| 1 | /* |
| 2 | * Driver for CAM_CAL |
| 3 | * |
| 4 | * |
| 5 | */ |
| 6 | |
| 7 | #include <linux/i2c.h> |
| 8 | #include <linux/platform_device.h> |
| 9 | #include <linux/delay.h> |
| 10 | #include <linux/cdev.h> |
| 11 | #include <linux/uaccess.h> |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/fs.h> |
| 14 | #include "kd_camera_hw.h" |
| 15 | #include "cam_cal.h" |
| 16 | #include "cam_cal_define.h" |
| 17 | |
| 18 | #include "dummy_cam_cal.h" |
| 19 | #include <asm/system.h> // for SMP |
| 20 | |
| 21 | //#define CAM_CALGETDLT_DEBUG //test |
| 22 | //#define CAM_CAL_DEBUG //test |
| 23 | #ifdef CAM_CAL_DEBUG |
| 24 | #define CAM_CALDB printk |
| 25 | #else |
| 26 | #define CAM_CALDB(x,...) |
| 27 | #endif |
| 28 | |
| 29 | |
| 30 | static DEFINE_SPINLOCK(g_CAM_CALLock); // for SMP |
| 31 | |
| 32 | #define CAM_CAL_I2C_BUSNUM 1 |
| 33 | static struct i2c_board_info __initdata kd_cam_cal_dev={ I2C_BOARD_INFO("dummy_cam_cal", 0xAB>>1)}; //make dummy_eeprom co-exist |
| 34 | |
| 35 | /******************************************************************************* |
| 36 | * |
| 37 | ********************************************************************************/ |
| 38 | #define CAM_CAL_ICS_REVISION 1 //seanlin111208 |
| 39 | /******************************************************************************* |
| 40 | * |
| 41 | ********************************************************************************/ |
| 42 | #define CAM_CAL_DRVNAME "dummy_cam_cal" |
| 43 | #define CAM_CAL_I2C_GROUP_ID 0 |
| 44 | /******************************************************************************* |
| 45 | * |
| 46 | ********************************************************************************/ |
| 47 | /* fix warning MSG |
| 48 | static unsigned short g_pu2Normal_i2c[] = {S24CS64A_DEVICE_ID , I2C_CLIENT_END}; |
| 49 | static unsigned short g_u2Ignore = I2C_CLIENT_END; |
| 50 | static struct i2c_client_address_data g_stCAM_CAL_Addr_data = { |
| 51 | .normal_i2c = g_pu2Normal_i2c, |
| 52 | .probe = &g_u2Ignore, |
| 53 | .ignore = &g_u2Ignore |
| 54 | }; */ |
| 55 | static struct i2c_client * g_pstI2Cclient = NULL; |
| 56 | |
| 57 | //81 is used for V4L driver |
| 58 | static dev_t g_CAM_CALdevno = MKDEV(CAM_CAL_DEV_MAJOR_NUMBER,0); |
| 59 | static struct cdev * g_pCAM_CAL_CharDrv = NULL; |
| 60 | //static spinlock_t g_CAM_CALLock; |
| 61 | static struct class *CAM_CAL_class = NULL; |
| 62 | static atomic_t g_CAM_CALatomic; |
| 63 | /******************************************************************************* |
| 64 | * |
| 65 | ********************************************************************************/ |
| 66 | // maximun read length is limited at "I2C_FIFO_SIZE" in I2c-mt65xx.c which is 8 bytes |
| 67 | int iWriteCAM_CAL(u16 a_u2Addr , u32 a_u4Bytes, u8 * puDataInBytes) |
