#include <linux/i2c.h>
#include <linux/version.h>
#include <linux/mm.h>
-#include <linux/video_decoder.h>
#include <linux/mutex.h>
#include "em28xx.h"
#define DRIVER_NAME "em28xx"
#define DRIVER_DESC "Empia em28xx based USB video device driver"
-#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
+#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 0)
#define em28xx_videodbg(fmt, arg...) do {\
if (video_debug) \
static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
-static unsigned int vbi_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(card, int, NULL, 0444);
module_param_array(video_nr, int, NULL, 0444);
module_param_array(vbi_nr, int, NULL, 0444);
-MODULE_PARM_DESC(card,"card type");
-MODULE_PARM_DESC(video_nr,"video device numbers");
-MODULE_PARM_DESC(vbi_nr,"vbi device numbers");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(card, "card type");
+MODULE_PARM_DESC(video_nr, "video device numbers");
+MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
+MODULE_PARM_DESC(radio_nr, "radio device numbers");
static unsigned int video_debug = 0;
module_param(video_debug,int,0644);
/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */
static unsigned long em28xx_devused;
-/* supported tv norms */
-static struct em28xx_tvnorm tvnorms[] = {
- {
- .name = "PAL",
- .id = V4L2_STD_PAL,
- .mode = VIDEO_MODE_PAL,
- }, {
- .name = "NTSC",
- .id = V4L2_STD_NTSC,
- .mode = VIDEO_MODE_NTSC,
- }, {
- .name = "SECAM",
- .id = V4L2_STD_SECAM,
- .mode = VIDEO_MODE_SECAM,
- }, {
- .name = "PAL-M",
- .id = V4L2_STD_PAL_M,
- .mode = VIDEO_MODE_PAL,
- }
-};
-
-#define TVNORMS ARRAY_SIZE(tvnorms)
-
/* supported controls */
/* Common to all boards */
static struct v4l2_queryctrl em28xx_qctrl[] = {
/* em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1); clk register */
em28xx_write_regs_req(dev,0x00,0x11,"\x51",1);
- em28xx_audio_usb_mute(dev, 1);
dev->mute = 1; /* maybe not the right place... */
dev->volume = 0x1f;
- em28xx_audio_analog_set(dev);
- em28xx_audio_analog_setup(dev);
+
em28xx_outfmt_set_yuv422(dev);
em28xx_colorlevels_set_default(dev);
em28xx_compression_disable(dev);
static void video_mux(struct em28xx *dev, int index)
{
- int ainput;
struct v4l2_routing route;
route.input = INPUT(index)->vmux;
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
- em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,route.input,dev->ctl_ainput);
-
if (dev->has_msp34xx) {
if (dev->i2s_speed)
em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed);
route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
/* Note: this is msp3400 specific */
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route);
- ainput = EM28XX_AUDIO_SRC_TUNER;
- em28xx_audio_source(dev, ainput);
- } else {
- switch (dev->ctl_ainput) {
- case 0:
- ainput = EM28XX_AUDIO_SRC_TUNER;
- break;
- default:
- ainput = EM28XX_AUDIO_SRC_LINE;
- }
- em28xx_audio_source(dev, ainput);
}
+
+ em28xx_set_audio_source(dev);
}
/* Usage lock check functions */
}
/*
- * em28xx_v4l2_open()
- * inits the device and starts isoc transfer
+ * em28xx_vm_open()
*/
-static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
+static void em28xx_vm_open(struct vm_area_struct *vma)
{
- int minor = iminor(inode);
- int errCode = 0;
- struct em28xx *h,*dev = NULL;
- struct em28xx_fh *fh;
+ struct em28xx_frame_t *f = vma->vm_private_data;
+ f->vma_use_count++;
+}
- list_for_each_entry(h, &em28xx_devlist, devlist) {
- if (h->vdev->minor == minor) {
- dev = h;
- dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- }
- if (h->vbi_dev->minor == minor) {
- dev = h;
- dev->type = V4L2_BUF_TYPE_VBI_CAPTURE;
- }
- }
- if (NULL == dev)
- return -ENODEV;
+/*
+ * em28xx_vm_close()
+ */
+static void em28xx_vm_close(struct vm_area_struct *vma)
+{
+ /* NOTE: buffers are not freed here */
+ struct em28xx_frame_t *f = vma->vm_private_data;
- em28xx_videodbg("open minor=%d type=%s users=%d\n",
- minor,v4l2_type_names[dev->type],dev->users);
+ if (f->vma_use_count)
+ f->vma_use_count--;
+}
- fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
+static struct vm_operations_struct em28xx_vm_ops = {
+ .open = em28xx_vm_open,
+ .close = em28xx_vm_close,
+};
- if (!fh) {
- em28xx_errdev("em28xx-video.c: Out of memory?!\n");
- return -ENOMEM;
+
+/*
+ * em28xx_get_ctrl()
+ * return the current saturation, brightness or contrast, mute state
+ */
+static int em28xx_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:
+ return -EINVAL;
}
- mutex_lock(&dev->lock);
- fh->dev = dev;
- filp->private_data = fh;
+}
- if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
- em28xx_set_alternate(dev);
+/*
+ * em28xx_set_ctrl()
+ * mute or set new saturation, brightness or contrast
+ */
+static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ if (ctrl->value != dev->mute) {
+ dev->mute = ctrl->value;
+ return em28xx_audio_analog_set(dev);
+ }
+ return 0;
+ case V4L2_CID_AUDIO_VOLUME:
+ dev->volume = ctrl->value;
+ return em28xx_audio_analog_set(dev);
+ default:
+ return -EINVAL;
+ }
+}
- dev->width = norm_maxw(dev);
- dev->height = norm_maxh(dev);
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
- dev->hscale = 0;
- dev->vscale = 0;
+/*
+ * em28xx_stream_interrupt()
+ * stops streaming
+ */
+static int em28xx_stream_interrupt(struct em28xx *dev)
+{
+ int rc = 0;
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
+ /* stop reading from the device */
+ dev->stream = STREAM_INTERRUPT;
+ rc = wait_event_timeout(dev->wait_stream,
+ (dev->stream == STREAM_OFF) ||
+ (dev->state & DEV_DISCONNECTED),
+ EM28XX_URB_TIMEOUT);
- /* start the transfer */
- errCode = em28xx_init_isoc(dev);
- if (errCode)
- goto err;
+ if (rc) {
+ dev->state |= DEV_MISCONFIGURED;
+ em28xx_videodbg("device is misconfigured; close and "
+ "open /dev/video%d again\n",
+ dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
+ return rc;
+ }
- em28xx_empty_framequeues(dev);
+ return 0;
+}
+
+
+static int check_dev(struct em28xx *dev)
+{
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_errdev("v4l2 ioctl: device not present\n");
+ return -ENODEV;
}
- dev->users++;
+ if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_errdev("v4l2 ioctl: device is misconfigured; "
+ "close and open it again\n");
+ return -EIO;
+ }
+ return 0;
+}
-err:
- mutex_unlock(&dev->lock);
- return errCode;
+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;
}
-/*
- * em28xx_realease_resources()
- * unregisters the v4l2,i2c and usb devices
- * called when the device gets disconected or at module unload
-*/
-static void em28xx_release_resources(struct em28xx *dev)
+/* ------------------------------------------------------------------
+ IOCTL vidioc handling
+ ------------------------------------------------------------------*/
+
+static int vidioc_g_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
- /*FIXME: I2C IR should be disconnected */
+ mutex_lock(&dev->lock);
- em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
- dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
- dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
- list_del(&dev->devlist);
- video_unregister_device(dev->vdev);
- video_unregister_device(dev->vbi_dev);
- em28xx_i2c_unregister(dev);
- usb_put_dev(dev->udev);
+ f->fmt.pix.width = dev->width;
+ f->fmt.pix.height = dev->height;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
+ f->fmt.pix.bytesperline = dev->bytesperline;
+ f->fmt.pix.sizeimage = dev->frame_size;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
+ f->fmt.pix.field = dev->interlaced ?
