| /* |
| 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/version.h> |
| #include <linux/mm.h> |
| #include <linux/mutex.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_CODE KERNEL_VERSION(0, 1, 2) |
| |
| #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"); |
| |
| 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; |
| |
| if (p[0] != 0x88 && p[0] != 0x22) { |
| em28xx_isocdbg("frame is not complete\n"); |
| len += 4; |
| } else |
| p += 4; |
| |
| 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 = 720; |
| |
| if (dev == NULL) { |
| em28xx_isocdbg("dev is null\n"); |
| return; |
| } |
| |
| 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; |
| |
| if ((p[0] == 0x33 && p[1] == 0x95) || |
| (p[0] == 0x88 && p[1] == 0x88)) { |
| /* Header field, advance past it */ |
| p += 4; |
| } else { |
| len += 4; |
| } |
| |
| 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 * 0x0c; |
| offset += bytesperline * 0x0c; |
| } |
| |
| 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 - Usefull 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 - Usefull 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) |
| 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 - 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; |
| |
| /* 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]; |
| } |
| |
| /* FIXME: get rid of hard-coded value */ |
| vbi_size = 720 * 0x0c; |
| |
| 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; |
| em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2], |
| len, (p[2] & 1) ? "odd" : "even"); |
| |
| 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) |
| 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.num_bufs) |
| urb_init = 1; |
| |
| if (urb_init) { |
| if (em28xx_vbi_supported(dev) == 1) |
| rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS, |
| EM28XX_NUM_BUFS, |
| dev->max_pkt_size, |
| em28xx_isoc_copy_vbi); |
| else |
| rc = em28xx_init_isoc(dev, 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? */ |
| mutex_lock(&dev->lock); |
| if (dev->resources & bit) { |
| /* no, someone else uses it */ |
| mutex_unlock(&dev->lock); |
| return 0; |
| } |
| /* it's free, grab it */ |
| fh->resources |= bit; |
| dev->resources |= bit; |
| em28xx_videodbg("res: get %d\n", bit); |
| mutex_unlock(&dev->lock); |
| 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); |
| |
| mutex_lock(&dev->lock); |
| fh->resources &= ~bits; |
| dev->resources &= ~bits; |
| em28xx_videodbg("res: put %d\n", bits); |
| mutex_unlock(&dev->lock); |
| } |
| |
| 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; |
| |
| mutex_lock(&dev->lock); |
| |
| f->fmt.pix.width = dev->width; |
| f->fmt.pix.height = dev->height; |
| f->fmt.pix.pixelformat = dev->format->fourcc; |
| f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; |
| f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; |
| f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; |
| |
| /* 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; |
| |
| mutex_unlock(&dev->lock); |
| 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; |
| } 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; |
| |
| mutex_lock(&dev->lock); |
| |
| vidioc_try_fmt_vid_cap(file, priv, f); |
| |
| if (videobuf_queue_is_busy(&fh->vb_vidq)) { |
| em28xx_errdev("%s queue busy\n", __func__); |
| rc = -EBUSY; |
| goto out; |
| } |
| |
| rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat, |
| f->fmt.pix.width, f->fmt.pix.height); |
| |
| out: |
| mutex_unlock(&dev->lock); |
| return rc; |
| } |
| |
| 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_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; |
| |
| mutex_lock(&dev->lock); |
| dev->norm = *norm; |
| |
| /* Adjusts width/height, if needed */ |
| f.fmt.pix.width = dev->width; |
| f.fmt.pix.height = dev->height; |
| vidioc_try_fmt_vid_cap(file, priv, &f); |
| |
| /* set new image size */ |
| dev->width = f.fmt.pix.width; |
| dev->height = f.fmt.pix.height; |
| get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); |
| |
| em28xx_resolution_set(dev); |
| v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); |
| |
| mutex_unlock(&dev->lock); |
| 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; |
| |
| dev->ctl_input = i; |
| |
| mutex_lock(&dev->lock); |
| video_mux(dev, dev->ctl_input); |
| mutex_unlock(&dev->lock); |
| 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, 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; |
| |
| mutex_lock(&dev->lock); |
| |
| dev->ctl_ainput = INPUT(a->index)->amux; |
| dev->ctl_aoutput = INPUT(a->index)->aout; |
| |
| if (!dev->ctl_aoutput) |
| dev->ctl_aoutput = EM28XX_AOUT_MASTER; |
| |
| mutex_unlock(&dev->lock); |
| 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; |
| |
| /* enumberate AC97 controls */ |
| if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { |
