![Sakari Ailus](/assets/img/avatar_default.png)
Drop the FSF's postal address from the source code files that typically contain mostly the license text. Of the 628 removed instances, 578 are outdated. The patch has been created with the following command without manual edits: git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \ drivers/media/ include/media|while read i; do i=$i perl -e ' open(F,"< $ENV{i}"); $a=join("", <F>); $a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m && $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m; close(F); open(F, "> $ENV{i}"); print F $a; close(F);'; done Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
736 lines
19 KiB
C
736 lines
19 KiB
C
/*
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* GSPCA Endpoints (formerly known as AOX) se401 USB Camera sub Driver
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*
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* Copyright (C) 2011 Hans de Goede <hdegoede@redhat.com>
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*
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* Based on the v4l1 se401 driver which is:
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*
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* Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org)
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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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* (at your option) 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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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define MODULE_NAME "se401"
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#define BULK_SIZE 4096
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#define PACKET_SIZE 1024
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#define READ_REQ_SIZE 64
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#define MAX_MODES ((READ_REQ_SIZE - 6) / 4)
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/* The se401 compression algorithm uses a fixed quant factor, which
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can be configured by setting the high nibble of the SE401_OPERATINGMODE
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feature. This needs to exactly match what is in libv4l! */
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#define SE401_QUANT_FACT 8
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#include <linux/input.h>
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#include <linux/slab.h>
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#include "gspca.h"
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#include "se401.h"
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MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
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MODULE_DESCRIPTION("Endpoints se401");
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MODULE_LICENSE("GPL");
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/* exposure change state machine states */
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enum {
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EXPO_CHANGED,
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EXPO_DROP_FRAME,
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EXPO_NO_CHANGE,
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};
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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 { /* exposure/freq control cluster */
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struct v4l2_ctrl *exposure;
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struct v4l2_ctrl *freq;
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};
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bool has_brightness;
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struct v4l2_pix_format fmts[MAX_MODES];
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int pixels_read;
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int packet_read;
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u8 packet[PACKET_SIZE];
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u8 restart_stream;
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u8 button_state;
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u8 resetlevel;
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u8 resetlevel_frame_count;
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int resetlevel_adjust_dir;
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int expo_change_state;
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};
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static void se401_write_req(struct gspca_dev *gspca_dev, u16 req, u16 value,
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int silent)
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{
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int err;
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if (gspca_dev->usb_err < 0)
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return;
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err = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0), req,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, 0, NULL, 0, 1000);
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if (err < 0) {
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if (!silent)
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pr_err("write req failed req %#04x val %#04x error %d\n",
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req, value, err);
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gspca_dev->usb_err = err;
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}
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}
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static void se401_read_req(struct gspca_dev *gspca_dev, u16 req, int silent)
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{
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int err;
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if (gspca_dev->usb_err < 0)
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return;
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if (USB_BUF_SZ < READ_REQ_SIZE) {
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pr_err("USB_BUF_SZ too small!!\n");
