| /* |
| 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@brturbo.com.br> |
| Sascha Sommer <saschasommer@freenet.de> |
| |
| 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/usb.h> |
| #include <linux/i2c.h> |
| #include <linux/version.h> |
| #include <linux/video_decoder.h> |
| |
| #include "em28xx.h" |
| #include <media/tuner.h> |
| |
| #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ |
| "Markus Rechberger <mrechberger@gmail.com>, " \ |
| "Mauro Carvalho Chehab <mchehab@brturbo.com.br>, " \ |
| "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 }; |
| module_param_array(card, int, NULL, 0444); |
| MODULE_PARM_DESC(card,"card type"); |
| |
| 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]"); |
| |
| /* 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, |
| } |
| }; |
| |
| static const unsigned char saa7114_i2c_init[] = { |
| 0x00,0x00,0x01,0x08,0x02,0xc4,0x03,0x30,0x04,0x90,0x05,0x90,0x06,0xeb,0x07,0xe0, |
| 0x08,0x88,0x09,0x40,0x0a,0x80,0x0b,0x44,0x0c,0x40,0x0d,0x00,0x0e,0x81,0x0f,0x2a, |
| 0x10,0x06,0x11,0x00,0x12,0xc8,0x13,0x80,0x14,0x00,0x15,0x11,0x16,0x01,0x17,0x42, |
| 0x18,0x40,0x19,0x80,0x40,0x00,0x41,0xff,0x42,0xff,0x43,0xff,0x44,0xff,0x45,0xff, |
| 0x46,0xff,0x47,0xff,0x48,0xff,0x49,0xff,0x4a,0xff,0x4b,0xff,0x4c,0xff,0x4d,0xff, |
| 0x4e,0xff,0x4f,0xff,0x50,0xff,0x51,0xff,0x52,0xff,0x53,0xff,0x54,0x5f,0x55,0xff, |
| 0x56,0xff,0x57,0xff,0x58,0x00,0x59,0x47,0x5a,0x03,0x5b,0x03,0x5d,0x3e,0x5e,0x00, |
| 0x80,0x1c,0x83,0x01,0x84,0xa5,0x85,0x10,0x86,0x45,0x87,0x41,0x88,0xf0,0x88,0x00, |
| 0x88,0xf0,0x90,0x00,0x91,0x08,0x92,0x00,0x93,0x80,0x94,0x08,0x95,0x00,0x96,0xc0, |
| 0x97,0x02,0x98,0x13,0x99,0x00,0x9a,0x38,0x9b,0x01,0x9c,0x80,0x9d,0x02,0x9e,0x06, |
| 0x9f,0x01,0xa0,0x01,0xa1,0x00,0xa2,0x00,0xa4,0x80,0xa5,0x36,0xa6,0x36,0xa8,0x67, |
| 0xa9,0x04,0xaa,0x00,0xac,0x33,0xad,0x02,0xae,0x00,0xb0,0xcd,0xb1,0x04,0xb2,0xcd, |
| 0xb3,0x04,0xb4,0x01,0xb8,0x00,0xb9,0x00,0xba,0x00,0xbb,0x00,0xbc,0x00,0xbd,0x00, |
| 0xbe,0x00,0xbf,0x00 |
| }; |
| |
| #define TVNORMS ARRAY_SIZE(tvnorms) |
| |
| /* supported controls */ |
| static struct v4l2_queryctrl em28xx_qctrl[] = { |
| { |
| .id = V4L2_CID_BRIGHTNESS, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Brightness", |
| .minimum = -128, |
| .maximum = 127, |
| .step = 1, |
| .default_value = 0, |
| .flags = 0, |
| },{ |
| .id = V4L2_CID_CONTRAST, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Contrast", |
| .minimum = 0x0, |
| .maximum = 0x1f, |
| .step = 0x1, |
| .default_value = 0x10, |
| .flags = 0, |
| },{ |
| .id = V4L2_CID_SATURATION, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Saturation", |
| .minimum = 0x0, |
| .maximum = 0x1f, |
| .step = 0x1, |
| .default_value = 0x10, |
| .flags = 0, |
| },{ |
| .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, |
| },{ |
| .id = V4L2_CID_RED_BALANCE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Red chroma balance", |
| .minimum = -128, |
| .maximum = 127, |
| .step = 1, |
| .default_value = 0, |
| .flags = 0, |
| },{ |
| .id = V4L2_CID_BLUE_BALANCE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Blue chroma balance", |
| .minimum = -128, |
| .maximum = 127, |
| .step = 1, |
| .default_value = 0, |
| .flags = 0, |
| },{ |
| .id = V4L2_CID_GAMMA, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Gamma", |
| .minimum = 0x0, |
| .maximum = 0x3f, |
| .step = 0x1, |
| .default_value = 0x20, |
| .flags = 0, |
| } |
| }; |
| |
| static struct usb_driver em28xx_usb_driver; |
| |
| static DECLARE_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_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 video_decoder_init em28xx_vdi = {.data = NULL }; |
| |
| |
| /* configure decoder */ |
