drivers/media/platform/davinci/vpbe_venc.c

   1 /*
   2  * Copyright (C) 2010 Texas Instruments Inc
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation version 2.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/ctype.h>
  17 #include <linux/delay.h>
  18 #include <linux/device.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/videodev2.h>
  22 #include <linux/slab.h>
  23
  24 #include <mach/hardware.h>
  25 #include <mach/mux.h>
  26 #include <linux/platform_data/i2c-davinci.h>
  27
  28 #include <linux/io.h>
  29
  30 #include <media/davinci/vpbe_types.h>
  31 #include <media/davinci/vpbe_venc.h>
  32 #include <media/davinci/vpss.h>
  33 #include <media/v4l2-device.h>
  34
  35 #include "vpbe_venc_regs.h"
  36
  37 #define MODULE_NAME     "davinci-vpbe-venc"
  38
  39 static struct platform_device_id vpbe_venc_devtype[] = {
  40         {
  41                 .name = DM644X_VPBE_VENC_SUBDEV_NAME,
  42                 .driver_data = VPBE_VERSION_1,
  43         }, {
  44                 .name = DM365_VPBE_VENC_SUBDEV_NAME,
  45                 .driver_data = VPBE_VERSION_2,
  46         }, {
  47                 .name = DM355_VPBE_VENC_SUBDEV_NAME,
  48                 .driver_data = VPBE_VERSION_3,
  49         },
  50         {
  51                 /* sentinel */
  52         }
  53 };
  54
  55 MODULE_DEVICE_TABLE(platform, vpbe_venc_devtype);
  56
  57 static int debug = 2;
  58 module_param(debug, int, 0644);
  59 MODULE_PARM_DESC(debug, "Debug level 0-2");
  60
  61 struct venc_state {
  62         struct v4l2_subdev sd;
  63         struct venc_callback *callback;
  64         struct venc_platform_data *pdata;
  65         struct device *pdev;
  66         u32 output;
  67         v4l2_std_id std;
  68         spinlock_t lock;
  69         void __iomem *venc_base;
  70         void __iomem *vdaccfg_reg;
  71         enum vpbe_version venc_type;
  72 };
  73
  74 static inline struct venc_state *to_state(struct v4l2_subdev *sd)
  75 {
  76         return container_of(sd, struct venc_state, sd);
  77 }
  78
  79 static inline u32 venc_read(struct v4l2_subdev *sd, u32 offset)
  80 {
  81         struct venc_state *venc = to_state(sd);
  82
  83         return readl(venc->venc_base + offset);
  84 }
  85
  86 static inline u32 venc_write(struct v4l2_subdev *sd, u32 offset, u32 val)
  87 {
  88         struct venc_state *venc = to_state(sd);
  89
  90         writel(val, (venc->venc_base + offset));
  91
  92         return val;
  93 }
  94
  95 static inline u32 venc_modify(struct v4l2_subdev *sd, u32 offset,
  96                                  u32 val, u32 mask)
  97 {
  98         u32 new_val = (venc_read(sd, offset) & ~mask) | (val & mask);
  99
 100         venc_write(sd, offset, new_val);
 101
 102         return new_val;
 103 }
 104
 105 static inline u32 vdaccfg_write(struct v4l2_subdev *sd, u32 val)
 106 {
 107         struct venc_state *venc = to_state(sd);
 108
 109         writel(val, venc->vdaccfg_reg);
 110
 111         val = readl(venc->vdaccfg_reg);
 112
 113         return val;
 114 }
 115
 116 #define VDAC_COMPONENT  0x543
 117 #define VDAC_S_VIDEO    0x210
 118 /* This function sets the dac of the VPBE for various outputs
 119  */
 120 static int venc_set_dac(struct v4l2_subdev *sd, u32 out_index)
 121 {
 122         switch (out_index) {
 123         case 0:
 124                 v4l2_dbg(debug, 1, sd, "Setting output to Composite\n");
 125                 venc_write(sd, VENC_DACSEL, 0);
 126                 break;
 127         case 1:
 128                 v4l2_dbg(debug, 1, sd, "Setting output to Component\n");
 129                 venc_write(sd, VENC_DACSEL, VDAC_COMPONENT);
 130                 break;
 131         case 2:
 132                 v4l2_dbg(debug, 1, sd, "Setting output to S-video\n");
 133                 venc_write(sd, VENC_DACSEL, VDAC_S_VIDEO);
 134                 break;
 135         default:
