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. |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #include <asm/cacheflush.h> |
| 17 | #include <linux/clk.h> |
| 18 | #include <linux/mm.h> |
Dmitry Artamonow | 025521f | 2011-11-20 12:54:26 -0300 | [diff] [blame] | 19 | #include <linux/module.h> |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 20 | #include <linux/pagemap.h> |
| 21 | #include <linux/scatterlist.h> |
| 22 | #include <linux/sched.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/vmalloc.h> |
| 25 | #include <media/v4l2-dev.h> |
| 26 | #include <media/v4l2-ioctl.h> |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 27 | #include <media/videobuf2-dma-contig.h> |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 28 | |
| 29 | #include "ispvideo.h" |
| 30 | #include "isp.h" |
| 31 | |
| 32 | |
| 33 | /* ----------------------------------------------------------------------------- |
| 34 | * Helper functions |
| 35 | */ |
| 36 | |
Sakari Ailus | 8f4f298 | 2011-12-28 06:28:41 -0300 | [diff] [blame] | 37 | /* |
| 38 | * NOTE: When adding new media bus codes, always remember to add |
| 39 | * corresponding in-memory formats to the table below!!! |
| 40 | */ |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 41 | static struct isp_format_info formats[] = { |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 42 | { MEDIA_BUS_FMT_Y8_1X8, MEDIA_BUS_FMT_Y8_1X8, |
| 43 | MEDIA_BUS_FMT_Y8_1X8, MEDIA_BUS_FMT_Y8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 44 | V4L2_PIX_FMT_GREY, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 45 | { MEDIA_BUS_FMT_Y10_1X10, MEDIA_BUS_FMT_Y10_1X10, |
| 46 | MEDIA_BUS_FMT_Y10_1X10, MEDIA_BUS_FMT_Y8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 47 | V4L2_PIX_FMT_Y10, 10, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 48 | { MEDIA_BUS_FMT_Y12_1X12, MEDIA_BUS_FMT_Y10_1X10, |
| 49 | MEDIA_BUS_FMT_Y12_1X12, MEDIA_BUS_FMT_Y8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 50 | V4L2_PIX_FMT_Y12, 12, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 51 | { MEDIA_BUS_FMT_SBGGR8_1X8, MEDIA_BUS_FMT_SBGGR8_1X8, |
| 52 | MEDIA_BUS_FMT_SBGGR8_1X8, MEDIA_BUS_FMT_SBGGR8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 53 | V4L2_PIX_FMT_SBGGR8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 54 | { MEDIA_BUS_FMT_SGBRG8_1X8, MEDIA_BUS_FMT_SGBRG8_1X8, |
| 55 | MEDIA_BUS_FMT_SGBRG8_1X8, MEDIA_BUS_FMT_SGBRG8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 56 | V4L2_PIX_FMT_SGBRG8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 57 | { MEDIA_BUS_FMT_SGRBG8_1X8, MEDIA_BUS_FMT_SGRBG8_1X8, |
| 58 | MEDIA_BUS_FMT_SGRBG8_1X8, MEDIA_BUS_FMT_SGRBG8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 59 | V4L2_PIX_FMT_SGRBG8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 60 | { MEDIA_BUS_FMT_SRGGB8_1X8, MEDIA_BUS_FMT_SRGGB8_1X8, |
| 61 | MEDIA_BUS_FMT_SRGGB8_1X8, MEDIA_BUS_FMT_SRGGB8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 62 | V4L2_PIX_FMT_SRGGB8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 63 | { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, |
| 64 | MEDIA_BUS_FMT_SBGGR10_1X10, 0, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 65 | V4L2_PIX_FMT_SBGGR10DPCM8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 66 | { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, |
| 67 | MEDIA_BUS_FMT_SGBRG10_1X10, 0, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 68 | V4L2_PIX_FMT_SGBRG10DPCM8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 69 | { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, |
| 70 | MEDIA_BUS_FMT_SGRBG10_1X10, 0, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 71 | V4L2_PIX_FMT_SGRBG10DPCM8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 72 | { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, |
| 73 | MEDIA_BUS_FMT_SRGGB10_1X10, 0, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 74 | V4L2_PIX_FMT_SRGGB10DPCM8, 8, 1, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 75 | { MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, |
| 76 | MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SBGGR8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 77 | V4L2_PIX_FMT_SBGGR10, 10, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 78 | { MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SGBRG10_1X10, |
| 79 | MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SGBRG8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 80 | V4L2_PIX_FMT_SGBRG10, 10, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 81 | { MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, |
| 82 | MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGRBG8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 83 | V4L2_PIX_FMT_SGRBG10, 10, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 84 | { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SRGGB10_1X10, |
| 85 | MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SRGGB8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 86 | V4L2_PIX_FMT_SRGGB10, 10, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 87 | { MEDIA_BUS_FMT_SBGGR12_1X12, MEDIA_BUS_FMT_SBGGR10_1X10, |
| 88 | MEDIA_BUS_FMT_SBGGR12_1X12, MEDIA_BUS_FMT_SBGGR8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 89 | V4L2_PIX_FMT_SBGGR12, 12, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 90 | { MEDIA_BUS_FMT_SGBRG12_1X12, MEDIA_BUS_FMT_SGBRG10_1X10, |
| 91 | MEDIA_BUS_FMT_SGBRG12_1X12, MEDIA_BUS_FMT_SGBRG8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 92 | V4L2_PIX_FMT_SGBRG12, 12, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 93 | { MEDIA_BUS_FMT_SGRBG12_1X12, MEDIA_BUS_FMT_SGRBG10_1X10, |
| 94 | MEDIA_BUS_FMT_SGRBG12_1X12, MEDIA_BUS_FMT_SGRBG8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 95 | V4L2_PIX_FMT_SGRBG12, 12, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 96 | { MEDIA_BUS_FMT_SRGGB12_1X12, MEDIA_BUS_FMT_SRGGB10_1X10, |
| 97 | MEDIA_BUS_FMT_SRGGB12_1X12, MEDIA_BUS_FMT_SRGGB8_1X8, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 98 | V4L2_PIX_FMT_SRGGB12, 12, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 99 | { MEDIA_BUS_FMT_UYVY8_1X16, MEDIA_BUS_FMT_UYVY8_1X16, |
| 100 | MEDIA_BUS_FMT_UYVY8_1X16, 0, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 101 | V4L2_PIX_FMT_UYVY, 16, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 102 | { MEDIA_BUS_FMT_YUYV8_1X16, MEDIA_BUS_FMT_YUYV8_1X16, |
| 103 | MEDIA_BUS_FMT_YUYV8_1X16, 0, |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 104 | V4L2_PIX_FMT_YUYV, 16, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 105 | { MEDIA_BUS_FMT_UYVY8_2X8, MEDIA_BUS_FMT_UYVY8_2X8, |
| 106 | MEDIA_BUS_FMT_UYVY8_2X8, 0, |
Laurent Pinchart | 0810fd9 | 2012-05-24 11:55:00 -0300 | [diff] [blame] | 107 | V4L2_PIX_FMT_UYVY, 8, 2, }, |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 108 | { MEDIA_BUS_FMT_YUYV8_2X8, MEDIA_BUS_FMT_YUYV8_2X8, |
| 109 | MEDIA_BUS_FMT_YUYV8_2X8, 0, |
Laurent Pinchart | 0810fd9 | 2012-05-24 11:55:00 -0300 | [diff] [blame] | 110 | V4L2_PIX_FMT_YUYV, 8, 2, }, |
Laurent Pinchart | c51364c | 2011-08-31 11:03:53 -0300 | [diff] [blame] | 111 | /* Empty entry to catch the unsupported pixel code (0) used by the CCDC |
| 112 | * module and avoid NULL pointer dereferences. |
| 113 | */ |
| 114 | { 0, } |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 115 | }; |
| 116 | |
Boris BREZILLON | 27ffaeb | 2014-11-10 14:28:31 -0300 | [diff] [blame] | 117 | const struct isp_format_info *omap3isp_video_format_info(u32 code) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 118 | { |
| 119 | unsigned int i; |
| 120 | |
| 121 | for (i = 0; i < ARRAY_SIZE(formats); ++i) { |
| 122 | if (formats[i].code == code) |
| 123 | return &formats[i]; |
| 124 | } |
| 125 | |
| 126 | return NULL; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format |
| 131 | * @video: ISP video instance |
| 132 | * @mbus: v4l2_mbus_framefmt format (input) |
| 133 | * @pix: v4l2_pix_format format (output) |
| 134 | * |
| 135 | * Fill the output pix structure with information from the input mbus format. |
| 136 | * The bytesperline and sizeimage fields are computed from the requested bytes |
| 137 | * per line value in the pix format and information from the video instance. |
| 138 | * |
| 139 | * Return the number of padding bytes at end of line. |
| 140 | */ |
| 141 | static unsigned int isp_video_mbus_to_pix(const struct isp_video *video, |
| 142 | const struct v4l2_mbus_framefmt *mbus, |
| 143 | struct v4l2_pix_format *pix) |
| 144 | { |
| 145 | unsigned int bpl = pix->bytesperline; |