| if(dev->model == EM2820_BOARD_MSI_VOX_USB_2){ |
| em28xx_vdi.data=saa7114_i2c_init; |
| em28xx_vdi.len=sizeof(saa7114_i2c_init); |
| } |
| |
| |
| em28xx_i2c_call_clients(dev, DECODER_INIT, &em28xx_vdi); |
| em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &dev->ctl_input); |
| /* em28xx_i2c_call_clients(dev,DECODER_SET_PICTURE, &dev->vpic); */ |
| /* em28xx_i2c_call_clients(dev,DECODER_SET_NORM,&dev->tvnorm->id); */ |
| /* em28xx_i2c_call_clients(dev,DECODER_ENABLE_OUTPUT,&output); */ |
| /* em28xx_i2c_call_clients(dev,DECODER_DUMP, 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 input, ainput; |
| |
| input = INPUT(index)->vmux; |
| dev->ctl_input = index; |
| dev->ctl_ainput = INPUT(index)->amux; |
| |
| em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &input); |
| |
| |
| em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,input,dev->ctl_ainput); |
| |
| if (dev->has_msp34xx) { |
| em28xx_i2c_call_clients(dev, VIDIOC_S_AUDIO, &dev->ctl_ainput); |
| 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; |
| } |
| } |
| |
| filp->private_data=dev; |
| |
| |
| em28xx_videodbg("users=%d\n", 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; |
| } |
| |
| /* if(dev->vbi_dev->minor == minor){ |
| dev->type=V4L2_BUF_TYPE_VBI_CAPTURE; |
| }*/ |
| if (dev->vdev->minor == minor) { |
| dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| } |
| |
| init_MUTEX(&dev->fileop_lock); /* to 1 == available */ |
| spin_lock_init(&dev->queue_lock); |
| init_waitqueue_head(&dev->wait_frame); |
| init_waitqueue_head(&dev->wait_stream); |
| |
| down(&dev->lock); |
| |
| 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); |
| |
| /* 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; |
| |
| video_mux(dev, 0); |
| |
| err: |
| up(&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) |
| { |
| down(&em28xx_sysfs_lock); |
| |
| em28xx_info("V4L2 device /dev/video%d deregistered\n", |
| dev->vdev->minor); |
| list_del(&dev->devlist); |
| video_unregister_device(dev->vdev); |
| /* video_unregister_device(dev->vbi_dev); */ |
| em28xx_i2c_unregister(dev); |
| usb_put_dev(dev->udev); |
| up(&em28xx_sysfs_lock); |
| } |
| |
| /* |
| * 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); |
| |
| down(&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); |
| up(&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); |
| up(&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 (down_interruptible(&dev->fileop_lock)) |
| return -ERESTARTSYS; |
| |
| if (dev->state & DEV_DISCONNECTED) { |
| em28xx_videodbg("device not present\n"); |
| up(&dev->fileop_lock); |
| return -ENODEV; |
| } |
| |
| if (dev->state & DEV_MISCONFIGURED) { |
| em28xx_videodbg("device misconfigured; close and open it again\n"); |
| up(&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"); |
| up(&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"); |
| up(&dev->fileop_lock); |
| return -ENOMEM; |
| } |
| dev->io = IO_READ; |
| dev->stream = STREAM_ON; |
| em28xx_queue_unusedframes(dev); |
| } |
| |
| if (!count) { |
| up(&dev->fileop_lock); |
| return 0; |
| } |
| |
| if (list_empty(&dev->outqueue)) { |
| if (filp->f_flags & O_NONBLOCK) { |
| up(&dev->fileop_lock); |
| return -EAGAIN; |
| } |
| ret = wait_event_interruptible |
| (dev->wait_frame, |
| (!list_empty(&dev->outqueue)) || |
| (dev->state & DEV_DISCONNECTED)); |
| if (ret) { |
| up(&dev->fileop_lock); |
| return ret; |
| } |
| if (dev->state & DEV_DISCONNECTED) { |
| up(&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)) { |
| up(&dev->fileop_lock); |
| return -EFAULT; |
| } |
| *f_pos += count; |
| |
| up(&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 (down_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; |
