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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 50 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154042.917228456@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
688 lines
19 KiB
C
688 lines
19 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Pixart PAC7311 library
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* Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
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*
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* V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
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*/
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/* Some documentation about various registers as determined by trial and error.
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*
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* Register page 1:
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*
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* Address Description
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* 0x08 Unknown compressor related, must always be 8 except when not
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* in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !
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* 0x1b Auto white balance related, bit 0 is AWB enable (inverted)
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* bits 345 seem to toggle per color gains on/off (inverted)
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* 0x78 Global control, bit 6 controls the LED (inverted)
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* 0x80 Compression balance, interesting settings:
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* 0x01 Use this to allow the camera to switch to higher compr.
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* on the fly. Needed to stay within bandwidth @ 640x480@30
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* 0x1c From usb captures under Windows for 640x480
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* 0x2a Values >= this switch the camera to a lower compression,
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* using the same table for both luminance and chrominance.
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* This gives a sharper picture. Usable only at 640x480@ <
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* 15 fps or 320x240 / 160x120. Note currently the driver
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* does not use this as the quality gain is small and the
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* generated JPG-s are only understood by v4l-utils >= 0.8.9
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* 0x3f From usb captures under Windows for 320x240
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* 0x69 From usb captures under Windows for 160x120
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*
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* Register page 4:
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*
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* Address Description
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* 0x02 Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on
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* the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
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* 0x0f Master gain 1-245, low value = high gain
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* 0x10 Another gain 0-15, limited influence (1-2x gain I guess)
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* 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
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* Note setting vflip disabled leads to a much lower image quality,
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* so we always vflip, and tell userspace to flip it back
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* 0x27 Seems to toggle various gains on / off, Setting bit 7 seems to
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* completely disable the analog amplification block. Set to 0x68
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* for max gain, 0x14 for minimal gain.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define MODULE_NAME "pac7311"
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#include <linux/input.h>
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#include "gspca.h"
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/* Include pac common sof detection functions */
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#include "pac_common.h"
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#define PAC7311_GAIN_DEFAULT 122
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#define PAC7311_EXPOSURE_DEFAULT 3 /* 20 fps, avoid using high compr. */
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MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
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MODULE_DESCRIPTION("Pixart PAC7311");
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MODULE_LICENSE("GPL");
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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 v4l2_ctrl *contrast;
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struct v4l2_ctrl *hflip;
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u8 sof_read;
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u8 autogain_ignore_frames;
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atomic_t avg_lum;
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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_PJPG, V4L2_FIELD_NONE,
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.bytesperline = 160,
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.sizeimage = 160 * 120 * 3 / 8 + 590,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.priv = 2},
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{320, 240, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
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.bytesperline = 320,
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.sizeimage = 320 * 240 * 3 / 8 + 590,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.priv = 1},
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{640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
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.bytesperline = 640,
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.sizeimage = 640 * 480 * 3 / 8 + 590,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.priv = 0},
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};
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#define LOAD_PAGE4 254
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#define END_OF_SEQUENCE 0
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static const __u8 init_7311[] = {
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0xff, 0x01,
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0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */
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0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */
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0x78, 0x44, /* Bit_0=start stream, Bit_6=LED */
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0xff, 0x04,
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0x27, 0x80,
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0x28, 0xca,
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0x29, 0x53,
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0x2a, 0x0e,
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0xff, 0x01,
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0x3e, 0x20,
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};
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static const __u8 start_7311[] = {
