| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jaime Velasco Juan | 6136 | 82.68% | 5 | 9.09% |
| Hans Verkuil | 726 | 9.78% | 15 | 27.27% |
| Hans de Goede | 154 | 2.08% | 2 | 3.64% |
| Mauro Carvalho Chehab | 107 | 1.44% | 5 | 9.09% |
| David Ellingsworth | 93 | 1.25% | 2 | 3.64% |
| Arvydas Sidorenko | 44 | 0.59% | 3 | 5.45% |
| Andreas Pape | 36 | 0.49% | 2 | 3.64% |
| Joe Perches | 36 | 0.49% | 1 | 1.82% |
| Gregor Jasny | 26 | 0.35% | 1 | 1.82% |
| Dan Carpenter | 12 | 0.16% | 2 | 3.64% |
| Sakari Ailus | 10 | 0.13% | 3 | 5.45% |
| Laurent Pinchart | 10 | 0.13% | 1 | 1.82% |
| Roel Kluin | 7 | 0.09% | 1 | 1.82% |
| Julia Lawall | 6 | 0.08% | 1 | 1.82% |
| Linus Torvalds | 3 | 0.04% | 1 | 1.82% |
| Kees Cook | 2 | 0.03% | 1 | 1.82% |
| Adrian Bunk | 2 | 0.03% | 1 | 1.82% |
| Bhumika Goyal | 2 | 0.03% | 2 | 3.64% |
| Al Viro | 2 | 0.03% | 1 | 1.82% |
| Thomas Meyer | 2 | 0.03% | 1 | 1.82% |
| Greg Kroah-Hartman | 2 | 0.03% | 1 | 1.82% |
| Harvey Harrison | 1 | 0.01% | 1 | 1.82% |
| Arvind Yadav | 1 | 0.01% | 1 | 1.82% |
| Alexey Dobriyan | 1 | 0.01% | 1 | 1.82% |
| Total | 7421 | 55 |
/* * stk-webcam.c : Driver for Syntek 1125 USB webcam controller * * Copyright (C) 2006 Nicolas VIVIEN * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com> * * Some parts are inspired from cafe_ccic.c * Copyright 2006-2007 Jonathan Corbet * * 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 * 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. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/dmi.h> #include <linux/usb.h> #include <linux/mm.h> #include <linux/vmalloc.h> #include <linux/videodev2.h> #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-event.h> #include "stk-webcam.h" static int hflip = -1; module_param(hflip, int, 0444); MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 0"); static int vflip = -1; module_param(vflip, int, 0444); MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 0"); static int debug; module_param(debug, int, 0444); MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN"); MODULE_DESCRIPTION("Syntek DC1125 webcam driver"); /* Some cameras have audio interfaces, we aren't interested in those */ static const struct usb_device_id stkwebcam_table[] = { { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) }, { } }; MODULE_DEVICE_TABLE(usb, stkwebcam_table); /* * The stk webcam laptop module is mounted upside down in some laptops :( * * Some background information (thanks to Hans de Goede for providing this): * * 1) Once upon a time the stkwebcam driver was written * * 2) The webcam in question was used mostly in Asus laptop models, including * the laptop of the original author of the driver, and in these models, in * typical Asus fashion (see the long long list for uvc cams inside v4l-utils), * they mounted the webcam-module the wrong way up. So the hflip and vflip * module options were given a default value of 1 (the correct value for * upside down mounted models) * * 3) Years later I got a bug report from a user with a laptop with stkwebcam, * where the module was actually mounted the right way up, and thus showed * upside down under Linux. So now I was facing the choice of 2 options: * * a) Add a not-upside-down list to stkwebcam, which overrules the default. * * b) Do it like all the other drivers do, and make the default right for * cams mounted the proper way and add an upside-down model list, with * models where we need to flip-by-default. * * Despite knowing that going b) would cause a period of pain where we were * building the table I opted to go for option b), since a) is just too ugly, * and worse different from how every other driver does it leading to * confusion in the long run. This change was made in kernel 3.6. * * So for any user report about upside-down images since kernel 3.6 ask them * to provide the output of 'sudo dmidecode' so the laptop can be added in * the table below. */ static const struct dmi_system_id stk_upside_down_dmi_table[] = { { .ident = "ASUS G1", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "G1") } }, { .ident = "ASUS F3JC", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "F3JC") } }, { .ident = "T12Rg-H", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "HCL Infosystems Limited"), DMI_MATCH(DMI_PRODUCT_NAME, "T12Rg-H") } }, { .ident = "ASUS