qemu/hw/display/exynos4210_fimd.c
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   1/*
   2 * Samsung exynos4210 Display Controller (FIMD)
   3 *
   4 * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd.
   5 * All rights reserved.
   6 * Based on LCD controller for Samsung S5PC1xx-based board emulation
   7 * by Kirill Batuzov <batuzovk@ispras.ru>
   8 *
   9 * Contributed by Mitsyanko Igor <i.mitsyanko@samsung.com>
  10 *
  11 * This program is free software; you can redistribute it and/or modify it
  12 * under the terms of the GNU General Public License as published by the
  13 * Free Software Foundation; either version 2 of the License, or (at your
  14 * option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  19 * See the GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License along
  22 * with this program; if not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25#include "qemu/osdep.h"
  26#include "hw/hw.h"
  27#include "hw/irq.h"
  28#include "hw/sysbus.h"
  29#include "migration/vmstate.h"
  30#include "ui/console.h"
  31#include "ui/pixel_ops.h"
  32#include "qemu/bswap.h"
  33#include "qemu/module.h"
  34#include "qemu/log.h"
  35#include "qom/object.h"
  36
  37/* Debug messages configuration */
  38#define EXYNOS4210_FIMD_DEBUG              0
  39#define EXYNOS4210_FIMD_MODE_TRACE         0
  40
  41#if EXYNOS4210_FIMD_DEBUG == 0
  42    #define DPRINT_L1(fmt, args...)       do { } while (0)
  43    #define DPRINT_L2(fmt, args...)       do { } while (0)
  44#elif EXYNOS4210_FIMD_DEBUG == 1
  45    #define DPRINT_L1(fmt, args...) \
  46        do {fprintf(stderr, "QEMU FIMD: "fmt, ## args); } while (0)
  47    #define DPRINT_L2(fmt, args...)       do { } while (0)
  48#else
  49    #define DPRINT_L1(fmt, args...) \
  50        do {fprintf(stderr, "QEMU FIMD: "fmt, ## args); } while (0)
  51    #define DPRINT_L2(fmt, args...) \
  52        do {fprintf(stderr, "QEMU FIMD: "fmt, ## args); } while (0)
  53#endif
  54
  55#if EXYNOS4210_FIMD_MODE_TRACE == 0
  56    #define DPRINT_TRACE(fmt, args...)        do { } while (0)
  57#else
  58    #define DPRINT_TRACE(fmt, args...)        \
  59        do {fprintf(stderr, "QEMU FIMD: "fmt, ## args); } while (0)
  60#endif
  61
  62#define NUM_OF_WINDOWS              5
  63#define FIMD_REGS_SIZE              0x4114
  64
  65/* Video main control registers */
  66#define FIMD_VIDCON0                0x0000
  67#define FIMD_VIDCON1                0x0004
  68#define FIMD_VIDCON2                0x0008
  69#define FIMD_VIDCON3                0x000C
  70#define FIMD_VIDCON0_ENVID_F        (1 << 0)
  71#define FIMD_VIDCON0_ENVID          (1 << 1)
  72#define FIMD_VIDCON0_ENVID_MASK     ((1 << 0) | (1 << 1))
  73#define FIMD_VIDCON1_ROMASK         0x07FFE000
  74
  75/* Video time control registers */
  76#define FIMD_VIDTCON_START          0x10
  77#define FIMD_VIDTCON_END            0x1C
  78#define FIMD_VIDTCON2_SIZE_MASK     0x07FF
  79#define FIMD_VIDTCON2_HOR_SHIFT     0
  80#define FIMD_VIDTCON2_VER_SHIFT     11
  81
  82/* Window control registers */
  83#define FIMD_WINCON_START           0x0020
  84#define FIMD_WINCON_END             0x0030
  85#define FIMD_WINCON_ROMASK          0x82200000
  86#define FIMD_WINCON_ENWIN           (1 << 0)
  87#define FIMD_WINCON_BLD_PIX         (1 << 6)
  88#define FIMD_WINCON_ALPHA_MUL       (1 << 7)
  89#define FIMD_WINCON_ALPHA_SEL       (1 << 1)
  90#define FIMD_WINCON_SWAP            0x078000
  91#define FIMD_WINCON_SWAP_SHIFT      15
  92#define FIMD_WINCON_SWAP_WORD       0x1
  93#define FIMD_WINCON_SWAP_HWORD      0x2
  94#define FIMD_WINCON_SWAP_BYTE       0x4
  95#define FIMD_WINCON_SWAP_BITS       0x8
  96#define FIMD_WINCON_BUFSTAT_L       (1 << 21)
  97#define FIMD_WINCON_BUFSTAT_H       (1 << 31)
  98#define FIMD_WINCON_BUFSTATUS       ((1 << 21) | (1 << 31))
  99#define FIMD_WINCON_BUF0_STAT       ((0 << 21) | (0 << 31))
 100#define FIMD_WINCON_BUF1_STAT       ((1 << 21) | (0 << 31))
 101#define FIMD_WINCON_BUF2_STAT       ((0 << 21) | (1U << 31))
 102#define FIMD_WINCON_BUFSELECT       ((1 << 20) | (1 << 30))
 103#define FIMD_WINCON_BUF0_SEL        ((0 << 20) | (0 << 30))
 104#define FIMD_WINCON_BUF1_SEL        ((1 << 20) | (0 << 30))
 105#define FIMD_WINCON_BUF2_SEL        ((0 << 20) | (1 << 30))
 106#define FIMD_WINCON_BUFMODE         (1 << 14)
 107#define IS_PALETTIZED_MODE(w)       (w->wincon & 0xC)
 108#define PAL_MODE_WITH_ALPHA(x)       ((x) == 7)
 109#define WIN_BPP_MODE(w)             ((w->wincon >> 2) & 0xF)
 110#define WIN_BPP_MODE_WITH_ALPHA(w)     \
 111    (WIN_BPP_MODE(w) == 0xD || WIN_BPP_MODE(w) == 0xE)
 112
 113/* Shadow control register */
 114#define FIMD_SHADOWCON              0x0034
 115#define FIMD_WINDOW_PROTECTED(s, w) ((s) & (1 << (10 + (w))))
 116/* Channel mapping control register */
 117#define FIMD_WINCHMAP               0x003C
 118
 119/* Window position control registers */
 120#define FIMD_VIDOSD_START           0x0040
 121#define FIMD_VIDOSD_END             0x0088
 122#define FIMD_VIDOSD_COORD_MASK      0x07FF
 123#define FIMD_VIDOSD_HOR_SHIFT       11
 124#define FIMD_VIDOSD_VER_SHIFT       0
 125#define FIMD_VIDOSD_ALPHA_AEN0      0xFFF000
 126#define FIMD_VIDOSD_AEN0_SHIFT      12
 127#define FIMD_VIDOSD_ALPHA_AEN1      0x000FFF
 128
 129/* Frame buffer address registers */
 130#define FIMD_VIDWADD0_START         0x00A0
 131#define FIMD_VIDWADD0_END           0x00C4
 132#define FIMD_VIDWADD0_END           0x00C4
 133#define FIMD_VIDWADD1_START         0x00D0
 134#define FIMD_VIDWADD1_END           0x00F4
 135#define FIMD_VIDWADD2_START         0x0100
 136#define FIMD_VIDWADD2_END           0x0110
 137#define FIMD_VIDWADD2_PAGEWIDTH     0x1FFF
 138#define FIMD_VIDWADD2_OFFSIZE       0x1FFF
 139#define FIMD_VIDWADD2_OFFSIZE_SHIFT 13
 140#define FIMD_VIDW0ADD0_B2           0x20A0
 141#define FIMD_VIDW4ADD0_B2           0x20C0
 142
 143/* Video interrupt control registers */
 144#define FIMD_VIDINTCON0             0x130
 145#define FIMD_VIDINTCON1             0x134
 146
 147/* Window color key registers */
 148#define FIMD_WKEYCON_START          0x140
 149#define FIMD_WKEYCON_END            0x15C
 150#define FIMD_WKEYCON0_COMPKEY       0x00FFFFFF
 151#define FIMD_WKEYCON0_CTL_SHIFT     24
 152#define FIMD_WKEYCON0_DIRCON        (1 << 24)
 153#define FIMD_WKEYCON0_KEYEN         (1 << 25)
 154#define FIMD_WKEYCON0_KEYBLEN       (1 << 26)
 155/* Window color key alpha control register */
 156#define FIMD_WKEYALPHA_START        0x160
 157#define FIMD_WKEYALPHA_END          0x16C
 158
 159/* Dithering control register */
 160#define FIMD_DITHMODE               0x170
 161
 162/* Window alpha control registers */
 163#define FIMD_VIDALPHA_ALPHA_LOWER   0x000F0F0F
 164#define FIMD_VIDALPHA_ALPHA_UPPER   0x00F0F0F0
 165#define FIMD_VIDWALPHA_START        0x21C
 166#define FIMD_VIDWALPHA_END          0x240
 167
 168/* Window color map registers */
 169#define FIMD_WINMAP_START           0x180
 170#define FIMD_WINMAP_END             0x190
 171#define FIMD_WINMAP_EN              (1 << 24)
 172#define FIMD_WINMAP_COLOR_MASK      0x00FFFFFF
 173
 174/* Window palette control registers */
 175#define FIMD_WPALCON_HIGH           0x019C
 176#define FIMD_WPALCON_LOW            0x01A0
 177#define FIMD_WPALCON_UPDATEEN       (1 << 9)
 178#define FIMD_WPAL_W0PAL_L           0x07
 179#define FIMD_WPAL_W0PAL_L_SHT        0
 180#define FIMD_WPAL_W1PAL_L           0x07
 181#define FIMD_WPAL_W1PAL_L_SHT       3
 182#define FIMD_WPAL_W2PAL_L           0x01
 183#define FIMD_WPAL_W2PAL_L_SHT       6
 184#define FIMD_WPAL_W2PAL_H           0x06
 185#define FIMD_WPAL_W2PAL_H_SHT       8
 186#define FIMD_WPAL_W3PAL_L           0x01
 187#define FIMD_WPAL_W3PAL_L_SHT       7
 188#define FIMD_WPAL_W3PAL_H           0x06
 189#define FIMD_WPAL_W3PAL_H_SHT       12
 190#define FIMD_WPAL_W4PAL_L           0x01
 191#define FIMD_WPAL_W4PAL_L_SHT       8
 192#define FIMD_WPAL_W4PAL_H           0x06
 193#define FIMD_WPAL_W4PAL_H_SHT       16
 194
 195/* Trigger control registers */
 196#define FIMD_TRIGCON                0x01A4
 197#define FIMD_TRIGCON_ROMASK         0x00000004
 198
 199/* LCD I80 Interface Control */
 200#define FIMD_I80IFCON_START         0x01B0
 201#define FIMD_I80IFCON_END           0x01BC
 202/* Color gain control register */
 203#define FIMD_COLORGAINCON           0x01C0
 204/* LCD i80 Interface Command Control */
 205#define FIMD_LDI_CMDCON0            0x01D0
 206#define FIMD_LDI_CMDCON1            0x01D4
 207/* I80 System Interface Manual Command Control */
 208#define FIMD_SIFCCON0               0x01E0
 209#define FIMD_SIFCCON2               0x01E8
 210
 211/* Hue Control Registers */
 212#define FIMD_HUECOEFCR_START        0x01EC
 213#define FIMD_HUECOEFCR_END          0x01F4
 214#define FIMD_HUECOEFCB_START        0x01FC
 215#define FIMD_HUECOEFCB_END          0x0208
 216#define FIMD_HUEOFFSET              0x020C
