Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1 | /* |
| 2 | * ispvideo.c |
| 3 | * |
| 4 | * TI OMAP3 ISP - Generic video node |
| 5 | * |
| 6 | * Copyright (C) 2009-2010 Nokia Corporation |
| 7 | * |
| 8 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| 9 | * Sakari Ailus <sakari.ailus@iki.fi> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, but |
| 16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 23 | * 02110-1301 USA |
| 24 | */ |
| 25 | |
| 26 | #include <asm/cacheflush.h> |
| 27 | #include <linux/clk.h> |
| 28 | #include <linux/mm.h> |
| 29 | #include <linux/pagemap.h> |
| 30 | #include <linux/scatterlist.h> |
| 31 | #include <linux/sched.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/vmalloc.h> |
| 34 | #include <media/v4l2-dev.h> |
| 35 | #include <media/v4l2-ioctl.h> |
| 36 | #include <plat/iommu.h> |
| 37 | #include <plat/iovmm.h> |
| 38 | #include <plat/omap-pm.h> |
| 39 | |
| 40 | #include "ispvideo.h" |
| 41 | #include "isp.h" |
| 42 | |
| 43 | |
| 44 | /* ----------------------------------------------------------------------------- |
| 45 | * Helper functions |
| 46 | */ |
| 47 | |
| 48 | static struct isp_format_info formats[] = { |
| 49 | { V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y8_1X8, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 50 | V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y8_1X8, |
| 51 | V4L2_PIX_FMT_GREY, 8, }, |
Michael Jones | 5782f97 | 2011-03-29 05:19:08 -0300 | [diff] [blame] | 52 | { V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_Y10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 53 | V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_Y8_1X8, |
| 54 | V4L2_PIX_FMT_Y10, 10, }, |
Michael Jones | 5782f97 | 2011-03-29 05:19:08 -0300 | [diff] [blame] | 55 | { V4L2_MBUS_FMT_Y12_1X12, V4L2_MBUS_FMT_Y10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 56 | V4L2_MBUS_FMT_Y12_1X12, V4L2_MBUS_FMT_Y8_1X8, |
| 57 | V4L2_PIX_FMT_Y12, 12, }, |
Michael Jones | 5782f97 | 2011-03-29 05:19:08 -0300 | [diff] [blame] | 58 | { V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SBGGR8_1X8, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 59 | V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SBGGR8_1X8, |
| 60 | V4L2_PIX_FMT_SBGGR8, 8, }, |
Michael Jones | 5782f97 | 2011-03-29 05:19:08 -0300 | [diff] [blame] | 61 | { V4L2_MBUS_FMT_SGBRG8_1X8, V4L2_MBUS_FMT_SGBRG8_1X8, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 62 | V4L2_MBUS_FMT_SGBRG8_1X8, V4L2_MBUS_FMT_SGBRG8_1X8, |
| 63 | V4L2_PIX_FMT_SGBRG8, 8, }, |
Michael Jones | 5782f97 | 2011-03-29 05:19:08 -0300 | [diff] [blame] | 64 | { V4L2_MBUS_FMT_SGRBG8_1X8, V4L2_MBUS_FMT_SGRBG8_1X8, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 65 | V4L2_MBUS_FMT_SGRBG8_1X8, V4L2_MBUS_FMT_SGRBG8_1X8, |
| 66 | V4L2_PIX_FMT_SGRBG8, 8, }, |
Michael Jones | 5782f97 | 2011-03-29 05:19:08 -0300 | [diff] [blame] | 67 | { V4L2_MBUS_FMT_SRGGB8_1X8, V4L2_MBUS_FMT_SRGGB8_1X8, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 68 | V4L2_MBUS_FMT_SRGGB8_1X8, V4L2_MBUS_FMT_SRGGB8_1X8, |
| 69 | V4L2_PIX_FMT_SRGGB8, 8, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 70 | { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 71 | V4L2_MBUS_FMT_SGRBG10_1X10, 0, |
| 72 | V4L2_PIX_FMT_SGRBG10DPCM8, 8, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 73 | { V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SBGGR10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 74 | V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SBGGR8_1X8, |
| 75 | V4L2_PIX_FMT_SBGGR10, 10, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 76 | { V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_MBUS_FMT_SGBRG10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 77 | V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_MBUS_FMT_SGBRG8_1X8, |
| 78 | V4L2_PIX_FMT_SGBRG10, 10, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 79 | { V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 80 | V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG8_1X8, |
| 81 | V4L2_PIX_FMT_SGRBG10, 10, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 82 | { V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SRGGB10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 83 | V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SRGGB8_1X8, |
| 84 | V4L2_PIX_FMT_SRGGB10, 10, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 85 | { V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_MBUS_FMT_SBGGR10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 86 | V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_MBUS_FMT_SBGGR8_1X8, |
| 87 | V4L2_PIX_FMT_SBGGR12, 12, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 88 | { V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_MBUS_FMT_SGBRG10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 89 | V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_MBUS_FMT_SGBRG8_1X8, |
| 90 | V4L2_PIX_FMT_SGBRG12, 12, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 91 | { V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_MBUS_FMT_SGRBG10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 92 | V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_MBUS_FMT_SGRBG8_1X8, |
| 93 | V4L2_PIX_FMT_SGRBG12, 12, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 94 | { V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_MBUS_FMT_SRGGB10_1X10, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 95 | V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_MBUS_FMT_SRGGB8_1X8, |
| 96 | V4L2_PIX_FMT_SRGGB12, 12, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 97 | { V4L2_MBUS_FMT_UYVY8_1X16, V4L2_MBUS_FMT_UYVY8_1X16, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 98 | V4L2_MBUS_FMT_UYVY8_1X16, 0, |
| 99 | V4L2_PIX_FMT_UYVY, 16, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 100 | { V4L2_MBUS_FMT_YUYV8_1X16, V4L2_MBUS_FMT_YUYV8_1X16, |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 101 | V4L2_MBUS_FMT_YUYV8_1X16, 0, |
| 102 | V4L2_PIX_FMT_YUYV, 16, }, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 103 | }; |
| 104 | |
| 105 | const struct isp_format_info * |
| 106 | omap3isp_video_format_info(enum v4l2_mbus_pixelcode code) |
| 107 | { |
| 108 | unsigned int i; |
| 109 | |
| 110 | for (i = 0; i < ARRAY_SIZE(formats); ++i) { |
| 111 | if (formats[i].code == code) |
| 112 | return &formats[i]; |
| 113 | } |
| 114 | |
| 115 | return NULL; |
| 116 | } |
| 117 | |
| 118 | /* |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 119 | * Decide whether desired output pixel code can be obtained with |
| 120 | * the lane shifter by shifting the input pixel code. |
| 121 | * @in: input pixelcode to shifter |
| 122 | * @out: output pixelcode from shifter |
