| 1 | /* |
| 2 | em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB |
| 3 | video capture devices |
| 4 | |
| 5 | Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> |
| 6 | Markus Rechberger <mrechberger@gmail.com> |
| 7 | Mauro Carvalho Chehab <mchehab@infradead.org> |
| 8 | Sascha Sommer <saschasommer@freenet.de> |
| 9 | Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com> |
| 10 | |
| 11 | Some parts based on SN9C10x PC Camera Controllers GPL driver made |
| 12 | by Luca Risolia <luca.risolia@studio.unibo.it> |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or modify |
| 15 | it under the terms of the GNU General Public License as published by |
| 16 | the Free Software Foundation; either version 2 of the License, or |
| 17 | (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, |
| 20 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | GNU General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 27 | */ |
| 28 | |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/list.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/bitmap.h> |
| 34 | #include <linux/usb.h> |
| 35 | #include <linux/i2c.h> |
| 36 | #include <linux/mm.h> |
| 37 | #include <linux/mutex.h> |
| 38 | #include <linux/slab.h> |
| 39 | |
| 40 | #include "em28xx.h" |
| 41 | #include "em28xx-v4l.h" |
| 42 | #include <media/v4l2-common.h> |
| 43 | #include <media/v4l2-ioctl.h> |
| 44 | #include <media/v4l2-event.h> |
| 45 | #include <media/v4l2-clk.h> |
| 46 | #include <media/drv-intf/msp3400.h> |
| 47 | #include <media/tuner.h> |
| 48 | |
| 49 | #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ |
| 50 | "Markus Rechberger <mrechberger@gmail.com>, " \ |
| 51 | "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ |
| 52 | "Sascha Sommer <saschasommer@freenet.de>" |
| 53 | |
| 54 | static unsigned int isoc_debug; |
| 55 | module_param(isoc_debug, int, 0644); |
| 56 | MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); |
| 57 | |
| 58 | static unsigned int disable_vbi; |
| 59 | module_param(disable_vbi, int, 0644); |
| 60 | MODULE_PARM_DESC(disable_vbi, "disable vbi support"); |
| 61 | |
| 62 | static int alt; |
| 63 | module_param(alt, int, 0644); |
| 64 | MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint"); |
| 65 | |
| 66 | #define em28xx_videodbg(fmt, arg...) do {\ |
| 67 | if (video_debug) \ |
| 68 | printk(KERN_INFO "%s %s :"fmt, \ |
| 69 | dev->name, __func__ , ##arg); } while (0) |
| 70 | |
| 71 | #define em28xx_isocdbg(fmt, arg...) \ |
| 72 | do {\ |
| 73 | if (isoc_debug) { \ |
| 74 | printk(KERN_INFO "%s %s :"fmt, \ |
| 75 | dev->name, __func__ , ##arg); \ |
| 76 | } \ |
| 77 | } while (0) |
| 78 | |
| 79 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 80 | MODULE_DESCRIPTION(DRIVER_DESC " - v4l2 interface"); |
| 81 | MODULE_LICENSE("GPL"); |
| 82 | MODULE_VERSION(EM28XX_VERSION); |
| 83 | |
| 84 | #define EM25XX_FRMDATAHDR_BYTE1 0x02 |
| 85 | #define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE 0x20 |
| 86 | #define EM25XX_FRMDATAHDR_BYTE2_FRAME_END 0x02 |
| 87 | #define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID 0x01 |
| 88 | #define EM25XX_FRMDATAHDR_BYTE2_MASK (EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \ |
| 89 | EM25XX_FRMDATAHDR_BYTE2_FRAME_END | \ |
| 90 | EM25XX_FRMDATAHDR_BYTE2_FRAME_ID) |
| 91 | |
| 92 | static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; |
| 93 | static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; |
| 94 | static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; |
| 95 | |
| 96 | module_param_array(video_nr, int, NULL, 0444); |
| 97 | module_param_array(vbi_nr, int, NULL, 0444); |
| 98 | module_param_array(radio_nr, int, NULL, 0444); |
| 99 | MODULE_PARM_DESC(video_nr, "video device numbers"); |
| 100 | MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); |
| 101 | MODULE_PARM_DESC(radio_nr, "radio device numbers"); |
| 102 | |
| 103 | static unsigned int video_debug; |
| 104 | module_param(video_debug, int, 0644); |
| 105 | MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); |
| 106 | |
| 107 | /* supported video standards */ |
| 108 | static struct em28xx_fmt format[] = { |
| 109 | { |
| 110 | .name = "16 bpp YUY2, 4:2:2, packed", |
| 111 | .fourcc = V4L2_PIX_FMT_YUYV, |
| 112 | .depth = 16, |
| 113 | .reg = EM28XX_OUTFMT_YUV422_Y0UY1V, |
| 114 | }, { |
| 115 | .name = "16 bpp RGB 565, LE", |
| 116 | .fourcc = V4L2_PIX_FMT_RGB565, |
| 117 | .depth = 16, |
| 118 | .reg = EM28XX_OUTFMT_RGB_16_656, |
| 119 | }, { |
| 120 | .name = "8 bpp Bayer BGBG..GRGR", |
| 121 | .fourcc = V4L2_PIX_FMT_SBGGR8, |
| 122 | .depth = 8, |
| 123 | .reg = EM28XX_OUTFMT_RGB_8_BGBG, |
| 124 | }, { |
| 125 | .name = "8 bpp Bayer GRGR..BGBG", |
| 126 | .fourcc = V4L2_PIX_FMT_SGRBG8, |
| 127 | .depth = 8, |
| 128 | .reg = EM28XX_OUTFMT_RGB_8_GRGR, |
| 129 | }, { |
| 130 | .name = "8 bpp Bayer GBGB..RGRG", |
| 131 | .fourcc = V4L2_PIX_FMT_SGBRG8, |
| 132 | .depth = 8, |
| 133 | .reg = EM28XX_OUTFMT_RGB_8_GBGB, |
| 134 | }, { |
| 135 | .name = "12 bpp YUV411", |
| 136 | .fourcc = V4L2_PIX_FMT_YUV411P, |
| 137 | .depth = 12, |
| 138 | .reg = EM28XX_OUTFMT_YUV411, |
| 139 | }, |
| 140 | }; |
| 141 | |
| 142 | /*FIXME: maxw should be dependent of alt mode */ |
| 143 | static inline unsigned int norm_maxw(struct em28xx *dev) |
| 144 | { |
| 145 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 146 | |
| 147 | if (dev->board.is_webcam) |
| 148 | return v4l2->sensor_xres; |
| 149 | |
| 150 | if (dev->board.max_range_640_480) |
| 151 | return 640; |
| 152 | |
| 153 | return 720; |
| 154 | } |
| 155 | |
| 156 | static inline unsigned int norm_maxh(struct em28xx *dev) |
| 157 | { |
| 158 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 159 | |
| 160 | if (dev->board.is_webcam) |
| 161 | return v4l2->sensor_yres; |
| 162 | |
| 163 | if (dev->board.max_range_640_480) |
| 164 | return 480; |
| 165 | |
| 166 | return (v4l2->norm & V4L2_STD_625_50) ? 576 : 480; |
| 167 | } |
| 168 | |
| 169 | static int em28xx_vbi_supported(struct em28xx *dev) |
| 170 | { |
| 171 | /* Modprobe option to manually disable */ |
| 172 | if (disable_vbi == 1) |
| 173 | return 0; |
| 174 | |
| 175 | if (dev->board.is_webcam) |
| 176 | return 0; |
| 177 | |
| 178 | /* FIXME: check subdevices for VBI support */ |
| 179 | |
| 180 | if (dev->chip_id == CHIP_ID_EM2860 || |
| 181 | dev->chip_id == CHIP_ID_EM2883) |
| 182 | return 1; |
| 183 | |
| 184 | /* Version of em28xx that does not support VBI */ |
| 185 | return 0; |
| 186 | } |
| 187 | |
| 188 | /* |
| 189 | * em28xx_wake_i2c() |
| 190 | * configure i2c attached devices |
| 191 | */ |
| 192 | static void em28xx_wake_i2c(struct em28xx *dev) |
| 193 | { |
| 194 | struct v4l2_device *v4l2_dev = &dev->v4l2->v4l2_dev; |
| 195 | |
| 196 | v4l2_device_call_all(v4l2_dev, 0, core, reset, 0); |
| 197 | v4l2_device_call_all(v4l2_dev, 0, video, s_routing, |
| 198 | INPUT(dev->ctl_input)->vmux, 0, 0); |
| 199 | } |
| 200 | |
| 201 | static int em28xx_colorlevels_set_default(struct em28xx *dev) |
| 202 | { |
| 203 | em28xx_write_reg(dev, EM28XX_R20_YGAIN, CONTRAST_DEFAULT); |
| 204 | em28xx_write_reg(dev, EM28XX_R21_YOFFSET, BRIGHTNESS_DEFAULT); |
| 205 | em28xx_write_reg(dev, EM28XX_R22_UVGAIN, SATURATION_DEFAULT); |
| 206 | em28xx_write_reg(dev, EM28XX_R23_UOFFSET, BLUE_BALANCE_DEFAULT); |
| 207 | em28xx_write_reg(dev, EM28XX_R24_VOFFSET, RED_BALANCE_DEFAULT); |
| 208 | em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, SHARPNESS_DEFAULT); |
| 209 | |
| 210 | em28xx_write_reg(dev, EM28XX_R14_GAMMA, 0x20); |
| 211 | em28xx_write_reg(dev, EM28XX_R15_RGAIN, 0x20); |
| 212 | em28xx_write_reg(dev, EM28XX_R16_GGAIN, 0x20); |
| 213 | em28xx_write_reg(dev, EM28XX_R17_BGAIN, 0x20); |
| 214 | em28xx_write_reg(dev, EM28XX_R18_ROFFSET, 0x00); |
| 215 | em28xx_write_reg(dev, EM28XX_R19_GOFFSET, 0x00); |
| 216 | return em28xx_write_reg(dev, EM28XX_R1A_BOFFSET, 0x00); |
| 217 | } |
| 218 | |
| 219 | static int em28xx_set_outfmt(struct em28xx *dev) |
| 220 | { |
| 221 | int ret; |
| 222 | u8 fmt, vinctrl; |
| 223 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 224 | |
| 225 | fmt = v4l2->format->reg; |
| 226 | if (!dev->is_em25xx) |
| 227 | fmt |= 0x20; |
| 228 | /* |
| 229 | * NOTE: it's not clear if this is really needed ! |
| 230 | * The datasheets say bit 5 is a reserved bit and devices seem to work |
| 231 | * fine without it. But the Windows driver sets it for em2710/50+em28xx |
| 232 | * devices and we've always been setting it, too. |
| 233 | * |
| 234 | * em2765 (em25xx, em276x/7x/8x) devices do NOT work with this bit set, |
| 235 | * it's likely used for an additional (compressed ?) format there. |
| 236 | */ |
| 237 | ret = em28xx_write_reg(dev, EM28XX_R27_OUTFMT, fmt); |
| 238 | if (ret < 0) |
| 239 | return ret; |
| 240 | |
| 241 | ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, v4l2->vinmode); |
| 242 | if (ret < 0) |
| 243 | return ret; |
| 244 | |
| 245 | vinctrl = v4l2->vinctl; |
| 246 | if (em28xx_vbi_supported(dev) == 1) { |
| 247 | vinctrl |= EM28XX_VINCTRL_VBI_RAW; |
| 248 | em28xx_write_reg(dev, EM28XX_R34_VBI_START_H, 0x00); |
| 249 | em28xx_write_reg(dev, EM28XX_R36_VBI_WIDTH, v4l2->vbi_width/4); |
| 250 | em28xx_write_reg(dev, EM28XX_R37_VBI_HEIGHT, v4l2->vbi_height); |
| 251 | if (v4l2->norm & V4L2_STD_525_60) { |
| 252 | /* NTSC */ |
| 253 | em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x09); |
| 254 | } else if (v4l2->norm & V4L2_STD_625_50) { |
| 255 | /* PAL */ |
| 256 | em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x07); |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, vinctrl); |
| 261 | } |
| 262 | |
| 263 | static int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, |
| 264 | u8 ymin, u8 ymax) |
| 265 | { |
| 266 | em28xx_videodbg("em28xx Scale: (%d,%d)-(%d,%d)\n", |
| 267 | xmin, ymin, xmax, ymax); |
| 268 | |
| 269 | em28xx_write_regs(dev, EM28XX_R28_XMIN, &xmin, 1); |
| 270 | em28xx_write_regs(dev, EM28XX_R29_XMAX, &xmax, 1); |
| 271 | em28xx_write_regs(dev, EM28XX_R2A_YMIN, &ymin, 1); |
| 272 | return em28xx_write_regs(dev, EM28XX_R2B_YMAX, &ymax, 1); |
| 273 | } |
| 274 | |
| 275 | static void em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart, |
| 276 | u16 width, u16 height) |
| 277 | { |
| 278 | u8 cwidth = width >> 2; |
| 279 | u8 cheight = height >> 2; |
| 280 | u8 overflow = (height >> 9 & 0x02) | (width >> 10 & 0x01); |
| 281 | /* NOTE: size limit: 2047x1023 = 2MPix */ |
| 282 | |
| 283 | em28xx_videodbg("capture area set to (%d,%d): %dx%d\n", |
| 284 | hstart, vstart, |
| 285 | ((overflow & 2) << 9 | cwidth << 2), |
| 286 | ((overflow & 1) << 10 | cheight << 2)); |
| 287 | |
| 288 | em28xx_write_regs(dev, EM28XX_R1C_HSTART, &hstart, 1); |
| 289 | em28xx_write_regs(dev, EM28XX_R1D_VSTART, &vstart, 1); |
| 290 | em28xx_write_regs(dev, EM28XX_R1E_CWIDTH, &cwidth, 1); |
| 291 | em28xx_write_regs(dev, EM28XX_R1F_CHEIGHT, &cheight, 1); |
| 292 | em28xx_write_regs(dev, EM28XX_R1B_OFLOW, &overflow, 1); |
| 293 | |
| 294 | /* FIXME: function/meaning of these registers ? */ |
| 295 | /* FIXME: align width+height to multiples of 4 ?! */ |
| 296 | if (dev->is_em25xx) { |
| 297 | em28xx_write_reg(dev, 0x34, width >> 4); |
| 298 | em28xx_write_reg(dev, 0x35, height >> 4); |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) |
| 303 | { |
| 304 | u8 mode = 0x00; |
| 305 | /* the em2800 scaler only supports scaling down to 50% */ |
| 306 | |
| 307 | if (dev->board.is_em2800) { |
| 308 | mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00); |
| 309 | } else { |
| 310 | u8 buf[2]; |
| 311 | |
| 312 | buf[0] = h; |
| 313 | buf[1] = h >> 8; |
| 314 | em28xx_write_regs(dev, EM28XX_R30_HSCALELOW, (char *)buf, 2); |
| 315 | |
| 316 | buf[0] = v; |
| 317 | buf[1] = v >> 8; |
| 318 | em28xx_write_regs(dev, EM28XX_R32_VSCALELOW, (char *)buf, 2); |
| 319 | /* it seems that both H and V scalers must be active |
| 320 | to work correctly */ |
| 321 | mode = (h || v) ? 0x30 : 0x00; |
| 322 | } |
| 323 | return em28xx_write_reg(dev, EM28XX_R26_COMPR, mode); |
| 324 | } |
| 325 | |
| 326 | /* FIXME: this only function read values from dev */ |
| 327 | static int em28xx_resolution_set(struct em28xx *dev) |
| 328 | { |
| 329 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 330 | int width = norm_maxw(dev); |
| 331 | int height = norm_maxh(dev); |
| 332 | |
| 333 | /* Properly setup VBI */ |
| 334 | v4l2->vbi_width = 720; |
| 335 | if (v4l2->norm & V4L2_STD_525_60) |
| 336 | v4l2->vbi_height = 12; |
| 337 | else |
| 338 | v4l2->vbi_height = 18; |