+ V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
- /* Mark device as unused */
- em28xx_devused&=~(1<<dev->devno);
+ mutex_unlock(&dev->lock);
+ return 0;
}
-/*
- * em28xx_v4l2_close()
- * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
- */
-static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
+static int vidioc_try_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
{
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
- int errCode;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int width = f->fmt.pix.width;
+ int height = f->fmt.pix.height;
+ unsigned int maxw = norm_maxw(dev);
+ unsigned int maxh = norm_maxh(dev);
+ unsigned int hscale, vscale;
+
+ /* width must even because of the YUYV format
+ height must be even because of interlacing */
+ height &= 0xfffe;
+ width &= 0xfffe;
- em28xx_videodbg("users=%d\n", dev->users);
+ if (height < 32)
+ height = 32;
+ if (height > maxh)
+ height = maxh;
+ if (width < 48)
+ width = 48;
+ if (width > maxw)
+ width = maxw;
+ mutex_lock(&dev->lock);
- if (res_check(fh))
- res_free(fh);
+ if (dev->is_em2800) {
+ /* the em2800 can only scale down to 50% */
+ if (height % (maxh / 2))
+ height = maxh;
+ if (width % (maxw / 2))
+ width = maxw;
+ /* according to empiatech support */
+ /* the MaxPacketSize is to small to support */
+ /* framesizes larger than 640x480 @ 30 fps */
+ /* or 640x576 @ 25 fps. As this would cut */
+ /* of a part of the image we prefer */
+ /* 360x576 or 360x480 for now */
+ if (width == maxw && height == maxh)
+ width /= 2;
+ }
- mutex_lock(&dev->lock);
+ get_scale(dev, width, height, &hscale, &vscale);
- if (dev->users == 1) {
- em28xx_uninit_isoc(dev);
- em28xx_release_buffers(dev);
- dev->io = IO_NONE;
+ width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+ height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
- /* the device is already disconnect,
- free the remaining resources */
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_release_resources(dev);
- mutex_unlock(&dev->lock);
- kfree(dev);
- return 0;
- }
+ f->fmt.pix.width = width;
+ f->fmt.pix.height = height;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
+ f->fmt.pix.bytesperline = width * 2;
+ f->fmt.pix.sizeimage = width * 2 * height;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ f->fmt.pix.field = V4L2_FIELD_INTERLACED;
- /* 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);
- }
- }
- kfree(fh);
- dev->users--;
- wake_up_interruptible_nr(&dev->open, 1);
mutex_unlock(&dev->lock);
return 0;
}
-/*
- * em28xx_v4l2_read()
- * will allocate buffers when called for the first time
- */
-static ssize_t
-em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
- loff_t * f_pos)
+static int vidioc_s_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
{
- struct em28xx_frame_t *f, *i;
- unsigned long lock_flags;
- int ret = 0;
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc, i;
- /* FIXME: read() is not prepared to allow changing the video
- resolution while streaming. Seems a bug at em28xx_set_fmt
- */
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if (unlikely(res_get(fh) < 0))
- return -EBUSY;
+ vidioc_try_fmt_cap(file, priv, f);
mutex_lock(&dev->lock);
- if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
- em28xx_videodbg("V4l2_Buf_type_videocapture is set\n");
-
- if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n");
- em28xx_videodbg("not supported yet! ...\n");
- if (copy_to_user(buf, "", 1)) {
- mutex_unlock(&dev->lock);
- return -EFAULT;
+ for (i = 0; i < dev->num_frames; i++)
+ if (dev->frame[i].vma_use_count) {
+ em28xx_videodbg("VIDIOC_S_FMT failed. "
+ "Unmap the buffers first.\n");
+ rc = -EINVAL;
+ goto err;
}
- mutex_unlock(&dev->lock);
- return (1);
- }
- if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
- em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n");
- em28xx_videodbg("not supported yet! ...\n");
- if (copy_to_user(buf, "", 1)) {
- mutex_unlock(&dev->lock);
- return -EFAULT;
- }
- mutex_unlock(&dev->lock);
- return (1);
- }
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("device not present\n");
- mutex_unlock(&dev->lock);
- return -ENODEV;
+ /* stop io in case it is already in progress */
+ if (dev->stream == STREAM_ON) {
+ em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n");
+ rc = em28xx_stream_interrupt(dev);
+ if (rc < 0)
+ goto err;
}
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg("device misconfigured; close and open it again\n");
- mutex_unlock(&dev->lock);
- return -EIO;
- }
+ em28xx_release_buffers(dev);
+ dev->io = IO_NONE;
- if (dev->io == IO_MMAP) {
- em28xx_videodbg ("IO method is set to mmap; close and open"
- " the device again to choose the read method\n");
- mutex_unlock(&dev->lock);
+ /* set new image size */
+ dev->width = f->fmt.pix.width;
+ dev->height = f->fmt.pix.height;
+ dev->frame_size = dev->width * dev->height * 2;
+ dev->field_size = dev->frame_size >> 1;
+ dev->bytesperline = dev->width * 2;
+ get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
+
+ /* FIXME: This is really weird! Why capture is starting with
+ this ioctl ???
+ */
+ em28xx_uninit_isoc(dev);
+ em28xx_set_alternate(dev);
+ em28xx_capture_start(dev, 1);
+ em28xx_resolution_set(dev);
+ em28xx_init_isoc(dev);
+ rc = 0;
+
+err:
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+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;
+ mutex_unlock(&dev->lock);
+
+ /* Adjusts width/height, if needed */
+ f.fmt.pix.width = dev->width;
+ f.fmt.pix.height = dev->height;
+ vidioc_try_fmt_cap(file, priv, &f);
+
+ mutex_lock(&dev->lock);
+
+ /* set new image size */
+ dev->width = f.fmt.pix.width;
+ dev->height = f.fmt.pix.height;
+ dev->frame_size = dev->width * dev->height * 2;
+ dev->field_size = dev->frame_size >> 1;
+ dev->bytesperline = dev->width * 2;
+ get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
+
+ em28xx_resolution_set(dev);
+ em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+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;
+
+ mutex_lock(&dev->lock);
+
+ video_mux(dev, i);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ unsigned int index = a->index;
+
+ if (a->index > 1)
+ return -EINVAL;
+
+ index = dev->ctl_ainput;
+
+ if (index == 0) {
+ strcpy(a->name, "Television");
+ } else {
+ strcpy(a->name, "Line In");
}
+ a->capability = V4L2_AUDCAP_STEREO;
+ a->index = index;
- if (dev->io == IO_NONE) {
- if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
- em28xx_errdev("read failed, not enough memory\n");
- mutex_unlock(&dev->lock);
- return -ENOMEM;
+ 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 (a->index != dev->ctl_ainput)
+ return -EINVAL;
+
+ 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 i;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ memset(qc, 0, sizeof(*qc));
+
+ qc->id = id;
+
+ if (!dev->has_msp34xx) {
+ for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
+ if (qc->id && qc->id == em28xx_qctrl[i].id) {
+ memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
+ return 0;
+ }
}
- dev->io = IO_READ;
- dev->stream = STREAM_ON;
- em28xx_queue_unusedframes(dev);
}
+ mutex_lock(&dev->lock);
+ em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc);
+ mutex_unlock(&dev->lock);
- if (!count) {
- 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;
+ mutex_lock(&dev->lock);
+
+ if (!dev->has_msp34xx)
+ rc = em28xx_get_ctrl(dev, ctrl);
+ else
+ rc = -EINVAL;
+
+ if (rc == -EINVAL) {
+ em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl);
+ rc = 0;
}
- if (list_empty(&dev->outqueue)) {
- if (filp->f_flags & O_NONBLOCK) {
- mutex_unlock(&dev->lock);
- return -EAGAIN;
- }
- ret = wait_event_interruptible
- (dev->wait_frame,
- (!list_empty(&dev->outqueue)) ||
- (dev->state & DEV_DISCONNECTED));
- if (ret) {
- mutex_unlock(&dev->lock);
- return ret;
- }
- if (dev->state & DEV_DISCONNECTED) {
- mutex_unlock(&dev->lock);
- return -ENODEV;
+ 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;
+ u8 i;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&dev->lock);
+
+ if (dev->has_msp34xx)
+ em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
+ else {
+ rc = 1;
+ for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
+ if (ctrl->id == em28xx_qctrl[i].id) {
+ if (ctrl->value < em28xx_qctrl[i].minimum ||
+ ctrl->value > em28xx_qctrl[i].maximum) {
+ rc = -ERANGE;
+ break;
+ }
+
+ rc = em28xx_set_ctrl(dev, ctrl);
+ break;
+ }
}
- dev->video_bytesread = 0;
}
- f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
+ /* Control not found - try to send it to the attached devices */
+ if (rc == 1) {
+ em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
+ rc = 0;
+ }
- em28xx_queue_unusedframes(dev);
+ mutex_unlock(&dev->lock);
+ return rc;
+}
- if (count > f->buf.length)
- count = f->buf.length;
+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;
- if ((dev->video_bytesread + count) > dev->frame_size)
- count = dev->frame_size - dev->video_bytesread;
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if (copy_to_user(buf, f->bufmem+dev->video_bytesread, count)) {
- em28xx_err("Error while copying to user\n");
- return -EFAULT;
- }
- dev->video_bytesread += count;
+ if (0 != t->index)
+ return -EINVAL;
- if (dev->video_bytesread == dev->frame_size) {
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- list_for_each_entry(i, &dev->outqueue, frame)
- i->state = F_UNUSED;
- INIT_LIST_HEAD(&dev->outqueue);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+ strcpy(t->name, "Tuner");
- em28xx_queue_unusedframes(dev);
- dev->video_bytesread = 0;
- }
+ mutex_lock(&dev->lock);
- *f_pos += count;
+ em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
mutex_unlock(&dev->lock);
