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- /*
- 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/video_decoder.h>
- #include <linux/mutex.h>
- #include "em28xx.h"
- #include <media/tuner.h>
- #include <media/v4l2-common.h>
- #include <media/msp3400.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_NAME "em28xx"
- #define DRIVER_DESC "Empia em28xx based USB video device driver"
- #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
- #define em28xx_videodbg(fmt, arg...) do {\
- if (video_debug) \
- printk(KERN_INFO "%s %s :"fmt, \
- dev->name, __FUNCTION__ , ##arg); } while (0)
- MODULE_AUTHOR(DRIVER_AUTHOR);
- MODULE_DESCRIPTION(DRIVER_DESC);
- MODULE_LICENSE("GPL");
- static LIST_HEAD(em28xx_devlist);
- 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 };
- 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");
- static int tuner = -1;
- module_param(tuner, int, 0444);
- MODULE_PARM_DESC(tuner, "tuner type");
- static unsigned int video_debug = 0;
- module_param(video_debug,int,0644);
- MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
- /* 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[] = {
- {
- .id = V4L2_CID_AUDIO_VOLUME,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Volume",
- .minimum = 0x0,
- .maximum = 0x1f,
- .step = 0x1,
- .default_value = 0x1f,
- .flags = 0,
- },{
- .id = V4L2_CID_AUDIO_MUTE,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Mute",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 1,
- .flags = 0,
- }
- };
- static struct usb_driver em28xx_usb_driver;
- static DEFINE_MUTEX(em28xx_sysfs_lock);
- static DECLARE_RWSEM(em28xx_disconnect);
- /********************* v4l2 interface ******************************************/
- /*
- * em28xx_config()
- * inits registers with sane defaults
- */
- static int em28xx_config(struct em28xx *dev)
- {
- /* Sets I2C speed to 100 KHz */
- em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
- /* enable vbi capturing */
- /* em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1); audio register */
- /* 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);
- return 0;
- }
- /*
- * em28xx_config_i2c()
- * configure i2c attached devices
- */
- static void em28xx_config_i2c(struct em28xx *dev)
- {
- struct v4l2_frequency f;
- struct v4l2_routing route;
- route.input = INPUT(dev->ctl_input)->vmux;
- route.output = 0;
- em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL);
- em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
- em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
- /* configure tuner */
- f.tuner = 0;
- f.type = V4L2_TUNER_ANALOG_TV;
- f.frequency = 9076; /* FIXME:remove magic number */
- dev->ctl_freq = f.frequency;
- em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
- /* configure tda9887 */
- /* em28xx_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */
- }
- /*
- * em28xx_empty_framequeues()
- * prepare queues for incoming and outgoing frames
- */
- static void em28xx_empty_framequeues(struct em28xx *dev)
- {
- u32 i;
- INIT_LIST_HEAD(&dev->inqueue);
- INIT_LIST_HEAD(&dev->outqueue);
- for (i = 0; i < EM28XX_NUM_FRAMES; i++) {
- dev->frame[i].state = F_UNUSED;
- dev->frame[i].buf.bytesused = 0;
- }
- }
- static void video_mux(struct em28xx *dev, int index)
- {
- int ainput;
- struct v4l2_routing route;
- route.input = INPUT(index)->vmux;
- route.output = 0;
- dev->ctl_input = index;
- dev->ctl_ainput = INPUT(index)->amux;
- 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.input = dev->ctl_ainput;
- 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_v4l2_open()
- * inits the device and starts isoc transfer
- */
- static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
- {
- int minor = iminor(inode);
- int errCode = 0;
- struct em28xx *h,*dev = NULL;
- struct list_head *list;
- list_for_each(list,&em28xx_devlist) {
- h = list_entry(list, struct em28xx, 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;
- filp->private_data=dev;
- em28xx_videodbg("open minor=%d type=%s users=%d\n",
- minor,v4l2_type_names[dev->type],dev->users);
- if (!down_read_trylock(&em28xx_disconnect))
- return -ERESTARTSYS;
- if (dev->users) {
- em28xx_warn("this driver can be opened only once\n");
- up_read(&em28xx_disconnect);
- return -EBUSY;
- }
- mutex_init(&dev->fileop_lock); /* to 1 == available */
- spin_lock_init(&dev->queue_lock);
- init_waitqueue_head(&dev->wait_frame);
- init_waitqueue_head(&dev->wait_stream);
- mutex_lock(&dev->lock);
- if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- 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;
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
- /* device needs to be initialized before isoc transfer */
- video_mux(dev, 0);
- /* start the transfer */
- errCode = em28xx_init_isoc(dev);
- if (errCode)
- goto err;
- }
- dev->users++;
- filp->private_data = dev;
- dev->io = IO_NONE;
- dev->stream = STREAM_OFF;
- dev->num_frames = 0;
- /* prepare queues */
- em28xx_empty_framequeues(dev);
- dev->state |= DEV_INITIALIZED;
- err:
- mutex_unlock(&dev->lock);
- up_read(&em28xx_disconnect);
- 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)
- {
- mutex_lock(&em28xx_sysfs_lock);
- /*FIXME: I2C IR should be disconnected */
- 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);