| 123 | * @additional_shift: # of bits the sensor's LSB is offset from CAMEXT[0] |
| 124 | * |
| 125 | * return true if the combination is possible |
| 126 | * return false otherwise |
| 127 | */ |
| 128 | static bool isp_video_is_shiftable(enum v4l2_mbus_pixelcode in, |
| 129 | enum v4l2_mbus_pixelcode out, |
| 130 | unsigned int additional_shift) |
| 131 | { |
| 132 | const struct isp_format_info *in_info, *out_info; |
| 133 | |
| 134 | if (in == out) |
| 135 | return true; |
| 136 | |
| 137 | in_info = omap3isp_video_format_info(in); |
| 138 | out_info = omap3isp_video_format_info(out); |
| 139 | |
| 140 | if ((in_info->flavor == 0) || (out_info->flavor == 0)) |
| 141 | return false; |
| 142 | |
| 143 | if (in_info->flavor != out_info->flavor) |
| 144 | return false; |
| 145 | |
| 146 | return in_info->bpp - out_info->bpp + additional_shift <= 6; |
| 147 | } |
| 148 | |
| 149 | /* |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 150 | * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format |
| 151 | * @video: ISP video instance |
| 152 | * @mbus: v4l2_mbus_framefmt format (input) |
| 153 | * @pix: v4l2_pix_format format (output) |
| 154 | * |
| 155 | * Fill the output pix structure with information from the input mbus format. |
| 156 | * The bytesperline and sizeimage fields are computed from the requested bytes |
| 157 | * per line value in the pix format and information from the video instance. |
| 158 | * |
| 159 | * Return the number of padding bytes at end of line. |
| 160 | */ |
| 161 | static unsigned int isp_video_mbus_to_pix(const struct isp_video *video, |
| 162 | const struct v4l2_mbus_framefmt *mbus, |
| 163 | struct v4l2_pix_format *pix) |
| 164 | { |
| 165 | unsigned int bpl = pix->bytesperline; |
| 166 | unsigned int min_bpl; |
| 167 | unsigned int i; |
| 168 | |
| 169 | memset(pix, 0, sizeof(*pix)); |
| 170 | pix->width = mbus->width; |
| 171 | pix->height = mbus->height; |
| 172 | |
| 173 | for (i = 0; i < ARRAY_SIZE(formats); ++i) { |
| 174 | if (formats[i].code == mbus->code) |
| 175 | break; |
| 176 | } |
| 177 | |
| 178 | if (WARN_ON(i == ARRAY_SIZE(formats))) |
| 179 | return 0; |
| 180 | |
| 181 | min_bpl = pix->width * ALIGN(formats[i].bpp, 8) / 8; |
| 182 | |
| 183 | /* Clamp the requested bytes per line value. If the maximum bytes per |
| 184 | * line value is zero, the module doesn't support user configurable line |
| 185 | * sizes. Override the requested value with the minimum in that case. |
| 186 | */ |
| 187 | if (video->bpl_max) |
| 188 | bpl = clamp(bpl, min_bpl, video->bpl_max); |
| 189 | else |
| 190 | bpl = min_bpl; |
| 191 | |
| 192 | if (!video->bpl_zero_padding || bpl != min_bpl) |
| 193 | bpl = ALIGN(bpl, video->bpl_alignment); |
| 194 | |
| 195 | pix->pixelformat = formats[i].pixelformat; |
| 196 | pix->bytesperline = bpl; |
| 197 | pix->sizeimage = pix->bytesperline * pix->height; |
| 198 | pix->colorspace = mbus->colorspace; |
| 199 | pix->field = mbus->field; |
| 200 | |
| 201 | return bpl - min_bpl; |
| 202 | } |
| 203 | |
| 204 | static void isp_video_pix_to_mbus(const struct v4l2_pix_format *pix, |
| 205 | struct v4l2_mbus_framefmt *mbus) |
| 206 | { |
| 207 | unsigned int i; |
| 208 | |
| 209 | memset(mbus, 0, sizeof(*mbus)); |
| 210 | mbus->width = pix->width; |
| 211 | mbus->height = pix->height; |
| 212 | |
| 213 | for (i = 0; i < ARRAY_SIZE(formats); ++i) { |
| 214 | if (formats[i].pixelformat == pix->pixelformat) |
| 215 | break; |
| 216 | } |
| 217 | |
| 218 | if (WARN_ON(i == ARRAY_SIZE(formats))) |
| 219 | return; |
| 220 | |
| 221 | mbus->code = formats[i].code; |
| 222 | mbus->colorspace = pix->colorspace; |
| 223 | mbus->field = pix->field; |
| 224 | } |
| 225 | |
| 226 | static struct v4l2_subdev * |
| 227 | isp_video_remote_subdev(struct isp_video *video, u32 *pad) |
| 228 | { |
| 229 | struct media_pad *remote; |
| 230 | |
| 231 | remote = media_entity_remote_source(&video->pad); |
| 232 | |
| 233 | if (remote == NULL || |
| 234 | media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
| 235 | return NULL; |
| 236 | |
| 237 | if (pad) |
| 238 | *pad = remote->index; |
| 239 | |
| 240 | return media_entity_to_v4l2_subdev(remote->entity); |
| 241 | } |
| 242 | |
| 243 | /* Return a pointer to the ISP video instance at the far end of the pipeline. */ |
| 244 | static struct isp_video * |
| 245 | isp_video_far_end(struct isp_video *video) |
| 246 | { |
| 247 | struct media_entity_graph graph; |
| 248 | struct media_entity *entity = &video->video.entity; |
| 249 | struct media_device *mdev = entity->parent; |
| 250 | struct isp_video *far_end = NULL; |
| 251 | |
| 252 | mutex_lock(&mdev->graph_mutex); |
| 253 | media_entity_graph_walk_start(&graph, entity); |
| 254 | |
| 255 | while ((entity = media_entity_graph_walk_next(&graph))) { |
| 256 | if (entity == &video->video.entity) |
| 257 | continue; |
| 258 | |
| 259 | if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) |
| 260 | continue; |
| 261 | |
| 262 | far_end = to_isp_video(media_entity_to_video_device(entity)); |
| 263 | if (far_end->type != video->type) |
| 264 | break; |
| 265 | |
| 266 | far_end = NULL; |
| 267 | } |
| 268 | |
| 269 | mutex_unlock(&mdev->graph_mutex); |
| 270 | return far_end; |
| 271 | } |
| 272 | |
| 273 | /* |
| 274 | * Validate a pipeline by checking both ends of all links for format |
| 275 | * discrepancies. |
| 276 | * |
| 277 | * Compute the minimum time per frame value as the maximum of time per frame |
| 278 | * limits reported by every block in the pipeline. |
| 279 | * |
| 280 | * Return 0 if all formats match, or -EPIPE if at least one link is found with |
Laurent Pinchart | 00542ed | 2011-07-31 17:12:02 +0200 | [diff] [blame] | 281 | * different formats on its two ends or if the pipeline doesn't start with a |
| 282 | * video source (either a subdev with no input pad, or a non-subdev entity). |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 283 | */ |
| 284 | static int isp_video_validate_pipeline(struct isp_pipeline *pipe) |
| 285 | { |
| 286 | struct isp_device *isp = pipe->output->isp; |
| 287 | struct v4l2_subdev_format fmt_source; |
| 288 | struct v4l2_subdev_format fmt_sink; |
| 289 | struct media_pad *pad; |
| 290 | struct v4l2_subdev *subdev; |
| 291 | int ret; |
| 292 | |
| 293 | pipe->max_rate = pipe->l3_ick; |
| 294 | |
| 295 | subdev = isp_video_remote_subdev(pipe->output, NULL); |
| 296 | if (subdev == NULL) |
| 297 | return -EPIPE; |
| 298 | |
| 299 | while (1) { |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 300 | unsigned int shifter_link; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 301 | /* Retrieve the sink format */ |
| 302 | pad = &subdev->entity.pads[0]; |
| 303 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) |
| 304 | break; |
| 305 | |
| 306 | fmt_sink.pad = pad->index; |
