linux/drivers/media/usb/cpia2/cpia2_core.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/****************************************************************************
   3 *
   4 *  Filename: cpia2_core.c
   5 *
   6 *  Copyright 2001, STMicrolectronics, Inc.
   7 *      Contact:  steve.miller@st.com
   8 *
   9 *  Description:
  10 *     This is a USB driver for CPia2 based video cameras.
  11 *     The infrastructure of this driver is based on the cpia usb driver by
  12 *     Jochen Scharrlach and Johannes Erdfeldt.
  13 *
  14 *  Stripped of 2.4 stuff ready for main kernel submit by
  15 *              Alan Cox <alan@lxorguk.ukuu.org.uk>
  16 *
  17 ****************************************************************************/
  18
  19#include "cpia2.h"
  20
  21#include <linux/module.h>
  22#include <linux/slab.h>
  23#include <linux/mm.h>
  24#include <linux/vmalloc.h>
  25#include <linux/firmware.h>
  26#include <linux/sched/signal.h>
  27
  28#define FIRMWARE "cpia2/stv0672_vp4.bin"
  29MODULE_FIRMWARE(FIRMWARE);
  30
  31/* #define _CPIA2_DEBUG_ */
  32
  33#ifdef _CPIA2_DEBUG_
  34
  35static const char *block_name[] = {
  36        "System",
  37        "VC",
  38        "VP",
  39        "IDATA"
  40};
  41#endif
  42
  43static unsigned int debugs_on;  /* default 0 - DEBUG_REG */
  44
  45
  46/******************************************************************************
  47 *
  48 *  Forward Declarations
  49 *
  50 *****************************************************************************/
  51static int apply_vp_patch(struct camera_data *cam);
  52static int set_default_user_mode(struct camera_data *cam);
  53static int set_vw_size(struct camera_data *cam, int size);
  54static int configure_sensor(struct camera_data *cam,
  55                            int reqwidth, int reqheight);
  56static int config_sensor_410(struct camera_data *cam,
  57                            int reqwidth, int reqheight);
  58static int config_sensor_500(struct camera_data *cam,
  59                            int reqwidth, int reqheight);
  60static int set_all_properties(struct camera_data *cam);
  61static void wake_system(struct camera_data *cam);
  62static void set_lowlight_boost(struct camera_data *cam);
  63static void reset_camera_struct(struct camera_data *cam);
  64static int cpia2_set_high_power(struct camera_data *cam);
  65
  66/* Here we want the physical address of the memory.
  67 * This is used when initializing the contents of the
  68 * area and marking the pages as reserved.
  69 */
  70static inline unsigned long kvirt_to_pa(unsigned long adr)
  71{
  72        unsigned long kva, ret;
  73
  74        kva = (unsigned long) page_address(vmalloc_to_page((void *)adr));
  75        kva |= adr & (PAGE_SIZE-1); /* restore the offset */
  76        ret = __pa(kva);
  77        return ret;
  78}
  79
  80static void *rvmalloc(unsigned long size)
  81{
  82        void *mem;
  83        unsigned long adr;
  84
  85        /* Round it off to PAGE_SIZE */
  86        size = PAGE_ALIGN(size);
  87
  88        mem = vmalloc_32(size);
  89        if (!mem)
  90                return NULL;
  91
  92        memset(mem, 0, size);   /* Clear the ram out, no junk to the user */
  93        adr = (unsigned long) mem;
  94
  95        while ((long)size > 0) {
  96                SetPageReserved(vmalloc_to_page((void *)adr));
  97                adr += PAGE_SIZE;
  98                size -= PAGE_SIZE;
  99        }
 100        return mem;
 101}
 102
 103static void rvfree(void *mem, unsigned long size)
 104{
 105        unsigned long adr;
 106
 107        if (!mem)
 108                return;
 109
 110        size = PAGE_ALIGN(size);
 111
 112        adr = (unsigned long) mem;
 113        while ((long)size > 0) {
 114                ClearPageReserved(vmalloc_to_page((void *)adr));
 115                adr += PAGE_SIZE;
 116                size -= PAGE_SIZE;
 117        }
 118        vfree(mem);
 119}
 120
 121/******************************************************************************
 122 *
 123 *  cpia2_do_command
 124 *
 125 *  Send an arbitrary command to the camera.  For commands that read from
 126 *  the camera, copy the buffers into the proper param structures.
 127 *****************************************************************************/
 128int cpia2_do_command(struct camera_data *cam,
 129                     u32 command, u8 direction, u8 param)
 130{
 131        int retval = 0;
 132        struct cpia2_command cmd;
 133        unsigned int device = cam->params.pnp_id.device_type;
 134
 135        cmd.command = command;
 136        cmd.reg_count = 2;      /* default */
 137        cmd.direction = direction;
 138
 139        /***
 140         * Set up the command.
 141         ***/
 142        switch (command) {
 143        case CPIA2_CMD_GET_VERSION:
 144                cmd.req_mode =
 145                    CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
 146                cmd.start = CPIA2_SYSTEM_DEVICE_HI;
 147                break;
 148        case CPIA2_CMD_GET_PNP_ID:
 149                cmd.req_mode =
 150                    CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
 151                cmd.reg_count = 8;
 152                cmd.start = CPIA2_SYSTEM_DESCRIP_VID_HI;
 153                break;
 154        case CPIA2_CMD_GET_ASIC_TYPE:
 155                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
 156                cmd.start = CPIA2_VC_ASIC_ID;
 157                break;
 158        case CPIA2_CMD_GET_SENSOR:
 159                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 160                cmd.start = CPIA2_VP_SENSOR_FLAGS;
 161                break;
 162        case CPIA2_CMD_GET_VP_DEVICE:
 163                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 164                cmd.start = CPIA2_VP_DEVICEH;
 165                break;
 166        case CPIA2_CMD_SET_VP_BRIGHTNESS:
 167                cmd.buffer.block_data[0] = param;
 168                fallthrough;
 169        case CPIA2_CMD_GET_VP_BRIGHTNESS:
 170                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 171                cmd.reg_count = 1;
 172                if (device == DEVICE_STV_672)
 173                        cmd.start = CPIA2_VP4_EXPOSURE_TARGET;
 174                else
 175                        cmd.start = CPIA2_VP5_EXPOSURE_TARGET;
 176                break;
 177        case CPIA2_CMD_SET_CONTRAST:
 178                cmd.buffer.block_data[0] = param;
 179                fallthrough;
 180        case CPIA2_CMD_GET_CONTRAST:
 181                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 182                cmd.reg_count = 1;
 183                cmd.start = CPIA2_VP_YRANGE;
 184                break;
 185        case CPIA2_CMD_SET_VP_SATURATION:
 186                cmd.buffer.block_data[0] = param;
 187                fallthrough;
 188        case CPIA2_CMD_GET_VP_SATURATION:
 189                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 190                cmd.reg_count = 1;
 191                if (device == DEVICE_STV_672)
 192                        cmd.start = CPIA2_VP_SATURATION;
 193                else
 194                        cmd.start = CPIA2_VP5_MCUVSATURATION;
 195                break;
 196        case CPIA2_CMD_SET_VP_GPIO_DATA:
 197                cmd.buffer.block_data[0] = param;
 198                fallthrough;
 199        case CPIA2_CMD_GET_VP_GPIO_DATA:
 200                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 201                cmd.reg_count = 1;
 202                cmd.start = CPIA2_VP_GPIO_DATA;
 203                break;
 204        case CPIA2_CMD_SET_VP_GPIO_DIRECTION:
 205                cmd.buffer.block_data[0] = param;
 206                fallthrough;
 207        case CPIA2_CMD_GET_VP_GPIO_DIRECTION:
 208                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 209                cmd.reg_count = 1;
 210                cmd.start = CPIA2_VP_GPIO_DIRECTION;
 211                break;
 212        case CPIA2_CMD_SET_VC_MP_GPIO_DATA:
 213                cmd.buffer.block_data[0] = param;
 214                fallthrough;
 215        case CPIA2_CMD_GET_VC_MP_GPIO_DATA:
 216                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
 217                cmd.reg_count = 1;
 218                cmd.start = CPIA2_VC_MP_DATA;
 219                break;
 220        case CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION:
 221                cmd.buffer.block_data[0] = param;
 222                fallthrough;
 223        case CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION:
 224                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
 225                cmd.reg_count = 1;
 226                cmd.start = CPIA2_VC_MP_DIR;
 227                break;
 228        case CPIA2_CMD_ENABLE_PACKET_CTRL:
 229                cmd.req_mode =
 230                    CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
 231                cmd.start = CPIA2_SYSTEM_INT_PACKET_CTRL;
 232                cmd.reg_count = 1;
 233                cmd.buffer.block_data[0] = param;
 234                break;
 235        case CPIA2_CMD_SET_FLICKER_MODES:
 236                cmd.buffer.block_data[0] = param;
 237                fallthrough;
 238        case CPIA2_CMD_GET_FLICKER_MODES:
 239                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 240                cmd.reg_count = 1;
 241                cmd.start = CPIA2_VP_FLICKER_MODES;
 242                break;
 243        case CPIA2_CMD_RESET_FIFO:      /* clear fifo and enable stream block */
 244                cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
 245                cmd.reg_count = 2;
 246                cmd.start = 0;
 247                cmd.buffer.registers[0].index = CPIA2_VC_ST_CTRL;
 248                cmd.buffer.registers[0].value = CPIA2_VC_ST_CTRL_SRC_VC |
 249                    CPIA2_VC_ST_CTRL_DST_USB | CPIA2_VC_ST_CTRL_EOF_DETECT;
 250                cmd.buffer.registers[1].index = CPIA2_VC_ST_CTRL;
 251                cmd.buffer.registers[1].value = CPIA2_VC_ST_CTRL_SRC_VC |
 252                    CPIA2_VC_ST_CTRL_DST_USB |
 253                    CPIA2_VC_ST_CTRL_EOF_DETECT |
 254                    CPIA2_VC_ST_CTRL_FIFO_ENABLE;
 255                break;
 256        case CPIA2_CMD_SET_HI_POWER:
 257                cmd.req_mode =
 258                    CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_SYSTEM;
 259                cmd.reg_count = 2;
 260                cmd.buffer.registers[0].index =
 261                    CPIA2_SYSTEM_SYSTEM_CONTROL;
 262                cmd.buffer.registers[1].index =
 263                    CPIA2_SYSTEM_SYSTEM_CONTROL;
 264                cmd.buffer.registers[0].value = CPIA2_SYSTEM_CONTROL_CLEAR_ERR;
 265                cmd.buffer.registers[1].value =
 266                    CPIA2_SYSTEM_CONTROL_HIGH_POWER;
 267                break;
 268        case CPIA2_CMD_SET_LOW_POWER:
 269                cmd.req_mode =
 270                    CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
 271                cmd.reg_count = 1;
 272                cmd.start = CPIA2_SYSTEM_SYSTEM_CONTROL;
 273                cmd.buffer.block_data[0] = 0;
 274                break;
 275        case CPIA2_CMD_CLEAR_V2W_ERR:
 276                cmd.req_mode =
 277                    CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
 278                cmd.reg_count = 1;
 279                cmd.start = CPIA2_SYSTEM_SYSTEM_CONTROL;
 280                cmd.buffer.block_data[0] = CPIA2_SYSTEM_CONTROL_CLEAR_ERR;
 281                break;
 282        case CPIA2_CMD_SET_USER_MODE:
 283                cmd.buffer.block_data[0] = param;
 284                fallthrough;
 285        case CPIA2_CMD_GET_USER_MODE:
 286                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 287                cmd.reg_count = 1;
 288                if (device == DEVICE_STV_672)
 289                        cmd.start = CPIA2_VP4_USER_MODE;
 290                else
 291                        cmd.start = CPIA2_VP5_USER_MODE;
 292                break;
 293        case CPIA2_CMD_FRAMERATE_REQ:
 294                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 295                cmd.reg_count = 1;
 296                if (device == DEVICE_STV_672)
 297                        cmd.start = CPIA2_VP4_FRAMERATE_REQUEST;
 298                else
 299                        cmd.start = CPIA2_VP5_FRAMERATE_REQUEST;
 300                cmd.buffer.block_data[0] = param;
 301                break;
 302        case CPIA2_CMD_SET_WAKEUP:
 303                cmd.buffer.block_data[0] = param;
 304                fallthrough;
 305        case CPIA2_CMD_GET_WAKEUP:
 306                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
 307                cmd.reg_count = 1;
 308                cmd.start = CPIA2_VC_WAKEUP;
 309                break;
 310        case CPIA2_CMD_SET_PW_CONTROL:
 311                cmd.buffer.block_data[0] = param;
 312                fallthrough;
 313        case CPIA2_CMD_GET_PW_CONTROL:
 314                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
 315                cmd.reg_count = 1;
 316                cmd.start = CPIA2_VC_PW_CTRL;
 317                break;
 318        case CPIA2_CMD_GET_VP_SYSTEM_STATE:
 319                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 320                cmd.reg_count = 1;
 321                cmd.start = CPIA2_VP_SYSTEMSTATE;
 322                break;
 323        case CPIA2_CMD_SET_SYSTEM_CTRL:
 324                cmd.buffer.block_data[0] = param;
 325                fallthrough;
