);
3521
3522                         if (mgr->caps & OMAP_DSS_OVL_CAP_DISPC)
3523                                 mgr->device->driver->disable(mgr->device);
3524                 }
3525         }
3526
3527         spin_lock_irqsave(&dispc.irq_lock, flags);
3528         dispc.irq_error_mask |= errors;
3529         _omap_dispc_set_irqs();
3530         spin_unlock_irqrestore(&dispc.irq_lock, flags);
3531
3532         dispc_runtime_put();
3533 }
3534
3535 int omap_dispc_wait_for_irq_timeout(u32 irqmask, unsigned long timeout)
3536 {
3537         void dispc_irq_wait_handler(void *data, u32 mask)
3538         {
3539                 complete((struct completion *)data);
3540         }
3541
3542         int r;
3543         DECLARE_COMPLETION_ONSTACK(completion);
3544
3545         r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion,
3546                         irqmask);
3547
3548         if (r)
3549                 return r;
3550
3551         timeout = wait_for_completion_timeout(&completion, timeout);
3552
3553         omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask);
3554
3555         if (timeout == 0)
3556                 return -ETIMEDOUT;
3557
3558         if (timeout == -ERESTARTSYS)
3559                 return -ERESTARTSYS;
3560
3561         return 0;
3562 }
3563
3564 int omap_dispc_wait_for_irq_interruptible_timeout(u32 irqmask,
3565                 unsigned long timeout)
3566 {
3567         void dispc_irq_wait_handler(void *data, u32 mask)
3568         {
3569                 complete((struct completion *)data);
3570         }
3571
3572         int r;
3573         DECLARE_COMPLETION_ONSTACK(completion);
3574
3575         r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion,
3576                         irqmask);
3577
3578         if (r)
3579                 return r;
3580
3581         timeout = wait_for_completion_interruptible_timeout(&completion,
3582                         timeout);
3583
3584         omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask);
3585
3586         if (timeout == 0)
3587                 return -ETIMEDOUT;
3588
3589         if (timeout == -ERESTARTSYS)
3590                 return -ERESTARTSYS;
3591
3592         return 0;
3593 }
3594
3595 #ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC
3596 void dispc_fake_vsync_irq(void)
3597 {
3598         u32 irqstatus = DISPC_IRQ_VSYNC;
3599         int i;
3600
3601         WARN_ON(!in_interrupt());
3602
3603         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
3604                 struct omap_dispc_isr_data *isr_data;
3605                 isr_data = &dispc.registered_isr[i];
3606
3607                 if (!isr_data->isr)
3608                         continue;
3609
3610                 if (isr_data->mask & irqstatus)
3611                         isr_data->isr(isr_data->arg, irqstatus);
3612         }
3613 }
3614 #endif
3615
3616 static void _omap_dispc_initialize_irq(void)
3617 {
3618         unsigned long flags;
3619
3620         spin_lock_irqsave(&dispc.irq_lock, flags);
3621
3622         memset(dispc.registered_isr, 0, sizeof(dispc.registered_isr));
3623
3624         dispc.irq_error_mask = DISPC_IRQ_MASK_ERROR;
3625         if (dss_has_feature(FEAT_MGR_LCD2))
3626                 dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST2;
3627
3628         /* there's SYNC_LOST_DIGIT waiting after enabling the DSS,
3629          * so clear it */
3630         dispc_write_reg(DISPC_IRQSTATUS, dispc_read_reg(DISPC_IRQSTATUS));
3631
3632         _omap_dispc_set_irqs();
3633
3634         spin_unlock_irqrestore(&dispc.irq_lock, flags);
3635 }
3636
3637 void dispc_enable_sidle(void)
3638 {
3639         REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3);  /* SIDLEMODE: smart idle */
3640 }
3641
3642 void dispc_disable_sidle(void)
3643 {
3644         REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3);  /* SIDLEMODE: no idle */
3645 }
3646
3647 static void _omap_dispc_initial_config(void)
3648 {
3649         u32 l;
3650
3651         /* Exclusively enable DISPC_CORE_CLK and set divider to 1 */
3652         if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
3653                 l = dispc_read_reg(DISPC_DIVISOR);
3654                 /* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */
3655                 l = FLD_MOD(l, 1, 0, 0);
3656                 l = FLD_MOD(l, 1, 23, 16);
3657                 dispc_write_reg(DISPC_DIVISOR, l);
3658         }
3659
3660         /* FUNCGATED */
3661         if (dss_has_feature(FEAT_FUNCGATED))
3662                 REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9);
3663
3664         /* L3 firewall setting: enable access to OCM RAM */