- mutex_unlock(&em28xx_sysfs_lock);
- /* Mark device as unused */
- em28xx_devused&=~(1<<dev->devno);
- }
- /*
- * 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)
- {
- int errCode;
- struct em28xx *dev=filp->private_data;
- em28xx_videodbg("users=%d\n", dev->users);
- mutex_lock(&dev->lock);
- em28xx_uninit_isoc(dev);
- em28xx_release_buffers(dev);
- /* 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;
- }
- /* 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);
- }
- 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)
- {
- struct em28xx_frame_t *f, *i;
- unsigned long lock_flags;
- int ret = 0;
- struct em28xx *dev = filp->private_data;
- 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->fileop_lock);
- return -EFAULT;
- }
- 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->fileop_lock);
- return -EFAULT;
- }
- return (1);
- }
- if (mutex_lock_interruptible(&dev->fileop_lock))
- return -ERESTARTSYS;
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("device not present\n");
- mutex_unlock(&dev->fileop_lock);
- return -ENODEV;
- }
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg("device misconfigured; close and open it again\n");
- mutex_unlock(&dev->fileop_lock);
- return -EIO;
- }
- 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->fileop_lock);
- return -EINVAL;
- }
- 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->fileop_lock);
- return -ENOMEM;
- }
- dev->io = IO_READ;
- dev->stream = STREAM_ON;
- em28xx_queue_unusedframes(dev);
- }
- if (!count) {
- mutex_unlock(&dev->fileop_lock);
- return 0;
- }
- if (list_empty(&dev->outqueue)) {
- if (filp->f_flags & O_NONBLOCK) {
- mutex_unlock(&dev->fileop_lock);
- return -EAGAIN;
- }
- ret = wait_event_interruptible
- (dev->wait_frame,
- (!list_empty(&dev->outqueue)) ||
- (dev->state & DEV_DISCONNECTED));
- if (ret) {
- mutex_unlock(&dev->fileop_lock);
- return ret;
- }
- if (dev->state & DEV_DISCONNECTED) {
- mutex_unlock(&dev->fileop_lock);
- return -ENODEV;
- }
- }
- f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
- 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);
- em28xx_queue_unusedframes(dev);
- if (count > f->buf.length)
- count = f->buf.length;
- if (copy_to_user(buf, f->bufmem, count)) {
- mutex_unlock(&dev->fileop_lock);
- return -EFAULT;
- }
- *f_pos += count;
- mutex_unlock(&dev->fileop_lock);
- return count;
- }
- /*
- * 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 *dev = filp->private_data;
- if (mutex_lock_interruptible(&dev->fileop_lock))
- return POLLERR;
- 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;
- }
- }
- if (dev->io == IO_READ) {
- em28xx_queue_unusedframes(dev);
- poll_wait(filp, &dev->wait_frame, wait);
- if (!list_empty(&dev->outqueue))
- mask |= POLLIN | POLLRDNORM;
- mutex_unlock(&dev->fileop_lock);
- return mask;
- }
- }
- mutex_unlock(&dev->fileop_lock);
- return POLLERR;
- }
- /*
- * em28xx_vm_open()
- */
- static void em28xx_vm_open(struct vm_area_struct *vma)
- {
- struct em28xx_frame_t *f = vma->vm_private_data;
- f->vma_use_count++;
- }
- /*
- * 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;
- f->vma_use_count--;
- }
- static struct vm_operations_struct em28xx_vm_ops = {
- .open = em28xx_vm_open,
- .close = em28xx_vm_close,
- };
- /*
- * em28xx_v4l2_mmap()
- */
- static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
- {
- unsigned long size = vma->vm_end - vma->vm_start,
- start = vma->vm_start;
- void *pos;
- u32 i;
- struct em28xx *dev = filp->private_data;
- if (mutex_lock_interruptible(&dev->fileop_lock))
- return -ERESTARTSYS;
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("mmap: device not present\n");
- mutex_unlock(&dev->fileop_lock);
- return -ENODEV;
- }
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg ("mmap: Device is misconfigured; close and "
- "open it again\n");
- mutex_unlock(&dev->fileop_lock);
- return -EIO;
- }
- if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
- size != PAGE_ALIGN(dev->frame[0].buf.length)) {
- mutex_unlock(&dev->fileop_lock);
- 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->fileop_lock);
- 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 */
- 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->fileop_lock);
- return -EAGAIN;
- }
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
- vma->vm_ops = &em28xx_vm_ops;
- vma->vm_private_data = &dev->frame[i];
- em28xx_vm_open(vma);
- mutex_unlock(&dev->fileop_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)
- {
- 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;
- }
- }
- /*
- * 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;
- 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:
- return -EINVAL;
- }
- }
- /*
- * em28xx_stream_interrupt()
- * stops streaming
- */
- static int em28xx_stream_interrupt(struct em28xx *dev)
- {
- int ret = 0;
- /* stop reading from the device */
- 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;
- }
- return 0;
- }
- static int em28xx_set_norm(struct em28xx *dev, int width, int height)
- {
- unsigned int hscale, vscale;
- unsigned int maxh, maxw;
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
- /* width must even because of the YUYV format */
- /* height must be even because of interlacing */