+ return 0;
+}
- return count;
+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);
+
+ em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
+
+ mutex_unlock(&dev->lock);
+ 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)
+static int vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
{
- unsigned int mask = 0;
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
- if (unlikely(res_get(fh) < 0))
- return POLLERR;
+ f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
+ f->frequency = dev->ctl_freq;
+
+ return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (0 != f->tuner)
+ return -EINVAL;
+
+ if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
+ return -EINVAL;
+ if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
+ return -EINVAL;
mutex_lock(&dev->lock);
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("device not present\n");
- } else if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg("device is misconfigured; close and open it again\n");
- } else {
- if (dev->io == IO_NONE) {
- if (!em28xx_request_buffers
- (dev, EM28XX_NUM_READ_FRAMES)) {
- em28xx_warn
- ("poll() failed, not enough memory\n");
- } else {
- dev->io = IO_READ;
- dev->stream = STREAM_ON;
- }
- }
+ dev->ctl_freq = f->frequency;
+ em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
- if (dev->io == IO_READ) {
- em28xx_queue_unusedframes(dev);
- poll_wait(filp, &dev->wait_frame, wait);
+ mutex_unlock(&dev->lock);
+ return 0;
+}
- if (!list_empty(&dev->outqueue))
- mask |= POLLIN | POLLRDNORM;
+static int vidioc_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *cc)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
- mutex_unlock(&dev->lock);
+ if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
- return mask;
+ 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;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP)
+ return -EINVAL;
+
+ if (list_empty(&dev->inqueue))
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ if (unlikely(res_get(fh) < 0)) {
+ mutex_unlock(&dev->lock);
+ return -EBUSY;
+ }
+
+ dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+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 (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ if (dev->stream == STREAM_ON) {
+ em28xx_videodbg("VIDIOC_STREAMOFF: interrupting stream\n");
+ rc = em28xx_stream_interrupt(dev);
+ if (rc < 0) {
+ mutex_unlock(&dev->lock);
+ return rc;
}
}
+ em28xx_empty_framequeues(dev);
+
mutex_unlock(&dev->lock);
- return POLLERR;
+ return 0;
}
-/*
- * em28xx_vm_open()
- */
-static void em28xx_vm_open(struct vm_area_struct *vma)
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
{
- struct em28xx_frame_t *f = vma->vm_private_data;
- f->vma_use_count++;
+ 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));
+ strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
+
+ cap->version = EM28XX_VERSION_CODE;
+
+ cap->capabilities =
+ V4L2_CAP_SLICED_VBI_CAPTURE |
+ V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_AUDIO |
+ V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+
+ if (dev->has_tuner)
+ cap->capabilities |= V4L2_CAP_TUNER;
+
+ return 0;
}
-/*
- * em28xx_vm_close()
- */
-static void em28xx_vm_close(struct vm_area_struct *vma)
+static int vidioc_enum_fmt_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmtd)
{
- /* NOTE: buffers are not freed here */
- struct em28xx_frame_t *f = vma->vm_private_data;
+ if (fmtd->index != 0)
+ return -EINVAL;
- if (f->vma_use_count)
- f->vma_use_count--;
+ fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ strcpy(fmtd->description, "Packed YUY2");
+ fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
+ memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
+
+ return 0;
}
-static struct vm_operations_struct em28xx_vm_ops = {
- .open = em28xx_vm_open,
- .close = em28xx_vm_close,
-};
+/* Sliced VBI ioctls */
+static int vidioc_g_fmt_vbi_capture(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
-/*
- * em28xx_v4l2_mmap()
- */
-static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&dev->lock);
+
+ f->fmt.sliced.service_set = 0;
+
+ em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
+
+ if (f->fmt.sliced.service_set == 0)
+ rc = -EINVAL;
+
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_try_set_vbi_capture(struct file *file, void *priv,
+ struct v4l2_format *f)
{
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
- unsigned long size = vma->vm_end - vma->vm_start;
- unsigned long start = vma->vm_start;
- void *pos;
- u32 i;
+ 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);
+ em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
+ mutex_unlock(&dev->lock);
+
+ if (f->fmt.sliced.service_set == 0)
+ return -EINVAL;
- if (unlikely(res_get(fh) < 0))
- return -EBUSY;
+ return 0;
+}
- mutex_lock(&dev->lock);
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("mmap: device not present\n");
- mutex_unlock(&dev->lock);
- return -ENODEV;
- }
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ u32 i;
+ int rc;
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg ("mmap: Device is misconfigured; close and "
- "open it again\n");
- mutex_unlock(&dev->lock);
- return -EIO;
- }
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
- size != PAGE_ALIGN(dev->frame[0].buf.length)) {
- mutex_unlock(&dev->lock);
+ if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+ rb->memory != V4L2_MEMORY_MMAP)
return -EINVAL;
- }
- for (i = 0; i < dev->num_frames; i++) {
- if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
- break;
- }
- if (i == dev->num_frames) {
- em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
- mutex_unlock(&dev->lock);
+ if (dev->io == IO_READ) {
+ em28xx_videodbg("method is set to read;"
+ " close and open the device again to"
+ " choose the mmap I/O method\n");
return -EINVAL;
}
- /* VM_IO is eventually going to replace PageReserved altogether */
- vma->vm_flags |= VM_IO;
- vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
+ for (i = 0; i < dev->num_frames; i++)
+ if (dev->frame[i].vma_use_count) {
+ em28xx_videodbg("VIDIOC_REQBUFS failed; "
+ "previous buffers are still mapped\n");
+ return -EINVAL;
+ }
- pos = dev->frame[i].bufmem;
- while (size > 0) { /* size is page-aligned */
- if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
- em28xx_videodbg("mmap: vm_insert_page failed\n");
+ mutex_lock(&dev->lock);
+
+ if (dev->stream == STREAM_ON) {
+ em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
+ rc = em28xx_stream_interrupt(dev);
+ if (rc < 0) {
mutex_unlock(&dev->lock);
- return -EAGAIN;
+ return rc;
}
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- size -= PAGE_SIZE;
}
- vma->vm_ops = &em28xx_vm_ops;
- vma->vm_private_data = &dev->frame[i];
+ em28xx_empty_framequeues(dev);
+
+ em28xx_release_buffers(dev);
+ if (rb->count)
+ rb->count = em28xx_request_buffers(dev, rb->count);
+
+ dev->frame_current = NULL;
+ dev->io = rb->count ? IO_MMAP : IO_NONE;
- em28xx_vm_open(vma);
mutex_unlock(&dev->lock);
return 0;
}
-/*
- * em28xx_get_ctrl()
- * return the current saturation, brightness or contrast, mute state
- */
-static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
+static int vidioc_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *b)
{
- 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:
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+ b->index >= dev->num_frames || dev->io != IO_MMAP)
return -EINVAL;
- }
+
+ mutex_lock(&dev->lock);
+
+ memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
+
+ if (dev->frame[b->index].vma_use_count)
+ b->flags |= V4L2_BUF_FLAG_MAPPED;
+
+ if (dev->frame[b->index].state == F_DONE)
+ b->flags |= V4L2_BUF_FLAG_DONE;
+ else if (dev->frame[b->index].state != F_UNUSED)
+ b->flags |= V4L2_BUF_FLAG_QUEUED;
+
+ mutex_unlock(&dev->lock);
+ return 0;
}
-/*
- * em28xx_set_ctrl()
- * mute or set new saturation, brightness or contrast
- */
-static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value != dev->mute) {
- dev->mute = ctrl->value;
- em28xx_audio_usb_mute(dev, ctrl->value);
- return em28xx_audio_analog_set(dev);
- }
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- dev->volume = ctrl->value;
- return em28xx_audio_analog_set(dev);
- default:
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ unsigned long lock_flags;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP ||
+ b->index >= dev->num_frames)
return -EINVAL;
- }
+
+ if (dev->frame[b->index].state != F_UNUSED)
+ return -EAGAIN;
+
+ dev->frame[b->index].state = F_QUEUED;
+
+ /* add frame to fifo */
+ spin_lock_irqsave(&dev->queue_lock, lock_flags);
+ list_add_tail(&dev->frame[b->index].frame, &dev->inqueue);
+ spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+
+ return 0;
}
-/*
- * em28xx_stream_interrupt()
- * stops streaming
- */
-static int em28xx_stream_interrupt(struct em28xx *dev)
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
- int ret = 0;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+ struct em28xx_frame_t *f;
+ unsigned long lock_flags;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- /* stop reading from the device */
+ if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP)
+ return -EINVAL;
- dev->stream = STREAM_INTERRUPT;
- ret = wait_event_timeout(dev->wait_stream,
- (dev->stream == STREAM_OFF) ||
- (dev->state & DEV_DISCONNECTED),
- EM28XX_URB_TIMEOUT);
- if (dev->state & DEV_DISCONNECTED)
- return -ENODEV;
- else if (ret) {
- dev->state |= DEV_MISCONFIGURED;
- em28xx_videodbg("device is misconfigured; close and "
- "open /dev/video%d again\n",
- dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
- return ret;
+ if (list_empty(&dev->outqueue)) {
+ if (dev->stream == STREAM_OFF)
