Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008-2009 Texas Instruments Inc |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | * |
| 18 | * Driver name : VPFE Capture driver |
| 19 | * VPFE Capture driver allows applications to capture and stream video |
| 20 | * frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as |
| 21 | * TVP5146 or Raw Bayer RGB image data from an image sensor |
| 22 | * such as Microns' MT9T001, MT9T031 etc. |
| 23 | * |
| 24 | * These SoCs have, in common, a Video Processing Subsystem (VPSS) that |
| 25 | * consists of a Video Processing Front End (VPFE) for capturing |
| 26 | * video/raw image data and Video Processing Back End (VPBE) for displaying |
| 27 | * YUV data through an in-built analog encoder or Digital LCD port. This |
| 28 | * driver is for capture through VPFE. A typical EVM using these SoCs have |
| 29 | * following high level configuration. |
| 30 | * |
| 31 | * |
| 32 | * decoder(TVP5146/ YUV/ |
| 33 | * MT9T001) --> Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF) |
| 34 | * data input | | |
| 35 | * V | |
| 36 | * SDRAM | |
| 37 | * V |
| 38 | * Image Processor |
| 39 | * | |
| 40 | * V |
| 41 | * SDRAM |
| 42 | * The data flow happens from a decoder connected to the VPFE over a |
| 43 | * YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface |
| 44 | * and to the input of VPFE through an optional MUX (if more inputs are |
| 45 | * to be interfaced on the EVM). The input data is first passed through |
| 46 | * CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC |
| 47 | * does very little or no processing on YUV data and does pre-process Raw |
| 48 | * Bayer RGB data through modules such as Defect Pixel Correction (DFC) |
| 49 | * Color Space Conversion (CSC), data gain/offset etc. After this, data |
| 50 | * can be written to SDRAM or can be connected to the image processing |
| 51 | * block such as IPIPE (on DM355 only). |
| 52 | * |
| 53 | * Features supported |
| 54 | * - MMAP IO |
| 55 | * - Capture using TVP5146 over BT.656 |
| 56 | * - support for interfacing decoders using sub device model |
| 57 | * - Work with DM355 or DM6446 CCDC to do Raw Bayer RGB/YUV |
| 58 | * data capture to SDRAM. |
| 59 | * TODO list |
| 60 | * - Support multiple REQBUF after open |
| 61 | * - Support for de-allocating buffers through REQBUF |
| 62 | * - Support for Raw Bayer RGB capture |
| 63 | * - Support for chaining Image Processor |
| 64 | * - Support for static allocation of buffers |
| 65 | * - Support for USERPTR IO |
| 66 | * - Support for STREAMON before QBUF |
| 67 | * - Support for control ioctls |
| 68 | */ |
| 69 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame^] | 70 | #include <linux/slab.h> |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 71 | #include <linux/init.h> |
| 72 | #include <linux/platform_device.h> |
| 73 | #include <linux/interrupt.h> |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 74 | #include <media/v4l2-common.h> |
| 75 | #include <linux/io.h> |
| 76 | #include <media/davinci/vpfe_capture.h> |
| 77 | #include "ccdc_hw_device.h" |
| 78 | |
| 79 | static int debug; |
| 80 | static u32 numbuffers = 3; |
| 81 | static u32 bufsize = (720 * 576 * 2); |
| 82 | |
| 83 | module_param(numbuffers, uint, S_IRUGO); |
| 84 | module_param(bufsize, uint, S_IRUGO); |
| 85 | module_param(debug, int, 0644); |
| 86 | |
| 87 | MODULE_PARM_DESC(numbuffers, "buffer count (default:3)"); |
| 88 | MODULE_PARM_DESC(bufsize, "buffer size in bytes (default:720 x 576 x 2)"); |
| 89 | MODULE_PARM_DESC(debug, "Debug level 0-1"); |
| 90 | |
| 91 | MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver"); |
| 92 | MODULE_LICENSE("GPL"); |
| 93 | MODULE_AUTHOR("Texas Instruments"); |
| 94 | |
| 95 | /* standard information */ |
| 96 | struct vpfe_standard { |
| 97 | v4l2_std_id std_id; |
| 98 | unsigned int width; |
| 99 | unsigned int height; |
| 100 | struct v4l2_fract pixelaspect; |
| 101 | /* 0 - progressive, 1 - interlaced */ |
| 102 | int frame_format; |
| 103 | }; |
| 104 | |
| 105 | /* ccdc configuration */ |
| 106 | struct ccdc_config { |
| 107 | /* This make sure vpfe is probed and ready to go */ |
| 108 | int vpfe_probed; |
| 109 | /* name of ccdc device */ |
| 110 | char name[32]; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 111 | }; |
| 112 | |
| 113 | /* data structures */ |
| 114 | static struct vpfe_config_params config_params = { |
| 115 | .min_numbuffers = 3, |
| 116 | .numbuffers = 3, |
| 117 | .min_bufsize = 720 * 480 * 2, |
| 118 | .device_bufsize = 720 * 576 * 2, |
| 119 | }; |
| 120 | |
| 121 | /* ccdc device registered */ |
| 122 | static struct ccdc_hw_device *ccdc_dev; |
| 123 | /* lock for accessing ccdc information */ |
| 124 | static DEFINE_MUTEX(ccdc_lock); |
| 125 | /* ccdc configuration */ |
| 126 | static struct ccdc_config *ccdc_cfg; |
| 127 | |
| 128 | const struct vpfe_standard vpfe_standards[] = { |
| 129 | {V4L2_STD_525_60, 720, 480, {11, 10}, 1}, |
| 130 | {V4L2_STD_625_50, 720, 576, {54, 59}, 1}, |
| 131 | }; |
| 132 | |
| 133 | /* Used when raw Bayer image from ccdc is directly captured to SDRAM */ |
| 134 | static const struct vpfe_pixel_format vpfe_pix_fmts[] = { |
| 135 | { |
| 136 | .fmtdesc = { |
| 137 | .index = 0, |
| 138 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 139 | .description = "Bayer GrRBGb 8bit A-Law compr.", |
| 140 | .pixelformat = V4L2_PIX_FMT_SBGGR8, |
| 141 | }, |
| 142 | .bpp = 1, |
| 143 | }, |
| 144 | { |
| 145 | .fmtdesc = { |
| 146 | .index = 1, |
| 147 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 148 | .description = "Bayer GrRBGb - 16bit", |
| 149 | .pixelformat = V4L2_PIX_FMT_SBGGR16, |
| 150 | }, |
| 151 | .bpp = 2, |
| 152 | }, |
| 153 | { |
| 154 | .fmtdesc = { |
| 155 | .index = 2, |
| 156 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 157 | .description = "Bayer GrRBGb 8bit DPCM compr.", |
| 158 | .pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8, |
| 159 | }, |
| 160 | .bpp = 1, |
| 161 | }, |
| 162 | { |
| 163 | .fmtdesc = { |
| 164 | .index = 3, |
| 165 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 166 | .description = "YCbCr 4:2:2 Interleaved UYVY", |
| 167 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 168 | }, |
| 169 | .bpp = 2, |
| 170 | }, |
| 171 | { |
| 172 | .fmtdesc = { |
| 173 | .index = 4, |
| 174 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 175 | .description = "YCbCr 4:2:2 Interleaved YUYV", |
| 176 | .pixelformat = V4L2_PIX_FMT_YUYV, |
| 177 | }, |
| 178 | .bpp = 2, |
| 179 | }, |
| 180 | { |
| 181 | .fmtdesc = { |
| 182 | .index = 5, |
| 183 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 184 | .description = "Y/CbCr 4:2:0 - Semi planar", |
| 185 | .pixelformat = V4L2_PIX_FMT_NV12, |
| 186 | }, |
| 187 | .bpp = 1, |
| 188 | }, |
| 189 | }; |
| 190 | |
| 191 | /* |
| 192 | * vpfe_lookup_pix_format() |
| 193 | * lookup an entry in the vpfe pix format table based on pix_format |
| 194 | */ |
| 195 | static const struct vpfe_pixel_format *vpfe_lookup_pix_format(u32 pix_format) |
| 196 | { |
| 197 | int i; |
| 198 | |
| 199 | for (i = 0; i < ARRAY_SIZE(vpfe_pix_fmts); i++) { |
| 200 | if (pix_format == vpfe_pix_fmts[i].fmtdesc.pixelformat) |
| 201 | return &vpfe_pix_fmts[i]; |
| 202 | } |
| 203 | return NULL; |
| 204 | } |
| 205 | |
| 206 | /* |
| 207 | * vpfe_register_ccdc_device. CCDC module calls this to |
| 208 | * register with vpfe capture |
| 209 | */ |
| 210 | int vpfe_register_ccdc_device(struct ccdc_hw_device *dev) |
| 211 | { |
| 212 | int ret = 0; |
| 213 | printk(KERN_NOTICE "vpfe_register_ccdc_device: %s\n", dev->name); |
| 214 | |
| 215 | BUG_ON(!dev->hw_ops.open); |
| 216 | BUG_ON(!dev->hw_ops.enable); |
| 217 | BUG_ON(!dev->hw_ops.set_hw_if_params); |
| 218 | BUG_ON(!dev->hw_ops.configure); |
| 219 | BUG_ON(!dev->hw_ops.set_buftype); |
| 220 | BUG_ON(!dev->hw_ops.get_buftype); |
| 221 | BUG_ON(!dev->hw_ops.enum_pix); |
| 222 | BUG_ON(!dev->hw_ops.set_frame_format); |
| 223 | BUG_ON(!dev->hw_ops.get_frame_format); |
| 224 | BUG_ON(!dev->hw_ops.get_pixel_format); |
| 225 | BUG_ON(!dev->hw_ops.set_pixel_format); |
| 226 | BUG_ON(!dev->hw_ops.set_params); |
| 227 | BUG_ON(!dev->hw_ops.set_image_window); |
| 228 | BUG_ON(!dev->hw_ops.get_image_window); |
| 229 | BUG_ON(!dev->hw_ops.get_line_length); |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 230 | BUG_ON(!dev->hw_ops.getfid); |
| 231 | |
| 232 | mutex_lock(&ccdc_lock); |
| 233 | if (NULL == ccdc_cfg) { |
| 234 | /* |
| 235 | * TODO. Will this ever happen? if so, we need to fix it. |
| 236 | * Proabably we need to add the request to a linked list and |
| 237 | * walk through it during vpfe probe |
| 238 | */ |
| 239 | printk(KERN_ERR "vpfe capture not initialized\n"); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 240 | ret = -EFAULT; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 241 | goto unlock; |
| 242 | } |
| 243 | |
| 244 | if (strcmp(dev->name, ccdc_cfg->name)) { |
| 245 | /* ignore this ccdc */ |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 246 | ret = -EINVAL; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 247 | goto unlock; |
| 248 | } |
| 249 | |
| 250 | if (ccdc_dev) { |
| 251 | printk(KERN_ERR "ccdc already registered\n"); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 252 | ret = -EINVAL; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 253 | goto unlock; |
| 254 | } |
| 255 | |
| 256 | ccdc_dev = dev; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 257 | unlock: |
| 258 | mutex_unlock(&ccdc_lock); |
| 259 | return ret; |
| 260 | } |
| 261 | EXPORT_SYMBOL(vpfe_register_ccdc_device); |
| 262 | |
| 263 | /* |
| 264 | * vpfe_unregister_ccdc_device. CCDC module calls this to |
