// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Pixart PAC7311 library
* Copyright ( C ) 2005 Thomas Kaiser thomas @ kaiser - linux . li
*
* V4L2 by Jean - Francois Moine < http : //moinejf.free.fr>
*/
/* Some documentation about various registers as determined by trial and error.
*
* Register page 1 :
*
* Address Description
* 0 x08 Unknown compressor related , must always be 8 except when not
* in 640 x480 resolution and page 4 reg 2 < = 3 then set it to 9 !
* 0 x1b Auto white balance related , bit 0 is AWB enable ( inverted )
* bits 345 seem to toggle per color gains on / off ( inverted )
* 0 x78 Global control , bit 6 controls the LED ( inverted )
* 0 x80 Compression balance , interesting settings :
* 0 x01 Use this to allow the camera to switch to higher compr .
* on the fly . Needed to stay within bandwidth @ 640 x480 @ 30
* 0 x1c From usb captures under Windows for 640 x480
* 0 x2a Values > = this switch the camera to a lower compression ,
* using the same table for both luminance and chrominance .
* This gives a sharper picture . Usable only at 640 x480 @ <
* 15 fps or 320 x240 / 160 x120 . Note currently the driver
* does not use this as the quality gain is small and the
* generated JPG - s are only understood by v4l - utils > = 0 . 8 . 9
* 0 x3f From usb captures under Windows for 320 x240
* 0 x69 From usb captures under Windows for 160 x120
*
* Register page 4 :
*
* Address Description
* 0 x02 Clock divider 2 - 63 , fps = ~ 60 / val . Must be a multiple of 3 on
* the 7302 , so one of 3 , 6 , 9 , . . . , except when between 6 and 12 ?
* 0 x0f Master gain 1 - 245 , low value = high gain
* 0 x10 Another gain 0 - 15 , limited influence ( 1 - 2 x gain I guess )
* 0 x21 Bitfield : 0 - 1 unused , 2 - 3 vflip / hflip , 4 - 5 unknown , 6 - 7 unused
* Note setting vflip disabled leads to a much lower image quality ,
* so we always vflip , and tell userspace to flip it back
* 0 x27 Seems to toggle various gains on / off , Setting bit 7 seems to
* completely disable the analog amplification block . Set to 0 x68
* for max gain , 0 x14 for minimal gain .
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define MODULE_NAME "pac7311"
#include <linux/input.h>
#include "gspca.h"
/* Include pac common sof detection functions */
#include "pac_common.h"
#define PAC7311_GAIN_DEFAULT 122
#define PAC7311_EXPOSURE_DEFAULT 3 /* 20 fps, avoid using high compr. */
MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li" );
MODULE_DESCRIPTION("Pixart PAC7311" );
MODULE_LICENSE("GPL" );
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
struct v4l2_ctrl *contrast;
struct v4l2_ctrl *hflip;
u8 sof_read;
u8 autogain_ignore_frames;
atomic_t avg_lum;
};
static const struct v4l2_pix_format vga_mode[] = {
{160 , 120 , V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 160 ,
.sizeimage = 160 * 120 * 3 / 8 + 590 ,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 2 },
{320 , 240 , V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 320 ,
.sizeimage = 320 * 240 * 3 / 8 + 590 ,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 1 },
{640 , 480 , V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 640 ,
.sizeimage = 640 * 480 * 3 / 8 + 590 ,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 0 },
};
#define LOAD_PAGE4 254
#define END_OF_SEQUENCE 0
static const __u8 init_7311[] = {
0 xff, 0 x01,
0 x78, 0 x40, /* Bit_0=start stream, Bit_6=LED */
0 x78, 0 x40, /* Bit_0=start stream, Bit_6=LED */
0 x78, 0 x44, /* Bit_0=start stream, Bit_6=LED */
0 xff, 0 x04,