| rc = ac97_queryctrl(qc); |
| if (!rc) |
| return 0; |
| } |
| |
| /* enumberate V4L2 device controls */ |
| mutex_lock(&dev->lock); |
| v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc); |
| mutex_unlock(&dev->lock); |
| |
| if (qc->type) |
| return 0; |
| else |
| return -EINVAL; |
| } |
| |
| static int vidioc_g_ctrl(struct file *file, void *priv, |
| struct v4l2_control *ctrl) |
| { |
| struct em28xx_fh *fh = priv; |
| struct em28xx *dev = fh->dev; |
| int rc; |
| |
| rc = check_dev(dev); |
| if (rc < 0) |
| return rc; |
| rc = 0; |
| |
| mutex_lock(&dev->lock); |
| |
| /* 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) { |
| v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl); |
| rc = 0; |
| } |
| |
| mutex_unlock(&dev->lock); |
| 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; |
| |
| mutex_lock(&dev->lock); |
| |
| /* 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) { |
| 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); |
| } |
| } |
| |
| mutex_unlock(&dev->lock); |
| return rc; |
| } |
| |
| 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"); |
| |
| mutex_lock(&dev->lock); |
| v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); |
| mutex_unlock(&dev->lock); |
| |
| 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; |
| |
| mutex_lock(&dev->lock); |
| v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); |
| mutex_unlock(&dev->lock); |
| |
| 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; |
| |
| mutex_lock(&dev->lock); |
| f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; |
| f->frequency = dev->ctl_freq; |
| mutex_unlock(&dev->lock); |
| |
| 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; |
| |
| mutex_lock(&dev->lock); |
| |
| dev->ctl_freq = f->frequency; |
| v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f); |
| |
| mutex_unlock(&dev->lock); |
| |
| 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: |
| mutex_lock(&dev->lock); |
| ret = em28xx_read_ac97(dev, reg->reg); |
| mutex_unlock(&dev->lock); |
| 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) { |
| mutex_lock(&dev->lock); |
| ret = em28xx_read_reg(dev, reg->reg); |
| mutex_unlock(&dev->lock); |
| |
| if (ret < 0) |
| return ret; |
| |
| reg->val = ret; |
| } else { |
| __le16 val = 0; |
| mutex_lock(&dev->lock); |
| ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, |
| reg->reg, (char *)&val, 2); |
| mutex_unlock(&dev->lock); |
| 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; |
| int rc; |
| |
| switch (reg->match.type) { |
| case V4L2_CHIP_MATCH_AC97: |
| mutex_lock(&dev->lock); |
| rc = em28xx_write_ac97(dev, reg->reg, reg->val); |
| mutex_unlock(&dev->lock); |
| |
| return rc; |
| 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); |
| |
| mutex_lock(&dev->lock); |
| rc = em28xx_write_regs(dev, reg->reg, (char *)&buf, |
| em28xx_reg_len(reg->reg)); |
| mutex_unlock(&dev->lock); |
| |
| return rc; |
| } |
| #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) { |
| videobuf_streamoff(&fh->vb_vidq); |
| res_free(fh, EM28XX_RESOURCE_VIDEO); |
| } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { |
| 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->version = EM28XX_VERSION_CODE; |
| |
| 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; |
| } |
| |
| /* 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; |
| |
| mutex_lock(&dev->lock); |
| |
| f->fmt.sliced.service_set = 0; |
| v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f); |
| |
| if (f->fmt.sliced.service_set == 0) |
| rc = -EINVAL; |
| |
| mutex_unlock(&dev->lock); |
| |
| return rc; |
| } |
| |
| static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct em28xx_fh *fh = priv; |
| struct em28xx *dev = fh->dev; |
| int rc; |
| |
| rc = check_dev(dev); |
| if (rc < 0) |
| return rc; |
| |
| mutex_lock(&dev->lock); |
| v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f); |
| mutex_unlock(&dev->lock); |
| |
| if (f->fmt.sliced.service_set == 0) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| /* RAW VBI ioctls */ |
| |
| static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, |
| struct v4l2_format *format) |
| { |
| format->fmt.vbi.samples_per_line = 720; |
| format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; |
| format->fmt.vbi.offset = 0; |
| format->fmt.vbi.flags = 0; |
| |
| /* Varies by video standard (NTSC, PAL, etc.) */ |
| /* FIXME: hard-coded for NTSC support */ |
| format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; /* FIXME: ??? */ |
| format->fmt.vbi.count[0] = 12; |
| format->fmt.vbi.count[1] = 12; |
| format->fmt.vbi.start[0] = 10; |
| format->fmt.vbi.start[1] = 273; |
| |
| return 0; |
| } |
| |
| static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, |
| struct v4l2_format *format) |
| { |
| format->fmt.vbi.samples_per_line = 720; |