 136                 return -EINVAL;
 137         }
 138
 139         return 0;
 140 }
 141
 142 static void venc_enabledigitaloutput(struct v4l2_subdev *sd, int benable)
 143 {
 144         struct venc_state *venc = to_state(sd);
 145
 146         v4l2_dbg(debug, 2, sd, "venc_enabledigitaloutput\n");
 147
 148         if (benable) {
 149                 venc_write(sd, VENC_VMOD, 0);
 150                 venc_write(sd, VENC_CVBS, 0);
 151                 venc_write(sd, VENC_LCDOUT, 0);
 152                 venc_write(sd, VENC_HSPLS, 0);
 153                 venc_write(sd, VENC_HSTART, 0);
 154                 venc_write(sd, VENC_HVALID, 0);
 155                 venc_write(sd, VENC_HINT, 0);
 156                 venc_write(sd, VENC_VSPLS, 0);
 157                 venc_write(sd, VENC_VSTART, 0);
 158                 venc_write(sd, VENC_VVALID, 0);
 159                 venc_write(sd, VENC_VINT, 0);
 160                 venc_write(sd, VENC_YCCCTL, 0);
 161                 venc_write(sd, VENC_DACSEL, 0);
 162
 163         } else {
 164                 venc_write(sd, VENC_VMOD, 0);
 165                 /* disable VCLK output pin enable */
 166                 venc_write(sd, VENC_VIDCTL, 0x141);
 167
 168                 /* Disable output sync pins */
 169                 venc_write(sd, VENC_SYNCCTL, 0);
 170
 171                 /* Disable DCLOCK */
 172                 venc_write(sd, VENC_DCLKCTL, 0);
 173                 venc_write(sd, VENC_DRGBX1, 0x0000057C);
 174
 175                 /* Disable LCD output control (accepting default polarity) */
 176                 venc_write(sd, VENC_LCDOUT, 0);
 177                 if (venc->venc_type != VPBE_VERSION_3)
 178                         venc_write(sd, VENC_CMPNT, 0x100);
 179                 venc_write(sd, VENC_HSPLS, 0);
 180                 venc_write(sd, VENC_HINT, 0);
 181                 venc_write(sd, VENC_HSTART, 0);
 182                 venc_write(sd, VENC_HVALID, 0);
 183
 184                 venc_write(sd, VENC_VSPLS, 0);
 185                 venc_write(sd, VENC_VINT, 0);
 186                 venc_write(sd, VENC_VSTART, 0);
 187                 venc_write(sd, VENC_VVALID, 0);
 188
 189                 venc_write(sd, VENC_HSDLY, 0);
 190                 venc_write(sd, VENC_VSDLY, 0);
 191
 192                 venc_write(sd, VENC_YCCCTL, 0);
 193                 venc_write(sd, VENC_VSTARTA, 0);
 194
 195                 /* Set OSD clock and OSD Sync Adavance registers */
 196                 venc_write(sd, VENC_OSDCLK0, 1);
 197                 venc_write(sd, VENC_OSDCLK1, 2);
 198         }
 199 }
 200
 201 static void
 202 venc_enable_vpss_clock(int venc_type,
 203                        enum vpbe_enc_timings_type type,
 204                        unsigned int pclock)
 205 {
 206         if (venc_type == VPBE_VERSION_1)
 207                 return;
 208
 209         if (venc_type == VPBE_VERSION_2 && (type == VPBE_ENC_STD || (type ==
 210             VPBE_ENC_DV_TIMINGS && pclock <= 27000000))) {
 211                 vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
 212                 vpss_enable_clock(VPSS_VPBE_CLOCK, 1);
 213                 return;
 214         }
 215
 216         if (venc_type == VPBE_VERSION_3 && type == VPBE_ENC_STD)
 217                 vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 0);
 218 }
 219
 220 #define VDAC_CONFIG_SD_V3       0x0E21A6B6
 221 #define VDAC_CONFIG_SD_V2       0x081141CF
 222 /*
 223  * setting NTSC mode
 224  */
 225 static int venc_set_ntsc(struct v4l2_subdev *sd)
 226 {
 227         u32 val;
 228         struct venc_state *venc = to_state(sd);
 229         struct venc_platform_data *pdata = venc->pdata;
 230
 231         v4l2_dbg(debug, 2, sd, "venc_set_ntsc\n");
 232
 233         /* Setup clock at VPSS & VENC for SD */
 234         vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
 235         if (pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_525_60) < 0)
