1112fb68ae
Signed-off-by: Jaime Velasco Juan <jsagarribay@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
1471 lines
35 KiB
C
1471 lines
35 KiB
C
/*
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* stk-webcam.c : Driver for Syntek 1125 USB webcam controller
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*
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* Copyright (C) 2006 Nicolas VIVIEN
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* Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
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*
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* Some parts are inspired from cafe_ccic.c
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* Copyright 2006-2007 Jonathan Corbet
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/kref.h>
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#include <linux/usb.h>
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#include <linux/vmalloc.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-common.h>
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#include "stk-webcam.h"
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static int hflip = 1;
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module_param(hflip, bool, 0444);
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MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 1");
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static int vflip = 1;
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module_param(vflip, bool, 0444);
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MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 1");
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static int debug;
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module_param(debug, int, 0444);
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MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN");
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MODULE_DESCRIPTION("Syntek DC1125 webcam driver");
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/* Some cameras have audio interfaces, we aren't interested in those */
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static struct usb_device_id stkwebcam_table[] = {
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{ USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) },
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{ USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) },
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{ }
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};
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MODULE_DEVICE_TABLE(usb, stkwebcam_table);
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void stk_camera_cleanup(struct kref *kref)
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{
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struct stk_camera *dev = to_stk_camera(kref);
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STK_INFO("Syntek USB2.0 Camera release resources"
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" video device /dev/video%d\n", dev->vdev.minor);
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video_unregister_device(&dev->vdev);
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dev->vdev.priv = NULL;
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if (dev->sio_bufs != NULL || dev->isobufs != NULL)
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STK_ERROR("We are leaking memory\n");
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usb_put_intf(dev->interface);
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kfree(dev);
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}
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/*
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* Basic stuff
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*/
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int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value)
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{
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struct usb_device *udev = dev->udev;
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int ret;
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ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0x01,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value,
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index,
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NULL,
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0,
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500);
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if (ret < 0)
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return ret;
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else
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return 0;
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}
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int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value)
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{
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struct usb_device *udev = dev->udev;
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int ret;
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ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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0x00,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0x00,
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index,
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(u8 *) value,
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sizeof(u8),
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500);
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if (ret < 0)
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return ret;
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else
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return 0;
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}
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static int stk_start_stream(struct stk_camera *dev)
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{
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int value;
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int i, ret;
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int value_116, value_117;
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if (!is_present(dev))
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return -ENODEV;
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if (!is_memallocd(dev) || !is_initialised(dev)) {
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STK_ERROR("FIXME: Buffers are not allocated\n");
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return -EFAULT;
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}
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ret = usb_set_interface(dev->udev, 0, 5);
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if (ret < 0)
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STK_ERROR("usb_set_interface failed !\n");
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if (stk_sensor_wakeup(dev))
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STK_ERROR("error awaking the sensor\n");
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stk_camera_read_reg(dev, 0x0116, &value_116);
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stk_camera_read_reg(dev, 0x0117, &value_117);
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stk_camera_write_reg(dev, 0x0116, 0x0000);
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stk_camera_write_reg(dev, 0x0117, 0x0000);
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stk_camera_read_reg(dev, 0x0100, &value);
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stk_camera_write_reg(dev, 0x0100, value | 0x80);
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stk_camera_write_reg(dev, 0x0116, value_116);
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stk_camera_write_reg(dev, 0x0117, value_117);
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for (i = 0; i < MAX_ISO_BUFS; i++) {
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if (dev->isobufs[i].urb) {
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ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL);
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atomic_inc(&dev->urbs_used);
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if (ret)
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return ret;
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}
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}
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set_streaming(dev);
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return 0;
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}
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static int stk_stop_stream(struct stk_camera *dev)
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{
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int value;
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int i;
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if (is_present(dev)) {
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stk_camera_read_reg(dev, 0x0100, &value);
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stk_camera_write_reg(dev, 0x0100, value & ~0x80);
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if (dev->isobufs != NULL) {
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for (i = 0; i < MAX_ISO_BUFS; i++) {
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if (dev->isobufs[i].urb)
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usb_kill_urb(dev->isobufs[i].urb);
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}
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}
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unset_streaming(dev);
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if (usb_set_interface(dev->udev, 0, 0))
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STK_ERROR("usb_set_interface failed !\n");
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if (stk_sensor_sleep(dev))
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STK_ERROR("error suspending the sensor\n");
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}
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return 0;
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}
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/*
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* This seems to be the shortest init sequence we
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* must do in order to find the sensor
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* Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor
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* is also reset. Maybe powers down it?