| 68 | { |
| 69 | int i4RetValue = 0; |
| 70 | u32 u4Index = 0; |
| 71 | char puSendCmd[8] = {(char)(a_u2Addr >> 8) , (char)(a_u2Addr & 0xFF) , |
| 72 | 0, 0, 0, 0, 0, 0}; |
| 73 | if(a_u4Bytes + 2 > 8) |
| 74 | { |
| 75 | CAM_CALDB("[CAM_CAL] exceed I2c-mt65xx.c 8 bytes limitation (include address 2 Byte)\n"); |
| 76 | return -1; |
| 77 | } |
| 78 | |
| 79 | for(u4Index = 0 ; u4Index < a_u4Bytes ; u4Index += 1 ) |
| 80 | { |
| 81 | puSendCmd[(u4Index + 2)] = puDataInBytes[u4Index]; |
| 82 | } |
| 83 | |
| 84 | i4RetValue = i2c_master_send(g_pstI2Cclient, puSendCmd, (a_u4Bytes + 2)); |
| 85 | if (i4RetValue != (a_u4Bytes + 2)) |
| 86 | { |
| 87 | CAM_CALDB("[CAM_CAL] I2C write failed!! \n"); |
| 88 | return -1; |
| 89 | } |
| 90 | mdelay(10); //for tWR singnal --> write data form buffer to memory. |
| 91 | |
| 92 | //CAM_CALDB("[CAM_CAL] iWriteCAM_CAL done!! \n"); |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | |
| 97 | // maximun read length is limited at "I2C_FIFO_SIZE" in I2c-mt65xx.c which is 8 bytes |
| 98 | int iReadCAM_CAL(u16 a_u2Addr, u32 ui4_length, u8 * a_puBuff) |
| 99 | { |
| 100 | int i4RetValue = 0; |
| 101 | char puReadCmd[2] = {(char)(a_u2Addr >> 8) , (char)(a_u2Addr & 0xFF)}; |
| 102 | |
| 103 | //CAM_CALDB("[CAM_CAL] iReadCAM_CAL!! \n"); |
| 104 | |
| 105 | if(ui4_length > 8) |
| 106 | { |
| 107 | CAM_CALDB("[CAM_CAL] exceed I2c-mt65xx.c 8 bytes limitation\n"); |
| 108 | return -1; |
| 109 | } |
| 110 | spin_lock(&g_CAM_CALLock); //for SMP |
| 111 | g_pstI2Cclient->addr = g_pstI2Cclient->addr & (I2C_MASK_FLAG | I2C_WR_FLAG); |
| 112 | spin_unlock(&g_CAM_CALLock); // for SMP |
| 113 | |
| 114 | //CAM_CALDB("[EERPOM] i2c_master_send \n"); |
| 115 | i4RetValue = i2c_master_send(g_pstI2Cclient, puReadCmd, 2); |
| 116 | if (i4RetValue != 2) |
| 117 | { |
| 118 | CAM_CALDB("[CAM_CAL] I2C send read address failed!! \n"); |
| 119 | return -1; |
| 120 | } |
| 121 | |
| 122 | //CAM_CALDB("[EERPOM] i2c_master_recv \n"); |
| 123 | i4RetValue = i2c_master_recv(g_pstI2Cclient, (char *)a_puBuff, ui4_length); |
| 124 | if (i4RetValue != ui4_length) |
| 125 | { |
| 126 | CAM_CALDB("[CAM_CAL] I2C read data failed!! \n"); |
| 127 | return -1; |
| 128 | } |
| 129 | spin_lock(&g_CAM_CALLock); //for SMP |
| 130 | g_pstI2Cclient->addr = g_pstI2Cclient->addr & I2C_MASK_FLAG; |
| 131 | spin_unlock(&g_CAM_CALLock); // for SMP |
| 132 | |
| 133 | //CAM_CALDB("[CAM_CAL] iReadCAM_CAL done!! \n"); |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | |
| 138 | static int iWriteData(unsigned int ui4_offset, unsigned int ui4_length, unsigned char * pinputdata) |
| 139 | { |
| 140 | int i4RetValue = 0; |
| 141 | int i4ResidueDataLength; |
| 142 | u32 u4IncOffset = 0; |
| 143 | u32 u4CurrentOffset; |
| 144 | u8 * pBuff; |
| 145 | |
| 146 | CAM_CALDB("[CAM_CAL] iWriteData\n" ); |