 236                 return -EINVAL;
 237
 238         venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_525_60);
 239         venc_enabledigitaloutput(sd, 0);
 240
 241         if (venc->venc_type == VPBE_VERSION_3) {
 242                 venc_write(sd, VENC_CLKCTL, 0x01);
 243                 venc_write(sd, VENC_VIDCTL, 0);
 244                 val = vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
 245         } else if (venc->venc_type == VPBE_VERSION_2) {
 246                 venc_write(sd, VENC_CLKCTL, 0x01);
 247                 venc_write(sd, VENC_VIDCTL, 0);
 248                 vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
 249         } else {
 250                 /* to set VENC CLK DIV to 1 - final clock is 54 MHz */
 251                 venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
 252                 /* Set REC656 Mode */
 253                 venc_write(sd, VENC_YCCCTL, 0x1);
 254                 venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAFRQ);
 255                 venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAUPS);
 256         }
 257
 258         venc_write(sd, VENC_VMOD, 0);
 259         venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
 260                         VENC_VMOD_VIE);
 261         venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
 262         venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_TVTYP_SHIFT),
 263                         VENC_VMOD_TVTYP);
 264         venc_write(sd, VENC_DACTST, 0x0);
 265         venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
 266
 267         return 0;
 268 }
 269
 270 /*
 271  * setting PAL mode
 272  */
 273 static int venc_set_pal(struct v4l2_subdev *sd)
 274 {
 275         struct venc_state *venc = to_state(sd);
 276
 277         v4l2_dbg(debug, 2, sd, "venc_set_pal\n");
 278
 279         /* Setup clock at VPSS & VENC for SD */
 280         vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
 281         if (venc->pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_625_50) < 0)
 282                 return -EINVAL;
 283
 284         venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_625_50);
 285         venc_enabledigitaloutput(sd, 0);
 286
 287         if (venc->venc_type == VPBE_VERSION_3) {
 288                 venc_write(sd, VENC_CLKCTL, 0x1);
 289                 venc_write(sd, VENC_VIDCTL, 0);
 290                 vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
 291         } else if (venc->venc_type == VPBE_VERSION_2) {
 292                 venc_write(sd, VENC_CLKCTL, 0x1);
 293                 venc_write(sd, VENC_VIDCTL, 0);
 294                 vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
 295         } else {
 296                 /* to set VENC CLK DIV to 1 - final clock is 54 MHz */
 297                 venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
 298                 /* Set REC656 Mode */
 299                 venc_write(sd, VENC_YCCCTL, 0x1);
 300         }
 301
 302         venc_modify(sd, VENC_SYNCCTL, 1 << VENC_SYNCCTL_OVD_SHIFT,
 303                         VENC_SYNCCTL_OVD);
 304         venc_write(sd, VENC_VMOD, 0);
 305         venc_modify(sd, VENC_VMOD,
 306                         (1 << VENC_VMOD_VIE_SHIFT),
 307                         VENC_VMOD_VIE);
 308         venc_modify(sd, VENC_VMOD,
 309                         (0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
 310         venc_modify(sd, VENC_VMOD,
 311                         (1 << VENC_VMOD_TVTYP_SHIFT),
 312                         VENC_VMOD_TVTYP);
 313         venc_write(sd, VENC_DACTST, 0x0);
 314         venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
 315
 316         return 0;
 317 }
 318
 319 #define VDAC_CONFIG_HD_V2       0x081141EF
 320 /*
 321  * venc_set_480p59_94
 322  *
 323  * This function configures the video encoder to EDTV(525p) component setting.