| 307 | fmt_sink.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 308 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_sink); |
| 309 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 310 | return -EPIPE; |
| 311 | |
| 312 | /* Update the maximum frame rate */ |
| 313 | if (subdev == &isp->isp_res.subdev) |
| 314 | omap3isp_resizer_max_rate(&isp->isp_res, |
| 315 | &pipe->max_rate); |
| 316 | |
| 317 | /* Check ccdc maximum data rate when data comes from sensor |
| 318 | * TODO: Include ccdc rate in pipe->max_rate and compare the |
| 319 | * total pipe rate with the input data rate from sensor. |
| 320 | */ |
| 321 | if (subdev == &isp->isp_ccdc.subdev && pipe->input == NULL) { |
| 322 | unsigned int rate = UINT_MAX; |
| 323 | |
| 324 | omap3isp_ccdc_max_rate(&isp->isp_ccdc, &rate); |
| 325 | if (isp->isp_ccdc.vpcfg.pixelclk > rate) |
| 326 | return -ENOSPC; |
| 327 | } |
| 328 | |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 329 | /* If sink pad is on CCDC, the link has the lane shifter |
| 330 | * in the middle of it. */ |
| 331 | shifter_link = subdev == &isp->isp_ccdc.subdev; |
| 332 | |
Laurent Pinchart | 00542ed | 2011-07-31 17:12:02 +0200 | [diff] [blame] | 333 | /* Retrieve the source format. Return an error if no source |
| 334 | * entity can be found, and stop checking the pipeline if the |
| 335 | * source entity isn't a subdev. |
| 336 | */ |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 337 | pad = media_entity_remote_source(pad); |
Laurent Pinchart | 00542ed | 2011-07-31 17:12:02 +0200 | [diff] [blame] | 338 | if (pad == NULL) |
| 339 | return -EPIPE; |
| 340 | |
| 341 | if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 342 | break; |
| 343 | |
| 344 | subdev = media_entity_to_v4l2_subdev(pad->entity); |
| 345 | |
| 346 | fmt_source.pad = pad->index; |
| 347 | fmt_source.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 348 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_source); |
| 349 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 350 | return -EPIPE; |
| 351 | |
| 352 | /* Check if the two ends match */ |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 353 | if (fmt_source.format.width != fmt_sink.format.width || |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 354 | fmt_source.format.height != fmt_sink.format.height) |
| 355 | return -EPIPE; |
Michael Jones | c09af04 | 2011-03-29 05:19:09 -0300 | [diff] [blame] | 356 | |
| 357 | if (shifter_link) { |
| 358 | unsigned int parallel_shift = 0; |
| 359 | if (isp->isp_ccdc.input == CCDC_INPUT_PARALLEL) { |
| 360 | struct isp_parallel_platform_data *pdata = |
| 361 | &((struct isp_v4l2_subdevs_group *) |
| 362 | subdev->host_priv)->bus.parallel; |
| 363 | parallel_shift = pdata->data_lane_shift * 2; |
| 364 | } |
| 365 | if (!isp_video_is_shiftable(fmt_source.format.code, |
| 366 | fmt_sink.format.code, |
| 367 | parallel_shift)) |
| 368 | return -EPIPE; |
| 369 | } else if (fmt_source.format.code != fmt_sink.format.code) |
| 370 | return -EPIPE; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 371 | } |
| 372 | |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | static int |
| 377 | __isp_video_get_format(struct isp_video *video, struct v4l2_format *format) |
| 378 | { |
| 379 | struct v4l2_subdev_format fmt; |
| 380 | struct v4l2_subdev *subdev; |
| 381 | u32 pad; |
| 382 | int ret; |
| 383 | |
| 384 | subdev = isp_video_remote_subdev(video, &pad); |
| 385 | if (subdev == NULL) |
| 386 | return -EINVAL; |
| 387 | |
| 388 | mutex_lock(&video->mutex); |
| 389 | |
| 390 | fmt.pad = pad; |
| 391 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 392 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); |
| 393 | if (ret == -ENOIOCTLCMD) |
| 394 | ret = -EINVAL; |
| 395 | |
| 396 | mutex_unlock(&video->mutex); |
| 397 | |
| 398 | if (ret) |
| 399 | return ret; |
| 400 | |
| 401 | format->type = video->type; |
| 402 | return isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix); |
| 403 | } |
| 404 | |
| 405 | static int |
| 406 | isp_video_check_format(struct isp_video *video, struct isp_video_fh *vfh) |
| 407 | { |
| 408 | struct v4l2_format format; |
| 409 | int ret; |
| 410 | |
| 411 | memcpy(&format, &vfh->format, sizeof(format)); |
| 412 | ret = __isp_video_get_format(video, &format); |
| 413 | if (ret < 0) |
| 414 | return ret; |
| 415 | |
| 416 | if (vfh->format.fmt.pix.pixelformat != format.fmt.pix.pixelformat || |
| 417 | vfh->format.fmt.pix.height != format.fmt.pix.height || |
| 418 | vfh->format.fmt.pix.width != format.fmt.pix.width || |
| 419 | vfh->format.fmt.pix.bytesperline != format.fmt.pix.bytesperline || |
| 420 | vfh->format.fmt.pix.sizeimage != format.fmt.pix.sizeimage) |
| 421 | return -EINVAL; |
| 422 | |
| 423 | return ret; |
| 424 | } |
| 425 | |
| 426 | /* ----------------------------------------------------------------------------- |
| 427 | * IOMMU management |
| 428 | */ |
| 429 | |
| 430 | #define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8) |
| 431 | |
| 432 | /* |
| 433 | * ispmmu_vmap - Wrapper for Virtual memory mapping of a scatter gather list |
| 434 | * @dev: Device pointer specific to the OMAP3 ISP. |
| 435 | * @sglist: Pointer to source Scatter gather list to allocate. |
| 436 | * @sglen: Number of elements of the scatter-gatter list. |
| 437 | * |
| 438 | * Returns a resulting mapped device address by the ISP MMU, or -ENOMEM if |
| 439 | * we ran out of memory. |
| 440 | */ |
| 441 | static dma_addr_t |
| 442 | ispmmu_vmap(struct isp_device *isp, const struct scatterlist *sglist, int sglen) |
| 443 | { |
| 444 | struct sg_table *sgt; |
| 445 | u32 da; |
| 446 | |
| 447 | sgt = kmalloc(sizeof(*sgt), GFP_KERNEL); |
| 448 | if (sgt == NULL) |
| 449 | return -ENOMEM; |
| 450 | |
| 451 | sgt->sgl = (struct scatterlist *)sglist; |
| 452 | sgt->nents = sglen; |
| 453 | sgt->orig_nents = sglen; |
| 454 | |
Ohad Ben-Cohen | 6c32df4 | 2011-08-17 22:57:56 +0300 | [diff] [blame] | 455 | da = omap_iommu_vmap(isp->domain, isp->iommu, 0, sgt, IOMMU_FLAG); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 456 | if (IS_ERR_VALUE(da)) |
| 457 | kfree(sgt); |
| 458 | |
| 459 | return da; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * ispmmu_vunmap - Unmap a device address from the ISP MMU |
| 464 | * @dev: Device pointer specific to the OMAP3 ISP. |
| 465 | * @da: Device address generated from a ispmmu_vmap call. |
| 466 | */ |
| 467 | static void ispmmu_vunmap(struct isp_device *isp, dma_addr_t da) |
| 468 | { |
| 469 | struct sg_table *sgt; |
| 470 | |
Ohad Ben-Cohen | 6c32df4 | 2011-08-17 22:57:56 +0300 | [diff] [blame] | 471 | sgt = omap_iommu_vunmap(isp->domain, isp->iommu, (u32)da); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 472 | kfree(sgt); |
| 473 | } |
| 474 | |
| 475 | /* ----------------------------------------------------------------------------- |