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* Rest of values don't make a difference
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*/
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static struct regval stk1125_initvals[] = {
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/*TODO: What means this sequence? */
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{0x0000, 0x24},
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{0x0100, 0x21},
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{0x0002, 0x68},
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{0x0003, 0x80},
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{0x0005, 0x00},
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{0x0007, 0x03},
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{0x000d, 0x00},
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{0x000f, 0x02},
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{0x0300, 0x12},
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{0x0350, 0x41},
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{0x0351, 0x00},
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{0x0352, 0x00},
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{0x0353, 0x00},
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{0x0018, 0x10},
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{0x0019, 0x00},
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{0x001b, 0x0e},
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{0x001c, 0x46},
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{0x0300, 0x80},
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{0x001a, 0x04},
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{0x0110, 0x00},
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{0x0111, 0x00},
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{0x0112, 0x00},
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{0x0113, 0x00},
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{0xffff, 0xff},
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};
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static int stk_initialise(struct stk_camera *dev)
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{
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struct regval *rv;
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int ret;
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if (!is_present(dev))
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return -ENODEV;
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if (is_initialised(dev))
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return 0;
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rv = stk1125_initvals;
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while (rv->reg != 0xffff) {
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ret = stk_camera_write_reg(dev, rv->reg, rv->val);
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if (ret)
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return ret;
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rv++;
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}
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if (stk_sensor_init(dev) == 0) {
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set_initialised(dev);
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return 0;
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} else
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return -1;
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}
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/* sysfs functions */
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/*FIXME cleanup this */
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static ssize_t show_brightness(struct device *class,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(class);
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struct stk_camera *dev = vdev_to_camera(vdev);
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return sprintf(buf, "%X\n", dev->vsettings.brightness);
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}
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static ssize_t store_brightness(struct device *class,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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char *endp;
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unsigned long value;
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int ret;
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struct video_device *vdev = to_video_device(class);
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struct stk_camera *dev = vdev_to_camera(vdev);
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value = simple_strtoul(buf, &endp, 16);
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dev->vsettings.brightness = (int) value;
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ret = stk_sensor_set_brightness(dev, value >> 8);
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if (ret)
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return ret;
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else
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return count;
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}
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static ssize_t show_hflip(struct device *class,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(class);
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struct stk_camera *dev = vdev_to_camera(vdev);
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return sprintf(buf, "%d\n", dev->vsettings.hflip);
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}
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static ssize_t store_hflip(struct device *class,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct video_device *vdev = to_video_device(class);
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struct stk_camera *dev = vdev_to_camera(vdev);
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if (strncmp(buf, "1", 1) == 0)
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dev->vsettings.hflip = 1;
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else if (strncmp(buf, "0", 1) == 0)
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dev->vsettings.hflip = 0;
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else
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return -EINVAL;
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return strlen(buf);
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}
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static ssize_t show_vflip(struct device *class,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(class);
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struct stk_camera *dev = vdev_to_camera(vdev);
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return sprintf(buf, "%d\n", dev->vsettings.vflip);
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}
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static ssize_t store_vflip(struct device *class,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct video_device *vdev = to_video_device(class);
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struct stk_camera *dev = vdev_to_camera(vdev);
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if (strncmp(buf, "1", 1) == 0)
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dev->vsettings.vflip = 1;
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else if (strncmp(buf, "0", 1) == 0)
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dev->vsettings.vflip = 0;
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else
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return -EINVAL;
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return strlen(buf);
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}
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static DEVICE_ATTR(brightness, S_IRUGO | S_IWUGO,
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show_brightness, store_brightness);
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static DEVICE_ATTR(hflip, S_IRUGO | S_IWUGO, show_hflip, store_hflip);
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static DEVICE_ATTR(vflip, S_IRUGO | S_IWUGO, show_vflip, store_vflip);
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static int stk_create_sysfs_files(struct video_device *vdev)
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{
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int ret;
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ret = video_device_create_file(vdev, &dev_attr_brightness);
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ret += video_device_create_file(vdev, &dev_attr_hflip);
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ret += video_device_create_file(vdev, &dev_attr_vflip);
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return ret;
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}
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static void stk_remove_sysfs_files(struct video_device *vdev)
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{
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video_device_remove_file(vdev, &dev_attr_brightness);
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video_device_remove_file(vdev, &dev_attr_hflip);
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video_device_remove_file(vdev, &dev_attr_vflip);
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}
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/* *********************************************** */
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/*
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* This function is called as an URB transfert is complete (Isochronous pipe).
