/*
* Mars-Semi MR97311A library
* Copyright (C) 2005 <bradlch@hotmail.com>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define MODULE_NAME "mars"
#include "gspca.h"
#include "jpeg.h"
MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("GSPCA/Mars USB Camera Driver");
MODULE_LICENSE("GPL");
#define QUALITY 50
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
struct v4l2_ctrl *brightness;
struct v4l2_ctrl *saturation;
struct v4l2_ctrl *sharpness;
struct v4l2_ctrl *gamma;
struct { /* illuminator control cluster */
struct v4l2_ctrl *illum_top;
struct v4l2_ctrl *illum_bottom;
};
u8 jpeg_hdr[JPEG_HDR_SZ];
};
/* V4L2 controls supported by the driver */
static void setbrightness(struct gspca_dev *gspca_dev, s32 val);
static void setcolors(struct gspca_dev *gspca_dev, s32 val);
static void setgamma(struct gspca_dev *gspca_dev, s32 val);
static void setsharpness(struct gspca_dev *gspca_dev, s32 val);
static const struct v4l2_pix_format vga_mode[] = {
{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 2},
{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 1},
};
static const __u8 mi_data[0x20] = {
/* 01 02 03 04 05 06 07 08 */
0x48, 0x22, 0x01, 0x47, 0x10, 0x00, 0x00, 0x00,
/* 09 0a 0b 0c 0d 0e 0f 10 */
0x00, 0x01, 0x30, 0x01, 0x30, 0x01, 0x30, 0x01,
/* 11 12 13 14 15 16 17 18 */
0x30, 0x00, 0x04, 0x00, 0x06, 0x01, 0xe2, 0x02,
/* 19 1a 1b 1c 1d 1e 1f 20 */
0x82, 0x00, 0x20, 0x17, 0x80, 0x08, 0x0c, 0x00
};
/* write <len> bytes from gspca_dev->usb_buf */
static void reg_w(struct gspca_dev *gspca_dev,
int len)
{
int alen, ret;
if (gspca_dev->usb_err < 0)
return;
ret = usb_bulk_msg(gspca_dev->dev,
usb_sndbulkpipe(gspca_dev->dev, 4),
gspca_dev->usb_buf,
len,
&alen,
500); /* timeout in milliseconds */
if (ret < 0) {
pr_err("reg write [%02x] error %d\n",
gspca_dev->usb_buf[0], ret);
gspca_dev->usb_err = ret;
}
}
static void mi_w(struct gspca_dev *gspca_dev,
u8 addr,
u8 value)
{
gspca_dev->usb_buf[0] = 0x1f;
gspca_dev->usb_buf[1] = 0; /* control byte */
gspca_dev->usb_buf[2] = addr;
gspca_dev->usb_buf[3] = value;
reg_w(gspca_dev, 4);
}
static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
{
gspca_dev->usb_buf[0] = 0x61;
gspca_dev->usb_buf[1] = val;
reg_w(gspca_dev, 2);
}
static void setcolors(struct gspca_dev *gspca_dev, s32 val)
{
gspca_dev->usb_buf[0] = 0x5f;
gspca_dev->usb_buf[1] = val << 3;
gspca_dev->usb_buf[2] = ((val >> 2) & 0xf8) | 0x04;
reg_w(gspca_dev, 3);
}
static void setgamma(struct gspca_dev *gspca_dev, s32 val)
{
gspca_dev->usb_buf[0] = 0x06;
gspca_dev->usb_buf[1] = val * 0x40;
reg_w(gspca_dev, 2);
}
static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
{
gspca_dev->usb_buf[0] = 0x67;
gspca_dev->usb_buf[1] = val * 4 + 3;
reg_w(gspca_dev, 2);
}
static void setilluminators(struct gspca_dev *gspca_dev, bool top, bool bottom)
{
/* both are off if not streaming */
gspca_dev->usb_buf[0] = 0x22;
if (top)
gspca_dev->usb_buf[1] = 0x76;
else if (bottom)
gspca_dev->usb_buf[1] = 0x7a;
else
gspca_dev->usb_buf[1] = 0x7e;
reg_w(gspca_dev, 2);
}
static int mars_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_ILLUMINATORS_1) {
/* only one can be on at a time */
if (ctrl->is_new && ctrl->val)
sd->illum_bottom->val = 0;
if (sd->illum_bottom->is_new && sd->illum_bottom->val)
sd->illum_top->val = 0;
}
if (!gspca_dev->streaming)
return 0;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
setbrightness(gspca_dev, ctrl->val);
break;
case V4L2_CID_SATURATION:
setcolors(gspca_dev, ctrl->val);
break;
case V4L2_CID_GAMMA:
setgamma(gspca_dev, ctrl->val);
break;
case V4L2_CID_ILLUMINATORS_1:
setilluminators(gspca_dev, sd->illum_top->val,
sd->illum_bottom->val);
break;
case V4L2_CID_SHARPNESS:
setsharpness(gspca_dev, ctrl->val);
break;
default:
return -EINVAL;
}
return gspca_dev->usb_err;
}
static const struct v4l2_ctrl_ops mars_ctrl_ops = {
.s_ctrl = mars_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, 6);
sd->brightness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 30, 1, 15);
sd->saturation = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
V4L2_CID_SATURATION, 0, 255, 1, 200);
sd->gamma = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
V4L2_CID_GAMMA, 0, 3, 1, 1);
sd->sharpness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