| 147 | |
| 148 | |
| 149 | if (ui4_offset + ui4_length >= 0x2000) |
| 150 | { |
| 151 | CAM_CALDB("[CAM_CAL] Write Error!! S-24CS64A not supprt address >= 0x2000!! \n" ); |
| 152 | return -1; |
| 153 | } |
| 154 | |
| 155 | i4ResidueDataLength = (int)ui4_length; |
| 156 | u4CurrentOffset = ui4_offset; |
| 157 | pBuff = pinputdata; |
| 158 | CAM_CALDB("[CAM_CAL] iWriteData u4CurrentOffset is %d \n",u4CurrentOffset); |
| 159 | do |
| 160 | { |
| 161 | if(i4ResidueDataLength >= 6) |
| 162 | { |
| 163 | i4RetValue = iWriteCAM_CAL((u16)u4CurrentOffset, 6, pBuff); |
| 164 | if (i4RetValue != 0) |
| 165 | { |
| 166 | CAM_CALDB("[CAM_CAL] I2C iWriteData failed!! \n"); |
| 167 | return -1; |
| 168 | } |
| 169 | u4IncOffset += 6; |
| 170 | i4ResidueDataLength -= 6; |
| 171 | u4CurrentOffset = ui4_offset + u4IncOffset; |
| 172 | pBuff = pinputdata + u4IncOffset; |
| 173 | } |
| 174 | else |
| 175 | { |
| 176 | i4RetValue = iWriteCAM_CAL((u16)u4CurrentOffset, i4ResidueDataLength, pBuff); |
| 177 | if (i4RetValue != 0) |
| 178 | { |
| 179 | CAM_CALDB("[CAM_CAL] I2C iWriteData failed!! \n"); |
| 180 | return -1; |
| 181 | } |
| 182 | u4IncOffset += 6; |
| 183 | i4ResidueDataLength -= 6; |
| 184 | u4CurrentOffset = ui4_offset + u4IncOffset; |
| 185 | pBuff = pinputdata + u4IncOffset; |
| 186 | //break; |
| 187 | } |
| 188 | }while (i4ResidueDataLength > 0); |
| 189 | CAM_CALDB("[CAM_CAL] iWriteData done\n" ); |
| 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | //int iReadData(stCAM_CAL_INFO_STRUCT * st_pOutputBuffer) |
| 195 | static int iReadData(unsigned int ui4_offset, unsigned int ui4_length, unsigned char * pinputdata) |
| 196 | { |
| 197 | int i4RetValue = 0; |
| 198 | int i4ResidueDataLength; |
| 199 | u32 u4IncOffset = 0; |
| 200 | u32 u4CurrentOffset; |
| 201 | u8 * pBuff; |
| 202 | CAM_CALDB("[CAM_CAL] iReadData \n" ); |
| 203 | |
| 204 | if (ui4_offset + ui4_length >= 0x2000) |
| 205 | { |
| 206 | CAM_CALDB("[CAM_CAL] Read Error!! S-24CS64A not supprt address >= 0x2000!! \n" ); |
| 207 | return -1; |
| 208 | } |
| 209 | |
| 210 | i4ResidueDataLength = (int)ui4_length; |
| 211 | u4CurrentOffset = ui4_offset; |
| 212 | pBuff = pinputdata; |
| 213 | do |
| 214 | { |
| 215 | if(i4ResidueDataLength >= 8) |
| 216 | { |
| 217 | i4RetValue = iReadCAM_CAL((u16)u4CurrentOffset, 8, pBuff); |
| 218 | if (i4RetValue != 0) |
| 219 | { |
| 220 | CAM_CALDB("[CAM_CAL] I2C iReadData failed!! \n"); |
| 221 | return -1; |
| 222 | } |
| 223 | u4IncOffset += 8; |
| 224 | i4ResidueDataLength -= 8; |
| 225 | u4CurrentOffset = ui4_offset + u4IncOffset; |
| 226 | pBuff = pinputdata + u4IncOffset; |
| 227 | } |
| 228 | else |
| 229 | { |
| 230 | i4RetValue = iReadCAM_CAL((u16)u4CurrentOffset, i4ResidueDataLength, pBuff); |
| 231 | if (i4RetValue != 0) |
| 232 | { |