| 339 | |
| 340 | em28xx_set_outfmt(dev); |
| 341 | |
| 342 | em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2); |
| 343 | |
| 344 | /* If we don't set the start position to 2 in VBI mode, we end up |
| 345 | with line 20/21 being YUYV encoded instead of being in 8-bit |
| 346 | greyscale. The core of the issue is that line 21 (and line 23 for |
| 347 | PAL WSS) are inside of active video region, and as a result they |
| 348 | get the pixelformatting associated with that area. So by cropping |
| 349 | it out, we end up with the same format as the rest of the VBI |
| 350 | region */ |
| 351 | if (em28xx_vbi_supported(dev) == 1) |
| 352 | em28xx_capture_area_set(dev, 0, 2, width, height); |
| 353 | else |
| 354 | em28xx_capture_area_set(dev, 0, 0, width, height); |
| 355 | |
| 356 | return em28xx_scaler_set(dev, v4l2->hscale, v4l2->vscale); |
| 357 | } |
| 358 | |
| 359 | /* Set USB alternate setting for analog video */ |
| 360 | static int em28xx_set_alternate(struct em28xx *dev) |
| 361 | { |
| 362 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 363 | int errCode; |
| 364 | int i; |
| 365 | unsigned int min_pkt_size = v4l2->width * 2 + 4; |
| 366 | |
| 367 | /* NOTE: for isoc transfers, only alt settings > 0 are allowed |
| 368 | bulk transfers seem to work only with alt=0 ! */ |
| 369 | dev->alt = 0; |
| 370 | if ((alt > 0) && (alt < dev->num_alt)) { |
| 371 | em28xx_videodbg("alternate forced to %d\n", dev->alt); |
| 372 | dev->alt = alt; |
| 373 | goto set_alt; |
| 374 | } |
| 375 | if (dev->analog_xfer_bulk) |
| 376 | goto set_alt; |
| 377 | |
| 378 | /* When image size is bigger than a certain value, |
| 379 | the frame size should be increased, otherwise, only |
| 380 | green screen will be received. |
| 381 | */ |
| 382 | if (v4l2->width * 2 * v4l2->height > 720 * 240 * 2) |
| 383 | min_pkt_size *= 2; |
| 384 | |
| 385 | for (i = 0; i < dev->num_alt; i++) { |
| 386 | /* stop when the selected alt setting offers enough bandwidth */ |
| 387 | if (dev->alt_max_pkt_size_isoc[i] >= min_pkt_size) { |
| 388 | dev->alt = i; |
| 389 | break; |
| 390 | /* otherwise make sure that we end up with the maximum bandwidth |
| 391 | because the min_pkt_size equation might be wrong... |
| 392 | */ |
| 393 | } else if (dev->alt_max_pkt_size_isoc[i] > |
| 394 | dev->alt_max_pkt_size_isoc[dev->alt]) |
| 395 | dev->alt = i; |
| 396 | } |
| 397 | |
| 398 | set_alt: |
| 399 | /* NOTE: for bulk transfers, we need to call usb_set_interface() |
| 400 | * even if the previous settings were the same. Otherwise streaming |
| 401 | * fails with all urbs having status = -EOVERFLOW ! */ |
| 402 | if (dev->analog_xfer_bulk) { |
| 403 | dev->max_pkt_size = 512; /* USB 2.0 spec */ |
| 404 | dev->packet_multiplier = EM28XX_BULK_PACKET_MULTIPLIER; |
| 405 | } else { /* isoc */ |
| 406 | em28xx_videodbg("minimum isoc packet size: %u (alt=%d)\n", |
| 407 | min_pkt_size, dev->alt); |
| 408 | dev->max_pkt_size = |
| 409 | dev->alt_max_pkt_size_isoc[dev->alt]; |
| 410 | dev->packet_multiplier = EM28XX_NUM_ISOC_PACKETS; |
| 411 | } |
| 412 | em28xx_videodbg("setting alternate %d with wMaxPacketSize=%u\n", |
| 413 | dev->alt, dev->max_pkt_size); |
| 414 | errCode = usb_set_interface(dev->udev, dev->ifnum, dev->alt); |
| 415 | if (errCode < 0) { |
| 416 | em28xx_errdev("cannot change alternate number to %d (error=%i)\n", |
| 417 | dev->alt, errCode); |
| 418 | return errCode; |
| 419 | } |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | /* ------------------------------------------------------------------ |
| 424 | DMA and thread functions |
| 425 | ------------------------------------------------------------------*/ |
| 426 | |
| 427 | /* |
| 428 | * Finish the current buffer |
| 429 | */ |
| 430 | static inline void finish_buffer(struct em28xx *dev, |
| 431 | struct em28xx_buffer *buf) |
| 432 | { |
| 433 | em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field); |
| 434 | |
| 435 | buf->vb.sequence = dev->v4l2->field_count++; |
| 436 | if (dev->v4l2->progressive) |
| 437 | buf->vb.field = V4L2_FIELD_NONE; |
| 438 | else |
| 439 | buf->vb.field = V4L2_FIELD_INTERLACED; |
| 440 | buf->vb.vb2_buf.timestamp = ktime_get_ns(); |
| 441 | |
| 442 | vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * Copy picture data from USB buffer to videobuf buffer |
| 447 | */ |
| 448 | static void em28xx_copy_video(struct em28xx *dev, |
| 449 | struct em28xx_buffer *buf, |
| 450 | unsigned char *usb_buf, |
| 451 | unsigned long len) |
| 452 | { |
| 453 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 454 | void *fieldstart, *startwrite, *startread; |
| 455 | int linesdone, currlinedone, offset, lencopy, remain; |
| 456 | int bytesperline = v4l2->width << 1; |
| 457 | |
| 458 | if (buf->pos + len > buf->length) |
| 459 | len = buf->length - buf->pos; |
| 460 | |
| 461 | startread = usb_buf; |
| 462 | remain = len; |
| 463 | |
| 464 | if (v4l2->progressive || buf->top_field) |
| 465 | fieldstart = buf->vb_buf; |
| 466 | else /* interlaced mode, even nr. of lines */ |
| 467 | fieldstart = buf->vb_buf + bytesperline; |
| 468 | |
| 469 | linesdone = buf->pos / bytesperline; |
| 470 | currlinedone = buf->pos % bytesperline; |
| 471 | |
| 472 | if (v4l2->progressive) |
| 473 | offset = linesdone * bytesperline + currlinedone; |
| 474 | else |
| 475 | offset = linesdone * bytesperline * 2 + currlinedone; |
| 476 | |
| 477 | startwrite = fieldstart + offset; |
| 478 | lencopy = bytesperline - currlinedone; |
| 479 | lencopy = lencopy > remain ? remain : lencopy; |
| 480 | |
| 481 | if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) { |
| 482 | em28xx_isocdbg("Overflow of %zu bytes past buffer end (1)\n", |
| 483 | ((char *)startwrite + lencopy) - |
| 484 | ((char *)buf->vb_buf + buf->length)); |
| 485 | remain = (char *)buf->vb_buf + buf->length - |
| 486 | (char *)startwrite; |
| 487 | lencopy = remain; |
| 488 | } |
| 489 | if (lencopy <= 0) |
| 490 | return; |
| 491 | memcpy(startwrite, startread, lencopy); |
| 492 | |
| 493 | remain -= lencopy; |
| 494 | |
| 495 | while (remain > 0) { |
| 496 | if (v4l2->progressive) |
| 497 | startwrite += lencopy; |
| 498 | else |
| 499 | startwrite += lencopy + bytesperline; |
| 500 | startread += lencopy; |
| 501 | if (bytesperline > remain) |
| 502 | lencopy = remain; |
| 503 | else |
| 504 | lencopy = bytesperline; |
| 505 | |
| 506 | if ((char *)startwrite + lencopy > (char *)buf->vb_buf + |
| 507 | buf->length) { |
| 508 | em28xx_isocdbg("Overflow of %zu bytes past buffer end" |
| 509 | "(2)\n", |
| 510 | ((char *)startwrite + lencopy) - |
| 511 | ((char *)buf->vb_buf + buf->length)); |
| 512 | lencopy = remain = (char *)buf->vb_buf + buf->length - |
| 513 | (char *)startwrite; |
| 514 | } |
| 515 | if (lencopy <= 0) |
| 516 | break; |
| 517 | |
| 518 | memcpy(startwrite, startread, lencopy); |
| 519 | |
| 520 | remain -= lencopy; |
| 521 | } |
| 522 | |
| 523 | buf->pos += len; |
| 524 | } |
| 525 | |
| 526 | /* |
| 527 | * Copy VBI data from USB buffer to videobuf buffer |
| 528 | */ |
| 529 | static void em28xx_copy_vbi(struct em28xx *dev, |
| 530 | struct em28xx_buffer *buf, |
| 531 | unsigned char *usb_buf, |
| 532 | unsigned long len) |
| 533 | { |
| 534 | unsigned int offset; |
| 535 | |
| 536 | if (buf->pos + len > buf->length) |
| 537 | len = buf->length - buf->pos; |
| 538 | |
| 539 | offset = buf->pos; |
| 540 | /* Make sure the bottom field populates the second half of the frame */ |
| 541 | if (buf->top_field == 0) |
| 542 | offset += dev->v4l2->vbi_width * dev->v4l2->vbi_height; |
| 543 | |
| 544 | memcpy(buf->vb_buf + offset, usb_buf, len); |
| 545 | buf->pos += len; |
| 546 | } |
| 547 | |
| 548 | static inline void print_err_status(struct em28xx *dev, |
| 549 | int packet, int status) |
| 550 | { |
| 551 | char *errmsg = "Unknown"; |
| 552 | |
| 553 | switch (status) { |
| 554 | case -ENOENT: |
| 555 | errmsg = "unlinked synchronuously"; |
| 556 | break; |
| 557 | case -ECONNRESET: |
| 558 | errmsg = "unlinked asynchronuously"; |
| 559 | break; |
| 560 | case -ENOSR: |
| 561 | errmsg = "Buffer error (overrun)"; |
| 562 | break; |
| 563 | case -EPIPE: |
| 564 | errmsg = "Stalled (device not responding)"; |
| 565 | break; |
| 566 | case -EOVERFLOW: |
| 567 | errmsg = "Babble (bad cable?)"; |
| 568 | break; |
| 569 | case -EPROTO: |
| 570 | errmsg = "Bit-stuff error (bad cable?)"; |
| 571 | break; |
| 572 | case -EILSEQ: |
| 573 | errmsg = "CRC/Timeout (could be anything)"; |
| 574 | break; |
| 575 | case -ETIME: |
| 576 | errmsg = "Device does not respond"; |
| 577 | break; |
| 578 | } |
| 579 | if (packet < 0) { |
| 580 | em28xx_isocdbg("URB status %d [%s].\n", status, errmsg); |
| 581 | } else { |
| 582 | em28xx_isocdbg("URB packet %d, status %d [%s].\n", |
| 583 | packet, status, errmsg); |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | /* |
| 588 | * get the next available buffer from dma queue |
| 589 | */ |
| 590 | static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev, |
| 591 | struct em28xx_dmaqueue *dma_q) |
| 592 | { |
| 593 | struct em28xx_buffer *buf; |
| 594 | |
| 595 | if (list_empty(&dma_q->active)) { |
| 596 | em28xx_isocdbg("No active queue to serve\n"); |
| 597 | return NULL; |
| 598 | } |
| 599 | |
| 600 | /* Get the next buffer */ |
| 601 | buf = list_entry(dma_q->active.next, struct em28xx_buffer, list); |
| 602 | /* Cleans up buffer - Useful for testing for frame/URB loss */ |
| 603 | list_del(&buf->list); |
| 604 | buf->pos = 0; |
| 605 | buf->vb_buf = buf->mem; |
| 606 | |
| 607 | return buf; |
| 608 | } |
| 609 | |
| 610 | /* |
| 611 | * Finish the current buffer if completed and prepare for the next field |
| 612 | */ |
| 613 | static struct em28xx_buffer * |
| 614 | finish_field_prepare_next(struct em28xx *dev, |
| 615 | struct em28xx_buffer *buf, |
| 616 | struct em28xx_dmaqueue *dma_q) |
| 617 | { |
| 618 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 619 | |
| 620 | if (v4l2->progressive || v4l2->top_field) { /* Brand new frame */ |
| 621 | if (buf != NULL) |
| 622 | finish_buffer(dev, buf); |
| 623 | buf = get_next_buf(dev, dma_q); |
| 624 | } |
| 625 | if (buf != NULL) { |
| 626 | buf->top_field = v4l2->top_field; |
| 627 | buf->pos = 0; |
| 628 | } |
| 629 | |
| 630 | return buf; |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * Process data packet according to the em2710/em2750/em28xx frame data format |
| 635 | */ |
| 636 | static inline void process_frame_data_em28xx(struct em28xx *dev, |
| 637 | unsigned char *data_pkt, |
| 638 | unsigned int data_len) |
| 639 | { |
| 640 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 641 | struct em28xx_buffer *buf = dev->usb_ctl.vid_buf; |
| 642 | struct em28xx_buffer *vbi_buf = dev->usb_ctl.vbi_buf; |
| 643 | struct em28xx_dmaqueue *dma_q = &dev->vidq; |
| 644 | struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq; |
| 645 | |
| 646 | /* capture type 0 = vbi start |
| 647 | capture type 1 = vbi in progress |
| 648 | capture type 2 = video start |
| 649 | capture type 3 = video in progress */ |
| 650 | if (data_len >= 4) { |
| 651 | /* NOTE: Headers are always 4 bytes and |
| 652 | * never split across packets */ |
| 653 | if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 && |
| 654 | data_pkt[2] == 0x88 && data_pkt[3] == 0x88) { |
| 655 | /* Continuation */ |
| 656 | data_pkt += 4; |
| 657 | data_len -= 4; |
| 658 | } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) { |
| 659 | /* Field start (VBI mode) */ |
| 660 | v4l2->capture_type = 0; |
| 661 | v4l2->vbi_read = 0; |
| 662 | em28xx_isocdbg("VBI START HEADER !!!\n"); |
| 663 | v4l2->top_field = !(data_pkt[2] & 1); |
| 664 | data_pkt += 4; |
| 665 | data_len -= 4; |
| 666 | } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) { |
| 667 | /* Field start (VBI disabled) */ |
| 668 | v4l2->capture_type = 2; |
| 669 | em28xx_isocdbg("VIDEO START HEADER !!!\n"); |
| 670 | v4l2->top_field = !(data_pkt[2] & 1); |
| 671 | data_pkt += 4; |
| 672 | data_len -= 4; |
| 673 | } |
| 674 | } |
| 675 | /* NOTE: With bulk transfers, intermediate data packets |
| 676 | * have no continuation header */ |
| 677 | |
| 678 | if (v4l2->capture_type == 0) { |
| 679 | vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q); |
| 680 | dev->usb_ctl.vbi_buf = vbi_buf; |
| 681 | v4l2->capture_type = 1; |
| 682 | } |
| 683 | |
| 684 | if (v4l2->capture_type == 1) { |
| 685 | int vbi_size = v4l2->vbi_width * v4l2->vbi_height; |
| 686 | int vbi_data_len = ((v4l2->vbi_read + data_len) > vbi_size) ? |