 326        case CPIA2_CMD_GET_SYSTEM_CTRL:
 327                cmd.req_mode =
 328                    CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
 329                cmd.reg_count = 1;
 330                cmd.start = CPIA2_SYSTEM_SYSTEM_CONTROL;
 331                break;
 332        case CPIA2_CMD_SET_VP_SYSTEM_CTRL:
 333                cmd.buffer.block_data[0] = param;
 334                fallthrough;
 335        case CPIA2_CMD_GET_VP_SYSTEM_CTRL:
 336                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 337                cmd.reg_count = 1;
 338                cmd.start = CPIA2_VP_SYSTEMCTRL;
 339                break;
 340        case CPIA2_CMD_SET_VP_EXP_MODES:
 341                cmd.buffer.block_data[0] = param;
 342                fallthrough;
 343        case CPIA2_CMD_GET_VP_EXP_MODES:
 344                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 345                cmd.reg_count = 1;
 346                cmd.start = CPIA2_VP_EXPOSURE_MODES;
 347                break;
 348        case CPIA2_CMD_SET_DEVICE_CONFIG:
 349                cmd.buffer.block_data[0] = param;
 350                fallthrough;
 351        case CPIA2_CMD_GET_DEVICE_CONFIG:
 352                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 353                cmd.reg_count = 1;
 354                cmd.start = CPIA2_VP_DEVICE_CONFIG;
 355                break;
 356        case CPIA2_CMD_SET_SERIAL_ADDR:
 357                cmd.buffer.block_data[0] = param;
 358                cmd.req_mode =
 359                    CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
 360                cmd.reg_count = 1;
 361                cmd.start = CPIA2_SYSTEM_VP_SERIAL_ADDR;
 362                break;
 363        case CPIA2_CMD_SET_SENSOR_CR1:
 364                cmd.buffer.block_data[0] = param;
 365                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 366                cmd.reg_count = 1;
 367                cmd.start = CPIA2_SENSOR_CR1;
 368                break;
 369        case CPIA2_CMD_SET_VC_CONTROL:
 370                cmd.buffer.block_data[0] = param;
 371                fallthrough;
 372        case CPIA2_CMD_GET_VC_CONTROL:
 373                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
 374                cmd.reg_count = 1;
 375                cmd.start = CPIA2_VC_VC_CTRL;
 376                break;
 377        case CPIA2_CMD_SET_TARGET_KB:
 378                cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
 379                cmd.reg_count = 1;
 380                cmd.buffer.registers[0].index = CPIA2_VC_VC_TARGET_KB;
 381                cmd.buffer.registers[0].value = param;
 382                break;
 383        case CPIA2_CMD_SET_DEF_JPEG_OPT:
 384                cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
 385                cmd.reg_count = 4;
 386                cmd.buffer.registers[0].index = CPIA2_VC_VC_JPEG_OPT;
 387                cmd.buffer.registers[0].value =
 388                    CPIA2_VC_VC_JPEG_OPT_DOUBLE_SQUEEZE;
 389                cmd.buffer.registers[1].index = CPIA2_VC_VC_USER_SQUEEZE;
 390                cmd.buffer.registers[1].value = 20;
 391                cmd.buffer.registers[2].index = CPIA2_VC_VC_CREEP_PERIOD;
 392                cmd.buffer.registers[2].value = 2;
 393                cmd.buffer.registers[3].index = CPIA2_VC_VC_JPEG_OPT;
 394                cmd.buffer.registers[3].value = CPIA2_VC_VC_JPEG_OPT_DEFAULT;
 395                break;
 396        case CPIA2_CMD_REHASH_VP4:
 397                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 398                cmd.reg_count = 1;
 399                cmd.start = CPIA2_VP_REHASH_VALUES;
 400                cmd.buffer.block_data[0] = param;
 401                break;
 402        case CPIA2_CMD_SET_USER_EFFECTS:  /* Note: Be careful with this as
 403                                             this register can also affect
 404                                             flicker modes */
 405                cmd.buffer.block_data[0] = param;
 406                fallthrough;
 407        case CPIA2_CMD_GET_USER_EFFECTS:
 408                cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
 409                cmd.reg_count = 1;
 410                if (device == DEVICE_STV_672)
 411                        cmd.start = CPIA2_VP4_USER_EFFECTS;
 412                else
 413                        cmd.start = CPIA2_VP5_USER_EFFECTS;
 414                break;
 415        default:
 416                LOG("DoCommand received invalid command\n");
 417                return -EINVAL;
 418        }
 419
 420        retval = cpia2_send_command(cam, &cmd);
 421        if (retval) {
 422                return retval;
 423        }
 424
 425        /***
 426         * Now copy any results from a read into the appropriate param struct.
 427         ***/
 428        switch (command) {
 429        case CPIA2_CMD_GET_VERSION:
 430                cam->params.version.firmware_revision_hi =
 431                    cmd.buffer.block_data[0];
 432                cam->params.version.firmware_revision_lo =
 433                    cmd.buffer.block_data[1];
 434                break;
 435        case CPIA2_CMD_GET_PNP_ID:
 436                cam->params.pnp_id.vendor = (cmd.buffer.block_data[0] << 8) |
 437                                            cmd.buffer.block_data[1];
 438                cam->params.pnp_id.product = (cmd.buffer.block_data[2] << 8) |
 439                                             cmd.buffer.block_data[3];
 440                cam->params.pnp_id.device_revision =
 441                        (cmd.buffer.block_data[4] << 8) |
 442                        cmd.buffer.block_data[5];
 443                if (cam->params.pnp_id.vendor == 0x553) {
 444                        if (cam->params.pnp_id.product == 0x100) {
 445                                cam->params.pnp_id.device_type = DEVICE_STV_672;
 446                        } else if (cam->params.pnp_id.product == 0x140 ||
 447                                   cam->params.pnp_id.product == 0x151) {
 448                                cam->params.pnp_id.device_type = DEVICE_STV_676;
 449                        }
 450                }
 451                break;
 452        case CPIA2_CMD_GET_ASIC_TYPE:
 453                cam->params.version.asic_id = cmd.buffer.block_data[0];
 454                cam->params.version.asic_rev = cmd.buffer.block_data[1];
 455                break;
 456        case CPIA2_CMD_GET_SENSOR:
 457                cam->params.version.sensor_flags = cmd.buffer.block_data[0];
 458                cam->params.version.sensor_rev = cmd.buffer.block_data[1];
 459                break;
 460        case CPIA2_CMD_GET_VP_DEVICE:
 461                cam->params.version.vp_device_hi = cmd.buffer.block_data[0];
 462                cam->params.version.vp_device_lo = cmd.buffer.block_data[1];
 463                break;
 464        case CPIA2_CMD_GET_VP_GPIO_DATA:
 465                cam->params.vp_params.gpio_data = cmd.buffer.block_data[0];
 466                break;
 467        case CPIA2_CMD_GET_VP_GPIO_DIRECTION:
 468                cam->params.vp_params.gpio_direction = cmd.buffer.block_data[0];
 469                break;
 470        case CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION:
 471                cam->params.vc_params.vc_mp_direction =cmd.buffer.block_data[0];
 472                break;
 473        case CPIA2_CMD_GET_VC_MP_GPIO_DATA:
 474                cam->params.vc_params.vc_mp_data = cmd.buffer.block_data[0];
 475                break;
 476        case CPIA2_CMD_GET_FLICKER_MODES:
 477                cam->params.flicker_control.cam_register =
 478                        cmd.buffer.block_data[0];
 479                break;
 480        case CPIA2_CMD_GET_WAKEUP:
 481                cam->params.vc_params.wakeup = cmd.buffer.block_data[0];
 482                break;
 483        case CPIA2_CMD_GET_PW_CONTROL:
 484                cam->params.vc_params.pw_control = cmd.buffer.block_data[0];
 485                break;
 486        case CPIA2_CMD_GET_SYSTEM_CTRL:
 487                cam->params.camera_state.system_ctrl = cmd.buffer.block_data[0];
 488                break;
 489        case CPIA2_CMD_GET_VP_SYSTEM_STATE:
 490                cam->params.vp_params.system_state = cmd.buffer.block_data[0];
 491                break;
 492        case CPIA2_CMD_GET_VP_SYSTEM_CTRL:
 493                cam->params.vp_params.system_ctrl = cmd.buffer.block_data[0];
 494                break;
 495        case CPIA2_CMD_GET_VP_EXP_MODES:
 496                cam->params.vp_params.exposure_modes = cmd.buffer.block_data[0];
 497                break;
 498        case CPIA2_CMD_GET_DEVICE_CONFIG:
 499                cam->params.vp_params.device_config = cmd.buffer.block_data[0];
 500                break;
 501        case CPIA2_CMD_GET_VC_CONTROL:
 502                cam->params.vc_params.vc_control = cmd.buffer.block_data[0];
 503                break;
 504        case CPIA2_CMD_GET_USER_MODE:
 505                cam->params.vp_params.video_mode = cmd.buffer.block_data[0];
 506                break;
 507        case CPIA2_CMD_GET_USER_EFFECTS:
 508                cam->params.vp_params.user_effects = cmd.buffer.block_data[0];
 509                break;
 510        default:
 511                break;
 512        }
 513        return retval;
 514}
 515
 516/******************************************************************************
 517 *
 518 *  cpia2_send_command
 519 *
 520 *****************************************************************************/
 521
 522#define DIR(cmd) ((cmd->direction == TRANSFER_WRITE) ? "Write" : "Read")
 523#define BINDEX(cmd) (cmd->req_mode & 0x03)
 524
 525int cpia2_send_command(struct camera_data *cam, struct cpia2_command *cmd)
 526{
 527        u8 count;
 528        u8 start;
 529        u8 *buffer;
 530        int retval;
 531
 532        switch (cmd->req_mode & 0x0c) {
 533        case CAMERAACCESS_TYPE_RANDOM:
 534                count = cmd->reg_count * sizeof(struct cpia2_register);
 535                start = 0;
 536                buffer = (u8 *) & cmd->buffer;
 537                if (debugs_on & DEBUG_REG)
 538                        DBG("%s Random: Register block %s\n", DIR(cmd),
 539                            block_name[BINDEX(cmd)]);
 540                break;
 541        case CAMERAACCESS_TYPE_BLOCK:
 542                count = cmd->reg_count;
 543                start = cmd->start;
 544                buffer = cmd->buffer.block_data;
 545                if (debugs_on & DEBUG_REG)
 546                        DBG("%s Block: Register block %s\n", DIR(cmd),
 547                            block_name[BINDEX(cmd)]);
 548                break;
 549        case CAMERAACCESS_TYPE_MASK:
 550                count = cmd->reg_count * sizeof(struct cpia2_reg_mask);
 551                start = 0;
 552                buffer = (u8 *) & cmd->buffer;
 553                if (debugs_on & DEBUG_REG)
 554                        DBG("%s Mask: Register block %s\n", DIR(cmd),
 555                            block_name[BINDEX(cmd)]);
 556                break;
 557        case CAMERAACCESS_TYPE_REPEAT:  /* For patch blocks only */
 558                count = cmd->reg_count;
 559                start = cmd->start;
 560                buffer = cmd->buffer.block_data;
 561                if (debugs_on & DEBUG_REG)
 562                        DBG("%s Repeat: Register block %s\n", DIR(cmd),
 563                            block_name[BINDEX(cmd)]);
 564                break;
 565        default:
 566                LOG("%s: invalid request mode\n",__func__);
 567                return -EINVAL;
 568        }
 569
 570        retval = cpia2_usb_transfer_cmd(cam,
 571                                        buffer,
 572                                        cmd->req_mode,
 573                                        start, count, cmd->direction);
 574#ifdef _CPIA2_DEBUG_
 575        if (debugs_on & DEBUG_REG) {
 576                int i;
 577                for (i = 0; i < cmd->reg_count; i++) {
 578                        if((cmd->req_mode & 0x0c) == CAMERAACCESS_TYPE_BLOCK)
 579                                KINFO("%s Block: [0x%02X] = 0x%02X\n",
 580                                    DIR(cmd), start + i, buffer[i]);
 581                        if((cmd->req_mode & 0x0c) == CAMERAACCESS_TYPE_RANDOM)
 582                                KINFO("%s Random: [0x%02X] = 0x%02X\n",
 583                                    DIR(cmd), cmd->buffer.registers[i].index,
 584                                    cmd->buffer.registers[i].value);
 585                }
 586        }
 587#endif
 588
 589        return retval;
 590};
 591
 592/*************
 593 * Functions to implement camera functionality
 594 *************/
 595/******************************************************************************
 596 *
 597 *  cpia2_get_version_info
 598 *
 599 *****************************************************************************/
 600static void cpia2_get_version_info(struct camera_data *cam)
 601{
 602        cpia2_do_command(cam, CPIA2_CMD_GET_VERSION, TRANSFER_READ, 0);
 603        cpia2_do_command(cam, CPIA2_CMD_GET_PNP_ID, TRANSFER_READ, 0);
 604        cpia2_do_command(cam, CPIA2_CMD_GET_ASIC_TYPE, TRANSFER_READ, 0);
 605        cpia2_do_command(cam, CPIA2_CMD_GET_SENSOR, TRANSFER_READ, 0);
 606        cpia2_do_command(cam, CPIA2_CMD_GET_VP_DEVICE, TRANSFER_READ, 0);
 607}
 608
 609/******************************************************************************
 610 *
 611 *  cpia2_reset_camera
 612 *
 613 *  Called at least during the open process, sets up initial params.