0 x27, 0 x80,
0 x28, 0 xca,
0 x29, 0 x53,
0 x2a, 0 x0e,
0 xff, 0 x01,
0 x3e, 0 x20,
};
static const __u8 start_7311[] = {
/* index, len, [value]* */
0 xff, 1 , 0 x01, /* page 1 */
0 x02, 43 , 0 x48, 0 x0a, 0 x40, 0 x08, 0 x00, 0 x00, 0 x08, 0 x00,
0 x06, 0 xff, 0 x11, 0 xff, 0 x5a, 0 x30, 0 x90, 0 x4c,
0 x00, 0 x07, 0 x00, 0 x0a, 0 x10, 0 x00, 0 xa0, 0 x10,
0 x02, 0 x00, 0 x00, 0 x00, 0 x00, 0 x0b, 0 x01, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00,
0 x3e, 42 , 0 x00, 0 x00, 0 x78, 0 x52, 0 x4a, 0 x52, 0 x78, 0 x6e,
0 x48, 0 x46, 0 x48, 0 x6e, 0 x5f, 0 x49, 0 x42, 0 x49,
0 x5f, 0 x5f, 0 x49, 0 x42, 0 x49, 0 x5f, 0 x6e, 0 x48,
0 x46, 0 x48, 0 x6e, 0 x78, 0 x52, 0 x4a, 0 x52, 0 x78,
0 x00, 0 x00, 0 x09, 0 x1b, 0 x34, 0 x49, 0 x5c, 0 x9b,
0 xd0, 0 xff,
0 x78, 6 , 0 x44, 0 x00, 0 xf2, 0 x01, 0 x01, 0 x80,
0 x7f, 18 , 0 x2a, 0 x1c, 0 x00, 0 xc8, 0 x02, 0 x58, 0 x03, 0 x84,
0 x12, 0 x00, 0 x1a, 0 x04, 0 x08, 0 x0c, 0 x10, 0 x14,
0 x18, 0 x20,
0 x96, 3 , 0 x01, 0 x08, 0 x04,
0 xa0, 4 , 0 x44, 0 x44, 0 x44, 0 x04,
0 xf0, 13 , 0 x01, 0 x00, 0 x00, 0 x00, 0 x22, 0 x00, 0 x20, 0 x00,
0 x3f, 0 x00, 0 x0a, 0 x01, 0 x00,
0 xff, 1 , 0 x04, /* page 4 */
0 , LOAD_PAGE4, /* load the page 4 */
0 x11, 1 , 0 x01,
0 , END_OF_SEQUENCE /* end of sequence */
};
#define SKIP 0 xaa
/* page 4 - the value SKIP says skip the index - see reg_w_page() */
static const __u8 page4_7311[] = {
SKIP, SKIP, 0 x04, 0 x54, 0 x07, 0 x2b, 0 x09, 0 x0f,
0 x09, 0 x00, SKIP, SKIP, 0 x07, 0 x00, 0 x00, 0 x62,
0 x08, SKIP, 0 x07, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x03, 0 xa0, 0 x01, 0 xf4, SKIP,
SKIP, 0 x00, 0 x08, SKIP, 0 x03, SKIP, 0 x00, 0 x68,
0 xca, 0 x10, 0 x06, 0 x78, 0 x00, 0 x00, 0 x00, 0 x00,
0 x23, 0 x28, 0 x04, 0 x11, 0 x00, 0 x00
};
static void reg_w_buf(struct gspca_dev *gspca_dev,
__u8 index,
const u8 *buffer, int len)
{
int ret;
if (gspca_dev->usb_err < 0 )
return ;
memcpy(gspca_dev->usb_buf, buffer, len);
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0 ),
0 , /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0 , /* value */
index, gspca_dev->usb_buf, len,
500 );
if (ret < 0 ) {
pr_err("reg_w_buf() failed index 0x%02x, error %d\n" ,
index, ret);
gspca_dev->usb_err = ret;
}
}
static void reg_w(struct gspca_dev *gspca_dev,
__u8 index,
__u8 value)
{
int ret;
if (gspca_dev->usb_err < 0 )
return ;
gspca_dev->usb_buf[0 ] = value;
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0 ),
0 , /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0 , index, gspca_dev->usb_buf, 1 ,
500 );
if (ret < 0 ) {
pr_err("reg_w() failed index 0x%02x, value 0x%02x, error %d\n" ,
index, value, ret);
gspca_dev->usb_err = ret;
}
}
static void reg_w_seq(struct gspca_dev *gspca_dev,
const __u8 *seq, int len)
{
while (--len >= 0 ) {
reg_w(gspca_dev, seq[0 ], seq[1 ]);
seq += 2 ;
}
}
/* load the beginning of a page */
static void reg_w_page(struct gspca_dev *gspca_dev,
const __u8 *page, int len)
{
int index;
int ret = 0 ;
if (gspca_dev->usb_err < 0 )
return ;
for (index = 0 ; index < len; index++) {
if (page[index] == SKIP) /* skip this index */
continue ;
gspca_dev->usb_buf[0 ] = page[index];
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0 ),
0 , /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0 , index, gspca_dev->usb_buf, 1 ,
500 );
if (ret < 0 ) {
pr_err("reg_w_page() failed index 0x%02x, value 0x%02x, error %d\n" ,
index, page[index], ret);
gspca_dev->usb_err = ret;
break ;
}
}
}
/* output a variable sequence */
static void reg_w_var(struct gspca_dev *gspca_dev,