| 687 | (vbi_size - v4l2->vbi_read) : data_len; |
| 688 | |
| 689 | /* Copy VBI data */ |
| 690 | if (vbi_buf != NULL) |
| 691 | em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len); |
| 692 | v4l2->vbi_read += vbi_data_len; |
| 693 | |
| 694 | if (vbi_data_len < data_len) { |
| 695 | /* Continue with copying video data */ |
| 696 | v4l2->capture_type = 2; |
| 697 | data_pkt += vbi_data_len; |
| 698 | data_len -= vbi_data_len; |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | if (v4l2->capture_type == 2) { |
| 703 | buf = finish_field_prepare_next(dev, buf, dma_q); |
| 704 | dev->usb_ctl.vid_buf = buf; |
| 705 | v4l2->capture_type = 3; |
| 706 | } |
| 707 | |
| 708 | if (v4l2->capture_type == 3 && buf != NULL && data_len > 0) |
| 709 | em28xx_copy_video(dev, buf, data_pkt, data_len); |
| 710 | } |
| 711 | |
| 712 | /* |
| 713 | * Process data packet according to the em25xx/em276x/7x/8x frame data format |
| 714 | */ |
| 715 | static inline void process_frame_data_em25xx(struct em28xx *dev, |
| 716 | unsigned char *data_pkt, |
| 717 | unsigned int data_len) |
| 718 | { |
| 719 | struct em28xx_buffer *buf = dev->usb_ctl.vid_buf; |
| 720 | struct em28xx_dmaqueue *dmaq = &dev->vidq; |
| 721 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 722 | bool frame_end = false; |
| 723 | |
| 724 | /* Check for header */ |
| 725 | /* NOTE: at least with bulk transfers, only the first packet |
| 726 | * has a header and has always set the FRAME_END bit */ |
| 727 | if (data_len >= 2) { /* em25xx header is only 2 bytes long */ |
| 728 | if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) && |
| 729 | ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) { |
| 730 | v4l2->top_field = !(data_pkt[1] & |
| 731 | EM25XX_FRMDATAHDR_BYTE2_FRAME_ID); |
| 732 | frame_end = data_pkt[1] & |
| 733 | EM25XX_FRMDATAHDR_BYTE2_FRAME_END; |
| 734 | data_pkt += 2; |
| 735 | data_len -= 2; |
| 736 | } |
| 737 | |
| 738 | /* Finish field and prepare next (BULK only) */ |
| 739 | if (dev->analog_xfer_bulk && frame_end) { |
| 740 | buf = finish_field_prepare_next(dev, buf, dmaq); |
| 741 | dev->usb_ctl.vid_buf = buf; |
| 742 | } |
| 743 | /* NOTE: in ISOC mode when a new frame starts and buf==NULL, |
| 744 | * we COULD already prepare a buffer here to avoid skipping the |
| 745 | * first frame. |
| 746 | */ |
| 747 | } |
| 748 | |
| 749 | /* Copy data */ |
| 750 | if (buf != NULL && data_len > 0) |
| 751 | em28xx_copy_video(dev, buf, data_pkt, data_len); |
| 752 | |
| 753 | /* Finish frame (ISOC only) => avoids lag of 1 frame */ |
| 754 | if (!dev->analog_xfer_bulk && frame_end) { |
| 755 | buf = finish_field_prepare_next(dev, buf, dmaq); |
| 756 | dev->usb_ctl.vid_buf = buf; |
| 757 | } |
| 758 | |
| 759 | /* NOTE: Tested with USB bulk transfers only ! |
| 760 | * The wording in the datasheet suggests that isoc might work different. |
| 761 | * The current code assumes that with isoc transfers each packet has a |
| 762 | * header like with the other em28xx devices. |
| 763 | */ |
| 764 | /* NOTE: Support for interlaced mode is pure theory. It has not been |
| 765 | * tested and it is unknown if these devices actually support it. */ |
| 766 | /* NOTE: No VBI support yet (these chips likely do not support VBI). */ |
| 767 | } |
| 768 | |
| 769 | /* Processes and copies the URB data content (video and VBI data) */ |
| 770 | static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb) |
| 771 | { |
| 772 | int xfer_bulk, num_packets, i; |
| 773 | unsigned char *usb_data_pkt; |
| 774 | unsigned int usb_data_len; |
| 775 | |
| 776 | if (!dev) |
| 777 | return 0; |
| 778 | |
| 779 | if (dev->disconnected) |
| 780 | return 0; |
| 781 | |
| 782 | if (urb->status < 0) |
| 783 | print_err_status(dev, -1, urb->status); |
| 784 | |
| 785 | xfer_bulk = usb_pipebulk(urb->pipe); |
| 786 | |
| 787 | if (xfer_bulk) /* bulk */ |
| 788 | num_packets = 1; |
| 789 | else /* isoc */ |
| 790 | num_packets = urb->number_of_packets; |
| 791 | |
| 792 | for (i = 0; i < num_packets; i++) { |
| 793 | if (xfer_bulk) { /* bulk */ |
| 794 | usb_data_len = urb->actual_length; |
| 795 | |
| 796 | usb_data_pkt = urb->transfer_buffer; |
| 797 | } else { /* isoc */ |
| 798 | if (urb->iso_frame_desc[i].status < 0) { |
| 799 | print_err_status(dev, i, |
| 800 | urb->iso_frame_desc[i].status); |
| 801 | if (urb->iso_frame_desc[i].status != -EPROTO) |
| 802 | continue; |
| 803 | } |
| 804 | |
| 805 | usb_data_len = urb->iso_frame_desc[i].actual_length; |
| 806 | if (usb_data_len > dev->max_pkt_size) { |
| 807 | em28xx_isocdbg("packet bigger than packet size"); |
| 808 | continue; |
| 809 | } |
| 810 | |
| 811 | usb_data_pkt = urb->transfer_buffer + |
| 812 | urb->iso_frame_desc[i].offset; |
| 813 | } |
| 814 | |
| 815 | if (usb_data_len == 0) { |
| 816 | /* NOTE: happens very often with isoc transfers */ |
| 817 | /* em28xx_usbdbg("packet %d is empty",i); - spammy */ |
| 818 | continue; |
| 819 | } |
| 820 | |
| 821 | if (dev->is_em25xx) |
| 822 | process_frame_data_em25xx(dev, |
| 823 | usb_data_pkt, usb_data_len); |
| 824 | else |
| 825 | process_frame_data_em28xx(dev, |
| 826 | usb_data_pkt, usb_data_len); |
| 827 | |
| 828 | } |
| 829 | return 1; |
| 830 | } |
| 831 | |
| 832 | static int get_ressource(enum v4l2_buf_type f_type) |
| 833 | { |
| 834 | switch (f_type) { |
| 835 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 836 | return EM28XX_RESOURCE_VIDEO; |
| 837 | case V4L2_BUF_TYPE_VBI_CAPTURE: |
| 838 | return EM28XX_RESOURCE_VBI; |
| 839 | default: |
| 840 | BUG(); |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | /* Usage lock check functions */ |
| 845 | static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type) |
| 846 | { |
| 847 | int res_type = get_ressource(f_type); |
| 848 | |
| 849 | /* is it free? */ |
| 850 | if (dev->resources & res_type) { |
| 851 | /* no, someone else uses it */ |
| 852 | return -EBUSY; |
| 853 | } |
| 854 | |
| 855 | /* it's free, grab it */ |
| 856 | dev->resources |= res_type; |
| 857 | em28xx_videodbg("res: get %d\n", res_type); |
| 858 | return 0; |
| 859 | } |
| 860 | |
| 861 | static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type) |
| 862 | { |
| 863 | int res_type = get_ressource(f_type); |
| 864 | |
| 865 | dev->resources &= ~res_type; |
| 866 | em28xx_videodbg("res: put %d\n", res_type); |
| 867 | } |
| 868 | |
| 869 | static void em28xx_v4l2_media_release(struct em28xx *dev) |
| 870 | { |
| 871 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 872 | int i; |
| 873 | |
| 874 | for (i = 0; i < MAX_EM28XX_INPUT; i++) { |
| 875 | if (!INPUT(i)->type) |
| 876 | return; |
| 877 | media_device_unregister_entity(&dev->input_ent[i]); |
| 878 | } |
| 879 | #endif |
| 880 | } |
| 881 | |
| 882 | /* |
| 883 | * Media Controller helper functions |
| 884 | */ |
| 885 | |
| 886 | static int em28xx_enable_analog_tuner(struct em28xx *dev) |
| 887 | { |
| 888 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 889 | struct media_device *mdev = dev->media_dev; |
| 890 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 891 | struct media_entity *source; |
| 892 | struct media_link *link, *found_link = NULL; |
| 893 | int ret, active_links = 0; |
| 894 | |
| 895 | if (!mdev || !v4l2->decoder) |
| 896 | return 0; |
| 897 | |
| 898 | /* |
| 899 | * This will find the tuner that is connected into the decoder. |
| 900 | * Technically, this is not 100% correct, as the device may be |
| 901 | * using an analog input instead of the tuner. However, as we can't |
| 902 | * do DVB streaming while the DMA engine is being used for V4L2, |
| 903 | * this should be enough for the actual needs. |
| 904 | */ |
| 905 | list_for_each_entry(link, &v4l2->decoder->links, list) { |
| 906 | if (link->sink->entity == v4l2->decoder) { |
| 907 | found_link = link; |
| 908 | if (link->flags & MEDIA_LNK_FL_ENABLED) |
| 909 | active_links++; |
| 910 | break; |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | if (active_links == 1 || !found_link) |
| 915 | return 0; |
| 916 | |
| 917 | source = found_link->source->entity; |
| 918 | list_for_each_entry(link, &source->links, list) { |
| 919 | struct media_entity *sink; |
| 920 | int flags = 0; |
| 921 | |
| 922 | sink = link->sink->entity; |
| 923 | |
| 924 | if (sink == v4l2->decoder) |
| 925 | flags = MEDIA_LNK_FL_ENABLED; |
| 926 | |
| 927 | ret = media_entity_setup_link(link, flags); |
| 928 | if (ret) { |
| 929 | pr_err("Couldn't change link %s->%s to %s. Error %d\n", |
| 930 | source->name, sink->name, |
| 931 | flags ? "enabled" : "disabled", |
| 932 | ret); |
| 933 | return ret; |
| 934 | } else |
| 935 | em28xx_videodbg("link %s->%s was %s\n", |
| 936 | source->name, sink->name, |
| 937 | flags ? "ENABLED" : "disabled"); |
| 938 | } |
| 939 | #endif |
| 940 | return 0; |
| 941 | } |
| 942 | |
| 943 | static const char * const iname[] = { |
| 944 | [EM28XX_VMUX_COMPOSITE] = "Composite", |
| 945 | [EM28XX_VMUX_SVIDEO] = "S-Video", |
| 946 | [EM28XX_VMUX_TELEVISION] = "Television", |
| 947 | [EM28XX_RADIO] = "Radio", |
| 948 | }; |
| 949 | |
| 950 | static void em28xx_v4l2_create_entities(struct em28xx *dev) |
| 951 | { |
| 952 | #if defined(CONFIG_MEDIA_CONTROLLER) |
| 953 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 954 | int ret, i; |
| 955 | |
| 956 | /* Initialize Video, VBI and Radio pads */ |
| 957 | v4l2->video_pad.flags = MEDIA_PAD_FL_SINK; |
| 958 | ret = media_entity_pads_init(&v4l2->vdev.entity, 1, &v4l2->video_pad); |
| 959 | if (ret < 0) |
| 960 | pr_err("failed to initialize video media entity!\n"); |
| 961 | |
| 962 | if (em28xx_vbi_supported(dev)) { |
| 963 | v4l2->vbi_pad.flags = MEDIA_PAD_FL_SINK; |
| 964 | ret = media_entity_pads_init(&v4l2->vbi_dev.entity, 1, |
| 965 | &v4l2->vbi_pad); |
| 966 | if (ret < 0) |
| 967 | pr_err("failed to initialize vbi media entity!\n"); |
| 968 | } |
| 969 | |
| 970 | /* Webcams don't have input connectors */ |
| 971 | if (dev->board.is_webcam) |
| 972 | return; |
| 973 | |
| 974 | /* Create entities for each input connector */ |
| 975 | for (i = 0; i < MAX_EM28XX_INPUT; i++) { |
| 976 | struct media_entity *ent = &dev->input_ent[i]; |
| 977 | |
| 978 | if (!INPUT(i)->type) |
| 979 | break; |
| 980 | |
| 981 | ent->name = iname[INPUT(i)->type]; |
| 982 | ent->flags = MEDIA_ENT_FL_CONNECTOR; |
| 983 | dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE; |
| 984 | |
| 985 | switch (INPUT(i)->type) { |
| 986 | case EM28XX_VMUX_COMPOSITE: |
| 987 | ent->function = MEDIA_ENT_F_CONN_COMPOSITE; |
| 988 | break; |
| 989 | case EM28XX_VMUX_SVIDEO: |
| 990 | ent->function = MEDIA_ENT_F_CONN_SVIDEO; |
| 991 | break; |
| 992 | default: /* EM28XX_VMUX_TELEVISION or EM28XX_RADIO */ |
| 993 | if (dev->tuner_type != TUNER_ABSENT) |
| 994 | ent->function = MEDIA_ENT_F_CONN_RF; |
| 995 | break; |
| 996 | } |
| 997 | |
| 998 | ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]); |
| 999 | if (ret < 0) |
| 1000 | pr_err("failed to initialize input pad[%d]!\n", i); |
| 1001 | |
| 1002 | ret = media_device_register_entity(dev->media_dev, ent); |
| 1003 | if (ret < 0) |
| 1004 | pr_err("failed to register input entity %d!\n", i); |
| 1005 | } |
| 1006 | #endif |
| 1007 | } |
| 1008 | |
| 1009 | |
| 1010 | /* ------------------------------------------------------------------ |
| 1011 | Videobuf2 operations |
| 1012 | ------------------------------------------------------------------*/ |
| 1013 | |
| 1014 | static int queue_setup(struct vb2_queue *vq, |
| 1015 | unsigned int *nbuffers, unsigned int *nplanes, |
| 1016 | unsigned int sizes[], void *alloc_ctxs[]) |
| 1017 | { |
| 1018 | struct em28xx *dev = vb2_get_drv_priv(vq); |
| 1019 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1020 | unsigned long size = |
| 1021 | (v4l2->width * v4l2->height * v4l2->format->depth + 7) >> 3; |
| 1022 | |
| 1023 | if (*nplanes) |
| 1024 | return sizes[0] < size ? -EINVAL : 0; |
| 1025 | *nplanes = 1; |
| 1026 | sizes[0] = size; |
| 1027 | |
| 1028 | em28xx_enable_analog_tuner(dev); |
| 1029 | |
| 1030 | return 0; |
| 1031 | } |
| 1032 | |
| 1033 | static int |
| 1034 | buffer_prepare(struct vb2_buffer *vb) |
| 1035 | { |
| 1036 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
| 1037 | struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue); |
| 1038 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1039 | unsigned long size; |
| 1040 | |
| 1041 | em28xx_videodbg("%s, field=%d\n", __func__, vbuf->field); |
| 1042 | |
| 1043 | size = (v4l2->width * v4l2->height * v4l2->format->depth + 7) >> 3; |
| 1044 | |
