diff options
Diffstat (limited to 'drivers/media/usb/gspca/pac7311.c')
| -rw-r--r-- | drivers/media/usb/gspca/pac7311.c | 696 |
1 files changed, 696 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/pac7311.c b/drivers/media/usb/gspca/pac7311.c new file mode 100644 index 000000000..44db4f4af --- /dev/null +++ b/drivers/media/usb/gspca/pac7311.c @@ -0,0 +1,696 @@ +/* + * Pixart PAC7311 library + * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li + * + * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> + * + * 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. + */ + +/* Some documentation about various registers as determined by trial and error. + * + * Register page 1: + * + * Address Description + * 0x08 Unknown compressor related, must always be 8 except when not + * in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 ! + * 0x1b Auto white balance related, bit 0 is AWB enable (inverted) + * bits 345 seem to toggle per color gains on/off (inverted) + * 0x78 Global control, bit 6 controls the LED (inverted) + * 0x80 Compression balance, interesting settings: + * 0x01 Use this to allow the camera to switch to higher compr. + * on the fly. Needed to stay within bandwidth @ 640x480@30 + * 0x1c From usb captures under Windows for 640x480 + * 0x2a 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 640x480@ < + * 15 fps or 320x240 / 160x120. 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 + * 0x3f From usb captures under Windows for 320x240 + * 0x69 From usb captures under Windows for 160x120 + * + * Register page 4: + * + * Address Description + * 0x02 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? + * 0x0f Master gain 1-245, low value = high gain + * 0x10 Another gain 0-15, limited influence (1-2x gain I guess) + * 0x21 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 + * 0x27 Seems to toggle various gains on / off, Setting bit 7 seems to + * completely disable the analog amplification block. Set to 0x68 + * for max gain, 0x14 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[] = { + 0xff, 0x01, + 0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */ + 0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */ + 0x78, 0x44, /* Bit_0=start stream, Bit_6=LED */ + 0xff, 0x04, + 0x27, 0x80, + 0x28, 0xca, + 0x29, 0x53, + 0x2a, 0x0e, + 0xff, 0x01, + 0x3e, 0x20, +}; + +static const __u8 start_7311[] = { +/* index, len, [value]* */ + 0xff, 1, 0x01, /* page 1 */ + 0x02, 43, 0x48, 0x0a, 0x40, 0x08, 0x00, 0x00, 0x08, 0x00, + 0x06, 0xff, 0x11, 0xff, 0x5a, 0x30, 0x90, 0x4c, + 0x00, 0x07, 0x00, 0x0a, 0x10, 0x00, 0xa0, 0x10, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x0b, 0x01, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, + 0x3e, 42, 0x00, 0x00, 0x78, 0x52, 0x4a, 0x52, 0x78, 0x6e, + 0x48, 0x46, 0x48, 0x6e, 0x5f, 0x49, 0x42, 0x49, + 0x5f, 0x5f, 0x49, 0x42, 0x49, 0x5f, 0x6e, 0x48, + 0x46, 0x48, 0x6e, 0x78, 0x52, 0x4a, 0x52, 0x78, + 0x00, 0x00, 0x09, 0x1b, 0x34, 0x49, 0x5c, 0x9b, + 0xd0, 0xff, + 0x78, 6, 0x44, 0x00, 0xf2, 0x01, 0x01, 0x80, + 0x7f, 18, 0x2a, 0x1c, 0x00, 0xc8, 0x02, 0x58, 0x03, 0x84, + 0x12, 0x00, 0x1a, 0x04, 0x08, 0x0c, 0x10, 0x14, + 0x18, 0x20, + 0x96, 3, 0x01, 0x08, 0x04, + 0xa0, 4, 0x44, 0x44, 0x44, 0x04, + 0xf0, 13, 0x01, 0x00, 0x00, 0x00, 0x22, 0x00, 0x20, 0x00, + 0x3f, 0x00, 0x0a, 0x01, 0x00, + 0xff, 1, 0x04, /* page 4 */ + 0, LOAD_PAGE4, /* load the page 4 */ + 0x11, 1, 0x01, + 0, END_OF_SEQUENCE /* end of sequence */ +}; + +#define SKIP 0xaa +/* page 4 - the value SKIP says skip the index - see reg_w_page() */ +static const __u8 page4_7311[] = { + SKIP, SKIP, 0x04, 0x54, 0x07, 0x2b, 0x09, 0x0f, + 0x09, 0x00, SKIP, SKIP, 0x07, 0x00, 0x00, 0x62, + 0x08, SKIP, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x03, 0xa0, 0x01, 0xf4, SKIP, + SKIP, 0x00, 0x08, SKIP, 0x03, SKIP, 0x00, 0x68, + 0xca, 0x10, 0x06, 0x78, 0x00, 0x00, 0x00, 0x00, + 0x23, 0x28, 0x04, 0x11, 0x00, 0x00 +}; + +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, 0xff, 0x04); + reg_w(gspca_dev, 0x10, val); + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); +} + +static void setgain(struct gspca_dev *gspca_dev, s32 val) +{ + reg_w(gspca_dev, 0xff, 0x04); /* page 4 */ + reg_w(gspca_dev, 0x0e, 0x00); + reg_w(gspca_dev, 0x0f, gspca_dev->gain->maximum - val + 1); + + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); +} + +static void setexposure(struct gspca_dev *gspca_dev, s32 val) +{ + reg_w(gspca_dev, 0xff, 0x04); /* page 4 */ + reg_w(gspca_dev, 0x02, val); + + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); + + /* + * Page 1 register 8 must always be 0x08 except when not in + * 640x480 mode and page 4 reg 2 <= 3 then it must be 9 + */ + reg_w(gspca_dev, 0xff, 0x01); + if (gspca_dev->pixfmt.width != 640 && val <= 3) + reg_w(gspca_dev, 0x08, 0x09); + else + reg_w(gspca_dev, 0x08, 0x08); + + /* + * Page1 register 80 sets the compression balance, normally we + * want / use 0x1c, but for 640x480@30fps 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, 0x80, 0x01); + else + reg_w(gspca_dev, 0x80, 0x1c); + + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); +} + +static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip) +{ + __u8 data; + + reg_w(gspca_dev, 0xff, 0x04); /* page 4 */ + data = (hflip ? 0x04 : 0x00) | + (vflip ? 0x08 : 0x00); + reg_w(gspca_dev, 0x21, data); + + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); +} + +/* 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, 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); |