| 233 | CAM_CALDB("[CAM_CAL] I2C iReadData failed!! \n"); |
| 234 | return -1; |
| 235 | } |
| 236 | u4IncOffset += 8; |
| 237 | i4ResidueDataLength -= 8; |
| 238 | u4CurrentOffset = ui4_offset + u4IncOffset; |
| 239 | pBuff = pinputdata + u4IncOffset; |
| 240 | //break; |
| 241 | } |
| 242 | }while (i4ResidueDataLength > 0); |
| 243 | //fix warning MSG CAM_CALDB("[CAM_CAL] iReadData finial address is %d length is %d buffer address is 0x%x\n",u4CurrentOffset, i4ResidueDataLength, pBuff); |
| 244 | CAM_CALDB("[CAM_CAL] iReadData done\n" ); |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | |
| 249 | /******************************************************************************* |
| 250 | * |
| 251 | ********************************************************************************/ |
| 252 | #define NEW_UNLOCK_IOCTL |
| 253 | #ifndef NEW_UNLOCK_IOCTL |
| 254 | static int CAM_CAL_Ioctl(struct inode * a_pstInode, |
| 255 | struct file * a_pstFile, |
| 256 | unsigned int a_u4Command, |
| 257 | unsigned long a_u4Param) |
| 258 | #else |
| 259 | static long CAM_CAL_Ioctl( |
| 260 | struct file *file, |
| 261 | unsigned int a_u4Command, |
| 262 | unsigned long a_u4Param |
| 263 | ) |
| 264 | #endif |
| 265 | { |
| 266 | int i4RetValue = 0; |
| 267 | u8 * pBuff = NULL; |
| 268 | u8 * pWorkingBuff = NULL; |
| 269 | stCAM_CAL_INFO_STRUCT *ptempbuf; |
| 270 | |
| 271 | #ifdef CAM_CALGETDLT_DEBUG |
| 272 | struct timeval ktv1, ktv2; |
| 273 | unsigned long TimeIntervalUS; |
| 274 | #endif |
| 275 | |
| 276 | if(_IOC_NONE == _IOC_DIR(a_u4Command)) |
| 277 | { |
| 278 | } |
| 279 | else |
| 280 | { |
| 281 | pBuff = (u8 *)kmalloc(sizeof(stCAM_CAL_INFO_STRUCT),GFP_KERNEL); |
| 282 | |
| 283 | if(NULL == pBuff) |
| 284 | { |
| 285 | CAM_CALDB("[CAM_CAL] ioctl allocate mem failed\n"); |
| 286 | return -ENOMEM; |
| 287 | } |
| 288 | |
| 289 | if(_IOC_WRITE & _IOC_DIR(a_u4Command)) |
| 290 | { |
| 291 | if(copy_from_user((u8 *) pBuff , (u8 *) a_u4Param, sizeof(stCAM_CAL_INFO_STRUCT))) |
| 292 | { //get input structure address |
| 293 | kfree(pBuff); |
| 294 | CAM_CALDB("[CAM_CAL] ioctl copy from user failed\n"); |
| 295 | return -EFAULT; |
| 296 | } |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | ptempbuf = (stCAM_CAL_INFO_STRUCT *)pBuff; |
| 301 | pWorkingBuff = (u8*)kmalloc(ptempbuf->u4Length,GFP_KERNEL); |
| 302 | if(NULL == pWorkingBuff) |
| 303 | { |
| 304 | kfree(pBuff); |
| 305 | CAM_CALDB("[CAM_CAL] ioctl allocate mem failed\n"); |
| 306 | return -ENOMEM; |
| 307 | } |
| 308 | //fix warning MSG CAM_CALDB("[CAM_CAL] init Working buffer address 0x%x command is 0x%08x\n", pWorkingBuff, a_u4Command); |
| 309 | |
| 310 | |
| 311 | if(copy_from_user((u8*)pWorkingBuff , (u8*)ptempbuf->pu1Params, ptempbuf->u4Length)) |
| 312 | { |
| 313 | kfree(pBuff); |
| 314 | kfree(pWorkingBuff); |