A6VM", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "A6VM") } }, {} }; /* * Basic stuff */ int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value) { struct usb_device *udev = dev->udev; int ret; ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); if (ret < 0) return ret; else return 0; } int stk_camera_read_reg(struct stk_camera *dev, u16 index, u8 *value) { struct usb_device *udev = dev->udev; unsigned char *buf; int ret; buf = kmalloc(sizeof(u8), GFP_KERNEL); if (!buf) return -ENOMEM; ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0x00, index, buf, sizeof(u8), 500); if (ret >= 0) *value = *buf; kfree(buf); if (ret < 0) return ret; else return 0; } static int stk_start_stream(struct stk_camera *dev) { u8 value; int i, ret; u8 value_116, value_117; if (!is_present(dev)) return -ENODEV; if (!is_memallocd(dev) || !is_initialised(dev)) { pr_err("FIXME: Buffers are not allocated\n"); return -EFAULT; } ret = usb_set_interface(dev->udev, 0, 5); if (ret < 0) pr_err("usb_set_interface failed !\n"); if (stk_sensor_wakeup(dev)) pr_err("error awaking the sensor\n"); stk_camera_read_reg(dev, 0x0116, &value_116); stk_camera_read_reg(dev, 0x0117, &value_117); stk_camera_write_reg(dev, 0x0116, 0x0000); stk_camera_write_reg(dev, 0x0117, 0x0000); stk_camera_read_reg(dev, 0x0100, &value); stk_camera_write_reg(dev, 0x0100, value | 0x80); stk_camera_write_reg(dev, 0x0116, value_116); stk_camera_write_reg(dev, 0x0117, value_117); for (i = 0; i < MAX_ISO_BUFS; i++) { if (dev->isobufs[i].urb) { ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL); atomic_inc(&dev->urbs_used); if (ret) return ret; } } set_streaming(dev); return 0; } static int stk_stop_stream(struct stk_camera *dev) { u8 value; int i; if (is_present(dev)) { stk_camera_read_reg(dev, 0x0100, &value); stk_camera_write_reg(dev, 0x0100, value & ~0x80); if (dev->isobufs != NULL) { for (i = 0; i < MAX_ISO_BUFS; i++) { if (dev->isobufs[i].urb) usb_kill_urb(dev->isobufs[i].urb); } } unset_streaming(dev); if (usb_set_interface(dev->udev, 0, 0)) pr_err("usb_set_interface failed !\n"); if (stk_sensor_sleep(dev)) pr_err("error suspending the sensor\n"); } return 0; } /* * This seems to be the shortest init sequence we * must do in order to find the sensor * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor * is also reset. Maybe powers down it? * Rest of values don't make a difference */ static struct regval stk1125_initvals[] = { /*TODO: What means this sequence? */ {0x0000, 0x24}, {0x0100, 0x21}, {0x0002, 0x68}, {0x0003, 0x80}, {0x0005, 0x00}, {0x0007, 0x03}, {0x000d, 0x00}, {0x000f, 0x02}, {0x0300, 0x12}, {0x0350, 0x41}, {0x0351, 0x00}, {0x0352, 0x00}, {0x0353, 0x00}, {0x0018, 0x10}, {0x0019, 0x00}, {0x001b, 0x0e}, {0x001c, 0x46}, {0x0300, 0x80}, {0x001a, 0x04}, {0x0110, 0x00}, {0x0111, 0x00}, {0x0112, 0x00}, {0x0113, 0x00}, {0xffff, 0xff}, }; static int stk_initialise(struct stk_camera *dev) { struct regval *rv; int ret; if (!is_present(dev)) return -ENODEV; if (is_initialised(dev)) return 0; rv = stk1125_initvals; while (rv->reg != 0xffff) { ret = stk_camera_write_reg(dev, rv->reg, rv->val); if (ret) return ret; rv++; } if (stk_sensor_init(dev) == 0) { set_initialised(dev); return 0; } else return -1; } /* *********************************************** */ /* * This function is called as an URB transfert is complete (Isochronous pipe). * So, the traitement is done in interrupt time, so it has be fast, not crash, * and not stall. Neat. */ static void stk_isoc_handler(struct urb *urb) { int i; int ret; int framelen; unsigned long flags; unsigned char *fill = NULL; unsigned char *iso_buf = NULL; struct stk_camera *dev; struct stk_sio_buffer *fb; dev = (struct stk_camera *) urb->context; if (dev == NULL) { pr_err("isoc_handler called with NULL device !\n"); return; } if (urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN) { atomic_dec(&dev->urbs_used); return; } spin_lock_irqsave(&dev->spinlock, flags); if (urb->status != -EINPROGRESS && urb->status != 0) { pr_err("isoc_handler: urb->status == %d\n", urb->status); goto resubmit; } if (list_empty(&dev->sio_avail)) { /*FIXME Stop streaming after a while */ pr_err_ratelimited("isoc_handler without available buffer!