| 265 | * unregister with vpfe capture |
| 266 | */ |
| 267 | void vpfe_unregister_ccdc_device(struct ccdc_hw_device *dev) |
| 268 | { |
| 269 | if (NULL == dev) { |
| 270 | printk(KERN_ERR "invalid ccdc device ptr\n"); |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | printk(KERN_NOTICE "vpfe_unregister_ccdc_device, dev->name = %s\n", |
| 275 | dev->name); |
| 276 | |
| 277 | if (strcmp(dev->name, ccdc_cfg->name)) { |
| 278 | /* ignore this ccdc */ |
| 279 | return; |
| 280 | } |
| 281 | |
| 282 | mutex_lock(&ccdc_lock); |
| 283 | ccdc_dev = NULL; |
| 284 | mutex_unlock(&ccdc_lock); |
| 285 | return; |
| 286 | } |
| 287 | EXPORT_SYMBOL(vpfe_unregister_ccdc_device); |
| 288 | |
| 289 | /* |
| 290 | * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings |
| 291 | */ |
| 292 | static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe_dev, |
| 293 | struct v4l2_format *f) |
| 294 | { |
| 295 | struct v4l2_rect image_win; |
| 296 | enum ccdc_buftype buf_type; |
| 297 | enum ccdc_frmfmt frm_fmt; |
| 298 | |
| 299 | memset(f, 0, sizeof(*f)); |
| 300 | f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| 301 | ccdc_dev->hw_ops.get_image_window(&image_win); |
| 302 | f->fmt.pix.width = image_win.width; |
| 303 | f->fmt.pix.height = image_win.height; |
| 304 | f->fmt.pix.bytesperline = ccdc_dev->hw_ops.get_line_length(); |
| 305 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * |
| 306 | f->fmt.pix.height; |
| 307 | buf_type = ccdc_dev->hw_ops.get_buftype(); |
| 308 | f->fmt.pix.pixelformat = ccdc_dev->hw_ops.get_pixel_format(); |
| 309 | frm_fmt = ccdc_dev->hw_ops.get_frame_format(); |
| 310 | if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) |
| 311 | f->fmt.pix.field = V4L2_FIELD_NONE; |
| 312 | else if (frm_fmt == CCDC_FRMFMT_INTERLACED) { |
| 313 | if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) |
| 314 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; |
| 315 | else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) |
| 316 | f->fmt.pix.field = V4L2_FIELD_SEQ_TB; |
| 317 | else { |
| 318 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf_type\n"); |
| 319 | return -EINVAL; |
| 320 | } |
| 321 | } else { |
| 322 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid frm_fmt\n"); |
| 323 | return -EINVAL; |
| 324 | } |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | /* |
| 329 | * vpfe_config_ccdc_image_format() |
| 330 | * For a pix format, configure ccdc to setup the capture |
| 331 | */ |
| 332 | static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe_dev) |
| 333 | { |
| 334 | enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED; |
| 335 | int ret = 0; |
| 336 | |
| 337 | if (ccdc_dev->hw_ops.set_pixel_format( |
| 338 | vpfe_dev->fmt.fmt.pix.pixelformat) < 0) { |
| 339 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 340 | "couldn't set pix format in ccdc\n"); |
| 341 | return -EINVAL; |
| 342 | } |
| 343 | /* configure the image window */ |
| 344 | ccdc_dev->hw_ops.set_image_window(&vpfe_dev->crop); |
| 345 | |
| 346 | switch (vpfe_dev->fmt.fmt.pix.field) { |
| 347 | case V4L2_FIELD_INTERLACED: |
| 348 | /* do nothing, since it is default */ |
| 349 | ret = ccdc_dev->hw_ops.set_buftype( |
| 350 | CCDC_BUFTYPE_FLD_INTERLEAVED); |
| 351 | break; |
| 352 | case V4L2_FIELD_NONE: |
| 353 | frm_fmt = CCDC_FRMFMT_PROGRESSIVE; |
| 354 | /* buffer type only applicable for interlaced scan */ |
| 355 | break; |
| 356 | case V4L2_FIELD_SEQ_TB: |
| 357 | ret = ccdc_dev->hw_ops.set_buftype( |
| 358 | CCDC_BUFTYPE_FLD_SEPARATED); |
| 359 | break; |
| 360 | default: |
| 361 | return -EINVAL; |
| 362 | } |
| 363 | |
| 364 | /* set the frame format */ |
| 365 | if (!ret) |
| 366 | ret = ccdc_dev->hw_ops.set_frame_format(frm_fmt); |
| 367 | return ret; |
| 368 | } |
| 369 | /* |
| 370 | * vpfe_config_image_format() |
| 371 | * For a given standard, this functions sets up the default |
| 372 | * pix format & crop values in the vpfe device and ccdc. It first |
| 373 | * starts with defaults based values from the standard table. |
| 374 | * It then checks if sub device support g_fmt and then override the |
| 375 | * values based on that.Sets crop values to match with scan resolution |
| 376 | * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the |
| 377 | * values in ccdc |
| 378 | */ |
| 379 | static int vpfe_config_image_format(struct vpfe_device *vpfe_dev, |
| 380 | const v4l2_std_id *std_id) |
| 381 | { |
| 382 | struct vpfe_subdev_info *sdinfo = vpfe_dev->current_subdev; |
| 383 | int i, ret = 0; |
| 384 | |
| 385 | for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) { |
| 386 | if (vpfe_standards[i].std_id & *std_id) { |
| 387 | vpfe_dev->std_info.active_pixels = |
| 388 | vpfe_standards[i].width; |
| 389 | vpfe_dev->std_info.active_lines = |
| 390 | vpfe_standards[i].height; |
| 391 | vpfe_dev->std_info.frame_format = |
| 392 | vpfe_standards[i].frame_format; |
| 393 | vpfe_dev->std_index = i; |
| 394 | break; |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | if (i == ARRAY_SIZE(vpfe_standards)) { |
| 399 | v4l2_err(&vpfe_dev->v4l2_dev, "standard not supported\n"); |
| 400 | return -EINVAL; |
| 401 | } |
| 402 | |
| 403 | vpfe_dev->crop.top = 0; |
| 404 | vpfe_dev->crop.left = 0; |
| 405 | vpfe_dev->crop.width = vpfe_dev->std_info.active_pixels; |
| 406 | vpfe_dev->crop.height = vpfe_dev->std_info.active_lines; |
| 407 | vpfe_dev->fmt.fmt.pix.width = vpfe_dev->crop.width; |
| 408 | vpfe_dev->fmt.fmt.pix.height = vpfe_dev->crop.height; |
| 409 | |
| 410 | /* first field and frame format based on standard frame format */ |
| 411 | if (vpfe_dev->std_info.frame_format) { |
| 412 | vpfe_dev->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED; |
| 413 | /* assume V4L2_PIX_FMT_UYVY as default */ |
| 414 | vpfe_dev->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY; |
| 415 | } else { |
| 416 | vpfe_dev->fmt.fmt.pix.field = V4L2_FIELD_NONE; |
| 417 | /* assume V4L2_PIX_FMT_SBGGR8 */ |
| 418 | vpfe_dev->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8; |
| 419 | } |
| 420 | |
| 421 | /* if sub device supports g_fmt, override the defaults */ |
| 422 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, |
| 423 | sdinfo->grp_id, video, g_fmt, &vpfe_dev->fmt); |
| 424 | |
| 425 | if (ret && ret != -ENOIOCTLCMD) { |
| 426 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 427 | "error in getting g_fmt from sub device\n"); |
| 428 | return ret; |
| 429 | } |
| 430 | |
| 431 | /* Sets the values in CCDC */ |
| 432 | ret = vpfe_config_ccdc_image_format(vpfe_dev); |
| 433 | if (ret) |
| 434 | return ret; |
| 435 | |
| 436 | /* Update the values of sizeimage and bytesperline */ |
| 437 | if (!ret) { |
| 438 | vpfe_dev->fmt.fmt.pix.bytesperline = |
| 439 | ccdc_dev->hw_ops.get_line_length(); |
| 440 | vpfe_dev->fmt.fmt.pix.sizeimage = |
| 441 | vpfe_dev->fmt.fmt.pix.bytesperline * |
| 442 | vpfe_dev->fmt.fmt.pix.height; |
| 443 | } |
| 444 | return ret; |
| 445 | } |
| 446 | |
| 447 | static int vpfe_initialize_device(struct vpfe_device *vpfe_dev) |
| 448 | { |
| 449 | int ret = 0; |
| 450 | |
| 451 | /* set first input of current subdevice as the current input */ |
| 452 | vpfe_dev->current_input = 0; |
| 453 | |
| 454 | /* set default standard */ |
| 455 | vpfe_dev->std_index = 0; |
| 456 | |
| 457 | /* Configure the default format information */ |
| 458 | ret = vpfe_config_image_format(vpfe_dev, |
| 459 | &vpfe_standards[vpfe_dev->std_index].std_id); |
| 460 | if (ret) |
| 461 | return ret; |
| 462 | |
| 463 | /* now open the ccdc device to initialize it */ |
| 464 | mutex_lock(&ccdc_lock); |
| 465 | if (NULL == ccdc_dev) { |
| 466 | v4l2_err(&vpfe_dev->v4l2_dev, "ccdc device not registered\n"); |
| 467 | ret = -ENODEV; |
| 468 | goto unlock; |
| 469 | } |
| 470 | |
| 471 | if (!try_module_get(ccdc_dev->owner)) { |
| 472 | v4l2_err(&vpfe_dev->v4l2_dev, "Couldn't lock ccdc module\n"); |
| 473 | ret = -ENODEV; |
| 474 | goto unlock; |
| 475 | } |
| 476 | ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev); |
| 477 | if (!ret) |
| 478 | vpfe_dev->initialized = 1; |
| 479 | unlock: |
| 480 | mutex_unlock(&ccdc_lock); |
| 481 | return ret; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * vpfe_open : It creates object of file handle structure and |
| 486 | * stores it in private_data member of filepointer |
| 487 | */ |
| 488 | static int vpfe_open(struct file *file) |
| 489 | { |
| 490 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 491 | struct vpfe_fh *fh; |
| 492 | |
| 493 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n"); |
| 494 | |
| 495 | if (!vpfe_dev->cfg->num_subdevs) { |
| 496 | v4l2_err(&vpfe_dev->v4l2_dev, "No decoder registered\n"); |
| 497 | return -ENODEV; |
| 498 | } |
| 499 | |
| 500 | /* Allocate memory for the file handle object */ |
| 501 | fh = kmalloc(sizeof(struct vpfe_fh), GFP_KERNEL); |
| 502 | if (NULL == fh) { |
| 503 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 504 | "unable to allocate memory for file handle object\n"); |
| 505 | return -ENOMEM; |
| 506 | } |
| 507 | /* store pointer to fh in private_data member of file */ |
| 508 | file->private_data = fh; |
| 509 | fh->vpfe_dev = vpfe_dev; |
| 510 | mutex_lock(&vpfe_dev->lock); |
| 511 | /* If decoder is not initialized. initialize it */ |
| 512 | if (!vpfe_dev->initialized) { |
| 513 | if (vpfe_initialize_device(vpfe_dev)) { |
| 514 | mutex_unlock(&vpfe_dev->lock); |
| 515 | return -ENODEV; |
| 516 | } |
| 517 | } |
| 518 | /* Increment device usrs counter */ |
| 519 | vpfe_dev->usrs++; |
| 520 | /* Set io_allowed member to false */ |
| 521 | fh->io_allowed = 0; |
| 522 | /* Initialize priority of this instance to default priority */ |
| 523 | fh->prio = V4L2_PRIORITY_UNSET; |