 614 *****************************************************************************/
 615int cpia2_reset_camera(struct camera_data *cam)
 616{
 617        u8 tmp_reg;
 618        int retval = 0;
 619        int target_kb;
 620        int i;
 621        struct cpia2_command cmd;
 622
 623        /***
 624         * VC setup
 625         ***/
 626        retval = configure_sensor(cam,
 627                                  cam->params.roi.width,
 628                                  cam->params.roi.height);
 629        if (retval < 0) {
 630                ERR("Couldn't configure sensor, error=%d\n", retval);
 631                return retval;
 632        }
 633
 634        /* Clear FIFO and route/enable stream block */
 635        cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
 636        cmd.direction = TRANSFER_WRITE;
 637        cmd.reg_count = 2;
 638        cmd.buffer.registers[0].index = CPIA2_VC_ST_CTRL;
 639        cmd.buffer.registers[0].value = CPIA2_VC_ST_CTRL_SRC_VC |
 640                CPIA2_VC_ST_CTRL_DST_USB | CPIA2_VC_ST_CTRL_EOF_DETECT;
 641        cmd.buffer.registers[1].index = CPIA2_VC_ST_CTRL;
 642        cmd.buffer.registers[1].value = CPIA2_VC_ST_CTRL_SRC_VC |
 643                CPIA2_VC_ST_CTRL_DST_USB |
 644                CPIA2_VC_ST_CTRL_EOF_DETECT | CPIA2_VC_ST_CTRL_FIFO_ENABLE;
 645
 646        cpia2_send_command(cam, &cmd);
 647
 648        cpia2_set_high_power(cam);
 649
 650        if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
 651                /* Enable button notification */
 652                cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_SYSTEM;
 653                cmd.buffer.registers[0].index = CPIA2_SYSTEM_INT_PACKET_CTRL;
 654                cmd.buffer.registers[0].value =
 655                        CPIA2_SYSTEM_INT_PACKET_CTRL_ENABLE_SW_XX;
 656                cmd.reg_count = 1;
 657                cpia2_send_command(cam, &cmd);
 658        }
 659
 660        schedule_timeout_interruptible(msecs_to_jiffies(100));
 661
 662        if (cam->params.pnp_id.device_type == DEVICE_STV_672)
 663                retval = apply_vp_patch(cam);
 664
 665        /* wait for vp to go to sleep */
 666        schedule_timeout_interruptible(msecs_to_jiffies(100));
 667
 668        /***
 669         * If this is a 676, apply VP5 fixes before we start streaming
 670         ***/
 671        if (cam->params.pnp_id.device_type == DEVICE_STV_676) {
 672                cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VP;
 673
 674                /* The following writes improve the picture */
 675                cmd.buffer.registers[0].index = CPIA2_VP5_MYBLACK_LEVEL;
 676                cmd.buffer.registers[0].value = 0; /* reduce from the default
 677                                                    * rec 601 pedestal of 16 */
 678                cmd.buffer.registers[1].index = CPIA2_VP5_MCYRANGE;
 679                cmd.buffer.registers[1].value = 0x92; /* increase from 100% to
 680                                                       * (256/256 - 31) to fill
 681                                                       * available range */
 682                cmd.buffer.registers[2].index = CPIA2_VP5_MYCEILING;
 683                cmd.buffer.registers[2].value = 0xFF; /* Increase from the
 684                                                       * default rec 601 ceiling
 685                                                       * of 240 */
 686                cmd.buffer.registers[3].index = CPIA2_VP5_MCUVSATURATION;
 687                cmd.buffer.registers[3].value = 0xFF; /* Increase from the rec
 688                                                       * 601 100% level (128)
 689                                                       * to 145-192 */
 690                cmd.buffer.registers[4].index = CPIA2_VP5_ANTIFLKRSETUP;
 691                cmd.buffer.registers[4].value = 0x80;  /* Inhibit the
 692                                                        * anti-flicker */
 693
 694                /* The following 4 writes are a fix to allow QVGA to work at 30 fps */
 695                cmd.buffer.registers[5].index = CPIA2_VP_RAM_ADDR_H;
 696                cmd.buffer.registers[5].value = 0x01;
 697                cmd.buffer.registers[6].index = CPIA2_VP_RAM_ADDR_L;
 698                cmd.buffer.registers[6].value = 0xE3;
 699                cmd.buffer.registers[7].index = CPIA2_VP_RAM_DATA;
 700                cmd.buffer.registers[7].value = 0x02;
 701                cmd.buffer.registers[8].index = CPIA2_VP_RAM_DATA;
 702                cmd.buffer.registers[8].value = 0xFC;
 703
 704                cmd.direction = TRANSFER_WRITE;
 705                cmd.reg_count = 9;
 706
 707                cpia2_send_command(cam, &cmd);
 708        }
 709
 710        /* Activate all settings and start the data stream */
 711        /* Set user mode */
 712        set_default_user_mode(cam);
 713
 714        /* Give VP time to wake up */
 715        schedule_timeout_interruptible(msecs_to_jiffies(100));
 716
 717        set_all_properties(cam);
 718
 719        cpia2_do_command(cam, CPIA2_CMD_GET_USER_MODE, TRANSFER_READ, 0);
 720        DBG("After SetAllProperties(cam), user mode is 0x%0X\n",
 721            cam->params.vp_params.video_mode);
 722
 723        /***
 724         * Set audio regulator off.  This and the code to set the compresison
 725         * state are too complex to form a CPIA2_CMD_, and seem to be somewhat
 726         * intertwined.  This stuff came straight from the windows driver.
 727         ***/
 728        /* Turn AutoExposure off in VP and enable the serial bridge to the sensor */
 729        cpia2_do_command(cam, CPIA2_CMD_GET_VP_SYSTEM_CTRL, TRANSFER_READ, 0);
 730        tmp_reg = cam->params.vp_params.system_ctrl;
 731        cmd.buffer.registers[0].value = tmp_reg &
 732                (tmp_reg & (CPIA2_VP_SYSTEMCTRL_HK_CONTROL ^ 0xFF));
 733
 734        cpia2_do_command(cam, CPIA2_CMD_GET_DEVICE_CONFIG, TRANSFER_READ, 0);
 735        cmd.buffer.registers[1].value = cam->params.vp_params.device_config |
 736                                        CPIA2_VP_DEVICE_CONFIG_SERIAL_BRIDGE;
 737        cmd.buffer.registers[0].index = CPIA2_VP_SYSTEMCTRL;
 738        cmd.buffer.registers[1].index = CPIA2_VP_DEVICE_CONFIG;
 739        cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VP;
 740        cmd.reg_count = 2;
 741        cmd.direction = TRANSFER_WRITE;
 742        cmd.start = 0;
 743        cpia2_send_command(cam, &cmd);
 744
 745        /* Set the correct I2C address in the CPiA-2 system register */
 746        cpia2_do_command(cam,
 747                         CPIA2_CMD_SET_SERIAL_ADDR,
 748                         TRANSFER_WRITE,
 749                         CPIA2_SYSTEM_VP_SERIAL_ADDR_SENSOR);
 750
 751        /* Now have sensor access - set bit to turn the audio regulator off */
 752        cpia2_do_command(cam,
 753                         CPIA2_CMD_SET_SENSOR_CR1,
 754                         TRANSFER_WRITE, CPIA2_SENSOR_CR1_DOWN_AUDIO_REGULATOR);
 755
 756        /* Set the correct I2C address in the CPiA-2 system register */
 757        if (cam->params.pnp_id.device_type == DEVICE_STV_672)
 758                cpia2_do_command(cam,
 759                                 CPIA2_CMD_SET_SERIAL_ADDR,
 760                                 TRANSFER_WRITE,
 761                                 CPIA2_SYSTEM_VP_SERIAL_ADDR_VP); // 0x88
 762        else
 763                cpia2_do_command(cam,
 764                                 CPIA2_CMD_SET_SERIAL_ADDR,
 765                                 TRANSFER_WRITE,
 766                                 CPIA2_SYSTEM_VP_SERIAL_ADDR_676_VP); // 0x8a
 767
 768        /* increase signal drive strength */
 769        if (cam->params.pnp_id.device_type == DEVICE_STV_676)
 770                cpia2_do_command(cam,
 771                                 CPIA2_CMD_SET_VP_EXP_MODES,
 772                                 TRANSFER_WRITE,
 773                                 CPIA2_VP_EXPOSURE_MODES_COMPILE_EXP);
 774
 775        /* Start autoexposure */
 776        cpia2_do_command(cam, CPIA2_CMD_GET_DEVICE_CONFIG, TRANSFER_READ, 0);
 777        cmd.buffer.registers[0].value = cam->params.vp_params.device_config &
 778                                  (CPIA2_VP_DEVICE_CONFIG_SERIAL_BRIDGE ^ 0xFF);
 779
 780        cpia2_do_command(cam, CPIA2_CMD_GET_VP_SYSTEM_CTRL, TRANSFER_READ, 0);
 781        cmd.buffer.registers[1].value =
 782            cam->params.vp_params.system_ctrl | CPIA2_VP_SYSTEMCTRL_HK_CONTROL;
 783
 784        cmd.buffer.registers[0].index = CPIA2_VP_DEVICE_CONFIG;
 785        cmd.buffer.registers[1].index = CPIA2_VP_SYSTEMCTRL;
 786        cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VP;
 787        cmd.reg_count = 2;
 788        cmd.direction = TRANSFER_WRITE;
 789
 790        cpia2_send_command(cam, &cmd);
 791
 792        /* Set compression state */
 793        cpia2_do_command(cam, CPIA2_CMD_GET_VC_CONTROL, TRANSFER_READ, 0);
 794        if (cam->params.compression.inhibit_htables) {
 795                tmp_reg = cam->params.vc_params.vc_control |
 796                          CPIA2_VC_VC_CTRL_INHIBIT_H_TABLES;
 797        } else  {
 798                tmp_reg = cam->params.vc_params.vc_control &
 799                          ~CPIA2_VC_VC_CTRL_INHIBIT_H_TABLES;
 800        }
 801        cpia2_do_command(cam, CPIA2_CMD_SET_VC_CONTROL, TRANSFER_WRITE,tmp_reg);
 802
 803        /* Set target size (kb) on vc
 804           This is a heuristic based on the quality parameter and the raw
 805           framesize in kB divided by 16 (the compression factor when the
 806           quality is 100%) */
 807        target_kb = (cam->width * cam->height * 2 / 16384) *
 808                                cam->params.vc_params.quality / 100;
 809        if (target_kb < 1)
 810                target_kb = 1;
 811        cpia2_do_command(cam, CPIA2_CMD_SET_TARGET_KB,
 812                         TRANSFER_WRITE, target_kb);
 813
 814        /* Wiggle VC Reset */
 815        /***
 816         * First read and wait a bit.