 324  */
 325 static int venc_set_480p59_94(struct v4l2_subdev *sd)
 326 {
 327         struct venc_state *venc = to_state(sd);
 328         struct venc_platform_data *pdata = venc->pdata;
 329
 330         v4l2_dbg(debug, 2, sd, "venc_set_480p59_94\n");
 331         if (venc->venc_type != VPBE_VERSION_1 &&
 332             venc->venc_type != VPBE_VERSION_2)
 333                 return -EINVAL;
 334
 335         /* Setup clock at VPSS & VENC for SD */
 336         if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
 337                 return -EINVAL;
 338
 339         venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
 340         venc_enabledigitaloutput(sd, 0);
 341
 342         if (venc->venc_type == VPBE_VERSION_2)
 343                 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
 344         venc_write(sd, VENC_OSDCLK0, 0);
 345         venc_write(sd, VENC_OSDCLK1, 1);
 346
 347         if (venc->venc_type == VPBE_VERSION_1) {
 348                 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
 349                             VENC_VDPRO_DAFRQ);
 350                 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
 351                             VENC_VDPRO_DAUPS);
 352         }
 353
 354         venc_write(sd, VENC_VMOD, 0);
 355         venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
 356                     VENC_VMOD_VIE);
 357         venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
 358         venc_modify(sd, VENC_VMOD, (HDTV_525P << VENC_VMOD_TVTYP_SHIFT),
 359                     VENC_VMOD_TVTYP);
 360         venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
 361                     VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
 362
 363         venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
 364
 365         return 0;
 366 }
 367
 368 /*
 369  * venc_set_625p
 370  *
 371  * This function configures the video encoder to HDTV(625p) component setting
 372  */
 373 static int venc_set_576p50(struct v4l2_subdev *sd)
 374 {
 375         struct venc_state *venc = to_state(sd);
 376         struct venc_platform_data *pdata = venc->pdata;
 377
 378         v4l2_dbg(debug, 2, sd, "venc_set_576p50\n");
 379
 380         if (venc->venc_type != VPBE_VERSION_1 &&
 381             venc->venc_type != VPBE_VERSION_2)
 382                 return -EINVAL;
 383         /* Setup clock at VPSS & VENC for SD */
 384         if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
 385                 return -EINVAL;
 386
 387         venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
 388         venc_enabledigitaloutput(sd, 0);
 389
 390         if (venc->venc_type == VPBE_VERSION_2)
 391                 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
 392
 393         venc_write(sd, VENC_OSDCLK0, 0);
 394         venc_write(sd, VENC_OSDCLK1, 1);
 395
 396         if (venc->venc_type == VPBE_VERSION_1) {
 397                 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
 398                             VENC_VDPRO_DAFRQ);
 399                 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
 400                             VENC_VDPRO_DAUPS);
 401         }
 402
 403         venc_write(sd, VENC_VMOD, 0);
 404         venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
 405                     VENC_VMOD_VIE);
 406         venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
 407         venc_modify(sd, VENC_VMOD, (HDTV_625P << VENC_VMOD_TVTYP_SHIFT),
 408                     VENC_VMOD_TVTYP);
 409
 410         venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
 411                     VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
 412         venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
 413
 414         return 0;
 415 }
 416
 417 /*
 418  * venc_set_720p60_internal - Setup 720p60 in venc for dm365 only
 419  */
 420 static int venc_set_720p60_internal(struct v4l2_subdev *sd)
 421 {
 422         struct venc_state *venc = to_state(sd);
 423         struct venc_platform_data *pdata = venc->pdata;
 424
 425         if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
 426                 return -EINVAL;
 427
 428         venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
 429         venc_enabledigitaloutput(sd, 0);
 430
 431         venc_write(sd, VENC_OSDCLK0, 0);
 432         venc_write(sd, VENC_OSDCLK1, 1);
 433
 434         venc_write(sd, VENC_VMOD, 0);
 435         /* DM365 component HD mode */