- height &= 0xfffe;
- width &= 0xfffe;
- if (height < 32)
- height = 32;
- if (height > maxh)
- height = maxh;
- if (width < 48)
- width = 48;
- if (width > maxw)
- width = maxw;
- if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
- hscale = 0x3fff;
- width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
- if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
- vscale = 0x3fff;
- height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
- /* 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_resolution_set(dev);
- return 0;
- }
- static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format)
- {
- 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");
- 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? */
- em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
- dev->height);
- break;
- }
- case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
- {
- format->fmt.sliced.service_set=0;
- em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
- if (format->fmt.sliced.service_set==0)
- return -EINVAL;
- break;
- }
- default:
- return -EINVAL;
- }
- return (0);
- }
- static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format)
- {
- 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);
- 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");
- if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
- em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
- if (format->fmt.sliced.service_set==0)
- return -EINVAL;
- return 0;
- }
- if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- 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;
- if (height < 32)
- height = 32;
- if (height > maxh)
- height = maxh;
- if (width < 48)
- width = 48;
- if (width > maxw)
- width = maxw;
- 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;
- }
- if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
- hscale = 0x3fff;
- width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
- if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
- vscale = 0x3fff;
- 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;
- 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);
- if (cmd == VIDIOC_TRY_FMT)
- return 0;
- 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;
- }
- /* stop io in case it is already in progress */
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
- }
- 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);
- 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.
- */
- static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
- struct em28xx *dev, unsigned int cmd, void *arg,
- v4l2_kioctl driver_ioctl)
- {
- 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;
- 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;
- mutex_lock(&dev->lock);
- dev->tvnorm = &tvnorms[i];
- em28xx_set_norm(dev, dev->width, dev->height);
- em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
- &dev->tvnorm->id);
- mutex_unlock(&dev->lock);
- return 0;
- }
- /* ------ 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;
- }
- case VIDIOC_G_INPUT:
- {
- int *i = arg;
- *i = dev->ctl_input;
- return 0;
- }
- 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);
- mutex_unlock(&dev->lock);
- return 0;
- }
- 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 (index == 0) {
- strcpy(a->name, "Television");
- } else {
- strcpy(a->name, "Line In");
- }
- a->capability = V4L2_AUDCAP_STEREO;
- a->index = index;
- return 0;
- }
- case VIDIOC_S_AUDIO:
- {
- struct v4l2_audio *a = arg;
- if (a->index != dev->ctl_ainput)
- return -EINVAL;
- 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;
- }
- }
- }
- em28xx_i2c_call_clients(dev,cmd,qc);
- 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) {
- em28xx_i2c_call_clients(dev,cmd,arg);
- return 0;
- } else return retval;
- }
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- u8 i;
- if (!dev->has_msp34xx){
- 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)
- return -ERANGE;
- return em28xx_set_ctrl(dev, ctrl);
- }
- }
- }
- em28xx_i2c_call_clients(dev,cmd,arg);
- return 0;
- }
- /* --- tuner ioctls ------------------------------------------ */
- case VIDIOC_G_TUNER:
- {
- struct v4l2_tuner *t = arg;
- if (0 != t->index)
- return -EINVAL;
- 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;
- 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;
- memset(f, 0, sizeof(*f));
- f->type = V4L2_TUNER_ANALOG_TV;
- f->frequency = dev->ctl_freq;
- return 0;
- }
- case VIDIOC_S_FREQUENCY:
- {
- struct v4l2_frequency *f = arg;
- if (0 != f->tuner)
- return -EINVAL;
- if (V4L2_TUNER_ANALOG_TV != f->type)
- return -EINVAL;
- 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 (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;
- }
- 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;
- dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
- em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
- return 0;
- }
- case VIDIOC_STREAMOFF:
- {
- int *type = arg;
- int ret;
- if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
- }
- em28xx_empty_framequeues(dev);
- return 0;
- }
- default:
- return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
- driver_ioctl);
- }
- 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.