+ return -EINVAL;
+
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ rc = wait_event_interruptible(dev->wait_frame,
+ (!list_empty(&dev->outqueue)) ||
+ (dev->state & DEV_DISCONNECTED));
+ if (rc)
+ return rc;
+
+ if (dev->state & DEV_DISCONNECTED)
+ return -ENODEV;
}
+ spin_lock_irqsave(&dev->queue_lock, lock_flags);
+ f = list_entry(dev->outqueue.next, struct em28xx_frame_t, frame);
+ list_del(dev->outqueue.next);
+ spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+
+ f->state = F_UNUSED;
+ memcpy(b, &f->buf, sizeof(*b));
+
+ if (f->vma_use_count)
+ b->flags |= V4L2_BUF_FLAG_MAPPED;
+
return 0;
}
-static int em28xx_set_norm(struct em28xx *dev, int width, int height)
+/* ----------------------------------------------------------- */
+/* RADIO ESPECIFIC IOCTLS */
+/* ----------------------------------------------------------- */
+
+static int radio_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
{
- unsigned int hscale, vscale;
- unsigned int maxh, maxw;
+ struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
+ strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
+ strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
+ strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
- /* width must even because of the YUYV format */
- /* height must be even because of interlacing */
- height &= 0xfffe;
- width &= 0xfffe;
+ cap->version = EM28XX_VERSION_CODE;
+ cap->capabilities = V4L2_CAP_TUNER;
+ return 0;
+}
- if (height < 32)
- height = 32;
- if (height > maxh)
- height = maxh;
- if (width < 48)
- width = 48;
- if (width > maxw)
- width = maxw;
+static int radio_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
- if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
- hscale = 0x3fff;
- width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+ if (unlikely(t->index > 0))
+ return -EINVAL;
- if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
- vscale = 0x3fff;
- height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
+ strcpy(t->name, "Radio");
+ t->type = V4L2_TUNER_RADIO;
- /* set new image size */
- dev->width = width;
- dev->height = height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
- dev->hscale = hscale;
- dev->vscale = vscale;
+ em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
+ return 0;
+}
- em28xx_resolution_set(dev);
+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 em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format)
+static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
{
- em28xx_videodbg("VIDIOC_G_FMT: type=%s\n",
- (format->type ==V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
- "V4L2_BUF_TYPE_VIDEO_CAPTURE" :
- (format->type ==V4L2_BUF_TYPE_VBI_CAPTURE) ?
- "V4L2_BUF_TYPE_VBI_CAPTURE" :
- (format->type ==V4L2_CAP_SLICED_VBI_CAPTURE) ?
- "V4L2_BUF_TYPE_SLICED_VBI_CAPTURE " :
- "not supported");
+ if (unlikely(a->index))
+ return -EINVAL;
- switch (format->type) {
- case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- {
- format->fmt.pix.width = dev->width;
- format->fmt.pix.height = dev->height;
- format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
- format->fmt.pix.bytesperline = dev->bytesperline;
- format->fmt.pix.sizeimage = dev->frame_size;
- format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
- format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
+ strcpy(a->name, "Radio");
+ return 0;
+}
- em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
- dev->height);
- break;
- }
+static int radio_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
- case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
- {
- format->fmt.sliced.service_set=0;
+ if (0 != t->index)
+ return -EINVAL;
- em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
+ em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
- if (format->fmt.sliced.service_set==0)
- return -EINVAL;
+ return 0;
+}
- break;
- }
+static int radio_s_audio(struct file *file, void *fh,
+ struct v4l2_audio *a)
+{
+ return 0;
+}
- default:
+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(em28xx_qctrl); i++) {
+ if (qc->id && qc->id == em28xx_qctrl[i].id) {
+ memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
+ return 0;
+ }
}
- return (0);
+
+ return -EINVAL;
}
-static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format)
+/*
+ * em28xx_v4l2_open()
+ * inits the device and starts isoc transfer
+ */
+static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
{
- u32 i;
- int ret = 0;
- int width = format->fmt.pix.width;
- int height = format->fmt.pix.height;
- unsigned int hscale, vscale;
- unsigned int maxh, maxw;
-
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
+ int minor = iminor(inode);
+ int errCode = 0, radio = 0;
+ struct em28xx *h,*dev = NULL;
+ struct em28xx_fh *fh;
- em28xx_videodbg("%s: type=%s\n",
- cmd == VIDIOC_TRY_FMT ?
- "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT",
- format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ?
- "V4L2_BUF_TYPE_VIDEO_CAPTURE" :
- format->type == V4L2_BUF_TYPE_VBI_CAPTURE ?
- "V4L2_BUF_TYPE_VBI_CAPTURE " :
- "not supported");
+ list_for_each_entry(h, &em28xx_devlist, devlist) {
+ if (h->vdev->minor == minor) {
+ dev = h;
+ dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ }
+ if (h->vbi_dev->minor == minor) {
+ dev = h;
+ dev->type = V4L2_BUF_TYPE_VBI_CAPTURE;
+ }
+ if (h->radio_dev &&
+ h->radio_dev->minor == minor) {
+ radio = 1;
+ dev = h;
+ }
+ }
+ if (NULL == dev)
+ return -ENODEV;
- if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
- em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
+ em28xx_videodbg("open minor=%d type=%s users=%d\n",
+ minor,v4l2_type_names[dev->type],dev->users);
- if (format->fmt.sliced.service_set==0)
- return -EINVAL;
+ fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
- return 0;
+ if (!fh) {
+ em28xx_errdev("em28xx-video.c: Out of memory?!\n");
+ return -ENOMEM;
}
+ mutex_lock(&dev->lock);
+ fh->dev = dev;
+ fh->radio = radio;
+ filp->private_data = fh;
+
+ if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
+ em28xx_set_alternate(dev);
+ dev->width = norm_maxw(dev);
+ dev->height = norm_maxh(dev);
+ dev->frame_size = dev->width * dev->height * 2;
+ dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
+ dev->bytesperline = dev->width * 2;
+ dev->hscale = 0;
+ dev->vscale = 0;
- if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
+ em28xx_capture_start(dev, 1);
+ em28xx_resolution_set(dev);
- em28xx_videodbg("%s: requested %dx%d\n",
- cmd == VIDIOC_TRY_FMT ?
- "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT",
- format->fmt.pix.width, format->fmt.pix.height);
- /* FIXME: Move some code away from here */
- /* width must even because of the YUYV format */
- /* height must be even because of interlacing */
- height &= 0xfffe;
- width &= 0xfffe;
+ /* start the transfer */
+ errCode = em28xx_init_isoc(dev);
+ if (errCode)
+ goto err;
+
+ em28xx_empty_framequeues(dev);
+ }
+ if (fh->radio) {
+ em28xx_videodbg("video_open: setting radio device\n");
+ em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL);
+ }
+
+ dev->users++;
+
+err:
+ 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
+*/
+static void em28xx_release_resources(struct em28xx *dev)
+{
- if (height < 32)
- height = 32;
- if (height > maxh)
- height = maxh;
- if (width < 48)
- width = 48;
- if (width > maxw)
- width = maxw;
+ /*FIXME: I2C IR should be disconnected */
- if(dev->is_em2800){
- /* the em2800 can only scale down to 50% */
- if(height % (maxh / 2))
- height=maxh;
- if(width % (maxw / 2))
- width=maxw;
- /* according to empiatech support */
- /* the MaxPacketSize is to small to support */
- /* framesizes larger than 640x480 @ 30 fps */
- /* or 640x576 @ 25 fps. As this would cut */
- /* of a part of the image we prefer */
- /* 360x576 or 360x480 for now */
- if(width == maxw && height == maxh)
- width /= 2;
+ em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
+ dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
+ dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
+ list_del(&dev->devlist);
+ if (dev->radio_dev) {
+ if (-1 != dev->radio_dev->minor)
+ video_unregister_device(dev->radio_dev);
+ else
+ video_device_release(dev->radio_dev);
+ dev->radio_dev = NULL;
+ }
+ if (dev->vbi_dev) {
+ if (-1 != dev->vbi_dev->minor)
+ video_unregister_device(dev->vbi_dev);
+ else
+ video_device_release(dev->vbi_dev);
+ dev->vbi_dev = NULL;
}
+ if (dev->vdev) {
+ if (-1 != dev->vdev->minor)
+ video_unregister_device(dev->vdev);
+ else
+ video_device_release(dev->vdev);
+ dev->vdev = NULL;
+ }
+ em28xx_i2c_unregister(dev);
+ usb_put_dev(dev->udev);
- if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
- hscale = 0x3fff;
+ /* Mark device as unused */
+ em28xx_devused&=~(1<<dev->devno);
+}
- width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+/*
+ * em28xx_v4l2_close()
+ * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
+ */
+static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
+{
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ int errCode;
- if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
- vscale = 0x3fff;
+ em28xx_videodbg("users=%d\n", dev->users);
- height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
- format->fmt.pix.width = width;
- format->fmt.pix.height = height;
- format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
- format->fmt.pix.bytesperline = width * 2;
- format->fmt.pix.sizeimage = width * 2 * height;
- format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
- format->fmt.pix.field = V4L2_FIELD_INTERLACED;
+ if (res_check(fh))
+ res_free(fh);
- em28xx_videodbg("%s: returned %dx%d (%d, %d)\n",
- cmd == VIDIOC_TRY_FMT ?