| 524 | v4l2_prio_open(&vpfe_dev->prio, &fh->prio); |
| 525 | mutex_unlock(&vpfe_dev->lock); |
| 526 | return 0; |
| 527 | } |
| 528 | |
| 529 | static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev) |
| 530 | { |
| 531 | unsigned long addr; |
| 532 | |
| 533 | vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next, |
| 534 | struct videobuf_buffer, queue); |
| 535 | list_del(&vpfe_dev->next_frm->queue); |
| 536 | vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE; |
| 537 | addr = videobuf_to_dma_contig(vpfe_dev->next_frm); |
| 538 | ccdc_dev->hw_ops.setfbaddr(addr); |
| 539 | } |
| 540 | |
| 541 | static void vpfe_process_buffer_complete(struct vpfe_device *vpfe_dev) |
| 542 | { |
| 543 | struct timeval timevalue; |
| 544 | |
| 545 | do_gettimeofday(&timevalue); |
| 546 | vpfe_dev->cur_frm->ts = timevalue; |
| 547 | vpfe_dev->cur_frm->state = VIDEOBUF_DONE; |
| 548 | vpfe_dev->cur_frm->size = vpfe_dev->fmt.fmt.pix.sizeimage; |
| 549 | wake_up_interruptible(&vpfe_dev->cur_frm->done); |
| 550 | vpfe_dev->cur_frm = vpfe_dev->next_frm; |
| 551 | } |
| 552 | |
| 553 | /* ISR for VINT0*/ |
| 554 | static irqreturn_t vpfe_isr(int irq, void *dev_id) |
| 555 | { |
| 556 | struct vpfe_device *vpfe_dev = dev_id; |
| 557 | enum v4l2_field field; |
| 558 | unsigned long addr; |
| 559 | int fid; |
| 560 | |
| 561 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n"); |
| 562 | field = vpfe_dev->fmt.fmt.pix.field; |
| 563 | |
| 564 | /* if streaming not started, don't do anything */ |
| 565 | if (!vpfe_dev->started) |
| 566 | return IRQ_HANDLED; |
| 567 | |
| 568 | /* only for 6446 this will be applicable */ |
| 569 | if (NULL != ccdc_dev->hw_ops.reset) |
| 570 | ccdc_dev->hw_ops.reset(); |
| 571 | |
| 572 | if (field == V4L2_FIELD_NONE) { |
| 573 | /* handle progressive frame capture */ |
| 574 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, |
| 575 | "frame format is progressive...\n"); |
| 576 | if (vpfe_dev->cur_frm != vpfe_dev->next_frm) |
| 577 | vpfe_process_buffer_complete(vpfe_dev); |
| 578 | return IRQ_HANDLED; |
| 579 | } |
| 580 | |
| 581 | /* interlaced or TB capture check which field we are in hardware */ |
| 582 | fid = ccdc_dev->hw_ops.getfid(); |
| 583 | |
| 584 | /* switch the software maintained field id */ |
| 585 | vpfe_dev->field_id ^= 1; |
| 586 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "field id = %x:%x.\n", |
| 587 | fid, vpfe_dev->field_id); |
| 588 | if (fid == vpfe_dev->field_id) { |
| 589 | /* we are in-sync here,continue */ |
| 590 | if (fid == 0) { |
| 591 | /* |
| 592 | * One frame is just being captured. If the next frame |
| 593 | * is available, release the current frame and move on |
| 594 | */ |
| 595 | if (vpfe_dev->cur_frm != vpfe_dev->next_frm) |
| 596 | vpfe_process_buffer_complete(vpfe_dev); |
| 597 | /* |
| 598 | * based on whether the two fields are stored |
| 599 | * interleavely or separately in memory, reconfigure |
| 600 | * the CCDC memory address |
| 601 | */ |
| 602 | if (field == V4L2_FIELD_SEQ_TB) { |
| 603 | addr = |
| 604 | videobuf_to_dma_contig(vpfe_dev->cur_frm); |
| 605 | addr += vpfe_dev->field_off; |
| 606 | ccdc_dev->hw_ops.setfbaddr(addr); |
| 607 | } |
| 608 | return IRQ_HANDLED; |
| 609 | } |
| 610 | /* |
| 611 | * if one field is just being captured configure |
| 612 | * the next frame get the next frame from the empty |
| 613 | * queue if no frame is available hold on to the |
| 614 | * current buffer |
| 615 | */ |
| 616 | spin_lock(&vpfe_dev->dma_queue_lock); |
| 617 | if (!list_empty(&vpfe_dev->dma_queue) && |
| 618 | vpfe_dev->cur_frm == vpfe_dev->next_frm) |
| 619 | vpfe_schedule_next_buffer(vpfe_dev); |
| 620 | spin_unlock(&vpfe_dev->dma_queue_lock); |
| 621 | } else if (fid == 0) { |
| 622 | /* |
| 623 | * out of sync. Recover from any hardware out-of-sync. |
| 624 | * May loose one frame |
| 625 | */ |
| 626 | vpfe_dev->field_id = fid; |
| 627 | } |
| 628 | return IRQ_HANDLED; |
| 629 | } |
| 630 | |
| 631 | /* vdint1_isr - isr handler for VINT1 interrupt */ |
| 632 | static irqreturn_t vdint1_isr(int irq, void *dev_id) |
| 633 | { |
| 634 | struct vpfe_device *vpfe_dev = dev_id; |
| 635 | |
| 636 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n"); |
| 637 | |
| 638 | /* if streaming not started, don't do anything */ |
| 639 | if (!vpfe_dev->started) |
| 640 | return IRQ_HANDLED; |
| 641 | |
| 642 | spin_lock(&vpfe_dev->dma_queue_lock); |
| 643 | if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) && |
| 644 | !list_empty(&vpfe_dev->dma_queue) && |
| 645 | vpfe_dev->cur_frm == vpfe_dev->next_frm) |
| 646 | vpfe_schedule_next_buffer(vpfe_dev); |
| 647 | spin_unlock(&vpfe_dev->dma_queue_lock); |
| 648 | return IRQ_HANDLED; |
| 649 | } |
| 650 | |
| 651 | static void vpfe_detach_irq(struct vpfe_device *vpfe_dev) |
| 652 | { |
| 653 | enum ccdc_frmfmt frame_format; |
| 654 | |
| 655 | frame_format = ccdc_dev->hw_ops.get_frame_format(); |
| 656 | if (frame_format == CCDC_FRMFMT_PROGRESSIVE) |
Vaibhav Hiremath | 1ead696 | 2009-11-09 09:15:07 -0300 | [diff] [blame] | 657 | free_irq(vpfe_dev->ccdc_irq1, vpfe_dev); |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 658 | } |
| 659 | |
| 660 | static int vpfe_attach_irq(struct vpfe_device *vpfe_dev) |
| 661 | { |
| 662 | enum ccdc_frmfmt frame_format; |
| 663 | |
| 664 | frame_format = ccdc_dev->hw_ops.get_frame_format(); |
| 665 | if (frame_format == CCDC_FRMFMT_PROGRESSIVE) { |
| 666 | return request_irq(vpfe_dev->ccdc_irq1, vdint1_isr, |
| 667 | IRQF_DISABLED, "vpfe_capture1", |
| 668 | vpfe_dev); |
| 669 | } |
| 670 | return 0; |
| 671 | } |
| 672 | |
| 673 | /* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */ |
| 674 | static void vpfe_stop_ccdc_capture(struct vpfe_device *vpfe_dev) |
| 675 | { |
| 676 | vpfe_dev->started = 0; |
| 677 | ccdc_dev->hw_ops.enable(0); |
| 678 | if (ccdc_dev->hw_ops.enable_out_to_sdram) |
| 679 | ccdc_dev->hw_ops.enable_out_to_sdram(0); |
| 680 | } |
| 681 | |
| 682 | /* |
| 683 | * vpfe_release : This function deletes buffer queue, frees the |
| 684 | * buffers and the vpfe file handle |
| 685 | */ |
| 686 | static int vpfe_release(struct file *file) |
| 687 | { |
| 688 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 689 | struct vpfe_fh *fh = file->private_data; |
| 690 | struct vpfe_subdev_info *sdinfo; |
| 691 | int ret; |
| 692 | |
| 693 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n"); |
| 694 | |
| 695 | /* Get the device lock */ |
| 696 | mutex_lock(&vpfe_dev->lock); |
| 697 | /* if this instance is doing IO */ |
| 698 | if (fh->io_allowed) { |
| 699 | if (vpfe_dev->started) { |
| 700 | sdinfo = vpfe_dev->current_subdev; |
| 701 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, |
| 702 | sdinfo->grp_id, |
| 703 | video, s_stream, 0); |
| 704 | if (ret && (ret != -ENOIOCTLCMD)) |
| 705 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 706 | "stream off failed in subdev\n"); |
| 707 | vpfe_stop_ccdc_capture(vpfe_dev); |
| 708 | vpfe_detach_irq(vpfe_dev); |
| 709 | videobuf_streamoff(&vpfe_dev->buffer_queue); |
| 710 | } |
| 711 | vpfe_dev->io_usrs = 0; |
| 712 | vpfe_dev->numbuffers = config_params.numbuffers; |
| 713 | } |
| 714 | |
| 715 | /* Decrement device usrs counter */ |
| 716 | vpfe_dev->usrs--; |
| 717 | /* Close the priority */ |
| 718 | v4l2_prio_close(&vpfe_dev->prio, &fh->prio); |
| 719 | /* If this is the last file handle */ |
| 720 | if (!vpfe_dev->usrs) { |
| 721 | vpfe_dev->initialized = 0; |
| 722 | if (ccdc_dev->hw_ops.close) |
| 723 | ccdc_dev->hw_ops.close(vpfe_dev->pdev); |
| 724 | module_put(ccdc_dev->owner); |
| 725 | } |
| 726 | mutex_unlock(&vpfe_dev->lock); |
| 727 | file->private_data = NULL; |
| 728 | /* Free memory allocated to file handle object */ |
| 729 | kfree(fh); |
| 730 | return 0; |
| 731 | } |
| 732 | |
| 733 | /* |
| 734 | * vpfe_mmap : It is used to map kernel space buffers |
| 735 | * into user spaces |
| 736 | */ |
| 737 | static int vpfe_mmap(struct file *file, struct vm_area_struct *vma) |
| 738 | { |
| 739 | /* Get the device object and file handle object */ |
| 740 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 741 | |
| 742 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n"); |
| 743 | |
| 744 | return videobuf_mmap_mapper(&vpfe_dev->buffer_queue, vma); |
| 745 | } |
| 746 | |
| 747 | /* |
| 748 | * vpfe_poll: It is used for select/poll system call |
| 749 | */ |
| 750 | static unsigned int vpfe_poll(struct file *file, poll_table *wait) |
| 751 | { |
| 752 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 753 | |
| 754 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n"); |
| 755 | |
| 756 | if (vpfe_dev->started) |
| 757 | return videobuf_poll_stream(file, |
| 758 | &vpfe_dev->buffer_queue, wait); |
| 759 | return 0; |
| 760 | } |
| 761 | |
| 762 | /* vpfe capture driver file operations */ |
| 763 | static const struct v4l2_file_operations vpfe_fops = { |
| 764 | .owner = THIS_MODULE, |
| 765 | .open = vpfe_open, |
| 766 | .release = vpfe_release, |
| 767 | .unlocked_ioctl = video_ioctl2, |
| 768 | .mmap = vpfe_mmap, |
| 769 | .poll = vpfe_poll |
| 770 | }; |
| 771 | |
| 772 | /* |
| 773 | * vpfe_check_format() |
| 774 | * This function adjust the input pixel format as per hardware |
| 775 | * capabilities and update the same in pixfmt. |
| 776 | * Following algorithm used :- |
| 777 | * |
| 778 | * If given pixformat is not in the vpfe list of pix formats or not |
| 779 | * supported by the hardware, current value of pixformat in the device |
| 780 | * is used |
| 781 | * If given field is not supported, then current field is used. If field |
| 782 | * is different from current, then it is matched with that from sub device. |