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* So, the traitement is done in interrupt time, so it has be fast, not crash,
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* and not stall. Neat.
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*/
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static void stk_isoc_handler(struct urb *urb)
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{
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int i;
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int ret;
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int framelen;
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unsigned long flags;
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unsigned char *fill = NULL;
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unsigned char *iso_buf = NULL;
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struct stk_camera *dev;
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struct stk_sio_buffer *fb;
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dev = (struct stk_camera *) urb->context;
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if (dev == NULL) {
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STK_ERROR("isoc_handler called with NULL device !\n");
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return;
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}
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if (urb->status == -ENOENT || urb->status == -ECONNRESET
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|| urb->status == -ESHUTDOWN) {
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atomic_dec(&dev->urbs_used);
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return;
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}
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spin_lock_irqsave(&dev->spinlock, flags);
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if (urb->status != -EINPROGRESS && urb->status != 0) {
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STK_ERROR("isoc_handler: urb->status == %d\n", urb->status);
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goto resubmit;
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}
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if (list_empty(&dev->sio_avail)) {
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/*FIXME Stop streaming after a while */
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(void) (printk_ratelimit() &&
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STK_ERROR("isoc_handler without available buffer!\n"));
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goto resubmit;
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}
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fb = list_first_entry(&dev->sio_avail,
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struct stk_sio_buffer, list);
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fill = fb->buffer + fb->v4lbuf.bytesused;
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for (i = 0; i < urb->number_of_packets; i++) {
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if (urb->iso_frame_desc[i].status != 0) {
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if (urb->iso_frame_desc[i].status != -EXDEV)
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STK_ERROR("Frame %d has error %d\n", i,
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urb->iso_frame_desc[i].status);
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continue;
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}
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framelen = urb->iso_frame_desc[i].actual_length;
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iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
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if (framelen <= 4)
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continue; /* no data */
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/*
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* we found something informational from there
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* the isoc frames have to type of headers
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* type1: 00 xx 00 00 or 20 xx 00 00
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* type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00
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* xx is a sequencer which has never been seen over 0x3f
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* imho data written down looks like bayer, i see similarities
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* after every 640 bytes
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*/