| 146 | unsigned int min_bpl; |
| 147 | unsigned int i; |
| 148 | |
| 149 | memset(pix, 0, sizeof(*pix)); |
| 150 | pix->width = mbus->width; |
| 151 | pix->height = mbus->height; |
| 152 | |
| 153 | for (i = 0; i < ARRAY_SIZE(formats); ++i) { |
| 154 | if (formats[i].code == mbus->code) |
| 155 | break; |
| 156 | } |
| 157 | |
| 158 | if (WARN_ON(i == ARRAY_SIZE(formats))) |
| 159 | return 0; |
| 160 | |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 161 | min_bpl = pix->width * formats[i].bpp; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 162 | |
| 163 | /* Clamp the requested bytes per line value. If the maximum bytes per |
| 164 | * line value is zero, the module doesn't support user configurable line |
| 165 | * sizes. Override the requested value with the minimum in that case. |
| 166 | */ |
| 167 | if (video->bpl_max) |
| 168 | bpl = clamp(bpl, min_bpl, video->bpl_max); |
| 169 | else |
| 170 | bpl = min_bpl; |
| 171 | |
| 172 | if (!video->bpl_zero_padding || bpl != min_bpl) |
| 173 | bpl = ALIGN(bpl, video->bpl_alignment); |
| 174 | |
| 175 | pix->pixelformat = formats[i].pixelformat; |
| 176 | pix->bytesperline = bpl; |
| 177 | pix->sizeimage = pix->bytesperline * pix->height; |
| 178 | pix->colorspace = mbus->colorspace; |
| 179 | pix->field = mbus->field; |
| 180 | |
| 181 | return bpl - min_bpl; |
| 182 | } |
| 183 | |
| 184 | static void isp_video_pix_to_mbus(const struct v4l2_pix_format *pix, |
| 185 | struct v4l2_mbus_framefmt *mbus) |
| 186 | { |
| 187 | unsigned int i; |
| 188 | |
| 189 | memset(mbus, 0, sizeof(*mbus)); |
| 190 | mbus->width = pix->width; |
| 191 | mbus->height = pix->height; |
| 192 | |
Laurent Pinchart | c3cd257 | 2011-11-28 08:25:30 -0300 | [diff] [blame] | 193 | /* Skip the last format in the loop so that it will be selected if no |
| 194 | * match is found. |
| 195 | */ |
| 196 | for (i = 0; i < ARRAY_SIZE(formats) - 1; ++i) { |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 197 | if (formats[i].pixelformat == pix->pixelformat) |
| 198 | break; |
| 199 | } |
| 200 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 201 | mbus->code = formats[i].code; |
| 202 | mbus->colorspace = pix->colorspace; |
| 203 | mbus->field = pix->field; |
| 204 | } |
| 205 | |
| 206 | static struct v4l2_subdev * |
| 207 | isp_video_remote_subdev(struct isp_video *video, u32 *pad) |
| 208 | { |
| 209 | struct media_pad *remote; |
| 210 | |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 211 | remote = media_entity_remote_pad(&video->pad); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 212 | |
| 213 | if (remote == NULL || |
| 214 | media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
| 215 | return NULL; |
| 216 | |
| 217 | if (pad) |
| 218 | *pad = remote->index; |
| 219 | |
| 220 | return media_entity_to_v4l2_subdev(remote->entity); |
| 221 | } |
| 222 | |
| 223 | /* Return a pointer to the ISP video instance at the far end of the pipeline. */ |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 224 | static int isp_video_get_graph_data(struct isp_video *video, |
| 225 | struct isp_pipeline *pipe) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 226 | { |
| 227 | struct media_entity_graph graph; |
| 228 | struct media_entity *entity = &video->video.entity; |
| 229 | struct media_device *mdev = entity->parent; |
| 230 | struct isp_video *far_end = NULL; |
| 231 | |
| 232 | mutex_lock(&mdev->graph_mutex); |
| 233 | media_entity_graph_walk_start(&graph, entity); |
| 234 | |
| 235 | while ((entity = media_entity_graph_walk_next(&graph))) { |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 236 | struct isp_video *__video; |
| 237 | |
| 238 | pipe->entities |= 1 << entity->id; |
| 239 | |
| 240 | if (far_end != NULL) |
| 241 | continue; |
| 242 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 243 | if (entity == &video->video.entity) |
| 244 | continue; |
| 245 | |
| 246 | if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) |
| 247 | continue; |
| 248 | |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 249 | __video = to_isp_video(media_entity_to_video_device(entity)); |
| 250 | if (__video->type != video->type) |
| 251 | far_end = __video; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | mutex_unlock(&mdev->graph_mutex); |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 255 | |
| 256 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 257 | pipe->input = far_end; |
| 258 | pipe->output = video; |
| 259 | } else { |
| 260 | if (far_end == NULL) |
| 261 | return -EPIPE; |
| 262 | |
| 263 | pipe->input = video; |
| 264 | pipe->output = far_end; |
| 265 | } |
| 266 | |
| 267 | return 0; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 268 | } |
| 269 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 270 | static int |
| 271 | __isp_video_get_format(struct isp_video *video, struct v4l2_format *format) |
| 272 | { |
| 273 | struct v4l2_subdev_format fmt; |
| 274 | struct v4l2_subdev *subdev; |
| 275 | u32 pad; |
| 276 | int ret; |
| 277 | |
| 278 | subdev = isp_video_remote_subdev(video, &pad); |
| 279 | if (subdev == NULL) |
| 280 | return -EINVAL; |
| 281 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 282 | fmt.pad = pad; |
| 283 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 284 | |
Laurent Pinchart | 5264682 | 2013-11-04 06:52:10 -0300 | [diff] [blame] | 285 | mutex_lock(&video->mutex); |
| 286 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 287 | mutex_unlock(&video->mutex); |
| 288 | |
| 289 | if (ret) |
| 290 | return ret; |
| 291 | |
| 292 | format->type = video->type; |
| 293 | return isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix); |
| 294 | } |
| 295 | |
| 296 | static int |
| 297 | isp_video_check_format(struct isp_video *video, struct isp_video_fh *vfh) |
| 298 | { |
| 299 | struct v4l2_format format; |
| 300 | int ret; |
| 301 | |
| 302 | memcpy(&format, &vfh->format, sizeof(format)); |
| 303 | ret = __isp_video_get_format(video, &format); |
| 304 | if (ret < 0) |
| 305 | return ret; |
| 306 | |
| 307 | if (vfh->format.fmt.pix.pixelformat != format.fmt.pix.pixelformat || |
| 308 | vfh->format.fmt.pix.height != format.fmt.pix.height || |
| 309 | vfh->format.fmt.pix.width != format.fmt.pix.width || |
| 310 | vfh->format.fmt.pix.bytesperline != format.fmt.pix.bytesperline || |
Laurent Pinchart | f7abbe9 | 2014-05-19 12:14:42 -0300 | [diff] [blame] | 311 | vfh->format.fmt.pix.sizeimage != format.fmt.pix.sizeimage || |
| 312 | vfh->format.fmt.pix.field != format.fmt.pix.field) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 313 | return -EINVAL; |
| 314 | |
Laurent Pinchart | f7abbe9 | 2014-05-19 12:14:42 -0300 | [diff] [blame] | 315 | return 0; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | /* ----------------------------------------------------------------------------- |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 319 | * Video queue operations |
| 320 | */ |
| 321 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 322 | static int isp_video_queue_setup(struct vb2_queue *queue, |
| 323 | const struct v4l2_format *fmt, |
| 324 | unsigned int *count, unsigned int *num_planes, |
| 325 | unsigned int sizes[], void *alloc_ctxs[]) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 326 | { |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 327 | struct isp_video_fh *vfh = vb2_get_drv_priv(queue); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 328 | struct isp_video *video = vfh->video; |
| 329 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 330 | *num_planes = 1; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 331 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 332 | sizes[0] = vfh->format.fmt.pix.sizeimage; |
| 333 | if (sizes[0] == 0) |
| 334 | return -EINVAL; |
| 335 | |
| 336 | alloc_ctxs[0] = video->alloc_ctx; |
| 337 | |
| 338 | *count = min(*count, video->capture_mem / PAGE_ALIGN(sizes[0])); |
| 339 | |
| 340 | return 0; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 341 | } |
| 342 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 343 | static int isp_video_buffer_prepare(struct vb2_buffer *buf) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 344 | { |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 345 | struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 346 | struct isp_buffer *buffer = to_isp_buffer(buf); |
| 347 | struct isp_video *video = vfh->video; |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 348 | dma_addr_t addr; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 349 | |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 350 | /* Refuse to prepare the buffer is the video node has registered an |