const __u8 *seq,
const __u8 *page4, unsigned int page4_len)
{
int index, len;
for (;;) {
index = *seq++;
len = *seq++;
switch (len) {
case END_OF_SEQUENCE:
return ;
case LOAD_PAGE4:
reg_w_page(gspca_dev, page4, page4_len);
break ;
default :
if (len > USB_BUF_SZ) {
gspca_err(gspca_dev, "Incorrect variable sequence\n" );
return ;
}
while (len > 0 ) {
if (len < 8 ) {
reg_w_buf(gspca_dev,
index, seq, len);
seq += len;
break ;
}
reg_w_buf(gspca_dev, index, seq, 8 );
seq += 8 ;
index += 8 ;
len -= 8 ;
}
}
}
/* not reached */
}
/* this function is called at probe time for pac7311 */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct cam *cam = &gspca_dev->cam;
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);
cam->input_flags = V4L2_IN_ST_VFLIP;
return 0 ;
}
static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
reg_w(gspca_dev, 0 xff, 0 x04);
reg_w(gspca_dev, 0 x10, val);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0 x11, 0 x01);
}
static void setgain(struct gspca_dev *gspca_dev, s32 val)
{
reg_w(gspca_dev, 0 xff, 0 x04); /* page 4 */
reg_w(gspca_dev, 0 x0e, 0 x00);
reg_w(gspca_dev, 0 x0f, gspca_dev->gain->maximum - val + 1 );
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0 x11, 0 x01);
}
static void setexposure(struct gspca_dev *gspca_dev, s32 val)
{
reg_w(gspca_dev, 0 xff, 0 x04); /* page 4 */
reg_w(gspca_dev, 0 x02, val);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0 x11, 0 x01);
/*
* Page 1 register 8 must always be 0 x08 except when not in
* 640 x480 mode and page 4 reg 2 < = 3 then it must be 9
*/
reg_w(gspca_dev, 0 xff, 0 x01);
if (gspca_dev->pixfmt.width != 640 && val <= 3 )
reg_w(gspca_dev, 0 x08, 0 x09);
else
reg_w(gspca_dev, 0 x08, 0 x08);
/*
* Page1 register 80 sets the compression balance , normally we
* want / use 0 x1c , but for 640 x480 @ 30 fps we must allow the
* camera to use higher compression or we may run out of
* bandwidth .
*/
if (gspca_dev->pixfmt.width == 640 && val == 2 )
reg_w(gspca_dev, 0 x80, 0 x01);
else
reg_w(gspca_dev, 0 x80, 0 x1c);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0 x11, 0 x01);
}
static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip)
{
__u8 data;
reg_w(gspca_dev, 0 xff, 0 x04); /* page 4 */
data = (hflip ? 0 x04 : 0 x00) |
(vflip ? 0 x08 : 0 x00);
reg_w(gspca_dev, 0 x21, data);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0 x11, 0 x01);
}
/* this function is called at probe and resume time for pac7311 */
static int sd_init(struct gspca_dev *gspca_dev)
{
reg_w_seq(gspca_dev, init_7311, sizeof (init_7311)/2 );
return gspca_dev->usb_err;
}
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 (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
/* when switching to autogain set defaults to make sure
we are on a valid point of the autogain gain /
exposure knee graph , and give this change time to
take effect before doing autogain. */
gspca_dev->exposure->val = PAC7311_EXPOSURE_DEFAULT;
gspca_dev->gain->val = PAC7311_GAIN_DEFAULT;
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
}
if (!gspca_dev->streaming)
return 0 ;
switch (ctrl->id) {
case V4L2_CID_CONTRAST:
setcontrast(gspca_dev, ctrl->val);
break ;
case V4L2_CID_AUTOGAIN:
if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
setexposure(gspca_dev, gspca_dev->exposure->val);
if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
setgain(gspca_dev, gspca_dev->gain->val);
break ;
case V4L2_CID_HFLIP:
sethvflip(gspca_dev, sd->hflip->val, 1 );
break ;
default :
return -EINVAL;
}