- "VIDIOC_TRY_FMT" :"VIDIOC_S_FMT",
- format->fmt.pix.width, format->fmt.pix.height, hscale, vscale);
+ mutex_lock(&dev->lock);
- if (cmd == VIDIOC_TRY_FMT)
- return 0;
+ if (dev->users == 1) {
+ em28xx_uninit_isoc(dev);
+ em28xx_release_buffers(dev);
+ dev->io = IO_NONE;
- for (i = 0; i < dev->num_frames; i++)
- if (dev->frame[i].vma_use_count) {
- em28xx_videodbg("VIDIOC_S_FMT failed. "
- "Unmap the buffers first.\n");
- return -EINVAL;
+ /* the device is already disconnect,
+ free the remaining resources */
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_release_resources(dev);
+ mutex_unlock(&dev->lock);
+ kfree(dev);
+ return 0;
}
- /* stop io in case it is already in progress */
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
+ /* 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);
+ }
}
-
- em28xx_release_buffers(dev);
- dev->io = IO_NONE;
-
- /* set new image size */
- dev->width = width;
- dev->height = height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1;
- dev->bytesperline = dev->width * 2;
- dev->hscale = hscale;
- dev->vscale = vscale;
- em28xx_uninit_isoc(dev);
- em28xx_set_alternate(dev);
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
- em28xx_init_isoc(dev);
-
+ kfree(fh);
+ dev->users--;
+ wake_up_interruptible_nr(&dev->open, 1);
+ mutex_unlock(&dev->lock);
return 0;
}
/*
- * em28xx_v4l2_do_ioctl()
- * This function is _not_ called directly, but from
- * em28xx_v4l2_ioctl. Userspace
- * copying is done already, arg is a kernel pointer.
+ * em28xx_v4l2_read()
+ * will allocate buffers when called for the first time
*/
-static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
- struct em28xx *dev, unsigned int cmd, void *arg,
- v4l2_kioctl driver_ioctl)
+static ssize_t
+em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
+ loff_t * f_pos)
{
+ struct em28xx_frame_t *f, *i;
+ unsigned long lock_flags;
+ int ret = 0;
struct em28xx_fh *fh = filp->private_data;
- int ret;
-
- switch (cmd) {
- /* ---------- tv norms ---------- */
- case VIDIOC_ENUMSTD:
- {
- struct v4l2_standard *e = arg;
- unsigned int i;
-
- i = e->index;
- if (i >= TVNORMS)
- return -EINVAL;
- ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
- tvnorms[e->index].name);
- e->index = i;
- if (ret < 0)
- return ret;
- return 0;
- }
- case VIDIOC_G_STD:
- {
- v4l2_std_id *id = arg;
-
- *id = dev->tvnorm->id;
- return 0;
- }
- case VIDIOC_S_STD:
- {
- v4l2_std_id *id = arg;
- unsigned int i;
+ struct em28xx *dev = fh->dev;
- for (i = 0; i < TVNORMS; i++)
- if (*id == tvnorms[i].id)
- break;
- if (i == TVNORMS)
- for (i = 0; i < TVNORMS; i++)
- if (*id & tvnorms[i].id)
- break;
- if (i == TVNORMS)
- return -EINVAL;
+ /* FIXME: read() is not prepared to allow changing the video
+ resolution while streaming. Seems a bug at em28xx_set_fmt
+ */
- mutex_lock(&dev->lock);
- dev->tvnorm = &tvnorms[i];
+ if (unlikely(res_get(fh) < 0))
+ return -EBUSY;
- em28xx_set_norm(dev, dev->width, dev->height);
+ mutex_lock(&dev->lock);
- em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
- &dev->tvnorm->id);
+ if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ em28xx_videodbg("V4l2_Buf_type_videocapture is set\n");
+ if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
+ em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n");
+ em28xx_videodbg("not supported yet! ...\n");
+ if (copy_to_user(buf, "", 1)) {
+ mutex_unlock(&dev->lock);
+ return -EFAULT;
+ }
mutex_unlock(&dev->lock);
-
- return 0;
+ return (1);
}
-
- /* ------ input switching ---------- */
- case VIDIOC_ENUMINPUT:
- {
- struct v4l2_input *i = arg;
- unsigned int n;
- 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",
- };
-
- n = i->index;
- if (n >= MAX_EM28XX_INPUT)
- return -EINVAL;
- if (0 == INPUT(n)->type)
- return -EINVAL;
- memset(i, 0, sizeof(*i));
- 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;
- for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
- i->std |= tvnorms[n].id;
- return 0;
+ if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
+ em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n");
+ em28xx_videodbg("not supported yet! ...\n");
+ if (copy_to_user(buf, "", 1)) {
+ mutex_unlock(&dev->lock);
+ return -EFAULT;
+ }
+ mutex_unlock(&dev->lock);
+ return (1);
}
- case VIDIOC_G_INPUT:
- {
- int *i = arg;
- *i = dev->ctl_input;
- return 0;
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_videodbg("device not present\n");
+ mutex_unlock(&dev->lock);
+ return -ENODEV;
}
- case VIDIOC_S_INPUT:
- {
- int *index = arg;
-
- if (*index >= MAX_EM28XX_INPUT)
- return -EINVAL;
- if (0 == INPUT(*index)->type)
- return -EINVAL;
- mutex_lock(&dev->lock);
- video_mux(dev, *index);
+ if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_videodbg("device misconfigured; close and open it again\n");
mutex_unlock(&dev->lock);
-
- return 0;
+ return -EIO;
}
- case VIDIOC_G_AUDIO:
- {
- struct v4l2_audio *a = arg;
- unsigned int index = a->index;
- if (a->index > 1)
- return -EINVAL;
- memset(a, 0, sizeof(*a));
- index = dev->ctl_ainput;
+ if (dev->io == IO_MMAP) {
+ em28xx_videodbg ("IO method is set to mmap; close and open"
+ " the device again to choose the read method\n");
+ mutex_unlock(&dev->lock);
+ return -EINVAL;
+ }
- if (index == 0) {
- strcpy(a->name, "Television");
- } else {
- strcpy(a->name, "Line In");
+ if (dev->io == IO_NONE) {
+ if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
+ em28xx_errdev("read failed, not enough memory\n");
+ mutex_unlock(&dev->lock);
+ return -ENOMEM;
}
- a->capability = V4L2_AUDCAP_STEREO;
- a->index = index;
- return 0;
+ dev->io = IO_READ;
+ dev->stream = STREAM_ON;
+ em28xx_queue_unusedframes(dev);
}
- case VIDIOC_S_AUDIO:
- {
- struct v4l2_audio *a = arg;
-
- if (a->index != dev->ctl_ainput)
- return -EINVAL;
+ if (!count) {
+ mutex_unlock(&dev->lock);
return 0;
}