 817         ***/
 818        for (i = 0; i < 50; i++) {
 819                cpia2_do_command(cam, CPIA2_CMD_GET_PW_CONTROL,
 820                                 TRANSFER_READ, 0);
 821        }
 822
 823        tmp_reg = cam->params.vc_params.pw_control;
 824        tmp_reg &= ~CPIA2_VC_PW_CTRL_VC_RESET_N;
 825
 826        cpia2_do_command(cam, CPIA2_CMD_SET_PW_CONTROL, TRANSFER_WRITE,tmp_reg);
 827
 828        tmp_reg |= CPIA2_VC_PW_CTRL_VC_RESET_N;
 829        cpia2_do_command(cam, CPIA2_CMD_SET_PW_CONTROL, TRANSFER_WRITE,tmp_reg);
 830
 831        cpia2_do_command(cam, CPIA2_CMD_SET_DEF_JPEG_OPT, TRANSFER_WRITE, 0);
 832
 833        cpia2_do_command(cam, CPIA2_CMD_GET_USER_MODE, TRANSFER_READ, 0);
 834        DBG("After VC RESET, user mode is 0x%0X\n",
 835            cam->params.vp_params.video_mode);
 836
 837        return retval;
 838}
 839
 840/******************************************************************************
 841 *
 842 *  cpia2_set_high_power
 843 *
 844 *****************************************************************************/
 845static int cpia2_set_high_power(struct camera_data *cam)
 846{
 847        int i;
 848        for (i = 0; i <= 50; i++) {
 849                /* Read system status */
 850                cpia2_do_command(cam,CPIA2_CMD_GET_SYSTEM_CTRL,TRANSFER_READ,0);
 851
 852                /* If there is an error, clear it */
 853                if(cam->params.camera_state.system_ctrl &
 854                   CPIA2_SYSTEM_CONTROL_V2W_ERR)
 855                        cpia2_do_command(cam, CPIA2_CMD_CLEAR_V2W_ERR,
 856                                         TRANSFER_WRITE, 0);
 857
 858                /* Try to set high power mode */
 859                cpia2_do_command(cam, CPIA2_CMD_SET_SYSTEM_CTRL,
 860                                 TRANSFER_WRITE, 1);
 861
 862                /* Try to read something in VP to check if everything is awake */
 863                cpia2_do_command(cam, CPIA2_CMD_GET_VP_SYSTEM_STATE,
 864                                 TRANSFER_READ, 0);
 865                if (cam->params.vp_params.system_state &
 866                    CPIA2_VP_SYSTEMSTATE_HK_ALIVE) {
 867                        break;
 868                } else if (i == 50) {
 869                        cam->params.camera_state.power_mode = LO_POWER_MODE;
 870                        ERR("Camera did not wake up\n");
 871                        return -EIO;
 872                }
 873        }
 874
 875        DBG("System now in high power state\n");
 876        cam->params.camera_state.power_mode = HI_POWER_MODE;
 877        return 0;
 878}
 879
 880/******************************************************************************
 881 *
 882 *  cpia2_set_low_power
 883 *
 884 *****************************************************************************/
 885int cpia2_set_low_power(struct camera_data *cam)
 886{
 887        cam->params.camera_state.power_mode = LO_POWER_MODE;
 888        cpia2_do_command(cam, CPIA2_CMD_SET_SYSTEM_CTRL, TRANSFER_WRITE, 0);
 889        return 0;
 890}
 891
 892/******************************************************************************
 893 *
 894 *  apply_vp_patch
 895 *
 896 *****************************************************************************/
 897static int cpia2_send_onebyte_command(struct camera_data *cam,
 898                                      struct cpia2_command *cmd,
 899                                      u8 start, u8 datum)
 900{
 901        cmd->buffer.block_data[0] = datum;
 902        cmd->start = start;
 903        cmd->reg_count = 1;
 904        return cpia2_send_command(cam, cmd);
 905}
 906
 907static int apply_vp_patch(struct camera_data *cam)
 908{
 909        const struct firmware *fw;
 910        const char fw_name[] = FIRMWARE;
 911        int i, ret;
 912        struct cpia2_command cmd;
 913
 914        ret = request_firmware(&fw, fw_name, &cam->dev->dev);
 915        if (ret) {
 916                printk(KERN_ERR "cpia2: failed to load VP patch \"%s\"\n",
 917                       fw_name);
 918                return ret;
 919        }
 920
 921        cmd.req_mode = CAMERAACCESS_TYPE_REPEAT | CAMERAACCESS_VP;
 922        cmd.direction = TRANSFER_WRITE;
 923
 924        /* First send the start address... */
 925        cpia2_send_onebyte_command(cam, &cmd, 0x0A, fw->data[0]); /* hi */
 926        cpia2_send_onebyte_command(cam, &cmd, 0x0B, fw->data[1]); /* lo */
 927
 928        /* ... followed by the data payload */
 929        for (i = 2; i < fw->size; i += 64) {
 930                cmd.start = 0x0C; /* Data */
 931                cmd.reg_count = min_t(uint, 64, fw->size - i);
 932                memcpy(cmd.buffer.block_data, &fw->data[i], cmd.reg_count);
 933                cpia2_send_command(cam, &cmd);
 934        }
 935
 936        /* Next send the start address... */
 937        cpia2_send_onebyte_command(cam, &cmd, 0x0A, fw->data[0]); /* hi */
 938        cpia2_send_onebyte_command(cam, &cmd, 0x0B, fw->data[1]); /* lo */
 939
 940        /* ... followed by the 'goto' command */
 941        cpia2_send_onebyte_command(cam, &cmd, 0x0D, 1);
 942
 943        release_firmware(fw);
 944        return 0;
 945}
 946
 947/******************************************************************************
 948 *
 949 *  set_default_user_mode
 950 *
 951 *****************************************************************************/
 952static int set_default_user_mode(struct camera_data *cam)
 953{
 954        unsigned char user_mode;
 955        unsigned char frame_rate;
 956        int width = cam->params.roi.width;
 957        int height = cam->params.roi.height;
 958
 959        switch (cam->params.version.sensor_flags) {
 960        case CPIA2_VP_SENSOR_FLAGS_404:
 961        case CPIA2_VP_SENSOR_FLAGS_407:
 962        case CPIA2_VP_SENSOR_FLAGS_409:
 963        case CPIA2_VP_SENSOR_FLAGS_410:
 964                if ((width > STV_IMAGE_QCIF_COLS)
 965                    || (height > STV_IMAGE_QCIF_ROWS)) {
 966                        user_mode = CPIA2_VP_USER_MODE_CIF;
 967                } else {
 968                        user_mode = CPIA2_VP_USER_MODE_QCIFDS;
 969                }
 970                frame_rate = CPIA2_VP_FRAMERATE_30;
 971                break;
 972        case CPIA2_VP_SENSOR_FLAGS_500:
 973                if ((width > STV_IMAGE_CIF_COLS)
 974                    || (height > STV_IMAGE_CIF_ROWS)) {
 975                        user_mode = CPIA2_VP_USER_MODE_VGA;
 976                } else {
 977                        user_mode = CPIA2_VP_USER_MODE_QVGADS;
 978                }
 979                if (cam->params.pnp_id.device_type == DEVICE_STV_672)
 980                        frame_rate = CPIA2_VP_FRAMERATE_15;
 981                else
 982                        frame_rate = CPIA2_VP_FRAMERATE_30;
 983                break;
 984        default:
 985                LOG("%s: Invalid sensor flag value 0x%0X\n",__func__,
 986                    cam->params.version.sensor_flags);
 987                return -EINVAL;
 988        }
 989
 990        DBG("Sensor flag = 0x%0x, user mode = 0x%0x, frame rate = 0x%X\n",
 991            cam->params.version.sensor_flags, user_mode, frame_rate);
 992        cpia2_do_command(cam, CPIA2_CMD_SET_USER_MODE, TRANSFER_WRITE,
 993                         user_mode);
 994        if(cam->params.vp_params.frame_rate > 0 &&
 995           frame_rate > cam->params.vp_params.frame_rate)
 996                frame_rate = cam->params.vp_params.frame_rate;
 997
 998        cpia2_set_fps(cam, frame_rate);
 999
1000//      if (cam->params.pnp_id.device_type == DEVICE_STV_676)
1001//              cpia2_do_command(cam,
1002//                               CPIA2_CMD_SET_VP_SYSTEM_CTRL,
1003//                               TRANSFER_WRITE,
1004//                               CPIA2_VP_SYSTEMCTRL_HK_CONTROL |
1005//                               CPIA2_VP_SYSTEMCTRL_POWER_CONTROL);
1006
1007        return 0;
1008}
1009
1010/******************************************************************************
1011 *
1012 *  cpia2_match_video_size
1013 *
1014 *  return the best match, where 'best' is as always
1015 *  the largest that is not bigger than what is requested.
1016 *****************************************************************************/
1017int cpia2_match_video_size(int width, int height)
1018{
1019        if (width >= STV_IMAGE_VGA_COLS && height >= STV_IMAGE_VGA_ROWS)
1020                return VIDEOSIZE_VGA;
1021
1022        if (width >= STV_IMAGE_CIF_COLS && height >= STV_IMAGE_CIF_ROWS)
1023                return VIDEOSIZE_CIF;
1024
1025        if (width >= STV_IMAGE_QVGA_COLS && height >= STV_IMAGE_QVGA_ROWS)
1026                return VIDEOSIZE_QVGA;
1027
1028        if (width >= 288 && height >= 216)
1029                return VIDEOSIZE_288_216;
1030
1031        if (width >= 256 && height >= 192)
1032                return VIDEOSIZE_256_192;
1033
1034        if (width >= 224 && height >= 168)
1035                return VIDEOSIZE_224_168;
1036
1037        if (width >= 192 && height >= 144)
1038                return VIDEOSIZE_192_144;
1039
1040        if (width >= STV_IMAGE_QCIF_COLS && height >= STV_IMAGE_QCIF_ROWS)
1041                return VIDEOSIZE_QCIF;
1042
1043        return -1;
1044}
1045
1046/******************************************************************************
1047 *
1048 *  SetVideoSize
1049 *
1050 *****************************************************************************/
1051static int set_vw_size(struct camera_data *cam, int size)
1052{
1053        int retval = 0;
1054
1055        cam->params.vp_params.video_size = size;
1056
1057        switch (size) {
1058        case VIDEOSIZE_VGA:
1059                DBG("Setting size to VGA\n");
1060                cam->params.roi.width = STV_IMAGE_VGA_COLS;
1061                cam->params.roi.height = STV_IMAGE_VGA_ROWS;
1062                cam->width = STV_IMAGE_VGA_COLS;
1063                cam->height = STV_IMAGE_VGA_ROWS;
1064                break;
1065        case VIDEOSIZE_CIF:
1066                DBG("Setting size to CIF\n");
1067                cam->params.roi.width = STV_IMAGE_CIF_COLS;
1068                cam->params.roi.height = STV_IMAGE_CIF_ROWS;
1069                cam->width = STV_IMAGE_CIF_COLS;
1070                cam->height = STV_IMAGE_CIF_ROWS;
1071                break;
1072        case VIDEOSIZE_QVGA:
1073                DBG("Setting size to QVGA\n");
1074                cam->params.roi.width = STV_IMAGE_QVGA_COLS;
1075                cam->params.roi.height = STV_IMAGE_QVGA_ROWS;
1076                cam->width = STV_IMAGE_QVGA_COLS;
1077                cam->height = STV_IMAGE_QVGA_ROWS;
1078                break;
1079        case VIDEOSIZE_288_216:
1080                cam->params.roi.width = 288;
1081                cam->params.roi.height = 216;
1082                cam->width = 288;
1083                cam->height = 216;
1084                break;
1085        case VIDEOSIZE_256_192:
1086                cam->width = 256;
1087                cam->height = 192;
1088                cam->params.roi.width = 256;
1089                cam->params.roi.height = 192;
1090                break;
1091        case VIDEOSIZE_224_168:
1092                cam->width = 224;
1093                cam->height = 168;
1094                cam->params.roi.width = 224;
1095                cam->params.roi.height = 168;
1096                break;
1097        case VIDEOSIZE_192_144:
1098                cam->width = 192;
1099                cam->height = 144;
1100                cam->params.roi.width = 192;
1101                cam->params.roi.height = 144;
1102                break;
1103        case VIDEOSIZE_QCIF:
1104                DBG("Setting size to QCIF\n");
1105                cam->params.roi.width = STV_IMAGE_QCIF_COLS;
1106                cam->params.roi.height = STV_IMAGE_QCIF_ROWS;
1107                cam->width = STV_IMAGE_QCIF_COLS;
1108                cam->height = STV_IMAGE_QCIF_ROWS;
1109                break;
1110        default:
1111                retval = -EINVAL;
1112        }
1113        return retval;
1114}
1115
1116/******************************************************************************
1117 *
1118 *  configure_sensor
1119 *
1120 *****************************************************************************/
1121static int configure_sensor(struct camera_data *cam,
1122                            int req_width, int req_height)
1123{
1124        int retval;
1125
1126        switch (cam->params.version.sensor_flags) {
1127        case CPIA2_VP_SENSOR_FLAGS_404:
1128        case CPIA2_VP_SENSOR_FLAGS_407:
1129        case CPIA2_VP_SENSOR_FLAGS_409:
1130        case CPIA2_VP_SENSOR_FLAGS_410:
1131                retval = config_sensor_410(cam, req_width, req_height);
1132                break;
1133        case CPIA2_VP_SENSOR_FLAGS_500:
1134                retval = config_sensor_500(cam, req_width, req_height);
1135                break;
1136        default:
1137                return -EINVAL;
1138        }
1139
1140        return retval;
1141}
1142
1143/******************************************************************************
1144 *
1145 *  config_sensor_410
1146 *
1147 *****************************************************************************/
1148static int config_sensor_410(struct camera_data *cam,
1149                            int req_width, int req_height)
1150{
1151        struct cpia2_command cmd;
1152        int i = 0;
1153        int image_size;
1154        int image_type;
1155        int width = req_width;
1156        int height = req_height;
1157
1158        /***
1159         *  Make sure size doesn't exceed CIF.