| 476 | * Video queue operations |
| 477 | */ |
| 478 | |
| 479 | static void isp_video_queue_prepare(struct isp_video_queue *queue, |
| 480 | unsigned int *nbuffers, unsigned int *size) |
| 481 | { |
| 482 | struct isp_video_fh *vfh = |
| 483 | container_of(queue, struct isp_video_fh, queue); |
| 484 | struct isp_video *video = vfh->video; |
| 485 | |
| 486 | *size = vfh->format.fmt.pix.sizeimage; |
| 487 | if (*size == 0) |
| 488 | return; |
| 489 | |
| 490 | *nbuffers = min(*nbuffers, video->capture_mem / PAGE_ALIGN(*size)); |
| 491 | } |
| 492 | |
| 493 | static void isp_video_buffer_cleanup(struct isp_video_buffer *buf) |
| 494 | { |
| 495 | struct isp_video_fh *vfh = isp_video_queue_to_isp_video_fh(buf->queue); |
| 496 | struct isp_buffer *buffer = to_isp_buffer(buf); |
| 497 | struct isp_video *video = vfh->video; |
| 498 | |
| 499 | if (buffer->isp_addr) { |
| 500 | ispmmu_vunmap(video->isp, buffer->isp_addr); |
| 501 | buffer->isp_addr = 0; |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | static int isp_video_buffer_prepare(struct isp_video_buffer *buf) |
| 506 | { |
| 507 | struct isp_video_fh *vfh = isp_video_queue_to_isp_video_fh(buf->queue); |
| 508 | struct isp_buffer *buffer = to_isp_buffer(buf); |
| 509 | struct isp_video *video = vfh->video; |
| 510 | unsigned long addr; |
| 511 | |
| 512 | addr = ispmmu_vmap(video->isp, buf->sglist, buf->sglen); |
| 513 | if (IS_ERR_VALUE(addr)) |
| 514 | return -EIO; |
| 515 | |
| 516 | if (!IS_ALIGNED(addr, 32)) { |
| 517 | dev_dbg(video->isp->dev, "Buffer address must be " |
| 518 | "aligned to 32 bytes boundary.\n"); |
| 519 | ispmmu_vunmap(video->isp, buffer->isp_addr); |
| 520 | return -EINVAL; |
| 521 | } |
| 522 | |
| 523 | buf->vbuf.bytesused = vfh->format.fmt.pix.sizeimage; |
| 524 | buffer->isp_addr = addr; |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | /* |
| 529 | * isp_video_buffer_queue - Add buffer to streaming queue |
| 530 | * @buf: Video buffer |
| 531 | * |
| 532 | * In memory-to-memory mode, start streaming on the pipeline if buffers are |
| 533 | * queued on both the input and the output, if the pipeline isn't already busy. |
| 534 | * If the pipeline is busy, it will be restarted in the output module interrupt |
| 535 | * handler. |
| 536 | */ |
| 537 | static void isp_video_buffer_queue(struct isp_video_buffer *buf) |
| 538 | { |
| 539 | struct isp_video_fh *vfh = isp_video_queue_to_isp_video_fh(buf->queue); |
| 540 | struct isp_buffer *buffer = to_isp_buffer(buf); |
| 541 | struct isp_video *video = vfh->video; |
| 542 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); |
| 543 | enum isp_pipeline_state state; |
| 544 | unsigned long flags; |
| 545 | unsigned int empty; |
| 546 | unsigned int start; |
| 547 | |
| 548 | empty = list_empty(&video->dmaqueue); |
| 549 | list_add_tail(&buffer->buffer.irqlist, &video->dmaqueue); |
| 550 | |
| 551 | if (empty) { |
| 552 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 553 | state = ISP_PIPELINE_QUEUE_OUTPUT; |
| 554 | else |
| 555 | state = ISP_PIPELINE_QUEUE_INPUT; |
| 556 | |
| 557 | spin_lock_irqsave(&pipe->lock, flags); |
| 558 | pipe->state |= state; |
| 559 | video->ops->queue(video, buffer); |
| 560 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED; |
| 561 | |
| 562 | start = isp_pipeline_ready(pipe); |
| 563 | if (start) |
| 564 | pipe->state |= ISP_PIPELINE_STREAM; |
| 565 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 566 | |
| 567 | if (start) |
| 568 | omap3isp_pipeline_set_stream(pipe, |
| 569 | ISP_PIPELINE_STREAM_SINGLESHOT); |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | static const struct isp_video_queue_operations isp_video_queue_ops = { |
| 574 | .queue_prepare = &isp_video_queue_prepare, |
| 575 | .buffer_prepare = &isp_video_buffer_prepare, |
| 576 | .buffer_queue = &isp_video_buffer_queue, |
| 577 | .buffer_cleanup = &isp_video_buffer_cleanup, |
| 578 | }; |
| 579 | |
| 580 | /* |
| 581 | * omap3isp_video_buffer_next - Complete the current buffer and return the next |
| 582 | * @video: ISP video object |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 583 | * @error: Whether an error occurred during capture |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 584 | * |
| 585 | * Remove the current video buffer from the DMA queue and fill its timestamp, |
| 586 | * field count and state fields before waking up its completion handler. |
| 587 | * |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 588 | * The buffer state is set to VIDEOBUF_DONE if no error occurred (@error is 0) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 589 | * or VIDEOBUF_ERROR otherwise (@error is non-zero). |
| 590 | * |
| 591 | * The DMA queue is expected to contain at least one buffer. |
| 592 | * |
| 593 | * Return a pointer to the next buffer in the DMA queue, or NULL if the queue is |
| 594 | * empty. |
| 595 | */ |
| 596 | struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video, |
| 597 | unsigned int error) |
| 598 | { |
| 599 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); |
| 600 | struct isp_video_queue *queue = video->queue; |
| 601 | enum isp_pipeline_state state; |
| 602 | struct isp_video_buffer *buf; |
| 603 | unsigned long flags; |
| 604 | struct timespec ts; |
| 605 | |
| 606 | spin_lock_irqsave(&queue->irqlock, flags); |
| 607 | if (WARN_ON(list_empty(&video->dmaqueue))) { |
| 608 | spin_unlock_irqrestore(&queue->irqlock, flags); |
| 609 | return NULL; |
| 610 | } |
| 611 | |
| 612 | buf = list_first_entry(&video->dmaqueue, struct isp_video_buffer, |
| 613 | irqlist); |
| 614 | list_del(&buf->irqlist); |
| 615 | spin_unlock_irqrestore(&queue->irqlock, flags); |
| 616 | |
| 617 | ktime_get_ts(&ts); |
| 618 | buf->vbuf.timestamp.tv_sec = ts.tv_sec; |
| 619 | buf->vbuf.timestamp.tv_usec = ts.tv_nsec / NSEC_PER_USEC; |
| 620 | |
| 621 | /* Do frame number propagation only if this is the output video node. |
| 622 | * Frame number either comes from the CSI receivers or it gets |
| 623 | * incremented here if H3A is not active. |
| 624 | * Note: There is no guarantee that the output buffer will finish |
| 625 | * first, so the input number might lag behind by 1 in some cases. |
| 626 | */ |
| 627 | if (video == pipe->output && !pipe->do_propagation) |
| 628 | buf->vbuf.sequence = atomic_inc_return(&pipe->frame_number); |
| 629 | else |
| 630 | buf->vbuf.sequence = atomic_read(&pipe->frame_number); |
| 631 | |
| 632 | buf->state = error ? ISP_BUF_STATE_ERROR : ISP_BUF_STATE_DONE; |
| 633 | |
| 634 | wake_up(&buf->wait); |
| 635 | |
| 636 | if (list_empty(&video->dmaqueue)) { |
| 637 | if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 638 | state = ISP_PIPELINE_QUEUE_OUTPUT |
| 639 | | ISP_PIPELINE_STREAM; |
| 640 | else |
| 641 | state = ISP_PIPELINE_QUEUE_INPUT |
