diff options
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-video.c')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 2624 |
1 files changed, 2624 insertions, 0 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c new file mode 100644 index 000000000000..1e553d357380 --- /dev/null +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -0,0 +1,2624 @@ +/* + em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB + video capture devices + + Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> + Markus Rechberger <mrechberger@gmail.com> + Mauro Carvalho Chehab <mchehab@infradead.org> + Sascha Sommer <saschasommer@freenet.de> + + Some parts based on SN9C10x PC Camera Controllers GPL driver made + by Luca Risolia <luca.risolia@studio.unibo.it> + + 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 <linux/init.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/bitmap.h> +#include <linux/usb.h> +#include <linux/i2c.h> +#include <linux/mm.h> +#include <linux/mutex.h> +#include <linux/slab.h> + +#include "em28xx.h" +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-chip-ident.h> +#include <media/msp3400.h> +#include <media/tuner.h> + +#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ + "Markus Rechberger <mrechberger@gmail.com>, " \ + "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ + "Sascha Sommer <saschasommer@freenet.de>" + +#define DRIVER_DESC "Empia em28xx based USB video device driver" + +#define EM28XX_VERSION "0.1.3" + +#define em28xx_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 em28xx_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"); +MODULE_VERSION(EM28XX_VERSION); + +static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; +static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; +static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; + +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(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 em28xx_fmt format[] = { + { + .name = "16 bpp YUY2, 4:2:2, packed", + .fourcc = V4L2_PIX_FMT_YUYV, + .depth = 16, + .reg = EM28XX_OUTFMT_YUV422_Y0UY1V, + }, { + .name = "16 bpp RGB 565, LE", + .fourcc = V4L2_PIX_FMT_RGB565, + .depth = 16, + .reg = EM28XX_OUTFMT_RGB_16_656, + }, { + .name = "8 bpp Bayer BGBG..GRGR", + .fourcc = V4L2_PIX_FMT_SBGGR8, + .depth = 8, + .reg = EM28XX_OUTFMT_RGB_8_BGBG, + }, { + .name = "8 bpp Bayer GRGR..BGBG", + .fourcc = V4L2_PIX_FMT_SGRBG8, + .depth = 8, + .reg = EM28XX_OUTFMT_RGB_8_GRGR, + }, { + .name = "8 bpp Bayer GBGB..RGRG", + .fourcc = V4L2_PIX_FMT_SGBRG8, + .depth = 8, + .reg = EM28XX_OUTFMT_RGB_8_GBGB, + }, { + .name = "12 bpp YUV411", + .fourcc = V4L2_PIX_FMT_YUV411P, + .depth = 12, + .reg = EM28XX_OUTFMT_YUV411, + }, +}; + +/* supported controls */ +/* Common to all boards */ +static struct v4l2_queryctrl ac97_qctrl[] = { + { + .id = V4L2_CID_AUDIO_VOLUME, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Volume", + .minimum = 0x0, + .maximum = 0x1f, + .step = 0x1, + .default_value = 0x1f, + .flags = V4L2_CTRL_FLAG_SLIDER, + }, { + .id = V4L2_CID_AUDIO_MUTE, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "Mute", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 1, + .flags = 0, + } +}; + +/* ------------------------------------------------------------------ + DMA and thread functions + ------------------------------------------------------------------*/ + +/* + * Announces that a buffer were filled and request the next + */ +static inline void buffer_filled(struct em28xx *dev, + struct em28xx_dmaqueue *dma_q, + struct em28xx_buffer *buf) +{ + /* Advice that buffer was filled */ + em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); + buf->vb.state = VIDEOBUF_DONE; + buf->vb.field_count++; + do_gettimeofday(&buf->vb.ts); + + dev->isoc_ctl.vid_buf = NULL; + + list_del(&buf->vb.queue); + wake_up(&buf->vb.done); +} + +static inline void vbi_buffer_filled(struct em28xx *dev, + struct em28xx_dmaqueue *dma_q, + struct em28xx_buffer *buf) +{ + /* Advice that buffer was filled */ + em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); + + buf->vb.state = VIDEOBUF_DONE; + buf->vb.field_count++; + do_gettimeofday(&buf->vb.ts); + + dev->isoc_ctl.vbi_buf = NULL; + + list_del(&buf->vb.queue); + wake_up(&buf->vb.done); +} + +/* + * Identify the buffer header type and properly handles + */ +static void em28xx_copy_video(struct em28xx *dev, + struct em28xx_dmaqueue *dma_q, + struct em28xx_buffer *buf, + unsigned char *p, + unsigned char *outp, unsigned long len) +{ + void *fieldstart, *startwrite, *startread; + int linesdone, currlinedone, offset, lencopy, remain; + int bytesperline = dev->width << 1; + + if (dma_q->pos + len > buf->vb.size) + len = buf->vb.size - dma_q->pos; + + startread = p; + remain = len; + + if (dev->progressive) + fieldstart = outp; + else { + /* Interlaces two half frames */ + if (buf->top_field) + fieldstart = outp; + else + fieldstart = outp + bytesperline; + } + + linesdone = dma_q->pos / bytesperline; + currlinedone = dma_q->pos % bytesperline; + + if (dev->progressive) + offset = linesdone * bytesperline + currlinedone; + else + offset = linesdone * bytesperline * 2 + currlinedone; + + startwrite = fieldstart + offset; + lencopy = bytesperline - currlinedone; + lencopy = lencopy > remain ? remain : lencopy; + + if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) { + em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n", + ((char *)startwrite + lencopy) - + ((char *)outp + buf->vb.size)); + remain = (char *)outp + buf->vb.size - (char *)startwrite; + lencopy = remain; + } + if (lencopy <= 0) + return; + memcpy(startwrite, startread, lencopy); + + remain -= lencopy; + + while (remain > 0) { + startwrite += lencopy + bytesperline; + startread += lencopy; + if (bytesperline > remain) + lencopy = remain; + else + lencopy = bytesperline; + + if ((char *)startwrite + lencopy > (char *)outp + + buf->vb.size) { + em28xx_isocdbg("Overflow of %zi bytes past buffer end" + "(2)\n", + ((char *)startwrite + lencopy) - + ((char *)outp + buf->vb.size)); + lencopy = remain = (char *)outp + buf->vb.size - + (char *)startwrite; + } + if (lencopy <= 0) + break; + + memcpy(startwrite, startread, lencopy); + + remain -= lencopy; + } + + dma_q->pos += len; +} + +static void em28xx_copy_vbi(struct em28xx *dev, + struct em28xx_dmaqueue *dma_q, + struct em28xx_buffer *buf, + unsigned char *p, + unsigned char *outp, unsigned long len) +{ + void *startwrite, *startread; + int offset; + int bytesperline; + + if (dev == NULL) { + em28xx_isocdbg("dev is null\n"); + return; + } + bytesperline = dev->vbi_width; + + if (dma_q == NULL) { + em28xx_isocdbg("dma_q is null\n"); + return; + } + if (buf == NULL) { + return; + } + if (p == NULL) { + em28xx_isocdbg("p is null\n"); + return; + } + if (outp == NULL) { + em28xx_isocdbg("outp is null\n"); + return; + } + + if (dma_q->pos + len > buf->vb.size) + len = buf->vb.size - dma_q->pos; + + startread = p; + + startwrite = outp + dma_q->pos; + offset = dma_q->pos; + + /* Make sure the bottom field populates the second half of the frame */ + if (buf->top_field == 0) { + startwrite += bytesperline * dev->vbi_height; + offset += bytesperline * dev->vbi_height; + } + + memcpy(startwrite, startread, len); + dma_q->pos += len; +} + +static inline void print_err_status(struct em28xx *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) { + em28xx_isocdbg("URB status %d [%s].\n", status, errmsg); + } else { + em28xx_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 em28xx_dmaqueue *dma_q, + struct em28xx_buffer **buf) +{ + struct em28xx *dev = container_of(dma_q, struct em28xx, vidq); + char *outp; + + if (list_empty(&dma_q->active)) { + em28xx_isocdbg("No active queue to serve\n"); + dev->isoc_ctl.vid_buf = NULL; + *buf = NULL; + return; + } + + /* Get the next buffer */ + *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue); + + /* Cleans up buffer - Useful for testing for frame/URB loss */ + outp = videobuf_to_vmalloc(&(*buf)->vb); + memset(outp, 0, (*buf)->vb.size); + + dev->isoc_ctl.vid_buf = *buf; + + return; +} + +/* + * video-buf generic routine to get the next available VBI buffer + */ +static inline void vbi_get_next_buf(struct em28xx_dmaqueue *dma_q, + struct em28xx_buffer **buf) +{ + struct em28xx *dev = container_of(dma_q, struct em28xx, vbiq); + char *outp; + + if (list_empty(&dma_q->active)) { + em28xx_isocdbg("No active queue to serve\n"); + dev->isoc_ctl.vbi_buf = NULL; + *buf = NULL; + return; + } + + /* Get the next buffer */ + *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue); + /* Cleans up buffer - Useful for testing for frame/URB loss */ + outp = videobuf_to_vmalloc(&(*buf)->vb); + memset(outp, 0x00, (*buf)->vb.size); + + dev->isoc_ctl.vbi_buf = *buf; + + return; +} + +/* + * Controls the isoc copy of each urb packet + */ +static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb) +{ + struct em28xx_buffer *buf; + struct em28xx_dmaqueue *dma_q = &dev->vidq; + unsigned char *outp = NULL; + int i, len = 0, rc = 1; + unsigned char *p; + + 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->isoc_ctl.vid_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; + } + + len = urb->iso_frame_desc[i].actual_length - 4; + + if (urb->iso_frame_desc[i].actual_length <= 0) { + /* em28xx_isocdbg("packet %d is empty",i); - spammy */ + continue; + } + if (urb->iso_frame_desc[i].actual_length > + dev->max_pkt_size) { + em28xx_isocdbg("packet bigger than packet size"); + continue; + } + + p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; + + /* FIXME: incomplete buffer checks where removed to make + logic simpler. Impacts of those changes should be evaluated + */ + if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) { + em28xx_isocdbg("VBI HEADER!!!\n"); + /* FIXME: Should add vbi copy */ + continue; + } + if (p[0] == 0x22 && p[1] == 0x5a) { + em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2], + len, (p[2] & 1) ? "odd" : "even"); + + if (dev->progressive || !(p[2] & 1)) { + if (buf != NULL) + buffer_filled(dev, dma_q, buf); + get_next_buf(dma_q, &buf); + if (buf == NULL) + outp = NULL; + else + outp = videobuf_to_vmalloc(&buf->vb); + } + + if (buf != NULL) { + if (p[2] & 1) + buf->top_field = 0; + else + buf->top_field = 1; + } + + dma_q->pos = 0; + } + if (buf != NULL) { + if (p[0] != 0x88 && p[0] != 0x22) { + em28xx_isocdbg("frame is not complete\n"); + len += 4; + } else { + p += 4; + } + em28xx_copy_video(dev, dma_q, buf, p, outp, len); + } + } + return rc; +} + +/* Version of isoc handler that takes into account a mixture of video and + VBI data */ +static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb) +{ + struct em28xx_buffer *buf, *vbi_buf; + struct em28xx_dmaqueue *dma_q = &dev->vidq; + struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq; + unsigned char *outp = NULL; + unsigned char *vbioutp = NULL; + int i, len = 0, rc = 1; + unsigned char *p; + int vbi_size; + + 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->isoc_ctl.vid_buf; + if (buf != NULL) + outp = videobuf_to_vmalloc(&buf->vb); + + vbi_buf = dev->isoc_ctl.vbi_buf; + if (vbi_buf != NULL) + vbioutp = videobuf_to_vmalloc(&vbi_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; + } + + len = urb->iso_frame_desc[i].actual_length; + if (urb->iso_frame_desc[i].actual_length <= 0) { + /* em28xx_isocdbg("packet %d is empty",i); - spammy */ + continue; + } + if (urb->iso_frame_desc[i].actual_length > + dev->max_pkt_size) { + em28xx_isocdbg("packet bigger than packet size"); + continue; + } + + p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; + + /* capture type 0 = vbi start + capture type 1 = video start + capture type 2 = video in progress */ + if (p[0] == 0x33 && p[1] == 0x95) { + dev->capture_type = 0; + dev->vbi_read = 0; + em28xx_isocdbg("VBI START HEADER!!!\n"); + dev->cur_field = p[2]; + p += 4; + len -= 4; + } else if (p[0] == 0x88 && p[1] == 0x88 && + p[2] == 0x88 && p[3] == 0x88) { + /* continuation */ + p += 4; + len -= 4; + } else if (p[0] == 0x22 && p[1] == 0x5a) { + /* start video */ + p += 4; + len -= 4; + } + + vbi_size = dev->vbi_width * dev->vbi_height; + + if (dev->capture_type == 0) { + if (dev->vbi_read >= vbi_size) { + /* We've already read all the VBI data, so + treat the rest as video */ + em28xx_isocdbg("dev->vbi_read > vbi_size\n"); + } else if ((dev->vbi_read + len) < vbi_size) { + /* This entire frame is VBI data */ + if (dev->vbi_read == 0 && + (!