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gspca_dev->usb_err = -ENOBUFS;
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return;
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}
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err = usb_control_msg(gspca_dev->dev,
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usb_rcvctrlpipe(gspca_dev->dev, 0), req,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, 0, gspca_dev->usb_buf, READ_REQ_SIZE, 1000);
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if (err < 0) {
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if (!silent)
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pr_err("read req failed req %#04x error %d\n",
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req, err);
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gspca_dev->usb_err = err;
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}
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}
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static void se401_set_feature(struct gspca_dev *gspca_dev,
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u16 selector, u16 param)
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{
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int err;
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if (gspca_dev->usb_err < 0)
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return;
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err = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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SE401_REQ_SET_EXT_FEATURE,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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param, selector, NULL, 0, 1000);
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if (err < 0) {
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pr_err("set feature failed sel %#04x param %#04x error %d\n",
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selector, param, err);
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gspca_dev->usb_err = err;
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}
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}
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static int se401_get_feature(struct gspca_dev *gspca_dev, u16 selector)
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{
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int err;
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if (gspca_dev->usb_err < 0)
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return gspca_dev->usb_err;
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if (USB_BUF_SZ < 2) {
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pr_err("USB_BUF_SZ too small!!\n");
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gspca_dev->usb_err = -ENOBUFS;
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return gspca_dev->usb_err;
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}
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err = usb_control_msg(gspca_dev->dev,
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usb_rcvctrlpipe(gspca_dev->dev, 0),
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SE401_REQ_GET_EXT_FEATURE,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, selector, gspca_dev->usb_buf, 2, 1000);
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if (err < 0) {
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pr_err("get feature failed sel %#04x error %d\n",
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selector, err);
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gspca_dev->usb_err = err;
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return err;
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}
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return gspca_dev->usb_buf[0] | (gspca_dev->usb_buf[1] << 8);
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}
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static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
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{
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/* HDG: this does not seem to do anything on my cam */
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se401_write_req(gspca_dev, SE401_REQ_SET_BRT, val, 0);
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}
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static void setgain(struct gspca_dev *gspca_dev, s32 val)
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{
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u16 gain = 63 - val;
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/* red color gain */
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se401_set_feature(gspca_dev, HV7131_REG_ARCG, gain);
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/* green color gain */
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se401_set_feature(gspca_dev, HV7131_REG_AGCG, gain);
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/* blue color gain */
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se401_set_feature(gspca_dev, HV7131_REG_ABCG, gain);
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}
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static void setexposure(struct gspca_dev *gspca_dev, s32 val, s32 freq)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int integration = val << 6;
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u8 expose_h, expose_m, expose_l;
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/* Do this before the set_feature calls, for proper timing wrt
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the interrupt driven pkt_scan. Note we may still race but that
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is not a big issue, the expo change state machine is merely for
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avoiding underexposed frames getting send out, if one sneaks
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through so be it */
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sd->expo_change_state = EXPO_CHANGED;
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if (freq == V4L2_CID_POWER_LINE_FREQUENCY_50HZ)
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integration = integration - integration % 106667;