1160         ***/
1161        if (width > STV_IMAGE_CIF_COLS)
1162                width = STV_IMAGE_CIF_COLS;
1163        if (height > STV_IMAGE_CIF_ROWS)
1164                height = STV_IMAGE_CIF_ROWS;
1165
1166        image_size = cpia2_match_video_size(width, height);
1167
1168        DBG("Config 410: width = %d, height = %d\n", width, height);
1169        DBG("Image size returned is %d\n", image_size);
1170        if (image_size >= 0) {
1171                set_vw_size(cam, image_size);
1172                width = cam->params.roi.width;
1173                height = cam->params.roi.height;
1174
1175                DBG("After set_vw_size(), width = %d, height = %d\n",
1176                    width, height);
1177                if (width <= 176 && height <= 144) {
1178                        DBG("image type = VIDEOSIZE_QCIF\n");
1179                        image_type = VIDEOSIZE_QCIF;
1180                }
1181                else if (width <= 320 && height <= 240) {
1182                        DBG("image type = VIDEOSIZE_QVGA\n");
1183                        image_type = VIDEOSIZE_QVGA;
1184                }
1185                else {
1186                        DBG("image type = VIDEOSIZE_CIF\n");
1187                        image_type = VIDEOSIZE_CIF;
1188                }
1189        } else {
1190                ERR("ConfigSensor410 failed\n");
1191                return -EINVAL;
1192        }
1193
1194        cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
1195        cmd.direction = TRANSFER_WRITE;
1196
1197        /* VC Format */
1198        cmd.buffer.registers[i].index = CPIA2_VC_VC_FORMAT;
1199        if (image_type == VIDEOSIZE_CIF) {
1200                cmd.buffer.registers[i++].value =
1201                    (u8) (CPIA2_VC_VC_FORMAT_UFIRST |
1202                          CPIA2_VC_VC_FORMAT_SHORTLINE);
1203        } else {
1204                cmd.buffer.registers[i++].value =
1205                    (u8) CPIA2_VC_VC_FORMAT_UFIRST;
1206        }
1207
1208        /* VC Clocks */
1209        cmd.buffer.registers[i].index = CPIA2_VC_VC_CLOCKS;
1210        if (image_type == VIDEOSIZE_QCIF) {
1211                if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
1212                        cmd.buffer.registers[i++].value=
1213                                (u8)(CPIA2_VC_VC_672_CLOCKS_CIF_DIV_BY_3 |
1214                                     CPIA2_VC_VC_672_CLOCKS_SCALING |
1215                                     CPIA2_VC_VC_CLOCKS_LOGDIV2);
1216                        DBG("VC_Clocks (0xc4) should be B\n");
1217                }
1218                else {
1219                        cmd.buffer.registers[i++].value=
1220                                (u8)(CPIA2_VC_VC_676_CLOCKS_CIF_DIV_BY_3 |
1221                                     CPIA2_VC_VC_CLOCKS_LOGDIV2);
1222                }
1223        } else {
1224                if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
1225                        cmd.buffer.registers[i++].value =
1226                           (u8) (CPIA2_VC_VC_672_CLOCKS_CIF_DIV_BY_3 |
1227                                 CPIA2_VC_VC_CLOCKS_LOGDIV0);
1228                }
1229                else {
1230                        cmd.buffer.registers[i++].value =
1231                           (u8) (CPIA2_VC_VC_676_CLOCKS_CIF_DIV_BY_3 |
1232                                 CPIA2_VC_VC_676_CLOCKS_SCALING |
1233                                 CPIA2_VC_VC_CLOCKS_LOGDIV0);
1234                }
1235        }
1236        DBG("VC_Clocks (0xc4) = 0x%0X\n", cmd.buffer.registers[i-1].value);
1237
1238        /* Input reqWidth from VC */
1239        cmd.buffer.registers[i].index = CPIA2_VC_VC_IHSIZE_LO;
1240        if (image_type == VIDEOSIZE_QCIF)
1241                cmd.buffer.registers[i++].value =
1242                    (u8) (STV_IMAGE_QCIF_COLS / 4);
1243        else
1244                cmd.buffer.registers[i++].value =
1245                    (u8) (STV_IMAGE_CIF_COLS / 4);
1246
1247        /* Timings */
1248        cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_HI;
1249        if (image_type == VIDEOSIZE_QCIF)
1250                cmd.buffer.registers[i++].value = (u8) 0;
1251        else
1252                cmd.buffer.registers[i++].value = (u8) 1;
1253
1254        cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_LO;
1255        if (image_type == VIDEOSIZE_QCIF)
1256                cmd.buffer.registers[i++].value = (u8) 208;
1257        else
1258                cmd.buffer.registers[i++].value = (u8) 160;
1259
1260        cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_HI;
1261        if (image_type == VIDEOSIZE_QCIF)
1262                cmd.buffer.registers[i++].value = (u8) 0;
1263        else
1264                cmd.buffer.registers[i++].value = (u8) 1;
1265
1266        cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_LO;
1267        if (image_type == VIDEOSIZE_QCIF)
1268                cmd.buffer.registers[i++].value = (u8) 160;
1269        else
1270                cmd.buffer.registers[i++].value = (u8) 64;
1271
1272        /* Output Image Size */
1273        cmd.buffer.registers[i].index = CPIA2_VC_VC_OHSIZE;
1274        cmd.buffer.registers[i++].value = cam->params.roi.width / 4;
1275
1276        cmd.buffer.registers[i].index = CPIA2_VC_VC_OVSIZE;
1277        cmd.buffer.registers[i++].value = cam->params.roi.height / 4;
1278
1279        /* Cropping */
1280        cmd.buffer.registers[i].index = CPIA2_VC_VC_HCROP;
1281        if (image_type == VIDEOSIZE_QCIF)
1282                cmd.buffer.registers[i++].value =
1283                    (u8) (((STV_IMAGE_QCIF_COLS / 4) - (width / 4)) / 2);
1284        else
1285                cmd.buffer.registers[i++].value =
1286                    (u8) (((STV_IMAGE_CIF_COLS / 4) - (width / 4)) / 2);
1287
1288        cmd.buffer.registers[i].index = CPIA2_VC_VC_VCROP;
1289        if (image_type == VIDEOSIZE_QCIF)
1290                cmd.buffer.registers[i++].value =
1291                    (u8) (((STV_IMAGE_QCIF_ROWS / 4) - (height / 4)) / 2);
1292        else
1293                cmd.buffer.registers[i++].value =
1294                    (u8) (((STV_IMAGE_CIF_ROWS / 4) - (height / 4)) / 2);
1295
1296        /* Scaling registers (defaults) */
1297        cmd.buffer.registers[i].index = CPIA2_VC_VC_HPHASE;
1298        cmd.buffer.registers[i++].value = (u8) 0;
1299
1300        cmd.buffer.registers[i].index = CPIA2_VC_VC_VPHASE;
1301        cmd.buffer.registers[i++].value = (u8) 0;
1302
1303        cmd.buffer.registers[i].index = CPIA2_VC_VC_HISPAN;
1304        cmd.buffer.registers[i++].value = (u8) 31;
1305
1306        cmd.buffer.registers[i].index = CPIA2_VC_VC_VISPAN;
1307        cmd.buffer.registers[i++].value = (u8) 31;
1308
1309        cmd.buffer.registers[i].index = CPIA2_VC_VC_HICROP;
1310        cmd.buffer.registers[i++].value = (u8) 0;
1311
1312        cmd.buffer.registers[i].index = CPIA2_VC_VC_VICROP;
1313        cmd.buffer.registers[i++].value = (u8) 0;
1314
1315        cmd.buffer.registers[i].index = CPIA2_VC_VC_HFRACT;
1316        cmd.buffer.registers[i++].value = (u8) 0x81;    /* = 8/1 = 8 (HIBYTE/LOBYTE) */
1317
1318        cmd.buffer.registers[i].index = CPIA2_VC_VC_VFRACT;
1319        cmd.buffer.registers[i++].value = (u8) 0x81;    /* = 8/1 = 8 (HIBYTE/LOBYTE) */
1320
1321        cmd.reg_count = i;
1322
1323        cpia2_send_command(cam, &cmd);
1324
1325        return i;
1326}
1327
1328
1329/******************************************************************************
1330 *
1331 *  config_sensor_500(cam)
1332 *
1333 *****************************************************************************/
1334static int config_sensor_500(struct camera_data *cam,
1335                             int req_width, int req_height)
1336{
1337        struct cpia2_command cmd;
1338        int i = 0;
1339        int image_size = VIDEOSIZE_CIF;
1340        int image_type = VIDEOSIZE_VGA;
1341        int width = req_width;
1342        int height = req_height;
1343        unsigned int device = cam->params.pnp_id.device_type;
1344
1345        image_size = cpia2_match_video_size(width, height);
1346
1347        if (width > STV_IMAGE_CIF_COLS || height > STV_IMAGE_CIF_ROWS)
1348                image_type = VIDEOSIZE_VGA;
1349        else if (width > STV_IMAGE_QVGA_COLS || height > STV_IMAGE_QVGA_ROWS)
1350                image_type = VIDEOSIZE_CIF;
1351        else if (width > STV_IMAGE_QCIF_COLS || height > STV_IMAGE_QCIF_ROWS)
1352                image_type = VIDEOSIZE_QVGA;
1353        else
1354                image_type = VIDEOSIZE_QCIF;
1355
1356        if (image_size >= 0) {
1357                set_vw_size(cam, image_size);
1358                width = cam->params.roi.width;
1359                height = cam->params.roi.height;
1360        } else {
1361                ERR("ConfigSensor500 failed\n");
1362                return -EINVAL;
1363        }
1364
1365        DBG("image_size = %d, width = %d, height = %d, type = %d\n",
1366            image_size, width, height, image_type);
1367
1368        cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
1369        cmd.direction = TRANSFER_WRITE;
1370        i = 0;
1371
1372        /* VC Format */
1373        cmd.buffer.registers[i].index = CPIA2_VC_VC_FORMAT;
1374        cmd.buffer.registers[i].value = (u8) CPIA2_VC_VC_FORMAT_UFIRST;
1375        if (image_type == VIDEOSIZE_QCIF)
1376                cmd.buffer.registers[i].value |= (u8) CPIA2_VC_VC_FORMAT_DECIMATING;
1377        i++;
1378
1379        /* VC Clocks */
1380        cmd.buffer.registers[i].index = CPIA2_VC_VC_CLOCKS;
1381        if (device == DEVICE_STV_672) {
1382                if (image_type == VIDEOSIZE_VGA)
1383                        cmd.buffer.registers[i].value =
1384                                (u8)CPIA2_VC_VC_CLOCKS_LOGDIV1;
1385                else
1386                        cmd.buffer.registers[i].value =
1387                                (u8)(CPIA2_VC_VC_672_CLOCKS_SCALING |
1388                                     CPIA2_VC_VC_CLOCKS_LOGDIV3);
1389        } else {
1390                if (image_type == VIDEOSIZE_VGA)
1391                        cmd.buffer.registers[i].value =
1392                                (u8)CPIA2_VC_VC_CLOCKS_LOGDIV0;
1393                else
1394                        cmd.buffer.registers[i].value =
1395                                (u8)(CPIA2_VC_VC_676_CLOCKS_SCALING |
1396                                     CPIA2_VC_VC_CLOCKS_LOGDIV2);
1397        }
1398        i++;
1399
1400        DBG("VC_CLOCKS = 0x%X\n", cmd.buffer.registers[i-1].value);
1401
1402        /* Input width from VP */
1403        cmd.buffer.registers[i].index = CPIA2_VC_VC_IHSIZE_LO;
1404        if (image_type == VIDEOSIZE_VGA)
1405                cmd.buffer.registers[i].value =
1406                    (u8) (STV_IMAGE_VGA_COLS / 4);
1407        else
1408                cmd.buffer.registers[i].value =
1409                    (u8) (STV_IMAGE_QVGA_COLS / 4);
1410        i++;
1411        DBG("Input width = %d\n", cmd.buffer.registers[i-1].value);
1412
1413        /* Timings */
1414        cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_HI;
1415        if (image_type == VIDEOSIZE_VGA)
1416                cmd.buffer.registers[i++].value = (u8) 2;
1417        else
1418                cmd.buffer.registers[i++].value = (u8) 1;
1419
1420        cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_LO;
1421        if (image_type == VIDEOSIZE_VGA)
1422                cmd.buffer.registers[i++].value = (u8) 250;
1423        else if (image_type == VIDEOSIZE_QVGA)
1424                cmd.buffer.registers[i++].value = (u8) 125;
1425        else
1426                cmd.buffer.registers[i++].value = (u8) 160;
1427
1428        cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_HI;
1429        if (image_type == VIDEOSIZE_VGA)
1430                cmd.buffer.registers[i++].value = (u8) 2;
1431        else
1432                cmd.buffer.registers[i++].value = (u8) 1;
1433
1434        cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_LO;
1435        if (image_type == VIDEOSIZE_VGA)
1436                cmd.buffer.registers[i++].value = (u8) 12;
1437        else if (image_type == VIDEOSIZE_QVGA)
1438                cmd.buffer.registers[i++].value = (u8) 64;
1439        else
1440                cmd.buffer.registers[i++].value = (u8) 6;
1441
1442        /* Output Image Size */
1443        cmd.buffer.registers[i].index = CPIA2_VC_VC_OHSIZE;
1444        if (image_type == VIDEOSIZE_QCIF)
1445                cmd.buffer.registers[i++].value = STV_IMAGE_CIF_COLS  / 4;
1446        else
1447                cmd.buffer.registers[i++].value = width / 4;
1448
1449        cmd.buffer.registers[i].index = CPIA2_VC_VC_OVSIZE;
1450        if (image_type == VIDEOSIZE_QCIF)
1451                cmd.buffer.registers[i++].value = STV_IMAGE_CIF_ROWS  / 4;
1452        else
1453                cmd.buffer.registers[i++].value = height / 4;
1454
1455        /* Cropping */
1456        cmd.buffer.registers[i].index = CPIA2_VC_VC_HCROP;
1457        if (image_type == VIDEOSIZE_VGA)
1458                cmd.buffer.registers[i++].value =
1459                    (u8) (((STV_IMAGE_VGA_COLS / 4) - (width / 4)) / 2);
1460        else if (image_type == VIDEOSIZE_QVGA)
1461                cmd.buffer.registers[i++].value =
1462                    (u8) (((STV_IMAGE_QVGA_COLS / 4) - (width / 4)) / 2);
1463        else if (image_type == VIDEOSIZE_CIF)
1464                cmd.buffer.registers[i++].value =
1465                    (u8) (((STV_IMAGE_CIF_COLS / 4) - (width / 4)) / 2);
1466        else /*if (image_type == VIDEOSIZE_QCIF)*/
1467                cmd.buffer.registers[i++].value =
1468                        (u8) (((STV_IMAGE_QCIF_COLS / 4) - (width / 4)) / 2);
1469
1470        cmd.buffer.registers[i].index = CPIA2_VC_VC_VCROP;
1471        if (image_type == VIDEOSIZE_VGA)
1472                cmd.buffer.registers[i++].value =
1473                    (u8) (((STV_IMAGE_VGA_ROWS / 4) - (height / 4)) / 2);
1474        else if (image_type == VIDEOSIZE_QVGA)
1475                cmd.buffer.registers[i++].value =
1476                    (u8) (((STV_IMAGE_QVGA_ROWS / 4) - (height / 4)) / 2);
1477        else if (image_type == VIDEOSIZE_CIF)
1478                cmd.buffer.registers[i++].value =
1479                    (u8) (((STV_IMAGE_CIF_ROWS / 4) - (height / 4)) / 2);
1480        else /*if (image_type == VIDEOSIZE_QCIF)*/
1481                cmd.buffer.registers[i++].value =
1482                    (u8) (((STV_IMAGE_QCIF_ROWS / 4) - (height / 4)) / 2);
1483
1484        /* Scaling registers (defaults) */
1485        cmd.buffer.registers[i].index = CPIA2_VC_VC_HPHASE;
1486        if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
1487                cmd.buffer.registers[i++].value = (u8) 36;
1488        else
1489                cmd.buffer.registers[i++].value = (u8) 0;
1490
1491        cmd.buffer.registers[i].index = CPIA2_VC_VC_VPHASE;
1492        if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
1493                cmd.buffer.registers[i++].value = (u8) 32;
1494        else
1495                cmd.buffer.registers[i++].value = (u8) 0;
1496
1497        cmd.buffer.registers[i].index = CPIA2_VC_VC_HISPAN;
1498        if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
1499                cmd.buffer.registers[i++].value = (u8) 26;
1500        else
1501                cmd.buffer.registers[i++].value = (u8) 31;
1502
1503        cmd.buffer.registers[i].index = CPIA2_VC_VC_VISPAN;
1504        if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
1505                cmd.buffer.registers[i++].value = (u8) 21;
1506        else
1507                cmd.buffer.registers[i++].value = (u8) 31;
1508
1509        cmd.buffer.registers[i].index = CPIA2_VC_VC_HICROP;
1510        cmd.buffer.registers[i++].value = (u8) 0;
1511
1512        cmd.buffer.registers[i].index = CPIA2_VC_VC_VICROP;
1513        cmd.buffer.registers[i++].value = (u8) 0;
1514
1515        cmd.buffer.registers[i].index = CPIA2_VC_VC_HFRACT;
1516        if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
1517                cmd.buffer.registers[i++].value = (u8) 0x2B;    /* 2/11 */
1518        else
1519                cmd.buffer.registers[i++].value = (u8) 0x81;    /* 8/1 */
1520
1521        cmd.buffer.registers[i].index = CPIA2_VC_VC_VFRACT;
1522        if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
1523                cmd.buffer.registers[i++].value = (u8) 0x13;    /* 1/3 */
1524        else
1525                cmd.buffer.registers[i++].value = (u8) 0x81;    /* 8/1 */
1526
1527        cmd.reg_count = i;
1528
1529        cpia2_send_command(cam, &cmd);
1530
1531        return i;
1532}
1533
1534
1535/******************************************************************************
1536 *
1537 *  setallproperties
1538 *
1539 *  This sets all user changeable properties to the values in cam->params.