| 1045 | if (vb2_plane_size(vb, 0) < size) { |
| 1046 | em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n", |
| 1047 | __func__, vb2_plane_size(vb, 0), size); |
| 1048 | return -EINVAL; |
| 1049 | } |
| 1050 | vb2_set_plane_payload(vb, 0, size); |
| 1051 | |
| 1052 | return 0; |
| 1053 | } |
| 1054 | |
| 1055 | int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count) |
| 1056 | { |
| 1057 | struct em28xx *dev = vb2_get_drv_priv(vq); |
| 1058 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1059 | struct v4l2_frequency f; |
| 1060 | struct v4l2_fh *owner; |
| 1061 | int rc = 0; |
| 1062 | |
| 1063 | em28xx_videodbg("%s\n", __func__); |
| 1064 | |
| 1065 | /* Make sure streaming is not already in progress for this type |
| 1066 | of filehandle (e.g. video, vbi) */ |
| 1067 | rc = res_get(dev, vq->type); |
| 1068 | if (rc) |
| 1069 | return rc; |
| 1070 | |
| 1071 | if (v4l2->streaming_users == 0) { |
| 1072 | /* First active streaming user, so allocate all the URBs */ |
| 1073 | |
| 1074 | /* Allocate the USB bandwidth */ |
| 1075 | em28xx_set_alternate(dev); |
| 1076 | |
| 1077 | /* Needed, since GPIO might have disabled power of |
| 1078 | some i2c device |
| 1079 | */ |
| 1080 | em28xx_wake_i2c(dev); |
| 1081 | |
| 1082 | v4l2->capture_type = -1; |
| 1083 | rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE, |
| 1084 | dev->analog_xfer_bulk, |
| 1085 | EM28XX_NUM_BUFS, |
| 1086 | dev->max_pkt_size, |
| 1087 | dev->packet_multiplier, |
| 1088 | em28xx_urb_data_copy); |
| 1089 | if (rc < 0) |
| 1090 | return rc; |
| 1091 | |
| 1092 | /* |
| 1093 | * djh: it's not clear whether this code is still needed. I'm |
| 1094 | * leaving it in here for now entirely out of concern for |
| 1095 | * backward compatibility (the old code did it) |
| 1096 | */ |
| 1097 | |
| 1098 | /* Ask tuner to go to analog or radio mode */ |
| 1099 | memset(&f, 0, sizeof(f)); |
| 1100 | f.frequency = v4l2->frequency; |
| 1101 | owner = (struct v4l2_fh *)vq->owner; |
| 1102 | if (owner && owner->vdev->vfl_type == VFL_TYPE_RADIO) |
| 1103 | f.type = V4L2_TUNER_RADIO; |
| 1104 | else |
| 1105 | f.type = V4L2_TUNER_ANALOG_TV; |
| 1106 | v4l2_device_call_all(&v4l2->v4l2_dev, |
| 1107 | 0, tuner, s_frequency, &f); |
| 1108 | |
| 1109 | /* Enable video stream at TV decoder */ |
| 1110 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 1); |
| 1111 | } |
| 1112 | |
| 1113 | v4l2->streaming_users++; |
| 1114 | |
| 1115 | return rc; |
| 1116 | } |
| 1117 | |
| 1118 | static void em28xx_stop_streaming(struct vb2_queue *vq) |
| 1119 | { |
| 1120 | struct em28xx *dev = vb2_get_drv_priv(vq); |
| 1121 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1122 | struct em28xx_dmaqueue *vidq = &dev->vidq; |
| 1123 | unsigned long flags = 0; |
| 1124 | |
| 1125 | em28xx_videodbg("%s\n", __func__); |
| 1126 | |
| 1127 | res_free(dev, vq->type); |
| 1128 | |
| 1129 | if (v4l2->streaming_users-- == 1) { |
| 1130 | /* Disable video stream at TV decoder */ |
| 1131 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 0); |
| 1132 | |
| 1133 | /* Last active user, so shutdown all the URBS */ |
| 1134 | em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); |
| 1135 | } |
| 1136 | |
| 1137 | spin_lock_irqsave(&dev->slock, flags); |
| 1138 | if (dev->usb_ctl.vid_buf != NULL) { |
| 1139 | vb2_buffer_done(&dev->usb_ctl.vid_buf->vb.vb2_buf, |
| 1140 | VB2_BUF_STATE_ERROR); |
| 1141 | dev->usb_ctl.vid_buf = NULL; |
| 1142 | } |
| 1143 | while (!list_empty(&vidq->active)) { |
| 1144 | struct em28xx_buffer *buf; |
| 1145 | |
| 1146 | buf = list_entry(vidq->active.next, struct em28xx_buffer, list); |
| 1147 | list_del(&buf->list); |
| 1148 | vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
| 1149 | } |
| 1150 | spin_unlock_irqrestore(&dev->slock, flags); |
| 1151 | } |
| 1152 | |
| 1153 | void em28xx_stop_vbi_streaming(struct vb2_queue *vq) |
| 1154 | { |
| 1155 | struct em28xx *dev = vb2_get_drv_priv(vq); |
| 1156 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1157 | struct em28xx_dmaqueue *vbiq = &dev->vbiq; |
| 1158 | unsigned long flags = 0; |
| 1159 | |
| 1160 | em28xx_videodbg("%s\n", __func__); |
| 1161 | |
| 1162 | res_free(dev, vq->type); |
| 1163 | |
| 1164 | if (v4l2->streaming_users-- == 1) { |
| 1165 | /* Disable video stream at TV decoder */ |
| 1166 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 0); |
| 1167 | |
| 1168 | /* Last active user, so shutdown all the URBS */ |
| 1169 | em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); |
| 1170 | } |
| 1171 | |
| 1172 | spin_lock_irqsave(&dev->slock, flags); |
| 1173 | if (dev->usb_ctl.vbi_buf != NULL) { |
| 1174 | vb2_buffer_done(&dev->usb_ctl.vbi_buf->vb.vb2_buf, |
| 1175 | VB2_BUF_STATE_ERROR); |
| 1176 | dev->usb_ctl.vbi_buf = NULL; |
| 1177 | } |
| 1178 | while (!list_empty(&vbiq->active)) { |
| 1179 | struct em28xx_buffer *buf; |
| 1180 | |
| 1181 | buf = list_entry(vbiq->active.next, struct em28xx_buffer, list); |
| 1182 | list_del(&buf->list); |
| 1183 | vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
| 1184 | } |
| 1185 | spin_unlock_irqrestore(&dev->slock, flags); |
| 1186 | } |
| 1187 | |
| 1188 | static void |
| 1189 | buffer_queue(struct vb2_buffer *vb) |
| 1190 | { |
| 1191 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
| 1192 | struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue); |
| 1193 | struct em28xx_buffer *buf = |
| 1194 | container_of(vbuf, struct em28xx_buffer, vb); |
| 1195 | struct em28xx_dmaqueue *vidq = &dev->vidq; |
| 1196 | unsigned long flags = 0; |
| 1197 | |
| 1198 | em28xx_videodbg("%s\n", __func__); |
| 1199 | buf->mem = vb2_plane_vaddr(vb, 0); |
| 1200 | buf->length = vb2_plane_size(vb, 0); |
| 1201 | |
| 1202 | spin_lock_irqsave(&dev->slock, flags); |
| 1203 | list_add_tail(&buf->list, &vidq->active); |
| 1204 | spin_unlock_irqrestore(&dev->slock, flags); |
| 1205 | } |
| 1206 | |
| 1207 | static struct vb2_ops em28xx_video_qops = { |
| 1208 | .queue_setup = queue_setup, |
| 1209 | .buf_prepare = buffer_prepare, |
| 1210 | .buf_queue = buffer_queue, |
| 1211 | .start_streaming = em28xx_start_analog_streaming, |
| 1212 | .stop_streaming = em28xx_stop_streaming, |
| 1213 | .wait_prepare = vb2_ops_wait_prepare, |
| 1214 | .wait_finish = vb2_ops_wait_finish, |
| 1215 | }; |
| 1216 | |
| 1217 | static int em28xx_vb2_setup(struct em28xx *dev) |
| 1218 | { |
| 1219 | int rc; |
| 1220 | struct vb2_queue *q; |
| 1221 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1222 | |
| 1223 | /* Setup Videobuf2 for Video capture */ |
| 1224 | q = &v4l2->vb_vidq; |
| 1225 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1226 | q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
| 1227 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| 1228 | q->drv_priv = dev; |
| 1229 | q->buf_struct_size = sizeof(struct em28xx_buffer); |
| 1230 | q->ops = &em28xx_video_qops; |
| 1231 | q->mem_ops = &vb2_vmalloc_memops; |
| 1232 | |
| 1233 | rc = vb2_queue_init(q); |
| 1234 | if (rc < 0) |
| 1235 | return rc; |
| 1236 | |
| 1237 | /* Setup Videobuf2 for VBI capture */ |
| 1238 | q = &v4l2->vb_vbiq; |
| 1239 | q->type = V4L2_BUF_TYPE_VBI_CAPTURE; |
| 1240 | q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR; |
| 1241 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| 1242 | q->drv_priv = dev; |
| 1243 | q->buf_struct_size = sizeof(struct em28xx_buffer); |
| 1244 | q->ops = &em28xx_vbi_qops; |
| 1245 | q->mem_ops = &vb2_vmalloc_memops; |
| 1246 | |
| 1247 | rc = vb2_queue_init(q); |
| 1248 | if (rc < 0) |
| 1249 | return rc; |
| 1250 | |
| 1251 | return 0; |
| 1252 | } |
| 1253 | |
| 1254 | /********************* v4l2 interface **************************************/ |
| 1255 | |
| 1256 | static void video_mux(struct em28xx *dev, int index) |
| 1257 | { |
| 1258 | struct v4l2_device *v4l2_dev = &dev->v4l2->v4l2_dev; |
| 1259 | |
| 1260 | dev->ctl_input = index; |
| 1261 | dev->ctl_ainput = INPUT(index)->amux; |
| 1262 | dev->ctl_aoutput = INPUT(index)->aout; |
| 1263 | |
| 1264 | if (!dev->ctl_aoutput) |
| 1265 | dev->ctl_aoutput = EM28XX_AOUT_MASTER; |
| 1266 | |
| 1267 | v4l2_device_call_all(v4l2_dev, 0, video, s_routing, |
| 1268 | INPUT(index)->vmux, 0, 0); |
| 1269 | |
| 1270 | if (dev->board.has_msp34xx) { |
| 1271 | if (dev->i2s_speed) { |
| 1272 | v4l2_device_call_all(v4l2_dev, 0, audio, |
| 1273 | s_i2s_clock_freq, dev->i2s_speed); |
| 1274 | } |
| 1275 | /* Note: this is msp3400 specific */ |
| 1276 | v4l2_device_call_all(v4l2_dev, 0, audio, s_routing, |
| 1277 | dev->ctl_ainput, |
| 1278 | MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0); |
| 1279 | } |
| 1280 | |
| 1281 | if (dev->board.adecoder != EM28XX_NOADECODER) { |
| 1282 | v4l2_device_call_all(v4l2_dev, 0, audio, s_routing, |
| 1283 | dev->ctl_ainput, dev->ctl_aoutput, 0); |
| 1284 | } |
| 1285 | |
| 1286 | em28xx_audio_analog_set(dev); |
| 1287 | } |
| 1288 | |
| 1289 | static void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) |
| 1290 | { |
| 1291 | struct em28xx *dev = priv; |
| 1292 | |
| 1293 | /* |
| 1294 | * In the case of non-AC97 volume controls, we still need |
| 1295 | * to do some setups at em28xx, in order to mute/unmute |
| 1296 | * and to adjust audio volume. However, the value ranges |
| 1297 | * should be checked by the corresponding V4L subdriver. |
| 1298 | */ |
| 1299 | switch (ctrl->id) { |
| 1300 | case V4L2_CID_AUDIO_MUTE: |
| 1301 | dev->mute = ctrl->val; |
| 1302 | em28xx_audio_analog_set(dev); |
| 1303 | break; |
| 1304 | case V4L2_CID_AUDIO_VOLUME: |
| 1305 | dev->volume = ctrl->val; |
| 1306 | em28xx_audio_analog_set(dev); |
| 1307 | break; |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl) |
| 1312 | { |
| 1313 | struct em28xx_v4l2 *v4l2 = |
| 1314 | container_of(ctrl->handler, struct em28xx_v4l2, ctrl_handler); |
| 1315 | struct em28xx *dev = v4l2->dev; |
| 1316 | int ret = -EINVAL; |
| 1317 | |
| 1318 | switch (ctrl->id) { |
| 1319 | case V4L2_CID_AUDIO_MUTE: |
| 1320 | dev->mute = ctrl->val; |
| 1321 | ret = em28xx_audio_analog_set(dev); |
| 1322 | break; |
| 1323 | case V4L2_CID_AUDIO_VOLUME: |
| 1324 | dev->volume = ctrl->val; |
| 1325 | ret = em28xx_audio_analog_set(dev); |
| 1326 | break; |
| 1327 | case V4L2_CID_CONTRAST: |
| 1328 | ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val); |
| 1329 | break; |
| 1330 | case V4L2_CID_BRIGHTNESS: |
| 1331 | ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val); |
| 1332 | break; |
| 1333 | case V4L2_CID_SATURATION: |
| 1334 | ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val); |
| 1335 | break; |
| 1336 | case V4L2_CID_BLUE_BALANCE: |
| 1337 | ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val); |
| 1338 | break; |
| 1339 | case V4L2_CID_RED_BALANCE: |
| 1340 | ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val); |
| 1341 | break; |
| 1342 | case V4L2_CID_SHARPNESS: |
| 1343 | ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val); |
| 1344 | break; |
| 1345 | } |
| 1346 | |
| 1347 | return (ret < 0) ? ret : 0; |
| 1348 | } |
| 1349 | |
| 1350 | static const struct v4l2_ctrl_ops em28xx_ctrl_ops = { |
| 1351 | .s_ctrl = em28xx_s_ctrl, |
| 1352 | }; |
| 1353 | |
| 1354 | static void size_to_scale(struct em28xx *dev, |
| 1355 | unsigned int width, unsigned int height, |
| 1356 | unsigned int *hscale, unsigned int *vscale) |
| 1357 | { |
| 1358 | unsigned int maxw = norm_maxw(dev); |
| 1359 | unsigned int maxh = norm_maxh(dev); |
| 1360 | |
| 1361 | *hscale = (((unsigned long)maxw) << 12) / width - 4096L; |
| 1362 | if (*hscale > EM28XX_HVSCALE_MAX) |
| 1363 | *hscale = EM28XX_HVSCALE_MAX; |
| 1364 | |
| 1365 | *vscale = (((unsigned long)maxh) << 12) / height - 4096L; |
| 1366 | if (*vscale > EM28XX_HVSCALE_MAX) |
| 1367 | *vscale = EM28XX_HVSCALE_MAX; |
| 1368 | } |
| 1369 | |
| 1370 | static void scale_to_size(struct em28xx *dev, |
| 1371 | unsigned int hscale, unsigned int vscale, |
| 1372 | unsigned int *width, unsigned int *height) |
| 1373 | { |
| 1374 | unsigned int maxw = norm_maxw(dev); |
| 1375 | unsigned int maxh = norm_maxh(dev); |
| 1376 | |
| 1377 | *width = (((unsigned long)maxw) << 12) / (hscale + 4096L); |
| 1378 | *height = (((unsigned long)maxh) << 12) / (vscale + 4096L); |
| 1379 | |
| 1380 | /* Don't let width or height to be zero */ |
| 1381 | if (*width < 1) |
| 1382 | *width = 1; |
| 1383 | if (*height < 1) |
| 1384 | *height = 1; |
| 1385 | } |
| 1386 | |
| 1387 | /* ------------------------------------------------------------------ |
| 1388 | IOCTL vidioc handling |