| 315 | CAM_CALDB("[CAM_CAL] ioctl copy from user failed\n"); |
| 316 | return -EFAULT; |
| 317 | } |
| 318 | |
| 319 | switch(a_u4Command) |
| 320 | { |
| 321 | case CAM_CALIOC_S_WRITE: |
| 322 | CAM_CALDB("[CAM_CAL] Write CMD \n"); |
| 323 | #ifdef CAM_CALGETDLT_DEBUG |
| 324 | do_gettimeofday(&ktv1); |
| 325 | #endif |
| 326 | i4RetValue = iWriteData((u16)ptempbuf->u4Offset, ptempbuf->u4Length, pWorkingBuff); |
| 327 | #ifdef CAM_CALGETDLT_DEBUG |
| 328 | do_gettimeofday(&ktv2); |
| 329 | if(ktv2.tv_sec > ktv1.tv_sec) |
| 330 | { |
| 331 | TimeIntervalUS = ktv1.tv_usec + 1000000 - ktv2.tv_usec; |
| 332 | } |
| 333 | else |
| 334 | { |
| 335 | TimeIntervalUS = ktv2.tv_usec - ktv1.tv_usec; |
| 336 | } |
| 337 | printk("Write data %d bytes take %lu us\n",ptempbuf->u4Length, TimeIntervalUS); |
| 338 | #endif |
| 339 | break; |
| 340 | case CAM_CALIOC_G_READ: |
| 341 | CAM_CALDB("[CAM_CAL] Read CMD \n"); |
| 342 | #ifdef CAM_CALGETDLT_DEBUG |
| 343 | do_gettimeofday(&ktv1); |
| 344 | #endif |
| 345 | CAM_CALDB("[CAM_CAL] offset %d \n", ptempbuf->u4Offset); |
| 346 | CAM_CALDB("[CAM_CAL] length %d \n", ptempbuf->u4Length); |
| 347 | //fix warning MSG CAM_CALDB("[CAM_CAL] Before read Working buffer address 0x%x \n", pWorkingBuff); |
| 348 | |
| 349 | i4RetValue = iReadData((u16)ptempbuf->u4Offset, ptempbuf->u4Length, pWorkingBuff); |
| 350 | //fix warning MSG CAM_CALDB("[CAM_CAL] After read Working buffer address 0x%x \n", pWorkingBuff); |
| 351 | |
| 352 | |
| 353 | #ifdef CAM_CALGETDLT_DEBUG |
| 354 | do_gettimeofday(&ktv2); |
| 355 | if(ktv2.tv_sec > ktv1.tv_sec) |
| 356 | { |
| 357 | TimeIntervalUS = ktv1.tv_usec + 1000000 - ktv2.tv_usec; |
| 358 | } |
| 359 | else |
| 360 | { |
| 361 | TimeIntervalUS = ktv2.tv_usec - ktv1.tv_usec; |
| 362 | } |
| 363 | printk("Read data %d bytes take %lu us\n",ptempbuf->u4Length, TimeIntervalUS); |
| 364 | #endif |
| 365 | |
| 366 | break; |
| 367 | default : |
| 368 | CAM_CALDB("[CAM_CAL] No CMD \n"); |
| 369 | i4RetValue = -EPERM; |
| 370 | break; |
| 371 | } |
| 372 | |
| 373 | if(_IOC_READ & _IOC_DIR(a_u4Command)) |
| 374 | { |
| 375 | //copy data to user space buffer, keep other input paremeter unchange. |
| 376 | CAM_CALDB("[CAM_CAL] to user length %d \n", ptempbuf->u4Length); |
| 377 | //fix warning MSG CAM_CALDB("[CAM_CAL] to user Working buffer address 0x%x \n", pWorkingBuff); |
| 378 | if(copy_to_user((u8 __user *) ptempbuf->pu1Params , (u8 *)pWorkingBuff , ptempbuf->u4Length)) |
| 379 | { |
| 380 | kfree(pBuff); |
| 381 | kfree(pWorkingBuff); |
| 382 | CAM_CALDB("[CAM_CAL] ioctl copy to user failed\n"); |
| 383 | return -EFAULT; |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | kfree(pBuff); |
| 388 | kfree(pWorkingBuff); |
| 389 | return i4RetValue; |
| 390 | } |
| 391 | |
| 392 | |
| 393 | static u32 g_u4Opened = 0; |
