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linux/drivers/media/video/gspca/mars.c
Julia Lawall 802971257a V4L/DVB (9638): drivers/media: use ARRAY_SIZE 
ARRAY_SIZE is more concise to use when the size of an array is divided by
the size of its type or the size of its first element.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@i@
@@

@depends on i using "paren.iso"@
type T;
T[] E;
@@

- (sizeof(E)/sizeof(E[...]))
+ ARRAY_SIZE(E)

@depends on i using "paren.iso"@
type T;
T[] E;
@@

- (sizeof(E)/sizeof(T))
+ ARRAY_SIZE(E)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29 17:53:34 -02:00

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/*
* 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 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");
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
char qindex;
};
/* V4L2 controls supported by the driver */
static struct ctrl sd_ctrls[] = {
};
static struct v4l2_pix_format vga_mode[] = {
{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240 * 3 / 8 + 589,
.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},
};
/* MI Register table //elvis */
enum {
REG_HW_MI_0,
REG_HW_MI_1,
REG_HW_MI_2,
REG_HW_MI_3,
REG_HW_MI_4,
REG_HW_MI_5,
REG_HW_MI_6,
REG_HW_MI_7,
REG_HW_MI_9 = 0x09,
REG_HW_MI_B = 0x0B,
REG_HW_MI_C,
REG_HW_MI_D,
REG_HW_MI_1E = 0x1E,
REG_HW_MI_20 = 0x20,
REG_HW_MI_2B = 0x2B,
REG_HW_MI_2C,
REG_HW_MI_2D,
REG_HW_MI_2E,
REG_HW_MI_35 = 0x35,
REG_HW_MI_5F = 0x5f,
REG_HW_MI_60,
REG_HW_MI_61,
REG_HW_MI_62,
REG_HW_MI_63,
REG_HW_MI_64,
REG_HW_MI_F1 = 0xf1,
ATTR_TOTAL_MI_REG = 0xf2
};
/* the bytes to write are in gspca_dev->usb_buf */
static int reg_w(struct gspca_dev *gspca_dev,
__u16 index, int len)
{
int rc;
rc = usb_control_msg(gspca_dev->dev,
usb_sndbulkpipe(gspca_dev->dev, 4),
0x12,
0xc8, /* ?? */
0, /* value */
index, gspca_dev->usb_buf, len, 500);
if (rc < 0)
PDEBUG(D_ERR, "reg write [%02x] error %d", index, rc);
return rc;
}
static void bulk_w(struct gspca_dev *gspca_dev,
__u16 *pch,
__u16 Address)
{
gspca_dev->usb_buf[0] = 0x1f;
gspca_dev->usb_buf[1] = 0; /* control byte */
gspca_dev->usb_buf[2] = Address;
gspca_dev->usb_buf[3] = *pch >> 8; /* high byte */
gspca_dev->usb_buf[4] = *pch; /* low byte */
reg_w(gspca_dev, Address, 5);
}
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (struct sd *) gspca_dev;
struct cam *cam;
cam = &gspca_dev->cam;
cam->epaddr = 0x01;
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);
sd->qindex = 1; /* set the quantization table */
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)
{
int err_code;
__u8 *data;
__u16 *MI_buf;
int h_size, v_size;
int intpipe;
PDEBUG(D_STREAM, "camera start, iface %d, alt 8", gspca_dev->iface);
err_code = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 8);
if (err_code < 0) {
PDEBUG(D_ERR|D_STREAM, "Set packet size: set interface error");
return err_code;
}
data = gspca_dev->usb_buf;
data[0] = 0x01; /* address */
data[1] = 0x01;
err_code = reg_w(gspca_dev, data[0], 2);
if (err_code < 0)
return err_code;
/*