 217
 218/* Video interrupt control registers */
 219#define FIMD_VIDINT_INTFIFOPEND     (1 << 0)
 220#define FIMD_VIDINT_INTFRMPEND      (1 << 1)
 221#define FIMD_VIDINT_INTI80PEND      (1 << 2)
 222#define FIMD_VIDINT_INTEN           (1 << 0)
 223#define FIMD_VIDINT_INTFIFOEN       (1 << 1)
 224#define FIMD_VIDINT_INTFRMEN        (1 << 12)
 225#define FIMD_VIDINT_I80IFDONE       (1 << 17)
 226
 227/* Window blend equation control registers */
 228#define FIMD_BLENDEQ_START          0x0244
 229#define FIMD_BLENDEQ_END            0x0250
 230#define FIMD_BLENDCON               0x0260
 231#define FIMD_ALPHA_8BIT             (1 << 0)
 232#define FIMD_BLENDEQ_COEF_MASK      0xF
 233
 234/* Window RTQOS Control Registers */
 235#define FIMD_WRTQOSCON_START        0x0264
 236#define FIMD_WRTQOSCON_END          0x0274
 237
 238/* LCD I80 Interface Command */
 239#define FIMD_I80IFCMD_START         0x0280
 240#define FIMD_I80IFCMD_END           0x02AC
 241
 242/* Shadow windows control registers */
 243#define FIMD_SHD_ADD0_START         0x40A0
 244#define FIMD_SHD_ADD0_END           0x40C0
 245#define FIMD_SHD_ADD1_START         0x40D0
 246#define FIMD_SHD_ADD1_END           0x40F0
 247#define FIMD_SHD_ADD2_START         0x4100
 248#define FIMD_SHD_ADD2_END           0x4110
 249
 250/* Palette memory */
 251#define FIMD_PAL_MEM_START          0x2400
 252#define FIMD_PAL_MEM_END            0x37FC
 253/* Palette memory aliases for windows 0 and 1 */
 254#define FIMD_PALMEM_AL_START        0x0400
 255#define FIMD_PALMEM_AL_END          0x0BFC
 256
 257typedef struct {
 258    uint8_t r, g, b;
 259    /* D[31..24]dummy, D[23..16]rAlpha, D[15..8]gAlpha, D[7..0]bAlpha */
 260    uint32_t a;
 261} rgba;
 262#define RGBA_SIZE  7
 263
 264typedef void pixel_to_rgb_func(uint32_t pixel, rgba *p);
 265typedef struct Exynos4210fimdWindow Exynos4210fimdWindow;
 266
 267struct Exynos4210fimdWindow {
 268    uint32_t wincon;        /* Window control register */
 269    uint32_t buf_start[3];  /* Start address for video frame buffer */
 270    uint32_t buf_end[3];    /* End address for video frame buffer */
 271    uint32_t keycon[2];     /* Window color key registers */
 272    uint32_t keyalpha;      /* Color key alpha control register */
 273    uint32_t winmap;        /* Window color map register */
 274    uint32_t blendeq;       /* Window blending equation control register */
 275    uint32_t rtqoscon;      /* Window RTQOS Control Registers */
 276    uint32_t palette[256];  /* Palette RAM */
 277    uint32_t shadow_buf_start;      /* Start address of shadow frame buffer */
 278    uint32_t shadow_buf_end;        /* End address of shadow frame buffer */
 279    uint32_t shadow_buf_size;       /* Virtual shadow screen width */
 280
 281    pixel_to_rgb_func *pixel_to_rgb;
 282    void (*draw_line)(Exynos4210fimdWindow *w, uint8_t *src, uint8_t *dst,
 283            bool blend);
 284    uint32_t (*get_alpha)(Exynos4210fimdWindow *w, uint32_t pix_a);
 285    uint16_t lefttop_x, lefttop_y;   /* VIDOSD0 register */
 286    uint16_t rightbot_x, rightbot_y; /* VIDOSD1 register */
 287    uint32_t osdsize;                /* VIDOSD2&3 register */
 288    uint32_t alpha_val[2];           /* VIDOSD2&3, VIDWALPHA registers */
 289    uint16_t virtpage_width;         /* VIDWADD2 register */
 290    uint16_t virtpage_offsize;       /* VIDWADD2 register */
 291    MemoryRegionSection mem_section; /* RAM fragment containing framebuffer */
 292    uint8_t *host_fb_addr;           /* Host pointer to window's framebuffer */
 293    hwaddr fb_len;       /* Framebuffer length */
 294};
 295
 296#define TYPE_EXYNOS4210_FIMD "exynos4210.fimd"
 297OBJECT_DECLARE_SIMPLE_TYPE(Exynos4210fimdState, EXYNOS4210_FIMD)
 298
 299struct Exynos4210fimdState {
 300    SysBusDevice parent_obj;
 301
 302    MemoryRegion iomem;
 303    QemuConsole *console;
 304    qemu_irq irq[3];
 305
 306    uint32_t vidcon[4];     /* Video main control registers 0-3 */
 307    uint32_t vidtcon[4];    /* Video time control registers 0-3 */
 308    uint32_t shadowcon;     /* Window shadow control register */
 309    uint32_t winchmap;      /* Channel mapping control register */
 310    uint32_t vidintcon[2];  /* Video interrupt control registers */
 311    uint32_t dithmode;      /* Dithering control register */
 312    uint32_t wpalcon[2];    /* Window palette control registers */
 313    uint32_t trigcon;       /* Trigger control register */
 314    uint32_t i80ifcon[4];   /* I80 interface control registers */
 315    uint32_t colorgaincon;  /* Color gain control register */
 316    uint32_t ldi_cmdcon[2]; /* LCD I80 interface command control */
 317    uint32_t sifccon[3];    /* I80 System Interface Manual Command Control */
 318    uint32_t huecoef_cr[4]; /* Hue control registers */
 319    uint32_t huecoef_cb[4]; /* Hue control registers */
 320    uint32_t hueoffset;     /* Hue offset control register */
 321    uint32_t blendcon;      /* Blending control register */
 322    uint32_t i80ifcmd[12];  /* LCD I80 Interface Command */
 323
 324    Exynos4210fimdWindow window[5];    /* Window-specific registers */
 325    uint8_t *ifb;           /* Internal frame buffer */
 326    bool invalidate;        /* Image needs to be redrawn */
 327    bool enabled;           /* Display controller is enabled */
 328};
 329
 330/* Perform byte/halfword/word swap of data according to WINCON */
 331static inline void fimd_swap_data(unsigned int swap_ctl, uint64_t *data)
 332{
 333    int i;
 334    uint64_t res;
 335    uint64_t x = *data;
 336
 337    if (swap_ctl & FIMD_WINCON_SWAP_BITS) {
 338        res = 0;
 339        for (i = 0; i < 64; i++) {
 340            if (x & (1ULL << (63 - i))) {
 341                res |= (1ULL << i);
 342            }
 343        }
 344        x = res;
 345    }
 346
 347    if (swap_ctl & FIMD_WINCON_SWAP_BYTE) {
 348        x = bswap64(x);
 349    }
 350
 351    if (swap_ctl & FIMD_WINCON_SWAP_HWORD) {
 352        x = ((x & 0x000000000000FFFFULL) << 48) |
 353            ((x & 0x00000000FFFF0000ULL) << 16) |
 354            ((x & 0x0000FFFF00000000ULL) >> 16) |
 355            ((x & 0xFFFF000000000000ULL) >> 48);
 356    }
 357
 358    if (swap_ctl & FIMD_WINCON_SWAP_WORD) {
 359        x = ((x & 0x00000000FFFFFFFFULL) << 32) |
 360            ((x & 0xFFFFFFFF00000000ULL) >> 32);
 361    }
 362
 363    *data = x;
 364}
 365
 366/* Conversion routines of Pixel data from frame buffer area to internal RGBA
 367 * pixel representation.
 368 * Every color component internally represented as 8-bit value. If original
 369 * data has less than 8 bit for component, data is extended to 8 bit. For
 370 * example, if blue component has only two possible values 0 and 1 it will be
 371 * extended to 0 and 0xFF */
 372
 373/* One bit for alpha representation */
 374#define DEF_PIXEL_TO_RGB_A1(N, R, G, B) \
 375static void N(uint32_t pixel, rgba *p) \
 376{ \
 377    p->b = ((pixel & ((1 << (B)) - 1)) << (8 - (B))) | \
 378           ((pixel >> (2 * (B) - 8)) & ((1 << (8 - (B))) - 1)); \
 379    pixel >>= (B); \
 380    p->g = (pixel & ((1 << (G)) - 1)) << (8 - (G)) | \
 381           ((pixel >> (2 * (G) - 8)) & ((1 << (8 - (G))) - 1)); \
 382    pixel >>= (G); \
 383    p->r = (pixel & ((1 << (R)) - 1)) << (8 - (R)) | \
 384           ((pixel >> (2 * (R) - 8)) & ((1 << (8 - (R))) - 1)); \
 385    pixel >>= (R); \
 386    p->a = (pixel & 0x1); \
 387}
 388
 389DEF_PIXEL_TO_RGB_A1(pixel_a444_to_rgb, 4, 4, 4)
 390DEF_PIXEL_TO_RGB_A1(pixel_a555_to_rgb, 5, 5, 5)
 391DEF_PIXEL_TO_RGB_A1(pixel_a666_to_rgb, 6, 6, 6)
 392DEF_PIXEL_TO_RGB_A1(pixel_a665_to_rgb, 6, 6, 5)
 393DEF_PIXEL_TO_RGB_A1(pixel_a888_to_rgb, 8, 8, 8)
 394DEF_PIXEL_TO_RGB_A1(pixel_a887_to_rgb, 8, 8, 7)
 395
 396/* Alpha component is always zero */
 397#define DEF_PIXEL_TO_RGB_A0(N, R, G, B) \
 398static void N(uint32_t pixel, rgba *p) \
 399{ \
 400    p->b = ((pixel & ((1 << (B)) - 1)) << (8 - (B))) | \
 401           ((pixel >> (2 * (B) - 8)) & ((1 << (8 - (B))) - 1)); \
 402    pixel >>= (B); \
 403    p->g = (pixel & ((1 << (G)) - 1)) << (8 - (G)) | \
 404           ((pixel >> (2 * (G) - 8)) & ((1 << (8 - (G))) - 1)); \
 405    pixel >>= (G); \
 406    p->r = (pixel & ((1 << (R)) - 1)) << (8 - (R)) | \
 407           ((pixel >> (2 * (R) - 8)) & ((1 << (8 - (R))) - 1)); \
 408    p->a = 0x0; \
 409}
 410
 411DEF_PIXEL_TO_RGB_A0(pixel_565_to_rgb,  5, 6, 5)
 412DEF_PIXEL_TO_RGB_A0(pixel_555_to_rgb,  5, 5, 5)
 413DEF_PIXEL_TO_RGB_A0(pixel_666_to_rgb,  6, 6, 6)
 414DEF_PIXEL_TO_RGB_A0(pixel_888_to_rgb,  8, 8, 8)
 415
 416/* Alpha component has some meaningful value */
 417#define DEF_PIXEL_TO_RGB_A(N, R, G, B, A) \
 418static void N(uint32_t pixel, rgba *p) \
 419{ \
 420    p->b = ((pixel & ((1 << (B)) - 1)) << (8 - (B))) | \
 421           ((pixel >> (2 * (B) - 8)) & ((1 << (8 - (B))) - 1)); \
 422    pixel >>= (B); \