| 394 | //#define |
| 395 | //Main jobs: |
| 396 | // 1.check for device-specified errors, device not ready. |
| 397 | // 2.Initialize the device if it is opened for the first time. |
| 398 | static int CAM_CAL_Open(struct inode * a_pstInode, struct file * a_pstFile) |
| 399 | { |
| 400 | CAM_CALDB("[S24CAM_CAL] CAM_CAL_Open\n"); |
| 401 | spin_lock(&g_CAM_CALLock); |
| 402 | if(g_u4Opened) |
| 403 | { |
| 404 | spin_unlock(&g_CAM_CALLock); |
| 405 | return -EBUSY; |
| 406 | } |
| 407 | else |
| 408 | { |
| 409 | g_u4Opened = 1; |
| 410 | atomic_set(&g_CAM_CALatomic,0); |
| 411 | } |
| 412 | spin_unlock(&g_CAM_CALLock); |
| 413 | |
| 414 | //#if defined(MT6572) |
| 415 | // do nothing |
| 416 | //#else |
| 417 | //if(TRUE != hwPowerOn(MT65XX_POWER_LDO_VCAMA, VOL_2800, "S24CS64A")) |
| 418 | //{ |
| 419 | // CAM_CALDB("[CAM_CAL] Fail to enable analog gain\n"); |
| 420 | // return -EIO; |
| 421 | //} |
| 422 | //#endif |
| 423 | |
| 424 | return 0; |
| 425 | } |
| 426 | |
| 427 | //Main jobs: |
| 428 | // 1.Deallocate anything that "open" allocated in private_data. |
| 429 | // 2.Shut down the device on last close. |
| 430 | // 3.Only called once on last time. |
| 431 | // Q1 : Try release multiple times. |
| 432 | static int CAM_CAL_Release(struct inode * a_pstInode, struct file * a_pstFile) |
| 433 | { |
| 434 | spin_lock(&g_CAM_CALLock); |
| 435 | |
| 436 | g_u4Opened = 0; |
| 437 | |
| 438 | atomic_set(&g_CAM_CALatomic,0); |
| 439 | |
| 440 | spin_unlock(&g_CAM_CALLock); |
| 441 | |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | static const struct file_operations g_stCAM_CAL_fops = |
| 446 | { |
| 447 | .owner = THIS_MODULE, |
| 448 | .open = CAM_CAL_Open, |
| 449 | .release = CAM_CAL_Release, |
| 450 | //.ioctl = CAM_CAL_Ioctl |
| 451 | .unlocked_ioctl = CAM_CAL_Ioctl |
| 452 | }; |
| 453 | |
| 454 | #define CAM_CAL_DYNAMIC_ALLOCATE_DEVNO 1 |
| 455 | inline static int RegisterCAM_CALCharDrv(void) |
| 456 | { |
| 457 | struct device* CAM_CAL_device = NULL; |
| 458 | |
| 459 | #if CAM_CAL_DYNAMIC_ALLOCATE_DEVNO |
| 460 | if( alloc_chrdev_region(&g_CAM_CALdevno, 0, 1,CAM_CAL_DRVNAME) ) |
| 461 | { |
| 462 | CAM_CALDB("[CAM_CAL] Allocate device no failed\n"); |
| 463 | |
| 464 | return -EAGAIN; |
| 465 | } |
| 466 | #else |
| 467 | if( register_chrdev_region( g_CAM_CALdevno , 1 , CAM_CAL_DRVNAME) ) |
| 468 | { |
| 469 | CAM_CALDB("[CAM_CAL] Register device no failed\n"); |
| 470 | |
| 471 | return -EAGAIN; |
| 472 | } |
| 473 | #endif |
| 474 | |
| 475 | //Allocate driver |
| 476 | g_pCAM_CAL_CharDrv = cdev_alloc(); |
| 477 | |
| 478 | if(NULL == g_pCAM_CAL_CharDrv) |
| 479 | { |
| 480 | unregister_chrdev_region(g_CAM_CALdevno, 1); |
| 481 | |
| 482 | CAM_CALDB("[CAM_CAL] Allocate mem for kobject failed\n"); |
| 483 | |
| 484 | return -ENOMEM; |