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if (freq == V4L2_CID_POWER_LINE_FREQUENCY_60HZ)
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integration = integration - integration % 88889;
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expose_h = (integration >> 16);
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expose_m = (integration >> 8);
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expose_l = integration;
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/* integration time low */
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se401_set_feature(gspca_dev, HV7131_REG_TITL, expose_l);
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/* integration time mid */
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se401_set_feature(gspca_dev, HV7131_REG_TITM, expose_m);
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/* integration time high */
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se401_set_feature(gspca_dev, HV7131_REG_TITU, expose_h);
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}
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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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struct sd *sd = (struct sd *)gspca_dev;
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struct cam *cam = &gspca_dev->cam;
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u8 *cd = gspca_dev->usb_buf;
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int i, j, n;
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int widths[MAX_MODES], heights[MAX_MODES];
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/* Read the camera descriptor */
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se401_read_req(gspca_dev, SE401_REQ_GET_CAMERA_DESCRIPTOR, 1);
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if (gspca_dev->usb_err) {
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/* Sometimes after being idle for a while the se401 won't
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respond and needs a good kicking */
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usb_reset_device(gspca_dev->dev);
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gspca_dev->usb_err = 0;
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se401_read_req(gspca_dev, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0);
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}
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/* Some cameras start with their LED on */
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se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 0, 0);
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if (gspca_dev->usb_err)
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return gspca_dev->usb_err;
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if (cd[1] != 0x41) {
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pr_err("Wrong descriptor type\n");
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return -ENODEV;
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}
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if (!(cd[2] & SE401_FORMAT_BAYER)) {
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pr_err("Bayer format not supported!\n");
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return -ENODEV;
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}
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if (cd[3])
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pr_info("ExtraFeatures: %d\n", cd[3]);
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n = cd[4] | (cd[5] << 8);
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if (n > MAX_MODES) {
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pr_err("Too many frame sizes\n");
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return -ENODEV;
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}
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for (i = 0; i < n ; i++) {
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widths[i] = cd[6 + i * 4 + 0] | (cd[6 + i * 4 + 1] << 8);
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heights[i] = cd[6 + i * 4 + 2] | (cd[6 + i * 4 + 3] << 8);
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}
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for (i = 0; i < n ; i++) {
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sd->fmts[i].width = widths[i];
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sd->fmts[i].height = heights[i];
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sd->fmts[i].field = V4L2_FIELD_NONE;
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sd->fmts[i].colorspace = V4L2_COLORSPACE_SRGB;
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sd->fmts[i].priv = 1;
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/* janggu compression only works for 1/4th or 1/16th res */
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for (j = 0; j < n; j++) {
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if (widths[j] / 2 == widths[i] &&
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heights[j] / 2 == heights[i]) {
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sd->fmts[i].priv = 2;
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break;
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}
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}
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/* 1/16th if available too is better then 1/4th, because
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we then use a larger area of the sensor */
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for (j = 0; j < n; j++) {
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if (widths[j] / 4 == widths[i] &&
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heights[j] / 4 == heights[i]) {
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sd->fmts[i].priv = 4;
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break;
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}
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}
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if (sd->fmts[i].priv == 1) {
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/* Not a 1/4th or 1/16th res, use bayer */
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sd->fmts[i].pixelformat = V4L2_PIX_FMT_SBGGR8;