| 1389 | ------------------------------------------------------------------*/ |
| 1390 | |
| 1391 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
| 1392 | struct v4l2_format *f) |
| 1393 | { |
| 1394 | struct em28xx *dev = video_drvdata(file); |
| 1395 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1396 | |
| 1397 | f->fmt.pix.width = v4l2->width; |
| 1398 | f->fmt.pix.height = v4l2->height; |
| 1399 | f->fmt.pix.pixelformat = v4l2->format->fourcc; |
| 1400 | f->fmt.pix.bytesperline = (v4l2->width * v4l2->format->depth + 7) >> 3; |
| 1401 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * v4l2->height; |
| 1402 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; |
| 1403 | |
| 1404 | /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ |
| 1405 | if (v4l2->progressive) |
| 1406 | f->fmt.pix.field = V4L2_FIELD_NONE; |
| 1407 | else |
| 1408 | f->fmt.pix.field = v4l2->interlaced_fieldmode ? |
| 1409 | V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; |
| 1410 | return 0; |
| 1411 | } |
| 1412 | |
| 1413 | static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc) |
| 1414 | { |
| 1415 | unsigned int i; |
| 1416 | |
| 1417 | for (i = 0; i < ARRAY_SIZE(format); i++) |
| 1418 | if (format[i].fourcc == fourcc) |
| 1419 | return &format[i]; |
| 1420 | |
| 1421 | return NULL; |
| 1422 | } |
| 1423 | |
| 1424 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
| 1425 | struct v4l2_format *f) |
| 1426 | { |
| 1427 | struct em28xx *dev = video_drvdata(file); |
| 1428 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1429 | unsigned int width = f->fmt.pix.width; |
| 1430 | unsigned int height = f->fmt.pix.height; |
| 1431 | unsigned int maxw = norm_maxw(dev); |
| 1432 | unsigned int maxh = norm_maxh(dev); |
| 1433 | unsigned int hscale, vscale; |
| 1434 | struct em28xx_fmt *fmt; |
| 1435 | |
| 1436 | fmt = format_by_fourcc(f->fmt.pix.pixelformat); |
| 1437 | if (!fmt) { |
| 1438 | em28xx_videodbg("Fourcc format (%08x) invalid.\n", |
| 1439 | f->fmt.pix.pixelformat); |
| 1440 | return -EINVAL; |
| 1441 | } |
| 1442 | |
| 1443 | if (dev->board.is_em2800) { |
| 1444 | /* the em2800 can only scale down to 50% */ |
| 1445 | height = height > (3 * maxh / 4) ? maxh : maxh / 2; |
| 1446 | width = width > (3 * maxw / 4) ? maxw : maxw / 2; |
| 1447 | /* |
| 1448 | * MaxPacketSize for em2800 is too small to capture at full |
| 1449 | * resolution use half of maxw as the scaler can only scale |
| 1450 | * to 50% |
| 1451 | */ |
| 1452 | if (width == maxw && height == maxh) |
| 1453 | width /= 2; |
| 1454 | } else { |
| 1455 | /* width must even because of the YUYV format |
| 1456 | height must be even because of interlacing */ |
| 1457 | v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, |
| 1458 | 1, 0); |
| 1459 | } |
| 1460 | /* Avoid division by zero at size_to_scale */ |
| 1461 | if (width < 1) |
| 1462 | width = 1; |
| 1463 | if (height < 1) |
| 1464 | height = 1; |
| 1465 | |
| 1466 | size_to_scale(dev, width, height, &hscale, &vscale); |
| 1467 | scale_to_size(dev, hscale, vscale, &width, &height); |
| 1468 | |
| 1469 | f->fmt.pix.width = width; |
| 1470 | f->fmt.pix.height = height; |
| 1471 | f->fmt.pix.pixelformat = fmt->fourcc; |
| 1472 | f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; |
| 1473 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; |
| 1474 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; |
| 1475 | if (v4l2->progressive) |
| 1476 | f->fmt.pix.field = V4L2_FIELD_NONE; |
| 1477 | else |
| 1478 | f->fmt.pix.field = v4l2->interlaced_fieldmode ? |
| 1479 | V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; |
| 1480 | f->fmt.pix.priv = 0; |
| 1481 | |
| 1482 | return 0; |
| 1483 | } |
| 1484 | |
| 1485 | static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc, |
| 1486 | unsigned width, unsigned height) |
| 1487 | { |
| 1488 | struct em28xx_fmt *fmt; |
| 1489 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1490 | |
| 1491 | fmt = format_by_fourcc(fourcc); |
| 1492 | if (!fmt) |
| 1493 | return -EINVAL; |
| 1494 | |
| 1495 | v4l2->format = fmt; |
| 1496 | v4l2->width = width; |
| 1497 | v4l2->height = height; |
| 1498 | |
| 1499 | /* set new image size */ |
| 1500 | size_to_scale(dev, v4l2->width, v4l2->height, |
| 1501 | &v4l2->hscale, &v4l2->vscale); |
| 1502 | |
| 1503 | em28xx_resolution_set(dev); |
| 1504 | |
| 1505 | return 0; |
| 1506 | } |
| 1507 | |
| 1508 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
| 1509 | struct v4l2_format *f) |
| 1510 | { |
| 1511 | struct em28xx *dev = video_drvdata(file); |
| 1512 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1513 | |
| 1514 | if (vb2_is_busy(&v4l2->vb_vidq)) |
| 1515 | return -EBUSY; |
| 1516 | |
| 1517 | vidioc_try_fmt_vid_cap(file, priv, f); |
| 1518 | |
| 1519 | return em28xx_set_video_format(dev, f->fmt.pix.pixelformat, |
| 1520 | f->fmt.pix.width, f->fmt.pix.height); |
| 1521 | } |
| 1522 | |
| 1523 | static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) |
| 1524 | { |
| 1525 | struct em28xx *dev = video_drvdata(file); |
| 1526 | |
| 1527 | *norm = dev->v4l2->norm; |
| 1528 | |
| 1529 | return 0; |
| 1530 | } |
| 1531 | |
| 1532 | static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm) |
| 1533 | { |
| 1534 | struct em28xx *dev = video_drvdata(file); |
| 1535 | |
| 1536 | v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, video, querystd, norm); |
| 1537 | |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
| 1541 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) |
| 1542 | { |
| 1543 | struct em28xx *dev = video_drvdata(file); |
| 1544 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1545 | struct v4l2_format f; |
| 1546 | |
| 1547 | if (norm == v4l2->norm) |
| 1548 | return 0; |
| 1549 | |
| 1550 | if (v4l2->streaming_users > 0) |
| 1551 | return -EBUSY; |
| 1552 | |
| 1553 | v4l2->norm = norm; |
| 1554 | |
| 1555 | /* Adjusts width/height, if needed */ |
| 1556 | f.fmt.pix.width = 720; |
| 1557 | f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576; |
| 1558 | vidioc_try_fmt_vid_cap(file, priv, &f); |
| 1559 | |
| 1560 | /* set new image size */ |
| 1561 | v4l2->width = f.fmt.pix.width; |
| 1562 | v4l2->height = f.fmt.pix.height; |
| 1563 | size_to_scale(dev, v4l2->width, v4l2->height, |
| 1564 | &v4l2->hscale, &v4l2->vscale); |
| 1565 | |
| 1566 | em28xx_resolution_set(dev); |
| 1567 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_std, v4l2->norm); |
| 1568 | |
| 1569 | return 0; |
| 1570 | } |
| 1571 | |
| 1572 | static int vidioc_g_parm(struct file *file, void *priv, |
| 1573 | struct v4l2_streamparm *p) |
| 1574 | { |
| 1575 | struct em28xx *dev = video_drvdata(file); |
| 1576 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1577 | int rc = 0; |
| 1578 | |
| 1579 | p->parm.capture.readbuffers = EM28XX_MIN_BUF; |
| 1580 | if (dev->board.is_webcam) |
| 1581 | rc = v4l2_device_call_until_err(&v4l2->v4l2_dev, 0, |
| 1582 | video, g_parm, p); |
| 1583 | else |
| 1584 | v4l2_video_std_frame_period(v4l2->norm, |
| 1585 | &p->parm.capture.timeperframe); |
| 1586 | |
| 1587 | return rc; |
| 1588 | } |
| 1589 | |
| 1590 | static int vidioc_s_parm(struct file *file, void *priv, |
| 1591 | struct v4l2_streamparm *p) |
| 1592 | { |
| 1593 | struct em28xx *dev = video_drvdata(file); |
| 1594 | |
| 1595 | p->parm.capture.readbuffers = EM28XX_MIN_BUF; |
| 1596 | return v4l2_device_call_until_err(&dev->v4l2->v4l2_dev, |
| 1597 | 0, video, s_parm, p); |
| 1598 | } |
| 1599 | |
| 1600 | static int vidioc_enum_input(struct file *file, void *priv, |
| 1601 | struct v4l2_input *i) |
| 1602 | { |
| 1603 | struct em28xx *dev = video_drvdata(file); |
| 1604 | unsigned int n; |
| 1605 | |
| 1606 | n = i->index; |
| 1607 | if (n >= MAX_EM28XX_INPUT) |
| 1608 | return -EINVAL; |
| 1609 | if (0 == INPUT(n)->type) |
| 1610 | return -EINVAL; |
| 1611 | |
| 1612 | i->index = n; |
| 1613 | i->type = V4L2_INPUT_TYPE_CAMERA; |
| 1614 | |
| 1615 | strcpy(i->name, iname[INPUT(n)->type]); |
| 1616 | |
| 1617 | if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type)) |
| 1618 | i->type = V4L2_INPUT_TYPE_TUNER; |
| 1619 | |
| 1620 | i->std = dev->v4l2->vdev.tvnorms; |
| 1621 | /* webcams do not have the STD API */ |
| 1622 | if (dev->board.is_webcam) |
| 1623 | i->capabilities = 0; |
| 1624 | |
| 1625 | return 0; |
| 1626 | } |
| 1627 | |
| 1628 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
| 1629 | { |
| 1630 | struct em28xx *dev = video_drvdata(file); |
| 1631 | |
| 1632 | *i = dev->ctl_input; |
| 1633 | |
| 1634 | return 0; |
| 1635 | } |
| 1636 | |
| 1637 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
| 1638 | { |
| 1639 | struct em28xx *dev = video_drvdata(file); |
| 1640 | |
| 1641 | if (i >= MAX_EM28XX_INPUT) |
| 1642 | return -EINVAL; |
| 1643 | if (0 == INPUT(i)->type) |
| 1644 | return -EINVAL; |
| 1645 | |
| 1646 | video_mux(dev, i); |
| 1647 | return 0; |
| 1648 | } |
| 1649 | |
| 1650 | static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) |
| 1651 | { |
| 1652 | struct em28xx *dev = video_drvdata(file); |
| 1653 | |
| 1654 | switch (a->index) { |
| 1655 | case EM28XX_AMUX_VIDEO: |
| 1656 | strcpy(a->name, "Television"); |
| 1657 | break; |
| 1658 | case EM28XX_AMUX_LINE_IN: |
| 1659 | strcpy(a->name, "Line In"); |
| 1660 | break; |
| 1661 | case EM28XX_AMUX_VIDEO2: |
| 1662 | strcpy(a->name, "Television alt"); |
| 1663 | break; |
| 1664 | case EM28XX_AMUX_PHONE: |
| 1665 | strcpy(a->name, "Phone"); |
| 1666 | break; |
| 1667 | case EM28XX_AMUX_MIC: |
| 1668 | strcpy(a->name, "Mic"); |
| 1669 | break; |
| 1670 | case EM28XX_AMUX_CD: |
| 1671 | strcpy(a->name, "CD"); |
| 1672 | break; |
| 1673 | case EM28XX_AMUX_AUX: |
| 1674 | strcpy(a->name, "Aux"); |
| 1675 | break; |
| 1676 | case EM28XX_AMUX_PCM_OUT: |
| 1677 | strcpy(a->name, "PCM"); |
| 1678 | break; |
| 1679 | default: |
| 1680 | return -EINVAL; |
| 1681 | } |
| 1682 | |
| 1683 | a->index = dev->ctl_ainput; |
| 1684 | a->capability = V4L2_AUDCAP_STEREO; |
| 1685 | |
| 1686 | return 0; |
| 1687 | } |
| 1688 | |
| 1689 | static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a) |
| 1690 | { |
| 1691 | struct em28xx *dev = video_drvdata(file); |
| 1692 | |
| 1693 | if (a->index >= MAX_EM28XX_INPUT) |
| 1694 | return -EINVAL; |
| 1695 | if (0 == INPUT(a->index)->type) |
| 1696 | return -EINVAL; |
| 1697 | |
| 1698 | dev->ctl_ainput = INPUT(a->index)->amux; |
| 1699 | dev->ctl_aoutput = INPUT(a->index)->aout; |
| 1700 | |
| 1701 | if (!dev->ctl_aoutput) |
| 1702 | dev->ctl_aoutput = EM28XX_AOUT_MASTER; |
| 1703 | |
| 1704 | return 0; |
| 1705 | } |
| 1706 | |
| 1707 | static int vidioc_g_tuner(struct file *file, void *priv, |
| 1708 | struct v4l2_tuner *t) |
| 1709 | { |
| 1710 | struct em28xx *dev = video_drvdata(file); |
| 1711 | |
| 1712 | if (0 != t->index) |
| 1713 | return -EINVAL; |
| 1714 | |
| 1715 | strcpy(t->name, "Tuner"); |
| 1716 | |
| 1717 | v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, g_tuner, t); |
| 1718 | return 0; |
| 1719 | } |
| 1720 | |
| 1721 | static int vidioc_s_tuner(struct file *file, void *priv, |
| 1722 | const struct v4l2_tuner *t) |
| 1723 | { |
| 1724 | struct em28xx *dev = video_drvdata(file); |
| 1725 | |
| 1726 | if (0 != t->index) |
| 1727 | return -EINVAL; |
| 1728 | |
| 1729 | v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, s_tuner, t); |
| 1730 | return 0; |
| 1731 | } |
| 1732 | |
| 1733 | static int vidioc_g_frequency(struct file *file, void *priv, |
| 1734 | struct v4l2_frequency *f) |
| 1735 | { |
| 1736 | struct em28xx *dev = video_drvdata(file); |
| 1737 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1738 | |
| 1739 | if (0 != f->tuner) |
| 1740 | return -EINVAL; |
| 1741 | |
| 1742 | f->frequency = v4l2->frequency; |
| 1743 | return 0; |
| 1744 | } |
| 1745 | |
| 1746 | static int vidioc_s_frequency(struct file *file, void *priv, |
| 1747 | const struct v4l2_frequency *f) |
| 1748 | { |
| 1749 | struct v4l2_frequency new_freq = *f; |
| 1750 | struct em28xx *dev = video_drvdata(file); |
| 1751 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1752 | |
| 1753 | if (0 != f->tuner) |
| 1754 | return -EINVAL; |
| 1755 | |
| 1756 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, s_frequency, f); |
| 1757 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, g_frequency, &new_freq); |
| 1758 | v4l2->frequency = new_freq.frequency; |
| 1759 | |
| 1760 | return 0; |
| 1761 | } |
| 1762 | |
| 1763 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 1764 | static int vidioc_g_chip_info(struct file *file, void *priv, |