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if (*iso_buf & 0x80) {
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framelen -= 8;
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iso_buf += 8;
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/* This marks a new frame */
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if (fb->v4lbuf.bytesused != 0
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&& fb->v4lbuf.bytesused != dev->frame_size) {
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(void) (printk_ratelimit() &&
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STK_ERROR("frame %d, "
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"bytesused=%d, skipping\n",
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i, fb->v4lbuf.bytesused));
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fb->v4lbuf.bytesused = 0;
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fill = fb->buffer;
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} else if (fb->v4lbuf.bytesused == dev->frame_size) {
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list_move_tail(dev->sio_avail.next,
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&dev->sio_full);
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wake_up(&dev->wait_frame);
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if (list_empty(&dev->sio_avail)) {
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(void) (printk_ratelimit() &&
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STK_ERROR("No buffer available\n"));
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goto resubmit;
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}
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fb = list_first_entry(&dev->sio_avail,
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struct stk_sio_buffer, list);
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fb->v4lbuf.bytesused = 0;
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fill = fb->buffer;
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}
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} else {
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framelen -= 4;
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iso_buf += 4;
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}
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/* Our buffer is full !!! */
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if (framelen + fb->v4lbuf.bytesused > dev->frame_size) {
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(void) (printk_ratelimit() &&
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STK_ERROR("Frame buffer overflow, lost sync\n"));
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/*FIXME Do something here? */
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continue;
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}
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spin_unlock_irqrestore(&dev->spinlock, flags);
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memcpy(fill, iso_buf, framelen);
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spin_lock_irqsave(&dev->spinlock, flags);
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fill += framelen;
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/* New size of our buffer */
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fb->v4lbuf.bytesused += framelen;
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}
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resubmit:
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spin_unlock_irqrestore(&dev->spinlock, flags);
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urb->dev = dev->udev;
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ret = usb_submit_urb(urb, GFP_ATOMIC);
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if (ret != 0) {
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STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n",
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ret);
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}
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}
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/* -------------------------------------------- */
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static int stk_prepare_iso(struct stk_camera *dev)
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{
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void *kbuf;
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int i, j;
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struct urb *urb;
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struct usb_device *udev;
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if (dev == NULL)