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/* index, len, [value]* */
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0xff, 1, 0x01, /* page 1 */
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0x02, 43, 0x48, 0x0a, 0x40, 0x08, 0x00, 0x00, 0x08, 0x00,
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0x06, 0xff, 0x11, 0xff, 0x5a, 0x30, 0x90, 0x4c,
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0x00, 0x07, 0x00, 0x0a, 0x10, 0x00, 0xa0, 0x10,
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0x02, 0x00, 0x00, 0x00, 0x00, 0x0b, 0x01, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00,
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0x3e, 42, 0x00, 0x00, 0x78, 0x52, 0x4a, 0x52, 0x78, 0x6e,
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0x48, 0x46, 0x48, 0x6e, 0x5f, 0x49, 0x42, 0x49,
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0x5f, 0x5f, 0x49, 0x42, 0x49, 0x5f, 0x6e, 0x48,
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0x46, 0x48, 0x6e, 0x78, 0x52, 0x4a, 0x52, 0x78,
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0x00, 0x00, 0x09, 0x1b, 0x34, 0x49, 0x5c, 0x9b,
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0xd0, 0xff,
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0x78, 6, 0x44, 0x00, 0xf2, 0x01, 0x01, 0x80,
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0x7f, 18, 0x2a, 0x1c, 0x00, 0xc8, 0x02, 0x58, 0x03, 0x84,
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0x12, 0x00, 0x1a, 0x04, 0x08, 0x0c, 0x10, 0x14,
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0x18, 0x20,
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0x96, 3, 0x01, 0x08, 0x04,
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0xa0, 4, 0x44, 0x44, 0x44, 0x04,
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0xf0, 13, 0x01, 0x00, 0x00, 0x00, 0x22, 0x00, 0x20, 0x00,
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0x3f, 0x00, 0x0a, 0x01, 0x00,
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0xff, 1, 0x04, /* page 4 */
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0, LOAD_PAGE4, /* load the page 4 */
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0x11, 1, 0x01,
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0, END_OF_SEQUENCE /* end of sequence */
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};
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#define SKIP 0xaa
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/* page 4 - the value SKIP says skip the index - see reg_w_page() */
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static const __u8 page4_7311[] = {
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SKIP, SKIP, 0x04, 0x54, 0x07, 0x2b, 0x09, 0x0f,
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0x09, 0x00, SKIP, SKIP, 0x07, 0x00, 0x00, 0x62,
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0x08, SKIP, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x03, 0xa0, 0x01, 0xf4, SKIP,
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SKIP, 0x00, 0x08, SKIP, 0x03, SKIP, 0x00, 0x68,
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0xca, 0x10, 0x06, 0x78, 0x00, 0x00, 0x00, 0x00,
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0x23, 0x28, 0x04, 0x11, 0x00, 0x00
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};
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static void reg_w_buf(struct gspca_dev *gspca_dev,
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__u8 index,
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const u8 *buffer, int len)
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{
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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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memcpy(gspca_dev->usb_buf, buffer, len);
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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0, /* request */
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, /* value */
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index, gspca_dev->usb_buf, len,
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500);
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if (ret < 0) {
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pr_err("reg_w_buf() failed index 0x%02x, error %d\n",
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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_w(struct gspca_dev *gspca_dev,
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__u8 index,
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__u8 value)
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{
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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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gspca_dev->usb_buf[0] = value;
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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0, /* request */
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, index, gspca_dev->usb_buf, 1,
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500);
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if (ret < 0) {
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pr_err("reg_w() failed index 0x%02x, value 0x%02x, error %d\n",
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index, value, 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_w_seq(struct gspca_dev *gspca_dev,
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const __u8 *seq, int len)
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{
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while (--len >= 0) {
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reg_w(gspca_dev, seq[0], seq[1]);
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seq += 2;
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}
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}
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/* load the beginning of a page */
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static void reg_w_page(struct gspca_dev *gspca_dev,
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const __u8 *page, int len)
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{
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int index;
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int ret = 0;
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if (gspca_dev->usb_err < 0)
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return;
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for (index = 0; index < len; index++) {
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if (page[index] == SKIP) /* skip this index */
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continue;
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gspca_dev->usb_buf[0] = page[index];
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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0, /* request */
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, index, gspca_dev->usb_buf, 1,
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500);
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if (ret < 0) {
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pr_err("reg_w_page() failed index 0x%02x, value 0x%02x, error %d\n",
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index, page[index], ret);
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gspca_dev->usb_err = ret;
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break;
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}
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}
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}
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/* output a variable sequence */
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static void reg_w_var(struct gspca_dev *gspca_dev,