| 642 | | ISP_PIPELINE_STREAM; |
| 643 | |
| 644 | spin_lock_irqsave(&pipe->lock, flags); |
| 645 | pipe->state &= ~state; |
| 646 | if (video->pipe.stream_state == ISP_PIPELINE_STREAM_CONTINUOUS) |
| 647 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; |
| 648 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 649 | return NULL; |
| 650 | } |
| 651 | |
| 652 | if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->input != NULL) { |
| 653 | spin_lock_irqsave(&pipe->lock, flags); |
| 654 | pipe->state &= ~ISP_PIPELINE_STREAM; |
| 655 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 656 | } |
| 657 | |
| 658 | buf = list_first_entry(&video->dmaqueue, struct isp_video_buffer, |
| 659 | irqlist); |
| 660 | buf->state = ISP_BUF_STATE_ACTIVE; |
| 661 | return to_isp_buffer(buf); |
| 662 | } |
| 663 | |
| 664 | /* |
| 665 | * omap3isp_video_resume - Perform resume operation on the buffers |
| 666 | * @video: ISP video object |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 667 | * @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 668 | * |
| 669 | * This function is intended to be used on suspend/resume scenario. It |
| 670 | * requests video queue layer to discard buffers marked as DONE if it's in |
| 671 | * continuous mode and requests ISP modules to queue again the ACTIVE buffer |
| 672 | * if there's any. |
| 673 | */ |
| 674 | void omap3isp_video_resume(struct isp_video *video, int continuous) |
| 675 | { |
| 676 | struct isp_buffer *buf = NULL; |
| 677 | |
| 678 | if (continuous && video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 679 | omap3isp_video_queue_discard_done(video->queue); |
| 680 | |
| 681 | if (!list_empty(&video->dmaqueue)) { |
| 682 | buf = list_first_entry(&video->dmaqueue, |
| 683 | struct isp_buffer, buffer.irqlist); |
| 684 | video->ops->queue(video, buf); |
| 685 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED; |
| 686 | } else { |
| 687 | if (continuous) |
| 688 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; |
| 689 | } |
| 690 | } |
| 691 | |
| 692 | /* ----------------------------------------------------------------------------- |
| 693 | * V4L2 ioctls |
| 694 | */ |
| 695 | |
| 696 | static int |
| 697 | isp_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap) |
| 698 | { |
| 699 | struct isp_video *video = video_drvdata(file); |
| 700 | |
| 701 | strlcpy(cap->driver, ISP_VIDEO_DRIVER_NAME, sizeof(cap->driver)); |
| 702 | strlcpy(cap->card, video->video.name, sizeof(cap->card)); |
| 703 | strlcpy(cap->bus_info, "media", sizeof(cap->bus_info)); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 704 | |
| 705 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 706 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 707 | else |
| 708 | cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; |
| 709 | |
| 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | static int |
| 714 | isp_video_get_format(struct file *file, void *fh, struct v4l2_format *format) |
| 715 | { |
| 716 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 717 | struct isp_video *video = video_drvdata(file); |
| 718 | |
| 719 | if (format->type != video->type) |
| 720 | return -EINVAL; |
| 721 | |
| 722 | mutex_lock(&video->mutex); |
| 723 | *format = vfh->format; |
| 724 | mutex_unlock(&video->mutex); |
| 725 | |
| 726 | return 0; |
| 727 | } |
| 728 | |
| 729 | static int |
| 730 | isp_video_set_format(struct file *file, void *fh, struct v4l2_format *format) |
| 731 | { |
| 732 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 733 | struct isp_video *video = video_drvdata(file); |
| 734 | struct v4l2_mbus_framefmt fmt; |
| 735 | |
| 736 | if (format->type != video->type) |
| 737 | return -EINVAL; |
| 738 | |
| 739 | mutex_lock(&video->mutex); |
| 740 | |
| 741 | /* Fill the bytesperline and sizeimage fields by converting to media bus |
| 742 | * format and back to pixel format. |
| 743 | */ |
| 744 | isp_video_pix_to_mbus(&format->fmt.pix, &fmt); |
| 745 | isp_video_mbus_to_pix(video, &fmt, &format->fmt.pix); |
| 746 | |
| 747 | vfh->format = *format; |
| 748 | |
| 749 | mutex_unlock(&video->mutex); |
| 750 | return 0; |
| 751 | } |
| 752 | |
| 753 | static int |
| 754 | isp_video_try_format(struct file *file, void *fh, struct v4l2_format *format) |
| 755 | { |
| 756 | struct isp_video *video = video_drvdata(file); |
| 757 | struct v4l2_subdev_format fmt; |
| 758 | struct v4l2_subdev *subdev; |
| 759 | u32 pad; |
| 760 | int ret; |
| 761 | |
| 762 | if (format->type != video->type) |
| 763 | return -EINVAL; |
| 764 | |
| 765 | subdev = isp_video_remote_subdev(video, &pad); |
| 766 | if (subdev == NULL) |
| 767 | return -EINVAL; |
| 768 | |
| 769 | isp_video_pix_to_mbus(&format->fmt.pix, &fmt.format); |
| 770 | |
| 771 | fmt.pad = pad; |
| 772 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 773 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); |
| 774 | if (ret) |
| 775 | return ret == -ENOIOCTLCMD ? -EINVAL : ret; |
| 776 | |
| 777 | isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix); |
| 778 | return 0; |
| 779 | } |
| 780 | |
| 781 | static int |
| 782 | isp_video_cropcap(struct file *file, void *fh, struct v4l2_cropcap *cropcap) |
| 783 | { |
| 784 | struct isp_video *video = video_drvdata(file); |
| 785 | struct v4l2_subdev *subdev; |
| 786 | int ret; |
| 787 | |
| 788 | subdev = isp_video_remote_subdev(video, NULL); |
| 789 | if (subdev == NULL) |
| 790 | return -EINVAL; |
| 791 | |
| 792 | mutex_lock(&video->mutex); |
| 793 | ret = v4l2_subdev_call(subdev, video, cropcap, cropcap); |
| 794 | mutex_unlock(&video->mutex); |
| 795 | |
| 796 | return ret == -ENOIOCTLCMD ? -EINVAL : ret; |
| 797 | } |
| 798 | |
| 799 | static int |
| 800 | isp_video_get_crop(struct file *file, void *fh, struct v4l2_crop *crop) |
| 801 | { |
| 802 | struct isp_video *video = video_drvdata(file); |
| 803 | struct v4l2_subdev_format format; |
| 804 | struct v4l2_subdev *subdev; |
| 805 | u32 pad; |
| 806 | int ret; |
| 807 | |
| 808 | subdev = isp_video_remote_subdev(video, &pad); |
| 809 | if (subdev == NULL) |
| 810 | return -EINVAL; |
| 811 | |
| 812 | /* Try the get crop operation first and fallback to get format if not |
| 813 | * implemented. |
| 814 | */ |
| 815 | ret = v4l2_subdev_call(subdev, video, g_crop, crop); |
| 816 | if (ret != -ENOIOCTLCMD) |
| 817 | return ret; |
| 818 | |
| 819 | format.pad = pad; |
| 820 | format.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 821 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &format); |
| 822 | if (ret < 0) |
| 823 | return ret == -ENOIOCTLCMD ? -EINVAL : ret; |
| 824 | |
| 825 | crop->c.left = 0; |
| 826 | crop->c.top = 0; |
| 827 | crop->c.width = format.format.width; |
| 828 | crop->c.height = format.format.height; |