3665         /* XXX this should be somewhere in plat-omap */
3666         if (cpu_is_omap24xx())
3667                 __raw_writel(0x402000b0, OMAP2_L3_IO_ADDRESS(0x680050a0));
3668
3669         _dispc_setup_color_conv_coef();
3670
3671         dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY);
3672
3673         dispc_read_plane_fifo_sizes();
3674
3675         dispc_configure_burst_sizes();
3676 }
3677
3678 /* DISPC HW IP initialisation */
3679 static int omap_dispchw_probe(struct platform_device *pdev)
3680 {
3681         u32 rev;
3682         int r = 0;
3683         struct resource *dispc_mem;
3684         struct clk *clk;
3685
3686         dispc.pdev = pdev;
3687
3688         clk = clk_get(&pdev->dev, "fck");
3689         if (IS_ERR(clk)) {
3690                 DSSERR("can't get fck\n");
3691                 r = PTR_ERR(clk);
3692                 goto err_get_clk;
3693         }
3694
3695         dispc.dss_clk = clk;
3696
3697         spin_lock_init(&dispc.irq_lock);
3698
3699 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
3700         spin_lock_init(&dispc.irq_stats_lock);
3701         dispc.irq_stats.last_reset = jiffies;
3702 #endif
3703
3704         INIT_WORK(&dispc.error_work, dispc_error_worker);
3705
3706         dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0);
3707         if (!dispc_mem) {
3708                 DSSERR("can't get IORESOURCE_MEM DISPC\n");
3709                 r = -EINVAL;
3710                 goto err_ioremap;
3711         }
3712         dispc.base = ioremap(dispc_mem->start, resource_size(dispc_mem));
3713         if (!dispc.base) {
3714                 DSSERR("can't ioremap DISPC\n");
3715                 r = -ENOMEM;
3716                 goto err_ioremap;
3717         }
3718         dispc.irq = platform_get_irq(dispc.pdev, 0);
3719         if (dispc.irq < 0) {
3720                 DSSERR("platform_get_irq failed\n");
3721                 r = -ENODEV;
3722                 goto err_irq;
3723         }
3724
3725         r = request_irq(dispc.irq, omap_dispc_irq_handler, IRQF_SHARED,
3726                 "OMAP DISPC", dispc.pdev);
3727         if (r < 0) {
3728                 DSSERR("request_irq failed\n");
3729                 goto err_irq;
3730         }
3731
3732         pm_runtime_enable(&pdev->dev);
3733
3734         r = dispc_runtime_get();
3735         if (r)
3736                 goto err_runtime_get;
3737
3738         _omap_dispc_initial_config();
3739
3740         _omap_dispc_initialize_irq();
3741
3742         rev = dispc_read_reg(DISPC_REVISION);
3743         dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n",
3744                FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
3745
3746         dispc_runtime_put();
3747
3748         return 0;
3749
3750 err_runtime_get:
3751         pm_runtime_disable(&pdev->dev);
3752         free_irq(dispc.irq, dispc.pdev);
3753 err_irq:
3754         iounmap(dispc.base);
3755 err_ioremap:
3756         clk_put(dispc.dss_clk);
3757 err_get_clk:
3758         return r;
3759 }
3760
3761 static int omap_dispchw_remove(struct platform_device *pdev)
3762 {
3763         pm_runtime_disable(&pdev->dev);
3764
3765         clk_put(dispc.dss_clk);
3766
3767         free_irq(dispc.irq, dispc.pdev);
3768         iounmap(dispc.base);
3769         return 0;
3770 }
3771
3772 static int dispc_runtime_suspend(struct device *dev)
3773 {
3774         dispc_save_context();
3775         clk_disable(dispc.dss_clk);
3776         dss_runtime_put();
3777
3778         return 0;
3779 }
3780
3781 static int dispc_runtime_resume(struct device *dev)
3782 {
3783         int r;
3784
3785         r = dss_runtime_get();
3786         if (r < 0)
3787                 return r;
3788
3789         clk_enable(dispc.dss_clk);
3790         dispc_restore_context();
3791
3792         return 0;
3793 }
3794
3795 static const struct dev_pm_ops dispc_pm_ops = {
3796         .runtime_suspend = dispc_runtime_suspend,
3797         .runtime_resume = dispc_runtime_resume,
3798 };
3799
3800 static struct platform_driver omap_dispchw_driver = {
3801         .probe          = omap_dispchw_probe,
3802         .remove         = omap_dispchw_remove,
3803         .driver         = {
3804                 .name   = "omapdss_dispc",
3805                 .owner  = THIS_MODULE,
3806                 .pm     = &dispc_pm_ops,
3807         },
3808 };
3809
3810 int dispc_init_platform_driver(void)
3811 {
3812         return platform_driver_register(&omap_dispchw_driver);
3813 }
3814
3815 void dispc_uninit_platform_driver(void)
3816 {
3817         return platform_driver_unregister(&omap_dispchw_driver);
3818 }