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const __u8 *seq,
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const __u8 *page4, unsigned int page4_len)
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{
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int index, len;
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for (;;) {
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index = *seq++;
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len = *seq++;
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switch (len) {
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case END_OF_SEQUENCE:
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return;
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case LOAD_PAGE4:
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reg_w_page(gspca_dev, page4, page4_len);
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break;
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default:
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if (len > USB_BUF_SZ) {
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gspca_err(gspca_dev, "Incorrect variable sequence\n");
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return;
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}
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while (len > 0) {
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if (len < 8) {
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reg_w_buf(gspca_dev,
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index, seq, len);
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seq += len;
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break;
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}
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reg_w_buf(gspca_dev, index, seq, 8);
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seq += 8;
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index += 8;
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len -= 8;
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}
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}
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}
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/* not reached */
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}
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/* this function is called at probe time for pac7311 */
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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 cam *cam = &gspca_dev->cam;
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cam->cam_mode = vga_mode;
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cam->nmodes = ARRAY_SIZE(vga_mode);
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cam->input_flags = V4L2_IN_ST_VFLIP;
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return 0;
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}
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static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
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{
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reg_w(gspca_dev, 0xff, 0x04);
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reg_w(gspca_dev, 0x10, val);
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/* load registers to sensor (Bit 0, auto clear) */
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reg_w(gspca_dev, 0x11, 0x01);
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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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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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reg_w(gspca_dev, 0x0e, 0x00);
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reg_w(gspca_dev, 0x0f, gspca_dev->gain->maximum - val + 1);
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/* load registers to sensor (Bit 0, auto clear) */
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reg_w(gspca_dev, 0x11, 0x01);
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}
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static void setexposure(struct gspca_dev *gspca_dev, s32 val)
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{
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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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reg_w(gspca_dev, 0x02, val);
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/* load registers to sensor (Bit 0, auto clear) */
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reg_w(gspca_dev, 0x11, 0x01);
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/*
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* Page 1 register 8 must always be 0x08 except when not in
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* 640x480 mode and page 4 reg 2 <= 3 then it must be 9
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*/
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reg_w(gspca_dev, 0xff, 0x01);
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if (gspca_dev->pixfmt.width != 640 && val <= 3)
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reg_w(gspca_dev, 0x08, 0x09);
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else
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reg_w(gspca_dev, 0x08, 0x08);
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/*
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* Page1 register 80 sets the compression balance, normally we
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* want / use 0x1c, but for 640x480@30fps we must allow the
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* camera to use higher compression or we may run out of
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* bandwidth.
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*/
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if (gspca_dev->pixfmt.width == 640 && val == 2)
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reg_w(gspca_dev, 0x80, 0x01);
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else
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reg_w(gspca_dev, 0x80, 0x1c);
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/* load registers to sensor (Bit 0, auto clear) */
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reg_w(gspca_dev, 0x11, 0x01);
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}
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static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip)
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{
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__u8 data;
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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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data = (hflip ? 0x04 : 0x00) |
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(vflip ? 0x08 : 0x00);
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reg_w(gspca_dev, 0x21, data);
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/* load registers to sensor (Bit 0, auto clear) */
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reg_w(gspca_dev, 0x11, 0x01);
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}
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/* this function is called at probe and resume time for pac7311 */
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static int sd_init(struct gspca_dev *gspca_dev)
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{
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reg_w_seq(gspca_dev, init_7311, sizeof(init_7311)/2);
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return gspca_dev->usb_err;
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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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struct sd *sd = (struct sd *)gspca_dev;