| 829 | |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | static int |
| 834 | isp_video_set_crop(struct file *file, void *fh, struct v4l2_crop *crop) |
| 835 | { |
| 836 | struct isp_video *video = video_drvdata(file); |
| 837 | struct v4l2_subdev *subdev; |
| 838 | int ret; |
| 839 | |
| 840 | subdev = isp_video_remote_subdev(video, NULL); |
| 841 | if (subdev == NULL) |
| 842 | return -EINVAL; |
| 843 | |
| 844 | mutex_lock(&video->mutex); |
| 845 | ret = v4l2_subdev_call(subdev, video, s_crop, crop); |
| 846 | mutex_unlock(&video->mutex); |
| 847 | |
| 848 | return ret == -ENOIOCTLCMD ? -EINVAL : ret; |
| 849 | } |
| 850 | |
| 851 | static int |
| 852 | isp_video_get_param(struct file *file, void *fh, struct v4l2_streamparm *a) |
| 853 | { |
| 854 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 855 | struct isp_video *video = video_drvdata(file); |
| 856 | |
| 857 | if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || |
| 858 | video->type != a->type) |
| 859 | return -EINVAL; |
| 860 | |
| 861 | memset(a, 0, sizeof(*a)); |
| 862 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| 863 | a->parm.output.capability = V4L2_CAP_TIMEPERFRAME; |
| 864 | a->parm.output.timeperframe = vfh->timeperframe; |
| 865 | |
| 866 | return 0; |
| 867 | } |
| 868 | |
| 869 | static int |
| 870 | isp_video_set_param(struct file *file, void *fh, struct v4l2_streamparm *a) |
| 871 | { |
| 872 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 873 | struct isp_video *video = video_drvdata(file); |
| 874 | |
| 875 | if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || |
| 876 | video->type != a->type) |
| 877 | return -EINVAL; |
| 878 | |
| 879 | if (a->parm.output.timeperframe.denominator == 0) |
| 880 | a->parm.output.timeperframe.denominator = 1; |
| 881 | |
| 882 | vfh->timeperframe = a->parm.output.timeperframe; |
| 883 | |
| 884 | return 0; |
| 885 | } |
| 886 | |
| 887 | static int |
| 888 | isp_video_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *rb) |
| 889 | { |
| 890 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 891 | |
| 892 | return omap3isp_video_queue_reqbufs(&vfh->queue, rb); |
| 893 | } |
| 894 | |
| 895 | static int |
| 896 | isp_video_querybuf(struct file *file, void *fh, struct v4l2_buffer *b) |
| 897 | { |
| 898 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 899 | |
| 900 | return omap3isp_video_queue_querybuf(&vfh->queue, b); |
| 901 | } |
| 902 | |
| 903 | static int |
| 904 | isp_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) |
| 905 | { |
| 906 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 907 | |
| 908 | return omap3isp_video_queue_qbuf(&vfh->queue, b); |
| 909 | } |
| 910 | |
| 911 | static int |
| 912 | isp_video_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b) |
| 913 | { |
| 914 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 915 | |
| 916 | return omap3isp_video_queue_dqbuf(&vfh->queue, b, |
| 917 | file->f_flags & O_NONBLOCK); |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * Stream management |
| 922 | * |
| 923 | * Every ISP pipeline has a single input and a single output. The input can be |
| 924 | * either a sensor or a video node. The output is always a video node. |
| 925 | * |
| 926 | * As every pipeline has an output video node, the ISP video objects at the |
| 927 | * pipeline output stores the pipeline state. It tracks the streaming state of |
| 928 | * both the input and output, as well as the availability of buffers. |
| 929 | * |
| 930 | * In sensor-to-memory mode, frames are always available at the pipeline input. |
| 931 | * Starting the sensor usually requires I2C transfers and must be done in |
| 932 | * interruptible context. The pipeline is started and stopped synchronously |
| 933 | * to the stream on/off commands. All modules in the pipeline will get their |
| 934 | * subdev set stream handler called. The module at the end of the pipeline must |
| 935 | * delay starting the hardware until buffers are available at its output. |
| 936 | * |
| 937 | * In memory-to-memory mode, starting/stopping the stream requires |
| 938 | * synchronization between the input and output. ISP modules can't be stopped |
| 939 | * in the middle of a frame, and at least some of the modules seem to become |
| 940 | * busy as soon as they're started, even if they don't receive a frame start |
| 941 | * event. For that reason frames need to be processed in single-shot mode. The |
| 942 | * driver needs to wait until a frame is completely processed and written to |
| 943 | * memory before restarting the pipeline for the next frame. Pipelined |
| 944 | * processing might be possible but requires more testing. |
| 945 | * |
| 946 | * Stream start must be delayed until buffers are available at both the input |
| 947 | * and output. The pipeline must be started in the videobuf queue callback with |
| 948 | * the buffers queue spinlock held. The modules subdev set stream operation must |
| 949 | * not sleep. |
| 950 | */ |
| 951 | static int |
| 952 | isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) |
| 953 | { |
| 954 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 955 | struct isp_video *video = video_drvdata(file); |
| 956 | enum isp_pipeline_state state; |
| 957 | struct isp_pipeline *pipe; |
| 958 | struct isp_video *far_end; |
| 959 | unsigned long flags; |
| 960 | int ret; |
| 961 | |
| 962 | if (type != video->type) |
| 963 | return -EINVAL; |
| 964 | |
| 965 | mutex_lock(&video->stream_lock); |
| 966 | |
| 967 | if (video->streaming) { |
| 968 | mutex_unlock(&video->stream_lock); |
| 969 | return -EBUSY; |
| 970 | } |
| 971 | |
| 972 | /* Start streaming on the pipeline. No link touching an entity in the |
| 973 | * pipeline can be activated or deactivated once streaming is started. |
| 974 | */ |
| 975 | pipe = video->video.entity.pipe |
| 976 | ? to_isp_pipeline(&video->video.entity) : &video->pipe; |
| 977 | media_entity_pipeline_start(&video->video.entity, &pipe->pipe); |
| 978 | |
| 979 | /* Verify that the currently configured format matches the output of |
| 980 | * the connected subdev. |
| 981 | */ |
| 982 | ret = isp_video_check_format(video, vfh); |
| 983 | if (ret < 0) |
| 984 | goto error; |
| 985 | |
| 986 | video->bpl_padding = ret; |
| 987 | video->bpl_value = vfh->format.fmt.pix.bytesperline; |
| 988 | |
| 989 | /* Find the ISP video node connected at the far end of the pipeline and |
| 990 | * update the pipeline. |
| 991 | */ |
| 992 | far_end = isp_video_far_end(video); |
| 993 | |
| 994 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 995 | state = ISP_PIPELINE_STREAM_OUTPUT | ISP_PIPELINE_IDLE_OUTPUT; |
| 996 | pipe->input = far_end; |
| 997 | pipe->output = video; |
| 998 | } else { |
| 999 | if (far_end == NULL) { |
| 1000 | ret = -EPIPE; |
| 1001 | goto error; |
| 1002 | } |