- */
- static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, void *arg)
- {
- struct em28xx *dev = filp->private_data;
- if (!dev)
- return -ENODEV;
- 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;
- }
- /* --- 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;
- }
- case VIDIOC_G_FMT:
- return em28xx_get_fmt(dev, (struct v4l2_format *) arg);
- case VIDIOC_TRY_FMT:
- case VIDIOC_S_FMT:
- return em28xx_set_fmt(dev, cmd, (struct v4l2_format *)arg);
- 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;
- 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;
- }
- 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;
- }
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
- }
- em28xx_empty_framequeues(dev);
- em28xx_release_buffers(dev);
- if (rb->count)
- rb->count =
- em28xx_request_buffers(dev, rb->count);
- dev->frame_current = NULL;
- em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
- rb->count);
- dev->io = rb->count ? IO_MMAP : IO_NONE;
- return 0;
- }
- case VIDIOC_QUERYBUF:
- {
- struct v4l2_buffer *b = arg;
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- b->index >= dev->num_frames || dev->io != IO_MMAP)
- return -EINVAL;
- 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;
- 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;
- }
- 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;
- }
- case VIDIOC_DQBUF:
- {
- struct v4l2_buffer *b = arg;
- struct em28xx_frame_t *f;
- unsigned long lock_flags;
- int ret = 0;
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
- 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;
- }
- 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;
- }
- default:
- return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
- em28xx_video_do_ioctl);
- }
- return 0;
- }
- /*
- * 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)
- {
- int ret = 0;
- struct em28xx *dev = filp->private_data;
- if (mutex_lock_interruptible(&dev->fileop_lock))
- return -ERESTARTSYS;
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_errdev("v4l2 ioctl: device not present\n");
- mutex_unlock(&dev->fileop_lock);
- return -ENODEV;
- }
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_errdev
- ("v4l2 ioctl: device is misconfigured; close and open it again\n");
- mutex_unlock(&dev->fileop_lock);
- return -EIO;
- }
- ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
- mutex_unlock(&dev->fileop_lock);
- return ret;
- }
- static 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()
- * allocates and inits the device structs, registers i2c bus and v4l device
- */
- static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
- int minor, int model)
- {
- struct em28xx *dev = *devhandle;
- int retval = -ENOMEM;
- int errCode, i;
- unsigned int maxh, maxw;
- dev->udev = udev;
- dev->model = model;
- mutex_init(&dev->lock);
- init_waitqueue_head(&dev->open);
- dev->em28xx_write_regs = em28xx_write_regs;
- dev->em28xx_read_reg = em28xx_read_reg;
- dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
- dev->em28xx_write_regs_req = em28xx_write_regs_req;
- dev->em28xx_read_reg_req = em28xx_read_reg_req;
- dev->is_em2800 = em28xx_boards[model].is_em2800;
- dev->has_tuner = em28xx_boards[model].has_tuner;
- dev->has_msp34xx = em28xx_boards[model].has_msp34xx;
- dev->tda9887_conf = em28xx_boards[model].tda9887_conf;
- dev->decoder = em28xx_boards[model].decoder;
- if (tuner >= 0)
- dev->tuner_type = tuner;
- else
- dev->tuner_type = em28xx_boards[model].tuner_type;
- dev->video_inputs = em28xx_boards[model].vchannels;
- for (i = 0; i < TVNORMS; i++)
- if (em28xx_boards[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);
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
- /* set default image size */
- dev->width = maxw;
- dev->height = maxh;
- dev->interlaced = EM28XX_INTERLACED_DEFAULT;
- dev->field_size = dev->width * dev->height;
- dev->frame_size =
- dev->interlaced ? dev->field_size << 1 : dev->field_size;