| 351 | * error. We don't need to take any lock here as the operation is |
| 352 | * inherently racy. The authoritative check will be performed in the |
| 353 | * queue handler, which can't return an error, this check is just a best |
| 354 | * effort to notify userspace as early as possible. |
| 355 | */ |
| 356 | if (unlikely(video->error)) |
| 357 | return -EIO; |
| 358 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 359 | addr = vb2_dma_contig_plane_dma_addr(buf, 0); |
| 360 | if (!IS_ALIGNED(addr, 32)) { |
| 361 | dev_dbg(video->isp->dev, |
| 362 | "Buffer address must be aligned to 32 bytes boundary.\n"); |
| 363 | return -EINVAL; |
| 364 | } |
| 365 | |
| 366 | vb2_set_plane_payload(&buffer->vb, 0, vfh->format.fmt.pix.sizeimage); |
Laurent Pinchart | 21d8582 | 2014-03-09 20:17:12 -0300 | [diff] [blame] | 367 | buffer->dma = addr; |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 368 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * isp_video_buffer_queue - Add buffer to streaming queue |
| 374 | * @buf: Video buffer |
| 375 | * |
| 376 | * In memory-to-memory mode, start streaming on the pipeline if buffers are |
| 377 | * queued on both the input and the output, if the pipeline isn't already busy. |
| 378 | * If the pipeline is busy, it will be restarted in the output module interrupt |
| 379 | * handler. |
| 380 | */ |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 381 | static void isp_video_buffer_queue(struct vb2_buffer *buf) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 382 | { |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 383 | struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 384 | struct isp_buffer *buffer = to_isp_buffer(buf); |
| 385 | struct isp_video *video = vfh->video; |
| 386 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); |
| 387 | enum isp_pipeline_state state; |
| 388 | unsigned long flags; |
| 389 | unsigned int empty; |
| 390 | unsigned int start; |
| 391 | |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 392 | spin_lock_irqsave(&video->irqlock, flags); |
| 393 | |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 394 | if (unlikely(video->error)) { |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 395 | vb2_buffer_done(&buffer->vb, VB2_BUF_STATE_ERROR); |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 396 | spin_unlock_irqrestore(&video->irqlock, flags); |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 397 | return; |
| 398 | } |
| 399 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 400 | empty = list_empty(&video->dmaqueue); |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 401 | list_add_tail(&buffer->irqlist, &video->dmaqueue); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 402 | |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 403 | spin_unlock_irqrestore(&video->irqlock, flags); |
| 404 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 405 | if (empty) { |
| 406 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 407 | state = ISP_PIPELINE_QUEUE_OUTPUT; |
| 408 | else |
| 409 | state = ISP_PIPELINE_QUEUE_INPUT; |
| 410 | |
| 411 | spin_lock_irqsave(&pipe->lock, flags); |
| 412 | pipe->state |= state; |
| 413 | video->ops->queue(video, buffer); |
| 414 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED; |
| 415 | |
| 416 | start = isp_pipeline_ready(pipe); |
| 417 | if (start) |
| 418 | pipe->state |= ISP_PIPELINE_STREAM; |
| 419 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 420 | |
| 421 | if (start) |
| 422 | omap3isp_pipeline_set_stream(pipe, |
| 423 | ISP_PIPELINE_STREAM_SINGLESHOT); |
| 424 | } |
| 425 | } |
| 426 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 427 | static const struct vb2_ops isp_video_queue_ops = { |
| 428 | .queue_setup = isp_video_queue_setup, |
| 429 | .buf_prepare = isp_video_buffer_prepare, |
| 430 | .buf_queue = isp_video_buffer_queue, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 431 | }; |
| 432 | |
| 433 | /* |
| 434 | * omap3isp_video_buffer_next - Complete the current buffer and return the next |
| 435 | * @video: ISP video object |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 436 | * |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 437 | * Remove the current video buffer from the DMA queue and fill its timestamp and |
| 438 | * field count before handing it back to videobuf2. |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 439 | * |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 440 | * For capture video nodes the buffer state is set to VB2_BUF_STATE_DONE if no |
| 441 | * error has been flagged in the pipeline, or to VB2_BUF_STATE_ERROR otherwise. |
| 442 | * For video output nodes the buffer state is always set to VB2_BUF_STATE_DONE. |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 443 | * |
| 444 | * The DMA queue is expected to contain at least one buffer. |
| 445 | * |
| 446 | * Return a pointer to the next buffer in the DMA queue, or NULL if the queue is |
| 447 | * empty. |
| 448 | */ |
Laurent Pinchart | 875e2e3 | 2011-12-07 08:34:50 -0300 | [diff] [blame] | 449 | struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 450 | { |
| 451 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 452 | enum isp_pipeline_state state; |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 453 | struct isp_buffer *buf; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 454 | unsigned long flags; |
| 455 | struct timespec ts; |
| 456 | |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 457 | spin_lock_irqsave(&video->irqlock, flags); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 458 | if (WARN_ON(list_empty(&video->dmaqueue))) { |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 459 | spin_unlock_irqrestore(&video->irqlock, flags); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 460 | return NULL; |
| 461 | } |
| 462 | |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 463 | buf = list_first_entry(&video->dmaqueue, struct isp_buffer, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 464 | irqlist); |
| 465 | list_del(&buf->irqlist); |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 466 | spin_unlock_irqrestore(&video->irqlock, flags); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 467 | |
| 468 | ktime_get_ts(&ts); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 469 | buf->vb.v4l2_buf.timestamp.tv_sec = ts.tv_sec; |
| 470 | buf->vb.v4l2_buf.timestamp.tv_usec = ts.tv_nsec / NSEC_PER_USEC; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 471 | |
| 472 | /* Do frame number propagation only if this is the output video node. |
| 473 | * Frame number either comes from the CSI receivers or it gets |
| 474 | * incremented here if H3A is not active. |
| 475 | * Note: There is no guarantee that the output buffer will finish |
| 476 | * first, so the input number might lag behind by 1 in some cases. |
| 477 | */ |
| 478 | if (video == pipe->output && !pipe->do_propagation) |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 479 | buf->vb.v4l2_buf.sequence = |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 480 | atomic_inc_return(&pipe->frame_number); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 481 | else |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 482 | buf->vb.v4l2_buf.sequence = atomic_read(&pipe->frame_number); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 483 | |
Laurent Pinchart | 9a36d8e | 2014-05-19 16:37:38 -0300 | [diff] [blame] | 484 | if (pipe->field != V4L2_FIELD_NONE) |
| 485 | buf->vb.v4l2_buf.sequence /= 2; |
| 486 | |
| 487 | buf->vb.v4l2_buf.field = pipe->field; |
| 488 | |
Laurent Pinchart | 875e2e3 | 2011-12-07 08:34:50 -0300 | [diff] [blame] | 489 | /* Report pipeline errors to userspace on the capture device side. */ |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 490 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->error) { |
| 491 | state = VB2_BUF_STATE_ERROR; |
Laurent Pinchart | 875e2e3 | 2011-12-07 08:34:50 -0300 | [diff] [blame] | 492 | pipe->error = false; |
| 493 | } else { |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 494 | state = VB2_BUF_STATE_DONE; |
Laurent Pinchart | 875e2e3 | 2011-12-07 08:34:50 -0300 | [diff] [blame] | 495 | } |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 496 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 497 | vb2_buffer_done(&buf->vb, state); |
| 498 | |
| 499 | spin_lock_irqsave(&video->irqlock, flags); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 500 | |