1540 *****************************************************************************/
1541static int set_all_properties(struct camera_data *cam)
1542{
1543        /**
1544         * Don't set target_kb here, it will be set later.
1545         * framerate and user_mode were already set (set_default_user_mode).
1546         **/
1547
1548        cpia2_usb_change_streaming_alternate(cam,
1549                                          cam->params.camera_state.stream_mode);
1550
1551        cpia2_do_command(cam,
1552                         CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
1553                         TRANSFER_WRITE, cam->params.vp_params.gpio_direction);
1554        cpia2_do_command(cam, CPIA2_CMD_SET_VC_MP_GPIO_DATA, TRANSFER_WRITE,
1555                         cam->params.vp_params.gpio_data);
1556
1557        v4l2_ctrl_handler_setup(&cam->hdl);
1558
1559        wake_system(cam);
1560
1561        set_lowlight_boost(cam);
1562
1563        return 0;
1564}
1565
1566/******************************************************************************
1567 *
1568 *  cpia2_save_camera_state
1569 *
1570 *****************************************************************************/
1571void cpia2_save_camera_state(struct camera_data *cam)
1572{
1573        cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, TRANSFER_READ, 0);
1574        cpia2_do_command(cam, CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION, TRANSFER_READ,
1575                         0);
1576        cpia2_do_command(cam, CPIA2_CMD_GET_VC_MP_GPIO_DATA, TRANSFER_READ, 0);
1577        /* Don't get framerate or target_kb. Trust the values we already have */
1578}
1579
1580
1581/******************************************************************************
1582 *
1583 *  cpia2_set_flicker_mode
1584 *
1585 *****************************************************************************/
1586int cpia2_set_flicker_mode(struct camera_data *cam, int mode)
1587{
1588        unsigned char cam_reg;
1589        int err = 0;
1590
1591        if(cam->params.pnp_id.device_type != DEVICE_STV_672)
1592                return -EINVAL;
1593
1594        /* Set the appropriate bits in FLICKER_MODES, preserving the rest */
1595        if((err = cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
1596                                   TRANSFER_READ, 0)))
1597                return err;
1598        cam_reg = cam->params.flicker_control.cam_register;
1599
1600        switch(mode) {
1601        case NEVER_FLICKER:
1602                cam_reg |= CPIA2_VP_FLICKER_MODES_NEVER_FLICKER;
1603                cam_reg &= ~CPIA2_VP_FLICKER_MODES_50HZ;
1604                break;
1605        case FLICKER_60:
1606                cam_reg &= ~CPIA2_VP_FLICKER_MODES_NEVER_FLICKER;
1607                cam_reg &= ~CPIA2_VP_FLICKER_MODES_50HZ;
1608                break;
1609        case FLICKER_50:
1610                cam_reg &= ~CPIA2_VP_FLICKER_MODES_NEVER_FLICKER;
1611                cam_reg |= CPIA2_VP_FLICKER_MODES_50HZ;
1612                break;
1613        default:
1614                return -EINVAL;
1615        }
1616
1617        if((err = cpia2_do_command(cam, CPIA2_CMD_SET_FLICKER_MODES,
1618                                   TRANSFER_WRITE, cam_reg)))
1619                return err;
1620
1621        /* Set the appropriate bits in EXP_MODES, preserving the rest */
1622        if((err = cpia2_do_command(cam, CPIA2_CMD_GET_VP_EXP_MODES,
1623                                   TRANSFER_READ, 0)))
1624                return err;
1625        cam_reg = cam->params.vp_params.exposure_modes;
1626
1627        if (mode == NEVER_FLICKER) {
1628                cam_reg |= CPIA2_VP_EXPOSURE_MODES_INHIBIT_FLICKER;
1629        } else {
1630                cam_reg &= ~CPIA2_VP_EXPOSURE_MODES_INHIBIT_FLICKER;
1631        }
1632
1633        if((err = cpia2_do_command(cam, CPIA2_CMD_SET_VP_EXP_MODES,
1634                                   TRANSFER_WRITE, cam_reg)))
1635                return err;
1636
1637        if((err = cpia2_do_command(cam, CPIA2_CMD_REHASH_VP4,
1638                                   TRANSFER_WRITE, 1)))
1639                return err;
1640
1641        switch(mode) {
1642        case NEVER_FLICKER:
1643        case FLICKER_60:
1644        case FLICKER_50:
1645                cam->params.flicker_control.flicker_mode_req = mode;
1646                break;
1647        default:
1648                err = -EINVAL;
1649        }
1650
1651        return err;
1652}
1653
1654/******************************************************************************
1655 *
1656 *  cpia2_set_property_flip
1657 *
1658 *****************************************************************************/
1659void cpia2_set_property_flip(struct camera_data *cam, int prop_val)
1660{
1661        unsigned char cam_reg;
1662
1663        cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, TRANSFER_READ, 0);
1664        cam_reg = cam->params.vp_params.user_effects;
1665
1666        if (prop_val)
1667        {
1668                cam_reg |= CPIA2_VP_USER_EFFECTS_FLIP;
1669        }
1670        else
1671        {
1672                cam_reg &= ~CPIA2_VP_USER_EFFECTS_FLIP;
1673        }
1674        cam->params.vp_params.user_effects = cam_reg;
1675        cpia2_do_command(cam, CPIA2_CMD_SET_USER_EFFECTS, TRANSFER_WRITE,
1676                         cam_reg);
1677}
1678
1679/******************************************************************************
1680 *
1681 *  cpia2_set_property_mirror
1682 *
1683 *****************************************************************************/
1684void cpia2_set_property_mirror(struct camera_data *cam, int prop_val)
1685{
1686        unsigned char cam_reg;
1687
1688        cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, TRANSFER_READ, 0);
1689        cam_reg = cam->params.vp_params.user_effects;
1690
1691        if (prop_val)
1692        {
1693                cam_reg |= CPIA2_VP_USER_EFFECTS_MIRROR;
1694        }
1695        else
1696        {
1697                cam_reg &= ~CPIA2_VP_USER_EFFECTS_MIRROR;
1698        }
1699        cam->params.vp_params.user_effects = cam_reg;
1700        cpia2_do_command(cam, CPIA2_CMD_SET_USER_EFFECTS, TRANSFER_WRITE,
1701                         cam_reg);
1702}
1703
1704/******************************************************************************
1705 *
1706 *  cpia2_set_gpio
1707 *
1708 *****************************************************************************/
1709int cpia2_set_gpio(struct camera_data *cam, unsigned char setting)
1710{
1711        int ret;
1712
1713        /* Set the microport direction (register 0x90, should be defined
1714         * already) to 1 (user output), and set the microport data (0x91) to
1715         * the value in the ioctl argument.
1716         */
1717
1718        ret = cpia2_do_command(cam,
1719                               CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
1720                               CPIA2_VC_MP_DIR_OUTPUT,
1721                               255);
1722        if (ret < 0)
1723                return ret;
1724        cam->params.vp_params.gpio_direction = 255;
1725
1726        ret = cpia2_do_command(cam,
1727                               CPIA2_CMD_SET_VC_MP_GPIO_DATA,
1728                               CPIA2_VC_MP_DIR_OUTPUT,
1729                               setting);
1730        if (ret < 0)
1731                return ret;
1732        cam->params.vp_params.gpio_data = setting;
1733
1734        return 0;
1735}
1736
1737/******************************************************************************
1738 *
1739 *  cpia2_set_fps
1740 *
1741 *****************************************************************************/
1742int cpia2_set_fps(struct camera_data *cam, int framerate)
1743{
1744        int retval;
1745
1746        switch(framerate) {
1747                case CPIA2_VP_FRAMERATE_30:
1748                case CPIA2_VP_FRAMERATE_25:
1749                        if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1750                           cam->params.version.sensor_flags ==
1751                                                    CPIA2_VP_SENSOR_FLAGS_500) {
1752                                return -EINVAL;
1753                        }
1754                        fallthrough;
1755                case CPIA2_VP_FRAMERATE_15:
1756                case CPIA2_VP_FRAMERATE_12_5:
1757                case CPIA2_VP_FRAMERATE_7_5:
1758                case CPIA2_VP_FRAMERATE_6_25:
1759                        break;
1760                default:
1761                        return -EINVAL;
1762        }
1763
1764        if (cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1765            framerate == CPIA2_VP_FRAMERATE_15)
1766                framerate = 0; /* Work around bug in VP4 */
1767
1768        retval = cpia2_do_command(cam,
1769                                 CPIA2_CMD_FRAMERATE_REQ,
1770                                 TRANSFER_WRITE,
1771                                 framerate);
1772
1773        if(retval == 0)
1774                cam->params.vp_params.frame_rate = framerate;
1775
1776        return retval;
1777}
1778
1779/******************************************************************************
1780 *
1781 *  cpia2_set_brightness
1782 *
1783 *****************************************************************************/
1784void cpia2_set_brightness(struct camera_data *cam, unsigned char value)
1785{
1786        /***
1787         * Don't let the register be set to zero - bug in VP4 - flash of full
1788         * brightness
1789         ***/
1790        if (cam->params.pnp_id.device_type == DEVICE_STV_672 && value == 0)
1791                value++;
1792        DBG("Setting brightness to %d (0x%0x)\n", value, value);
1793        cpia2_do_command(cam, CPIA2_CMD_SET_VP_BRIGHTNESS, TRANSFER_WRITE, value);
1794}
1795
1796/******************************************************************************
1797 *
1798 *  cpia2_set_contrast
1799 *
1800 *****************************************************************************/
1801void cpia2_set_contrast(struct camera_data *cam, unsigned char value)
1802{
1803        DBG("Setting contrast to %d (0x%0x)\n", value, value);
1804        cpia2_do_command(cam, CPIA2_CMD_SET_CONTRAST, TRANSFER_WRITE, value);
1805}
1806
1807/******************************************************************************
1808 *
1809 *  cpia2_set_saturation
1810 *
1811 *****************************************************************************/
1812void cpia2_set_saturation(struct camera_data *cam, unsigned char value)
1813{
1814        DBG("Setting saturation to %d (0x%0x)\n", value, value);
1815        cpia2_do_command(cam,CPIA2_CMD_SET_VP_SATURATION, TRANSFER_WRITE,value);
1816}
1817
1818/******************************************************************************
1819 *
1820 *  wake_system
1821 *
1822 *****************************************************************************/
1823static void wake_system(struct camera_data *cam)
1824{
1825        cpia2_do_command(cam, CPIA2_CMD_SET_WAKEUP, TRANSFER_WRITE, 0);
1826}
1827
1828/******************************************************************************
1829 *
1830 *  set_lowlight_boost
1831 *
1832 *  Valid for STV500 sensor only
1833 *****************************************************************************/
1834static void set_lowlight_boost(struct camera_data *cam)
1835{
1836        struct cpia2_command cmd;
1837
1838        if (cam->params.pnp_id.device_type != DEVICE_STV_672 ||
1839            cam->params.version.sensor_flags != CPIA2_VP_SENSOR_FLAGS_500)
1840                return;
1841
1842        cmd.direction = TRANSFER_WRITE;
1843        cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
1844        cmd.reg_count = 3;
1845        cmd.start = CPIA2_VP_RAM_ADDR_H;
1846
1847        cmd.buffer.block_data[0] = 0;   /* High byte of address to write to */
1848        cmd.buffer.block_data[1] = 0x59;        /* Low byte of address to write to */
1849        cmd.buffer.block_data[2] = 0;   /* High byte of data to write */
1850
1851        cpia2_send_command(cam, &cmd);
1852
1853        if (cam->params.vp_params.lowlight_boost) {
1854                cmd.buffer.block_data[0] = 0x02;        /* Low byte data to write */
1855        } else {
1856                cmd.buffer.block_data[0] = 0x06;
1857        }
1858        cmd.start = CPIA2_VP_RAM_DATA;
1859        cmd.reg_count = 1;
1860        cpia2_send_command(cam, &cmd);
1861
1862        /* Rehash the VP4 values */
1863        cpia2_do_command(cam, CPIA2_CMD_REHASH_VP4, TRANSFER_WRITE, 1);
1864}
1865
1866/******************************************************************************
1867 *
1868 *  cpia2_set_format
1869 *
1870 *  Assumes that new size is already set in param struct.
