/* cx231xx-video.c - driver for Conexant Cx23100/101/102 USB video capture devices Copyright (C) 2008 Based on em28xx driver Based on cx23885 driver Based on cx88 driver 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dvb_frontend.h" #include "cx231xx.h" #include "cx231xx-vbi.h" #define CX231XX_VERSION_CODE KERNEL_VERSION(0, 0, 1) #define DRIVER_AUTHOR "Srinivasa Deevi " #define DRIVER_DESC "Conexant cx231xx based USB video device driver" #define cx231xx_videodbg(fmt, arg...) do {\ if (video_debug) \ printk(KERN_INFO "%s %s :"fmt, \ dev->name, __func__ , ##arg); } while (0) static unsigned int isoc_debug; module_param(isoc_debug, int, 0644); MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); #define cx231xx_isocdbg(fmt, arg...) \ do {\ if (isoc_debug) { \ printk(KERN_INFO "%s %s :"fmt, \ dev->name, __func__ , ##arg); \ } \ } while (0) MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; module_param_array(card, int, NULL, 0444); module_param_array(video_nr, int, NULL, 0444); module_param_array(vbi_nr, int, NULL, 0444); module_param_array(radio_nr, int, NULL, 0444); MODULE_PARM_DESC(card, "card type"); MODULE_PARM_DESC(video_nr, "video device numbers"); MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); MODULE_PARM_DESC(radio_nr, "radio device numbers"); static unsigned int video_debug; module_param(video_debug, int, 0644); MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); /* supported video standards */ static struct cx231xx_fmt format[] = { { .name = "16bpp YUY2, 4:2:2, packed", .fourcc = V4L2_PIX_FMT_YUYV, .depth = 16, .reg = 0, }, }; /* supported controls */ /* Common to all boards */ /* ------------------------------------------------------------------- */ static const struct v4l2_queryctrl no_ctl = { .name = "42", .flags = V4L2_CTRL_FLAG_DISABLED, }; static struct cx231xx_ctrl cx231xx_ctls[] = { /* --- video --- */ { .v = { .id = V4L2_CID_BRIGHTNESS, .name = "Brightness", .minimum = 0x00, .maximum = 0xff, .step = 1, .default_value = 0x7f, .type = V4L2_CTRL_TYPE_INTEGER, }, .off = 128, .reg = LUMA_CTRL, .mask = 0x00ff, .shift = 0, }, { .v = { .id = V4L2_CID_CONTRAST, .name = "Contrast", .minimum = 0, .maximum = 0xff, .step = 1, .default_value = 0x3f, .type = V4L2_CTRL_TYPE_INTEGER, }, .off = 0, .reg = LUMA_CTRL, .mask = 0xff00, .shift = 8, }, { .v = { .id = V4L2_CID_HUE, .name = "Hue", .minimum = 0, .maximum = 0xff, .step = 1, .default_value = 0x7f, .type = V4L2_CTRL_TYPE_INTEGER, }, .off = 128, .reg = CHROMA_CTRL, .mask = 0xff0000, .shift = 16, }, { /* strictly, this only describes only U saturation. * V saturation is handled specially through code. */ .v = { .id = V4L2_CID_SATURATION, .name = "Saturation", .minimum = 0, .maximum = 0xff, .step = 1, .default_value = 0x7f, .type = V4L2_CTRL_TYPE_INTEGER, }, .off = 0, .reg = CHROMA_CTRL, .mask = 0x00ff, .shift = 0, }, { /* --- audio --- */ .v = { .id = V4L2_CID_AUDIO_MUTE, .name = "Mute", .minimum = 0, .maximum = 1, .default_value = 1, .type = V4L2_CTRL_TYPE_BOOLEAN, }, .reg = PATH1_CTL1, .mask = (0x1f << 24), .shift = 24, }, { .v = { .id = V4L2_CID_AUDIO_VOLUME, .name = "Volume", .minimum = 0, .maximum = 0x3f, .step = 1, .default_value = 0x3f, .type = V4L2_CTRL_TYPE_INTEGER, }, .reg = PATH1_VOL_CTL, .mask = 0xff, .shift = 0, } }; static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls); static const u32 cx231xx_user_ctrls[] = { V4L2_CID_USER_CLASS, V4L2_CID_BRIGHTNESS, V4L2_CID_CONTRAST, V4L2_CID_SATURATION, V4L2_CID_HUE, V4L2_CID_AUDIO_VOLUME, #if 0 V4L2_CID_AUDIO_BALANCE, #endif V4L2_CID_AUDIO_MUTE, 0 }; static const u32 *ctrl_classes[] = { cx231xx_user_ctrls, NULL }; /* ------------------------------------------------------------------ Video buffer and parser functions ------------------------------------------------------------------*/ /* * Announces that a buffer were filled and request the next */ static inline void buffer_filled(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, struct cx231xx_buffer *buf) { /* Advice that buffer was filled */ cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); buf->vb.state = VIDEOBUF_DONE; buf->vb.field_count++; do_gettimeofday(&buf->vb.ts); dev->video_mode.isoc_ctl.buf = NULL; list_del(&buf->vb.queue); wake_up(&buf->vb.done); } static inline void print_err_status(struct cx231xx *dev, int packet, int status) { char *errmsg = "Unknown"; switch (status) { case -ENOENT: errmsg = "unlinked synchronuously"; break; case -ECONNRESET: errmsg = "unlinked asynchronuously"; break; case -ENOSR: errmsg = "Buffer error (overrun)"; break; case -EPIPE: errmsg = "Stalled (device not responding)"; break; case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break; case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break; case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break; case -ETIME: errmsg = "Device does not respond"; break; } if (packet < 0) { cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg); } else { cx231xx_isocdbg("URB packet %d, status %d [%s].\n", packet, status, errmsg); } } /* * video-buf generic routine to get the next available buffer */ static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q, struct cx231xx_buffer **buf) { struct cx231xx_video_mode *vmode = container_of(dma_q, struct cx231xx_video_mode, vidq); struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode); char *outp; if (list_empty(&dma_q->active)) { cx231xx_isocdbg("No active queue to serve\n"); dev->video_mode.isoc_ctl.buf = NULL; *buf = NULL; return; } /* Get the next buffer */ *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue); /* Cleans up buffer - Usefull for testing for frame/URB loss */ outp = videobuf_to_vmalloc(&(*buf)->vb); memset(outp, 0, (*buf)->vb.size); dev->video_mode.isoc_ctl.buf = *buf; return; } /* * Controls the isoc copy of each urb packet */ static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb) { struct cx231xx_buffer *buf; struct cx231xx_dmaqueue *dma_q = urb->context; unsigned char *outp = NULL; int i, rc = 1; unsigned char *p_buffer; u32 bytes_parsed = 0, buffer_size = 0; u8 sav_eav = 0; if (!dev) return 0; if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED)) return 0; if (urb->status < 0) { print_err_status(dev, -1, urb->status); if (urb->status == -ENOENT) return 0; } buf = dev->video_mode.isoc_ctl.buf; if (buf != NULL) outp = videobuf_to_vmalloc(&buf->vb); for (i = 0; i < urb->number_of_packets; i++) { int status = urb->iso_frame_desc[i].status; if (status < 0) { print_err_status(dev, i, status); if (urb->iso_frame_desc[i].status != -EPROTO) continue; } if (urb->iso_frame_desc[i].actual_length <= 0) { /* cx231xx_isocdbg("packet %d is empty",i); - spammy */ continue; } if (urb->iso_frame_desc[i].actual_length > dev->video_mode.max_pkt_size) { cx231xx_isocdbg("packet bigger than packet size"); continue; } /* get buffer pointer and length */ p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset; buffer_size = urb->iso_frame_desc[i].actual_length; bytes_parsed = 0; if (dma_q->is_partial_line) { /* Handle the case of a partial line */ sav_eav = dma_q->last_sav; } else { /* Check for a SAV/EAV overlapping the buffer boundary */ sav_eav = cx231xx_find_boundary_SAV_EAV(p_buffer, dma_q->partial_buf, &bytes_parsed); } sav_eav &= 0xF0; /* Get the first line if we have some portion of an SAV/EAV from the last buffer or a partial line */ if (sav_eav) { bytes_parsed += cx231xx_get_video_line(dev, dma_q, sav_eav, /* SAV/EAV */ p_buffer + bytes_parsed, /* p_buffer */ buffer_size - bytes_parsed);/* buf size */ } /* Now parse data that is completely in this buffer */ /* dma_q->is_partial_line = 0; */ while (bytes_parsed < buffer_size) { u32 bytes_used = 0; sav_eav = cx231xx_find_next_SAV_EAV( p_buffer + bytes_parsed, /* p_buffer */ buffer_size - bytes_parsed, /* buf size */ &bytes_used);/* bytes used to get SAV/EAV */ bytes_parsed += bytes_used; sav_eav &= 0xF0; if (sav_eav && (bytes_parsed < buffer_size)) { bytes_parsed += cx231xx_get_video_line(dev, dma_q, sav_eav, /* SAV/EAV */ p_buffer + bytes_parsed,/* p_buffer */ buffer_size - bytes_parsed);/*buf size*/ } } /* Save the last four bytes of the buffer so we can check the buffer boundary condition next time */ memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4); bytes_parsed = 0; } return rc; } u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf, u32 *p_bytes_used) { u32 bytes_used; u8 boundary_bytes[8]; u8 sav_eav = 0; *p_bytes_used = 0; /* Create an array of the last 4 bytes of the last buffer and the first 4 bytes of the current buffer. */ memcpy(boundary_bytes, partial_buf, 4); memcpy(boundary_bytes + 4, p_buffer, 4); /* Check for the SAV/EAV in the boundary buffer */ sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8, &bytes_used); if (sav_eav) { /* found a boundary SAV/EAV. Updates the bytes used to reflect only those used in the new buffer */ *p_bytes_used = bytes_used - 4; } return sav_eav; } u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used) { u32 i; u8 sav_eav = 0; /* * Don't search if the buffer size is less than 4. It causes a page * fault since buffer_size - 4 evaluates to a large number in that * case. */ if (buffer_size < 4) { *p_bytes_used = buffer_size; return 0; } for (i = 0; i < (buffer_size - 3); i++) { if ((p_buffer[i] == 0xFF) && (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) { *p_bytes_used = i + 4; sav_eav = p_buffer[i + 3]; return sav_eav; } } *p_bytes_used = buffer_size; return 0; } u32 cx231xx_get_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, u8 sav_eav, u8 *p_buffer, u32 buffer_size) { u32 bytes_copied = 0; int current_field = -1; switch (sav_eav) { case SAV_ACTIVE_VIDEO_FIELD1: /* looking for skipped line which occurred in PAL 720x480 mode. In this case, there will be no active data contained between the SAV and EAV */ if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || (p_buffer[3] == EAV_VBLANK_FIELD1) || (p_buffer[3] == EAV_VBLANK_FIELD2))) return bytes_copied; current_field = 1; break; case SAV_ACTIVE_VIDEO_FIELD2: /* looking for skipped line which occurred in PAL 720x480 mode. In this case, there will be no active data contained between the SAV and EAV */ if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || (p_buffer[3] == EAV_VBLANK_FIELD1) || (p_buffer[3] == EAV_VBLANK_FIELD2))) return bytes_copied; current_field = 2; break; } dma_q->last_sav = sav_eav; bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer, buffer_size, current_field); return bytes_copied; } u32 cx231xx_copy_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, u8 *p_line, u32 length, int field_number) { u32 bytes_to_copy; struct cx231xx_buffer *buf; u32 _line_size = dev->width * 2; if (dma_q->current_field != field_number) cx231xx_reset_video_buffer(dev, dma_q); /* get the buffer pointer */ buf = dev->video_mode.isoc_ctl.buf; /* Remember the field number for next time */ dma_q->current_field = field_number; bytes_to_copy = dma_q->bytes_left_in_line; if (bytes_to_copy > length) bytes_to_copy = length; if (dma_q->lines_completed >= dma_q->lines_per_field) { dma_q->bytes_left_in_line -= bytes_to_copy; dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ? 0 : 1; return 0; } dma_q->is_partial_line = 1; /* If we don't have a buffer, just return the number of bytes we would have copied if we had a buffer. */ if (!buf) { dma_q->bytes_left_in_line -= bytes_to_copy; dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ? 