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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Jeilinj subdriver
*
* Supports some Jeilin dual-mode cameras which use bulk transport and
* download raw JPEG data.
*
* Copyright (C) 2009 Theodore Kilgore
*
* Sportscam DV15 support and control settings are
* Copyright (C) 2011 Patrice Chotard
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define MODULE_NAME "jeilinj"
#include <linux/slab.h>
#include "gspca.h"
#include "jpeg.h"
MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>");
MODULE_DESCRIPTION("GSPCA/JEILINJ USB Camera Driver");
MODULE_LICENSE("GPL");
/* Default timeouts, in ms */
#define JEILINJ_CMD_TIMEOUT 500
#define JEILINJ_CMD_DELAY 160
#define JEILINJ_DATA_TIMEOUT 1000
/* Maximum transfer size to use. */
#define JEILINJ_MAX_TRANSFER 0x200
#define FRAME_HEADER_LEN 0x10
#define FRAME_START 0xFFFFFFFF
enum {
SAKAR_57379,
SPORTSCAM_DV15,
};
#define CAMQUALITY_MIN 0 /* highest cam quality */
#define CAMQUALITY_MAX 97 /* lowest cam quality */
/* Structure to hold all of our device specific stuff */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
int blocks_left;
const struct v4l2_pix_format *cap_mode;
struct v4l2_ctrl *freq;
struct v4l2_ctrl *jpegqual;
/* Driver stuff */
u8 type;
u8 quality; /* image quality */
#define QUALITY_MIN 35
#define QUALITY_MAX 85
#define QUALITY_DEF 85
u8 jpeg_hdr[JPEG_HDR_SZ];
};
struct jlj_command {
unsigned char instruction[2];
unsigned char ack_wanted;
unsigned char delay;
};
/* AFAICT these cameras will only do 320x240. */
static struct v4l2_pix_format jlj_mode[] = {
{ 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 0},
{ 640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 0}
};
/*
* cam uses endpoint 0x03 to send commands, 0x84 for read commands,
* and 0x82 for bulk transfer.
*/
/* All commands are two bytes only */
static void jlj_write2(struct gspca_dev *gspca_dev, unsigned char *command)
{
int retval;
if (gspca_dev->usb_err < 0)
return;
memcpy(gspca_dev->usb_buf, command, 2);
retval = usb_bulk_msg(gspca_dev->dev,
usb_sndbulkpipe(gspca_dev->dev, 3),
gspca_dev->usb_buf, 2, NULL, 500);
if (retval < 0) {
pr_err("command write [%02x] error %d\n",
gspca_dev->usb_buf[0], retval);
gspca_dev->usb_err = retval;
}
}
/* Responses are one byte only */
static void jlj_read1(struct gspca_dev *gspca_dev, unsigned char *response)
{
int retval;
if (gspca_dev->usb_err < 0)
return;
retval = usb_bulk_msg(gspca_dev->dev,
usb_rcvbulkpipe(gspca_dev->dev, 0x84),
gspca_dev->usb_buf, 1, NULL, 500);
*response = gspca_dev->usb_buf[0];
if (retval < 0) {
pr_err("read command [%02x] error %d\n",
gspca_dev->usb_buf[0], retval);
gspca_dev->usb_err = retval;
}
}
static void setfreq(struct gspca_dev *gspca_dev, s32 val)
{
u8 freq_commands[][2] = {
{0x71, 0x80},
{0x70, 0x07}
};
freq_commands[0][1] |= val >> 1;
jlj_write2(gspca_dev, freq_commands[0]);
jlj_write2(gspca_dev, freq_commands[1]);
}
static void setcamquality(struct gspca_dev *gspca_dev, s32 val)
{
u8 quality_commands[][2] = {
{0x71, 0x1E},
{0x70, 0x06}
};
u8 camquality;
/* adapt camera quality from jpeg quality */
camquality = ((QUALITY_MAX - val) * CAMQUALITY_MAX)
/ (QUALITY_MAX - QUALITY_MIN);
quality_commands[0][1] += camquality;
jlj_write2(gspca_dev, quality_commands[0]);
jlj_write2(gspca_dev, quality_commands[1]);
}
static void setautogain(struct gspca_dev *gspca_dev, s32 val)
{
u8 autogain_commands[][2] = {
{0x94, 0x02},
{0xcf, 0x00}
};
autogain_commands[1][1] = val << 4;
jlj_write2(gspca_dev, autogain_commands[0]);
jlj_write2(gspca_dev, autogain_commands[1]);
}
static void setred(struct gspca_dev *gspca_dev, s32 val)
{
u8 setred_commands[][2] = {
{0x94, 0x02},
{0xe6, 0x00}
};
setred_commands[1][1] = val;
jlj_write2(gspca_dev, setred_commands[0]);
jlj_write2(gspca_dev, setred_commands[1]);
}
static void setgreen(struct gspca_dev *gspca_dev, s32 val)
{