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sd->fmts[i].bytesperline = widths[i];
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sd->fmts[i].sizeimage = widths[i] * heights[i];
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pr_info("Frame size: %dx%d bayer\n",
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widths[i], heights[i]);
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} else {
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/* Found a match use janggu compression */
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sd->fmts[i].pixelformat = V4L2_PIX_FMT_SE401;
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sd->fmts[i].bytesperline = 0;
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sd->fmts[i].sizeimage = widths[i] * heights[i] * 3;
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pr_info("Frame size: %dx%d 1/%dth janggu\n",
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widths[i], heights[i],
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sd->fmts[i].priv * sd->fmts[i].priv);
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}
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}
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cam->cam_mode = sd->fmts;
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cam->nmodes = n;
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cam->bulk = 1;
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cam->bulk_size = BULK_SIZE;
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cam->bulk_nurbs = 4;
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sd->resetlevel = 0x2d; /* Set initial resetlevel */
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/* See if the camera supports brightness */
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se401_read_req(gspca_dev, SE401_REQ_GET_BRT, 1);
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sd->has_brightness = !!gspca_dev->usb_err;
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gspca_dev->usb_err = 0;
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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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return 0;
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}
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/* function called at start time before URB creation */
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static int sd_isoc_init(struct gspca_dev *gspca_dev)
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{
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gspca_dev->alt = 1; /* Ignore the bogus isoc alt settings */
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return gspca_dev->usb_err;
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}
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/* -- start the camera -- */
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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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int mult = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
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int mode = 0;
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se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 1, 1);
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if (gspca_dev->usb_err) {
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/* Sometimes after being idle for a while the se401 won't
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respond and needs a good kicking */
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usb_reset_device(gspca_dev->dev);
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gspca_dev->usb_err = 0;
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se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 1, 0);
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}
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se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 1, 0);
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se401_set_feature(gspca_dev, HV7131_REG_MODE_B, 0x05);
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/* set size + mode */
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se401_write_req(gspca_dev, SE401_REQ_SET_WIDTH,
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gspca_dev->pixfmt.width * mult, 0);
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se401_write_req(gspca_dev, SE401_REQ_SET_HEIGHT,
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gspca_dev->pixfmt.height * mult, 0);
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/*
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* HDG: disabled this as it does not seem to do anything
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* se401_write_req(gspca_dev, SE401_REQ_SET_OUTPUT_MODE,
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* SE401_FORMAT_BAYER, 0);
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*/
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switch (mult) {
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case 1: /* Raw bayer */
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mode = 0x03; break;
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case 2: /* 1/4th janggu */
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mode = SE401_QUANT_FACT << 4; break;
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case 4: /* 1/16th janggu */
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mode = (SE401_QUANT_FACT << 4) | 0x02; break;
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}
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se401_set_feature(gspca_dev, SE401_OPERATINGMODE, mode);
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se401_set_feature(gspca_dev, HV7131_REG_ARLV, sd->resetlevel);
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sd->packet_read = 0;
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sd->pixels_read = 0;
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sd->restart_stream = 0;
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sd->resetlevel_frame_count = 0;
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sd->resetlevel_adjust_dir = 0;
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sd->expo_change_state = EXPO_NO_CHANGE;
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se401_write_req(gspca_dev, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, 0);
