diff options
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-video.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 2624 |
1 files changed, 0 insertions, 2624 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c deleted file mode 100644 index ecb23df7f16..00000000000 --- a/drivers/media/video/em28xx/em28xx-video.c +++ /dev/null @@ -1,2624 +0,0 @@ -/* - 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 |