| 501 | if (list_empty(&video->dmaqueue)) { |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 502 | spin_unlock_irqrestore(&video->irqlock, flags); |
| 503 | |
| 504 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 505 | state = ISP_PIPELINE_QUEUE_OUTPUT |
| 506 | | ISP_PIPELINE_STREAM; |
| 507 | else |
| 508 | state = ISP_PIPELINE_QUEUE_INPUT |
| 509 | | ISP_PIPELINE_STREAM; |
| 510 | |
| 511 | spin_lock_irqsave(&pipe->lock, flags); |
| 512 | pipe->state &= ~state; |
| 513 | if (video->pipe.stream_state == ISP_PIPELINE_STREAM_CONTINUOUS) |
| 514 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; |
| 515 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 516 | return NULL; |
| 517 | } |
| 518 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 519 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->input != NULL) { |
| 520 | spin_lock(&pipe->lock); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 521 | pipe->state &= ~ISP_PIPELINE_STREAM; |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 522 | spin_unlock(&pipe->lock); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 523 | } |
| 524 | |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 525 | buf = list_first_entry(&video->dmaqueue, struct isp_buffer, |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 526 | irqlist); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 527 | buf->vb.state = VB2_BUF_STATE_ACTIVE; |
| 528 | |
| 529 | spin_unlock_irqrestore(&video->irqlock, flags); |
| 530 | |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 531 | return buf; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | /* |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 535 | * omap3isp_video_cancel_stream - Cancel stream on a video node |
| 536 | * @video: ISP video object |
| 537 | * |
| 538 | * Cancelling a stream mark all buffers on the video node as erroneous and makes |
| 539 | * sure no new buffer can be queued. |
| 540 | */ |
| 541 | void omap3isp_video_cancel_stream(struct isp_video *video) |
| 542 | { |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 543 | unsigned long flags; |
| 544 | |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 545 | spin_lock_irqsave(&video->irqlock, flags); |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 546 | |
| 547 | while (!list_empty(&video->dmaqueue)) { |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 548 | struct isp_buffer *buf; |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 549 | |
| 550 | buf = list_first_entry(&video->dmaqueue, |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 551 | struct isp_buffer, irqlist); |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 552 | list_del(&buf->irqlist); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 553 | vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 554 | } |
| 555 | |
| 556 | video->error = true; |
| 557 | |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 558 | spin_unlock_irqrestore(&video->irqlock, flags); |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | /* |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 562 | * omap3isp_video_resume - Perform resume operation on the buffers |
| 563 | * @video: ISP video object |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 564 | * @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] | 565 | * |
| 566 | * This function is intended to be used on suspend/resume scenario. It |
| 567 | * requests video queue layer to discard buffers marked as DONE if it's in |
| 568 | * continuous mode and requests ISP modules to queue again the ACTIVE buffer |
| 569 | * if there's any. |
| 570 | */ |
| 571 | void omap3isp_video_resume(struct isp_video *video, int continuous) |
| 572 | { |
| 573 | struct isp_buffer *buf = NULL; |
| 574 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 575 | if (continuous && video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 576 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 577 | vb2_discard_done(video->queue); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 578 | mutex_unlock(&video->queue_lock); |
| 579 | } |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 580 | |
| 581 | if (!list_empty(&video->dmaqueue)) { |
| 582 | buf = list_first_entry(&video->dmaqueue, |
Laurent Pinchart | eb2c00d | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 583 | struct isp_buffer, irqlist); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 584 | video->ops->queue(video, buf); |
| 585 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED; |
| 586 | } else { |
| 587 | if (continuous) |
| 588 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | /* ----------------------------------------------------------------------------- |
| 593 | * V4L2 ioctls |
| 594 | */ |
| 595 | |
| 596 | static int |
| 597 | isp_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap) |
| 598 | { |
| 599 | struct isp_video *video = video_drvdata(file); |
| 600 | |
| 601 | strlcpy(cap->driver, ISP_VIDEO_DRIVER_NAME, sizeof(cap->driver)); |
| 602 | strlcpy(cap->card, video->video.name, sizeof(cap->card)); |
| 603 | strlcpy(cap->bus_info, "media", sizeof(cap->bus_info)); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 604 | |
| 605 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 606 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 607 | else |
| 608 | cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; |
| 609 | |
| 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | static int |
| 614 | isp_video_get_format(struct file *file, void *fh, struct v4l2_format *format) |
| 615 | { |
| 616 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 617 | struct isp_video *video = video_drvdata(file); |
| 618 | |
| 619 | if (format->type != video->type) |
| 620 | return -EINVAL; |
| 621 | |
| 622 | mutex_lock(&video->mutex); |
| 623 | *format = vfh->format; |
| 624 | mutex_unlock(&video->mutex); |
| 625 | |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | static int |
| 630 | isp_video_set_format(struct file *file, void *fh, struct v4l2_format *format) |
| 631 | { |
| 632 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 633 | struct isp_video *video = video_drvdata(file); |
| 634 | struct v4l2_mbus_framefmt fmt; |
| 635 | |
| 636 | if (format->type != video->type) |
| 637 | return -EINVAL; |
| 638 | |
Laurent Pinchart | bcb4e0e | 2014-05-19 19:40:04 -0300 | [diff] [blame] | 639 | /* Replace unsupported field orders with sane defaults. */ |
| 640 | switch (format->fmt.pix.field) { |
| 641 | case V4L2_FIELD_NONE: |
| 642 | /* Progressive is supported everywhere. */ |
| 643 | break; |
| 644 | case V4L2_FIELD_ALTERNATE: |
| 645 | /* ALTERNATE is not supported on output nodes. */ |
| 646 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 647 | format->fmt.pix.field = V4L2_FIELD_NONE; |
| 648 | break; |
| 649 | case V4L2_FIELD_INTERLACED: |
| 650 | /* The ISP has no concept of video standard, select the |
| 651 | * top-bottom order when the unqualified interlaced order is |
| 652 | * requested. |
| 653 | */ |
| 654 | format->fmt.pix.field = V4L2_FIELD_INTERLACED_TB; |
| 655 | /* Fall-through */ |
| 656 | case V4L2_FIELD_INTERLACED_TB: |
| 657 | case V4L2_FIELD_INTERLACED_BT: |
| 658 | /* Interlaced orders are only supported at the CCDC output. */ |
| 659 | if (video != &video->isp->isp_ccdc.video_out) |
| 660 | format->fmt.pix.field = V4L2_FIELD_NONE; |
| 661 | break; |
| 662 | case V4L2_FIELD_TOP: |
| 663 | case V4L2_FIELD_BOTTOM: |
| 664 | case V4L2_FIELD_SEQ_TB: |
| 665 | case V4L2_FIELD_SEQ_BT: |
| 666 | default: |
| 667 | /* All other field orders are currently unsupported, default to |
| 668 | * progressive. |
| 669 | */ |
Laurent Pinchart | 48a8a0c | 2014-05-19 10:49:58 -0300 | [diff] [blame] | 670 | format->fmt.pix.field = V4L2_FIELD_NONE; |
Laurent Pinchart | bcb4e0e | 2014-05-19 19:40:04 -0300 | [diff] [blame] | 671 | break; |
| 672 | } |
Laurent Pinchart | 48a8a0c | 2014-05-19 10:49:58 -0300 | [diff] [blame] | 673 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 674 | /* Fill the bytesperline and sizeimage fields by converting to media bus |
| 675 | * format and back to pixel format. |
| 676 | */ |
| 677 | isp_video_pix_to_mbus(&format->fmt.pix, &fmt); |
| 678 | isp_video_mbus_to_pix(video, &fmt, &format->fmt.pix); |
| 679 | |
Laurent Pinchart | 25c5cc9 | 2014-05-19 10:33:15 -0300 | [diff] [blame] | 680 | mutex_lock(&video->mutex); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 681 | vfh->format = *format; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 682 | mutex_unlock(&video->mutex); |