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gspca_dev->usb_err = 0;
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if (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
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/* when switching to autogain set defaults to make sure
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we are on a valid point of the autogain gain /
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exposure knee graph, and give this change time to
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take effect before doing autogain. */
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gspca_dev->exposure->val = PAC7311_EXPOSURE_DEFAULT;
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gspca_dev->gain->val = PAC7311_GAIN_DEFAULT;
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sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
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}
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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_CONTRAST:
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setcontrast(gspca_dev, ctrl->val);
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break;
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case V4L2_CID_AUTOGAIN:
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if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
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setexposure(gspca_dev, gspca_dev->exposure->val);
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if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
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setgain(gspca_dev, gspca_dev->gain->val);
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break;
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case V4L2_CID_HFLIP:
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sethvflip(gspca_dev, sd->hflip->val, 1);
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break;
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default:
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return -EINVAL;
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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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/* this function is called at probe time */
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static int sd_init_controls(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 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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sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_CONTRAST, 0, 15, 1, 7);
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gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
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gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_EXPOSURE, 2, 63, 1,
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PAC7311_EXPOSURE_DEFAULT);
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gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
|
|
V4L2_CID_GAIN, 0, 244, 1,
|
|
PAC7311_GAIN_DEFAULT);
|
|
sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
|
|
V4L2_CID_HFLIP, 0, 1, 1, 0);
|
|
|
|
if (hdl->error) {
|
|
pr_err("Could not initialize controls\n");
|
|
return hdl->error;
|
|
}
|
|
|
|
v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
|
|
return 0;
|
|
}
|
|
|
|
/* -- start the camera -- */
|
|
static int sd_start(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
sd->sof_read = 0;
|
|
|
|
reg_w_var(gspca_dev, start_7311,
|
|
page4_7311, sizeof(page4_7311));
|
|
setcontrast(gspca_dev, v4l2_ctrl_g_ctrl(sd->contrast));
|
|
setgain(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->gain));
|
|
setexposure(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->exposure));
|
|
sethvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip), 1);
|
|
|
|
/* set correct resolution */
|
|
switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
|
|
case 2: /* 160x120 */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x17, 0x20);
|
|
reg_w(gspca_dev, 0x87, 0x10);
|
|
break;
|
|
case 1: /* 320x240 */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x17, 0x30);
|
|
reg_w(gspca_dev, 0x87, 0x11);
|
|
break;
|
|
case 0: /* 640x480 */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x17, 0x00);
|
|
reg_w(gspca_dev, 0x87, 0x12);
|
|
break;
|
|
}
|
|
|
|
sd->sof_read = 0;
|
|
sd->autogain_ignore_frames = 0;
|
|
atomic_set(&sd->avg_lum, -1);
|
|
|
|
/* start stream */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x78, 0x05);
|
|
|
|
return gspca_dev->usb_err;
|
|
}
|
|
|
|
static void sd_stopN(struct gspca_dev *gspca_dev)
|
|
{
|
|
reg_w(gspca_dev, 0xff, 0x04);
|
|
reg_w(gspca_dev, 0x27, 0x80);
|
|
reg_w(gspca_dev, 0x28, 0xca);
|
|
reg_w(gspca_dev, 0x29, 0x53);
|
|
reg_w(gspca_dev, 0x2a, 0x0e);
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x3e, 0x20);
|
|
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
|
|
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
|
|
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
|
|
}
|
|
|
|
static void do_autogain(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
int avg_lum = atomic_read(&sd->avg_lum);
|
|
int desired_lum, deadzone;
|
|
|
|
if (avg_lum == -1)
|
|
return;
|
|
|
|
desired_lum = 170;
|
|
deadzone = 20;
|
|
|
|
if (sd->autogain_ignore_frames > 0)
|
|
sd->autogain_ignore_frames--;
|
|
else if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
|
|
desired_lum, deadzone))
|
|
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
|
|
}
|
|
|
|
/* JPEG header, part 1 */
|
|
static const unsigned char pac_jpeg_header1[] = {
|
|
0xff, 0xd8, /* SOI: Start of Image */
|
|
|
|
0xff, 0xc0, /* SOF0: Start of Frame (Baseline DCT) */
|
|
0x00, 0x11, /* length = 17 bytes (including this length field) */
|
|
0x08 /* Precision: 8 */
|
|
/* 2 bytes is placed here: number of image lines */
|
|
/* 2 bytes is placed here: samples per line */
|
|
};
|
|
|
|
/* JPEG header, continued */
|
|
static const unsigned char pac_jpeg_header2[] = {
|
|
0x03, /* Number of image components: 3 */
|
|
0x01, 0x21, 0x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */
|
|
0x02, 0x11, 0x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */
|
|
0x03, 0x11, 0x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */
|
|
|
|
0xff, 0xda, /* SOS: Start Of Scan */
|
|
0x00, 0x0c, /* length = 12 bytes (including this length field) */
|
|
0x03, /* number of components: 3 */
|
|
0x01, 0x00, /* selector 1, table 0x00 */
|
|
0x02, 0x11, /* selector 2, table 0x11 */
|
|
0x03, 0x11, /* selector 3, table 0x11 */
|
|
0x00, 0x3f, /* Spectral selection: 0 .. 63 */
|
|
0x00 /* Successive approximation: 0 */
|
|
};
|
|
|
|
static void pac_start_frame(struct gspca_dev *gspca_dev,
|
|
__u16 lines, __u16 samples_per_line)
|
|
{
|
|
unsigned char tmpbuf[4];
|
|
|
|
gspca_frame_add(gspca_dev, FIRST_PACKET,
|
|
pac_jpeg_header1, sizeof(pac_jpeg_header1));
|
|
|
|
tmpbuf[0] = lines >> 8;
|
|
tmpbuf[1] = lines & 0xff;
|
|
tmpbuf[2] = samples_per_line >> 8;
|
|
tmpbuf[3] = samples_per_line & 0xff;
|
|
|
|
gspca_frame_add(gspca_dev, INTER_PACKET,
|
|
tmpbuf, sizeof(tmpbuf));
|
|
gspca_frame_add(gspca_dev, INTER_PACKET,
|
|
pac_jpeg_header2, sizeof(pac_jpeg_header2));
|
|
}
|
|
|
|
/* this function is run at interrupt level */
|
|
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
|
|
u8 *data, /* isoc packet */
|
|
int len) /* iso packet length */
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
u8 *image;
|
|
unsigned char *sof;
|
|
|
|
sof = pac_find_sof(gspca_dev, &sd->sof_read, data, len);
|
|
if (sof) {
|
|
int n, lum_offset, footer_length;
|
|
|
|
/*
|
|
* 6 bytes after the FF D9 EOF marker a number of lumination
|
|
* bytes are send corresponding to different parts of the
|
|
* image, the 14th and 15th byte after the EOF seem to
|
|
* correspond to the center of the image.