1871 *****************************************************************************/
1872void cpia2_set_format(struct camera_data *cam)
1873{
1874        cam->flush = true;
1875
1876        cpia2_usb_stream_pause(cam);
1877
1878        /* reset camera to new size */
1879        cpia2_set_low_power(cam);
1880        cpia2_reset_camera(cam);
1881        cam->flush = false;
1882
1883        cpia2_dbg_dump_registers(cam);
1884
1885        cpia2_usb_stream_resume(cam);
1886}
1887
1888/******************************************************************************
1889 *
1890 * cpia2_dbg_dump_registers
1891 *
1892 *****************************************************************************/
1893void cpia2_dbg_dump_registers(struct camera_data *cam)
1894{
1895#ifdef _CPIA2_DEBUG_
1896        struct cpia2_command cmd;
1897
1898        if (!(debugs_on & DEBUG_DUMP_REGS))
1899                return;
1900
1901        cmd.direction = TRANSFER_READ;
1902
1903        /* Start with bank 0 (SYSTEM) */
1904        cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
1905        cmd.reg_count = 3;
1906        cmd.start = 0;
1907        cpia2_send_command(cam, &cmd);
1908        printk(KERN_DEBUG "System Device Hi      = 0x%X\n",
1909               cmd.buffer.block_data[0]);
1910        printk(KERN_DEBUG "System Device Lo      = 0x%X\n",
1911               cmd.buffer.block_data[1]);
1912        printk(KERN_DEBUG "System_system control = 0x%X\n",
1913               cmd.buffer.block_data[2]);
1914
1915        /* Bank 1 (VC) */
1916        cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
1917        cmd.reg_count = 4;
1918        cmd.start = 0x80;
1919        cpia2_send_command(cam, &cmd);
1920        printk(KERN_DEBUG "ASIC_ID       = 0x%X\n",
1921               cmd.buffer.block_data[0]);
1922        printk(KERN_DEBUG "ASIC_REV      = 0x%X\n",
1923               cmd.buffer.block_data[1]);
1924        printk(KERN_DEBUG "PW_CONTRL     = 0x%X\n",
1925               cmd.buffer.block_data[2]);
1926        printk(KERN_DEBUG "WAKEUP        = 0x%X\n",
1927               cmd.buffer.block_data[3]);
1928
1929        cmd.start = 0xA0;       /* ST_CTRL */
1930        cmd.reg_count = 1;
1931        cpia2_send_command(cam, &cmd);
1932        printk(KERN_DEBUG "Stream ctrl   = 0x%X\n",
1933               cmd.buffer.block_data[0]);
1934
1935        cmd.start = 0xA4;       /* Stream status */
1936        cpia2_send_command(cam, &cmd);
1937        printk(KERN_DEBUG "Stream status = 0x%X\n",
1938               cmd.buffer.block_data[0]);
1939
1940        cmd.start = 0xA8;       /* USB status */
1941        cmd.reg_count = 3;
1942        cpia2_send_command(cam, &cmd);
1943        printk(KERN_DEBUG "USB_CTRL      = 0x%X\n",
1944               cmd.buffer.block_data[0]);
1945        printk(KERN_DEBUG "USB_STRM      = 0x%X\n",
1946               cmd.buffer.block_data[1]);
1947        printk(KERN_DEBUG "USB_STATUS    = 0x%X\n",
1948               cmd.buffer.block_data[2]);
1949
1950        cmd.start = 0xAF;       /* USB settings */
1951        cmd.reg_count = 1;
1952        cpia2_send_command(cam, &cmd);
1953        printk(KERN_DEBUG "USB settings  = 0x%X\n",
1954               cmd.buffer.block_data[0]);
1955
1956        cmd.start = 0xC0;       /* VC stuff */
1957        cmd.reg_count = 26;
1958        cpia2_send_command(cam, &cmd);
1959        printk(KERN_DEBUG "VC Control    = 0x%0X\n",
1960               cmd.buffer.block_data[0]);
1961        printk(KERN_DEBUG "VC Format     = 0x%0X\n",
1962               cmd.buffer.block_data[3]);
1963        printk(KERN_DEBUG "VC Clocks     = 0x%0X\n",
1964               cmd.buffer.block_data[4]);
1965        printk(KERN_DEBUG "VC IHSize     = 0x%0X\n",
1966               cmd.buffer.block_data[5]);
1967        printk(KERN_DEBUG "VC Xlim Hi    = 0x%0X\n",
1968               cmd.buffer.block_data[6]);
1969        printk(KERN_DEBUG "VC XLim Lo    = 0x%0X\n",
1970               cmd.buffer.block_data[7]);
1971        printk(KERN_DEBUG "VC YLim Hi    = 0x%0X\n",
1972               cmd.buffer.block_data[8]);
1973        printk(KERN_DEBUG "VC YLim Lo    = 0x%0X\n",
1974               cmd.buffer.block_data[9]);
1975        printk(KERN_DEBUG "VC OHSize     = 0x%0X\n",
1976               cmd.buffer.block_data[10]);
1977        printk(KERN_DEBUG "VC OVSize     = 0x%0X\n",
1978               cmd.buffer.block_data[11]);
1979        printk(KERN_DEBUG "VC HCrop      = 0x%0X\n",
1980               cmd.buffer.block_data[12]);
1981        printk(KERN_DEBUG "VC VCrop      = 0x%0X\n",
1982               cmd.buffer.block_data[13]);
1983        printk(KERN_DEBUG "VC HPhase     = 0x%0X\n",
1984               cmd.buffer.block_data[14]);
1985        printk(KERN_DEBUG "VC VPhase     = 0x%0X\n",
1986               cmd.buffer.block_data[15]);
1987        printk(KERN_DEBUG "VC HIspan     = 0x%0X\n",
1988               cmd.buffer.block_data[16]);
1989        printk(KERN_DEBUG "VC VIspan     = 0x%0X\n",
1990               cmd.buffer.block_data[17]);
1991        printk(KERN_DEBUG "VC HiCrop     = 0x%0X\n",
1992               cmd.buffer.block_data[18]);
1993        printk(KERN_DEBUG "VC ViCrop     = 0x%0X\n",
1994               cmd.buffer.block_data[19]);
1995        printk(KERN_DEBUG "VC HiFract    = 0x%0X\n",
1996               cmd.buffer.block_data[20]);
1997        printk(KERN_DEBUG "VC ViFract    = 0x%0X\n",
1998               cmd.buffer.block_data[21]);
1999        printk(KERN_DEBUG "VC JPeg Opt   = 0x%0X\n",
2000               cmd.buffer.block_data[22]);
2001        printk(KERN_DEBUG "VC Creep Per  = 0x%0X\n",
2002               cmd.buffer.block_data[23]);
2003        printk(KERN_DEBUG "VC User Sq.   = 0x%0X\n",
2004               cmd.buffer.block_data[24]);
2005        printk(KERN_DEBUG "VC Target KB  = 0x%0X\n",
2006               cmd.buffer.block_data[25]);
2007
2008        /*** VP ***/
2009        cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
2010        cmd.reg_count = 14;
2011        cmd.start = 0;
2012        cpia2_send_command(cam, &cmd);
2013
2014        printk(KERN_DEBUG "VP Dev Hi     = 0x%0X\n",
2015               cmd.buffer.block_data[0]);
2016        printk(KERN_DEBUG "VP Dev Lo     = 0x%0X\n",
2017               cmd.buffer.block_data[1]);
2018        printk(KERN_DEBUG "VP Sys State  = 0x%0X\n",
2019               cmd.buffer.block_data[2]);
2020        printk(KERN_DEBUG "VP Sys Ctrl   = 0x%0X\n",
2021               cmd.buffer.block_data[3]);
2022        printk(KERN_DEBUG "VP Sensor flg = 0x%0X\n",
2023               cmd.buffer.block_data[5]);
2024        printk(KERN_DEBUG "VP Sensor Rev = 0x%0X\n",
2025               cmd.buffer.block_data[6]);
2026        printk(KERN_DEBUG "VP Dev Config = 0x%0X\n",
2027               cmd.buffer.block_data[7]);
2028        printk(KERN_DEBUG "VP GPIO_DIR   = 0x%0X\n",
2029               cmd.buffer.block_data[8]);
2030        printk(KERN_DEBUG "VP GPIO_DATA  = 0x%0X\n",
2031               cmd.buffer.block_data[9]);
2032        printk(KERN_DEBUG "VP Ram ADDR H = 0x%0X\n",
2033               cmd.buffer.block_data[10]);
2034        printk(KERN_DEBUG "VP Ram ADDR L = 0x%0X\n",
2035               cmd.buffer.block_data[11]);
2036        printk(KERN_DEBUG "VP RAM Data   = 0x%0X\n",
2037               cmd.buffer.block_data[12]);
2038        printk(KERN_DEBUG "Do Call       = 0x%0X\n",
2039               cmd.buffer.block_data[13]);
2040
2041        if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
2042                cmd.reg_count = 9;
2043                cmd.start = 0x0E;
2044                cpia2_send_command(cam, &cmd);
2045                printk(KERN_DEBUG "VP Clock Ctrl = 0x%0X\n",
2046                       cmd.buffer.block_data[0]);
2047                printk(KERN_DEBUG "VP Patch Rev  = 0x%0X\n",
2048                       cmd.buffer.block_data[1]);
2049                printk(KERN_DEBUG "VP Vid Mode   = 0x%0X\n",
2050                       cmd.buffer.block_data[2]);
2051                printk(KERN_DEBUG "VP Framerate  = 0x%0X\n",
2052                       cmd.buffer.block_data[3]);
2053                printk(KERN_DEBUG "VP UserEffect = 0x%0X\n",
2054                       cmd.buffer.block_data[4]);
2055                printk(KERN_DEBUG "VP White Bal  = 0x%0X\n",
2056                       cmd.buffer.block_data[5]);
2057                printk(KERN_DEBUG "VP WB thresh  = 0x%0X\n",
2058                       cmd.buffer.block_data[6]);
2059                printk(KERN_DEBUG "VP Exp Modes  = 0x%0X\n",
2060                       cmd.buffer.block_data[7]);
2061                printk(KERN_DEBUG "VP Exp Target = 0x%0X\n",
2062                       cmd.buffer.block_data[8]);
2063
2064                cmd.reg_count = 1;
2065                cmd.start = 0x1B;
2066                cpia2_send_command(cam, &cmd);
2067                printk(KERN_DEBUG "VP FlickerMds = 0x%0X\n",
2068                       cmd.buffer.block_data[0]);
2069        } else {
2070                cmd.reg_count = 8 ;
2071                cmd.start = 0x0E;
2072                cpia2_send_command(cam, &cmd);
2073                printk(KERN_DEBUG "VP Clock Ctrl = 0x%0X\n",
2074                       cmd.buffer.block_data[0]);
2075                printk(KERN_DEBUG "VP Patch Rev  = 0x%0X\n",
2076                       cmd.buffer.block_data[1]);
2077                printk(KERN_DEBUG "VP Vid Mode   = 0x%0X\n",
2078                       cmd.buffer.block_data[5]);
2079                printk(KERN_DEBUG "VP Framerate  = 0x%0X\n",
2080                       cmd.buffer.block_data[6]);
2081                printk(KERN_DEBUG "VP UserEffect = 0x%0X\n",
2082                       cmd.buffer.block_data[7]);
2083
2084                cmd.reg_count = 1;
2085                cmd.start = CPIA2_VP5_EXPOSURE_TARGET;
2086                cpia2_send_command(cam, &cmd);
2087                printk(KERN_DEBUG "VP5 Exp Target= 0x%0X\n",
2088                       cmd.buffer.block_data[0]);
2089
2090                cmd.reg_count = 4;
2091                cmd.start = 0x3A;
2092                cpia2_send_command(cam, &cmd);
2093                printk(KERN_DEBUG "VP5 MY Black  = 0x%0X\n",
2094                       cmd.buffer.block_data[0]);
2095                printk(KERN_DEBUG "VP5 MCY Range = 0x%0X\n",
2096                       cmd.buffer.block_data[1]);
2097                printk(KERN_DEBUG "VP5 MYCEILING = 0x%0X\n",
2098                       cmd.buffer.block_data[2]);
2099                printk(KERN_DEBUG "VP5 MCUV Sat  = 0x%0X\n",
2100                       cmd.buffer.block_data[3]);
2101        }
2102#endif
2103}
2104
2105/******************************************************************************
2106 *
2107 *  reset_camera_struct
2108 *
2109 *  Sets all values to the defaults
2110 *****************************************************************************/
2111static void reset_camera_struct(struct camera_data *cam)
2112{
2113        /***
2114         * The following parameter values are the defaults from the register map.