| format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; |
| format->fmt.vbi.offset = 0; |
| format->fmt.vbi.flags = 0; |
| |
| /* Varies by video standard (NTSC, PAL, etc.) */ |
| /* FIXME: hard-coded for NTSC support */ |
| format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; /* FIXME: ??? */ |
| format->fmt.vbi.count[0] = 12; |
| format->fmt.vbi.count[1] = 12; |
| format->fmt.vbi.start[0] = 10; |
| format->fmt.vbi.start[1] = 273; |
| |
| 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 = 17280; |
| 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); |
| } |
| |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
| { |
| struct em28xx_fh *fh = priv; |
| |
| if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
| else |
| return videobuf_cgmbuf(&fh->vb_vbiq, mbuf, 8); |
| } |
| #endif |
| |
| |
| /* ----------------------------------------------------------- */ |
| /* 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->version = EM28XX_VERSION_CODE; |
| 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; |
| |
| mutex_lock(&dev->lock); |
| v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); |
| mutex_unlock(&dev->lock); |
| |
| return 0; |
| } |
| |
| static int radio_enum_input(struct file *file, void *priv, |
| struct v4l2_input *i) |
| { |
| if (i->index != 0) |
| return -EINVAL; |
| strcpy(i->name, "Radio"); |
| i->type = V4L2_INPUT_TYPE_TUNER; |
| |
| return 0; |
| } |
| |
| static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a) |
| { |
| if (unlikely(a->index)) |
| return -EINVAL; |
| |
| strcpy(a->name, "Radio"); |
| return 0; |
| } |
| |
| static int radio_s_tuner(struct file *file, void *priv, |
| struct v4l2_tuner *t) |
| { |
| struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; |
| |
| if (0 != t->index) |
| return -EINVAL; |
| |
| mutex_lock(&dev->lock); |
| v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); |
| mutex_unlock(&dev->lock); |
| |
| return 0; |
| } |
| |
| static int radio_s_audio(struct file *file, void *fh, |
| struct v4l2_audio *a) |
| { |
| return 0; |
| } |
| |
| static int radio_s_input(struct file *file, void *fh, unsigned int i) |
| { |
| return 0; |
| } |
| |
| static int radio_queryctrl(struct file *file, void *priv, |
| struct v4l2_queryctrl *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; |
| } |
| |
| mutex_lock(&dev->lock); |
| |
| em28xx_videodbg("open dev=%s type=%s users=%d\n", |
| video_device_node_name(vdev), v4l2_type_names[fh_type], |
| dev->users); |
| |
| |
| 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); |
| |
| 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); |
| |
| 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); |
| |
| 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); |
| 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_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--; |
| wake_up_interruptible_nr(&dev->open, 1); |
| 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; |
| |
| /* 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)) |
| return -EBUSY; |
| |
| return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, |
| filp->f_flags & O_NONBLOCK); |
| } |
| |
| |
| if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { |
| if (!res_get(fh, EM28XX_RESOURCE_VBI)) |
| return -EBUSY; |
| |
| return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0, |
| filp->f_flags & O_NONBLOCK); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * em28xx_v4l2_poll() |
| * will allocate buffers when called for the first time |
| */ |
| static unsigned int em28xx_v4l2_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; |
| } |
| } |
| |
| /* |
| * 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 (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); |
| |
| 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, |
| .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_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_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 |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| .vidiocgmbuf = vidiocgmbuf, |
| #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, |
| .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; |
| |
| 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; |
| |
| printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n", |
| dev->name, |
| (EM28XX_VERSION_CODE >> 16) & 0xff, |
| (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); |
| |
| /* set default norm */ |
| dev->norm = em28xx_video_template.current_norm; |
| dev->interlaced = EM28XX_INTERLACED_DEFAULT; |
| dev->ctl_input = 0; |
| |
| /* Analog specific initialization */ |
| dev->format = &format[0]; |
| em28xx_set_video_format(dev, format[0].fourcc, |
| norm_maxw(dev), norm_maxh(dev)); |
| |
| video_mux(dev, dev->ctl_input); |
| |
| /* 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; |
| } |