0 : 1; return bytes_to_copy; } /* copy the data to video buffer */ cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy); dma_q->pos += bytes_to_copy; dma_q->bytes_left_in_line -= bytes_to_copy; if (dma_q->bytes_left_in_line == 0) { dma_q->bytes_left_in_line = _line_size; dma_q->lines_completed++; dma_q->is_partial_line = 0; if (cx231xx_is_buffer_done(dev, dma_q) && buf) { buffer_filled(dev, dma_q, buf); dma_q->pos = 0; buf = NULL; dma_q->lines_completed = 0; } } return bytes_to_copy; } void cx231xx_reset_video_buffer(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q) { struct cx231xx_buffer *buf; /* handle the switch from field 1 to field 2 */ if (dma_q->current_field == 1) { if (dma_q->lines_completed >= dma_q->lines_per_field) dma_q->field1_done = 1; else dma_q->field1_done = 0; } buf = dev->video_mode.isoc_ctl.buf; if (buf == NULL) { u8 *outp = NULL; /* first try to get the buffer */ get_next_buf(dma_q, &buf); if (buf) outp = videobuf_to_vmalloc(&buf->vb); dma_q->pos = 0; dma_q->field1_done = 0; dma_q->current_field = -1; } /* reset the counters */ dma_q->bytes_left_in_line = dev->width << 1; dma_q->lines_completed = 0; } int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, u8 *p_buffer, u32 bytes_to_copy) { u8 *p_out_buffer = NULL; u32 current_line_bytes_copied = 0; struct cx231xx_buffer *buf; u32 _line_size = dev->width << 1; void *startwrite; int offset, lencopy; buf = dev->video_mode.isoc_ctl.buf; if (buf == NULL) return -1; p_out_buffer = videobuf_to_vmalloc(&buf->vb); current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line; /* Offset field 2 one line from the top of the buffer */ offset = (dma_q->current_field == 1) ? 0 : _line_size; /* Offset for field 2 */ startwrite = p_out_buffer + offset; /* lines already completed in the current field */ startwrite += (dma_q->lines_completed * _line_size * 2); /* bytes already completed in the current line */ startwrite += current_line_bytes_copied; lencopy = dma_q->bytes_left_in_line > bytes_to_copy ? bytes_to_copy : dma_q->bytes_left_in_line; if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size)) return 0; /* The below copies the UYVY data straight into video buffer */ cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy); return 0; } void cx231xx_swab(u16 *from, u16 *to, u16 len) { u16 i; if (len <= 0) return; for (i = 0; i < len / 2; i++) to[i] = (from[i] << 8) | (from[i] >> 8); } u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q) { u8 buffer_complete = 0; /* Dual field stream */ buffer_complete = ((dma_q->current_field == 2) && (dma_q->lines_completed >= dma_q->lines_per_field) && dma_q->field1_done); return buffer_complete; } /* ------------------------------------------------------------------ Videobuf operations ------------------------------------------------------------------*/ static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) { struct cx231xx_fh *fh = vq->priv_data; struct cx231xx *dev = fh->dev; struct v4l2_frequency f; *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3; if (0 == *count) *count = CX231XX_DEF_BUF; if (*count < CX231XX_MIN_BUF) *count = CX231XX_MIN_BUF; /* Ask tuner to go to analog mode */ memset(&f, 0, sizeof(f)); f.frequency = dev->ctl_freq; f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_FREQUENCY, &f); return 0; } /* This is called *without* dev->slock held; please keep it that way */ static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf) { struct cx231xx_fh *fh = vq->priv_data; struct cx231xx *dev = fh->dev; unsigned long flags = 0; if (in_interrupt()) BUG(); /* We used to wait for the buffer to finish here, but this didn't work because, as we were keeping the state as VIDEOBUF_QUEUED, videobuf_queue_cancel marked it as finished for us. (Also, it could wedge forever if the hardware was misconfigured.) This should be safe; by the time we get here, the buffer isn't queued anymore. If we ever start marking the buffers as VIDEOBUF_ACTIVE, it won't be, though. */ spin_lock_irqsave(&dev->video_mode.slock, flags); if (dev->video_mode.isoc_ctl.buf == buf) dev->video_mode.isoc_ctl.buf = NULL; spin_unlock_irqrestore(&dev->video_mode.slock, flags); videobuf_vmalloc_free(&buf->vb); buf->vb.state = VIDEOBUF_NEEDS_INIT; } static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, enum v4l2_field field) { struct cx231xx_fh *fh = vq->priv_data; struct cx231xx_buffer *buf = container_of(vb, struct cx231xx_buffer, vb); struct cx231xx *dev = fh->dev; int rc = 0, urb_init = 0; /* The only currently supported format is 16 bits/pixel */ buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3; if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) return -EINVAL; buf->vb.width = dev->width; buf->vb.height = dev->height; buf->vb.field = field; if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { rc = videobuf_iolock(vq, &buf->vb, NULL); if (rc < 0) goto fail; } if (!dev->video_mode.isoc_ctl.num_bufs) urb_init = 1; if (urb_init) { rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS, CX231XX_NUM_BUFS, dev->video_mode.max_pkt_size, cx231xx_isoc_copy); if (rc < 0) goto fail; } buf->vb.state = VIDEOBUF_PREPARED; return 0; fail: free_buffer(vq, buf); return rc; } static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct cx231xx_buffer *buf = container_of(vb, struct cx231xx_buffer, vb); struct cx231xx_fh *fh = vq->priv_data; struct cx231xx *dev = fh->dev; struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq; buf->vb.state = VIDEOBUF_QUEUED; list_add_tail(&buf->vb.queue, &vidq->active); } static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct cx231xx_buffer *buf = container_of(vb, struct cx231xx_buffer, vb); struct cx231xx_fh *fh = vq->priv_data; struct cx231xx *dev = (struct cx231xx *)fh->dev; cx231xx_isocdbg("cx231xx: called buffer_release\n"); free_buffer(vq, buf); } static struct videobuf_queue_ops cx231xx_video_qops = { .buf_setup = buffer_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .buf_release = buffer_release, }; /********************* v4l2 interface **************************************/ void video_mux(struct cx231xx *dev, int index) { struct v4l2_routing route; route.input = INPUT(index)->vmux; route.output = 0; dev->video_input = index; dev->ctl_ainput = INPUT(index)->amux; cx231xx_set_video_input_mux(dev, index); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_INT_S_VIDEO_ROUTING, &route); cx231xx_set_audio_input(dev, dev->ctl_ainput); cx231xx_info("video_mux : %d\n", index); /* do mode control overrides if required */ cx231xx_do_mode_ctrl_overrides(dev); } /* Usage lock check functions */ static int res_get(struct cx231xx_fh *fh) { struct cx231xx *dev = fh->dev; int rc = 0; /* This instance already has stream_on */ if (fh->stream_on) return rc; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { if (dev->stream_on) return -EBUSY; dev->stream_on = 1; } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { if (dev->vbi_stream_on) return -EBUSY; dev->vbi_stream_on = 1; } else return -EINVAL; fh->stream_on = 1; return rc; } static int res_check(struct cx231xx_fh *fh) { return fh->stream_on; } static void res_free(struct cx231xx_fh *fh) { struct cx231xx *dev = fh->dev; fh->stream_on = 0; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) dev->stream_on = 0; if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) dev->vbi_stream_on = 0; } static int check_dev(struct cx231xx *dev) { if (dev->state & DEV_DISCONNECTED) { cx231xx_errdev("v4l2 ioctl: device not present\n"); return -ENODEV; } if (dev->state & DEV_MISCONFIGURED) { cx231xx_errdev("v4l2 ioctl: device is misconfigured; " "close and open it again\n"); return -EIO; } return 0; } void get_scale(struct cx231xx *dev, unsigned int width, unsigned int height, unsigned int *hscale, unsigned int *vscale) { unsigned int maxw = norm_maxw(dev); unsigned int maxh = norm_maxh(dev); *hscale = (((unsigned long)maxw) << 12) / width - 4096L; if (*hscale >= 0x4000) *hscale = 0x3fff; *vscale = (((unsigned long)maxh) << 12) / height - 4096L; if (*vscale >= 0x4000) *vscale = 0x3fff; dev->hscale = *hscale; dev->vscale = *vscale; } /* ------------------------------------------------------------------ IOCTL vidioc handling ------------------------------------------------------------------*/ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; mutex_lock(&dev->lock); f->fmt.pix.width = dev->width; f->fmt.pix.height = dev->height; f->fmt.pix.pixelformat = dev->format->fourcc;; f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;; f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; f->fmt.pix.field = V4L2_FIELD_INTERLACED; mutex_unlock(&dev->lock); return 0; } static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc) { unsigned int i; for (i = 0; i < ARRAY_SIZE(format); i++) if (format[i].fourcc == fourcc) return &format[i]; return NULL; } static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int width = f->fmt.pix.width; int height = f->fmt.pix.height; unsigned int maxw = norm_maxw(dev); unsigned int maxh = norm_maxh(dev); unsigned int hscale, vscale; struct cx231xx_fmt *fmt; fmt = format_by_fourcc(f->fmt.pix.pixelformat); if (!fmt) { cx231xx_videodbg("Fourcc format (%08x) invalid.\n", f->fmt.pix.pixelformat); return -EINVAL; } /* width must even because of the YUYV format height must be even because of interlacing */ height &= 0xfffe; width &= 0xfffe; if (unlikely(height < 32)) height = 32; if (unlikely(height > maxh)) height = maxh; if (unlikely(width < 48)) width = 48; if (unlikely(width > maxw)) width = maxw; get_scale(dev, width, height, &hscale, &vscale); width = (((unsigned long)maxw) << 12) / (hscale + 4096L); height = (((unsigned long)maxh) << 12) / (vscale + 4096L); f->fmt.pix.width = width; f->fmt.pix.height = height; f->fmt.pix.pixelformat = fmt->fourcc; f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3; f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; f->fmt.pix.field = V4L2_FIELD_INTERLACED; return 0; } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; struct cx231xx_fmt *fmt; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); vidioc_try_fmt_vid_cap(file, priv, f); fmt = format_by_fourcc(f->fmt.pix.pixelformat); if (!fmt) { rc = -EINVAL; goto out; } if (videobuf_queue_is_busy(&fh->vb_vidq)) { cx231xx_errdev("%s queue busy\n", __func__); rc = -EBUSY; goto out; } if (dev->stream_on && !fh->stream_on) { cx231xx_errdev("%s device in use by another fh\n", __func__); rc = -EBUSY; goto out; } /* set new image size */ dev->width = f->fmt.pix.width; dev->height = f->fmt.pix.height; dev->format = fmt; get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_FMT, f); /* Set the correct alternate setting for this resolution */ cx231xx_resolution_set(dev); out: mutex_unlock(&dev->lock); return rc; } static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; *id = dev->norm; return 0; } static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; struct v4l2_format f; int rc; rc = check_dev(dev); if (rc < 0) return rc; cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm); mutex_lock(&dev->lock); dev->norm = *norm; /* Adjusts width/height, if needed */ f.fmt.pix.width = dev->width; f.fmt.pix.height = dev->height; vidioc_try_fmt_vid_cap(file, priv, &f); /* set new image size */ dev->width = f.fmt.pix.width; dev->height = f.fmt.pix.height; get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_STD, &dev->norm); mutex_unlock(&dev->lock); cx231xx_resolution_set(dev); /* do mode control overrides */ cx231xx_do_mode_ctrl_overrides(dev); return 0; } static const char *iname[] = { [CX231XX_VMUX_COMPOSITE1] = "Composite1", [CX231XX_VMUX_SVIDEO] = "S-Video", [CX231XX_VMUX_TELEVISION] = "Television", [CX231XX_VMUX_CABLE] = "Cable TV", [CX231XX_VMUX_DVB] = "DVB", [CX231XX_VMUX_DEBUG] = "for debug only", }; static int vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; unsigned int n; n = i->index; if (n >= MAX_CX231XX_INPUT) return -EINVAL; if (0 == INPUT(n)->type) return -EINVAL; i->index = n; i->type = V4L2_INPUT_TYPE_CAMERA; strcpy(i->name, iname[INPUT(n)->type]); if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) || (CX231XX_VMUX_CABLE == INPUT(n)->type)) i->type = V4L2_INPUT_TYPE_TUNER; i->std = dev->vdev->tvnorms; return 0; } static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; *i = dev->video_input; return 0; } static int vidioc_s_input(struct file *file, void *priv, unsigned int i) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; if (i >= MAX_CX231XX_INPUT) return -EINVAL; if (0 == INPUT(i)->type) return -EINVAL; mutex_lock(&dev->lock); video_mux(dev, i); mutex_unlock(&dev->lock); return 0; } static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; switch (a->index) { case CX231XX_AMUX_VIDEO: strcpy(a->name, "Television"); break; case CX231XX_AMUX_LINE_IN: strcpy(a->name, "Line In"); break; default: return -EINVAL; } a->index = dev->ctl_ainput; a->capability = V4L2_AUDCAP_STEREO; return 0; } static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int status = 0; /* Doesn't allow manual routing */ if (a->index != dev->ctl_ainput) return -EINVAL; dev->ctl_ainput = INPUT(a->index)->amux; status = cx231xx_set_audio_input(dev, dev->ctl_ainput); return status; } static int vidioc_queryctrl(struct file *file, void *priv, struct v4l2_queryctrl *qc) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int id = qc->id; int i; int rc; rc = check_dev(dev); if (rc < 0) return rc; qc->id = v4l2_ctrl_next(ctrl_classes, qc->id); if (unlikely(qc->id == 0)) return -EINVAL; memset(qc, 0, sizeof(*qc)); qc->id = id; if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1) return -EINVAL; for (i = 0; i < CX231XX_CTLS; i++) if (cx231xx_ctls[i].v.id == qc->id) break; if (i == CX231XX_CTLS) { *qc = no_ctl; return 0; } *qc = cx231xx_ctls[i].v; mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_QUERYCTRL, qc); mutex_unlock(&dev->lock); if (qc->type) return 0; else return -EINVAL; } static int vidioc_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_CTRL, ctrl); mutex_unlock(&dev->lock); return rc; } static int vidioc_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_CTRL, ctrl); mutex_unlock(&dev->lock); return rc; } static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; if (0 != t->index) return -EINVAL; strcpy(t->name, "Tuner"); t->type = V4L2_TUNER_ANALOG_TV; t->capability = V4L2_TUNER_CAP_NORM; t->rangehigh = 0xffffffffUL; t->signal = 0xffff; /* LOCKED */ return 0; } static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; if (0 != t->index) return -EINVAL; #if 0 mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_TUNER, t); mutex_unlock(&dev->lock); #endif return 0; } static int vidioc_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; mutex_lock(&dev->lock); f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; f->frequency = dev->ctl_freq; cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_G_FREQUENCY, f); mutex_unlock(&dev->lock); return 0; } static int vidioc_s_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; if (0 != f->tuner) return -EINVAL; if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV)) return -EINVAL; if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO)) return -EINVAL; /* set pre channel change settings in DIF first */ rc = cx231xx_tuner_pre_channel_change(dev); mutex_lock(&dev->lock); dev->ctl_freq = f->frequency; if (dev->tuner_type == TUNER_XC5000) { if (dev->cx231xx_set_analog_freq != NULL) dev->cx231xx_set_analog_freq(dev, f->frequency); } else { cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_FREQUENCY, f); } mutex_unlock(&dev->lock); /* set post channel change settings in DIF first */ rc = cx231xx_tuner_post_channel_change(dev); cx231xx_info("Set New FREQUENCY to %d\n", f->frequency); return rc; } #ifdef CONFIG_VIDEO_ADV_DEBUG /* -R, --list-registers=type=, chip=[,min=,max=] dump registers from to [VIDIOC_DBG_G_REGISTER] -r, --set-register=type=, chip=,reg=,val= set the register [VIDIOC_DBG_S_REGISTER] if type == host, then is the hosts chip ID (default 0) if type == i2cdrv (default), then is the I2C driver name or ID if type == i2caddr, then is the 7-bit I2C address */ static int vidioc_g_register(struct file *file, void *priv, struct v4l2_dbg_register *reg) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int ret = 0; u8 value[4] = { 0, 0, 0, 0 }; u32 data = 0; switch (reg->match.type) { case V4L2_CHIP_MATCH_HOST: switch (reg->match.addr) { case 0: /* Cx231xx - internal registers */ ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, (u16)reg->reg, value, 4); reg->val = value[0] | value[1] << 8 | value[2] << 16 | value[3] << 24; break; case 1: /* Colibri - read byte */ ret = cx231xx_read_i2c_data(dev, Colibri_DEVICE_ADDRESS, (u16)reg->reg, 2, &data, 1); reg->val = le32_to_cpu(data & 0xff); break; case 14: /* Colibri - read dword */ ret = cx231xx_read_i2c_data(dev, Colibri_DEVICE_ADDRESS, (u16)reg->reg, 2, &data, 4); reg->val = le32_to_cpu(data); break; case 2: /* Hammerhead - read byte */ ret = cx231xx_read_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS, (u16)reg->reg, 2, &data, 1); reg->val = le32_to_cpu(data & 0xff); break; case 24: /* Hammerhead - read dword */ ret = cx231xx_read_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS, (u16)reg->reg, 2, &data, 4); reg->val = le32_to_cpu(data); break; case 3: /* flatiron - read byte */ ret = cx231xx_read_i2c_data(dev, Flatrion_DEVICE_ADDRESS, (u16)reg->reg, 1, &data, 1); reg->val = le32_to_cpu(data & 0xff); break; case 34: /* flatiron - read dword */ ret = cx231xx_read_i2c_data(dev, Flatrion_DEVICE_ADDRESS, (u16)reg->reg, 1, &data, 4); reg->val = le32_to_cpu(data); break; } return ret < 0 ? ret : 0; case V4L2_CHIP_MATCH_I2C_DRIVER: cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_DBG_G_REGISTER, reg); return 0; case V4L2_CHIP_MATCH_I2C_ADDR: /* Not supported yet */ return -EINVAL; default: if (!v4l2_chip_match_host(®->match)) return -EINVAL; } mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_DBG_G_REGISTER, reg); mutex_unlock(&dev->lock); return ret; } static int vidioc_s_register(struct file *file, void *priv, struct v4l2_dbg_register *reg) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int ret = 0; __le64 buf; u32 value; u8 data[4] = { 0, 0, 0, 0 }; buf = cpu_to_le64(reg->val); switch (reg->match.type) { case