diff options
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-video.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 1933 |
1 files changed, 1933 insertions, 0 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c new file mode 100644 index 000000000000..abec32c175aa --- /dev/null +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -0,0 +1,1933 @@ +/* + 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 ******************************************/ + +static inline unsigned long kvirt_to_pa(unsigned long adr) +{ + unsigned long kva, ret; + + kva = (unsigned long)page_address(vmalloc_to_page((void *)adr)); + kva |= adr & (PAGE_SIZE - 1); + ret = __pa(kva); + return ret; +} + +/* + * 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, pos, page; + 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 = (unsigned long)dev->frame[i].bufmem; + while (size > 0) { /* size is page-aligned */ + page = vmalloc_to_pfn((void *)pos); + if (remap_pfn_range(vma, start, page, PAGE_SIZE, + vma->vm_page_prot)) { + em28xx_videodbg("mmap: rename page map 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); |