/* * cx18 ioctl system call * * Derived from ivtv-ioctl.c * * Copyright (C) 2007 Hans Verkuil * Copyright (C) 2008 Andy Walls * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA * 02111-1307 USA */ #include "cx18-driver.h" #include "cx18-io.h" #include "cx18-version.h" #include "cx18-mailbox.h" #include "cx18-i2c.h" #include "cx18-queue.h" #include "cx18-fileops.h" #include "cx18-vbi.h" #include "cx18-audio.h" #include "cx18-video.h" #include "cx18-streams.h" #include "cx18-ioctl.h" #include "cx18-gpio.h" #include "cx18-controls.h" #include "cx18-cards.h" #include "cx18-av-core.h" #include #include u16 cx18_service2vbi(int type) { switch (type) { case V4L2_SLICED_TELETEXT_B: return CX18_SLICED_TYPE_TELETEXT_B; case V4L2_SLICED_CAPTION_525: return CX18_SLICED_TYPE_CAPTION_525; case V4L2_SLICED_WSS_625: return CX18_SLICED_TYPE_WSS_625; case V4L2_SLICED_VPS: return CX18_SLICED_TYPE_VPS; default: return 0; } } /* Check if VBI services are allowed on the (field, line) for the video std */ static int valid_service_line(int field, int line, int is_pal) { return (is_pal && line >= 6 && ((field == 0 && line <= 23) || (field == 1 && line <= 22))) || (!is_pal && line >= 10 && line < 22); } /* * For a (field, line, std) and inbound potential set of services for that line, * return the first valid service of those passed in the incoming set for that * line in priority order: * CC, VPS, or WSS over TELETEXT for well known lines * TELETEXT, before VPS, before CC, before WSS, for other lines */ static u16 select_service_from_set(int field, int line, u16 set, int is_pal) { u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525); int i; set = set & valid_set; if (set == 0 || !valid_service_line(field, line, is_pal)) return 0; if (!is_pal) { if (line == 21 && (set & V4L2_SLICED_CAPTION_525)) return V4L2_SLICED_CAPTION_525; } else { if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS)) return V4L2_SLICED_VPS; if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625)) return V4L2_SLICED_WSS_625; if (line == 23) return 0; } for (i = 0; i < 32; i++) { if ((1 << i) & set) return 1 << i; } return 0; } /* * Expand the service_set of *fmt into valid service_lines for the std, * and clear the passed in fmt->service_set */ void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal) { u16 set = fmt->service_set; int f, l; fmt->service_set = 0; for (f = 0; f < 2; f++) { for (l = 0; l < 24; l++) fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal); } } /* * Sanitize the service_lines in *fmt per the video std, and return 1 * if any service_line is left as valid after santization */ static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal) { int f, l; u16 set = 0; for (f = 0; f < 2; f++) { for (l = 0; l < 24; l++) { fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal); set |= fmt->service_lines[f][l]; } } return set != 0; } /* Compute the service_set from the assumed valid service_lines of *fmt */ u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt) { int f, l; u16 set = 0; for (f = 0; f < 2; f++) { for (l = 0; l < 24; l++) set |= fmt->service_lines[f][l]; } return set; } static int cx18_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; pixfmt->width = cx->cxhdl.width; pixfmt->height = cx->cxhdl.height; pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M; pixfmt->field = V4L2_FIELD_INTERLACED; pixfmt->priv = 0; if (id->type == CX18_ENC_STREAM_TYPE_YUV) { pixfmt->pixelformat = V4L2_PIX_FMT_HM12; /* YUV size is (Y=(h*720) + UV=(h*(720/2))) */ pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2; pixfmt->bytesperline = 720; } else { pixfmt->pixelformat = V4L2_PIX_FMT_MPEG; pixfmt->sizeimage = 128 * 1024; pixfmt->bytesperline = 0; } return 0; } static int cx18_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18 *cx = fh2id(fh)->cx; struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi; vbifmt->sampling_rate = 