Laurent Pinchart | 25c5cc9 | 2014-05-19 10:33:15 -0300 | [diff] [blame] | 683 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 684 | return 0; |
| 685 | } |
| 686 | |
| 687 | static int |
| 688 | isp_video_try_format(struct file *file, void *fh, struct v4l2_format *format) |
| 689 | { |
| 690 | struct isp_video *video = video_drvdata(file); |
| 691 | struct v4l2_subdev_format fmt; |
| 692 | struct v4l2_subdev *subdev; |
| 693 | u32 pad; |
| 694 | int ret; |
| 695 | |
| 696 | if (format->type != video->type) |
| 697 | return -EINVAL; |
| 698 | |
| 699 | subdev = isp_video_remote_subdev(video, &pad); |
| 700 | if (subdev == NULL) |
| 701 | return -EINVAL; |
| 702 | |
| 703 | isp_video_pix_to_mbus(&format->fmt.pix, &fmt.format); |
| 704 | |
| 705 | fmt.pad = pad; |
| 706 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 707 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); |
| 708 | if (ret) |
Wanlong Gao | a694f1b | 2012-08-27 04:23:15 -0300 | [diff] [blame] | 709 | return ret == -ENOIOCTLCMD ? -ENOTTY : ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 710 | |
| 711 | isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix); |
| 712 | return 0; |
| 713 | } |
| 714 | |
| 715 | static int |
| 716 | isp_video_cropcap(struct file *file, void *fh, struct v4l2_cropcap *cropcap) |
| 717 | { |
| 718 | struct isp_video *video = video_drvdata(file); |
| 719 | struct v4l2_subdev *subdev; |
| 720 | int ret; |
| 721 | |
| 722 | subdev = isp_video_remote_subdev(video, NULL); |
| 723 | if (subdev == NULL) |
| 724 | return -EINVAL; |
| 725 | |
| 726 | mutex_lock(&video->mutex); |
| 727 | ret = v4l2_subdev_call(subdev, video, cropcap, cropcap); |
| 728 | mutex_unlock(&video->mutex); |
| 729 | |
Wanlong Gao | a694f1b | 2012-08-27 04:23:15 -0300 | [diff] [blame] | 730 | return ret == -ENOIOCTLCMD ? -ENOTTY : ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | static int |
| 734 | isp_video_get_crop(struct file *file, void *fh, struct v4l2_crop *crop) |
| 735 | { |
| 736 | struct isp_video *video = video_drvdata(file); |
| 737 | struct v4l2_subdev_format format; |
| 738 | struct v4l2_subdev *subdev; |
| 739 | u32 pad; |
| 740 | int ret; |
| 741 | |
| 742 | subdev = isp_video_remote_subdev(video, &pad); |
| 743 | if (subdev == NULL) |
| 744 | return -EINVAL; |
| 745 | |
| 746 | /* Try the get crop operation first and fallback to get format if not |
| 747 | * implemented. |
| 748 | */ |
| 749 | ret = v4l2_subdev_call(subdev, video, g_crop, crop); |
| 750 | if (ret != -ENOIOCTLCMD) |
| 751 | return ret; |
| 752 | |
| 753 | format.pad = pad; |
| 754 | format.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 755 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &format); |
| 756 | if (ret < 0) |
Wanlong Gao | a694f1b | 2012-08-27 04:23:15 -0300 | [diff] [blame] | 757 | return ret == -ENOIOCTLCMD ? -ENOTTY : ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 758 | |
| 759 | crop->c.left = 0; |
| 760 | crop->c.top = 0; |
| 761 | crop->c.width = format.format.width; |
| 762 | crop->c.height = format.format.height; |
| 763 | |
| 764 | return 0; |
| 765 | } |
| 766 | |
| 767 | static int |
Laurent Pinchart | 1fa48cd | 2012-10-12 11:28:40 -0300 | [diff] [blame] | 768 | isp_video_set_crop(struct file *file, void *fh, const struct v4l2_crop *crop) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 769 | { |
| 770 | struct isp_video *video = video_drvdata(file); |
| 771 | struct v4l2_subdev *subdev; |
| 772 | int ret; |
| 773 | |
| 774 | subdev = isp_video_remote_subdev(video, NULL); |
| 775 | if (subdev == NULL) |
| 776 | return -EINVAL; |
| 777 | |
| 778 | mutex_lock(&video->mutex); |
| 779 | ret = v4l2_subdev_call(subdev, video, s_crop, crop); |
| 780 | mutex_unlock(&video->mutex); |
| 781 | |
Wanlong Gao | a694f1b | 2012-08-27 04:23:15 -0300 | [diff] [blame] | 782 | return ret == -ENOIOCTLCMD ? -ENOTTY : ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | static int |
| 786 | isp_video_get_param(struct file *file, void *fh, struct v4l2_streamparm *a) |
| 787 | { |
| 788 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 789 | struct isp_video *video = video_drvdata(file); |
| 790 | |
| 791 | if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || |
| 792 | video->type != a->type) |
| 793 | return -EINVAL; |
| 794 | |
| 795 | memset(a, 0, sizeof(*a)); |
| 796 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| 797 | a->parm.output.capability = V4L2_CAP_TIMEPERFRAME; |
| 798 | a->parm.output.timeperframe = vfh->timeperframe; |
| 799 | |
| 800 | return 0; |
| 801 | } |
| 802 | |
| 803 | static int |
| 804 | isp_video_set_param(struct file *file, void *fh, struct v4l2_streamparm *a) |
| 805 | { |
| 806 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 807 | struct isp_video *video = video_drvdata(file); |
| 808 | |
| 809 | if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || |
| 810 | video->type != a->type) |
| 811 | return -EINVAL; |
| 812 | |
| 813 | if (a->parm.output.timeperframe.denominator == 0) |
| 814 | a->parm.output.timeperframe.denominator = 1; |
| 815 | |
| 816 | vfh->timeperframe = a->parm.output.timeperframe; |
| 817 | |
| 818 | return 0; |
| 819 | } |
| 820 | |
| 821 | static int |
| 822 | isp_video_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *rb) |
| 823 | { |
| 824 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 825 | struct isp_video *video = video_drvdata(file); |
| 826 | int ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 827 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 828 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 829 | ret = vb2_reqbufs(&vfh->queue, rb); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 830 | mutex_unlock(&video->queue_lock); |
| 831 | |
| 832 | return ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | static int |
| 836 | isp_video_querybuf(struct file *file, void *fh, struct v4l2_buffer *b) |
| 837 | { |
| 838 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 839 | struct isp_video *video = video_drvdata(file); |
| 840 | int ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 841 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 842 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 843 | ret = vb2_querybuf(&vfh->queue, b); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 844 | mutex_unlock(&video->queue_lock); |
| 845 | |
| 846 | return ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | static int |
| 850 | isp_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) |
| 851 | { |
| 852 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 853 | struct isp_video *video = video_drvdata(file); |
| 854 | int ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 855 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 856 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 857 | ret = vb2_qbuf(&vfh->queue, b); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 858 | mutex_unlock(&video->queue_lock); |
| 859 | |
| 860 | return ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 861 | } |
| 862 | |
| 863 | static int |
| 864 | isp_video_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b) |
| 865 | { |
| 866 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 867 | struct isp_video *video = video_drvdata(file); |
| 868 | int ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 869 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 870 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 871 | ret = vb2_dqbuf(&vfh->queue, b, file->f_flags & O_NONBLOCK); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 872 | mutex_unlock(&video->queue_lock); |
| 873 | |
| 874 | return ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 875 | } |
| 876 | |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 877 | static int isp_video_check_external_subdevs(struct isp_video *video, |
| 878 | struct isp_pipeline *pipe) |
| 879 | { |
| 880 | struct isp_device *isp = video->isp; |
| 881 | struct media_entity *ents[] = { |
| 882 | &isp->isp_csi2a.subdev.entity, |
| 883 | &isp->isp_csi2c.subdev.entity, |
| 884 | &isp->isp_ccp2.subdev.entity, |
| 885 | &isp->isp_ccdc.subdev.entity |
| 886 | }; |
| 887 | struct media_pad *source_pad; |
| 888 | struct media_entity *source = NULL; |
| 889 | struct media_entity *sink; |
| 890 | struct v4l2_subdev_format fmt; |
| 891 | struct v4l2_ext_controls ctrls; |
| 892 | struct v4l2_ext_control ctrl; |
| 893 | unsigned int i; |
Laurent Pinchart | 7c486c0 | 2014-02-14 21:45:50 -0300 | [diff] [blame] | 894 | int ret; |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 895 | |
