484 строки
12 KiB
C
484 строки
12 KiB
C
/*
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* Driver for USB webcams based on Konica chipset. This
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* chipset is used in Intel YC76 camera.
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*
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* Copyright (C) 2010 Hans de Goede <hdegoede@redhat.com>
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*
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* Based on the usbvideo v4l1 konicawc driver which is:
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*
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* Copyright (C) 2002 Simon Evans <spse@secret.org.uk>
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*
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* The code for making gspca work with a webcam with 2 isoc endpoints was
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* taken from the benq gspca subdriver which is:
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*
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* Copyright (C) 2009 Jean-Francois Moine (http://moinejf.free.fr)
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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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define MODULE_NAME "konica"
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#include <linux/input.h>
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#include "gspca.h"
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MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
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MODULE_DESCRIPTION("Konica chipset USB Camera Driver");
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MODULE_LICENSE("GPL");
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#define WHITEBAL_REG 0x01
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#define BRIGHTNESS_REG 0x02
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#define SHARPNESS_REG 0x03
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#define CONTRAST_REG 0x04
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#define SATURATION_REG 0x05
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/* specific webcam descriptor */
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struct sd {
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struct gspca_dev gspca_dev; /* !! must be the first item */
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struct urb *last_data_urb;
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u8 snapshot_pressed;
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};
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/* .priv is what goes to register 8 for this mode, known working values:
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0x00 -> 176x144, cropped
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0x01 -> 176x144, cropped
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0x02 -> 176x144, cropped
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0x03 -> 176x144, cropped
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0x04 -> 176x144, binned
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0x05 -> 320x240
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0x06 -> 320x240
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0x07 -> 160x120, cropped
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0x08 -> 160x120, cropped
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0x09 -> 160x120, binned (note has 136 lines)
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0x0a -> 160x120, binned (note has 136 lines)
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0x0b -> 160x120, cropped
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*/
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static const struct v4l2_pix_format vga_mode[] = {
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{160, 120, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
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.bytesperline = 160,
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.sizeimage = 160 * 136 * 3 / 2 + 960,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 0x0a},
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{176, 144, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
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.bytesperline = 176,
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.sizeimage = 176 * 144 * 3 / 2 + 960,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 0x04},
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{320, 240, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
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.bytesperline = 320,
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.sizeimage = 320 * 240 * 3 / 2 + 960,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 0x05},
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};
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static void sd_isoc_irq(struct urb *urb);
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static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index)
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{
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struct usb_device *dev = gspca_dev->dev;
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int ret;
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if (gspca_dev->usb_err < 0)
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return;
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ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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0x02,
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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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1000);
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if (ret < 0) {
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pr_err("reg_w err writing %02x to %02x: %d\n",
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value, index, ret);
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gspca_dev->usb_err = ret;
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}
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}
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static void reg_r(struct gspca_dev *gspca_dev, u16 value, u16 index)
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{
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struct usb_device *dev = gspca_dev->dev;
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int ret;
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if (gspca_dev->usb_err < 0)
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return;
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ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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0x03,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value,
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index,
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gspca_dev->usb_buf,
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2,
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1000);
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if (ret < 0) {
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pr_err("reg_r err %d\n", ret);
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gspca_dev->usb_err = ret;
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}
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}
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static void konica_stream_on(struct gspca_dev *gspca_dev)
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{
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reg_w(gspca_dev, 1, 0x0b);
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}
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static void konica_stream_off(struct gspca_dev *gspca_dev)
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{
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reg_w(gspca_dev, 0, 0x0b);
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}
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/* this function is called at probe time */
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static int sd_config(struct gspca_dev *gspca_dev,
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const struct usb_device_id *id)
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{
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gspca_dev->cam.cam_mode = vga_mode;
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gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
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gspca_dev->cam.no_urb_create = 1;
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return 0;
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}
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/* this function is called at probe and resume time */
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static int sd_init(struct gspca_dev *gspca_dev)
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{
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int i;
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/*
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* The konica needs a freaking large time to "boot" (approx 6.5 sec.),
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* and does not want to be bothered while doing so :|
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* Register 0x10 counts from 1 - 3, with 3 being "ready"
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*/
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msleep(6000);
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for (i = 0; i < 20; i++) {
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reg_r(gspca_dev, 0, 0x10);
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if (gspca_dev->usb_buf[0] == 3)
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break;
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msleep(100);
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}
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reg_w(gspca_dev, 0, 0x0d);
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return gspca_dev->usb_err;
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}