 423    p->g = (pixel & ((1 << (G)) - 1)) << (8 - (G)) | \
 424           ((pixel >> (2 * (G) - 8)) & ((1 << (8 - (G))) - 1)); \
 425    pixel >>= (G); \
 426    p->r = (pixel & ((1 << (R)) - 1)) << (8 - (R)) | \
 427           ((pixel >> (2 * (R) - 8)) & ((1 << (8 - (R))) - 1)); \
 428    pixel >>= (R); \
 429    p->a = (pixel & ((1 << (A)) - 1)) << (8 - (A)) | \
 430           ((pixel >> (2 * (A) - 8)) & ((1 << (8 - (A))) - 1)); \
 431    p->a = p->a | (p->a << 8) | (p->a << 16); \
 432}
 433
 434DEF_PIXEL_TO_RGB_A(pixel_4444_to_rgb, 4, 4, 4, 4)
 435DEF_PIXEL_TO_RGB_A(pixel_8888_to_rgb, 8, 8, 8, 8)
 436
 437/* Lookup table to extent 2-bit color component to 8 bit */
 438static const uint8_t pixel_lutable_2b[4] = {
 439     0x0, 0x55, 0xAA, 0xFF
 440};
 441/* Lookup table to extent 3-bit color component to 8 bit */
 442static const uint8_t pixel_lutable_3b[8] = {
 443     0x0, 0x24, 0x49, 0x6D, 0x92, 0xB6, 0xDB, 0xFF
 444};
 445/* Special case for a232 bpp mode */
 446static void pixel_a232_to_rgb(uint32_t pixel, rgba *p)
 447{
 448    p->b = pixel_lutable_2b[(pixel & 0x3)];
 449    pixel >>= 2;
 450    p->g = pixel_lutable_3b[(pixel & 0x7)];
 451    pixel >>= 3;
 452    p->r = pixel_lutable_2b[(pixel & 0x3)];
 453    pixel >>= 2;
 454    p->a = (pixel & 0x1);
 455}
 456
 457/* Special case for (5+1, 5+1, 5+1) mode. Data bit 15 is common LSB
 458 * for all three color components */
 459static void pixel_1555_to_rgb(uint32_t pixel, rgba *p)
 460{
 461    uint8_t comm = (pixel >> 15) & 1;
 462    p->b = ((((pixel & 0x1F) << 1) | comm) << 2) | ((pixel >> 3) & 0x3);
 463    pixel >>= 5;
 464    p->g = ((((pixel & 0x1F) << 1) | comm) << 2) | ((pixel >> 3) & 0x3);
 465    pixel >>= 5;
 466    p->r = ((((pixel & 0x1F) << 1) | comm) << 2) | ((pixel >> 3) & 0x3);
 467    p->a = 0x0;
 468}
 469
 470/* Put/get pixel to/from internal LCD Controller framebuffer */
 471
 472static int put_pixel_ifb(const rgba p, uint8_t *d)
 473{
 474    *(uint8_t *)d++ = p.r;
 475    *(uint8_t *)d++ = p.g;
 476    *(uint8_t *)d++ = p.b;
 477    *(uint32_t *)d = p.a;
 478    return RGBA_SIZE;
 479}
 480
 481static int get_pixel_ifb(const uint8_t *s, rgba *p)
 482{
 483    p->r = *(uint8_t *)s++;
 484    p->g = *(uint8_t *)s++;
 485    p->b = *(uint8_t *)s++;
 486    p->a = (*(uint32_t *)s) & 0x00FFFFFF;
 487    return RGBA_SIZE;
 488}
 489
 490static pixel_to_rgb_func *palette_data_format[8] = {
 491    [0] = pixel_565_to_rgb,
 492    [1] = pixel_a555_to_rgb,
 493    [2] = pixel_666_to_rgb,
 494    [3] = pixel_a665_to_rgb,
 495    [4] = pixel_a666_to_rgb,
 496    [5] = pixel_888_to_rgb,
 497    [6] = pixel_a888_to_rgb,
 498    [7] = pixel_8888_to_rgb
 499};
 500
 501/* Returns Index in palette data formats table for given window number WINDOW */
 502static uint32_t
 503exynos4210_fimd_palette_format(Exynos4210fimdState *s, int window)
 504{
 505    uint32_t ret;
 506
 507    switch (window) {
 508    case 0:
 509        ret = (s->wpalcon[1] >> FIMD_WPAL_W0PAL_L_SHT) & FIMD_WPAL_W0PAL_L;
 510        if (ret != 7) {
 511            ret = 6 - ret;
 512        }
 513        break;
 514    case 1:
 515        ret = (s->wpalcon[1] >> FIMD_WPAL_W1PAL_L_SHT) & FIMD_WPAL_W1PAL_L;
 516        if (ret != 7) {
 517            ret = 6 - ret;
 518        }
 519        break;
 520    case 2:
 521        ret = ((s->wpalcon[0] >> FIMD_WPAL_W2PAL_H_SHT) & FIMD_WPAL_W2PAL_H) |
 522            ((s->wpalcon[1] >> FIMD_WPAL_W2PAL_L_SHT) & FIMD_WPAL_W2PAL_L);
 523        break;
 524    case 3:
 525        ret = ((s->wpalcon[0] >> FIMD_WPAL_W3PAL_H_SHT) & FIMD_WPAL_W3PAL_H) |
 526            ((s->wpalcon[1] >> FIMD_WPAL_W3PAL_L_SHT) & FIMD_WPAL_W3PAL_L);
 527        break;
 528    case 4:
 529        ret = ((s->wpalcon[0] >> FIMD_WPAL_W4PAL_H_SHT) & FIMD_WPAL_W4PAL_H) |
 530            ((s->wpalcon[1] >> FIMD_WPAL_W4PAL_L_SHT) & FIMD_WPAL_W4PAL_L);
 531        break;
 532    default:
 533        hw_error("exynos4210.fimd: incorrect window number %d\n", window);
 534        ret = 0;
 535        break;
 536    }
 537    return ret;
 538}
 539
 540#define FIMD_1_MINUS_COLOR(x)    \
 541            ((0xFF - ((x) & 0xFF)) | (0xFF00 - ((x) & 0xFF00)) | \
 542                                  (0xFF0000 - ((x) & 0xFF0000)))
 543#define EXTEND_LOWER_HALFBYTE(x) (((x) & 0xF0F0F) | (((x) << 4) & 0xF0F0F0))
 544#define EXTEND_UPPER_HALFBYTE(x) (((x) & 0xF0F0F0) | (((x) >> 4) & 0xF0F0F))
 545
 546/* Multiply three lower bytes of two 32-bit words with each other.
 547 * Each byte with values 0-255 is considered as a number with possible values
 548 * in a range [0 - 1] */
 549static inline uint32_t fimd_mult_each_byte(uint32_t a, uint32_t b)
 550{
 551    uint32_t tmp;
 552    uint32_t ret;
 553
 554    ret = ((tmp = (((a & 0xFF) * (b & 0xFF)) / 0xFF)) > 0xFF) ? 0xFF : tmp;
 555    ret |= ((tmp = ((((a >> 8) & 0xFF) * ((b >> 8) & 0xFF)) / 0xFF)) > 0xFF) ?
 556            0xFF00 : tmp << 8;
 557    ret |= ((tmp = ((((a >> 16) & 0xFF) * ((b >> 16) & 0xFF)) / 0xFF)) > 0xFF) ?
 558            0xFF0000 : tmp << 16;
 559    return ret;
 560}
 561
 562/* For each corresponding bytes of two 32-bit words: (a*b + c*d)
 563 * Byte values 0-255 are mapped to a range [0 .. 1] */
 564static inline uint32_t
 565fimd_mult_and_sum_each_byte(uint32_t a, uint32_t b, uint32_t c, uint32_t d)
 566{
 567    uint32_t tmp;
 568    uint32_t ret;
 569
 570    ret = ((tmp = (((a & 0xFF) * (b & 0xFF) + (c & 0xFF) * (d & 0xFF)) / 0xFF))
 571            > 0xFF) ? 0xFF : tmp;
 572    ret |= ((tmp = ((((a >> 8) & 0xFF) * ((b >> 8) & 0xFF) + ((c >> 8) & 0xFF) *
 573            ((d >> 8) & 0xFF)) / 0xFF)) > 0xFF) ? 0xFF00 : tmp << 8;
 574    ret |= ((tmp = ((((a >> 16) & 0xFF) * ((b >> 16) & 0xFF) +
 575            ((c >> 16) & 0xFF) * ((d >> 16) & 0xFF)) / 0xFF)) > 0xFF) ?
 576                    0xFF0000 : tmp << 16;
 577    return ret;
 578}
 579
 580/* These routines cover all possible sources of window's transparent factor
 581 * used in blending equation. Choice of routine is affected by WPALCON
 582 * registers, BLENDCON register and window's WINCON register */
 583
 584static uint32_t fimd_get_alpha_pix(Exynos4210fimdWindow *w, uint32_t pix_a)
 585{
 586    return pix_a;
 587}
 588
 589static uint32_t
 590fimd_get_alpha_pix_extlow(Exynos4210fimdWindow *w, uint32_t pix_a)
 591{
 592    return EXTEND_LOWER_HALFBYTE(pix_a);
 593}
 594
 595static uint32_t
 596fimd_get_alpha_pix_exthigh(Exynos4210fimdWindow *w, uint32_t pix_a)
 597{
 598    return EXTEND_UPPER_HALFBYTE(pix_a);
 599}
 600
 601static uint32_t fimd_get_alpha_mult(Exynos4210fimdWindow *w, uint32_t pix_a)
 602{
 603    return fimd_mult_each_byte(pix_a, w->alpha_val[0]);
 604}
 605
 606static uint32_t fimd_get_alpha_mult_ext(Exynos4210fimdWindow *w, uint32_t pix_a)
 607{
 608    return fimd_mult_each_byte(EXTEND_LOWER_HALFBYTE(pix_a),
 609            EXTEND_UPPER_HALFBYTE(w->alpha_val[0]));
 610}
 611
 612static uint32_t fimd_get_alpha_aen(Exynos4210fimdWindow *w, uint32_t pix_a)
 613{
 614    return w->alpha_val[pix_a];
 615}
 616
 617static uint32_t fimd_get_alpha_aen_ext(Exynos4210fimdWindow *w, uint32_t pix_a)
 618{
 619    return EXTEND_UPPER_HALFBYTE(w->alpha_val[pix_a]);
 620}
 621
 622static uint32_t fimd_get_alpha_sel(Exynos4210fimdWindow *w, uint32_t pix_a)
 623{
 624    return w->alpha_val[(w->wincon & FIMD_WINCON_ALPHA_SEL) ? 1 : 0];
 625}
 626
 627static uint32_t fimd_get_alpha_sel_ext(Exynos4210fimdWindow *w, uint32_t pix_a)
 628{
 629    return EXTEND_UPPER_HALFBYTE(w->alpha_val[(w->wincon &
 630            FIMD_WINCON_ALPHA_SEL) ? 1 : 0]);
 631}
 632
 633/* Updates currently active alpha value get function for specified window */
 634static void fimd_update_get_alpha(Exynos4210fimdState *s, int win)
 635{
 636    Exynos4210fimdWindow *w = &s->window[win];
 637    const bool alpha_is_8bit = s->blendcon & FIMD_ALPHA_8BIT;
 638
 639    if (w->wincon & FIMD_WINCON_BLD_PIX) {
 640        if ((w->wincon & FIMD_WINCON_ALPHA_SEL) && WIN_BPP_MODE_WITH_ALPHA(w)) {
 641            /* In this case, alpha component contains meaningful value */
 642            if (w->wincon & FIMD_WINCON_ALPHA_MUL) {
 643                w->get_alpha = alpha_is_8bit ?
 644                        fimd_get_alpha_mult : fimd_get_alpha_mult_ext;
 645            } else {
 646                w->get_alpha = alpha_is_8bit ?
 647                        fimd_get_alpha_pix : fimd_get_alpha_pix_extlow;
 648            }
 649        } else {
 650            if (IS_PALETTIZED_MODE(w) &&
 651                  PAL_MODE_WITH_ALPHA(exynos4210_fimd_palette_format(s, win))) {
 652                /* Alpha component has 8-bit numeric value */
 653                w->get_alpha = alpha_is_8bit ?
 654                        fimd_get_alpha_pix : fimd_get_alpha_pix_exthigh;
 655            } else {
 656                /* Alpha has only two possible values (AEN) */
 657                w->get_alpha = alpha_is_8bit ?