Laurent Pinchart | 4b2f1ed | 2014-02-14 21:40:48 -0300 | [diff] [blame] | 896 | /* Memory-to-memory pipelines have no external subdev. */ |
| 897 | if (pipe->input != NULL) |
| 898 | return 0; |
| 899 | |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 900 | for (i = 0; i < ARRAY_SIZE(ents); i++) { |
| 901 | /* Is the entity part of the pipeline? */ |
| 902 | if (!(pipe->entities & (1 << ents[i]->id))) |
| 903 | continue; |
| 904 | |
| 905 | /* ISP entities have always sink pad == 0. Find source. */ |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 906 | source_pad = media_entity_remote_pad(&ents[i]->pads[0]); |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 907 | if (source_pad == NULL) |
| 908 | continue; |
| 909 | |
| 910 | source = source_pad->entity; |
| 911 | sink = ents[i]; |
| 912 | break; |
| 913 | } |
| 914 | |
| 915 | if (!source) { |
| 916 | dev_warn(isp->dev, "can't find source, failing now\n"); |
Laurent Pinchart | 7c486c0 | 2014-02-14 21:45:50 -0300 | [diff] [blame] | 917 | return -EINVAL; |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 918 | } |
| 919 | |
| 920 | if (media_entity_type(source) != MEDIA_ENT_T_V4L2_SUBDEV) |
| 921 | return 0; |
| 922 | |
| 923 | pipe->external = media_entity_to_v4l2_subdev(source); |
| 924 | |
| 925 | fmt.pad = source_pad->index; |
| 926 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 927 | ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(sink), |
| 928 | pad, get_fmt, NULL, &fmt); |
| 929 | if (unlikely(ret < 0)) { |
| 930 | dev_warn(isp->dev, "get_fmt returned null!\n"); |
| 931 | return ret; |
| 932 | } |
| 933 | |
Laurent Pinchart | 1697e49 | 2011-08-31 11:57:12 -0300 | [diff] [blame] | 934 | pipe->external_width = |
| 935 | omap3isp_video_format_info(fmt.format.code)->width; |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 936 | |
| 937 | memset(&ctrls, 0, sizeof(ctrls)); |
| 938 | memset(&ctrl, 0, sizeof(ctrl)); |
| 939 | |
| 940 | ctrl.id = V4L2_CID_PIXEL_RATE; |
| 941 | |
| 942 | ctrls.count = 1; |
| 943 | ctrls.controls = &ctrl; |
| 944 | |
| 945 | ret = v4l2_g_ext_ctrls(pipe->external->ctrl_handler, &ctrls); |
| 946 | if (ret < 0) { |
| 947 | dev_warn(isp->dev, "no pixel rate control in subdev %s\n", |
| 948 | pipe->external->name); |
| 949 | return ret; |
| 950 | } |
| 951 | |
| 952 | pipe->external_rate = ctrl.value64; |
| 953 | |
Sakari Ailus | a6d7a62 | 2012-02-25 20:42:07 -0300 | [diff] [blame] | 954 | if (pipe->entities & (1 << isp->isp_ccdc.subdev.entity.id)) { |
| 955 | unsigned int rate = UINT_MAX; |
| 956 | /* |
| 957 | * Check that maximum allowed CCDC pixel rate isn't |
| 958 | * exceeded by the pixel rate. |
| 959 | */ |
| 960 | omap3isp_ccdc_max_rate(&isp->isp_ccdc, &rate); |
| 961 | if (pipe->external_rate > rate) |
| 962 | return -ENOSPC; |
| 963 | } |
| 964 | |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 965 | return 0; |
| 966 | } |
| 967 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 968 | /* |
| 969 | * Stream management |
| 970 | * |
| 971 | * Every ISP pipeline has a single input and a single output. The input can be |
| 972 | * either a sensor or a video node. The output is always a video node. |
| 973 | * |
| 974 | * As every pipeline has an output video node, the ISP video objects at the |
| 975 | * pipeline output stores the pipeline state. It tracks the streaming state of |
| 976 | * both the input and output, as well as the availability of buffers. |
| 977 | * |
| 978 | * In sensor-to-memory mode, frames are always available at the pipeline input. |
| 979 | * Starting the sensor usually requires I2C transfers and must be done in |
| 980 | * interruptible context. The pipeline is started and stopped synchronously |
| 981 | * to the stream on/off commands. All modules in the pipeline will get their |
| 982 | * subdev set stream handler called. The module at the end of the pipeline must |
| 983 | * delay starting the hardware until buffers are available at its output. |
| 984 | * |
| 985 | * In memory-to-memory mode, starting/stopping the stream requires |
| 986 | * synchronization between the input and output. ISP modules can't be stopped |
| 987 | * in the middle of a frame, and at least some of the modules seem to become |
| 988 | * busy as soon as they're started, even if they don't receive a frame start |
| 989 | * event. For that reason frames need to be processed in single-shot mode. The |
| 990 | * driver needs to wait until a frame is completely processed and written to |
| 991 | * memory before restarting the pipeline for the next frame. Pipelined |
| 992 | * processing might be possible but requires more testing. |
| 993 | * |
| 994 | * Stream start must be delayed until buffers are available at both the input |
| 995 | * and output. The pipeline must be started in the videobuf queue callback with |
| 996 | * the buffers queue spinlock held. The modules subdev set stream operation must |
| 997 | * not sleep. |
| 998 | */ |
| 999 | static int |
| 1000 | isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) |
| 1001 | { |
| 1002 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 1003 | struct isp_video *video = video_drvdata(file); |
| 1004 | enum isp_pipeline_state state; |
| 1005 | struct isp_pipeline *pipe; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1006 | unsigned long flags; |
| 1007 | int ret; |
| 1008 | |
| 1009 | if (type != video->type) |
| 1010 | return -EINVAL; |
| 1011 | |
| 1012 | mutex_lock(&video->stream_lock); |
| 1013 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1014 | /* Start streaming on the pipeline. No link touching an entity in the |
| 1015 | * pipeline can be activated or deactivated once streaming is started. |
| 1016 | */ |
| 1017 | pipe = video->video.entity.pipe |
| 1018 | ? to_isp_pipeline(&video->video.entity) : &video->pipe; |
Sakari Ailus | b0cd79e | 2012-01-16 18:59:02 -0300 | [diff] [blame] | 1019 | |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 1020 | pipe->entities = 0; |
| 1021 | |
Sakari Ailus | b0cd79e | 2012-01-16 18:59:02 -0300 | [diff] [blame] | 1022 | if (video->isp->pdata->set_constraints) |
| 1023 | video->isp->pdata->set_constraints(video->isp, true); |
| 1024 | pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]); |
| 1025 | pipe->max_rate = pipe->l3_ick; |
| 1026 | |
Sakari Ailus | da39257 | 2011-10-10 17:05:24 -0300 | [diff] [blame] | 1027 | ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe); |
| 1028 | if (ret < 0) |
| 1029 | goto err_pipeline_start; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1030 | |
| 1031 | /* Verify that the currently configured format matches the output of |
| 1032 | * the connected subdev. |
| 1033 | */ |
| 1034 | ret = isp_video_check_format(video, vfh); |
| 1035 | if (ret < 0) |
Sakari Ailus | da39257 | 2011-10-10 17:05:24 -0300 | [diff] [blame] | 1036 | goto err_check_format; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1037 | |
| 1038 | video->bpl_padding = ret; |
| 1039 | video->bpl_value = vfh->format.fmt.pix.bytesperline; |
| 1040 | |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 1041 | ret = isp_video_get_graph_data(video, pipe); |
| 1042 | if (ret < 0) |
| 1043 | goto err_check_format; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1044 | |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 1045 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1046 | state = ISP_PIPELINE_STREAM_OUTPUT | ISP_PIPELINE_IDLE_OUTPUT; |
Sakari Ailus | ae5df81 | 2012-03-05 20:22:41 -0300 | [diff] [blame] | 1047 | else |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1048 | state = ISP_PIPELINE_STREAM_INPUT | ISP_PIPELINE_IDLE_INPUT; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1049 | |
Sakari Ailus | ccddd91 | 2012-01-17 12:29:38 -0300 | [diff] [blame] | 1050 | ret = isp_video_check_external_subdevs(video, pipe); |
| 1051 | if (ret < 0) |
| 1052 | goto err_check_format; |
| 1053 | |
Laurent Pinchart | 875e2e3 | 2011-12-07 08:34:50 -0300 | [diff] [blame] | 1054 | pipe->error = false; |
| 1055 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1056 | spin_lock_irqsave(&pipe->lock, flags); |
| 1057 | pipe->state &= ~ISP_PIPELINE_STREAM; |
| 1058 | pipe->state |= state; |
| 1059 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 1060 | |
| 1061 | /* Set the maximum time per frame as the value requested by userspace. |
| 1062 | * This is a soft limit that can be overridden if the hardware doesn't |
| 1063 | * support the request limit. |
| 1064 | */ |
| 1065 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 1066 | pipe->max_timeperframe = vfh->timeperframe; |
| 1067 | |