| |
| up(&dev->fileop_lock); |
| |
| return mask; |
| } |
| } |
| |
| up(&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 (down_interruptible(&dev->fileop_lock)) |
| return -ERESTARTSYS; |
| |
| if (dev->state & DEV_DISCONNECTED) { |
| em28xx_videodbg("mmap: device not present\n"); |
| up(&dev->fileop_lock); |
| return -ENODEV; |
| } |
| |
| if (dev->state & DEV_MISCONFIGURED) { |
| em28xx_videodbg ("mmap: Device is misconfigured; close and " |
| "open it again\n"); |
| up(&dev->fileop_lock); |
| return -EIO; |
| } |
| |
| if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) || |
| size != PAGE_ALIGN(dev->frame[0].buf.length)) { |
| up(&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"); |
| up(&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"); |
| up(&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); |
| up(&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) |
| { |
| s32 tmp; |
| 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; |
| case V4L2_CID_BRIGHTNESS: |
| if ((tmp = em28xx_brightness_get(dev)) < 0) |
| return -EIO; |
| ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */ |
| return 0; |
| case V4L2_CID_CONTRAST: |
| if ((ctrl->value = em28xx_contrast_get(dev)) < 0) |
| return -EIO; |
| return 0; |
| case V4L2_CID_SATURATION: |
| if ((ctrl->value = em28xx_saturation_get(dev)) < 0) |
| return -EIO; |
| return 0; |
| case V4L2_CID_RED_BALANCE: |
| if ((tmp = em28xx_v_balance_get(dev)) < 0) |
| return -EIO; |
| ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */ |
| return 0; |
| case V4L2_CID_BLUE_BALANCE: |
| if ((tmp = em28xx_u_balance_get(dev)) < 0) |
| return -EIO; |
| ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */ |
| return 0; |
| case V4L2_CID_GAMMA: |
| if ((ctrl->value = em28xx_gamma_get(dev)) < 0) |
| return -EIO; |
| 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); |
| case V4L2_CID_BRIGHTNESS: |
| return em28xx_brightness_set(dev, ctrl->value); |
| case V4L2_CID_CONTRAST: |
| return em28xx_contrast_set(dev, ctrl->value); |
| case V4L2_CID_SATURATION: |
| return em28xx_saturation_set(dev, ctrl->value); |
| case V4L2_CID_RED_BALANCE: |
| return em28xx_v_balance_set(dev, ctrl->value); |
| case V4L2_CID_BLUE_BALANCE: |
| return em28xx_u_balance_set(dev, ctrl->value); |
| case V4L2_CID_GAMMA: |
| return em28xx_gamma_set(dev, ctrl->value); |
| 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); |
| 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; |
| } |
| |
| /* |
| * 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; |
| |
| down(&dev->lock); |
| dev->tvnorm = &tvnorms[i]; |
| |
| em28xx_set_norm(dev, dev->width, dev->height); |
| |
| /* |
| 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; |
| dev->bytesperline=dev->width*2; |
| dev->hscale=0; |
| dev->vscale=0; |
| |
| em28xx_resolution_set(dev); |
| */ |
| /* |
| em28xx_uninit_isoc(dev); |
| em28xx_set_alternate(dev); |
| em28xx_capture_start(dev, 1); |
| em28xx_resolution_set(dev); |
| em28xx_init_isoc(dev); |
| */ |
| em28xx_i2c_call_clients(dev, DECODER_SET_NORM, |
| &tvnorms[i].mode); |
| em28xx_i2c_call_clients(dev, VIDIOC_S_STD, |
| &dev->tvnorm->id); |
| |
| up(&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; |
| |
| down(&dev->lock); |
| video_mux(dev, *index); |
| up(&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; |
| u8 i, n; |
| n = sizeof(em28xx_qctrl) / sizeof(em28xx_qctrl[0]); |
| for (i = 0; i < n; i++) |
| if (qc->id && qc->id == em28xx_qctrl[i].id) { |
| memcpy(qc, &(em28xx_qctrl[i]), |
| sizeof(*qc)); |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| case VIDIOC_G_CTRL: |
| { |
| struct v4l2_control *ctrl = arg; |
| |
| |