 658                        fimd_get_alpha_aen : fimd_get_alpha_aen_ext;
 659            }
 660        }
 661    } else {
 662        w->get_alpha = alpha_is_8bit ? fimd_get_alpha_sel :
 663                fimd_get_alpha_sel_ext;
 664    }
 665}
 666
 667/* Blends current window's (w) pixel (foreground pixel *ret) with background
 668 * window (w_blend) pixel p_bg according to formula:
 669 * NEW_COLOR = a_coef x FG_PIXEL_COLOR + b_coef x BG_PIXEL_COLOR
 670 * NEW_ALPHA = p_coef x FG_ALPHA + q_coef x BG_ALPHA
 671 */
 672static void
 673exynos4210_fimd_blend_pixel(Exynos4210fimdWindow *w, rgba p_bg, rgba *ret)
 674{
 675    rgba p_fg = *ret;
 676    uint32_t bg_color = ((p_bg.r & 0xFF) << 16) | ((p_bg.g & 0xFF) << 8) |
 677            (p_bg.b & 0xFF);
 678    uint32_t fg_color = ((p_fg.r & 0xFF) << 16) | ((p_fg.g & 0xFF) << 8) |
 679            (p_fg.b & 0xFF);
 680    uint32_t alpha_fg = p_fg.a;
 681    int i;
 682    /* It is possible that blending equation parameters a and b do not
 683     * depend on window BLENEQ register. Account for this with first_coef */
 684    enum { A_COEF = 0, B_COEF = 1, P_COEF = 2, Q_COEF = 3, COEF_NUM = 4};
 685    uint32_t first_coef = A_COEF;
 686    uint32_t blend_param[COEF_NUM];
 687
 688    if (w->keycon[0] & FIMD_WKEYCON0_KEYEN) {
 689        uint32_t colorkey = (w->keycon[1] &
 690              ~(w->keycon[0] & FIMD_WKEYCON0_COMPKEY)) & FIMD_WKEYCON0_COMPKEY;
 691
 692        if ((w->keycon[0] & FIMD_WKEYCON0_DIRCON) &&
 693            (bg_color & ~(w->keycon[0] & FIMD_WKEYCON0_COMPKEY)) == colorkey) {
 694            /* Foreground pixel is displayed */
 695            if (w->keycon[0] & FIMD_WKEYCON0_KEYBLEN) {
 696                alpha_fg = w->keyalpha;
 697                blend_param[A_COEF] = alpha_fg;
 698                blend_param[B_COEF] = FIMD_1_MINUS_COLOR(alpha_fg);
 699            } else {
 700                alpha_fg = 0;
 701                blend_param[A_COEF] = 0xFFFFFF;
 702                blend_param[B_COEF] = 0x0;
 703            }
 704            first_coef = P_COEF;
 705        } else if ((w->keycon[0] & FIMD_WKEYCON0_DIRCON) == 0 &&
 706            (fg_color & ~(w->keycon[0] & FIMD_WKEYCON0_COMPKEY)) == colorkey) {
 707            /* Background pixel is displayed */
 708            if (w->keycon[0] & FIMD_WKEYCON0_KEYBLEN) {
 709                alpha_fg = w->keyalpha;
 710                blend_param[A_COEF] = alpha_fg;
 711                blend_param[B_COEF] = FIMD_1_MINUS_COLOR(alpha_fg);
 712            } else {
 713                alpha_fg = 0;
 714                blend_param[A_COEF] = 0x0;
 715                blend_param[B_COEF] = 0xFFFFFF;
 716            }
 717            first_coef = P_COEF;
 718        }
 719    }
 720
 721    for (i = first_coef; i < COEF_NUM; i++) {
 722        switch ((w->blendeq >> i * 6) & FIMD_BLENDEQ_COEF_MASK) {
 723        case 0:
 724            blend_param[i] = 0;
 725            break;
 726        case 1:
 727            blend_param[i] = 0xFFFFFF;
 728            break;
 729        case 2:
 730            blend_param[i] = alpha_fg;
 731            break;
 732        case 3:
 733            blend_param[i] = FIMD_1_MINUS_COLOR(alpha_fg);
 734            break;
 735        case 4:
 736            blend_param[i] = p_bg.a;
 737            break;
 738        case 5:
 739            blend_param[i] = FIMD_1_MINUS_COLOR(p_bg.a);
 740            break;
 741        case 6:
 742            blend_param[i] = w->alpha_val[0];
 743            break;
 744        case 10:
 745            blend_param[i] = fg_color;
 746            break;
 747        case 11:
 748            blend_param[i] = FIMD_1_MINUS_COLOR(fg_color);
 749            break;
 750        case 12:
 751            blend_param[i] = bg_color;
 752            break;
 753        case 13:
 754            blend_param[i] = FIMD_1_MINUS_COLOR(bg_color);
 755            break;
 756        default:
 757            hw_error("exynos4210.fimd: blend equation coef illegal value\n");
 758            break;
 759        }
 760    }
 761
 762    fg_color = fimd_mult_and_sum_each_byte(bg_color, blend_param[B_COEF],
 763            fg_color, blend_param[A_COEF]);
 764    ret->b = fg_color & 0xFF;
 765    fg_color >>= 8;
 766    ret->g = fg_color & 0xFF;
 767    fg_color >>= 8;
 768    ret->r = fg_color & 0xFF;
 769    ret->a = fimd_mult_and_sum_each_byte(alpha_fg, blend_param[P_COEF],
 770            p_bg.a, blend_param[Q_COEF]);
 771}
 772
 773/* These routines read data from video frame buffer in system RAM, convert
 774 * this data to display controller internal representation, if necessary,
 775 * perform pixel blending with data, currently presented in internal buffer.
 776 * Result is stored in display controller internal frame buffer. */
 777
 778/* Draw line with index in palette table in RAM frame buffer data */
 779#define DEF_DRAW_LINE_PALETTE(N) \
 780static void glue(draw_line_palette_, N)(Exynos4210fimdWindow *w, uint8_t *src, \
 781               uint8_t *dst, bool blend) \
 782{ \
 783    int width = w->rightbot_x - w->lefttop_x + 1; \
 784    uint8_t *ifb = dst; \
 785    uint8_t swap = (w->wincon & FIMD_WINCON_SWAP) >> FIMD_WINCON_SWAP_SHIFT; \
 786    uint64_t data; \
 787    rgba p, p_old; \
 788    int i; \
 789    do { \
 790        memcpy(&data, src, sizeof(data)); \
 791        src += 8; \
 792        fimd_swap_data(swap, &data); \
 793        for (i = (64 / (N) - 1); i >= 0; i--) { \
 794            w->pixel_to_rgb(w->palette[(data >> ((N) * i)) & \
 795                                   ((1ULL << (N)) - 1)], &p); \
 796            p.a = w->get_alpha(w, p.a); \
 797            if (blend) { \
 798                ifb +=  get_pixel_ifb(ifb, &p_old); \
 799                exynos4210_fimd_blend_pixel(w, p_old, &p); \
 800            } \
 801            dst += put_pixel_ifb(p, dst); \
 802        } \
 803        width -= (64 / (N)); \
 804    } while (width > 0); \
 805}
 806
 807/* Draw line with direct color value in RAM frame buffer data */
 808#define DEF_DRAW_LINE_NOPALETTE(N) \
 809static void glue(draw_line_, N)(Exynos4210fimdWindow *w, uint8_t *src, \
 810                    uint8_t *dst, bool blend) \
 811{ \
 812    int width = w->rightbot_x - w->lefttop_x + 1; \
 813    uint8_t *ifb = dst; \
 814    uint8_t swap = (w->wincon & FIMD_WINCON_SWAP) >> FIMD_WINCON_SWAP_SHIFT; \
 815    uint64_t data; \
 816    rgba p, p_old; \
 817    int i; \
 818    do { \
 819        memcpy(&data, src, sizeof(data)); \
 820        src += 8; \
 821        fimd_swap_data(swap, &data); \
 822        for (i = (64 / (N) - 1); i >= 0; i--) { \
 823            w->pixel_to_rgb((data >> ((N) * i)) & ((1ULL << (N)) - 1), &p); \
 824            p.a = w->get_alpha(w, p.a); \
 825            if (blend) { \
 826                ifb += get_pixel_ifb(ifb, &p_old); \
 827                exynos4210_fimd_blend_pixel(w, p_old, &p); \
 828            } \
 829            dst += put_pixel_ifb(p, dst); \
 830        } \
 831        width -= (64 / (N)); \
 832    } while (width > 0); \
 833}
 834
 835DEF_DRAW_LINE_PALETTE(1)
 836DEF_DRAW_LINE_PALETTE(2)
 837DEF_DRAW_LINE_PALETTE(4)
 838DEF_DRAW_LINE_PALETTE(8)
 839DEF_DRAW_LINE_NOPALETTE(8)  /* 8bpp mode has palette and non-palette versions */
 840DEF_DRAW_LINE_NOPALETTE(16)
 841DEF_DRAW_LINE_NOPALETTE(32)
 842
 843/* Special draw line routine for window color map case */
 844static void draw_line_mapcolor(Exynos4210fimdWindow *w, uint8_t *src,
 845                       uint8_t *dst, bool blend)
 846{
 847    rgba p, p_old;
 848    uint8_t *ifb = dst;
 849    int width = w->rightbot_x - w->lefttop_x + 1;
 850    uint32_t map_color = w->winmap & FIMD_WINMAP_COLOR_MASK;
 851
 852    do {
 853        pixel_888_to_rgb(map_color, &p);
 854        p.a = w->get_alpha(w, p.a);
 855        if (blend) {
 856            ifb += get_pixel_ifb(ifb, &p_old);
 857            exynos4210_fimd_blend_pixel(w, p_old, &p);
 858        }
 859        dst += put_pixel_ifb(p, dst);
 860    } while (--width);
 861}
 862
 863/* Write RGB to QEMU's GraphicConsole framebuffer */
 864
 865static int put_to_qemufb_pixel8(const rgba p, uint8_t *d)
 866{
 867    uint32_t pixel = rgb_to_pixel8(p.r, p.g, p.b);
 868    *(uint8_t *)d = pixel;
 869    return 1;
 870}
 871
 872static int put_to_qemufb_pixel15(const rgba p, uint8_t *d)
 873{
 874    uint32_t pixel = rgb_to_pixel15(p.r, p.g, p.b);
 875    *(uint16_t *)d = pixel;
 876    return 2;
 877}
 878
 879static int put_to_qemufb_pixel16(const rgba p, uint8_t *d)
 880{
 881    uint32_t pixel = rgb_to_pixel16(p.r, p.g, p.b);
 882    *(uint16_t *)d = pixel;
 883    return 2;
 884}
 885
 886static int put_to_qemufb_pixel24(const rgba p, uint8_t *d)
 887{
 888    uint32_t pixel = rgb_to_pixel24(p.r, p.g, p.b);
 889    *(uint8_t *)d++ = (pixel >>  0) & 0xFF;
 890    *(uint8_t *)d++ = (pixel >>  8) & 0xFF;
 891    *(uint8_t *)d++ = (pixel >> 16) & 0xFF;
 892    return 3;
 893}
 894
 895static int put_to_qemufb_pixel32(const rgba p, uint8_t *d)
 896{
 897    uint32_t pixel = rgb_to_pixel24(p.r, p.g, p.b);
 898    *(uint32_t *)d = pixel;
 899    return 4;
 900}
 901
 902/* Routine to copy pixel from internal buffer to QEMU buffer */
 903static int (*put_pixel_toqemu)(const rgba p, uint8_t *pixel);
 904static inline void fimd_update_putpix_qemu(int bpp)
 905{
 906    switch (bpp) {
 907    case 8:
 908        put_pixel_toqemu = put_to_qemufb_pixel8;
 909        break;
 910    case 15:
 911        put_pixel_toqemu = put_to_qemufb_pixel15;
 912        break;
 913    case 16:
 914        put_pixel_toqemu = put_to_qemufb_pixel16;
 915        break;
 916    case 24:
 917        put_pixel_toqemu = put_to_qemufb_pixel24;
 918        break;
 919    case 32:
 920        put_pixel_toqemu = put_to_qemufb_pixel32;
 921        break;
 922    default:
 923        hw_error("exynos4210.fimd: unsupported BPP (%d)", bpp);
 924        break;
 925    }
 926}
 927
 928/* Routine to copy a line from internal frame buffer to QEMU display */
 929static void fimd_copy_line_toqemu(int width, uint8_t *src, uint8_t *dst)
 930{
 931    rgba p;
 932
 933    do {
 934        src += get_pixel_ifb(src, &p);
 935        dst += put_pixel_toqemu(p, dst);
 936    } while (--width);
 937}
 938
 939/* Parse BPPMODE_F = WINCON1[5:2] bits */
 940static void exynos4210_fimd_update_win_bppmode(Exynos4210fimdState *s, int win)