| 783 | * Minimum height is 2 lines for interlaced or tb field and 1 line for |
| 784 | * progressive. Maximum height is clamped to active active lines of scan |
| 785 | * Minimum width is 32 bytes in memory and width is clamped to active |
| 786 | * pixels of scan. |
| 787 | * bytesperline is a multiple of 32. |
| 788 | */ |
| 789 | static const struct vpfe_pixel_format * |
| 790 | vpfe_check_format(struct vpfe_device *vpfe_dev, |
| 791 | struct v4l2_pix_format *pixfmt) |
| 792 | { |
| 793 | u32 min_height = 1, min_width = 32, max_width, max_height; |
| 794 | const struct vpfe_pixel_format *vpfe_pix_fmt; |
| 795 | u32 pix; |
| 796 | int temp, found; |
| 797 | |
| 798 | vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat); |
| 799 | if (NULL == vpfe_pix_fmt) { |
| 800 | /* |
| 801 | * use current pixel format in the vpfe device. We |
| 802 | * will find this pix format in the table |
| 803 | */ |
| 804 | pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat; |
| 805 | vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat); |
| 806 | } |
| 807 | |
| 808 | /* check if hw supports it */ |
| 809 | temp = 0; |
| 810 | found = 0; |
| 811 | while (ccdc_dev->hw_ops.enum_pix(&pix, temp) >= 0) { |
| 812 | if (vpfe_pix_fmt->fmtdesc.pixelformat == pix) { |
| 813 | found = 1; |
| 814 | break; |
| 815 | } |
| 816 | temp++; |
| 817 | } |
| 818 | |
| 819 | if (!found) { |
| 820 | /* use current pixel format */ |
| 821 | pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat; |
| 822 | /* |
| 823 | * Since this is currently used in the vpfe device, we |
| 824 | * will find this pix format in the table |
| 825 | */ |
| 826 | vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat); |
| 827 | } |
| 828 | |
| 829 | /* check what field format is supported */ |
| 830 | if (pixfmt->field == V4L2_FIELD_ANY) { |
| 831 | /* if field is any, use current value as default */ |
| 832 | pixfmt->field = vpfe_dev->fmt.fmt.pix.field; |
| 833 | } |
| 834 | |
| 835 | /* |
| 836 | * if field is not same as current field in the vpfe device |
| 837 | * try matching the field with the sub device field |
| 838 | */ |
| 839 | if (vpfe_dev->fmt.fmt.pix.field != pixfmt->field) { |
| 840 | /* |
| 841 | * If field value is not in the supported fields, use current |
| 842 | * field used in the device as default |
| 843 | */ |
| 844 | switch (pixfmt->field) { |
| 845 | case V4L2_FIELD_INTERLACED: |
| 846 | case V4L2_FIELD_SEQ_TB: |
| 847 | /* if sub device is supporting progressive, use that */ |
| 848 | if (!vpfe_dev->std_info.frame_format) |
| 849 | pixfmt->field = V4L2_FIELD_NONE; |
| 850 | break; |
| 851 | case V4L2_FIELD_NONE: |
| 852 | if (vpfe_dev->std_info.frame_format) |
| 853 | pixfmt->field = V4L2_FIELD_INTERLACED; |
| 854 | break; |
| 855 | |
| 856 | default: |
| 857 | /* use current field as default */ |
| 858 | pixfmt->field = vpfe_dev->fmt.fmt.pix.field; |
| 859 | break; |
| 860 | } |
| 861 | } |
| 862 | |
| 863 | /* Now adjust image resolutions supported */ |
| 864 | if (pixfmt->field == V4L2_FIELD_INTERLACED || |
| 865 | pixfmt->field == V4L2_FIELD_SEQ_TB) |
| 866 | min_height = 2; |
| 867 | |
| 868 | max_width = vpfe_dev->std_info.active_pixels; |
| 869 | max_height = vpfe_dev->std_info.active_lines; |
| 870 | min_width /= vpfe_pix_fmt->bpp; |
| 871 | |
| 872 | v4l2_info(&vpfe_dev->v4l2_dev, "width = %d, height = %d, bpp = %d\n", |
| 873 | pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp); |
| 874 | |
| 875 | pixfmt->width = clamp((pixfmt->width), min_width, max_width); |
| 876 | pixfmt->height = clamp((pixfmt->height), min_height, max_height); |
| 877 | |
| 878 | /* If interlaced, adjust height to be a multiple of 2 */ |
| 879 | if (pixfmt->field == V4L2_FIELD_INTERLACED) |
| 880 | pixfmt->height &= (~1); |
| 881 | /* |
| 882 | * recalculate bytesperline and sizeimage since width |
| 883 | * and height might have changed |
| 884 | */ |
| 885 | pixfmt->bytesperline = (((pixfmt->width * vpfe_pix_fmt->bpp) + 31) |
| 886 | & ~31); |
| 887 | if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) |
| 888 | pixfmt->sizeimage = |
| 889 | pixfmt->bytesperline * pixfmt->height + |
| 890 | ((pixfmt->bytesperline * pixfmt->height) >> 1); |
| 891 | else |
| 892 | pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height; |
| 893 | |
| 894 | v4l2_info(&vpfe_dev->v4l2_dev, "adjusted width = %d, height =" |
| 895 | " %d, bpp = %d, bytesperline = %d, sizeimage = %d\n", |
| 896 | pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp, |
| 897 | pixfmt->bytesperline, pixfmt->sizeimage); |
| 898 | return vpfe_pix_fmt; |
| 899 | } |
| 900 | |
| 901 | static int vpfe_querycap(struct file *file, void *priv, |
| 902 | struct v4l2_capability *cap) |
| 903 | { |
| 904 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 905 | |
| 906 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n"); |
| 907 | |
| 908 | cap->version = VPFE_CAPTURE_VERSION_CODE; |
| 909 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 910 | strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver)); |
| 911 | strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info)); |
| 912 | strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card)); |
| 913 | return 0; |
| 914 | } |
| 915 | |
| 916 | static int vpfe_g_fmt_vid_cap(struct file *file, void *priv, |
| 917 | struct v4l2_format *fmt) |
| 918 | { |
| 919 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 920 | int ret = 0; |
| 921 | |
| 922 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt_vid_cap\n"); |
| 923 | /* Fill in the information about format */ |
| 924 | *fmt = vpfe_dev->fmt; |
| 925 | return ret; |
| 926 | } |
| 927 | |
| 928 | static int vpfe_enum_fmt_vid_cap(struct file *file, void *priv, |
| 929 | struct v4l2_fmtdesc *fmt) |
| 930 | { |
| 931 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 932 | const struct vpfe_pixel_format *pix_fmt; |
| 933 | int temp_index; |
| 934 | u32 pix; |
| 935 | |
| 936 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt_vid_cap\n"); |
| 937 | |
| 938 | if (ccdc_dev->hw_ops.enum_pix(&pix, fmt->index) < 0) |
| 939 | return -EINVAL; |
| 940 | |
| 941 | /* Fill in the information about format */ |
| 942 | pix_fmt = vpfe_lookup_pix_format(pix); |
| 943 | if (NULL != pix_fmt) { |
| 944 | temp_index = fmt->index; |
| 945 | *fmt = pix_fmt->fmtdesc; |
| 946 | fmt->index = temp_index; |
| 947 | return 0; |
| 948 | } |
| 949 | return -EINVAL; |
| 950 | } |
| 951 | |
| 952 | static int vpfe_s_fmt_vid_cap(struct file *file, void *priv, |
| 953 | struct v4l2_format *fmt) |
| 954 | { |
| 955 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 956 | const struct vpfe_pixel_format *pix_fmts; |
| 957 | int ret = 0; |
| 958 | |
| 959 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt_vid_cap\n"); |
| 960 | |
| 961 | /* If streaming is started, return error */ |
| 962 | if (vpfe_dev->started) { |
| 963 | v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n"); |
| 964 | return -EBUSY; |
| 965 | } |
| 966 | |
| 967 | /* Check for valid frame format */ |
| 968 | pix_fmts = vpfe_check_format(vpfe_dev, &fmt->fmt.pix); |
| 969 | |
| 970 | if (NULL == pix_fmts) |
| 971 | return -EINVAL; |
| 972 | |
| 973 | /* store the pixel format in the device object */ |
| 974 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 975 | if (ret) |
| 976 | return ret; |
| 977 | |
| 978 | /* First detach any IRQ if currently attached */ |
| 979 | vpfe_detach_irq(vpfe_dev); |
| 980 | vpfe_dev->fmt = *fmt; |
| 981 | /* set image capture parameters in the ccdc */ |
| 982 | ret = vpfe_config_ccdc_image_format(vpfe_dev); |
| 983 | mutex_unlock(&vpfe_dev->lock); |
| 984 | return ret; |
| 985 | } |
| 986 | |
| 987 | static int vpfe_try_fmt_vid_cap(struct file *file, void *priv, |
| 988 | struct v4l2_format *f) |
| 989 | { |
| 990 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 991 | const struct vpfe_pixel_format *pix_fmts; |
| 992 | |
| 993 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt_vid_cap\n"); |
| 994 | |
| 995 | pix_fmts = vpfe_check_format(vpfe_dev, &f->fmt.pix); |
| 996 | if (NULL == pix_fmts) |
| 997 | return -EINVAL; |
| 998 | return 0; |
| 999 | } |
| 1000 | |
| 1001 | /* |
| 1002 | * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a |
| 1003 | * given app input index |
| 1004 | */ |
| 1005 | static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe_dev, |
| 1006 | int *subdev_index, |
| 1007 | int *subdev_input_index, |
| 1008 | int app_input_index) |
| 1009 | { |
| 1010 | struct vpfe_config *cfg = vpfe_dev->cfg; |
| 1011 | struct vpfe_subdev_info *sdinfo; |
| 1012 | int i, j = 0; |
| 1013 | |
| 1014 | for (i = 0; i < cfg->num_subdevs; i++) { |
| 1015 | sdinfo = &cfg->sub_devs[i]; |
| 1016 | if (app_input_index < (j + sdinfo->num_inputs)) { |
| 1017 | *subdev_index = i; |
| 1018 | *subdev_input_index = app_input_index - j; |
| 1019 | return 0; |
| 1020 | } |
| 1021 | j += sdinfo->num_inputs; |
| 1022 | } |
| 1023 | return -EINVAL; |
| 1024 | } |
| 1025 | |
| 1026 | /* |
| 1027 | * vpfe_get_app_input - Get app input index for a given subdev input index |
| 1028 | * driver stores the input index of the current sub device and translate it |
| 1029 | * when application request the current input |
| 1030 | */ |
| 1031 | static int vpfe_get_app_input_index(struct vpfe_device *vpfe_dev, |
| 1032 | int *app_input_index) |
| 1033 | { |
| 1034 | struct vpfe_config *cfg = vpfe_dev->cfg; |
| 1035 | struct vpfe_subdev_info *sdinfo; |
| 1036 | int i, j = 0; |
| 1037 | |
| 1038 | for (i = 0; i < cfg->num_subdevs; i++) { |
| 1039 | sdinfo = &cfg->sub_devs[i]; |
| 1040 | if (!strcmp(sdinfo->name, vpfe_dev->current_subdev->name)) { |
| 1041 | if (vpfe_dev->current_input >= sdinfo->num_inputs) |
| 1042 | return -1; |