| return em28xx_get_ctrl(dev, ctrl); |
| } |
| |
| case VIDIOC_S_CTRL_OLD: /* ??? */ |
| case VIDIOC_S_CTRL: |
| { |
| struct v4l2_control *ctrl = arg; |
| u8 i, n; |
| |
| |
| n = sizeof(em28xx_qctrl) / sizeof(em28xx_qctrl[0]); |
| for (i = 0; i < n; 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); |
| } |
| return -EINVAL; |
| } |
| |
| /* --- tuner ioctls ------------------------------------------ */ |
| case VIDIOC_G_TUNER: |
| { |
| struct v4l2_tuner *t = arg; |
| int status = 0; |
| |
| if (0 != t->index) |
| return -EINVAL; |
| |
| memset(t, 0, sizeof(*t)); |
| strcpy(t->name, "Tuner"); |
| t->type = V4L2_TUNER_ANALOG_TV; |
| t->capability = V4L2_TUNER_CAP_NORM; |
| t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */ |
| /* t->signal = 0xffff;*/ |
| /* em28xx_i2c_call_clients(dev,VIDIOC_G_TUNER,t);*/ |
| /* No way to get signal strength? */ |
| down(&dev->lock); |
| em28xx_i2c_call_clients(dev, DECODER_GET_STATUS, |
| &status); |
| up(&dev->lock); |
| t->signal = |
| (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0; |
| |
| 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; |
| int status = 0; |
| |
| if (0 != t->index) |
| return -EINVAL; |
| memset(t, 0, sizeof(*t)); |
| strcpy(t->name, "Tuner"); |
| t->type = V4L2_TUNER_ANALOG_TV; |
| t->capability = V4L2_TUNER_CAP_NORM; |
| t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */ |
| /* t->signal = 0xffff; */ |
| /* No way to get signal strength? */ |
| down(&dev->lock); |
| em28xx_i2c_call_clients(dev, DECODER_GET_STATUS, |
| &status); |
| up(&dev->lock); |
| t->signal = |
| (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0; |
| |
| em28xx_videodbg("VIDIO_S_TUNER: signal=%x, afc=%x\n", |
| t->signal, t->afc); |
| 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; |
| |
| down(&dev->lock); |
| dev->ctl_freq = f->frequency; |
| em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f); |
| up(&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) |
| em28xx_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_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: |
| { |
| struct v4l2_format *format = arg; |
| |
| 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 " : |
| "not supported"); |
| |
| if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| 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); |
| return 0; |
| } |
| |
| case VIDIOC_TRY_FMT: |
| case VIDIOC_S_FMT: |
| { |
| struct v4l2_format *format = arg; |
| 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 both_fields; */ |
| |
| 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_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; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ |
| dev->bytesperline = dev->width * 2; |
| dev->hscale = hscale; |
| dev->vscale = vscale; |
| /* dev->both_fileds = both_fileds; */ |
| em28xx_uninit_isoc(dev); |
| em28xx_set_alternate(dev); |
| em28xx_capture_start(dev, 1); |
| em28xx_resolution_set(dev); |
| em28xx_init_isoc(dev); |
| |
| return 0; |
| } |
| |
| /* --- streaming capture ------------------------------------- */ |
| 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 (down_interruptible(&dev->fileop_lock)) |
| return -ERESTARTSYS; |
| |
| if (dev->state & DEV_DISCONNECTED) { |
| em28xx_errdev("v4l2 ioctl: device not present\n"); |
| up(&dev->fileop_lock); |
| return -ENODEV; |
| } |
| |
| if (dev->state & DEV_MISCONFIGURED) { |
| em28xx_errdev |
| ("v4l2 ioctl: device is misconfigured; close and open it again\n"); |
| up(&dev->fileop_lock); |
| return -EIO; |
| } |
| |
| ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl); |
| |
| up(&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, |
| }; |
| |