27000000; vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */ vbifmt->samples_per_line = vbi_active_samples - 4; vbifmt->sample_format = V4L2_PIX_FMT_GREY; vbifmt->start[0] = cx->vbi.start[0]; vbifmt->start[1] = cx->vbi.start[1]; vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count; vbifmt->flags = 0; vbifmt->reserved[0] = 0; vbifmt->reserved[1] = 0; return 0; } static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18 *cx = fh2id(fh)->cx; struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced; /* sane, V4L2 spec compliant, defaults */ vbifmt->reserved[0] = 0; vbifmt->reserved[1] = 0; vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines)); vbifmt->service_set = 0; /* * Fetch the configured service_lines and total service_set from the * digitizer/slicer. Note, cx18_av_vbi() wipes the passed in * fmt->fmt.sliced under valid calling conditions */ if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced)) return -EINVAL; /* Ensure V4L2 spec compliant output */ vbifmt->reserved[0] = 0; vbifmt->reserved[1] = 0; vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; vbifmt->service_set = cx18_get_service_set(vbifmt); return 0; } static int cx18_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int w = fmt->fmt.pix.width; int h = fmt->fmt.pix.height; int min_h = 2; w = min(w, 720); w = max(w, 2); if (id->type == CX18_ENC_STREAM_TYPE_YUV) { /* YUV height must be a multiple of 32 */ h &= ~0x1f; min_h = 32; } h = min(h, cx->is_50hz ? 576 : 480); h = max(h, min_h); cx18_g_fmt_vid_cap(file, fh, fmt); fmt->fmt.pix.width = w; fmt->fmt.pix.height = h; return 0; } static int cx18_try_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { return cx18_g_fmt_vbi_cap(file, fh, fmt); } static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18 *cx = fh2id(fh)->cx; struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced; vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; vbifmt->reserved[0] = 0; vbifmt->reserved[1] = 0; /* If given a service set, expand it validly & clear passed in set */ if (vbifmt->service_set) cx18_expand_service_set(vbifmt, cx->is_50hz); /* Sanitize the service_lines, and compute the new set if any valid */ if (check_service_set(vbifmt, cx->is_50hz)) vbifmt->service_set = cx18_get_service_set(vbifmt); return 0; } static int cx18_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; struct v4l2_mbus_framefmt mbus_fmt; int ret; int w, h; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; ret = cx18_try_fmt_vid_cap(file, fh, fmt); if (ret) return ret; w = fmt->fmt.pix.width; h = fmt->fmt.pix.height; if (cx->cxhdl.width == w && cx->cxhdl.height == h) return 0; if (atomic_read(&cx->ana_capturing) > 0) return -EBUSY; mbus_fmt.width = cx->cxhdl.width = w; mbus_fmt.height = cx->cxhdl.height = h; mbus_fmt.code = V4L2_MBUS_FMT_FIXED; v4l2_subdev_call(cx->sd_av, video, s_mbus_fmt, &mbus_fmt); return cx18_g_fmt_vid_cap(file, fh, fmt); } static int cx18_s_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int ret; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; /* * Changing the Encoder's Raw VBI parameters won't have any effect * if any analog capture is ongoing */ if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0) return -EBUSY; /* * Set the digitizer registers for raw active VBI. * Note cx18_av_vbi_wipes out alot of the passed in fmt under valid * calling conditions */ ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi); if (ret) return ret; /* Store our new v4l2 (non-)sliced VBI state */ cx->vbi.sliced_in->service_set = 0; cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE; return cx18_g_fmt_vbi_cap(file, fh, fmt); } static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int ret; struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; cx18_try_fmt_sliced_vbi_cap(file, fh, fmt); /* * Changing the Encoder's Raw VBI parameters won't have any effect * if any analog capture is ongoing */ if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0) return -EBUSY; /* * Set the service_lines requested in the digitizer/slicer registers. * Note, cx18_av_vbi() wipes some "impossible" service lines in the * passed in fmt->fmt.sliced under valid calling conditions */ ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced); if (ret) return ret; /* Store our current v4l2 sliced VBI settings */ cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE; memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in)); return 0; } static int cx18_g_chip_ident(struct file *file, void *fh, struct v4l2_dbg_chip_ident *chip) { struct cx18 *cx = fh2id(fh)->cx; int err = 0; chip->ident = V4L2_IDENT_NONE; chip->revision = 0; switch (chip->match.type) { case V4L2_CHIP_MATCH_HOST: switch (chip->match.addr) { case 0: chip->ident = V4L2_IDENT_CX23418; chip->revision = cx18_read_reg(cx, 0xC72028); break; case 1: /* * The A/V decoder is always present, but in the rare * case that the card doesn't have analog, we don't * use it. We find it w/o using the cx->sd_av pointer */ cx18_call_hw(cx, CX18_HW_418_AV, core, g_chip_ident, chip); break; default: /* * Could return ident = V4L2_IDENT_UNKNOWN if we had * other host chips at higher addresses, but we don't */ err = -EINVAL; /* per V4L2 spec */ break; } break; case V4L2_CHIP_MATCH_I2C_DRIVER: /* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */ cx18_call_all(cx, core, g_chip_ident, chip); break; case V4L2_CHIP_MATCH_I2C_ADDR: /* * We could return V4L2_IDENT_UNKNOWN, but we don't do the work * to look if a chip is at the address with no driver. That's a * dangerous thing to do with EEPROMs anyway. */ cx18_call_all(cx, core, g_chip_ident, chip); break; default: err = -EINVAL; break; } return err; } #ifdef CONFIG_VIDEO_ADV_DEBUG static int cx18_cxc(struct cx18 *cx, unsigned int cmd, void *arg) { struct v4l2_dbg_register *regs = arg; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (regs->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE) return -EINVAL; regs->size = 4; if (cmd == VIDIOC_DBG_S_REGISTER) cx18_write_enc(cx, regs->val, regs->reg); else regs->val = cx18_read_enc(cx, regs->reg); return 0; } static int cx18_g_register(struct file *file, void *fh, struct v4l2_dbg_register *reg) { struct cx18 *cx = fh2id(fh)->cx; if (v4l2_chip_match_host(®->match)) return cx18_cxc(cx, VIDIOC_DBG_G_REGISTER, reg); /* FIXME - errors shouldn't be ignored */ cx18_call_all(cx, core, g_register, reg); return 0; } static int cx18_s_register(struct file *file, void *fh, struct v4l2_dbg_register *reg) { struct cx18 *cx = fh2id(fh)->cx; if (v4l2_chip_match_host(®->match)) return cx18_cxc(cx, VIDIOC_DBG_S_REGISTER, reg); /* FIXME - errors shouldn't be ignored */ cx18_call_all(cx, core, s_register, reg); return 0; } #endif static int cx18_g_priority(struct file *file, void *fh, enum v4l2_priority *p) { struct cx18 *cx = file2id(file)->cx; *p = v4l2_prio_max(&cx->prio); return 0; } static int cx18_s_priority(struct file *file, void *fh, enum v4l2_priority prio) { struct cx18_open_id *id = file2id(file); struct cx18 *cx = id->cx; return v4l2_prio_change(&cx->prio, &id->prio, prio); } static int cx18_querycap(struct file *file, void *fh, struct v4l2_capability *vcap) { struct cx18 *cx = fh2id(fh)->cx; strlcpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver)); strlcpy(vcap->card, cx->card_name, sizeof(vcap->card)); snprintf(vcap->bus_info, sizeof(vcap->bus_info), "PCI:%s", pci_name(cx->pci_dev)); vcap->version = CX18_DRIVER_VERSION; /* version */ vcap->capabilities = cx->v4l2_cap; /* capabilities */ return 0; } static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin) { struct cx18 *cx = fh2id(fh)->cx; return cx18_get_audio_input(cx, vin->index, vin); } static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin) { struct cx18 *cx = fh2id(fh)->cx; vin->index = cx->audio_input; return cx18_get_audio_input(cx, vin->index, vin); } static