 436         venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
 437             VENC_VMOD_VIE);
 438         venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
 439         venc_modify(sd, VENC_VMOD, (HDTV_720P << VENC_VMOD_TVTYP_SHIFT),
 440                     VENC_VMOD_TVTYP);
 441         venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
 442         venc_write(sd, VENC_XHINTVL, 0);
 443         return 0;
 444 }
 445
 446 /*
 447  * venc_set_1080i30_internal - Setup 1080i30 in venc for dm365 only
 448  */
 449 static int venc_set_1080i30_internal(struct v4l2_subdev *sd)
 450 {
 451         struct venc_state *venc = to_state(sd);
 452         struct venc_platform_data *pdata = venc->pdata;
 453
 454         if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
 455                 return -EINVAL;
 456
 457         venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
 458         venc_enabledigitaloutput(sd, 0);
 459
 460         venc_write(sd, VENC_OSDCLK0, 0);
 461         venc_write(sd, VENC_OSDCLK1, 1);
 462
 463
 464         venc_write(sd, VENC_VMOD, 0);
 465         /* DM365 component HD mode */
 466         venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
 467                     VENC_VMOD_VIE);
 468         venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
 469         venc_modify(sd, VENC_VMOD, (HDTV_1080I << VENC_VMOD_TVTYP_SHIFT),
 470                     VENC_VMOD_TVTYP);
 471         venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
 472         venc_write(sd, VENC_XHINTVL, 0);
 473         return 0;
 474 }
 475
 476 static int venc_s_std_output(struct v4l2_subdev *sd, v4l2_std_id norm)
 477 {
 478         v4l2_dbg(debug, 1, sd, "venc_s_std_output\n");
 479
 480         if (norm & V4L2_STD_525_60)
 481                 return venc_set_ntsc(sd);
 482         else if (norm & V4L2_STD_625_50)
 483                 return venc_set_pal(sd);
 484
 485         return -EINVAL;
 486 }
 487
 488 static int venc_s_dv_timings(struct v4l2_subdev *sd,
 489                             struct v4l2_dv_timings *dv_timings)
 490 {
 491         struct venc_state *venc = to_state(sd);
 492         u32 height = dv_timings->bt.height;
 493         int ret;
 494
 495         v4l2_dbg(debug, 1, sd, "venc_s_dv_timings\n");
 496
 497         if (height == 576)
 498                 return venc_set_576p50(sd);
 499         else if (height == 480)
 500                 return venc_set_480p59_94(sd);
 501         else if ((height == 720) &&
 502                         (venc->venc_type == VPBE_VERSION_2)) {
 503                 /* TBD setup internal 720p mode here */
 504                 ret = venc_set_720p60_internal(sd);
 505                 /* for DM365 VPBE, there is DAC inside */
 506                 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
 507                 return ret;
 508         } else if ((height == 1080) &&
 509                 (venc->venc_type == VPBE_VERSION_2)) {
 510                 /* TBD setup internal 1080i mode here */
 511                 ret = venc_set_1080i30_internal(sd);
 512                 /* for DM365 VPBE, there is DAC inside */
 513                 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
 514                 return ret;
 515         }
 516         return -EINVAL;
 517 }
 518
 519 static int venc_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
 520                           u32 config)
 521 {
 522         struct venc_state *venc = to_state(sd);
 523         int ret;
 524
 525         v4l2_dbg(debug, 1, sd, "venc_s_routing\n");
 526
 527         ret = venc_set_dac(sd, output);
 528         if (!ret)
 529                 venc->output = output;
 530
 531         return ret;
 532 }
 533
 534 static long venc_ioctl(struct v4l2_subdev *sd,
 535                         unsigned int cmd,
 536                         void *arg)
 537 {
 538         u32 val;
 539
 540         switch (cmd) {
 541         case VENC_GET_FLD:
 542                 val = venc_read(sd, VENC_VSTAT);
 543                 *((int *)arg) = ((val & VENC_VSTAT_FIDST) ==
 544                 VENC_VSTAT_FIDST);
 545                 break;
 546         default:
 547                 v4l2_err(sd, "Wrong IOCTL cmd\n");
 548                 break;
 549         }
 550
 551         return 0;
 552 }
 553
 554 static const struct v4l2_subdev_core_ops venc_core_ops = {
 555         .ioctl      = venc_ioctl,
 556 };
 557
 558 static const struct v4l2_subdev_video_ops venc_video_ops = {
 559         .s_routing = venc_s_routing,