u8 setgreen_commands[][2] = {
{0x94, 0x02},
{0xe7, 0x00}
};
setgreen_commands[1][1] = val;
jlj_write2(gspca_dev, setgreen_commands[0]);
jlj_write2(gspca_dev, setgreen_commands[1]);
}
static void setblue(struct gspca_dev *gspca_dev, s32 val)
{
u8 setblue_commands[][2] = {
{0x94, 0x02},
{0xe9, 0x00}
};
setblue_commands[1][1] = val;
jlj_write2(gspca_dev, setblue_commands[0]);
jlj_write2(gspca_dev, setblue_commands[1]);
}
static int jlj_start(struct gspca_dev *gspca_dev)
{
int i;
int start_commands_size;
u8 response = 0xff;
struct sd *sd = (struct sd *) gspca_dev;
struct jlj_command start_commands[] = {
{{0x71, 0x81}, 0, 0},
{{0x70, 0x05}, 0, JEILINJ_CMD_DELAY},
{{0x95, 0x70}, 1, 0},
{{0x71, 0x81 - gspca_dev->curr_mode}, 0, 0},
{{0x70, 0x04}, 0, JEILINJ_CMD_DELAY},
{{0x95, 0x70}, 1, 0},
{{0x71, 0x00}, 0, 0}, /* start streaming ??*/
{{0x70, 0x08}, 0, JEILINJ_CMD_DELAY},
{{0x95, 0x70}, 1, 0},
#define SPORTSCAM_DV15_CMD_SIZE 9
{{0x94, 0x02}, 0, 0},
{{0xde, 0x24}, 0, 0},
{{0x94, 0x02}, 0, 0},
{{0xdd, 0xf0}, 0, 0},
{{0x94, 0x02}, 0, 0},
{{0xe3, 0x2c}, 0, 0},
{{0x94, 0x02}, 0, 0},
{{0xe4, 0x00}, 0, 0},
{{0x94, 0x02}, 0, 0},
{{0xe5, 0x00}, 0, 0},
{{0x94, 0x02}, 0, 0},
{{0xe6, 0x2c}, 0, 0},
{{0x94, 0x03}, 0, 0},
{{0xaa, 0x00}, 0, 0}
};
sd->blocks_left = 0;
/* Under Windows, USB spy shows that only the 9 first start
* commands are used for SPORTSCAM_DV15 webcam
*/
if (sd->type == SPORTSCAM_DV15)
start_commands_size = SPORTSCAM_DV15_CMD_SIZE;
else
start_commands_size = ARRAY_SIZE(start_commands);
for (i = 0; i < start_commands_size; i++) {
jlj_write2(gspca_dev, start_commands[i].instruction);
if (start_commands[i].delay)
msleep(start_commands[i].delay);
if (start_commands[i].ack_wanted)
jlj_read1(gspca_dev, &response);
}
setcamquality(gspca_dev, v4l2_ctrl_g_ctrl(sd->jpegqual));
msleep(2);
setfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->freq));
if (gspca_dev->usb_err < 0)
gspca_err(gspca_dev, "Start streaming command failed\n");
return gspca_dev->usb_err;
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, int len)
{
struct sd *sd = (struct sd *) gspca_dev;
int packet_type;
u32 header_marker;
gspca_dbg(gspca_dev, D_STREAM, "Got %d bytes out of %d for Block 0\n",
len, JEILINJ_MAX_TRANSFER);
if (len != JEILINJ_MAX_TRANSFER) {
gspca_dbg(gspca_dev, D_PACK, "bad length\n");
goto discard;
}
/* check if it's start of frame */
header_marker = ((u32 *)data)[0];
if (header_marker == FRAME_START) {
sd->blocks_left = data[0x0a] - 1;
gspca_dbg(gspca_dev, D_STREAM, "blocks_left = 0x%x\n",
sd->blocks_left);
/* Start a new frame, and add the JPEG header, first thing */
gspca_frame_add(gspca_dev, FIRST_PACKET,
sd->jpeg_hdr, JPEG_HDR_SZ);
/* Toss line 0 of data block 0, keep the rest. */
gspca_frame_add(gspca_dev, INTER_PACKET,
data + FRAME_HEADER_LEN,
JEILINJ_MAX_TRANSFER - FRAME_HEADER_LEN);
} else if (sd->blocks_left > 0) {
gspca_dbg(gspca_dev, D_STREAM, "%d blocks remaining for frame\n",
sd->blocks_left);
sd->blocks_left -= 1;
if (sd->blocks_left == 0)
packet_type = LAST_PACKET;
else
packet_type = INTER_PACKET;
gspca_frame_add(gspca_dev, packet_type,
data, JEILINJ_MAX_TRANSFER);
} else
goto discard;
return;
discard:
/* Discard data until a new frame starts. */
gspca_dev->last_packet_type = DISCARD_PACKET;
}
/* This function is called at probe time just before sd_init */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct cam *cam = &gspca_dev->cam;
struct sd *dev = (struct sd *) gspca_dev;
dev->type = id->driver_info;
dev->quality = QUALITY_DEF;
cam->cam_mode = jlj_mode;
cam->nmodes = ARRAY_SIZE(jlj_mode);
cam->bulk = 1;
cam->bulk_nurbs = 1;
cam->bulk_size = JEILINJ_MAX_TRANSFER;
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
int i;
u8 *buf;
static u8 stop_commands[][2] = {
{0x71, 0x00},
{0x70, 0x09},
{0x71, 0x80},
{0x70, 0x05}
};
for (;;) {
/* get the image remaining blocks */
usb_bulk_msg(gspca_dev->dev,
gspca_dev->urb[0]->pipe,