Initialize the MR97113 chip register
*/
data[0] = 0x00; /* address */
data[1] = 0x0c | 0x01; /* reg 0 */
data[2] = 0x01; /* reg 1 */
h_size = gspca_dev->width;
v_size = gspca_dev->height;
data[3] = h_size / 8; /* h_size , reg 2 */
data[4] = v_size / 8; /* v_size , reg 3 */
data[5] = 0x30; /* reg 4, MI, PAS5101 :
* 0x30 for 24mhz , 0x28 for 12mhz */
data[6] = 4; /* reg 5, H start */
data[7] = 0xc0; /* reg 6, gamma 1.5 */
data[8] = 3; /* reg 7, V start */
/* if (h_size == 320 ) */
/* data[9]= 0x56; * reg 8, 24MHz, 2:1 scale down */
/* else */
data[9] = 0x52; /* reg 8, 24MHz, no scale down */
data[10] = 0x5d; /* reg 9, I2C device address
* [for PAS5101 (0x40)] [for MI (0x5d)] */
err_code = reg_w(gspca_dev, data[0], 11);
if (err_code < 0)
return err_code;
data[0] = 0x23; /* address */
data[1] = 0x09; /* reg 35, append frame header */
err_code = reg_w(gspca_dev, data[0], 2);
if (err_code < 0)
return err_code;
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 */
err_code = reg_w(gspca_dev, data[0], 2);
if (err_code < 0)
return err_code;
if (0) { /* fixed dark-gain */
data[1] = 0; /* reg 94, Y Gain (1.75) */
data[2] = 0; /* reg 95, UV Gain (1.75) */
data[3] = 0x3f; /* reg 96, Y Gain/UV Gain/disable
* auto dark-gain */
data[4] = 0; /* reg 97, set fixed dark level */
data[5] = 0; /* reg 98, don't care */
} else { /* auto dark-gain */
data[1] = 0; /* reg 94, Y Gain (auto) */
data[2] = 0; /* reg 95, UV Gain (1.75) */
data[3] = 0x78; /* reg 96, Y Gain/UV Gain/disable
* auto dark-gain */
switch (gspca_dev->width) {
/* case 1280: */
/* data[4] = 154;
* reg 97, %3 shadow point (unit: 256 pixel) */
/* data[5] = 51;
* reg 98, %1 highlight point
* (uint: 256 pixel) */
/* break; */
default:
/* case 640: */
data[4] = 36; /* reg 97, %3 shadow point
* (unit: 256 pixel) */
data[5] = 12; /* reg 98, %1 highlight point
* (uint: 256 pixel) */
break;
case 320:
data[4] = 9; /* reg 97, %3 shadow point
* (unit: 256 pixel) */
data[5] = 3; /* reg 98, %1 highlight point
* (uint: 256 pixel) */
break;
}
}
/* auto dark-gain */
data[0] = 0x5e; /* address */
err_code = reg_w(gspca_dev, data[0], 6);
if (err_code < 0)
return err_code;
data[0] = 0x67;
data[1] = 0x13; /* reg 103, first pixel B, disable sharpness */
err_code = reg_w(gspca_dev, data[0], 2);
if (err_code < 0)
return err_code;
/*
* initialize the value of MI sensor...
*/
MI_buf = kzalloc(ATTR_TOTAL_MI_REG * sizeof *MI_buf, GFP_KERNEL);
MI_buf[REG_HW_MI_1] = 0x000a;
MI_buf[REG_HW_MI_2] = 0x000c;
MI_buf[REG_HW_MI_3] = 0x0405;
MI_buf[REG_HW_MI_4] = 0x0507;
/* mi_Attr_Reg_[REG_HW_MI_5] = 0x01ff;//13 */
MI_buf[REG_HW_MI_5] = 0x0013; /* 13 */
MI_buf[REG_HW_MI_6] = 0x001f; /* vertical blanking */
/* mi_Attr_Reg_[REG_HW_MI_6] = 0x0400; // vertical blanking */
MI_buf[REG_HW_MI_7] = 0x0002;
/* mi_Attr_Reg_[REG_HW_MI_9] = 0x015f; */
/* mi_Attr_Reg_[REG_HW_MI_9] = 0x030f; */
MI_buf[REG_HW_MI_9] = 0x0374;
MI_buf[REG_HW_MI_B] = 0x0000;
MI_buf[REG_HW_MI_C] = 0x0000;
MI_buf[REG_HW_MI_D] = 0x0000;
MI_buf[REG_HW_MI_1E] = 0x8000;
/* mi_Attr_Reg_[REG_HW_MI_20] = 0x1104; */