 941{
 942    Exynos4210fimdWindow *w = &s->window[win];
 943
 944    if (w->winmap & FIMD_WINMAP_EN) {
 945        w->draw_line = draw_line_mapcolor;
 946        return;
 947    }
 948
 949    switch (WIN_BPP_MODE(w)) {
 950    case 0:
 951        w->draw_line = draw_line_palette_1;
 952        w->pixel_to_rgb =
 953                palette_data_format[exynos4210_fimd_palette_format(s, win)];
 954        break;
 955    case 1:
 956        w->draw_line = draw_line_palette_2;
 957        w->pixel_to_rgb =
 958                palette_data_format[exynos4210_fimd_palette_format(s, win)];
 959        break;
 960    case 2:
 961        w->draw_line = draw_line_palette_4;
 962        w->pixel_to_rgb =
 963                palette_data_format[exynos4210_fimd_palette_format(s, win)];
 964        break;
 965    case 3:
 966        w->draw_line = draw_line_palette_8;
 967        w->pixel_to_rgb =
 968                palette_data_format[exynos4210_fimd_palette_format(s, win)];
 969        break;
 970    case 4:
 971        w->draw_line = draw_line_8;
 972        w->pixel_to_rgb = pixel_a232_to_rgb;
 973        break;
 974    case 5:
 975        w->draw_line = draw_line_16;
 976        w->pixel_to_rgb = pixel_565_to_rgb;
 977        break;
 978    case 6:
 979        w->draw_line = draw_line_16;
 980        w->pixel_to_rgb = pixel_a555_to_rgb;
 981        break;
 982    case 7:
 983        w->draw_line = draw_line_16;
 984        w->pixel_to_rgb = pixel_1555_to_rgb;
 985        break;
 986    case 8:
 987        w->draw_line = draw_line_32;
 988        w->pixel_to_rgb = pixel_666_to_rgb;
 989        break;
 990    case 9:
 991        w->draw_line = draw_line_32;
 992        w->pixel_to_rgb = pixel_a665_to_rgb;
 993        break;
 994    case 10:
 995        w->draw_line = draw_line_32;
 996        w->pixel_to_rgb = pixel_a666_to_rgb;
 997        break;
 998    case 11:
 999        w->draw_line = draw_line_32;
1000        w->pixel_to_rgb = pixel_888_to_rgb;
1001        break;
1002    case 12:
1003        w->draw_line = draw_line_32;
1004        w->pixel_to_rgb = pixel_a887_to_rgb;
1005        break;
1006    case 13:
1007        w->draw_line = draw_line_32;
1008        if ((w->wincon & FIMD_WINCON_BLD_PIX) && (w->wincon &
1009                FIMD_WINCON_ALPHA_SEL)) {
1010            w->pixel_to_rgb = pixel_8888_to_rgb;
1011        } else {
1012            w->pixel_to_rgb = pixel_a888_to_rgb;
1013        }
1014        break;
1015    case 14:
1016        w->draw_line = draw_line_16;
1017        if ((w->wincon & FIMD_WINCON_BLD_PIX) && (w->wincon &
1018                FIMD_WINCON_ALPHA_SEL)) {
1019            w->pixel_to_rgb = pixel_4444_to_rgb;
1020        } else {
1021            w->pixel_to_rgb = pixel_a444_to_rgb;
1022        }
1023        break;
1024    case 15:
1025        w->draw_line = draw_line_16;
1026        w->pixel_to_rgb = pixel_555_to_rgb;
1027        break;
1028    }
1029}
1030
1031#if EXYNOS4210_FIMD_MODE_TRACE > 0
1032static const char *exynos4210_fimd_get_bppmode(int mode_code)
1033{
1034    switch (mode_code) {
1035    case 0:
1036        return "1 bpp";
1037    case 1:
1038        return "2 bpp";
1039    case 2:
1040        return "4 bpp";
1041    case 3:
1042        return "8 bpp (palettized)";
1043    case 4:
1044        return "8 bpp (non-palettized, A: 1-R:2-G:3-B:2)";
1045    case 5:
1046        return "16 bpp (non-palettized, R:5-G:6-B:5)";
1047    case 6:
1048        return "16 bpp (non-palettized, A:1-R:5-G:5-B:5)";
1049    case 7:
1050        return "16 bpp (non-palettized, I :1-R:5-G:5-B:5)";
1051    case 8:
1052        return "Unpacked 18 bpp (non-palettized, R:6-G:6-B:6)";
1053    case 9:
1054        return "Unpacked 18bpp (non-palettized,A:1-R:6-G:6-B:5)";
1055    case 10:
1056        return "Unpacked 19bpp (non-palettized,A:1-R:6-G:6-B:6)";
1057    case 11:
1058        return "Unpacked 24 bpp (non-palettized R:8-G:8-B:8)";
1059    case 12:
1060        return "Unpacked 24 bpp (non-palettized A:1-R:8-G:8-B:7)";
1061    case 13:
1062        return "Unpacked 25 bpp (non-palettized A:1-R:8-G:8-B:8)";
1063    case 14:
1064        return "Unpacked 13 bpp (non-palettized A:1-R:4-G:4-B:4)";
1065    case 15:
1066        return "Unpacked 15 bpp (non-palettized R:5-G:5-B:5)";
1067    default:
1068        return "Non-existing bpp mode";
1069    }
1070}
1071
1072static inline void exynos4210_fimd_trace_bppmode(Exynos4210fimdState *s,
1073                int win_num, uint32_t val)
1074{
1075    Exynos4210fimdWindow *w = &s->window[win_num];
1076
1077    if (w->winmap & FIMD_WINMAP_EN) {
1078        printf("QEMU FIMD: Window %d is mapped with MAPCOLOR=0x%x\n",
1079                win_num, w->winmap & 0xFFFFFF);
1080        return;
1081    }
1082
1083    if ((val != 0xFFFFFFFF) && ((w->wincon >> 2) & 0xF) == ((val >> 2) & 0xF)) {
1084        return;
1085    }
1086    printf("QEMU FIMD: Window %d BPP mode set to %s\n", win_num,
1087        exynos4210_fimd_get_bppmode((val >> 2) & 0xF));
1088}
1089#else
1090static inline void exynos4210_fimd_trace_bppmode(Exynos4210fimdState *s,
1091        int win_num, uint32_t val)
1092{
1093
1094}
1095#endif
1096
1097static inline int fimd_get_buffer_id(Exynos4210fimdWindow *w)
1098{
1099    switch (w->wincon & FIMD_WINCON_BUFSTATUS) {
1100    case FIMD_WINCON_BUF0_STAT:
1101        return 0;
1102    case FIMD_WINCON_BUF1_STAT:
1103        return 1;
1104    case FIMD_WINCON_BUF2_STAT:
1105        return 2;
1106    default:
1107        qemu_log_mask(LOG_GUEST_ERROR, "FIMD: Non-existent buffer index\n");
1108        return 0;
1109    }
1110}
1111
1112static void exynos4210_fimd_invalidate(void *opaque)
1113{
1114    Exynos4210fimdState *s = (Exynos4210fimdState *)opaque;
1115    s->invalidate = true;
1116}
1117
1118/* Updates specified window's MemorySection based on values of WINCON,
1119 * VIDOSDA, VIDOSDB, VIDWADDx and SHADOWCON registers */
1120static void fimd_update_memory_section(Exynos4210fimdState *s, unsigned win)
1121{
1122    SysBusDevice *sbd = SYS_BUS_DEVICE(s);
1123    Exynos4210fimdWindow *w = &s->window[win];
1124    hwaddr fb_start_addr, fb_mapped_len;
1125
1126    if (!s->enabled || !(w->wincon & FIMD_WINCON_ENWIN) ||
1127            FIMD_WINDOW_PROTECTED(s->shadowcon, win)) {
1128        return;
1129    }
1130
1131    if (w->host_fb_addr) {
1132        cpu_physical_memory_unmap(w->host_fb_addr, w->fb_len, 0, 0);
1133        w->host_fb_addr = NULL;
1134        w->fb_len = 0;
1135    }
1136
1137    fb_start_addr = w->buf_start[fimd_get_buffer_id(w)];
1138    /* Total number of bytes of virtual screen used by current window */
1139    w->fb_len = fb_mapped_len = (w->virtpage_width + w->virtpage_offsize) *
1140            (w->rightbot_y - w->lefttop_y + 1);
1141
1142    /* TODO: add .exit and unref the region there.  Not needed yet since sysbus
1143     * does not support hot-unplug.
1144     */
1145    if (w->mem_section.mr) {
1146        memory_region_set_log(w->mem_section.mr, false, DIRTY_MEMORY_VGA);
1147        memory_region_unref(w->mem_section.mr);
1148    }
1149
1150    w->mem_section = memory_region_find(sysbus_address_space(sbd),
1151                                        fb_start_addr, w->fb_len);
1152    assert(w->mem_section.mr);
1153    assert(w->mem_section.offset_within_address_space == fb_start_addr);
1154    DPRINT_TRACE("Window %u framebuffer changed: address=0x%08x, len=0x%x\n",
1155            win, fb_start_addr, w->fb_len);
1156
1157    if (int128_get64(w->mem_section.size) != w->fb_len ||
1158            !memory_region_is_ram(w->mem_section.mr)) {
1159        qemu_log_mask(LOG_GUEST_ERROR,
1160                      "FIMD: Failed to find window %u framebuffer region\n",
1161                      win);
1162        goto error_return;
1163    }
1164
1165    w->host_fb_addr = cpu_physical_memory_map(fb_start_addr, &fb_mapped_len,
1166                                              false);
1167    if (!w->host_fb_addr) {
1168        qemu_log_mask(LOG_GUEST_ERROR,
1169                      "FIMD: Failed to map window %u framebuffer\n", win);
1170        goto error_return;
1171    }
1172
1173    if (fb_mapped_len != w->fb_len) {
1174        qemu_log_mask(LOG_GUEST_ERROR,
1175                      "FIMD: Window %u mapped framebuffer length is less than "
1176                      "expected\n", win);
1177        cpu_physical_memory_unmap(w->host_fb_addr, fb_mapped_len, 0, 0);
1178        goto error_return;
1179    }
1180    memory_region_set_log(w->mem_section.mr, true, DIRTY_MEMORY_VGA);
1181    exynos4210_fimd_invalidate(s);
1182    return;
1183
1184error_return:
1185    memory_region_unref(w->mem_section.mr);
1186    w->mem_section.mr = NULL;
1187    w->mem_section.size = int128_zero();
1188    w->host_fb_addr = NULL;
1189    w->fb_len = 0;
1190}
1191
1192static void exynos4210_fimd_enable(Exynos4210fimdState *s, bool enabled)
1193{
1194    if (enabled && !s->enabled) {
1195        unsigned w;
1196        s->enabled = true;
1197        for (w = 0; w < NUM_OF_WINDOWS; w++) {
1198            fimd_update_memory_section(s, w);
1199        }
1200    }
1201    s->enabled = enabled;
1202    DPRINT_TRACE("display controller %s\n", enabled ? "enabled" : "disabled");
1203}
1204
1205static inline uint32_t unpack_upper_4(uint32_t x)
1206{
1207    return ((x & 0xF00) << 12) | ((x & 0xF0) << 8) | ((x & 0xF) << 4);
1208}
1209
1210static inline uint32_t pack_upper_4(uint32_t x)
1211{
1212    return (((x & 0xF00000) >> 12) | ((x & 0xF000) >> 8) |
1213            ((x & 0xF0) >> 4)) & 0xFFF;
1214}
1215
1216static void exynos4210_fimd_update_irq(Exynos4210fimdState *s)
1217{
1218    if (!(s->vidintcon[0] & FIMD_VIDINT_INTEN)) {
1219        qemu_irq_lower(s->irq[0]);
1220        qemu_irq_lower(s->irq[1]);
1221        qemu_irq_lower(s->irq[2]);
1222        return;
1223    }
1224    if ((s->vidintcon[0] & FIMD_VIDINT_INTFIFOEN) &&
1225            (s->vidintcon[1] & FIMD_VIDINT_INTFIFOPEND)) {
1226        qemu_irq_raise(s->irq[0]);
1227    } else {
1228        qemu_irq_lower(s->irq[0]);
1229    }
1230    if ((s->vidintcon[0] & FIMD_VIDINT_INTFRMEN) &&
1231            (s->vidintcon[1] & FIMD_VIDINT_INTFRMPEND)) {
1232        qemu_irq_raise(s->irq[1]);
1233    } else {
1234        qemu_irq_lower(s->irq[1]);
1235    }
1236    if ((s->vidintcon[0] & FIMD_VIDINT_I80IFDONE) &&