(dev->cur_field & 1))) { + /* Brand new frame */ + if (vbi_buf != NULL) + vbi_buffer_filled(dev, + vbi_dma_q, + vbi_buf); + vbi_get_next_buf(vbi_dma_q, &vbi_buf); + if (vbi_buf == NULL) + vbioutp = NULL; + else + vbioutp = videobuf_to_vmalloc( + &vbi_buf->vb); + } + + if (dev->vbi_read == 0) { + vbi_dma_q->pos = 0; + if (vbi_buf != NULL) { + if (dev->cur_field & 1) + vbi_buf->top_field = 0; + else + vbi_buf->top_field = 1; + } + } + + dev->vbi_read += len; + em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p, + vbioutp, len); + } else { + /* Some of this frame is VBI data and some is + video data */ + int vbi_data_len = vbi_size - dev->vbi_read; + dev->vbi_read += vbi_data_len; + em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p, + vbioutp, vbi_data_len); + dev->capture_type = 1; + p += vbi_data_len; + len -= vbi_data_len; + } + } + + if (dev->capture_type == 1) { + dev->capture_type = 2; + if (dev->progressive || !(dev->cur_field & 1)) { + if (buf != NULL) + buffer_filled(dev, dma_q, buf); + get_next_buf(dma_q, &buf); + if (buf == NULL) + outp = NULL; + else + outp = videobuf_to_vmalloc(&buf->vb); + } + if (buf != NULL) { + if (dev->cur_field & 1) + buf->top_field = 0; + else + buf->top_field = 1; + } + + dma_q->pos = 0; + } + + if (buf != NULL && dev->capture_type == 2) { + if (len >= 4 && p[0] == 0x88 && p[1] == 0x88 && + p[2] == 0x88 && p[3] == 0x88) { + p += 4; + len -= 4; + } + if (len >= 4 && p[0] == 0x22 && p[1] == 0x5a) { + em28xx_isocdbg("Video frame %d, len=%i, %s\n", + p[2], len, (p[2] & 1) ? + "odd" : "even"); + p += 4; + len -= 4; + } + + if (len > 0) + em28xx_copy_video(dev, dma_q, buf, p, outp, + len); + } + } + return rc; +} + + +/* ------------------------------------------------------------------ + Videobuf operations + ------------------------------------------------------------------*/ + +static int +buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) +{ + struct em28xx_fh *fh = vq->priv_data; + struct em28xx *dev = fh->dev; + struct v4l2_frequency f; + + *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) + >> 3; + + if (0 == *count) + *count = EM28XX_DEF_BUF; + + if (*count < EM28XX_MIN_BUF) + *count = EM28XX_MIN_BUF; + + /* Ask tuner to go to analog or radio mode */ + memset(&f, 0, sizeof(f)); + f.frequency = dev->ctl_freq; + f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, 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 em28xx_buffer *buf) +{ + struct em28xx_fh *fh = vq->priv_data; + struct em28xx *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->slock, flags); + if (dev->isoc_ctl.vid_buf == buf) + dev->isoc_ctl.vid_buf = NULL; + spin_unlock_irqrestore(&dev->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 em28xx_fh *fh = vq->priv_data; + struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); + struct em28xx *dev = fh->dev; + int rc = 0, urb_init = 0; + + 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->isoc_ctl.analog_bufs.num_bufs) + urb_init = 1; + + if (urb_init) { + if (em28xx_vbi_supported(dev) == 1) + rc = em28xx_init_isoc(dev, EM28XX_ANALOG_MODE, + EM28XX_NUM_PACKETS, + EM28XX_NUM_BUFS, + dev->max_pkt_size, + em28xx_isoc_copy_vbi); + else + rc = em28xx_init_isoc(dev, EM28XX_ANALOG_MODE, + EM28XX_NUM_PACKETS, + EM28XX_NUM_BUFS, + dev->max_pkt_size, + em28xx_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 em28xx_buffer *buf = container_of(vb, + struct em28xx_buffer, + vb); + struct em28xx_fh *fh = vq->priv_data; + struct em28xx *dev = fh->dev; + struct em28xx_dmaqueue *vidq = &dev->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 em28xx_buffer *buf = container_of(vb, + struct em28xx_buffer, + vb); + struct em28xx_fh *fh = vq->priv_data; + struct em28xx *dev = (struct em28xx *)fh->dev; + + em28xx_isocdbg("em28xx: called buffer_release\n"); + + free_buffer(vq, buf); +} + +static struct videobuf_queue_ops em28xx_video_qops = { + .buf_setup = buffer_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .buf_release = buffer_release, +}; + +/********************* v4l2 interface **************************************/ + +static void video_mux(struct em28xx *dev, int index) +{ + dev->ctl_input = index; + dev->ctl_ainput = INPUT(index)->amux; + dev->ctl_aoutput = INPUT(index)->aout; + + if (!dev->ctl_aoutput) + dev->ctl_aoutput = EM28XX_AOUT_MASTER; + + v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing, + INPUT(index)->vmux, 0, 0); + + if (dev->board.has_msp34xx) { + if (dev->i2s_speed) { + v4l2_device_call_all(&dev->v4l2_dev, 0, audio, + s_i2s_clock_freq, dev->i2s_speed); + } + /* Note: this is msp3400 specific */ + v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, + dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0); + } + + if (dev->board.adecoder != EM28XX_NOADECODER) { + v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, + dev->ctl_ainput, dev->ctl_aoutput, 0); + } + + em28xx_audio_analog_set(dev); +} + +/* Usage lock check functions */ +static int res_get(struct em28xx_fh *fh, unsigned int bit) +{ + struct em28xx *dev = fh->dev; + + if (fh->resources & bit) + /* have it already allocated */ + return 1; + + /* is it free? */ + if (dev->resources & bit) { + /* no, someone else uses it */ + return 0; + } + /* it's free, grab it */ + fh->resources |= bit; + dev->resources |= bit; + em28xx_videodbg("res: get %d\n", bit); + return 1; +} + +static int res_check(struct em28xx_fh *fh, unsigned int bit) +{ + return fh->resources & bit; +} + +static int res_locked(struct em28xx *dev, unsigned int bit) +{ + return dev->resources & bit; +} + +static void res_free(struct em28xx_fh *fh, unsigned int bits) +{ + struct em28xx *dev = fh->dev; + + BUG_ON((fh->resources & bits) != bits); + + fh->resources &= ~bits; + dev->resources &= ~bits; + em28xx_videodbg("res: put %d\n", bits); +} + +static int get_ressource(struct em28xx_fh *fh) +{ + switch (fh->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + return EM28XX_RESOURCE_VIDEO; + case V4L2_BUF_TYPE_VBI_CAPTURE: + return EM28XX_RESOURCE_VBI; + default: + BUG(); + return 0; + } +} + +/* + * ac97_queryctrl() + * return