MI_buf[REG_HW_MI_20] = 0x1104; /* 0x111c; */
MI_buf[REG_HW_MI_2B] = 0x0008;
/* mi_Attr_Reg_[REG_HW_MI_2C] = 0x000f; */
MI_buf[REG_HW_MI_2C] = 0x001f; /* lita suggest */
MI_buf[REG_HW_MI_2D] = 0x0008;
MI_buf[REG_HW_MI_2E] = 0x0008;
MI_buf[REG_HW_MI_35] = 0x0051;
MI_buf[REG_HW_MI_5F] = 0x0904; /* fail to write */
MI_buf[REG_HW_MI_60] = 0x0000;
MI_buf[REG_HW_MI_61] = 0x0000;
MI_buf[REG_HW_MI_62] = 0x0498;
MI_buf[REG_HW_MI_63] = 0x0000;
MI_buf[REG_HW_MI_64] = 0x0000;
MI_buf[REG_HW_MI_F1] = 0x0001;
/* changing while setting up the different value of dx/dy */
if (gspca_dev->width != 1280) {
MI_buf[0x01] = 0x010a;
MI_buf[0x02] = 0x014c;
MI_buf[0x03] = 0x01e5;
MI_buf[0x04] = 0x0287;
}
MI_buf[0x20] = 0x1104;
bulk_w(gspca_dev, MI_buf + 1, 1);
bulk_w(gspca_dev, MI_buf + 2, 2);
bulk_w(gspca_dev, MI_buf + 3, 3);
bulk_w(gspca_dev, MI_buf + 4, 4);
bulk_w(gspca_dev, MI_buf + 5, 5);
bulk_w(gspca_dev, MI_buf + 6, 6);
bulk_w(gspca_dev, MI_buf + 7, 7);
bulk_w(gspca_dev, MI_buf + 9, 9);
bulk_w(gspca_dev, MI_buf + 0x0b, 0x0b);
bulk_w(gspca_dev, MI_buf + 0x0c, 0x0c);
bulk_w(gspca_dev, MI_buf + 0x0d, 0x0d);
bulk_w(gspca_dev, MI_buf + 0x1e, 0x1e);
bulk_w(gspca_dev, MI_buf + 0x20, 0x20);
bulk_w(gspca_dev, MI_buf + 0x2b, 0x2b);
bulk_w(gspca_dev, MI_buf + 0x2c, 0x2c);
bulk_w(gspca_dev, MI_buf + 0x2d, 0x2d);
bulk_w(gspca_dev, MI_buf + 0x2e, 0x2e);
bulk_w(gspca_dev, MI_buf + 0x35, 0x35);
bulk_w(gspca_dev, MI_buf + 0x5f, 0x5f);
bulk_w(gspca_dev, MI_buf + 0x60, 0x60);
bulk_w(gspca_dev, MI_buf + 0x61, 0x61);
bulk_w(gspca_dev, MI_buf + 0x62, 0x62);
bulk_w(gspca_dev, MI_buf + 0x63, 0x63);
bulk_w(gspca_dev, MI_buf + 0x64, 0x64);
bulk_w(gspca_dev, MI_buf + 0xf1, 0xf1);
kfree(MI_buf);
intpipe = usb_sndintpipe(gspca_dev->dev, 0);
err_code = usb_clear_halt(gspca_dev->dev, intpipe);
data[0] = 0x00;
data[1] = 0x4d; /* ISOC transfering enable... */
reg_w(gspca_dev, data[0], 2);
return err_code;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
int result;
gspca_dev->usb_buf[0] = 1;
gspca_dev->usb_buf[1] = 0;
result = reg_w(gspca_dev, gspca_dev->usb_buf[0], 2);
if (result < 0)
PDEBUG(D_ERR, "Camera Stop failed");
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
__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 leng: %d",
p, len);
frame = gspca_frame_add(gspca_dev, LAST_PACKET,
frame, data, 0);
/* put the JPEG header */
jpeg_put_header(gspca_dev, frame,
sd->qindex, 0x21);
data += 16;
len -= 16;
break;
}
}
}
gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
.ctrls = sd_ctrls,
.nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,
};
/* -- module initialisation -- */
static const __devinitdata 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,
#endif
};
/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
if (usb_register(&sd_driver) < 0)
return -1;
PDEBUG(D_PROBE, "registered");
return 0;
}
static void __exit sd_mod_exit(void)
{
usb_deregister(&sd_driver);
PDEBUG(D_PROBE, "deregistered");
}
module_init(sd_mod_init);
module_exit(sd_mod_exit);
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