1237            (s->vidintcon[1] & FIMD_VIDINT_INTI80PEND)) {
1238        qemu_irq_raise(s->irq[2]);
1239    } else {
1240        qemu_irq_lower(s->irq[2]);
1241    }
1242}
1243
1244static void exynos4210_update_resolution(Exynos4210fimdState *s)
1245{
1246    DisplaySurface *surface = qemu_console_surface(s->console);
1247
1248    /* LCD resolution is stored in VIDEO TIME CONTROL REGISTER 2 */
1249    uint32_t width = ((s->vidtcon[2] >> FIMD_VIDTCON2_HOR_SHIFT) &
1250            FIMD_VIDTCON2_SIZE_MASK) + 1;
1251    uint32_t height = ((s->vidtcon[2] >> FIMD_VIDTCON2_VER_SHIFT) &
1252            FIMD_VIDTCON2_SIZE_MASK) + 1;
1253
1254    if (s->ifb == NULL || surface_width(surface) != width ||
1255            surface_height(surface) != height) {
1256        DPRINT_L1("Resolution changed from %ux%u to %ux%u\n",
1257           surface_width(surface), surface_height(surface), width, height);
1258        qemu_console_resize(s->console, width, height);
1259        s->ifb = g_realloc(s->ifb, width * height * RGBA_SIZE + 1);
1260        memset(s->ifb, 0, width * height * RGBA_SIZE + 1);
1261        exynos4210_fimd_invalidate(s);
1262    }
1263}
1264
1265static void exynos4210_fimd_update(void *opaque)
1266{
1267    Exynos4210fimdState *s = (Exynos4210fimdState *)opaque;
1268    DisplaySurface *surface;
1269    Exynos4210fimdWindow *w;
1270    DirtyBitmapSnapshot *snap;
1271    int i, line;
1272    hwaddr fb_line_addr, inc_size;
1273    int scrn_height;
1274    int first_line = -1, last_line = -1, scrn_width;
1275    bool blend = false;
1276    uint8_t *host_fb_addr;
1277    bool is_dirty = false;
1278    int global_width;
1279
1280    if (!s || !s->console || !s->enabled ||
1281        surface_bits_per_pixel(qemu_console_surface(s->console)) == 0) {
1282        return;
1283    }
1284
1285    global_width = (s->vidtcon[2] & FIMD_VIDTCON2_SIZE_MASK) + 1;
1286    exynos4210_update_resolution(s);
1287    surface = qemu_console_surface(s->console);
1288
1289    for (i = 0; i < NUM_OF_WINDOWS; i++) {
1290        w = &s->window[i];
1291        if ((w->wincon & FIMD_WINCON_ENWIN) && w->host_fb_addr) {
1292            scrn_height = w->rightbot_y - w->lefttop_y + 1;
1293            scrn_width = w->virtpage_width;
1294            /* Total width of virtual screen page in bytes */
1295            inc_size = scrn_width + w->virtpage_offsize;
1296            host_fb_addr = w->host_fb_addr;
1297            fb_line_addr = w->mem_section.offset_within_region;
1298            snap = memory_region_snapshot_and_clear_dirty(w->mem_section.mr,
1299                    fb_line_addr, inc_size * scrn_height, DIRTY_MEMORY_VGA);
1300
1301            for (line = 0; line < scrn_height; line++) {
1302                is_dirty = memory_region_snapshot_get_dirty(w->mem_section.mr,
1303                            snap, fb_line_addr, scrn_width);
1304
1305                if (s->invalidate || is_dirty) {
1306                    if (first_line == -1) {
1307                        first_line = line;
1308                    }
1309                    last_line = line;
1310                    w->draw_line(w, host_fb_addr, s->ifb +
1311                        w->lefttop_x * RGBA_SIZE + (w->lefttop_y + line) *
1312                        global_width * RGBA_SIZE, blend);
1313                }
1314                host_fb_addr += inc_size;
1315                fb_line_addr += inc_size;
1316            }
1317            g_free(snap);
1318            blend = true;
1319        }
1320    }
1321
1322    /* Copy resulting image to QEMU_CONSOLE. */
1323    if (first_line >= 0) {
1324        uint8_t *d;
1325        int bpp;
1326
1327        bpp = surface_bits_per_pixel(surface);
1328        fimd_update_putpix_qemu(bpp);
1329        bpp = (bpp + 1) >> 3;
1330        d = surface_data(surface);
1331        for (line = first_line; line <= last_line; line++) {
1332            fimd_copy_line_toqemu(global_width, s->ifb + global_width * line *
1333                    RGBA_SIZE, d + global_width * line * bpp);
1334        }
1335        dpy_gfx_update_full(s->console);
1336    }
1337    s->invalidate = false;
1338    s->vidintcon[1] |= FIMD_VIDINT_INTFRMPEND;
1339    if ((s->vidcon[0] & FIMD_VIDCON0_ENVID_F) == 0) {
1340        exynos4210_fimd_enable(s, false);
1341    }
1342    exynos4210_fimd_update_irq(s);
1343}
1344
1345static void exynos4210_fimd_reset(DeviceState *d)
1346{
1347    Exynos4210fimdState *s = EXYNOS4210_FIMD(d);
1348    unsigned w;
1349
1350    DPRINT_TRACE("Display controller reset\n");
1351    /* Set all display controller registers to 0 */
1352    memset(&s->vidcon, 0, (uint8_t *)&s->window - (uint8_t *)&s->vidcon);
1353    for (w = 0; w < NUM_OF_WINDOWS; w++) {
1354        memset(&s->window[w], 0, sizeof(Exynos4210fimdWindow));
1355        s->window[w].blendeq = 0xC2;
1356        exynos4210_fimd_update_win_bppmode(s, w);
1357        exynos4210_fimd_trace_bppmode(s, w, 0xFFFFFFFF);
1358        fimd_update_get_alpha(s, w);
1359    }
1360
1361    g_free(s->ifb);
1362    s->ifb = NULL;
1363
1364    exynos4210_fimd_invalidate(s);
1365    exynos4210_fimd_enable(s, false);
1366    /* Some registers have non-zero initial values */
1367    s->winchmap = 0x7D517D51;
1368    s->colorgaincon = 0x10040100;
1369    s->huecoef_cr[0] = s->huecoef_cr[3] = 0x01000100;
1370    s->huecoef_cb[0] = s->huecoef_cb[3] = 0x01000100;
1371    s->hueoffset = 0x01800080;
1372}
1373
1374static void exynos4210_fimd_write(void *opaque, hwaddr offset,
1375                              uint64_t val, unsigned size)
1376{
1377    Exynos4210fimdState *s = (Exynos4210fimdState *)opaque;
1378    unsigned w, i;
1379    uint32_t old_value;
1380
1381    DPRINT_L2("write offset 0x%08x, value=%llu(0x%08llx)\n", offset,
1382            (long long unsigned int)val, (long long unsigned int)val);
1383
1384    switch (offset) {
1385    case FIMD_VIDCON0:
1386        if ((val & FIMD_VIDCON0_ENVID_MASK) == FIMD_VIDCON0_ENVID_MASK) {
1387            exynos4210_fimd_enable(s, true);
1388        } else {
1389            if ((val & FIMD_VIDCON0_ENVID) == 0) {
1390                exynos4210_fimd_enable(s, false);
1391            }
1392        }
1393        s->vidcon[0] = val;
1394        break;
1395    case FIMD_VIDCON1:
1396        /* Leave read-only bits as is */
1397        val = (val & (~FIMD_VIDCON1_ROMASK)) |
1398                (s->vidcon[1] & FIMD_VIDCON1_ROMASK);
1399        s->vidcon[1] = val;
1400        break;
1401    case FIMD_VIDCON2 ... FIMD_VIDCON3:
1402        s->vidcon[(offset) >> 2] = val;
1403        break;
1404    case FIMD_VIDTCON_START ... FIMD_VIDTCON_END:
1405        s->vidtcon[(offset - FIMD_VIDTCON_START) >> 2] = val;
1406        break;
1407    case FIMD_WINCON_START ... FIMD_WINCON_END:
1408        w = (offset - FIMD_WINCON_START) >> 2;
1409        /* Window's current buffer ID */
1410        i = fimd_get_buffer_id(&s->window[w]);
1411        old_value = s->window[w].wincon;
1412        val = (val & ~FIMD_WINCON_ROMASK) |
1413                (s->window[w].wincon & FIMD_WINCON_ROMASK);
1414        if (w == 0) {
1415            /* Window 0 wincon ALPHA_MUL bit must always be 0 */
1416            val &= ~FIMD_WINCON_ALPHA_MUL;
1417        }
1418        exynos4210_fimd_trace_bppmode(s, w, val);
1419        switch (val & FIMD_WINCON_BUFSELECT) {
1420        case FIMD_WINCON_BUF0_SEL:
1421            val &= ~FIMD_WINCON_BUFSTATUS;
1422            break;
1423        case FIMD_WINCON_BUF1_SEL:
1424            val = (val & ~FIMD_WINCON_BUFSTAT_H) | FIMD_WINCON_BUFSTAT_L;
1425            break;
1426        case FIMD_WINCON_BUF2_SEL:
1427            if (val & FIMD_WINCON_BUFMODE) {
1428                val = (val & ~FIMD_WINCON_BUFSTAT_L) | FIMD_WINCON_BUFSTAT_H;
1429            }
1430            break;
1431        default:
1432            break;
1433        }
1434        s->window[w].wincon = val;
1435        exynos4210_fimd_update_win_bppmode(s, w);
1436        fimd_update_get_alpha(s, w);
1437        if ((i != fimd_get_buffer_id(&s->window[w])) ||
1438                (!(old_value & FIMD_WINCON_ENWIN) && (s->window[w].wincon &
1439                        FIMD_WINCON_ENWIN))) {
1440            fimd_update_memory_section(s, w);
1441        }
1442        break;
1443    case FIMD_SHADOWCON:
1444        old_value = s->shadowcon;
1445        s->shadowcon = val;
1446        for (w = 0; w < NUM_OF_WINDOWS; w++) {
1447            if (FIMD_WINDOW_PROTECTED(old_value, w) &&
1448                    !FIMD_WINDOW_PROTECTED(s->shadowcon, w)) {
1449                fimd_update_memory_section(s, w);
1450            }
1451        }
1452        break;
1453    case FIMD_WINCHMAP:
1454        s->winchmap = val;
1455        break;
1456    case FIMD_VIDOSD_START ... FIMD_VIDOSD_END:
1457        w = (offset - FIMD_VIDOSD_START) >> 4;
1458        i = ((offset - FIMD_VIDOSD_START) & 0xF) >> 2;
1459        switch (i) {
1460        case 0:
1461            old_value = s->window[w].lefttop_y;
1462            s->window[w].lefttop_x = (val >> FIMD_VIDOSD_HOR_SHIFT) &
1463                                      FIMD_VIDOSD_COORD_MASK;
1464            s->window[w].lefttop_y = (val >> FIMD_VIDOSD_VER_SHIFT) &
1465                                      FIMD_VIDOSD_COORD_MASK;
1466            if (s->window[w].lefttop_y != old_value) {
1467                fimd_update_memory_section(s, w);
1468            }
1469            break;
1470        case 1:
1471            old_value = s->window[w].rightbot_y;
1472            s->window[w].rightbot_x = (val >> FIMD_VIDOSD_HOR_SHIFT) &
1473                                       FIMD_VIDOSD_COORD_MASK;
1474            s->window[w].rightbot_y = (val >> FIMD_VIDOSD_VER_SHIFT) &
1475                                       FIMD_VIDOSD_COORD_MASK;
1476            if (s->window[w].rightbot_y != old_value) {
1477                fimd_update_memory_section(s, w);
1478            }
1479            break;
1480        case 2:
1481            if (w == 0) {
1482                s->window[w].osdsize = val;
1483            } else {
1484                s->window[w].alpha_val[0] =
1485                    unpack_upper_4((val & FIMD_VIDOSD_ALPHA_AEN0) >>
1486                    FIMD_VIDOSD_AEN0_SHIFT) |
1487                    (s->window[w].alpha_val[0] & FIMD_VIDALPHA_ALPHA_LOWER);
1488                s->window[w].alpha_val[1] =
