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linux/drivers/media/usb/gspca/jeilinj.c
Thomas Gleixner fd9871f70c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 24 
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>
2019-05-21 11:52:39 +02:00

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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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