- dev->bytesperline = dev->width * 2;
- dev->hscale = 0;
- dev->vscale = 0;
- dev->ctl_input = 2;
- /* 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;
- em28xx_pre_card_setup(dev);
- #ifdef CONFIG_MODULES
- /* request some modules */
- if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
- request_module("saa7115");
- if (dev->decoder == EM28XX_TVP5150)
- request_module("tvp5150");
- if (dev->has_tuner)
- request_module("tuner");
- #endif
- errCode = em28xx_config(dev);
- if (errCode) {
- em28xx_errdev("error configuring device\n");
- em28xx_devused&=~(1<<dev->devno);
- kfree(dev);
- return -ENOMEM;
- }
- mutex_lock(&dev->lock);
- /* register i2c bus */
- em28xx_i2c_register(dev);
- /* Do board specific init and eeprom reading */
- em28xx_card_setup(dev);
- /* configure the device */
- em28xx_config_i2c(dev);
- mutex_unlock(&dev->lock);
- errCode = em28xx_config(dev);
- #ifdef CONFIG_MODULES
- if (dev->has_msp34xx)
- request_module("msp3400");
- #endif
- /* allocate and fill v4l2 device struct */
- dev->vdev = video_device_alloc();
- if (NULL == dev->vdev) {
- em28xx_errdev("cannot allocate video_device.\n");
- em28xx_devused&=~(1<<dev->devno);
- kfree(dev);
- return -ENOMEM;
- }
- 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;
- }
- /* Fills VBI device info */
- dev->vbi_dev->type = VFL_TYPE_VBI;
- dev->vbi_dev->hardware = 0;
- 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->hardware = 0;
- 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");
- list_add_tail(&dev->devlist,&em28xx_devlist);
- /* register v4l2 device */
- mutex_lock(&dev->lock);
- 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");
- }
- if (dev->has_msp34xx) {
- /* Send a reset to other chips via gpio */
- em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
- udelay(2500);
- em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
- udelay(2500);
- }
- video_mux(dev, 0);
- mutex_unlock(&dev->lock);
- 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);
- return 0;
- }
- /*
- * em28xx_usb_probe()
- * checks for supported devices
- */
- static int em28xx_usb_probe(struct usb_interface *interface,
- const struct usb_device_id *id)
- {
- const struct usb_endpoint_descriptor *endpoint;
- struct usb_device *udev;
- struct usb_interface *uif;
- struct em28xx *dev = NULL;
- int retval = -ENODEV;
- int model,i,nr,ifnum;
- udev = usb_get_dev(interface_to_usbdev(interface));
- ifnum = interface->altsetting[0].desc.bInterfaceNumber;
- /* Check to see next free device and mark as used */
- nr=find_first_zero_bit(&em28xx_devused,EM28XX_MAXBOARDS);
- em28xx_devused|=1<<nr;
- /* Don't register audio interfaces */
- if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
- em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n",
- udev->descriptor.idVendor,udev->descriptor.idProduct,
- ifnum,
- interface->altsetting[0].desc.bInterfaceClass);
- em28xx_devused&=~(1<<nr);
- return -ENODEV;
- }
- em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
- udev->descriptor.idVendor,udev->descriptor.idProduct,
- ifnum,
- interface->altsetting[0].desc.bInterfaceClass);
- endpoint = &interface->cur_altsetting->endpoint[1].desc;
- /* check if the the device has the iso in endpoint at the correct place */
- if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
- USB_ENDPOINT_XFER_ISOC) {
- em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
- em28xx_devused&=~(1<<nr);
- return -ENODEV;
- }
- if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
- em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
- em28xx_devused&=~(1<<nr);
- return -ENODEV;
- }
- model=id->driver_info;
- if (nr >= EM28XX_MAXBOARDS) {
- printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
- em28xx_devused&=~(1<<nr);
- return -ENOMEM;
- }
- /* allocate memory for our device state and initialize it */
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (dev == NULL) {