| 1765 | struct v4l2_dbg_chip_info *chip) |
| 1766 | { |
| 1767 | struct em28xx *dev = video_drvdata(file); |
| 1768 | |
| 1769 | if (chip->match.addr > 1) |
| 1770 | return -EINVAL; |
| 1771 | if (chip->match.addr == 1) |
| 1772 | strlcpy(chip->name, "ac97", sizeof(chip->name)); |
| 1773 | else |
| 1774 | strlcpy(chip->name, |
| 1775 | dev->v4l2->v4l2_dev.name, sizeof(chip->name)); |
| 1776 | return 0; |
| 1777 | } |
| 1778 | |
| 1779 | static int em28xx_reg_len(int reg) |
| 1780 | { |
| 1781 | switch (reg) { |
| 1782 | case EM28XX_R40_AC97LSB: |
| 1783 | case EM28XX_R30_HSCALELOW: |
| 1784 | case EM28XX_R32_VSCALELOW: |
| 1785 | return 2; |
| 1786 | default: |
| 1787 | return 1; |
| 1788 | } |
| 1789 | } |
| 1790 | |
| 1791 | static int vidioc_g_register(struct file *file, void *priv, |
| 1792 | struct v4l2_dbg_register *reg) |
| 1793 | { |
| 1794 | struct em28xx *dev = video_drvdata(file); |
| 1795 | int ret; |
| 1796 | |
| 1797 | if (reg->match.addr > 1) |
| 1798 | return -EINVAL; |
| 1799 | if (reg->match.addr) { |
| 1800 | ret = em28xx_read_ac97(dev, reg->reg); |
| 1801 | if (ret < 0) |
| 1802 | return ret; |
| 1803 | |
| 1804 | reg->val = ret; |
| 1805 | reg->size = 1; |
| 1806 | return 0; |
| 1807 | } |
| 1808 | |
| 1809 | /* Match host */ |
| 1810 | reg->size = em28xx_reg_len(reg->reg); |
| 1811 | if (reg->size == 1) { |
| 1812 | ret = em28xx_read_reg(dev, reg->reg); |
| 1813 | |
| 1814 | if (ret < 0) |
| 1815 | return ret; |
| 1816 | |
| 1817 | reg->val = ret; |
| 1818 | } else { |
| 1819 | __le16 val = 0; |
| 1820 | |
| 1821 | ret = dev->em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, |
| 1822 | reg->reg, (char *)&val, 2); |
| 1823 | if (ret < 0) |
| 1824 | return ret; |
| 1825 | |
| 1826 | reg->val = le16_to_cpu(val); |
| 1827 | } |
| 1828 | |
| 1829 | return 0; |
| 1830 | } |
| 1831 | |
| 1832 | static int vidioc_s_register(struct file *file, void *priv, |
| 1833 | const struct v4l2_dbg_register *reg) |
| 1834 | { |
| 1835 | struct em28xx *dev = video_drvdata(file); |
| 1836 | __le16 buf; |
| 1837 | |
| 1838 | if (reg->match.addr > 1) |
| 1839 | return -EINVAL; |
| 1840 | if (reg->match.addr) |
| 1841 | return em28xx_write_ac97(dev, reg->reg, reg->val); |
| 1842 | |
| 1843 | /* Match host */ |
| 1844 | buf = cpu_to_le16(reg->val); |
| 1845 | |
| 1846 | return em28xx_write_regs(dev, reg->reg, (char *)&buf, |
| 1847 | em28xx_reg_len(reg->reg)); |
| 1848 | } |
| 1849 | #endif |
| 1850 | |
| 1851 | static int vidioc_querycap(struct file *file, void *priv, |
| 1852 | struct v4l2_capability *cap) |
| 1853 | { |
| 1854 | struct video_device *vdev = video_devdata(file); |
| 1855 | struct em28xx *dev = video_drvdata(file); |
| 1856 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1857 | |
| 1858 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); |
| 1859 | strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); |
| 1860 | usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); |
| 1861 | |
| 1862 | if (vdev->vfl_type == VFL_TYPE_GRABBER) |
| 1863 | cap->device_caps = V4L2_CAP_READWRITE | |
| 1864 | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1865 | else if (vdev->vfl_type == VFL_TYPE_RADIO) |
| 1866 | cap->device_caps = V4L2_CAP_RADIO; |
| 1867 | else |
| 1868 | cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE; |
| 1869 | |
| 1870 | if (dev->int_audio_type != EM28XX_INT_AUDIO_NONE) |
| 1871 | cap->device_caps |= V4L2_CAP_AUDIO; |
| 1872 | |
| 1873 | if (dev->tuner_type != TUNER_ABSENT) |
| 1874 | cap->device_caps |= V4L2_CAP_TUNER; |
| 1875 | |
| 1876 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS | |
| 1877 | V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1878 | if (video_is_registered(&v4l2->vbi_dev)) |
| 1879 | cap->capabilities |= V4L2_CAP_VBI_CAPTURE; |
| 1880 | if (video_is_registered(&v4l2->radio_dev)) |
| 1881 | cap->capabilities |= V4L2_CAP_RADIO; |
| 1882 | return 0; |
| 1883 | } |
| 1884 | |
| 1885 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
| 1886 | struct v4l2_fmtdesc *f) |
| 1887 | { |
| 1888 | if (unlikely(f->index >= ARRAY_SIZE(format))) |
| 1889 | return -EINVAL; |
| 1890 | |
| 1891 | strlcpy(f->description, format[f->index].name, sizeof(f->description)); |
| 1892 | f->pixelformat = format[f->index].fourcc; |
| 1893 | |
| 1894 | return 0; |
| 1895 | } |
| 1896 | |
| 1897 | static int vidioc_enum_framesizes(struct file *file, void *priv, |
| 1898 | struct v4l2_frmsizeenum *fsize) |
| 1899 | { |
| 1900 | struct em28xx *dev = video_drvdata(file); |
| 1901 | struct em28xx_fmt *fmt; |
| 1902 | unsigned int maxw = norm_maxw(dev); |
| 1903 | unsigned int maxh = norm_maxh(dev); |
| 1904 | |
| 1905 | fmt = format_by_fourcc(fsize->pixel_format); |
| 1906 | if (!fmt) { |
| 1907 | em28xx_videodbg("Fourcc format (%08x) invalid.\n", |
| 1908 | fsize->pixel_format); |
| 1909 | return -EINVAL; |
| 1910 | } |
| 1911 | |
| 1912 | if (dev->board.is_em2800) { |
| 1913 | if (fsize->index > 1) |
| 1914 | return -EINVAL; |
| 1915 | fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; |
| 1916 | fsize->discrete.width = maxw / (1 + fsize->index); |
| 1917 | fsize->discrete.height = maxh / (1 + fsize->index); |
| 1918 | return 0; |
| 1919 | } |
| 1920 | |
| 1921 | if (fsize->index != 0) |
| 1922 | return -EINVAL; |
| 1923 | |
| 1924 | /* Report a continuous range */ |
| 1925 | fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; |
| 1926 | scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX, |
| 1927 | &fsize->stepwise.min_width, &fsize->stepwise.min_height); |
| 1928 | if (fsize->stepwise.min_width < 48) |
| 1929 | fsize->stepwise.min_width = 48; |
| 1930 | if (fsize->stepwise.min_height < 38) |
| 1931 | fsize->stepwise.min_height = 38; |
| 1932 | fsize->stepwise.max_width = maxw; |
| 1933 | fsize->stepwise.max_height = maxh; |
| 1934 | fsize->stepwise.step_width = 1; |
| 1935 | fsize->stepwise.step_height = 1; |
| 1936 | return 0; |
| 1937 | } |
| 1938 | |
| 1939 | /* RAW VBI ioctls */ |
| 1940 | |
| 1941 | static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, |
| 1942 | struct v4l2_format *format) |
| 1943 | { |
| 1944 | struct em28xx *dev = video_drvdata(file); |
| 1945 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 1946 | |
| 1947 | format->fmt.vbi.samples_per_line = v4l2->vbi_width; |
| 1948 | format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; |
| 1949 | format->fmt.vbi.offset = 0; |
| 1950 | format->fmt.vbi.flags = 0; |
| 1951 | format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; |
| 1952 | format->fmt.vbi.count[0] = v4l2->vbi_height; |
| 1953 | format->fmt.vbi.count[1] = v4l2->vbi_height; |
| 1954 | memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved)); |
| 1955 | |
| 1956 | /* Varies by video standard (NTSC, PAL, etc.) */ |
| 1957 | if (v4l2->norm & V4L2_STD_525_60) { |
| 1958 | /* NTSC */ |
| 1959 | format->fmt.vbi.start[0] = 10; |
| 1960 | format->fmt.vbi.start[1] = 273; |
| 1961 | } else if (v4l2->norm & V4L2_STD_625_50) { |
| 1962 | /* PAL */ |
| 1963 | format->fmt.vbi.start[0] = 6; |
| 1964 | format->fmt.vbi.start[1] = 318; |
| 1965 | } |
| 1966 | |
| 1967 | return 0; |
| 1968 | } |
| 1969 | |
| 1970 | /* ----------------------------------------------------------- */ |
| 1971 | /* RADIO ESPECIFIC IOCTLS */ |
| 1972 | /* ----------------------------------------------------------- */ |
| 1973 | |
| 1974 | static int radio_g_tuner(struct file *file, void *priv, |
| 1975 | struct v4l2_tuner *t) |
| 1976 | { |
| 1977 | struct em28xx *dev = video_drvdata(file); |
| 1978 | |
| 1979 | if (unlikely(t->index > 0)) |
| 1980 | return -EINVAL; |
| 1981 | |
| 1982 | strcpy(t->name, "Radio"); |
| 1983 | |
| 1984 | v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, g_tuner, t); |
| 1985 | |
| 1986 | return 0; |
| 1987 | } |
| 1988 | |
| 1989 | static int radio_s_tuner(struct file *file, void *priv, |
| 1990 | const struct v4l2_tuner *t) |
| 1991 | { |
| 1992 | struct em28xx *dev = video_drvdata(file); |
| 1993 | |
| 1994 | if (0 != t->index) |
| 1995 | return -EINVAL; |
| 1996 | |
| 1997 | v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, s_tuner, t); |
| 1998 | |
| 1999 | return 0; |
| 2000 | } |
| 2001 | |
| 2002 | /* |
| 2003 | * em28xx_free_v4l2() - Free struct em28xx_v4l2 |
| 2004 | * |
| 2005 | * @ref: struct kref for struct em28xx_v4l2 |
| 2006 | * |
| 2007 | * Called when all users of struct em28xx_v4l2 are gone |
| 2008 | */ |
| 2009 | static void em28xx_free_v4l2(struct kref *ref) |
| 2010 | { |
| 2011 | struct em28xx_v4l2 *v4l2 = container_of(ref, struct em28xx_v4l2, ref); |
| 2012 | |
| 2013 | v4l2->dev->v4l2 = NULL; |
| 2014 | kfree(v4l2); |
| 2015 | } |
| 2016 | |
| 2017 | /* |
| 2018 | * em28xx_v4l2_open() |
| 2019 | * inits the device and starts isoc transfer |
| 2020 | */ |
| 2021 | static int em28xx_v4l2_open(struct file *filp) |
| 2022 | { |
| 2023 | struct video_device *vdev = video_devdata(filp); |
| 2024 | struct em28xx *dev = video_drvdata(filp); |
| 2025 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 2026 | enum v4l2_buf_type fh_type = 0; |
| 2027 | int ret; |
| 2028 | |
| 2029 | switch (vdev->vfl_type) { |
| 2030 | case VFL_TYPE_GRABBER: |
| 2031 | fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 2032 | break; |
| 2033 | case VFL_TYPE_VBI: |
| 2034 | fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; |
| 2035 | break; |
| 2036 | case VFL_TYPE_RADIO: |
| 2037 | break; |
| 2038 | default: |
| 2039 | return -EINVAL; |
| 2040 | } |
| 2041 | |
| 2042 | em28xx_videodbg("open dev=%s type=%s users=%d\n", |
| 2043 | video_device_node_name(vdev), v4l2_type_names[fh_type], |
| 2044 | v4l2->users); |
| 2045 | |
| 2046 | if (mutex_lock_interruptible(&dev->lock)) |
| 2047 | return -ERESTARTSYS; |
| 2048 | |
| 2049 | ret = v4l2_fh_open(filp); |
| 2050 | if (ret) { |
| 2051 | em28xx_errdev("%s: v4l2_fh_open() returned error %d\n", |
| 2052 | __func__, ret); |
| 2053 | mutex_unlock(&dev->lock); |
| 2054 | return ret; |
| 2055 | } |
| 2056 | |
| 2057 | if (v4l2->users == 0) { |
| 2058 | em28xx_set_mode(dev, EM28XX_ANALOG_MODE); |
| 2059 | |
| 2060 | if (vdev->vfl_type != VFL_TYPE_RADIO) |
| 2061 | em28xx_resolution_set(dev); |
| 2062 | |
| 2063 | /* |
| 2064 | * Needed, since GPIO might have disabled power |
| 2065 | * of some i2c devices |
| 2066 | */ |
| 2067 | em28xx_wake_i2c(dev); |
| 2068 | } |
| 2069 | |
| 2070 | if (vdev->vfl_type == VFL_TYPE_RADIO) { |
| 2071 | em28xx_videodbg("video_open: setting radio device\n"); |
| 2072 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, s_radio); |
| 2073 | } |
| 2074 | |
| 2075 | kref_get(&dev->ref); |
| 2076 | kref_get(&v4l2->ref); |
| 2077 | v4l2->users++; |
| 2078 | |
| 2079 | mutex_unlock(&dev->lock); |
| 2080 | |
| 2081 | return 0; |
| 2082 | } |
| 2083 | |
| 2084 | /* |
| 2085 | * em28xx_v4l2_fini() |
| 2086 | * unregisters the v4l2,i2c and usb devices |
| 2087 | * called when the device gets disconected or at module unload |
| 2088 | */ |
| 2089 | static int em28xx_v4l2_fini(struct em28xx *dev) |
| 2090 | { |
| 2091 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 2092 | |
| 2093 | if (dev->is_audio_only) { |
| 2094 | /* Shouldn't initialize IR for this interface */ |
| 2095 | return 0; |
| 2096 | } |
| 2097 | |
| 2098 | if (!dev->has_video) { |
| 2099 | /* This device does not support the v4l2 extension */ |
| 2100 | return 0; |
| 2101 | } |
| 2102 | |
| 2103 | if (v4l2 == NULL) |
| 2104 | return 0; |
| 2105 | |
| 2106 | em28xx_info("Closing video extension\n"); |
| 2107 | |
| 2108 | mutex_lock(&dev->lock); |
| 2109 | |
| 2110 | v4l2_device_disconnect(&v4l2->v4l2_dev); |
| 2111 | |
| 2112 | em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); |
| 2113 | |
| 2114 | em28xx_v4l2_media_release(dev); |
| 2115 | |
| 2116 | if (video_is_registered(&v4l2->radio_dev)) { |
| 2117 | em28xx_info("V4L2 device %s deregistered\n", |
| 2118 | video_device_node_name(&v4l2->radio_dev)); |
| 2119 | video_unregister_device(&v4l2->radio_dev); |
| 2120 | } |
| 2121 | if (video_is_registered(&v4l2->vbi_dev)) { |
| 2122 | em28xx_info("V4L2 device %s deregistered\n", |
| 2123 | video_device_node_name(&v4l2->vbi_dev)); |
| 2124 | video_unregister_device(&v4l2->vbi_dev); |
| 2125 | } |
| 2126 | if (video_is_registered(&v4l2->vdev)) { |
| 2127 | em28xx_info("V4L2 device %s deregistered\n", |
| 2128 | video_device_node_name(&v4l2->vdev)); |
| 2129 | video_unregister_device(&v4l2->vdev); |
| 2130 | } |
| 2131 | |
| 2132 | v4l2_ctrl_handler_free(&v4l2->ctrl_handler); |
| 2133 | v4l2_device_unregister(&v4l2->v4l2_dev); |