| 1043 | *app_input_index = j + vpfe_dev->current_input; |
| 1044 | return 0; |
| 1045 | } |
| 1046 | j += sdinfo->num_inputs; |
| 1047 | } |
| 1048 | return -EINVAL; |
| 1049 | } |
| 1050 | |
| 1051 | static int vpfe_enum_input(struct file *file, void *priv, |
| 1052 | struct v4l2_input *inp) |
| 1053 | { |
| 1054 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1055 | struct vpfe_subdev_info *sdinfo; |
| 1056 | int subdev, index ; |
| 1057 | |
| 1058 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n"); |
| 1059 | |
| 1060 | if (vpfe_get_subdev_input_index(vpfe_dev, |
| 1061 | &subdev, |
| 1062 | &index, |
| 1063 | inp->index) < 0) { |
| 1064 | v4l2_err(&vpfe_dev->v4l2_dev, "input information not found" |
| 1065 | " for the subdev\n"); |
| 1066 | return -EINVAL; |
| 1067 | } |
| 1068 | sdinfo = &vpfe_dev->cfg->sub_devs[subdev]; |
| 1069 | memcpy(inp, &sdinfo->inputs[index], sizeof(struct v4l2_input)); |
| 1070 | return 0; |
| 1071 | } |
| 1072 | |
| 1073 | static int vpfe_g_input(struct file *file, void *priv, unsigned int *index) |
| 1074 | { |
| 1075 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1076 | |
| 1077 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n"); |
| 1078 | |
| 1079 | return vpfe_get_app_input_index(vpfe_dev, index); |
| 1080 | } |
| 1081 | |
| 1082 | |
| 1083 | static int vpfe_s_input(struct file *file, void *priv, unsigned int index) |
| 1084 | { |
| 1085 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1086 | struct vpfe_subdev_info *sdinfo; |
| 1087 | int subdev_index, inp_index; |
| 1088 | struct vpfe_route *route; |
| 1089 | u32 input = 0, output = 0; |
| 1090 | int ret = -EINVAL; |
| 1091 | |
| 1092 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n"); |
| 1093 | |
| 1094 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1095 | if (ret) |
| 1096 | return ret; |
| 1097 | |
| 1098 | /* |
| 1099 | * If streaming is started return device busy |
| 1100 | * error |
| 1101 | */ |
| 1102 | if (vpfe_dev->started) { |
| 1103 | v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n"); |
| 1104 | ret = -EBUSY; |
| 1105 | goto unlock_out; |
| 1106 | } |
| 1107 | |
| 1108 | if (vpfe_get_subdev_input_index(vpfe_dev, |
| 1109 | &subdev_index, |
| 1110 | &inp_index, |
| 1111 | index) < 0) { |
| 1112 | v4l2_err(&vpfe_dev->v4l2_dev, "invalid input index\n"); |
| 1113 | goto unlock_out; |
| 1114 | } |
| 1115 | |
| 1116 | sdinfo = &vpfe_dev->cfg->sub_devs[subdev_index]; |
| 1117 | route = &sdinfo->routes[inp_index]; |
| 1118 | if (route && sdinfo->can_route) { |
| 1119 | input = route->input; |
| 1120 | output = route->output; |
| 1121 | } |
| 1122 | |
| 1123 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1124 | video, s_routing, input, output, 0); |
| 1125 | |
| 1126 | if (ret) { |
| 1127 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1128 | "vpfe_doioctl:error in setting input in decoder\n"); |
| 1129 | ret = -EINVAL; |
| 1130 | goto unlock_out; |
| 1131 | } |
| 1132 | vpfe_dev->current_subdev = sdinfo; |
| 1133 | vpfe_dev->current_input = index; |
| 1134 | vpfe_dev->std_index = 0; |
| 1135 | |
| 1136 | /* set the bus/interface parameter for the sub device in ccdc */ |
| 1137 | ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params); |
| 1138 | if (ret) |
| 1139 | goto unlock_out; |
| 1140 | |
| 1141 | /* set the default image parameters in the device */ |
| 1142 | ret = vpfe_config_image_format(vpfe_dev, |
| 1143 | &vpfe_standards[vpfe_dev->std_index].std_id); |
| 1144 | unlock_out: |
| 1145 | mutex_unlock(&vpfe_dev->lock); |
| 1146 | return ret; |
| 1147 | } |
| 1148 | |
| 1149 | static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id) |
| 1150 | { |
| 1151 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1152 | struct vpfe_subdev_info *sdinfo; |
| 1153 | int ret = 0; |
| 1154 | |
| 1155 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n"); |
| 1156 | |
| 1157 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1158 | sdinfo = vpfe_dev->current_subdev; |
| 1159 | if (ret) |
| 1160 | return ret; |
| 1161 | /* Call querystd function of decoder device */ |
| 1162 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1163 | video, querystd, std_id); |
| 1164 | mutex_unlock(&vpfe_dev->lock); |
| 1165 | return ret; |
| 1166 | } |
| 1167 | |
| 1168 | static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id *std_id) |
| 1169 | { |
| 1170 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1171 | struct vpfe_subdev_info *sdinfo; |
| 1172 | int ret = 0; |
| 1173 | |
| 1174 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n"); |
| 1175 | |
| 1176 | /* Call decoder driver function to set the standard */ |
| 1177 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1178 | if (ret) |
| 1179 | return ret; |
| 1180 | |
| 1181 | sdinfo = vpfe_dev->current_subdev; |
| 1182 | /* If streaming is started, return device busy error */ |
| 1183 | if (vpfe_dev->started) { |
| 1184 | v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n"); |
| 1185 | ret = -EBUSY; |
| 1186 | goto unlock_out; |
| 1187 | } |
| 1188 | |
| 1189 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1190 | core, s_std, *std_id); |
| 1191 | if (ret < 0) { |
| 1192 | v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n"); |
| 1193 | goto unlock_out; |
| 1194 | } |
| 1195 | ret = vpfe_config_image_format(vpfe_dev, std_id); |
| 1196 | |
| 1197 | unlock_out: |
| 1198 | mutex_unlock(&vpfe_dev->lock); |
| 1199 | return ret; |
| 1200 | } |
| 1201 | |
| 1202 | static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id) |
| 1203 | { |
| 1204 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1205 | |
| 1206 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n"); |
| 1207 | |
| 1208 | *std_id = vpfe_standards[vpfe_dev->std_index].std_id; |
| 1209 | return 0; |
| 1210 | } |
| 1211 | /* |
| 1212 | * Videobuf operations |
| 1213 | */ |
| 1214 | static int vpfe_videobuf_setup(struct videobuf_queue *vq, |
| 1215 | unsigned int *count, |
| 1216 | unsigned int *size) |
| 1217 | { |
| 1218 | struct vpfe_fh *fh = vq->priv_data; |
| 1219 | struct vpfe_device *vpfe_dev = fh->vpfe_dev; |
| 1220 | |
| 1221 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n"); |
| 1222 | *size = config_params.device_bufsize; |
| 1223 | |
| 1224 | if (*count < config_params.min_numbuffers) |
| 1225 | *count = config_params.min_numbuffers; |
| 1226 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, |
| 1227 | "count=%d, size=%d\n", *count, *size); |
| 1228 | return 0; |
| 1229 | } |
| 1230 | |
| 1231 | static int vpfe_videobuf_prepare(struct videobuf_queue *vq, |
| 1232 | struct videobuf_buffer *vb, |
| 1233 | enum v4l2_field field) |
| 1234 | { |
| 1235 | struct vpfe_fh *fh = vq->priv_data; |
| 1236 | struct vpfe_device *vpfe_dev = fh->vpfe_dev; |
| 1237 | |
| 1238 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n"); |
| 1239 | |
| 1240 | /* If buffer is not initialized, initialize it */ |
| 1241 | if (VIDEOBUF_NEEDS_INIT == vb->state) { |
| 1242 | vb->width = vpfe_dev->fmt.fmt.pix.width; |
| 1243 | vb->height = vpfe_dev->fmt.fmt.pix.height; |
| 1244 | vb->size = vpfe_dev->fmt.fmt.pix.sizeimage; |
| 1245 | vb->field = field; |
| 1246 | } |
| 1247 | vb->state = VIDEOBUF_PREPARED; |
| 1248 | return 0; |
| 1249 | } |
| 1250 | |
| 1251 | static void vpfe_videobuf_queue(struct videobuf_queue *vq, |
| 1252 | struct videobuf_buffer *vb) |
| 1253 | { |
| 1254 | /* Get the file handle object and device object */ |
| 1255 | struct vpfe_fh *fh = vq->priv_data; |
| 1256 | struct vpfe_device *vpfe_dev = fh->vpfe_dev; |
| 1257 | unsigned long flags; |
| 1258 | |
| 1259 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue\n"); |
| 1260 | |
| 1261 | /* add the buffer to the DMA queue */ |
| 1262 | spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags); |
| 1263 | list_add_tail(&vb->queue, &vpfe_dev->dma_queue); |
| 1264 | spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags); |
| 1265 | |
| 1266 | /* Change state of the buffer */ |
| 1267 | vb->state = VIDEOBUF_QUEUED; |
| 1268 | } |
| 1269 | |
| 1270 | static void vpfe_videobuf_release(struct videobuf_queue *vq, |
| 1271 | struct videobuf_buffer *vb) |
| 1272 | { |
| 1273 | struct vpfe_fh *fh = vq->priv_data; |
| 1274 | struct vpfe_device *vpfe_dev = fh->vpfe_dev; |
| 1275 | unsigned long flags; |
| 1276 | |
| 1277 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n"); |
| 1278 | |
| 1279 | /* |
| 1280 | * We need to flush the buffer from the dma queue since |
| 1281 | * they are de-allocated |
| 1282 | */ |
| 1283 | spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags); |
| 1284 | INIT_LIST_HEAD(&vpfe_dev->dma_queue); |
| 1285 | spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags); |
| 1286 | videobuf_dma_contig_free(vq, vb); |
| 1287 | vb->state = VIDEOBUF_NEEDS_INIT; |
| 1288 | } |
| 1289 | |
| 1290 | static struct videobuf_queue_ops vpfe_videobuf_qops = { |
| 1291 | .buf_setup = vpfe_videobuf_setup, |
| 1292 | .buf_prepare = vpfe_videobuf_prepare, |
| 1293 | .buf_queue = vpfe_videobuf_queue, |
| 1294 | .buf_release = vpfe_videobuf_release, |
| 1295 | }; |
| 1296 | |
| 1297 | /* |
| 1298 | * vpfe_reqbufs. currently support REQBUF only once opening |
| 1299 | * the device. |
| 1300 | */ |
| 1301 | static int vpfe_reqbufs(struct file *file, void *priv, |
| 1302 | struct v4l2_requestbuffers *req_buf) |
| 1303 | { |
| 1304 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1305 | struct vpfe_fh *fh = file->private_data; |
| 1306 | int ret = 0; |
| 1307 | |
| 1308 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n"); |
| 1309 | |
| 1310 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type) { |
| 1311 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n"); |