2115         ***/
2116        cam->params.vp_params.lowlight_boost = 0;
2117
2118        /* FlickerModes */
2119        cam->params.flicker_control.flicker_mode_req = NEVER_FLICKER;
2120
2121        /* jpeg params */
2122        cam->params.compression.jpeg_options = CPIA2_VC_VC_JPEG_OPT_DEFAULT;
2123        cam->params.compression.creep_period = 2;
2124        cam->params.compression.user_squeeze = 20;
2125        cam->params.compression.inhibit_htables = false;
2126
2127        /* gpio params */
2128        cam->params.vp_params.gpio_direction = 0;       /* write, the default safe mode */
2129        cam->params.vp_params.gpio_data = 0;
2130
2131        /* Target kb params */
2132        cam->params.vc_params.quality = 100;
2133
2134        /***
2135         * Set Sensor FPS as fast as possible.
2136         ***/
2137        if(cam->params.pnp_id.device_type == DEVICE_STV_672) {
2138                if(cam->params.version.sensor_flags == CPIA2_VP_SENSOR_FLAGS_500)
2139                        cam->params.vp_params.frame_rate = CPIA2_VP_FRAMERATE_15;
2140                else
2141                        cam->params.vp_params.frame_rate = CPIA2_VP_FRAMERATE_30;
2142        } else {
2143                cam->params.vp_params.frame_rate = CPIA2_VP_FRAMERATE_30;
2144        }
2145
2146        /***
2147         * Set default video mode as large as possible :
2148         * for vga sensor set to vga, for cif sensor set to CIF.
2149         ***/
2150        if (cam->params.version.sensor_flags == CPIA2_VP_SENSOR_FLAGS_500) {
2151                cam->sensor_type = CPIA2_SENSOR_500;
2152                cam->video_size = VIDEOSIZE_VGA;
2153                cam->params.roi.width = STV_IMAGE_VGA_COLS;
2154                cam->params.roi.height = STV_IMAGE_VGA_ROWS;
2155        } else {
2156                cam->sensor_type = CPIA2_SENSOR_410;
2157                cam->video_size = VIDEOSIZE_CIF;
2158                cam->params.roi.width = STV_IMAGE_CIF_COLS;
2159                cam->params.roi.height = STV_IMAGE_CIF_ROWS;
2160        }
2161
2162        cam->width = cam->params.roi.width;
2163        cam->height = cam->params.roi.height;
2164}
2165
2166/******************************************************************************
2167 *
2168 *  cpia2_init_camera_struct
2169 *
2170 *  Deinitialize camera struct
2171 *****************************************************************************/
2172void cpia2_deinit_camera_struct(struct camera_data *cam, struct usb_interface *intf)
2173{
2174        v4l2_device_unregister(&cam->v4l2_dev);
2175        kfree(cam);
2176}
2177
2178/******************************************************************************
2179 *
2180 *  cpia2_init_camera_struct
2181 *
2182 *  Initializes camera struct, does not call reset to fill in defaults.
2183 *****************************************************************************/
2184struct camera_data *cpia2_init_camera_struct(struct usb_interface *intf)
2185{
2186        struct camera_data *cam;
2187
2188        cam = kzalloc(sizeof(*cam), GFP_KERNEL);
2189
2190        if (!cam) {
2191                ERR("couldn't kmalloc cpia2 struct\n");
2192                return NULL;
2193        }
2194
2195        cam->v4l2_dev.release = cpia2_camera_release;
2196        if (v4l2_device_register(&intf->dev, &cam->v4l2_dev) < 0) {
2197                v4l2_err(&cam->v4l2_dev, "couldn't register v4l2_device\n");
2198                kfree(cam);
2199                return NULL;
2200        }
2201
2202        mutex_init(&cam->v4l2_lock);
2203        init_waitqueue_head(&cam->wq_stream);
2204
2205        return cam;
2206}
2207
2208/******************************************************************************
2209 *
2210 *  cpia2_init_camera
2211 *
2212 *  Initializes camera.
2213 *****************************************************************************/
2214int cpia2_init_camera(struct camera_data *cam)
2215{
2216        DBG("Start\n");
2217
2218        cam->mmapped = false;
2219
2220        /* Get sensor and asic types before reset. */
2221        cpia2_set_high_power(cam);
2222        cpia2_get_version_info(cam);
2223        if (cam->params.version.asic_id != CPIA2_ASIC_672) {
2224                ERR("Device IO error (asicID has incorrect value of 0x%X\n",
2225                    cam->params.version.asic_id);
2226                return -ENODEV;
2227        }
2228
2229        /* Set GPIO direction and data to a safe state. */
2230        cpia2_do_command(cam, CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
2231                         TRANSFER_WRITE, 0);
2232        cpia2_do_command(cam, CPIA2_CMD_SET_VC_MP_GPIO_DATA,
2233                         TRANSFER_WRITE, 0);
2234
2235        /* resetting struct requires version info for sensor and asic types */
2236        reset_camera_struct(cam);
2237
2238        cpia2_set_low_power(cam);
2239
2240        DBG("End\n");
2241
2242        return 0;
2243}
2244
2245/******************************************************************************
2246 *
2247 *  cpia2_allocate_buffers
2248 *
2249 *****************************************************************************/
2250int cpia2_allocate_buffers(struct camera_data *cam)
2251{
2252        int i;
2253
2254        if(!cam->buffers) {
2255                u32 size = cam->num_frames*sizeof(struct framebuf);
2256                cam->buffers = kmalloc(size, GFP_KERNEL);
2257                if(!cam->buffers) {
2258                        ERR("couldn't kmalloc frame buffer structures\n");
2259                        return -ENOMEM;
2260                }
2261        }
2262
2263        if(!cam->frame_buffer) {
2264                cam->frame_buffer = rvmalloc(cam->frame_size*cam->num_frames);
2265                if (!cam->frame_buffer) {
2266                        ERR("couldn't vmalloc frame buffer data area\n");
2267                        kfree(cam->buffers);
2268                        cam->buffers = NULL;
2269                        return -ENOMEM;
2270                }
2271        }
2272
2273        for(i=0; i<cam->num_frames-1; ++i) {
2274                cam->buffers[i].next = &cam->buffers[i+1];
2275                cam->buffers[i].data = cam->frame_buffer +i*cam->frame_size;
2276                cam->buffers[i].status = FRAME_EMPTY;
2277                cam->buffers[i].length = 0;
2278                cam->buffers[i].max_length = 0;
2279                cam->buffers[i].num = i;
2280        }
2281        cam->buffers[i].next = cam->buffers;
2282        cam->buffers[i].data = cam->frame_buffer +i*cam->frame_size;
2283        cam->buffers[i].status = FRAME_EMPTY;
2284        cam->buffers[i].length = 0;
2285        cam->buffers[i].max_length = 0;
2286        cam->buffers[i].num = i;
2287        cam->curbuff = cam->buffers;
2288        cam->workbuff = cam->curbuff->next;
2289        DBG("buffers=%p, curbuff=%p, workbuff=%p\n", cam->buffers, cam->curbuff,
2290            cam->workbuff);
2291        return 0;
2292}
2293
2294/******************************************************************************
2295 *
2296 *  cpia2_free_buffers
2297 *
2298 *****************************************************************************/
2299void cpia2_free_buffers(struct camera_data *cam)
2300{
2301        if(cam->buffers) {
2302                kfree(cam->buffers);
2303                cam->buffers = NULL;
2304        }
2305        if(cam->frame_buffer) {
2306                rvfree(cam->frame_buffer, cam->frame_size*cam->num_frames);
2307                cam->frame_buffer = NULL;
2308        }
2309}
2310
2311/******************************************************************************
2312 *
2313 *  cpia2_read
2314 *
2315 *****************************************************************************/
2316long cpia2_read(struct camera_data *cam,
2317                char __user *buf, unsigned long count, int noblock)
2318{
2319        struct framebuf *frame;
2320
2321        if (!count)
2322                return 0;
2323
2324        if (!buf) {
2325                ERR("%s: buffer NULL\n",__func__);
2326                return -EINVAL;
2327        }
2328
2329        if (!cam) {
2330                ERR("%s: Internal error, camera_data NULL!\n",__func__);
2331                return -EINVAL;
2332        }
2333
2334        if (!cam->streaming) {
2335                /* Start streaming */
2336                cpia2_usb_stream_start(cam,
2337                                       cam->params.camera_state.stream_mode);
2338        }
2339
2340        /* Copy cam->curbuff in case it changes while we're processing */
2341        frame = cam->curbuff;
2342        if (noblock && frame->status != FRAME_READY) {
2343                return -EAGAIN;
2344        }
2345
2346        if (frame->status != FRAME_READY) {
2347                mutex_unlock(&cam->v4l2_lock);
2348                wait_event_interruptible(cam->wq_stream,
2349                               !video_is_registered(&cam->vdev) ||
2350                               (frame = cam->curbuff)->status == FRAME_READY);
2351                mutex_lock(&cam->v4l2_lock);
2352                if (signal_pending(current))
2353                        return -ERESTARTSYS;
2354                if (!video_is_registered(&cam->vdev))
2355                        return 0;
2356        }
2357
2358        /* copy data to user space */
2359        if (frame->length > count)
2360                return -EFAULT;
2361        if (copy_to_user(buf, frame->data, frame->length))
2362                return -EFAULT;
2363
2364        count = frame->length;
2365
2366        frame->status = FRAME_EMPTY;
2367
2368        return count;
2369}
2370
2371/******************************************************************************
2372 *
2373 *  cpia2_poll
2374 *
2375 *****************************************************************************/
2376__poll_t cpia2_poll(struct camera_data *cam, struct file *filp,
2377                        poll_table *wait)
2378{
2379        __poll_t status = v4l2_ctrl_poll(filp, wait);
2380
2381        if ((poll_requested_events(wait) & (EPOLLIN | EPOLLRDNORM)) &&
2382                        !cam->streaming) {
2383                /* Start streaming */
2384                cpia2_usb_stream_start(cam,
2385                                       cam->params.camera_state.stream_mode);
2386        }
2387
2388        poll_wait(filp, &cam->wq_stream, wait);
2389
2390        if (cam->curbuff->status == FRAME_READY)
2391                status |= EPOLLIN | EPOLLRDNORM;
2392
2393        return status;
2394}
2395
2396/******************************************************************************
2397 *
2398 *  cpia2_remap_buffer
2399 *
2400 *****************************************************************************/
2401int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma)
2402{
2403        const char *adr = (const char *)vma->vm_start;
2404        unsigned long size = vma->vm_end-vma->vm_start;
2405        unsigned long start_offset = vma->vm_pgoff << PAGE_SHIFT;
2406        unsigned long start = (unsigned long) adr;
2407        unsigned long page, pos;
2408
2409        DBG("mmap offset:%ld size:%ld\n", start_offset, size);
2410
2411        if (!video_is_registered(&cam->vdev))
2412                return -ENODEV;
2413
2414        if (size > cam->frame_size*cam->num_frames  ||
2415            (start_offset % cam->frame_size) != 0 ||
2416            (start_offset+size > cam->frame_size*cam->num_frames))
2417                return -EINVAL;
2418
2419        pos = ((unsigned long) (cam->frame_buffer)) + start_offset;
2420        while (size > 0) {
2421                page = kvirt_to_pa(pos);
2422                if (remap_pfn_range(vma, start, page >> PAGE_SHIFT, PAGE_SIZE, PAGE_SHARED))
2423                        return -EAGAIN;
2424                start += PAGE_SIZE;
2425                pos += PAGE_SIZE;
2426                if (size > PAGE_SIZE)
2427                        size -= PAGE_SIZE;
2428                else
2429                        size = 0;
2430        }
2431
2432        cam->mmapped = true;
2433        return 0;
2434}
2435