- /* --- controls ---------------------------------------------- */
- case VIDIOC_QUERYCTRL:
- {
- struct v4l2_queryctrl *qc = arg;
- int i, id=qc->id;
-
- memset(qc,0,sizeof(*qc));
- qc->id=id;
-
- if (!dev->has_msp34xx) {
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (qc->id && qc->id == em28xx_qctrl[i].id) {
- memcpy(qc, &(em28xx_qctrl[i]),
- sizeof(*qc));
- return 0;
- }
- }
+ if (list_empty(&dev->outqueue)) {
+ if (filp->f_flags & O_NONBLOCK) {
+ mutex_unlock(&dev->lock);
+ return -EAGAIN;
}
- mutex_lock(&dev->lock);
- em28xx_i2c_call_clients(dev,cmd,qc);
- mutex_unlock(&dev->lock);
- if (qc->type)
- return 0;
- else
- return -EINVAL;
- }
- case VIDIOC_G_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- int retval=-EINVAL;
-
- if (!dev->has_msp34xx)
- retval=em28xx_get_ctrl(dev, ctrl);
- if (retval==-EINVAL) {
- mutex_lock(&dev->lock);
- em28xx_i2c_call_clients(dev,cmd,arg);
+ ret = wait_event_interruptible
+ (dev->wait_frame,
+ (!list_empty(&dev->outqueue)) ||
+ (dev->state & DEV_DISCONNECTED));
+ if (ret) {
mutex_unlock(&dev->lock);
- return 0;
- } else return retval;
- }
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- u8 i;
- mutex_lock(&dev->lock);
-
- if (!dev->has_msp34xx){
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (ctrl->id == em28xx_qctrl[i].id) {
- int retval=-EINVAL;
- if (ctrl->value <
- em28xx_qctrl[i].minimum
- || ctrl->value >
- em28xx_qctrl[i].maximum)
- return -ERANGE;
- retval = em28xx_set_ctrl(dev, ctrl);
- mutex_unlock(&dev->lock);
- return retval;
- }
- }
+ return ret;
}
-
- em28xx_i2c_call_clients(dev,cmd,arg);
- mutex_unlock(&dev->lock);
- return 0;
+ if (dev->state & DEV_DISCONNECTED) {
+ mutex_unlock(&dev->lock);
+ return -ENODEV;
+ }
+ dev->video_bytesread = 0;
}
- /* --- tuner ioctls ------------------------------------------ */
- case VIDIOC_G_TUNER:
- {
- struct v4l2_tuner *t = arg;
- if (0 != t->index)
- return -EINVAL;
+ f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
- memset(t, 0, sizeof(*t));
- strcpy(t->name, "Tuner");
- mutex_lock(&dev->lock);
- /* let clients fill in the remainder of this struct */
- em28xx_i2c_call_clients(dev, cmd, t);
- mutex_unlock(&dev->lock);
- em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal,
- t->afc);
- return 0;
- }
- case VIDIOC_S_TUNER:
- {
- struct v4l2_tuner *t = arg;
+ em28xx_queue_unusedframes(dev);
- if (0 != t->index)
- return -EINVAL;
- mutex_lock(&dev->lock);
- /* let clients handle this */
- em28xx_i2c_call_clients(dev, cmd, t);
- mutex_unlock(&dev->lock);
- return 0;
- }
- case VIDIOC_G_FREQUENCY:
- {
- struct v4l2_frequency *f = arg;
+ if (count > f->buf.length)
+ count = f->buf.length;
- memset(f, 0, sizeof(*f));
- f->type = V4L2_TUNER_ANALOG_TV;
- f->frequency = dev->ctl_freq;
+ if ((dev->video_bytesread + count) > dev->frame_size)
+ count = dev->frame_size - dev->video_bytesread;
- return 0;
+ if (copy_to_user(buf, f->bufmem+dev->video_bytesread, count)) {
+ em28xx_err("Error while copying to user\n");
+ return -EFAULT;
}
- case VIDIOC_S_FREQUENCY:
- {
- struct v4l2_frequency *f = arg;
-
- if (0 != f->tuner)
- return -EINVAL;
-
- if (V4L2_TUNER_ANALOG_TV != f->type)
- return -EINVAL;
+ dev->video_bytesread += count;
- mutex_lock(&dev->lock);
- dev->ctl_freq = f->frequency;
- em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
- mutex_unlock(&dev->lock);
- return 0;
- }
- case VIDIOC_CROPCAP:
- {
- struct v4l2_cropcap *cc = arg;
+ if (dev->video_bytesread == dev->frame_size) {
+ spin_lock_irqsave(&dev->queue_lock, lock_flags);
+ list_for_each_entry(i, &dev->outqueue, frame)
+ i->state = F_UNUSED;
+ INIT_LIST_HEAD(&dev->outqueue);
+ spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
- 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;
+ em28xx_queue_unusedframes(dev);
+ dev->video_bytesread = 0;
}
- case VIDIOC_STREAMON:
- {
- int *type = arg;
-
- if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
- if (list_empty(&dev->inqueue))
- return -EINVAL;
+ *f_pos += count;
- if (unlikely(res_get(fh) < 0))
- return -EBUSY;
+ mutex_unlock(&dev->lock);
- dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
+ return count;
+}
- em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
+/*
+ * em28xx_v4l2_poll()
+ * will allocate buffers when called for the first time
+ */
+static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
+{
+ unsigned int mask = 0;
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
- return 0;
- }
- case VIDIOC_STREAMOFF:
- {
- int *type = arg;
- int ret;
+ if (unlikely(res_get(fh) < 0))
+ return POLLERR;
- if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
+ mutex_lock(&dev->lock);
- mutex_lock(&dev->lock);
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev))){
- mutex_unlock(&dev->lock);
- return ret;
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_videodbg("device not present\n");
+ } else if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_videodbg("device is misconfigured; close and open it again\n");
+ } else {
+ if (dev->io == IO_NONE) {
+ if (!em28xx_request_buffers
+ (dev, EM28XX_NUM_READ_FRAMES)) {
+ em28xx_warn
+ ("poll() failed, not enough memory\n");
+ } else {
+ dev->io = IO_READ;
+ dev->stream = STREAM_ON;
}
}
- em28xx_empty_framequeues(dev);
- mutex_unlock(&dev->lock);
+ if (dev->io == IO_READ) {
+ em28xx_queue_unusedframes(dev);
+ poll_wait(filp, &dev->wait_frame, wait);
- return 0;
- }
- default:
- return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
- driver_ioctl);
+ if (!list_empty(&dev->outqueue))
+ mask |= POLLIN | POLLRDNORM;
+
+ mutex_unlock(&dev->lock);
+
+ return mask;
+ }
}
- return 0;
+
+ mutex_unlock(&dev->lock);
+ return POLLERR;
}
/*
- * em28xx_v4l2_do_ioctl()
- * This function is _not_ called directly, but from
- * em28xx_v4l2_ioctl. Userspace
- * copying is done already, arg is a kernel pointer.