| 1068 | video->queue = &vfh->queue; |
| 1069 | INIT_LIST_HEAD(&video->dmaqueue); |
| 1070 | atomic_set(&pipe->frame_number, -1); |
Laurent Pinchart | 9a36d8e | 2014-05-19 16:37:38 -0300 | [diff] [blame] | 1071 | pipe->field = vfh->format.fmt.pix.field; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1072 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1073 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1074 | ret = vb2_streamon(&vfh->queue, type); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1075 | mutex_unlock(&video->queue_lock); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1076 | if (ret < 0) |
Sakari Ailus | da39257 | 2011-10-10 17:05:24 -0300 | [diff] [blame] | 1077 | goto err_check_format; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1078 | |
| 1079 | /* In sensor-to-memory mode, the stream can be started synchronously |
| 1080 | * to the stream on command. In memory-to-memory mode, it will be |
| 1081 | * started when buffers are queued on both the input and output. |
| 1082 | */ |
| 1083 | if (pipe->input == NULL) { |
| 1084 | ret = omap3isp_pipeline_set_stream(pipe, |
| 1085 | ISP_PIPELINE_STREAM_CONTINUOUS); |
| 1086 | if (ret < 0) |
Sakari Ailus | da39257 | 2011-10-10 17:05:24 -0300 | [diff] [blame] | 1087 | goto err_set_stream; |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1088 | spin_lock_irqsave(&video->irqlock, flags); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1089 | if (list_empty(&video->dmaqueue)) |
| 1090 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1091 | spin_unlock_irqrestore(&video->irqlock, flags); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1092 | } |
| 1093 | |
Sakari Ailus | da39257 | 2011-10-10 17:05:24 -0300 | [diff] [blame] | 1094 | mutex_unlock(&video->stream_lock); |
| 1095 | return 0; |
| 1096 | |
| 1097 | err_set_stream: |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1098 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1099 | vb2_streamoff(&vfh->queue, type); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1100 | mutex_unlock(&video->queue_lock); |
Sakari Ailus | da39257 | 2011-10-10 17:05:24 -0300 | [diff] [blame] | 1101 | err_check_format: |
| 1102 | media_entity_pipeline_stop(&video->video.entity); |
| 1103 | err_pipeline_start: |
| 1104 | if (video->isp->pdata->set_constraints) |
| 1105 | video->isp->pdata->set_constraints(video->isp, false); |
| 1106 | /* The DMA queue must be emptied here, otherwise CCDC interrupts that |
| 1107 | * will get triggered the next time the CCDC is powered up will try to |
| 1108 | * access buffers that might have been freed but still present in the |
| 1109 | * DMA queue. This can easily get triggered if the above |
| 1110 | * omap3isp_pipeline_set_stream() call fails on a system with a |
| 1111 | * free-running sensor. |
| 1112 | */ |
| 1113 | INIT_LIST_HEAD(&video->dmaqueue); |
| 1114 | video->queue = NULL; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1115 | |
| 1116 | mutex_unlock(&video->stream_lock); |
| 1117 | return ret; |
| 1118 | } |
| 1119 | |
| 1120 | static int |
| 1121 | isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) |
| 1122 | { |
| 1123 | struct isp_video_fh *vfh = to_isp_video_fh(fh); |
| 1124 | struct isp_video *video = video_drvdata(file); |
| 1125 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); |
| 1126 | enum isp_pipeline_state state; |
| 1127 | unsigned int streaming; |
| 1128 | unsigned long flags; |
| 1129 | |
| 1130 | if (type != video->type) |
| 1131 | return -EINVAL; |
| 1132 | |
| 1133 | mutex_lock(&video->stream_lock); |
| 1134 | |
| 1135 | /* Make sure we're not streaming yet. */ |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1136 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1137 | streaming = vb2_is_streaming(&vfh->queue); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1138 | mutex_unlock(&video->queue_lock); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1139 | |
| 1140 | if (!streaming) |
| 1141 | goto done; |
| 1142 | |
| 1143 | /* Update the pipeline state. */ |
| 1144 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1145 | state = ISP_PIPELINE_STREAM_OUTPUT |
| 1146 | | ISP_PIPELINE_QUEUE_OUTPUT; |
| 1147 | else |
| 1148 | state = ISP_PIPELINE_STREAM_INPUT |
| 1149 | | ISP_PIPELINE_QUEUE_INPUT; |
| 1150 | |
| 1151 | spin_lock_irqsave(&pipe->lock, flags); |
| 1152 | pipe->state &= ~state; |
| 1153 | spin_unlock_irqrestore(&pipe->lock, flags); |
| 1154 | |
| 1155 | /* Stop the stream. */ |
| 1156 | omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_STOPPED); |
Laurent Pinchart | 0834449 | 2014-04-20 20:59:03 -0300 | [diff] [blame] | 1157 | omap3isp_video_cancel_stream(video); |
| 1158 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1159 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1160 | vb2_streamoff(&vfh->queue, type); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1161 | mutex_unlock(&video->queue_lock); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1162 | video->queue = NULL; |
Laurent Pinchart | 661112c | 2013-12-09 11:36:51 -0300 | [diff] [blame] | 1163 | video->error = false; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1164 | |
Laurent Pinchart | 4b0ec19 | 2011-03-03 10:05:22 -0300 | [diff] [blame] | 1165 | if (video->isp->pdata->set_constraints) |
| 1166 | video->isp->pdata->set_constraints(video->isp, false); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1167 | media_entity_pipeline_stop(&video->video.entity); |
| 1168 | |
| 1169 | done: |
| 1170 | mutex_unlock(&video->stream_lock); |
| 1171 | return 0; |
| 1172 | } |
| 1173 | |
| 1174 | static int |
| 1175 | isp_video_enum_input(struct file *file, void *fh, struct v4l2_input *input) |
| 1176 | { |
| 1177 | if (input->index > 0) |
| 1178 | return -EINVAL; |
| 1179 | |
| 1180 | strlcpy(input->name, "camera", sizeof(input->name)); |
| 1181 | input->type = V4L2_INPUT_TYPE_CAMERA; |
| 1182 | |
| 1183 | return 0; |
| 1184 | } |
| 1185 | |
| 1186 | static int |
| 1187 | isp_video_g_input(struct file *file, void *fh, unsigned int *input) |
| 1188 | { |
| 1189 | *input = 0; |
| 1190 | |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
| 1194 | static int |
| 1195 | isp_video_s_input(struct file *file, void *fh, unsigned int input) |
| 1196 | { |
| 1197 | return input == 0 ? 0 : -EINVAL; |
| 1198 | } |
| 1199 | |
| 1200 | static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { |
| 1201 | .vidioc_querycap = isp_video_querycap, |
| 1202 | .vidioc_g_fmt_vid_cap = isp_video_get_format, |
| 1203 | .vidioc_s_fmt_vid_cap = isp_video_set_format, |
| 1204 | .vidioc_try_fmt_vid_cap = isp_video_try_format, |
| 1205 | .vidioc_g_fmt_vid_out = isp_video_get_format, |
| 1206 | .vidioc_s_fmt_vid_out = isp_video_set_format, |
| 1207 | .vidioc_try_fmt_vid_out = isp_video_try_format, |
| 1208 | .vidioc_cropcap = isp_video_cropcap, |
| 1209 | .vidioc_g_crop = isp_video_get_crop, |
| 1210 | .vidioc_s_crop = isp_video_set_crop, |
| 1211 | .vidioc_g_parm = isp_video_get_param, |
| 1212 | .vidioc_s_parm = isp_video_set_param, |
| 1213 | .vidioc_reqbufs = isp_video_reqbufs, |
| 1214 | .vidioc_querybuf = isp_video_querybuf, |
| 1215 | .vidioc_qbuf = isp_video_qbuf, |
| 1216 | .vidioc_dqbuf = isp_video_dqbuf, |
| 1217 | .vidioc_streamon = isp_video_streamon, |
| 1218 | .vidioc_streamoff = isp_video_streamoff, |
| 1219 | .vidioc_enum_input = isp_video_enum_input, |
| 1220 | .vidioc_g_input = isp_video_g_input, |
| 1221 | .vidioc_s_input = isp_video_s_input, |
| 1222 | }; |
| 1223 | |
| 1224 | /* ----------------------------------------------------------------------------- |
| 1225 | * V4L2 file operations |
| 1226 | */ |
| 1227 | |
| 1228 | static int isp_video_open(struct file *file) |
| 1229 | { |
| 1230 | struct isp_video *video = video_drvdata(file); |
| 1231 | struct isp_video_fh *handle; |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1232 | struct vb2_queue *queue; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1233 | int ret = 0; |
| 1234 | |
| 1235 | handle = kzalloc(sizeof(*handle), GFP_KERNEL); |
| 1236 | if (handle == NULL) |
| 1237 | return -ENOMEM; |
| 1238 | |
| 1239 | v4l2_fh_init(&handle->vfh, &video->video); |
| 1240 | v4l2_fh_add(&handle->vfh); |
| 1241 | |
| 1242 | /* If this is the first user, initialise the pipeline. */ |
| 1243 | if (omap3isp_get(video->isp) == NULL) { |
| 1244 | ret = -EBUSY; |
| 1245 | goto done; |
| 1246 | } |
| 1247 | |
| 1248 | ret = omap3isp_pipeline_pm_use(&video->video.entity, 1); |
| 1249 | if (ret < 0) { |
| 1250 | omap3isp_put(video->isp); |
| 1251 | goto done; |