return gspca_dev->usb_err;
}
static const struct v4l2_ctrl_ops sd_ctrl_ops = {
.s_ctrl = sd_s_ctrl,
};
/* this function is called at probe time */
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, 5 );
sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_CONTRAST, 0 , 15 , 1 , 7 );
gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_AUTOGAIN, 0 , 1 , 1 , 1 );
gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_EXPOSURE, 2 , 63 , 1 ,
PAC7311_EXPOSURE_DEFAULT);
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, 0 xff, 0 x01);
reg_w(gspca_dev, 0 x17, 0 x20);
reg_w(gspca_dev, 0 x87, 0 x10);
break ;
case 1 : /* 320x240 */
reg_w(gspca_dev, 0 xff, 0 x01);
reg_w(gspca_dev, 0 x17, 0 x30);
reg_w(gspca_dev, 0 x87, 0 x11);
break ;
case 0 : /* 640x480 */
reg_w(gspca_dev, 0 xff, 0 x01);
reg_w(gspca_dev, 0 x17, 0 x00);
reg_w(gspca_dev, 0 x87, 0 x12);
break ;
}
sd->sof_read = 0 ;
sd->autogain_ignore_frames = 0 ;
atomic_set(&sd->avg_lum, -1 );
/* start stream */
reg_w(gspca_dev, 0 xff, 0 x01);
reg_w(gspca_dev, 0 x78, 0 x05);
return gspca_dev->usb_err;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
reg_w(gspca_dev, 0 xff, 0 x04);
reg_w(gspca_dev, 0 x27, 0 x80);
reg_w(gspca_dev, 0 x28, 0 xca);
reg_w(gspca_dev, 0 x29, 0 x53);
reg_w(gspca_dev, 0 x2a, 0 x0e);
reg_w(gspca_dev, 0 xff, 0 x01);
reg_w(gspca_dev, 0 x3e, 0 x20);
reg_w(gspca_dev, 0 x78, 0 x44); /* Bit_0=start stream, Bit_6=LED */
reg_w(gspca_dev, 0 x78, 0 x44); /* Bit_0=start stream, Bit_6=LED */
reg_w(gspca_dev, 0 x78, 0 x44); /* 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[] = {
0 xff, 0 xd8, /* SOI: Start of Image */
0 xff, 0 xc0, /* SOF0: Start of Frame (Baseline DCT) */
0 x00, 0 x11, /* length = 17 bytes (including this length field) */
0 x08 /* 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[] = {
0 x03, /* Number of image components: 3 */
0 x01, 0 x21, 0 x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */
0 x02, 0 x11, 0 x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */
0 x03, 0 x11, 0 x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */
0 xff, 0 xda, /* SOS: Start Of Scan */
0 x00, 0 x0c, /* length = 12 bytes (including this length field) */
0 x03, /* number of components: 3 */
0 x01, 0 x00, /* selector 1, table 0x00 */
0 x02, 0 x11, /* selector 2, table 0x11 */
0 x03, 0 x11, /* selector 3, table 0x11 */
0 x00, 0 x3f, /* Spectral selection: 0 .. 63 */
0 x00 /* 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 & 0 xff;
tmpbuf[2 ] = samples_per_line >> 8 ;
tmpbuf[3 ] = samples_per_line & 0 xff;
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 14 th and 15 th 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 ] == 0 xff
&& image[gspca_dev->image_len - 1 ] == 0 xd9)
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 == 0 x00 && data1 == 0 x11) ||
(data0 == 0 x22 && data1 == 0 x33) ||
(data0 == 0 x44 && data1 == 0 x55) ||
(data0 == 0 x66 && data1 == 0 x77) ||
(data0 == 0 x88 && data1 == 0 x99) ||
(data0 == 0 xaa && data1 == 0 xbb) ||
(data0 == 0 xcc && data1 == 0 xdd) ||
(data0 == 0 xee && data1 == 0 xff)) {
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(0 x093a, 0 x2600)},
{USB_DEVICE(0 x093a, 0 x2601)},
{USB_DEVICE(0 x093a, 0 x2603)},
{USB_DEVICE(0 x093a, 0 x2608)},
{USB_DEVICE(0 x093a, 0 x260e)},
{USB_DEVICE(0 x093a, 0 x260f)},
{}
};
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);
Messung V0.5 in Prozent C=89 H=97 G=93
¤ Dauer der Verarbeitung: 0.24 Sekunden
(vorverarbeitet am 2026-10-02)
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