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static int sd_start(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct urb *urb;
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int i, n, packet_size;
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struct usb_host_interface *alt;
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struct usb_interface *intf;
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intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
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alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
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if (!alt) {
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pr_err("Couldn't get altsetting\n");
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return -EIO;
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}
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packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
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n = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
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reg_w(gspca_dev, n, 0x08);
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konica_stream_on(gspca_dev);
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if (gspca_dev->usb_err)
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return gspca_dev->usb_err;
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/* create 4 URBs - 2 on endpoint 0x83 and 2 on 0x082 */
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#if MAX_NURBS < 4
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#error "Not enough URBs in the gspca table"
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#endif
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#define SD_NPKT 32
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for (n = 0; n < 4; n++) {
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i = n & 1 ? 0 : 1;
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packet_size =
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le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize);
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urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
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if (!urb) {
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pr_err("usb_alloc_urb failed\n");
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return -ENOMEM;
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}
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gspca_dev->urb[n] = urb;
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urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
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packet_size * SD_NPKT,
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GFP_KERNEL,
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&urb->transfer_dma);
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if (urb->transfer_buffer == NULL) {
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pr_err("usb_buffer_alloc failed\n");
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return -ENOMEM;
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}
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urb->dev = gspca_dev->dev;
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urb->context = gspca_dev;
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urb->transfer_buffer_length = packet_size * SD_NPKT;
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urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
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n & 1 ? 0x81 : 0x82);
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urb->transfer_flags = URB_ISO_ASAP
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| URB_NO_TRANSFER_DMA_MAP;
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urb->interval = 1;
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urb->complete = sd_isoc_irq;
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urb->number_of_packets = SD_NPKT;
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for (i = 0; i < SD_NPKT; i++) {
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urb->iso_frame_desc[i].length = packet_size;
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urb->iso_frame_desc[i].offset = packet_size * i;
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}
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}
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return 0;
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}
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static void sd_stopN(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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konica_stream_off(gspca_dev);
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#if IS_ENABLED(CONFIG_INPUT)
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/* Don't keep the button in the pressed state "forever" if it was
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pressed when streaming is stopped */
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if (sd->snapshot_pressed) {
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input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
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input_sync(gspca_dev->input_dev);
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sd->snapshot_pressed = 0;
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}
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#endif
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}
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/* reception of an URB */
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static void sd_isoc_irq(struct urb *urb)
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{
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struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
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struct sd *sd = (struct sd *) gspca_dev;
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struct urb *data_urb, *status_urb;
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u8 *data;
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int i, st;
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PDEBUG(D_PACK, "sd isoc irq");
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if (!gspca_dev->streaming)
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return;
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if (urb->status != 0) {
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if (urb->status == -ESHUTDOWN)
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return; /* disconnection */
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#ifdef CONFIG_PM
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if (gspca_dev->frozen)
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return;
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#endif
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PERR("urb status: %d", urb->status);
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st = usb_submit_urb(urb, GFP_ATOMIC);
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if (st < 0)
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pr_err("resubmit urb error %d\n", st);
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return;
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}
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/* if this is a data URB (ep 0x82), wait */
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if (urb->transfer_buffer_length > 32) {
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sd->last_data_urb = urb;
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return;
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}
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status_urb = urb;
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data_urb = sd->last_data_urb;
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sd->last_data_urb = NULL;
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if (!data_urb || data_urb->start_frame != status_urb->start_frame) {
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PERR("lost sync on frames");
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goto resubmit;
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}
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if (data_urb->number_of_packets != status_urb->number_of_packets) {
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PERR("no packets does not match, data: %d, status: %d",
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data_urb->number_of_packets,
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status_urb->number_of_packets);
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goto resubmit;
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}
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for (i = 0; i < status_urb->number_of_packets; i++) {
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if (data_urb->iso_frame_desc[i].status ||
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status_urb->iso_frame_desc[i].status) {
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PERR("pkt %d data-status %d, status-status %d", i,
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data_urb->iso_frame_desc[i].status,
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status_urb->iso_frame_desc[i].status);
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gspca_dev->last_packet_type = DISCARD_PACKET;
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continue;
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}
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if (status_urb->iso_frame_desc[i].actual_length != 1) {
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PERR("bad status packet length %d",
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status_urb->iso_frame_desc[i].actual_length);
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gspca_dev->last_packet_type = DISCARD_PACKET;
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continue;
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}
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st = *((u8 *)status_urb->transfer_buffer
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+ status_urb->iso_frame_desc[i].offset);