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return gspca_dev->usb_err;
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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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se401_write_req(gspca_dev, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, 0);
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se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 0, 0);
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se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 0, 0);
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}
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static void sd_dq_callback(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *)gspca_dev;
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unsigned int ahrc, alrc;
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int oldreset, adjust_dir;
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/* Restart the stream if requested do so by pkt_scan */
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if (sd->restart_stream) {
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sd_stopN(gspca_dev);
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sd_start(gspca_dev);
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sd->restart_stream = 0;
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}
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/* Automatically adjust sensor reset level
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Hyundai have some really nice docs about this and other sensor
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related stuff on their homepage: www.hei.co.kr */
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sd->resetlevel_frame_count++;
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if (sd->resetlevel_frame_count < 20)
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return;
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/* For some reason this normally read-only register doesn't get reset
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to zero after reading them just once... */
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se401_get_feature(gspca_dev, HV7131_REG_HIREFNOH);
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se401_get_feature(gspca_dev, HV7131_REG_HIREFNOL);
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se401_get_feature(gspca_dev, HV7131_REG_LOREFNOH);
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se401_get_feature(gspca_dev, HV7131_REG_LOREFNOL);
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ahrc = 256*se401_get_feature(gspca_dev, HV7131_REG_HIREFNOH) +
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se401_get_feature(gspca_dev, HV7131_REG_HIREFNOL);
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alrc = 256*se401_get_feature(gspca_dev, HV7131_REG_LOREFNOH) +
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se401_get_feature(gspca_dev, HV7131_REG_LOREFNOL);
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/* Not an exact science, but it seems to work pretty well... */
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oldreset = sd->resetlevel;
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if (alrc > 10) {
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while (alrc >= 10 && sd->resetlevel < 63) {
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sd->resetlevel++;
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alrc /= 2;
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}
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} else if (ahrc > 20) {
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while (ahrc >= 20 && sd->resetlevel > 0) {
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sd->resetlevel--;
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ahrc /= 2;
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}
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}
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/* Detect ping-pong-ing and halve adjustment to avoid overshoot */
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if (sd->resetlevel > oldreset)
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adjust_dir = 1;
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else
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adjust_dir = -1;
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if (sd->resetlevel_adjust_dir &&
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sd->resetlevel_adjust_dir != adjust_dir)
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sd->resetlevel = oldreset + (sd->resetlevel - oldreset) / 2;
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if (sd->resetlevel != oldreset) {
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sd->resetlevel_adjust_dir = adjust_dir;
|
|
se401_set_feature(gspca_dev, HV7131_REG_ARLV, sd->resetlevel);
|
|
}
|
|
|
|
sd->resetlevel_frame_count = 0;
|
|
}
|
|
|
|
static void sd_complete_frame(struct gspca_dev *gspca_dev, u8 *data, int len)
|
|
{
|
|
struct sd *sd = (struct sd *)gspca_dev;
|
|
|
|
switch (sd->expo_change_state) {
|
|
case EXPO_CHANGED:
|
|
/* The exposure was changed while this frame
|
|
was being send, so this frame is ok */
|
|
sd->expo_change_state = EXPO_DROP_FRAME;
|
|
break;
|
|
case EXPO_DROP_FRAME:
|
|
/* The exposure was changed while this frame
|
|
was being captured, drop it! */
|
|
gspca_dev->last_packet_type = DISCARD_PACKET;
|
|
sd->expo_change_state = EXPO_NO_CHANGE;
|
|
break;
|
|
case EXPO_NO_CHANGE:
|
|
break;
|
|
}
|
|
gspca_frame_add(gspca_dev, LAST_PACKET, data, len);
|
|
}
|
|
|
|
static void sd_pkt_scan_janggu(struct gspca_dev *gspca_dev, u8 *data, int len)
|
|
{
|
|
struct sd *sd = (struct sd *)gspca_dev;
|
|
int imagesize = gspca_dev->pixfmt.width * gspca_dev->pixfmt.height;
|
|
int i, plen, bits, pixels, info, count;
|
|
|
|
if (sd->restart_stream)
|
|
return;
|
|
|
|
/* Sometimes a 1024 bytes garbage bulk packet is send between frames */
|
|
if (gspca_dev->last_packet_type == LAST_PACKET && len == 1024) {
|
|
gspca_dev->last_packet_type = DISCARD_PACKET;
|
|
return;
|
|
}
|
|
|
|
i = 0;
|
|
while (i < len) {
|
|
/* Read header if not already be present from prev bulk pkt */
|
|
if (sd->packet_read < 4) {
|
|
count = 4 - sd->packet_read;
|
|