| 1003 | |
| 1004 | state = ISP_PIPELINE_STREAM_INPUT | ISP_PIPELINE_IDLE_INPUT; |
| 1005 | pipe->input = video; |
| 1006 | pipe->output = far_end; |
| 1007 | } |
| 1008 | |
Laurent Pinchart | 4b0ec19 | 2011-03-03 10:05:22 -0300 | [diff] [blame] | 1009 | if (video->isp->pdata->set_constraints) |
| 1010 | video->isp->pdata->set_constraints(video->isp, true); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1011 | pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]); |
| 1012 | |
| 1013 | /* Validate the pipeline and update its state. */ |
| 1014 | ret = isp_video_validate_pipeline(pipe); |
| 1015 | if (ret < 0) |
| 1016 | goto error; |
| 1017 | |
| 1018 | spin_lock_irqsave(&pipe->lock, flags); |
| 1019 | pipe->state &= ~ISP_PIPELINE_STREAM; |
| 1020 | pipe->state |= state; |
| 1021 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 1022 | |
| 1023 | /* Set the maximum time per frame as the value requested by userspace. |
| 1024 | * This is a soft limit that can be overridden if the hardware doesn't |
| 1025 | * support the request limit. |
| 1026 | */ |
| 1027 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 1028 | pipe->max_timeperframe = vfh->timeperframe; |
| 1029 | |
| 1030 | video->queue = &vfh->queue; |
| 1031 | INIT_LIST_HEAD(&video->dmaqueue); |
| 1032 | atomic_set(&pipe->frame_number, -1); |
| 1033 | |
| 1034 | ret = omap3isp_video_queue_streamon(&vfh->queue); |
| 1035 | if (ret < 0) |
| 1036 | goto error; |
| 1037 | |
| 1038 | /* In sensor-to-memory mode, the stream can be started synchronously |
| 1039 | * to the stream on command. In memory-to-memory mode, it will be |
| 1040 | * started when buffers are queued on both the input and output. |
| 1041 | */ |
| 1042 | if (pipe->input == NULL) { |
| 1043 | ret = omap3isp_pipeline_set_stream(pipe, |
| 1044 | ISP_PIPELINE_STREAM_CONTINUOUS); |
| 1045 | if (ret < 0) |
| 1046 | goto error; |
| 1047 | spin_lock_irqsave(&video->queue->irqlock, flags); |
| 1048 | if (list_empty(&video->dmaqueue)) |
| 1049 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; |
| 1050 | spin_unlock_irqrestore(&video->queue->irqlock, flags); |
| 1051 | } |
| 1052 | |
| 1053 | error: |
| 1054 | if (ret < 0) { |
| 1055 | omap3isp_video_queue_streamoff(&vfh->queue); |
Laurent Pinchart | 4b0ec19 | 2011-03-03 10:05:22 -0300 | [diff] [blame] | 1056 | if (video->isp->pdata->set_constraints) |
| 1057 | video->isp->pdata->set_constraints(video->isp, false); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1058 | media_entity_pipeline_stop(&video->video.entity); |
Laurent Pinchart | 5b6c3ef | 2011-08-13 13:13:32 -0300 | [diff] [blame] | 1059 | /* The DMA queue must be emptied here, otherwise CCDC interrupts |
| 1060 | * that will get triggered the next time the CCDC is powered up |
| 1061 | * will try to access buffers that might have been freed but |
| 1062 | * still present in the DMA queue. This can easily get triggered |
| 1063 | * if the above omap3isp_pipeline_set_stream() call fails on a |
| 1064 | * system with a free-running sensor. |
| 1065 | */ |
| 1066 | INIT_LIST_HEAD(&video->dmaqueue); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1067 | video->queue = NULL; |
| 1068 | } |
| 1069 | |
| 1070 | if (!ret) |
| 1071 | video->streaming = 1; |
| 1072 | |
| 1073 | mutex_unlock(&video->stream_lock); |
| 1074 | return ret; |
| 1075 | } |
| 1076 | |
| 1077 | static int |
| 1078 | isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) |
| 1079 | { |
| 1080 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 1081 | struct isp_video *video = video_drvdata(file); |
| 1082 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); |
| 1083 | enum isp_pipeline_state state; |
| 1084 | unsigned int streaming; |
| 1085 | unsigned long flags; |
| 1086 | |
| 1087 | if (type != video->type) |
| 1088 | return -EINVAL; |
| 1089 | |
| 1090 | mutex_lock(&video->stream_lock); |
| 1091 | |
| 1092 | /* Make sure we're not streaming yet. */ |
| 1093 | mutex_lock(&vfh->queue.lock); |
| 1094 | streaming = vfh->queue.streaming; |
| 1095 | mutex_unlock(&vfh->queue.lock); |
| 1096 | |
| 1097 | if (!streaming) |
| 1098 | goto done; |
| 1099 | |
| 1100 | /* Update the pipeline state. */ |
| 1101 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1102 | state = ISP_PIPELINE_STREAM_OUTPUT |
| 1103 | | ISP_PIPELINE_QUEUE_OUTPUT; |
| 1104 | else |
| 1105 | state = ISP_PIPELINE_STREAM_INPUT |
| 1106 | | ISP_PIPELINE_QUEUE_INPUT; |
| 1107 | |
| 1108 | spin_lock_irqsave(&pipe->lock, flags); |
| 1109 | pipe->state &= ~state; |
| 1110 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 1111 | |
| 1112 | /* Stop the stream. */ |
| 1113 | omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_STOPPED); |
| 1114 | omap3isp_video_queue_streamoff(&vfh->queue); |
| 1115 | video->queue = NULL; |
| 1116 | video->streaming = 0; |
| 1117 | |
Laurent Pinchart | 4b0ec19 | 2011-03-03 10:05:22 -0300 | [diff] [blame] | 1118 | if (video->isp->pdata->set_constraints) |
| 1119 | video->isp->pdata->set_constraints(video->isp, false); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1120 | media_entity_pipeline_stop(&video->video.entity); |
| 1121 | |
| 1122 | done: |
| 1123 | mutex_unlock(&video->stream_lock); |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
| 1127 | static int |
| 1128 | isp_video_enum_input(struct file *file, void *fh, struct v4l2_input *input) |
| 1129 | { |
| 1130 | if (input->index > 0) |
| 1131 | return -EINVAL; |
| 1132 | |
| 1133 | strlcpy(input->name, "camera", sizeof(input->name)); |
| 1134 | input->type = V4L2_INPUT_TYPE_CAMERA; |
| 1135 | |
| 1136 | return 0; |
| 1137 | } |
| 1138 | |
| 1139 | static int |
| 1140 | isp_video_g_input(struct file *file, void *fh, unsigned int *input) |
| 1141 | { |
| 1142 | *input = 0; |
| 1143 | |
| 1144 | return 0; |
| 1145 | } |
| 1146 | |
| 1147 | static int |
| 1148 | isp_video_s_input(struct file *file, void *fh, unsigned int input) |
| 1149 | { |
| 1150 | return input == 0 ? 0 : -EINVAL; |
| 1151 | } |
| 1152 | |
| 1153 | static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { |
| 1154 | .vidioc_querycap = isp_video_querycap, |
| 1155 | .vidioc_g_fmt_vid_cap = isp_video_get_format, |
| 1156 | .vidioc_s_fmt_vid_cap = isp_video_set_format, |
| 1157 | .vidioc_try_fmt_vid_cap = isp_video_try_format, |
| 1158 | .vidioc_g_fmt_vid_out = isp_video_get_format, |
| 1159 | .vidioc_s_fmt_vid_out = isp_video_set_format, |
| 1160 | .vidioc_try_fmt_vid_out = isp_video_try_format, |
| 1161 | .vidioc_cropcap = isp_video_cropcap, |
| 1162 | .vidioc_g_crop = isp_video_get_crop, |
| 1163 | .vidioc_s_crop = isp_video_set_crop, |
| 1164 | .vidioc_g_parm = isp_video_get_param, |
| 1165 | .vidioc_s_parm = isp_video_set_param, |
| 1166 | .vidioc_reqbufs = isp_video_reqbufs, |
| 1167 | .vidioc_querybuf = isp_video_querybuf, |