int cx18_s_audio(struct file *file, void *fh, struct v4l2_audio *vout) { struct cx18 *cx = fh2id(fh)->cx; if (vout->index >= cx->nof_audio_inputs) return -EINVAL; cx->audio_input = vout->index; cx18_audio_set_io(cx); return 0; } static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin) { struct cx18 *cx = fh2id(fh)->cx; /* set it to defaults from our table */ return cx18_get_input(cx, vin->index, vin); } static int cx18_cropcap(struct file *file, void *fh, struct v4l2_cropcap *cropcap) { struct cx18 *cx = fh2id(fh)->cx; if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; cropcap->bounds.top = cropcap->bounds.left = 0; cropcap->bounds.width = 720; cropcap->bounds.height = cx->is_50hz ? 576 : 480; cropcap->pixelaspect.numerator = cx->is_50hz ? 59 : 10; cropcap->pixelaspect.denominator = cx->is_50hz ? 54 : 11; cropcap->defrect = cropcap->bounds; return 0; } static int cx18_s_crop(struct file *file, void *fh, struct v4l2_crop *crop) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int ret; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; CX18_DEBUG_WARN("VIDIOC_S_CROP not implemented\n"); return -EINVAL; } static int cx18_g_crop(struct file *file, void *fh, struct v4l2_crop *crop) { struct cx18 *cx = fh2id(fh)->cx; if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; CX18_DEBUG_WARN("VIDIOC_G_CROP not implemented\n"); return -EINVAL; } static int cx18_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt) { static struct v4l2_fmtdesc formats[] = { { 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0, "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 } }, { 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED, "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 } } }; if (fmt->index > 1) return -EINVAL; *fmt = formats[fmt->index]; return 0; } static int cx18_g_input(struct file *file, void *fh, unsigned int *i) { struct cx18 *cx = fh2id(fh)->cx; *i = cx->active_input; return 0; } int cx18_s_input(struct file *file, void *fh, unsigned int inp) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int ret; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; if (inp >= cx->nof_inputs) return -EINVAL; if (inp == cx->active_input) { CX18_DEBUG_INFO("Input unchanged\n"); return 0; } CX18_DEBUG_INFO("Changing input from %d to %d\n", cx->active_input, inp); cx->active_input = inp; /* Set the audio input to whatever is appropriate for the input type. */ cx->audio_input = cx->card->video_inputs[inp].audio_index; /* prevent others from messing with the streams until we're finished changing inputs. */ cx18_mute(cx); cx18_video_set_io(cx); cx18_audio_set_io(cx); cx18_unmute(cx); return 0; } static int cx18_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf) { struct cx18 *cx = fh2id(fh)->cx; if (vf->tuner != 0) return -EINVAL; cx18_call_all(cx, tuner, g_frequency, vf); return 0; } int cx18_s_frequency(struct file *file, void *fh, struct v4l2_frequency *vf) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int ret; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; if (vf->tuner != 0) return -EINVAL; cx18_mute(cx); CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency); cx18_call_all(cx, tuner, s_frequency, vf); cx18_unmute(cx); return 0; } static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std) { struct cx18 *cx = fh2id(fh)->cx; *std = cx->std; return 0; } int cx18_s_std(struct file *file, void *fh, v4l2_std_id *std) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int ret; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; if ((*std & V4L2_STD_ALL) == 0) return -EINVAL; if (*std == cx->std) return 0; if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) || atomic_read(&cx->ana_capturing) > 0) { /* Switching standard would turn off the radio or mess with already running streams, prevent that by returning EBUSY. */ return -EBUSY; } cx->std = *std; cx->is_60hz = (*std & V4L2_STD_525_60) ? 