1489                    unpack_upper_4(val & FIMD_VIDOSD_ALPHA_AEN1) |
1490                    (s->window[w].alpha_val[1] & FIMD_VIDALPHA_ALPHA_LOWER);
1491            }
1492            break;
1493        case 3:
1494            if (w != 1 && w != 2) {
1495                qemu_log_mask(LOG_GUEST_ERROR,
1496                              "FIMD: Bad write offset 0x%08"HWADDR_PRIx"\n",
1497                              offset);
1498                return;
1499            }
1500            s->window[w].osdsize = val;
1501            break;
1502        }
1503        break;
1504    case FIMD_VIDWADD0_START ... FIMD_VIDWADD0_END:
1505        w = (offset - FIMD_VIDWADD0_START) >> 3;
1506        i = ((offset - FIMD_VIDWADD0_START) >> 2) & 1;
1507        if (i == fimd_get_buffer_id(&s->window[w]) &&
1508                s->window[w].buf_start[i] != val) {
1509            s->window[w].buf_start[i] = val;
1510            fimd_update_memory_section(s, w);
1511            break;
1512        }
1513        s->window[w].buf_start[i] = val;
1514        break;
1515    case FIMD_VIDWADD1_START ... FIMD_VIDWADD1_END:
1516        w = (offset - FIMD_VIDWADD1_START) >> 3;
1517        i = ((offset - FIMD_VIDWADD1_START) >> 2) & 1;
1518        s->window[w].buf_end[i] = val;
1519        break;
1520    case FIMD_VIDWADD2_START ... FIMD_VIDWADD2_END:
1521        w = (offset - FIMD_VIDWADD2_START) >> 2;
1522        if (((val & FIMD_VIDWADD2_PAGEWIDTH) != s->window[w].virtpage_width) ||
1523            (((val >> FIMD_VIDWADD2_OFFSIZE_SHIFT) & FIMD_VIDWADD2_OFFSIZE) !=
1524                        s->window[w].virtpage_offsize)) {
1525            s->window[w].virtpage_width = val & FIMD_VIDWADD2_PAGEWIDTH;
1526            s->window[w].virtpage_offsize =
1527                (val >> FIMD_VIDWADD2_OFFSIZE_SHIFT) & FIMD_VIDWADD2_OFFSIZE;
1528            fimd_update_memory_section(s, w);
1529        }
1530        break;
1531    case FIMD_VIDINTCON0:
1532        s->vidintcon[0] = val;
1533        break;
1534    case FIMD_VIDINTCON1:
1535        s->vidintcon[1] &= ~(val & 7);
1536        exynos4210_fimd_update_irq(s);
1537        break;
1538    case FIMD_WKEYCON_START ... FIMD_WKEYCON_END:
1539        w = ((offset - FIMD_WKEYCON_START) >> 3) + 1;
1540        i = ((offset - FIMD_WKEYCON_START) >> 2) & 1;
1541        s->window[w].keycon[i] = val;
1542        break;
1543    case FIMD_WKEYALPHA_START ... FIMD_WKEYALPHA_END:
1544        w = ((offset - FIMD_WKEYALPHA_START) >> 2) + 1;
1545        s->window[w].keyalpha = val;
1546        break;
1547    case FIMD_DITHMODE:
1548        s->dithmode = val;
1549        break;
1550    case FIMD_WINMAP_START ... FIMD_WINMAP_END:
1551        w = (offset - FIMD_WINMAP_START) >> 2;
1552        old_value = s->window[w].winmap;
1553        s->window[w].winmap = val;
1554        if ((val & FIMD_WINMAP_EN) ^ (old_value & FIMD_WINMAP_EN)) {
1555            exynos4210_fimd_invalidate(s);
1556            exynos4210_fimd_update_win_bppmode(s, w);
1557            exynos4210_fimd_trace_bppmode(s, w, 0xFFFFFFFF);
1558            exynos4210_fimd_update(s);
1559        }
1560        break;
1561    case FIMD_WPALCON_HIGH ... FIMD_WPALCON_LOW:
1562        i = (offset - FIMD_WPALCON_HIGH) >> 2;
1563        s->wpalcon[i] = val;
1564        if (s->wpalcon[1] & FIMD_WPALCON_UPDATEEN) {
1565            for (w = 0; w < NUM_OF_WINDOWS; w++) {
1566                exynos4210_fimd_update_win_bppmode(s, w);
1567                fimd_update_get_alpha(s, w);
1568            }
1569        }
1570        break;
1571    case FIMD_TRIGCON:
1572        val = (val & ~FIMD_TRIGCON_ROMASK) | (s->trigcon & FIMD_TRIGCON_ROMASK);
1573        s->trigcon = val;
1574        break;
1575    case FIMD_I80IFCON_START ... FIMD_I80IFCON_END:
1576        s->i80ifcon[(offset - FIMD_I80IFCON_START) >> 2] = val;
1577        break;
1578    case FIMD_COLORGAINCON:
1579        s->colorgaincon = val;
1580        break;
1581    case FIMD_LDI_CMDCON0 ... FIMD_LDI_CMDCON1:
1582        s->ldi_cmdcon[(offset - FIMD_LDI_CMDCON0) >> 2] = val;
1583        break;
1584    case FIMD_SIFCCON0 ... FIMD_SIFCCON2:
1585        i = (offset - FIMD_SIFCCON0) >> 2;
1586        if (i != 2) {
1587            s->sifccon[i] = val;
1588        }
1589        break;
1590    case FIMD_HUECOEFCR_START ... FIMD_HUECOEFCR_END:
1591        i = (offset - FIMD_HUECOEFCR_START) >> 2;
1592        s->huecoef_cr[i] = val;
1593        break;
1594    case FIMD_HUECOEFCB_START ... FIMD_HUECOEFCB_END:
1595        i = (offset - FIMD_HUECOEFCB_START) >> 2;
1596        s->huecoef_cb[i] = val;
1597        break;
1598    case FIMD_HUEOFFSET:
1599        s->hueoffset = val;
1600        break;
1601    case FIMD_VIDWALPHA_START ... FIMD_VIDWALPHA_END:
1602        w = ((offset - FIMD_VIDWALPHA_START) >> 3);
1603        i = ((offset - FIMD_VIDWALPHA_START) >> 2) & 1;
1604        if (w == 0) {
1605            s->window[w].alpha_val[i] = val;
1606        } else {
1607            s->window[w].alpha_val[i] = (val & FIMD_VIDALPHA_ALPHA_LOWER) |
1608                (s->window[w].alpha_val[i] & FIMD_VIDALPHA_ALPHA_UPPER);
1609        }
1610        break;
1611    case FIMD_BLENDEQ_START ... FIMD_BLENDEQ_END:
1612        s->window[(offset - FIMD_BLENDEQ_START) >> 2].blendeq = val;
1613        break;
1614    case FIMD_BLENDCON:
1615        old_value = s->blendcon;
1616        s->blendcon = val;
1617        if ((s->blendcon & FIMD_ALPHA_8BIT) != (old_value & FIMD_ALPHA_8BIT)) {
1618            for (w = 0; w < NUM_OF_WINDOWS; w++) {
1619                fimd_update_get_alpha(s, w);
1620            }
1621        }
1622        break;
1623    case FIMD_WRTQOSCON_START ... FIMD_WRTQOSCON_END:
1624        s->window[(offset - FIMD_WRTQOSCON_START) >> 2].rtqoscon = val;
1625        break;
1626    case FIMD_I80IFCMD_START ... FIMD_I80IFCMD_END:
1627        s->i80ifcmd[(offset - FIMD_I80IFCMD_START) >> 2] = val;
1628        break;
1629    case FIMD_VIDW0ADD0_B2 ... FIMD_VIDW4ADD0_B2:
1630        if (offset & 0x0004) {
1631            qemu_log_mask(LOG_GUEST_ERROR,
1632                          "FIMD: bad write offset 0x%08"HWADDR_PRIx"\n",
1633                          offset);
1634            break;
1635        }
1636        w = (offset - FIMD_VIDW0ADD0_B2) >> 3;
1637        if (fimd_get_buffer_id(&s->window[w]) == 2 &&
1638                s->window[w].buf_start[2] != val) {
1639            s->window[w].buf_start[2] = val;
1640            fimd_update_memory_section(s, w);
1641            break;
1642        }
1643        s->window[w].buf_start[2] = val;
1644        break;
1645    case FIMD_SHD_ADD0_START ... FIMD_SHD_ADD0_END:
1646        if (offset & 0x0004) {
1647            qemu_log_mask(LOG_GUEST_ERROR,
1648                          "FIMD: bad write offset 0x%08"HWADDR_PRIx"\n",
1649                          offset);
1650            break;
1651        }
1652        s->window[(offset - FIMD_SHD_ADD0_START) >> 3].shadow_buf_start = val;
1653        break;
1654    case FIMD_SHD_ADD1_START ... FIMD_SHD_ADD1_END:
1655        if (offset & 0x0004) {
1656            qemu_log_mask(LOG_GUEST_ERROR,
1657                          "FIMD: bad write offset 0x%08"HWADDR_PRIx"\n",
1658                          offset);
1659            break;
1660        }
1661        s->window[(offset - FIMD_SHD_ADD1_START) >> 3].shadow_buf_end = val;
1662        break;
1663    case FIMD_SHD_ADD2_START ... FIMD_SHD_ADD2_END:
1664        s->window[(offset - FIMD_SHD_ADD2_START) >> 2].shadow_buf_size = val;
1665        break;
1666    case FIMD_PAL_MEM_START ... FIMD_PAL_MEM_END:
1667        w = (offset - FIMD_PAL_MEM_START) >> 10;
1668        i = ((offset - FIMD_PAL_MEM_START) >> 2) & 0xFF;
1669        s->window[w].palette[i] = val;
1670        break;
1671    case FIMD_PALMEM_AL_START ... FIMD_PALMEM_AL_END:
1672        /* Palette memory aliases for windows 0 and 1 */
1673        w = (offset - FIMD_PALMEM_AL_START) >> 10;
1674        i = ((offset - FIMD_PALMEM_AL_START) >> 2) & 0xFF;
1675        s->window[w].palette[i] = val;
1676        break;
1677    default:
1678        qemu_log_mask(LOG_GUEST_ERROR,
1679                      "FIMD: bad write offset 0x%08"HWADDR_PRIx"\n", offset);
1680        break;
1681    }
1682}
1683
1684static uint64_t exynos4210_fimd_read(void *opaque, hwaddr offset,
1685                                  unsigned size)
1686{
1687    Exynos4210fimdState *s = (Exynos4210fimdState *)opaque;
1688    int w, i;
1689    uint32_t ret = 0;
1690
1691    DPRINT_L2("read offset 0x%08x\n", offset);
1692
1693    switch (offset) {
1694    case FIMD_VIDCON0 ... FIMD_VIDCON3:
1695        return s->vidcon[(offset - FIMD_VIDCON0) >> 2];
1696    case FIMD_VIDTCON_START ... FIMD_VIDTCON_END:
1697        return s->vidtcon[(offset - FIMD_VIDTCON_START) >> 2];
1698    case FIMD_WINCON_START ... FIMD_WINCON_END:
1699        return s->window[(offset - FIMD_WINCON_START) >> 2].wincon;
1700    case FIMD_SHADOWCON:
1701        return s->shadowcon;
1702    case FIMD_WINCHMAP:
1703        return s->winchmap;
1704    case FIMD_VIDOSD_START ... FIMD_VIDOSD_END:
1705        w = (offset - FIMD_VIDOSD_START) >> 4;
1706        i = ((offset - FIMD_VIDOSD_START) & 0xF) >> 2;
1707        switch (i) {
1708        case 0:
1709            ret = ((s->window[w].lefttop_x & FIMD_VIDOSD_COORD_MASK) <<
1710            FIMD_VIDOSD_HOR_SHIFT) |
1711            (s->window[w].lefttop_y & FIMD_VIDOSD_COORD_MASK);
1712            break;
1713        case 1:
1714            ret = ((s->window[w].rightbot_x & FIMD_VIDOSD_COORD_MASK) <<
1715                FIMD_VIDOSD_HOR_SHIFT) |
1716                (s->window[w].rightbot_y & FIMD_VIDOSD_COORD_MASK);
1717            break;
1718        case 2:
1719            if (w == 0) {
1720                ret = s->window[w].osdsize;
1721            } else {
1722                ret = (pack_upper_4(s->window[w].alpha_val[0]) <<
1723                    FIMD_VIDOSD_AEN0_SHIFT) |
1724                    pack_upper_4(s->window[w].alpha_val[1]);
1725            }
1726            break;
1727        case 3:
1728            if (w != 1 && w != 2) {
1729                qemu_log_mask(LOG_GUEST_ERROR,
1730                              "FIMD: bad read offset 0x%08"HWADDR_PRIx"\n",
1731                              offset);
1732                return 0xBAADBAAD;
1733            }