| 1312 | return -EINVAL; |
| 1313 | } |
| 1314 | |
| 1315 | if (V4L2_MEMORY_USERPTR == req_buf->memory) { |
| 1316 | /* we don't support user ptr IO */ |
| 1317 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs:" |
| 1318 | " USERPTR IO not supported\n"); |
| 1319 | return -EINVAL; |
| 1320 | } |
| 1321 | |
| 1322 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1323 | if (ret) |
| 1324 | return ret; |
| 1325 | |
| 1326 | if (vpfe_dev->io_usrs != 0) { |
| 1327 | v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n"); |
| 1328 | ret = -EBUSY; |
| 1329 | goto unlock_out; |
| 1330 | } |
| 1331 | |
| 1332 | vpfe_dev->memory = req_buf->memory; |
| 1333 | videobuf_queue_dma_contig_init(&vpfe_dev->buffer_queue, |
| 1334 | &vpfe_videobuf_qops, |
Vaibhav Hiremath | 204e6ea | 2009-11-09 09:07:36 -0300 | [diff] [blame] | 1335 | vpfe_dev->pdev, |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1336 | &vpfe_dev->irqlock, |
| 1337 | req_buf->type, |
| 1338 | vpfe_dev->fmt.fmt.pix.field, |
| 1339 | sizeof(struct videobuf_buffer), |
| 1340 | fh); |
| 1341 | |
| 1342 | fh->io_allowed = 1; |
| 1343 | vpfe_dev->io_usrs = 1; |
| 1344 | INIT_LIST_HEAD(&vpfe_dev->dma_queue); |
| 1345 | ret = videobuf_reqbufs(&vpfe_dev->buffer_queue, req_buf); |
| 1346 | unlock_out: |
| 1347 | mutex_unlock(&vpfe_dev->lock); |
| 1348 | return ret; |
| 1349 | } |
| 1350 | |
| 1351 | static int vpfe_querybuf(struct file *file, void *priv, |
| 1352 | struct v4l2_buffer *buf) |
| 1353 | { |
| 1354 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1355 | |
| 1356 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n"); |
| 1357 | |
| 1358 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) { |
| 1359 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1360 | return -EINVAL; |
| 1361 | } |
| 1362 | |
| 1363 | if (vpfe_dev->memory != V4L2_MEMORY_MMAP) { |
| 1364 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n"); |
| 1365 | return -EINVAL; |
| 1366 | } |
| 1367 | /* Call videobuf_querybuf to get information */ |
| 1368 | return videobuf_querybuf(&vpfe_dev->buffer_queue, buf); |
| 1369 | } |
| 1370 | |
| 1371 | static int vpfe_qbuf(struct file *file, void *priv, |
| 1372 | struct v4l2_buffer *p) |
| 1373 | { |
| 1374 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1375 | struct vpfe_fh *fh = file->private_data; |
| 1376 | |
| 1377 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n"); |
| 1378 | |
| 1379 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type) { |
| 1380 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1381 | return -EINVAL; |
| 1382 | } |
| 1383 | |
| 1384 | /* |
| 1385 | * If this file handle is not allowed to do IO, |
| 1386 | * return error |
| 1387 | */ |
| 1388 | if (!fh->io_allowed) { |
| 1389 | v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); |
| 1390 | return -EACCES; |
| 1391 | } |
| 1392 | return videobuf_qbuf(&vpfe_dev->buffer_queue, p); |
| 1393 | } |
| 1394 | |
| 1395 | static int vpfe_dqbuf(struct file *file, void *priv, |
| 1396 | struct v4l2_buffer *buf) |
| 1397 | { |
| 1398 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1399 | |
| 1400 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n"); |
| 1401 | |
| 1402 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) { |
| 1403 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1404 | return -EINVAL; |
| 1405 | } |
| 1406 | return videobuf_dqbuf(&vpfe_dev->buffer_queue, |
| 1407 | buf, file->f_flags & O_NONBLOCK); |
| 1408 | } |
| 1409 | |
Vaibhav Hiremath | d73bfc5 | 2009-11-10 13:12:25 -0300 | [diff] [blame] | 1410 | static int vpfe_queryctrl(struct file *file, void *priv, |
| 1411 | struct v4l2_queryctrl *qctrl) |
| 1412 | { |
| 1413 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1414 | struct vpfe_subdev_info *sdinfo; |
| 1415 | |
| 1416 | sdinfo = vpfe_dev->current_subdev; |
| 1417 | |
| 1418 | return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1419 | core, queryctrl, qctrl); |
| 1420 | |
| 1421 | } |
| 1422 | |
| 1423 | static int vpfe_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) |
| 1424 | { |
| 1425 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1426 | struct vpfe_subdev_info *sdinfo; |
| 1427 | |
| 1428 | sdinfo = vpfe_dev->current_subdev; |
| 1429 | |
| 1430 | return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1431 | core, g_ctrl, ctrl); |
| 1432 | } |
| 1433 | |
| 1434 | static int vpfe_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) |
| 1435 | { |
| 1436 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1437 | struct vpfe_subdev_info *sdinfo; |
| 1438 | |
| 1439 | sdinfo = vpfe_dev->current_subdev; |
| 1440 | |
| 1441 | return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1442 | core, s_ctrl, ctrl); |
| 1443 | } |
| 1444 | |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1445 | /* |
| 1446 | * vpfe_calculate_offsets : This function calculates buffers offset |
| 1447 | * for top and bottom field |
| 1448 | */ |
| 1449 | static void vpfe_calculate_offsets(struct vpfe_device *vpfe_dev) |
| 1450 | { |
| 1451 | struct v4l2_rect image_win; |
| 1452 | |
| 1453 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_calculate_offsets\n"); |
| 1454 | |
| 1455 | ccdc_dev->hw_ops.get_image_window(&image_win); |
| 1456 | vpfe_dev->field_off = image_win.height * image_win.width; |
| 1457 | } |
| 1458 | |
| 1459 | /* vpfe_start_ccdc_capture: start streaming in ccdc/isif */ |
| 1460 | static void vpfe_start_ccdc_capture(struct vpfe_device *vpfe_dev) |
| 1461 | { |
| 1462 | ccdc_dev->hw_ops.enable(1); |
| 1463 | if (ccdc_dev->hw_ops.enable_out_to_sdram) |
| 1464 | ccdc_dev->hw_ops.enable_out_to_sdram(1); |
| 1465 | vpfe_dev->started = 1; |
| 1466 | } |
| 1467 | |
| 1468 | /* |
| 1469 | * vpfe_streamon. Assume the DMA queue is not empty. |
| 1470 | * application is expected to call QBUF before calling |
| 1471 | * this ioctl. If not, driver returns error |
| 1472 | */ |
| 1473 | static int vpfe_streamon(struct file *file, void *priv, |
| 1474 | enum v4l2_buf_type buf_type) |
| 1475 | { |
| 1476 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1477 | struct vpfe_fh *fh = file->private_data; |
| 1478 | struct vpfe_subdev_info *sdinfo; |
| 1479 | unsigned long addr; |
| 1480 | int ret = 0; |
| 1481 | |
| 1482 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n"); |
| 1483 | |
| 1484 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) { |
| 1485 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1486 | return -EINVAL; |
| 1487 | } |
| 1488 | |
| 1489 | /* If file handle is not allowed IO, return error */ |
| 1490 | if (!fh->io_allowed) { |
| 1491 | v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); |
| 1492 | return -EACCES; |
| 1493 | } |
| 1494 | |
| 1495 | sdinfo = vpfe_dev->current_subdev; |
| 1496 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1497 | video, s_stream, 1); |
| 1498 | |
| 1499 | if (ret && (ret != -ENOIOCTLCMD)) { |
| 1500 | v4l2_err(&vpfe_dev->v4l2_dev, "stream on failed in subdev\n"); |
| 1501 | return -EINVAL; |
| 1502 | } |
| 1503 | |
| 1504 | /* If buffer queue is empty, return error */ |
| 1505 | if (list_empty(&vpfe_dev->buffer_queue.stream)) { |
| 1506 | v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n"); |
| 1507 | return -EIO; |
| 1508 | } |
| 1509 | |
| 1510 | /* Call videobuf_streamon to start streaming * in videobuf */ |
| 1511 | ret = videobuf_streamon(&vpfe_dev->buffer_queue); |
| 1512 | if (ret) |
| 1513 | return ret; |
| 1514 | |
| 1515 | |
| 1516 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1517 | if (ret) |
| 1518 | goto streamoff; |
| 1519 | /* Get the next frame from the buffer queue */ |
| 1520 | vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next, |
| 1521 | struct videobuf_buffer, queue); |
| 1522 | vpfe_dev->cur_frm = vpfe_dev->next_frm; |
| 1523 | /* Remove buffer from the buffer queue */ |
| 1524 | list_del(&vpfe_dev->cur_frm->queue); |
| 1525 | /* Mark state of the current frame to active */ |
| 1526 | vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE; |
| 1527 | /* Initialize field_id and started member */ |
| 1528 | vpfe_dev->field_id = 0; |
| 1529 | addr = videobuf_to_dma_contig(vpfe_dev->cur_frm); |
| 1530 | |
| 1531 | /* Calculate field offset */ |
| 1532 | vpfe_calculate_offsets(vpfe_dev); |
| 1533 | |
| 1534 | if (vpfe_attach_irq(vpfe_dev) < 0) { |
| 1535 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1536 | "Error in attaching interrupt handle\n"); |
| 1537 | ret = -EFAULT; |
| 1538 | goto unlock_out; |
| 1539 | } |
| 1540 | if (ccdc_dev->hw_ops.configure() < 0) { |
| 1541 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1542 | "Error in configuring ccdc\n"); |
| 1543 | ret = -EINVAL; |
| 1544 | goto unlock_out; |
| 1545 | } |
| 1546 | ccdc_dev->hw_ops.setfbaddr((unsigned long)(addr)); |
| 1547 | vpfe_start_ccdc_capture(vpfe_dev); |
| 1548 | mutex_unlock(&vpfe_dev->lock); |
| 1549 | return ret; |
| 1550 | unlock_out: |
| 1551 | mutex_unlock(&vpfe_dev->lock); |
| 1552 | streamoff: |
| 1553 | ret = videobuf_streamoff(&vpfe_dev->buffer_queue); |
| 1554 | return ret; |
| 1555 | } |
| 1556 | |
| 1557 | static int vpfe_streamoff(struct file *file, void *priv, |
| 1558 | enum v4l2_buf_type buf_type) |
| 1559 | { |
| 1560 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1561 | struct vpfe_fh *fh = file->private_data; |
| 1562 | struct vpfe_subdev_info *sdinfo; |
| 1563 | int ret = 0; |
| 1564 | |
| 1565 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n"); |
| 1566 | |
| 1567 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) { |
| 1568 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1569 | return -EINVAL; |
| 1570 | } |
| 1571 | |
| 1572 | /* If io is allowed for this file handle, return error */ |