V4L2_CHIP_MATCH_HOST: { value = (u32) buf & 0xffffffff; switch (reg->match.addr) { case 0: /* cx231xx internal registers */ data[0] = (u8) value; data[1] = (u8) (value >> 8); data[2] = (u8) (value >> 16); data[3] = (u8) (value >> 24); ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, (u16)reg->reg, data, 4); break; case 1: /* Colibri - read byte */ ret = cx231xx_write_i2c_data(dev, Colibri_DEVICE_ADDRESS, (u16)reg->reg, 2, value, 1); break; case 14: /* Colibri - read dword */ ret = cx231xx_write_i2c_data(dev, Colibri_DEVICE_ADDRESS, (u16)reg->reg, 2, value, 4); break; case 2: /* Hammerhead - read byte */ ret = cx231xx_write_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS, (u16)reg->reg, 2, value, 1); break; case 24: /* Hammerhead - read dword */ ret = cx231xx_write_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS, (u16)reg->reg, 2, value, 4); break; case 3: /* flatiron - read byte */ ret = cx231xx_write_i2c_data(dev, Flatrion_DEVICE_ADDRESS, (u16)reg->reg, 1, value, 1); break; case 34: /* flatiron - read dword */ ret = cx231xx_write_i2c_data(dev, Flatrion_DEVICE_ADDRESS, (u16)reg->reg, 1, value, 4); break; } } return ret < 0 ? ret : 0; default: break; } mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_DBG_S_REGISTER, reg); mutex_unlock(&dev->lock); return ret; } #endif static int vidioc_cropcap(struct file *file, void *priv, struct v4l2_cropcap *cc) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; cc->bounds.left = 0; cc->bounds.top = 0; cc->bounds.width = dev->width; cc->bounds.height = dev->height; cc->defrect = cc->bounds; cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ cc->pixelaspect.denominator = 59; return 0; } static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); rc = res_get(fh); if (likely(rc >= 0)) rc = videobuf_streamon(&fh->vb_vidq); mutex_unlock(&dev->lock); return rc; } static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) || (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)) return -EINVAL; if (type != fh->type) return -EINVAL; mutex_lock(&dev->lock); videobuf_streamoff(&fh->vb_vidq); res_free(fh); mutex_unlock(&dev->lock); return 0; } static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; strlcpy(cap->driver, "cx231xx", sizeof(cap->driver)); strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card)); strlcpy(cap->bus_info, dev_name(&dev->udev->dev), sizeof(cap->bus_info)); cap->version = CX231XX_VERSION_CODE; cap->capabilities = V4L2_CAP_VBI_CAPTURE | #if 0 V4L2_CAP_SLICED_VBI_CAPTURE | #endif V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; if (dev->tuner_type != TUNER_ABSENT) cap->capabilities |= V4L2_CAP_TUNER; return 0; } static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (unlikely(f->index >= ARRAY_SIZE(format))) return -EINVAL; strlcpy(f->description, format[f->index].name, sizeof(f->description)); f->pixelformat = format[f->index].fourcc; return 0; } /* Sliced VBI ioctls */ static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); f->fmt.sliced.service_set = 0; cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_FMT, f); if (f->fmt.sliced.service_set == 0) rc = -EINVAL; mutex_unlock(&dev->lock); return rc; } static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_FMT, f); mutex_unlock(&dev->lock); if (f->fmt.sliced.service_set == 0) return -EINVAL; return 0; } /* RAW VBI ioctls */ static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ? 35468950 : 28636363; f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; f->fmt.vbi.offset = 64 * 4; f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? PAL_VBI_START_LINE : NTSC_VBI_START_LINE; f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? PAL_VBI_LINES : NTSC_VBI_LINES; f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; return 0; } static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; if (dev->vbi_stream_on && !fh->stream_on) { cx231xx_errdev("%s device in use by another fh\n", __func__); return -EBUSY; } f->type = V4L2_BUF_TYPE_VBI_CAPTURE; f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ? 35468950 : 28636363; f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; f->fmt.vbi.offset = 244; f->fmt.vbi.flags = 0; f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? PAL_VBI_START_LINE : NTSC_VBI_START_LINE; f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? PAL_VBI_LINES : NTSC_VBI_LINES; f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; return 0; } static int vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *rb) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; return videobuf_reqbufs(&fh->vb_vidq, rb); } static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; return videobuf_querybuf(&fh->vb_vidq, b); } static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; return videobuf_qbuf(&fh->vb_vidq, b); } static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK); } #ifdef CONFIG_VIDEO_V4L1_COMPAT static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) { struct cx231xx_fh *fh = priv; return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); } #endif /* ----------------------------------------------------------- */ /* RADIO ESPECIFIC IOCTLS */ /* ----------------------------------------------------------- */ static int radio_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; strlcpy(cap->driver, "cx231xx", sizeof(cap->driver)); strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card)); usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); cap->version = CX231XX_VERSION_CODE; cap->capabilities = V4L2_CAP_TUNER; return 0; } static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; if (unlikely(t->index > 0)) return -EINVAL; strcpy(t->name, "Radio"); t->type = V4L2_TUNER_RADIO; mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_G_TUNER, t); mutex_unlock(&dev->lock); return 0; } static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i) { if (i->index != 0) return -EINVAL; strcpy(i->name, "Radio"); i->type = V4L2_INPUT_TYPE_TUNER; return 0; } static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a) { if (unlikely(a->index)) return -EINVAL; strcpy(a->name, "Radio"); return 0; } static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; if (0 != t->index) return -EINVAL; mutex_lock(&dev->lock); cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_TUNER, t); mutex_unlock(&dev->lock); return 0; } static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a) { return 0; } static int radio_s_input(struct file *file, void *fh, unsigned int i) { return 0; } static int radio_queryctrl(struct file *file, void *priv, struct v4l2_queryctrl *c) { int i; if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1) return -EINVAL; if (c->id == V4L2_CID_AUDIO_MUTE) { for (i = 0; i < CX231XX_CTLS; i++) if (cx231xx_ctls[i].v.id == c->id) break; *c = cx231xx_ctls[i].v; } else *c = no_ctl; return 0; } /* * cx231xx_v4l2_open() * inits the device and starts isoc transfer */ static int cx231xx_v4l2_open(struct file *filp) { int minor = video_devdata(filp)->minor; int errCode = 0, radio = 0; struct cx231xx *dev = NULL; struct cx231xx_fh *fh; enum v4l2_buf_type fh_type = 0; dev = cx231xx_get_device(minor, &fh_type, &radio); if (NULL == dev) return -ENODEV; mutex_lock(&dev->lock); cx231xx_videodbg("open minor=%d type=%s users=%d\n", minor, v4l2_type_names[fh_type], dev->users); #if 0 errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); if (errCode < 0) { cx231xx_errdev ("Device locked on digital mode. Can't open analog\n"); mutex_unlock(&dev->lock); return -EBUSY; } #endif fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL); if (!fh) { cx231xx_errdev("cx231xx-video.c: Out of memory?!\n"); mutex_unlock(&dev->lock); return -ENOMEM; } fh->dev = dev; fh->radio = radio; fh->type = fh_type; filp->private_data = fh; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { dev->width = norm_maxw(dev); dev->height = norm_maxh(dev); dev->hscale = 0; dev->vscale = 0; /* Power up in Analog TV mode */ cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV); #if 0 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); #endif cx231xx_resolution_set(dev); /* set video alternate setting */ cx231xx_set_video_alternate(dev); /* Needed, since GPIO might have disabled power of some i2c device */ cx231xx_config_i2c(dev); /* device needs to be initialized before isoc transfer */ dev->video_input = dev->video_input > 2 ? 2 : dev->video_input; video_mux(dev, dev->video_input); } if (fh->radio) { cx231xx_videodbg("video_open: setting radio device\n"); /* cx231xx_start_radio(dev); */ cx231xx_i2c_call_clients(&dev->i2c_bus[1], AUDC_SET_RADIO, NULL); } dev->users++; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops, NULL, &dev->video_mode.slock, fh->type, V4L2_FIELD_INTERLACED, sizeof(struct cx231xx_buffer), fh); if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { /* Set the required alternate setting VBI interface works in Bulk mode only */ cx231xx_set_alt_setting(dev, INDEX_VANC, 0); videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops, NULL, &dev->vbi_mode.slock, fh->type, V4L2_FIELD_SEQ_TB, sizeof(struct cx231xx_buffer), fh); } mutex_unlock(&dev->lock); return errCode; } /* * cx231xx_realease_resources() * unregisters the v4l2,i2c and usb devices * called when the device gets disconected or at module unload */ void cx231xx_release_analog_resources(struct cx231xx *dev) { /*FIXME: I2C IR should be disconnected */ if (dev->radio_dev) { if (-1 != dev->radio_dev->minor) video_unregister_device(dev->radio_dev); else video_device_release(dev->radio_dev); dev->radio_dev = NULL; } if (dev->vbi_dev) { cx231xx_info("V4L2 device /dev/vbi%d deregistered\n", dev->vbi_dev->num); if (-1 != dev->vbi_dev->minor) video_unregister_device(dev->vbi_dev); else video_device_release(dev->vbi_dev); dev->vbi_dev = NULL; } if (dev->vdev) { cx231xx_info("V4L2 device /dev/video%d deregistered\n", dev->vdev->num); if (-1 != dev->vdev->minor) video_unregister_device(dev->vdev); else video_device_release(dev->vdev); dev->vdev = NULL; } } /* * cx231xx_v4l2_close() * stops streaming and deallocates all resources allocated by the v4l2 * calls and ioctls */ static int cx231xx_v4l2_close(struct file *filp) { struct cx231xx_fh *fh = filp->private_data; struct cx231xx *dev = fh->dev; cx231xx_videodbg("users=%d\n", dev->users); mutex_lock(&dev->lock); if (res_check(fh)) res_free(fh); if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { videobuf_stop(&fh->vb_vidq); videobuf_mmap_free(&fh->vb_vidq); /* the device is already disconnect, free the remaining resources */ if (dev->state & DEV_DISCONNECTED) { cx231xx_release_resources(dev); mutex_unlock(&dev->lock); kfree(dev); return 0; } /* do this before setting alternate! */ cx231xx_uninit_vbi_isoc(dev); /* set alternate 0 */ if (!dev->vbi_or_sliced_cc_mode) cx231xx_set_alt_setting(dev, INDEX_VANC, 0); else cx231xx_set_alt_setting(dev, INDEX_HANC, 0); kfree(fh); dev->users--; wake_up_interruptible_nr(&dev->open, 1); mutex_unlock(&dev->lock); return 0; } if (dev->users == 1) { videobuf_stop(&fh->vb_vidq); videobuf_mmap_free(&fh->vb_vidq); /* the device is already disconnect, free the remaining resources */ if (dev->state & DEV_DISCONNECTED) { cx231xx_release_resources(dev); mutex_unlock(&dev->lock); kfree(dev); return 0; } /* Save some power by putting tuner to sleep */ cx231xx_i2c_call_clients(&dev->i2c_bus[1], TUNER_SET_STANDBY, NULL); /* do this before setting alternate! */ cx231xx_uninit_isoc(dev); cx231xx_set_mode(dev, CX231XX_SUSPEND); /* set alternate 0 */ cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0); } kfree(fh); dev->users--; wake_up_interruptible_nr(&dev->open, 1); mutex_unlock(&dev->lock); return 0; } /* * cx231xx_v4l2_read() * will allocate buffers when called for the first time */ static ssize_t cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count, loff_t *pos) { struct cx231xx_fh *fh = filp->private_data; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) { mutex_lock(&dev->lock); rc = res_get(fh); mutex_unlock(&dev->lock); if (unlikely(rc < 0)) return rc; return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, filp->f_flags & O_NONBLOCK); } return 0; } /* * cx231xx_v4l2_poll() * will allocate buffers when called for the first time */ static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait) { struct cx231xx_fh *fh = filp->private_data; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); rc = res_get(fh); mutex_unlock(&dev->lock); if (unlikely(rc < 0)) return POLLERR; if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) || (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) return videobuf_poll_stream(filp, &fh->vb_vidq, wait); else return POLLERR; } /* * cx231xx_v4l2_mmap() */ static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) { struct cx231xx_fh *fh = filp->private_data; struct cx231xx *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); rc = res_get(fh); mutex_unlock(&dev->lock); if (unlikely(rc < 0)) return rc; rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n", (unsigned long)vma->vm_start, (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, rc); return rc; } static const struct v4l2_file_operations cx231xx_v4l_fops = { .owner = THIS_MODULE, .open = cx231xx_v4l2_open, .release = cx231xx_v4l2_close, .read = cx231xx_v4l2_read, .poll = cx231xx_v4l2_poll, .mmap = cx231xx_v4l2_mmap, .ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap, .vidioc_s_fmt_vbi_cap = vidioc_try_fmt_vbi_cap, .vidioc_g_audio = vidioc_g_audio, .vidioc_s_audio = vidioc_s_audio, .vidioc_cropcap = vidioc_cropcap, .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap, .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_s_std = vidioc_s_std, .vidioc_g_std = vidioc_g_std, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_queryctrl = vidioc_queryctrl, .vidioc_g_ctrl = vidioc_g_ctrl, .vidioc_s_ctrl = vidioc_s_ctrl, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, #endif #ifdef CONFIG_VIDEO_V4L1_COMPAT .vidiocgmbuf = vidiocgmbuf, #endif }; static struct video_device cx231xx_vbi_template; static const struct video_device cx231xx_video_template = { .fops = &cx231xx_v4l_fops, .release = video_device_release, .ioctl_ops = &video_ioctl_ops, .minor = -1, .tvnorms = V4L2_STD_ALL, .current_norm = V4L2_STD_PAL, }; static const struct v4l2_file_operations radio_fops = { .owner = THIS_MODULE, .open = cx231xx_v4l2_open, .release = cx231xx_v4l2_close, .ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops radio_ioctl_ops = { .vidioc_querycap = radio_querycap, .vidioc_g_tuner = radio_g_tuner, .vidioc_enum_input = radio_enum_input, .vidioc_g_audio = radio_g_audio, .vidioc_s_tuner = radio_s_tuner, .vidioc_s_audio = radio_s_audio, .vidioc_s_input = radio_s_input, .vidioc_queryctrl = radio_queryctrl, .vidioc_g_ctrl = vidioc_g_ctrl, .vidioc_s_ctrl = vidioc_s_ctrl, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, #endif }; static struct video_device cx231xx_radio_template = { .name = "cx231xx-radio", .fops = &radio_fops, .ioctl_ops = &radio_ioctl_ops, .minor = -1, }; /******************************** usb interface ******************************/ static struct video_device *cx231xx_vdev_init(struct cx231xx *dev, const struct video_device *template, const char *type_name) { struct video_device *vfd; vfd = video_device_alloc(); if (NULL == vfd) return NULL; *vfd = *template; vfd->minor = -1; vfd->parent = &dev->udev->dev; vfd->release = video_device_release; vfd->debug = video_debug; snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name); return vfd; } int cx231xx_register_analog_devices(struct cx231xx *dev) { int ret; cx231xx_info("%s()\n", __func__); cx231xx_info("%s: v4l2 driver version %d.%d.%d\n", dev->name, (CX231XX_VERSION_CODE >> 16) & 0xff, (CX231XX_VERSION_CODE >> 8) & 0xff, CX231XX_VERSION_CODE & 0xff); /* set default norm */ /*dev->norm = cx231xx_video_template.current_norm; */ dev->width = norm_maxw(dev); dev->height = norm_maxh(dev); dev->interlaced = 0; dev->hscale = 0; dev->vscale = 0; /* Analog specific initialization */ dev->format = &format[0]; /* video_mux(dev, dev->video_input); */ /* Audio defaults */ dev->mute = 1; dev->volume = 0x1f; /* enable vbi capturing */ /* write code here... */ /* allocate and fill video video_device struct */ dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video"); if (!dev->vdev) { cx231xx_errdev("cannot allocate video_device.\n"); return -ENODEV; } /* register v4l2 video video_device */ ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER, video_nr[dev->devno]); if (ret) { cx231xx_errdev("unable to register video device (error=%i).\n", ret); return ret; } cx231xx_info("%s/0: registered device video%d [v4l2]\n", dev->name, dev->vdev->num); /* Initialize VBI template */ memcpy(&cx231xx_vbi_template, &cx231xx_video_template, sizeof(cx231xx_vbi_template)); strcpy(cx231xx_vbi_template.name, "cx231xx-vbi"); /* Allocate and fill vbi video_device struct */ dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi"); /* register v4l2 vbi video_device */ ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, vbi_nr[dev->devno]); if (ret < 0) { cx231xx_errdev("unable to register vbi device\n"); return ret; } cx231xx_info("%s/0: registered device vbi%d\n", dev->name, dev->vbi_dev->num); if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) { dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template, "radio"); if (!dev->radio_dev) { cx231xx_errdev("cannot allocate video_device.\n"); return -ENODEV; } ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO, radio_nr[dev->devno]); if (ret < 0) { cx231xx_errdev("can't register radio device\n"); return ret; } cx231xx_info("Registered radio device as /dev/radio%d\n", dev->radio_dev->num); } cx231xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", dev->vdev->num, dev->vbi_dev->num); return 0; }