| 2134 | |
| 2135 | if (v4l2->clk) { |
| 2136 | v4l2_clk_unregister_fixed(v4l2->clk); |
| 2137 | v4l2->clk = NULL; |
| 2138 | } |
| 2139 | |
| 2140 | kref_put(&v4l2->ref, em28xx_free_v4l2); |
| 2141 | |
| 2142 | mutex_unlock(&dev->lock); |
| 2143 | |
| 2144 | kref_put(&dev->ref, em28xx_free_device); |
| 2145 | |
| 2146 | return 0; |
| 2147 | } |
| 2148 | |
| 2149 | static int em28xx_v4l2_suspend(struct em28xx *dev) |
| 2150 | { |
| 2151 | if (dev->is_audio_only) |
| 2152 | return 0; |
| 2153 | |
| 2154 | if (!dev->has_video) |
| 2155 | return 0; |
| 2156 | |
| 2157 | em28xx_info("Suspending video extension\n"); |
| 2158 | em28xx_stop_urbs(dev); |
| 2159 | return 0; |
| 2160 | } |
| 2161 | |
| 2162 | static int em28xx_v4l2_resume(struct em28xx *dev) |
| 2163 | { |
| 2164 | if (dev->is_audio_only) |
| 2165 | return 0; |
| 2166 | |
| 2167 | if (!dev->has_video) |
| 2168 | return 0; |
| 2169 | |
| 2170 | em28xx_info("Resuming video extension\n"); |
| 2171 | /* what do we do here */ |
| 2172 | return 0; |
| 2173 | } |
| 2174 | |
| 2175 | /* |
| 2176 | * em28xx_v4l2_close() |
| 2177 | * stops streaming and deallocates all resources allocated by the v4l2 |
| 2178 | * calls and ioctls |
| 2179 | */ |
| 2180 | static int em28xx_v4l2_close(struct file *filp) |
| 2181 | { |
| 2182 | struct em28xx *dev = video_drvdata(filp); |
| 2183 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 2184 | int errCode; |
| 2185 | |
| 2186 | em28xx_videodbg("users=%d\n", v4l2->users); |
| 2187 | |
| 2188 | vb2_fop_release(filp); |
| 2189 | mutex_lock(&dev->lock); |
| 2190 | |
| 2191 | if (v4l2->users == 1) { |
| 2192 | /* No sense to try to write to the device */ |
| 2193 | if (dev->disconnected) |
| 2194 | goto exit; |
| 2195 | |
| 2196 | /* Save some power by putting tuner to sleep */ |
| 2197 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, core, s_power, 0); |
| 2198 | |
| 2199 | /* do this before setting alternate! */ |
| 2200 | em28xx_set_mode(dev, EM28XX_SUSPEND); |
| 2201 | |
| 2202 | /* set alternate 0 */ |
| 2203 | dev->alt = 0; |
| 2204 | em28xx_videodbg("setting alternate 0\n"); |
| 2205 | errCode = usb_set_interface(dev->udev, 0, 0); |
| 2206 | if (errCode < 0) { |
| 2207 | em28xx_errdev("cannot change alternate number to " |
| 2208 | "0 (error=%i)\n", errCode); |
| 2209 | } |
| 2210 | } |
| 2211 | |
| 2212 | exit: |
| 2213 | v4l2->users--; |
| 2214 | kref_put(&v4l2->ref, em28xx_free_v4l2); |
| 2215 | mutex_unlock(&dev->lock); |
| 2216 | kref_put(&dev->ref, em28xx_free_device); |
| 2217 | |
| 2218 | return 0; |
| 2219 | } |
| 2220 | |
| 2221 | static const struct v4l2_file_operations em28xx_v4l_fops = { |
| 2222 | .owner = THIS_MODULE, |
| 2223 | .open = em28xx_v4l2_open, |
| 2224 | .release = em28xx_v4l2_close, |
| 2225 | .read = vb2_fop_read, |
| 2226 | .poll = vb2_fop_poll, |
| 2227 | .mmap = vb2_fop_mmap, |
| 2228 | .unlocked_ioctl = video_ioctl2, |
| 2229 | }; |
| 2230 | |
| 2231 | static const struct v4l2_ioctl_ops video_ioctl_ops = { |
| 2232 | .vidioc_querycap = vidioc_querycap, |
| 2233 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
| 2234 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, |
| 2235 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, |
| 2236 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, |
| 2237 | .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, |
| 2238 | .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, |
| 2239 | .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, |
| 2240 | .vidioc_enum_framesizes = vidioc_enum_framesizes, |
| 2241 | .vidioc_g_audio = vidioc_g_audio, |
| 2242 | .vidioc_s_audio = vidioc_s_audio, |
| 2243 | |
| 2244 | .vidioc_reqbufs = vb2_ioctl_reqbufs, |
| 2245 | .vidioc_create_bufs = vb2_ioctl_create_bufs, |
| 2246 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
| 2247 | .vidioc_querybuf = vb2_ioctl_querybuf, |
| 2248 | .vidioc_qbuf = vb2_ioctl_qbuf, |
| 2249 | .vidioc_dqbuf = vb2_ioctl_dqbuf, |
| 2250 | |
| 2251 | .vidioc_g_std = vidioc_g_std, |
| 2252 | .vidioc_querystd = vidioc_querystd, |
| 2253 | .vidioc_s_std = vidioc_s_std, |
| 2254 | .vidioc_g_parm = vidioc_g_parm, |
| 2255 | .vidioc_s_parm = vidioc_s_parm, |
| 2256 | .vidioc_enum_input = vidioc_enum_input, |
| 2257 | .vidioc_g_input = vidioc_g_input, |
| 2258 | .vidioc_s_input = vidioc_s_input, |
| 2259 | .vidioc_streamon = vb2_ioctl_streamon, |
| 2260 | .vidioc_streamoff = vb2_ioctl_streamoff, |
| 2261 | .vidioc_g_tuner = vidioc_g_tuner, |
| 2262 | .vidioc_s_tuner = vidioc_s_tuner, |
| 2263 | .vidioc_g_frequency = vidioc_g_frequency, |
| 2264 | .vidioc_s_frequency = vidioc_s_frequency, |
| 2265 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| 2266 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
| 2267 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 2268 | .vidioc_g_chip_info = vidioc_g_chip_info, |
| 2269 | .vidioc_g_register = vidioc_g_register, |
| 2270 | .vidioc_s_register = vidioc_s_register, |
| 2271 | #endif |
| 2272 | }; |
| 2273 | |
| 2274 | static const struct video_device em28xx_video_template = { |
| 2275 | .fops = &em28xx_v4l_fops, |
| 2276 | .ioctl_ops = &video_ioctl_ops, |
| 2277 | .release = video_device_release_empty, |
| 2278 | .tvnorms = V4L2_STD_ALL, |
| 2279 | }; |
| 2280 | |
| 2281 | static const struct v4l2_file_operations radio_fops = { |
| 2282 | .owner = THIS_MODULE, |
| 2283 | .open = em28xx_v4l2_open, |
| 2284 | .release = em28xx_v4l2_close, |
| 2285 | .unlocked_ioctl = video_ioctl2, |
| 2286 | }; |
| 2287 | |
| 2288 | static const struct v4l2_ioctl_ops radio_ioctl_ops = { |
| 2289 | .vidioc_querycap = vidioc_querycap, |
| 2290 | .vidioc_g_tuner = radio_g_tuner, |
| 2291 | .vidioc_s_tuner = radio_s_tuner, |
| 2292 | .vidioc_g_frequency = vidioc_g_frequency, |
| 2293 | .vidioc_s_frequency = vidioc_s_frequency, |
| 2294 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| 2295 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
| 2296 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 2297 | .vidioc_g_chip_info = vidioc_g_chip_info, |
| 2298 | .vidioc_g_register = vidioc_g_register, |
| 2299 | .vidioc_s_register = vidioc_s_register, |
| 2300 | #endif |
| 2301 | }; |
| 2302 | |
| 2303 | static struct video_device em28xx_radio_template = { |
| 2304 | .fops = &radio_fops, |
| 2305 | .ioctl_ops = &radio_ioctl_ops, |
| 2306 | .release = video_device_release_empty, |
| 2307 | }; |
| 2308 | |
| 2309 | /* I2C possible address to saa7115, tvp5150, msp3400, tvaudio */ |
| 2310 | static unsigned short saa711x_addrs[] = { |
| 2311 | 0x4a >> 1, 0x48 >> 1, /* SAA7111, SAA7111A and SAA7113 */ |
| 2312 | 0x42 >> 1, 0x40 >> 1, /* SAA7114, SAA7115 and SAA7118 */ |
| 2313 | I2C_CLIENT_END }; |
| 2314 | |
| 2315 | static unsigned short tvp5150_addrs[] = { |
| 2316 | 0xb8 >> 1, |
| 2317 | 0xba >> 1, |
| 2318 | I2C_CLIENT_END |
| 2319 | }; |
| 2320 | |
| 2321 | static unsigned short msp3400_addrs[] = { |
| 2322 | 0x80 >> 1, |
| 2323 | 0x88 >> 1, |
| 2324 | I2C_CLIENT_END |
| 2325 | }; |
| 2326 | |
| 2327 | /******************************** usb interface ******************************/ |
| 2328 | |
| 2329 | static void em28xx_vdev_init(struct em28xx *dev, |
| 2330 | struct video_device *vfd, |
| 2331 | const struct video_device *template, |
| 2332 | const char *type_name) |
| 2333 | { |
| 2334 | *vfd = *template; |
| 2335 | vfd->v4l2_dev = &dev->v4l2->v4l2_dev; |
| 2336 | vfd->lock = &dev->lock; |
| 2337 | if (dev->board.is_webcam) |
| 2338 | vfd->tvnorms = 0; |
| 2339 | |
| 2340 | snprintf(vfd->name, sizeof(vfd->name), "%s %s", |
| 2341 | dev->name, type_name); |
| 2342 | |
| 2343 | video_set_drvdata(vfd, dev); |
| 2344 | } |
| 2345 | |
| 2346 | static void em28xx_tuner_setup(struct em28xx *dev, unsigned short tuner_addr) |
| 2347 | { |
| 2348 | struct em28xx_v4l2 *v4l2 = dev->v4l2; |
| 2349 | struct v4l2_device *v4l2_dev = &v4l2->v4l2_dev; |
| 2350 | struct tuner_setup tun_setup; |
| 2351 | struct v4l2_frequency f; |
| 2352 | |
| 2353 | memset(&tun_setup, 0, sizeof(tun_setup)); |
| 2354 | |
| 2355 | tun_setup.mode_mask = T_ANALOG_TV | T_RADIO; |
| 2356 | tun_setup.tuner_callback = em28xx_tuner_callback; |
| 2357 | |
| 2358 | if (dev->board.radio.type) { |
| 2359 | tun_setup.type = dev->board.radio.type; |
| 2360 | tun_setup.addr = dev->board.radio_addr; |
| 2361 | |
| 2362 | v4l2_device_call_all(v4l2_dev, |
| 2363 | 0, tuner, s_type_addr, &tun_setup); |
| 2364 | } |
| 2365 | |
| 2366 | if ((dev->tuner_type != TUNER_ABSENT) && (dev->tuner_type)) { |
| 2367 | tun_setup.type = dev->tuner_type; |
| 2368 | tun_setup.addr = tuner_addr; |
| 2369 | |
| 2370 | v4l2_device_call_all(v4l2_dev, |
| 2371 | 0, tuner, s_type_addr, &tun_setup); |
| 2372 | } |
| 2373 | |
| 2374 | if (dev->board.tda9887_conf) { |
| 2375 | struct v4l2_priv_tun_config tda9887_cfg; |
| 2376 | |
| 2377 | tda9887_cfg.tuner = TUNER_TDA9887; |
| 2378 | tda9887_cfg.priv = &dev->board.tda9887_conf; |
| 2379 | |
| 2380 | v4l2_device_call_all(v4l2_dev, |
| 2381 | 0, tuner, s_config, &tda9887_cfg); |
| 2382 | } |
| 2383 | |
| 2384 | if (dev->tuner_type == TUNER_XC2028) { |
| 2385 | struct v4l2_priv_tun_config xc2028_cfg; |
| 2386 | struct xc2028_ctrl ctl; |
| 2387 | |
| 2388 | memset(&xc2028_cfg, 0, sizeof(xc2028_cfg)); |
| 2389 | memset(&ctl, 0, sizeof(ctl)); |
| 2390 | |
| 2391 | em28xx_setup_xc3028(dev, &ctl); |
| 2392 | |
| 2393 | xc2028_cfg.tuner = TUNER_XC2028; |
| 2394 | xc2028_cfg.priv = &ctl; |
| 2395 | |
| 2396 | v4l2_device_call_all(v4l2_dev, 0, tuner, s_config, &xc2028_cfg); |
| 2397 | } |
| 2398 | |
| 2399 | /* configure tuner */ |
| 2400 | f.tuner = 0; |
| 2401 | f.type = V4L2_TUNER_ANALOG_TV; |
| 2402 | f.frequency = 9076; /* just a magic number */ |
| 2403 | v4l2->frequency = f.frequency; |
| 2404 | v4l2_device_call_all(v4l2_dev, 0, tuner, s_frequency, &f); |
| 2405 | } |
| 2406 | |
| 2407 | static int em28xx_v4l2_init(struct em28xx *dev) |
| 2408 | { |
| 2409 | u8 val; |
| 2410 | int ret; |
| 2411 | unsigned int maxw; |
| 2412 | struct v4l2_ctrl_handler *hdl; |
| 2413 | struct em28xx_v4l2 *v4l2; |
| 2414 | |
| 2415 | if (dev->is_audio_only) { |
| 2416 | /* Shouldn't initialize IR for this interface */ |
| 2417 | return 0; |
| 2418 | } |
| 2419 | |
| 2420 | if (!dev->has_video) { |
| 2421 | /* This device does not support the v4l2 extension */ |
| 2422 | return 0; |
| 2423 | } |
| 2424 | |
| 2425 | em28xx_info("Registering V4L2 extension\n"); |
| 2426 | |
| 2427 | mutex_lock(&dev->lock); |
| 2428 | |
| 2429 | v4l2 = kzalloc(sizeof(struct em28xx_v4l2), GFP_KERNEL); |
| 2430 | if (v4l2 == NULL) { |
| 2431 | em28xx_info("em28xx_v4l: memory allocation failed\n"); |
| 2432 | mutex_unlock(&dev->lock); |
| 2433 | return -ENOMEM; |
| 2434 | } |
| 2435 | kref_init(&v4l2->ref); |
| 2436 | v4l2->dev = dev; |
| 2437 | dev->v4l2 = v4l2; |
| 2438 | |
| 2439 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 2440 | v4l2->v4l2_dev.mdev = dev->media_dev; |
| 2441 | #endif |
| 2442 | ret = v4l2_device_register(&dev->udev->dev, &v4l2->v4l2_dev); |
| 2443 | if (ret < 0) { |
| 2444 | em28xx_errdev("Call to v4l2_device_register() failed!\n"); |
| 2445 | goto err; |
| 2446 | } |
| 2447 | |
| 2448 | hdl = &v4l2->ctrl_handler; |
| 2449 | v4l2_ctrl_handler_init(hdl, 8); |
| 2450 | v4l2->v4l2_dev.ctrl_handler = hdl; |
| 2451 | |
| 2452 | if (dev->board.is_webcam) |
| 2453 | v4l2->progressive = true; |
| 2454 | |
| 2455 | /* |
| 2456 | * Default format, used for tvp5150 or saa711x output formats |
| 2457 | */ |
| 2458 | v4l2->vinmode = 0x10; |
| 2459 | v4l2->vinctl = EM28XX_VINCTRL_INTERLACED | |
| 2460 | EM28XX_VINCTRL_CCIR656_ENABLE; |
| 2461 | |
| 2462 | /* request some modules */ |
| 2463 | |
| 2464 | if (dev->board.has_msp34xx) |
| 2465 | v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2466 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2467 | "msp3400", 0, msp3400_addrs); |
| 2468 | |
| 2469 | if (dev->board.decoder == EM28XX_SAA711X) |
| 2470 | v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2471 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2472 | "saa7115_auto", 0, saa711x_addrs); |
| 2473 | |
| 2474 | if (dev->board.decoder == EM28XX_TVP5150) |
| 2475 | v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2476 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2477 | "tvp5150", 0, tvp5150_addrs); |
| 2478 | |
| 2479 | if (dev->board.adecoder == EM28XX_TVAUDIO) |
| 2480 | v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2481 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2482 | "tvaudio", dev->board.tvaudio_addr, NULL); |