| 1573 | if (!fh->io_allowed) { |
| 1574 | v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); |
| 1575 | return -EACCES; |
| 1576 | } |
| 1577 | |
| 1578 | /* If streaming is not started, return error */ |
| 1579 | if (!vpfe_dev->started) { |
| 1580 | v4l2_err(&vpfe_dev->v4l2_dev, "device started\n"); |
| 1581 | return -EINVAL; |
| 1582 | } |
| 1583 | |
| 1584 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1585 | if (ret) |
| 1586 | return ret; |
| 1587 | |
| 1588 | vpfe_stop_ccdc_capture(vpfe_dev); |
| 1589 | vpfe_detach_irq(vpfe_dev); |
| 1590 | |
| 1591 | sdinfo = vpfe_dev->current_subdev; |
| 1592 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 1593 | video, s_stream, 0); |
| 1594 | |
| 1595 | if (ret && (ret != -ENOIOCTLCMD)) |
| 1596 | v4l2_err(&vpfe_dev->v4l2_dev, "stream off failed in subdev\n"); |
| 1597 | ret = videobuf_streamoff(&vpfe_dev->buffer_queue); |
| 1598 | mutex_unlock(&vpfe_dev->lock); |
| 1599 | return ret; |
| 1600 | } |
| 1601 | |
| 1602 | static int vpfe_cropcap(struct file *file, void *priv, |
| 1603 | struct v4l2_cropcap *crop) |
| 1604 | { |
| 1605 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1606 | |
| 1607 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_cropcap\n"); |
| 1608 | |
Roel Kluin | 0b66cf9 | 2009-11-04 14:16:25 -0300 | [diff] [blame] | 1609 | if (vpfe_dev->std_index >= ARRAY_SIZE(vpfe_standards)) |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1610 | return -EINVAL; |
| 1611 | |
| 1612 | memset(crop, 0, sizeof(struct v4l2_cropcap)); |
| 1613 | crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1614 | crop->bounds.width = crop->defrect.width = |
| 1615 | vpfe_standards[vpfe_dev->std_index].width; |
| 1616 | crop->bounds.height = crop->defrect.height = |
| 1617 | vpfe_standards[vpfe_dev->std_index].height; |
| 1618 | crop->pixelaspect = vpfe_standards[vpfe_dev->std_index].pixelaspect; |
| 1619 | return 0; |
| 1620 | } |
| 1621 | |
| 1622 | static int vpfe_g_crop(struct file *file, void *priv, |
| 1623 | struct v4l2_crop *crop) |
| 1624 | { |
| 1625 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1626 | |
| 1627 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_crop\n"); |
| 1628 | |
| 1629 | crop->c = vpfe_dev->crop; |
| 1630 | return 0; |
| 1631 | } |
| 1632 | |
| 1633 | static int vpfe_s_crop(struct file *file, void *priv, |
| 1634 | struct v4l2_crop *crop) |
| 1635 | { |
| 1636 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1637 | int ret = 0; |
| 1638 | |
| 1639 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_crop\n"); |
| 1640 | |
| 1641 | if (vpfe_dev->started) { |
| 1642 | /* make sure streaming is not started */ |
| 1643 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1644 | "Cannot change crop when streaming is ON\n"); |
| 1645 | return -EBUSY; |
| 1646 | } |
| 1647 | |
| 1648 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1649 | if (ret) |
| 1650 | return ret; |
| 1651 | |
| 1652 | if (crop->c.top < 0 || crop->c.left < 0) { |
| 1653 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1654 | "doesn't support negative values for top & left\n"); |
| 1655 | ret = -EINVAL; |
| 1656 | goto unlock_out; |
| 1657 | } |
| 1658 | |
| 1659 | /* adjust the width to 16 pixel boundry */ |
| 1660 | crop->c.width = ((crop->c.width + 15) & ~0xf); |
| 1661 | |
| 1662 | /* make sure parameters are valid */ |
| 1663 | if ((crop->c.left + crop->c.width > |
| 1664 | vpfe_dev->std_info.active_pixels) || |
| 1665 | (crop->c.top + crop->c.height > |
| 1666 | vpfe_dev->std_info.active_lines)) { |
| 1667 | v4l2_err(&vpfe_dev->v4l2_dev, "Error in S_CROP params\n"); |
| 1668 | ret = -EINVAL; |
| 1669 | goto unlock_out; |
| 1670 | } |
| 1671 | ccdc_dev->hw_ops.set_image_window(&crop->c); |
| 1672 | vpfe_dev->fmt.fmt.pix.width = crop->c.width; |
| 1673 | vpfe_dev->fmt.fmt.pix.height = crop->c.height; |
| 1674 | vpfe_dev->fmt.fmt.pix.bytesperline = |
| 1675 | ccdc_dev->hw_ops.get_line_length(); |
| 1676 | vpfe_dev->fmt.fmt.pix.sizeimage = |
| 1677 | vpfe_dev->fmt.fmt.pix.bytesperline * |
| 1678 | vpfe_dev->fmt.fmt.pix.height; |
| 1679 | vpfe_dev->crop = crop->c; |
| 1680 | unlock_out: |
| 1681 | mutex_unlock(&vpfe_dev->lock); |
| 1682 | return ret; |
| 1683 | } |
| 1684 | |
| 1685 | |
| 1686 | static long vpfe_param_handler(struct file *file, void *priv, |
| 1687 | int cmd, void *param) |
| 1688 | { |
| 1689 | struct vpfe_device *vpfe_dev = video_drvdata(file); |
| 1690 | int ret = 0; |
| 1691 | |
| 1692 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_param_handler\n"); |
| 1693 | |
| 1694 | if (vpfe_dev->started) { |
| 1695 | /* only allowed if streaming is not started */ |
| 1696 | v4l2_err(&vpfe_dev->v4l2_dev, "device already started\n"); |
| 1697 | return -EBUSY; |
| 1698 | } |
| 1699 | |
| 1700 | ret = mutex_lock_interruptible(&vpfe_dev->lock); |
| 1701 | if (ret) |
| 1702 | return ret; |
| 1703 | |
| 1704 | switch (cmd) { |
| 1705 | case VPFE_CMD_S_CCDC_RAW_PARAMS: |
| 1706 | v4l2_warn(&vpfe_dev->v4l2_dev, |
| 1707 | "VPFE_CMD_S_CCDC_RAW_PARAMS: experimental ioctl\n"); |
| 1708 | ret = ccdc_dev->hw_ops.set_params(param); |
| 1709 | if (ret) { |
| 1710 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1711 | "Error in setting parameters in CCDC\n"); |
| 1712 | goto unlock_out; |
| 1713 | } |
| 1714 | if (vpfe_get_ccdc_image_format(vpfe_dev, &vpfe_dev->fmt) < 0) { |
| 1715 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1716 | "Invalid image format at CCDC\n"); |
| 1717 | goto unlock_out; |
| 1718 | } |
| 1719 | break; |
| 1720 | default: |
| 1721 | ret = -EINVAL; |
| 1722 | } |
| 1723 | unlock_out: |
| 1724 | mutex_unlock(&vpfe_dev->lock); |
| 1725 | return ret; |
| 1726 | } |
| 1727 | |
| 1728 | |
| 1729 | /* vpfe capture ioctl operations */ |
| 1730 | static const struct v4l2_ioctl_ops vpfe_ioctl_ops = { |
| 1731 | .vidioc_querycap = vpfe_querycap, |
| 1732 | .vidioc_g_fmt_vid_cap = vpfe_g_fmt_vid_cap, |
| 1733 | .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt_vid_cap, |
| 1734 | .vidioc_s_fmt_vid_cap = vpfe_s_fmt_vid_cap, |
| 1735 | .vidioc_try_fmt_vid_cap = vpfe_try_fmt_vid_cap, |
| 1736 | .vidioc_enum_input = vpfe_enum_input, |
| 1737 | .vidioc_g_input = vpfe_g_input, |
| 1738 | .vidioc_s_input = vpfe_s_input, |
| 1739 | .vidioc_querystd = vpfe_querystd, |
| 1740 | .vidioc_s_std = vpfe_s_std, |
| 1741 | .vidioc_g_std = vpfe_g_std, |
Vaibhav Hiremath | d73bfc5 | 2009-11-10 13:12:25 -0300 | [diff] [blame] | 1742 | .vidioc_queryctrl = vpfe_queryctrl, |
| 1743 | .vidioc_g_ctrl = vpfe_g_ctrl, |
| 1744 | .vidioc_s_ctrl = vpfe_s_ctrl, |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1745 | .vidioc_reqbufs = vpfe_reqbufs, |
| 1746 | .vidioc_querybuf = vpfe_querybuf, |
| 1747 | .vidioc_qbuf = vpfe_qbuf, |
| 1748 | .vidioc_dqbuf = vpfe_dqbuf, |
| 1749 | .vidioc_streamon = vpfe_streamon, |
| 1750 | .vidioc_streamoff = vpfe_streamoff, |
| 1751 | .vidioc_cropcap = vpfe_cropcap, |
| 1752 | .vidioc_g_crop = vpfe_g_crop, |
| 1753 | .vidioc_s_crop = vpfe_s_crop, |
| 1754 | .vidioc_default = vpfe_param_handler, |
| 1755 | }; |
| 1756 | |
| 1757 | static struct vpfe_device *vpfe_initialize(void) |
| 1758 | { |
| 1759 | struct vpfe_device *vpfe_dev; |
| 1760 | |
| 1761 | /* Default number of buffers should be 3 */ |
| 1762 | if ((numbuffers > 0) && |
| 1763 | (numbuffers < config_params.min_numbuffers)) |
| 1764 | numbuffers = config_params.min_numbuffers; |
| 1765 | |
| 1766 | /* |
| 1767 | * Set buffer size to min buffers size if invalid buffer size is |
| 1768 | * given |
| 1769 | */ |
| 1770 | if (bufsize < config_params.min_bufsize) |
| 1771 | bufsize = config_params.min_bufsize; |
| 1772 | |
| 1773 | config_params.numbuffers = numbuffers; |
| 1774 | |
| 1775 | if (numbuffers) |
| 1776 | config_params.device_bufsize = bufsize; |
| 1777 | |
| 1778 | /* Allocate memory for device objects */ |
| 1779 | vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL); |
| 1780 | |
| 1781 | return vpfe_dev; |
| 1782 | } |
| 1783 | |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1784 | /* |
| 1785 | * vpfe_probe : This function creates device entries by register |
| 1786 | * itself to the V4L2 driver and initializes fields of each |
| 1787 | * device objects |
| 1788 | */ |
| 1789 | static __init int vpfe_probe(struct platform_device *pdev) |
| 1790 | { |
| 1791 | struct vpfe_subdev_info *sdinfo; |
| 1792 | struct vpfe_config *vpfe_cfg; |
| 1793 | struct resource *res1; |
| 1794 | struct vpfe_device *vpfe_dev; |
| 1795 | struct i2c_adapter *i2c_adap; |
| 1796 | struct video_device *vfd; |
| 1797 | int ret = -ENOMEM, i, j; |
| 1798 | int num_subdevs = 0; |
| 1799 | |
| 1800 | /* Get the pointer to the device object */ |
| 1801 | vpfe_dev = vpfe_initialize(); |
| 1802 | |
| 1803 | if (!vpfe_dev) { |
| 1804 | v4l2_err(pdev->dev.driver, |
| 1805 | "Failed to allocate memory for vpfe_dev\n"); |
| 1806 | return ret; |
| 1807 | } |
| 1808 | |
| 1809 | vpfe_dev->pdev = &pdev->dev; |
| 1810 | |
| 1811 | if (NULL == pdev->dev.platform_data) { |
| 1812 | v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n"); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1813 | ret = -ENODEV; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1814 | goto probe_free_dev_mem; |
| 1815 | } |
| 1816 | |
| 1817 | vpfe_cfg = pdev->dev.platform_data; |
| 1818 | vpfe_dev->cfg = vpfe_cfg; |
| 1819 | if (NULL == vpfe_cfg->ccdc || |
| 1820 | NULL == vpfe_cfg->card_name || |
| 1821 | NULL == vpfe_cfg->sub_devs) { |
| 1822 | v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n"); |
| 1823 | ret = -ENOENT; |
| 1824 | goto probe_free_dev_mem; |
| 1825 | } |
| 1826 | |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1827 | mutex_lock(&ccdc_lock); |