the ac97 supported controls + */ +static int ac97_queryctrl(struct v4l2_queryctrl *qc) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) { + if (qc->id && qc->id == ac97_qctrl[i].id) { + memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc)); + return 0; + } + } + + /* Control is not ac97 related */ + return 1; +} + +/* + * ac97_get_ctrl() + * return the current values for ac97 mute and volume + */ +static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) +{ + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + ctrl->value = dev->mute; + return 0; + case V4L2_CID_AUDIO_VOLUME: + ctrl->value = dev->volume; + return 0; + default: + /* Control is not ac97 related */ + return 1; + } +} + +/* + * ac97_set_ctrl() + * set values for ac97 mute and volume + */ +static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) + if (ctrl->id == ac97_qctrl[i].id) + goto handle; + + /* Announce that hasn't handle it */ + return 1; + +handle: + if (ctrl->value < ac97_qctrl[i].minimum || + ctrl->value > ac97_qctrl[i].maximum) + return -ERANGE; + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + dev->mute = ctrl->value; + break; + case V4L2_CID_AUDIO_VOLUME: + dev->volume = ctrl->value; + break; + } + + return em28xx_audio_analog_set(dev); +} + +static int check_dev(struct em28xx *dev) +{ + if (dev->state & DEV_DISCONNECTED) { + em28xx_errdev("v4l2 ioctl: device not present\n"); + return -ENODEV; + } + + if (dev->state & DEV_MISCONFIGURED) { + em28xx_errdev("v4l2 ioctl: device is misconfigured; " + "close and open it again\n"); + return -EIO; + } + return 0; +} + +static void get_scale(struct em28xx *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; +} + +/* ------------------------------------------------------------------ + IOCTL vidioc handling + ------------------------------------------------------------------*/ + +static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + 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; + + /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ + if (dev->progressive) + f->fmt.pix.field = V4L2_FIELD_NONE; + else + f->fmt.pix.field = dev->interlaced ? + V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; + return 0; +} + +static struct em28xx_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 em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + unsigned int width = f->fmt.pix.width; + unsigned int height = f->fmt.pix.height; + unsigned int maxw = norm_maxw(dev); + unsigned int maxh = norm_maxh(dev); + unsigned int hscale, vscale; + struct em28xx_fmt *fmt; + + fmt = format_by_fourcc(f->fmt.pix.pixelformat); + if (!fmt) { + em28xx_videodbg("Fourcc format (%08x) invalid.\n", + f->fmt.pix.pixelformat); + return -EINVAL; + } + + if (dev->board.is_em2800) { + /* the em2800 can only scale down to 50% */ + height = height > (3 * maxh / 4) ? maxh : maxh / 2; + width = width > (3 * maxw / 4) ? maxw : maxw / 2; + /* MaxPacketSize for em2800 is too small to capture at full resolution + * use half of maxw as the scaler can only scale to 50% */ + if (width == maxw && height == maxh) + width /= 2; + } else { + /* width must even because of the YUYV format + height must be even because of interlacing */ + v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, + 1, 0); + } + + 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; + if (dev->progressive) + f->fmt.pix.field = V4L2_FIELD_NONE; + else + f->fmt.pix.field = dev->interlaced ? + V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; + + return 0; +} + +static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc, + unsigned width, unsigned height) +{ + struct em28xx_fmt *fmt; + + fmt = format_by_fourcc(fourcc); + if (!fmt) + return -EINVAL; + + dev->format = fmt; + dev->width = width; + dev->height = height; + + /* set new image size */ + get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); + + em28xx_set_alternate(dev); + em28xx_resolution_set(dev); + + return 0; +} + +static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + vidioc_try_fmt_vid_cap(file, priv, f); + + if (videobuf_queue_is_busy(&fh->vb_vidq)) { + em28xx_errdev("%s queue busy\n", __func__); + return -EBUSY; + } + + return em28xx_set_video_format(dev, f->fmt.pix.pixelformat, + f->fmt.pix.width, f->fmt.pix.height); +} + +static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + *norm = dev->norm; + + return 0; +} + +static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm); + + return 0; +} + +static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + struct v4l2_format f; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + 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); + + em28xx_resolution_set(dev); + v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); + + return 0; +} + +static int vidioc_g_parm(struct file *file, void *priv, + struct v4l2_streamparm *p) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc = 0; + + if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + if (dev->board.is_webcam) + rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0, + video, g_parm, p); + else + v4l2_video_std_frame_period(dev->norm, + &p->parm.capture.timeperframe); + + return rc; +} + +static int vidioc_s_parm(struct file *file, void *priv, + struct v4l2_streamparm *p) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + if (!dev->board.is_webcam) + return -EINVAL; + + if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p); +} + +static const char *iname[] = { + [EM28XX_VMUX_COMPOSITE1] = "Composite1", + [EM28XX_VMUX_COMPOSITE2] = "Composite2", + [EM28XX_VMUX_COMPOSITE3] = "Composite3", + [EM28XX_VMUX_COMPOSITE4] = "Composite4", + [EM28XX_VMUX_SVIDEO] = "S-Video", + [EM28XX_VMUX_TELEVISION] = "Television", + [EM28XX_VMUX_CABLE] = "Cable TV", + [EM28XX_VMUX_DVB] = "DVB", + [EM28XX_VMUX_DEBUG] = "for debug only", +}; + +static int vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + unsigned int n; + + n = i->index; + if (n >= MAX_EM28XX_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 ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || + (EM28XX_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 em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + *i = dev->ctl_input; + + return 0; +} + +static int vidioc_s_input(struct file *file, void *priv, unsigned int i) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (i >= MAX_EM28XX_INPUT) + return -EINVAL; + if (0 == INPUT(i)->type) + return -EINVAL; + + video_mux(dev, i); + return 0; +} + +static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + if (!dev->audio_mode.has_audio) + return -EINVAL; + + switch (a->index) { + case EM28XX_AMUX_VIDEO: + strcpy(a->name, "Television"); + break; + case EM28XX_AMUX_LINE_IN: + strcpy(a->name, "Line In"); + break; + case EM28XX_AMUX_VIDEO2: + strcpy(a->name, "Television alt"); + break; + case EM28XX_AMUX_PHONE: + strcpy(a->name, "Phone"); + break; + case EM28XX_AMUX_MIC: + strcpy(a->name, "Mic"); + break; + case EM28XX_AMUX_CD: + strcpy(a->name, "CD"); + break; + case EM28XX_AMUX_AUX: + strcpy(a->name, "Aux"); + break; + case EM28XX_AMUX_PCM_OUT: + strcpy(a->name, "PCM"); + 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, const struct v4l2_audio *a) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + + if (!dev->audio_mode.has_audio) + return -EINVAL; + + if (a->index >= MAX_EM28XX_INPUT) + return -EINVAL; + if (0 == INPUT(a->index)->type) + return -EINVAL; + + dev->ctl_ainput = INPUT(a->index)->amux; + dev->ctl_aoutput = INPUT(a->index)->aout; + + if (!dev->ctl_aoutput) + dev->ctl_aoutput = EM28XX_AOUT_MASTER; + + return 0; +} + +static int vidioc_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int id = qc->id; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + memset(qc, 0, sizeof(*qc)); + + qc->id = id; + + /* enumerate AC97 controls */ + if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { + rc = ac97_queryctrl(qc); + if (!rc) + return 0; + } + + /* enumerate V4L2 device controls */ + v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc); + + if (qc->type) + return 0; + else + return -EINVAL; +} + +/* + * FIXME: This is an indirect way to check if a control exists at a + * subdev. Instead of that hack, maybe the better would be to change all + * subdevs to return -ENOIOCTLCMD, if an ioctl is not supported. + */ +static int check_subdev_ctrl(struct em28xx *dev, int id) +{ + struct v4l2_queryctrl qc; + + memset(&qc, 0, sizeof(qc)); + qc.id = id; + + /* enumerate V4L2 device controls */ + v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, &qc); + + if (qc.type) + return 0; + else + return -EINVAL; +} + +static int vidioc_g_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + rc = 0; + + /* Set an AC97 control */ + if (dev->audio_mode.ac97 != EM28XX_NO_AC97) + rc = ac97_get_ctrl(dev, ctrl); + else + rc = 1; + + /* It were not an AC97 control. Sends it to the v4l2 dev interface */ + if (rc == 1) { + if (check_subdev_ctrl(dev, ctrl->id)) + return -EINVAL; + + v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl); + rc = 0; + } + + return rc; +} + +static int vidioc_s_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + /* Set an AC97 control */ + if (dev->audio_mode.ac97 != EM28XX_NO_AC97) + rc = ac97_set_ctrl(dev, ctrl); + else + rc = 1; + + /* It isn't an AC97 control. Sends it to the v4l2 dev interface */ + if (rc == 1) { + rc = check_subdev_ctrl(dev, ctrl->id); + if (!rc) + v4l2_device_call_all(&dev->v4l2_dev, 0, + core, s_ctrl, ctrl); + /* + * In the case of non-AC97 volume controls, we still need + * to do some setups at em28xx, in order to mute/unmute + * and to adjust audio volume. However, the value ranges + * should be checked by the corresponding V4L subdriver. + */ + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + dev->mute = ctrl->value; + rc = em28xx_audio_analog_set(dev); + break; + case V4L2_CID_AUDIO_VOLUME: + dev->volume = ctrl->value; + rc = em28xx_audio_analog_set(dev); + } + } + return (rc < 0) ? rc : 0; +} + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct em28xx_fh *fh = priv; + struct em28xx *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; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (0 != t->index) + return -EINVAL; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + f->frequency = dev->ctl_freq; + return 0; +} + +static int vidioc_s_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct em28xx_fh *fh = priv; + struct em28xx *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; + + dev->ctl_freq = f->frequency; + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f); + + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int em28xx_reg_len(int reg) +{ + switch (reg) { + case EM28XX_R40_AC97LSB: + case EM28XX_R30_HSCALELOW: + case EM28XX_R32_VSCALELOW: + return 2; + default: + return 1; + } +} + +static int vidioc_g_chip_ident(struct file *file, void *priv, + struct v4l2_dbg_chip_ident *chip) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + chip->ident = V4L2_IDENT_NONE; + chip->revision = 0; + + v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip); + + return 0; +} + + +static int vidioc_g_register(struct file *file, void *priv, + struct v4l2_dbg_register *reg) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int ret; + + switch (reg->match.type) { + case V4L2_CHIP_MATCH_AC97: + ret = em28xx_read_ac97(dev, reg->reg); + if (ret < 0) + return ret; + + reg->val = ret; + reg->size = 1; + return 0; + case V4L2_CHIP_MATCH_I2C_DRIVER: + v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg); + return 0; + case V4L2_CHIP_MATCH_I2C_ADDR: + /* TODO: is this correct? */ + v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg); + return 0; + default: + if (!v4l2_chip_match_host(®->match)) + return -EINVAL; + } + + /* Match host */ + reg->size = em28xx_reg_len(reg->reg); + if (reg->size == 1) { + ret = em28xx_read_reg(dev, reg->reg); + + if (ret < 0) + return ret; + + reg->val = ret; + } else { + __le16 val = 0; + ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, + reg->reg, (char *)&val, 2); + if (ret < 0) + return ret; + + reg->val = le16_to_cpu(val); + } + + return 0; +} + +static int vidioc_s_register(struct file *file, void *priv, + struct v4l2_dbg_register *reg) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + __le16 buf; + + switch (reg->match.type) { + case V4L2_CHIP_MATCH_AC97: + return em28xx_write_ac97(dev, reg->reg, reg->val); + case V4L2_CHIP_MATCH_I2C_DRIVER: + v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg); + return 0; + case V4L2_CHIP_MATCH_I2C_ADDR: + /* TODO: is this correct? */ + v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg); + return 0; + default: + if (!v4l2_chip_match_host(®->match)) + return -EINVAL; + } + + /* Match host */ + buf = cpu_to_le16(reg->val); + + return em28xx_write_regs(dev, reg->reg, (char *)&buf, + em28xx_reg_len(reg->reg)); +} +#endif + + +static int vidioc_cropcap(struct file *file, void *priv, + struct v4l2_cropcap *cc) +{ + struct em28xx_fh *fh = priv; + struct em28xx *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 em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc = -EINVAL; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (unlikely(type != fh->type)) + return -EINVAL; + + em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n", + fh, type, fh->resources, dev->resources); + + if (unlikely(!res_get(fh, get_ressource(fh)))) + return -EBUSY; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + rc = videobuf_streamon(&fh->vb_vidq); + else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) + rc = videobuf_streamon(&fh->vb_vbiq); + + return rc; +} + +static int vidioc_streamoff(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct em28xx_fh *fh = priv; + struct em28xx *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; + + em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n", + fh, type, fh->resources, dev->resources); + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + if (res_check(fh, EM28XX_RESOURCE_VIDEO)) { + videobuf_streamoff(&fh->vb_vidq); + res_free(fh, EM28XX_RESOURCE_VIDEO); + } + } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + if (res_check(fh, EM28XX_RESOURCE_VBI)) { + videobuf_streamoff(&fh->vb_vbiq); + res_free(fh, EM28XX_RESOURCE_VBI); + } + } + + return 0; +} + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); + strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); + usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); + + cap->capabilities = + V4L2_CAP_SLICED_VBI_CAPTURE | + V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; + + if (dev->vbi_dev) + cap->capabilities |= V4L2_CAP_VBI_CAPTURE; + + if (dev->audio_mode.has_audio) + cap->capabilities |= V4L2_CAP_AUDIO; + + 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; +} + +static int vidioc_enum_framesizes(struct file *file, void *priv, + struct v4l2_frmsizeenum *fsize) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + struct em28xx_fmt *fmt; + unsigned int maxw = norm_maxw(dev); + unsigned int maxh = norm_maxh(dev); + + fmt = format_by_fourcc(fsize->pixel_format); + if (!fmt) { + em28xx_videodbg("Fourcc format (%08x) invalid.\n", + fsize->pixel_format); + return -EINVAL; + } + + if (dev->board.is_em2800) { + if (fsize->index > 1) + return -EINVAL; + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; + fsize->discrete.width = maxw / (1 + fsize->index); + fsize->discrete.height = maxh / (1 + fsize->index); + return 0; + } + + if (fsize->index != 0) + return -EINVAL; + + /* Report a continuous range */ + fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; + fsize->stepwise.min_width = 48; + fsize->stepwise.min_height = 32; + fsize->stepwise.max_width = maxw; + fsize->stepwise.max_height = maxh; + fsize->stepwise.step_width = 1; + fsize->stepwise.step_height = 1; + return 0; +} + +/* Sliced VBI ioctls */ +static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + f->fmt.sliced.service_set = 0; + v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced); + + if (f->fmt.sliced.service_set == 0) + rc = -EINVAL; + + return rc; +} + +static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced); + + 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 *format) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + format->fmt.vbi.samples_per_line = dev->vbi_width; + format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; + format->fmt.vbi.offset = 0; + format->fmt.vbi.flags = 0; + format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; + format->fmt.vbi.count[0] = dev->vbi_height; + format->fmt.vbi.count[1] = dev->vbi_height; + + /* Varies by video standard (NTSC, PAL, etc.) */ + if (dev->norm & V4L2_STD_525_60) { + /* NTSC */ + format->fmt.vbi.start[0] = 10; + format->fmt.vbi.start[1] = 273; + } else if (dev->norm & V4L2_STD_625_50) { + /* PAL */ + format->fmt.vbi.start[0] = 6; + format->fmt.vbi.start[1] = 318; + } + + return 0; +} + +static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *format) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + format->fmt.vbi.samples_per_line = dev->vbi_width; + format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; + format->fmt.vbi.offset = 0; + format->fmt.vbi.flags = 0; + format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; + format->fmt.vbi.count[0] = dev->vbi_height; + format->fmt.vbi.count[1] = dev->vbi_height; + + /* Varies by video standard (NTSC, PAL, etc.) */ + if (dev->norm & V4L2_STD_525_60) { + /* NTSC */ + format->fmt.vbi.start[0] = 10; + format->fmt.vbi.start[1] = 273; + } else if (dev->norm & V4L2_STD_625_50) { + /* PAL */ + format->fmt.vbi.start[0] = 6; + format->fmt.vbi.start[1] = 318; + } + + return 0; +} + +static int vidioc_reqbufs(struct file *file, void *priv, + struct v4l2_requestbuffers *rb) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_reqbufs(&fh->vb_vidq, rb); + else + return videobuf_reqbufs(&fh->vb_vbiq, rb); +} + +static int vidioc_querybuf(struct file *file, void *priv, + struct v4l2_buffer *b) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_querybuf(&fh->vb_vidq, b); + else { + /* FIXME: I'm not sure yet whether this is a bug in zvbi or + the videobuf framework, but we probably shouldn't be + returning a buffer larger than that which was asked for. + At a minimum, it causes a crash in zvbi since it does + a memcpy based on the source buffer length */ + int result = videobuf_querybuf(&fh->vb_vbiq, b); + b->length = dev->vbi_width * dev->vbi_height * 2; + + return result; + } +} + +static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_qbuf(&fh->vb_vidq, b); + else + return videobuf_qbuf(&fh->vb_vbiq, b); +} + +static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & + O_NONBLOCK); + else + return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags & + O_NONBLOCK); +} + +/* ----------------------------------------------------------- */ +/* RADIO ESPECIFIC IOCTLS */ +/* ----------------------------------------------------------- */ + +static int radio_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; + + strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); + strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); + usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); + + cap->capabilities = V4L2_CAP_TUNER; + return 0; +} + +static int radio_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; + + if (unlikely(t->index > 0)) + return -EINVAL; + + strcpy(t->name, "Radio"); + t->type = V4L2_TUNER_RADIO; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); + + 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 em28xx *dev = ((struct em28xx_fh *)priv)->dev; + + if (0 != t->index) + return -EINVAL; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); + + return 0; +} + +static int radio_s_audio(struct file *file, void *fh, + const 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 *qc) +{ + int i; + + if (qc->id < V4L2_CID_BASE || + qc->id >= V4L2_CID_LASTP1) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) { + if (qc->id && qc->id == ac97_qctrl[i].id) { + memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc)); + return 0; + } + } + + return -EINVAL; +} + +/* + * em28xx_v4l2_open() + * inits the device and starts isoc transfer + */ +static int em28xx_v4l2_open(struct file *filp) +{ + int errCode = 0, radio = 0; + struct video_device *vdev = video_devdata(filp); + struct em28xx *dev = video_drvdata(filp); + enum v4l2_buf_type fh_type = 0; + struct em28xx_fh *fh; + enum v4l2_field field; + + switch (vdev->vfl_type) { + case VFL_TYPE_GRABBER: + fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + break; + case VFL_TYPE_VBI: + fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; + break; + case VFL_TYPE_RADIO: + radio = 1; + break; + } + + em28xx_videodbg("open dev=%s type=%s users=%d\n", + video_device_node_name(vdev), v4l2_type_names[fh_type], + dev->users); + + + if (mutex_lock_interruptible(&dev->lock)) + return -ERESTARTSYS; + fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); + if (!fh) { + em28xx_errdev("em28xx-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) { + em28xx_set_mode(dev, EM28XX_ANALOG_MODE); + em28xx_set_alternate(dev); + em28xx_resolution_set(dev); + + /* Needed, since GPIO might have disabled power of + some i2c device + */ + em28xx_wake_i2c(dev); + + } + if (fh->radio) { + em28xx_videodbg("video_open: setting radio device\n"); + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio); + } + + dev->users++; + + if (dev->progressive) + field = V4L2_FIELD_NONE; + else + field = V4L2_FIELD_INTERLACED; + + videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops, + NULL, &dev->slock, + V4L2_BUF_TYPE_VIDEO_CAPTURE, field, + sizeof(struct em28xx_buffer), fh, &dev->lock); + + videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops, + NULL, &dev->slock, + V4L2_BUF_TYPE_VBI_CAPTURE, + V4L2_FIELD_SEQ_TB, + sizeof(struct em28xx_buffer), fh, &dev->lock); + mutex_unlock(&dev->lock); + + return errCode; +} + +/* + * em28xx_realease_resources() + * unregisters the v4l2,i2c and usb devices + * called when the device gets disconected or at module unload +*/ +void em28xx_release_analog_resources(struct em28xx *dev) +{ + + /*FIXME: I2C IR should be disconnected */ + + if (dev->radio_dev) { + if (video_is_registered(dev->radio_dev)) + video_unregister_device(dev->radio_dev); + else + video_device_release(dev->radio_dev); + dev->radio_dev = NULL; + } + if (dev->vbi_dev) { + em28xx_info("V4L2 device %s deregistered\n", + video_device_node_name(dev->vbi_dev)); + if (video_is_registered(dev->vbi_dev)) + video_unregister_device(dev->vbi_dev); + else + video_device_release(dev->vbi_dev); + dev->vbi_dev = NULL; + } + if (dev->vdev) { + em28xx_info("V4L2 device %s deregistered\n", + video_device_node_name(dev->vdev)); + if (video_is_registered(dev->vdev)) + video_unregister_device(dev->vdev); + else + video_device_release(dev->vdev); + dev->vdev = NULL; + } +} + +/* + * em28xx_v4l2_close() + * stops streaming and deallocates all resources allocated by the v4l2 + * calls and ioctls + */ +static int em28xx_v4l2_close(struct file *filp) +{ + struct em28xx_fh *fh = filp->private_data; + struct em28xx *dev = fh->dev; + int errCode; + + em28xx_videodbg("users=%d\n", dev->users); + + mutex_lock(&dev->lock); + if (res_check(fh, EM28XX_RESOURCE_VIDEO)) { + videobuf_stop(&fh->vb_vidq); + res_free(fh, EM28XX_RESOURCE_VIDEO); + } + + if (res_check(fh, EM28XX_RESOURCE_VBI)) { + videobuf_stop(&fh->vb_vbiq); + res_free(fh, EM28XX_RESOURCE_VBI); + } + + if (dev->users == 1) { + /* the device is already disconnect, + free the remaining resources */ + if (dev->state & DEV_DISCONNECTED) { + em28xx_release_resources(dev); + kfree(dev->alt_max_pkt_size); + mutex_unlock(&dev->lock); + kfree(dev); + kfree(fh); + return 0; + } + + /* Save some power by putting tuner to sleep */ + v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0); + + /* do this before setting alternate! */ + em28xx_uninit_isoc(dev, EM28XX_ANALOG_MODE); + em28xx_set_mode(dev, EM28XX_SUSPEND); + + /* set alternate 0 */ + dev->alt = 0; + em28xx_videodbg("setting alternate 0\n"); + errCode = usb_set_interface(dev->udev, 0, 0); + if (errCode < 0) { + em28xx_errdev("cannot change alternate number to " + "0 (error=%i)\n", errCode); + } + } + + videobuf_mmap_free(&fh->vb_vidq); + videobuf_mmap_free(&fh->vb_vbiq); + kfree(fh); + dev->users--; + mutex_unlock(&dev->lock); + return 0; +} + +/* + * em28xx_v4l2_read() + * will allocate buffers when called for the first time + */ +static ssize_t +em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count, + loff_t *pos) +{ + struct em28xx_fh *fh = filp->private_data; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (mutex_lock_interruptible(&dev->lock)) + return -ERESTARTSYS; + /* FIXME: read() is not prepared to allow changing the video + resolution while streaming. Seems a bug at em28xx_set_fmt + */ + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + if (res_locked(dev, EM28XX_RESOURCE_VIDEO)) + rc = -EBUSY; + else + rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, + filp->f_flags & O_NONBLOCK); + } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + if (!res_get(fh, EM28XX_RESOURCE_VBI)) + rc = -EBUSY; + else + rc = videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0, + filp->f_flags & O_NONBLOCK); + } + mutex_unlock(&dev->lock); + + return rc; +} + +/* + * em28xx_poll() + * will allocate buffers when called for the first time + */ +static unsigned int em28xx_poll(struct file *filp, poll_table *wait) +{ + struct em28xx_fh *fh = filp->private_data; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + if (!res_get(fh, EM28XX_RESOURCE_VIDEO)) + return POLLERR; + return videobuf_poll_stream(filp, &fh->vb_vidq, wait); + } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + if (!res_get(fh, EM28XX_RESOURCE_VBI)) + return POLLERR; + return videobuf_poll_stream(filp, &fh->vb_vbiq, wait); + } else { + return POLLERR; + } +} + +static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait) +{ + struct em28xx_fh *fh = filp->private_data; + struct em28xx *dev = fh->dev; + unsigned int res; + + mutex_lock(&dev->lock); + res = em28xx_poll(filp, wait); + mutex_unlock(&dev->lock); + return res; +} + +/* + * em28xx_v4l2_mmap() + */ +static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct em28xx_fh *fh = filp->private_data; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (mutex_lock_interruptible(&dev->lock)) + return -ERESTARTSYS; + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); + else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) + rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma); + mutex_unlock(&dev->lock); + + em28xx_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 em28xx_v4l_fops = { + .owner = THIS_MODULE, + .open = em28xx_v4l2_open, + .release = em28xx_v4l2_close, + .read = em28xx_v4l2_read, + .poll = em28xx_v4l2_poll, + .mmap = em28xx_v4l2_mmap, + .unlocked_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_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, + .vidioc_enum_framesizes = vidioc_enum_framesizes, + .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_s_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_g_std = vidioc_g_std, + .vidioc_querystd = vidioc_querystd, + .vidioc_s_std = vidioc_s_std, + .vidioc_g_parm = vidioc_g_parm, + .vidioc_s_parm = vidioc_s_parm, + .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, + .vidioc_g_chip_ident = vidioc_g_chip_ident, +#endif +}; + +static const struct video_device em28xx_video_template = { + .fops = &em28xx_v4l_fops, + .release = video_device_release, + .ioctl_ops = &video_ioctl_ops, + + .tvnorms = V4L2_STD_ALL, + .current_norm = V4L2_STD_PAL, +}; + +static const struct v4l2_file_operations radio_fops = { + .owner = THIS_MODULE, + .open = em28xx_v4l2_open, + .release = em28xx_v4l2_close, + .unlocked_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 em28xx_radio_template = { + .name = "em28xx-radio", + .fops = &radio_fops, + .ioctl_ops = &radio_ioctl_ops, +}; + +/******************************** usb interface ******************************/ + + + +static struct video_device *em28xx_vdev_init(struct em28xx *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->v4l2_dev = &dev->v4l2_dev; + vfd->release = video_device_release; + vfd->debug = video_debug; + vfd->lock = &dev->lock; + + snprintf(vfd->name, sizeof(vfd->name), "%s %s", + dev->name, type_name); + + video_set_drvdata(vfd, dev); + return vfd; +} + +int em28xx_register_analog_devices(struct em28xx *dev) +{ + u8 val; + int ret; + unsigned int maxw; + + printk(KERN_INFO "%s: v4l2 driver version %s\n", + dev->name, EM28XX_VERSION); + + /* set default norm */ + dev->norm = em28xx_video_template.current_norm; + v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); + dev->interlaced = EM28XX_INTERLACED_DEFAULT; + + /* Analog specific initialization */ + dev->format = &format[0]; + + maxw = norm_maxw(dev); + /* MaxPacketSize for em2800 is too small to capture at full resolution + * use half of maxw as the scaler can only scale to 50% */ + if (dev->board.is_em2800) + maxw /= 2; + + em28xx_set_video_format(dev, format[0].fourcc, + maxw, norm_maxh(dev)); + + video_mux(dev, 0); + + /* Audio defaults */ + dev->mute = 1; + dev->volume = 0x1f; + +/* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */ + val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK); + em28xx_write_reg(dev, EM28XX_R0F_XCLK, + (EM28XX_XCLK_AUDIO_UNMUTE | val)); + + em28xx_set_outfmt(dev); + em28xx_colorlevels_set_default(dev); + em28xx_compression_disable(dev); + + /* allocate and fill video video_device struct */ + dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video"); + if (!dev->vdev) { + em28xx_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) { + em28xx_errdev("unable to register video device (error=%i).\n", + ret); + return ret; + } + + /* Allocate and fill vbi video_device struct */ + if (em28xx_vbi_supported(dev) == 1) { + dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, + "vbi"); + + /* register v4l2 vbi video_device */ + ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, + vbi_nr[dev->devno]); + if (ret < 0) { + em28xx_errdev("unable to register vbi device\n"); + return ret; + } + } + + if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { + dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, + "radio"); + if (!dev->radio_dev) { + em28xx_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) { + em28xx_errdev("can't register radio device\n"); + return ret; + } + em28xx_info("Registered radio device as %s\n", + video_device_node_name(dev->radio_dev)); + } + + em28xx_info("V4L2 video device registered as %s\n", + video_device_node_name(dev->vdev)); + + if (dev->vbi_dev) + em28xx_info("V4L2 VBI device registered as %s\n", + video_device_node_name(dev->vbi_dev)); + + return 0; +} |