| 2483 | |
| 2484 | /* Initialize tuner and camera */ |
| 2485 | |
| 2486 | if (dev->board.tuner_type != TUNER_ABSENT) { |
| 2487 | unsigned short tuner_addr = dev->board.tuner_addr; |
| 2488 | int has_demod = (dev->board.tda9887_conf & TDA9887_PRESENT); |
| 2489 | |
| 2490 | if (dev->board.radio.type) |
| 2491 | v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2492 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2493 | "tuner", dev->board.radio_addr, |
| 2494 | NULL); |
| 2495 | |
| 2496 | if (has_demod) |
| 2497 | v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2498 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2499 | "tuner", 0, |
| 2500 | v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); |
| 2501 | if (tuner_addr == 0) { |
| 2502 | enum v4l2_i2c_tuner_type type = |
| 2503 | has_demod ? ADDRS_TV_WITH_DEMOD : ADDRS_TV; |
| 2504 | struct v4l2_subdev *sd; |
| 2505 | |
| 2506 | sd = v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2507 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2508 | "tuner", 0, |
| 2509 | v4l2_i2c_tuner_addrs(type)); |
| 2510 | |
| 2511 | if (sd) |
| 2512 | tuner_addr = v4l2_i2c_subdev_addr(sd); |
| 2513 | } else { |
| 2514 | v4l2_i2c_new_subdev(&v4l2->v4l2_dev, |
| 2515 | &dev->i2c_adap[dev->def_i2c_bus], |
| 2516 | "tuner", tuner_addr, NULL); |
| 2517 | } |
| 2518 | |
| 2519 | em28xx_tuner_setup(dev, tuner_addr); |
| 2520 | } |
| 2521 | |
| 2522 | if (dev->em28xx_sensor != EM28XX_NOSENSOR) |
| 2523 | em28xx_init_camera(dev); |
| 2524 | |
| 2525 | /* Configure audio */ |
| 2526 | ret = em28xx_audio_setup(dev); |
| 2527 | if (ret < 0) { |
| 2528 | em28xx_errdev("%s: Error while setting audio - error [%d]!\n", |
| 2529 | __func__, ret); |
| 2530 | goto unregister_dev; |
| 2531 | } |
| 2532 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { |
| 2533 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2534 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); |
| 2535 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2536 | V4L2_CID_AUDIO_VOLUME, 0, 0x1f, 1, 0x1f); |
| 2537 | } else { |
| 2538 | /* install the em28xx notify callback */ |
| 2539 | v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_MUTE), |
| 2540 | em28xx_ctrl_notify, dev); |
| 2541 | v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_VOLUME), |
| 2542 | em28xx_ctrl_notify, dev); |
| 2543 | } |
| 2544 | |
| 2545 | /* wake i2c devices */ |
| 2546 | em28xx_wake_i2c(dev); |
| 2547 | |
| 2548 | /* init video dma queues */ |
| 2549 | INIT_LIST_HEAD(&dev->vidq.active); |
| 2550 | INIT_LIST_HEAD(&dev->vbiq.active); |
| 2551 | |
| 2552 | if (dev->board.has_msp34xx) { |
| 2553 | /* Send a reset to other chips via gpio */ |
| 2554 | ret = em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xf7); |
| 2555 | if (ret < 0) { |
| 2556 | em28xx_errdev("%s: em28xx_write_reg - msp34xx(1) failed! error [%d]\n", |
| 2557 | __func__, ret); |
| 2558 | goto unregister_dev; |
| 2559 | } |
| 2560 | msleep(3); |
| 2561 | |
| 2562 | ret = em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xff); |
| 2563 | if (ret < 0) { |
| 2564 | em28xx_errdev("%s: em28xx_write_reg - msp34xx(2) failed! error [%d]\n", |
| 2565 | __func__, ret); |
| 2566 | goto unregister_dev; |
| 2567 | } |
| 2568 | msleep(3); |
| 2569 | } |
| 2570 | |
| 2571 | /* set default norm */ |
| 2572 | v4l2->norm = V4L2_STD_PAL; |
| 2573 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_std, v4l2->norm); |
| 2574 | v4l2->interlaced_fieldmode = EM28XX_INTERLACED_DEFAULT; |
| 2575 | |
| 2576 | /* Analog specific initialization */ |
| 2577 | v4l2->format = &format[0]; |
| 2578 | |
| 2579 | maxw = norm_maxw(dev); |
| 2580 | /* MaxPacketSize for em2800 is too small to capture at full resolution |
| 2581 | * use half of maxw as the scaler can only scale to 50% */ |
| 2582 | if (dev->board.is_em2800) |
| 2583 | maxw /= 2; |
| 2584 | |
| 2585 | em28xx_set_video_format(dev, format[0].fourcc, |
| 2586 | maxw, norm_maxh(dev)); |
| 2587 | |
| 2588 | video_mux(dev, 0); |
| 2589 | |
| 2590 | /* Audio defaults */ |
| 2591 | dev->mute = 1; |
| 2592 | dev->volume = 0x1f; |
| 2593 | |
| 2594 | /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */ |
| 2595 | val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK); |
| 2596 | em28xx_write_reg(dev, EM28XX_R0F_XCLK, |
| 2597 | (EM28XX_XCLK_AUDIO_UNMUTE | val)); |
| 2598 | |
| 2599 | em28xx_set_outfmt(dev); |
| 2600 | |
| 2601 | /* Add image controls */ |
| 2602 | /* NOTE: at this point, the subdevices are already registered, so bridge |
| 2603 | * controls are only added/enabled when no subdevice provides them */ |
| 2604 | if (NULL == v4l2_ctrl_find(hdl, V4L2_CID_CONTRAST)) |
| 2605 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2606 | V4L2_CID_CONTRAST, |
| 2607 | 0, 0x1f, 1, CONTRAST_DEFAULT); |
| 2608 | if (NULL == v4l2_ctrl_find(hdl, V4L2_CID_BRIGHTNESS)) |
| 2609 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2610 | V4L2_CID_BRIGHTNESS, |
| 2611 | -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT); |
| 2612 | if (NULL == v4l2_ctrl_find(hdl, V4L2_CID_SATURATION)) |
| 2613 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2614 | V4L2_CID_SATURATION, |
| 2615 | 0, 0x1f, 1, SATURATION_DEFAULT); |
| 2616 | if (NULL == v4l2_ctrl_find(hdl, V4L2_CID_BLUE_BALANCE)) |
| 2617 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2618 | V4L2_CID_BLUE_BALANCE, |
| 2619 | -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT); |
| 2620 | if (NULL == v4l2_ctrl_find(hdl, V4L2_CID_RED_BALANCE)) |
| 2621 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2622 | V4L2_CID_RED_BALANCE, |
| 2623 | -0x30, 0x30, 1, RED_BALANCE_DEFAULT); |
| 2624 | if (NULL == v4l2_ctrl_find(hdl, V4L2_CID_SHARPNESS)) |
| 2625 | v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, |
| 2626 | V4L2_CID_SHARPNESS, |
| 2627 | 0, 0x0f, 1, SHARPNESS_DEFAULT); |
| 2628 | |
| 2629 | /* Reset image controls */ |
| 2630 | em28xx_colorlevels_set_default(dev); |
| 2631 | v4l2_ctrl_handler_setup(hdl); |
| 2632 | ret = hdl->error; |
| 2633 | if (ret) |
| 2634 | goto unregister_dev; |
| 2635 | |
| 2636 | /* allocate and fill video video_device struct */ |
| 2637 | em28xx_vdev_init(dev, &v4l2->vdev, &em28xx_video_template, "video"); |
| 2638 | mutex_init(&v4l2->vb_queue_lock); |
| 2639 | mutex_init(&v4l2->vb_vbi_queue_lock); |
| 2640 | v4l2->vdev.queue = &v4l2->vb_vidq; |
| 2641 | v4l2->vdev.queue->lock = &v4l2->vb_queue_lock; |
| 2642 | |
| 2643 | /* disable inapplicable ioctls */ |
| 2644 | if (dev->board.is_webcam) { |
| 2645 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_QUERYSTD); |
| 2646 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_STD); |
| 2647 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_STD); |
| 2648 | } else { |
| 2649 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_PARM); |
| 2650 | } |
| 2651 | if (dev->tuner_type == TUNER_ABSENT) { |
| 2652 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_TUNER); |
| 2653 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_TUNER); |
| 2654 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_FREQUENCY); |
| 2655 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_FREQUENCY); |
| 2656 | } |
| 2657 | if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) { |
| 2658 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_AUDIO); |
| 2659 | v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_AUDIO); |
| 2660 | } |
| 2661 | |
| 2662 | /* register v4l2 video video_device */ |
| 2663 | ret = video_register_device(&v4l2->vdev, VFL_TYPE_GRABBER, |
| 2664 | video_nr[dev->devno]); |
| 2665 | if (ret) { |
| 2666 | em28xx_errdev("unable to register video device (error=%i).\n", |
| 2667 | ret); |
| 2668 | goto unregister_dev; |
| 2669 | } |
| 2670 | |
| 2671 | /* Allocate and fill vbi video_device struct */ |
| 2672 | if (em28xx_vbi_supported(dev) == 1) { |
| 2673 | em28xx_vdev_init(dev, &v4l2->vbi_dev, &em28xx_video_template, |
| 2674 | "vbi"); |
| 2675 | |
| 2676 | v4l2->vbi_dev.queue = &v4l2->vb_vbiq; |
| 2677 | v4l2->vbi_dev.queue->lock = &v4l2->vb_vbi_queue_lock; |
| 2678 | |
| 2679 | /* disable inapplicable ioctls */ |
| 2680 | v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_PARM); |
| 2681 | if (dev->tuner_type == TUNER_ABSENT) { |
| 2682 | v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_TUNER); |
| 2683 | v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_TUNER); |
| 2684 | v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_FREQUENCY); |
| 2685 | v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_FREQUENCY); |
| 2686 | } |
| 2687 | if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) { |
| 2688 | v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_AUDIO); |
| 2689 | v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_AUDIO); |
| 2690 | } |
| 2691 | |
| 2692 | /* register v4l2 vbi video_device */ |
| 2693 | ret = video_register_device(&v4l2->vbi_dev, VFL_TYPE_VBI, |
| 2694 | vbi_nr[dev->devno]); |
| 2695 | if (ret < 0) { |
| 2696 | em28xx_errdev("unable to register vbi device\n"); |
| 2697 | goto unregister_dev; |
| 2698 | } |
| 2699 | } |
| 2700 | |
| 2701 | if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { |
| 2702 | em28xx_vdev_init(dev, &v4l2->radio_dev, &em28xx_radio_template, |
| 2703 | "radio"); |
| 2704 | ret = video_register_device(&v4l2->radio_dev, VFL_TYPE_RADIO, |
| 2705 | radio_nr[dev->devno]); |
| 2706 | if (ret < 0) { |
| 2707 | em28xx_errdev("can't register radio device\n"); |
| 2708 | goto unregister_dev; |
| 2709 | } |
| 2710 | em28xx_info("Registered radio device as %s\n", |
| 2711 | video_device_node_name(&v4l2->radio_dev)); |
| 2712 | } |
| 2713 | |
| 2714 | /* Init entities at the Media Controller */ |
| 2715 | em28xx_v4l2_create_entities(dev); |
| 2716 | |
| 2717 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 2718 | ret = v4l2_mc_create_media_graph(dev->media_dev); |
| 2719 | if (ret) { |
| 2720 | em28xx_errdev("failed to create media graph\n"); |
| 2721 | em28xx_v4l2_media_release(dev); |
| 2722 | goto unregister_dev; |
| 2723 | } |
| 2724 | #endif |
| 2725 | |
| 2726 | em28xx_info("V4L2 video device registered as %s\n", |
| 2727 | video_device_node_name(&v4l2->vdev)); |
| 2728 | |
| 2729 | if (video_is_registered(&v4l2->vbi_dev)) |
| 2730 | em28xx_info("V4L2 VBI device registered as %s\n", |
| 2731 | video_device_node_name(&v4l2->vbi_dev)); |
| 2732 | |
| 2733 | /* Save some power by putting tuner to sleep */ |
| 2734 | v4l2_device_call_all(&v4l2->v4l2_dev, 0, core, s_power, 0); |
| 2735 | |
| 2736 | /* initialize videobuf2 stuff */ |
| 2737 | em28xx_vb2_setup(dev); |
| 2738 | |
| 2739 | em28xx_info("V4L2 extension successfully initialized\n"); |
| 2740 | |
| 2741 | kref_get(&dev->ref); |
| 2742 | |
| 2743 | mutex_unlock(&dev->lock); |
| 2744 | return 0; |
| 2745 | |
| 2746 | unregister_dev: |
| 2747 | if (video_is_registered(&v4l2->radio_dev)) { |
| 2748 | em28xx_info("V4L2 device %s deregistered\n", |
| 2749 | video_device_node_name(&v4l2->radio_dev)); |
| 2750 | video_unregister_device(&v4l2->radio_dev); |
| 2751 | } |
| 2752 | if (video_is_registered(&v4l2->vbi_dev)) { |
| 2753 | em28xx_info("V4L2 device %s deregistered\n", |
| 2754 | video_device_node_name(&v4l2->vbi_dev)); |
| 2755 | video_unregister_device(&v4l2->vbi_dev); |
| 2756 | } |
| 2757 | if (video_is_registered(&v4l2->vdev)) { |
| 2758 | em28xx_info("V4L2 device %s deregistered\n", |
| 2759 | video_device_node_name(&v4l2->vdev)); |
| 2760 | video_unregister_device(&v4l2->vdev); |
| 2761 | } |
| 2762 | |
| 2763 | v4l2_ctrl_handler_free(&v4l2->ctrl_handler); |
| 2764 | v4l2_device_unregister(&v4l2->v4l2_dev); |
| 2765 | err: |
| 2766 | dev->v4l2 = NULL; |
| 2767 | kref_put(&v4l2->ref, em28xx_free_v4l2); |
| 2768 | mutex_unlock(&dev->lock); |
| 2769 | return ret; |
| 2770 | } |
| 2771 | |
| 2772 | static struct em28xx_ops v4l2_ops = { |
| 2773 | .id = EM28XX_V4L2, |
| 2774 | .name = "Em28xx v4l2 Extension", |
| 2775 | .init = em28xx_v4l2_init, |
| 2776 | .fini = em28xx_v4l2_fini, |
| 2777 | .suspend = em28xx_v4l2_suspend, |
| 2778 | .resume = em28xx_v4l2_resume, |
| 2779 | }; |
| 2780 | |
| 2781 | static int __init em28xx_video_register(void) |
| 2782 | { |
| 2783 | return em28xx_register_extension(&v4l2_ops); |
| 2784 | } |
| 2785 | |
| 2786 | static void __exit em28xx_video_unregister(void) |
| 2787 | { |
| 2788 | em28xx_unregister_extension(&v4l2_ops); |
| 2789 | } |
| 2790 | |
| 2791 | module_init(em28xx_video_register); |
| 2792 | module_exit(em28xx_video_unregister); |