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return -ENXIO;
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udev = dev->udev;
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if (dev->isobufs)
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STK_ERROR("isobufs already allocated. Bad\n");
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else
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dev->isobufs = kzalloc(MAX_ISO_BUFS * sizeof(*dev->isobufs),
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GFP_KERNEL);
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if (dev->isobufs == NULL) {
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STK_ERROR("Unable to allocate iso buffers\n");
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return -ENOMEM;
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}
|
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
|
if (dev->isobufs[i].data == NULL) {
|
|
kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
|
|
if (kbuf == NULL) {
|
|
STK_ERROR("Failed to allocate iso buffer %d\n",
|
|
i);
|
|
goto isobufs_out;
|
|
}
|
|
dev->isobufs[i].data = kbuf;
|
|
} else
|
|
STK_ERROR("isobuf data already allocated\n");
|
|
if (dev->isobufs[i].urb == NULL) {
|
|
urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
|
|
if (urb == NULL) {
|
|
STK_ERROR("Failed to allocate URB %d\n", i);
|
|
goto isobufs_out;
|
|
}
|
|
dev->isobufs[i].urb = urb;
|
|
} else {
|
|
STK_ERROR("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))
|
|
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.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++) {
|
|
if (dev->sio_bufs[i].buffer != NULL)
|
|
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)
|
|
STK_ERROR("sio_bufs already allocated\n");
|
|
else {
|
|
dev->sio_bufs = kzalloc(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 inode *inode, struct file *fp)
|
|
{
|
|
struct stk_camera *dev;
|
|
struct video_device *vdev;
|
|
|
|
vdev = video_devdata(fp);
|
|
dev = vdev_to_camera(vdev);
|
|
|
|
if (dev == NULL || !is_present(dev))
|
|
return -ENXIO;
|
|
fp->private_data = vdev;
|
|
kref_get(&dev->kref);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int v4l_stk_release(struct inode *inode, struct file *fp)
|
|
{
|
|
struct stk_camera *dev;
|
|
struct video_device *vdev;
|
|
|
|
vdev = video_devdata(fp);
|
|
if (vdev == NULL) {
|
|
STK_ERROR("v4l_release called w/o video devdata\n");
|
|
return -EFAULT;
|
|
}
|
|
dev = vdev_to_camera(vdev);
|
|
if (dev == NULL) {
|
|
STK_ERROR("v4l_release called on removed device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (dev->owner != fp) {
|
|
kref_put(&dev->kref, stk_camera_cleanup);
|
|
return 0;
|
|
}
|
|
|
|
stk_stop_stream(dev);
|
|
|
|
stk_free_buffers(dev);
|
|
|
|
dev->owner = NULL;
|
|
|
|
kref_put(&dev->kref, stk_camera_cleanup);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
|
|
size_t count, loff_t *f_pos)
|
|
{
|
|
int i;
|
|
int ret;
|
|
unsigned long flags;
|
|
struct stk_camera *dev;
|
|
struct video_device *vdev;
|
|
struct stk_sio_buffer *sbuf;
|
|
|
|
vdev = video_devdata(fp);
|
|
if (vdev == NULL)
|
|
return -EFAULT;
|
|
dev = vdev_to_camera(vdev);
|
|
|
|
if (dev == NULL)
|
|
return -EIO;
|
|
|
|
if (!is_present(dev))
|
|
return -EIO;
|
|
if (dev->owner && 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;
|
|
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);
|
|
STK_ERROR("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 unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
|
|
{
|
|
struct stk_camera *dev;
|
|
struct video_device *vdev;
|
|
|
|
vdev = video_devdata(fp);
|
|
|
|
if (vdev == NULL)
|
|
return -EFAULT;
|
|
|
|
dev = vdev_to_camera(vdev);
|
|
if (dev == NULL)
|
|
return -ENODEV;
|
|
|
|
poll_wait(fp, &dev->wait_frame, wait);
|
|
|
|
if (!is_present(dev))
|
|
return POLLERR;
|
|
|
|
if (!list_empty(&dev->sio_full))
|
|
return (POLLIN | POLLRDNORM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
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 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;
|
|
struct video_device *vdev;
|
|
struct stk_sio_buffer *sbuf = NULL;
|
|
|
|
if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
|
|
return -EINVAL;
|
|
|
|
vdev = video_devdata(fp);
|
|
dev = vdev_to_camera(vdev);
|
|
|
|
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)
|
|
{
|
|
strcpy(cap->driver, "stk");
|
|
strcpy(cap->card, "stk");
|
|
cap->version = DRIVER_VERSION_NUM;
|
|
|
|
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
|
|
| V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
|
|
return 0;
|
|
}
|
|
|
|
static int stk_vidioc_enum_input(struct file *filp,
|
|
void *priv, struct v4l2_input *input)
|
|
{
|