|
|
*/
|
|
lum_offset = 24 + sizeof pac_sof_marker;
|
|
footer_length = 26;
|
|
|
|
/* Finish decoding current frame */
|
|
n = (sof - data) - (footer_length + sizeof pac_sof_marker);
|
|
if (n < 0) {
|
|
gspca_dev->image_len += n;
|
|
n = 0;
|
|
} else {
|
|
gspca_frame_add(gspca_dev, INTER_PACKET, data, n);
|
|
}
|
|
image = gspca_dev->image;
|
|
if (image != NULL
|
|
&& image[gspca_dev->image_len - 2] == 0xff
|
|
&& image[gspca_dev->image_len - 1] == 0xd9)
|
|
gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
|
|
|
|
n = sof - data;
|
|
len -= n;
|
|
data = sof;
|
|
|
|
/* Get average lumination */
|
|
if (gspca_dev->last_packet_type == LAST_PACKET &&
|
|
n >= lum_offset)
|
|
atomic_set(&sd->avg_lum, data[-lum_offset] +
|
|
data[-lum_offset + 1]);
|
|
else
|
|
atomic_set(&sd->avg_lum, -1);
|
|
|
|
/* Start the new frame with the jpeg header */
|
|
pac_start_frame(gspca_dev,
|
|
gspca_dev->pixfmt.height, gspca_dev->pixfmt.width);
|
|
}
|
|
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_INPUT)
|
|
static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
|
|
u8 *data, /* interrupt packet data */
|
|
int len) /* interrupt packet length */
|
|
{
|
|
int ret = -EINVAL;
|
|
u8 data0, data1;
|
|
|
|
if (len == 2) {
|
|
data0 = data[0];
|
|
data1 = data[1];
|
|
if ((data0 == 0x00 && data1 == 0x11) ||
|
|
(data0 == 0x22 && data1 == 0x33) ||
|
|
(data0 == 0x44 && data1 == 0x55) ||
|
|
(data0 == 0x66 && data1 == 0x77) ||
|
|
(data0 == 0x88 && data1 == 0x99) ||
|
|
(data0 == 0xaa && data1 == 0xbb) ||
|
|
(data0 == 0xcc && data1 == 0xdd) ||
|
|
(data0 == 0xee && data1 == 0xff)) {
|
|
input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
|
|
input_sync(gspca_dev->input_dev);
|
|
input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
|
|
input_sync(gspca_dev->input_dev);
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
static const struct sd_desc sd_desc = {
|
|
.name = MODULE_NAME,
|
|
.config = sd_config,
|
|
.init = sd_init,
|
|
.init_controls = sd_init_controls,
|
|
.start = sd_start,
|
|
.stopN = sd_stopN,
|
|
.pkt_scan = sd_pkt_scan,
|
|
.dq_callback = do_autogain,
|
|
#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(0x093a, 0x2600)},
|
|
{USB_DEVICE(0x093a, 0x2601)},
|
|
{USB_DEVICE(0x093a, 0x2603)},
|
|
{USB_DEVICE(0x093a, 0x2608)},
|
|
{USB_DEVICE(0x093a, 0x260e)},
|
|
{USB_DEVICE(0x093a, 0x260f)},
|
|
{}
|
|
};
|
|
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 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
|
|
};
|
|
|
|
module_usb_driver(sd_driver);
|