1 : 0; cx->is_50hz = !cx->is_60hz; cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz); cx->cxhdl.width = 720; cx->cxhdl.height = cx->is_50hz ? 576 : 480; cx->vbi.count = cx->is_50hz ? 18 : 12; cx->vbi.start[0] = cx->is_50hz ? 6 : 10; cx->vbi.start[1] = cx->is_50hz ? 318 : 273; CX18_DEBUG_INFO("Switching standard to %llx.\n", (unsigned long long) cx->std); /* Tuner */ cx18_call_all(cx, core, s_std, cx->std); return 0; } static int cx18_s_tuner(struct file *file, void *fh, struct v4l2_tuner *vt) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; int ret; ret = v4l2_prio_check(&cx->prio, id->prio); if (ret) return ret; if (vt->index != 0) return -EINVAL; cx18_call_all(cx, tuner, s_tuner, vt); return 0; } static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt) { struct cx18 *cx = fh2id(fh)->cx; if (vt->index != 0) return -EINVAL; cx18_call_all(cx, tuner, g_tuner, vt); if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) { strlcpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name)); vt->type = V4L2_TUNER_RADIO; } else { strlcpy(vt->name, "cx18 TV Tuner", sizeof(vt->name)); vt->type = V4L2_TUNER_ANALOG_TV; } return 0; } static int cx18_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap) { struct cx18 *cx = fh2id(fh)->cx; int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525; int f, l; if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) return -EINVAL; cap->service_set = 0; for (f = 0; f < 2; f++) { for (l = 0; l < 24; l++) { if (valid_service_line(f, l, cx->is_50hz)) { /* * We can find all v4l2 supported vbi services * for the standard, on a valid line for the std */ cap->service_lines[f][l] = set; cap->service_set |= set; } else cap->service_lines[f][l] = 0; } } for (f = 0; f < 3; f++) cap->reserved[f] = 0; return 0; } static int _cx18_process_idx_data(struct cx18_buffer *buf, struct v4l2_enc_idx *idx) { int consumed, remaining; struct v4l2_enc_idx_entry *e_idx; struct cx18_enc_idx_entry *e_buf; /* Frame type lookup: 1=I, 2=P, 4=B */ const int mapping[8] = { -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P, -1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1 }; /* * Assumption here is that a buf holds an integral number of * struct cx18_enc_idx_entry objects and is properly aligned. * This is enforced by the module options on IDX buffer sizes. */ remaining = buf->bytesused - buf->readpos; consumed = 0; e_idx = &idx->entry[idx->entries]; e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos]; while (remaining >= sizeof(struct cx18_enc_idx_entry) && idx->entries < V4L2_ENC_IDX_ENTRIES) { e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32) | le32_to_cpu(e_buf->offset_low); e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32) | le32_to_cpu(e_buf->pts_low); e_idx->length = le32_to_cpu(e_buf->length); e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7]; e_idx->reserved[0] = 0; e_idx->reserved[1] = 0; idx->entries++; e_idx = &idx->entry[idx->entries]; e_buf++; remaining -= sizeof(struct cx18_enc_idx_entry); consumed += sizeof(struct cx18_enc_idx_entry); } /* Swallow any partial entries at the end, if there are any */ if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry)) consumed += remaining; buf->readpos += consumed; return consumed; } static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl, struct v4l2_enc_idx *idx) { if (s->type != CX18_ENC_STREAM_TYPE_IDX) return -EINVAL; if (mdl->curr_buf == NULL) mdl->curr_buf = list_first_entry(&mdl->buf_list, struct cx18_buffer, list); if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) { /* * For some reason we've exhausted the buffers, but the MDL * object still said some data was unread. * Fix that and bail out. */ mdl->readpos = mdl->bytesused; return 0; } list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) { /* Skip any empty buffers in the MDL */ if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused) continue; mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx); /* exit when MDL drained or request satisfied */ if (idx->entries >= V4L2_ENC_IDX_ENTRIES || mdl->curr_buf->readpos < mdl->curr_buf->bytesused || mdl->readpos >= mdl->bytesused) break; } return 0; } static int cx18_g_enc_index(struct file *file, void *fh, struct v4l2_enc_idx *idx) { struct cx18 *cx = fh2id(fh)->cx; struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; s32 tmp; struct cx18_mdl *mdl; if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */ return -EINVAL; /* Compute the best case number of entries we can buffer */ tmp = s->buffers - s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN; if (tmp <= 0) tmp = 1; tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry); /* Fill out the header of the return structure */ idx->entries = 0; idx->entries_cap = tmp; memset(idx->reserved, 0, sizeof(idx->reserved)); /* Pull IDX MDLs and buffers from q_full and populate the entries */ do { mdl = cx18_dequeue(s, &s->q_full); if (mdl == NULL) /* No more IDX data right now */ break; /* Extract the Index entry data from the MDL and buffers */ cx18_process_idx_data(s, mdl, idx); if (mdl->readpos < mdl->bytesused) { /* We finished with data remaining, push the MDL back */ cx18_push(s, mdl, &s->q_full); break; } /* We drained this MDL, schedule it to go to the firmware */ cx18_enqueue(s, mdl, &s->q_free); } while (idx->entries < V4L2_ENC_IDX_ENTRIES); /* Tell the work handler to send free IDX MDLs to the firmware */ cx18_stream_load_fw_queue(s); return 0; } static int cx18_encoder_cmd(struct file *file, void *fh, struct v4l2_encoder_cmd *enc) { struct cx18_open_id *id = fh2id(fh); struct cx18 *cx = id->cx; u32 h; switch (enc->cmd) { case V4L2_ENC_CMD_START: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n"); enc->flags = 0; return cx18_start_capture(id); case V4L2_ENC_CMD_STOP: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n"); enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END; cx18_stop_capture(id, enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END); break; case V4L2_ENC_CMD_PAUSE: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n"); enc->flags = 0; if (!atomic_read(&cx->ana_capturing)) return -EPERM; if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags)) return 0; h = cx18_find_handle(cx); if (h == CX18_INVALID_TASK_HANDLE) { CX18_ERR("Can't find valid task handle for " "V4L2_ENC_CMD_PAUSE\n"); return -EBADFD; } cx18_mute(cx); cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h); break; case V4L2_ENC_CMD_RESUME: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n"); enc->flags = 0; if (!atomic_read(&cx->ana_capturing)) return -EPERM; if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags)) return 0; h = cx18_find_handle(cx); if (h == CX18_INVALID_TASK_HANDLE) { CX18_ERR("Can't find valid task handle for " "V4L2_ENC_CMD_RESUME\n"); return -EBADFD; } cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h); cx18_unmute(cx); break; default: CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd); return -EINVAL; } return 0; } static int cx18_try_encoder_cmd(struct file *file, void *fh, struct v4l2_encoder_cmd *enc) { struct cx18 *cx = fh2id(fh)->cx; switch (enc->cmd) { case V4L2_ENC_CMD_START: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n"); enc->flags = 0; break; case V4L2_ENC_CMD_STOP: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n"); enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END; break; case V4L2_ENC_CMD_PAUSE: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n"); enc->flags = 0; break; case V4L2_ENC_CMD_RESUME: CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n"); enc->flags = 0; break; default: CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd); return -EINVAL; } return 0; } static int cx18_log_status(struct file *file, void *fh) { struct cx18 *cx = fh2id(fh)->cx; struct v4l2_input