+ * em28xx_v4l2_mmap()
*/
-static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, void *arg)
+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;
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ unsigned long size = vma->vm_end - vma->vm_start;
+ unsigned long start = vma->vm_start;
+ void *pos;
+ u32 i;
- if (!dev)
- return -ENODEV;
+ if (unlikely(res_get(fh) < 0))
+ return -EBUSY;
- if (video_debug > 1)
- v4l_print_ioctl(dev->name,cmd);
-
- switch (cmd) {
-
- /* --- capabilities ------------------------------------------ */
- case VIDIOC_QUERYCAP:
- {
- struct v4l2_capability *cap = arg;
-
- memset(cap, 0, sizeof(*cap));
- strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
- strlcpy(cap->card, em28xx_boards[dev->model].name,
- sizeof(cap->card));
- strlcpy(cap->bus_info, dev->udev->dev.bus_id,
- sizeof(cap->bus_info));
- cap->version = EM28XX_VERSION_CODE;
- cap->capabilities =
- V4L2_CAP_SLICED_VBI_CAPTURE |
- V4L2_CAP_VIDEO_CAPTURE |
- V4L2_CAP_AUDIO |
- V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
- if (dev->has_tuner)
- cap->capabilities |= V4L2_CAP_TUNER;
- return 0;
+ mutex_lock(&dev->lock);
+
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_videodbg("mmap: device not present\n");
+ mutex_unlock(&dev->lock);
+ return -ENODEV;
}
- /* --- capture ioctls ---------------------------------------- */
- case VIDIOC_ENUM_FMT:
- {
- struct v4l2_fmtdesc *fmtd = arg;
- if (fmtd->index != 0)
- return -EINVAL;
- memset(fmtd, 0, sizeof(*fmtd));
- fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- strcpy(fmtd->description, "Packed YUY2");
- fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
- memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
- return 0;
+ if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_videodbg ("mmap: Device is misconfigured; close and "
+ "open it again\n");
+ mutex_unlock(&dev->lock);
+ return -EIO;
}
- case VIDIOC_G_FMT:
- {
- int retval;
- mutex_lock(&dev->lock);
- retval = em28xx_get_fmt(dev, (struct v4l2_format *) arg);
+
+ if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE)) {
mutex_unlock(&dev->lock);
- return retval;
+ return -EINVAL;
+ }
+
+ if (size > PAGE_ALIGN(dev->frame[0].buf.length))
+ size = PAGE_ALIGN(dev->frame[0].buf.length);
+ for (i = 0; i < dev->num_frames; i++) {
+ if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
+ break;
}
- case VIDIOC_TRY_FMT:
- case VIDIOC_S_FMT:
- {
- int retval;
- mutex_lock(&dev->lock);
- retval = em28xx_set_fmt(dev, cmd, (struct v4l2_format *)arg);
+ if (i == dev->num_frames) {
+ em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
mutex_unlock(&dev->lock);
- return retval;
+ return -EINVAL;
}
- case VIDIOC_REQBUFS:
- {
- struct v4l2_requestbuffers *rb = arg;
- u32 i;
- int ret;
-
- if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- rb->memory != V4L2_MEMORY_MMAP)
- return -EINVAL;
+ /* VM_IO is eventually going to replace PageReserved altogether */
+ vma->vm_flags |= VM_IO;
+ vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
- if (dev->io == IO_READ) {
- em28xx_videodbg ("method is set to read;"
- " close and open the device again to"
- " choose the mmap I/O method\n");
- return -EINVAL;
+ pos = dev->frame[i].bufmem;
+ while (size > 0) { /* size is page-aligned */
+ if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
+ em28xx_videodbg("mmap: vm_insert_page failed\n");
+ mutex_unlock(&dev->lock);
+ return -EAGAIN;
}
+ start += PAGE_SIZE;
+ pos += PAGE_SIZE;
+ size -= PAGE_SIZE;
+ }
- for (i = 0; i < dev->num_frames; i++)
- if (dev->frame[i].vma_use_count) {
- em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n");
- return -EINVAL;
- }
-
- mutex_lock(&dev->lock);
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev))){
- mutex_unlock(&dev->lock);
- return ret;
- }
- }
+ vma->vm_ops = &em28xx_vm_ops;
+ vma->vm_private_data = &dev->frame[i];
- em28xx_empty_framequeues(dev);
+ em28xx_vm_open(vma);
+ mutex_unlock(&dev->lock);
+ return 0;
+}
- em28xx_release_buffers(dev);
- if (rb->count)
- rb->count =
- em28xx_request_buffers(dev, rb->count);
+static const struct 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,
+ .llseek = no_llseek,
+ .compat_ioctl = v4l_compat_ioctl32,
+};
- dev->frame_current = NULL;
+static const struct file_operations radio_fops = {
+ .owner = THIS_MODULE,
+ .open = em28xx_v4l2_open,
+ .release = em28xx_v4l2_close,
+ .ioctl = video_ioctl2,
+ .compat_ioctl = v4l_compat_ioctl32,
+ .llseek = no_llseek,
+};
- em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
- rb->count);
- dev->io = rb->count ? IO_MMAP : IO_NONE;
- mutex_unlock(&dev->lock);
- return 0;
- }
- case VIDIOC_QUERYBUF:
- {
- struct v4l2_buffer *b = arg;
+static const struct video_device em28xx_video_template = {
+ .fops = &em28xx_v4l_fops,
+ .release = video_device_release,
+
+ .minor = -1,
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
+ .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
+ .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
+ .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
+ .vidioc_g_audio = vidioc_g_audio,
+ .vidioc_s_audio = vidioc_s_audio,
+ .vidioc_cropcap = vidioc_cropcap,
+
+ .vidioc_g_fmt_vbi_capture = vidioc_g_fmt_vbi_capture,
+ .vidioc_try_fmt_vbi_capture = vidioc_try_set_vbi_capture,
+ .vidioc_s_fmt_vbi_capture = vidioc_try_set_vbi_capture,
+
+ .vidioc_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+ .vidioc_s_std = vidioc_s_std,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+ .vidioc_g_tuner = vidioc_g_tuner,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .vidioc_g_frequency = vidioc_g_frequency,
+ .vidioc_s_frequency = vidioc_s_frequency,
+
+ .tvnorms = V4L2_STD_ALL,
+ .current_norm = V4L2_STD_PAL,
+};
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- b->index >= dev->num_frames || dev->io != IO_MMAP)
- return -EINVAL;
+static struct video_device em28xx_radio_template = {
+ .name = "em28xx-radio",
+ .type = VID_TYPE_TUNER,
+ .fops = &radio_fops,
+ .minor = -1,
+ .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,
+};
- memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
+/******************************** usb interface *****************************************/
- if (dev->frame[b->index].vma_use_count) {
- b->flags |= V4L2_BUF_FLAG_MAPPED;
- }
- if (dev->frame[b->index].state == F_DONE)
- b->flags |= V4L2_BUF_FLAG_DONE;
- else if (dev->frame[b->index].state != F_UNUSED)
- b->flags |= V4L2_BUF_FLAG_QUEUED;
- return 0;
- }
- case VIDIOC_QBUF:
- {
- struct v4l2_buffer *b = arg;
- unsigned long lock_flags;
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- b->index >= dev->num_frames || dev->io != IO_MMAP) {
- return -EINVAL;
- }
+static LIST_HEAD(em28xx_extension_devlist);
+static DEFINE_MUTEX(em28xx_extension_devlist_lock);
- if (dev->frame[b->index].state != F_UNUSED) {
- return -EAGAIN;
- }
- dev->frame[b->index].state = F_QUEUED;
+int em28xx_register_extension(struct em28xx_ops *ops)
+{
+ struct em28xx *h, *dev = NULL;
- /* add frame to fifo */
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- list_add_tail(&dev->frame[b->index].frame,
- &dev->inqueue);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+ list_for_each_entry(h, &em28xx_devlist, devlist)
+ dev = h;
- return 0;
- }
- case VIDIOC_DQBUF:
- {
- struct v4l2_buffer *b = arg;
- struct em28xx_frame_t *f;
- unsigned long lock_flags;
- int ret = 0;
+ mutex_lock(&em28xx_extension_devlist_lock);
+ list_add_tail(&ops->next, &em28xx_extension_devlist);
+ if (dev)
+ ops->init(dev);
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
+ printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
+ mutex_unlock(&em28xx_extension_devlist_lock);
- if (list_empty(&dev->outqueue)) {
- if (dev->stream == STREAM_OFF)
- return -EINVAL;
- if (filp->f_flags & O_NONBLOCK)
- return -EAGAIN;
- ret = wait_event_interruptible
- (dev->wait_frame,
- (!list_empty(&dev->outqueue)) ||
- (dev->state & DEV_DISCONNECTED));
- if (ret)
- return ret;
- if (dev->state & DEV_DISCONNECTED)
- return -ENODEV;
- }
+ return 0;
+}
+EXPORT_SYMBOL(em28xx_register_extension);
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- f = list_entry(dev->outqueue.next,
- struct em28xx_frame_t, frame);
- list_del(dev->outqueue.next);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+void em28xx_unregister_extension(struct em28xx_ops *ops)
+{
+ struct em28xx *h, *dev = NULL;
- f->state = F_UNUSED;
- memcpy(b, &f->buf, sizeof(*b));
+ list_for_each_entry(h, &em28xx_devlist, devlist)
+ dev = h;
- if (f->vma_use_count)
- b->flags |= V4L2_BUF_FLAG_MAPPED;
+ if (dev)
+ ops->fini(dev);
- return 0;
- }
- default:
- return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
- em28xx_video_do_ioctl);
- }
- return 0;