\n"); goto resubmit; } fb = list_first_entry(&dev->sio_avail, struct stk_sio_buffer, list); fill = fb->buffer + fb->v4lbuf.bytesused; for (i = 0; i < urb->number_of_packets; i++) { if (urb->iso_frame_desc[i].status != 0) { if (urb->iso_frame_desc[i].status != -EXDEV) pr_err("Frame %d has error %d\n", i, urb->iso_frame_desc[i].status); continue; } framelen = urb->iso_frame_desc[i].actual_length; iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; if (framelen <= 4) continue; /* no data */ /* * we found something informational from there * the isoc frames have to type of headers * type1: 00 xx 00 00 or 20 xx 00 00 * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00 * xx is a sequencer which has never been seen over 0x3f * imho data written down looks like bayer, i see similarities * after every 640 bytes */ if (*iso_buf & 0x80) { framelen -= 8; iso_buf += 8; /* This marks a new frame */ if (fb->v4lbuf.bytesused != 0 && fb->v4lbuf.bytesused != dev->frame_size) { pr_err_ratelimited("frame %d, bytesused=%d, skipping\n", i, fb->v4lbuf.bytesused); fb->v4lbuf.bytesused = 0; fill = fb->buffer; } else if (fb->v4lbuf.bytesused == dev->frame_size) { if (list_is_singular(&dev->sio_avail)) { /* Always reuse the last buffer */ fb->v4lbuf.bytesused = 0; fill = fb->buffer; } else { list_move_tail(dev->sio_avail.next, &dev->sio_full); wake_up(&dev->wait_frame); fb = list_first_entry(&dev->sio_avail, struct stk_sio_buffer, list); fb->v4lbuf.bytesused = 0; fill = fb->buffer; } } } else { framelen -= 4; iso_buf += 4; } /* Our buffer is full !!! */ if (framelen + fb->v4lbuf.bytesused > dev->frame_size) { pr_err_ratelimited("Frame buffer overflow, lost sync\n"); /*FIXME Do something here? */ continue; } spin_unlock_irqrestore(&dev->spinlock, flags); memcpy(fill, iso_buf, framelen); spin_lock_irqsave(&dev->spinlock, flags); fill += framelen; /* New size of our buffer */ fb->v4lbuf.bytesused += framelen; } resubmit: spin_unlock_irqrestore(&dev->spinlock, flags); urb->dev = dev->udev; ret = usb_submit_urb(urb, GFP_ATOMIC); if (ret != 0) { pr_err("Error (%d) re-submitting urb in stk_isoc_handler\n", ret); } } /* -------------------------------------------- */ static int stk_prepare_iso(struct stk_camera *dev) { void *kbuf; int i, j; struct urb *urb; struct usb_device *udev; if (dev == NULL) return -ENXIO; udev = dev->udev; if (dev->isobufs) pr_err("isobufs already allocated. Bad\n"); else dev->isobufs = kcalloc(MAX_ISO_BUFS, sizeof(*dev->isobufs), GFP_KERNEL); if (dev->isobufs == NULL) { pr_err("Unable to allocate iso buffers\n"); return -ENOMEM; } for (i = 0; i < MAX_ISO_BUFS; i++) { if (dev->isobufs[i].data == NULL) { kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); if (kbuf == NULL) { pr_err("Failed to allocate iso buffer %d\n", i); goto isobufs_out; } dev->isobufs[i].data = kbuf; } else pr_err("isobuf data already allocated\n"); if (dev->isobufs[i].urb == NULL) { urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); if (urb == NULL) goto isobufs_out; dev->isobufs[i].urb = urb; } else { pr_err("Killing URB\n"); usb_kill_urb(dev->isobufs[i].urb); urb = dev->isobufs[i].urb; } urb->interval = 1; urb->dev = udev; urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep); urb->transfer_flags = URB_ISO_ASAP; urb->transfer_buffer = dev->isobufs[i].data; urb->transfer_buffer_length = ISO_BUFFER_SIZE; urb->complete = stk_isoc_handler; urb->context = dev; urb->start_frame = 0; urb->number_of_packets = ISO_FRAMES_PER_DESC; for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; } } set_memallocd(dev); return 0; isobufs_out: for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++) kfree(dev->isobufs[i].data); for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++) usb_free_urb(dev->isobufs[i].urb); kfree(dev->isobufs); dev->isobufs = NULL; return -ENOMEM; } static void stk_clean_iso(struct stk_camera *dev) { int i; if (dev == NULL || dev->isobufs == NULL) return; for (i = 0; i < MAX_ISO_BUFS; i++) { struct urb *urb; urb = dev->isobufs[i].urb; if (urb) { if (atomic_read(&dev->urbs_used) && is_present(dev)) usb_kill_urb(urb); usb_free_urb(urb); } kfree(dev->isobufs[i].data); } kfree(dev->isobufs); dev->isobufs = NULL; unset_memallocd(dev); } static int stk_setup_siobuf(struct stk_camera *dev, int index) { struct stk_sio_buffer *buf = dev->sio_bufs + index; INIT_LIST_HEAD(&buf->list); buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size); buf->buffer = vmalloc_user(buf->v4lbuf.length); if (buf->buffer == NULL) return -ENOMEM; buf->mapcount = 0; buf->dev = dev; buf->v4lbuf.index = index; buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; buf->v4lbuf.flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; buf->v4lbuf.field = V4L2_FIELD_NONE; buf->v4lbuf.memory = V4L2_MEMORY_MMAP; buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length; return 0; } static int stk_free_sio_buffers(struct stk_camera *dev) { int i; int nbufs; unsigned long flags; if (dev->n_sbufs == 0 || dev->sio_bufs == NULL) return 0; /* * If any buffers are mapped, we cannot free them at all. */ for (i = 0; i < dev->n_sbufs; i++) { if (dev->sio_bufs[i].mapcount > 0) return -EBUSY; } /* * OK, let's do it. */ spin_lock_irqsave(&dev->spinlock, flags); INIT_LIST_HEAD(&dev->sio_avail); INIT_LIST_HEAD(&dev->sio_full); nbufs = dev->n_sbufs; dev->n_sbufs = 0; spin_unlock_irqrestore(&dev->spinlock, flags); for (i = 0; i < nbufs; i++) vfree(dev->sio_bufs[i].buffer); kfree(dev->sio_bufs); dev->sio_bufs = NULL; return 0; } static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs) { int i; if (dev->sio_bufs != NULL) pr_err("sio_bufs already allocated\n"); else { dev->sio_bufs = kcalloc(n_sbufs, sizeof(struct stk_sio_buffer), GFP_KERNEL); if (dev->sio_bufs == NULL) return -ENOMEM; for (i = 0; i < n_sbufs; i++) { if (stk_setup_siobuf(dev, i)) return (dev->n_sbufs > 1 ? 0 : -ENOMEM); dev->n_sbufs = i+1; } } return 0; } static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs) { int err; err = stk_prepare_iso(dev); if (err) { stk_clean_iso(dev); return err; } err = stk_prepare_sio_buffers(dev, n_sbufs); if (err) { stk_free_sio_buffers(dev); return err; } return 0; } static void stk_free_buffers(struct stk_camera *dev) { stk_clean_iso(dev); stk_free_sio_buffers(dev); } /* -------------------------------------------- */ /* v4l file operations */ static int v4l_stk_open(struct file *fp) { struct stk_camera *dev = video_drvdata(fp); int err; if (dev == NULL || !is_present(dev)) return -ENXIO; if (mutex_lock_interruptible(&dev->lock)) return -ERESTARTSYS; if (!dev->first_init) stk_camera_write_reg(dev, 0x0, 0x24); else dev->first_init = 0; err = v4l2_fh_open(fp); if (!err) usb_autopm_get_interface(dev->interface); mutex_unlock(&dev->lock); return err; } static int v4l_stk_release(struct file *fp) { struct stk_camera *dev = video_drvdata(fp); mutex_lock(&dev->lock); if (dev->owner == fp) { stk_stop_stream(dev); stk_free_buffers(dev); stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */ unset_initialised(dev); dev->owner = NULL; } if (is_present(dev)) usb_autopm_put_interface(dev->interface); mutex_unlock(&dev->lock); return v4l2_fh_release(fp); } static ssize_t stk_read(struct file *fp, char __user *buf, size_t count, loff_t *f_pos) { int i; int ret; unsigned long flags; struct stk_sio_buffer *sbuf; struct stk_camera *dev = video_drvdata(fp); if (!is_present(dev)) return -EIO; if (dev->owner && (!dev->reading || dev->owner != fp)) return -EBUSY; dev->owner = fp; if (!is_streaming(dev)) { if (stk_initialise(dev) || stk_allocate_buffers(dev, 3) || stk_start_stream(dev)) return -ENOMEM; dev->reading = 1; spin_lock_irqsave(&dev->spinlock, flags); for (i = 0; i < dev->n_sbufs; i++) { list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail); dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED; } spin_unlock_irqrestore(&dev->spinlock, flags); } if (*f_pos == 0) { if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) return -EWOULDBLOCK; ret = wait_event_interruptible(dev->wait_frame, !list_empty(&dev->sio_full) || !is_present(dev)); if (ret) return ret; if (!is_present(dev)) return -EIO; } if (count + *f_pos > dev->frame_size) count = dev->frame_size - *f_pos; spin_lock_irqsave(&dev->spinlock, flags); if (list_empty(&dev->sio_full)) { spin_unlock_irqrestore(&dev->spinlock, flags); pr_err("BUG: No siobufs ready\n"); return 0; } sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); spin_unlock_irqrestore(&dev->spinlock, flags); if (copy_to_user(buf, sbuf->buffer + *f_pos, count)) return -EFAULT; *f_pos += count; if (*f_pos >= dev->frame_size) { *f_pos = 0; spin_lock_irqsave(&dev->spinlock, flags); list_move_tail(&sbuf->list, &dev->sio_avail); spin_unlock_irqrestore(&dev->spinlock, flags); } return count; } static ssize_t v4l_stk_read(struct file *fp, char __user *buf, size_t count, loff_t *f_pos) { struct stk_camera *dev = video_drvdata(fp); int ret; if (mutex_lock_interruptible(&dev->lock)) return -ERESTARTSYS; ret = stk_read(fp, buf, count, f_pos); mutex_unlock(&dev->lock); return ret; } static __poll_t v4l_stk_poll(struct file *fp, poll_table *wait) { struct stk_camera *dev = video_drvdata(fp); __poll_t res = v4l2_ctrl_poll(fp, wait); poll_wait(fp, &dev->wait_frame, wait); if (!is_present(dev)) return EPOLLERR; if (!list_empty(&dev->sio_full)) return res | EPOLLIN | EPOLLRDNORM; return res; } static void stk_v4l_vm_open(struct vm_area_struct *vma) { struct stk_sio_buffer *sbuf = vma->vm_private_data; sbuf->mapcount++; } static void stk_v4l_vm_close(struct vm_area_struct *vma) { struct stk_sio_buffer *sbuf = vma->vm_private_data; sbuf->mapcount--; if (sbuf->mapcount == 0) sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED; } static const struct vm_operations_struct stk_v4l_vm_ops = { .open = stk_v4l_vm_open, .close = stk_v4l_vm_close }; static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma) { unsigned int i; int ret; unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; struct stk_camera *dev = video_drvdata(fp); struct stk_sio_buffer *sbuf = NULL; if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) return -EINVAL; for (i = 0; i < dev->n_sbufs; i++) { if (dev->sio_bufs[i].v4lbuf.m.offset == offset) { sbuf = dev->sio_bufs + i; break; } } if (sbuf == NULL) return -EINVAL; ret = remap_vmalloc_range(vma, sbuf->buffer, 0); if (ret) return ret; vma->vm_flags |= VM_DONTEXPAND; vma->vm_private_data = sbuf; vma->vm_ops = &stk_v4l_vm_ops; sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED; stk_v4l_vm_open(vma); return 0; } /* v4l ioctl handlers */ static int stk_vidioc_querycap(struct file *filp, void *priv, struct v4l2_capability *cap) { struct stk_camera *dev = video_drvdata(filp); strscpy(cap->driver, "stk", sizeof(cap->driver)); strscpy(cap->card, "stk", sizeof(cap->card)); usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int stk_vidioc_enum_input(struct file *filp, void *priv, struct v4l2_input *input) { if (input->index != 0) return -EINVAL; strscpy(input->name, "Syntek USB Camera", sizeof(input->name)); input->type = V4L2_INPUT_TYPE_CAMERA; return 0; } static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i) { *i = 0; return 0; } static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i) { return i ? -EINVAL : 0; } static int stk_s_ctrl(struct v4l2_ctrl *ctrl) { struct stk_camera *dev = container_of(ctrl->handler, struct stk_camera, hdl); switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: return stk_sensor_set_brightness(dev, ctrl->val); case V4L2_CID_HFLIP: if (dmi_check_system(stk_upside_down_dmi_table)) dev->vsettings.hflip = !ctrl->val; else dev->vsettings.hflip = ctrl->val; return 0; case V4L2_CID_VFLIP: if (dmi_check_system(stk_upside_down_dmi_table)) dev->vsettings.vflip = !ctrl->val; else dev->vsettings.vflip = ctrl->val; return 0; default: return -EINVAL; } return 0; } static int stk_vidioc_enum_fmt_vid_cap(struct file *filp, void *priv, struct v4l2_fmtdesc *fmtd) { switch (fmtd->index) { case 0: fmtd->pixelformat = V4L2_PIX_FMT_RGB565; strscpy(fmtd->description, "r5g6b5", sizeof(fmtd->description)); break; case 1: fmtd->pixelformat = V4L2_PIX_FMT_RGB565X; strscpy(fmtd->description, "r5g6b5BE", sizeof(fmtd->description)); break; case 2: fmtd->pixelformat = V4L2_PIX_FMT_UYVY; strscpy(fmtd->description, "yuv4:2:2", sizeof(fmtd->description)); break; case 3: fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8; strscpy(fmtd->description, "Raw bayer", sizeof(fmtd->description)); break; case 4: fmtd->pixelformat = V4L2_PIX_FMT_YUYV; strscpy(fmtd->description, "yuv4:2:2", sizeof(fmtd->description)); break; default: return -EINVAL; } return 0; } static struct stk_size { unsigned w; unsigned h; enum stk_mode m; } stk_sizes[] = { { .w = 1280, .h = 1024, .m = MODE_SXGA, }, { .w = 640, .h = 480, .m = MODE_VGA, }, { .w = 352, .h = 288, .m = MODE_CIF, }, { .w = 320, .h = 240, .m = MODE_QVGA, }, { .w = 176, .h = 144, .m = MODE_QCIF, }, }; static int stk_vidioc_g_fmt_vid_cap(struct file *filp, void *priv, struct v4l2_format *f) { struct v4l2_pix_format *pix_format = &f->fmt.pix; struct stk_camera *dev = video_drvdata(filp); int i; for (i = 0; i < ARRAY_SIZE(stk_sizes) && stk_sizes[i].m != dev->vsettings.mode; i++) ; if (i == ARRAY_SIZE(stk_sizes)) { pr_err("ERROR: mode invalid\n"); return -EINVAL; } pix_format->width = stk_sizes[i].w; pix_format->height = stk_sizes[i].h; pix_format->field = V4L2_FIELD_NONE; pix_format->colorspace = V4L2_COLORSPACE_SRGB; pix_format->pixelformat = dev->vsettings.palette; if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) pix_format->bytesperline = pix_format->width; else pix_format->bytesperline = 2 * pix_format->width; pix_format->sizeimage = pix_format->bytesperline * pix_format->height; return 0; } static int stk_try_fmt_vid_cap(struct file *filp, struct v4l2_format *fmtd, int *idx) { int i; switch (fmtd->fmt.pix.pixelformat) { case V4L2_PIX_FMT_RGB565: case V4L2_PIX_FMT_RGB565X: case V4L2_PIX_FMT_UYVY: case V4L2_PIX_FMT_YUYV: case V4L2_PIX_FMT_SBGGR8: break; default: return -EINVAL; } for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) { if (fmtd->fmt.pix.width > stk_sizes[i].w) break; } if (i == ARRAY_SIZE(stk_sizes) || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w) < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) { fmtd->fmt.pix.height = stk_sizes[i-1].h; fmtd->fmt.pix.width = stk_sizes[i-1].w; if (idx) *idx = i - 1; } else { fmtd->fmt.pix.height = stk_sizes[i].h; fmtd->fmt.pix.width = stk_sizes[i].w; if (idx) *idx = i; } fmtd->fmt.pix.field = V4L2_FIELD_NONE; fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8) fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width; else fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width; fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline * fmtd->fmt.pix.height; return 0; } static int stk_vidioc_try_fmt_vid_cap(struct file *filp, void *priv, struct v4l2_format *fmtd) { return stk_try_fmt_vid_cap(filp, fmtd, NULL); } static int stk_setup_format(struct stk_camera *dev) { int i = 0; int depth; if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) depth = 1; else depth = 2; while (i < ARRAY_SIZE(stk_sizes) && stk_sizes[i].m != dev->vsettings.mode) i++; if (i == ARRAY_SIZE(stk_sizes)) { pr_err("Something is broken in %s\n", __func__); return -EFAULT; } /* This registers controls some timings, not sure of what. */ stk_camera_write_reg(dev, 0x001b, 0x0e); if (dev->vsettings.mode == MODE_SXGA) stk_camera_write_reg(dev, 0x001c, 0x0e); else stk_camera_write_reg(dev, 0x001c, 0x46); /* * Registers 0x0115 0x0114 are the size of each line (bytes), * regs 0x0117 0x0116 are the heigth of the image. */ stk_camera_write_reg(dev, 0x0115, ((stk_sizes[i].w * depth) >> 8) & 0xff); stk_camera_write_reg(dev, 0x0114, (stk_sizes[i].w * depth) & 0xff); stk_camera_write_reg(dev, 0x0117, (stk_sizes[i].h >> 8) & 0xff); stk_camera_write_reg(dev, 0x0116, stk_sizes[i].h & 0xff); return stk_sensor_configure(dev); } static int stk_vidioc_s_fmt_vid_cap(struct file *filp, void *priv, struct v4l2_format *fmtd) { int ret; int idx; struct stk_camera *dev = video_drvdata(filp); if (dev == NULL) return -ENODEV; if (!is_present(dev)) return -ENODEV; if (is_streaming(dev)) return -EBUSY; if (dev->owner) return -EBUSY; ret = stk_try_fmt_vid_cap(filp, fmtd, &idx); if (ret) return ret; dev->vsettings.palette = fmtd->fmt.pix.pixelformat; stk_free_buffers(dev); dev->frame_size = fmtd->fmt.pix.sizeimage; dev->vsettings.mode = stk_sizes[idx].m; stk_initialise(dev); return stk_setup_format(dev); } static int stk_vidioc_reqbufs(struct file *filp, void *priv, struct v4l2_requestbuffers *rb) { struct stk_camera *dev = video_drvdata(filp); if (dev == NULL) return -ENODEV; if (rb->memory != V4L2_MEMORY_MMAP) return -EINVAL; if (is_streaming(dev) || (dev->owner && dev->owner != filp)) return -EBUSY; stk_free_buffers(dev); if (rb->count == 0) { stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */ unset_initialised(dev); dev->owner = NULL; return 0; } dev->owner = filp; /*FIXME If they ask for zero, we must stop streaming and free */ if (rb->count < 3) rb->count = 3; /* Arbitrary limit */ else if (rb->count > 5) rb->count = 5; stk_allocate_buffers(dev, rb->count); rb->count = dev->n_sbufs; return 0; } static int stk_vidioc_querybuf(struct file *filp, void *priv, struct v4l2_buffer *buf) { struct stk_camera *dev = video_drvdata(filp); struct stk_sio_buffer *sbuf; if (buf->index >= dev->n_sbufs) return -EINVAL; sbuf = dev->sio_bufs + buf->index; *buf = sbuf->v4lbuf; return 0; } static int stk_vidioc_qbuf(struct file *filp, void *priv, struct v4l2_buffer *buf) { struct stk_camera *dev = video_drvdata(filp); struct stk_sio_buffer *sbuf; unsigned long flags; if (buf->memory != V4L2_MEMORY_MMAP) return -EINVAL; if (buf->index >= dev->n_sbufs) return -EINVAL; sbuf = dev->sio_bufs + buf->index; if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) return 0; sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED; sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE; spin_lock_irqsave(&dev->spinlock, flags); list_add_tail(&sbuf->list, &dev->sio_avail); *buf = sbuf->v4lbuf; spin_unlock_irqrestore(&dev->spinlock, flags); return 0; } static int stk_vidioc_dqbuf(struct file *filp, void *priv, struct v4l2_buffer *buf) { struct stk_camera *dev = video_drvdata(filp); struct stk_sio_buffer *sbuf; unsigned long flags; int ret; if (!is_streaming(dev)) return -EINVAL; if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) return -EWOULDBLOCK; ret = wait_event_interruptible(dev->wait_frame, !list_empty(&dev->sio_full) || !is_present(dev)); if (ret) return ret; if (!is_present(dev)) return -EIO; spin_lock_irqsave(&dev->spinlock, flags); sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); list_del_init(&sbuf->list); spin_unlock_irqrestore(&dev->spinlock, flags); sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED; sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE; sbuf->v4lbuf.sequence = ++dev->sequence; v4l2_get_timestamp(&sbuf->v4lbuf.timestamp); *buf = sbuf->v4lbuf; return 0; } static int stk_vidioc_streamon(struct file *filp, void *priv, enum v4l2_buf_type type) { struct stk_camera *dev = video_drvdata(filp); if (is_streaming(dev)) return 0; if (dev->sio_bufs == NULL) return -EINVAL; dev->sequence = 0; return stk_start_stream(dev); } static int stk_vidioc_streamoff(struct file *filp, void *priv, enum v4l2_buf_type type) { struct stk_camera *dev = video_drvdata(filp); unsigned long flags; int i; stk_stop_stream(dev); spin_lock_irqsave(&dev->spinlock, flags); INIT_LIST_HEAD(&dev->sio_avail); INIT_LIST_HEAD(&dev->sio_full); for (i = 0; i < dev->n_sbufs; i++) { INIT_LIST_HEAD(&dev->sio_bufs[i].list); dev->sio_bufs[i].v4lbuf.flags = 0; } spin_unlock_irqrestore(&dev->spinlock, flags); return 0; } static int stk_vidioc_g_parm(struct file *filp, void *priv, struct v4l2_streamparm *sp) { /*FIXME This is not correct */ sp->parm.capture.timeperframe.numerator = 1; sp->parm.capture.timeperframe.denominator = 30; sp->parm.capture.readbuffers = 2; return 0; } static int stk_vidioc_enum_framesizes(struct file *filp, void *priv, struct v4l2_frmsizeenum *frms) { if (frms->index >= ARRAY_SIZE(stk_sizes)) return -EINVAL; switch (frms->pixel_format) { case V4L2_PIX_FMT_RGB565: case V4L2_PIX_FMT_RGB565X: case V4L2_PIX_FMT_UYVY: case V4L2_PIX_FMT_YUYV: case V4L2_PIX_FMT_SBGGR8: frms->type = V4L2_FRMSIZE_TYPE_DISCRETE; frms->discrete.width = stk_sizes[frms->index].w; frms->discrete.height = stk_sizes[frms->index].h; return 0; default: return -EINVAL; } } static const struct v4l2_ctrl_ops stk_ctrl_ops = { .s_ctrl = stk_s_ctrl, }; static const struct v4l2_file_operations v4l_stk_fops = { .owner = THIS_MODULE, .open = v4l_stk_open, .release = v4l_stk_release, .read = v4l_stk_read, .poll = v4l_stk_poll, .mmap = v4l_stk_mmap, .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = { .vidioc_querycap = stk_vidioc_querycap, .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap, .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap, .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap, .vidioc_enum_input = stk_vidioc_enum_input, .vidioc_s_input = stk_vidioc_s_input, .vidioc_g_input = stk_vidioc_g_input, .vidioc_reqbufs = stk_vidioc_reqbufs, .vidioc_querybuf = stk_vidioc_querybuf, .vidioc_qbuf = stk_vidioc_qbuf, .vidioc_dqbuf = stk_vidioc_dqbuf, .vidioc_streamon = stk_vidioc_streamon, .vidioc_streamoff = stk_vidioc_streamoff, .vidioc_g_parm = stk_vidioc_g_parm, .vidioc_enum_framesizes = stk_vidioc_enum_framesizes, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static void stk_v4l_dev_release(struct video_device *vd) { struct stk_camera *dev = vdev_to_camera(vd); if (dev->sio_bufs != NULL || dev->isobufs != NULL) pr_err("We are leaking memory\n"); usb_put_intf(dev->interface); } static