- em28xx_err(DRIVER_NAME ": out of memory!\n");
- em28xx_devused&=~(1<<nr);
- return -ENOMEM;
- }
- snprintf(dev->name, 29, "em28xx #%d", nr);
- dev->devno=nr;
- /* compute alternate max packet sizes */
- uif = udev->actconfig->interface[0];
- dev->num_alt=uif->num_altsetting;
- em28xx_info("Alternate settings: %i\n",dev->num_alt);
- // dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)*
- dev->alt_max_pkt_size = kmalloc(32*
- dev->num_alt,GFP_KERNEL);
- if (dev->alt_max_pkt_size == NULL) {
- em28xx_errdev("out of memory!\n");
- em28xx_devused&=~(1<<nr);
- return -ENOMEM;
- }
- for (i = 0; i < dev->num_alt ; i++) {
- u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
- wMaxPacketSize);
- dev->alt_max_pkt_size[i] =
- (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
- em28xx_info("Alternate setting %i, max size= %i\n",i,
- dev->alt_max_pkt_size[i]);
- }
- if ((card[nr]>=0)&&(card[nr]<em28xx_bcount))
- model=card[nr];
- if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) {
- em28xx_errdev( "Your board has no eeprom inside it and thus can't\n"
- "%s: be autodetected. Please pass card=<n> insmod option to\n"
- "%s: workaround that. Redirect complaints to the vendor of\n"
- "%s: the TV card. Generic type will be used."
- "%s: Best regards,\n"
- "%s: -- tux\n",
- dev->name,dev->name,dev->name,dev->name,dev->name);
- em28xx_errdev("%s: Here is a list of valid choices for the card=<n> insmod option:\n",
- dev->name);
- for (i = 0; i < em28xx_bcount; i++) {
- em28xx_errdev(" card=%d -> %s\n", i,
- em28xx_boards[i].name);
- }
- }
- /* allocate device struct */
- retval = em28xx_init_dev(&dev, udev, nr, model);
- if (retval)
- return retval;
- em28xx_info("Found %s\n", em28xx_boards[model].name);
- /* save our data pointer in this interface device */
- usb_set_intfdata(interface, dev);
- return 0;
- }
- /*
- * em28xx_usb_disconnect()
- * called when the device gets diconencted
- * video device will be unregistered on v4l2_close in case it is still open
- */
- static void em28xx_usb_disconnect(struct usb_interface *interface)
- {
- struct em28xx *dev = usb_get_intfdata(interface);
- usb_set_intfdata(interface, NULL);
- if (!dev)
- return;
- down_write(&em28xx_disconnect);
- mutex_lock(&dev->lock);
- em28xx_info("disconnecting %s\n", dev->vdev->name);
- wake_up_interruptible_all(&dev->open);
- if (dev->users) {
- em28xx_warn
- ("device /dev/video%d is open! Deregistration and memory "
- "deallocation are deferred on close.\n",
- dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
- dev->state |= DEV_MISCONFIGURED;
- em28xx_uninit_isoc(dev);
- dev->state |= DEV_DISCONNECTED;
- wake_up_interruptible(&dev->wait_frame);
- wake_up_interruptible(&dev->wait_stream);
- } else {
- dev->state |= DEV_DISCONNECTED;
- em28xx_release_resources(dev);
- }
- mutex_unlock(&dev->lock);
- if (!dev->users) {
- kfree(dev->alt_max_pkt_size);
- kfree(dev);
- }
- up_write(&em28xx_disconnect);
- }
- static struct usb_driver em28xx_usb_driver = {
- .name = "em28xx",
- .probe = em28xx_usb_probe,
- .disconnect = em28xx_usb_disconnect,
- .id_table = em28xx_id_table,
- };
- static int __init em28xx_module_init(void)
- {
- int result;
- printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
- (EM28XX_VERSION_CODE >> 16) & 0xff,
- (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
- #ifdef SNAPSHOT
- printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
- SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
- #endif
- /* register this driver with the USB subsystem */
- result = usb_register(&em28xx_usb_driver);
- if (result)
- em28xx_err(DRIVER_NAME
- " usb_register failed. Error number %d.\n", result);
- return result;
- }
- static void __exit em28xx_module_exit(void)
- {
- /* deregister this driver with the USB subsystem */
- usb_deregister(&em28xx_usb_driver);
- }
- module_init(em28xx_module_init);
- module_exit(em28xx_module_exit);
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