| 485 | } |
| 486 | |
| 487 | //Attatch file operation. |
| 488 | cdev_init(g_pCAM_CAL_CharDrv, &g_stCAM_CAL_fops); |
| 489 | |
| 490 | g_pCAM_CAL_CharDrv->owner = THIS_MODULE; |
| 491 | |
| 492 | //Add to system |
| 493 | if(cdev_add(g_pCAM_CAL_CharDrv, g_CAM_CALdevno, 1)) |
| 494 | { |
| 495 | CAM_CALDB("[CAM_CAL] Attatch file operation failed\n"); |
| 496 | |
| 497 | unregister_chrdev_region(g_CAM_CALdevno, 1); |
| 498 | |
| 499 | return -EAGAIN; |
| 500 | } |
| 501 | |
| 502 | CAM_CAL_class = class_create(THIS_MODULE, "CAM_CALdrv"); |
| 503 | if (IS_ERR(CAM_CAL_class)) { |
| 504 | int ret = PTR_ERR(CAM_CAL_class); |
| 505 | CAM_CALDB("Unable to create class, err = %d\n", ret); |
| 506 | return ret; |
| 507 | } |
| 508 | CAM_CAL_device = device_create(CAM_CAL_class, NULL, g_CAM_CALdevno, NULL, CAM_CAL_DRVNAME); |
| 509 | |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | inline static void UnregisterCAM_CALCharDrv(void) |
| 514 | { |
| 515 | //Release char driver |
| 516 | cdev_del(g_pCAM_CAL_CharDrv); |
| 517 | |
| 518 | unregister_chrdev_region(g_CAM_CALdevno, 1); |
| 519 | |
| 520 | device_destroy(CAM_CAL_class, g_CAM_CALdevno); |
| 521 | class_destroy(CAM_CAL_class); |
| 522 | } |
| 523 | |
| 524 | |
| 525 | ////////////////////////////////////////////////////////////////////// |
| 526 | #ifndef CAM_CAL_ICS_REVISION |
| 527 | static int CAM_CAL_i2c_detect(struct i2c_client *client, int kind, struct i2c_board_info *info); |
| 528 | #elif 0 |
| 529 | static int CAM_CAL_i2c_detect(struct i2c_client *client, struct i2c_board_info *info); |
| 530 | #else |
| 531 | #endif |
| 532 | static int CAM_CAL_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id); |
| 533 | static int CAM_CAL_i2c_remove(struct i2c_client *); |
| 534 | |
| 535 | static const struct i2c_device_id CAM_CAL_i2c_id[] = {{CAM_CAL_DRVNAME,0},{}}; |
| 536 | #if 0 //test110314 Please use the same I2C Group ID as Sensor |
| 537 | static unsigned short force[] = {CAM_CAL_I2C_GROUP_ID, S24CS64A_DEVICE_ID, I2C_CLIENT_END, I2C_CLIENT_END}; |
| 538 | #else |
| 539 | //static unsigned short force[] = {CAM_CAL_I2C_GROUP_ID, S24CS64A_DEVICE_ID, I2C_CLIENT_END, I2C_CLIENT_END}; |
| 540 | #endif |
| 541 | //static const unsigned short * const forces[] = { force, NULL }; |
| 542 | //static struct i2c_client_address_data addr_data = { .forces = forces,}; |
| 543 | |
| 544 | |
| 545 | static struct i2c_driver CAM_CAL_i2c_driver = { |
| 546 | .probe = CAM_CAL_i2c_probe, |
| 547 | .remove = CAM_CAL_i2c_remove, |
| 548 | // .detect = CAM_CAL_i2c_detect, |
| 549 | .driver.name = CAM_CAL_DRVNAME, |
| 550 | .id_table = CAM_CAL_i2c_id, |
| 551 | }; |
| 552 | |
| 553 | #ifndef CAM_CAL_ICS_REVISION |
| 554 | static int CAM_CAL_i2c_detect(struct i2c_client *client, int kind, struct i2c_board_info *info) { |