gspca_dev->urb[0]->transfer_buffer,
JEILINJ_MAX_TRANSFER, NULL,
JEILINJ_DATA_TIMEOUT);
/* search for 0xff 0xd9 (EOF for JPEG) */
i = 0;
buf = gspca_dev->urb[0]->transfer_buffer;
while ((i < (JEILINJ_MAX_TRANSFER - 1)) &&
((buf[i] != 0xff) || (buf[i+1] != 0xd9)))
i++;
if (i != (JEILINJ_MAX_TRANSFER - 1))
/* last remaining block found */
break;
}
for (i = 0; i < ARRAY_SIZE(stop_commands); i++)
jlj_write2(gspca_dev, stop_commands[i]);
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
return gspca_dev->usb_err;
}
/* Set up for getting frames. */
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *dev = (struct sd *) gspca_dev;
/* create the JPEG header */
jpeg_define(dev->jpeg_hdr, gspca_dev->pixfmt.height,
gspca_dev->pixfmt.width,
0x21); /* JPEG 422 */
jpeg_set_qual(dev->jpeg_hdr, dev->quality);
gspca_dbg(gspca_dev, D_STREAM, "Start streaming at %dx%d\n",
gspca_dev->pixfmt.height, gspca_dev->pixfmt.width);
jlj_start(gspca_dev);
return gspca_dev->usb_err;
}
/* Table of supported USB devices */
static const struct usb_device_id device_table[] = {
{USB_DEVICE(0x0979, 0x0280), .driver_info = SAKAR_57379},
{USB_DEVICE(0x0979, 0x0270), .driver_info = SPORTSCAM_DV15},
{}
};
MODULE_DEVICE_TABLE(usb, device_table);
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_POWER_LINE_FREQUENCY:
setfreq(gspca_dev, ctrl->val);
break;
case V4L2_CID_RED_BALANCE:
setred(gspca_dev, ctrl->val);
break;
case V4L2_CID_GAIN:
setgreen(gspca_dev, ctrl->val);
break;
case V4L2_CID_BLUE_BALANCE:
setblue(gspca_dev, ctrl->val);
break;
case V4L2_CID_AUTOGAIN:
setautogain(gspca_dev, ctrl->val);
break;
case V4L2_CID_JPEG_COMPRESSION_QUALITY:
jpeg_set_qual(sd->jpeg_hdr, ctrl->val);
setcamquality(gspca_dev, ctrl->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;
static const struct v4l2_ctrl_config custom_autogain = {
.ops = &sd_ctrl_ops,
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Automatic Gain (and Exposure)",
.max = 3,
.step = 1,
.def = 0,
};
gspca_dev->vdev.ctrl_handler = hdl;
v4l2_ctrl_handler_init(hdl, 6);
sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
V4L2_CID_POWER_LINE_FREQUENCY,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ);
v4l2_ctrl_new_custom(hdl, &custom_autogain, NULL);
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_RED_BALANCE, 0, 3, 1, 2);
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_GAIN, 0, 3, 1, 2);
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_BLUE_BALANCE, 0, 3, 1, 2);
sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_JPEG_COMPRESSION_QUALITY,
QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF);
if (hdl->error) {
pr_err("Could not initialize controls\n");
return hdl->error;
}
return 0;
}
static int sd_set_jcomp(struct gspca_dev *gspca_dev,
const struct v4l2_jpegcompression *jcomp)
{
struct sd *sd = (struct sd *) gspca_dev;
v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality);
return 0;
}
static int sd_get_jcomp(struct gspca_dev *gspca_dev,
struct v4l2_jpegcompression *jcomp)
{
struct sd *sd = (struct sd *) gspca_dev;
memset(jcomp, 0, sizeof *jcomp);
jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual);
jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT
| V4L2_JPEG_MARKER_DQT;
return 0;
}
/* sub-driver description */
static const struct sd_desc sd_desc_sakar_57379 = {
.name = MODULE_NAME,
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,
};
/* sub-driver description */
static const struct sd_desc sd_desc_sportscam_dv15 = {
.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,
.get_jcomp = sd_get_jcomp,
.set_jcomp = sd_set_jcomp,
};
static const struct sd_desc *sd_desc[2] = {
&sd_desc_sakar_57379,
&sd_desc_sportscam_dv15
};
/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
return gspca_dev_probe(intf, id,
sd_desc[id->driver_info],
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);
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