|
if (input->index != 0)
|
|
return -EINVAL;
|
|
|
|
strcpy(input->name, "Syntek USB Camera");
|
|
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)
|
|
{
|
|
if (i != 0)
|
|
return -EINVAL;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* from vivi.c */
|
|
static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* List of all V4Lv2 controls supported by the driver */
|
|
static struct v4l2_queryctrl stk_controls[] = {
|
|
{
|
|
.id = V4L2_CID_BRIGHTNESS,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Brightness",
|
|
.minimum = 0,
|
|
.maximum = 0xffff,
|
|
.step = 0x0100,
|
|
.default_value = 0x6000,
|
|
},
|
|
/*TODO: get more controls to work */
|
|
};
|
|
|
|
static int stk_vidioc_queryctrl(struct file *filp,
|
|
void *priv, struct v4l2_queryctrl *c)
|
|
{
|
|
int i;
|
|
int nbr;
|
|
nbr = ARRAY_SIZE(stk_controls);
|
|
|
|
for (i = 0; i < nbr; i++) {
|
|
if (stk_controls[i].id == c->id) {
|
|
memcpy(c, &stk_controls[i],
|
|
sizeof(struct v4l2_queryctrl));
|
|
return 0;
|
|
}
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int stk_vidioc_g_ctrl(struct file *filp,
|
|
void *priv, struct v4l2_control *c)
|
|
{
|
|
struct stk_camera *dev = priv;
|
|
switch (c->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
c->value = dev->vsettings.brightness;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int stk_vidioc_s_ctrl(struct file *filp,
|
|
void *priv, struct v4l2_control *c)
|
|
{
|
|
struct stk_camera *dev = priv;
|
|
switch (c->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
dev->vsettings.brightness = c->value;
|
|
return stk_sensor_set_brightness(dev, c->value >> 8);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int stk_vidioc_enum_fmt_cap(struct file *filp,
|
|
void *priv, struct v4l2_fmtdesc *fmtd)
|
|
{
|
|
fmtd->flags = 0;
|
|
|
|
switch (fmtd->index) {
|
|
case 0:
|
|
fmtd->pixelformat = V4L2_PIX_FMT_RGB565;
|
|
strcpy(fmtd->description, "r5g6b5");
|
|
break;
|
|
case 1:
|
|
fmtd->pixelformat = V4L2_PIX_FMT_RGB565X;
|
|
strcpy(fmtd->description, "r5g6b5BE");
|
|
break;
|
|
case 2:
|
|
fmtd->pixelformat = V4L2_PIX_FMT_UYVY;
|
|
strcpy(fmtd->description, "yuv4:2:2");
|
|
break;
|
|
case 3:
|
|
fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8;
|
|
strcpy(fmtd->description, "Raw bayer");
|
|
break;
|
|
case 4:
|
|
fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
|
|
strcpy(fmtd->description, "yuv4:2:2");
|
|
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_cap(struct file *filp,
|
|
void *priv, struct v4l2_format *f)
|
|
{
|
|
struct v4l2_pix_format *pix_format = &f->fmt.pix;
|
|
struct stk_camera *dev = priv;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(stk_sizes)
|
|
&& stk_sizes[i].m != dev->vsettings.mode;
|
|
i++);
|
|
if (i == ARRAY_SIZE(stk_sizes)) {
|
|
STK_ERROR("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->priv = 0;
|
|
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_vidioc_try_fmt_cap(struct file *filp,
|
|
void *priv, struct v4l2_format *fmtd)
|
|
{
|
|
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;
|
|
fmtd->fmt.pix.priv = i - 1;
|
|
} else {
|
|
fmtd->fmt.pix.height = stk_sizes[i].h;
|
|
fmtd->fmt.pix.width = stk_sizes[i].w;
|
|
fmtd->fmt.pix.priv = 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_s_fmt_cap(struct file *filp,
|
|
void *priv, struct v4l2_format *fmtd)
|
|
{
|
|
int ret;
|
|
struct stk_camera *dev = priv;
|
|
|
|
if (dev == NULL)
|
|
return -ENODEV;
|
|
if (!is_present(dev))
|
|
return -ENODEV;
|
|
if (is_streaming(dev))
|
|
return -EBUSY;
|
|
if (dev->owner && dev->owner != filp)
|
|
return -EBUSY;
|
|
dev->owner = filp;
|
|
ret = stk_vidioc_try_fmt_cap(filp, priv, fmtd);
|
|
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[fmtd->fmt.pix.priv].m;
|
|
|
|
stk_initialise(dev);
|
|
/* 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,
|
|
(fmtd->fmt.pix.bytesperline >> 8) & 0xff);
|
|
stk_camera_write_reg(dev, 0x0114,
|
|
fmtd->fmt.pix.bytesperline & 0xff);
|
|
stk_camera_write_reg(dev, 0x0117,
|
|
(fmtd->fmt.pix.height >> 8) & 0xff);
|
|
stk_camera_write_reg(dev, 0x0116,
|
|
fmtd->fmt.pix.height & 0xff);
|
|
return stk_sensor_configure(dev);
|
|
}
|
|
|
|
static int stk_vidioc_reqbufs(struct file *filp,
|
|
void *priv, struct v4l2_requestbuffers *rb)
|
|
{
|
|
struct stk_camera *dev = priv;
|
|
|
|
if (dev == NULL)
|
|
return -ENODEV;
|
|
if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
if (rb->memory != V4L2_MEMORY_MMAP)
|
|
return -EINVAL;
|
|
if (is_streaming(dev)
|
|
|| (dev->owner && dev->owner != filp))
|
|
return -EBUSY;
|
|
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)
|
|
{
|
|
int index;
|
|
struct stk_camera *dev = priv;
|
|
struct stk_sio_buffer *sbuf;
|
|
|
|
if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