+ mutex_lock(&em28xx_extension_devlist_lock);
+ printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);
+ list_del(&ops->next);
+ mutex_unlock(&em28xx_extension_devlist_lock);
}
+EXPORT_SYMBOL(em28xx_unregister_extension);
-/*
- * em28xx_v4l2_ioctl()
- * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl()
- */
-static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+struct video_device *em28xx_vdev_init(struct em28xx *dev,
+ const struct video_device *template,
+ const int type,
+ const char *type_name)
{
- int ret = 0;
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
-
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_errdev("v4l2 ioctl: device not present\n");
- return -ENODEV;
- }
+ struct video_device *vfd;
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_errdev
- ("v4l2 ioctl: device is misconfigured; close and open it again\n");
- return -EIO;
- }
+ vfd = video_device_alloc();
+ if (NULL == vfd)
+ return NULL;
+ *vfd = *template;
+ vfd->minor = -1;
+ vfd->dev = &dev->udev->dev;
+ vfd->release = video_device_release;
+ vfd->type = type;
- ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
+ snprintf(vfd->name, sizeof(vfd->name), "%s %s",
+ dev->name, type_name);
- return ret;
+ return vfd;
}
-static const struct file_operations em28xx_v4l_fops = {
- .owner = THIS_MODULE,
- .open = em28xx_v4l2_open,
- .release = em28xx_v4l2_close,
- .ioctl = em28xx_v4l2_ioctl,
- .read = em28xx_v4l2_read,
- .poll = em28xx_v4l2_poll,
- .mmap = em28xx_v4l2_mmap,
- .llseek = no_llseek,
- .compat_ioctl = v4l_compat_ioctl32,
-
-};
-
-/******************************** usb interface *****************************************/
/*
* em28xx_init_dev()
static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
int minor)
{
+ struct em28xx_ops *ops = NULL;
struct em28xx *dev = *devhandle;
int retval = -ENOMEM;
- int errCode, i;
+ int errCode;
unsigned int maxh, maxw;
dev->udev = udev;
dev->em28xx_read_reg_req = em28xx_read_reg_req;
dev->is_em2800 = em28xx_boards[dev->model].is_em2800;
- /* setup video picture settings for saa7113h */
- memset(&dev->vpic, 0, sizeof(dev->vpic));
- dev->vpic.colour = 128 << 8;
- dev->vpic.hue = 128 << 8;
- dev->vpic.brightness = 128 << 8;
- dev->vpic.contrast = 192 << 8;
- dev->vpic.whiteness = 128 << 8; /* This one isn't used */
- dev->vpic.depth = 16;
- dev->vpic.palette = VIDEO_PALETTE_YUV422;
+ errCode = em28xx_read_reg(dev, CHIPID_REG);
+ if (errCode >= 0)
+ em28xx_info("em28xx chip ID = %d\n", errCode);
em28xx_pre_card_setup(dev);
/* Do board specific init and eeprom reading */
em28xx_card_setup(dev);
+ /* Configure audio */
+ em28xx_audio_analog_set(dev);
+
/* configure the device */
em28xx_config_i2c(dev);
- for (i = 0; i < TVNORMS; i++)
- if (em28xx_boards[dev->model].norm == tvnorms[i].mode)
- break;
- if (i == TVNORMS)
- i = 0;
-
- dev->tvnorm = &tvnorms[i]; /* set default norm */
-
- em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name);
+ /* set default norm */
+ dev->norm = em28xx_video_template.current_norm;
maxw = norm_maxw(dev);
maxh = norm_maxh(dev);
errCode = em28xx_config(dev);
- /* allocate and fill v4l2 device struct */
- dev->vdev = video_device_alloc();
+ list_add_tail(&dev->devlist, &em28xx_devlist);
+
+ /* allocate and fill video video_device struct */
+ dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template,
+ VID_TYPE_CAPTURE, "video");
if (NULL == dev->vdev) {
em28xx_errdev("cannot allocate video_device.\n");
- em28xx_devused&=~(1<<dev->devno);
- kfree(dev);
- return -ENOMEM;
+ goto fail_unreg;
}
+ if (dev->has_tuner)
+ dev->vdev->type |= VID_TYPE_TUNER;
- dev->vbi_dev = video_device_alloc();
- if (NULL == dev->vbi_dev) {
- em28xx_errdev("cannot allocate video_device.\n");
- kfree(dev->vdev);
- em28xx_devused&=~(1<<dev->devno);
- kfree(dev);
- return -ENOMEM;
+ /* register v4l2 video video_device */
+ retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
+ video_nr[dev->devno]);
+ if (retval) {
+ em28xx_errdev("unable to register video device (error=%i).\n",
+ retval);
+ goto fail_unreg;
}
- /* Fills VBI device info */
- dev->vbi_dev->type = VFL_TYPE_VBI;
- dev->vbi_dev->fops = &em28xx_v4l_fops;
- dev->vbi_dev->minor = -1;
- dev->vbi_dev->dev = &dev->udev->dev;
- dev->vbi_dev->release = video_device_release;
- snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
- "em28xx",dev->devno,"vbi");
-
- /* Fills CAPTURE device info */
- dev->vdev->type = VID_TYPE_CAPTURE;
- if (dev->has_tuner)
- dev->vdev->type |= VID_TYPE_TUNER;
- dev->vdev->fops = &em28xx_v4l_fops;
- dev->vdev->minor = -1;
- dev->vdev->dev = &dev->udev->dev;
- dev->vdev->release = video_device_release;
- snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
- "em28xx",dev->devno,"video");
+ /* Allocate and fill vbi video_device struct */
+ dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
+ VFL_TYPE_VBI, "vbi");
+ /* register v4l2 vbi video_device */
+ if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
+ vbi_nr[dev->devno]) < 0) {
+ em28xx_errdev("unable to register vbi device\n");
+ retval = -ENODEV;
+ goto fail_unreg;
+ }
- list_add_tail(&dev->devlist,&em28xx_devlist);
+ if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
+ dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
+ VFL_TYPE_RADIO, "radio");
+ if (NULL == dev->radio_dev) {
+ em28xx_errdev("cannot allocate video_device.\n");
+ goto fail_unreg;
+ }
+ retval = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
+ radio_nr[dev->devno]);
+ if (retval < 0) {
+ em28xx_errdev("can't register radio device\n");
+ goto fail_unreg;
+ }
+ em28xx_info("Registered radio device as /dev/radio%d\n",
+ dev->radio_dev->minor & 0x1f);
+ }
if (dev->has_msp34xx) {
msleep(3);
em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
msleep(3);
-
- }
- video_mux(dev, 0);
-
- /* register v4l2 device */
- if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
- video_nr[dev->devno]))) {
- em28xx_errdev("unable to register video device (error=%i).\n",
- retval);
- mutex_unlock(&dev->lock);
- list_del(&dev->devlist);
- video_device_release(dev->vdev);
- em28xx_devused&=~(1<<dev->devno);
- kfree(dev);
- return -ENODEV;
}
- if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
- vbi_nr[dev->devno]) < 0) {
- printk("unable to register vbi device\n");
- mutex_unlock(&dev->lock);
- list_del(&dev->devlist);
- video_device_release(dev->vbi_dev);
- video_device_release(dev->vdev);
- em28xx_devused&=~(1<<dev->devno);
- kfree(dev);
- return -ENODEV;
- } else {
- printk("registered VBI\n");
- }
+ video_mux(dev, 0);
em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
+ mutex_lock(&em28xx_extension_devlist_lock);
+ if (!list_empty(&em28xx_extension_devlist)) {
+ list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+ if (ops->id)
+ ops->init(dev);
+ }
+ }
+ mutex_unlock(&em28xx_extension_devlist_lock);
+
return 0;
+
+fail_unreg:
+ em28xx_release_resources(dev);
+ mutex_unlock(&dev->lock);
+ kfree(dev);
+ return retval;
+}
+
+#if defined(CONFIG_MODULES) && defined(MODULE)
+static void request_module_async(struct work_struct *work)
+{
+ struct em28xx *dev = container_of(work,
+ struct em28xx, request_module_wk);
+
+ if (dev->has_audio_class)
+ request_module("snd-usb-audio");
+ else
+ request_module("em28xx-alsa");
}
+static void request_modules(struct em28xx *dev)
+{
+ INIT_WORK(&dev->request_module_wk, request_module_async);
+ schedule_work(&dev->request_module_wk);
+}
+#else
+#define request_modules(dev)
+#endif /* CONFIG_MODULES */
+
/*
* em28xx_usb_probe()
* checks for supported devices
dev->devno = nr;
dev->model = id->driver_info;
+ /* Checks if audio is provided by some interface */
+ for (i = 0; i < udev->config->desc.bNumInterfaces; i++) {
+ uif = udev->config->interface[i];
+ if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
+ dev->has_audio_class = 1;
+ break;
+ }
+ }
+
+ printk(KERN_INFO DRIVER_NAME " %s usb audio class\n",
+ dev->has_audio_class ? "Has" : "Doesn't have");
+
/* compute alternate max packet sizes */
uif = udev->actconfig->interface[0];
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
+
+ request_modules(dev);
+
return 0;
}
static void em28xx_usb_disconnect(struct usb_interface *interface)
{
struct em28xx *dev;
+ struct em28xx_ops *ops = NULL;
dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
dev->state |= DEV_DISCONNECTED;
em28xx_release_resources(dev);
}
-
-
mutex_unlock(&dev->lock);
+ mutex_lock(&em28xx_extension_devlist_lock);
+ if (!list_empty(&em28xx_extension_devlist)) {
+ list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+ ops->fini(dev);
+ }
+ }
+ mutex_unlock(&em28xx_extension_devlist_lock);
+
if (!dev->users) {
kfree(dev->alt_max_pkt_size);
kfree(dev);
}
-
}
static struct usb_driver em28xx_usb_driver = {