 560         .s_std_output = venc_s_std_output,
 561         .s_dv_timings = venc_s_dv_timings,
 562 };
 563
 564 static const struct v4l2_subdev_ops venc_ops = {
 565         .core = &venc_core_ops,
 566         .video = &venc_video_ops,
 567 };
 568
 569 static int venc_initialize(struct v4l2_subdev *sd)
 570 {
 571         struct venc_state *venc = to_state(sd);
 572         int ret;
 573
 574         /* Set default to output to composite and std to NTSC */
 575         venc->output = 0;
 576         venc->std = V4L2_STD_525_60;
 577
 578         ret = venc_s_routing(sd, 0, venc->output, 0);
 579         if (ret < 0) {
 580                 v4l2_err(sd, "Error setting output during init\n");
 581                 return -EINVAL;
 582         }
 583
 584         ret = venc_s_std_output(sd, venc->std);
 585         if (ret < 0) {
 586                 v4l2_err(sd, "Error setting std during init\n");
 587                 return -EINVAL;
 588         }
 589
 590         return ret;
 591 }
 592
 593 static int venc_device_get(struct device *dev, void *data)
 594 {
 595         struct platform_device *pdev = to_platform_device(dev);
 596         struct venc_state **venc = data;
 597
 598         if (strstr(pdev->name, "vpbe-venc") != NULL)
 599                 *venc = platform_get_drvdata(pdev);
 600
 601         return 0;
 602 }
 603
 604 struct v4l2_subdev *venc_sub_dev_init(struct v4l2_device *v4l2_dev,
 605                 const char *venc_name)
 606 {
 607         struct venc_state *venc;
 608         int err;
 609
 610         err = bus_for_each_dev(&platform_bus_type, NULL, &venc,
 611                         venc_device_get);
 612         if (venc == NULL)
 613                 return NULL;
 614
 615         v4l2_subdev_init(&venc->sd, &venc_ops);
 616
 617         strcpy(venc->sd.name, venc_name);
 618         if (v4l2_device_register_subdev(v4l2_dev, &venc->sd) < 0) {
 619                 v4l2_err(v4l2_dev,
 620                         "vpbe unable to register venc sub device\n");
 621                 return NULL;
 622         }
 623         if (venc_initialize(&venc->sd)) {
 624                 v4l2_err(v4l2_dev,
 625                         "vpbe venc initialization failed\n");
 626                 return NULL;
 627         }
 628
 629         return &venc->sd;
 630 }
 631 EXPORT_SYMBOL(venc_sub_dev_init);
 632
 633 static int venc_probe(struct platform_device *pdev)
 634 {
 635         const struct platform_device_id *pdev_id;
 636         struct venc_state *venc;
 637         struct resource *res;
 638
 639         if (!pdev->dev.platform_data) {
 640                 dev_err(&pdev->dev, "No platform data for VENC sub device");
 641                 return -EINVAL;
 642         }
 643
 644         pdev_id = platform_get_device_id(pdev);
 645         if (!pdev_id)
 646                 return -EINVAL;
 647
 648         venc = devm_kzalloc(&pdev->dev, sizeof(struct venc_state), GFP_KERNEL);
 649         if (venc == NULL)
 650                 return -ENOMEM;
 651
 652         venc->venc_type = pdev_id->driver_data;
 653         venc->pdev = &pdev->dev;
 654         venc->pdata = pdev->dev.platform_data;
 655
 656         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 657
 658         venc->venc_base = devm_ioremap_resource(&pdev->dev, res);
 659         if (IS_ERR(venc->venc_base))
 660                 return PTR_ERR(venc->venc_base);
 661
 662         if (venc->venc_type != VPBE_VERSION_1) {
 663                 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 664
 665                 venc->vdaccfg_reg = devm_ioremap_resource(&pdev->dev, res);
 666                 if (IS_ERR(venc->vdaccfg_reg))
 667                         return PTR_ERR(venc->vdaccfg_reg);
 668         }
 669         spin_lock_init(&venc->lock);
 670         platform_set_drvdata(pdev, venc);
 671         dev_notice(venc->pdev, "VENC sub device probe success\n");
 672
 673         return 0;
 674 }
 675
 676 static int venc_remove(struct platform_device *pdev)
 677 {
 678         return 0;
 679 }
 680
 681 static struct platform_driver venc_driver = {
 682         .probe          = venc_probe,
 683         .remove         = venc_remove,
 684         .driver         = {
 685                 .name   = MODULE_NAME,
 686         },
 687         .id_table       = vpbe_venc_devtype
 688 };
 689
 690 module_platform_driver(venc_driver);
 691
 692 MODULE_LICENSE("GPL");
 693 MODULE_DESCRIPTION("VPBE VENC Driver");
 694 MODULE_AUTHOR("Texas Instruments");