index = buf->index;
|
|
|
|
if (index < 0 || 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 = priv;
|
|
struct stk_sio_buffer *sbuf;
|
|
unsigned long flags;
|
|
if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
if (buf->memory != V4L2_MEMORY_MMAP)
|
|
return -EINVAL;
|
|
|
|
if (buf->index < 0 || 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 = priv;
|
|
struct stk_sio_buffer *sbuf;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| !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;
|
|
do_gettimeofday(&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 = priv;
|
|
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 = priv;
|
|
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)
|
|
{
|
|
if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
sp->parm.capture.capability = 0;
|
|
sp->parm.capture.capturemode = 0;
|
|
/*FIXME This is not correct */
|
|
sp->parm.capture.timeperframe.numerator = 1;
|
|
sp->parm.capture.timeperframe.denominator = 30;
|
|
sp->parm.capture.readbuffers = 2;
|
|
sp->parm.capture.extendedmode = 0;
|
|
return 0;
|
|
}
|
|
|
|
static struct 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,
|
|
.ioctl = video_ioctl2,
|
|
.llseek = no_llseek
|
|
};
|
|
|
|
static void stk_v4l_dev_release(struct video_device *vd)
|
|
{
|
|
}
|
|
|
|
static struct video_device stk_v4l_data = {
|
|
.name = "stkwebcam",
|
|
.type = VFL_TYPE_GRABBER,
|
|
.type2 = VID_TYPE_CAPTURE,
|
|
.minor = -1,
|
|
.tvnorms = V4L2_STD_UNKNOWN,
|
|
.current_norm = V4L2_STD_UNKNOWN,
|
|
.fops = &v4l_stk_fops,
|
|
.release = stk_v4l_dev_release,
|
|
|
|
.vidioc_querycap = stk_vidioc_querycap,
|
|
.vidioc_enum_fmt_cap = stk_vidioc_enum_fmt_cap,
|
|
.vidioc_try_fmt_cap = stk_vidioc_try_fmt_cap,
|
|
.vidioc_s_fmt_cap = stk_vidioc_s_fmt_cap,
|
|
.vidioc_g_fmt_cap = stk_vidioc_g_fmt_cap,
|
|
.vidioc_enum_input = stk_vidioc_enum_input,
|
|
.vidioc_s_input = stk_vidioc_s_input,
|
|
.vidioc_g_input = stk_vidioc_g_input,
|
|
.vidioc_s_std = stk_vidioc_s_std,
|
|
.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_queryctrl = stk_vidioc_queryctrl,
|
|
.vidioc_g_ctrl = stk_vidioc_g_ctrl,
|
|
.vidioc_s_ctrl = stk_vidioc_s_ctrl,
|
|
.vidioc_g_parm = stk_vidioc_g_parm,
|
|
};
|
|
|
|
|
|
static int stk_register_video_device(struct stk_camera *dev)
|
|
{
|
|
int err;
|
|
|
|
dev->vdev = stk_v4l_data;
|
|
dev->vdev.debug = debug;
|
|
dev->vdev.dev = &dev->interface->dev;
|
|
dev->vdev.priv = dev;
|
|
err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
|
|
if (err)
|
|
STK_ERROR("v4l registration failed\n");
|
|
else
|
|
STK_INFO("Syntek USB2.0 Camera is now controlling video device"
|
|
" /dev/video%d\n", dev->vdev.minor);
|
|
return err;
|
|
}
|
|
|
|
|
|
/* USB Stuff */
|
|
|
|
static int stk_camera_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
int i;
|
|
int err;
|
|
|
|
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) {
|
|
STK_ERROR("Out of memory !\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
kref_init(&dev->kref);
|
|
spin_lock_init(&dev->spinlock);
|
|
init_waitqueue_head(&dev->wait_frame);
|
|
|
|
dev->udev = udev;
|
|
dev->interface = interface;
|
|
usb_get_intf(interface);
|
|
|
|
dev->vsettings.vflip = vflip;
|
|
dev->vsettings.hflip = hflip;
|
|
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
|
|
&& ((endpoint->bEndpointAddress
|
|
& USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
|
|
&& ((endpoint->bmAttributes
|
|
& USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)) {
|
|
/* we found an isoc in endpoint */
|
|
dev->isoc_ep = (endpoint->bEndpointAddress & 0xF);
|
|
break;
|
|
}
|
|
}
|
|
if (!dev->isoc_ep) {
|
|
STK_ERROR("Could not find isoc-in endpoint");
|
|
kref_put(&dev->kref, stk_camera_cleanup);
|
|
return -ENODEV;
|
|
}
|
|
dev->vsettings.brightness = 0x7fff;
|
|
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) {
|
|
kref_put(&dev->kref, stk_camera_cleanup);
|
|
return err;
|
|
}
|
|
|
|
stk_create_sysfs_files(&dev->vdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
stk_remove_sysfs_files(&dev->vdev);
|
|
|
|
kref_put(&dev->kref, stk_camera_cleanup);
|
|
}
|
|
|
|
static struct usb_driver stk_camera_driver = {
|
|
.name = "stkwebcam",
|
|
.probe = stk_camera_probe,
|
|
.disconnect = stk_camera_disconnect,
|
|
.id_table = stkwebcam_table,
|
|
};
|
|
|
|
|
|
static int __init stk_camera_init(void)
|
|
{
|
|
int result;
|
|
|
|
result = usb_register(&stk_camera_driver);
|
|
if (result)
|
|
STK_ERROR("usb_register failed ! Error number %d\n", result);
|
|
|
|
|
|
return result;
|
|
}
|
|
|
|
static void __exit stk_camera_exit(void)
|
|
{
|
|
usb_deregister(&stk_camera_driver);
|
|
}
|
|
|
|
module_init(stk_camera_init);
|
|
module_exit(stk_camera_exit);
|
|
|
|
|