const struct video_device stk_v4l_data = { .name = "stkwebcam", .fops = &v4l_stk_fops, .ioctl_ops = &v4l_stk_ioctl_ops, .release = stk_v4l_dev_release, }; static int stk_register_video_device(struct stk_camera *dev) { int err; dev->vdev = stk_v4l_data; dev->vdev.lock = &dev->lock; dev->vdev.v4l2_dev = &dev->v4l2_dev; video_set_drvdata(&dev->vdev, dev); err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); if (err) pr_err("v4l registration failed\n"); else pr_info("Syntek USB2.0 Camera is now controlling device %s\n", video_device_node_name(&dev->vdev)); return err; } /* USB Stuff */ static int stk_camera_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct v4l2_ctrl_handler *hdl; int err = 0; int i; struct stk_camera *dev = NULL; struct usb_device *udev = interface_to_usbdev(interface); struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL); if (dev == NULL) { pr_err("Out of memory !\n"); return -ENOMEM; } err = v4l2_device_register(&interface->dev, &dev->v4l2_dev); if (err < 0) { dev_err(&udev->dev, "couldn't register v4l2_device\n"); kfree(dev); return err; } hdl = &dev->hdl; v4l2_ctrl_handler_init(hdl, 3); v4l2_ctrl_new_std(hdl, &stk_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 0xff, 0x1, 0x60); v4l2_ctrl_new_std(hdl, &stk_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 1); v4l2_ctrl_new_std(hdl, &stk_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 1); if (hdl->error) { err = hdl->error; dev_err(&udev->dev, "couldn't register control\n"); goto error; } dev->v4l2_dev.ctrl_handler = hdl; spin_lock_init(&dev->spinlock); mutex_init(&dev->lock); init_waitqueue_head(&dev->wait_frame); dev->first_init = 1; /* webcam LED management */ dev->udev = udev; dev->interface = interface; usb_get_intf(interface); if (hflip != -1) dev->vsettings.hflip = hflip; else if (dmi_check_system(stk_upside_down_dmi_table)) dev->vsettings.hflip = 1; else dev->vsettings.hflip = 0; if (vflip != -1) dev->vsettings.vflip = vflip; else if (dmi_check_system(stk_upside_down_dmi_table)) dev->vsettings.vflip = 1; else dev->vsettings.vflip = 0; dev->n_sbufs = 0; set_present(dev); /* Set up the endpoint information * use only the first isoc-in endpoint * for the current alternate setting */ iface_desc = interface->cur_altsetting; for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { endpoint = &iface_desc->endpoint[i].desc; if (!dev->isoc_ep && usb_endpoint_is_isoc_in(endpoint)) { /* we found an isoc in endpoint */ dev->isoc_ep = usb_endpoint_num(endpoint); break; } } if (!dev->isoc_ep) { pr_err("Could not find isoc-in endpoint\n"); err = -ENODEV; goto error; } dev->vsettings.palette = V4L2_PIX_FMT_RGB565; dev->vsettings.mode = MODE_VGA; dev->frame_size = 640 * 480 * 2; INIT_LIST_HEAD(&dev->sio_avail); INIT_LIST_HEAD(&dev->sio_full); usb_set_intfdata(interface, dev); err = stk_register_video_device(dev); if (err) goto error; return 0; error: v4l2_ctrl_handler_free(hdl); v4l2_device_unregister(&dev->v4l2_dev); kfree(dev); return err; } static void stk_camera_disconnect(struct usb_interface *interface) { struct stk_camera *dev = usb_get_intfdata(interface); usb_set_intfdata(interface, NULL); unset_present(dev); wake_up_interruptible(&dev->wait_frame); pr_info("Syntek USB2.0 Camera release resources device %s\n", video_device_node_name(&dev->vdev)); video_unregister_device(&dev->vdev); v4l2_ctrl_handler_free(&dev->hdl); v4l2_device_unregister(&dev->v4l2_dev); kfree(dev); } #ifdef CONFIG_PM static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message) { struct stk_camera *dev = usb_get_intfdata(intf); if (is_streaming(dev)) { stk_stop_stream(dev); /* yes, this is ugly */ set_streaming(dev); } return 0; } static int stk_camera_resume(struct usb_interface *intf) { struct stk_camera *dev = usb_get_intfdata(intf); if (!is_initialised(dev)) return 0; unset_initialised(dev); stk_initialise(dev); stk_camera_write_reg(dev, 0x0, 0x49); stk_setup_format(dev); if (is_streaming(dev)) stk_start_stream(dev); return 0; } #endif static struct usb_driver stk_camera_driver = { .name = "stkwebcam", .probe = stk_camera_probe, .disconnect = stk_camera_disconnect, .id_table = stkwebcam_table, #ifdef CONFIG_PM .suspend = stk_camera_suspend, .resume = stk_camera_resume, #endif }; module_usb_driver(stk_camera_driver);
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