1734            ret = s->window[w].osdsize;
1735            break;
1736        }
1737        return ret;
1738    case FIMD_VIDWADD0_START ... FIMD_VIDWADD0_END:
1739        w = (offset - FIMD_VIDWADD0_START) >> 3;
1740        i = ((offset - FIMD_VIDWADD0_START) >> 2) & 1;
1741        return s->window[w].buf_start[i];
1742    case FIMD_VIDWADD1_START ... FIMD_VIDWADD1_END:
1743        w = (offset - FIMD_VIDWADD1_START) >> 3;
1744        i = ((offset - FIMD_VIDWADD1_START) >> 2) & 1;
1745        return s->window[w].buf_end[i];
1746    case FIMD_VIDWADD2_START ... FIMD_VIDWADD2_END:
1747        w = (offset - FIMD_VIDWADD2_START) >> 2;
1748        return s->window[w].virtpage_width | (s->window[w].virtpage_offsize <<
1749            FIMD_VIDWADD2_OFFSIZE_SHIFT);
1750    case FIMD_VIDINTCON0 ... FIMD_VIDINTCON1:
1751        return s->vidintcon[(offset - FIMD_VIDINTCON0) >> 2];
1752    case FIMD_WKEYCON_START ... FIMD_WKEYCON_END:
1753        w = ((offset - FIMD_WKEYCON_START) >> 3) + 1;
1754        i = ((offset - FIMD_WKEYCON_START) >> 2) & 1;
1755        return s->window[w].keycon[i];
1756    case FIMD_WKEYALPHA_START ... FIMD_WKEYALPHA_END:
1757        w = ((offset - FIMD_WKEYALPHA_START) >> 2) + 1;
1758        return s->window[w].keyalpha;
1759    case FIMD_DITHMODE:
1760        return s->dithmode;
1761    case FIMD_WINMAP_START ... FIMD_WINMAP_END:
1762        return s->window[(offset - FIMD_WINMAP_START) >> 2].winmap;
1763    case FIMD_WPALCON_HIGH ... FIMD_WPALCON_LOW:
1764        return s->wpalcon[(offset - FIMD_WPALCON_HIGH) >> 2];
1765    case FIMD_TRIGCON:
1766        return s->trigcon;
1767    case FIMD_I80IFCON_START ... FIMD_I80IFCON_END:
1768        return s->i80ifcon[(offset - FIMD_I80IFCON_START) >> 2];
1769    case FIMD_COLORGAINCON:
1770        return s->colorgaincon;
1771    case FIMD_LDI_CMDCON0 ... FIMD_LDI_CMDCON1:
1772        return s->ldi_cmdcon[(offset - FIMD_LDI_CMDCON0) >> 2];
1773    case FIMD_SIFCCON0 ... FIMD_SIFCCON2:
1774        i = (offset - FIMD_SIFCCON0) >> 2;
1775        return s->sifccon[i];
1776    case FIMD_HUECOEFCR_START ... FIMD_HUECOEFCR_END:
1777        i = (offset - FIMD_HUECOEFCR_START) >> 2;
1778        return s->huecoef_cr[i];
1779    case FIMD_HUECOEFCB_START ... FIMD_HUECOEFCB_END:
1780        i = (offset - FIMD_HUECOEFCB_START) >> 2;
1781        return s->huecoef_cb[i];
1782    case FIMD_HUEOFFSET:
1783        return s->hueoffset;
1784    case FIMD_VIDWALPHA_START ... FIMD_VIDWALPHA_END:
1785        w = ((offset - FIMD_VIDWALPHA_START) >> 3);
1786        i = ((offset - FIMD_VIDWALPHA_START) >> 2) & 1;
1787        return s->window[w].alpha_val[i] &
1788                (w == 0 ? 0xFFFFFF : FIMD_VIDALPHA_ALPHA_LOWER);
1789    case FIMD_BLENDEQ_START ... FIMD_BLENDEQ_END:
1790        return s->window[(offset - FIMD_BLENDEQ_START) >> 2].blendeq;
1791    case FIMD_BLENDCON:
1792        return s->blendcon;
1793    case FIMD_WRTQOSCON_START ... FIMD_WRTQOSCON_END:
1794        return s->window[(offset - FIMD_WRTQOSCON_START) >> 2].rtqoscon;
1795    case FIMD_I80IFCMD_START ... FIMD_I80IFCMD_END:
1796        return s->i80ifcmd[(offset - FIMD_I80IFCMD_START) >> 2];
1797    case FIMD_VIDW0ADD0_B2 ... FIMD_VIDW4ADD0_B2:
1798        if (offset & 0x0004) {
1799            break;
1800        }
1801        return s->window[(offset - FIMD_VIDW0ADD0_B2) >> 3].buf_start[2];
1802    case FIMD_SHD_ADD0_START ... FIMD_SHD_ADD0_END:
1803        if (offset & 0x0004) {
1804            break;
1805        }
1806        return s->window[(offset - FIMD_SHD_ADD0_START) >> 3].shadow_buf_start;
1807    case FIMD_SHD_ADD1_START ... FIMD_SHD_ADD1_END:
1808        if (offset & 0x0004) {
1809            break;
1810        }
1811        return s->window[(offset - FIMD_SHD_ADD1_START) >> 3].shadow_buf_end;
1812    case FIMD_SHD_ADD2_START ... FIMD_SHD_ADD2_END:
1813        return s->window[(offset - FIMD_SHD_ADD2_START) >> 2].shadow_buf_size;
1814    case FIMD_PAL_MEM_START ... FIMD_PAL_MEM_END:
1815        w = (offset - FIMD_PAL_MEM_START) >> 10;
1816        i = ((offset - FIMD_PAL_MEM_START) >> 2) & 0xFF;
1817        return s->window[w].palette[i];
1818    case FIMD_PALMEM_AL_START ... FIMD_PALMEM_AL_END:
1819        /* Palette aliases for win 0,1 */
1820        w = (offset - FIMD_PALMEM_AL_START) >> 10;
1821        i = ((offset - FIMD_PALMEM_AL_START) >> 2) & 0xFF;
1822        return s->window[w].palette[i];
1823    }
1824
1825    qemu_log_mask(LOG_GUEST_ERROR,
1826                  "FIMD: bad read offset 0x%08"HWADDR_PRIx"\n", offset);
1827    return 0xBAADBAAD;
1828}
1829
1830static const MemoryRegionOps exynos4210_fimd_mmio_ops = {
1831    .read = exynos4210_fimd_read,
1832    .write = exynos4210_fimd_write,
1833    .valid = {
1834        .min_access_size = 4,
1835        .max_access_size = 4,
1836        .unaligned = false
1837    },
1838    .endianness = DEVICE_NATIVE_ENDIAN,
1839};
1840
1841static int exynos4210_fimd_load(void *opaque, int version_id)
1842{
1843    Exynos4210fimdState *s = (Exynos4210fimdState *)opaque;
1844    int w;
1845
1846    if (version_id != 1) {
1847        return -EINVAL;
1848    }
1849
1850    for (w = 0; w < NUM_OF_WINDOWS; w++) {
1851        exynos4210_fimd_update_win_bppmode(s, w);
1852        fimd_update_get_alpha(s, w);
1853        fimd_update_memory_section(s, w);
1854    }
1855
1856    /* Redraw the whole screen */
1857    exynos4210_update_resolution(s);
1858    exynos4210_fimd_invalidate(s);
1859    exynos4210_fimd_enable(s, (s->vidcon[0] & FIMD_VIDCON0_ENVID_MASK) ==
1860            FIMD_VIDCON0_ENVID_MASK);
1861    return 0;
1862}
1863
1864static const VMStateDescription exynos4210_fimd_window_vmstate = {
1865    .name = "exynos4210.fimd_window",
1866    .version_id = 1,
1867    .minimum_version_id = 1,
1868    .fields = (VMStateField[]) {
1869        VMSTATE_UINT32(wincon, Exynos4210fimdWindow),
1870        VMSTATE_UINT32_ARRAY(buf_start, Exynos4210fimdWindow, 3),
1871        VMSTATE_UINT32_ARRAY(buf_end, Exynos4210fimdWindow, 3),
1872        VMSTATE_UINT32_ARRAY(keycon, Exynos4210fimdWindow, 2),
1873        VMSTATE_UINT32(keyalpha, Exynos4210fimdWindow),
1874        VMSTATE_UINT32(winmap, Exynos4210fimdWindow),
1875        VMSTATE_UINT32(blendeq, Exynos4210fimdWindow),
1876        VMSTATE_UINT32(rtqoscon, Exynos4210fimdWindow),
1877        VMSTATE_UINT32_ARRAY(palette, Exynos4210fimdWindow, 256),
1878        VMSTATE_UINT32(shadow_buf_start, Exynos4210fimdWindow),
1879        VMSTATE_UINT32(shadow_buf_end, Exynos4210fimdWindow),
1880        VMSTATE_UINT32(shadow_buf_size, Exynos4210fimdWindow),
1881        VMSTATE_UINT16(lefttop_x, Exynos4210fimdWindow),
1882        VMSTATE_UINT16(lefttop_y, Exynos4210fimdWindow),
1883        VMSTATE_UINT16(rightbot_x, Exynos4210fimdWindow),
1884        VMSTATE_UINT16(rightbot_y, Exynos4210fimdWindow),
1885        VMSTATE_UINT32(osdsize, Exynos4210fimdWindow),
1886        VMSTATE_UINT32_ARRAY(alpha_val, Exynos4210fimdWindow, 2),
1887        VMSTATE_UINT16(virtpage_width, Exynos4210fimdWindow),
1888        VMSTATE_UINT16(virtpage_offsize, Exynos4210fimdWindow),
1889        VMSTATE_END_OF_LIST()
1890    }
1891};
1892
1893static const VMStateDescription exynos4210_fimd_vmstate = {
1894    .name = "exynos4210.fimd",
1895    .version_id = 1,
1896    .minimum_version_id = 1,
1897    .post_load = exynos4210_fimd_load,
1898    .fields = (VMStateField[]) {
1899        VMSTATE_UINT32_ARRAY(vidcon, Exynos4210fimdState, 4),
1900        VMSTATE_UINT32_ARRAY(vidtcon, Exynos4210fimdState, 4),
1901        VMSTATE_UINT32(shadowcon, Exynos4210fimdState),
1902        VMSTATE_UINT32(winchmap, Exynos4210fimdState),
1903        VMSTATE_UINT32_ARRAY(vidintcon, Exynos4210fimdState, 2),
1904        VMSTATE_UINT32(dithmode, Exynos4210fimdState),
1905        VMSTATE_UINT32_ARRAY(wpalcon, Exynos4210fimdState, 2),
1906        VMSTATE_UINT32(trigcon, Exynos4210fimdState),
1907        VMSTATE_UINT32_ARRAY(i80ifcon, Exynos4210fimdState, 4),
1908        VMSTATE_UINT32(colorgaincon, Exynos4210fimdState),
1909        VMSTATE_UINT32_ARRAY(ldi_cmdcon, Exynos4210fimdState, 2),
1910        VMSTATE_UINT32_ARRAY(sifccon, Exynos4210fimdState, 3),
1911        VMSTATE_UINT32_ARRAY(huecoef_cr, Exynos4210fimdState, 4),
1912        VMSTATE_UINT32_ARRAY(huecoef_cb, Exynos4210fimdState, 4),
1913        VMSTATE_UINT32(hueoffset, Exynos4210fimdState),
1914        VMSTATE_UINT32_ARRAY(i80ifcmd, Exynos4210fimdState, 12),
1915        VMSTATE_UINT32(blendcon, Exynos4210fimdState),
1916        VMSTATE_STRUCT_ARRAY(window, Exynos4210fimdState, 5, 1,
1917                exynos4210_fimd_window_vmstate, Exynos4210fimdWindow),
1918        VMSTATE_END_OF_LIST()
1919    }
1920};
1921
1922static const GraphicHwOps exynos4210_fimd_ops = {
1923    .invalidate  = exynos4210_fimd_invalidate,
1924    .gfx_update  = exynos4210_fimd_update,
1925};
1926
1927static void exynos4210_fimd_init(Object *obj)
1928{
1929    Exynos4210fimdState *s = EXYNOS4210_FIMD(obj);
1930    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
1931
1932    s->ifb = NULL;
1933
1934    sysbus_init_irq(dev, &s->irq[0]);
1935    sysbus_init_irq(dev, &s->irq[1]);
1936    sysbus_init_irq(dev, &s->irq[2]);
1937
1938    memory_region_init_io(&s->iomem, obj, &exynos4210_fimd_mmio_ops, s,
1939            "exynos4210.fimd", FIMD_REGS_SIZE);
1940    sysbus_init_mmio(dev, &s->iomem);
1941}
1942
1943static void exynos4210_fimd_realize(DeviceState *dev, Error **errp)
1944{
1945    Exynos4210fimdState *s = EXYNOS4210_FIMD(dev);
1946
1947    s->console = graphic_console_init(dev, 0, &exynos4210_fimd_ops, s);
1948}
1949
1950static void exynos4210_fimd_class_init(ObjectClass *klass, void *data)
1951{
1952    DeviceClass *dc = DEVICE_CLASS(klass);
1953
1954    dc->vmsd = &exynos4210_fimd_vmstate;
1955    dc->reset = exynos4210_fimd_reset;
1956    dc->realize = exynos4210_fimd_realize;
1957}
1958
1959static const TypeInfo exynos4210_fimd_info = {
1960    .name = TYPE_EXYNOS4210_FIMD,
1961    .parent = TYPE_SYS_BUS_DEVICE,
1962    .instance_size = sizeof(Exynos4210fimdState),
1963    .instance_init = exynos4210_fimd_init,
1964    .class_init = exynos4210_fimd_class_init,
1965};
1966
1967static void exynos4210_fimd_register_types(void)
1968{
1969    type_register_static(&exynos4210_fimd_info);
1970}
1971
1972type_init(exynos4210_fimd_register_types)
1973