| 1828 | /* Allocate memory for ccdc configuration */ |
| 1829 | ccdc_cfg = kmalloc(sizeof(struct ccdc_config), GFP_KERNEL); |
| 1830 | if (NULL == ccdc_cfg) { |
| 1831 | v4l2_err(pdev->dev.driver, |
| 1832 | "Memory allocation failed for ccdc_cfg\n"); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1833 | goto probe_free_dev_mem; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1834 | } |
| 1835 | |
| 1836 | strncpy(ccdc_cfg->name, vpfe_cfg->ccdc, 32); |
| 1837 | /* Get VINT0 irq resource */ |
| 1838 | res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 1839 | if (!res1) { |
| 1840 | v4l2_err(pdev->dev.driver, |
| 1841 | "Unable to get interrupt for VINT0\n"); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1842 | ret = -ENODEV; |
| 1843 | goto probe_free_ccdc_cfg_mem; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1844 | } |
| 1845 | vpfe_dev->ccdc_irq0 = res1->start; |
| 1846 | |
| 1847 | /* Get VINT1 irq resource */ |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1848 | res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1); |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1849 | if (!res1) { |
| 1850 | v4l2_err(pdev->dev.driver, |
| 1851 | "Unable to get interrupt for VINT1\n"); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1852 | ret = -ENODEV; |
| 1853 | goto probe_free_ccdc_cfg_mem; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1854 | } |
| 1855 | vpfe_dev->ccdc_irq1 = res1->start; |
| 1856 | |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1857 | ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, IRQF_DISABLED, |
| 1858 | "vpfe_capture0", vpfe_dev); |
| 1859 | |
| 1860 | if (0 != ret) { |
| 1861 | v4l2_err(pdev->dev.driver, "Unable to request interrupt\n"); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1862 | goto probe_free_ccdc_cfg_mem; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1863 | } |
| 1864 | |
| 1865 | /* Allocate memory for video device */ |
| 1866 | vfd = video_device_alloc(); |
| 1867 | if (NULL == vfd) { |
| 1868 | ret = -ENOMEM; |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1869 | v4l2_err(pdev->dev.driver, "Unable to alloc video device\n"); |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1870 | goto probe_out_release_irq; |
| 1871 | } |
| 1872 | |
| 1873 | /* Initialize field of video device */ |
| 1874 | vfd->release = video_device_release; |
| 1875 | vfd->fops = &vpfe_fops; |
| 1876 | vfd->ioctl_ops = &vpfe_ioctl_ops; |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1877 | vfd->tvnorms = 0; |
| 1878 | vfd->current_norm = V4L2_STD_PAL; |
| 1879 | vfd->v4l2_dev = &vpfe_dev->v4l2_dev; |
| 1880 | snprintf(vfd->name, sizeof(vfd->name), |
| 1881 | "%s_V%d.%d.%d", |
| 1882 | CAPTURE_DRV_NAME, |
| 1883 | (VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff, |
| 1884 | (VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff, |
| 1885 | (VPFE_CAPTURE_VERSION_CODE) & 0xff); |
| 1886 | /* Set video_dev to the video device */ |
| 1887 | vpfe_dev->video_dev = vfd; |
| 1888 | |
| 1889 | ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev); |
| 1890 | if (ret) { |
| 1891 | v4l2_err(pdev->dev.driver, |
| 1892 | "Unable to register v4l2 device.\n"); |
| 1893 | goto probe_out_video_release; |
| 1894 | } |
| 1895 | v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n"); |
| 1896 | spin_lock_init(&vpfe_dev->irqlock); |
| 1897 | spin_lock_init(&vpfe_dev->dma_queue_lock); |
| 1898 | mutex_init(&vpfe_dev->lock); |
| 1899 | |
| 1900 | /* Initialize field of the device objects */ |
| 1901 | vpfe_dev->numbuffers = config_params.numbuffers; |
| 1902 | |
| 1903 | /* Initialize prio member of device object */ |
| 1904 | v4l2_prio_init(&vpfe_dev->prio); |
| 1905 | /* register video device */ |
| 1906 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, |
| 1907 | "trying to register vpfe device.\n"); |
| 1908 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, |
| 1909 | "video_dev=%x\n", (int)&vpfe_dev->video_dev); |
| 1910 | vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1911 | ret = video_register_device(vpfe_dev->video_dev, |
| 1912 | VFL_TYPE_GRABBER, -1); |
| 1913 | |
| 1914 | if (ret) { |
| 1915 | v4l2_err(pdev->dev.driver, |
| 1916 | "Unable to register video device.\n"); |
| 1917 | goto probe_out_v4l2_unregister; |
| 1918 | } |
| 1919 | |
| 1920 | v4l2_info(&vpfe_dev->v4l2_dev, "video device registered\n"); |
| 1921 | /* set the driver data in platform device */ |
| 1922 | platform_set_drvdata(pdev, vpfe_dev); |
| 1923 | /* set driver private data */ |
| 1924 | video_set_drvdata(vpfe_dev->video_dev, vpfe_dev); |
Vaibhav Hiremath | 14cbaaf | 2009-11-09 09:14:16 -0300 | [diff] [blame] | 1925 | i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id); |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1926 | num_subdevs = vpfe_cfg->num_subdevs; |
| 1927 | vpfe_dev->sd = kmalloc(sizeof(struct v4l2_subdev *) * num_subdevs, |
| 1928 | GFP_KERNEL); |
| 1929 | if (NULL == vpfe_dev->sd) { |
| 1930 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 1931 | "unable to allocate memory for subdevice pointers\n"); |
| 1932 | ret = -ENOMEM; |
| 1933 | goto probe_out_video_unregister; |
| 1934 | } |
| 1935 | |
| 1936 | for (i = 0; i < num_subdevs; i++) { |
| 1937 | struct v4l2_input *inps; |
| 1938 | |
| 1939 | sdinfo = &vpfe_cfg->sub_devs[i]; |
| 1940 | |
| 1941 | /* Load up the subdevice */ |
| 1942 | vpfe_dev->sd[i] = |
| 1943 | v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev, |
| 1944 | i2c_adap, |
| 1945 | sdinfo->name, |
| 1946 | &sdinfo->board_info, |
| 1947 | NULL); |
| 1948 | if (vpfe_dev->sd[i]) { |
| 1949 | v4l2_info(&vpfe_dev->v4l2_dev, |
| 1950 | "v4l2 sub device %s registered\n", |
| 1951 | sdinfo->name); |
| 1952 | vpfe_dev->sd[i]->grp_id = sdinfo->grp_id; |
| 1953 | /* update tvnorms from the sub devices */ |
| 1954 | for (j = 0; j < sdinfo->num_inputs; j++) { |
| 1955 | inps = &sdinfo->inputs[j]; |
| 1956 | vfd->tvnorms |= inps->std; |
| 1957 | } |
| 1958 | } else { |
| 1959 | v4l2_info(&vpfe_dev->v4l2_dev, |
| 1960 | "v4l2 sub device %s register fails\n", |
| 1961 | sdinfo->name); |
| 1962 | goto probe_sd_out; |
| 1963 | } |
| 1964 | } |
| 1965 | |
| 1966 | /* set first sub device as current one */ |
| 1967 | vpfe_dev->current_subdev = &vpfe_cfg->sub_devs[0]; |
| 1968 | |
| 1969 | /* We have at least one sub device to work with */ |
| 1970 | mutex_unlock(&ccdc_lock); |
| 1971 | return 0; |
| 1972 | |
| 1973 | probe_sd_out: |
| 1974 | kfree(vpfe_dev->sd); |
| 1975 | probe_out_video_unregister: |
| 1976 | video_unregister_device(vpfe_dev->video_dev); |
| 1977 | probe_out_v4l2_unregister: |
| 1978 | v4l2_device_unregister(&vpfe_dev->v4l2_dev); |
| 1979 | probe_out_video_release: |
Laurent Pinchart | f0813b4 | 2009-11-27 13:57:30 -0300 | [diff] [blame] | 1980 | if (!video_is_registered(vpfe_dev->video_dev)) |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1981 | video_device_release(vpfe_dev->video_dev); |
| 1982 | probe_out_release_irq: |
| 1983 | free_irq(vpfe_dev->ccdc_irq0, vpfe_dev); |
Muralidharan Karicheri | 51444ea | 2010-01-13 20:27:05 -0300 | [diff] [blame] | 1984 | probe_free_ccdc_cfg_mem: |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1985 | mutex_unlock(&ccdc_lock); |
| 1986 | kfree(ccdc_cfg); |
| 1987 | probe_free_dev_mem: |
| 1988 | kfree(vpfe_dev); |
| 1989 | return ret; |
| 1990 | } |
| 1991 | |
| 1992 | /* |
| 1993 | * vpfe_remove : It un-register device from V4L2 driver |
| 1994 | */ |
Uwe Kleine-König | 9d89382 | 2009-12-10 17:01:13 -0300 | [diff] [blame] | 1995 | static int __devexit vpfe_remove(struct platform_device *pdev) |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1996 | { |
| 1997 | struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev); |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 1998 | |
| 1999 | v4l2_info(pdev->dev.driver, "vpfe_remove\n"); |
| 2000 | |
| 2001 | free_irq(vpfe_dev->ccdc_irq0, vpfe_dev); |
| 2002 | kfree(vpfe_dev->sd); |
| 2003 | v4l2_device_unregister(&vpfe_dev->v4l2_dev); |
| 2004 | video_unregister_device(vpfe_dev->video_dev); |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 2005 | kfree(vpfe_dev); |
| 2006 | kfree(ccdc_cfg); |
| 2007 | return 0; |
| 2008 | } |
| 2009 | |
| 2010 | static int |
| 2011 | vpfe_suspend(struct device *dev) |
| 2012 | { |
| 2013 | /* add suspend code here later */ |
| 2014 | return -1; |
| 2015 | } |
| 2016 | |
| 2017 | static int |
| 2018 | vpfe_resume(struct device *dev) |
| 2019 | { |
| 2020 | /* add resume code here later */ |
| 2021 | return -1; |
| 2022 | } |
| 2023 | |
Alexey Dobriyan | 4714521 | 2009-12-14 18:00:08 -0800 | [diff] [blame] | 2024 | static const struct dev_pm_ops vpfe_dev_pm_ops = { |
Muralidharan Karicheri | 7da8a6c | 2009-07-06 15:04:12 -0300 | [diff] [blame] | 2025 | .suspend = vpfe_suspend, |
| 2026 | .resume = vpfe_resume, |
| 2027 | }; |
| 2028 | |
| 2029 | static struct platform_driver vpfe_driver = { |
| 2030 | .driver = { |
| 2031 | .name = CAPTURE_DRV_NAME, |
| 2032 | .owner = THIS_MODULE, |
| 2033 | .pm = &vpfe_dev_pm_ops, |
| 2034 | }, |
| 2035 | .probe = vpfe_probe, |
| 2036 | .remove = __devexit_p(vpfe_remove), |
| 2037 | }; |
| 2038 | |
| 2039 | static __init int vpfe_init(void) |
| 2040 | { |
| 2041 | printk(KERN_NOTICE "vpfe_init\n"); |
| 2042 | /* Register driver to the kernel */ |
| 2043 | return platform_driver_register(&vpfe_driver); |
| 2044 | } |
| 2045 | |
| 2046 | /* |
| 2047 | * vpfe_cleanup : This function un-registers device driver |
| 2048 | */ |
| 2049 | static void vpfe_cleanup(void) |
| 2050 | { |
| 2051 | platform_driver_unregister(&vpfe_driver); |
| 2052 | } |
| 2053 | |
| 2054 | module_init(vpfe_init); |
| 2055 | module_exit(vpfe_cleanup); |