| /******************************** 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; |
| init_MUTEX(&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; |
| |
| #ifdef CONFIG_MODULES |
| /* request some modules */ |
| if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114) |
| request_module("saa711x"); |
| if (dev->decoder == EM28XX_TVP5150) |
| request_module("tvp5150"); |
| if (dev->has_tuner) |
| request_module("tuner"); |
| if (dev->tda9887_conf) |
| request_module("tda9887"); |
| #endif |
| errCode = em28xx_config(dev); |
| if (errCode) { |
| em28xx_errdev("error configuring device\n"); |
| kfree(dev); |
| return -ENOMEM; |
| } |
| |
| down(&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); |
| |
| up(&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"); |
| kfree(dev); |
| return -ENOMEM; |
| } |
| |
| 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->vdev->name), "%s", |
| "em28xx video"); |
| list_add_tail(&dev->devlist,&em28xx_devlist); |
| |
| /* register v4l2 device */ |
| down(&dev->lock); |
| if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1))) { |
| em28xx_errdev("unable to register video device (error=%i).\n", |
| retval); |
| up(&dev->lock); |
| list_del(&dev->devlist); |
| video_device_release(dev->vdev); |
| kfree(dev); |
| return -ENODEV; |
| } |
| 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); |
| |
| up(&dev->lock); |
| |
| em28xx_info("V4L2 device registered as /dev/video%d\n", |
| dev->vdev->minor); |
| |
| 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; |
| |
| |
| /* 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); |
| 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"); |
| return -ENODEV; |
| } |
| if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { |
| em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); |
| return -ENODEV; |
| } |
| |
| model=id->driver_info; |
| nr=interface->minor; |
| |
| if (nr>EM28XX_MAXBOARDS) { |
| printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); |
| return -ENOMEM; |
| } |
| |
| /* allocate memory for our device state and initialize it */ |
| dev = kmalloc(sizeof(*dev), GFP_KERNEL); |
| if (dev == NULL) { |
| em28xx_err(DRIVER_NAME ": out of memory!\n"); |
| return -ENOMEM; |
| } |
| memset(dev, 0, sizeof(*dev)); |
| |
| /* compute alternate max packet sizes */ |
| uif = udev->actconfig->interface[0]; |
| |
| dev->num_alt=uif->num_altsetting; |
| printk(DRIVER_NAME ": 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_err(DRIVER_NAME ": out of memory!\n"); |
| 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); |
| printk(DRIVER_NAME ": Alternate setting %i, max size= %i\n",i, |
| dev->alt_max_pkt_size[i]); |
| } |
| |
| snprintf(dev->name, 29, "em28xx #%d", nr); |
| |
| if ((card[nr]>=0)&&(card[nr]<em28xx_bcount)) |
| model=card[nr]; |
| |
| if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) { |
| printk( "%s: 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. Best regards,\n" |
| "%s: -- tux\n", |
| dev->name,dev->name,dev->name,dev->name,dev->name); |
| printk("%s: Here is a list of valid choices for the card=<n> insmod option:\n", |
| dev->name); |
| for (i = 0; i < em28xx_bcount; i++) { |
| printk("%s: card=%d -> %s\n", |
| dev->name, 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); |
| |
| down(&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); |
| 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); |
| } |
| |
| up(&dev->lock); |
| |
| if (!dev->users) { |
| kfree(dev->alt_max_pkt_size); |
| kfree(dev); |
| } |
| |
| up_write(&em28xx_disconnect); |
| } |
| |
| static struct usb_driver em28xx_usb_driver = { |
| .owner = THIS_MODULE, |
| .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); |