vidin; struct v4l2_audio audin; int i; CX18_INFO("================= START STATUS CARD #%d " "=================\n", cx->instance); CX18_INFO("Version: %s Card: %s\n", CX18_VERSION, cx->card_name); if (cx->hw_flags & CX18_HW_TVEEPROM) { struct tveeprom tv; cx18_read_eeprom(cx, &tv); } cx18_call_all(cx, core, log_status); cx18_get_input(cx, cx->active_input, &vidin); cx18_get_audio_input(cx, cx->audio_input, &audin); CX18_INFO("Video Input: %s\n", vidin.name); CX18_INFO("Audio Input: %s\n", audin.name); mutex_lock(&cx->gpio_lock); CX18_INFO("GPIO: direction 0x%08x, value 0x%08x\n", cx->gpio_dir, cx->gpio_val); mutex_unlock(&cx->gpio_lock); CX18_INFO("Tuner: %s\n", test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ? "Radio" : "TV"); v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name); CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags); for (i = 0; i < CX18_MAX_STREAMS; i++) { struct cx18_stream *s = &cx->streams[i]; if (s->video_dev == NULL || s->buffers == 0) continue; CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n", s->name, s->s_flags, atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100 / s->buffers, (s->buffers * s->buf_size) / 1024, s->buffers); } CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n", (long long)cx->mpg_data_received, (long long)cx->vbi_data_inserted); CX18_INFO("================== END STATUS CARD #%d " "==================\n", cx->instance); return 0; } static long cx18_default(struct file *file, void *fh, bool valid_prio, int cmd, void *arg) { struct cx18 *cx = fh2id(fh)->cx; switch (cmd) { case VIDIOC_INT_RESET: { u32 val = *(u32 *)arg; if ((val == 0) || (val & 0x01)) cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset, (u32) CX18_GPIO_RESET_Z8F0811); break; } default: return -EINVAL; } return 0; } long cx18_v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct video_device *vfd = video_devdata(filp); struct cx18_open_id *id = file2id(filp); struct cx18 *cx = id->cx; long res; mutex_lock(&cx->serialize_lock); /* FIXME - consolidate v4l2_prio_check()'s here */ if (cx18_debug & CX18_DBGFLG_IOCTL) vfd->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG; res = video_ioctl2(filp, cmd, arg); vfd->debug = 0; mutex_unlock(&cx->serialize_lock); return res; } static const struct v4l2_ioctl_ops cx18_ioctl_ops = { .vidioc_querycap = cx18_querycap, .vidioc_g_priority = cx18_g_priority, .vidioc_s_priority = cx18_s_priority, .vidioc_s_audio = cx18_s_audio, .vidioc_g_audio = cx18_g_audio, .vidioc_enumaudio = cx18_enumaudio, .vidioc_enum_input = cx18_enum_input, .vidioc_cropcap = cx18_cropcap, .vidioc_s_crop = cx18_s_crop, .vidioc_g_crop = cx18_g_crop, .vidioc_g_input = cx18_g_input, .vidioc_s_input = cx18_s_input, .vidioc_g_frequency = cx18_g_frequency, .vidioc_s_frequency = cx18_s_frequency, .vidioc_s_tuner = cx18_s_tuner, .vidioc_g_tuner = cx18_g_tuner, .vidioc_g_enc_index = cx18_g_enc_index, .vidioc_g_std = cx18_g_std, .vidioc_s_std = cx18_s_std, .vidioc_log_status = cx18_log_status, .vidioc_enum_fmt_vid_cap = cx18_enum_fmt_vid_cap, .vidioc_encoder_cmd = cx18_encoder_cmd, .vidioc_try_encoder_cmd = cx18_try_encoder_cmd, .vidioc_g_fmt_vid_cap = cx18_g_fmt_vid_cap, .vidioc_g_fmt_vbi_cap = cx18_g_fmt_vbi_cap, .vidioc_g_fmt_sliced_vbi_cap = cx18_g_fmt_sliced_vbi_cap, .vidioc_s_fmt_vid_cap = cx18_s_fmt_vid_cap, .vidioc_s_fmt_vbi_cap = cx18_s_fmt_vbi_cap, .vidioc_s_fmt_sliced_vbi_cap = cx18_s_fmt_sliced_vbi_cap, .vidioc_try_fmt_vid_cap = cx18_try_fmt_vid_cap, .vidioc_try_fmt_vbi_cap = cx18_try_fmt_vbi_cap, .vidioc_try_fmt_sliced_vbi_cap = cx18_try_fmt_sliced_vbi_cap, .vidioc_g_sliced_vbi_cap = cx18_g_sliced_vbi_cap, .vidioc_g_chip_ident = cx18_g_chip_ident, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = cx18_g_register, .vidioc_s_register = cx18_s_register, #endif .vidioc_default = cx18_default, }; void cx18_set_funcs(struct video_device *vdev) { vdev->ioctl_ops = &cx18_ioctl_ops; }