| 1168 | .vidioc_qbuf = isp_video_qbuf, |
| 1169 | .vidioc_dqbuf = isp_video_dqbuf, |
| 1170 | .vidioc_streamon = isp_video_streamon, |
| 1171 | .vidioc_streamoff = isp_video_streamoff, |
| 1172 | .vidioc_enum_input = isp_video_enum_input, |
| 1173 | .vidioc_g_input = isp_video_g_input, |
| 1174 | .vidioc_s_input = isp_video_s_input, |
| 1175 | }; |
| 1176 | |
| 1177 | /* ----------------------------------------------------------------------------- |
| 1178 | * V4L2 file operations |
| 1179 | */ |
| 1180 | |
| 1181 | static int isp_video_open(struct file *file) |
| 1182 | { |
| 1183 | struct isp_video *video = video_drvdata(file); |
| 1184 | struct isp_video_fh *handle; |
| 1185 | int ret = 0; |
| 1186 | |
| 1187 | handle = kzalloc(sizeof(*handle), GFP_KERNEL); |
| 1188 | if (handle == NULL) |
| 1189 | return -ENOMEM; |
| 1190 | |
| 1191 | v4l2_fh_init(&handle->vfh, &video->video); |
| 1192 | v4l2_fh_add(&handle->vfh); |
| 1193 | |
| 1194 | /* If this is the first user, initialise the pipeline. */ |
| 1195 | if (omap3isp_get(video->isp) == NULL) { |
| 1196 | ret = -EBUSY; |
| 1197 | goto done; |
| 1198 | } |
| 1199 | |
| 1200 | ret = omap3isp_pipeline_pm_use(&video->video.entity, 1); |
| 1201 | if (ret < 0) { |
| 1202 | omap3isp_put(video->isp); |
| 1203 | goto done; |
| 1204 | } |
| 1205 | |
| 1206 | omap3isp_video_queue_init(&handle->queue, video->type, |
| 1207 | &isp_video_queue_ops, video->isp->dev, |
| 1208 | sizeof(struct isp_buffer)); |
| 1209 | |
| 1210 | memset(&handle->format, 0, sizeof(handle->format)); |
| 1211 | handle->format.type = video->type; |
| 1212 | handle->timeperframe.denominator = 1; |
| 1213 | |
| 1214 | handle->video = video; |
| 1215 | file->private_data = &handle->vfh; |
| 1216 | |
| 1217 | done: |
| 1218 | if (ret < 0) { |
| 1219 | v4l2_fh_del(&handle->vfh); |
| 1220 | kfree(handle); |
| 1221 | } |
| 1222 | |
| 1223 | return ret; |
| 1224 | } |
| 1225 | |
| 1226 | static int isp_video_release(struct file *file) |
| 1227 | { |
| 1228 | struct isp_video *video = video_drvdata(file); |
| 1229 | struct v4l2_fh *vfh = file->private_data; |
| 1230 | struct isp_video_fh *handle = to_isp_video_fh(vfh); |
| 1231 | |
| 1232 | /* Disable streaming and free the buffers queue resources. */ |
| 1233 | isp_video_streamoff(file, vfh, video->type); |
| 1234 | |
| 1235 | mutex_lock(&handle->queue.lock); |
| 1236 | omap3isp_video_queue_cleanup(&handle->queue); |
| 1237 | mutex_unlock(&handle->queue.lock); |
| 1238 | |
| 1239 | omap3isp_pipeline_pm_use(&video->video.entity, 0); |
| 1240 | |
| 1241 | /* Release the file handle. */ |
| 1242 | v4l2_fh_del(vfh); |
| 1243 | kfree(handle); |
| 1244 | file->private_data = NULL; |
| 1245 | |
| 1246 | omap3isp_put(video->isp); |
| 1247 | |
| 1248 | return 0; |
| 1249 | } |
| 1250 | |
| 1251 | static unsigned int isp_video_poll(struct file *file, poll_table *wait) |
| 1252 | { |
| 1253 | struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); |
| 1254 | struct isp_video_queue *queue = &vfh->queue; |
| 1255 | |
| 1256 | return omap3isp_video_queue_poll(queue, file, wait); |
| 1257 | } |
| 1258 | |
| 1259 | static int isp_video_mmap(struct file *file, struct vm_area_struct *vma) |
| 1260 | { |
| 1261 | struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); |
| 1262 | |
| 1263 | return omap3isp_video_queue_mmap(&vfh->queue, vma); |
| 1264 | } |
| 1265 | |
| 1266 | static struct v4l2_file_operations isp_video_fops = { |
| 1267 | .owner = THIS_MODULE, |
| 1268 | .unlocked_ioctl = video_ioctl2, |
| 1269 | .open = isp_video_open, |
| 1270 | .release = isp_video_release, |
| 1271 | .poll = isp_video_poll, |
| 1272 | .mmap = isp_video_mmap, |
| 1273 | }; |
| 1274 | |
| 1275 | /* ----------------------------------------------------------------------------- |
| 1276 | * ISP video core |
| 1277 | */ |
| 1278 | |
| 1279 | static const struct isp_video_operations isp_video_dummy_ops = { |
| 1280 | }; |
| 1281 | |
| 1282 | int omap3isp_video_init(struct isp_video *video, const char *name) |
| 1283 | { |
| 1284 | const char *direction; |
| 1285 | int ret; |
| 1286 | |
| 1287 | switch (video->type) { |
| 1288 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 1289 | direction = "output"; |
| 1290 | video->pad.flags = MEDIA_PAD_FL_SINK; |
| 1291 | break; |
| 1292 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| 1293 | direction = "input"; |
| 1294 | video->pad.flags = MEDIA_PAD_FL_SOURCE; |
| 1295 | break; |
| 1296 | |
| 1297 | default: |
| 1298 | return -EINVAL; |
| 1299 | } |
| 1300 | |
| 1301 | ret = media_entity_init(&video->video.entity, 1, &video->pad, 0); |
| 1302 | if (ret < 0) |
| 1303 | return ret; |
| 1304 | |
| 1305 | mutex_init(&video->mutex); |
| 1306 | atomic_set(&video->active, 0); |
| 1307 | |
| 1308 | spin_lock_init(&video->pipe.lock); |
| 1309 | mutex_init(&video->stream_lock); |
| 1310 | |
| 1311 | /* Initialize the video device. */ |
| 1312 | if (video->ops == NULL) |
| 1313 | video->ops = &isp_video_dummy_ops; |
| 1314 | |
| 1315 | video->video.fops = &isp_video_fops; |
| 1316 | snprintf(video->video.name, sizeof(video->video.name), |
| 1317 | "OMAP3 ISP %s %s", name, direction); |
| 1318 | video->video.vfl_type = VFL_TYPE_GRABBER; |
| 1319 | video->video.release = video_device_release_empty; |
| 1320 | video->video.ioctl_ops = &isp_video_ioctl_ops; |
| 1321 | video->pipe.stream_state = ISP_PIPELINE_STREAM_STOPPED; |
| 1322 | |
| 1323 | video_set_drvdata(&video->video, video); |
| 1324 | |
| 1325 | return 0; |
| 1326 | } |
| 1327 | |
Laurent Pinchart | 63b4ca2 | 2011-09-22 16:54:34 -0300 | [diff] [blame] | 1328 | void omap3isp_video_cleanup(struct isp_video *video) |
| 1329 | { |
| 1330 | media_entity_cleanup(&video->video.entity); |
Laurent Pinchart | ed33ac8 | 2011-09-22 17:09:26 -0300 | [diff] [blame^] | 1331 | mutex_destroy(&video->stream_lock); |
| 1332 | mutex_destroy(&video->mutex); |
Laurent Pinchart | 63b4ca2 | 2011-09-22 16:54:34 -0300 | [diff] [blame] | 1333 | } |
| 1334 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1335 | int omap3isp_video_register(struct isp_video *video, struct v4l2_device *vdev) |
| 1336 | { |
| 1337 | int ret; |
| 1338 | |
| 1339 | video->video.v4l2_dev = vdev; |
| 1340 | |
| 1341 | ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1); |
| 1342 | if (ret < 0) |
| 1343 | printk(KERN_ERR "%s: could not register video device (%d)\n", |
| 1344 | __func__, ret); |
| 1345 | |
| 1346 | return ret; |
| 1347 | } |
| 1348 | |
| 1349 | void omap3isp_video_unregister(struct isp_video *video) |
| 1350 | { |
Laurent Pinchart | 63b4ca2 | 2011-09-22 16:54:34 -0300 | [diff] [blame] | 1351 | if (video_is_registered(&video->video)) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1352 | video_unregister_device(&video->video); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1353 | } |