V4L2_CID_SHARPNESS, 0, 2, 1, 1);
sd->illum_top = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
V4L2_CID_ILLUMINATORS_1, 0, 1, 1, 0);
sd->illum_top->flags |= V4L2_CTRL_FLAG_UPDATE;
sd->illum_bottom = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
V4L2_CID_ILLUMINATORS_2, 0, 1, 1, 0);
sd->illum_bottom->flags |= V4L2_CTRL_FLAG_UPDATE;
if (hdl->error) {
pr_err("Could not initialize controls\n");
return hdl->error;
}
v4l2_ctrl_cluster(2, &sd->illum_top);
return 0;
}
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct cam *cam;
cam = &gspca_dev->cam;
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
return 0;
}
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 *data;
int i;
/* create the JPEG header */
jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
gspca_dev->pixfmt.width,
0x21); /* JPEG 422 */
jpeg_set_qual(sd->jpeg_hdr, QUALITY);
data = gspca_dev->usb_buf;
data[0] = 0x01; /* address */
data[1] = 0x01;
reg_w(gspca_dev, 2);
/*
Initialize the MR97113 chip register
*/
data[0] = 0x00; /* address */
data[1] = 0x0c | 0x01; /* reg 0 */
data[2] = 0x01; /* reg 1 */
data[3] = gspca_dev->pixfmt.width / 8; /* h_size , reg 2 */
data[4] = gspca_dev->pixfmt.height / 8; /* v_size , reg 3 */
data[5] = 0x30; /* reg 4, MI, PAS5101 :
* 0x30 for 24mhz , 0x28 for 12mhz */
data[6] = 0x02; /* reg 5, H start - was 0x04 */
data[7] = v4l2_ctrl_g_ctrl(sd->gamma) * 0x40; /* reg 0x06: gamma */
data[8] = 0x01; /* reg 7, V start - was 0x03 */
/* if (h_size == 320 ) */
/* data[9]= 0x56; * reg 8, 24MHz, 2:1 scale down */
/* else */
data[9] = 0x52; /* reg 8, 24MHz, no scale down */
/*jfm: from win trace*/
data[10] = 0x18;
reg_w(gspca_dev, 11);
data[0] = 0x23; /* address */
data[1] = 0x09; /* reg 35, append frame header */
reg_w(gspca_dev, 2);
data[0] = 0x3c; /* address */
/* if (gspca_dev->width == 1280) */
/* data[1] = 200; * reg 60, pc-cam frame size
* (unit: 4KB) 800KB */
/* else */
data[1] = 50; /* 50 reg 60, pc-cam frame size
* (unit: 4KB) 200KB */
reg_w(gspca_dev, 2);
/* auto dark-gain */
data[0] = 0x5e; /* address */
data[1] = 0; /* reg 94, Y Gain (auto) */
/*jfm: from win trace*/
/* reg 0x5f/0x60 (LE) = saturation */
/* h (60): xxxx x100
* l (5f): xxxx x000 */
data[2] = v4l2_ctrl_g_ctrl(sd->saturation) << 3;
data[3] = ((v4l2_ctrl_g_ctrl(sd->saturation) >> 2) & 0xf8) | 0x04;
data[4] = v4l2_ctrl_g_ctrl(sd->brightness); /* reg 0x61 = brightness */
data[5] = 0x00;
reg_w(gspca_dev, 6);
data[0] = 0x67;
/*jfm: from win trace*/
data[1] = v4l2_ctrl_g_ctrl(sd->sharpness) * 4 + 3;
data[2] = 0x14;
reg_w(gspca_dev, 3);
data[0] = 0x69;
data[1] = 0x2f;
data[2] = 0x28;
data[3] = 0x42;
reg_w(gspca_dev, 4);
data[0] = 0x63;
data[1] = 0x07;
reg_w(gspca_dev, 2);
/*jfm: win trace - many writes here to reg 0x64*/
/* initialize the MI sensor */
for (i = 0; i < sizeof mi_data; i++)
mi_w(gspca_dev, i + 1, mi_data[i]);
data[0] = 0x00;
data[1] = 0x4d; /* ISOC transferring enable... */
reg_w(gspca_dev, 2);
setilluminators(gspca_dev, v4l2_ctrl_g_ctrl(sd->illum_top),
v4l2_ctrl_g_ctrl(sd->illum_bottom));
return gspca_dev->usb_err;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (v4l2_ctrl_g_ctrl(sd->illum_top) ||
v4l2_ctrl_g_ctrl(sd->illum_bottom)) {
setilluminators(gspca_dev, false, false);
msleep(20);
}
gspca_dev->usb_buf[0] = 1;
gspca_dev->usb_buf[1] = 0;
reg_w(gspca_dev, 2);
}
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;
int p;
if (len < 6) {
/* gspca_dev->last_packet_type = DISCARD_PACKET; */
return;
}
for (p = 0; p < len - 6; p++) {
if (data[0 + p] == 0xff
&& data[1 + p] == 0xff
&& data[2 + p] == 0x00
&& data[3 + p] == 0xff
&& data[4 + p] == 0x96) {
if (data[5 + p] == 0x64
|| data[5 + p] == 0x65
|| data[5 + p] == 0x66
|| data[5 + p] == 0x67) {
PDEBUG(D_PACK, "sof offset: %d len: %d",
p, len);
gspca_frame_add(gspca_dev, LAST_PACKET,
data, p);
/* put the JPEG header */
gspca_frame_add(gspca_dev, FIRST_PACKET,
sd->jpeg_hdr, JPEG_HDR_SZ);
data += p + 16;
len -= p + 16;
break;
}
}
}
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}
/* sub-driver description */
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,
};
/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
{USB_DEVICE(0x093a, 0x050f)},
{}
};
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);