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data = (u8 *)data_urb->transfer_buffer
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+ data_urb->iso_frame_desc[i].offset;
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/* st: 0x80-0xff: frame start with frame number (ie 0-7f)
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* otherwise:
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* bit 0 0: keep packet
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* 1: drop packet (padding data)
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*
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* bit 4 0 button not clicked
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* 1 button clicked
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* button is used to `take a picture' (in software)
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*/
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if (st & 0x80) {
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gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
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gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
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} else {
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#if IS_ENABLED(CONFIG_INPUT)
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u8 button_state = st & 0x40 ? 1 : 0;
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if (sd->snapshot_pressed != button_state) {
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input_report_key(gspca_dev->input_dev,
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KEY_CAMERA,
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button_state);
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input_sync(gspca_dev->input_dev);
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sd->snapshot_pressed = button_state;
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}
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#endif
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if (st & 0x01)
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continue;
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}
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gspca_frame_add(gspca_dev, INTER_PACKET, data,
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data_urb->iso_frame_desc[i].actual_length);
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}
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resubmit:
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if (data_urb) {
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st = usb_submit_urb(data_urb, GFP_ATOMIC);
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if (st < 0)
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PERR("usb_submit_urb(data_urb) ret %d", st);
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}
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st = usb_submit_urb(status_urb, GFP_ATOMIC);
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if (st < 0)
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PERR("usb_submit_urb(status_urb) ret %d\n", st);
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}
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static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct gspca_dev *gspca_dev =
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container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
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gspca_dev->usb_err = 0;
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if (!gspca_dev->streaming)
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return 0;
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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konica_stream_off(gspca_dev);
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reg_w(gspca_dev, ctrl->val, BRIGHTNESS_REG);
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konica_stream_on(gspca_dev);
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break;
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case V4L2_CID_CONTRAST:
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konica_stream_off(gspca_dev);
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reg_w(gspca_dev, ctrl->val, CONTRAST_REG);
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konica_stream_on(gspca_dev);
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break;
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case V4L2_CID_SATURATION:
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konica_stream_off(gspca_dev);
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reg_w(gspca_dev, ctrl->val, SATURATION_REG);
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konica_stream_on(gspca_dev);
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break;
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case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
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konica_stream_off(gspca_dev);
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reg_w(gspca_dev, ctrl->val, WHITEBAL_REG);
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konica_stream_on(gspca_dev);
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break;
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case V4L2_CID_SHARPNESS:
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konica_stream_off(gspca_dev);
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reg_w(gspca_dev, ctrl->val, SHARPNESS_REG);
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konica_stream_on(gspca_dev);
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break;
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}
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return gspca_dev->usb_err;
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}
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static const struct v4l2_ctrl_ops sd_ctrl_ops = {
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.s_ctrl = sd_s_ctrl,
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};
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static int sd_init_controls(struct gspca_dev *gspca_dev)
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{
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struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
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gspca_dev->vdev.ctrl_handler = hdl;
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v4l2_ctrl_handler_init(hdl, 5);
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v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_BRIGHTNESS, 0, 9, 1, 4);
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/* Needs to be verified */
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v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_CONTRAST, 0, 9, 1, 4);
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v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_SATURATION, 0, 9, 1, 4);
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v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_WHITE_BALANCE_TEMPERATURE,
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0, 33, 1, 25);
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v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_SHARPNESS, 0, 9, 1, 4);
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if (hdl->error) {
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pr_err("Could not initialize controls\n");
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return hdl->error;
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}
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return 0;
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}
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/* sub-driver description */
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static const struct sd_desc sd_desc = {
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.name = MODULE_NAME,
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.config = sd_config,
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.init = sd_init,
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.init_controls = sd_init_controls,
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.start = sd_start,
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.stopN = sd_stopN,
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#if IS_ENABLED(CONFIG_INPUT)
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.other_input = 1,
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#endif
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};
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/* -- module initialisation -- */
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static const struct usb_device_id device_table[] = {
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{USB_DEVICE(0x04c8, 0x0720)}, /* Intel YC 76 */
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{}
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};
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MODULE_DEVICE_TABLE(usb, device_table);
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/* -- device connect -- */
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static int sd_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
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THIS_MODULE);
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}
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static struct usb_driver sd_driver = {
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.name = MODULE_NAME,
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.id_table = device_table,
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.probe = sd_probe,
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.disconnect = gspca_disconnect,
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#ifdef CONFIG_PM
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.suspend = gspca_suspend,
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.resume = gspca_resume,
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.reset_resume = gspca_resume,
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#endif
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};
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module_usb_driver(sd_driver);
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