if (count > len - i)
|
|
count = len - i;
|
|
memcpy(&sd->packet[sd->packet_read], &data[i], count);
|
|
sd->packet_read += count;
|
|
i += count;
|
|
if (sd->packet_read < 4)
|
|
break;
|
|
}
|
|
bits = sd->packet[3] + (sd->packet[2] << 8);
|
|
pixels = sd->packet[1] + ((sd->packet[0] & 0x3f) << 8);
|
|
info = (sd->packet[0] & 0xc0) >> 6;
|
|
plen = ((bits + 47) >> 4) << 1;
|
|
/* Sanity checks */
|
|
if (plen > 1024) {
|
|
pr_err("invalid packet len %d restarting stream\n",
|
|
plen);
|
|
goto error;
|
|
}
|
|
if (info == 3) {
|
|
pr_err("unknown frame info value restarting stream\n");
|
|
goto error;
|
|
}
|
|
|
|
/* Read (remainder of) packet contents */
|
|
count = plen - sd->packet_read;
|
|
if (count > len - i)
|
|
count = len - i;
|
|
memcpy(&sd->packet[sd->packet_read], &data[i], count);
|
|
sd->packet_read += count;
|
|
i += count;
|
|
if (sd->packet_read < plen)
|
|
break;
|
|
|
|
sd->pixels_read += pixels;
|
|
sd->packet_read = 0;
|
|
|
|
switch (info) {
|
|
case 0: /* Frame data */
|
|
gspca_frame_add(gspca_dev, INTER_PACKET, sd->packet,
|
|
plen);
|
|
break;
|
|
case 1: /* EOF */
|
|
if (sd->pixels_read != imagesize) {
|
|
pr_err("frame size %d expected %d\n",
|
|
sd->pixels_read, imagesize);
|
|
goto error;
|
|
}
|
|
sd_complete_frame(gspca_dev, sd->packet, plen);
|
|
return; /* Discard the rest of the bulk packet !! */
|
|
case 2: /* SOF */
|
|
gspca_frame_add(gspca_dev, FIRST_PACKET, sd->packet,
|
|
plen);
|
|
sd->pixels_read = pixels;
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
|
|
error:
|
|
sd->restart_stream = 1;
|
|
/* Give userspace a 0 bytes frame, so our dq callback gets
|
|
called and it can restart the stream */
|
|
gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
|
|
gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
|
|
}
|
|
|
|
static void sd_pkt_scan_bayer(struct gspca_dev *gspca_dev, u8 *data, int len)
|
|
{
|
|
struct cam *cam = &gspca_dev->cam;
|
|
int imagesize = cam->cam_mode[gspca_dev->curr_mode].sizeimage;
|
|
|
|
if (gspca_dev->image_len == 0) {
|
|
gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
|
|
return;
|
|
}
|
|
|
|
if (gspca_dev->image_len + len >= imagesize) {
|
|
sd_complete_frame(gspca_dev, data, len);
|
|
return;
|
|
}
|
|
|
|
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
|
|
}
|
|
|
|
static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len)
|
|
{
|
|
int mult = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
|
|
|
|
if (len == 0)
|
|
return;
|
|
|
|
if (mult == 1) /* mult == 1 means raw bayer */
|
|
sd_pkt_scan_bayer(gspca_dev, data, len);
|
|
else
|
|
sd_pkt_scan_janggu(gspca_dev, data, len);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_INPUT)
|
|
static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len)
|
|
{
|
|
struct sd *sd = (struct sd *)gspca_dev;
|
|
u8 state;
|
|
|
|
if (len != 2)
|
|
return -EINVAL;
|
|
|
|
switch (data[0]) {
|
|
case 0:
|
|
case 1:
|
|
state = data[0];
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
if (sd->button_state != state) {
|
|
input_report_key(gspca_dev->input_dev, KEY_CAMERA, state);
|
|
input_sync(gspca_dev->input_dev);
|
|
sd->button_state = state;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct gspca_dev *gspca_dev =
|
|
container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
|
|
struct sd *sd = (struct sd *)gspca_dev;
|
|
|
|
gspca_dev->usb_err = 0;
|
|
|
|
if (!gspca_dev->streaming)
|
|
return 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
setbrightness(gspca_dev, ctrl->val);
|
|
break;
|
|
case V4L2_CID_GAIN:
|
|
setgain(gspca_dev, ctrl->val);
|
|
break;
|
|
case V4L2_CID_EXPOSURE:
|
|
setexposure(gspca_dev, ctrl->val, sd->freq->val);
|
|
break;
|
|
}
|
|
return gspca_dev->usb_err;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops sd_ctrl_ops = {
|
|
.s_ctrl = sd_s_ctrl,
|
|
};
|
|
|
|
static int sd_init_controls(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *)gspca_dev;
|
|
struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
|
|
|
|
gspca_dev->vdev.ctrl_handler = hdl;
|
|
v4l2_ctrl_handler_init(hdl, 4);
|
|
if (sd->has_brightness)
|
|
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
|
|
V4L2_CID_BRIGHTNESS, 0, 255, 1, 15);
|
|
/* max is really 63 but > 50 is not pretty */
|
|
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
|
|
V4L2_CID_GAIN, 0, 50, 1, 25);
|
|
sd->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
|
|
V4L2_CID_EXPOSURE, 0, 32767, 1, 15000);
|
|
sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
|
|
V4L2_CID_POWER_LINE_FREQUENCY,
|
|
V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 0);
|
|
|
|
if (hdl->error) {
|
|
pr_err("Could not initialize controls\n");
|
|
return hdl->error;
|
|
}
|
|
v4l2_ctrl_cluster(2, &sd->exposure);
|
|
return 0;
|
|
}
|
|
|
|
/* sub-driver description */
|
|
static const struct sd_desc sd_desc = {
|
|
.name = MODULE_NAME,
|
|
.config = sd_config,
|
|
.init = sd_init,
|
|
.init_controls = sd_init_controls,
|
|
.isoc_init = sd_isoc_init,
|
|
.start = sd_start,
|
|
.stopN = sd_stopN,
|
|
.dq_callback = sd_dq_callback,
|
|
.pkt_scan = sd_pkt_scan,
|
|
#if IS_ENABLED(CONFIG_INPUT)
|
|
.int_pkt_scan = sd_int_pkt_scan,
|
|
#endif
|
|
};
|
|
|
|
/* -- module initialisation -- */
|
|
static const struct usb_device_id device_table[] = {
|
|
{USB_DEVICE(0x03e8, 0x0004)}, /* Endpoints/Aox SE401 */
|
|
{USB_DEVICE(0x0471, 0x030b)}, /* Philips PCVC665K */
|
|
{USB_DEVICE(0x047d, 0x5001)}, /* Kensington 67014 */
|
|
{USB_DEVICE(0x047d, 0x5002)}, /* Kensington 6701(5/7) */
|
|
{USB_DEVICE(0x047d, 0x5003)}, /* Kensington 67016 */
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, device_table);
|
|
|
|
/* -- device connect -- */
|
|
static int sd_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
|
|
THIS_MODULE);
|
|
}
|
|
|
|
static int sd_pre_reset(struct usb_interface *intf)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int sd_post_reset(struct usb_interface *intf)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static struct usb_driver sd_driver = {
|
|
.name = MODULE_NAME,
|
|
.id_table = device_table,
|
|
.probe = sd_probe,
|
|
.disconnect = gspca_disconnect,
|
|
#ifdef CONFIG_PM
|
|
.suspend = gspca_suspend,
|
|
.resume = gspca_resume,
|
|
.reset_resume = gspca_resume,
|
|
#endif
|
|
.pre_reset = sd_pre_reset,
|
|
.post_reset = sd_post_reset,
|
|
};
|
|
|
|
module_usb_driver(sd_driver);
|