| 555 | strcpy(info->type, CAM_CAL_DRVNAME); |
| 556 | return 0; |
| 557 | } |
| 558 | #endif |
| 559 | static int CAM_CAL_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { |
| 560 | int i4RetValue = 0; |
| 561 | CAM_CALDB("[CAM_CAL] Attach I2C \n"); |
| 562 | // spin_lock_init(&g_CAM_CALLock); |
| 563 | |
| 564 | //get sensor i2c client |
| 565 | spin_lock(&g_CAM_CALLock); //for SMP |
| 566 | g_pstI2Cclient = client; |
| 567 | g_pstI2Cclient->addr = S24CS64A_DEVICE_ID>>1; |
| 568 | spin_unlock(&g_CAM_CALLock); // for SMP |
| 569 | |
| 570 | CAM_CALDB("[CAM_CAL] g_pstI2Cclient->addr = 0x%8x \n",g_pstI2Cclient->addr); |
| 571 | //Register char driver |
| 572 | i4RetValue = RegisterCAM_CALCharDrv(); |
| 573 | |
| 574 | if(i4RetValue){ |
| 575 | CAM_CALDB("[CAM_CAL] register char device failed!\n"); |
| 576 | return i4RetValue; |
| 577 | } |
| 578 | |
| 579 | |
| 580 | CAM_CALDB("[CAM_CAL] Attached!! \n"); |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | static int CAM_CAL_i2c_remove(struct i2c_client *client) |
| 585 | { |
| 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | static int CAM_CAL_probe(struct platform_device *pdev) |
| 590 | { |
| 591 | return i2c_add_driver(&CAM_CAL_i2c_driver); |
| 592 | } |
| 593 | |
| 594 | static int CAM_CAL_remove(struct platform_device *pdev) |
| 595 | { |
| 596 | i2c_del_driver(&CAM_CAL_i2c_driver); |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | // platform structure |
| 601 | static struct platform_driver g_stCAM_CAL_Driver = { |
| 602 | .probe = CAM_CAL_probe, |
| 603 | .remove = CAM_CAL_remove, |
| 604 | .driver = { |
| 605 | .name = CAM_CAL_DRVNAME, |
| 606 | .owner = THIS_MODULE, |
| 607 | } |
| 608 | }; |
| 609 | |
| 610 | |
| 611 | static struct platform_device g_stCAM_CAL_Device = { |
| 612 | .name = CAM_CAL_DRVNAME, |
| 613 | .id = 0, |
| 614 | .dev = { |
| 615 | } |
| 616 | }; |
| 617 | |
| 618 | static int __init CAM_CAL_i2C_init(void) |
| 619 | { |
| 620 | i2c_register_board_info(CAM_CAL_I2C_BUSNUM, &kd_cam_cal_dev, 1); |
| 621 | if(platform_driver_register(&g_stCAM_CAL_Driver)){ |
| 622 | CAM_CALDB("failed to register CAM_CAL driver\n"); |
| 623 | return -ENODEV; |
| 624 | } |
| 625 | |
| 626 | if (platform_device_register(&g_stCAM_CAL_Device)) |
| 627 | { |
| 628 | CAM_CALDB("failed to register CAM_CAL driver\n"); |
| 629 | return -ENODEV; |
| 630 | } |
| 631 | |
| 632 | return 0; |
| 633 | } |
| 634 | |
| 635 | static void __exit CAM_CAL_i2C_exit(void) |
| 636 | { |
| 637 | platform_driver_unregister(&g_stCAM_CAL_Driver); |
| 638 | } |
| 639 | |
| 640 | module_init(CAM_CAL_i2C_init); |
| 641 | module_exit(CAM_CAL_i2C_exit); |
| 642 | |
| 643 | MODULE_DESCRIPTION("CAM_CAL driver"); |
| 644 | MODULE_AUTHOR("Sean Lin <Sean.Lin@Mediatek.com>"); |
| 645 | MODULE_LICENSE("GPL"); |
| 646 | |
| 647 | |