| 1252 | } |
| 1253 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1254 | queue = &handle->queue; |
| 1255 | queue->type = video->type; |
| 1256 | queue->io_modes = VB2_MMAP | VB2_USERPTR; |
| 1257 | queue->drv_priv = handle; |
| 1258 | queue->ops = &isp_video_queue_ops; |
| 1259 | queue->mem_ops = &vb2_dma_contig_memops; |
| 1260 | queue->buf_struct_size = sizeof(struct isp_buffer); |
| 1261 | queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| 1262 | |
| 1263 | ret = vb2_queue_init(&handle->queue); |
| 1264 | if (ret < 0) { |
| 1265 | omap3isp_put(video->isp); |
| 1266 | goto done; |
| 1267 | } |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1268 | |
| 1269 | memset(&handle->format, 0, sizeof(handle->format)); |
| 1270 | handle->format.type = video->type; |
| 1271 | handle->timeperframe.denominator = 1; |
| 1272 | |
| 1273 | handle->video = video; |
| 1274 | file->private_data = &handle->vfh; |
| 1275 | |
| 1276 | done: |
| 1277 | if (ret < 0) { |
| 1278 | v4l2_fh_del(&handle->vfh); |
| 1279 | kfree(handle); |
| 1280 | } |
| 1281 | |
| 1282 | return ret; |
| 1283 | } |
| 1284 | |
| 1285 | static int isp_video_release(struct file *file) |
| 1286 | { |
| 1287 | struct isp_video *video = video_drvdata(file); |
| 1288 | struct v4l2_fh *vfh = file->private_data; |
| 1289 | struct isp_video_fh *handle = to_isp_video_fh(vfh); |
| 1290 | |
| 1291 | /* Disable streaming and free the buffers queue resources. */ |
| 1292 | isp_video_streamoff(file, vfh, video->type); |
| 1293 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1294 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1295 | vb2_queue_release(&handle->queue); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1296 | mutex_unlock(&video->queue_lock); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1297 | |
| 1298 | omap3isp_pipeline_pm_use(&video->video.entity, 0); |
| 1299 | |
| 1300 | /* Release the file handle. */ |
| 1301 | v4l2_fh_del(vfh); |
| 1302 | kfree(handle); |
| 1303 | file->private_data = NULL; |
| 1304 | |
| 1305 | omap3isp_put(video->isp); |
| 1306 | |
| 1307 | return 0; |
| 1308 | } |
| 1309 | |
| 1310 | static unsigned int isp_video_poll(struct file *file, poll_table *wait) |
| 1311 | { |
| 1312 | struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1313 | struct isp_video *video = video_drvdata(file); |
| 1314 | int ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1315 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1316 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1317 | ret = vb2_poll(&vfh->queue, file, wait); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1318 | mutex_unlock(&video->queue_lock); |
| 1319 | |
| 1320 | return ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1321 | } |
| 1322 | |
| 1323 | static int isp_video_mmap(struct file *file, struct vm_area_struct *vma) |
| 1324 | { |
| 1325 | struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1326 | struct isp_video *video = video_drvdata(file); |
| 1327 | int ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1328 | |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1329 | mutex_lock(&video->queue_lock); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1330 | ret = vb2_mmap(&vfh->queue, vma); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1331 | mutex_unlock(&video->queue_lock); |
| 1332 | |
| 1333 | return ret; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1334 | } |
| 1335 | |
| 1336 | static struct v4l2_file_operations isp_video_fops = { |
| 1337 | .owner = THIS_MODULE, |
| 1338 | .unlocked_ioctl = video_ioctl2, |
| 1339 | .open = isp_video_open, |
| 1340 | .release = isp_video_release, |
| 1341 | .poll = isp_video_poll, |
| 1342 | .mmap = isp_video_mmap, |
| 1343 | }; |
| 1344 | |
| 1345 | /* ----------------------------------------------------------------------------- |
| 1346 | * ISP video core |
| 1347 | */ |
| 1348 | |
| 1349 | static const struct isp_video_operations isp_video_dummy_ops = { |
| 1350 | }; |
| 1351 | |
| 1352 | int omap3isp_video_init(struct isp_video *video, const char *name) |
| 1353 | { |
| 1354 | const char *direction; |
| 1355 | int ret; |
| 1356 | |
| 1357 | switch (video->type) { |
| 1358 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 1359 | direction = "output"; |
Sakari Ailus | 8dad936 | 2013-10-02 20:17:52 -0300 | [diff] [blame] | 1360 | video->pad.flags = MEDIA_PAD_FL_SINK |
| 1361 | | MEDIA_PAD_FL_MUST_CONNECT; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1362 | break; |
| 1363 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| 1364 | direction = "input"; |
Sakari Ailus | 8dad936 | 2013-10-02 20:17:52 -0300 | [diff] [blame] | 1365 | video->pad.flags = MEDIA_PAD_FL_SOURCE |
| 1366 | | MEDIA_PAD_FL_MUST_CONNECT; |
Hans Verkuil | 954f340 | 2012-09-05 06:05:50 -0300 | [diff] [blame] | 1367 | video->video.vfl_dir = VFL_DIR_TX; |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1368 | break; |
| 1369 | |
| 1370 | default: |
| 1371 | return -EINVAL; |
| 1372 | } |
| 1373 | |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1374 | video->alloc_ctx = vb2_dma_contig_init_ctx(video->isp->dev); |
| 1375 | if (IS_ERR(video->alloc_ctx)) |
| 1376 | return PTR_ERR(video->alloc_ctx); |
| 1377 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1378 | ret = media_entity_init(&video->video.entity, 1, &video->pad, 0); |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1379 | if (ret < 0) { |
| 1380 | vb2_dma_contig_cleanup_ctx(video->alloc_ctx); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1381 | return ret; |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1382 | } |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1383 | |
| 1384 | mutex_init(&video->mutex); |
| 1385 | atomic_set(&video->active, 0); |
| 1386 | |
| 1387 | spin_lock_init(&video->pipe.lock); |
| 1388 | mutex_init(&video->stream_lock); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1389 | mutex_init(&video->queue_lock); |
Laurent Pinchart | e8feb87 | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1390 | spin_lock_init(&video->irqlock); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1391 | |
| 1392 | /* Initialize the video device. */ |
| 1393 | if (video->ops == NULL) |
| 1394 | video->ops = &isp_video_dummy_ops; |
| 1395 | |
| 1396 | video->video.fops = &isp_video_fops; |
| 1397 | snprintf(video->video.name, sizeof(video->video.name), |
| 1398 | "OMAP3 ISP %s %s", name, direction); |
| 1399 | video->video.vfl_type = VFL_TYPE_GRABBER; |
| 1400 | video->video.release = video_device_release_empty; |
| 1401 | video->video.ioctl_ops = &isp_video_ioctl_ops; |
| 1402 | video->pipe.stream_state = ISP_PIPELINE_STREAM_STOPPED; |
| 1403 | |
| 1404 | video_set_drvdata(&video->video, video); |
| 1405 | |
| 1406 | return 0; |
| 1407 | } |
| 1408 | |
Laurent Pinchart | 63b4ca2 | 2011-09-22 16:54:34 -0300 | [diff] [blame] | 1409 | void omap3isp_video_cleanup(struct isp_video *video) |
| 1410 | { |
Laurent Pinchart | fbac140 | 2014-03-09 20:36:15 -0300 | [diff] [blame] | 1411 | vb2_dma_contig_cleanup_ctx(video->alloc_ctx); |
Laurent Pinchart | 63b4ca2 | 2011-09-22 16:54:34 -0300 | [diff] [blame] | 1412 | media_entity_cleanup(&video->video.entity); |
Laurent Pinchart | 988d54c | 2014-03-09 20:57:53 -0300 | [diff] [blame] | 1413 | mutex_destroy(&video->queue_lock); |
Laurent Pinchart | ed33ac8 | 2011-09-22 17:09:26 -0300 | [diff] [blame] | 1414 | mutex_destroy(&video->stream_lock); |
| 1415 | mutex_destroy(&video->mutex); |
Laurent Pinchart | 63b4ca2 | 2011-09-22 16:54:34 -0300 | [diff] [blame] | 1416 | } |
| 1417 | |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1418 | int omap3isp_video_register(struct isp_video *video, struct v4l2_device *vdev) |
| 1419 | { |
| 1420 | int ret; |
| 1421 | |
| 1422 | video->video.v4l2_dev = vdev; |
| 1423 | |
| 1424 | ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1); |
| 1425 | if (ret < 0) |
Laurent Pinchart | 4feca39 | 2012-10-22 08:28:51 -0300 | [diff] [blame] | 1426 | dev_err(video->isp->dev, |
| 1427 | "%s: could not register video device (%d)\n", |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1428 | __func__, ret); |
| 1429 | |
| 1430 | return ret; |
| 1431 | } |
| 1432 | |
| 1433 | void omap3isp_video_unregister(struct isp_video *video) |
| 1434 | { |
Laurent Pinchart | 63b4ca2 | 2011-09-22 16:54:34 -0300 | [diff] [blame] | 1435 | if (video_is_registered(&video->video)) |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1436 | video_unregister_device(&video->video); |
Laurent Pinchart | ad614ac | 2011-02-12 18:05:06 -0300 | [diff] [blame] | 1437 | } |